Clamping needle fixing structure, material taking equipment and pole piece processing device

Abstract

The utility model discloses a clamping needle fixing structure, a material taking device and a pole piece processing device, and relates to the technical field of battery processing, the clamping needle fixing structure comprises a clamping needle assembly, a second connecting seat, a first locking structure and a second locking structure, the clamping needle assembly is provided with a first connecting seat, and the first connecting seat is provided with an abutting surface section; the second connecting seat is provided with a first surface section and a second surface section, the normal direction of the first surface section intersects with the normal direction of the second surface section, and the first surface section abuts against the abutting surface section; the first locking structure is respectively connected with the first connecting seat and the second connecting seat, so that the first surface section and the abutting surface section are kept abutting; the second locking structure is connected with the first connecting base and abuts against the second surface section. According to the technical scheme, the risk that the quality of the battery cell is abnormal can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of battery processing, in particular to a clamping needle structure, material taking equipment and a pole piece processing device. Background Art

[0002] Batteries are widely used in various electronic devices, such as mobile phones, laptops, electric motorcycles, electric cars, electric ships, electric airplanes, electric toys, and electric tools, etc. Batteries can be divided into nickel-cadmium batteries, nickel-metal hydride batteries, lithium-ion batteries, and secondary alkaline zinc-manganese batteries.

[0003] For lithium-ion batteries, some technologies require that after the battery cell is rolled into shape by a winding machine, a pair of clamping needles on the material removal equipment are used to remove the circular battery cell and stretch it open to make it flat. However, during the unloading process, the battery cell sometimes has quality abnormalities such as wrinkled anodes and cracked poles. Utility Model Content

[0004] The main purpose of the utility model is to provide a clamping pin fixing structure, so as to help reduce the risk of quality abnormalities of the battery core.

[0005] In order to achieve the above-mentioned purpose, the clamping needle fixing structure proposed by the utility model comprises:

[0006] A needle clamping assembly, wherein the needle clamping assembly is provided with a first connecting seat, and the first connecting seat is provided with an abutting surface section;

[0007] A second connecting seat, wherein the second connecting seat is provided with a first surface segment and a second surface segment, the normal direction of the first surface segment intersects with the normal direction of the second surface segment, and the first surface segment abuts against the abutting surface segment;

[0008] a first locking structure, the first locking structure being connected to the first connecting seat and the second connecting seat respectively so that the first surface segment and the abutting surface segment are kept in abutment with each other;

[0009] A second locking structure, wherein the second locking structure is connected to the first connecting seat, and the second locking structure abuts against the second surface segment.

[0010] A first connecting seat is provided on the clamping needle assembly, and an abutting surface segment is provided on the first connecting seat, and a first surface segment and a second surface segment are provided on the second connecting seat, wherein the normal direction of the first surface segment intersects with the normal direction of the second surface segment, and the first surface segment abuts the abutting surface segment, and then the first locking structure is used to respectively connect the first connecting seat and the second connecting seat so that the first surface segment and the abutting surface segment remain abutted, the second locking structure is connected to the first connecting seat, and the second locking structure abuts the second surface segment, the first surface segment and the abutting surface segment can be abutted to calibrate the horizontality of the clamping needle assembly, and the first locking structure and the second locking structure are used to improve the connection stability between the clamping needle assembly and the fixed seat, thereby improving the stability of the horizontality of the clamping needle assembly, even if the clamping needle assembly is subjected to greater force during the entire operation process, the looseness between the clamping needle assembly and the second connecting seat can be reduced, so that the stability of the horizontality of the clamping needle assembly is improved; when the clamping needle fixing structure is used for material picking equipment, the processing quality of the battery cell can be improved, and quality abnormalities such as anode wrinkling and pole piece cracking can be avoided after the battery cell is unloaded. In addition, by utilizing the first surface segment and the abutment surface segment to abut against each other to calibrate the horizontality of the clamping needle assembly, the user does not need to use a ruler for adjustment, thereby simplifying the operation process and improving work efficiency.

[0011] Optionally, the second locking structure includes a first connecting hole and a first screw, one end of the first connecting hole extends to the side of the first connecting seat facing the second surface segment, and the other end of the first connecting hole extends to the side of the first connecting seat away from the second surface segment; the first screw is connected to the first connecting seat through the first connecting hole, and the end of the first screw abuts against the second surface segment. The clamping needle assembly is connected to the second connecting seat through the first connecting seat, the first connecting hole is provided on the first connecting seat, the first screw passes through the first connecting hole and abuts against the second surface segment of the second connecting seat, and the second locking structure and the first locking structure realize the locking between the clamping needle assembly and the second connecting seat, which can improve the connection stability between the clamping needle assembly and the second connecting seat.

