WO2024051505A1

WO2024051505A1 - Suction cup for use in double-layer bag production, suction cup assembly, and manufacturing apparatus for double-layer bag

Info

Publication number: WO2024051505A1
Application number: PCT/CN2023/115026
Authority: WO
Inventors: 王榴根
Original assignee: 王侃祺
Priority date: 2022-09-07
Filing date: 2023-08-25
Publication date: 2024-03-14
Also published as: CN219076694U

Abstract

Provided in the present application are a suction cup for use in double-layer bag production, a suction cup assembly, and a manufacturing apparatus for a double-layer bag. The suction cup for use in double-layer bag production comprises a suction cup body, a carrying component and a buffer pad, wherein the suction cup body has a cavity located on the inside and a first contact surface located on the outside, the first contact surface is configured to come into contact with an outer surface of a double-layer bag, and a portion of the first contact surface is recessed in the heightwise direction of the suction cup body to form a positioning recess; the carrying component can be detachably arranged in the positioning recess; the buffer pad is connected to the carrying component, the surface of the buffer pad facing away from the carrying component forms a second contact surface that is configured to come into contact with the outer surface of the double-layer bag, and the buffer pad matches with the positioning recess; and first suction holes for suctioning the outer surface of the double-layer bag are formed in the first contact surface and/or the second contact surface, and the first suction holes are in communication with the cavity. By means of the present application, the efficiency of removing and replacing the buffer pad can be improved, thereby conducive to reducing the impact on the production efficiency due to the removal and replacement of the buffer pad.

Description

Suction cups, suction cup components and double-layer bag manufacturing equipment for double-layer bag production

Technical field

The present application relates generally to the technical field of packaging bag processing equipment, and more specifically to a suction cup for double-layer bag production, a suction cup assembly and double-layer bag manufacturing equipment.

Background technique

The double-layer bag includes an inner bag and an outer bag set outside the inner bag. The outer bag is generally a woven bag, a laminate bag, a laminated bag or a paper-plastic composite bag. The inner bag usually uses PE film.

In the process of producing double-layer bags, after the outer bag is placed on the outside of the inner bag, the openings of the inner bag and the outer bag need to be joined together (for example, by heating). During the joining process, the bag body to be joined is located between the suction cup and the heat sealing knife. The suction cup squeezes the bag body against the heat sealing knife to realize the joining of the inner bag and the outer bag. In order to buffer the contact force when the suction cup and the heat sealing knife are close to each other, a flexible gasket is usually provided on the suction cup, and the gasket and the suction cup body are fixed with adhesive. However, as a consumable gasket, when replacing it, you need to disassemble the entire suction cup from the equipment, remove the old gasket, clean the residual glue, then apply glue and install a new gasket, and then go through Press flat and keep it for more than 24 hours until the glue solidifies before reinstalling the suction cup on the device. As a result, the equipment cannot be put into normal production for a long time, seriously affecting production efficiency.

Therefore, there is a need to provide a suction cup, a suction cup assembly and a double layer bag manufacturing equipment to at least partially solve the above problems.

Contents of the invention

This summary introduces a series of concepts in a simplified form that are further described in detail in the detailed description. The invention summary part of this application is not intended to limit the key features and necessary technical features of the claimed technical solution, nor is it intended to determine the protection scope of the claimed technical solution.

In order to at least partially solve the above problems, the first aspect of the present application provides a suction cup for double-layer bag production, which includes:

A suction cup body having a chamber on the inside and a first contact on the outside. Surface, the first contact surface is used to contact the outer surface of the double-layer bag, and on the first contact surface, a positioning groove is recessed along the height direction of the suction cup body;

a load-bearing member, the load-bearing member being detachably disposed into the positioning groove; and

a cushioning gasket connected to the load-bearing member, a surface of the cushioning gasket facing away from the load-bearing member forming a second contact surface for contacting the outer surface of the double-layer bag, and the cushioning gasket is connected to The positioning grooves are adapted to each other;

Wherein, the first contact surface and/or the second contact surface is provided with a first suction hole for adsorbing the outer surface of the double-layer bag, and the first suction hole is connected with the chamber.

Optionally, the load-bearing member is configured as a magnetically conductive sheet;

The suction cup for double-layer bag production also includes:

Magnetic component, the magnetic component is provided to the suction cup body and corresponds to the positioning slot. The magnetic component is used to apply magnetic attraction to the magnetically conductive sheet so that the magnetically conductive sheet is connected to the positioning groove. bottom of the trough.

