PE breathable film stretching device

Abstract

The utility model relates to a PE breathable film stretching device which comprises a workbench, two guide rollers used for guiding a PE film, a heating part used for heating the PE film and an adjusting assembly used for adjusting the heating part, the two guide rollers are rotationally installed on the workbench along the horizontal plane, the heating part is arranged between the two guide rollers, and the adjusting assembly is used for adjusting the heating part. The two adjusting assemblies are arranged on the two sides, perpendicular to the moving direction of the PE film, of the heating part correspondingly, each adjusting assembly comprises two first adjusting rods, the upper ends of the first adjusting rods are rotationally connected to the heating part, the lower ends of the two first adjusting rods are obliquely arranged towards the sides away from each other, and sliding blocks are hinged to the lower ends of the first adjusting rods; the sliding block is slidably arranged on the workbench in the direction parallel to the moving direction of the PE film. The adjusting device has the effect of adjusting the adjusting degree in the PE film machining process.

Description

Technical Field

[0001] The present application relates to the technical field of PE breathable film processing, and in particular to a PE breathable film stretching device. Background Art

[0002] The waterproof breathable membrane is mainly made of thermoplastics as carriers, with inorganic mineral fillers added, extruded by cold roll casting, and then longitudinally stretched to have a unique microporous structure. These special micropores distributed at high density on the surface of the waterproof breathable membrane enable the waterproof breathable membrane to block the leakage of liquid water and allow gas molecules such as water vapor to pass through. The main application areas include personal hygiene care products, medical protective products, personal protective products for special places, clothing linings, auxiliary materials for pharmaceutical packaging, and the construction industry.

[0003] The Chinese patent with application number 202022258055.6 discloses a PE breathable film stretching device, which includes a workbench, and the front of the workbench is fixedly connected with a first fixed plate, a heating box, and a second fixed plate in sequence from front to back. The PE breathable film stretching device is arranged by the coordination between the workbench, the first fixed plate, the heating box, the second fixed plate, the winding roller, the first guide roller, the second guide roller, the control motor, the heat conductive sheet, and the heating tube. When the breathable film needs to be stretched, the staff can first start the heating tube, and then wind the breathable film around the first guide roller, the second guide roller, and the winding roller. The heating tube will heat the heat-conducting oil inside the heating box, and the heat is dissipated through the heat conductive sheet to heat the breathable film.

[0004] However, when the roller winding speed changes during the production process, it is easy to cause the PE film to be too tight or loose, affecting the production quality of the PE film. Utility Model Content

[0005] In order to solve the problem that the tightness of the PE film cannot be adjusted in time during the production process, the present application provides a PE breathable film stretching device.

[0006] The present application provides a PE breathable film stretching device, which adopts the following technical solution:

[0007] A PE breathable film stretching device comprises a workbench, two guide rollers for guiding the PE film, a heating part for heating the PE film and an adjusting assembly for adjusting the heating part, wherein the two guide rollers are rotatably installed on the workbench along a horizontal plane, the rotation axis of the guide rollers is perpendicular to the moving direction of the PE film, the heating part is arranged between the two guide rollers, the lower end surface of the heating part is arc-shaped, the horizontal position of the guide rollers is higher than the upper end surface of the heating part, two groups of the adjusting assemblies are respectively arranged on both sides of the heating part perpendicular to the moving direction of the PE film, the adjusting assembly comprises two first adjusting rods, the upper ends of the first adjusting rods are rotatably connected to the heating part, the lower ends of the two first adjusting rods are inclined toward a side away from each other, the lower ends of the first adjusting rods are hinged with a slider, and the slider is slidably arranged on the workbench along a direction parallel to the moving direction of the PE film.

[0008] By adopting the above technical solution, during the relative movement of the two slides, the two first adjusting rods are driven to move, so as to adjust the height of the heating part, thereby realizing the adjustment of the tightness of the PE film.

[0009] Optionally: the adjustment component also includes a bidirectional screw rod, which is threadedly connected to two adjacent sliders, and the threads connecting the two adjacent sliders have different rotation directions.

[0010] By adopting the above technical solution, the two sliders are driven to move in a mirror image during the rotation of the bidirectional screw, thereby ensuring the stability of the heating part.

