Membrane material welding device

Abstract

The utility model relates to plastic welding, and provides a membrane material welding device which comprises a pair of bases arranged oppositely, a driving roller horizontally arranged between the pair of bases, a first driving device used for driving the driving roller to rotate, a welding roller arranged over the driving roller and an electric heating plate arranged in the welding roller. The second driving device is used for driving the welding roller to move in the vertical direction; and the welding roller is parallel to the driving roller and is arranged right above the driving roller. According to the membrane material welding device, the membrane material can be efficiently welded, so that the membrane material can be better wound.

Description

Technical Field

[0001] This utility model relates to the technical field of plastic welding, and more specifically, to a membrane welding device. Background Art

[0002] The production of multi-chamber bag films for powder and liquid has developed significantly in recent years. Multi-chamber bag films for powder and liquid are increasingly widely used in food packaging, pharmaceuticals, chemicals, industry, agriculture and other fields due to their unique and excellent properties.

[0003] In existing technologies, multi-layer co-extrusion composite blown film technology is generally used to prepare powder-liquid multi-compartment infusion bags. However, in actual blown film production, because the inner layer of the powder-liquid film lacks self-adhesion, wrinkles of varying degrees occur instantaneously upon contact between the film surface and the core surface at the start of winding, resulting in significant waste for downstream pharmaceutical companies. Therefore, a welding device can be designed to weld the film material, enabling better winding. Utility Model Content

[0004] The purpose of this invention is to provide a membrane welding device that can efficiently weld membrane materials, enabling them to be rolled up more effectively.

[0005] This utility model is achieved through the following technical solution: The membrane welding device of this utility model includes a pair of oppositely arranged bases, a drive roller horizontally arranged between the pair of bases, a first drive device for driving the drive roller to rotate, a welding roller arranged directly above the drive roller, an electric heating plate arranged inside the welding roller, and a second drive device for driving the welding roller to move in a vertical direction; the welding roller is parallel to the drive roller and is arranged directly above the drive roller.

[0006] Furthermore, the first driving device includes a first rotating shaft disposed inside the driving roller and a motor connected to the first rotating shaft; the first rotating shaft is coaxially disposed with the driving roller, both ends of the first rotating shaft are rotatably connected to the base, and one end of the first rotating shaft is connected to the output shaft of the motor.

[0007] Furthermore, the second driving device includes a pair of vertically arranged electric push rods, a slider connected to the telescopic rod of the electric push rods, and a second rotating shaft for connecting the pair of sliders; the electric push rods are located at the upper end of the base; the second rotating shaft is located inside the welding roller and is coaxially arranged with the welding roller; the second rotating shaft is rotatably connected to the slider.

[0008] Furthermore, the upper end of the base is provided with a sliding groove, and the slider is slidably disposed in the sliding groove.

[0009] Furthermore, the welding roller has a hollow structure, and bearings are provided on the inner walls of both ends of the welding roller; the second rotating shaft is located in the bearings.

[0010] Furthermore, the heating plate is attached to the inner wall of the welding roller, and the length direction of the heating plate is parallel to the length direction of the welding roller.

[0011] Furthermore, a counterweight is provided on the side of the heating plate away from the inner wall of the welding roller.

[0012] Furthermore, the welding roller is made of pure copper.

[0013] The technical solution of this utility model has at least the following advantages and beneficial effects: In the membrane welding device of this utility model, strip-shaped membrane material is placed on the drive roller for winding during use. At the same time, the first drive device drives the drive roller to rotate synchronously (the drive roller does not have a pulling effect on the membrane material, and the rotation speed of the drive roller is matched with the winding speed of the membrane material). When the end of a single membrane material is close to the drive roller, the starting end of another membrane material is pulled and brought close to the drive roller. Then, the ends of the two membrane materials are joined together. The welding roller is preheated using a heating plate. When the ends of the two membrane materials move between the drive roller and the welding roller, the second drive device drives the welding roller to move downward and press it against the ends of the membrane materials, so that the ends of the membrane materials melt and weld the two membrane materials together. Then, the second drive device drives the welding roller to move upward, and the membrane material continues to be wound. This method of welding the membrane material first and then winding it can prevent wrinkles and deformation when the membrane material is wound onto the roller, thereby improving the utilization rate of the membrane material and reducing membrane material waste. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 A schematic diagram of the membrane welding device provided in an embodiment of this utility model;

[0016] Figure 2 A two-view structural schematic diagram of the membrane welding device provided in an embodiment of this utility model;

[0017] Figure 3 A schematic diagram of the base portion provided in an embodiment of this utility model;

[0018] Figure 4This is a schematic diagram of the structure of the welding roller portion provided in an embodiment of the present utility model;

[0019] Figure 5 A schematic diagram of the internal structure of the welding roller provided in an embodiment of this utility model;

[0020] Figure 6 This is a two-view structural schematic diagram of the inside of the welding roller provided in an embodiment of the present invention.