Optionally, the positioning groove has:

bottom wall;

An end wall connected to an end of the bottom wall along the length direction of the suction cup body to define the positions of the magnetically conductive sheet and the buffer pad along the length direction; and

The side wall is connected to the end of the bottom wall along the width direction of the suction cup body to define the positions of the magnetically conductive sheet and the buffer pad along the width direction.

Optionally, the end wall is provided with two, and the two end walls are respectively located at the two ends of the bottom wall along the length direction; the side wall is provided with one, and the positioning groove is An opening is formed at one end away from the side wall along the width direction, and the size of the opening is adapted to the magnetically conductive sheet and the buffer pad to allow the magnetically conductive sheet and the buffer pad to The piece passes through.

Optionally, a plug-in slot is provided on the side wall, and the magnetically conductive sheet has a plug-in flange extending outward along the width direction, and the plug-in flange is adapted to be plugged into the The insertion slot is used to at least limit the degree of freedom of the magnetically conductive sheet along the height direction.

Optionally, the insertion slot and the insertion flange are spaced apart along the length direction.

Optionally, the magnetic member is configured as a columnar magnet;

A mounting hole is provided at the bottom of the positioning groove. One end of the columnar magnet is embedded in the mounting hole. The other end of the columnar magnet is connected to the inner wall of the chamber. The length direction of the columnar magnet is parallel. in the height direction of the suction cup body.

Optionally, the suction cup for double-layer bag production also includes:

Auxiliary suction cup, the auxiliary suction cup has a second suction hole, the direction of the second suction hole is consistent with the direction of the first suction hole, and the second suction hole does not exceed the height direction of the suction cup body. the second contact surface.

Optionally, the auxiliary suction cups are spaced apart along the length direction of the suction cup body, and the distance between two adjacent auxiliary suction cups decreases from the middle to both ends along the length direction of the suction cup body.

Optionally, the auxiliary suction cup is connected to the suction cup body, and the second suction hole is connected to the chamber.

Optionally, the auxiliary suction cup is configured as an L-shaped pipe member, the L-shaped pipe member includes a first pipe body and a second pipe body, the length direction of the first pipe body is parallel to the height direction of the suction cup body, The length direction of the second tube body is parallel to the width direction of the suction cup body, the other end of the first tube body is provided with the second suction hole, and the other end of the second tube body is connected to the The suction cup body, the lumen of the L-shaped pipe member is connected with the chamber.

Optionally, an end of the bottom wall away from the side wall along the width direction forms a groove, and the groove extends along the length direction of the suction cup body.

According to the suction cup for double-layer bag production according to the first aspect of the present application, the buffer gasket is connected to the bearing member, and then the bearing member is detachably connected to the positioning groove on the suction cup body. During disassembly, the buffer gasket can be removed from the suction cup body by detaching the load-bearing member from the suction cup body; during installation, the buffer gasket can be installed into the positioning groove by installing the load-bearing member into the positioning groove. on the suction cup body. The use of the suction cup for double-layer bag production of the present application can improve the efficiency of replacing the buffer gasket, thereby helping to reduce the impact on production efficiency caused by the replacement of the buffer gasket.

The second aspect of this application provides a suction cup assembly for double-layer bag production, including:

upper suction cup; and

a lower suction cup, the lower suction cup is arranged opposite to the upper suction cup, and the lower suction cup is located below the upper suction cup;

The upper suction cup and the lower suction cup have the same structure, and both the upper suction cup and the lower suction cup are configured as the above-mentioned suction cups for double-layer bag production.

The suction cup assembly for double-layer bag production according to the second aspect of the present application includes an upper suction cup and a lower suction cup. Both the upper suction cup and the lower suction cup adopt the structure of the suction cup of the first aspect of the present application. The use of the suction cup assembly for double-layer bag production of the present application can improve the efficiency of replacing the buffer gaskets of the upper suction cup and the lower suction cup, thus Reduce the time taken up by replacing cushion pads, thereby helping to ensure stable production operations.

A third aspect of the present application provides a double-layer bag manufacturing equipment, which includes the above-mentioned suction cup assembly for double-layer bag production.

According to the double-layer bag manufacturing equipment provided in the third aspect of the present application, by applying the above-mentioned suction cup assembly for double-layer bag production, since the load-bearing member and the buffer gasket can be replaced as a whole, there is no need to remove the suction cup assembly from the double-layer bag. The manufacturing equipment can be disassembled to replace the buffer gasket, which greatly improves the replacement efficiency, thereby helping to improve the production efficiency of the equipment.

