PE bag production raw material unwinding device

Abstract

The utility model discloses a PE bag production raw material unwinding device which comprises a frame body, and a containing frame is arranged at the tail of the frame body. A plurality of bag conveying rollers are sequentially arranged on the frame body in the bag outlet conveying direction. The cutting assembly is arranged at the head of the frame body and used for cutting the bag body; the limiting check blocks are arranged on the incoming material side of the material cutting assembly and symmetrically connected with the two sides of the frame body, the symmetrically-arranged limiting check blocks are adopted, incoming material bag bodies are blocked and limited within the length range of the bag conveying rotating rollers, the situation that the bag bodies deviate greatly is avoided, and therefore the cutting quality of the bag bodies is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of packaging consumables equipment, specifically relating to a PE bag production raw material unwinding device. Background Technology

[0002] PE antistatic packaging bags are a special type of packaging bag. They are made from low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE), antistatic masterbatch, color masterbatch, and stabilizers, which are mixed, blown into film, and then heat-sealed and cut. This material has a soft feel, and its thickness can be freely adjusted as needed. PE antistatic packaging bags have antistatic properties, effectively preventing the accumulation of static charge and protecting electronic products from damage caused by static electricity generated by friction between insulators. Its low surface resistivity is also a key indicator of its antistatic performance.

[0003] During the production of PE antistatic packaging bags, in order to facilitate the subsequent production of packaging bags of corresponding shapes, the packaging bag roll needs to be wound and received. Subsequently, as needed, it is cut into different lengths using an unwinding device.

[0004] Chinese patent document with application number CN202420174887.5PE discloses a raw material unwinding device for flat bag production, including a base plate, two support plates are provided on the top surface of the base plate, the bottom surfaces of the two support plates are fixedly connected to the top surface of the base plate, two thread rollers are provided on the top surface of the two support plates, the bottom surface of the thread rollers is fixedly connected to the top surface of the two support plates, and a limiting mechanism and a pressing mechanism are provided on the top surface of the two support plates. The limiting mechanism includes a fixing part and a limiting part, the limiting part being located on the inner side of the fixing part, and the pressing mechanism includes a pressing part and a driving part, the driving part being located on the top surface of the pressing part.

[0005] Further research by the applicant revealed that due to the limitations of its own structure, the technical solution is prone to deviation during the unwinding and conveying of the bag, resulting in unevenness and deviation during cutting, which affects the packaging quality of the PE bags and reduces work efficiency. Utility Model Content

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A PE bag production raw material unwinding device, comprising:

[0008] The frame has a storage rack at the rear.

[0009] Several bag-feeding rollers are sequentially arranged on the frame along the bag-out conveying direction.

[0010] A cutting assembly, located at the head of the frame, cuts the bag body;

[0011] A limiting stop is provided on the material receiving side of the cutting assembly and is symmetrically connected to both sides of the frame.

[0012] The bag feeding roller and the cutting assembly are provided in pairs, with an upper roller and a lower roller;

[0013] An adjustment structure is provided for moving at least one of the upper and / or lower rollers to bring the upper and lower rollers closer to or further apart from each other.

[0014] Furthermore, the adjustment structure includes a rotating component, mounting side plates symmetrically connected to both sides of the frame and rotatably connected to the upper and lower rotating rollers, with sliding blocks sleeved at both ends of the upper rotating roller, and a sliding groove provided on the mounting side plate to cooperate with the sliding block, the rotating component penetrating through the top of the mounting side plate and connected to the sliding block.

[0015] Furthermore, the cutting assembly includes a blade holder and a lower base plate that are slidably connected to the inner wall of the mounting side plate, and a blade body that cooperates with the lower base plate and acts on the bag body is mounted on the blade holder.

[0016] Furthermore, the cutting assembly also includes a top plate connected to the mounting side plate, and an extension member is connected to the upper end of the top plate. The free end of the extension member passes through the top and is connected to the blade holder.

[0017] Furthermore, the tool holder is provided with a lower pressure plate that cooperates with the lower base plate. The upper end of the lower pressure plate is provided with a plurality of guide rods that penetrate the tool holder along the length direction, and springs are sleeved on the outer periphery of the guide rods.

[0018] Furthermore, a bag receiving tray is connected to the head of the frame.

[0019] Furthermore, the frame is equipped with a motor and a control box for driving the lower rotating roller to rotate.

