Defective product removing device of folder gluer

Abstract

The invention discloses a defective product removing device of a folder gluer, and mainly relates to the technical field of folder gluers. Comprising a fixed frame, a first movable frame and a second movable frame, the second movable frame is provided with a fixed clamp and slidably connected with a movable clamp, the second movable frame is provided with an inclined groove, the two ends of the movable clamp are provided with guide columns in sliding contact with the inclined groove respectively, the fixed clamp is provided with a limiting groove, and the bottom of the second movable frame is provided with a limiting block in contact with the limiting groove. A protrusion is arranged on one side of the limiting block, the upper side and the lower side of the protrusion are provided with an inclined face and a plane respectively, the inclined face and the plane make contact with the fixed clamp, the telescopic air cylinder drives the movable clamp to slide, a reset spring is arranged between the movable clamp and the second movable frame, a transverse block is arranged on the fixed frame, and the end of the transverse block penetrates through the limiting groove to make contact with the protrusion. A recycling frame is arranged between the fixing frame and the folder gluer conveying belt. The paper box rejecting device has the beneficial effects that the efficiency of rejecting defective paper boxes on the box pasting machine is improved, and meanwhile the labor intensity of workers is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of folder-gluing machines, in particular to a defective product rejecting device for folder-gluing machines. Background Art

[0002] In the milk box printing industry, the application of the box gluing machine is the last process of the box processing. It is to fold the printed and die-cut cardboard into shape and glue the edges. The machine box gluing replaces the manual box gluing method, reducing labor costs and improving efficiency. The parts of the box gluing machine are divided into paper feeding part, pre-folding part, bottom hook, forming part, and box pressing part. The box gluing machine is divided into straight gluing machine, bottom hook box gluing machine, etc. according to its function.

[0003] When packaging box products are formed, glued and glued, it is easy to have insufficient glue or leakage. Products with insufficient glue or no glue will naturally become defective products. In the prior art, workers are generally required to manually remove the defective products, which reduces the efficiency of removing defective products to a certain extent. Summary of the invention

[0004] The purpose of the present invention is to provide a defective product removal device for a box-gluing machine, so as to solve the problem of low efficiency in removing defective paper boxes on the box-gluing machine, improve the efficiency in removing defective paper boxes on the box-gluing machine, and reduce the labor intensity of workers.

[0005] In order to achieve the above-mentioned purpose, the invention is implemented through the following technical solutions:

[0006] The cam is an axially movable frame, and the cam is a movable frame, and the movable frame is slidably connected to the cam. The cam is provided with a fixed frame, and a second movable frame is slidably connected to the cam. The second movable frame is provided with a fixed clamp and a movable clamp is slidably connected to the cam. The second movable frame is provided with an inclined slot, and guide columns are respectively provided at both ends of the movable clamp for sliding contact with the inclined slot. The fixed clamp is provided with a limiting slot, and a limiting block is provided at the bottom of the second movable frame for contacting with the limiting slot. A protrusion is provided on one side of the limiting block, and an inclined surface and a plane contacting with the fixed clamp are respectively provided on the upper and lower sides of the protrusion. The cam also includes a telescopic cylinder for driving the movable clamp to slide, a reset spring is provided between the movable clamp and the second movable frame, a transverse block is provided on the fixed frame, and an end of the transverse block passes through the limiting slot and contacts with the protrusion, and a recovery frame is provided between the fixed frame and the conveyor belt of the box gluing machine.

[0007] Furthermore, the telescopic cylinder adopts a high-speed cylinder, a push block is provided at the movable end of the telescopic cylinder, and a vertical groove slidably connected to the push block is provided on the second movable frame.

[0008] Furthermore, the two ends of the first movable frame are respectively provided with a plurality of first positioning pins and a second positioning pin in contact with the second movable frame, the fixed frame is provided with an adjustment block, the adjustment block is provided with a plurality of third positioning pins, and the first movable frame is provided with a notch in sliding contact with the third positioning pins.

[0009] Furthermore, the adjustment block is slidably arranged on a fixing frame, a sliding groove is arranged on the fixing frame, and a sliding block is arranged on one side of the adjustment block and is in sliding contact with the sliding groove.