Description of the drawings

The following drawings of embodiments of the present application are hereby incorporated into the present application for use in understanding the present application. The accompanying drawings illustrate embodiments of the present application and their descriptions to explain the principles of the present application. In the attached picture,

Figure 1 is a perspective view of a suction cup for double-layer bag production according to a preferred embodiment of the present application;

Figure 2 is an exploded perspective view of the suction cup for double-layer bag production shown in Figure 1;

Figure 3 is a top view of the suction cup for double-layer bag production shown in Figure 1;

Figure 4 is a cross-sectional view taken along line A-A in Figure 3;

Figure 5 is a cross-sectional view taken along line B-B in Figure 3;

Figure 6 is a cross-sectional view taken along line C-C in Figure 3;

Figure 7 is another exploded perspective view of the suction cup for double-layer bag production shown in Figure 1;

Figure 8 is a top view of the suction cup body shown in Figure 1;

Figure 9 is a cross-sectional view taken along line D-D in Figure 8;

Figure 10 is a perspective view of the suction cup body shown in Figure 8;

Figure 11 is a cross-sectional view of the suction cup body shown in Figure 8, in which the cutting position and cutting direction are consistent with the center line A-A of Figure 3;

Figure 12 is a top view of the load-bearing member and the buffer gasket in Figure 1 connected together;

Figure 13 is a cross-sectional view taken along line E-E in Figure 12;

Figure 14 is a cross-sectional view taken along line F-F in Figure 12; and

Fig. 15 is a perspective view of the load-bearing member and the buffer pad in Figs. 1, 12 to 14 connected together.

Explanation of reference symbols:
100: Suction cup body 101: Chamber
101a: Mounting slot 102: First contact surface
102a: First suction hole 103: Positioning slot
104: Bottom wall 104a: Mounting hole
104b: First via 105: End wall
106: Side wall 106a: Plug-in slot
107: Opening 108: Groove
110: Load-bearing member 111: Plug-in flange
112: Second via 120: Buffer gasket
121: Second contact surface 122: First suction hole
130: Magnetic component 140: Auxiliary suction cup
141: First tube body 141a: Second suction hole
142: Second tube body D1: Length direction
D2: Width direction D3: Height direction

Detailed ways

In the following description, numerous specific details are given in order to provide a thorough understanding of the present application. However, it will be apparent to one skilled in the art that embodiments of the present application may be practiced without one or more of these details. In other examples, in order to avoid confusion with the embodiments of the present application, some technical features that are well known in the art are not described.

In order to thoroughly understand the embodiments of the present application, detailed structures will be proposed in the following description. Obviously, implementation of the embodiments of the present application is not limited to specific details familiar to those skilled in the art.

It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application, and the singular forms "a,""an," and "the" are intended to include the plural forms as well, unless The context clearly indicates otherwise. When the terms "comprises" and/or "includes" are used in this specification, they indicate the presence of the stated features, integers, steps, operations, elements and/or components, but do not exclude the presence or addition of one or more other features, Integers, steps, operations, elements, components and/or combinations thereof. The terms "upper", "lower", "front", "back", "left", "right" and similar expressions used in this application are for illustrative purposes only and are not limiting.

Ordinal words such as "first" and "second" cited in this application are merely identifiers and do not have any other meaning, such as a specific order, etc. Furthermore, for example, the term "first component" does not by itself imply the presence of a "second component" and the term "second component" does not by itself imply the presence of a "first component".

Hereinafter, specific embodiments of the present application will be described in more detail with reference to the accompanying drawings, which illustrate representative embodiments of the present application and do not limit the present application.

This application provides a suction cup for the production of double-layer bags, especially for heat-sealing the inner bag and the outer bag together with a heat-sealing knife. As shown in FIGS. 1 to 15 , the suction cup for double-layer bag production according to the present application includes a suction cup body 100 , a load-bearing member 110 and a buffer pad 120 . The suction cup body 100 has a cavity 101 on the inside and a first contact surface 102 on the outside. The chamber 101 is used to temporarily store the flowing airflow when the suction cup body 100 is connected to a negative pressure device. The first contact surface 102 is used to contact the outer surface of the double bag. On the first contact surface 102 , a positioning groove 103 is recessed along the height direction D3 of the suction cup body 100 . The bearing member 110 is detachably disposed into the positioning groove 103 . Cushion pad 120 is connected to load bearing member 110 . The surface of the cushioning pad 120 facing away from the load-bearing member 110 forms a second contact surface 121 for contacting the outer surface of the double bag. And the buffer pad 120 is adapted to the positioning groove 103 . Wherein, at least one of the first contact surface 102 and the second contact surface 121 is provided with a first suction hole for adsorbing the outer surface of the double-layer bag. The first suction hole is connected with the chamber 101. When the chamber 101 is connected to the air source, the air flow at each first suction hole flows to the negative pressure device through the chamber 101 . The second contact surface 121 is flush with the first contact surface 102 to jointly form an adsorption surface for adsorbing the outer surface of the double-layer bag. The first suction hole may be 102a, 122 in the figure.

