Corrugated box flexographic printing detection device and detection method

Abstract

The application discloses a corrugated carton flexographic printing detection device and a detection method. The detection device comprises a fixing frame fixed on a flexographic printing equipment. The flexographic printing equipment comprises a printing device for flexographic printing of a carton board and a conveying device for conveying the flexographic printed carton board. The fixing frame is fixed on the side of the conveying device. The detection device further comprises a push rod capable of pushing the carton board off the conveying device. A control mechanism is installed on the fixing frame and is capable of driving the push rod to slide when invalid flexographic printing exists on the carton board passing through the fixing frame. The control mechanism is installed on the fixing frame. The application has the effects of reducing manual work and lowering labor cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of packaging printing, in particular to a corrugated carton flexographic printing detection device and a detection method. BACKGROUND

[0002] In recent years, the pre-printing and printing automation level of packaging printing enterprises is continuously improved, however, the quality detection link still relies on a large number of manual work. With the improvement of the requirements of the terminal market on packaging quality and delivery cycle, combined with the accelerated rise of labor cost year by year, the quality detection system begins to be favored by packaging printing enterprises. The visual detection technology is the most potential new technology in the field of precision testing technology, which comprehensively uses electronics, photoelectric detection, image processing and computer technology, introduces machine vision into industrial detection, realizes the rapid measurement of three-dimensional size or position of objects (products or parts), has the outstanding advantages of non-contact, fast speed and good flexibility, and has important application prospect in modern manufacturing industry.

[0003] At present, the quality detection of pre-printing corrugated carton mainly relies on the work of "carton picking workers", which requires a large number of labor and has a large labor cost. SUMMARY

[0004] In order to reduce the labor and reduce the labor cost of workers, the present application provides a corrugated carton flexographic printing detection device and a detection method.

[0005] In the first aspect, the present application provides a corrugated carton flexographic printing detection device, which adopts the following technical scheme:

[0006] The corrugated carton flexographic printing detection device comprises a fixing frame fixed on a flexographic printing equipment, the flexographic printing equipment comprises a printing device for flexographic printing on a carton board and a conveying device for conveying the flexographic printed carton board, the fixing frame is fixed on the side of the conveying device, the detection device further comprises a push rod capable of pushing the carton board off the conveying device, and a control mechanism for driving the push rod to slide when there is invalid flexographic printing on the carton board passing through the fixing frame is installed on the fixing frame.

[0007] By adopting the above technical scheme, the fixing frame is fixedly connected to the conveying device, and the control mechanism is installed on the fixing frame. When the carton board on the conveying device is conveyed to the position directly below the fixing frame, the control mechanism can detect the flexographic printing pattern on the carton board. When there is valid flexographic printing on the carton board, the push rod remains in the original state. When there is invalid flexographic printing on the carton board, the control mechanism makes the push rod slide, so that the push rod pushes the carton board off the conveying device, thereby completing the automatic detection and automatic screening work, reducing the labor and reducing the labor cost of workers.

[0008] Preferably, the control mechanism comprises a detection unit for detecting the printed pattern on the carton board and a control unit mounted on the fixed frame, the detection unit controls the sliding of the push rod through the control unit, and the fixed frame is further provided with an intermittent pushing assembly for intermittently controlling the power supply of the detection unit.

[0009] By using the above technical scheme, when the carton board is on the driving roller, the intermittent pushing assembly controls the conduction of the electric circuit of the detection unit when the conveying device moves the carton board to directly below the detection unit, so that the detection unit detects the flexographic printed pattern on the carton board, and when the carton board is pushed down or moved away, the intermittent pushing assembly loses the pushing force of the push rod and resets the push rod, so that the detection unit automatically detects the carton board when the carton board is directly below the detection unit.

[0010] Preferably, the intermittent pushing assembly comprises a motor fixed to the fixed frame, a fixed seat fixedly connected to the fixed frame, a sliding groove formed in the fixed seat, a sliding rod slidably arranged in the sliding groove, a pushing piece arranged in the sliding groove and capable of pushing the sliding rod out of the sliding groove, and a switch assembly arranged between the sliding rod and the inner wall of the sliding groove and capable of controlling the on-off of the power supply of the detection unit, wherein the switch assembly comprises a fixed contact embedded on the inner wall of the sliding groove, and a movable contact embedded on the sliding rod and capable of being in contact with the fixed contact, and the output shaft of the motor is fixedly connected with a cam capable of pushing the sliding rod into the sliding groove.