[0010] Furthermore, the slider is rotatably connected to a rotating shaft, a driving wheel and a limiting wheel are respectively provided on the rotating shaft, a convex plate is provided on the fixed frame, an arc-shaped convex block is provided on one side of the limiting wheel, a plurality of limiting grooves contacting the arc-shaped convex block are provided on the convex plate, a rack is provided at the bottom of the convex plate, and a convex tooth meshing with the rack is provided on one side of the driving wheel.

[0011] Furthermore, a driving motor is provided on the sliding block, and a movable end of the driving motor is connected to the rotating shaft.

[0012] Furthermore, blocks are respectively provided on both sides of the second movable frame, a guide rod is provided on the block, a guide block slidably connected to the guide rod is provided on one side of the guide column, and the reset spring is arranged between the guide block and the block.

[0013] Furthermore, one side of the fixing frame and the movable clamp is respectively provided with a clamping portion, and one side of the clamping portion is provided with a conical surface.

[0014] Furthermore, the fixed frame and the first movable frame are respectively provided with rollers in contact with the first movable frame and the second movable frame.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. When the visual inspection device detects that there are cartons on the conveyor belt of the box gluer that have not been glued or the glue amount is too little or too much, a signal is provided to the solenoid valve that controls the movement of the telescopic cylinder to drive the movable end of the telescopic cylinder to extend, and through the cooperation among the telescopic cylinder, the movable clamp, the fixed frame, the second movable frame, the reset spring, and the first movable frame, the movable clamp and the fixed clamp are driven to move to the upper and lower sides of the defective carton respectively, and then the movable end of the telescopic cylinder is further extended, and through the cooperation among the reset spring, the movable clamp, the second movable frame, the guide column, and the inclined groove, the defective carton is clamped between the movable clamp and the fixed clamp, and at the same time, through the cooperation among the protrusion, the inclined surface, the fixed clamp, the limit block, the limit groove, and the plane, the movable clamp is restricted from moving relative to the fixed clamp, thereby clamping the defective carton;

[0017] After the rejecting mechanism clamps the defective carton, since the movable clamp is fixed on the second movable frame, when the solenoid valve controls the telescopic cylinder to retract its movable end, the movable clamp, the second movable frame, the first movable frame and the fixed frame cooperate with each other, so that the movable clamp and the fixed clamp drive the defective carton to move to the upper part of the recycling frame. At the same time, the cooperation between the transverse block, the limit groove, the protrusion, the limit block and the plane is released to release the clamping cooperation between the limit block and the limit groove, so that the limit block can move relative to the fixed clamp, and then the rebound force generated by the compression of the reset spring will push the first movable frame to move relative to the fixed frame, thereby automatically releasing the rejection device from the defective carton. The defective carton products are clamped, and under the weight of the defective carton products themselves, the defective carton products slide off the movable clamp and the fixed clamp and fall into the recycling frame, thereby realizing the rejection of the defective carton products, and no manual rejection is required, which greatly improves the efficiency of rejecting the defective carton products on the box gluing machine and reduces the labor intensity of workers; in addition, the rejection mechanism does not need to additionally set up a power mechanism to drive the movable clamp to move relative to the fixed clamp, the first movable frame to move relative to the fixed frame, and the second movable frame to move relative to the first movable frame, so as to realize the clamping and unloading of the defective carton products by the rejection mechanism, thereby reducing the space required for installing the power mechanism and the manufacturing cost;

[0018] 2. When it is necessary to remove defective cartons, the movable clamp is driven to move horizontally through the cooperation between the telescopic cylinder, the push block and the movable clamp, and the first positioning pin and the second positioning pin are respectively in contact with the two ends of the first movable frame to limit the range of movement of the second movable frame on the first movable frame, and the third positioning pin is in sliding contact with the notch provided on the first movable frame to limit the range of movement of the first movable frame on the fixed frame, thereby accurately controlling the positions of the movable clamp and the fixed clamp for clamping defective cartons, so that the rejection mechanism can stably clamp the corresponding defective cartons, thereby improving the efficiency of removing defective cartons from the box gluer; in addition, since the movable clamp itself can slide vertically relative to the movable end of the telescopic cylinder, it cooperates with the reset spring, the limit block, the limit groove and the transverse block to realize the clamping and unloading of the defective cartons, thereby reducing the space required for installing the power mechanism and the manufacturing cost;

