Extrusion blanking device for battery diaphragm production
By designing an extrusion and cutting device for battery separator production, and using adjustment components and monolithic mechanisms to uniformly adjust the thickness and temperature of the separator material, the problem of poor finished product quality caused by uneven thickness and temperature of the separator material in the prior art is solved, and more uniform separator material treatment and higher quality battery separator production are achieved.
Patent Information
- Application Number
- CN202510136593.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-07
- Publication Date
- 2025-04-18
AI Technical Summary
After extrusion, the existing battery separator production equipment has poor quality due to uneven material thickness and temperature, resulting in poor quality of finished products, resulting in deformation and material clumping problems.
An extrusion and unloading device for the production of battery separators is designed, including an adjustment assembly and a monolithic mechanism. The adjustment component pushes, pulls and pulls the diaphragm material through the directional rotation roller and the displacement sensor to adjust the thickness; the whole material mechanism uses electric push rods, push plates, side rollers and compression rollers to flatten, stretch and thickness correction of the diaphragm material to reduce friction resistance.
Through this device, the thickness and temperature uniformity of the separator material are improved, reducing the generation of material clumps and improving the finished product quality of the battery separator.
Smart Images
Figure CN119840131A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of battery diaphragm production, in particular to an extrusion feeding device for battery diaphragm production. Background Art
[0002] Battery separator refers to a layer of separator material between the positive and negative electrodes of the battery. It is a very critical part of the battery and has a direct impact on the safety and cost of the battery. In the extrusion production process of battery separator, it is necessary to use extrusion equipment to melt and cast the raw materials, and then use stretching equipment to pull and stretch to obtain the base film.
[0003] Existing battery diaphragm production equipment directly stretches after extrusion. Since the battery diaphragm material after extrusion is in the form of a square strip in cross section, the uneven force at the edge and the middle during transportation causes uneven thickness and temperature in various places, which in turn causes the diaphragm obtained by subsequent stretching to deform or produce lumps, resulting in poor quality of the finished product. Therefore, it is necessary to propose improvements. Summary of the invention
[0004] The purpose of the present invention is to provide an extrusion feeding device for producing battery separators, so as to solve the problem that the thickness and temperature of the prior art battery separators after extrusion are uneven, resulting in poor quality of the finished product.
[0005] To achieve the above object, the present invention provides the following technical solutions:
[0006] An extrusion feeding device for producing battery diaphragms comprises an extruder, one side of the extruder is fixedly connected to a feeding adjustment mechanism, the feeding adjustment mechanism comprises an adjustment frame, the inner wall of the adjustment frame is fixedly mounted with two groups of parallel conveying rollers, the middle of the conveying rollers is provided with an adjustment component, the adjustment component comprises a movable frame, one side of the movable frame is provided with a plurality of movable grooves, the inner wall of the movable groove is fixedly connected to a direction adjustment motor, the output end of the direction adjustment motor is rotatably connected to a mounting plate, the top of the mounting plate is rotatably connected to a direction adjustment roller.
[0007] As a further solution of the present invention: a fixing plate is fixedly connected to the middle part of the inner wall of the movable groove, a plurality of reset springs are fixedly connected to the bottom inner ring of the mounting plate, the bottom of the reset spring is fixedly connected to the fixing plate, a detection ring is fixedly connected to the bottom edge of the mounting plate, a displacement sensor is fixedly connected to the bottom of the inner wall of the movable groove, and the displacement sensor at the bottom of the detection ring is correspondingly arranged.
[0008] As a further solution of the present invention: the outer wall of the movable frame is slidably connected to a mounting cover, the inner wall of the mounting cover is fixedly connected to a linear motor, and the output end of the linear motor is fixedly connected to the bottom of the movable frame.
