Battery diaphragm cutting device

Abstract

The utility model discloses a battery diaphragm cutting device which comprises a base, a support fixed to the top of the base, two clamping bases installed in the support in a sliding mode, two clamping heads fixed to the two clamping bases respectively and symmetrically arranged, and a screw connected with the two clamping bases in a forward and reverse threaded mode. The chuck comprises a conical sleeve and a conical nut, the conical sleeve is sleeved with the conical nut in a threaded mode, the conical sleeve is composed of a conical part and a cylindrical part, external threads are arranged on the outer circumferential face of the conical part, a resistance wire through hole is formed in the center of the conical part and the center of the cylindrical part, the conical part is provided with at least one radial opening, and the radial opening is communicated with the resistance wire through hole. And the cylindrical part is fixedly connected with the clamping seat through a fixing block. According to the device, the distance between two clamping points of the resistance wire can be conveniently adjusted, so that the device is suitable for cutting diaphragms with different widths; and the resistance wire is clamped through the cooperation of the open conical sleeve and the nut, so that the clamping of the resistance wire is more stable.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium ion batteries, in particular to a battery diaphragm cutting device. Background Art

[0002] The semi-automatic winding machine is a device used in the battery diaphragm winding process. Its working process is as follows: the positive electrode sheet, the negative electrode sheet and the separator are rolled together by the winding needle mechanism of the winding machine. The adjacent positive and negative electrode sheets are isolated by the separator to avoid short circuit. After the winding is completed, the separator is cut by the cutting device. Chinese patent CN 218018974 U discloses a new type of battery diaphragm cutting device for a semi-automatic winding machine. By cutting the diaphragm with a heating resistance wire, it can well ensure that the diaphragm is cut and neat. However, the patent is inconvenient to operate, and the use of a clamping disc to clamp the resistance wire has the problem of loose clamping and easy sliding of the resistance wire. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a battery diaphragm cutting device.

[0004] The technical solution adopted by the utility model is:

[0005] A battery diaphragm cutting device comprises a base, a bracket fixed on the top of the base, two clamping seats slidably installed in the bracket, two chucks respectively fixed on the two clamping seats and symmetrically arranged, and a screw connecting the two clamping seats with forward and reverse threads, the chuck comprises a conical sleeve and a conical nut threadedly sleeved on the conical sleeve, the conical sleeve consists of a conical portion and a cylindrical portion, the outer circumferential surface of the conical portion is provided with an external thread, the central portions of the conical portion and the cylindrical portion are provided with a resistance wire through hole, the conical portion is provided with at least one radial opening, the radial opening is connected with the resistance wire through hole, and the cylindrical portion is fixedly connected to the clamping seat through a fixing block.

[0006] Furthermore, the base is T-shaped.

[0007] Furthermore, the bracket is U-shaped, and its two side walls are rotatably connected to the screw rods.

[0008] Furthermore, two guide rails are provided on the upper side of the bottom plate of the bracket, and the two guide rails are symmetrically distributed on both sides of the screw rod, and the two clamping seats are slidably connected to the bracket through the two guide rails.

[0009] Furthermore, the screw is a bidirectional screw, the first clamping seat is provided with a forward thread adapted to the bidirectional screw, and the second clamping seat is provided with a reverse thread adapted to the bidirectional screw.

[0010] Furthermore, a conical threaded through hole is provided in the central portion of the conical nut, and the conical threaded through hole is adapted to the external thread of the conical portion of the conical sleeve.

[0011] Beneficial effects of the utility model:

[0012] 1. By rotating the bidirectional screw to adjust the distance between the two clamping seats, the distance between the two clamping points of the resistance wire can be easily adjusted to adapt to the cutting of diaphragms of different widths.

[0013] 2. The resistance wire is clamped more firmly by the open conical sleeve and nut. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural diagram of the battery diaphragm cutting device of the present application.

[0015] Figure 2 for Figure 1 Top view of the .

[0016] Figure 3 This is a diagram of the chuck structure of this application.

[0017] Figure 4 This is a structural diagram of the conical sleeve of this application.

[0018] Figure 5 This is a structural diagram of the tapered nut of this application.

[0019] Figure 6 This is a structural diagram of the clamping seat of this application. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings and a preferred implementation manner.

[0021] See also Figure 1-Figure 6 A battery diaphragm cutting device includes a base 1, a bracket 2, a clamping seat 3, a clamping head 4 and a screw 5.

[0022] The base 1 can be made of insulating material and has a T-shaped structure. The base 1 is used to fix the cutting device on the semi-automatic winding machine. The base 1 made of insulating material can play an insulating role after the resistance wire is energized to prevent the current from being transmitted to the semi-automatic winding machine. The insulating material can be polytetrafluoroethylene and hard plastic.

[0023] The bracket 2 is a U-shaped structure consisting of a bottom plate and two side plates. Two guide rails 6 are arranged on the upper side of the bottom plate along its length direction. Two through holes are coaxially opened in the center of the two side plates. Ball bearings are installed in the through holes. The two guide rails 6 are symmetrically arranged along the line connecting the two through holes. The bracket 2 can be made of the same material as the base 1, or a metal material. When the bracket 2 and the base 1 are made of the same material, the bracket 2 and the base 1 can be welded; when the bracket 2 and the base 1 are made of different materials, the bracket 2 and the base 1 can be connected by screws.