[0019] 3. When the position of the third positioning pin needs to be changed, the restriction on the sliding of the slider on the fixed frame is released through the cooperation among the driving motor, the rotating shaft, the slider, the driving wheel, the limiting wheel, the arc-shaped convex block and the arc-shaped groove. Then, through the cooperation among the driving wheel, the convex tooth and the rack, the driving wheel moves on the rack, driving the slider to slide on the fixed frame, thereby driving the adjustment block to slide on the fixed frame, thereby changing the position of the third positioning pin on the fixed frame, adjusting the position of the movable clamp and the fixed clamp to hold the defective paper boxes, adapting to the needs of paper boxes of different widths, and improving the effect of removing defective paper boxes from the box gluing machine;

[0020] Each time the driving slider slides on the fixed frame, the arc-shaped protrusion provided on one side of the limiting wheel re-enters the arc-shaped groove. The resistance generated after the two contact will limit the sliding of the slider relative to the fixed frame, thereby preventing external force from accidentally driving the slider to move and changing the position of the third positioning pin, thereby ensuring that the movable clamp and the fixed clamp stably clamp the defective carton products, thereby improving the effect of removing defective carton products from the box gluing machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Attached Figure 1 It is a structural schematic diagram of the rejecting mechanism of the present invention.

[0022] Attached Figure 2 It is a structural schematic diagram of the second movable frame of the present invention.

[0023] Attached Figure 3 It is a schematic diagram of the structure of the cooperation between the fixed clamp and the movable clamp of the present invention.

[0024] Attached Figure 4 The present invention is attached Figure 3 A partial enlarged view of area A in the middle.

[0025] Attached Figure 5 It is a structural schematic diagram of the return spring of the present invention.

[0026] Attached Figure 6 It is a structural schematic diagram of the driving wheel of the present invention.

[0027] Attached Figure 7 It is a structural schematic diagram of the limiting wheel of the present invention.

[0028] Numbers shown in the accompanying drawings:

[0029] 1. Conveyor belt of folder gluer; 2. Visual inspection mechanism; 3. Rejection mechanism; 4. Fixed frame; 5. First movable frame; 6. Second movable frame; 7. Fixed clamp; 8. Movable clamp; 9. Inclined slot; 10. Guide column; 11. Limiting slot; 12. Limiting block; 13. Protrusion; 14. Inclined surface; 15. Flat surface; 16. Telescopic cylinder; 17. Reset spring; 18. Transverse block; 19. Recovery frame;

[0030] 20. Push block; 21. Vertical slot; 22. First positioning pin; 23. Second positioning pin; 24. Adjustment block; 25. Third positioning pin; 26. Notch; 27. Slideway; 28. Slider; 29. ​​Rotating shaft; 30. Driving wheel; 31. Limiting wheel; 32. Convex plate; 33. Arc-shaped convex block; 34. Arc-shaped slot; 35. Rack; 36. Convex tooth; 37. Driving motor;

[0031] 38. Stop block; 39. Guide rod; 40. Guide block; 41. Clamping portion; 42. Conical surface; 43. Roller. DETAILED DESCRIPTION

[0032] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms fall within the scope limited by the application equally.

[0033] The present invention provides a defective product rejection device for a folder-gluing machine, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, it includes a visual inspection mechanism 2 and a rejection mechanism 3 arranged at the end of the box-gluing machine conveyor belt 1. When the visual inspection device detects that there are cartons on the box-gluing machine conveyor belt 1 that have not been glued or the amount of glue applied is too little or too much, a signal is provided to the rejection mechanism 3, and the defective products on the box-gluing machine conveyor belt 1 are rejected by the rejection mechanism 3, and no manual rejection is required, which greatly improves the efficiency of rejecting defective cartons on the box-gluing machine and reduces the labor intensity of workers. The specific visual inspection mechanism 2 can refer to the model CSZN-QJX visual inspection system;

[0034] The rejecting mechanism 3 includes a fixed frame 4, a first movable frame 5 slidably arranged on the fixed frame 4, a second movable frame 6 is slidably connected to the first movable frame 5, a fixed clamp 7 is arranged on the second movable frame 6, and a movable clamp 8 is slidably connected to the first movable frame 5. The first movable frame 5 slides on the fixed frame 4, and the second movable frame 6 slides on the first movable frame 5, so as to drive the fixed clamp 7 and the movable clamp 8 to move below and above the defective carton products, and at the same time drive the defective carton products clamped between the fixed clamp 7 and the movable clamp 8 to leave the conveyor belt, so that they move to the top of the recycling frame 19;

