Pole piece dry-method compound machine

Abstract

The utility model relates to the technical field of compounding machines, and provides a pole piece dry-method compounding machine which comprises a bracket, the plurality of discharging rollers are rotationally arranged on the bracket; the pressing part is provided with a pressing gap, the pressing part is arranged on the support, and the materials are used for penetrating through the pressing gap; and the multiple material receiving rollers are arranged on the support, and the pressing piece is located between the discharging roller and the material receiving rollers. According to the technical scheme, the problem that the quality of finished products is poor due to the fact that coiled battery materials are easy to adhere when the compounding machine is used for compounding the battery materials in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of composite machines, and in particular to a pole piece dry-process composite machine. Background Art

[0002] When making batteries, battery pole pieces are an indispensable and important component. They are mainly obtained by adhering or filling the battery material to the substrate and deforming it during the rolling process. The process of rolling the battery pole piece uses the friction generated between the press and the battery pole piece to pull it between the rotating rollers, thereby deforming it. For example, the substrate between the positive and negative poles of a lithium battery is made of copper foil or aluminum foil adhered to the battery material. During the manufacturing process, the upper and lower layers of battery materials need to be attached to the copper foil or aluminum foil. However, when the compounding machine in the prior art is compounding battery materials, the rolled battery materials are prone to adhesion, resulting in poor quality of the finished product. Utility Model Content

[0003] The utility model provides a pole piece dry-process composite machine, which solves the problem in the related art that rolled battery materials are easily adhered when composite battery materials are composited by the composite machine, resulting in poor quality of finished products.

[0004] The technical solution of the utility model is as follows:

[0005] Pole dry lamination machine, including:

[0006] Bracket;

[0007] There are a plurality of unloading rollers, all of which are rotatably arranged on the bracket;

[0008] A pressing piece having a pressing gap, wherein the pressing piece is arranged on the bracket, and the material is used to pass through the pressing gap;

[0009] There are several receiving rollers, all of which are arranged on the bracket, and the pressing piece is located between the unwinding roller and the receiving roller.

[0010] As a further technical solution, the support comprises:

[0011] first mounting frame;

[0012] A second mounting frame is arranged on the first mounting frame, and the unwinding roller, the pressing member and the receiving roller are all rotatably arranged on the first mounting frame;

[0013] The first mounting frame comprises:

[0014] The first mounting member has a plurality of parts and is arranged on the first mounting frame. The plurality of unwinding rollers and the plurality of receiving rollers are rotatably arranged on the first mounting member in correspondence.

[0015] As a further technical solution, the first mounting frame has a plurality of guide protrusions, the first mounting member is slidably arranged on the guide protrusions, and the first mounting member includes:

[0016] A first mounting block having a plurality of first guide grooves, wherein the guide protrusions are slidably arranged in the first guide grooves;

[0017] A first linear driving member, disposed on the first mounting frame, the first linear driving member being used to drive the first mounting block to slide;

[0018] The first rotating driving member is arranged on the first mounting block, and the unwinding roller or the receiving roller is arranged on the first rotating driving member.

[0019] As a further technical solution, the first guide groove has clamping protrusions at both ends, the guide protrusion has clamping grooves on both sides, the clamping protrusions are used to be clamped in the clamping grooves, and the clamping protrusions are slidably arranged in the clamping grooves.

[0020] As a further technical solution, the first mounting frame has two mounting slots, and the second mounting frame includes:

[0021] A second mounting member is disposed in the mounting groove, wherein the second mounting member comprises:

[0022] There are two first mounting platforms, which are arranged in the mounting groove;

[0023] There are two second mounting platforms, which are arranged in the mounting groove;

[0024] Two supporting members are provided on the first mounting frame and are used to support the first mounting platform;

[0025] The pressing piece comprises:

[0026] A first pressing roller, two ends of which are rotatably arranged on the two first mounting tables respectively;

[0027] The second pressing roller, both ends of which are rotatably arranged on the two second mounting platforms respectively, and the first pressing roller and the second pressing roller form the pressing gap.