[0021] Icons: 11-Base, 12-Drive roller, 13-First shaft, 14-Motor, 15-Groove, 21-Welding roller, 22-Second shaft, 23-Electric push rod, 24-Slider, 25-Bearing, 26-Heating plate, 27-Counterweight, 30-Membrane material. Detailed Implementation

[0022] Example

[0023] The following description, in conjunction with specific embodiments, further illustrates the point, as shown in the appendix. Figure 1 - Appendix Figure 6 As shown, the film welding device of this embodiment includes a pair of opposing bases 11, a drive roller 12 horizontally disposed between the pair of bases 11, a first drive device for driving the drive roller 12 to rotate, a welding roller 21 disposed directly above the drive roller 12, a heating plate 26 disposed inside the welding roller 21, and a second drive device for driving the welding roller 21 to move vertically; the welding roller 21 is parallel to the drive roller 12 and disposed directly above the drive roller 12. Specifically, in use, the strip-shaped film 30 is placed on the drive roller 12 for winding, and the first drive device drives the drive roller 12 to rotate synchronously (the drive roller 12 does not have a pulling effect on the film 30, and the rotation speed of the drive roller 12 matches the winding speed of the film 30). When the end of a single film 30 is close to the drive roller 12, the starting end of another film 30 is pulled and brought close to the drive roller 12, and then the ends of the two film 30s are joined together. The heating plate 26 is used to preheat the welding roller 21. When the ends of the two film 30s are... When the end of the film 30 moves between the drive roller and the welding roller 21, the second drive device drives the welding roller 21 downward and presses it against the end of the film 30, melting the end of the film 30 and welding the two films 30 together. Then, the second drive device drives the welding roller 21 upward, and the film 30 continues to be wound up. This method of welding the film 30 first and then winding it up prevents wrinkles and deformation when the film 30 is wound onto the roller, thus improving the utilization rate of the film 30 and reducing waste. It should be noted that after the welded film 30 is wound onto the roller to a certain length, a cutter is used to cut off the welded part of the film 30. At this point, the film is adhered to the reverse adhesive pre-set on the roller, and then the winding can continue.

[0024] The first driving device in this embodiment includes a first rotating shaft 13 disposed in the driving roller 12 and a motor 14 connected to the first rotating shaft 13; the first rotating shaft 13 is coaxially arranged with the driving roller 12, both ends of the first rotating shaft 13 are rotatably connected to the base 11, and one end of the first rotating shaft 13 is connected to the output shaft of the motor 14.

[0025] The second driving device in this embodiment includes a pair of vertically arranged electric push rods 23, a slider 24 connected to the telescopic rod of the electric push rods 23, and a second rotating shaft 22 for connecting the pair of sliders 24. The electric push rods 23 are located on the upper end of the base 11. The second rotating shaft 22 is located inside the welding roller 21 and is coaxial with the welding roller 21. The second rotating shaft 22 is rotatably connected to the sliders 24. Specifically, the pair of electric push rods 23 work synchronously to drive the pair of sliders 24 to move up and down. The up and down movement of the sliders 24 drives the second rotating shaft 22 to move up and down, and finally drives the welding roller 21 to move up and down. The welding roller 21 is not fixed; it can rotate under the influence of the film material 30. This avoids the welding roller 21 causing stretching at the joint of the film material 30.

[0026] In this embodiment, the upper end of the base 11 is provided with a slide groove 15, and the slider 24 is slidably disposed in the slide groove 15. Specifically, by providing the slide groove 15, the slider 24 can move more stably.