According to the suction cup for double-layer bag production of the present application, the buffer gasket 120 is connected to the bearing member 110, and then the bearing member 110 is detachably connected to the positioning groove 103 on the suction cup body 100. During disassembly, by detaching the bearing member 110 from the suction cup body 100 , the buffer pad 120 can be detached from the suction cup body 100 . During installation, the buffer gasket 120 can be installed on the suction cup body 100 by installing the bearing member 110 into the positioning groove 103 . The use of the suction cup for double-layer bag production of the present application can improve the efficiency of replacing the buffer gasket 120, thereby helping to reduce the impact on production efficiency caused by the replacement of the buffer gasket 120. The bearing member 110 and the buffer gasket 120 are connected together as replaceable consumables, making the replacement of the buffer gasket 120 on the suction cup body 100 more convenient, flexible and efficient.

See Figure 1 to Figure 15. For example, the load-bearing member 110 may be configured as a magnetically conductive sheet. Use magnetic conductivity The sheet carries and fixes the buffer gasket 120, which can help ensure the flatness of the buffer gasket 120 attached to the magnetically conductive sheet, thereby enabling the outer bag and the inner bag to be squeezed by the suction cup and the heat sealing knife and heat sealed. , the force on each part is more uniform, and the heat sealing effect is more consistent. The suction cup for double bag production also includes a magnetic member 130 . The magnetic component 130 can be disposed at the bottom of the positioning groove 103 , or can be disposed in the cavity 101 of the suction cup body 100 and correspond to the position of the positioning groove 103 . The magnetic component 130 is used to apply magnetic attraction to the magnetically conductive sheet, so that the magnetically conductive sheet is connected to the bottom of the positioning groove 103 . That is, through the magnetic attraction between the magnetically permeable sheet and the magnetic component 130, the detachable connection between the magnetically permeable sheet and the suction cup body 100 is achieved. Connecting the magnetically permeable sheet to the suction cup body 100 through magnetic attraction can effectively improve the quick disassembly and assembly of the combination of the magnetically permeable sheet and the buffer gasket 120 on the suction cup body 100, and greatly improve the efficiency of replacing the buffer gasket 120.

In some other embodiments of the present application, the carrying member 110 can also be configured as a magnetic member 130, and the suction cup body 100 can be provided with magnetically conductive structures such as magnetically conductive sheets and magnetically conductive columns. Alternatively, the suction cup body 100 may be constructed as a magnetic conductive structure. For example, the suction cup body 100 may be made of stainless steel.

In some other embodiments of the present application, the carrying member 110 may be configured as a magnetic member 130, and the magnetic member may be disposed on the suction cup body 100. This can enhance the magnetic adsorption force between the carrying member 110 and the suction cup body 100, thereby improving the stability of the connection structure between the carrying member 110 and the suction cup body 100.

See Figure 1 to Figure 15. The magnetic conductive sheet can be constructed as an integral magnetic conductive sheet, and the straight magnetic conductive sheet helps to improve the flatness of the buffer gasket 120 . Generally, heat-resistant glue can be used to fix the magnetic conductive sheet and the buffer gasket 120, and the heat-resistant glue can be elastic after curing. When the magnetic conductive sheet and the buffer gasket 120 are fixed by adhesive, there can be a certain thickness of colloid between the magnetic conductive sheet and the buffer gasket 120 after curing, thereby helping to improve the relationship between the magnetic conductive sheet and the buffer gasket 120 . The firmness of the connection structure between them.

See Figure 2, Figures 4 to 6, and Figures 9 to 11. For example, the positioning groove 103 has a bottom wall 104, an end wall 105 and a side wall 106. The bottom wall 104 is perpendicular to the height direction D3 of the suction cup body 100 . The end wall 105 is connected to the end of the bottom wall 104 along the length direction D1 of the suction cup body 100 . The end wall 105 is perpendicular to the length direction D1 of the suction cup body 100 and is used to define the positions of the magnetic conductive sheet and the buffer pad 120 along the length direction D1. The side wall 106 is connected to an end of the bottom wall 104 along the width direction D2 of the suction cup body 100 . The side wall 106 is perpendicular to the width direction D2 of the suction cup body 100 and is used to define the positions of the magnetic conductive sheet and the buffer pad 120 along the width direction D2. In other words, the positioning groove 103 is used to receive the assembly of the bearing member 110 and the buffer pad 120 and to position the assembly.

