Blank pressing and cutting device for film blowing plastic bag

Abstract

The edge pressing and cutting device comprises an operation table, four embedding grooves and a cutter groove are formed in the top of the operation table, two vertical plates are fixedly connected to the top of the operation table, a transverse plate is fixedly connected between the tops of the two vertical plates, guide grooves are formed in the vertical plates, and the transverse plate is fixedly connected with the guide grooves. The bottoms of the guide grooves communicate with the cutter groove, a connecting plate is slidably connected between the inner walls of the guide grooves, a cutter is fixedly connected to the bottom of the connecting plate, a U-shaped pressure plate is slidably connected between the inner walls of the two embedding grooves, and a lifting assembly is arranged at the top of the operation table and used for driving the U-shaped pressure plate to move. An edge pressing plate is connected between the inner walls of the U-shaped pressure plates in a sliding mode. The edge pressing plate is driven by the pressure assembly to move and make contact with the tops of the stacked film blowing plastic bags, the friction force between the edge pressing plate and the film blowing plastic bags is further increased through the tooth openings formed in the bottom of the edge pressing plate, and the accuracy of the film blowing plastic bags in the cutting process is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of film blowing plastic bag cutting devices, in particular to an edge pressing and cutting device for film blowing plastic bags. Background Art

[0002] The blown film plastic bag cutting device is a device used to produce and process plastic bags. It makes plastic bags of different sizes and shapes by cutting and shaping. It is widely used in food packaging, medical supplies packaging and other fields. The device is usually composed of a cutting knife, a transmission system and a control system, and can complete the plastic bag cutting task efficiently and accurately.

[0003] When cutting blown film plastic bags, the existing blown film plastic bag cutting device usually uses a traction device to drive the blown film plastic bag to move, and uses a cutter to press down to cut and separate the blown film plastic bag. However, in the process of cutting the stacked blown film plastic bags, the existing blown film plastic bag cutting device cannot meet the corresponding cutting conditions, further affecting the cutting efficiency of the stacked blown film plastic bags. Utility Model Content

[0004] The purpose of the utility model is to provide a press edge cutting device for blown film plastic bags to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a press edge cutting device for blown film plastic bags, comprising an operating table, the top of the operating table is provided with four embedding grooves and a cutting knife groove, the top of the operating table is fixedly connected to two vertical plates, a horizontal plate is fixedly connected between the tops of the two vertical plates, a guide groove is provided inside the vertical plate, the bottom of the guide groove is communicated with the cutting knife groove, a connecting plate is slidably connected between the inner walls of the guide groove, a cutting knife is fixedly connected to the bottom of the connecting plate, a U-shaped pressure plate is slidably connected between the inner walls of the two embedding grooves, a lifting assembly is provided on the top of the operating table, the lifting assembly is used to drive the U-shaped pressure plate to move, a press edge plate is slidably connected between the inner walls of the U-shaped pressure plate, a pressure assembly is provided on the top of the U-shaped pressure plate, and the pressure assembly is used to drive the press edge plate to move.

[0006] As a further preferred embodiment of the present technical solution, the lifting assembly includes two first threaded rods, both of which are rotatably connected to the top of the operating table, the outer sides of the first threaded rods are threadedly connected to a connecting block, one side of the connecting block is fixedly connected to a U-shaped pressure plate, and the top of the first threaded rod is fixedly connected to a first limit plate.

[0007] As a further preferred embodiment of the present technical solution, the pressure assembly includes two U-shaped mounting plates, and the two U-shaped mounting plates are respectively fixedly connected to the tops of the two U-shaped pressure plates, an active roller is rotatably connected between the inner wall of the U-shaped mounting plate and the top of the U-shaped pressure plate, a driven roller is rotatably connected to the top of the U-shaped pressure plate, a transmission belt is arranged between the active roller and the driven roller, the internal thread of the driven roller is connected to a second threaded rod, one end of the second threaded rod extends to the interior of the U-shaped pressure plate and is fixedly connected to the edge pressure plate, and a second limit plate is fixedly connected to the top of the second threaded rod.

