Clamp and necking device

Abstract

The utility model provides a clamp and necking equipment, the clamp comprises a plurality of body parts, the plurality of body parts are configured to move synchronously to get away from each other or get close to each other, and when the plurality of body parts get close to each other, the third side surfaces of the plurality of body parts are used for enclosing a clamping hole; the plurality of body parts of the clamp are configured to move synchronously to be far away from or close to each other, so that the technical problem that all parts of the clamp in the prior art are mutually independent and cannot move synchronously is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of power batteries, in particular to a clamp and a necking device. Background Art

[0002] In the related art, the various parts of the fixture are installed independently on the pneumatic chuck, and synchronous movement cannot be guaranteed. It is easy to produce abnormal appearance of vertical clamping marks due to timing differences. At the same time, since the various parts are independent of each other, relative offset is easy to occur, resulting in poor roundness of the steel shell after shrinking, and the fixture often needs to be disassembled and recalibrated.

[0003] Therefore, the fixture in the related art has a technical problem that its parts are independent of each other and cannot move synchronously. Utility Model Content

[0004] The embodiments of the present utility model provide a clamp and a necking device, which can improve the technical problem in the prior art that various parts of the clamp are independent of each other and cannot move synchronously.

[0005] In a first aspect, an embodiment of the present invention provides a clamp, comprising:

[0006] a plurality of body portions, each of the body portions having a first side surface, a second side surface, and a third side surface connected between the first side surface and the second side surface, the first side surface of each body portion being disposed opposite to the second side surface of an adjacent body portion;

[0007] The plurality of main body parts are configured to move synchronously to move away from or approach each other, and when the plurality of main body parts approach each other, the third side surfaces of the plurality of main body parts are used to enclose a clamping hole.

[0008] In one embodiment, it further includes a plurality of guide pillars, each of which is movably connected between two corresponding adjacent main body parts, so that the plurality of main body parts move synchronously.

[0009] In one embodiment, the first side surface of the main body is provided with a first opening, and the second side surface of the main body is provided with a second opening; wherein, in the two adjacent main bodies, one end of the guide column is fixed in the first opening of one of the main bodies, and the other end of the guide column is movably installed in the second opening of the other main body.

[0010] In one embodiment, the main body portion includes a main body sub-portion, a first fixing member and a second fixing member, the main body sub-portion includes a top surface connected to the first side surface, the second side surface and the third side surface, the top surface is provided with a first groove passing through the first side surface and a second groove passing through the second side surface, the first fixing member is accommodated in the first groove and is provided with the first opening, and the second fixing member is accommodated in the second groove and is provided with the second opening.

[0011] In one embodiment, the first fixing member is provided with a fixing hole penetrating through the hole wall of the first opening, a connecting member is provided in the fixing hole, and one end of the connecting member abuts against the guide post to fix the guide post.

[0012] In one embodiment, the outer diameter of the guide pillar is smaller than the diameter of the second opening, and the difference between the diameter of the second opening and the outer diameter of the guide pillar is greater than or equal to 0.01 mm and less than or equal to 0.025 mm.

[0013] In one embodiment, the diameter of the guide pillar ranges from 5 mm to 15 mm.

[0014] In one embodiment, the plurality of main bodies are arranged around the clamping hole, and on the same cross section, the clamping hole is a circular hole, and the concentricity of the plurality of main bodies relative to the center of the clamping hole is less than or equal to 0.01 mm.

[0015] In one embodiment, the clamp is a three-petal jaw clamp, and the number of the plurality of main bodies is three.

[0016] In a second aspect, an embodiment of the present invention provides a necking device, comprising a pneumatic chuck and a clamp as described in any of the above embodiments arranged on the pneumatic chuck.

[0017] Beneficial effects of the embodiments of the present utility model:

[0018] In an embodiment of the present invention, the clamp includes a plurality of main body parts surrounding the same center of a circle, and the plurality of main body parts can move closer to or away from the center of the circle. By configuring the plurality of said main body parts of the clamp to move synchronously to move away from or closer to each other, the technical problem in the prior art that the various parts of the clamp are independent of each other and cannot move synchronously is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 1 is a schematic top view of a clamp provided in an embodiment of the present utility model;

[0021] Figure 2 This is an exploded schematic diagram of a clamp provided in an embodiment of the present utility model;

[0022] Figure 3 This is a schematic top view of the main body of the clamp provided in an embodiment of the present utility model;

[0023] Figure 4 1 is a schematic structural diagram of a first fixing member and a second fixing member in a clamp provided by an embodiment of the present utility model;

[0024] Figure 5 It is a top view schematic diagram of the necking device provided in an embodiment of the present utility model;

[0025] Figure 6 It is a top view schematic diagram of the pneumatic chuck provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention. In the present invention, unless otherwise specified, the directional words used, such as "upper" and "lower", generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the accompanying drawings; while "inside" and "outside" refer to the outline of the device.

