A heat seal cutting machine for vest pockets

Abstract

The utility model provides a kind of heat sealing cutting machine of vest bag applied to packaging bag cutting field, specifically includes first roller feeding device;Second roller feeding device, with the same conveying direction of second roller feeding device, product sequentially passes the first roller feeding device and the second roller feeding device common conveying;Support flat plate, surface is smooth and be set between the first roller feeding device and the second roller feeding device. By cylinder A drive pressure block down, align the heat sealing area of product and exert pressure, to eliminate the fine wrinkle in heat sealing area, make product heat sealing area keep flat and adhere to state;Meanwhile, according to the conveying rate of first roller feeding device and second roller feeding device, the time required for product from pre-pressing position to move to heat sealing cutting position is calculated, and then the action time of cylinder A in pre-pressing device is determined, so that when cylinder A drive pressure plate drives pressure block to press down, the area of flattening is exactly the cutting position of subsequent heat sealing cutter device.

Description

Technical Field

[0001] This invention relates to the field of packaging bag cutting technology, and in particular to a heat-sealing and cutting machine for vest bags. Background Technology

[0002] Existing vest bags are all made of biodegradable materials, thus replacing traditional plastic bags. Due to their environmental protection characteristics, they have been widely replaced by traditional plastic bags. However, biodegradable plastic films have low toughness and their surfaces are prone to wrinkles due to uneven conveying tension.

[0003] Especially in the area corresponding to the heat-sealing line on both sides of the vest bag, if there are wrinkles in the heat-sealing line area, direct heat-sealing and cutting will result in poor heat sealing and failure of the seal.

[0004] In summary, existing heat-sealing and cutting equipment lacks a targeted pre-compression structure, making it difficult to eliminate fine wrinkles in the heat-sealing line area. Utility Model Content

[0005] The purpose of this invention is to provide a heat-sealing and cutting machine for vest bags to solve the technical problem that existing technologies cannot eliminate the fine wrinkles in the heat-sealing line area.

[0006] To solve the above-mentioned technical problems, the present invention specifically provides the following technical solution: A heat-sealing and cutting machine for vest bags, comprising: First roller conveyor; The second roller conveyor has the same conveying direction as the first roller conveyor and the second roller conveyor, and the products are conveyed together by the first roller conveyor and the second roller conveyor in sequence. A support plate, with a smooth and flat surface, is positioned between the first roller conveyor and the second roller conveyor, and the product is conveyed over the surface of the support plate. A heat-sealing cutter device is disposed on the support plate, and the heat-sealing cutter device is used to heat-seal and cut the product on the support plate. A pre-pressing device is installed on the support plate and located upstream of the heat-sealing cutter device in the conveying direction. The pre-pressing device includes a cylinder A and a pressure plate. The pressure plate is connected to the actuating end of the cylinder A. At least one pressure block is provided on the surface of the pressure plate facing the support plate. The length direction of the pressure block is arranged along the heat-sealing cutting direction. The pressure block flattens the position of the product to be cut by hot air on the support plate under the action of the cylinder A.

[0007] Furthermore, the top surface of the supporting plate is flush with the top surface of the conveying rollers in the first and second roller conveying devices. The supporting plate is made of stainless steel; The length of the supporting plate is greater than the sum of the length of the pressure plate in the pre-pressing device along the product conveying direction and the length of the mounting seat in the heat-sealing cutter device along the product conveying direction.

[0008] Furthermore, the heat-sealing cutter device is located downstream of the pre-compression device in the conveying direction. The heat-sealing cutter device includes a cylinder B, a mounting base, and a heat-sealing cutter body. The mounting base is connected to the actuating end of the cylinder B. At least one heat-sealing cutter body is provided on the surface of the mounting base facing the support plate. The length direction of the heat-sealing cutter body is arranged along the heat-sealing cutting direction. Under the action of the cylinder B, the heat-sealing cutter body performs heat-sealing cutting on the position of the product on the support plate to be cut by hot air.

[0009] Furthermore, both the pressure block and the heat-sealing cutter body are configured as two sets; Both sets of pressure blocks and the two sets of heat-sealing cutter bodies are arranged at intervals along the product conveying direction; The distance between the two sets of pressure blocks and the two sets of heat-sealing cutter bodies is equal to the length of a single vest bag.

[0010] Compared with the prior art, the present invention has the following advantages: This invention uses cylinder A to drive the pressure plate downward, which in turn moves the pressure block to apply pressure to the heat-sealing area of ​​the product. This eliminates minor wrinkles in the heat-sealing area, keeping the heat-sealing area of ​​the product flat and in good contact, which facilitates subsequent heat-sealing and cutting. Attached Figure Description

[0011] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the axonal structure of this application; Figure 2 This is a schematic diagram of the top-view cross-section of the structure of this application.

