Plastic extrusion wire drawing machine for plastic packaging bag production

Abstract

The invention discloses a plastic extrusion wire drawing machine for plastic packaging bag production, and belongs to the technical field of plastic packaging bag production, the plastic extrusion wire drawing machine comprises two bases as well as a rotating roller and a rotating drum which are arranged on the bases, a U-shaped seat is fixed between the two bases, and a supporting plate capable of moving up and down is arranged at the top of the U-shaped seat; the two sides of the top of the supporting plate are each provided with a first roller assembly, a second roller assembly and a third roller assembly, each first roller assembly comprises a first clamping seat A, a first clamping seat B and a first roller part, each second roller assembly comprises a second clamping seat A, a second clamping seat B and a second roller part, and each third roller assembly comprises a third clamping seat A, a third clamping seat B and a third roller part. When the device is used, the film which is obviously corrugated or folded together can be unfolded through the first roller piece, the second roller piece and the third roller piece which are inclined to the moving direction of the film, so that the film at the position can be continuously used after being cut into flat filaments by the cutter ring, and the waste of the film is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of plastic packaging bag production, and in particular relates to a plastic extrusion wire drawing machine for producing plastic packaging bags. Background Art

[0002] Plastic packaging bags are widely used in daily life. Rice bags and fertilizer bags usually belong to the category of plastic packaging bags. The production of plastic packaging bags involves multiple processes, among which plastic extrusion and drawing is an important link. Through the plastic extrusion and drawing machine, the plastic material is heated and melted and extruded through a die to form a film or filamentary material, and then after cooling, stretching and cutting processes, it finally forms the base material for making plastic bags.

[0003] In the prior art, when producing plastic packaging bags such as rice bags and fertilizer bags, the raw materials are heated and pressed into thin films, which are then transported to a knife ring to form flat yarns, and then stretched to prepare usable flat yarns. However, when the film is transported to the knife ring, the film is prone to corrugation during the transport process due to its wide width, which may cause the film to overlap. Summary of the invention

[0004] The object of the present invention is to provide a plastic extrusion wire drawing machine for producing plastic packaging bags, so as to solve the problem that when producing flat wires required for rice bags and fertilizer bags in the prior art mentioned in the above background technology, the film may overlap due to corrugation during transportation.

[0005] To achieve the above object, the present invention provides the following technical solution: a plastic extrusion wire drawing machine for producing plastic packaging bags, comprising two bases and rotating rollers and a rotating drum arranged on the bases, a U-shaped seat is fixed between the two bases, a supporting plate that can move up and down is arranged on the top of the U-shaped seat, and a first roller assembly, a second roller assembly and a third roller assembly are arranged on both sides of the top of the supporting plate; The first roller assembly comprises a first clamping seat A, a first clamping seat B and a first roller member, and a first clamping rod is provided on one side of the first clamping seat B; The second roller assembly comprises a second clamping seat A, a second clamping seat B and a second roller member, wherein the second clamping seat A is fixed with a first clamping block via a first fixing block, the first clamping block acts on a first clamping rod, and a second clamping rod is arranged on one side of the second clamping seat B; The third roller assembly comprises a third clamping seat A, a third clamping seat B and a third roller member. The third clamping seat A is fixed with a second clamping block via a second fixing block. The second clamping block acts on the second clamping rod.

[0006] As a preferred embodiment of the present invention, a square cutout is provided on both of the two bases, and the support plate is located in the square cutout.

[0007] As a preferred embodiment of the present invention, the rotating roller and the rotating drum are rotatably connected to the base via a roller clamp, a ceramic knife is fixed to the side wall of the rotating drum, and the length of the ceramic knife near the center of the rotating drum is longer than the length of the ceramic knife away from the center of the rotating drum.

[0008] As a preferred embodiment of the present invention, lifting limit blocks are fixed on both side walls of the support plate, and both side walls of the U-shaped seat are provided with limit grooves, and the lifting limit blocks are located in the limit grooves.

[0009] As a preferred embodiment of the present invention, sliding limit blocks are provided on both sides of the top of the above-mentioned support plate, and a limit slot is provided through the top of the above-mentioned sliding limit block.

[0010] As a preferred embodiment of the present invention, driving motors are fixed on both sides of the top of the above-mentioned support plate through connecting plates, the output end of the above-mentioned driving motor is coaxially connected with a threaded rod, and a matching block is fixed on one side of the above-mentioned first clamping seat A close to the threaded rod, and the above-mentioned matching block is threadedly connected to the threaded rod.