[0028] As a further technical solution, the second mounting member further includes:

[0029] A second rotation driving member, disposed on the first mounting frame;

[0030] a first connecting shaft, one end of which is arranged on the second rotating driving member, and the other end of which passes through the first mounting platform and is arranged on the first pressing roller;

[0031] A second connecting shaft, one end of which passes through the second mounting platform and is arranged on the second pressing roller;

[0032] A synchronous belt is wound around the first connecting shaft and the second connecting shaft.

[0033] As a further technical solution, the first mounting frame has a third guide groove, and further comprises:

[0034] There are a plurality of rotating wheels, which are rotatably arranged on the first mounting platform. After the rotating wheels rotate, they are used to drive the first mounting platform to slide along the third guide groove.

[0035] As a further technical solution, a plurality of limiters are also included, all of which are arranged on the first mounting frame, and the limiters include:

[0036] A third mounting platform, arranged on the first mounting frame;

[0037] A limiting member is slidably arranged on the third mounting platform, and a limiting gap is formed between the limiting member and the third mounting platform, and the material passes through the limiting gap.

[0038] As a further technical solution, it also includes:

[0039] There are a plurality of guide rollers which are rotatably arranged on the first mounting frame at intervals, and the materials are sequentially wound around the guide rollers.

[0040] As a further technical solution, it also includes:

[0041] A plurality of detection members are provided for being arranged between adjacent guide rollers;

[0042] The detection member comprises:

[0043] A guide rod, arranged on the first mounting frame;

[0044] a second mounting block, slidably disposed on the guide rod;

[0045] A first connecting rod having a first sliding groove and rotatably disposed on the second mounting block;

[0046] A second connecting rod, having a second sliding groove at one end;

[0047] A fastener, used for being slidably disposed in the first slide groove and the second slide groove;

[0048] The detection unit is arranged on the other end of the second connecting rod, and after the fastener slides along the first sliding groove and the second sliding groove, it is used to adjust the detection angle of the detection unit.

[0049] The working principle and beneficial effects of the utility model are:

[0050] In the utility model, in order to solve the problem in the related art that when the composite machine composites the battery material, the battery material is not protected by the plastic film, and the rolled battery material is prone to adhesion, resulting in poor quality of the finished product, the scheme is to first protect the existing battery material with a plastic film before rolling it, and add a number of receiving rollers on the production equipment to recycle the used plastic film, and the recycled plastic film can be reused. In the scheme, there are at least three unwinding rollers and three receiving rollers. Among the three unwinding rollers, one is in the middle and can place the substrate, and the other two are distributed on the upper and lower sides of the middle unwinding roller to place the battery materials on both sides of the substrate. Among the three receiving rollers, one is in the middle and is used to wind the finished product, and the other two are distributed on the upper and lower sides of the middle receiving roller to recycle the plastic film. The unwinding roller is located on one side of the feeding end of the pressing part, and the receiving roller is located on one side of the discharging end of the pressing part. In the scheme, a number of spare rollers can also be designed on the bracket to place the substrate and the battery material, so that the equipment can operate continuously. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0052] Figure 1 It is a schematic diagram of the structure of the utility model;

[0053] Figure 2 for Figure 1 A magnified schematic diagram of point A;

[0054] Figure 3 This is a schematic diagram of the structure of the first mounting member of the utility model;

[0055] Figure 4 This is a front view cross-sectional schematic diagram of the utility model;

[0056] Figure 5 This is a schematic diagram of the structure of the second rotating driving member of the utility model;

[0057] Figure 6 for Figure 1 An enlarged schematic diagram of point B;

[0058] Figure 7 for Figure 5 An enlarged schematic diagram of point C;

[0059] In the figure: 1, bracket, 2, unwinding roller, 3, pressing member, 4, pressing gap, 5, receiving roller, 6, first mounting frame, 7, first mounting member, 8, guide protrusion, 9, first mounting block, 10, first guide groove, 11, first linear driving member, 12, first rotating driving member, 13, clamping groove, 14, clamping protrusion, 15, mounting groove, 16, second mounting member, 17, first mounting platform, 18, second mounting platform, 19, supporting member, 20, first pressing roller, 21, second pressing roller, 22 , second rotating drive member, 23, first connecting shaft, 24, second connecting shaft, 25, synchronous belt, 26, third guide groove, 27, rotating wheel, 28, limiter, 29, third mounting platform, 30, limit member, 31, limit gap, 32, guide roller, 33, detection member, 34, guide rod, 35, second mounting block, 36, first connecting rod, 37, first slide groove, 38, second connecting rod, 39, second slide groove, 40, fastener, 41, detection unit, 42, second mounting bracket. DETAILED DESCRIPTION

[0060] The following will be combined with 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.

