JP3422718B2 - Stamping device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a marking device for marking the date of manufacture and the like on objects to be stamped sequentially conveyed by a conveyor. It can be used to print on a carton on a conveyor that is transported in a closed state. 2. Description of the Related Art FIG. 7 is a perspective view of a main part of a carton processing apparatus provided with a stamping device for stamping information such as a production date on a flat folded carton. In this case, the cartons (11) and (11) of the carton storage section (10) are taken out on the carton conveyor (21) by a carton take-out device (not shown), and are taken out on the carton conveyor (21). The cartons (11) and (11) are pushed by the transport claws (22) and (22) and pass through the arrangement of the stamping device (31). (A device that opens in a shape). [0003] The drive shaft (20) of the carton conveyor (21) and the conveyor drive motor (24) are connected by a transmission chain (25), and the drive shaft (20) and the fixing plate (31) of the marking device (31). 30)
The input shaft (34) penetrating the gear (A) or chain (370)
In the power transmission state. On the outer peripheral surface of the marking roller (33) fixed to the output end of the input shaft (34), an array of printed characters (37) and (37) is formed, and
The ink of the ink roller (39) is attached to the prints (37) and (37) via the transfer roller (38). [0004] A first adjoining portion below the stamping roller (33) is provided.
The support roller (32) is provided in a freely rotatable state. In this device, when the carton conveyor (21) is driven by the conveyor drive motor (24), the carton conveyor (21)
Gear unit (A) connected to one end of the drive shaft (20) of → → sprocket for marking drive (27) → chain (370) → sprocket
(35) → Input shaft (34) → Rotation force is transmitted along the path of the marking roller (33), which causes the carton (11) to
While being conveyed in (21), the marking device (31) starts the marking operation. The flap (13) of the carton (11), which is the object to be imprinted, conveyed by the carton conveyor (21) is applied to the imprint roller (33)
And the first support roller (32), the printed characters (37) and (37) (printing function) arranged on the outer periphery of the marking roller (33) are pressed against the surface of the flap (13). Information such as the date of manufacture is stamped. In this machine, a carton conveyor (21) and a marking device (31) are attached to a common conveyor drive motor (24).
Are mechanically connected by a chain (25) (370) or the like to drive both.Therefore, there is a difference between the transport speed of the carton (11) by the carton conveyor (21) and the peripheral speed of the marking roller (33). There is no. As a result, type (37) (37) and carton (11)
Can be prevented from slipping relatively, and a clear imprint can be obtained. [0006] However, the above-mentioned conventional one has the following problems. Since the drive shaft (20) of the carton conveyor (21) and the marking device (31) are mechanically connected via a chain (370) or the like, when changing the marking target position on the surface of the carton (11) After removing the chain (370) from the sprocket (35) that drives the marking roller (33), the marking roller (33) is slightly rotated manually to print the type (37).
