CN210080093U

CN210080093U - On-line detection system for injection molding finished product of in-mold label

Info

Publication number: CN210080093U
Application number: CN201920513496.0U
Authority: CN
Inventors: 高英荣
Original assignee: Deqing Torch Electronic Technology Co Ltd
Current assignee: Deqing Torch Electronic Technology Co Ltd
Priority date: 2019-04-16
Filing date: 2019-04-16
Publication date: 2020-02-18
Anticipated expiration: 2029-04-16

Abstract

The utility model discloses an on-line detection system for a label-in-film injection molding finished product, which comprises an electrical cabinet, a first work stack and a second work stack, wherein the first work stack and the second work stack are sequentially arranged on a conveying line from front to back; the first stack is used for detecting the periphery of the product in the horizontal direction and detecting whether empty labels exist, the width of label seams is abnormal, the labels are exposed and white, and the labels are damaged; the second workshop is used for carrying out dirt detection on the outer opening, the inner wall and the bottom surface of the product; the electrical cabinet controls the first work stack and the second work stack. The utility model discloses can carry out accurate detection to the product on the automation line at a high speed in real time to carry out the accuracy to reject the defective products, can increase substantially production efficiency, and promote the product quality.

Description

On-line detection system for injection molding finished product of in-mold label

Technical Field

The utility model relates to a finished product's on-line measuring system is moulded plastics about membrane internal label.

Background

At present, in the production process of a known film internal labeling product, defective products such as empty labels, abnormal label seam width, label white exposure, label breakage, material shortage, dirt and the like can be produced due to material supply or a production process. Because automatic production line is fast, can't accomplish real-time on-line measuring, can only arrange the production staff to detect the product one by one after automatic injection moulding production line rear end adopts the mode of pile up neatly, prevent that the defective products from flowing, then rely on the eyes to judge whether accord with the standard of product regulation according to the eye at the production line end to above-mentioned other defects, accord with then through this product, do not accord with then take out it and place to defective products recovery district. This approach has several disadvantages:

1. at least more than three employees are required to be arranged in each production line in each shift, so that the cost is high, and the detection efficiency is low.

2. The judgment standards of detection are difficult to unify, and different inspectors may not judge the products in the same processing critical state according to subjective consciousness.

3. The method is characterized in that an inspector works for a long time, so that the situations of eye fatigue, judgment force reduction and judgment error are easy to occur, and sometimes even the situation that the judgment is right but the placement is wrong occurs due to long-time continuous operation, and good products are placed in a defective product area, so that the rejection rate is increased; if the defective product is erroneously directly introduced into the finished product zone without being taken, a serious quality problem occurs.

4. Because the production speed is fast, a quality inspector roughly identifies products and can only detect the products with larger defects.

SUMMERY OF THE UTILITY MODEL

To the above problem, the utility model provides an on-line measuring system about membrane internal label finished product of moulding plastics to the problem pointed out in the background art has effectively been solved.

The utility model adopts the technical proposal that:

an on-line detection system for an injection molding finished product of an in-film label comprises an electrical cabinet, a first work stack and a second work stack, wherein the first work stack and the second work stack are sequentially arranged on a conveying line;

the first stack is used for detecting the periphery of the product in the horizontal direction and detecting whether empty labels exist, the width of label seams is abnormal, the labels are exposed and white, and the labels are damaged;

the second workshop is used for carrying out dirt detection on the outer opening, the inner wall and the bottom surface of the product;

the electrical cabinet controls the first work stack and the second work stack.

Preferably, the electrical cabinet comprises an industrial host, a light source controller, a PLC, an electromagnetic valve and a display.

Preferably, the first work stack comprises a first box body, a first light source, four first industrial cameras, a first trigger sensor and a first removing device.

Preferably, the first light source is installed on the inner side of the top of the first box body, and the four first industrial cameras are uniformly distributed around the first box body in the horizontal direction.

Preferably, the first removing device comprises a first blowing sensor and a first blowing nozzle, and the first blowing nozzle is connected with the port No. 1 of the electromagnetic valve.

Preferably, the second work stack comprises a second box body, a second light source, a second industrial camera, a second trigger sensor and a second rejecting device.

Preferably, the second industrial camera is installed inside the top of the second housing, and the second light source is disposed below the second industrial camera.

Preferably, the second removing device comprises a second blowing inductor and a second blowing nozzle, and the second blowing nozzle is connected with the No. 2 port of the electromagnetic valve.

