Device for adjusting stretch ratio and two-way stretching equipment

Abstract

The utility model relates to a device for adjusting a stretch ratio and two-way stretching equipment. The device for adjusting the stretch ratio comprises a first moving assembly, a second moving assembly and a first track, the second moving assembly and the first track are arranged on the first moving assembly, and a second track is arranged on the second moving assembly. The diaphragm can be independently and integrally adjusted in the transverse direction and the longitudinal direction by adjusting the first moving assembly and / or the second moving assembly, so that the device for adjusting the stretch ratio and the two-way stretching equipment can be used for adjusting the stretch ratio of the diaphragm at high precision, and are reasonable in structural design, stable and simple to operate and high in practicability. And the production efficiency and the product quality can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of material processing, in particular to a device for adjusting a stretching ratio and bidirectional stretching equipment. Background Art

[0002] The diaphragm is a key component in the battery, especially in lithium-ion batteries, which acts as a separation layer to prevent direct contact between the positive and negative electrodes while allowing ions to pass through. There are many existing ways to produce diaphragms, among which the diaphragm products produced by the wet method have the advantages of good mechanical strength, high porosity, uniform voids, stable production and good consistency. Among them, in the wet production of diaphragms, a biaxial stretching process is required to stretch the film material simultaneously or continuously in the longitudinal and transverse directions to improve its physical properties, that is, to improve its mechanical strength. In actual application, the stretch ratio of the biaxial stretching process is different depending on the needs, which requires both the ability to complete the established stretch ratio and the ability to adjust the stretch ratio. However, although the biaxial stretching equipment currently on the market has the function of adjusting the stretch ratio, the adjustment device occupies a large space and is cumbersome to operate, resulting in a slow adjustment of the stretch ratio and low production efficiency. Utility Model Content

[0003] In order to solve the deficiencies of the prior art, the utility model provides a device for adjusting stretching ratio and a biaxial stretching device which have simple structure, convenient operation and high adjustment efficiency.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A device for adjusting a stretching ratio, comprising:

[0006] A first moving component, a second moving component and a first track arranged on the first moving component, wherein the second moving component is arranged on a second track;

[0007] When the first moving assembly is adjusted, the first moving assembly can drive the first track and the second track to move synchronously;

[0008] When the second moving component is adjusted, the second moving component can drive the second track to move, thereby changing the relative distance between the first track and the second track.

[0009] Further, the first moving assembly includes: a first driving rod, a first connecting portion drivingly connected to the first driving rod, and a first platform connected to the first connecting portion, and the first track is arranged on the first platform;

[0010] The second moving assembly includes: a second driving rod, a second connecting portion drivingly connected to the second driving rod, and a second platform connected to the second connecting portion, and the second track is arranged on the second platform.

[0011] Furthermore, a displacement groove is provided on the first platform along the extension direction of the second driving rod, the second connecting part passes through the displacement groove, and the second driving rod can drive the second connecting part to reciprocate in the displacement groove.

[0012] Furthermore, a fixing portion is provided on the first platform, and the second driving rod is located between the first driving rod and the first platform and is disposed on the first platform through the fixing portion.

[0013] Furthermore, the first platform includes a first bottom plate and a second bottom plate movably connected to each other; the second platform includes a first top plate and a second top plate movably connected to each other, and the connection between the first top plate and the second top plate is movably connected to the second connection portion away from one end of the second driving rod.

[0014] Furthermore, a first hinge is provided at the connection between the first bottom plate and the second bottom plate; a second hinge is provided at the connection between the first top plate and the second top plate, a movable platform cooperating with the second hinge is provided on the second connecting portion, a movable groove is provided on the movable platform, and one end of the second hinge is embedded in the movable groove and can move in the movable groove.

[0015] Furthermore, an annular flange is provided at one end of the second hinged member embedded in the movable groove, and an annular groove which cooperates with the annular flange and is clamped in the movable groove.

