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CN-122008521-A - Wet diaphragm vacuum cover matched with extrusion die head and roller

CN122008521ACN 122008521 ACN122008521 ACN 122008521ACN-122008521-A

Abstract

The invention provides a wet diaphragm vacuum cover matched with an extrusion die head and a roller, which comprises a fixed plate connected to the front side of the extrusion die head, wherein the fixed plate is connected with a vacuum chamber folded plate, the inner side and the outer side of the vacuum chamber folded plate are folded downwards to form a bottom opening structure, the top surface of the vacuum chamber folded plate is communicated with an air suction pipe, the air suction pipe is externally connected with a vacuum pumping device, the left end and the right end of the vacuum chamber folded plate are connected with side plates in a sealing way, the inner side of the vacuum chamber folded plate is sequentially connected with an outer guide plate and an inner guide plate, the surface of the inner guide plate is provided with a series of small holes, the front side of the vacuum chamber folded plate is connected with an L-shaped connecting plate, the front side of the L-shaped connecting plate is vertically provided with a strip hole, a screw penetrates through the strip hole and is matched with a nut to be connected with an adjusting plate, the top surface of the L-shaped connecting plate is connected with an adjusting screw, the bottom end of the adjusting screw is connected with the adjusting plate, the adjusting plate is lifted up and down through the adjusting screw, the bottom end of the adjusting plate is connected with a sealing sheet, and the sealing sheet is close to the roller. The invention improves the quality and the production efficiency of the diaphragm.

Inventors

  • LIANG BIN
  • LIU PEIHE
  • DAI WEICHAO
  • JIN ZHIYANG

Assignees

  • 浙江精诚时代科技股份有限公司

Dates

Publication Date
20260512
Application Date
20260129

Claims (6)

  1. 1. The wet diaphragm vacuum cover matched with the extrusion die head and the roller is characterized by comprising a fixed plate (3) connected to the front side of the extrusion die head, wherein the fixed plate (3) is connected with a vacuum chamber folded plate (4), the inner side and the outer side of the vacuum chamber folded plate (4) are downwards folded to form a bottom opening structure, the width of the vacuum chamber folded plate (4) corresponds to the width of the extrusion die head, the top surface of the vacuum chamber folded plate is communicated with an air suction pipe (5), the air suction pipe (5) is externally connected with a vacuumizing device, the left end and the right end of the vacuum chamber folded plate (4) are hermetically connected with side plates (6), the inner side surface of the vacuum chamber folded plate (4) is sequentially connected with an outer guide plate (7) and an inner guide plate (8), the surface of the outer guide plate (7) is pasted with oil absorbing paper, the surface of the inner guide plate (8) is provided with a series of small holes, the front side surface of the vacuum chamber folded plate (4) is connected with an L-shaped connecting plate (9), the front side surface of the L-shaped connecting plate (9) is vertically provided with a strip hole, the front side surface is communicated with an air suction pipe (5), the air suction pipe (10) passes through the strip hole and then is connected with an adjusting screw (11), the adjusting plate (12) through the strip hole, the screw (10), the adjusting plate (12) is connected with the bottom end (13) through the adjusting plate (13), a gap is reserved between the sealing sheet (14) and the roller.
  2. 2. A wet diaphragm vacuum cover matched with an extrusion die head and a roller for use according to claim 1, wherein the size of a vacuum chamber formed by the inner periphery of the vacuum chamber folded plate (4) is reduced from top to bottom, the outer contour of the outer guide plate (7) corresponds to the inner contour of the vacuum chamber folded plate (4), the outer contour of the inner guide plate (8) corresponds to the inner contour of the outer guide plate (7), and the inner guide plate (8) and the outer guide plate (7) are inserted into and pulled out from the side surface of the vacuum chamber folded plate (4).
  3. 3. The wet diaphragm vacuum cover matched with the extrusion die head and the roller for use according to claim 1, wherein nuts are arranged on the top surface and the ground of the L-shaped connecting plate (9), and an adjusting screw (13) passes through the L-shaped connecting plate (9) and is kept locked and limited by tightening an upper nut and a lower nut.
  4. 4. The wet diaphragm vacuum cover matched with the extrusion die head and the roller for use according to claim 1, wherein the upper part of the air suction pipe (5) is bent at an angle of 80-90 degrees.
  5. 5. The wet diaphragm vacuum cover matched with the extrusion die head and the roller for use according to claim 1, wherein the surfaces of the vacuum chamber folded plate (4), the inner deflector (8) and the outer deflector (7) are sprayed with oleophobic materials.
  6. 6. A wet diaphragm vacuum casing for use with an extrusion die, a roll, as set forth in claim 1, wherein the gap between the sealing sheet (14) and the roll (2) is 0.5-1.5 mm.

