Cutting device for plastic bag production

Abstract

The utility model discloses a cutting device for plastic bag production, which belongs to the field of plastic bag production and comprises a conveying table. Four supporting columns are assembled on the upper end face of the conveying table in a rectangular mode, and a bearing plate is jointly arranged on the four supporting columns in a bearing mode. A cutting assembly is arranged on the bearing plate in a bearing mode. Two limiting assemblies are assembled on the upper end face of the conveying table. According to the cutting device for plastic bag production, the plastic bag body is elastically pressed downwards through the rotating shaft, so that a plastic bag can be smoother during conveying, plastic bag raw materials are elastically pressed to be flat through the elastic pressing assembly, the plastic bag materials can be effectively prevented from being turned over, folded or moved, more accurate cutting is achieved, and the production efficiency is improved. And meanwhile, by means of elastic downward pressing of the two limiting assemblies, it can be ensured that plastic bag raw materials of different thicknesses can be flattened and limited on the conveying table, and therefore it is ensured that the plastic bag raw materials of different thicknesses are flatly and stably conveyed.

Description

Technical Field

[0001] This utility model belongs to the field of plastic bag production, and specifically relates to a cutting device for plastic bag production. Background Technology

[0002] Plastic bags generally refer to bag-shaped packaging materials made using adhesive or heat-sealing technology. These bags are commonly used for packaging food, medicine, cosmetics, chemicals, and daily necessities. Plastic bags can be made from different materials to meet various needs and uses, such as plastic bags and paper bags.

[0003] In actual production and use, plastic bags are sold in bundles. There are dotted lines between two bags that facilitate separation. Therefore, dotted cutting devices are often installed in the plastic bag production process to reduce errors caused by manual cutting and improve production efficiency. In current production, blades with toothed edges are often used as the cutting part of the dotted cutting device. When the blade is used, the protruding blade cuts the plastic bag to form uniform and regular dotted lines.

[0004] When plastic bags are being cut during production, traditional cutting devices often directly cut the raw plastic bag material. For example, a Chinese patent with patent number CN220923435U discloses a cutting device for plastic bag production. However, the cutting blade in this cited document lacks a flattening and limiting mechanism to prevent the plastic bag from being cut. Without this flattening and limiting mechanism, the plastic bag may become loose or shift, leading to inaccurate cutting positions or even deviations from the expected cutting line, affecting the quality and efficiency of the cutting. Furthermore, issues such as material rolling, folding, or shifting may occur, further impacting the consistency of the plastic bag cutting. Therefore, this paper proposes a cutting device for plastic bag production to address the problems identified in the cited document. Utility Model Content

[0005] In view of one or more of the above-mentioned defects or improvement needs of the prior art, the present invention provides a cutting device for plastic bag production, which has the advantages of being able to flatten and limit the plastic bag, and facilitating the flat cutting of the plastic bag.

[0006] To achieve the above objectives, this utility model provides a cutting device for plastic bag production, including a conveyor table;

[0007] The upper surface of the conveyor is rectangular and equipped with four support columns, which together support a support plate; the support plate supports a cutting component.

[0008] Two sets of limiting components are assembled on the upper surface of the conveyor platform.

[0009] The limiting component includes a limiting seat disposed on the conveyor platform, a limiting post vertically supported on the limiting seat, a slider seat slidably disposed outside the limiting post, and a connecting plate mounted on the side of the slider seat;

[0010] A connecting shaft is mounted on the opposite side of the two connecting plates;

[0011] The cutting assembly includes a blade holder that slides on a support plate, and a cutting blade is fitted inside the blade holder.

[0012] As a further improvement of this utility model, a sliding groove is provided on the tool holder, the cutting blade is slidably disposed in the sliding groove, and a tightening bolt is threadedly connected to the side of the tool holder, the end of the tightening bolt passing through the tool holder and abutting against the side of the cutting blade.

[0013] As a further improvement of this utility model, the cutting assembly also includes a guide rod cylinder mounted on the support plate, the output end of which passes through the support plate and is connected to the top of the tool holder.

[0014] As a further improvement of this utility model, the limiting component also includes a compression spring sleeved on the outside of the limiting post, the top end of the compression spring being connected to the limiting seat, and its bottom end abutting against the slider seat.

[0015] As a further improvement of this utility model, two deep groove ball bearings are provided on the outside of the connecting shaft with a filling fit, and a rotating shaft is rotatably assembled on the outside of the two deep groove ball bearings; two smooth rods are also provided on the limiting seat, and the two smooth rods pass through the adjacent slider seat.

[0016] In summary, the beneficial effects of the above-described technical solutions conceived by this utility model compared with the prior art include:

[0017] This utility model discloses a cutting device for plastic bag production. In actual use, through the elastic connection between the compression spring and the rotating shaft, the plastic bag body passes through the rotating shaft, and the rotating shaft elastically presses down on the plastic bag body, making the plastic bag flatter during conveying. The elastic pressing component effectively prevents the plastic bag material from rolling, folding, or moving, thereby achieving more accurate cutting and helping to ensure the precision and consistency of the cutting line. At the same time, the elastic pressing of the two sets of limiting components ensures that plastic bag materials of different thicknesses can be flattened and limited on the conveyor table, thereby ensuring the flat and stable transmission of plastic bag materials of different thicknesses.