[0013] The labels in the diagram represent the following: 10. First roller conveyor; 11. Second roller conveyor; 20. Support plate; 30. Heat sealing cutter device; 31. Cylinder B; 32. Mounting base; 33. Heat sealing cutter body; 40. Pre-pressing device; 41. Cylinder A; 42. Pressure plate; 43. Pressure block. Detailed Implementation

[0014] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0015] like Figures 1-2 As shown, this utility model provides a heat-sealing and cutting machine for vest bags.

[0016] Specifically, it includes a first roller conveyor 10, a second roller conveyor 11, a support plate 20, a heat sealing and cutting device 30, and a pre-pressing device 40. The components work together to achieve integrated operation of product conveying, pre-pressing, and heat sealing and cutting.

[0017] The first roller conveyor 10 and the second roller conveyor 11 are arranged in parallel along the same conveying direction, and their conveying speeds can be adjusted synchronously to ensure that the product can smoothly transition to the second roller conveyor 11 after being output from the first roller conveyor 10, thus achieving continuous and uninterrupted conveying.

[0018] The support plate 20 is horizontally positioned between the two sets of roller conveyors. Its surface is polished to ensure flatness and smoothness, providing a stable support surface for product conveying and preventing product deformation due to uneven support surface during movement.

[0019] The heat-sealing and cutting device 30 is fixed to the frame above the support plate 20 by bolts, and can perform heat sealing and cutting operations simultaneously on the products passing on the support plate 20.

[0020] The pre-pressing device 40 is also installed on the frame above the support plate 20 and is located upstream of the heat sealing cutter device 30 in the conveying direction. The device consists of a cylinder A41, a pressure plate 42 and at least one pressure block 43. The pressure plate 42 is rigidly connected to the end of the piston rod of the cylinder A41 through a connector. The pressure block 43 is made of high temperature resistant elastic material, and its length direction is consistent with the transverse direction of heat sealing and cutting. When the cylinder A41 receives an action signal, the piston rod extends downward, driving the pressure plate 42 and the pressure block 43 to press down synchronously, applying uniform pressure to the area of ​​the product to be heat sealed and cut, and achieving flattening of the area. In the practical application of existing vest bag heat-sealing and cutting equipment, two major technical problems are often encountered: During product transportation, there is a tendency for left-right or front-back movement, which can cause the subsequent heat-sealing and cutting positions to deviate from the preset dimensions.

[0021] The product is prone to wrinkles at the heat-sealing and cutting position due to the wrinkles of the raw material roll itself or friction during the conveying process. If heat-sealing and cutting are carried out directly, air bubbles will be present at the sealing point, and defects such as burrs and breakage will easily occur. To address the aforementioned issues, this embodiment utilizes two sets of synchronously operating roller conveying devices to form a stable conveying path. Combined with the flat support of the supporting plate 20, this ensures that the product maintains a preset posture throughout the conveying process, effectively limiting its lateral and longitudinal displacement.

[0022] To address the issue of wrinkles at the sealing and cutting location, a pre-pressing device 40 is installed upstream of the heat-sealing and cutting device 30. This allows the product to be pressed down by the pressure block 43 before entering the heat-sealing and cutting process, thus eliminating wrinkles and providing a smooth working foundation for heat-sealing and cutting.

[0023] To further improve the long-term operational stability and service life of the equipment, the support plate 20 is optimized in this embodiment.

[0024] First, the top surface height of the supporting plate 20 is completely flush with the top surface height of the conveying rollers in the first roller conveying device 10 and the second roller conveying device 11. This design eliminates the height difference of the product during the transition between the two sets of roller conveying devices and the supporting plate 20, avoiding product jamming, accumulation or position shift due to sudden height changes, and ensuring the smoothness of the conveying process.

[0025] Secondly, the support plate 20 is made of 304 stainless steel, which can withstand the local high temperature conducted by the heat-sealing cutter device 30 during operation, thus preventing material deformation.

[0026] Finally, the pressure plate 42 of the pre-pressing device 40 and the mounting base 32 of the heat-sealing cutter device 30 are arranged sequentially above the support plate 20 along the product conveying direction. To ensure that the support plate 20 can continuously provide a flat support surface for the area of ​​the product to be flattened and heat-sealed, the length of the support plate 20 is greater than the sum of the length of the pressure plate 42 of the pre-pressing device 40 and the length of the mounting base 32 of the heat-sealing cutter device 30, so as to ensure that the flattening action of the pressure plate 42 and the cutting action of the heat-sealing cutter under the mounting base 32 can be completed within the effective support range of the support plate 20. To improve the quality of heat sealing and cutting, the structure of the heat sealing and cutting device 30 was refined.

