A conveying type four-corner cutting mechanism

Abstract

The present invention belongs to the technical field of film coating, and specifically relates to a conveying type four-corner cutting mechanism, which includes a placement plate; conveying mechanisms are arranged on the opposite surfaces of a pair of the placement plates; a pair of first vertical slide rails are fixedly connected to the placement plate, and a first moving plate is slidably connected to the first vertical slide rails; a first fixing plate is fixedly connected to one side of the first moving plate, and a second fixing plate is fixedly connected to the other side; a first fixing block is fixedly connected to the placement plate, and a first cylinder is fixedly connected to the side wall of the first fixing plate, and the end of the piston rod of the first cylinder is fixedly connected to the first fixing block; a second fixing block is fixedly connected to the bottom end of the second moving plate, and a second cylinder is fixedly connected to the second fixing block, and the end of the piston rod of the second cylinder is fixedly connected to the side wall of the second fixing plate through a connecting block; to solve the problems of relatively low overall working efficiency of the traditional corner cutting mechanism, product detachment, and clamping damage to the surface coating film of the product box.

Description

Technical Field

[0001] The present invention belongs to the technical field of film wrapping, and specifically relates to a conveying type four-corner cutting mechanism. Background Art

[0002] For some products, such as electronic products, cosmetics, etc., after the products are packaged in boxes, it is necessary to wrap the boxes with plastic films to protect the outer surface of the product boxes. In the existing film wrapping process, a bag is first put on the product box, then the seal is initially cut, and then the four corners of the wrapped film bag are cut off by a four-corner cutting mechanism, thereby completing the wrapping process of the product box.

[0003] In the prior art, the four-corner cutting mechanism of a traditional corner cutting and film wrapping machine is a fixed mechanism. It is necessary for a handling manipulator to carry the product box to be cut into the four-corner cutting station. After placing it, the manipulator can only perform film arranging and corner cutting operations after leaving the station. After the corner cutting is completed, it is necessary for the manipulator to carry the product box with the four corners cut out of the station for the second time. The actions of using the manipulator to pick up and place are too cumbersome, reducing the overall working efficiency. At the same time, because the wrapping film on the surface of the product box is smooth, it is easy to cause the product to fall off, and the surface wrapping film of the product box may also be damaged by clamping due to excessive clamping force. Therefore, the present invention provides a conveying type four-corner cutting mechanism. Summary of the Invention

[0004] In order to make up for the deficiencies of the prior art and solve at least one technical problem proposed in the background art.

[0005] The technical solution adopted by the present invention to solve its technical problems is as follows: A conveying type four-corner cutting mechanism of the present invention includes a placement plate; conveying mechanisms are provided on the opposite surfaces of a pair of the placement plates; a pair of first vertical slide rails are fixedly connected to the placement plate, and a first moving plate is slidably connected to the first vertical slide rails; a first fixing plate is fixedly connected to one side of the first moving plate, and a second fixing plate is fixedly connected to the other side; a first fixing block is fixedly connected to the placement plate, and a first cylinder is fixedly connected to the side wall of the first fixing plate, and the end of the piston rod of the first cylinder is fixedly connected to the first fixing block; second moving plates are slidably connected to both the first fixing plate and the second fixing plate; a second fixing block is fixedly connected to the bottom end of the second moving plate, and a second cylinder is fixedly connected to the second fixing block, and the end of the piston rod of the second cylinder is fixedly connected to the side wall of the second fixing plate through a connecting block; a third moving plate is provided on the placement plate, and a pair of second vertical slide rails are fixedly connected to the third moving plate; a fourth moving plate is slidably connected to a pair of the second vertical slide rails, and a third fixing plate is fixedly connected to one side of the fourth moving plate, and a fourth fixing plate is fixedly connected to the other side; a positioning plate is fixedly connected to the tops of the third fixing plate and the fourth fixing plate; a third cylinder is fixedly connected to the side wall of the fourth fixing plate, and the end of the piston rod of the third cylinder is fixedly connected to the side wall of the third moving plate through a connecting block; lining plates are fixedly connected to the side walls of both the second moving plate and the positioning plate, and a pair of the lining plates are symmetrically arranged; cutting knife mechanisms are provided at the tops of both the second moving plate and the positioning plate; film arranging mechanisms are provided at the tops of both the fourth moving plate and the first moving plate;In the prior art, the four-corner cutting mechanism of the traditional corner-cutting film wrapping machine is a fixed mechanism. It is necessary for the handling manipulator to carry the product box to be cut into the four-corner cutting station. After placement, the manipulator can only perform the film arranging and corner cutting operations after leaving the station. After the corner cutting is completed, it is necessary for the manipulator to carry the product box with the four corners cut out of the station again. The operation of picking and placing with the manipulator is too cumbersome, reducing the overall work efficiency. At the same time, because the wrapping film on the surface of the product box is smooth, it is easy to cause the product to fall off, and the surface wrapping film of the product box may also be damaged by excessive clamping force. Therefore, when the present invention works, it adopts a flow-through conveying method. The wrapped product box directly flows into the space between the placement plates through the conveying mechanism in the previous process. Before flowing in, the piston rod of the third cylinder shortens at this time, so that the fourth fixing plate drives the fourth moving plate as a whole to move towards the conveying mechanism. Since there is a pair of placement plates, at this time, a pair of fourth moving plates and positioning plates move towards each other, so that the lining plate enters above the conveying mechanism, initially intercepting and fixing the product box entering the conveying mechanism. Then, the first cylinder extends, driving the first moving plate and the second moving plate to move towards the conveying mechanism, so that the lining plate on the second moving plate enters above the conveying mechanism. Then, the second cylinder is started, driving the second moving plate and the lining plate to slide horizontally, so that the lining plate on the second moving plate pushes the product box, and then the four lining plates clamp and fix the product box. After the film is arranged by the film arranging mechanism, it is cut by the cutting knife mechanism. Then, the lining plate is restored to its original position by the first cylinder, the second cylinder and the third cylinder. The product box with the four corners cut will flow out along the conveying mechanism, and at the same time, the product box wrapped with the film will flow in, repeating in a cycle. Through the flow-through conveying, it can be better connected with the previous wrapping process, avoiding the damage and falling off of the surface of the wrapping film. At the same time, by using the pushing and clamping fixation of the lining plate, the stable central placement of the product box can be ensured, facilitating the subsequent film arranging and corner cutting, improving the production efficiency of corner cutting, and further ensuring the quality of film corner cutting.