[0020] Compared with the prior art, this utility model has the following advantages:

[0021] Symmetrical limit blocks are used to block the incoming bag body, limiting it within the length range of the bag feeding rollers to prevent significant bag deviation and thus improve the cutting quality of the bag body. The upper and lower rollers can be adjusted by a regulating structure to change the gap between them, accommodating bags of different thicknesses and further reducing bag deviation. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram illustrating a specific embodiment of the present utility model;

[0023] Figure 2This is a schematic diagram illustrating the main structural features of a specific embodiment of the present utility model;

[0024] Figure 3 A partial structural schematic diagram illustrating a specific embodiment of this utility model (view 1);

[0025] Figure 4 A partial structural schematic diagram illustrating a specific embodiment of this utility model (perspective two);

[0026] Figure 5 This is a schematic diagram of a partial structure after removing the upper rotating roller in a specific embodiment of the present invention (viewpoint three);

[0027] The reference numerals in the accompanying drawings include:

[0028] Frame 1, Placement rack 10, Bag receiving tray 11, Motor 12, Control box 13, Bag feeding roller 2, Knife holder 30, Lower bottom plate 31, Knife body 32, Top plate 33, Telescopic component 34, Lower pressure plate 35, Spring 37, Bag body 4, Upper roller 50, Lower roller 51, Rotating component 60, Mounting side plate 61, Slide groove 62, Sliding block 63, Limit stop 7, Guide rail 8. Detailed Implementation

[0029] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0030] The accompanying drawings are for illustrative purposes only and represent schematic diagrams, not actual physical objects. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of this utility model, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. The same or similar reference numerals in the drawings of the embodiments of this utility model correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" appear, indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms describing positional relationships in the drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0031] like Figure 1 - Figure 5 As shown, the present invention provides a PE bag production raw material unwinding device, which includes a frame 1, a cutting assembly, and an adjustment structure.

[0032] Among them, a placement rack 10 is provided at the rear of the frame 1;

[0033] Several bag-feeding rollers 2 are sequentially arranged on the frame 1 along the bag-exit conveying direction; the unwinding path of the bag body 4 is as follows: Figure 1 As shown, multiple bag-feeding rollers 2 are alternately located on both sides of the bag body 4.

[0034] The cutting assembly is located at the head of the frame 1 and cuts the bag body 4;

[0035] The limit stop 7 is set on the material receiving side of the cutting assembly and is symmetrically connected to both sides of the frame 1;

[0036] Symmetrical limit blocks 7 are used to block the incoming bag body 4 and limit it within the length range of the bag feeding roller 2, so as to avoid large displacement of the bag body 4 and thus improve the cutting quality of the bag body 4.

[0037] An upper roller 50 and a lower roller 51 are paired between the bag feeding roller 2 and the cutting assembly;

[0038] An adjustment mechanism is provided for moving at least one of the upper roller 50 and / or the lower roller 51 to bring the upper roller 50 and the lower roller 51 closer to or further apart from each other.

[0039] The upper roller 50 and the lower roller 51 can change the gap between them under the action of the adjustment structure, thereby adjusting the gap between them to adapt to bags 4 of different thicknesses and further reduce the offset of the bag 4.

[0040] Specifically, such as Figure 3 , Figure 4 , Figure 5 As shown, the adjustment structure includes a rotating component 60 and mounting side plates 61 symmetrically connected to both sides of the frame 1 and rotatably connected to the upper rotating roller 50 and the lower rotating roller 51. Sliding blocks 63 are sleeved at both ends of the upper rotating roller 50. The mounting side plate 61 has a sliding groove 62 that cooperates with the sliding block 63. The rotating component 60 passes through the top of the mounting side plate 61 and is connected to the sliding block 63.

[0041] The bottom of the rotating component 60 has a threaded structure. By rotating the rotating component 60, the forward and reverse rotation can be controlled, thereby the sliding block 63 moves up or down in the slide groove 62, causing the upper rotating roller 50 to move vertically relative to the lower rotating roller 51.

[0042] like Figure 3 As shown, the cutting assembly includes a blade holder 30 and a lower base plate 31 that are slidably connected to the inner wall of the mounting side plate 61. A blade 32 that cooperates with the lower base plate 31 and acts on the bag body 4 is mounted on the blade holder 30.

[0043] The cutter body 32 is bolted and detachably connected to the cutter holder 30, allowing for periodic replacement of the cutter body 32. The cutter holder 30 can be connected to the mounting side plate 61 via guide rails 8 on both sides.