See Figures 1 to 6, and Figures 8 to 10. Further, two end walls 105 are provided. The two end walls 105 are respectively located at the two ends of the bottom wall 104 along the length direction D1 of the suction cup body 100, so that the degree of freedom of the combination of the load-bearing member 110 and the buffer pad 120 along the length direction D1 can be completely restricted. , ensuring that the assembly cannot be displaced along the length direction D1. One side wall 106 is provided, and the one side wall 106 can restrict the movement of the combination of the bearing member 110 and the buffer pad 120 in one direction along the width direction D2. An opening 107 is formed at one end of the positioning groove 103 away from the side wall 106 along the width direction D2. The size of the opening 107 is adapted to the magnetically conductive sheet and the buffer gasket 120 to allow the assembly of the magnetically conductive sheet and the buffer gasket 120 to pass through in the width direction D2, thereby enabling the assembly to be removed or removed from the suction cup body 100. The assembly is installed on the suction cup body 100 .

See Figure 2, Figure 5 to Figure 15. The bottom wall 104 may be provided with a first via hole 104b, and the magnetic conductive sheet may be provided with a second via hole 112. The first via hole 104b and the second via hole 112 are respectively adapted to the position, shape, and size of the first suction hole 122 on the buffer gasket 120, so that the negative pressure airflow passes through the buffer gasket 120, the magnetic conductive sheet, and bottom wall 104 and enters the chamber 101.

See Figure 1 to Figure 11. In the positioning groove 103, a groove 108 is formed at one end of the bottom wall 104 away from the side wall 106 in the width direction D2. The groove 108 extends along the length direction D1 of the suction cup body 100 . By providing the groove 108, it can be used to accommodate glue, so that the connection structure between the magnetic conductive sheet and the suction cup body 100 can be reinforced by the glue. The groove 108 can also facilitate the removal of the magnetically conductive sheet. For example, by extending a fingernail or a tool into the groove 108 and applying force along the height direction D3 to the magnetically conductive sheet, the magnetically conductive sheet can be removed.

See Figures 1 to 4, and Figures 10 to 15. In addition, the side wall 106 may also be provided with a plug-in slot 106a. Correspondingly, the magnetically conductive sheet may have a plug-in flange 111 extending outward along the width direction D2 of the suction cup body 100 . The plug flange 111 is adapted to be plugged into the plug slot 106a. After the insertion flange 111 is inserted into the insertion slot 106a, the suction cup body 100 can at least limit the degree of freedom of the insertion flange 111 along the height direction D3 of the suction cup body 100. The width direction D2 of the magnetically permeable sheet is consistent with the width direction D2 of the suction cup body 100. Through the cooperation of the insertion flange 111 and the insertion slot 106a, the movement of one end of the magnetically permeable sheet along the width direction D2 along the height direction D3 can be restricted. The movement of the remaining parts of the magnetically permeable sheet along the height direction D3 is mainly restricted by the magnetic attraction force between the magnetically permeable sheet and the magnetic component 130 . At the same time, the degree of freedom of the insertion flange 111 inserted into the insertion slot 106a along the length direction D1 of the suction cup body 100 is restricted, thereby more reliably limiting the displacement of the magnetically permeable sheet along the length direction D1.

See Figures 2 and 7, and Figures 9 through 15. For example, both the insertion slot 106a and the insertion flange 111 may be spaced apart along the length direction D1. Wherein, when the insertion flanges 111 are arranged at intervals along the length direction D1, it can help to reduce the weight of the magnetically conductive sheet. The insertion slots 106a are spaced apart along the length direction D1, which can help ensure the structural strength of the suction cup body 100.

See Figures 1 to 10. In the illustrated embodiment, magnetic member 130 may be configured as a cylindrical magnet. The bottom of the positioning groove 103 is provided with a mounting hole 104a, and the mounting hole 104a is a through hole. One end of the columnar magnet is embedded in the mounting hole 104a. The other end of the columnar magnet is connected to the inner wall of the chamber 101. The length direction of the columnar magnet is parallel to the height direction D3 of the suction cup body 100 . Compared with using sheet-shaped magnets, the ends of the columnar magnets can have stronger magnetic attraction, thereby helping to improve the stability of the connection structure between the magnetically permeable sheet and the magnetic component 130 . Column magnets can be understood as cylindrical magnets or polygonal prism magnets. One end of the columnar magnet is located in the mounting hole 104a and flush with the bottom of the positioning groove 103, for contacting the magnetically conductive sheet and magnetically adsorbing the magnetically conductive sheet. The other end of the columnar magnet can be connected to the inner wall of the chamber 101 using fasteners such as screws, or can be fixedly connected to the inner wall of the chamber 101 using adhesive. In order to position the other end of the columnar magnet, a mounting groove 101a may be provided on the inner wall of the chamber 101 in the direction in which the mounting hole 104a extends. The other end of the columnar magnet is inserted into the mounting groove 101a.