[0035] The second movable frame 6 is provided with an inclined groove 9, and both ends of the movable clamp 8 are respectively provided with guide posts 10 that are in sliding contact with the inclined groove 9, which guide the movement of the movable clamp 8 on the second movable frame 6, ensuring that the fixed clamp 7 and the movable clamp 8 can smoothly clamp the defective carton products;

[0036] The fixing clamp 7 is provided with a limiting groove 11, and the bottom of the movable frame is provided with a limiting block 12 in contact with the limiting groove 11, and a protrusion 13 is provided on one side of the limiting block 12, and the upper and lower sides of the protrusion 13 are respectively provided with an inclined surface 14 and a plane 15 in contact with the fixing clamp 7, and the inclined surface 14 provided on the lower side of the protrusion 13 contacts the fixing clamp 7. The component force generated after the contact drives the limiting block 12 to bend and deform, so that the limiting block 12 enters the limiting groove 11 until the plane 15 provided on the upper side of the protrusion 13 is flush with the limiting groove 11, and the limiting block 12 restores its original state to drive the protrusion 13 to enter the limiting groove 11, so that the plane 15 provided on the upper side of the limiting block 12 contacts the fixing clamp 7, and the generated resistance will limit the relative movement of the movable clamp 8 to the fixing clamp 7, thereby achieving the clamping of the defective paper box;

[0037] It also includes a telescopic cylinder 16 for driving the movable clamp 8 to slide, providing power for the movable clamp 8 to move relative to the fixed clamp 7, the first movable frame 5 to move relative to the fixed frame 4, and the second movable frame 6 to move relative to the first movable frame 5. There is no need to set up an additional power mechanism for separate driving, so as to realize the clamping and unloading of the defective carton products by the rejection mechanism 3, reducing the space required for installing the power mechanism and the manufacturing cost; a reset spring 17 is provided between the movable clamp 8 and the second movable frame 6, and a transverse block 18 is provided on the fixed frame 4. The end of the transverse block 18 passes through the limiting groove 11 and contacts with the protrusion 13. A recovery frame 19 is provided between the fixed frame 4 and the conveyor belt 1 of the box gluing machine. When the movable clamp 8 and the fixed clamp 7 drive the defective carton to move to the upper part of the recovery frame 19, the end of the transverse block 18 passes through the limiting groove 11 The limit block 12 contacts with the projection 13, and the force generated by the contact between the two causes the limit block 12 to bend and deform until the projection 13 slides out of the limit groove 11, so that the plane 15 provided on the upper side of the projection 13 is no longer in contact with the fixed clip 7, thereby releasing the clamping fit between the limit block 12 and the limit groove 11, so that the limit block 12 can move relative to the fixed clip 7, and then the rebound force generated by the compression of the reset spring 17 will push the first movable frame 5 to move relative to the fixed frame 4, thereby automatically releasing the clamping of the carton waste by the rejection device, and under the gravity of the carton waste itself, the carton waste slides off the movable clamp 8 and the fixed clamp 7 and falls into the recycling frame 19, thereby realizing the rejection of the carton waste, and no manual rejection is required, which greatly improves the efficiency of rejecting the carton waste on the box gluing machine and reduces the labor intensity of workers.

[0038] Preferably, Figure 2 and Figure 3As shown, the telescopic cylinder 16 adopts a high-speed cylinder, and specific reference may be made to the high-speed cylinder of RHC80-1000, so as to improve the efficiency of removing defective cartons. The movable end of the telescopic cylinder 16 is provided with a push block 20, and the first movable frame 5 is provided with a vertical groove 21 slidably connected to the push block 20, so that when the telescopic cylinder 16 drives the movable clamp 8 to move horizontally, the movable clamp 8 itself can slide vertically relative to the movable end of the telescopic cylinder 16, and cooperate with the reset spring 17, the limit block 12, the limit groove 11, and the horizontal block 18 to realize the clamping and unloading of defective cartons, thereby reducing the space required for installing the power mechanism and the manufacturing cost.