Industry camera passes through the giga net and is connected with industry host computer, the IO line of industry camera is connected with PLC, first trigger inductor and second trigger inductor are connected with PLC, the PLC output port is connected with the trigger line of first industry camera and second industry camera, light source controller is connected with input port and first trigger inductor and second trigger inductor, No. 1 output port of light source controller links to each other with first light source, No. 2 output port links to each other with the second light source, PLC and first sensor that blows, the second sensor and the solenoid valve of blowing is connected.

The utility model discloses can carry out accurate detection to the product on the automation line at a high speed in real time to carry out the accuracy to reject the defective products, can increase substantially production efficiency, and promote the product quality.

The technical difficulty to be solved is as follows: the packaging label seam on a product can appear in the visual field of any first industrial camera when a single product rotates by any 360 degrees, the imaging width of the seam when the seam is directly opposite to a certain first industrial camera is unequal to the imaging width of the seam when the seam is on the upper side, and the label on the conical product must be calculated by adopting an algorithm formula, so that the true width size of the seam can be accurately measured when the seam is detected at any position in the visual field of the first industrial camera;

the technical difficulty to be solved is two: the size detection needs to be carried out on the left side and the right side of a single product respectively for detecting the dislocation of the bottom of the label, whether the product belongs to poor label dislocation is judged through the difference between the maximum size and the minimum size, and due to the fact that the product is conical, after the product is actually imaged on the plane of a second industrial camera, a circle of white actual imaging with uniform height is in a shape with the middle height and the two sides becoming lower gradually, the sizes of the two sides need to be corrected automatically in real time according to the shape, and the real height value can be obtained for difference processing.

Solving the technical difficulties of three: when label dislocation is processed, the equal-interval distribution detection calipers are required to be used for measuring the exposure heights of different positions, however, if a seam is in the current visual field, the calipers can happen to have one end just clamped on the seam line and cannot correctly obtain a boundary edge, so the algorithm needs to analyze according to the coordinate value of the current seam, the position of the current calipers is judged, and if the calipers appear on the seam line, the measurement is carried out after the offset is automatically carried out leftwards or rightwards.

Solving the technical difficulties of four: the belt is acted as go-between for the production rhythm that adapts to the injection molding machine, need divide twice to place the product of once demolding and pull open the product interval and detect, owing to can the shut down operation waits for the blowing midway, so can't adopt the mode of timing rejection, installs a inductor now and assists the rejection, and after the defective products result sent, the inductor waited for the product to pass through carries out the control solenoid valve and blows and rejects the product.

Drawings

FIG. 1 is a flow chart of the operation of the detection system of the present invention;

FIG. 2 is a schematic structural view of the detection system of the present invention;

in the figure: 1. the industrial host computer, 2, a display, 3, a first box, 4, a second box, 5, a first trigger sensor, 6, a first industrial camera, 7, a first light source, 8, a light source controller, 9, a first blowing sensor, 10, a first blowing nozzle, 11, a PLC, 12, a second trigger sensor, 13, a second light source, 14, a second industrial camera, 15, a second blowing sensor, 16, a second blowing nozzle, 17, an electrical cabinet, 18, an electromagnetic valve and 19, and a belt.

Detailed Description

The present invention will be described in further detail below with reference to specific embodiments and with reference to the attached drawings.

Example 1

As shown in fig. 1-2, an on-line detection system for injection molded products related to in-film labeling comprises an electrical cabinet 17, and a first work stack and a second work stack which are sequentially arranged on a conveying line;

and the electrical cabinet 17 controls the first and second work stacks.

The electrical cabinet 17 includes an industrial mainframe 1, a light source controller 8, a PLC11, a solenoid valve 18, and a display 2.

The first work stack comprises a first box body 3, a first light source 7, four first industrial cameras 6, a first trigger sensor 5 and a first removing device.

The first light sources 7 are arranged on the inner side of the top of the first box body 3, and the four first industrial cameras 6 are uniformly distributed on the periphery of the first box body 3 in the horizontal direction.

The first removing device comprises a first blowing sensor 9 and a first blowing nozzle 10, and the first blowing nozzle 10 is connected with the port 1 of the electromagnetic valve 18.

The second work stack comprises a second box 4, a second light source 13, a second industrial camera 14, a second trigger sensor 12 and a second rejecting device.

The second industrial camera 14 is installed inside the top of the second housing 4, and the second light source 13 is disposed below the second industrial camera 14.

The second removing device comprises a second blowing inductor 15 and a second blowing nozzle 16, and the second blowing nozzle 16 is connected with the No. 2 port of the electromagnetic valve 18.

