Pressure adjustable heat sealing device for bag cutting machine

Abstract

The utility model discloses adjustable pressure hot cut bag making machine pressure seal device, including bottom plate and support frame still include flexible pressure roller and adjusting assembly, the upper end fixed mounting of bottom plate has the support frame, the surface fixed mounting of support frame has lower heat seal cutter, the upper heat seal cutter is equipped with in the upper side of lower heat seal cutter, the upper end one side fixed mounting of bottom plate has the mounting bracket, the one side of mounting bracket is equipped with the adjusting assembly for adjusting the pressure of upper heat seal cutter, the both sides of upper heat seal cutter are equipped with the flexible pressure roller for shaping, this adjustable pressure hot cut bag making machine pressure seal device upper heat seal cutter before moving down completes heat seal, and flexible pressure roller will contact with film surface in advance, and in the process of pressure seal, flexible pressure roller is extruded and simultaneously moves to the outside to flatten and tighten the film, so in the process of heat seal, the film of heat seal place deforms and also will not influence the rest area, like this, guarantee the overall appearance of finished product neat.

Description

Technical Field

[0001] This utility model relates to the field of hot-cut bag making technology, and in particular to a sealing device for a hot-cut bag making machine with adjustable pressure. Background Technology

[0002] The hot-cut bag-making machine's sealing device pre-presses the bag opening, causing the packaging film to form a fixed shape before sealing, ensuring precise alignment of the sealing position. This pre-treatment process can significantly improve sealing strength and airtightness, avoiding leakage problems caused by positional deviations.

[0003] Existing hot-cut bag-making machines use heating wires or hot air blowers to soften the film and then apply pressure to seal it. However, the film deforms when heated, and when pressure is applied during sealing, the deformed film is prone to misalignment. Although it is unlikely to result in a leaky seal, the overall shape of the bag after forming will be skewed, greatly reducing its aesthetic appeal. These defective products cannot be reworked later, which indirectly increases processing costs. Therefore, a sealing device that can flexibly limit the film during the sealing process is needed to overcome the above problems. Utility Model Content

[0004] In order to overcome the problem that the film will deform after being heated during the sealing process of the existing hot-cut bag making machine, resulting in misalignment of the sealing and a significant decrease in the appearance of the bag.

[0005] The technical solution of this utility model is as follows: an adjustable pressure heat-sealing bag making machine, including a base plate and a support frame, as well as a flexible pressure roller and an adjustment component. The support frame is fixedly installed on the upper end of the base plate, and a lower heat-sealing knife is fixedly installed on the surface of the support frame. An upper heat-sealing knife is provided above the lower heat-sealing knife. An installation frame is fixedly installed on one side of the upper end of the base plate. An adjustment component for adjusting the lower pressure of the upper heat-sealing knife is provided on one side of the installation frame. Flexible pressure rollers for shaping are provided on both sides of the upper heat-sealing knife.

[0006] Preferably, rotating arms are rotatably connected to both sides of the upper heat sealing knife, and a flexible pressure roller is rotatably set between the two rotating arms. A magnetic ring is fixedly connected to the middle surface of the flexible pressure roller, and the magnetic ring is attracted to the upper end of the support frame.

[0007] Preferably, shock-absorbing pads are fixedly connected to both ends of the upper heat sealing knife, and the shock-absorbing pads are in contact with the surface of the rotating arm.

[0008] Preferably, a guide shaft is fixedly installed on the upper end of the base plate, a flange shaft slides on the surface of the guide shaft, a support plate is fixedly connected between the two flange shafts, a slide rod is fixedly connected to the upper end of the upper heat sealing knife, the slide rod is slidably connected to the support plate, a spring is sleeved on the surface of the slide rod, and the spring is located between the support plate and the upper heat sealing knife.

[0009] Preferably, the surface of the mounting bracket is provided with a sliding groove, a slider is slidably connected in the sliding groove of the mounting bracket, a motor is fixedly mounted on the surface of the slider, a rotating disk is fixedly connected to the output end of the motor, a connecting arm is rotatably connected to the surface of the rotating disk, and one end of the connecting arm is rotatably connected to the flange shaft.

[0010] Preferably, the adjustment assembly includes a bearing housing, which is fixedly installed on one side of the base plate. A threaded rod is rotatably connected to the upper end of the bearing housing, and the threaded rod is threadedly connected to the slider. An anti-slip handle is fixedly connected to the upper end of the threaded rod.

[0011] Preferably, one side surface of the mounting bracket has evenly distributed positioning holes, and one side of the slider is fixedly mounted with a compression spring top, the actuating end of the compression spring top being adapted to the positioning holes.

