CN218429504U

CN218429504U - Lithium battery diaphragm casting device

Info

Publication number: CN218429504U
Application number: CN202222726354.7U
Authority: CN
Inventors: 解安伟; 韦育鲜; 夏向东; 严学君; 谢新春; 朱先进; 马骁
Original assignee: Qinghai Beijie New Materials Technology Co ltd
Current assignee: Qinghai Beijie New Materials Technology Co ltd
Priority date: 2022-10-17
Filing date: 2022-10-17
Publication date: 2023-02-03
Anticipated expiration: 2032-10-17

Abstract

The utility model discloses a lithium battery diaphragm casts piece device, include: fixing the gantry; two vertical fixed square tubes are installed in the fixed portal frame and are respectively connected with the two sides of the fixed portal frame through horizontal fixed square tubes; two opposite sliding chutes are arranged on the opposite inner sides of the two vertical fixed square tubes, and the two sliding chutes are respectively connected with fixed arms at two ends of the air cavity through an adjusting bracket; the wind cavity is of a cylindrical structure, and the front side of the wind cavity is horizontally provided with a wind knife; two sides of the top of the air cavity are connected with two ends of a horizontal air pipe fixed on the upper part of the fixed portal frame through two polyurethane air pipes and two fixing frames, and the middle position of the top of the horizontal air pipe is connected with a fan through an air inlet pipe. The device makes interval between air knife and the chill roll and the angular adjustment who sweeps to the best through setting up adjusting bracket for sheet and chill roll surface are attached, guarantee the homogeneity of the thickness of sheet.

Description

Lithium battery diaphragm casting device

Technical Field

The utility model relates to a lithium battery diaphragm casts piece technical field, concretely relates to lithium battery diaphragm casts piece device.

Background

The lithium battery diaphragm base material mainly comprises polypropylene, polyethylene material and additive; in the production process, the materials are mixed and melted and then flow out of a quenching roller through a die head, the materials are rapidly cooled to below the glass transition temperature of the materials on the quenching roller rotating at a constant speed to form a sheet, and in order to ensure the uniformity of the thickness of the sheet and rapidly cool the sheet, an air knife is usually adopted to blow the sheet; in the existing scheme, the cutter head is generally fixedly installed and cannot be adjusted; for example, the Chinese utility model patent with the publication number of CN204725750U discloses a plastic film production line cast sheet forming device, which comprises a die head, a cast sheet roller, an attached air knife, a water bath, a dewatering mechanism and a clamping roller; the extrusion thickness of the diaphragm is ensured by attaching the air knife, and the temperature of the diaphragm is kept consistent in the cooling process during the casting process, so that the internal structures of the diaphragms are consistent, and the forming quality of the diaphragm is improved; in practical application, the cutter head needs to be adjusted according to the position of the quenching roller and the achieved air pressure, if the cutter head is fixed, the air knife cannot achieve the optimal use effect, the sheet is not attached to the surface of the quenching roller, the thickness of the sheet is not uniform, and the like.

SUMMERY OF THE UTILITY MODEL

To the problem among the prior art, the utility model provides a lithium cell diaphragm casts piece device, include: fixing the gantry; two vertical fixed square tubes are installed in the fixed portal frame and are respectively connected with the two sides of the fixed portal frame through horizontal fixed square tubes; two opposite sliding chutes are arranged on the opposite inner sides of the two vertical fixed square tubes, and the two sliding chutes are respectively connected with fixed arms at two ends of the wind cavity through an adjusting bracket; the air cavity is of a cylindrical structure, the front side of the air cavity is horizontally provided with an air knife, and the air cavity can be connected with the air knife through the two sliding grooves to be adjusted forwards and backwards; the two sides of the top of the air cavity are connected with two ends of a horizontal air pipe fixed on the upper portion of the fixed portal frame through two polyurethane air pipes and two fixing frames, and the middle position of the top of the horizontal air pipe is connected with a fan through an air inlet pipe.

Preferably, a pressure gauge is arranged at the top of the air knife.

Preferably, the lower end of the fixed portal frame is provided with two fixed seats; the length of the fixing seat is larger than the whole width of the cast sheet device, and fixing holes are formed in two ends of the fixing seat.