Description

Wet diaphragm vacuum cover matched with extrusion die head and roller Technical Field The invention relates to the technical field of extrusion die head production, in particular to a wet diaphragm vacuum cover matched with an extrusion die head and a roller. Background The wet diaphragm production is an advanced manufacturing process of lithium ion battery diaphragm, ultra-high molecular weight polyethylene (UHIMIWPE) and a diluent (paraffin oil) are melted at high temperature to form a homogeneous solution, and solid-liquid phase separation occurs when the temperature is reduced to form a bicontinuous structure of polymer rich phase and diluent rich phase. And (3) after biaxial stretching, removing the diluent by solvent extraction to form the membrane with the micropore structure. In the production process, the molding quality of the separator directly affects the performance and safety of the battery. However, in the conventional wet separator production process, there are problems such as bubbles easily occurring on the surface of the separator, uneven thickness, uneven solvent evaporation, etc., which may result in degradation of the separator quality, affecting the performance and life of the battery. Wet diaphragm production requires an extrusion die and a roller, and therefore, a vacuum hood matched with the extrusion die and the roller needs to be developed to eliminate the instability factors. Disclosure of Invention Aiming at the problems, the invention aims to provide a wet diaphragm vacuum cover which is matched with an extrusion die head and a roller for use, and the forming of the diaphragm is ensured by arranging a vacuumizing area at the front side of the extrusion die head and discharging white oil volatile oil smoke. The technical scheme of the invention is that the wet diaphragm vacuum cover matched with an extrusion die head and a roller comprises a fixed plate connected to the front side of the extrusion die head, wherein the fixed plate is connected with a vacuum chamber folded plate, the inner side and the outer side of the vacuum chamber folded plate are folded downwards to form a bottom opening structure, the width of the vacuum chamber folded plate corresponds to the width of the extrusion die head, the top surface of the vacuum chamber folded plate is communicated with an air suction pipe, the air suction pipe is externally connected with a vacuumizing device, the left end and the right end of the vacuum chamber folded plate are connected with side plates in a sealing manner, the inner side of the vacuum chamber folded plate is sequentially connected with an outer guide plate and an inner guide plate, oil absorbing paper is adhered to the surface of the outer guide plate, a series of small holes are formed in the surface of the inner guide plate, the front side of the vacuum chamber folded plate is connected with an L-shaped connecting plate, the front side of the L-shaped connecting plate is vertically provided with strip holes, the L-shaped connecting plate is connected with an adjusting plate through nuts after penetrating through the strip holes, the top surface of the L-shaped connecting plate is connected with an adjusting screw, the bottom end of the adjusting plate is connected with the adjusting plate through the adjusting screw, the adjusting plate is lifted up and down, the adjusting plate is connected with a sealing sheet through the adjusting screw, and a gap is reserved between the sealing sheet and the roller. Preferably, the size of the vacuum chamber formed by the inner periphery of the folded plate of the vacuum chamber is reduced from top to bottom, the outer contour of the outer guide plate corresponds to the inner contour of the folded plate of the vacuum chamber, the outer contour of the inner guide plate corresponds to the inner contour of the outer guide plate, and the inner guide plate and the outer guide plate are inserted into and pulled out from the side surfaces of the folded plate of the vacuum chamber. Preferably, nuts are arranged on the top surface of the L-shaped connecting plate and the ground, and the adjusting screw penetrates through the L-shaped connecting plate and then is locked and limited through tightening of the upper nut and the lower nut. Preferably, the upper part of the air suction pipe is bent, and the bending angle is 80-90 degrees. Preferably, the surfaces of the folded plate of the vacuum chamber, the inner guide plate and the outer guide plate are sprayed with oleophobic materials. Preferably, the gap between the sealing sheet and the roller is 0.5-1.5 mm. According to the invention, the vacuumizing area is arranged at the front side of the extrusion die head, so that the white oil volatilizes oil smoke, the forming process of the diaphragm is assisted, and the quality and the production efficiency of the diaphragm are improved. Drawings FIG. 1 is a schematic diagram of the structure of the present invention; FIG. 2 is a sche