[0012] The beneficial effects of this utility model are:

[0013] 1. Before the heat sealing knife of the adjustable pressure heat-cutting bag making machine completes the heat sealing, the flexible pressure roller will contact the film surface in advance. During the sealing process, the flexible pressure roller is squeezed and moves outward at the same time to flatten and tighten the film. In this way, the deformation of the film at the heat sealing point will not affect the other areas during the heat sealing process, thus ensuring that the overall shape of the finished product is neat.

[0014] 2. When it is necessary to adjust the downward pressure of the upper heat sealing knife, the pressure can be adjusted by adjusting the height of the upper heat sealing knife through the adjustment component. It is simple and convenient and has multiple gears, which makes it easy for the staff to judge the magnitude of the downward pressure of the upper heat sealing knife. The pressure spring head will hit and make a sound during adjustment to indicate that the gear change is complete. Attached Figure Description

[0015] Figure 1 The diagram shown is a structural schematic of one embodiment of the adjustable pressure hot-cutting bag-making machine sealing device of this utility model;

[0016] Figure 2 The diagram shown is a three-dimensional structural diagram of the connection between the slider and the threaded rod of this utility model.

[0017] Figure 3 The diagram shown is a three-dimensional structural diagram of the connection between the magnetic ring and the flexible pressure roller of this utility model.

[0018] Figure 4 The diagram shown is a side view of the shock-absorbing pad and rotating arm of this utility model.

[0019] Figure 5 The diagram shown is a three-dimensional structural diagram of the positioning hole of this utility model.

[0020] Explanation of reference numerals in the attached drawings: 1. Base plate; 2. Support frame; 3. Lower heat sealing knife; 4. Upper heat sealing knife; 5. Guide shaft; 6. Flange shaft; 7. Support plate; 8. Slide rod; 9. Spring; 10. Rotating arm; 11. Flexible pressure roller; 12. Magnetic ring; 13. Shock-absorbing pad; 14. Mounting frame; 15. Slider; 16. Motor; 17. Rotating disk; 18. Connecting arm; 19. Bearing seat; 20. Threaded rod; 21. Compression spring top; 22. Positioning hole; 23. Anti-slip handle. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Please see Figure 1 - Figure 5 This utility model provides an embodiment of an adjustable pressure heat-sealing bag making machine, including a base plate 1 and a support frame 2, as well as a flexible pressure roller 11 and an adjustment component. The support frame 2 is fixedly installed on the upper end of the base plate 1, and a lower heat-sealing knife 3 is fixedly installed on the surface of the support frame 2. An upper heat-sealing knife 4 is provided above the lower heat-sealing knife 3. A mounting frame 14 is fixedly installed on one side of the upper end of the base plate 1, and an adjustment component for adjusting the downward pressure of the upper heat-sealing knife 4 is provided on one side of the mounting frame 14. Flexible pressure rollers 11 for shaping are provided on both sides of the upper heat-sealing knife 4. Before the upper heat-sealing knife 4 moves down to complete the heat sealing, the flexible pressure roller 11 will contact the film surface in advance. During the sealing process, the flexible pressure roller 11 will flatten and tighten the film. Even if the film at the heat-sealed area is deformed, it will not affect the other areas, thus ensuring that the overall shape of the finished product is neat.

[0023] Please see Figure 3 and Figure 4In this embodiment, rotating arms 10 are rotatably connected to both sides of the upper heat sealing knife 4. A flexible pressure roller 11 is rotatably disposed between the two rotating arms 10. A magnetic ring 12 is fixedly connected to the middle surface of the flexible pressure roller 11. The magnetic ring 12 is attracted to the upper end of the support frame 2. Shock-absorbing pads 13 are fixedly connected to both ends of the upper heat sealing knife 4. The shock-absorbing pads 13 are in contact with the surfaces of the rotating arms 10. A guide shaft 5 is fixedly installed on the upper end of the base plate 1. A flange shaft 6 slides on the surface of the guide shaft 5. A support plate 7 is fixedly connected between the two flange shafts 6. A sliding rod 8 is fixedly connected to the upper end of the upper heat sealing knife 4. The sliding rod 8 is slidably connected to the support plate 7. A spring 9 is sleeved on the surface of the sliding rod 8. The spring 9 is located on the support plate. Between the upper heat sealing knife 4 and the lower heat sealing knife 7, during use, the film is placed on the support frame 2, with the film positioned between the lower heat sealing knife 3 and the upper heat sealing knife 4. Before the upper heat sealing knife 4 moves down to complete the heat sealing, the flexible pressure rollers 11 on both sides of the upper heat sealing knife 4 will contact the film surface in advance. During the downward movement of the upper heat sealing knife 4, the flexible pressure rollers 11 are squeezed and move outward at the same time to flatten and tighten the film. In this way, during the heat sealing process, the deformation of the film at the heat sealing point will not affect other areas, thus ensuring that the overall shape of the finished product is regular. The magnetic ring 12 is adsorbed onto the surface of the support frame 2 to ensure that the flexible pressure roller 11 can always press the film tightly. The shock-absorbing pad 13 is used to reduce abnormal noise.