[0011] As a preferred embodiment of the present invention, a first circular hole is formed on the first fixing block, a second circular hole is formed on the second fixing block, a diameter of the second circular hole is larger than a diameter of the first circular hole, and the threaded rod is inserted into the first circular hole and the second circular hole.

[0012] As a preferred embodiment of the present invention, the first card holder A, the second card holder A and the third card holder A are located in one of the limiting card slots, and the first card holder B, the second card holder B and the third card holder B are located in another limiting card slot.

[0013] As a preferred embodiment of the present invention, a first baffle is fixed to the side wall of the threaded rod near the second clamping seat A, and the first baffle is located on the side of the second clamping seat A away from the driving motor. A first tension spring is arranged between the first baffle and the second clamping seat A and is sleeved on the threaded rod.

[0014] As a preferred embodiment of the present invention, a second baffle is fixed to the side wall of the threaded rod near the third clamping seat A, and the second baffle is located on the side of the third clamping seat A away from the driving motor. A second tension spring is arranged between the second baffle and the third clamping seat A and is sleeved on the threaded rod.

[0015] Beneficial Effects

[0016] Technical effects and advantages of this plastic extrusion wire drawing machine for plastic packaging bag production: When using the plastic extrusion wire drawing machine for producing plastic packaging bags, if the film has obvious corrugations or even folds together during the conveying process, the first roller assembly can be stopped at the obvious corrugations or folds, and then the first roller assembly, the second roller assembly and the third roller assembly can be lifted up by lifting the support plate, so that the first roller member, the second roller member and the third roller member act on the film. When the device is in use, the film with obvious corrugations or folds together can be unfolded by the first roller member, the second roller member and the third roller member inclined to the moving direction of the film, so that the film at this location can continue to be used after being cut into flat wires by the knife ring, thereby reducing the waste of film.

[0017] After processing the corrugated or folded film, under the action of the second tension spring and the first tension spring, the third roller assembly, the second roller assembly and the first roller assembly are reset in sequence. This structure prevents the first roller member, the second roller member and the third roller member from acting on the same position of the film at the same time, thereby reducing the probability of deformation of the film due to excessive force. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is a schematic diagram of the structure of a plastic extrusion wire drawing machine for producing plastic packaging bags; Figure 2 for Figure 1 Partial structural decomposition diagram; Figure 3 for Figure 2 The enlarged view of point A in the middle; Figure 4 for Figure 2 A schematic diagram of the structure of the middle drive motor, the threaded rod, the first roller assembly, the second roller assembly and the third roller assembly; Figure 5 for Figure 4 A partial structural diagram of Figure 6 for Figure 5 A schematic diagram of the structure of the first roller assembly, the second roller assembly and the third roller assembly; Figure 7 for Figure 5 Schematic diagram of the structure of the first baffle, the first tension spring, the second baffle and the second tension spring.

[0020] In the figure: 101, base; 102, square cutout; 103, U-shaped seat; 104, limiting groove; 105, roller holder; 111. rotating roller; 112. rotating drum; 113. ceramic knife; 21. Support plate; 22. Lifting limit block; 23. Sliding limit block; 24. Limit slot; 3. First roller assembly; 31. First clamping seat A; 311. Matching block; 32. First clamping seat B; 321. First clamping rod; 33. First roller member; 4. Second roller assembly; 41. Second clamping seat A; 411. First fixing block; 412. First round hole; 413. First clamping block; 42. Second clamping seat B; 421. Second clamping rod; 43. Second roller member; 5. The third roller assembly; 51. The third holder A; 511. The second fixing block; 512. The second round hole; 513. The second holder block; 52. The third holder B; 53. The third roller member; 61. driving motor; 62. threaded rod; 63. first baffle; 631. first tension spring; 64. second baffle; 641. second tension spring. DETAILED DESCRIPTION

[0021] In the following description, a large number of specific details are given to provide a more thorough understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without one or more of these details. In order to avoid confusion with the present invention, some technical features known in the art are not described.

[0022] Unless otherwise defined, the up, down, left, right, front, back, inside and outside directions involved in this document are based on the up, down, left, right, front, back, inside and outside directions in the figures shown in the present invention, and are explained here together.

[0023] The connection method can adopt existing methods such as bonding, welding, bolt connection, etc., depending on actual needs.