See Figures 1 to 7. In addition, the suction cup for double-layer bag production also includes an auxiliary suction cup 140. The auxiliary suction cup 140 has a second suction hole 141a. The direction of the second suction hole 141a is consistent with the direction of the first suction hole 122. And the second suction hole 141a does not exceed the second contact surface 121 along the height direction D3 of the suction cup body 100 . The auxiliary suction cup 140 is usually disposed on the front side of the suction cup body 100 along the width direction D2. The front side here can be understood as that when adsorbing a double-layer bag, the auxiliary suction cup 140 is larger than the suction cup body 100 along the length direction of the double-layer bag. Closer to the edge of the double bag opening. The auxiliary suction cup 140 is generally used in scenarios where the bag mouth of a double-layer bag needs to be folded (such as folding the edge of the bag mouth inwards). In this case, the portion of the double-layer bag to be heat-sealed corresponds to the suction cup body 100, and the suction cup body 100 may be slightly farther from the edge of the bag along the length direction of the double-layer bag, relying only on the first suction hole 122 and the second suction hole 122. One suction hole 102a cannot reliably open the bag mouth. Therefore, by arranging the auxiliary suction cup 140 closer to the edge of the bag mouth, the bag mouth can be opened more effortlessly and reliably. After the bag mouth is opened, the heat sealing knife can extend into the inside of the bag mouth and cooperate with the suction cup body 100 and the buffer gasket 120 to heat seal the inner bag and the outer bag together. The reason why the second suction hole 141a does not exceed the second contact surface 121 along the height direction D3 of the suction cup body 100 is because if the second suction hole 141a exceeds the second contact surface 121, when the bag mouth is opened, the second suction hole 141a does not exceed the second contact surface 121. Bag body at hole 141a The position must exceed the bag body position at the first suction hole 122, thus causing the size of the bag mouth to increase along the height direction D3 of the suction cup body 100 along the direction of entering the bag mouth, which is obviously not conducive to the heat sealing knife entering the bag mouth.

See Figures 1 to 10. For example, the auxiliary suction cups 140 can be arranged at intervals along the length direction D1 of the suction cup body 100, so that multiple points of suction can be implemented on the outer surface of the double-layer bag. And the distance between two adjacent auxiliary suction cups 140 decreases from the middle to both ends along the length direction D1 of the suction cup body 100 . For example, in the illustrated embodiment, among the plurality of auxiliary suction cups 140 located in the middle, the distance between two adjacent auxiliary suction cups 140 is the same. Among the plurality of auxiliary suction cups 140 located at both ends, the distance between two adjacent auxiliary suction cups 140 is the same, and the distance is smaller than the distance between two adjacent auxiliary suction cups 140 located in the middle. When in use, the auxiliary suction cups 140 with the same spacing in the middle are used to adapt to double-layer bags with smaller widths; the auxiliary suction cups 140 at the ends and the auxiliary suction cups 140 in the middle are combined together to adapt to wider sizes. double bag. The size difference between different specifications of wider sizes is usually not large, so the distance between the auxiliary suction cups 140 at the ends is set smaller to facilitate the production of double-layer bags with more width sizes. Moreover, when the width of the double-layer bag is large, it is more difficult to open the two ends of the bag mouth than in the middle. By arranging the auxiliary suction cups 140 at both ends more densely, it helps to exert greater pressure on the bag body. The adsorption force improves the opening of both ends of the bag more reliably.

Continue to refer to Figures 1 to 10. In order to save pipe fittings and improve the compactness of the structure, the auxiliary suction cup 140 can be connected to the suction cup body 100 . Furthermore, the second suction hole 141a communicates with the chamber 101. When the auxiliary suction cup 140 is connected to the suction cup body 100 and communicates with the chamber 101 of the suction cup body 100, it can share a set of air pipes with the suction cup body 100 to connect to the negative pressure device.