[0024] Please see Figure 2 and Figure 5In this embodiment, the surface of the mounting bracket 14 is provided with a sliding groove, and a slider 15 is slidably connected in the sliding groove. A motor 16 is fixedly mounted on the surface of the slider 15, and a rotating disk 17 is fixedly connected to the output end of the motor 16. A connecting arm 18 is rotatably connected to the surface of the rotating disk 17, and one end of the connecting arm 18 is rotatably connected to the flange shaft 6. The adjustment assembly includes a bearing seat 19, which is fixedly mounted on one side of the base plate 1. A threaded rod 20 is rotatably connected to the upper end of the bearing seat 19, and the threaded rod 20 is threadedly connected to the slider 15. An anti-slip handle 23 is fixedly connected to the upper end of the threaded rod 20. Positioning holes 22 are evenly distributed on one side surface of the mounting bracket 14. A compression spring head 21 is fixedly mounted on one side of the slider 15, and the actuating end of the compression spring head 21 is adapted to the positioning hole 22. In use, the motor 16 is started, and the motor 16 drives the rotating disk 17 to rotate. The support plate 7, which is fixedly connected between the two flange shafts 6, moves simultaneously. During the up-and-down movement of the upper heat sealing knife 4 below the support plate 7, it comes into contact with the lower heat sealing knife 3 to complete the heat sealing of the film. When it is necessary to adjust the downward pressure of the upper heat sealing knife 4, the anti-slip handle 23 is rotated, and the slider 15 moves simultaneously in the sliding groove on the surface of the mounting bracket 14. When the slider 15 moves downward, the height of the upper heat sealing knife 4 decreases. After the upper heat sealing knife 4 comes into contact with the lower heat sealing knife 3, the deformation of the spring 9 increases, and the downward pressure provided by the spring 9 increases. When the slider 15 moves upward, the downward pressure provided by the spring 9 decreases. This realizes the adjustment of the pressure of the upper heat sealing knife 4. It is simple and convenient. The positioning holes 22 at different positions represent different downward pressure levels, which makes it easy for the staff to judge the magnitude of the downward pressure of the upper heat sealing knife 4. The top of the compression spring head 21 will strike and make a sound to indicate that the shift is complete.

[0025] In use, the film is placed on the support frame 2, with the film positioned between the lower heat sealing knife 3 and the upper heat sealing knife 4. Then, the motor 16 is started, which drives the rotating disk 17 to rotate. The rotating disk 17 is rotatably connected to the flange shaft 6 via the connecting arm 18. During the rotation of the rotating disk 17, the flange shaft 6 slides up and down on the surface of the guide shaft 5 via the connecting arm 18. The support plate 7, which is fixedly connected between the two flange shafts 6, moves simultaneously. During the up and down movement of the upper heat sealing knife 4 below the support plate 7, it comes into contact with the lower heat sealing knife 3, thereby completing the heat sealing of the film. The lower heat sealing knife 3 and the upper heat sealing knife 4 are mature existing technologies and will not be described in detail here.

[0026] Before the upper heat-sealing knife 4 moves downward to complete the heat sealing, the flexible pressure rollers 11 on both sides of the upper heat-sealing knife 4 will contact the film surface in advance. During the downward movement of the upper heat-sealing knife 4, the flexible pressure rollers 11 are squeezed and rotated by the rotating arm 10. During the rotation of the rotating arm 10, the flexible pressure rollers 11 move outward at the same time to flatten and tighten the film. In this way, if the film at the heat-sealing point is deformed during the heat sealing process, it will not affect other areas. This ensures that the overall shape of the finished product is regular. The magnetic ring 12 is adsorbed on the surface of the support frame 2 to ensure that the flexible pressure rollers 11 can always press the film tightly. The shock-absorbing pads 13 are used to reduce abnormal noise.