[0012] Optionally, the second connection seat is provided with a third surface segment, and the third surface segment is located on the side of the second connection seat away from the second surface segment; the second locking structure also includes a limiting surface segment, and the limiting surface segment is connected to the abutting surface segment, and the limiting surface segment abuts against the third surface segment. By providing the third surface segment on the side of the second connection seat away from the second surface segment, the limiting surface segment of the second locking structure abuts against the abutting surface segment, which can improve the matching degree between the first connection seat and the second connection seat, thereby improving the installation stability of the clamping pin fixing structure.

[0013] Optionally, the first locking structure includes a second connection hole, a third connection hole and a second screw, wherein the second connection hole is provided on the abutting surface segment, one end of the second connection hole extends to the side of the abutting surface segment facing the first surface segment, and one end of the second connection hole extends to the side of the abutting surface segment away from the first surface segment; the third connection hole is provided on the second connection seat, and one end of the third connection hole extends to the first surface segment. By using the second screw to pass through the first connection hole and the second connection hole, the first connection seat is locked with the second connection seat, so that the first surface segment is kept in contact with the abutting surface segment, so as to improve the stability of the horizontality of the clamping needle assembly.

[0014] Optionally, the length direction of the first connection hole intersects with the length direction of the clamping needle assembly, and the plane formed by the length direction of the first connection hole and the length direction of the clamping needle assembly forms an angle with the length direction of the second connection hole. By using the first connection hole and the first screw in combination, and the second connection hole and the third connection hole in combination with the second screw, the clamping needle assembly is fixed and limited, which can improve the fixing effect of the clamping needle assembly, greatly reduce the risk of the clamping needle assembly being offset, and ensure the stability of the horizontality of the clamping needle assembly, reduce the risk of wrinkling of the pole piece, and improve production quality.

[0015] Optionally, the needle clamp assembly includes a needle clamp body, the first connecting seat also includes a mounting block, one end of the needle clamp body is connected to the mounting block, and the abutment surface segment is arranged on the side of the mounting block along the length direction of the needle clamp body. The first connecting seat is connected to the needle clamp body through the mounting block, and the first connecting seat abuts against the first surface segment of the second connecting seat through the abutment surface segment. By adding the mounting block, the structural strength of the first connecting seat can be ensured, and the connection between the first connecting seat and the needle clamp body can be facilitated.

[0016] Optionally, the mounting block is provided with a fourth connecting hole, and one end of the clamping needle body is connected to the mounting block through the fourth connecting hole; and, one end of the clamping needle body is inserted into the fourth connecting hole, and one end of the clamping needle body is interference fit with the fourth connecting hole; or, the inner wall of the fourth connecting hole is provided with a first threaded structure, and one end of the clamping needle body is provided with a second threaded structure, and the first threaded structure is threadedly connected with the second threaded structure. The mounting block is provided with a fourth connecting hole, and one end of the clamping needle body can be inserted into the fourth connecting hole, and one end of the clamping needle body is interference fit with the fourth connecting hole to achieve a stable connection, which has the advantage of convenient disassembly and assembly; in addition, a first threaded structure can be added at one end of the clamping needle body, and a second threaded structure can be added in the fourth connecting hole, and the clamping needle body is threadedly connected through the first threaded structure and the second threaded structure, which has the advantages of stable connection and convenient disassembly and assembly.

[0017] Optionally, the cross-sectional shape of the needle clamp body is a hexagon, and the distance between any two opposite sides of the hexagon is greater than or equal to 5 mm. By making the distance between any two opposite sides of the hexagonal cross-sectional shape of the needle clamp body greater than or equal to 5 mm, the rigidity of the needle clamp body is increased, the force strength of the needle clamp body is increased, deformation and bending of the needle clamp body are avoided, and the service life of the needle clamp body is extended.

[0018] Optionally, the second connection seat includes a base plate and a fixed plate, one end of the base plate is provided with a protrusion, and the protrusion is connected to the side surface of the fixed plate with the largest area; the side of the fixed plate facing the abutting surface segment forms the first surface segment, the side of the fixed plate facing the mounting block forms the second surface segment, the side surface of the base plate close to the fixed plate forms a third surface segment, the side surface of the fixed plate with the largest area forms a fourth surface segment, and the side surface of the protrusion facing the limiting surface segment forms a fifth surface segment; the third surface segment, the fourth surface segment and the fifth surface segment surround to form a limiting groove, and the limiting surface segment is located in the limiting groove. The limiting surface segment can be placed in the limiting groove so that the limiting surface segment and the limiting groove fit tightly, thereby improving the connection stability between the first connection seat and the second connection seat.