In the illustrated embodiment, the auxiliary suction cup 140 is configured as an L-shaped tube. The L-shaped pipe includes a first pipe body 141 and a second pipe body 142 . The tube length direction of the first tube body 141 is parallel to the height direction D3 of the suction cup body 100 . The length direction of the second tube body 142 is parallel to the width direction D2 of the suction cup body 100 . The other end of the first tube body 141 is provided with a second suction hole 141a. The other end of the second tube body 142 is connected to the suction cup body 100 . The lumen of the L-shaped pipe is connected with the chamber 101 . The L-shaped pipe fitting may specifically be an L-shaped air nozzle.

See Figures 1 to 7. In the illustrated embodiment, the first suction hole 102a located on the first contact surface 102 is configured as a circular through hole. The first suction hole 122 located on the second contact surface 121 is configured as an oblong hole. The length direction D1 of the oblong hole is consistent with the length direction D1 of the suction cup body 100 , thereby increasing the distance between the buffer gasket 120 and the two sides along the length direction D1 of the suction cup body 100 . The adsorption area of the layer bag.

In other embodiments of the present application, the first suction hole 102a may not be provided on the first contact surface 102, but only an oblong hole may be provided on the second contact surface 121 as the first suction hole 122. In this embodiment, the first suction hole 122 on the second contact surface 121 is used to absorb the portion of the double-layer bag to be heat-sealed, and then after the heat-sealing knife enters the bag mouth, the second contact surface 121 is close to the heat-sealing knife until The heat sealing knife cooperates with the second contact surface 121 to heat seal the outer bag and the inner bag together.

The above-mentioned buffer pad 120 may be a rubber pad made of heat-resistant soft elastic material such as a silicone sheet. The magnetically conductive sheet can be made of steel sheets, iron sheets, etc. that are magnetically conductive sheet structures. The above-mentioned suction cup body 100 can be composed of a square tube and sealing plates located at both ends of the square tube. The sealing plate is sealingly connected to the pipe openings at both ends of the square pipe through screws, etc. A positioning groove is provided on one surface of the square tube, and an air source interface is provided on the other surface of the square tube opposite to the positioning groove, which is used to connect to the negative pressure equipment through air line joints, air line fittings, etc.

This application also provides a suction cup assembly for double-layer bag production, including an upper suction cup and a lower suction cup. The lower suction cup is arranged opposite to the upper suction cup, and the lower suction cup is located below the upper suction cup. The upper and lower suction cups are constructed identically. Both the upper suction cup and the lower suction cup are constructed as the above-mentioned suction cups for double-layer bag production.

The suction cup assembly for double-layer bag production according to the present application includes an upper suction cup and a lower suction cup. Both the upper suction cup and the lower suction cup adopt the above-mentioned suction cup structure. The use of the suction cup assembly for double-layer bag production of the present application can improve the efficiency of replacing the buffer gaskets of the upper suction cup and the lower suction cup, thereby reducing the occupation of production time by replacing the buffer gasket 120, thereby helping to ensure that the production operation can be stable conduct.

This application also provides a double-layer bag manufacturing equipment. The double-layer bag manufacturing equipment includes the above-mentioned suction cup assembly for double-layer bag production.

According to the double-layer bag manufacturing equipment provided by the present application, by applying the above-mentioned suction cup assembly for double-layer bag production, since the load-bearing member 110 and the buffer gasket 120 can be replaced as a whole, there is no need to manufacture the suction cup assembly from the double-layer bag. The equipment can be disassembled to replace the buffer gasket 120, which greatly improves the replacement efficiency, thereby helping to improve the production efficiency of the equipment.

Unless otherwise defined, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of this application. The terminology used herein is for the purpose of describing specific implementations only and is not intended to limit the application. Terms such as "arranged" when used herein may mean that one component is directly attached to another component or that one component is attached to another component through intermediaries. Features described herein in one embodiment may be applied to another embodiment alone or in combination with other features, unless the feature is inapplicable in that other embodiment or otherwise stated.

The present application has been described through the above-mentioned embodiments, but it should be understood that the above-mentioned embodiments are only for the purpose of illustration and illustration, and are not intended to limit the present application to the scope of the described embodiments. Those skilled in the art can understand that more variations and modifications can be made based on the teachings of this application, and these variations and modifications all fall within the scope of protection claimed by this application.