[0011] By using the above technical scheme, the motor is fixedly connected to the fixed frame, and the cam is fixedly connected to the output shaft of the motor, so that when the motor drives the cam to rotate, the cam can push the sliding rod into the sliding groove, so that the movable contact is in contact with the fixed contact, thereby making the electric circuit of the detection unit conductive, and as the cam continues to rotate, the sliding rod slides out of the sliding groove under the action of the pushing piece, so that the electric circuit of the detection unit is disconnected, thereby enabling the detection unit to automatically detect the flexographic printed pattern on the paperboard when the paperboard reaches directly below the detection unit, and automatically stop detecting after the carton board moves away.

[0012] Preferably, the pushing piece is a pushing spring, one end of the pushing spring abuts against the inner wall of the sliding groove away from the cam, and the other end of the pushing spring abuts against the end face of the sliding rod away from the cam.

[0013] By using the above technical scheme, one end of the pushing spring abuts against the inner wall of the sliding groove away from the cam, and the other end of the pushing spring abuts against the end face of the sliding rod away from the cam, so that the pushing piece can push the sliding rod out of the sliding groove.

[0014] Preferably, the conveying device is fixed with a fixed block, a sliding hole is formed in the fixed block, the push rod is slidably arranged in the sliding hole, and a driving mechanism for driving the push rod to slide and a reset member for resetting the push rod are arranged on the fixed block.

[0015] By adopting the above technical scheme, the driving mechanism can drive the push rod to slide under the control of the control unit of the detection unit, and the push rod can push the carton board off the transmission device. When the electric circuit of the detection unit is disconnected or the flexographic pattern on the carton board is valid, the control unit does not send a control action to the driving mechanism. At this time, the reset member pushes the push rod away from the carton board and resets it.

[0016] Preferably, a limiting groove is formed in the side surface of the sliding hole, and a limiting block is fixedly connected to the side surface of the push rod and slidably arranged in the limiting groove.

[0017] By adopting the above technical scheme, the limiting block is slidably arranged in the limiting groove, thereby preventing the push rod from being separated from the fixed block, and the push rod can be more stably slidably arranged on the fixed block.

[0018] Preferably, the reset member is a reset spring, one end of the reset spring abuts against the side wall of the limiting groove close to the carton board, and the other end of the reset spring abuts against the side surface of the limiting block close to the carton board.

[0019] By adopting the above technical scheme, one end of the reset spring abuts against the side wall of the limiting groove close to the carton board, and the other end of the reset spring abuts against the side surface of the limiting block close to the carton board, so that the reset member can push the push rod away from the carton board and reset it.

[0020] Preferably, a strip-shaped groove is formed in the inner wall of the sliding hole, a sliding block is fixedly connected to the side surface of the push rod, an attracting block is fixedly connected to the sliding block, and an electromagnet for attracting the attracting block to slide is fixedly connected to the end wall of the strip-shaped groove close to the carton board.

[0021] By adopting the above technical scheme, the attracting block is fixedly connected to the sliding block, and the electromagnet is fixedly connected to the end wall of the strip-shaped groove close to the carton board. The detection unit can control the electromagnet to attract the attracting block through the control unit, so that the attracting block can drive the push rod to push the carton board off the conveying device.

[0022] In the second aspect, the present application provides a corrugated carton flexographic printing detection method, which adopts the following technical scheme:

[0023] The corrugated carton flexographic printing detection method comprises the following steps: S1: feeding a paper board into the flexographic printing equipment; S2: starting the flexographic printing equipment; S3: starting the conveying equipment; and S4: starting the motor.

[0024] By adopting the above technical scheme, after the paper box board is flexographically printed by the flexographic printing device, the paper box board is transferred by the conveying device, and in the transferring process, the motor drives the cam to rotate to enable the detection unit to automatically detect the flexographic printing patterns on the paper box board one by one, thereby reducing manual work.

[0025] To sum up, the present application has at least one of the following beneficial technical effects:

[0026] 1. The fixed frame is fixedly connected to the conveying device, the control mechanism is installed on the fixed frame, when the paper box board on the conveying device is conveyed to the position directly below the fixed frame, the control mechanism can detect the flexographic printing patterns on the paper box board, when there is valid flexographic printing on the paper box board, the push rod remains in the original state, when there is invalid flexographic printing on the paper box board, the control mechanism enables the push rod to slide, so that the push rod pushes the paper box board off the conveying device, thereby completing the automatic detection and automatic screening work, reducing manual work and labor cost of workers;