The system adopts a 360-degree visual angle to detect products, when defects exist in online detection, the products are automatically removed online, aiming at the problem that the products are possibly positioned inaccurately, a positioning mechanism can be arranged to guide the products before the products enter a first stack, the position of the advancing direction of the products is limited by the induction of a sensor, the detection system can be triggered to detect only when the products are sensed, as the products enter a detection range at any angle of 360 degrees when the front end enters a detection area, four first industrial cameras are adopted to distribute one camera for every 90 degrees of the whole product, as long as label seams are detected in each camera, the width of the seams is automatically calculated, meanwhile, the labels in each first industrial camera are subjected to blank mark, breakage and exposure judgment, and a second industrial camera is used for carrying out dirty detection on the outer opening, the inner wall and the bottom surface of the products right above a second stack, each edge corner of the surface is covered, so that the blind-area-free detection effect is realized, the labor cost can be reduced, the production efficiency can be greatly improved, and the detection speed is matched with the production speed.

The working principle of the system is as follows:

after the first trigger sensor 5 senses a product, a signal is transmitted to a port 1 of the light source controller 8, the light source controller 8 controls the first light source 7 to flash, meanwhile, the signal also controls the four first industrial cameras 6 to capture images, after the first industrial cameras 6 on the four sides capture images, images are transmitted to the industrial host 1 to be analyzed, if a bad result is analyzed, the industrial host 1 transmits the signal to the port 1 of the PLC11, after the PLC11 acquires the signal, the signal is retained, and when the first blowing sensor 9 senses that the product arrives, the PLC11 controls the port 1 of the electromagnetic valve 18 to act to drive the first blowing nozzle 10 to blow the product, and the product is blown off; if a good product is analyzed, the product is driven by the belt 19 to continuously move to the second trigger sensor 12, after the second trigger sensor 12 senses the product, a signal is transmitted to the port 2 of the light source controller 8, the light source controller 8 controls the second light source 13 to flash, meanwhile, the signal also controls the second industrial camera 14 to capture an image, after the second industrial camera 14 captures the image, the image is transmitted to the industrial host 1 to be analyzed, if a bad result is analyzed, the industrial host 1 transmits the signal to the port 2 of the PLC11, after the PLC11 acquires the signal, the signal is retained, when the second blowing sensor 15 senses that the product arrives, the PLC11 controls the port 2 of the electromagnetic valve 18 to move to drive the second blowing nozzle 16 to blow, the product is blown off, if a good product is analyzed, the product is driven by the belt 19 to continuously move backwards.

The action of the belt 19 needs to be communicated with a front-end discharging mechanism, the belt 19 stops when discharging is conducted, after the discharging is completed, the belt 19 moves, the speed of a single product passing through the trigger sensor is high, the setting exposure of the first industrial camera 6 and the second industrial camera 14 needs to be controlled to be less than 1ms, and otherwise, the shooting in the moving process can cause that the shot image cannot be used for detection.

Claims

1. An on-line detection system for injection molding finished products of in-mold labels is characterized by comprising

The device comprises an electric cabinet, a first work stack and a second work stack, wherein the first work stack and the second work stack are sequentially arranged on a conveying line;

the electrical cabinet controls the first work stack and the second work stack.

2. The on-line detection system for the in-film label injection-molded finished product according to claim 1, wherein the electrical cabinet comprises an industrial host, a light source controller, a PLC, an electromagnetic valve and a display.

3. The on-line detection system for the in-film labeling and injection molding finished product as claimed in claim 2, wherein the first work stack comprises a first box body, a first light source, four first industrial cameras, a first trigger sensor and a first rejecting device.

4. The on-line detection system for the in-mold labeling injection molded product as claimed in claim 3, wherein the first light source is installed at the inner side of the top of the first box body, and the four first industrial cameras are uniformly distributed around the first box body in the horizontal direction.

5. The on-line detection system for the in-mold labeling injection molded products as claimed in claim 4, wherein the first removing device comprises a first blowing sensor and a first blowing nozzle, and the first blowing nozzle is connected with port 1 of the electromagnetic valve.

6. The on-line detection system for the in-film labeling and injection molding finished product as claimed in claim 2, wherein the second process stack comprises a second box body, a second light source, a second industrial camera, a second trigger sensor and a second rejecting device.

7. The on-line detection system for the in-film labeled injection molded product as claimed in claim 6, wherein the second industrial camera is installed inside the top of the second box, and the second light source is disposed below the second industrial camera.

8. The on-line detection system for the in-film labeling injection molding finished product as claimed in claim 7, wherein the second removing device comprises a second blowing sensor and a second blowing nozzle, and the second blowing nozzle is connected with the No. 2 port of the electromagnetic valve.