[0024] Please refer to Figure 1-Figure 7 A plastic extrusion wire drawing machine for producing plastic packaging bags is shown, comprising two bases 101 and a rotating roller 111 and a rotating drum 112 arranged on the bases 101. Square cutouts 102 are opened on the two bases 101, and the support plate 21 is located in the square cutouts 102. The rotating rollers 111 and the rotating drum 112 are rotatably connected to the bases 101 via roller holders 105. A ceramic knife 113 is fixed to the side wall of the rotating drum 112, and the length of the ceramic knife 113 near the center of the rotating drum 112 is longer than the length of the ceramic knife 113 away from the center of the rotating drum 112.

[0025] like Figure 1 , Figure 2 As shown, in the present invention, the medium-length ceramic knife 113 in the prior art is set to a structure that is long in the middle and short on both sides. Because in the prior art, when the ceramic knife 113 is used to cut the film into flat wires, after the two sides are cut into flat wires, the film in the middle position is still not cut, resulting in this section of film being wasted. Therefore, the present invention lengthens the length of the middle ceramic knife 113, which is convenient for quickly cutting the film in the middle position and reducing the amount of film waste.

[0026] In this embodiment, a U-shaped seat 103 is fixed between the two bases 101 , a support plate 21 that can move up and down is arranged on the top of the U-shaped seat 103 , and a first roller assembly 3 , a second roller assembly 4 and a third roller assembly 5 are arranged on both sides of the top of the support plate 21 .

[0027] The first roller assembly 3 includes a first clamping seat A31, a first clamping seat B32 and a first roller member 33. A first clamping rod 321 is provided on one side of the first clamping seat B32.

[0028] The second roller assembly 4 includes a second clamping seat A41, a second clamping seat B42 and a second roller member 43. The second clamping seat A41 is fixed with a first clamping block 413 via a first fixing block 411. The first clamping block 413 acts on the first clamping rod 321. A second clamping rod 421 is provided on one side of the second clamping seat B42.

[0029] The third roller assembly 5 includes a third clamping seat A51 , a third clamping seat B52 and a third roller member 53 . The third clamping seat A51 is fixed with a second clamping block 513 via a second fixing block 511 . The second clamping block 513 acts on the second clamping rod 421 .

[0030] like Figure 2 , Figure 4 As shown, the first roller assembly 3, the second roller assembly 4 and the third roller assembly 5 are arranged on both sides of the top of the support plate 21, and the first roller assembly 3, the second roller assembly 4 and the third roller assembly 5 are all inclined so that the side of the first roller member 33, the second roller member 43 and the third roller member 53 close to the center of the support plate 21 is located at the front side of the film moving direction. At this time, the first roller member 33, the second roller member 43 and the third roller member 53 can act on the film with corrugations or folds to unfold the corrugations or folds, thereby reducing the probability of the film folding together.

[0031] When the first roller assembly 3 moves toward the center of the film, the first clamping rod 321 is attached to the first clamping block 413, and the first roller assembly 3 can move with the second roller assembly 4; when the second clamping rod 421 is attached to the second clamping block 513, the second roller assembly 4 can move with the third roller assembly 5.

[0032] In this embodiment, lifting limit blocks 22 are fixed on both side walls of the support plate 21 , and both side walls of the U-shaped seat 103 are provided with limit grooves 104 , in which the lifting limit blocks 22 are located.

[0033] like Figure 2 As shown, the support plate 21 is constrained on the U-shaped seat 103 by the lifting limit block 22. When the first roller assembly 3, the second roller assembly 4 and the third roller assembly 5 need to act on the film, the support plate 21 is moved upward so that the first roller assembly 3, the second roller assembly 4 and the third roller assembly 5 are attached to the bottom of the film. When it is not necessary to act on the film, the support plate 21 is in a state of being attached to the U-shaped seat 103.

[0034] In this embodiment, sliding limit blocks 23 are provided on both sides of the top of the support plate 21, and a limit slot 24 is provided through the top of the sliding limit block 23. The first card seat A31, the second card seat A41 and the third card seat A51 are located in one of the limit slots 24, and the first card seat B32, the second card seat B42 and the third card seat B52 are located in the other limit slot 24.

[0035] like Figure 3 As shown, the first roller assembly 3 , the second roller assembly 4 and the third roller assembly 5 are constrained on the top of the support plate 21 by the limiting slot 24 .

[0036] In this embodiment, a driving motor 61 is fixed to both sides of the top of the support plate 21 through a connecting plate, and a threaded rod 62 is coaxially connected to the output end of the driving motor 61. A matching block 311 is fixed to one side of the first holder A31 close to the threaded rod 62, and the matching block 311 is threadedly connected to the threaded rod 62.

[0037] like Figure 2 , Figure 4 As shown, the matching block 311 is threadedly connected to the threaded rod 62, thereby, the position of the first clamping seat A31 can be moved by driving the motor 61, thereby moving the first roller assembly 3.