[0027] 2. The paper box board is located on the driving roller, when the conveying device moves the paper box board to the position directly below the detection unit, the intermittent push assembly controls the conduction of the electric circuit of the detection unit, so that the detection unit detects the flexographic printing patterns on the paper box board, when the paper box board is pushed off or moved away, the intermittent push assembly loses the pushing force on the push rod and enables the push rod to reset, so that the detection unit automatically detects the paper box board when the paper box board is located directly below the detection unit;

[0028] 3. The motor is fixedly connected to the fixed frame, and the cam is fixedly connected to the output shaft of the motor, when the motor drives the cam to rotate, the cam can push the sliding rod into the sliding groove, so that the movable contact piece and the fixed contact piece are in contact, thereby enabling the electric circuit of the detection unit to be conducted, with the continuous rotation of the cam, the sliding rod slides out of the sliding groove under the action of the pushing piece, so that the electric circuit of the detection unit is disconnected, thereby enabling the detection unit to automatically detect the flexographic printing patterns on the paper box board when the paper box board reaches the position directly below the detection unit, and automatically stop detecting after the paper box board is moved away. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is the overall structure schematic diagram of the flexographic printing device in the embodiment of the present application.

[0030] Figure 2 is the overall structure schematic diagram of the detection device in the embodiment of the present application.

[0031] Figure 3 is the sectional view of the fixed block in the embodiment of the present application.

[0032] Figure 4 is the sectional view of the fixed seat in the embodiment of the present application.

[0033] MARKED FOR EXPLANATION:

[0034] 1, printing device; 2, conveying device; 21, mounting frame; 22, driving roller; 3, detecting device; 31, fixed frame; 32, fixed block; 321, sliding hole; 3221, limiting groove; 3222, strip-shaped groove; 33, push rod; 331, limiting block; 332, sliding block; 333, suction block; 334, electromagnet; 335, reset member; 3351, reset spring; 34, control mechanism; 341, detecting unit; 342, control unit; 35, intermittent pushing assembly; 351, motor; 352, fixed seat; 3521, sliding groove; 353, sliding rod; 354, cam; 355, pushing member; 3551, pushing spring; 356, switch assembly; 3561, fixed contact; 3562, movable contact; 100, carton board; 200, flexographic printing equipment. DETAILED DESCRIPTION

[0035] The following will be described in detail with reference to the accompanying drawings. Figures 1-4 The present application will be further described in detail.

[0036] The embodiments of the present application disclose a flexographic printing detecting device 3 for corrugated carton. Referring to Figure 1 and Figure 2 , the flexographic printing equipment 200 comprises a printing device 1 and a conveying device 2. The printing device 1 is used for flexographic printing of the carton board 100, and the conveying device 2 is used for conveying the flexographic printed carton board 100. The conveying device 2 comprises a mounting frame 21 and a plurality of driving rollers 22 rotatably arranged on the mounting frame 21. The carton board 100 is located on the driving rollers 22, and the driving rollers 22 can convey the carton board 100 when rotating.

[0037] Referring to Figure 1 and Figure 2 , the detecting device 3 comprises a fixed frame 31, a fixed block 32, a push rod 33 and a control mechanism 34. The fixed frame 31 comprises a vertical section and a horizontal section. The vertical section of the fixed frame 31 is fixedly connected to the side surface of the mounting frame 21, and the horizontal section of the fixed frame 31 is located above the driving rollers 22.

[0038] Referring to Figure 1 and Figure 2 , referring to Figure 1As shown in the figure, the control mechanism 34 comprises a detection unit 341, a control unit 342 and an intermittent pushing assembly 35. The detection unit 341 is fixedly connected to the end face of the horizontal section of the fixed frame 31 away from the vertical section, and is used for detecting the printed pattern on the carton board 100. The control unit 342 is installed on the top surface of the horizontal section of the fixed frame 31. The intermittent pushing assembly 35 is also arranged on the fixed frame 31. When the conveying device 2 conveys the carton board 100 directly below the fixed frame 31, the detection unit 341 can detect the flexographic printed pattern on the carton board 100 and transmit the detection signal to the control unit 342.