[0006] Preferably, the film arranging mechanism includes a sliding plate; placing blocks are fixedly connected to the first moving plates; sliding plates are vertically slidably connected to the placing blocks and the fourth moving plates; an adjusting plate is horizontally slidably connected to the sliding plates; a film arranging plate and a rotary cylinder are fixedly connected to the adjusting plate; a fourth cylinder is fixedly connected to the sliding plates, and the piston rod of the fourth cylinder is connected to the piston rod of the rotary cylinder through a connecting block; a fifth cylinder is fixedly connected to the second fixing plate, and the piston rod of the fifth cylinder is connected to the sliding plate on the first moving plate through a connecting block; a sixth cylinder is fixedly connected to the fourth fixing plate, and the piston rod of the sixth cylinder is connected to the sliding plate on the fourth moving plate through a connecting block; during operation, after the product box is clamped by the lining plate, the sliding plates are driven by the fifth cylinder and the sixth cylinder to vertically slide on the placing blocks, so that the end of the film arranging plate is attached to the side wall of the product box, and then the adjusting plate is driven by the fourth cylinder to horizontally move on the sliding plates, so that the whole film arranging plate moves to scrape the film, so that the redundant four-corner film can be scraped and pressed on the side wall of the lining plate, and then the cutting mechanism is used for cutting treatment.

[0007] Preferably, the cutting mechanism includes a pushing cylinder; L-shaped plates are fixedly connected to the second moving plate and the positioning plate; a pushing cylinder is fixedly connected to the side wall of the L-shaped plate; a hot cutting knife is arranged at the end of the piston rod of the pushing cylinder; during operation, after the four-corner film is scraped and pressed on the side wall of the lining plate by the film arranging plate, the pushing cylinder is started at this time, and the hot cutting knife is used to cut and heat-seal the four-corner film to complete the chamfering treatment.

[0008] Preferably, a pushing plate is fixedly connected to the end of the piston rod of the pushing cylinder; a U-shaped seat is fixedly connected to the side wall of the pushing plate; a cylinder is fixedly connected to the U-shaped seat; a rotating plate is rotatably connected to the cylinder, and the side wall of the rotating plate is arranged on the bottom end of the U-shaped seat through a pair of adjusting springs, and the pair of adjusting springs are symmetrically arranged about the cylinder; the hot cutting knife is fixedly connected to the side wall of the rotating plate; during operation, because the rotating plate will be slightly adjusted and rotated on the cylinder under the action of the adjusting springs, it can ensure that when the hot cutting knife cuts the redundant four-corner film, it can avoid the influence of uneven thickness or redundant impurities, resulting in incomplete fitting, affecting the overall movement and cutting of the hot cutting knife. It can make the hot cutting knife rotate slightly by using the action of the adjusting springs, and also avoid the problem of rigid collision and damage between the hot cutting knives caused by the influence of impurities.

[0009] Preferably, a waste adsorption groove is formed on the side wall of the lining plate; a reversed L-shaped plate is fixedly connected to the bottom opening of the waste adsorption groove, and a through cylinder is fixedly connected to the reversed L-shaped plate; a group of shielding plates are arranged at the opening of the waste adsorption groove, and a first through groove is formed on the shielding plate; a threaded hole is formed on the lining plate corresponding to the position of the first through groove, and a bolt is threadedly connected to the threaded hole; during operation, after the excess four-corner film impurities are cut off by the hot cutting knife, at this time, there is suction force in the waste adsorption groove. When the film arranging plate returns to its original position, the excess impurities will be adsorbed by the suction force of the waste adsorption groove, and then the impurities will be adsorbed through the connection between the reversed L-shaped plate and the waste adsorption groove, avoiding the impurities being located on the four-corner cutting mechanism after being cut off and affecting the operation of the workpiece. At the same time, by setting the shielding plate, it can move through the first through groove, thereby adjusting the length of the adsorption connection of the waste adsorption groove, and then being able to adapt to the cutting of product boxes with different heights, ensuring the adsorption force. At the same time, the through cylinder can be used to manually take out the impurities, which is convenient and fast.