[0018] This utility model discloses a cutting device for producing plastic bags. Through the sliding installation between the blade holder and the cutting blade, and the tight contact between the tightening bolt and the cutting blade, the cutting blade can be quickly disassembled on the blade holder. When the user needs to change different point-cutting intervals, the cutting blade can be quickly switched, thereby using different specifications of cutting blades to perform point-cutting on the plastic bags. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall installation structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the installation structure of the cutting component of this utility model on the carrier plate;

[0021] Figure 3 This is a schematic diagram of the installation structure of the rotating shaft and connecting shaft within the limiting component of this utility model;

[0022] Figure 4 This is a schematic diagram of the cutting blade installation structure inside the blade holder of this utility model.

[0023] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: 1. Conveyor table; 11. Support column; 12. Bearing plate; 2. Limiting assembly; 21. Limiting seat; 22. Limiting post; 23. Slider seat; 24. Connecting plate; 25. Smooth rod; 26. Compression spring; 27. Connecting shaft; 28. Rotating shaft; 3. Cutting assembly; 31. Guide rod cylinder; 32. Tool holder seat; 33. Slide groove; 34. Cutting blade; 35. Tightening bolt. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example

[0026] Depend on Figure 1-4 A cutting device for plastic bag production is provided, comprising a conveyor table 1;

[0027] The upper surface of the conveyor 1 is rectangular and equipped with four support columns 11, which together support a support plate 12; the support plate 12 supports a cutting component 3.

[0028] Two sets of limiting components 2 are installed on the upper surface of the conveyor 1;

[0029] The limiting component 2 includes a limiting seat 21 disposed on the conveyor table 1, a limiting post 22 vertically supported on the limiting seat 21, and a slider seat 23 slidably disposed outside the limiting post 22; a connecting plate 24 is installed on the side of the slider seat 23.

[0030] Two connecting plates 24 are mounted on opposite sides with connecting shafts 27;

[0031] The cutting assembly 3 includes a blade holder 32 that slides on the support plate 12, and a cutting blade 34 is fitted inside the blade holder 32.

[0032] In this embodiment, during actual use, after the plastic bag body passes through the rotating shaft 28, the compression springs 26 in the two sets of limiting components 2 can be reset and rebound until the compression springs 26 press down on the slider seat 23. At this time, the rotating shaft 28 on the sides of the two slider seats 23 can be elastically pressed down until it contacts the plastic bag body. The elastic pressing of the plastic bag body by the rotating shaft 28 makes the plastic bag flatter during conveying. The elastic pressing component can effectively prevent the plastic bag material from rolling, folding or moving, thereby achieving more accurate cutting and helping to ensure the accuracy and consistency of the cutting line. At the same time, the elastic pressing of the two sets of limiting components 2 can ensure that plastic bag materials of different thicknesses can be flattened and limited on the conveyor table 1, thereby ensuring the flat and stable transmission of plastic bag materials of different thicknesses.

[0033] Specifically, refer to Figure 1 and Figure 4 The tool holder 32 has a sliding groove 33, and the cutting blade 34 is slidably disposed in the sliding groove 33. The side of the tool holder 32 is threaded with a tightening bolt 35, the end of the tightening bolt 35 passing through the tool holder 32 and abutting against the side of the cutting blade 34.

[0034] In this embodiment, considering that different spacing of dot breaks in the plastic bag requires different specifications of cutting blades 34 for cutting under different needs, in a preferred embodiment, the sliding installation between the blade holder 32 and the cutting blade 34, combined with the tight abutment between the tightening bolt 35 and the cutting blade 34, allows the cutting blade 34 to be quickly disassembled on the blade holder 32. When the user needs to change different dot breaks, the cutting blade 34 can be quickly switched, thereby using different specifications of cutting blades 34 to dot breaks in the plastic bag.

[0035] Specifically, refer to Figures 1-2 The cutting assembly 3 also includes a guide rod cylinder 31 mounted on the support plate 12. The output end of the guide rod cylinder 31 passes through the support plate 12 and is connected to the top of the tool holder 32.

[0036] In this embodiment, after the plastic bag body passes through the rotating shaft 28, the user can connect the guide rod cylinder 31 to an external air source. At this time, the guide rod cylinder 31 can drive its output end to press down until the guide rod cylinder 31 drives the knife holder 32 to press down. At this time, through the connection and installation of the knife holder 32 and the cutting blade 34, the cutting blade 34 can press down and realize the cutting operation of the plastic bag body.