[0019] Optionally, the distance between the first surface segment and the third surface segment of the fixing plate is in the range of 5 mm to 20 mm. By controlling the distance between the first surface segment and the third surface segment of the fixing plate to be in the range of 5 mm to 20 mm, that is, controlling the thickness of the fixing plate, it is possible to ensure that the fixing plate has sufficient strength, thereby improving the connection stability between the first connecting seat and the second connecting seat.

[0020] The utility model also proposes a material picking device, comprising at least two clamping needle fixing structures as described above, the material picking device also includes a driving mechanism, the second connecting seat is connected to the driving mechanism, and the clamping needle assembly of one clamping needle fixing structure is parallel to the clamping needle assembly of another clamping needle fixing structure.

[0021] The utility model also proposes a pole piece processing device, comprising the material taking device as described above, the pole piece processing device also comprising a winding device, the material taking device is used to take and process the product of the winding device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0023] Figure 1 It is a structural schematic diagram of an embodiment of the clamping needle fixing structure of the utility model.

[0024] Figure 2 It is a structural schematic diagram of another perspective of an embodiment of the clamping needle fixing structure of the utility model.

[0025] Figure 3 This is a structural schematic diagram of a needle clamping assembly according to an embodiment of the needle clamping fixing structure of the utility model.

[0026] Description of Figure Numbers:

[0027] Label name Label name 1 Needle clamp assembly 11 First connector 111 Butt surface segment 114 Extension 113 Mounting Block 13 Grooves 12 Clamp body 21 First surface segment 2 Second connector 23 Third surface segment 22 Second surface segment 25 Fixed plate 24 substrate 27 Limit slot 26 Bump 31 Second connection hole 3 The first locking structure 4 Second locking structure 32 The third connecting hole 42 First connecting hole 41 Limiting surface segment

[0028] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0031] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0032] At present, it is necessary to use a pair of clamping needle bodies 12 through material taking equipment to open the battery cell, and open the battery cell from a round shape to a flat shape; for the fixing method of the clamping needle body 12, the side surface of the end of the clamping needle body 12 is generally attached to the surface of the driving mechanism by screws, so as to adjust the clamping needle body 12 to a horizontal state by attaching to the surface of the driving mechanism. Due to the heavy weight of the battery cell, the clamping needle body 12 is subjected to a large force during the entire operation process, and the screws are prone to loosening, resulting in abnormal levelness of the clamping needle body 12, resulting in quality abnormalities such as wrinkling of the anode and cracking of the pole piece after unloading of the battery cell; at this time, the user needs to use a ruler or other measuring parts to adjust the levelness of the clamping needle body 12, and then re-fix the clamping needle body 12; the entire process of the above adjustment takes a long time, consuming a lot of manpower and time.

[0033] Therefore, based on the above considerations, in order to reduce the risk of quality abnormalities in the battery cell. The present application proposes a clamping needle fixing structure, which innovatively sets an abutting surface segment 111 on the first connecting seat 11 of the clamping needle assembly 1, and sets a first surface segment 21 and a second surface segment 22 on the second connecting seat 2. The normal direction of the first surface segment 21 intersects with the normal direction of the second surface segment 22, and the first surface segment 21 abuts against the abutting surface segment 111. The first surface segment 21 and the abutting surface segment 111 can be used to abut against each other to calibrate the horizontality of the clamping needle assembly 1; at the same time, the first locking structure 3 and the second locking structure 4 can be used to improve the connection stability between the clamping needle assembly 1 and the second connecting seat 2, thereby improving the stability of the horizontality of the clamping needle assembly 1; and because the stability of the horizontality of the clamping needle assembly 1 is improved, the risk of quality abnormalities such as anode wrinkling and electrode cracking in the battery cell after unloading can be reduced.

[0034] Next, the clamping needle fixing structure proposed in this application is explained with a specific embodiment. In one embodiment of this application, please refer to Figures 1 to 3The clamping needle fixing structure proposed in the present application includes a clamping needle assembly 1, a second connecting seat 2, a first locking structure 3 and a second locking structure 4. The clamping needle assembly 1 is provided with a first connecting seat 11, and the first connecting seat 11 is provided with a contact surface segment 111; the second connecting seat 2 is provided with a first surface segment 21 and a second surface segment 22, the normal direction of the first surface segment 21 intersects with the normal direction of the second surface segment 22, and the first surface segment 21 is in contact with the contact surface segment 111; the first locking structure 3 is respectively connected to the first connecting seat 11 and the second connecting seat 2, so that the first surface segment 21 and the contact surface segment 111 remain in contact; the second locking structure 4 is connected to the first connecting seat 11, and the second locking structure 4 is in contact with the second surface segment 22.