[0010] Preferably, air blowing holes are formed on the side wall of the lining plate; a rubber strip is fixedly connected to the side wall of the lining plate; during operation, when the lining plates are clamped and closed, the air blowing through the air blowing holes can prevent the four-corner film from being folded or unfolded, ensuring the pushing of the film arranging plate. The setting of the rubber strip can facilitate the cutting of the four-corner film by the hot cutting knife.

[0011] Preferably, the top view of the film arranging plate is L-shaped; a group of through holes are formed on the side wall of the film arranging plate; during operation, the top view of the film arranging plate is L-shaped, which can facilitate extrusion using the turning point. At the same time, a group of through holes are provided, which can prevent the cut four-corner film from adsorbing on the film arranging plate, facilitating ventilation, and then facilitating the adsorption of the cut four-corner film by the waste adsorption groove.

[0012] Preferably, a first horizontal slide rail is fixedly connected to the placing plate, and the third moving plate is slidably connected to the first horizontal slide rail; a first servo motor is fixedly connected to the placing plate, and a first lead screw is provided at the output end of the first servo motor, and the first lead screw is connected to the third moving plate through a lead screw-nut pair; during operation, by driving the first lead screw to rotate by the first servo motor, the movement of the third moving plate can be driven, thereby adjusting the distance between a pair of lining plates on the placing plate, facilitating the adaptation to product boxes with different lengths.

[0013] Preferably, a pair of adjusting blocks are fixedly connected to the bottom ends of a pair of the placing plates; a second lead screw is connected between the adjusting blocks through a lead screw-nut pair, and the second lead screw is rotated by a second servo motor; a third vertical slide rail is provided at the bottom ends of a pair of the placing plates, and the placing plate is slidably connected to the third vertical slide rail; during operation, by driving a pair of the placing plates to move towards or away from each other by the second servo motor, the distance between a pair of the placing plates can be adjusted, thereby facilitating product boxes with different widths.

[0014] Preferably, the conveying mechanism includes a second fixing plate and a fixing frame; a fifth fixing plate and a fixing frame are fixedly connected to the side wall of the placing plate, a support frame is provided between the fifth fixing plate and the fixing frame, and driving wheels are provided at both ends of the support frame and on the fifth fixing plate; a conveyor belt is used for driving between a set of driving wheels; a motor is fixedly connected to the fifth fixing plate, and the driving wheels are rotated by the motor; a set of seventh cylinders are fixedly connected to the side wall of the support frame, and a lifting plate is fixedly connected to the piston rod of the seventh cylinder; during operation, the motor can drive the conveyor belt to move, and at the same time, a set of seventh cylinders drive the lifting plate to lift, which can facilitate the placement and flow of the product box.

[0015] The beneficial effects of the present invention are as follows:

[0016] 1. For the conveying and four-corner cutting mechanism of the present invention, by using the first cylinder, the second cylinder and the third cylinder to restore the lining plate to its original position, the product box with the four-corner film cut will flow out along the conveying mechanism, and at the same time, the product box with the film wrapped will flow in, and this process will repeat. Through the flow-type conveying, it can be better connected with the previous wrapping process, avoiding the damage and falling off of the surface of the wrapping film. At the same time, by using the pushing and clamping fixation of the lining plate, the stable central placement of the product box can be ensured, which is convenient for subsequent film alignment and corner cutting, improving the production efficiency of corner cutting and further ensuring the quality of film corner cutting.

[0017] 2. For the conveying and four-corner cutting mechanism of the present invention, since the waste adsorption groove has suction force, when the film alignment plate returns to its original position, the excess impurities will be adsorbed by the suction force of the waste adsorption groove, and then the impurities will be adsorbed through the connection between the inverted L-shaped plate and the waste adsorption groove, avoiding the impurities remaining on the four-corner cutting mechanism after being cut and affecting the operation of the workpiece. At the same time, by using the setting of the baffle plate, it can move through the first through groove, thereby adjusting the length of the adsorption connection of the waste adsorption groove, and then being able to adapt to the cutting of product boxes of different heights, ensuring the adsorption force. At the same time, by using the through cylinder, the impurities can be taken out manually, which is convenient and fast. Description of the Drawings

[0018] The present invention will be further described below with reference to the drawings.