[0016] Furthermore, it also includes a guide track, the first platform is arranged on the guide track, and the first platform is made to reciprocate along the guide track by adjusting the first driving rod.

[0017] Furthermore, a sliding member is provided on the first connecting portion, and the sliding member is located between the first platform and the guide track.

[0018] A biaxial stretching device comprises the above-mentioned device for adjusting the stretching ratio.

[0019] The beneficial effects of the utility model are:

[0020] In the wet process diaphragm production, the utility model can achieve the individual and overall adjustment of the diaphragm in the transverse and longitudinal directions by adjusting the first movable assembly and / or the second movable assembly. Compared with the prior art, the device for adjusting the stretching ratio and the biaxial stretching equipment of the present invention have the following advantages: the stretching ratio adjustment is simpler and more intuitive; the stretching ratio adjustment can be achieved with high precision by accurately controlling the first movable assembly and / or the second movable assembly; the structural design is reasonable, the operation is stable and simple, and it is conducive to improving production efficiency and product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0022] Figure 1 It is a top view schematic diagram of a device for adjusting the stretching ratio of the utility model;

[0023] Figure 2 It is a schematic top view of part of the structure of the utility model;

[0024] Figure 3 yes Figure 2 Schematic diagram of the cross section at AA in the middle;

[0025] Figure 4 It is a three-dimensional schematic diagram of the clamping assembly in the utility model;

[0026] Figure 5 It is a top view schematic diagram of the clamping assembly in the utility model.

[0027] in,

[0028] 1. first moving assembly; 11. first driving rod; 12. first connecting portion; 13. first platform; 131. first bottom plate; 132. second bottom plate; 133. first hinge; 14. displacement slot; 15. fixing portion;

[0029] 2. second moving assembly; 21. second driving rod; 22. second connecting portion; 221. moving groove; 2211. annular groove; 23. second platform; 231. first top plate; 232. second top plate; 233. second hinge; 2331. annular flange;

[0030] 3. First track; 4. Second track; 5. Guide track; 6. Clamping assembly. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the concept, specific structure and technical effects of the utility model in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the utility model. In addition, all the connection / connection relationships involved in the patent do not refer to the direct connection of components, but refer to the formation of a better connection structure by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the creation of the utility model can be combined interchangeably without conflicting with each other.

[0032] The utility model provides a device for adjusting the stretching ratio, so as to solve the problems in the prior art that the biaxial stretching equipment occupies a large space, is complicated to operate, leads to slow stretching ratio adjustment speed and low production efficiency.

[0033] Reference Figure 1-3 , a device for adjusting stretching ratio, comprising: a first moving component 1, and a second moving component 2 and a first track 3 arranged on the first moving component 1, and a second track 4 is arranged on the second moving component 2. It also includes a diaphragm clamping component 6 for clamping the diaphragm and stretching the diaphragm. It should be noted that the utility model includes the above-mentioned device for adjusting stretching ratio that is symmetrically arranged, wherein the relatively arranged diaphragm clamping components 6 clamp on both sides of the diaphragm and stretch the diaphragm. Refer to Figure 4-5The clamping assembly 6 includes a plurality of clamping units, and the plurality of clamping units are clamped with the film, and two adjacent clamping units respectively cooperate with the first track 3 and the second track 4 to move. When the first moving assembly 1 is adjusted, the first moving assembly 1 can drive the first track 3 and the second track 4 to move synchronously, thereby driving the clamping assembly 6 to adjust in the horizontal direction; when the second moving assembly 2 is adjusted, the second moving assembly 2 can drive the second track 4 to move, thereby changing the relative distance between the first track 3 and the second track 4, that is, the first track 3 and the second track 4 are moved closer or farther away, which can change the distance between the two adjacent clamping units in the clamping assembly 6 in the longitudinal direction. It can be understood that when the first moving component 1 is adjusted, the first track 3 and the second track 4 move synchronously, and the diaphragm can be adjusted in the horizontal direction by pulling the clamping component 6; when the second moving component 2 is adjusted, the relative distance between the first track 3 and the second track 4 is changed. When the second moving component 2 is adjusted to make the relative distance between the first track 3 and the second track 4 close, since the two adjacent clamping units respectively cooperate with the first track 3 and the second track 4 to move, the first track 3 and the second track 4 are close, and the distance between the two adjacent clamping units increases, and then the diaphragm is pulled by the clamping component to adjust in the longitudinal direction. In other words, by adjusting the first moving component 1 and / or the second moving component 2, the diaphragm can be adjusted in the horizontal and longitudinal directions. It can be seen that the device for adjusting the stretching ratio of the utility model can achieve high-precision stretching ratio adjustment, and has a reasonable structural design, stable and simple operation, which is conducive to improving production efficiency and product quality.

