Winding device

Abstract

The utility model discloses a winding device which comprises a main driving mechanism, a center mechanism and a PIN plate, the center mechanism is used for fixing the PIN plate, the main driving mechanism is used for driving the center mechanism to rotate, the PIN plate is used for winding a base material when rotating along with the center mechanism, the PIN plate is a rectangular plate, a connecting part is arranged on the PIN plate, and the connecting part is used for connecting the PIN plate with the center mechanism. The PIN plate is connected with the tip mechanism through the connecting part, and a circulation groove is formed in the side face of the PIN plate. According to the utility model, the PIN plate is adopted to replace the existing winding needle to wind the battery core, the PIN plate winding mechanism is simple in structure, low in processing cost and low in maintenance cost, the accuracy of the size of the square winding core and the finished product quality of the square winding core are improved, and the problem that the inner diameter of the square winding core is wrinkled when the winding core is shaped into the square winding core by the original winding process is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of battery core processing, in particular to a winding device. Background Art

[0002] The battery is equipped with cells inside. The cells are mainly divided into wound cells and laminated cells. The wound cells are formed by stacking the anode electrode sheet, the separator and the cathode electrode sheet in sequence and winding them around the winding needle in multiple layers. After the wound cell is wound, the anode electrode sheet, the cathode electrode sheet and the separator are cut off at the cutting position by a cutter and the tail is wound, and then the winding of the next wound cell begins.

[0003] The winding needles of the existing winding technology are usually round, oval, or prismatic, and are all split structures, that is, one winding needle is divided into an upper winding needle and a lower winding needle, and both are fixed on the winding main drive mechanism; a winding station and a tail winding station are provided on the winding main drive, and the two are interchangeable and used together; when the upper winding needle or the lower winding needle has problems at the same time or individually and needs to be repaired or changed, it is necessary to stop the machine for manual intervention, and the tightness between the various mechanisms of the winding equipment causes a great waste of time and cost for maintenance personnel, and the upper winding needle or the lower winding needle has high processing accuracy requirements, high processing costs, and great debugging difficulty, and when the upper winding needle and the lower winding needle are used for winding and forming square batteries, wrinkles will appear on both sides of the inner diameter of the winding core. Utility Model Content

[0004] The utility model provides a winding device to solve the problem of wrinkles on the inner diameter of a winding core when the winding core is shaped into a square winding core in the original winding process.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A winding device comprises a main driving mechanism, a top mechanism and a PIN plate, wherein the top mechanism is used to fix the PIN plate, and the main driving mechanism is used to drive the top mechanism to rotate, so that the PIN plate is used to wind a substrate when it rotates with the top mechanism. The PIN plate is a rectangular plate, and a connecting portion is provided on the PIN plate. The PIN plate is connected to the top mechanism through the connecting portion, and a flow groove is provided on the side of the PIN plate.

[0007] As a further improvement of the above technical solution, the connecting portion includes a plurality of pin holes respectively arranged at both ends of the PIN plate, and the top of the top mechanism is provided with a pin rod engaged with the plurality of the pin holes, and the pin rod is used to fix the PIN plate on the top mechanism when engaged with the pin hole.

[0008] As a further improvement of the above technical solution, the connecting portion includes a card slot arranged on the PIN plate, and the card slot is arranged through the central axis of the PIN plate; the top head of the top mechanism is provided with a push rod engaged with the card slot, and the push rod is used to fix the PIN plate on the top mechanism when it is engaged with the card slot.

[0009] As a further improvement of the above technical solution, the shape of the card slot is a polygon, and the polygon includes a rectangle, a parallelogram, a pentagon and a regular hexagon.

[0010] As a further improvement of the above technical solution, the circulation groove is arranged along the length direction of the PIN plate, and the shape of the circulation groove is rectangular or S-shaped.

[0011] As a further improvement of the above technical solution, the top mechanism includes a main drive top assembly and an auxiliary drive top assembly, the top head of the main drive top assembly is connected to one end of the PIN plate, and the top head of the auxiliary drive top assembly is connected to the other end of the PIN plate.

[0012] As a further improvement of the above technical solution, the top mechanism includes an external winding needle threading assembly and a main drive drive assembly, the external winding needle threading assembly is used to drive the two auxiliary drive top assemblies to move along the direction of the PIN plate, and the main drive drive assembly is used to drive the two main drive top assemblies to move along the direction of the PIN plate.