[0019] Figure 1 is the perspective view of the present invention;

[0020] Figure 2 is the bottom view of the present invention;

[0021] Figure 3 is the partial cross-sectional view of the present invention;

[0022] Figure 4 is the partial schematic view of the present invention;

[0023] Figure 5 is the partial cross-sectional view of the placing plate;

[0024] Figure 6 is a partial schematic view of the placement plate;

[0025] Figure 7 is an exploded view of the cutting knife mechanism;

[0026] Figure 8 is a three-dimensional view of the film arranging plate;

[0027] Figure 9 is an exploded view of the lining plate;

[0028] In the figure: 1. Placement plate; 11. First vertical slide rail; 12. First moving plate; 13. First fixed plate; 14. Second fixed plate; 15. First fixed block; 16. First cylinder; 17. Second moving plate; 18. Second fixed block; 19. Second cylinder; 2. Third moving plate; 21. Second vertical slide rail; 22. Fourth moving plate; 23. Third fixed plate; 24. Fourth fixed plate; 25. Positioning plate; 26. Third cylinder; 27. Lining plate; 3. Cutting knife mechanism; 31. L-shaped plate; 32. Pushing cylinder; 33. Pushing plate; 34. U-shaped seat; 35. Cylinder; 36. Rotating plate; 37. Hot cutting knife; 38. Adjusting spring; 4. Film arranging mechanism; 41. Placing block; 42. Sliding plate; 43. Adjusting plate; 44. Film arranging plate; 45. Rotary cylinder; 46. Fourth cylinder; 47. Fifth cylinder; 48. Sixth cylinder; 5. Waste adsorption groove; 51. Inverted L-shaped plate; 52. Through cylinder; 53. Baffle plate; 54. First through groove; 55. Threaded hole; 56. Air blowing hole; 57. Through hole; 58. Rubber strip; 6. First horizontal slide rail; 61. First servo motor; 62. First lead screw; 63. Adjusting block; 64. Second lead screw; 65. Second servo motor; 66. Third vertical slide rail; 7. Conveying mechanism; 71. Transmission wheel; 72. Motor; 73. Fifth fixed plate; 74. Fixed frame; 75. Support frame; 76. Seventh cylinder; 77. Lifting plate; 79. Conveyor belt. Detailed implementation manners

[0029] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with the detailed implementation manners.

[0030] Example 1, as Figures 1 to 9As shown in the figure, a conveying type four-corner cutting mechanism according to an embodiment of the present invention includes a placing plate 1; conveying mechanisms 7 are provided on the opposite surfaces of a pair of the placing plates 1; a pair of first vertical slide rails 11 are fixedly connected to the placing plate 1, and a first moving plate 12 is slidably connected to the first vertical slide rails 11; a first fixing plate 13 is fixedly connected to one side of the first moving plate 12, and a second fixing plate 14 is fixedly connected to the other side; a first fixing block 15 is fixedly connected to the placing plate 1, and a first cylinder 16 is fixedly connected to the side wall of the first fixing plate 13, and the end of the piston rod of the first cylinder 16 is fixedly connected to the first fixing block 15; a second moving plate 17 is slidably connected to both the first fixing plate 13 and the second fixing plate 14; a second fixing block 18 is fixedly connected to the bottom end of the second moving plate 17, and a second cylinder 19 is fixedly connected to the second fixing block 18, and the end of the piston rod of the second cylinder 19 is fixedly connected to the side wall of the second fixing plate 14 through a connecting block; a third moving plate 2 is provided on the placing plate 1, and a pair of second vertical slide rails 21 are fixedly connected to the third moving plate 2; a fourth moving plate 22 is slidably connected to a pair of the second vertical slide rails 21, and a third fixing plate 23 is fixedly connected to one side of the fourth moving plate 22, and a fourth fixing plate 24 is fixedly connected to the other side; a positioning plate 25 is fixedly connected to the tops of the third fixing plate 23 and the fourth fixing plate 24; a third cylinder 26 is fixedly connected to the side wall of the fourth fixing plate 24, and the end of the piston rod of the third cylinder 26 is fixedly connected to the side wall of the third moving plate 2 through a connecting block; lining plates 27 are fixedly connected to the side walls of the second moving plate 17 and the positioning plate 25, and a pair of the lining plates 27 are symmetrically arranged; cutting knife mechanisms 3 are provided at the tops of both the second moving plate 17 and the positioning plate 25; film arranging mechanisms 4 are provided at the tops of both the fourth moving plate 22 and the first moving plate 12;In the prior art, the four-corner cutting mechanism of the traditional corner-cutting film wrapping machine is a fixed mechanism. It is necessary for the handling manipulator to carry the product box to be cut into the four-corner cutting station. After placing, the manipulator can only perform the film arranging and corner cutting operations after leaving the station. After the corner cutting is completed, it is necessary for the manipulator to carry out a second handling to take out the product box with the four corners cut out of the station. The actions of taking and placing by the manipulator are too cumbersome, reducing the overall work efficiency. At the same time, because the wrapping film on the surface of the product box is smooth, it is easy to cause the product to fall off, and the surface wrapping film of the product box may also be damaged by clamping due to excessive clamping force. Therefore, when the present invention works, it adopts a flow-through conveying method. The wrapped product box directly flows into the space between the placing plates 1 through the conveying mechanism 7 in the previous process. Before flowing in, the piston rod of the third cylinder 26 shortens at this time, so that the fourth fixing plate 24 drives the fourth moving plate 22 to move as a whole towards the conveying mechanism 7. Since there is a pair of placing plates 1, at this time, a pair of fourth moving plates 22 and positioning plates 25 move towards each other, so that the lining plate 27 enters above the conveying mechanism 7, and initially intercepts and fixes the product box entering the conveying mechanism 7. Then, the first cylinder 16 extends, driving the first moving plate 12 and the second moving plate 17 to move towards the conveying mechanism 7, so that the lining plate 27 on the second moving plate 17 enters above the conveying mechanism 7. Then, the second cylinder 19 is started, driving the second moving plate 17 and the lining plate 27 to slide horizontally, so that the lining plate 27 on the second moving plate 17 pushes to push the product box, and then the four lining plates 27 clamp and fix the product box. Then, after the film arranging mechanism 4 arranges the film, it is cut by the cutting knife mechanism 3. Then, the first cylinder 16, the second cylinder 19 and the third cylinder 26 are used to return the lining plate 27 to its original position. The product box with the four corners cut is discharged along the conveying mechanism 7, and at the same time, the product box wrapped with the film flows in, and so on in a cycle. Through the flow-through conveying, it can be better connected with the previous wrapping process, avoiding the damage and falling off of the surface of the wrapping film. At the same time, by using the pushing and clamping fixation of the lining plate 27, the stable central placement of the product box can be ensured, facilitating the subsequent film arranging and corner cutting, improving the production efficiency of corner cutting, and further ensuring the quality of film corner cutting.;