[0024] The screw rod 5 is a bidirectional left-right rotating screw rod, and its two ends are smooth rods. The smooth rods at both ends of the screw rod pass through the ball bearings on the two side plates of the bracket 2 respectively and can be rotatably arranged on the bracket 2. A handle is arranged at one end of the screw rod to facilitate the rotation of the screw rod.

[0025] There are two clamping seats 3 with the same structure. The clamping seats are rectangular, and a slide groove 32 adapted to the guide rail 6 is provided at the bottom thereof, and a threaded hole 31 is provided at the center thereof, wherein the threaded hole of one clamping seat 3 is a left-handed thread, and the threaded hole of the other clamping seat is a right-handed thread. The two clamping seats are respectively connected to the left-handed threaded portion and the right-handed threaded portion of the screw 5 through the threaded hole at the center thereof, and the two slide grooves at the bottom of the clamping seat 3 are respectively slidably connected to the two guide rails 6. The screw is rotated by the handle, and when it is rotated in the forward direction, the two clamping seats are close to each other, and the cutting resistance wire becomes shorter; when it is rotated in the reverse direction, the two clamping seats are separated, and the cutting resistance wire becomes longer.

[0026] There are two chucks 4 with the same structure, including a conical sleeve 41, a conical nut 42 and a fixing block 43. The conical nut 42 is threadedly sleeved on the conical sleeve 42, and the conical sleeve 42 is fixedly mounted on the clamp seat 3 through its cylindrical portion. The two chucks 4 are symmetrically arranged, and the resistance wire through hole 411 in the center is coaxial.

[0027] The conical sleeve 41 consists of a conical portion and a cylindrical portion that are coaxially connected. A resistance wire through hole 411 is provided in the central portion of the conical portion and the cylindrical portion. An external thread is provided on the outer circumferential surface of the conical portion. The conical portion is provided with four radial openings 412. The four radial openings 412 are evenly distributed along the circumferential direction and are all connected to the resistance wire through hole 411.

[0028] The center of the conical nut 42 is provided with a conical threaded through hole 421, which is adapted to the small end of the conical portion of the conical sleeve. That is, when the conical nut 42 is threadedly sleeved on the conical sleeve 41, the end face of the conical nut 42 is flush with the small end face of the conical sleeve, and when the conical nut 42 is continuously rotated, the size of the four radial openings 412 of the conical sleeve 41 becomes smaller, and the diameter of the resistance wire through hole 411 becomes smaller.

[0029] When the utility model is used, first, loosen the conical nut 42 to allow the two ends of the resistance wire to pass through the resistance wire through holes 411 of the two chucks 4 respectively; then, rotate the screw 5 to adjust the distance between the two chucks 4; after adjusting the distance, tighten the conical nut 42 to allow the conical sleeve 41 to clamp and fix the resistance wire.

[0030] The above is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention, and these improvements and modifications are also within the protection scope of the present invention.

Claims

1. A battery diaphragm cutting device, characterized in that: The invention comprises a base (1), a bracket (2) fixed on the top of the base (1), two clamping seats (3) slidably mounted in the bracket (2), two clamping heads (4) respectively fixed on the two clamping seats (3) and arranged symmetrically, and a screw (5) threadedly connected to the two clamping seats (3) in forward and reverse directions, the clamping head (4) comprising a conical sleeve (41) and a conical nut (42) threadedly sleeved on the conical sleeve (41), the conical sleeve (41) comprising a conical portion and a cylindrical portion, the outer circumferential surface of the conical portion is provided with an external thread, the central portions of the conical portion and the cylindrical portion are provided with a resistance wire through hole (411), the conical portion is provided with at least one radial opening (412), the radial opening (412) is connected with the resistance wire through hole (411), and the cylindrical portion is fixedly connected to the clamping seat (3) via a fixing block (43).

2. A battery diaphragm cutting device according to claim 1, characterized in that: The base (1) is T-shaped.

3. A battery diaphragm cutting device according to claim 1, characterized in that: The bracket (2) is U-shaped, and its two side walls are rotatably connected to the screw rod (5).

4. A battery diaphragm cutting device according to claim 3, characterized in that: Two guide rails (6) are provided on the upper side of the bottom plate of the bracket (2), and the two guide rails are symmetrically distributed on both sides of the screw rod (5). The two clamping seats (3) are slidably connected to the bracket (2) via the two guide rails (6).

5. A battery diaphragm cutting device according to claim 1, characterized in that: The screw (5) is a bidirectional screw, the first clamping seat is provided with a forward thread matching the bidirectional screw, and the second clamping seat is provided with a reverse thread matching the bidirectional screw.

6. A battery diaphragm cutting device according to claim 1, characterized in that: A conical threaded through hole is provided at the center of the conical nut (42), and the conical threaded through hole is adapted to the external thread of the conical portion of the conical sleeve (41).

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