[0009] As a further solution of the present invention: the output end of the extruder is fixedly connected with a material-forming mechanism, and the material-forming mechanism includes a docking cover, and through grooves are provided at both ends of the docking cover. The through groove on the side close to the extruder is arranged corresponding to the output end of the extruder, and the through groove on the other end is arranged corresponding to the cavity between the two groups of conveying rollers. Pushing components are arranged on both sides of the inner wall of the docking cover, and the pushing components include an electric push rod, and the output end of the electric push rod is fixedly connected with a pushing plate, and one end of the pushing plate close to the output end of the extruder is set as an inclined surface, and one side of the push plate is rotatably connected to a plurality of pushing rollers.
[0010] As a further solution of the present invention: the inner walls on both sides of the docking cover are rotatably connected to a plurality of side rollers, and the middle part of the docking cover is rotatably connected to two groups of pressing rollers.
[0011] As a further solution of the present invention: the top and bottom of the inner wall of the docking cover are fixedly connected with an air supply cover plate, one side of the air supply cover plate is provided with a plurality of ventilation slots, and one end of the air supply cover plate is fixedly connected with an air supply pipe.
[0012] As a further solution of the present invention: an air supply and temperature regulating mechanism is fixedly installed on one end of the inner wall of the docking cover close to the conveying roller, and the air supply and temperature regulating mechanism includes an air inlet cover, and an air supply groove is opened at the bottom of the air inlet cover. The length direction of the air supply groove is consistent with the length direction of the through groove, and an air inlet pipe is fixedly connected to one side of the air inlet cover.
[0013] As a further solution of the present invention: two parallel shift guide rails are fixedly connected to the top of the inner wall of the air inlet cover, connecting plates are slidably installed on the inner walls of the two shift guide rails, and the bottoms of the two connecting plates are fixedly connected to closing plates, and the two closing plates are slidably connected to the air supply slot.
[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention arranges an adjustment component, utilizes the steering roller to contact and push the diaphragm material, and assists in flattening and stretching the diaphragm material, which is beneficial to improving the uniformity of the thickness of the diaphragm material in all directions, making the thickness of the stretched battery diaphragm more uniform, and reducing the generation of material lumps thereon; the uneven thickness of the diaphragm material causes the reading of the displacement sensor to change, and by analyzing and judging the reading of the displacement sensor, the direction of the steering motor is changed, and then the pushing direction of the steering roller is changed, so as to realize the push-pull traction of the diaphragm material, and then realize the adjustment of its thickness;
[0015] The present invention drives the push plate to move by an electric push rod, and the two sides of the diaphragm material are used to push and limit the diaphragm material, so as to avoid the problem that the diaphragm material is too fluid when it is just extruded, causing the diaphragm material to flow to both sides and cause deformation, resulting in uneven overall width after subsequent stretching. The side rollers are then used to push the edge to correct its edge thickness; the temperature and thickness uniformity of the diaphragm material are corrected before cooling after extrusion;
[0016] The present application delivers air into the air supply cover plate through the air supply pipe, and then delivers it through the ventilation slots, thereby reducing the friction resistance between the diaphragm material and the side rollers and the pressing roller during the transportation process. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 A perspective view of the present invention;
[0018] Figure 2 It is a side cross-sectional view of the material-forming mechanism of the present invention;
[0019] Figure 3 It is a top cross-sectional view of the material-forming mechanism of the present invention;
[0020] Figure 4 It is a side cross-sectional view of the air supply and temperature regulating mechanism of the present invention;
[0021] Figure 5 It is a cross-sectional view of the adjustment assembly of the present invention.