[0031] The film arranging mechanism 4 includes a sliding plate 42; placing blocks 41 are fixedly connected to the first moving plates 12; sliding plates 42 are vertically slidably connected to both the placing blocks 41 and the fourth moving plates 22; an adjusting plate 43 is horizontally slidably connected to the sliding plates 42; a film arranging plate 44 and a rotary cylinder 45 are fixedly connected to the adjusting plate 43; a fourth cylinder 46 is fixedly connected to the sliding plates 42, and the piston rod of the fourth cylinder 46 is connected to the piston rod of the rotary cylinder 45 through a connecting block; a fifth cylinder 47 is fixedly connected to the second fixing plate 14, and the piston rod of the fifth cylinder 47 is fixedly connected to the sliding plate 42 on the first moving plate 12 through a connecting block; a sixth cylinder 48 is fixedly connected to the fourth fixing plate 24, and the piston rod of the sixth cylinder 48 is fixedly connected to the sliding plate 42 on the fourth moving plate 22 through a connecting block; during operation, after the product box is clamped by the lining plate 27, the fifth cylinder 47 and the sixth cylinder 48 drive the sliding plate 42 to vertically slide on the placing block 41, so that the end of the film arranging plate 44 fits against the side wall of the product box, and then the fourth cylinder 46 drives the adjusting plate 43 to horizontally move on the sliding plate 42, so that the film arranging plate 44 as a whole moves for scraping the film, enabling the excess four-corner film to be scraped and pressed against the side wall of the lining plate 27, and then the excess four-corner film is cut off by the cutting knife mechanism 3.

[0032] The cutting knife mechanism 3 includes a pushing cylinder 32; L-shaped plates 31 are fixedly connected to both the second moving plate 17 and the positioning plate 25; the pushing cylinder 32 is fixedly connected to the side wall of the L-shaped plate 31; a hot cutting knife 37 is provided at the end of the piston rod of the pushing cylinder 32; during operation, after the four-corner film is scraped and pressed against the side wall of the lining plate 27 by the film arranging plate 44, the pushing cylinder 32 is started at this time, and the hot cutting knife 37 is used to cut and heat-seal the four-corner film to complete the corner cutting process.

[0033] A pushing plate 33 is fixedly connected to the end of the piston rod of the pushing cylinder 32; a U-shaped seat 34 is fixedly connected to the side wall of the pushing plate 33; a cylinder 35 is fixedly connected inside the U-shaped seat 34; a rotating plate 36 is rotatably connected to the cylinder 35, and the side wall of the rotating plate 36 is arranged at the bottom end of the U-shaped seat 34 through a pair of adjusting springs 38, and the pair of adjusting springs 38 are symmetrically arranged with respect to the cylinder 35; the hot cutting knife 37 is fixedly connected to the side wall of the rotating plate 36; during operation, since the rotating plate 36 will be slightly adjusted and rotated on the cylinder 35 under the action of the adjusting springs 38, it can ensure that when the hot cutting knife 37 cuts off the excess four-corner film, it can avoid the influence of uneven thickness or excess impurities, resulting in incomplete fitting and affecting the overall movement and cutting of the hot cutting knife 37. The adjusting springs 38 can be used to slightly rotate and adjust the hot cutting knife 37, and also avoid the problem of rigid collision and damage between the hot cutting knives 37 caused by the influence of impurities.