[0008] As a further preferred embodiment of the present technical solution, two lifting motors are fixedly installed on the bottom of the operating table, and the output ends of the lifting motors pass through the operating table and are fixedly connected to the first threaded rod.

[0009] As a further preferred embodiment of the present technical solution, a servo motor is fixedly mounted on the top of the U-shaped mounting plate, and an output end of the servo motor extends to the inside of the U-shaped mounting plate and is fixedly connected to the active roller.

[0010] As a further preferred embodiment of the present technical solution, an electric pressure cylinder is fixedly installed on the top of the transverse plate, and an output end of the electric pressure cylinder extends to the bottom of the transverse plate and is fixedly connected to the connecting plate.

[0011] As a further preferred embodiment of the present technical solution, a tooth opening is provided at the bottom of the edge holding plate.

[0012] The utility model provides a pressing and cutting device for blown film plastic bags, which has the following beneficial effects:

[0013] (1) The utility model drives the edge holding plate to move and contact the top of the stacked blown film plastic bags through the pressure component, and further utilizes the teeth opened at the bottom of the edge holding plate to increase the friction between the edge holding plate and the blown film plastic bags, thereby improving the accuracy of the blown film plastic bag cutting process.

[0014] (2) The utility model drives the U-shaped pressure plate to move inside the embedding groove through the lifting component, which further facilitates the initial fixation of the stacked blown film plastic bags through the movement of the U-shaped pressure plate, thereby preventing the blown film plastic bags from moving during the cutting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0016] Figure 2 It is a schematic diagram of a half-section structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the operating table structure of the utility model;

[0018] Figure 4 This is a schematic diagram of the U-shaped pressure plate structure of the utility model;

[0019] In the figure: 1. operating table; 2. embedding groove; 3. cutting knife groove; 4. vertical plate; 5. U-shaped pressure plate; 6. guide groove; 7. electric pressure cylinder; 8. connecting plate; 9. cutting knife; 10. horizontal plate; 11. first threaded rod; 12. lifting motor; 13. first limit plate; 14. U-shaped mounting plate; 15. servo motor; 16. active roller; 17. driven roller; 18. transmission belt; 19. second threaded rod; 20. edge pressure plate; 21. second limit plate; 22. connecting block. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0021] The utility model provides a technical solution: Figure 1-Figure 4 As shown, in the present embodiment, a press edge cutting device for blown film plastic bags comprises an operating table 1, the top of the operating table 1 is provided with four embedding grooves 2 and a cutting knife groove 3, the top of the operating table 1 is fixedly connected with two vertical plates 4, a horizontal plate 10 is fixedly connected between the tops of the two vertical plates 4, a guide groove 6 is provided inside the vertical plate 4, the bottom of the guide groove 6 is communicated with the cutting knife groove 3, a connecting plate 8 is slidably connected between the inner walls of the guide groove 6, a cutting knife 9 is fixedly connected to the bottom of the connecting plate 8, a U-shaped pressure plate 5 is slidably connected between the inner walls of the two embedding grooves 2, a lifting assembly is provided on the top of the operating table 1, the lifting assembly is used to drive the U-shaped pressure plate 5 to move, a press edge plate 20 is slidably connected between the inner walls of the U-shaped pressure plate 5, a pressure assembly is provided on the top of the U-shaped pressure plate 5, the pressure assembly is used to drive the press edge plate 20 to move, an electric pressure cylinder 7 is fixedly installed on the top of the horizontal plate 10, the output end of the electric pressure cylinder 7 extends to the bottom of the horizontal plate 10 and is fixedly connected to the connecting plate 8, and a tooth opening is provided at the bottom of the press edge plate 20.

[0022] When cutting the stacked blown film plastic bags, first place the stacked blown film plastic bags on the top of the operating table 1, then drive the U-shaped pressure plate 5 to move through the lifting assembly, so that the top of the inner wall of the U-shaped pressure plate 5 contacts the blown film plastic bags and achieves preliminary fixation, then drive the edge pressing plate 20 to press down through the pressure assembly, use the edge pressing plate 20 to contact the blown film plastic bags, use the teeth of the edge pressing plate 20 to position the blown film plastic bags, further compact and fix the cut edges of the blown film plastic bags, finally use the electric pressure cylinder 7 to push the connecting plate 8 and drive the cutting knife 9 to move downward, and finally complete the overall cutting of the stacked blown film plastic bags, thereby further improving the cutting efficiency of the blown film plastic bags.