Preferably, the adjusting bracket comprises a sliding rail arranged in the sliding groove, a horizontal fixing plate connected with the sliding rail, and a lifting screw rod structure vertically installed on the horizontal fixing plate, wherein the lifting screw rod structure comprises a screw rod, a machine body sleeved on the screw rod, and an adjusting handle installed on one side of the machine body; the lower end of the screw rod is provided with a clamping mechanism with an adjusting bolt, and the clamping mechanism clamps a fixed arm at the end part of the air cavity.

Preferably, the spout be provided with a plurality of take internal screw thread regulation holes, be provided with the jackscrew on the regulation hole, the spout both ends are provided with the separation blade that prevents the slide rail and shift out.

Preferably, the lip width of the air knife is 500mm-2000mm, and the opening degree of the lip is less than 2mm.

Preferably, the air inlet of the fan is provided with a high-efficiency filter.

Preferably, the fan is electrically connected with the frequency converter, and the fan adopts an annular blower.

Compared with the prior art, the utility model, following beneficial effect has:

the device enables the space between the air knife and the quench roller and the purging angle to be adjusted to the best through arranging the adjusting support, so that the sheet is attached to the surface of the quench roller, and the thickness uniformity of the sheet is ensured; meanwhile, the air knife is convenient to disassemble and replace and maintain.

Drawings

Fig. 1 is a perspective view of the front side of a lithium battery separator casting device of the present invention;

fig. 2 is a perspective view of the rear side of the lithium battery separator casting device of the present invention;

fig. 3 is a partially enlarged view of an adjusting bracket of the lithium battery separator casting device of the present invention;

fig. 4 is a partial enlarged view of the rear side of the sliding groove of the lithium battery diaphragm casting device of the present invention.

Detailed Description

The drawings in the embodiments of the present invention will be combined; to the technical scheme in the embodiment of the utility model, clearly, describe completely:

as shown in fig. 1-4, in an embodiment of the present invention, a lithium battery separator casting device includes: a fixed gantry 1; two vertical fixed square tubes 2 are arranged in the fixed portal 1, and the two vertical fixed square tubes 2 are respectively connected with two sides of the fixed portal 1 through horizontal fixed square tubes 3; the connecting strength of the two vertical fixed square pipes 2 is improved; two opposite sliding grooves 4 are formed in the opposite inner sides of the two vertical fixed square tubes 2, and the two sliding grooves 4 are respectively connected with fixed arms 21 at two ends of the air cavity 8 through an adjusting bracket; the air cavity 8 is of a cylindrical structure, the front side of the air cavity is horizontally provided with an air knife 6, and the air cavity 8 can be connected with the air knife 6 through the two sliding grooves 4 to be adjusted forwards and backwards; two sides of the top of the air cavity 8 are connected with two ends of a horizontal air pipe 14 fixed on the upper part of the fixed portal 1 through two fixing frames 13 through two polyurethane air pipes 12, and the middle position of the top of the horizontal air pipe is connected with a fan 9 through an air inlet pipe 11; the air knife 6 is supplied with high-pressure air by a fan 9. The polyurethane air pipe 12 is a hose, which is convenient for the movement and adjustment of the air knife 6 and the air cavity 8.

In a specific embodiment of the present invention, the top of the air knife 6 is provided with a pressure gauge 7 for observing the air pressure of the air knife 6.

During the specific use, set up the device in the chilled roll region, can be according to required wind pressure size and chilled roll position, through two spout 4 and adjusting bracket, adjustment air knife 6 aims at the chilled roll, and move to suitable position on, the PE fuse-element that is new flow state through the die head outflow during the casting piece is cooled off to below its glass transition temperature fast on the chilled roll of uniform velocity rotation, form the even glass state casting piece of thickness through blowing and sweeping of air knife 6, and carry out the blank pressing to the sheet both ends, to sheet forced air cooling.

In a specific embodiment of the present invention, the lower end of the fixed gantry 1 is provided with two fixed seats 5; in order to ensure the integral stability and the accuracy of the device, the length of the fixed seat 5 is greater than the integral width of the casting device, fixing holes are formed in two ends of the fixed seat 5, and expansion bolts are arranged on the fixing holes and fixed on the plant ground during use.

In a specific embodiment of the present invention, the adjusting bracket includes a slide rail 15 disposed in the sliding groove 4, a horizontal fixing plate 16 connected to the slide rail 15, and a lifting screw structure vertically installed on the horizontal fixing plate 16, the lifting screw structure includes a screw 17, a machine body 18 sleeved on the screw 17, and an adjusting handle 19 installed on one side of the machine body 18; the lower end of the screw 17 is provided with a clamping mechanism 20 with an adjusting bolt, and the clamping mechanism 20 clamps a fixed arm 21 at the end of the wind cavity.