[0061] like Figure 1 to Figure 7 As shown, this embodiment proposes

[0062] Pole dry lamination machine, including:

[0063] Bracket 1;

[0064] There are several unloading rollers 2, all of which are rotatably arranged on the bracket 1;

[0065] A pressing piece 3 having a pressing gap 4, the pressing piece 3 is arranged on the bracket 1, and the material is used to pass through the pressing gap 4;

[0066] There are a plurality of receiving rollers 5 , all of which are arranged on the bracket 1 , and the pressing member 3 is located between the unwinding roller 2 and the receiving roller 5 .

[0067] In this embodiment, in order to solve the problem in the related art that the rolled battery materials are prone to adhesion when the composite machine is compounding the battery materials, resulting in poor quality of the finished product, this solution is to protect the existing battery materials with a plastic film before rolling them, and add a number of receiving rollers 5 on the production equipment to recycle the used plastic film, and the recycled plastic film can be reused. In this solution, there are at least three unwinding rollers 2 and three receiving rollers 5. Among the three unwinding rollers 2, one is in the middle and can be used to place the substrate, and the other two are distributed on the upper and lower sides of the middle unwinding roller 2 to place the battery materials on both sides of the substrate. Among the three receiving rollers 5, one is in the middle and is used to wind the finished product, and the other two are distributed on the upper and lower sides of the middle receiving roller 5 to recycle the plastic film. The unwinding roller 2 is located on one side of the feeding end of the pressing part 3, and the receiving roller 5 is located on one side of the discharging end of the pressing part 3. In this solution, a number of spare rollers can also be designed on the bracket 1 to place the substrate and battery materials, so that the equipment can operate continuously.

[0068] Furthermore, the support 1 comprises:

[0069] First mounting frame 6;

[0070] The second mounting frame 42 is arranged on the first mounting frame 6, and the unwinding roller 2, the pressing member 3 and the receiving roller 5 are all rotatably arranged on the first mounting frame 6;

[0071] The first mounting frame 6 comprises:

[0072] The first mounting member 7 has a plurality of members and is disposed on the first mounting frame 6 , and the plurality of unwinding rollers 2 and the plurality of receiving rollers 5 are rotatably disposed on the first mounting member 7 in correspondence thereto.

[0073] In this embodiment, a plurality of receiving rollers 5 and a plurality of discharging rollers 2 are arranged on the first mounting frame 6 through the first mounting member 7. This is to facilitate the replacement of the receiving rollers 5 and the discharging rollers 2, and to timely fine-tune the positions of the discharging rollers 2 and the receiving rollers 5. The receiving rollers 5 or the discharging rollers 2 can be removed by disassembling the first mounting member 7.

[0074] Further, the first mounting frame 6 has a plurality of guide protrusions 8, and the first mounting member 7 is slidably arranged on the guide protrusions 8. The first mounting member 7 includes:

[0075] The first mounting block 9 has a plurality of first guide grooves 10, and the guide protrusions 8 are slidably arranged in the first guide grooves 10;

[0076] A first linear driving member 11, disposed on the first mounting frame 6, and used for driving the first mounting block 9 to slide;

[0077] The first rotating driving member 12 is arranged on the first mounting block 9 , and the unwinding roller 2 or the receiving roller 5 is arranged on the first rotating driving member 12 .