[0039] Preferably, Figure 2 and Figure 3 As shown, the two ends of the first movable frame 5 are respectively provided with a plurality of first positioning pins 22 and a second positioning pin 23 in contact with the second movable frame 6, so as to limit the movable range of the second movable frame 6 on the first movable frame 5; the fixed frame 4 is provided with an adjusting block 24, and the adjusting block 24 is provided with a plurality of third positioning pins 25; the first movable frame 5 is provided with a slot 26 in sliding contact with the third positioning pin 25, so as to limit the movable range of the first movable frame 5 on the fixed frame 4, thereby accurately controlling the position of the movable clamp 8 and the fixed clamp 7 for clamping defective carton products, so that the rejection mechanism 3 can stably clamp the corresponding defective carton products, thereby improving the efficiency of rejecting defective carton products of the box gluing machine.

[0040] Preferably, Figure 2 and Figure 3 As shown, the adjustment block 24 is slidably set on the fixed frame 4, changing the position of the third positioning pin 25 on the fixed frame 4, thereby adjusting the position of the movable clamp 8 and the fixed clamp 7 for clamping defective paper boxes, thereby adapting to the needs of paper boxes of different widths and improving the effect of removing defective paper boxes from the box gluing machine; a slide groove 27 is provided on the fixed frame 4, and a slider 28 is provided on one side of the adjustment block 24, which is in sliding contact with the slide groove 27, and plays a guiding role for the fixed frame 4 to slide on the slider 28.

[0041] Preferably, Figure 3 , Figure 6 and Figure 7As shown, the slider 28 is rotatably connected with a rotating shaft 29, and a driving wheel 30 and a limiting wheel 31 are respectively provided on the rotating shaft 29. Specifically, the driving wheel 30 and the limiting wheel 31 are connected to the rotating shaft 29 by a key, so that the rotating shaft 29 drives the limiting wheel 31 and the driving wheel 30 to rotate together, and the fixing frame 4 is provided with a convex plate 32, and an arc-shaped convex block 33 is provided on one side of the limiting wheel 31, and a plurality of arc-shaped grooves 34 contacting the arc-shaped convex block 33 are provided on the convex plate 32, and a rack 35 is provided at the bottom of the convex plate 32, and a convex tooth 36 meshing with the rack 35 is provided on one side of the driving wheel 30. The rotating shaft 29 rotates on the slider 28, and at the same time, the driving wheel 30 and the limiting wheel 31 connected by the key on the rotating shaft 29 are driven to rotate together, so that the arc-shaped convex block 33 provided on one side of the limiting wheel 31 slides out from the arc-shaped groove 34, thereby releasing the restriction on the sliding of the slider 28 on the fixing frame 4. The convex teeth 36 provided are meshed with the rack 35, further driving the driving wheel 30 to rotate with the rotating shaft 29, so that the driving wheel 30 moves on the rack 35, driving the slider 28 to slide on the fixed frame 4, thereby driving the adjusting block 24 to slide on the fixed frame 4, and then changing the position of the third positioning pin 25 on the fixed frame 4, adjusting the position of the movable clamp 8 and the fixed clamp 7 to clamp the defective paper box products, adapting to the needs of paper boxes of different widths, and improving the effect of rejecting the defective paper boxes of the box gluing machine; each time the sliding block 28 is driven to slide on the fixed frame 4, the arc-shaped protrusion 33 provided on one side of the limiting wheel 31 re-enters the arc-shaped groove 34, and the resistance generated after the two contact will limit the sliding block 28 from sliding relative to the fixed frame 4, avoiding external force from accidentally driving the sliding block 28 to move, changing the position of the third positioning pin 25, and then ensuring that the movable clamp 8 and the fixed clamp 7 stably clamp the defective paper box products, and improving the effect of rejecting the defective paper box products of the box gluing machine.

[0042] Preferably, Figure 3 and Figure 7 As shown, the slider 28 is provided with a driving motor 37 , and the movable end of the driving motor 37 is connected to the rotating shaft 29 to provide power for the slider 28 to slide on the fixing frame 4 .