[0027] When it is necessary to adjust the downward pressure of the upper heat sealing knife 4, rotate the anti-slip handle 23. The anti-slip handle 23 drives the threaded rod 20 to rotate at the bearing seat 19. At the same time, the slider 15, which is threadedly connected to the threaded rod 20, moves in the sliding groove on the surface of the mounting bracket 14. When the slider 15 moves downward, the height of the upper heat sealing knife 4 decreases. After the upper heat sealing knife 4 and the lower heat sealing knife 3 are in contact, the deformation of the spring 9 increases, and the downward pressure provided by the spring 9 increases. When the slider 15 moves upward, the downward pressure provided by the spring 9 decreases. In this way, the pressure of the upper heat sealing knife 4 can be adjusted, which is simple and convenient.

[0028] During the pressure adjustment process, the spring top 21 fixedly installed on one side of the slider 15 will pass through the positioning hole 22 during the movement. The positioning hole 22 at different positions represents different pressure levels, which makes it convenient for the staff to judge the pressure of the upper heat sealing knife 4. When the spring top 21 passes through the positioning hole 22, the top of the spring top 21 will strike and make a sound to indicate that the shift is complete.

[0029] Through the above steps, before the heat sealing knife 4 of the adjustable pressure heat-sealing bag making machine moves down to complete the heat sealing, the flexible pressure roller 11 will contact the film surface in advance. During the sealing process, the flexible pressure roller 11 is squeezed and moves outward at the same time to flatten and tighten the film. In this way, the deformation of the film at the heat sealing point during the heat sealing process will not affect the other areas, thus ensuring that the overall shape of the finished product is neat.

Claims

1. An adjustable pressure heat-sealing device for a bag-making machine, comprising a base plate (1) and a support frame (2); characterized in that: It also includes a flexible pressure roller (11) and an adjustment component. A support frame (2) is fixedly installed on the upper end of the base plate (1). A lower heat sealing knife (3) is fixedly installed on the surface of the support frame (2). An upper heat sealing knife (4) is provided above the lower heat sealing knife (3). A mounting frame (14) is fixedly installed on one side of the upper end of the base plate (1). An adjustment component for adjusting the lower pressure of the upper heat sealing knife (4) is provided on one side of the mounting frame (14). Flexible pressure rollers (11) for shaping are provided on both sides of the upper heat sealing knife (4).

2. The adjustable pressure heat-sealing device for a bag-making machine according to claim 1, characterized in that: Rotating arms (10) are rotatably connected to both sides of the upper heat sealing knife (4). A flexible pressure roller (11) is rotatably set between the two rotating arms (10). A magnetic ring (12) is fixedly connected to the middle surface of the flexible pressure roller (11). The magnetic ring (12) is attracted to the upper end of the support frame (2).

3. The adjustable pressure heat-sealing device for a bag-making machine according to claim 2, characterized in that: The two ends of the upper heat sealing knife (4) are fixedly connected with shock-absorbing pads (13), and the shock-absorbing pads (13) are in contact with the surface of the rotating arm (10).

4. The adjustable pressure heat-sealing device for a bag-making machine according to claim 3, characterized in that: A guide shaft (5) is fixedly installed on the upper end of the base plate (1). A flange shaft (6) slides on the surface of the guide shaft (5). A support plate (7) is fixedly connected between the two flange shafts (6). A slide rod (8) is fixedly connected to the upper end of the upper heat sealing knife (4). The slide rod (8) is slidably connected to the support plate (7). A spring (9) is sleeved on the surface of the slide rod (8). The spring (9) is located between the support plate (7) and the upper heat sealing knife (4).

5. The adjustable pressure heat-sealing device for a bag-making machine according to claim 4, characterized in that: The surface of the mounting bracket (14) is provided with a sliding groove. A slider (15) is slidably connected in the sliding groove on the surface of the mounting bracket (14). A motor (16) is fixedly mounted on the surface of the slider (15). A rotating disk (17) is fixedly connected to the output end of the motor (16). A connecting arm (18) is rotatably connected to the surface of the rotating disk (17). One end of the connecting arm (18) is rotatably connected to the flange shaft (6).

6. The adjustable pressure heat-sealing device for a bag-making machine according to claim 5, characterized in that: The adjustment assembly includes a bearing housing (19), which is fixedly installed on one side of the base plate (1). A threaded rod (20) is rotatably connected to the upper end of the bearing housing (19). The threaded rod (20) is threadedly connected to the slider (15). An anti-slip handle (23) is fixedly connected to the upper end of the threaded rod (20).

7. The adjustable pressure heat-sealing device for a bag-making machine according to claim 6, characterized in that: The mounting bracket (14) has evenly distributed positioning holes (22) on one side surface, and a spring top (21) is fixedly installed on one side of the slider (15). The actuating end of the spring top (21) is adapted to the positioning hole (22).

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