Claims

A suction cup for double-layer bag production, characterized in that the suction cup for double-layer bag production includes:

A suction cup body having a chamber located inside and a first contact surface located outside, the first contact surface being used to contact the outer surface of the double-layer bag, on the first contact surface, along the suction cup body The height direction is recessed to form a positioning groove;

a load-bearing member, the load-bearing member being detachably disposed into the positioning groove; and

a cushioning gasket connected to the load-bearing member, a surface of the cushioning gasket facing away from the load-bearing member forming a second contact surface for contacting the outer surface of the double-layer bag, and the cushioning gasket is connected to The positioning grooves are adapted to each other;

Wherein, the first contact surface and/or the second contact surface is provided with a first suction hole for adsorbing the outer surface of the double-layer bag, and the first suction hole is connected with the chamber.
The suction cup for double-layer bag production according to claim 1, wherein the load-bearing member is configured as a magnetically conductive sheet;

The suction cup for double-layer bag production also includes:

Magnetic component, the magnetic component is provided to the suction cup body and corresponds to the positioning slot. The magnetic component is used to apply magnetic attraction to the magnetically conductive sheet so that the magnetically conductive sheet is connected to the positioning groove. bottom of the trough.
The suction cup for double-layer bag production according to claim 2, characterized in that the positioning groove has:

bottom wall;

An end wall connected to an end of the bottom wall along the length direction of the suction cup body to define the positions of the magnetically conductive sheet and the buffer pad along the length direction; and

The side wall is connected to the end of the bottom wall along the width direction of the suction cup body to define the positions of the magnetically conductive sheet and the buffer pad along the width direction.
The suction cup for double-layer bag production according to claim 3, characterized in that there are two end walls, and the two end walls are respectively located at two ends of the bottom wall along the length direction. ; The side wall is provided with an opening, and an opening is formed at one end of the positioning groove away from the side wall along the width direction, and the size of the opening is suitable for the magnetic conductive sheet and the buffer gasket. to allow the magnetically conductive sheet and the buffer pad to pass through.
The suction cup for double-layer bag production according to claim 4, wherein the side wall is provided with a plug-in slot, and the magnetically conductive sheet has a plug-in protrusion extending outward along the width direction. The insertion flange is adapted to be inserted into the insertion slot to at least limit the degree of freedom of the magnetically conductive sheet along the height direction.
The suction cup for double-layer bag production according to claim 5, wherein the insertion slot and the insertion flange are spaced apart along the length direction.
The suction cup for double-layer bag production according to any one of claims 2 to 6, characterized in that the magnetic component is configured as a columnar magnet;

A mounting hole is provided at the bottom of the positioning slot. One end of the columnar magnet is embedded in the mounting hole. The other end of the columnar magnet is connected to the inner wall of the chamber. The length direction of the columnar magnet is parallel. in the height direction of the suction cup body.
The suction cup for double-layer bag production according to any one of claims 1 to 6, characterized in that the suction cup for double-layer bag production further includes:

Auxiliary suction cup, the auxiliary suction cup has a second suction hole, the direction of the second suction hole is consistent with the direction of the first suction hole, and the second suction hole does not exceed the height direction of the suction cup body. the second contact surface.
The suction cup for double-layer bag production according to claim 8, wherein the auxiliary suction cups are spaced apart along the length direction of the suction cup body, and the distance between two adjacent auxiliary suction cups is along the length of the suction cup body. The length direction decreases from the middle to both ends.
The suction cup for double-layer bag production according to claim 9, wherein the auxiliary suction cup is connected to the suction cup body, and the second suction hole is connected to the chamber.
The suction cup for double-layer bag production according to claim 9, wherein the auxiliary suction cup is configured as an L-shaped pipe fitting, and the L-shaped pipe fitting includes a first pipe body and a second pipe body, and the first pipe body The tube length direction is parallel to the height direction of the suction cup body, the tube length direction of the second tube body is parallel to the width direction of the suction cup body, and the second suction hole is provided at the other end of the first tube body , the other end of the second pipe body is connected to the suction cup body, and the lumen of the L-shaped pipe member is connected with the chamber.
The suction cup for double-layer bag production according to claim 4, wherein one end of the bottom wall away from the side wall along the width direction is formed with a groove, and the groove is formed along the length of the suction cup body. Direction extension settings.
A suction cup assembly for double-layer bag production, which is characterized by including:

upper suction cup; and

Lower suction cup, the lower suction cup is arranged opposite to the upper suction cup, and the lower suction cup is located on the underneath the upper suction cup;

The upper suction cup and the lower suction cup have the same structure, and both the upper suction cup and the lower suction cup are configured as the suction cup for double-layer bag production according to any one of claims 1 to 12.
A double-layer bag manufacturing equipment, characterized in that the double-layer bag manufacturing equipment includes the suction cup assembly for double-layer bag production according to claim 13.