(37) in the circumferential direction, and then the sprocket (3
The chain (370) must be re-engaged on 5) to drive the conveyor drive motor (24), and there is a problem that it takes time and effort to change the target marking position. [0007] The present invention has been made in view of the above points,
`` A marking device for marking a sheet body conveyed in a horizontal direction by a conveyor, wherein a horizontal marking roller having a printing function portion formed on an outer peripheral surface, and the printing function portion of the marking roller is An ink holding member that causes ink to adhere to the printing function portion when rotated to an ink supply position with rotation, and a speed of a printing surface of the outer surface of the sheet body parallel to a conveyance direction. A marking device for marking the surface to be stamped while rotating the marking roller so that the speed of the printing function unit is matched with the speed of the printing function unit. The task is to be able to do so. [0009] The technical means of the present invention for solving the above-mentioned problems is as follows: "a marking motor for rotating the marking roller and a speed for judging the traveling speed of the conveyor". Judgment means, marking position changing means for changing the contact timing of the printing function unit with the sheet by adjusting the start time of the marking motor, and a marking position changing means for changing the contact timing of the printing function unit with the sheet. Motor speed control means for controlling the marking motor so that the speed of the printing function unit is equal to the traveling speed determined by the speed determination means; and And first and second support rollers disposed above and below the stamping roller, and the first and second support rollers or the stamping roller cooperate with the stamping roller. Rotation direction switching means for switching the rotation direction of the marking motor for pressing the printing body and printing on the front surface or the back surface of the sheet body; Means for changing the height position of the rollers and the first and second support rollers. " The printing function part, which is a specific matter of the present invention, means a portion where a mark such as a print character or a rubber stamp is engraved. In this device, the traveling speed of the conveyor is determined by speed determining means, and the speed of the printing function part at the time of marking when the printing function part contacts the sheet body is equal to the traveling speed determined by the speed determining means. The marking motor is controlled by the motor speed control means so as to match. On the other hand, when the marking position changing means is operated, the starting point of the marking motor can be adjusted, whereby the marking function section formed on the marking roller driven by the marking motor comes into contact with the sheet member. Timing changes. Thereby, it is possible to perform marking in accordance with the marking target position set on the surface of the sheet member. Also, at the time of printing where the printing function part on the outer periphery of the printing roller comes into contact with the sheet, the target printing position (the portion to be printed on the printing surface) of the sheet is performed by the printing roller and the first support roller. It is pinched from both sides. Therefore, it is possible to reliably imprint even a weakly stiff sheet. Further, when the stamping motor is driven by inserting the sheet conveyed by the conveyor between the stamping roller and the first support roller, the stamping roller rotates to perform stamping on one surface of the sheet (first use). Aspect). Conversely, when printing on the other side of the sheet member, the conveyor (running in the same direction as in the first use mode) so that the sheet member can pass between the marking roller and the second support roller. ), A marking roller, a second support roller, and the like are moved in a direction perpendicular to the transfer surface. In this state, when the rotation direction of the printing motor is reversed by the rotation direction switching means and the sheet on the conveyor is inserted between the printing roller and the second support roller, the other surface of the sheet conveyed by the conveyor is printed. The rollers come into contact with each other, whereby the other surface of the sheet body can be stamped (second use mode). The present invention has the following specific effects. It is possible to respond to the change of the target marking position only by adjusting the starting point of the marking motor by the marking position changing means.
It is possible to easily cope with the change of the seal target position as compared with the above-described conventional one in which it is necessary to remove the chain (370) in order to change the seal target position. In addition, a first use mode in which the sheet is passed between the marking roller and the first support roller and a second use mode in which the sheet is passed between the stamp roller and the second support roller are selectively used. By doing so, it is possible to seal both the front and back of the sheet. Next, an embodiment of the present invention will be described. FIG. 1 is a perspective view of a main part of a carton processing device provided with a stamping device according to an embodiment of the present invention. The cartons (11) and (11) serving as sheets to be stamped as objects to be stamped stored in the carton accommodating section (10) are carton conveyors (21) as described above using a carton unloading device (not shown) in the same manner as the conventional one. ) To be taken out. [About Carton Conveyor (21)] FIG.
As shown in FIG. 2, the carton conveyor (21) includes a pair of endless ring-shaped parallel conveyor chains (28a) (28b) driven by sprockets (23a) (23b), and the conveyor chains (28a) (28). 28b) are provided with transfer claws (22a) and (22b) arranged at a constant pitch on the outer periphery of 28b). A drive shaft (20) is inserted through and fixed to the sprockets (23a) and (23b) in the same manner as the conventional one.
The drive shaft (20) is rotatably supported by support arms (17a) (17b) erected on the upper part of the main body frame (16) of the carton processing device. Further, a sprocket (41) externally fitted and fixed to the input end of the drive shaft (20) and a sprocket (41) which is externally fitted to a rotating shaft of a conveyor drive motor (24) (a servo motor is employed in this embodiment). 42) are connected by a transmission chain (25). [About the marking device (31)]
L-shaped brackets (51) and (51) are welded to the outer surface of the upright plate (14) erected on the top plate (15) of (6), and are attached to the brackets (51) and (51). The fixing device (31) according to the embodiment of the present invention is fixed by bolts (52) (52). Next, the structure of the marking device (31) will be described in detail. On a top surface of the base plate (61) fixed to the brackets (51), (51), a pair of parallel horizontal rails extending in a direction perpendicular to the traveling direction of the carton conveyor (21).