[0034] A waste suction groove 5 is formed in the side wall of the lining plate 27; a reversed L-shaped plate 51 is fixedly connected to the opening at the bottom end of the waste suction groove 5, and a through cylinder 52 is fixedly connected to the reversed L-shaped plate 51; a group of shielding plates 53 are arranged at the opening of the waste suction groove 5, and a first through groove 54 is formed in the shielding plates 53; a threaded hole 55 is formed in the lining plate 27 at a position corresponding to the first through groove 54, and a bolt is threadedly connected to the threaded hole 55. During operation, after the excess four-corner film impurities are cut off by the hot cutting knife 37, at this time, there is suction force in the waste suction groove 5. When the film arranging plate 44 returns to its original position, the excess impurities will be adsorbed by the suction force of the waste suction groove 5, and then the impurities will be adsorbed through the connection between the reversed L-shaped plate 51 and the waste suction groove 5, avoiding the impurities remaining on the four-corner cutting mechanism after cutting and affecting the operation of the workpiece. At the same time, by setting the shielding plates 53, it can move through the first through groove 54, thereby adjusting the length of the adsorption connection of the waste suction groove 5, and then being able to adapt to the cutting of product boxes with different heights, ensuring the suction force. At the same time, the through cylinder 52 can be used to manually take out the impurities, which is convenient and fast.

[0035] Blow holes 56 are formed in the side wall of the lining plate 27; a rubber strip 58 is fixedly connected to the side wall of the lining plate 27. During operation, when the lining plates 27 are clamped and closed, by blowing air through the blow holes 56, it can prevent the four-corner film from being folded or not unfolded, ensuring the pushing of the film arranging plate 44. The setting of the rubber strip 58 can facilitate the cutting of the four-corner film by the hot cutting knife 37.

[0036] The top view of the film arranging plate 44 is L-shaped; a group of through holes 57 are formed in the side wall of the film arranging plate 44. During operation, the top view of the film arranging plate 44 being L-shaped can facilitate extrusion using the turning point. At the same time, a group of through holes 57 are provided, which can prevent the cut four-corner film from being adsorbed on the film arranging plate 44, facilitating ventilation, and thus facilitating the adsorption of the cut four-corner film by the waste suction groove 5.

[0037] A first horizontal slide rail 6 is fixedly connected to the placing plate 1, and the third moving plate 2 is slidably connected to the first horizontal slide rail 6; a first servo motor 61 is fixedly connected to the placing plate 1, and a first lead screw 62 is provided at the output end of the first servo motor 61, and the first lead screw 62 is connected to the third moving plate 2 through a lead screw-nut pair. During operation, by driving the first lead screw 62 to rotate through the first servo motor 61, the movement of the third moving plate 2 can be driven, thereby adjusting the distance between a pair of lining plates 27 on the placing plate 1 to facilitate adaptation to product boxes with different lengths.

[0038] A pair of adjusting blocks 63 are fixedly connected to the bottom ends of the pair of placing plates 1; a second lead screw 64 is connected between the adjusting blocks 63 through a lead screw nut pair, and the second lead screw 64 is rotated by a second servo motor 65; a third vertical slide rail 66 is arranged at the bottom ends of the pair of placing plates 1, and the placing plates 1 are slidably connected to the third vertical slide rail 66; during operation, the second servo motor 65 is used to drive the pair of placing plates 1 to move towards each other or in opposite directions, thereby adjusting the distance between the pair of placing plates 1, and facilitating product boxes of different widths.

[0039] The conveying mechanism 7 includes a second fixing plate 14 and a fixing frame 74; a fifth fixing plate 73 and a fixing frame 74 are fixedly connected to the side wall of the placing plate 1, a support frame 75 is arranged between the fifth fixing plate 73 and the fixing frame 74, and driving wheels 71 are arranged at both ends of the support frame 75 and the fifth fixing plate 73; a conveyor belt 79 is driven between a group of driving wheels 71; a motor 72 is fixedly connected to the fifth fixing plate 73, and the driving wheels 71 are rotated by the motor 72; a group of seventh cylinders 76 are fixedly connected to the side wall of the support frame 75, and a lifting plate 77 is fixedly connected to the piston rod of the seventh cylinder 76; during operation, the conveyor belt 79 can be driven by the motor 72, and at the same time, the lifting plate 77 can be lifted by a group of seventh cylinders 76, facilitating the placement and flow of product boxes.