[0038] In this embodiment, a first circular hole 412 is formed on the first fixing block 411 , and a second circular hole 512 is formed on the second fixing block 511 . The diameter of the second circular hole 512 is greater than that of the first circular hole 412 , and the threaded rod 62 is inserted into the first circular hole 412 and the second circular hole 512 .

[0039] like Figure 5 As shown, the side wall of the threaded rod 62 away from the driving motor 61 is a smooth rod, and the smooth rod is inserted into the first circular hole 412 and the second circular hole 512. At this time, the positions of the first fixed block 411 and the second fixed block 511 will not interfere with the threaded rod 62, so that the threaded rod 62 can move with the first roller assembly 3.

[0040] In this embodiment, a first baffle 63 is fixed to the side wall of the threaded rod 62 near the second clamping seat A41. The first baffle 63 is located on the side of the second clamping seat A41 away from the driving motor 61. A first tension spring 631 is provided between the first baffle 63 and the second clamping seat A41 and is sleeved on the threaded rod 62.

[0041] A second baffle 64 is fixed to the side wall of the threaded rod 62 near the third clamping seat A51. The second baffle 64 is located on the side of the third clamping seat A51 away from the driving motor 61. A second tension spring 641 is provided between the second baffle 64 and the third clamping seat A51 and is sleeved on the threaded rod 62.

[0042] Among them, the diameter of the second circular hole 512 is larger than the second diameter of the first baffle 63, so that the first baffle 63 can pass through the second circular hole 512. This structure prevents the first baffle 63 from blocking the movement of the second fixed block 511, allowing the third card holder A51 to move.

[0043] The diameter of the second tension spring 641 is greater than the diameter of the first tension spring 631 , and the second tension spring 641 can be sleeved on the outside of the first tension spring 631 .

[0044] When the first tension spring 631 and the second tension spring 641 are selected, the elastic potential energy of the first tension spring 631 is much smaller than the elastic potential energy of the second tension spring 641. Figure 7 As shown, during the movement of the first roller assembly 3 with the second roller assembly 4, the first tension spring 631 is stretched, but at this time, since the elastic potential energy of the first tension spring 631 is much smaller than the elastic potential energy of the second tension spring 641, the second roller assembly 4 cannot move with the third roller assembly 5. When the second clamping rod 421 is attached to the second clamping block 513, if the second roller assembly 4 continues to move, the second roller assembly 4 can move with the third roller assembly 5.

[0045] When the first roller assembly 3, the second roller assembly 4 and the third roller assembly 5 need to be reset, the driving motor 61 moves the first roller assembly 3 away from the center of the film. Since the elastic potential energy of the first tension spring 631 is much smaller than the elastic potential energy of the second tension spring 641, the third roller assembly 5 completes the reset process first under the action of the second tension spring 641, and the second clamping rod 421 separates from the second clamping block 513. At this time, the second roller assembly 4 is reset under the action of the first tension spring 631, and the first clamping rod 321 separates from the first clamping block 413. At this time, the first roller assembly 3 is reset. This structure can reset the third roller assembly 5, the second roller assembly 4 and the first roller assembly 3 in sequence, so that every two adjacent roller assemblies will not act on the film at the same time, reducing the probability of deformation of the film due to excessive external force.

[0046] Working principle: When using the plastic extrusion wire drawing machine for producing plastic packaging bags, if the film has obvious corrugations or even folds together during the conveying process, at this time, open the drive motor 61 on this side and drive the threaded rod 62 to rotate through the drive motor 61. At this time, under the cooperation of the threaded rod 62 and the matching block 311, the first roller assembly 3 can be driven to move toward a position close to the center of the film. During the movement of the first roller assembly 3, the first clamping rod 321 will be attached to the first clamping block 413. At this time, the first roller assembly 3 continues to move to drive the second roller assembly 4 to move. During the movement of the second roller assembly 4, the second clamping rod 421 will be attached to the second clamping block 513. At this time, the second roller assembly 4 continues to move to drive the third roller assembly 5 to move. In this process, the first roller assembly 3 can stay at a place with obvious corrugations or folds, and then the first roller assembly 3, the second roller assembly 4 and the third roller assembly 5 are lifted by lifting the support plate 21, so that the first roller member 33, the second roller member 43 and the third roller member 53 act on the film.

[0047] After processing the film that has corrugated or folded together, move the support plate 21 downward to separate the first roller member 33, the second roller member 43 and the third roller member 53 from the film, then turn on the drive motor 61 to reverse and move the first roller assembly 3 away from the center of the film. At this time, under the action of the second tension spring 641 and the first tension spring 631, the third roller assembly 5, the second roller assembly 4 and the first roller assembly 3 are reset in sequence.