[0013] As a further improvement of the above technical solution, the outer winding needle threading assembly includes a needle withdrawal bracket, a needle threading slider fixed seat and a telescopic cylinder. The needle threading slider fixed seat is slidably connected to the needle withdrawal bracket through a first linear guide rail. The telescopic cylinder is installed on the needle withdrawal bracket. The telescopic cylinder is used to drive the needle threading slider fixed seat to move. The needle threading slider fixed seat is connected to the auxiliary drive top assembly.

[0014] As a further improvement of the above technical solution, the main drive assembly includes a drive fixed seat, a push-shift block and a push-shift cylinder. The push-shift block is slidably connected to the drive fixed seat through a second linear guide rail. The push-shift cylinder is used to drive the push-shift block to move. The push-shift block is connected to the main drive top assembly.

[0015] As a further improvement of the above technical solution, the top mechanism includes at least two, and the winding device also includes a winding shifting mechanism, which is used to drive the two top mechanisms to switch between the winding station and the tail winding station, the winding station is used to wind the substrate core, and the tail winding station is used to carry out the tail winding of the core, the core unloading and the PIN plate loading.

[0016] The beneficial effects of the utility model are as follows: the utility model adopts a PIN plate to replace the existing winding needle for winding the battery core, the PIN plate winding mechanism has a simple structure, low processing cost and low maintenance cost, and improves the accuracy of the square winding core size and the finished product quality of the square winding core, and avoids the wrinkle problem on the inner diameter of the winding core when the original winding process shapes the winding core into a square winding core. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0018] Figure 1 It is a schematic diagram of the assembly of the winding device of the utility model;

[0019] Figure 2 It is a schematic diagram of the top mechanism in the utility model;

[0020] Figure 3 It is a structural schematic diagram of the PIN plate in the first embodiment of the utility model;

[0021] Figure 4 It is a schematic structural diagram of a PIN plate in a second embodiment of the utility model;

[0022] Figure 5 It is a schematic diagram of various structures of the card slot of the PIN board in the second embodiment of the utility model;

[0023] Figure 6 It is a schematic diagram of the outer winding needle threading assembly of the utility model;

[0024] Figure 7 It is a schematic diagram of the main drive assembly in the utility model.

[0025] 1. The first substrate; 2. The second substrate; 3. The third substrate; 4. The main driving mechanism; 5. The rear winding transposition assembly; 6. The main driving top assembly; 61. The main driving spindle; 62. The main driving top head; 63. The main driving top rod; 64. The main driving bearing push block; 7. The auxiliary driving top assembly; 71. The auxiliary driving spindle; 72. The auxiliary driving top head; 73. The auxiliary driving top rod; 74. The auxiliary driving bearing push block; 75. The auxiliary driving spindle sleeve; 8. The outer winding needle threading assembly; 81. The needle withdrawal bracket; 82. The first linear guide rail; 83. The needle threading slider fixed seat; 84. The telescopic cylinder; 9. The outer winding transposition assembly; 10. The main driving drive assembly; 101. The driving fixed seat; 102. The push block; 103. The second linear guide rail; 104. The push cylinder; 11. The PIN plate; 111. The pin hole; 112. The flow groove; 113. The card slot. DETAILED DESCRIPTION

[0026] 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. For example, the fixed connection / installation can be connected by screws, bolts and other accessories, or it can be directly connected by welding, bonding and other methods. The various technical features in the creation of the utility model can be combined interchangeably without conflicting with each other.

[0027] Reference Figure 1 A winding device includes a main driving mechanism 4, a winding transposition mechanism, a top mechanism and a PIN plate 11 (the PIN plate 11 refers to a square core plate inside a battery cell), wherein the top mechanism is used to fix the PIN plate 11, and the main driving mechanism 4 is used to drive the top mechanism to rotate, so the PIN plate 11 is used to wind the substrate when the top mechanism rotates. There are two top mechanisms, and the winding transposition mechanism is used to drive the two top mechanisms to the winding station ( Figure 1 Center A) and tail roll station ( Figure 1 The winding station can be used for bonding the incoming diaphragm materials and winding the core, as well as cutting the incoming diaphragm / electrode materials. The tail winding station can be used for the tail winding of the core material and the tail glue affixed, the core material unloading and the PIN plate 11 loading.