When the structure is used specifically, the adjusting handle 19 is rotated, and the adjusting handle 19 drives the worm and gear structure in the lifting lead screw machine body 18 to move, so that the lead screw 17 moves up and down, and the up-and-down adjustment of the air cavity 8 and the air knife 6 is realized; the adjusting bolt on the clamping mechanism 20 is loosened, the air cavity 8 and the air knife 6 are rotated, the angle of the air knife 6 can be changed, the optimal blowing angle is achieved, meanwhile, the air knife 6 is convenient to detach, and maintenance is facilitated.

In a specific embodiment of the present invention, the sliding chute 4 is provided with a plurality of adjusting holes 41 with internal threads, the adjusting holes 41 are provided with jackscrews 43, and two ends of the sliding chute 4 are provided with retaining pieces 42 for preventing the sliding rail 15 from moving out; when the device is used, the slide rail 15 is pushed tightly by the jackscrew 43 after the slide rail 15 is moved to a proper position.

In a specific embodiment of the present invention, the lip width of the air knife 6 is 500mm-2000mm, and the lip opening is smaller than 2mm.

In an embodiment of the present invention, the air inlet of the blower 9 is provided with a high efficiency filter 10. The cleanliness of the lithium battery diaphragm after casting is guaranteed.

In a specific embodiment of the present invention, in order to control the fan 9 conveniently, the fan 9 is electrically connected to the frequency converter, and the fan 9 is an annular blower; controlling the wind pressure at 3.3-3.4KPa; the air volume is 15-17m ³ /min。

The above description is only for the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution and the improvement concept of the present invention within the technical scope disclosed in the present invention, and all the technical solutions and the improvement concepts should be covered by the protection scope of the present invention.

Claims

1. A lithium battery separator casting device comprises: fixing the gantry; the method is characterized in that: two vertical fixed square tubes are installed in the fixed portal frame and are respectively connected with the two sides of the fixed portal frame through horizontal fixed square tubes; two opposite sliding chutes are arranged on the opposite inner sides of the two vertical fixed square tubes, and the two sliding chutes are respectively connected with fixed arms at two ends of the wind cavity through an adjusting bracket; the air cavity is of a cylindrical structure, and an air knife is horizontally arranged on the front side of the air cavity; two sides of the top of the air cavity are connected with two ends of a horizontal air pipe fixed on the upper part of the fixed portal frame through two polyurethane air pipes and two fixing frames, and the middle position of the top of the horizontal air pipe is connected with a fan through an air inlet pipe.

2. The lithium battery separator casting device according to claim 1, characterized in that: and a pressure gauge is arranged at the top of the air knife.

3. The lithium battery separator casting device according to claim 1, wherein: the lower end of the fixed portal frame is provided with two fixed seats; the length of the fixing seat is larger than the whole width of the cast sheet device, and fixing holes are formed in two ends of the fixing seat.

4. The lithium battery separator casting device according to claim 1, wherein: the adjusting bracket comprises a sliding rail arranged in the sliding groove, a horizontal fixing plate connected with the sliding rail and a lifting screw rod structure vertically arranged on the horizontal fixing plate, the lifting screw rod structure comprises a screw rod, a machine body sleeved on the screw rod and an adjusting handle arranged on one side of the machine body; the lower end of the screw rod is provided with a clamping mechanism with an adjusting bolt, and the clamping mechanism clamps a fixed arm at the end part of the air cavity.

5. The lithium battery separator casting device according to claim 4, wherein: the spout be provided with a plurality of take internal screw thread regulation holes, be provided with the jackscrew on the regulation hole, the spout both ends are provided with the separation blade that prevents the slide rail and shift out.

6. The lithium battery separator casting device according to claim 1, wherein: the lip width of the air knife is 500mm-2000mm, and the opening degree of the lip is less than 2mm.

7. The lithium battery separator casting device according to claim 2, wherein: and the air inlet of the fan is provided with a high-efficiency filter.

8. The lithium battery separator casting device according to claim 7, wherein: the fan is electrically connected with the frequency converter, and the fan adopts an annular blower.