[0034] The clamping assembly 6 includes a plurality of clamping units, and the clamping unit includes a first slide seat slidably connected to the first track 3, and a second slide seat slidably connected to the second track 4, and the first slide seat and the second slide seat are movably hinged. Two adjacent clamping units are movably hinged. Specifically, the first slide seat includes two pulleys arranged adjacent to each other, and the first track 3 is located between the two slide rails; similarly, the second slide seat includes two pulleys arranged adjacent to each other, and the second track 4 is located between the two slide rails. The relative distance between the first track 3 and the second track 4 is adjusted, and the slide seat slides on the first track 3 or the second track 4 through the pulley, thereby adjusting the distance between the two adjacent holding units.

[0035] Reference Figure 3In some embodiments, the first moving assembly 1 includes: a first driving rod 11, a first connecting portion 12 connected to the first driving rod 11, and a first platform 13 connected to the first connecting portion 12, and the first track 3 is arranged on the first platform 13; the second moving assembly 2 includes: a second driving rod 21, a second connecting portion 22 connected to the second driving rod 21, and a second platform 23 connected to the second connecting portion 22, and the second track 4 is arranged on the second platform 23. The first driving rod 11 can drive the first connecting portion 12 to drive the first platform 13 to move, thereby driving the first track 3 and the second track 4 to move synchronously, thereby realizing the lateral adjustment of the diaphragm; the second driving rod 21 drives the second connecting portion 22 to drive the second platform 23 to move, thereby driving the second track 4 to move, thereby realizing the longitudinal adjustment of the diaphragm. Specifically, in this embodiment, the first driving rod 11 and the second driving rod 21 are screw rods, and the first connecting portion 12 and the second connecting portion 22 are provided with screw nuts that cooperate with the screw rods. By adjusting the screw rods, the structure can be further optimized, and the positioning accuracy is high. In some embodiments, the first driving rod 11 and the second driving rod 21 use ball screws instead of ordinary screws, which can reduce friction and improve transmission efficiency.

[0036] In some embodiments, a first bottom plate 131 and a second bottom plate 132 are provided on the first platform 13, wherein the first bottom plate 131 and the second bottom plate 132 are hinged via a first hinge 133, and the first track 3 is arranged on the first bottom plate 131 and the second bottom plate 132. To cooperate with the bending of the first track 3, the first bottom plate 131 is hingedly cooperated with the first top plate 132, so that the second track 4 can be precisely adjusted in the bending position, thereby further improving the adjustment accuracy of the device.