[0039] Referring to Figure 2 and Figure 3 As shown in the figure, the intermittent pushing assembly 35 comprises a motor 351 fixedly connected to the top surface of the horizontal section of the fixed frame 31, a fixed seat 352 fixedly connected to the fixed frame 31, the motor 351 being located on the side of the fixed seat 352 away from the detection unit 341, a sliding groove 3521 being formed on the side of the fixed seat 352 close to the motor 351, the sliding groove 3521 being horizontally formed on the side of the fixed seat 352 away from the detection unit 341, a sliding rod 353 being slidably arranged in the sliding groove 3521, a pushing element 355 being arranged in the sliding groove 3521 for pushing the sliding rod 353 out of the sliding groove 3521, a switch assembly 356 being arranged between the sliding rod 353 and the inner wall of the sliding groove 3521 for controlling the on-off power of the detection unit 341, the switch assembly 356 comprising a fixed contact 3561 embedded on the inner wall of the sliding groove 3521, a movable contact 3562 embedded on the sliding rod 353 and capable of being in contact with the fixed contact 3561, and a cam 354 fixedly connected to the output shaft of the motor 351 for pushing the sliding rod 353 into the sliding groove 3521.

[0040] Referring to Figure 2 and Figure 3 As shown in the figure, the pushing element 355 is a pushing spring 3551, one end of the pushing spring 3551 abutting against the inner wall of the sliding groove 3521 away from the cam 354, and the other end of the pushing spring 3551 abutting against the end face of the sliding rod 353 away from the cam 354.

[0041] Referring to Figure 2 and Figure 4 As shown in the figure, the fixed block 32 is fixedly connected to the top surface of the mounting frame 21 and is located on one side of the fixed frame 31. A sliding hole 321 is horizontally formed on the side of the fixed block 32, and a push rod 33 is horizontally slidably arranged in the sliding hole 321. The fixed block 32 is provided with a driving mechanism for driving the push rod 33 to slide and a reset element 335 for resetting the push rod 33.

[0042] Referring to Figure 2 and Figure 4As shown, a limiting groove 3221 is arranged on the side of the sliding hole 321, the length direction of the limiting groove 3221 is parallel to the length direction of the sliding hole 321, the limiting groove 3221 is located on the bottom wall of the sliding hole 321, a limiting block 331 is fixedly connected on the side of the push rod 33, and the limiting block 331 is slidingly arranged in the limiting groove 3221. The reset member 335 is a reset spring 3351, one end of the reset spring 3351 abuts against the side wall of the limiting groove 3221 close to the carton board 100, and the other end of the reset spring 3351 abuts against the side of the limiting block 331 close to the carton board 100.

[0043] Referring to Figure 2 and Figure 4 As shown, a strip-shaped groove 3222 is arranged on the inner wall of the sliding hole 321, the length direction of the strip-shaped groove 3222 is parallel to the length direction of the sliding hole 321, the strip-shaped groove 3222 is located on the top wall of the sliding hole 321, a sliding block 332 is fixedly connected on the side of the push rod 33, an attracting block 333 is fixedly connected on the sliding block 332, and an electromagnet 334 capable of attracting the attracting block 333 to slide is fixedly connected on the end wall of the strip-shaped groove 3222 close to the carton board 100. The detection unit 341 controls the electromagnet 334 to generate attraction to the attracting block 333 through the control unit 342, so as to control the sliding of the push rod 33.

[0044] Referring to Figure 2 and Figure 4 As shown, when the detection unit 341 detects that the flexographic pattern on the carton board 100 is invalid, the detection unit 341 transmits a detection signal to the control unit 342, the control unit 342 controls the electric circuit of the electromagnet 334 to be turned on, at this time, the electromagnet 334 attracts the attracting block 333, so that the attracting block 333 drives the push rod 33 to push the carton board 100 off the conveying device 2, when the electric circuit of the detection unit 341 is turned off or the flexographic pattern on the carton board 100 is valid, the control unit 342 does not control the electromagnet 334, at this time, the electric circuit of the electromagnet 334 is turned off, and the push rod 33 is kept in the reset state under the elastic force of the reset spring 3351.

[0045] The implementation principle of the corrugated box flexographic printing detection device 3 is as follows: when the paper box board 100 moves to the position directly below the detection unit 341, the cam 354 can push the sliding rod 353 into the sliding groove 3521, so that the movable contact piece 3562 is in contact with the fixed contact piece 3561, so that the electric circuit of the detection unit 341 is conducted, and the detection unit 341 detects the flexographic printing pattern on the paper box board 100; when there is effective flexographic printing on the paper box board 100, the push rod 33 remains in the original state; when there is invalid flexographic printing on the paper box board 100, the control unit 342 controls the magnet to be electrified, at this time the electromagnet 334 attracts the suction block 333, and the suction block 333 drives the push rod 33 to slide, so that the push rod 33 pushes the paper box board 100 off the conveying device 2, and the automatic detection and automatic screening work are completed, the manual work is reduced, and the labor cost of workers is reduced.