[0078] In this embodiment, in order to prevent the edges of the substrate, battery materials and finished products from deviating from the laminating gap 4 of the laminating piece 3 during the laminating process of the laminating piece 3, this scheme enables the first mounting block 9 to slide on the guide protrusion 8 of the first mounting frame 6 in the direction of the guide protrusion 8. After the first mounting block 9 slides, it drives the unloading roller 2 or the receiving roller 5 to slide, so that the substrate and battery materials on the unloading roller 2 and the finished product or plastic film on the receiving roller 5 are always in the laminating gap 4. In order to improve the installation efficiency, this scheme can fix several first mounting members 7 for mounting the receiving roller 5 or the unloading roller 2, and use them as a reference after the installation and fixation are completed. After the installation of other receiving rollers 5 and unloading rollers 2 is completed, the first linear drive member 11 drives the non-reference receiving roller 5 and the unloading roller 2 to align with the reference receiving roller 5 or the unloading roller 2. After alignment, the first rotating drive member 12 drives the unloading roller 2 or the receiving roller 5 to rotate. A first rotating drive member 12 drives a receiving roller 5 or a discharging roller 2 to rotate. The first rotating drive member 12 can be a motor that drives the receiving roller 5 or the discharging roller 2 to rotate through a reducer, or it can be other structures. The first linear drive member 11 can be a cylinder, an oil cylinder or other structures that can be telescopic to drive the first mounting block 9 to slide.

[0079] Furthermore, the first guide groove 10 has clamping protrusions 14 at both ends, and the guide protrusion 8 has clamping grooves 13 on both sides. The clamping protrusions 14 are used to be clamped in the clamping grooves 13, and the clamping protrusions 14 are slidably arranged in the clamping grooves 13.

[0080] In this embodiment, in order to ensure the stability of the structure of the receiving roller 5 and the discharging roller 2, the present solution is designed such that the clamping protrusion 14 is clamped in the clamping groove 13 and slides in the clamping groove 13, thereby preventing the discharging roller 2 or the receiving roller 5 from accidentally detaching from the guide protrusion 8 on the first mounting frame 6 during sliding, causing the first rotating drive member 12 and the receiving roller 5 or the discharging roller 2 to fall off, thereby causing losses.

[0081] Further, the first mounting frame 6 has two mounting slots 15, and the second mounting frame 42 includes:

[0082] The second mounting member 16 is disposed in the mounting groove 15, and the second mounting member 16 includes:

[0083] The first mounting platform 17, which has two, is disposed in the mounting groove 15;

[0084] The second mounting platform 18, which has two parts, is disposed in the mounting groove 15;

[0085] Two supporting members 19 are provided on the first mounting frame 6 and are used to support the first mounting platform 17;

[0086] The pressing part 3 comprises:

[0087] A first pressing roller 20, both ends of which are rotatably mounted on two first mounting platforms 17;

[0088] The second pressing roller 21 , both ends of the second pressing roller 21 are rotatably disposed on two second mounting platforms 18 , respectively, and the first pressing roller 20 and the second pressing roller 21 form a pressing gap 4 .

[0089] In this embodiment, in order to achieve the attachment of the upper and lower layers of battery materials to the substrate, this scheme is designed by arranging the first pressing roller 20 and the second pressing roller 21 up and down, and the first pressing roller 20 and the second pressing roller 21 form a pressing gap 4. For the convenience of installation, the first pressing roller 20 is installed on the first mounting platform 17, and the second pressing roller 21 is installed on the second mounting platform 18. The first mounting platform 17 is supported by the support member 19 to reduce the burden.

[0090] Further, the second mounting member 16 also includes:

[0091] A second rotation driving member 22, disposed on the first mounting frame 6;

[0092] A first connecting shaft 23, one end of which is disposed on the second rotating driving member 22, and the other end of which passes through the first mounting platform 17 and is disposed on the first pressing roller 20;

[0093] A second connecting shaft 24, one end of which passes through the second mounting platform 18 and is disposed on the second pressing roller 21;

[0094] The synchronous belt 25 is wound around the first connecting shaft 23 and the second connecting shaft 24 .

[0095] In this embodiment, the second rotating driving member 22 drives the first pressing roller 20 and the second pressing roller 21 to rotate simultaneously, the first connecting shaft 23 and the second connecting shaft 24 are universal couplings, and the function of the synchronous belt 25 is to make the first connecting shaft 23 and the second connecting shaft 24 rotate synchronously. The second rotating driving member 22 can be a motor that drives the first connecting shaft 23 to rotate through a reducer, or it can be other driving members for driving the first connecting shaft 23 to rotate. The second rotating driving member 22 has a housing, and the first connecting shaft 23 and the second connecting shaft 24 are both rotatably arranged on the housing.

[0096] Further, the first mounting frame 6 has a third guide groove 26, and further includes:

[0097] There are a plurality of rotating wheels 27 , which are rotatably disposed on the first mounting platform 17 . After the rotating wheels 27 rotate, they are used to drive the first mounting platform 17 to slide along the third guide groove 26 .