[0043] Preferably, Figure 5 As shown, blocks 38 are respectively provided on both sides of the second movable frame 6, and a guide rod 39 is provided on the block 38. A guide block 40 slidably connected to the guide rod 39 is provided on one side of the guide column 10. The sliding connection between the guide rod 39 and the guide block 40 guides the sliding of the movable clamp 8 on the second movable frame 6, thereby preventing the movable clamp 8 from accidentally rotating on the second movable frame 6 under the action of external force, thereby affecting the clamping of defective carton products. The reset spring 17 is arranged between the guide block 40 and the block 38, thereby guiding the reset spring 17, thereby preventing the reset spring 17 from sliding out of the guide block 40, thereby improving the stability of the overall structure.

[0044] Preferably, Figure 6 As shown, a clamping portion 41 is provided on one side of the fixed frame 4 and the movable clamp 8 respectively, and a conical surface 42 is provided on one side of the clamping portion 41, so that the fixed clamp 7 and the movable clamp 8 can smoothly scoop up the defective cartons, thereby improving the efficiency of removing the defective cartons on the box gluing machine.

[0045] Preferably, Figure 2 and Figure 3 As shown, the fixed frame 4 and the first movable frame 5 are respectively provided with rollers 43 in contact with the first movable frame 5 and the second movable frame 6, thereby reducing the friction of the first movable frame 5 on the fixed frame 4 and the second movable frame 6 on the first movable frame 5, so that the rejection mechanism 3 can operate more smoothly and improve the efficiency of the rejection mechanism 3 in rejecting defective cartons on the box gluing machine.

[0046] Example 1

[0047] The present invention provides a defective product rejection device for a folder-gluing machine, such as Figure 1-4 As shown, when the visual inspection device detects that there are cartons on the conveyor belt 1 of the box gluer that have not been glued or the amount of glue applied is too little or too much, a signal is provided to the solenoid valve controlling the movement of the telescopic cylinder 16 to drive the movable end of the telescopic cylinder 16 to extend, and a force is applied to the movable clamp 8 through the telescopic cylinder 16 to push the movable clamp 8 to move relative to the fixed frame 4. Since a return spring 17 is provided between the movable clamp 8 and the second movable frame 6, the resistance generated by the compression of the return spring 17 prevents the movable clamp 8 from sliding directly on the second movable frame 6. The thrust generated first drives the second movable frame 6 to slide on the first movable frame 5 until the second movable frame 6 moves to the end of the first movable frame 5, and the second movable frame 6 contacts the first movable frame 5 to drive the first movable frame 5 to slide on the fixed frame 4 until the first movable frame 5 moves to the end of the fixed frame 4, which will limit the first movable frame 5 from continuing to move on the fixed frame 4; at this time, the movable clamp 8 The movable clamp 8 is moved to the upper and lower sides of the defective paper box, and then the movable end of the telescopic cylinder 16 is further extended. The thrust generated will overcome the resistance generated by the compression of the return spring 17, so that the movable clamp 8 moves relative to the second movable frame 6, and is slidably arranged in the inclined groove 9 through the guide column 10, which guides the movement of the movable clamp 8 until the defective paper box is clamped between the movable clamp 8 and the fixed clamp 7. At the same time, the inclined surface 14 provided on the lower side of the protrusion 13 contacts the fixed clamp 7. The component force generated after the contact drives the limit block 12 to bend and deform, so that the limit block 12 enters the limit groove 11 until the plane 15 provided on the upper side of the protrusion 13 is flush with the limit groove 11. The limit block 12 restores its original state and drives the protrusion 13 to enter the limit groove 11, so that the plane 15 provided on the upper side of the limit block 12 contacts the fixed clamp 7. The resistance generated will limit the movement of the movable clamp 8 relative to the fixed clamp 7, thereby realizing the clamping of the defective paper box.