(62) and (62) are protruded. On the upper surface of the base plate (61), a dovetail groove (65) that dovetails with the horizontal rails (62) (62)
A slider (63) having a lower surface (65) formed thereon is provided, and a protruding arm protruding from a side wall of the slider (63).
A horizontal feed screw (55) is screwed into (54), and a handle for manual rotation is provided at the input end of the horizontal feed screw (55).
(56) is installed. The middle part of the horizontal feed screw (55) where the screw is not engraved is supported by a bearing (68) erected on the base plate (61), and the horizontal feed screw (55) is ) Is rotated, the horizontal feed screw (55)
A slider (63) having a protruding arm (54) screwed into the carton reciprocates in a direction of coming into contact with and separating from the carton conveyor (21). Vertical rails (67) (67) extending in the vertical direction project from surfaces of a pair of left and right vertical portions of a front frame (66) erected at one end of the substrate (60) of the slider (63). The dovetail grooves (72) (72) formed on one surface of the elevating plate (71) are fitted into the vertical rails (67) (67). A vertical feed screw (75) is screwed into a protruding arm (73) protruding from the back surface of the elevating plate (71), and the input side end of the vertical feed screw (75) is manually turned. A handle (76) for movement is attached. The middle part of the vertical feed screw (75) where the middle screw is not carved is supported by a bearing (78) projecting from the side surface of the front frame (66) of the slider (63), and the handle (76) When the vertical feed screw (75) is rotated in step (5), the elevating plate (71) having the protruding arm (73) screwed to the vertical feed screw (75) moves up and down along the vertical rails (67) and (67). I do. A servo motor (44), which is a marking motor capable of rotating forward and backward, is fixed to the back of the elevating plate (71), and the rotating shaft (40) of the servo motor (44) is connected to the elevating plate (71). ) Penetrates to the front side. A marking roller (33) is externally fixed to the rotation shaft of the servo motor (44) penetrating the front side of the elevating plate (71). Around the outer periphery of the marking roller (33), as in the case of the conventional roller described above, the type (37) (3)
7) is mounted, and the first and second parallel parts are located on the upper and lower adjacent parts of the marking roller (33) (positions shifted by 180 degrees relative to the outer peripheral direction of the marking roller (33)). Support rollers (3
2) (36) is provided so as to be freely rotatable. still,
A gap smaller than the thickness of the carton (11) is secured between the outer peripheral surfaces of the first and second support rollers (32) (36) and the stamping roller (33), and the carton ( When 11) enters, this is the marking roller (33) and the first and second support rollers.
(32) and (36). In the vicinity of the side of the marking roller (33), the ink of the ink roller (39) is attached to the printing surface of the printing function (37) (37) which is a printing function part on the outer periphery of the marking roller (33). A transfer roller (38) is provided for the transfer roller (38).
The rotating shaft (49) of the servo motor (44) extends through the elevating plate (71) and protrudes from the rear side thereof.
(40) is connected to a rotational force transmitting state via a transmission belt (not shown). The surface of the rotatable ink roller (39) comes into contact with the outer peripheral surface of the transfer roller (38), and the friction between the contact portion between the transfer roller (38) and the ink roller (39) is adjusted. When both rotate in conjunction with each other, the ink impregnated in the ink roller (39) adheres to the transfer roller (38), and the ink on the surface of the transfer roller (38) is printed and fixed on the marking roller (33). (37) It is transferred to the type surface of (37). Therefore, in the present embodiment, the transfer roller (38) and the ink roller (39)
Corresponds to the ink holder described above. A sensor mounting bar (81) extending toward the upstream side in the traveling direction of the carton conveyor (21) is connected to an upper portion of the elevating plate (71). Is provided with a sensor (82) for detecting the carton (11) before being supplied to the marking position by the marking device (31) and outputting a detection signal. Also, the base plate (6
1) is provided with an operation box (84), and the operation box (84) has a display unit (85) and input keys (86) (86).