[0098] In this embodiment, in order to facilitate installation, a third guide groove 26 is designed on the second mounting platform 18. The rotating wheel 27 moves in the third guide groove 26 to achieve the alignment movement of the first mounting platform 17 during installation. After the two first mounting platforms 17 are installed, the first mounting platform 17 is fixed in the mounting groove 15 to ensure the stability of the equipment during the production process of the finished product.

[0099] Furthermore, it also includes a plurality of limiters 28, all of which are arranged on the first mounting frame 6, and the limiters 28 include:

[0100] A third mounting platform 29, arranged on the first mounting frame 6;

[0101] The limiting member 30 is slidably disposed on the third mounting platform 29 . A limiting gap 31 is defined between the limiting member 30 and the third mounting platform 29 , and the material passes through the limiting gap 31 .

[0102] In this embodiment, when making battery electrodes, the battery electrodes may not be stretched very tightly. In order to limit the wrinkle height of the battery material and the substrate, this solution is designed with a limiter 28. The limiter 28 is used to limit the battery material and the substrate before pressing and the finished product after pressing. The limiter 30 is increased and decreased by sliding on the third mounting platform 29 to adjust the height of the wrinkles. The limiter 30 can be controlled to slide on the third mounting platform 29 by a mechanism with a telescopic function such as a cylinder or an oil cylinder.

[0103] Furthermore, it also includes:

[0104] There are a plurality of guide rollers 32 which are rotatably arranged on the first mounting frame 6 at intervals, and the materials are wound around the guide rollers 32 in sequence.

[0105] In this embodiment, in order to ensure the stability of the lamination process, a guide roller 32 is added to the first mounting frame 6 to guide the battery material, substrate, finished product and plastic film. The guide roller 32 also has the function of tensioning the battery material, substrate, finished product and plastic film.

[0106] Furthermore, it also includes:

[0107] There are a plurality of detection members 33, which are used to be arranged between adjacent guide rollers 32;

[0108] The detection member 33 comprises:

[0109] A guide rod 34 is provided on the first mounting frame 6;

[0110] A second mounting block 35 is slidably disposed on the guide rod 34;

[0111] A first connecting rod 36 having a first sliding groove 37 and rotatably disposed on the second mounting block 35;

[0112] A second connecting rod 38, one end of which has a second sliding groove 39;

[0113] A fastener 40, used for slidingly setting in the first slide groove 37 and the second slide groove 39;

[0114] The detection unit 41 is disposed on the other end of the second connecting rod 38 , and the fastener 40 is used to adjust the detection angle of the detection unit 41 after sliding along the first sliding groove 37 and the second sliding groove 39 .

[0115] In this embodiment, in order to prevent the battery materials, substrates or finished products from being pulled too tight during the manufacturing process and causing breakage, the present solution detects the tension of the battery materials, substrates or finished products through the detection unit 41, and adjusts the tension by adjusting the rotation speed of the receiving roller 5 and the rotation speed of the first pressure roller 20 and the second pressure roller 21. During detection, the detection member 33 slides the detection unit 41 to the corresponding position by sliding the second mounting block 35. After rotating the first connecting rod 36 and the second connecting rod 38, the fastener 40 is tightened to fix the angle of the detection unit 41, so that the detection unit 41 is opened and the detection unit 41 is in the detection state. After the detection is completed, the reverse operation is performed to close the detection member 33.