[0048] After the rejecting mechanism 3 clamps the defective carton, due to the clamping cooperation between the limit block 12 and the limit groove 11, the relative movement of the movable clamp 8 and the fixed clamp 7 is limited, and the movable clamp 8 is fixed on the second movable frame 6. When the solenoid valve controls the telescopic cylinder 16 to retract its movable end, a force will be applied to the movable clamp 8, and the second movable frame 6 will be driven to slide on the first movable frame 5. When the second movable frame 6 moves to the end of the first movable frame 5, the force generated after the first movable frame 5 and the second movable frame 6 contact will drive the first movable frame 5 to slide on the fixed frame 4 until the first movable frame 5 moves to the end of the fixed frame 4. At this time, the movable clamp 8 and the fixed clamp 7 drive the defective carton to move to the upper part of the recycling frame 19, and at the same time, the end of the transverse block 18 passes through the limit groove 11 and contacts the protrusion 13. The force generated after the contact between the two causes the limit block 12 to bend and deform until the protrusion 13 slides out of the limit groove 11, so that the plane 15 provided on the upper side of the protrusion 13 is no longer in contact with the plane 15 The fixed clamp 7 contacts with each other, thereby releasing the clamping fit between the limit block 12 and the limit groove 11, so that the limit block 12 can move relative to the fixed clamp 7, and then the resilience generated by the compression of the reset spring 17 will push the movable clamp 8 to move relative to the fixed clamp 7, thereby automatically releasing the clamping of the carton waste by the rejection device, and under the gravity of the carton waste itself, the carton waste slides off the movable clamp 8 and the fixed clamp 7 and falls into the recycling frame 19, thereby realizing the rejection of the carton waste, and no manual rejection is required, which greatly improves the efficiency of rejecting the carton waste on the box gluing machine and reduces the labor intensity of workers; in addition, the rejection mechanism 3 does not need to additionally set up a power mechanism to drive the movable clamp 8 to move relative to the fixed clamp 7, the first movable frame 5 to move relative to the fixed frame 4, and the second movable frame 6 to move relative to the first movable frame 5, so as to realize the clamping and unloading of the carton waste by the rejection mechanism 3, thereby reducing the space required for installing the power mechanism and the manufacturing cost.

[0049] Example 2

[0050] On the basis of Example 1, Figure 2 and Figure 3As shown, when it is necessary to remove defective carton products, the movable end of the telescopic cylinder 16 is extended and retracted, so that the two sides of the push block 20 are respectively in contact with the movable clamp 8, thereby driving the movable clamp 8 to move horizontally, and the first positioning pin 22 and the second positioning pin 23 are respectively in contact with the two ends of the first movable frame 5, thereby limiting the range of movement of the second movable frame 6 on the first movable frame 5, and the third positioning pin 25 is in sliding contact with the notch 26 provided on the first movable frame 5, thereby limiting the range of movement of the first movable frame 5 on the fixed frame 4, thereby accurately controlling the positions of the movable clamp 8 and the fixed clamp 7 for clamping the defective carton products, so that the rejection mechanism 3 can stably clamp the corresponding defective carton products, thereby improving the efficiency of rejecting the defective carton products of the box gluing machine; in addition, since the movable clamp 8 itself can slide vertically relative to the movable end of the telescopic cylinder 16, in cooperation with the reset spring 17, the limit block 12, the limit groove 11, and the transverse block 18, the defective carton products can be clamped and unloaded, thereby reducing the space required for installing the power mechanism and the manufacturing cost.

[0051] Example 3

[0052] On the basis of Example 2, Figure 3 , Figure 6 and Figure 7 As shown, when the position of the third positioning pin 25 needs to be changed, the rotating shaft 29 is driven by the driving motor 37 to rotate on the slider 28, and at the same time, the driving wheel 30 and the limiting wheel 31 connected by the key on the rotating shaft 29 are driven to rotate together, so that the arc-shaped protrusion 33 provided on one side of the limiting wheel 31 slides out from the arc-shaped groove 34 provided on the protruding plate 32, and the restriction on the sliding of the slider 28 on the fixing frame 4 is released. Then, the convex tooth 36 provided on one side of the driving wheel 30 meshes with the rack 35, and further drives the driving wheel 30 to rotate with the rotating shaft 29, so that the driving wheel 30 moves on the rack 35, drives the slider 28 to slide on the fixing frame 4, and thus drives the adjusting block 24 to slide on the fixing frame 4, thereby changing the position of the third positioning pin 25 on the fixing frame 4, adjusting the position of the movable clamp 8 and the fixed clamp 7 for clamping the defective carton, adapting to the needs of cartons of different widths, and improving the effect of removing defective carton products from the box gluing machine;

[0053] Each time the slider 28 is driven to slide on the fixed frame 4, the arc-shaped protrusion 33 provided on one side of the limiting wheel 31 re-enters the arc-shaped groove 34. The resistance generated after the two contact will limit the sliding of the slider 28 relative to the fixed frame 4, thereby preventing external force from accidentally driving the slider 28 to move and changing the position of the third positioning pin 25, thereby ensuring that the movable clamp 8 and the fixed clamp 7 stably clamp the defective carton products, thereby improving the effect of removing defective carton products from the box gluing machine.