[0035] In this embodiment, a first connecting seat 11 is provided on the clamping needle assembly 1, and an abutting surface segment 111 is provided on the first connecting seat 11, and a first surface segment 21 and a second surface segment 22 are provided on the second connecting seat 2, wherein the normal direction of the first surface segment 21 intersects with the normal direction of the second surface segment 22, and the first surface segment 21 abuts against the abutting surface segment 111, and then the first locking structure 3 is used to connect the first connecting seat 11 and the second connecting seat 2 respectively, so that the first surface segment 21 and the abutting surface segment 111 are kept in abutment; the second locking structure 4 is connected to the first connecting seat 11, and the second locking structure 4 abuts against the second surface segment 22, and the first surface segment 21 and the abutting surface segment 111 can be used to connect the first connecting seat 11 and the second connecting seat 2 respectively. The surface segment 111 is abutted to calibrate the horizontality of the clamping needle assembly 1, and the first locking structure 3 and the second locking structure 4 are used to improve the connection stability between the clamping needle assembly 1 and the fixing seat, thereby improving the stability of the horizontality of the clamping needle assembly 1; even if the clamping needle assembly 1 is subjected to a large force during the entire operation process, the looseness between the clamping needle assembly 1 and the second connecting seat 2 can be reduced, so that the stability of the horizontality of the clamping needle assembly 1 is improved; in addition, by using the first surface segment 21 and the abutting surface segment 111 to abut to calibrate the horizontality of the clamping needle assembly 1, the user does not need to use a ruler to make adjustments, so as to achieve the purpose of rapid installation, simplify the operation process, and improve work efficiency. In addition, since the stability of the clamping needle fixing structure is improved, the number of times the clamping needle assembly 1 is adjusted is reduced; when the clamping needle fixing structure is used for material removal equipment, it can improve the processing quality of the battery cell and reduce the risk of abnormal quality such as anode wrinkling and pole piece cracking after the battery cell is unloaded.

[0036] Please refer to Figure 1 and Figure 3 In one embodiment of the present application, the second locking structure 4 includes a first connecting hole 42 and a first screw, one end of the first connecting hole 42 extends to a side of the first connecting seat 11 facing the second surface segment 22, and the other end of the first connecting hole 42 extends to a side of the first connecting seat 11 away from the second surface segment 22; the first screw is connected to the first connecting seat 11 through the first connecting hole 42, and the end of the first screw is against the second surface segment 22.

[0037] In this embodiment, the needle clamping assembly 1 is connected to the second connection seat 2 through the first connection seat 11, the first connection hole 42 is provided on the first connection seat 11, the first screw passes through the first connection hole 42 and abuts against the second surface section 22 of the second connection seat 2, and the second locking structure 4 and the first locking structure 3 realize the locking between the needle clamping assembly 1 and the second connection seat 2, which can improve the connection stability between the needle clamping assembly 1 and the second connection seat 2. Specifically, the first screw can be a screw with a diameter of 5 mm, the inner wall of the first connection hole 42 is provided with an internal thread, the first screw is threadedly connected to the first connection hole 42, and the end of the first screw passes through the first connection hole 42 and abuts against the second surface section 22.

[0038] Please refer to Figure 1 and Figure 3 In one embodiment of the present application, the second connecting seat 2 is provided with a third surface segment 23, and the third surface segment 23 is located on the side of the second connecting seat 2 away from the second surface segment 22; the second locking structure 4 also includes a limiting surface segment 41, the limiting surface segment 41 is connected to the abutting surface segment 111, and the limiting surface segment 41 abuts against the third surface segment 23.

[0039] In this embodiment, by setting the third surface segment 23 on the side of the second connecting seat 2 away from the second surface segment 22, the limiting surface segment 41 of the second locking structure 4 abuts against the abutting surface segment 111, which can improve the fit between the first connecting seat 11 and the second connecting seat 2, thereby improving the installation stability of the clamping needle fixing structure.

[0040] Please refer to Figures 1 to 3 In one embodiment of the present application, the first locking structure 3 includes a second connecting hole 31, a third connecting hole 32 and a second screw. The second connecting hole 31 is provided on the abutting surface segment 111, one end of the second connecting hole 31 extends to a side of the abutting surface segment 111 facing the first surface segment 21, and one end of the second connecting hole 31 extends to a side of the abutting surface segment 111 away from the first surface segment 21; the third connecting hole 32 is provided on the second connecting seat 2, and one end of the third connecting hole 32 extends to the first surface segment 21.