[0040] Working principle: In the prior art, the four-corner cutting mechanism of the traditional corner-cutting and film-covering machine is a fixed mechanism. It is necessary for the handling manipulator to transport the product box to be cut into the four-corner cutting station. After placement, the manipulator can only perform the film-aligning and corner-cutting operations after leaving the station. After the corner cutting is completed, it is necessary for the manipulator to perform a secondary handling to take out the product box with four corners cut out of the station. The actions of taking and placing with the manipulator are too cumbersome, reducing the overall work efficiency. At the same time, because the wrapping film on the surface of the product box is smooth, it is easy for the product to fall off, and the surface wrapping film of the product box may also be damaged by clamping due to excessive clamping force. Therefore, when the present invention works, a flow-through conveying method is adopted. The wrapped product box directly flows into the space between the placing plates 1 through the previous process by the conveying mechanism 7. Before flowing in, the piston rod of the third cylinder 26 shortens at this time, so that the fourth fixing plate 24 drives the fourth moving plate 22 as a whole to move towards the conveying mechanism 7. Since there are a pair of placing plates 1, at this time, a pair of fourth moving plates 22 and the positioning plates 25 move towards each other, so that the lining plate 27 enters above the conveying mechanism 7, and initially intercepts and fixes the product box entering the conveying mechanism 7. Then, the first cylinder 16 extends, driving the first moving plate 12 and the second moving plate 17 to move towards the conveying mechanism 7, so that the lining plate 27 on the second moving plate 17 enters above the conveying mechanism 7. Then, the second cylinder 19 is started, driving the second moving plate 17 and the lining plate 27 to slide horizontally, so that the lining plate 27 on the second moving plate 17 pushes the product box, and then the four lining plates 27 clamp and fix the product box. Then, after the film-aligning mechanism 4 aligns the film, it is cut by the cutting knife mechanism 3. Then, the first cylinder 16, the second cylinder 19 and the third cylinder 26 are used to return the lining plate 27 to its original position. The product box with four corners cut is discharged along the conveying mechanism 7, and at the same time, the wrapped product box flows in, repeating in a cycle. Through the flow-through conveying, it can be better connected with the previous wrapping process, avoiding damage and falling off of the surface of the wrapping film. At the same time, by using the pushing and clamping fixation of the lining plate 27, the stable central placement of the product box can be ensured, facilitating subsequent film-aligning and corner-cutting, improving the production efficiency of corner-cutting, and further ensuring the quality of film corner-cutting; after the lining plate 27 clamps the product box, the fifth cylinder 47 and the sixth cylinder 48 drive the sliding plate 42 to slide vertically on the placing block 41, so that the end of the film-aligning plate 44 fits against the side wall of the product box. Then, the fourth cylinder 46 drives the adjusting plate 43 to move horizontally on the sliding plate 42, so that the film-aligning plate 44 moves as a whole to scrape the film, and the excess four-corner film can be scraped and pressed against the side wall of the lining plate 27. The pushing cylinder 32 is started, and the four-corner film is cut and heat-sealed by the hot cutting knife 37 to complete the corner-cutting process;After the hot cutter 37 cuts off the extra four-corner impurities, there is suction in the waste adsorption tank 5. When the film sorting plate 44 returns to its original position, the extra impurities will be adsorbed by the suction of the waste adsorption tank 5, and then adsorbed by the connection between the inverted L-shaped plate 51 and the waste adsorption tank 5, so as to avoid the impurities being located on the four-corner cutting mechanism after cutting, affecting the operation of the workpiece. At the same time, by using the setting of the shielding plate 53, it can be moved through the first through slot 54, so as to adjust the length of the adsorption connection of the waste adsorption tank 5, so as to be suitable for the cutting of product boxes of different heights, ensure the adsorption force, and at the same time, the through cylinder 52 can be used to manually remove the impurities, which is convenient and quick. ;

[0041] The above-mentioned front, back, left, right, top and bottom are all based on the figures in the specification. Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0042] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present invention.