[0048] 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 plastic extrusion wire drawing machine for producing plastic packaging bags, comprising two bases (101) and a rotating roller (111) and a rotating drum (112) arranged on the bases (101), characterized in that: A U-shaped seat (103) is fixed between the two bases (101); a support plate (21) movable up and down is arranged on the top of the U-shaped seat (103); a first roller assembly (3), a second roller assembly (4) and a third roller assembly (5) are arranged on both sides of the top of the support plate (21); The first roller assembly (3) comprises a first clamping seat A (31), a first clamping seat B (32) and a first roller member (33); a first clamping rod (321) is provided on one side of the first clamping seat B (32); The second roller assembly (4) comprises a second clamping seat A (41), a second clamping seat B (42) and a second roller member (43); the second clamping seat A (41) is fixed with a first clamping block (413) via a first fixing block (411); the first clamping block (413) acts on a first clamping rod (321); and a second clamping rod (421) is provided on one side of the second clamping seat B (42); The third roller assembly (5) comprises a third clamping seat A (51), a third clamping seat B (52) and a third roller member (53); the third clamping seat A (51) is fixed with a second clamping block (513) via a second fixing block (511); the second clamping block (513) acts on a second clamping rod (421).

2. The plastic extrusion wire drawing machine for producing plastic packaging bags according to claim 1, characterized in that: A square cutout (102) is provided on each of the two bases (101), and the support plate (21) is located in the square cutout (102).

3. The plastic extrusion wire drawing machine for producing plastic packaging bags according to claim 1, characterized in that: The rotating roller (111) and the rotating drum (112) are rotatably connected to the base (101) via a roller holder (105); a ceramic knife (113) is fixed to the side wall of the rotating drum (112); the length of the ceramic knife (113) near the center of the rotating drum (112) is longer than the length of the ceramic knife (113) far from the center of the rotating drum (112).

4. The plastic extrusion wire drawing machine for producing plastic packaging bags according to claim 1, characterized in that: Lifting limit blocks (22) are fixed on both side walls of the support plate (21), and limiting grooves (104) are provided on both side walls of the U-shaped seat (103), wherein the lifting limit blocks (22) are located in the limiting grooves (104).

5. The plastic extrusion wire drawing machine for producing plastic packaging bags according to claim 1, characterized in that: Sliding limit blocks (23) are provided on both sides of the top of the support plate (21), and a limit slot (24) is provided through the top of the sliding limit block (23).

6. A plastic extrusion wire drawing machine for producing plastic packaging bags according to claim 5, characterized in that: A driving motor (61) is fixed to both sides of the top of the support plate (21) via a connecting plate, and a threaded rod (62) is coaxially connected to the output end of the driving motor (61). A matching block (311) is fixed to one side of the first holder A (31) close to the threaded rod (62), and the matching block (311) is threadedly connected to the threaded rod (62).

7. A plastic extrusion wire drawing machine for producing plastic packaging bags according to claim 6, characterized in that: The first fixing block (411) is provided with a first circular hole (412), the second fixing block (511) is provided with a second circular hole (512), the diameter of the second circular hole (512) is greater than the diameter of the first circular hole (412), and the threaded rod (62) is inserted into the first circular hole (412) and the second circular hole (512).

8. The plastic extrusion wire drawing machine for producing plastic packaging bags according to claim 7, characterized in that: The first card holder A (31), the second card holder A (41) and the third card holder A (51) are located in one of the limiting card slots (24), and the first card holder B (32), the second card holder B (42) and the third card holder B (52) are located in the other limiting card slot (24).

9. A plastic extrusion wire drawing machine for producing plastic packaging bags according to claim 8, characterized in that: A first baffle (63) is fixed to a side wall of the threaded rod (62) near the second clamping seat A (41); the first baffle (63) is located on a side of the second clamping seat A (41) away from the drive motor (61); and a first tension spring (631) sleeved on the threaded rod (62) is provided between the first baffle (63) and the second clamping seat A (41).

10. The plastic extrusion wire drawing machine for producing plastic packaging bags according to claim 8, characterized in that: A second baffle (64) is fixed to a side wall of the threaded rod (62) near the third clamping seat A (51); the second baffle (64) is located on a side of the third clamping seat A (51) away from the drive motor (61); and a second tension spring (641) sleeved on the threaded rod (62) is provided between the second baffle (64) and the third clamping seat A (51).

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