[0011] Optional: A second adjusting rod is hinged on the slider, and the rotation axis of the second adjusting rod is parallel to the rotation axis of the first adjusting rod. The adjusting assembly also includes two third adjusting rods, and the lower ends of the third adjusting rods are hinged to the workbench, and the upper ends of the third adjusting rods, the upper ends of the second adjusting rods and the guide rollers are coaxially rotatably connected, and the lower ends of the third adjusting rods and the second adjusting rods are tilted away from each other.

[0012] By adopting the above technical solution, when the two sliders move relative to each other, the angle between the second adjusting rod and the horizontal plane changes. Through the mutual cooperation between the second adjusting rod and the first adjusting rod, the guide roller and the heating part are driven to move in opposite directions in the vertical direction, thereby further enhancing the adjustable range.

[0013] Optionally: A driving motor for driving the bidirectional screw to rotate is arranged on the workbench, and the output shaft of the driving motor is respectively connected to the two bidirectional screws through two synchronous belts.

[0014] By adopting the above technical solution, the driving motor and the two synchronous belts drive the two bidirectional lead screws to rotate synchronously, thereby ensuring the synchronization of the two groups of adjustment components.

[0015] Optionally: Two auxiliary rollers are arranged on the workbench, and the auxiliary rollers are rotatably connected to the workbench. The two auxiliary rollers are respectively arranged on the side of the two guide rollers away from each other, and the rotation axis of the auxiliary roller is parallel to the rotation axis of the guide roller, and the horizontal position of the guide roller is lower than the horizontal position of the guide roller.

[0016] By adopting the above technical solution, the cloth first passes through the auxiliary roller and then goes around the guide roller upward, thereby changing the star angle of the PE film and further enhancing the stretching effect on the PE film.

[0017] Optionally: a refueling port is provided at the upper end of one side of the heating part perpendicular to the moving direction of the PE film, a sealing plug is connected to the inner thread of the refueling port, a heating wire is provided in the heating part, and the heating wire is arranged perpendicular to the moving direction of the PE film.

[0018] By adopting the above technical solution, the heat transfer oil is injected into the heating part through the filling port, and the heat transfer oil in the heating part is evenly heated by the heating wire to ensure the stability of the temperature of the heating part.

[0019] Optionally: the outer wall of the heating part is a heat-insulating layer, the lower end surface of the heating part is provided with a first opening, and a heat-conducting layer for sealing the first opening is provided in the first opening.

[0020] By adopting the above technical solution, the heat loss of the heating part is reduced and energy is saved.

[0021] Optional: A liquid level meter is provided on the outer wall of the heating part.

[0022] By adopting the above technical solution, it is convenient to manually monitor the oil amount in the heating part.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. By changing the position between the heating part and the guide roller, the tightness of the PE film can be adjusted during the heating and stretching process.

[0025] 2. By arranging a heat-insulating layer and a heat-conducting layer on the heating part, the heat loss of the heating part is effectively reduced without affecting the heating of the PE film. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of an embodiment of the present application;

[0027] Figure 2 This is a cross-sectional structural diagram of a heating portion of an embodiment of the present application;

[0028] Figure 3 for Figure 2Schematic diagram of the structure of part A.

[0029] In the figure, 1. workbench; 2. heating part; 21. heat transfer oil; 22. refueling port; 23. oil outlet; 24. liquid level gauge; 25. sealing plug; 26. heat transfer layer; 27. insulation layer; 28. heating wire; 3. adjustment component; 31. first adjustment rod; 32. second adjustment rod; 33. third adjustment rod; 34. slider; 35; bidirectional screw rod; 36. drive motor; 37. synchronous belt; 4. guide roller; 5. auxiliary roller. DETAILED DESCRIPTION

[0030] The present application is further described in detail below in conjunction with the accompanying drawings.

[0031] The present application discloses a PE breathable film stretching device, such as Figure 1 As shown, it includes a workbench 1, two guide rollers 4 for guiding the PE film, two auxiliary rollers 5, a heating part 2 for heating the PE film and an adjusting component 3 for adjusting the heating part 2. The two guide rollers 4 are horizontally arranged and rotatably connected to the workbench 1. The two guide rollers 4 are in the same horizontal plane. The rotation axis of the guide rollers 4 is perpendicular to the moving direction of the PE film. The PE film is bypassed by the upper side of the two guide rollers 4. The heating part 2 is arranged between the two guide rollers 4, and the PE film is bypassed along the lower side of the heating part 2.

