Single-sided heat sealing mechanism for bag making machine film roll

Abstract

This utility model relates to the technical field of bag making machine equipment, and provides a single-sided heat sealing mechanism for a bag making machine film roll. It includes a base plate, with two symmetrically distributed support plates fixedly mounted on the top of the base plate. Two feeding rollers are arranged between the two support plates, and two heating rollers are rotatably connected between the two support plates. Each of the two heating rollers has a heating box at one end. In this utility model, after adjusting the two heating rollers to the optimal distance, the heating box and cooling device are activated. Two film substrates pass through the gap between the heating rollers, driving a long rod to apply pressure to the heating rollers, ensuring close contact between the two heated film substrates. After melting and bonding together, they are rapidly cooled by the cooling rollers. Therefore, when heat-sealing one side of a plastic film, this equipment can adjust the sealing according to the thickness of the film substrate, preventing insecure sealing and improving sealing quality and overall production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of bag making machine equipment technology, and in particular to a single-sided heat sealing mechanism for roll film in a bag making machine. Background Technology

[0002] A bag-making machine is a machine used to produce various plastic or other material packaging bags. Its processing range is wide, including packaging bags of various sizes and thicknesses made of plastic or other materials, with plastic packaging bags being the primary product. The single-side heat-sealing mechanism of a bag-making machine refers to the equipment structure that seals one edge of the film material using heat-sealing technology during the bag-making process. Its main function is to use heat and pressure to bond the two layers of film together through heat sealing, forming the side seal of the bag.

[0003] Although the current technology has many advantages, its disadvantages lie in the fact that when heat-sealing one side of the plastic film, it cannot adjust according to the thickness of the film substrate, resulting in an insecure seal, poor sealing quality, reduced overall production efficiency, and the tendency for the film to deviate from its original position when being rolled up after heat sealing, which is very inconvenient. Utility Model Content

[0004] The purpose of this invention is to solve the problem that in the existing technology, when the equipment heat-seales one side of the plastic film, it cannot adjust according to the thickness of the film substrate, resulting in an unstable seal, poor sealing quality, reduced overall production efficiency, and the tendency for the film to deviate left or right during winding after heat sealing, which is very inconvenient.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a single-sided heat-sealing mechanism for a bag-making machine: including a base plate, two symmetrically distributed support plates fixedly installed on the top of the base plate, two feeding rollers arranged between the two support plates, two heating rollers rotatably connected between the two support plates, a heating box provided at one end of each of the two heating rollers, a support platform fixedly connected to the top of the base plate, a motor one fixedly installed on the top of the support platform, a transmission rod fixedly connected to the output end of the motor one, a long rod movably connected to one side of the outer surface of the transmission rod, one end of the long rod movably connected to the outer surface of one of the heating boxes, a motor two fixedly installed on one side of the outer surface of one of the support plates, and the output end of the motor two fixedly connected to the inside of the long rod.

[0006] In one preferred embodiment, a square through hole is provided inside one of the support plates, and one of the heating boxes is slidably connected inside the square through hole.

[0007] The technical advantage of adopting the above-mentioned further solution is that the heating box can fully preheat the heating roller through the internal heating element to ensure the heat sealing quality.

[0008] In a preferred embodiment, a heating wire is provided between the heating box and the heating roller.

[0009] The technical effect of adopting the above-mentioned further solution is that the two film substrates are heat-sealed immediately after passing through the distance between the heating rollers.

[0010] In a preferred embodiment, a take-up roller for film winding is rotatably connected between the two support plates, and two limiting blocks are movably sleeved on the outer surface of the take-up roller.

[0011] The technical effect of adopting the above-mentioned further solution is that the limiting block is adjusted to an appropriate position according to the width of the film, so that the wound film will not deviate to the left or right.

[0012] In a preferred embodiment, an electric telescopic rod is fixedly installed on the top of the base plate near the edge, and a connecting plate is fixedly connected to the output end of the electric telescopic rod.