[0027] In this embodiment, the welding roller 21 has a hollow structure, and bearings 25 are provided on the inner walls of both ends of the welding roller 21; the second rotating shaft 22 is located in the bearings 25. The heating plate 26 is attached to the inner wall of the welding roller 21, and the length direction of the heating plate 26 is parallel to the length direction of the welding roller 21. A counterweight is provided on the side of the heating plate 26 away from the inner wall of the welding roller 21. Specifically, the second rotating shaft 22 is rotatably connected to the welding roller 21 through the bearings 25, so that the welding roller 21 can rotate freely. Due to the presence of the heating plate 26 and the counterweight, the side of the welding roller 21 with the heating plate 26 will be at the bottom under the action of gravity. Therefore, most of the heat generated by the heating plate 26 is located on the bottom side of the welding roller 21, so the heat is more concentrated, which can better weld the film material 30 and save more energy. After welding, the welding roller 21 will rotate to a certain extent, but under the action of gravity, the side with the heating plate 26 and the counterweight 27 will always face downward.

[0028] The welding roller 21 in this embodiment is made of pure copper. Specifically, the pure copper welding roller 21 has better thermal conductivity and corrosion resistance.

[0029] In summary, in this embodiment of the membrane welding device, the strip-shaped membrane 30 is placed on the drive roller 12 for winding during use. Simultaneously, the first drive device drives the drive roller 12 to rotate synchronously (the drive roller 12 does not exert any tension on the membrane 30; the rotational speed of the drive roller 12 matches the winding speed of the membrane 30). When the end of a single membrane 30 is close to the drive roller 12, the starting end of another membrane 30 is pulled and brought close to the drive roller 12. Then, the ends of the two membranes 30 are joined together. The welding roller 21 is preheated using the heating plate 26. When the two... When the end of the membrane material 30 moves between the drive and the welding roller 21, the second drive device drives the welding roller 21 to move downward and press it against the end of the membrane material 30, so that the end of the membrane material 30 melts and welds the two membrane materials 30 together. Then the second drive device drives the welding roller 21 to move upward, and the membrane material 30 continues to be wound up. This method of welding the membrane material 30 first and then winding it up can prevent wrinkles and deformation when the membrane material 30 is wound onto the roller, thereby improving the utilization rate of the membrane material 30 and reducing waste of the membrane material 30.

[0030] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A membrane welding device, characterized in that: It includes a pair of opposing bases (11), a drive roller (12) horizontally disposed between the pair of bases (11), a first drive device for driving the drive roller (12) to rotate, a welding roller (21) disposed directly above the drive roller (12), an electric heating plate (26) disposed inside the welding roller (21), and a second drive device for driving the welding roller (21) to move in the vertical direction; The welding roller (21) is parallel to the drive roller (12) and is located directly above the drive roller (12).

2. The membrane welding apparatus according to claim 1, characterized in that: The first driving device includes a first rotating shaft (13) disposed in the driving roller (12) and a motor (14) connected to the first rotating shaft (13); The first rotating shaft (13) is coaxially arranged with the drive roller (12), and both ends of the first rotating shaft (13) are rotatably connected to the base (11). One end of the first rotating shaft (13) is connected to the output shaft of the motor (14).

3. The membrane welding apparatus according to claim 1, characterized in that: The second drive device includes a pair of vertically arranged electric push rods (23), a slider (24) connected to the telescopic rod of the electric push rods (23), and a second rotating shaft (22) for connecting the pair of sliders (24); The electric push rod (23) is located on the upper end of the base (11); the second rotating shaft (22) is located inside the welding roller (21) and is coaxial with the welding roller (21); the second rotating shaft (22) is rotatably connected to the slider (24).

4. The membrane welding apparatus according to claim 3, characterized in that: The upper end of the base (11) is provided with a sliding groove (15), and the slider (24) is slidably disposed in the sliding groove (15).

5. The membrane welding apparatus according to claim 3, characterized in that: The welding roller (21) has a hollow structure, and bearings (25) are provided on the inner walls of both ends of the welding roller (21); the second rotating shaft (22) is located in the bearings (25).

6. The membrane welding apparatus according to claim 5, characterized in that: The heating plate (26) is attached to the inner wall of the welding roller (21), and the length direction of the heating plate (26) is parallel to the length direction of the welding roller (21).

7. The membrane welding apparatus according to claim 6, characterized in that: The heating plate (26) is provided with a counterweight bar on the side away from the inner wall of the welding roller (21).

8. The membrane welding apparatus according to claim 6, characterized in that: The welding roller (21) is made of pure copper.

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