[0032] like Figure 2 and Figure 3 As shown, the heating part 2 is filled with heat transfer oil 21, and an oil outlet 23 is provided at the bottom end of the heating part 2 on one side perpendicular to the moving direction of the PE film, and a refueling port 22 is provided on the side wall of the heating part 2. Sealing plugs 25 are provided in the refueling port 22 and the oil outlet 23, and the two sealing plugs 25 are respectively threadedly connected to the refueling port 22 and the oil outlet 23, and the heat transfer oil 21 is cleaned and replaced through the refueling port 22 and the oil outlet 23. A liquid level gauge 24 is provided on the side wall of the heating part 2 to facilitate real-time monitoring of the oil amount in the heating part 2. A heating wire 28 for heating the heat transfer oil 21 is provided in the heating part 2, and the heating wire 28 is evenly arranged perpendicular to the moving direction of the PE film to ensure uniform heating in the heating part 2. The outer wall of the heating part 2 is made of insulation material with poor thermal conductivity to form an insulation layer 27 to reduce energy loss. A first strip-shaped opening is provided on the lower side of the heating part 2, and a thermal conductive layer 26 with good thermal conductivity is fixedly provided in the first opening. The PE film passes under the thermal conductive layer 26, and the thermal conductive layer 26 heats the upper surface of the PE film.

[0033] The two auxiliary rollers 5 are arranged on the side away from the two guide rollers 4. The rotation axes of the auxiliary rollers 5 and the guide rollers 4 are parallel to each other. The horizontal positions of the two auxiliary rollers 5 are lower than the horizontal position of the guide rollers 4. The PE film is passed around the lower side of the auxiliary rollers 5.

[0034] like Figure 1 As shown, two groups of adjustment components 3 are respectively arranged on both sides of the heating part 2 perpendicular to the moving direction of the PE film, and the adjustment component 3 includes two first adjustment rods 31, two second adjustment rods 32, two third adjustment rods 33, two sliders 34 and a bidirectional screw 35 for driving the two sliders 34 to move closer to or farther away from each other. The upper ends of the two first adjustment rods 31 are rotatably connected to the side wall of the heating part 2, the rotation axis of the first adjustment rods 31 is parallel to the rotation axis of the guide roller 4, the lower ends of the first adjustment rods 31 are tilted toward the side away from each other, the lower sides of the two sliders 34 are slidably connected to the upper end surface of the workbench 1 along a direction parallel to the moving direction of the PE film, and the lower ends of the two first adjustment rods 31 are correspondingly hinged to the upper ends of the two sliders 34. The two sliders 34 move closer to or farther away from each other, driving the two first adjustment rods 31 to rotate, thereby adjusting the height of the heating part 2. The lower end of the second adjusting rod 32 is hinged to the slider 34, the rotation axis of the second adjusting rod 32 is parallel to the rotation axis of the first adjusting rod 31, and the upper end of the second adjusting rod 32 is tilted toward the side away from the heating part 2. Two third adjusting rods 33 are respectively arranged on the side away from each other of the two guide rollers 4, the lower end of the third adjusting rod 33 is hinged to the upper end surface of the workbench 1, the rotation axis of the third adjusting rod 33 coincides with the rotation axis of the second adjusting rod 32, and the third adjusting rod 33 and the second adjusting rod 32 are in the same vertical plane, the upper ends of the second adjusting rod 32 and the third adjusting rod 33 are coaxially hinged to one end of the adjacent guide roller 4, and the guide roller 4 is supported by the second adjusting rod 32 and the third adjusting rod 33.

[0035] The bidirectional screw rod 35 is rotatably arranged on the workbench 1, and the bidirectional screw rod 35 is threadedly connected to the two sliders 34. The threads connecting the two sliders 34 have different rotation directions. The two sliders 34 are driven to move closer to or away from each other by the rotation of the bidirectional screw rod 35. A driving motor 36 for driving the bidirectional screw rod 35 to rotate is also arranged on the workbench 1. The driving motor 36 is fixedly arranged on the workbench 1. Synchronous wheels are arranged on the adjacent ends of the two bidirectional screw rods 35 and the output shaft of the driving motor 36. The driving motor 36 realizes synchronous driving of the two bidirectional screw rods 35 through two synchronous belts 37 to ensure the synchronization of the two adjustment components 3.