[0023] like Figure 1-Figure 4As shown, the lifting assembly includes two first threaded rods 11, and the two first threaded rods 11 are rotatably connected to the top of the operating table 1. The outer side of the first threaded rod 11 is threadedly connected to a connecting block 22, one side of the connecting block 22 is fixedly connected to the U-shaped pressure plate 5, and the top of the first threaded rod 11 is fixedly connected to a first limit plate 13. Two lifting motors 12 are fixedly installed on the bottom of the operating table 1, and the output end of the lifting motor 12 passes through the operating table 1 and is fixedly connected to the first threaded rod 11.

[0024] The two first threaded rods 11 are driven to rotate by two lifting motors 12, so that the connecting block 22 outside the first threaded rod 11 moves outside the first threaded rod 11, further driving the U-shaped pressure plate 5 to move between the inner walls of the embedding groove 2, thereby facilitating the initial fixation of the blown film plastic bag by moving the U-shaped pressure plate 5.

[0025] like Figure 1-Figure 4 As shown, the pressure assembly includes two U-shaped mounting plates 14, and the two U-shaped mounting plates 14 are respectively fixedly connected to the tops of the two U-shaped pressure plates 5. An active roller 16 is rotatably connected between the inner wall of the U-shaped mounting plate 14 and the top of the U-shaped pressure plate 5. A driven roller 17 is rotatably connected to the top of the U-shaped pressure plate 5. A transmission belt 18 is arranged between the active roller 16 and the driven roller 17. The internal thread of the driven roller 17 is connected to a second threaded rod 19, one end of the second threaded rod 19 extends to the interior of the U-shaped pressure plate 5 and is fixedly connected to the edge pressure plate 20, the top of the second threaded rod 19 is fixedly connected to a second limiting plate 21, and a servo motor 15 is fixedly installed on the top of the U-shaped mounting plate 14, and the output end of the servo motor 15 extends to the interior of the U-shaped mounting plate 14 and is fixedly connected to the active roller 16.

[0026] After completing the preliminary fixation of the blown film plastic bag, the servo motor 15 is used to drive the active roller 16 to rotate, and the driven roller 17 is further rotated synchronously through the transmission belt 18. Since the second threaded rod 19 and the inner part of the driven roller 17 are in a threaded connection relationship, the second threaded rod 19 drives the edge holding plate 20 to move between the inner walls of the U-shaped pressure plate 5 while the driven roller 17 rotates, which further facilitates the use of the edge holding plate 20 to perform the final positioning of the cut edge of the blown film plastic bag, thereby facilitating the positioning of the cut edge to improve the accuracy of the blown film plastic bag and further improve the cutting efficiency.