[0116] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Pole dry laminating machine, characterized in that: include: Bracket (1); A plurality of unloading rollers (2) are rotatably arranged on the bracket (1); A pressing piece (3) having a pressing gap (4), wherein the pressing piece (3) is arranged on the support (1), and a material is used to pass through the pressing gap (4); There are a plurality of receiving rollers (5), all of which are arranged on the bracket (1), and the pressing member (3) is located between the unwinding roller (2) and the receiving roller (5); The support (1) comprises: A first mounting frame (6); A second mounting frame (42) is arranged on the first mounting frame (6), and the unwinding roller (2), the pressing member (3) and the receiving roller (5) are all rotatably arranged on the first mounting frame (6); The first mounting frame (6) comprises: A plurality of first mounting members (7) are arranged on the first mounting frame (6), and a plurality of the unwinding rollers (2) and a plurality of the receiving rollers (5) are rotatably arranged on the first mounting members (7) in correspondence; The first mounting frame (6) has a plurality of guide protrusions (8), the first mounting member (7) is slidably arranged on the guide protrusions (8), and the first mounting member (7) comprises: A first mounting block (9) having a plurality of first guide grooves (10), wherein the guide protrusions (8) are slidably arranged in the first guide grooves (10); a first linear driving member (11), arranged on the first mounting frame (6), the first linear driving member (11) being used to drive the first mounting block (9) to slide; The first rotating driving member (12) is arranged on the first mounting block (9), and the unwinding roller (2) or the receiving roller (5) is arranged on the first rotating driving member (12).

2. The electrode dry laminating machine according to claim 1, characterized in that: The first guide groove (10) has a clamping protrusion (14) at both ends, the guide protrusion (8) has a clamping groove (13) on both sides, the clamping protrusion (14) is used to clamp in the clamping groove (13), and the clamping protrusion (14) is slidably arranged in the clamping groove (13).

3. The electrode dry laminating machine according to claim 1, characterized in that: The first mounting frame (6) has two mounting slots (15), and the second mounting frame (42) comprises: A second mounting member (16) is arranged in the mounting groove (15), and the second mounting member (16) comprises: Two first mounting platforms (17) are provided in the mounting groove (15); Two second mounting platforms (18) are provided in the mounting groove (15); Two support members (19) are provided on the first mounting frame (6) and are used to support the first mounting platform (17); The pressing piece (3) comprises: A first pressing roller (20), wherein two ends of the first pressing roller (20) are rotatably mounted on the two first mounting platforms (17); A second pressing roller (21), the two ends of the second pressing roller (21) are rotatably mounted on the two second mounting platforms (18), and the first pressing roller (20) and the second pressing roller (21) form the pressing gap (4).

4. The electrode dry laminating machine according to claim 3, characterized in that: The second mounting member (16) further comprises: A second rotating driving member (22) is arranged on the first mounting frame (6); a first connecting shaft (23), one end of which is arranged on the second rotating driving member (22), and the other end of which passes through the first mounting platform (17) and is arranged on the first pressing roller (20); A second connecting shaft (24), one end of which passes through the second mounting platform (18) and is arranged on the second pressing roller (21); A synchronous belt (25) is wound around the first connecting shaft (23) and the second connecting shaft (24).

5. The electrode dry laminating machine according to claim 3, characterized in that: The first mounting frame (6) has a third guide groove (26) and further comprises: There are a plurality of rotating wheels (27) which are rotatably arranged on the first mounting platform (17); after the rotating wheels (27) rotate, they are used to drive the first mounting platform (17) to slide along the third guide groove (26).

6. The electrode dry laminating machine according to claim 1, characterized in that: It also includes a plurality of limiters (28), all of which are arranged on the first mounting frame (6), and the limiters (28) include: a third mounting platform (29) arranged on the first mounting frame (6); A limiting member (30) is slidably disposed on the third mounting platform (29); a limiting gap (31) is provided between the limiting member (30) and the third mounting platform (29); and the material passes through the limiting gap (31).

7. The electrode dry laminating machine according to claim 1, characterized in that: Also includes: There are a plurality of guide rollers (32) which are rotatably arranged on the first mounting frame (6) at intervals, and the material is sequentially wound around the guide rollers (32).

8. The electrode dry laminating machine according to claim 1, characterized in that: Also includes: A plurality of detection members (33) are provided for being arranged between adjacent guide rollers (32); The detection element (33) comprises: A guide rod (34) arranged on the first mounting frame (6); A second mounting block (35) slidably disposed on the guide rod (34); A first connecting rod (36) having a first sliding groove (37) and rotatably mounted on the second mounting block (35); A second connecting rod (38) having a second sliding groove (39) at one end; A fastener (40) configured to be slidably disposed in the first slide groove (37) and the second slide groove (39); The detection unit (41) is arranged on the other end of the second connecting rod (38), and the fastener (40) is used to adjust the detection angle of the detection unit (41) after sliding along the first sliding groove (37) and the second sliding groove (39).

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