[0037] Specifically, refer to Figure 1-3 The limiting component 2 also includes a compression spring 26 sleeved on the outside of the limiting post 22. The top end of the compression spring 26 is connected to the limiting seat 21, and its bottom end abuts against the slider seat 23.

[0038] In this embodiment, in actual use, after the plastic bag body passes through the rotating shaft 28, the compression springs 26 in the two sets of limiting components 2 can be reset and rebound until the compression springs 26 press down on the slider seat 23. At this time, the rotating shaft 28 set on the side of the two slider seats 23 can be elastically pressed down until it contacts the plastic bag body. At the same time, the light rod 25 can be used to ensure that the slider seat 23 is more stable when it moves vertically and avoids it from flipping over.

[0039] Specifically, refer to Figure 3 The connecting shaft 27 is externally fitted with two deep groove ball bearings, and the two deep groove ball bearings are externally mounted with a rotating shaft 28; the limiting seat 21 is also provided with two smooth rods 25, and the two smooth rods 25 pass through the adjacent slider seat 23.

[0040] In this embodiment, in actual use, the rotating shaft 28 can rotate outside the connecting shaft 27, thereby reducing the friction between the rotating shaft 28 and the plastic bag when the rotating shaft 28 comes into contact with the plastic bag, thus reducing wear contact and allowing the plastic bag to be conveyed more smoothly on the conveyor table 1.

[0041] This utility model relates to a cutting device for plastic bag production:

[0042] Step 1: In actual use, when the user needs to cut the plastic bag material, the plastic bag material is placed on the conveyor table 1 and conveyed. At the same time, one end of the plastic bag material is stretched so that it passes through two sets of limiting components 2 and moves to the bottom of the cutting component 3 for cutting.

[0043] Step 2: When the user drives the plastic bag material through the limiting component 2, the user moves the rotating shaft 28 upward by turning it. The sliding between the slider seat 23 and the limiting post 22 causes the slider seat 23 to compress the compression spring 26. At this time, the distance between the bottom of the rotating shaft 28 and the conveyor 1 increases. Then the user can pass the end of the plastic bag material through the bottom of the rotating shaft 28 and then release the limiting of the rotating shaft 28. At this time, the compression spring 26 will return to its original position and rebound until the compression spring 26 presses down on the slider seat 23. At this time, the rotating shaft 28 on the sides of the two slider seats 23 can be elastically pressed down until it contacts the plastic bag body. The elastic pressing of the plastic bag body by the rotating shaft 28 makes the plastic bag more flat during the conveying.

[0044] Step 3: After the plastic bag body passes through the rotating shaft 28, the user can connect the guide rod cylinder 31 to an external air source. At this time, the guide rod cylinder 31 can drive its output end to press down until the guide rod cylinder 31 drives the knife holder 32 to press down. At this time, through the connection and installation of the knife holder 32 and the cutting blade 34, the cutting blade 34 can press down and realize the cutting operation of the plastic bag body.

[0045] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cutting device for the production of sachets, comprising a conveyor table (1), characterized in that ； The upper end face of the conveying table (1) is provided with four supporting columns (11) in a rectangular assembly, and a bearing plate (12) is provided on the four supporting columns (11). Two groups of limiting assemblies (2) are assembled on the upper end face of the conveying table (1). The limiting assembly (2) comprises a limiting seat (21) provided on the conveying table (1), a limiting column (22) vertically supported on the limiting seat (21), and a sliding block seat (23) slidingly arranged outside the limiting column (22). Two connecting shafts (27) are installed on the opposite sides of the two connecting plates (24). The cutting assembly (3) comprises a cutter holder seat (32) sliding on the bearing plate (12), and a cutting blade (34) embedded in the cutter holder seat (32).

2. The cutting device for the production of sachets according to claim 1, characterized in that, A sliding groove (33) is formed in the cutter holder seat (32), the cutting blade (34) is slidingly arranged in the sliding groove (33), a tension bolt (35) is threadedly connected to the side surface of the cutter holder seat (32), and the end of the tension bolt (35) penetrates the cutter holder seat (32) and abuts against the side surface of the cutting blade (34).

3. The cutting device for the production of sachets according to claim 1, characterized in that, The cutting assembly (3) further comprises a guide rod air cylinder (31) assembled on the bearing plate (12), the output end of the guide rod air cylinder (31) penetrates the bearing plate (12) and is connected to the top of the cutter holder seat (32).

4. The cutting device for the production of a plastic bag according to claim 1, characterized in that, The limiting assembly (2) further comprises a compression spring (26) sleeved outside the limiting column (22), the top end of the compression spring (26) is connected to the limiting seat (21), and the bottom end of the compression spring (26) abuts against the sliding block seat (23).

5. The cutting device for the production of sachets according to claim 1, characterized in that, Two deep groove ball bearings are filled and matched outside the connecting shaft (27), and a rotating shaft (28) is rotatably assembled outside the two deep groove ball bearings. Two light rods (25) are further provided on the limiting seat (21), and the two light rods (25) both penetrate the sliding block seat (23) adjacent thereto.

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