[0013] The technical effect of adopting the above-mentioned further solution is that the electric telescopic rod provides stable and continuous output power, drives the connecting plate, and drives the two adjusting rods to rotate.

[0014] In a preferred embodiment, the top of the connecting plate is movably connected to two adjusting rods, and the other ends of the two adjusting rods are movably connected to the bottom of the limiting block.

[0015] The technical effect of adopting the above-mentioned further solution is that the two adjusting rods drive the limiting block to slide on the outer surface of the take-up roller, thereby assisting the limiting block in achieving the limiting effect.

[0016] In a preferred embodiment, a cooling roller is provided on the right side of the take-up roller, and a cooling device is provided at one end of the cooling roller.

[0017] The technical effect of adopting the above-mentioned further solution is that when the heat-sealed film passes through the cooling roller, it is rapidly cooled by the cooling device, thereby improving the cooling efficiency after heat sealing.

[0018] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0019] 1. In this utility model, after adjusting the two heating rollers to the optimal distance, the heating box and cooling device are started. The two film substrates pass through the gap between the heating rollers, and the driving rod drives the heating rollers to apply pressure, ensuring that the two heated film substrates are in close contact. After melting and bonding together, they are quickly cooled by the cooling rollers. Thus, when heat-sealing one side of the plastic film, the equipment can be adjusted according to the thickness of the film substrate, and there will be no situation of weak sealing, which improves the sealing quality and overall production efficiency.

[0020] 2. With this utility model, the operator can use the controller to start the electric telescopic rod fixedly installed on the top of the base plate, so that its output end pushes the adjusting rod horizontally, causing the two adjusting rods on the top of the adjusting rod to rotate horizontally, thereby driving the two limiting blocks to slide on the outer surface of the winding roller. Adjust to the appropriate position according to the width of the film, so that when the heat-sealed film passes through the cooling roller, it is wound up by the winding roller. Therefore, there will be no left or right deviation when winding after heat sealing, which is very convenient. Attached Figure Description

[0021] Figure 1 A schematic diagram of the main structure of the single-sided heat sealing mechanism for the bag making machine provided by this utility model;

[0022] Figure 2 A side view of the single-sided heat sealing mechanism for the film roll of the bag making machine provided by this utility model;

[0023] Figure 3 A schematic diagram of the adjustment structure of the single-sided heat sealing mechanism for the film roll of the bag making machine provided by this utility model;

[0024] Figure 4 This is a top view of the single-sided heat sealing mechanism for the film roll of the bag making machine provided by this utility model.

[0025] Legend:

[0026] 1. Base plate; 101. Support plate; 102. Feed roller; 103. Heating roller; 104. Heating box; 105. Support platform; 106. Motor 1; 107. Motor 2; 108. Transmission rod; 109. Long rod; 2. Electric telescopic rod; 201. Connecting plate; 202. Adjusting rod; 203. Limiting block; 204. Take-up roller; 3. Cooling roller; 301. Cooling device. Detailed Implementation

[0027] 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.

[0028] Example 1:

[0029] Please see Figures 1-4 This utility model provides a technical solution: a single-sided heat sealing mechanism for a bag making machine, including a base plate 1, two symmetrically distributed support plates 101 fixedly installed on the top of the base plate 1, two feeding rollers 102 arranged between the two support plates 101, two heating rollers 103 rotatably connected between the two support plates 101, and heating wires arranged between the two heating rollers 103 and the heating box 104, which can reach the temperature required for heat sealing and apply a certain pressure to ensure that the two layers of the heated film material are in close contact and are melted and bonded together.

[0030] Please see Figures 1-4 Each of the two heating rollers 103 is equipped with a heating box 104 at one end. The heating box 104 is a conventional commercially available product that can fully heat the two heating rollers 103 through heating wires. It will not be described in detail here.

[0031] Please see Figures 1-4 A support platform 105 is fixedly connected to the top of the base plate 1. A motor 106 is fixedly installed on the top of the support platform 105. A transmission rod 108 is fixedly connected to the output end of the motor 106. The motor 106 can stably and continuously output power to drive the transmission rod 108 to rotate. It can be started by a controller.