[0041] In this embodiment, the first connection seat 11 is locked with the second connection seat 2 by using the second screw to pass through the first connection hole 42 and the second connection hole 31, so that the first surface section 21 is kept in contact with the abutment surface section 111, so as to improve the stability of the horizontality of the clamping needle assembly 1. Specifically, the second screw can be a screw with a diameter of 5 mm, and the second connection hole 31 and the third connection hole 32 are both provided with internal threads, and the second screw is threadedly connected with the second connection hole 31 and the third connection hole 32. It should be noted that the specifications of the first screw and the second screw can be adaptively adjusted according to the size of the first connection seat 11 and the second connection seat 2.

[0042] Please refer to Figures 1 to 3 In one embodiment of the present application, the length direction of the first connecting hole 42 intersects with the length direction of the needle clamping assembly 1, and the plane formed by the length direction of the first connecting hole 42 and the length direction of the needle clamping assembly 1 forms an angle with the length direction of the second connecting hole 31.

[0043] In this embodiment, the first connecting hole 42 is used in conjunction with the first screw, and the second connecting hole 31 and the third connecting hole 32 are used in conjunction with the second screw to achieve fixed limiting of the clamping needle assembly 1, thereby improving the fixing effect of the clamping needle assembly 1 and greatly reducing the risk of displacement of the clamping needle assembly 1. At the same time, the horizontal stability of the clamping needle assembly 1 is ensured, thereby reducing the risk of quality abnormalities such as anode wrinkling and pole piece cracking in the battery cell after unloading, thereby improving production quality.

[0044] Please refer to Figure 3 In one embodiment of the present application, the needle clamp assembly 1 includes a needle clamp body 12, and the first connecting seat 11 also includes a mounting block 113, one end of the needle clamp body 12 is connected to the mounting block 113, and the abutment surface segment 111 is arranged on the side of the mounting block 113 along the length direction of the needle clamp body 12.

[0045] In this embodiment, the first connecting seat 11 is connected to the clamp needle body 12 through the mounting block 113, and the first connecting seat 11 is abutted against the first surface segment 21 of the second connecting seat 2 through the abutment surface segment 111. By adding the mounting block 113, the structural strength of the first connecting seat 11 can be ensured, and the connection between the first connecting seat 11 and the clamp needle body 12 is facilitated.

[0046] Please refer to Figure 3 In one embodiment of the present application, the mounting block 113 is provided with a fourth connecting hole, and one end of the clamping needle body 12 is connected to the mounting block 113 through the fourth connecting hole; one end of the clamping needle body 12 is inserted into the fourth connecting hole, and one end of the clamping needle body 12 is interference fit with the fourth connecting hole.

[0047] In this embodiment, the mounting block 113 is provided with a fourth connection hole, one end of the clamping needle body 12 can be inserted into the fourth connection hole, and one end of the clamping needle body 12 is interference-fitted with the fourth connection hole to achieve a stable connection, which has the advantage of convenient disassembly and assembly. In addition, the mounting block 113 can be connected to an extension section 114, and the fourth connection hole is provided on the extension section 114.

[0048] Please refer to Figure 3 In one embodiment of the present application, a first threaded structure is provided on the inner wall of the fourth connecting hole, a second threaded structure is provided on one end of the clamping needle body 12, and the first threaded structure is threadedly connected to the second threaded structure.

[0049] In this embodiment, by adding a first thread structure at one end of the clamping needle body 12 and adding a second thread structure in the fourth connecting hole, the clamping needle body 12 is threadedly connected through the first thread structure and the second thread structure, which has the advantages of stable connection and convenient disassembly and assembly. The first thread structure can be an external thread structure, and the second thread structure can be an internal thread structure.

[0050] Please refer to Figure 3 In one embodiment of the present application, the cross-sectional shape of the needle clamp body 12 is a hexagon, and the distance between any two oppositely disposed sides of the hexagon is greater than or equal to 5 mm.

[0051] The cross-sectional shape of the existing clamping needle body 12 is generally circular, rectangular or semicircular, and its diameter or thickness is 3.5 mm. In this embodiment, by making the distance between any two oppositely arranged sides of the hexagonal cross-section of the clamping needle body 12 greater than or equal to 5 mm, the purpose of increasing the rigidity of the clamping needle body 12 is achieved, so that the force strength of the clamping needle body 12 is greater, and the risk of deformation and bending of the clamping needle body 12 is reduced, so as to extend the service life of the clamping needle body 12. When the two clamping needle assemblies 1 simultaneously pull the annular battery cell outward and the annular battery cell becomes a flat shape, the cross-sectional shape of the clamping needle body 12 is set to a hexagon, which can make the force condition of the clamping needle body 12 better and can further reduce the risk of deformation and bending of the clamping needle body 12.