Are arranged. The input keys (86) and (86) allow the phase of the servomotor (44) to be advanced or delayed at the time of stamping, whereby the type (37) ( 37) The contact timing can be changed. That is, the input key (86) (86) allows the carton (1
1) The distance B (see FIG. 5) from the leading end of the upper surface in the transport direction to the target marking position (94) can be set, and the distance B is stored in the operation box (84). Therefore, in the present embodiment, the input keys (86) and (86) and the functional unit in the operation box (84) for storing the distance B correspond to the above-described stamp position changing means. A rotation direction changeover switch (87) is provided near the input keys (86) and (86) as a rotation direction changeover means for changing the rotation direction of the servo motor (44) between the normal rotation direction and the reverse rotation direction. . The operation box (84) and the servo motor (44)
As shown in FIG. 3, the respective electric components are electrically connected to a control device (91) in which a microcomputer or a sequencer is incorporated. Next, the actual operation of the carton processing device will be described. First, the marking roller (33) and the lower first support roller (3) are rotated by rotating the handles (56) (76).
These markings are placed on the carton conveyor (21) so that the flaps (13) of the carton (11) (projecting from the side edge of the carton conveyor (21)) can enter the boundary of the carton conveyor (21). The height of the roller (33) and the first support roller (32) is adjusted. Next, when an operation switch (not shown) is turned on, the conveyor drive motor (24) rotates and the carton conveyor is turned on.
While (21) starts to run, the carton unloading device (not shown) operates and the carton (11) (11)
Are sequentially set forward of the transport claws (22a) (22b) of the carton conveyor (21) in the transport direction, whereby the carton (11)
(11) is pushed by the transport claws (22a) and (22b) of the carton conveyor (21) and is transported to the marking device (31). When a stamping start switch (not shown) is turned on in this state, the control device (91) for the stamping device (31) starts executing the control operation shown in FIG. First step (ST
Initial setting is made in 1). Specifically, the marking roller (33)
The arrangement position of the prints (37) and (37) attached to the outer peripheral surface of the printing roller is the initial position (a). (In this embodiment, as shown in FIG. The servo motor (44) is rotated and stopped until the printing function (printing part (37), (37) part is set at a deviated position) by 90 degrees in the direction. Next, the distance B from the tip of the upper surface of the carton (11) in the transport direction to the target marking position (94) is determined by the operation box (84).
Is read into the microcomputer of the control device (91) or the like (step (ST1a)). Sensor (82) in step (ST2)
Monitors whether the carton (11) outputs a detection signal. That is, it is monitored that the carton (11) is conveyed by the carton conveyor (21) to just below the sensor (82).
Then, when the sensor (82) outputs the detection signal, the step
In (ST3), it is monitored that the carton conveyor (21) travels for the reference distance A. The reference distance A is, as shown in FIG. 5, the first of the stopped characters (37) and (37) at the initial position (a).