[0037] Reference Figure 3In some embodiments, a displacement groove 14 is provided on the first platform 13 along the extension direction of the second driving rod 21, and the second connecting portion 22 passes through the displacement groove 14. The second driving rod 21 can drive the second connecting portion 22 to reciprocate in the displacement groove 14. Specifically, a fixing portion 15 is provided on the first platform 13, and the second driving rod 21 is located between the first driving rod 11 and the first platform 13 and is arranged on the first platform 13 through the fixing portion 15. A bearing is provided between the fixing portion 15 and the second driving rod 21, which is used to fix the second driving rod 21 and the first platform 13. In some embodiments, there are two fixing portions 15, which are respectively connected to the two ends of the second driving rod 21, and the second connecting portion 22 is located between the two fixing portions 15, and the second connecting portion 22 passes through the displacement groove 14 to drive the second platform 23 to move. The length of the displacement groove 14 is determined according to the distance between two adjacent clamping units, so that when the second connecting portion 22 reciprocates in the displacement groove 14, the displacement length of the two adjacent clamping units in the longitudinal direction meets the tensile requirements of the product. The whole device structure is made more compact, simple and easy to operate.

[0038] In some embodiments, the second platform 23 includes a first top plate 231 and a second top plate 232 that are movably connected to each other, and the connection between the first top plate 231 and the second top plate 232 is movably connected to the end of the second connecting portion 22 away from the second driving rod 21. It can be understood that when the second adjusting rod is adjusted to move the second platform 23, if the second platform 23 is a whole plate, the degree of movement will be limited. Therefore, the second platform 23 includes a first top plate 231 and a second top plate 232 that are movably connected to each other. When the second platform 23 moves, the first top plate 231 and the second top plate 232 can be rotated so that the displacement of the second platform 23 is easier to drive the second track 4 to move together. The second connecting portion 22 is connected to the connection between the first top plate 231 and the second top plate 232, so that the driving force through the second driving rod 21 can directly act on the connection, so that the adjustment accuracy is higher during the adjustment process.

[0039] In some embodiments, a hinge 233 is provided at the connection between the first top plate 231 and the second top plate 232, and a mobile platform cooperating with the hinge 233 is provided on the second connecting portion 22, and a mobile groove 221 is provided on the mobile platform, and one end of the hinge 233 is embedded in the mobile groove 221 and can move in the mobile groove 221. It can be understood that the hinge 233 between the first top plate 231 and the second top plate 232 can be a bolt. Under different adjustment conditions, such as when discharging at different angles, when the second connecting portion 22 is driven to move by adjusting the second driving rod 21, the hinge 233 will move back and forth toward the mobile groove 221. Further, an annular flange 2331 arranged along the circumferential direction is provided at one end of the hinge 233 embedded in the mobile groove 221, and an annular groove 2211 cooperating with the annular flange 2331 is provided in the mobile groove 221. That is to say, when the second track 4 is bent, the angle of the second track needs to be adjusted. During the adjustment process, the annular flange 2331 of the hinge 233 can cooperate with the annular groove 2211 provided in the moving groove 221, and always move in the annular groove 2211. In order to cooperate with the bending of the second track 4, the first top plate 231 and the second top plate 232 are hingedly matched, so that the second track 4 can be accurately adjusted at the bent position, further improving the adjustment accuracy of the device.

[0040] Reference Figure 1-3In some embodiments, the device further comprises a guide rail 5, on which the first platform 13 is arranged, and the first platform 13 is made to reciprocate along the guide rail 5 by adjusting the first driving rod 11. Specifically, two fixing parts 15 are provided on the guide rail 5, which have the same structure as the fixing parts 15 on which the second driving rod 21 is fixed on the first platform 13, and are used to fix the first driving rod 11 on the guide rail 5. In some embodiments, the guide rail 5 is a hollow square cylinder, and the side of the square cylinder away from the first platform 13 is an open structure. The first driving rod 11 is located in the direction column, and one end of the first connecting part 12 is fixedly connected to the first platform 13, and one end is connected to the first driving rod 11 through the opening structure. Since the weight supported by the first platform 13 is large, a more secure fixing method is required. By making the guide rail 5 a square columnar structure, the first connecting part 12 can cooperate with the guide rail 5 more firmly, thereby improving the overall stability of the device. In some embodiments, a sliding member is provided on the first connecting part 12, and the sliding member is located between the first platform 13 and the guide rail 5. When the first platform 13 moves on the guide rail 5, the friction inside the device can be reduced by setting a sliding member. It can be understood that in order to reduce the friction inside the device, any device that meets the requirements of setting a sliding member can set a sliding member, and the number, size, and type of the sliding member can be selected according to actual needs, which will not be described in detail here.