[0043] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A conveying type four-corner cutting mechanism, characterized in that: It includes a placement plate (1); conveying mechanisms (7) are provided on the opposite surfaces of a pair of the placement plates (1); a pair of first vertical slide rails (11) are fixedly connected to the placement plate (1), and a first moving plate (12) is slidably connected to the first vertical slide rails (11); a first fixed plate (13) is fixedly connected to one side of the first moving plate (12), and a second fixed plate (14) is fixedly connected to the other side; a first fixed block (15) is fixedly connected to the placement plate (1), and a first air cylinder (16) is fixedly connected to the side wall of the first fixed plate (13), and the end of the piston rod of the first air cylinder (16) is fixedly connected to the first fixed block (15); second moving plates (17) are slidably connected to both the first fixed plate (13) and the second fixed plate (14); a second fixed block (18) is fixedly connected to the bottom end of the second moving plate (17), and a second air cylinder (19) is fixedly connected to the second fixed block (18), and the end of the piston rod of the second air cylinder (19) is fixedly connected to the side wall of the second fixed plate (14) through a connecting block; a third moving plate (2) is provided on the placement plate (1), and a pair of second vertical slide rails (21) are fixedly connected to the third moving plate (2); a fourth moving plate (22) is slidably connected to the pair of second vertical slide rails (21), and a third fixed plate (23) is fixedly connected to one side of the fourth moving plate (22), and a fourth fixed plate (24) is fixedly connected to the other side; a positioning plate (25) is fixedly connected to the tops of the third fixed plate (23) and the fourth fixed plate (24); a third air cylinder (26) is fixedly connected to the side wall of the fourth fixed plate (24), and the end of the piston rod of the third air cylinder (26) is fixedly connected to the side wall of the third moving plate (2) through a connecting block; lining plates (27) are fixedly connected to both the side walls of the second moving plate (17) and the positioning plate (25), and the pair of lining plates (27) are symmetrically arranged; cutting knife mechanisms (3) are provided at the tops of both the second moving plate (17) and the positioning plate (25); film arranging mechanisms (4) are provided at the tops of both the fourth moving plate (22) and the first moving plate (12); The film arranging mechanism (4) includes a sliding plate (42); placement blocks (41) are fixedly connected to the first moving plate (12); sliding plates (42) are vertically slidably connected to both the placement blocks (41) and the fourth moving plate (22); an adjusting plate (43) is horizontally slidably connected to the sliding plate (42); a film arranging plate (44) and a rotary air cylinder (45) are fixedly connected to the adjusting plate (43); a fourth air cylinder (46) is fixedly connected to the sliding plate (42), and the piston rod of the fourth air cylinder (46) is connected to the piston rod of the rotary air cylinder (45) through a connecting block; a fifth air cylinder (47) is fixedly connected to the second fixed plate (14), and the piston rod of the fifth air cylinder (47) is fixedly connected to the sliding plate (42) on the first moving plate (12) through a connecting block; a sixth air cylinder (48) is fixedly connected to the fourth fixed plate (24), and the piston rod of the sixth air cylinder (48) is fixedly connected to the sliding plate (42) on the fourth moving plate (22) through a connecting block; The cutting tool mechanism (3) includes a pushing air cylinder (32); L-shaped plates (31) are fixedly connected to both the second moving plate (17) and the positioning plate (25); the pushing air cylinder (32) is fixedly connected to the side wall of the L-shaped plate (31); a hot cutting tool (37) is provided at the end of the piston rod of the pushing air cylinder (32). A pushing plate (33) is fixedly connected to the end of the piston rod of the pushing air cylinder (32); a U-shaped seat (34) is fixedly connected to the side wall of the pushing plate (33); a cylinder (35) is fixedly connected inside the U-shaped seat (34); a rotating plate (36) is rotatably connected to the cylinder (35), and the side wall of the rotating plate (36) is arranged on the bottom end of the U-shaped seat (34) through a pair of adjusting springs (38), and the pair of adjusting springs (38) are symmetrically arranged with respect to the cylinder (35); the hot cutting tool (37) is fixedly connected to the side wall of the rotating plate (36). A waste material adsorption groove (5) is formed on the side wall of the lining plate (27); an inverted L-shaped plate (51) is fixedly connected to the opening at the bottom end of the waste material adsorption groove (5), and a through cylinder (52) is fixedly connected to the inverted L-shaped plate (51); a group of shielding plates (53) are arranged at the opening of the waste material adsorption groove (5), and a first through groove (54) is formed on the shielding plate (53); a threaded hole (55) is formed in the lining plate (27) at the position corresponding to the first through groove (54), and a bolt is threadedly connected to the threaded hole (55).

2. The conveying type four-corner cutting mechanism according to claim 1, wherein: An air blowing hole (56) is formed on the side wall of the lining plate (27); a rubber strip (58) is fixedly connected to the side wall of the lining plate (27).

3. The conveying type four-corner cutting mechanism according to claim 2, characterized in that: The top view of the film arranging plate (44) is L-shaped; a group of through holes (57) are formed on the side wall of the film arranging plate (44).

4. The conveying type four-corner cutting mechanism according to claim 3, characterized in that: A first horizontal slide rail (6) is fixedly connected to the placing plate (1), and the third moving plate (2) is slidably connected to the first horizontal slide rail (6); a first servo motor (61) is fixedly connected to the placing plate (1), and a first lead screw (62) is provided at the output end of the first servo motor (61), and a lead screw nut pair is connected between the first lead screw (62) and the third moving plate (2).

5. The conveying type four-corner cutting mechanism according to claim 4, wherein: A pair of adjusting blocks (63) are fixedly connected to the bottom ends of the pair of placing plates (1); a second lead screw (64) is connected between the pair of adjusting blocks (63) through a lead screw nut pair, and the second lead screw (64) is rotated by a second servo motor (65); a third vertical slide rail (66) is arranged at the bottom ends of the pair of placing plates (1), and the placing plate (1) is slidably connected to the third vertical slide rail (66).

6. The conveying type four-corner cutting mechanism according to claim 5, characterized in that: The conveying mechanism (7) includes a second fixing plate (14) and a fixing frame (74); a fifth fixing plate (73) and a fixing frame (74) are fixedly connected to the side wall of the placing plate (1), a support frame (75) is provided between the fifth fixing plate (73) and the fixing frame (74), and driving wheels (71) are provided at both ends of the support frame (75) and the fifth fixing plate (73); a group of driving wheels (71) are driven by a conveyor belt (79); a motor (72) is fixedly connected to the fifth fixing plate (73), and the driving wheel (71) rotates through the motor (72); a group of seventh cylinders (76) are fixedly connected to the side wall of the support frame (75), and a lifting plate (77) is fixedly connected to the piston rod of the seventh cylinder (76).

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