[0044] In addition, the cutting assembly also includes a top plate 33 connected to the mounting side plate 61, and a telescopic member 34 is connected to the upper end of the top plate 33. The free end of the telescopic member 34 passes through the top and is connected to the blade holder 30.

[0045] The telescopic component 34 can be a cylinder, which extends or retracts to drive the knife holder 30 and its knife body 32 to cut the bag body 4.

[0046] Furthermore, to prevent the bag body 4 from lifting up after cutting, which would affect the cutting effect of the blade 32, a lower pressure plate 35 is provided on the blade holder 30 to cooperate with the lower base plate 31. During the descent of the blade holder 30, the lower pressure plate 35 contacts the bag body 4 before the blade 32, pressing the bag body 4 firmly onto the lower base plate 31. Subsequently, as the blade holder 30 continues to descend, the bag body 4 is cut by the blade 32. This structural design plays an important role in the cutting effect of the bag body 4.

[0047] Specifically, such as Figure 5 As shown, the upper end of the lower pressure plate 35 is provided with several guide rods that penetrate the tool holder 30 along the length direction, and springs 37 are sleeved on the outer periphery of the guide rods.

[0048] A bag receiving tray 11 is connected to the head of the frame 1. The cut bags 4 can be loaded into the bag receiving tray 11 and then collected and transferred.

[0049] The frame 1 is equipped with a drive roller 51 to rotate, a motor 12, and a control box 13. The arrangement and connection of the motor 12 and the control box 13 can use existing technology and are easy to implement, and are not within the protection scope of this application. Therefore, they at least have the beneficial effects brought by the technical solutions of the above embodiments, and will not be described in detail here.

[0050] The above are merely embodiments of this utility model. Commonly known structures and characteristics are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field prior to the application date or priority date, are aware of all existing technologies in that field, and have the ability to apply conventional experimental methods prior to that date. Those skilled in the art can, based on the guidance provided in this application, improve and implement this solution in combination with their own capabilities. Some typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model. These should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent.

Claims

1. A device for unwinding raw materials for PE bag production, characterized in that, include: The frame (1) has a placement rack (10) at the rear; Several bag-feeding rollers (2) are sequentially arranged on the frame (1) along the bag-out conveying direction; A cutting assembly is installed at the head of the frame (1) to cut the bag body (4); The limiting block (7) is set on the material receiving side of the cutting assembly and is symmetrically connected to both sides of the frame (1); The bag feeding roller (2) and the cutting assembly are provided with an upper roller (50) and a lower roller (51) in pairs; An adjustment mechanism is provided for moving at least one of the upper roller (50) and / or the lower roller (51) to bring the upper roller (50) and the lower roller (51) closer to or further away from each other.

2. The PE bag production raw material unwinding device as described in claim 1, characterized in that: The adjustment structure includes a rotating component (60), a mounting side plate (61) symmetrically connected to both sides of the frame (1) and rotatably connected to the upper rotating roller (50) and the lower rotating roller (51), a sliding block (63) sleeved at both ends of the upper rotating roller (50), a sliding groove (62) that cooperates with the sliding block (63) on the mounting side plate (61), and the rotating component (60) passing through the top of the mounting side plate (61) and connected to the sliding block (63).

3. The PE bag production raw material unwinding device as described in claim 2, characterized in that: The cutting assembly includes a blade holder (30) slidably connected to the inner wall of the mounting side plate (61) and a bottom plate (31). The blade holder (30) is equipped with a blade body (32) that cooperates with the bottom plate (31) and acts on the bag body (4).

4. The PE bag production raw material unwinding device as described in claim 3, characterized in that: The cutting assembly also includes a top plate (33) connected to the mounting side plate (61), and a telescopic member (34) is connected to the upper end of the top plate (33). The free end of the telescopic member (34) passes through the top and is connected to the knife holder (30).

5. A PE bag production raw material unwinding device as described in claim 3 or 4, characterized in that: The tool holder (30) is provided with a lower pressure plate (35) that cooperates with the lower base plate (31). The upper end of the lower pressure plate (35) is provided with a number of guide rods that penetrate the tool holder (30) along the length direction. The guide rods are fitted with springs (37) on their outer periphery.

6. The PE bag production raw material unwinding device as described in claim 1, characterized in that: The head of the frame (1) is connected to a bag receiving tray (11).

7. The PE bag production raw material unwinding device as described in claim 1, characterized in that: The frame (1) is equipped with a drive roller (51) for rotation, a motor (12), and a control box (13).

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