[0032] Please see Figures 1-4 A long rod 109 is movably connected to one side of the outer surface of the transmission rod 108. One end of the long rod 109 is movably connected to the outer surface of one of the heating boxes 104. A second motor 107 is fixedly installed on one side of the outer surface of one of the support plates 101. The second motor 107 is a micro servo motor that can be started by a controller to drive the long rod 109 for adjustment. The output end of the second motor 107 is fixedly connected to the inside of the long rod 109.

[0033] In this embodiment, when heat sealing one side of the plastic film is required, the operator can adjust the distance between the two heating rollers 103 according to the thickness of the film substrate. First, the controller starts motor 106, ensuring its output is stably powered, driving the transmission rod 108 to rotate. After the initial adjustment, the controller starts motor 107, which also stably powers the long rod 109, causing the heating box 104 to slide up and down through the square through-hole inside the support plate 101. This operation adjusts the distance between the two heating rollers 103 to the optimal distance for heat sealing the plastic film. After adjustment, the heating box 104 and the cooling device 301 are started respectively. After passing through the outer surface of the feeding roller 102, the two film substrates pass through the gap between the heating rollers 103. At this time, the heating rollers 103 have been fully preheated by the heating wires of the heating box 104, which can heat seal the two film substrates. Then, the motor 107 drives the long rod 109 to drive the heating rollers 103 to apply a certain pressure, ensuring that the two heated film substrates are in close contact and are melted and bonded together. Then, they pass through the cooling roller 3 and are quickly cooled by the cooling device 301, which improves the cooling efficiency after heat sealing. Thus, when the equipment heat seals one side of the plastic film, it can adjust according to the thickness of the film substrate, and there will be no situation where the seal is not firm, which improves the sealing quality and overall production efficiency.

[0034] Example 2:

[0035] like Figures 1-4 As shown, one of the support plates 101 has a square through hole inside, and one of the heating boxes 104 is slidably connected inside the square through hole. A heating wire is provided between the heating box 104 and the heating roller 103. A take-up roller 204 for film winding is rotatably connected between the two support plates 101. Two limiting blocks 203 are movably sleeved on the outer surface of the take-up roller 204. An electric telescopic rod 2 is fixedly installed on the top of the base plate 1 near the edge. The electric telescopic rod 2 is fixedly installed on the top of 1 and can be started by a controller to stably and horizontally push the connecting plate 201, thereby assisting the subsequent limiting blocks 203 to complete the limiting effect.

[0036] like Figures 1-4 As shown, the output end of the electric telescopic rod 2 is fixedly connected to a connecting plate 201. Two adjusting rods 202 are movably connected to the top of the connecting plate 201. The other ends of the two adjusting rods 202 are movably connected to the bottom of the limiting block 203. In this embodiment, after the limiting block 203 is adjusted to be the same width as the film, there will be no slippage.

[0037] like Figures 1-4As shown, a cooling roller 3 is provided on the right side of the take-up roller 204, and a cooling device 301 is provided at one end of the cooling roller 3. The cooling device 301 may be provided with liquid nitrogen cooling, etc., to achieve a rapid cooling effect.

[0038] In this embodiment, the operator can use the controller to activate the electric telescopic rod 2 fixedly installed on the top of the base plate 1, so that its output end pushes the adjusting rod 202 horizontally, causing the two adjusting rods 202 on the top of the adjusting rod 202 to rotate horizontally, thereby driving the two limiting blocks 203 to slide on the outer surface of the winding roller 204. The blocks are adjusted to the appropriate position according to the width of the film. Thus, when the heat-sealed film passes through the cooling roller 3, it is wound up by the winding roller 204. Therefore, there will be no left or right deviation when winding up after heat sealing, which is very convenient.