[0028] Specifically, the top mechanism includes a main drive top assembly 6 and an auxiliary drive top assembly 7, the winding transposition mechanism includes an outer winding transposition assembly 9 and a rear winding transposition assembly 5, the outer winding transposition assembly 9 and the auxiliary drive top assembly 7 are mounted on the second substrate 2, and the outer winding transposition assembly 9 is used to drive the two auxiliary drive top assemblies 7 to switch between the winding station and the tail winding station; the rear winding transposition assembly 5 and the main drive top assembly 6 are mounted on the first substrate 1, and the rear winding transposition assembly 5 is used to drive the two main drive top assemblies 6 to switch between the winding station and the tail winding station; the main drive mechanism 4 is mounted on the third substrate 3, and is used to drive the rotation of the two main drive top assemblies 6. The main drive mechanism 4 and the winding transposition mechanism are prior art, and the specific structure is not repeated here.

[0029] Further, refer to Figure 2The auxiliary drive top assembly 7 includes an auxiliary drive main shaft 71, an auxiliary drive bearing push block 74, an auxiliary drive main shaft sleeve 75, an auxiliary drive top head 72 and an auxiliary drive top rod 73, the auxiliary drive main shaft is slidably connected in the auxiliary drive main shaft sleeve 75, the auxiliary drive bearing push block 74 is connected to one end of the auxiliary drive main shaft 71, the auxiliary drive top head 72 is connected to the other end of the auxiliary drive main shaft 71, and the auxiliary drive top rod 73 is fixed on the auxiliary drive top head 72; similarly, the main drive top assembly 6 includes a main drive main shaft 61, a main drive bearing push block 64, a main drive main shaft sleeve, a main drive top head 62 and a main drive top rod 63, the main drive main shaft is slidably connected in the main drive main shaft sleeve, the main drive bearing push block 64 is connected to one end of the main drive main shaft 61, the main drive top head 62 is connected to the other end of the main drive main shaft 61, and the main drive top rod 63 is fixed on the main drive top head 62.

[0030] In this embodiment, the top mechanism further includes an outer winding needle threading assembly 8 and a main drive assembly 10. The outer winding needle threading assembly 8 is used to drive the two auxiliary drive top assemblies 7 to move forward / backward toward the PIN plate 11, and the main drive assembly 10 is used to drive the two main drive top assemblies 6 to move forward / backward toward the PIN plate 11. When the PIN plate 11 needs to be fixed, the auxiliary drive top assembly 7 and the main drive top assembly 6 move toward the PIN plate 11 simultaneously or separately, thereby clamping the PIN plate 11 to fix the PIN plate 11, so as to facilitate the winding of the battery cell.

[0031] Further, refer to Figure 6 The outer winding needle threading assembly 8 includes a needle withdrawal bracket 81, a first linear guide 82, a needle threading slider fixed seat 83 and a telescopic cylinder 84. The needle threading slider fixed seat 83 is slidably connected to the needle withdrawal bracket 81 through the first linear guide 82. The telescopic cylinder 84 is installed on the needle withdrawal bracket 81. The telescopic cylinder 84 is used to drive the needle threading slider fixed seat 83 to move. The needle threading slider fixed seat 83 is connected to the auxiliary drive bearing push block 74, and then when the telescopic cylinder 84 drives the needle threading slider fixed seat 83 to move based on the moving first linear guide 82, it drives the auxiliary drive main shaft 71 to move in the auxiliary drive main shaft sleeve 75, and then drives the auxiliary drive push rod 73 on the auxiliary drive head 72 to move in the direction close to or away from the PIN plate 11.

[0032] Reference Figure 7The main drive driving assembly 10 includes a driving fixed seat 101, a second linear guide 103, a push block 102 and a push cylinder 104. The push block 102 is slidably connected to the driving fixed seat 101 through the second linear guide 103. The push cylinder 104 is used to drive the push block 102 to move. The push block 102 is connected to the main drive bearing push block 64. When the push cylinder 104 drives the push block 102 to move based on the moving second linear guide 103, the main drive spindle 61 is driven to move in the main drive spindle sleeve, thereby driving the main drive push rod 63 on the main drive head 62 to move toward or away from the PIN plate 11.

[0033] In this embodiment, the PIN plate 11 is a rectangular plate, a connecting portion is provided on the PIN plate 11, the PIN plate 11 is connected to the top mechanism through the connecting portion, a flow groove 112 is provided on the side of the PIN plate 11, and the flow groove 112 is arranged along the length direction of the PIN plate 11. The shape of the flow groove 112 is rectangular or S-shaped, which facilitates the infiltration of the electrode diaphragm of the battery cell in the subsequent liquid injection process.