[0022] In the figure: 1. extruder; 2. material organization; 201. docking cover; 202. through groove; 203. push plate; 204. push roller; 205. side roller; 206. clamping roller; 207. air supply cover plate; 208. ventilation slot; 209. air supply pipe; 210. electric push rod; 3. adjustment frame; 4. conveying roller; 5. adjustment component; 501. mounting cover; 502. linear motor; 503. movable frame; 504. mounting plate; 505. adjustment roller; 506. detection ring; 507. reset spring; 508. displacement sensor; 509. adjustment motor; 510. fixing plate; 6. air supply temperature control mechanism; 601. air inlet cover; 602. shift guide rail; 603. closing plate; 604. connecting plate; 605. air inlet pipe. DETAILED DESCRIPTION
[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0024] See also Figure 1In the embodiment of the present invention, an extrusion feeding device for producing a battery diaphragm includes an extruder 1, a feeding adjustment mechanism is fixedly connected to one side of the extruder 1, and the feeding adjustment mechanism includes an adjustment frame 3, and two sets of parallel conveying rollers 4 are fixedly installed on the inner wall of the adjustment frame 3. A cavity for accommodating the passage of the diaphragm material is provided between the two sets of conveying rollers 4, and an adjustment component 5 is provided in the middle of the conveying roller 4. Please refer to Figure 5 The adjustment component 5 includes a movable frame 503, and a plurality of movable grooves are opened on one side of the movable frame 503. The inner wall of the movable groove is fixedly connected to a steering motor 509, and the output end of the steering motor 509 is rotatably connected to a mounting plate 504, and the top of the mounting plate 504 is rotatably connected to a steering roller 505; the steering roller 505 contacts and pushes the diaphragm material to assist in flattening and stretching the diaphragm material, which is beneficial to improving the uniformity of the thickness of the diaphragm material in all directions, making the thickness of the stretched battery diaphragm more uniform and reducing the generation of material lumps thereon.
[0025] In order to detect the thickness of the extruded diaphragm material, a fixing plate 510 is fixedly connected to the middle of the inner wall of the movable groove, a plurality of reset springs 507 are fixedly connected to the inner ring of the bottom of the mounting plate 504, the bottom of the reset spring 507 is fixedly connected to the fixing plate 510, a detection ring 506 is fixedly connected to the bottom edge of the mounting plate 504, a displacement sensor 508 is fixedly connected to the bottom of the inner wall of the movable groove, and the bottom displacement sensor 508 of the detection ring 506 is correspondingly arranged. When the thickness of the diaphragm material is uneven, the mounting plate 504 is pushed to shift, thereby driving the detection ring 506 to move, causing the indication of the displacement sensor 508 to change. By analyzing and judging the indication of the displacement sensor, the direction of the adjustment motor 509 is changed, and then the pushing direction of the adjustment roller 505 is changed, so as to realize the push-pull traction of the diaphragm material and thus realize the adjustment of its thickness.
[0026] See also Figure 2 ,and Figure 3 In order to maintain stable contact and push adjustment for diaphragm materials of different thicknesses after extrusion, the outer wall of the movable frame 503 is slidably connected to the mounting cover 501, and the inner wall of the mounting cover 501 is fixedly connected to the linear motor 502. The output end of the linear motor 502 is fixedly connected to the bottom of the movable frame 503. The movable frame 503 is driven to rise and fall by the linear motor 502, thereby realizing the adjustment of the distance between the two movable frames 503 and each direction adjustment roller 505.
[0027] In order to correct the temperature and thickness uniformity of the diaphragm material before cooling after extrusion, the output end of the extruder 1 is fixedly connected to a material-forming mechanism 2, which includes a docking cover 201. Both ends of the docking cover 201 are provided with through grooves 202. The through groove 202 on one side close to the extruder 1 is arranged corresponding to the output end of the extruder 1, and the through groove 202 on the other end is arranged corresponding to the cavity between the two groups of conveying rollers 4. Pushing components are arranged on both sides of the inner wall of the docking cover 201, and the pushing components include an electric push rod 210. The output end of the electric push rod 210 is fixedly connected to a pushing plate 203. One end of the pushing plate 203 close to the output end of the extruder 1 is set as an inclined surface, and one side of the pushing plate 203 is rotatably connected to a plurality of pushing rollers 204. The pushing plate 203 is driven to move by the electric push rod 210, and the diaphragm material is pushed and limited by both sides to avoid deformation caused by the diaphragm material flowing to both sides due to excessive fluidity of the diaphragm material just after extrusion, so that the overall width is uneven after subsequent stretching is completed.