[0039] Working Principle: When heat sealing one side of a plastic film is required, the operator can adjust the distance between the two heating rollers 103 according to the thickness of the film substrate. First, the controller starts motor 106, ensuring a stable output power to drive the transmission rod 108 to rotate. After the initial adjustment, the controller starts motor 107, which also outputs stable power to drive the long rod 109 to rotate, causing the heating box 104 to slide up and down through the square through-hole inside the support plate 101. This operation adjusts the distance between the two heating rollers 103 to the optimal distance for heat sealing the plastic film. After adjustment, the heating box 104 and cooling device 301 are started. After the two film substrates pass the outer surface of the feeding roller 102 and then through the gap between the heating rollers 103, the heating rollers 103 have been fully preheated by the heating wires of the heating box 104, allowing for heat sealing of the two film substrates. Then, the motor 107 drives the heating rollers to rotate. The movable rod 109 drives the heating roller 103 to apply a certain pressure, ensuring that the two heated film substrates are in close contact and are bonded together by melting. Then, the film passes through the cooling roller 3 and is rapidly cooled by the cooling device 301, improving the cooling efficiency after heat sealing. Thus, when heat sealing one side of the plastic film, the equipment can be adjusted according to the thickness of the film substrate, preventing the seal from being weak. This improves the sealing quality and overall production efficiency. Furthermore, the operator can use the controller to start the electric telescopic rod 2, which is fixedly installed on the top of the base plate 1. Its output end pushes the adjusting rod 202 horizontally, causing the two adjusting rods 202 on the top of the adjusting rod 202 to rotate horizontally. This, in turn, causes the two limit blocks 203 to slide on the outer surface of the winding roller 204, adjusting to the appropriate position according to the width of the film. Thus, when the heat-sealed film passes through the cooling roller 3, it is wound up by the winding roller 204. Therefore, there is no left or right deviation during winding after heat sealing, which is very convenient.

[0040] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A single-sided heat-sealing mechanism for film rolls in a bag-making machine, comprising a base plate (1), characterized in that: Two symmetrically distributed support plates (101) are fixedly installed on the top of the base plate (1). Two feeding rollers (102) are arranged between the two support plates (101). Two heating rollers (103) are rotatably connected between the two support plates (101). A heating box (104) is provided at one end of each of the two heating rollers (103). A support platform (105) is fixedly connected to the top of the base plate (1). A motor (106) is fixedly installed on the top of the support platform (105). A transmission rod (108) is fixedly connected to the output end of the motor (106). A long rod (109) is movably connected to one side of the outer surface of the transmission rod (108). One end of the long rod (109) is movably connected to the outer surface of one of the heating boxes (104). A motor (107) is fixedly installed on one side of the outer surface of one of the support plates (101). The output end of the motor (107) is fixedly connected to the inside of the long rod (109).

2. The single-sided heat-sealing mechanism for film roll of a bag-making machine according to claim 1, characterized in that: One of the support plates (101) has a square through hole inside, and one of the heating boxes (104) is slidably connected inside the square through hole.

3. The single-sided heat-sealing mechanism for film roll of a bag-making machine according to claim 1, characterized in that: A heating wire is provided between the heating box (104) and the heating roller (103).

4. The single-sided heat-sealing mechanism for film roll of a bag-making machine according to claim 1, characterized in that: A winding roller (204) for film winding is rotatably connected between the two support plates (101), and two limiting blocks (203) are movably sleeved on the outer surface of the winding roller (204).

5. The single-sided heat-sealing mechanism for film roll of a bag-making machine according to claim 1, characterized in that: An electric telescopic rod (2) is fixedly installed on the top of the base plate (1) near the edge, and a connecting plate (201) is fixedly connected to the output end of the electric telescopic rod (2).

6. The single-sided heat-sealing mechanism for film roll of a bag-making machine according to claim 5, characterized in that: The top of the connecting plate (201) is movably connected to two adjusting rods (202), and the other ends of the two adjusting rods (202) are movably connected to the bottom of the limiting block (203).

7. The single-sided heat-sealing mechanism for film roll of a bag-making machine according to claim 4, characterized in that: A cooling roller (3) is provided on the right side of the take-up roller (204), and a cooling device (301) is provided at one end of the cooling roller (3).

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