[0027] Downstream of the pre-compression device 40 in the conveying direction, it ensures that the product can immediately enter the heat sealing and cutting stage after being pre-compressed and flattened, thus preventing wrinkles from forming again in the flattened area during the conveying process.

[0028] The heat-sealing cutter device 30 is specifically composed of a cylinder B31, a mounting base 32, and at least one heat-sealing cutter body 33. The end of its piston rod is rigidly connected to the mounting base 32, which can provide stable and controllable downward pressure to ensure that the heat-sealing cutter body 33 can be in close contact with the product surface.

[0029] To meet the needs of mass production, the number and layout of components in the pre-compression device 40 and the heat-sealing cutter device 30 have been optimized.

[0030] Specifically, the pressure block 43 in the pre-pressing device 40 and the heat sealing cutter body 33 in the heat sealing cutter device 30 are both set into two groups. The two groups of pressure blocks 43 are evenly spaced on the bottom surface of the pressure plate 42 along the product conveying direction, and the two groups of heat sealing cutter bodies 33 are correspondingly spaced on the bottom surface of the mounting base 32 in the same direction.

[0031] At the same time, the center distance between the two sets of pressure blocks 43 and the center distance between the two sets of heat-sealing cutter bodies 33 are both strictly equal to the length of a single vest bag.

[0032] This optimized design forms a dual-station operation structure. The pre-compression device 40 can simultaneously pre-compress and flatten the sealing and cutting positions of two adjacent vest bags, and the heat-sealing and cutting device 30 can simultaneously complete the heat-sealing and cutting operations of the two vest bags. The above embodiments are merely exemplary embodiments of this application and are not intended to limit this application. The scope of protection of this application is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to this application within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of this application.

Claims

1. A heat-sealing and cutting machine for vest bags, characterized in that, have: First roller conveyor (10); The second roller conveyor (11) has the same conveying direction as the first roller conveyor (10) and the second roller conveyor (11) in sequence, and the products are conveyed together. The support plate (20) has a smooth and flat surface and is positioned between the first roller conveyor (10) and the second roller conveyor (11). The product is conveyed through the surface of the support plate (20). A heat-sealing cutter device (30) is disposed on the support plate (20) and is used to heat-seal and cut the product on the support plate (20). A pre-pressing device (40) is installed on the support plate (20) and located upstream of the heat-sealing cutter device (30) in the conveying direction. The pre-pressing device (40) includes a cylinder A (41) and a pressure plate (42). The pressure plate (42) is connected to the actuating end of the cylinder A (41). At least one pressure block (43) is provided on the surface of the pressure plate (42) facing the support plate (20). The length direction of the pressure block (43) is arranged along the heat-sealing cutting direction. The pressure block (43) flattens the position of the product to be cut by hot air on the support plate (20) under the action of the cylinder A (41).

2. The heat-sealing and cutting machine for vest bags according to claim 1, characterized in that: The top surface of the supporting plate (20) is flush with the top surface of the conveying rollers in the first roller conveying device (10) and the second roller conveying device (11); The supporting plate (20) is made of stainless steel; The length of the supporting plate (20) is greater than the sum of the length of the pressure plate (42) in the pre-compression device (40) along the product conveying direction and the length of the mounting base (32) in the heat sealing cutter device (30) along the product conveying direction.

3. The heat-sealing and cutting machine for vest bags according to claim 1, characterized in that: The heat-sealing cutter device (30) is located downstream of the pre-compression device (40) in the conveying direction. The heat-sealing cutter device (30) includes a cylinder B (31), a mounting base (32), and a heat-sealing cutter body (33). The mounting base (32) is connected to the actuating end of the cylinder B (31). At least one heat-sealing cutter body (33) is provided on the surface of the mounting base (32) facing the support plate (20). The length direction of the heat-sealing cutter body (33) is arranged along the heat-sealing cutting direction. The heat-sealing cutter body (33) performs heat-sealing cutting on the position of the product to be cut by hot air on the support plate (20) under the action of the cylinder B (31).

4. The heat-sealing and cutting machine for vest bags according to claim 1, characterized in that: The pressure block (43) and the heat-sealing cutter body (33) are both configured in two sets; Both sets of pressure blocks (43) and the two sets of heat-sealing cutter bodies (33) are arranged at intervals along the product conveying direction; The distance between the two sets of pressure blocks (43) and the two sets of heat-sealing cutter bodies (33) is equal to the length of a single vest bag.

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