[0028] Due to the push effect of the push plate 203, the edges of the pushed material are twisted and piled up, resulting in excessive thickness. The inner walls of both sides of the docking cover 201 of the present application are rotatably connected with a plurality of side rollers 205, and the side rollers 205 are used to push the edges to correct the edge thickness;
[0029] Two groups of pressing rollers 206 are rotatably connected to the middle of the docking cover 201 , and the thickness of the diaphragm material is further squeezed and averaged by the rolling pressure of the pressing rollers 206 .
[0030] The top and bottom of the inner wall of the docking cover 201 are fixedly connected with an air supply cover plate 207, and a plurality of ventilation slots 208 are opened on one side of the air supply cover plate 207. An air supply pipe 209 is fixedly connected to one end of the air supply cover plate 207. Air flow is introduced into the air supply cover plate 207 through the air supply pipe 209 and then sent out through the ventilation slots 208, thereby reducing the friction resistance between the diaphragm material and the side rollers 205 and the pressing roller 206 during the transportation process.
[0031] See also Figure 4 An air supply and temperature regulating mechanism 6 is fixedly installed on one end of the inner wall of the docking cover 201 close to the conveying roller 4. The air supply and temperature regulating mechanism 6 includes an air inlet cover 601. An air supply groove is opened at the bottom of the air inlet cover 601. The length direction of the air supply groove is consistent with the length direction of the through groove 202. An air inlet pipe 605 is fixedly connected to one side of the air inlet cover 601. The air inlet pipe 605 and the above-mentioned air supply pipe 209 are fixedly connected to the output end of the external hot air conveying equipment. Through the air supply and temperature regulating mechanism 6, the diaphragm material can be supplementarily heated when necessary to improve the stretching capacity of the diaphragm material.
[0032] In order to adjust the air supply position of the air supply slot, two parallel shift guide rails 602 are fixedly connected to the top of the inner wall of the air inlet cover 601, and the inner walls of the two shift guide rails 602 are slidably installed with connecting pieces 604. The bottoms of the two connecting pieces 604 are fixedly connected with closing plates 603. The two closing plates 603 are slidably connected in the air supply slot, and the connecting pieces 604 are driven by the shift guide rails 602 to move, and then the closing plates 603 are driven to move to close part of the air supply slot, so as to adjust the air supply position of the air supply slot and realize local heating of the diaphragm material. In specific implementation, the temperature of each part of the diaphragm material can be detected by setting a temperature sensor in the docking cover 201, so as to cooperate with the work of the air supply temperature control mechanism 6.
[0033] When the present invention is in use, the diaphragm material extruded by the extruder 1 enters the docking cover 201 through the through groove 202, and the two sides of the diaphragm material are pushed and limited by the pushing of the pushing plates 203 on both sides, and the pushing action of the side rollers 205 is cooperated to prevent the edge of the diaphragm material from being dispersed, and the excess material on the edge is pushed and concentrated to the middle, and then the pushing roller rotates to roll and flatten it, and at the same time assists the transportation and movement of the diaphragm material, and hot air is sent into the diaphragm material by the air supply pipe 209, and air is supplied to the diaphragm material from the upper and lower sides of the diaphragm material, thereby reducing the resistance of the diaphragm material during the transportation process;
[0034] When the diaphragm material passes through the air supply temperature regulating assembly, hot air is sent in by the air inlet pipe 605 and then sent out by the air supply slot to heat the diaphragm material. The closing plate 603 can be driven to move by the shifting guide rail 602 to adjust the air supply position of the air supply slot, thereby changing the temperature of the local position of the diaphragm material, thereby ensuring that the temperature of each part of the diaphragm material is balanced;
[0035] Then the diaphragm material passes through the through groove 202 on the other side and is sent out from the docking cover 201 and enters the cavity. The rotation of the conveying roller 4 drives the diaphragm material to move. When the diaphragm material moves to the position of the adjusting component 5, the contact between the adjusting roller 505 and the diaphragm material drives and assists in pushing it through the rotation of the adjusting roller 505. When the thickness of the diaphragm material is uneven, the mounting plate 504 is pushed to shift, thereby driving the detection ring 506 to move, causing the indication of the displacement sensor 508 to change. By analyzing and judging the indication of the displacement sensor, the direction of the adjusting motor 509 is changed, and then the pushing direction of the adjusting roller 505 is changed, so as to realize the push-pull traction of the diaphragm material and adjust its thickness.