The moving distance for moving to the marking position (99) facing the support roller (32) is S, and the horizontal distance between the rotation center of the marking roller (33) and the sensor (82) (the traveling direction distance of the carton conveyor (21)) is L. , The distance from the leading end of the upper surface of the carton (11) in the transport direction to the target marking position (94) is B, and the distance that the print (37) moves from the start of the rotation of the servomotor (44) to the completion of acceleration is Y. X, the distance until the type (37), (37) moves to the opposing portion of the first support roller (32), which is the marking position (99), is X, and the type (3)
7) While the part (37) starts to move and moves by the distance Y, assuming that the distance that the seal target position (94) at the reference position (95) moves is K, the carton (11) is detected. If the servo motor (44) is actuated when moved by the reference distance A, when the target marking position (94) reaches the marking position (99), the characters (37) and (37) are moved to the target marking position. (94) can be contacted at the same speed. Then, the reference distance A can be represented by A = LXKB. That is, when the reference distance A is set in this way, when the target stamp position (94) reaches the reference position (95), the servomotor (44) starts rotating, and the target stamp position (94) becomes the reference position (94). While moving only K from 95), the characters (37) and (37) move by Y, and then the marking target position (94) and the characters (37) and (37) move by X at the same speed and stamp. Match at position (99). Therefore, in the space between the first support roller (32) and the marking roller (33), which is the marking position (99), the marking target position (94) of the type (37) (37) and the carton (11) moves at the same speed. As a result, clear printing can be performed without causing the print surface of the prints (37) and (37) to slip on the print target position (94). The traveling speed and the traveling distance of the carton conveyor (21), that is, the transport speed and the transport distance of the carton (11) are determined based on the rotation amount and the rotational speed of the conveyor drive motor (24) including a servomotor. Therefore, the functional unit of the control device (91) that determines the speed of the conveyor drive motor (24) corresponds to the above-described speed determination unit. Therefore, after step (ST3), step (ST4) is executed to determine whether the rotation direction switch (87) has been switched to the normal rotation side or the reverse side of the servo motor (44). , Then step (ST5) or step (S
In T6), the moving speed of the type (37) (37) part (substantially coincides with the peripheral speed of the marking roller (33)) is
After accelerating the servo motor (44) until it becomes equal to the transport speed of the carton (11) by (1), the prints (37) and (37) return to the initial position (a) while maintaining this speed. Rotate the servo motor (44) up to. Therefore, in the present embodiment, step (ST3) and step (ST5) or step (ST5)
The function section in the microcomputer that executes the control of 6) corresponds to the motor control means described above. As a result, as described above, the seal target position
When (94) is conveyed to the marking position (99), the prints (37) and (37) come into contact with it at the same speed as the moving speed of the marking target position (94), whereby the marking can be performed. During this printing, the carton (11) is maintained in a state where the carton (11) is pressed by the printing roller (33) and the first support roller (32). If the type of the carton (11) changes and the target position (94) changes, the user presses the input keys (86) and (86) of the operation box (84) to seal the carton (11) from the tip. The distance B to the target position (94) is reset. Then, the aforementioned reference distance A is changed, and the phase of the servomotor (44) at the time of stamping is changed, whereby the stamped target position (94) after the change can be stamped. Therefore, when the target position (94) is changed, the chain
(370) can be easily changed in comparison with the above-described conventional one which requires removal. In the above embodiment, since the servomotor (44) does not operate unless the sensor (82) detects the carton (11), the missing part of the carton (11) is printed on the carton conveyor (21). The stamping operation is not performed even when the roller reaches the roller (33), and there is no inconvenience of blanking. Next, the operation of stamping on the lower surface of the carton (11) will be described. When marking the lower surface of the carton (11), the handle (76) is rotated to lower the elevating plate (71),
As a result, the marking roller (33) or the third roller (33) is moved to a height at which the carton (11) on the carton conveyor (21) can enter the upper marking portion (98), which is the boundary between the marking roller (33) and the second support roller (36). 2 Lower the support roller (36). Next, rotate direction selector switch (8
In 7), the rotation direction of the servo motor (44) is switched to the reversing side (the direction in which the marking roller (33) rotates in the direction of the imaginary arrow in FIG. 5). In this state, when the driving operation is started in the same manner as described above, the marking roller (33) rotates clockwise as indicated by an imaginary arrow in FIG. 5, and the carton (11) rotates the marking roller ( It is supplied between the 33) and the second support roller (36), whereby the letters (37) and (37) are pressed and stamped on the lower surface of the carton (11). During this marking, the carton (11) is maintained in a state where the carton (11) is nipped by the marking roller (33) and the upper second support roller (36). In the marking device according to the present embodiment, it is also possible to mark the central portion (19) located between the conveyor chains (28a) and (28b) in the carton (11). For this reason, as shown in FIG. 6, the upper and lower first and second support rollers (3
2) The central axis of (36) is fixed to adjustment holes (47) and (46) with respect to the vertically long holes (59) and (58) formed in the lifting plate (71). By loosening the adjustment bolts (47) and (46), the distance between the first and second support rollers (32) and (36) and the marking roller (33) can be adjusted. Therefore, by increasing the distance between the first and second support rollers (32) and (36) and the marking roller (33), the conveyor chains (28a) and (28b) can be connected to, for example, the marking roller (33) and the lower part. When the adjustment bolt (47) is tightened again by narrowing the space between the first support roller (32) and the marking roller (33) again, the carton (11) is inserted. ) Central part (19)
Can pass between the first support roller (32) and the marking roller (33). In this state, when the carton processing device is operated in the same manner as described above, the central portion (19) can be stamped. [Others] In the above-described embodiment, the carton (11) is targeted for marking. However, the carton (11) may be marked on a three-dimensional object such as a block which is conveyed by the conveyor (21). In this case, the first and second support rollers (32) and (36) are detached and stamped. In the above embodiment, a servo motor is adopted as the conveyor drive motor (24). Instead of this, a motor capable of speed control is adopted, and the motor or drive shaft is used.