Claims

1. A defective product rejection device for a folder-gluing machine, comprising a visual detection mechanism (2) and a rejection mechanism (3) arranged at the end of a conveyor belt (1) of the folder-gluing machine, characterized in that: The rejecting mechanism (3) comprises a fixed frame (4), a first movable frame (5) slidably arranged on the fixed frame (4), a second movable frame (6) slidably connected to the first movable frame (5), a fixed clamp (7) and a movable clamp (8) slidably connected to the second movable frame (6), an inclined groove (9) is provided on the second movable frame (6), guide columns (10) slidably contacting the inclined groove (9) are respectively provided at both ends of the movable clamp (8), a limiting groove (11) is provided on the fixed clamp (7), and a limiting block (10) contacting the limiting groove (11) is provided at the bottom of the second movable frame (6). 12), a protrusion (13) is provided on one side of the limit block (12), an inclined surface (14) and a flat surface (15) are respectively provided on the upper and lower sides of the protrusion (13) for contacting the fixed clamp (7), and a telescopic cylinder (16) is also included for driving the movable clamp (8) to slide, a return spring (17) is provided between the movable clamp (8) and the second movable frame (6), a transverse block (18) is provided on the fixed frame (4), the end of the transverse block (18) passes through the limit groove (11) and contacts the protrusion (13), and a recovery frame (19) is provided between the fixed frame (4) and the conveyor belt (1) of the box gluing machine.

2. The defective product rejection device for a folder-gluing machine according to claim 1, characterized in that: The telescopic cylinder (16) is a high-speed cylinder. A push block (20) is provided at the movable end of the telescopic cylinder (16). The second movable frame (6) is provided with a vertical groove (21) slidably connected to the push block (20).

3. The defective product rejection device for a folder-gluing machine according to claim 1, characterized in that: A plurality of first positioning pins (22) and a second positioning pin (23) in contact with the second movable frame (6) are respectively provided at both ends of the first movable frame (5); an adjustment block (24) is provided on the fixed frame (4); a plurality of third positioning pins (25) are provided on the adjustment block (24); and a notch (26) in sliding contact with the third positioning pins (25) is provided on the first movable frame (5).

4. The defective product rejection device for a folder-gluing machine according to claim 3 is characterized in that: The adjusting block (24) is slidably arranged on the fixing frame (4), a sliding groove (27) is provided on the fixing frame (4), and a sliding block (28) is provided on one side of the adjusting block (24) for sliding contact with the sliding groove (27).

5. The defective product rejection device for a folder-gluing machine according to claim 4, characterized in that: The slider (28) is rotatably connected to a rotating shaft (29), and a driving wheel (30) and a limiting wheel (31) are respectively provided on the rotating shaft (29). The fixing frame (4) is provided with a convex plate (32), one side of the limiting wheel (31) is provided with an arc-shaped convex block (33), and the convex plate (32) is provided with a plurality of arc-shaped grooves (34) in contact with the arc-shaped convex block (33). A rack (35) is provided at the bottom of the convex plate (32), and one side of the driving wheel (30) is provided with a convex tooth (36) meshing with the rack (35).

6. The defective product rejection device for a folder-gluing machine according to claim 5, characterized in that: The slider (28) is provided with a driving motor (37), and the movable end of the driving motor (37) is connected to the rotating shaft (29).

7. The defective product rejection device for a folder-gluing machine according to claim 1, characterized in that: Blocks (38) are respectively provided on both sides of the second movable frame (6), a guide rod (39) is provided on the block (38), a guide block (40) slidably connected to the guide rod (39) is provided on one side of the guide column (10), and the return spring (17) is arranged between the guide block (40) and the block (38).

8. The defective product rejection device for a folder-gluing machine according to claim 1, characterized in that: A clamping portion (41) is provided on one side of the fixed frame (4) and the movable clamp (8), respectively, and a conical surface (42) is provided on one side of the clamping portion (41).

9. The defective product rejection device for a folder-gluing machine according to claim 1, characterized in that: The fixed frame (4) and the first movable frame (5) are respectively provided with rollers (43) which are in contact with the first movable frame (5) and the second movable frame (6).

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