[0041] In addition, the utility model also discloses a biaxial stretching device, which includes the above-mentioned device for adjusting the stretching ratio. It should be noted that the biaxial stretching device generally includes a plurality of the above-mentioned devices for adjusting the stretching ratio, and the position of the device for adjusting the stretching ratio is preliminarily adjusted according to the specific requirements of the desired stretching diaphragm. When in use, the precision is further adjusted according to the requirements by adjusting each of the devices for adjusting the stretching ratio. This makes the biaxial stretching device have a reasonable structural design, stable and simple operation, and is conducive to improving production efficiency and product quality.

[0042] The above is a specific description of the preferred implementation of the utility model, but the invention of the utility model is not limited to the described embodiments. Technical personnel familiar with the field can also make various equivalent deformations or substitutions without violating the spirit of the utility model. These equivalent deformations or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A device for adjusting a stretching ratio, characterized in that: include: A first moving component, a second moving component and a first track arranged on the first moving component, wherein the second moving component is provided with a second track; When the first moving assembly is adjusted, the first moving assembly can drive the first track and the second track to move synchronously; When the second moving component is adjusted, the second moving component can drive the second track to move, thereby changing the relative distance between the first track and the second track.

2. The device for adjusting the stretching ratio according to claim 1, characterized in that: The first moving assembly includes: a first driving rod, a first connecting portion drivingly connected to the first driving rod, and a first platform connected to the first connecting portion, and the first track is arranged on the first platform; The second moving assembly includes: a second driving rod, a second connecting portion drivingly connected to the second driving rod, and a second platform connected to the second connecting portion, and the second track is arranged on the second platform.

3. The device for adjusting the stretching ratio according to claim 2, characterized in that: A displacement groove is provided on the first platform along the extending direction of the second driving rod, the second connecting portion passes through the displacement groove, and the second driving rod can drive the second connecting portion to reciprocate in the displacement groove.

4. The device for adjusting the stretching ratio according to claim 3, characterized in that: A fixing portion is provided on the first platform, and the second driving rod is located between the first driving rod and the first platform and is disposed on the first platform through the fixing portion.

5. The device for adjusting the stretching ratio according to claim 3, characterized in that: The first platform includes a first bottom plate and a second bottom plate movably connected to each other; the second platform includes a first top plate and a second top plate movably connected to each other, and the connection between the first top plate and the second top plate is movably connected to the second connection portion away from one end of the second driving rod.

6. The device for adjusting the stretching ratio according to claim 5, characterized in that: A first hinge is provided at the connection between the first bottom plate and the second bottom plate; a second hinge is provided at the connection between the first top plate and the second top plate, a movable platform cooperating with the second hinge is provided on the second connecting portion, a movable groove is provided on the movable platform, one end of the second hinge is embedded in the movable groove and can move in the movable groove.

7. The device for adjusting the stretching ratio according to claim 6, characterized in that: An annular flange is provided at one end of the second hinged member embedded in the movable groove, and an annular groove which cooperates with the annular flange and is clamped in the movable groove.

8. The device for adjusting the stretching ratio according to claim 2, characterized in that: It also includes a guide track, the first platform is arranged on the guide track, and the first platform can be made to reciprocate along the guide track by adjusting the first driving rod.

9. The device for adjusting the stretching ratio according to claim 8, characterized in that: A sliding member is provided on the first connecting portion, and the sliding member is located between the first platform and the guide track.

10. A biaxial stretching device, characterized in that: The biaxial stretching device comprises the device for adjusting the stretching ratio according to any one of claims 1 to 9.

Images