An encoder for measuring the rotation amount of (20) may be provided, and the speed and the traveling distance of the conveyor (21) may be determined based on the output of the encoder. A reversible motor capable of speed control is adopted in place of the servo motor (44), and the reversible motor or the marking roller (3
An encoder for measuring the rotation amount of 3) may be provided, and the speed and the rotation amount of the reversible motor may be controlled based on the output of the encoder. In the above embodiment, the operation timing of the servo motor for marking (44) is determined based on the amount of rotation of the conveyor drive motor (24) after the carton (11) is detected by the sensor (82). However, by adopting an absolute servo motor as the conveyor driving servo motor (24) and monitoring the rotation amount of the absolute motor, the carton conveyor (21) can be moved by one pitch (the transported (22a) (22
(37) (3)
The sealing operation according to 7) may be performed.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a main part of a carton processing apparatus provided with a marking device according to an embodiment of the present invention. FIG. 2 is a cross-sectional view of a main part of the carton processing apparatus of FIG. FIG. 3 is an explanatory diagram of the carton processing device control device of FIG. 1; FIG. 4 is an explanatory diagram of a control operation of the carton processing device control device of FIG. 1; FIG. 5 is an operation explanatory diagram of the carton processing device control device of FIG. 6: Cross-sectional view of the portion where the marking roller (33), the first support roller (32), etc. are disposed. [FIG. 7] Description of the conventional example [Description of reference numerals] (11) Carton (31) Marking device (32) ··· First support roller (33) ··· Marking roller (36) ··· Second support roller (44) ··· Servo motor

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B31B 1/88 301 B65B 61/02

Claims (1)

(57) [Claim 1] A marking device for marking a sheet body conveyed in a horizontal direction by a conveyor, comprising: a horizontal marking roller having a printing function portion formed on an outer peripheral surface; An ink holder for attaching ink to the printing function unit when the printing function unit of the marking roller is rotated to an ink supply position with the rotation of the marking roller; and an outer surface of the sheet body. A printing apparatus that prints on the printing surface while rotating the printing roller so that the speed of the printing function portion matches the speed of the printing surface parallel to the transport direction of the printing device. A stamping motor to be driven; speed determining means for determining a traveling speed of the conveyor; and adjusting a start time of the stamping motor to change a contact timing of the printing function unit with the sheet member. Marking position changing means to be changed, and the marking motor so that the speed of the printing function part at the time of marking when the printing function part comes into contact with the sheet body coincides with the traveling speed determined by the speed determination means. A motor speed control means for controlling; a first and a second support roller arranged between the upper and lower sides of the stamping roller for pressing the sheet together with the stamping roller at the time of stamping; (2) a rotation direction switching means for switching the rotation direction of the printing motor to press the sheet body jointly by the supporting roller and the printing roller and to print on the front or back surface of the sheet body; Means for changing the height positions of the marking roller and the first and second support rollers in order to adjust the printing position.