[0052] Please refer to Figure 1 and Figure 2 In one embodiment of the present application, the second connecting seat 2 includes a substrate 24 and a fixing plate 25, one end of the substrate 24 is provided with a protrusion 26, and the protrusion 26 is connected to the side surface of the fixing plate 25 with the largest area; the side of the fixing plate 25 facing the abutting surface section 111 forms a first surface section 21, the side of the fixing plate 25 facing the mounting block 113 forms a second surface section 22, the side surface of the substrate 24 close to the fixing plate 25 forms a third surface section 23, the side surface of the fixing plate 25 with the largest area forms a fourth surface section, and the side surface of the protrusion 26 facing the limiting surface section 41 forms a fifth surface section; the third surface section 23, the fourth surface section and the fifth surface section surround to form a limiting groove 27, and the limiting surface section 41 is located in the limiting groove 27.

[0053] In this embodiment, the base plate 24 of the second connecting seat 2 is locked with an external driving mechanism by a third screw to achieve fixation, and the base plate 24 is connected to the fixing plate 25 by a protrusion 26; and the limiting surface segment 41 can be inserted into the limiting groove 27, so that the limiting surface segment 41 is tightly matched with the limiting groove 27, thereby improving the connection stability between the first connecting seat 11 and the second connecting seat 2. Among them, the side surface of the mounting block 113 connected to the abutting surface section 111, the abutting surface section 111 and the limiting surface section 41 surround and form a groove 13, and the limiting surface section 41 forms the bottom wall surface of the groove 13, and the side surface of the mounting block 113 connected to the abutting surface section 111 and the limiting surface section 41 form the side wall surface of the groove 13; the fixing plate 25 is provided with a side of the first surface section 21 which is inserted into the groove 13, the first surface section 21 of the fixing plate 25 abuts against the bottom wall surface of the groove 13, and the second surface section 22 and the third surface section 23 of the fixing plate 25 respectively abut against the side wall surfaces on both sides of the groove 13, which can not only make the force between the fixing plate 25 and the first connecting seat 11 better, but also improve the connection stability of the fixing plate 25 and the first connecting seat 11. In addition, the groove 13 is extended along the length direction of the clamping needle body 12, which is convenient for the first connecting seat 11 to be inserted into the groove 13, and has the advantage of improving installation efficiency; at the same time, the fixing plate 25 and the groove 13 are used to cooperate to limit the clamping needle assembly 1, thereby preventing the clamping needle assembly 1 from rotating relative to the second connecting seat 2.

[0054] Please refer to Figure 1 In one embodiment of the present application, the distance between the first surface segment 21 and the third surface segment 23 of the fixing plate 25 ranges from 5 mm to 20 mm.

[0055] In this embodiment, by setting the distance range between the first surface segment 21 and the third surface segment 23 of the fixing plate 25 to be between 5 mm and 20 mm, the distance between the first surface segment 21 and the third surface segment 23 is the thickness of the fixing plate 25; specifically, the thickness range of the fixing plate 25 can be set to be between 10 mm and 12 mm, which can ensure that the fixing plate 25 has a certain structural strength, thereby improving the connection stability between the first connecting seat 11 and the second connecting seat 2, and at the same time avoid the fixing plate 25 from occupying too much space.