[0036] The implementation principle of this embodiment is:

[0037] The two bidirectional screw rods 35 are driven to rotate synchronously by the driving motor 36, driving the two sliders 34 to move away from or closer to each other 6. During the movement of the two sliders 34, the horizontal position of the heating part 2 is adjusted by the first adjusting rod 31. At the same time, the lower end of the second adjusting rod 32 moves with the slider 34, thereby adjusting the horizontal position of the guide roller 4. The guide roller 4 and the heating part 2 move in opposite directions in the horizontal direction, thereby adjusting the tightness of the PE film.

[0038] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A PE breathable film stretching device, characterized in that: The invention comprises a workbench (1), two guide rollers (4) for guiding a PE film, a heating part (2) for heating the PE film, and an adjusting assembly (3) for adjusting the heating part (2), wherein the two guide rollers (4) are rotatably mounted on the workbench (1) along a horizontal plane, the rotation axis of the guide rollers (4) is perpendicular to the moving direction of the PE film, the heating part (2) is arranged between the two guide rollers (4), the lower end surface of the heating part (2) is in an arc shape, and the horizontal position of the guide rollers (4) is higher than that of the heating part (2). The upper end surface of the heating portion (2), the two groups of adjustment components (3) are respectively arranged on both sides of the heating portion (2) perpendicular to the moving direction of the PE film, the adjustment components (3) include two first adjustment rods (31), the upper ends of the first adjustment rods (31) are rotatably connected to the heating portion (2), the lower ends of the two first adjustment rods (31) are inclined to a side away from each other, and the lower ends of the first adjustment rods (31) are hinged with a slider (34), and the slider (34) is slidably arranged on the workbench (1) in a direction parallel to the moving direction of the PE film.

2. A PE breathable film stretching device according to claim 1, characterized in that: The adjustment assembly (3) further comprises a bidirectional screw rod (35), wherein the bidirectional screw rod (35) is threadedly connected to two adjacent sliders (34), and the threaded connection between the two adjacent sliders (34) has different rotation directions.

3. A PE breathable film stretching device according to claim 2, characterized in that: A second adjusting rod (32) is hinged on the slider (34), and the rotation axis of the second adjusting rod (32) is parallel to the rotation axis of the first adjusting rod (31). The adjusting assembly (3) also includes two third adjusting rods (33), the lower ends of the third adjusting rods (33) are hinged to the workbench (1), the upper ends of the third adjusting rods (33), the upper ends of the second adjusting rods (32) and the guide roller (4) are coaxially rotatably connected, and the lower ends of the third adjusting rods (33) and the second adjusting rods (32) are inclined and arranged away from each other.

4. A PE breathable film stretching device according to claim 2, characterized in that: The workbench (1) is provided with a driving motor (36) for driving the bidirectional screw rod (35) to rotate, and the output shaft of the driving motor (36) is respectively connected to the two bidirectional screw rods (35) through two synchronous belts (37).

5. A PE breathable film stretching device according to claim 1, characterized in that: Two auxiliary rollers (5) are arranged on the workbench (1), and the auxiliary rollers (5) are rotatably connected to the workbench (1). The two auxiliary rollers (5) are respectively arranged on the sides of the two guide rollers (4) that are away from each other. The rotation axis of the auxiliary roller (5) is parallel to the rotation axis of the guide roller (4), and the horizontal position of the guide roller (4) is lower than the horizontal position of the guide roller (4).

6. A PE breathable film stretching device according to claim 1, characterized in that: A refueling port (22) is provided at the upper end of one side of the heating portion (2) perpendicular to the moving direction of the PE film, and a sealing plug (25) is connected to the inner thread of the refueling port (22). A heating wire (28) is provided in the heating portion (2), and the heating wire (28) is arranged perpendicular to the moving direction of the PE film.

7. A PE breathable film stretching device according to claim 1, characterized in that: The outer wall of the heating portion (2) is a heat-insulating layer (27), the lower end surface of the heating portion (2) is provided with a first opening, and a heat-conducting layer (26) for sealing the first opening is provided in the first opening.

8. A PE breathable film stretching device according to claim 6, characterized in that: The outer wall of the heating portion (2) is provided with a liquid level meter (24).

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