[0027] The utility model provides a pressure edge cutting device for blown film plastic bags, and the specific working principle is as follows: when cutting the stacked blown film plastic bags, firstly, the stacked blown film plastic bags are placed on the top of the operating table 1, and then two first threaded rods 11 are driven to rotate by two lifting motors 12, so that the connecting blocks 22 outside the first threaded rods 11 move outside the first threaded rods 11, and further drive the U-shaped pressure plate 5 to move, so that the top of the inner wall of the U-shaped pressure plate 5 contacts the blown film plastic bag and achieves preliminary fixation, and then the servo motor 1 is used to drive the two first threaded rods 11 to rotate, so that the connection ... then the U-shaped pressure plate 5 is driven to move, so that the top of the inner wall of the U-shaped pressure plate 5 contacts the blown film plastic bag and achieves preliminary fixation, and then the servo motor 1 is used to drive the two first threaded rods 11 to rotate, so that the two first threaded rods 11 are driven to rotate, so that the two first threaded rods 11 are driven to rotate, and then the two first threaded rods 11 are driven to rotate, so that the two first threaded rods 11 are driven to rotate, and then the two first threaded rods 11 are driven to rotate, so that the two first threaded rods 11 are driven to rotate, and then the two first threaded rods 11 are driven to rotate, so that the two first 5 drives the active roller 16 to rotate, and further makes the driven roller 17 rotate synchronously through the transmission belt 18. Since the second threaded rod 19 is in a threaded connection relationship with the inner part of the driven roller 17, the second threaded rod 19 drives the edge holding plate 20 to move between the inner walls of the U-shaped pressure plate 5 while the driven roller 17 rotates. After the edge holding plate 20 contacts the blown film plastic bag, the tooth mouth of the edge holding plate 20 is used to compact and position the blown film plastic bag. Finally, the electric pressure cylinder 7 is used to push the connecting plate 8 and drive the cutting knife 9 to move downward to complete the cutting of the blown film plastic bag.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for cutting edge of blown film plastic bags, comprising an operating table (1), characterized in that: The top of the operating table (1) is provided with four embedding grooves (2) and a cutting groove (3); the top of the operating table (1) is fixedly connected with two vertical plates (4); a horizontal plate (10) is fixedly connected between the tops of the two vertical plates (4); a guide groove (6) is provided inside the vertical plate (4); the bottom of the guide groove (6) is communicated with the cutting groove (3); a connecting plate (8) is slidably connected between the inner walls of the guide groove (6); a cutting knife (9) is fixedly connected to the bottom of the connecting plate (8); a U-shaped pressure plate (5) is slidably connected between the inner walls of the two embedding grooves (2); a lifting assembly is provided on the top of the operating table (1); the lifting assembly is used to drive the U-shaped pressure plate (5) to move; a pressure plate (20) is slidably connected between the inner walls of the U-shaped pressure plate (5); a pressure assembly is provided on the top of the U-shaped pressure plate (5); the pressure assembly is used to drive the pressure plate (20) to move.

2. The edge pressing and cutting device for blown film plastic bags according to claim 1, characterized in that: The lifting assembly comprises two first threaded rods (11), both of which are rotatably connected to the top of the operating table (1), the outer side of the first threaded rod (11) is threadedly connected to a connecting block (22), one side of the connecting block (22) is fixedly connected to a U-shaped pressure plate (5), and the top of the first threaded rod (11) is fixedly connected to a first limit plate (13).

3. The edge pressing and cutting device for blown film plastic bags according to claim 1, characterized in that: The pressure assembly comprises two U-shaped mounting plates (14), the two U-shaped mounting plates (14) are respectively fixedly connected to the tops of two U-shaped pressure plates (5), an active roller (16) is rotatably connected between the inner wall of the U-shaped mounting plate (14) and the top of the U-shaped pressure plate (5), a driven roller (17) is rotatably connected to the top of the U-shaped pressure plate (5), a transmission belt (18) is arranged between the active roller (16) and the driven roller (17), the internal thread of the driven roller (17) is connected to a second threaded rod (19), one end of the second threaded rod (19) extends to the inside of the U-shaped pressure plate (5) and is fixedly connected to the edge pressure plate (20), and the top of the second threaded rod (19) is fixedly connected to a second limit plate (21).

4. The edge pressing and cutting device for blown film plastic bags according to claim 2, characterized in that: Two lifting motors (12) are fixedly mounted on the bottom of the operating table (1), and the output ends of the lifting motors (12) pass through the operating table (1) and are fixedly connected to the first threaded rod (11).

5. The edge pressing and cutting device for blown film plastic bags according to claim 3, characterized in that: A servo motor (15) is fixedly mounted on the top of the U-shaped mounting plate (14), and an output end of the servo motor (15) extends into the interior of the U-shaped mounting plate (14) and is fixedly connected to the active roller (16).

6. The edge pressing and cutting device for blown film plastic bags according to claim 1, characterized in that: An electric pressure cylinder (7) is fixedly mounted on the top of the transverse plate (10), and an output end of the electric pressure cylinder (7) extends to the bottom of the transverse plate (10) and is fixedly connected to a connecting plate (8).

7. The edge pressing and cutting device for blown film plastic bags according to claim 1, characterized in that: The bottom of the edge pressing plate (20) is provided with a tooth opening.

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