[0036] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.
Claims
1. An extrusion feeding device for battery separator production, characterized in that: The invention comprises an extruder (1), one side of which is fixedly connected to a material discharge adjustment mechanism, the material discharge adjustment mechanism comprising an adjustment frame (3), the inner wall of which is fixedly mounted two groups of parallel conveying rollers (4), the middle of which is provided with an adjustment component (5), the adjustment component (5) comprising a movable frame (503), one side of which is provided with a plurality of movable grooves, the inner wall of which is fixedly connected to a direction adjustment motor (509), the output end of which is rotatably connected to a mounting plate (504), the top of which is rotatably connected to a direction adjustment roller (505).
2. The extrusion feeding device for producing battery separator according to claim 1, characterized in that: A fixing plate (510) is fixedly connected to the middle of the inner wall of the movable groove, and a plurality of return springs (507) are fixedly connected to the inner ring of the bottom of the mounting plate (504), and the bottom of the return spring (507) is fixedly connected to the fixing plate (510).
3. The extrusion feeding device for producing battery separator according to claim 2, characterized in that: A detection ring (506) is fixedly connected to the bottom edge of the mounting plate (504), a displacement sensor (508) is fixedly connected to the bottom of the inner wall of the movable groove, and the displacement sensor (508) at the bottom of the detection ring (506) is correspondingly arranged.
4. The extrusion feeding device for producing battery separator according to claim 1, characterized in that: The outer wall of the movable frame (503) is slidably connected to a mounting cover (501), the inner wall of the mounting cover (501) is fixedly connected to a linear motor (502), and the output end of the linear motor (502) is fixedly connected to the bottom of the movable frame (503).
5. The extrusion feeding device for producing battery separator according to claim 1, characterized in that: The output end of the extruder (1) is fixedly connected to a material-forming mechanism (2), the material-forming mechanism (2) comprises a docking cover (201), both ends of the docking cover (201) are provided with through grooves (202), both sides of the inner wall of the docking cover (201) are provided with a pushing assembly, the pushing assembly comprises an electric push rod (210), and the output end of the electric push rod (210) is fixedly connected to a pushing plate (203).
6. The extrusion feeding device for producing battery separator according to claim 5, characterized in that: One end of the pushing plate (203) close to the output end of the extruder (1) is set as an inclined surface, and one side of the pushing plate (203) is rotatably connected to a plurality of pushing rollers (204).
7. The extrusion feeding device for producing battery separator according to claim 5, characterized in that: The inner walls on both sides of the docking cover (201) are rotatably connected to a plurality of side rollers (205), and the middle part of the docking cover (201) is rotatably connected to two groups of pressing rollers (206).
8. The extrusion feeding device for producing battery separator according to claim 5, characterized in that: The top and bottom of the inner wall of the docking cover (201) are both fixedly connected with an air supply cover plate (207), one side of the air supply cover plate (207) is provided with a plurality of ventilation slots (208), and one end of the air supply cover plate (207) is fixedly connected with an air supply pipe (209).
9. The extrusion feeding device for producing battery separator according to claim 5, characterized in that: An air supply and temperature adjustment mechanism (6) is fixedly installed on one end of the inner wall of the docking cover (201) close to the conveying roller (4), and the air supply and temperature adjustment mechanism (6) comprises an air inlet cover (601), an air supply groove is provided at the bottom of the air inlet cover (601), and an air inlet pipe (605) is fixedly connected to one side of the air inlet cover (601).
10. The extrusion feeding device for producing battery separator according to claim 9, characterized in that: The top of the inner wall of the air inlet cover (601) is fixedly connected to two parallel shift guide rails (602), the inner walls of the two shift guide rails (602) are slidably mounted with connecting plates (604), the bottoms of the two connecting plates (604) are fixedly connected to closing plates (603), and the two closing plates (603) are slidably connected to the air supply slot.