[0056] Please refer to Figures 1 to 3In one embodiment of the present application, the clamping needle fixing structure includes a clamping needle assembly 1, a second connecting seat 2, a first locking structure 3 and a second locking structure 4, the clamping needle assembly 1 is provided with a first connecting seat 11, and the first connecting seat 11 is provided with a contact surface segment 111; the second connecting seat 2 is provided with a first surface segment 21 and a second surface segment 22, the normal direction of the first surface segment 21 intersects with the normal direction of the second surface segment, and the first surface segment 21 abuts against the abutting surface segment 111; the first locking structure 3 is respectively connected to the first connecting seat 11 and the second connecting seat 2, so that the first surface segment 21 and the abutting surface segment 111 remain abutted; the second locking structure 4 is connected to the first connecting seat 11, and the second locking structure 4 abuts against the second surface segment 22. Further, the second locking structure 4 includes a first connection hole 42 and a first screw, one end of the first connection hole 42 extends to the side of the first connection seat 11 facing the second surface segment 22, and the other end of the first connection hole 42 extends to the side of the first connection seat 11 away from the second surface segment 22; the first screw is connected to the first connection seat 11 through the first connection hole 42, and the end of the first screw abuts against the second surface segment 22. Further, the second connection seat 2 is provided with a third surface segment 23, and the third surface segment 23 is located on the side of the second connection seat 2 away from the second surface segment 22; the second locking structure 4 also includes a limiting surface segment 41, the limiting surface segment 41 is connected to the abutting surface segment 111, and the limiting surface segment 41 abuts against the third surface segment 23. Further, the first locking structure 3 includes a second connection hole 31, a third connection hole 32 and a second screw. The second connection hole 31 is provided on the abutting surface segment 111, one end of the second connection hole 31 extends to the side of the abutting surface segment 111 facing the first surface segment 21, and one end of the second connection hole 31 extends to the side of the abutting surface segment 111 away from the first surface segment 21; the third connection hole 32 is provided on the second connection seat 2, and one end of the third connection hole 32 extends to the first surface segment 21. Further, the length direction of the first connection hole 42 intersects with the length direction of the clamp needle assembly 1, and the plane formed by the length direction of the first connection hole 42 and the length direction of the clamp needle assembly 1 forms an angle with the length direction of the second connection hole 31. Further, the clamp needle assembly 1 includes a clamp needle body 12, and the first connection seat 11 also includes a mounting block 113, one end of the clamp needle body 12 is connected to the mounting block 113, and the abutting surface segment 111 is provided on the side of the mounting block 113 along the length direction of the clamp needle body 12. Further, the mounting block 113 is provided with a fourth connection hole, and one end of the clamping needle body 12 is connected to the mounting block 113 through the fourth connection hole; one end of the clamping needle body 12 is inserted into the fourth connection hole, and one end of the clamping needle body 12 is interference-fitted with the fourth connection hole; or the inner wall of the fourth connection hole is provided with a first thread structure, and one end of the clamping needle body 12 is provided with a second thread structure, and the first thread structure is threadedly connected with the second thread structure. Further, the cross-sectional shape of the clamping needle body 12 is a hexagon, and the distance between any two opposite sides of the hexagon is greater than or equal to 5 mm.Further, the second connection seat 2 includes a base plate 24 and a fixing plate 25, one end of the base plate 24 is provided with a protrusion 26, the protrusion 26 is connected to the side surface of the fixing plate 25 with the largest area, the side of the fixing plate 25 facing the abutting surface section 111 forms a first surface section 21, the side of the fixing plate 25 facing the mounting block 113 forms a second surface section 22, the side surface of the base plate 24 close to the fixing plate 25 forms a third surface section 23, the side surface of the fixing plate 25 with the largest area forms a fourth surface section, and the side surface of the protrusion 26 facing the limiting surface section 41 forms a fifth surface section, the third surface section, the fourth surface section and the fifth surface section surround to form a limiting groove 27, and the limiting surface section 41 is located in the limiting groove 27. Further, the distance between the first surface section 21 and the third surface section 23 of the fixing plate 25 ranges from 5 mm to 20 mm.

[0057] The utility model also proposes a material-retrieving device, which includes at least two clamping needle fixing structures as described above. The specific structure of the clamping needle fixing structure refers to the above embodiment. Since the electrical device adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here. Among them, the material-retrieving device also includes a driving mechanism, the second connecting seat 2 is connected to the driving mechanism, and the clamping needle assembly 1 of one clamping needle fixing structure is parallel to the clamping needle assembly 1 of another clamping needle fixing structure.

[0058] In this embodiment, the second connecting seat 2 of the clamping needle fixing structure is attached to the surface of the driving mechanism, and the clamping needle body 12 is adjusted to a horizontal position by abutting the first surface segment 21 and the abutting surface segment 111; after the winding machine rolls the electrode into a battery cell, a material-removing device is required to remove the battery cell with a circular ring shape; specifically, the driving mechanism of the material-removing device is connected with two sets of clamping needle fixing structures, and the clamping needle bodies 12 of the two sets of clamping needle fixing structures need to extend into the middle of the circular ring-shaped battery cell and pull the circular ring-shaped battery cell outward at the same time to become a flat shape.

[0059] The utility model also proposes a pole piece processing device, which includes a material taking device. The specific structure of the material taking device refers to the above embodiment. Since the pole piece processing device adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here. Among them, the pole piece processing device also includes a winding device, and the material taking device is used to take and process the product of the winding device.