[0027] In addition, the terms "first", "second" and similar words do not indicate any order, quantity or importance, but are only used to distinguish different technical features. The term "plurality" and similar words mean two or more, unless otherwise expressly limited.

[0028] See also Figure 1 、 Figure 2The clamp provided by an embodiment of the present invention includes a plurality of main body parts 1, each main body part 1 having a first side surface 80 and a second side surface 90, and a third side surface 100 connected between the first side surface 80 and the second side surface 90. The first side surface 80 of each main body part 1 is arranged opposite to the second side surface 90 of the adjacent main body part 1, and the plurality of main body parts 1 are configured to move synchronously to move away from or approach each other. When the plurality of main body parts 1 approach each other, the third side surfaces 100 of the plurality of main body parts 1 are used to form a clamping hole.

[0029] In this embodiment, the clamp includes a plurality of main body parts 1 surrounding the same center of a circle, and the plurality of main body parts 1 can move closer to or away from the center of the circle. By configuring the plurality of main body parts 1 of the clamp to move synchronously to move away from or closer to each other, the technical problem in the prior art that the various parts of the clamp are independent of each other and cannot move synchronously is improved.

[0030] The technical solution of this application is now described in conjunction with specific embodiments.

[0031] In one embodiment, see Figure 2 , further comprising a plurality of guide posts 2, each guide post 2 being movably connected between two corresponding adjacent main body parts 1 so as to enable the plurality of main body parts 1 to move synchronously.

[0032] The guide pillar 2 may have a cylindrical outline.

[0033] At least one end of the guide pillar 2 is movably connected to the main body 1 .

[0034] The extending direction of the guide pillar 2 is perpendicular to the moving direction of the multiple main bodies 1 moving away from or towards each other.

[0035] It can be understood that by setting at least one guide column 2 between any two adjacent main body parts 1, when the two adjacent main body parts 1 move toward or away from the same center of a circle, since the extension direction of the guide column 2 is always perpendicular to the movement direction, the guide column 2 is used to limit the position of the two adjacent main body parts 1, so that the two adjacent main body parts 1 will not be offset in the process of approaching or moving away, thereby enabling multiple main body parts 1 to move synchronously.

[0036] It should be noted that adjacent main body parts 1 can only move relative to the guide pillars 2 arranged between the adjacent main body parts 1 along the extension direction of the guide pillars 2, and in the extension direction perpendicular to the guide pillars 2, the adjacent main body parts 1 do not undergo relative displacement relative to the guide pillars 2 between them, thereby ensuring that the adjacent main body parts 1 move synchronously in the direction of movement towards or away from each other.

[0037] In this embodiment, guide pillars 2 are provided between adjacent main body parts 1 to achieve synchronous movement of the plurality of main body parts 1 .

[0038] In one embodiment, see Figure 1 、 Figure 2 、 Figure 3 A first opening 40 is provided on the first side surface 80 of the main body 1, and a second opening 50 is provided on the second side surface 90 of the main body 1; wherein, in two adjacent main bodies 1, one end of the guide column 2 is fixed in the first opening 40 of one of the main bodies 1, and the other end of the guide column 2 is movably installed in the second opening 50 of the other main body 1.

[0039] The first opening 40 and the second opening 50 may have the same aperture.

[0040] The first opening 40 and the second opening 50 may be disposed opposite to each other and communicate with each other.

[0041] The other end of the guide post 2 can be separated from the inner wall of the second opening 50 to avoid friction generated by the contact between the guide post 2 and the inner wall of the second opening 50 and hindering the relative movement of the main body 1 relative to the guide post 2.