[0034] In the first embodiment, referring to Figure 3 , a plurality of pin holes 111 are provided at both ends of the PIN plate 11, and the pin holes 111 form the connecting portion. The main drive push rod 63 on the main drive head 62 includes a plurality of main drive push rods 63, which are pin rods, and the number of the main drive push rods 63 matches the number of the pin holes 111 at one end of the PIN plate 11. Similarly, the auxiliary drive push rod 73 on the auxiliary drive head 72 includes a plurality of auxiliary drive push rods 73, which are pin rods, and the number of the auxiliary drive push rods 73 matches the number of the pin holes 111 at one end of the PIN plate 11; the main drive push rod 63 is driven by the push cylinder 104 to be inserted into the pin hole 111 at one end of the PIN plate 11, and the auxiliary drive push rod 73 is driven by the telescopic cylinder 84 to be inserted into the pin hole 111 at the other end of the PIN plate 11, thereby fixing the PIN plate 11.

[0035] In the second embodiment, referring to Figure 4 The connecting portion includes a card slot 113 provided on the PIN plate 11, the card slot 113 is provided along the central axis of the PIN plate 11, and the shape of the card slot 113 is polygonal. Figure 5 The polygon includes a rectangle, a parallelogram, a pentagon and a regular hexagon, and other non-circular shapes may also be used; the shapes of the main drive push rod 63 and the auxiliary drive push rod 73 match the shape of the slot 113, and the main drive push rod 63 is driven by the push cylinder 104 to insert into the slot 113 at one end of the PIN plate 11, and the auxiliary drive push rod 73 is driven by the telescopic cylinder 84 to insert into the slot 113 at the other end of the PIN plate 11, thereby fixing the PIN plate 11.

[0036] 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 winding device, characterized in that: It includes a main driving mechanism, a top mechanism and a PIN plate. The top mechanism is used to fix the PIN plate. The main driving mechanism is used to drive the top mechanism to rotate, so the PIN plate is used to wind the substrate when it rotates with the top mechanism. The PIN plate is a rectangular plate. A connecting part is arranged on the PIN plate. The PIN plate is connected to the top mechanism through the connecting part. A flow groove is arranged on the side of the PIN plate.

2. A winding device according to claim 1, characterized in that: The connecting part includes a plurality of pin holes respectively arranged at both ends of the PIN plate, and the top of the top mechanism is provided with a pin rod engaged with the plurality of the pin holes, and the pin rod is used to fix the PIN plate on the top mechanism when engaged with the pin holes.

3. A winding device according to claim 1, characterized in that: The connecting part includes a slot arranged on the PIN plate, and the slot is arranged through along the central axis of the PIN plate; the top of the top mechanism is provided with a push rod engaged with the slot, and the push rod is used to fix the PIN plate on the top mechanism when engaged with the slot.

4. A winding device according to claim 3, characterized in that: The shape of the card slot is a polygon, and the polygon includes a rectangle, a parallelogram, a pentagon and a regular hexagon.

5. A winding device according to claim 2 or 4, characterized in that: The flow slot is arranged along the length direction of the PIN plate, and the shape of the flow slot is rectangular or S-shaped.

6. A winding device according to claim 5, characterized in that: The top mechanism comprises a main drive top assembly and an auxiliary drive top assembly, the top head of the main drive top assembly is connected to one end of the PIN plate, and the top head of the auxiliary drive top assembly is connected to the other end of the PIN plate.

7. A winding device according to claim 6, characterized in that: The top mechanism includes an outer winding needle threading assembly and a main drive assembly, wherein the outer winding needle threading assembly is used to drive the two auxiliary drive top assemblies to move along the PIN plate direction, and the main drive assembly is used to drive the two main drive top assemblies to move along the PIN plate direction.

8. A winding device according to claim 7, characterized in that: The outer winding needle threading assembly includes a needle withdrawal bracket, a needle threading slider fixed seat and a telescopic cylinder. The needle threading slider fixed seat is slidably connected to the needle withdrawal bracket through a first linear guide rail. The telescopic cylinder is installed on the needle withdrawal bracket. The telescopic cylinder is used to drive the needle threading slider fixed seat to move. The needle threading slider fixed seat is connected to the auxiliary drive top assembly.

9. A winding device according to claim 7, characterized in that: The main drive assembly includes a drive fixed seat, a push-shift block and a push-shift cylinder. The push-shift block is slidably connected to the drive fixed seat through a second linear guide rail. The push-shift cylinder is used to drive the push-shift block to move. The push-shift block is connected to the main drive top assembly.

10. A winding device according to claim 5, characterized in that: The top mechanisms include at least two, and the winding device also includes a winding shifting mechanism, which is used to drive the two top mechanisms to switch between a winding station and a tail winding station. The winding station is used to wind the substrate core, and the tail winding station is used to carry out the tail winding of the core, unloading the core and loading the PIN plate.

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