[0060] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A clamping needle fixing structure, characterized in that: include: A needle clamping assembly, wherein the needle clamping assembly is provided with a first connecting seat, and the first connecting seat is provided with an abutting surface section; A second connecting seat, wherein the second connecting seat is provided with a first surface segment and a second surface segment, the normal direction of the first surface segment intersects with the normal direction of the second surface segment, and the first surface segment abuts against the abutting surface segment; a first locking structure, the first locking structure being connected to the first connecting seat and the second connecting seat respectively so that the first surface segment and the abutting surface segment are kept in abutment with each other; A second locking structure, wherein the second locking structure is connected to the first connecting seat, and the second locking structure abuts against the second surface segment.

2. The needle clamp fixing structure according to claim 1, characterized in that: The second locking structure includes a first connecting hole and a first screw, one end of the first connecting hole extends to a side of the first connecting seat facing the second surface segment, and the other end of the first connecting hole extends to a side of the first connecting seat away from the second surface segment; the first screw is connected to the first connecting seat through the first connecting hole, and an end of the first screw abuts against the second surface segment.

3. The needle clamp fixing structure according to claim 2, characterized in that: The second connecting seat is provided with a third surface segment, and the third surface segment is located on the side of the second connecting seat away from the second surface segment; the second locking structure also includes a limiting surface segment, and the limiting surface segment is connected to the abutting surface segment, and the limiting surface segment abuts against the third surface segment.

4. The needle clamp fixing structure according to claim 3, characterized in that: The first locking structure includes a second connecting hole, a third connecting hole and a second screw, the second connecting hole is arranged on the abutting surface segment, one end of the second connecting hole extends to the side of the abutting surface segment facing the first surface segment, and one end of the second connecting hole extends to the side of the abutting surface segment away from the first surface segment; the third connecting hole is arranged on the second connecting seat, and one end of the third connecting hole extends to the first surface segment.

5. The needle clamp fixing structure according to claim 4, characterized in that: The length direction of the first connecting hole intersects with the length direction of the needle clamping assembly, and a plane formed by the length direction of the first connecting hole and the length direction of the needle clamping assembly forms an angle with the length direction of the second connecting hole.

6. The needle clamp fixing structure according to claim 3, characterized in that: The needle clamp assembly includes a needle clamp body, the first connecting seat also includes a mounting block, one end of the needle clamp body is connected to the mounting block, and the abutment surface section is arranged on the side of the mounting block along the length direction of the needle clamp body.

7. The needle clamp fixing structure according to claim 6, characterized in that: The mounting block is provided with a fourth connecting hole, and one end of the clamping needle body is connected to the mounting block through the fourth connecting hole; and, One end of the clamp needle body is inserted into the fourth connecting hole, and one end of the clamp needle body is interference fit with the fourth connecting hole; or, The inner wall of the fourth connecting hole is provided with a first thread structure, one end of the clamping needle body is provided with a second thread structure, and the first thread structure is threadedly connected with the second thread structure.

8. The needle clamp fixing structure according to claim 6, characterized in that: The cross-sectional shape of the needle clamp body is a hexagon, and the distance between any two oppositely disposed sides of the hexagon is greater than or equal to 5 mm.

9. The needle clamp fixing structure according to any one of claims 3 to 8, characterized in that: The second connecting seat includes a base plate and a fixed plate, a protrusion is provided at one end of the base plate, and the protrusion is connected to the side surface of the fixed plate with the largest area; the first surface section is formed on the side of the fixed plate facing the abutting surface section, and the second surface section is formed on the side of the fixed plate facing the mounting block; the side surface of the base plate close to the fixed plate forms a third surface section, the side surface of the fixed plate with the largest area forms a fourth surface section, and the side surface of the protrusion facing the limiting surface section forms a fifth surface section; the third surface section, the fourth surface section and the fifth surface section surround to form a limiting groove, and the limiting surface section is located in the limiting groove.

10. The needle clamp fixing structure according to claim 9, characterized in that: The distance between the first surface segment and the third surface segment of the fixing plate ranges from 5 mm to 20 mm.

11. A material taking device, characterized in that: It comprises at least two clamping needle fixing structures as described in any one of claims 1 to 10, the material picking equipment also comprises a driving mechanism, the second connecting seat is connected to the driving mechanism, and the clamping needle assembly of one clamping needle fixing structure is parallel to the clamping needle assembly of another clamping needle fixing structure.

12. A pole piece processing device, characterized in that: Including the material taking equipment as described in claim 11, the pole piece processing device also includes a winding device, and the material taking equipment is used to take and process the product of the winding device.

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