[0046] The corrugated box flexographic printing detection method is also disclosed in the embodiment of the application, and includes the following steps: S1: putting a paper board into the flexographic printing device 200; S2: starting the flexographic printing device 200; S3: starting the conveying device 12; and S4: starting the motor 351.

[0047] The above are preferred embodiments of the application, and do not limit the protection scope of the application, so that: equivalent changes made according to the structure, shape and principle of the application should be covered in the protection scope of the application.

Claims

1. A flexographic print detection apparatus for corrugated cartons, characterized by: The detection device (3) comprises a fixing frame (31) fixed on the flexographic printing equipment (200), the flexographic printing equipment (200) comprises a printing device (1) for flexographic printing of carton board (100) and a conveying device (2) for conveying the flexographic printed carton board (100), the fixing frame (31) is fixed on the side of the conveying device (2), the detection device (3) further comprises a push rod (33) capable of pushing the carton board (100) off the conveying device (2), a control mechanism (34) for driving the push rod (33) to slide when there is invalid flexographic printing on the carton board (100) passing through the fixing frame (31) is installed on the fixing frame (31); The control mechanism (34) comprises a detection unit (341) for detecting the printing pattern on the carton board (100) and a control unit (342) installed on the fixing frame (31), the detection unit (341) controls the sliding of the push rod (33) through the control unit (342), and an intermittent driving assembly (35) for intermittently powering the detection device (3) is further arranged on the fixing frame (31); The intermittent driving assembly (35) comprises a motor (351) fixed on the fixing frame (31), a fixed seat (352) is fixedly connected on the fixing frame (31), a sliding groove (3521) is formed in the fixed seat (352), a sliding rod (353) is slidably arranged in the sliding groove (3521), a pushing piece (355) is arranged in the sliding groove (3521) and capable of pushing the sliding rod (353) out of the sliding groove (3521), a switch assembly (356) for controlling the on-off of the detection unit (341) is arranged between the sliding rod (353) and the inner wall of the sliding groove (3521), the switch assembly (356) comprises a fixed contact (3561) embedded on the inner wall of the sliding groove (3521), a movable contact (3562) is embedded on the sliding rod (353) and capable of being in contact with the fixed contact (3561), and a cam (354) capable of pushing the sliding rod (353) into the sliding groove (3521) is fixedly connected on the output shaft of the motor (351).

2. The flexographic printed corrugated box detection apparatus of claim 1, wherein: The pushing piece (355) is a pushing spring (3551), one end of the pushing spring (3551) abuts against the inner wall of the sliding groove (3521) away from the cam (354), and the other end of the pushing spring (3551) abuts against the end face of the sliding rod (353) away from the cam (354).

3. The flexographic printed corrugated box detection apparatus of claim 1, wherein: A fixed block (32) is fixed on the conveying device (2), a sliding hole (321) is formed in the fixed block (32), the push rod (33) is slidably arranged in the sliding hole (321), and a driving mechanism capable of driving the push rod (33) to slide and a reset piece (335) for resetting the push rod (33) are arranged on the fixed block (32).

4. The flexographic printed corrugated box detection apparatus of claim 3, wherein: A limiting groove (3221) is arranged on the side of the sliding hole (321), and a limiting block (331) is fixedly connected to the side of the push rod (33), and the limiting block (331) is slidingly arranged in the limiting groove (3221).

5. The flexographic printed corrugated box detection apparatus of claim 4, wherein: The reset member (335) is a reset spring (3351), one end of the reset spring (3351) abuts against the side wall of the limiting groove (3221) close to the carton board (100), and the other end of the reset spring (3351) abuts against the side of the limiting block (331) close to the carton board (100).

6. The flexographic printed corrugated box detection apparatus of claim 3, wherein: A strip-shaped groove (3222) is arranged on the inner wall of the sliding hole (321), a sliding block (332) is fixedly connected to the side of the push rod (33), the sliding block (332) is fixedly connected with an attracting block (333), and an electromagnet (334) capable of attracting the attracting block (333) to slide is fixedly connected to the end wall of the strip-shaped groove (3222) close to the carton board (100).

7. The method for detecting flexographic printing of corrugated boxes, applied to the device for detecting flexographic printing of corrugated boxes according to claim 6, characterized in that, The method comprises the following steps: S1: feeding the paperboard into the flexographic printing equipment (200); S2: starting the flexographic printing equipment (200); S3: starting the conveying device (2); S4: starting the motor (351).

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