[0042] It can be understood that by respectively opening a first opening 40 and a second opening 50 on the first side surface 80 and the second side surface 90 between adjacent main body portions 1, both ends of the guide column 2 are respectively inserted into the first opening 40 and the second opening 50, one end of the guide column 2 inserted into the first opening 40 is fixedly set, and the other end of the guide column 2 inserted into the second opening 50 is movably set. In the process of multiple main body portions 1 approaching or moving away from each other, the other end of the guide column 2 moves relative to the main body portion 1 in the second opening 50 along the extension direction of the guide column 2, so that the multiple main body portions 1 can be relatively close to or away from each other without being affected or restricted by the guide column 2.

[0043] It should be noted that, since the function of the guide column 2 is to limit the deviation of the movement of adjacent main body parts 1 in the direction toward the same center of a circle, the two ends of the guide column 2 need to be respectively located in the first opening 40 and the second opening 50 to play the above-mentioned role. Therefore, the other end of the guide column 2 cannot be separated from the second opening 50, and the other end of the guide column 2 at least partially needs to be located in the second opening 50 to ensure the limiting effect of the guide column 2 on the adjacent main body parts 1, so that multiple main body parts 1 can move synchronously when approaching or moving away.

[0044] In this embodiment, the first opening 40 and the second opening 50 are directly opened on the first side surface 80 and the second side surface 90 of the adjacent main body parts 1, so that the two ends of the guide column 2 are respectively inserted into the first opening 40 and the second opening 50, and the guide column 2 is used to enable the adjacent main body parts 1 to achieve synchronous movement.

[0045] In one embodiment, see Figure 3The main body 1 includes a main body sub-part 10, a first fixing member 20 and a second fixing member 30. The main body sub-part 10 includes a top surface connected to the first side surface 80, the second side surface 90 and the third side surface 100. The top surface is provided with a first groove 120 passing through the first side surface 80 and a second groove 130 passing through the second side surface 90. The first fixing member 20 is accommodated in the first groove 120 and is provided with a first opening 40. The second fixing member 30 is accommodated in the second groove 130 and is provided with a second opening 50.

[0046] The first fixing member 20 and the second fixing member 30 may be I-beams.

[0047] The first fixing member 20 and the second fixing member 30 are respectively embedded in the first groove 120 and the second groove 130 . The first fixing member 20 and the first groove 120 can be locked and fixed, and the second fixing member 30 and the second groove 130 can be locked and fixed.

[0048] The side walls of the first fixing member 20 are respectively provided with at least one first protrusion, and the inner wall of the first opening is provided with a first groove 120 corresponding to the first protrusion. The first protrusion and the first groove 120 are mutually engaged to fix the first fixing member 20 to the main body sub-part 10.

[0049] It is understandable that since it is difficult to directly open holes in the first side surface 80 and the second side surface 90 on the main body 1, and the top surface of the main body 1 usually has a certain curvature, it is also difficult to directly open a fixing hole 70 on the top surface of the main body 1 for fixing one end of the guide column 2. Therefore, the main body 1 can be divided into three parts, namely the main body sub-part 10, the first fixing part 20 and the second fixing part 30, and the first opening 40 and the second opening 50 are respectively provided on the first fixing part 20 and the second fixing part 30, and then the first fixing part 20 and the second fixing part 30 are assembled with the main body sub-part 10, thereby reducing the process difficulty and saving costs.

[0050] In one embodiment, see Figure 4 , the first fixing member 20 and the second fixing member 30 can be symmetrically arranged.

[0051] The first fixing member 20 can be symmetrically arranged about the first center line.

[0052] The second fixing member 30 can be symmetrically arranged about the second center line.

[0053] In the same main body 1 , the included angle between the first center line of the first fixing member 20 and the second center line of the second fixing member 30 may be in the range of 50 degrees to 60 degrees.

[0054] Specifically, the angle can be any one of 50 degrees, 53 degrees, 55 degrees, 58 degrees, and 60 degrees.

[0055] In one embodiment, see Figure 4 The first fixing member 20 is provided with a fixing hole 70 penetrating the hole wall of the first opening 40 , and a connecting member is provided in the fixing hole 70 , one end of the connecting member abuts against the guide column 2 to fix the guide column 2 .

[0056] The connecting piece may be a screw, and the fixing hole 70 may be a screw hole.

[0057] It can be understood that the guide post 2 is fixed by the connecting member passing through the fixing hole 70 and abutting against the guide post 2 , and one end of the guide post 2 is fixed to the main body 1 by utilizing the friction between the connecting member and the outer wall of the fixing member.

[0058] In this embodiment, the guide post 2 is fixed by a connecting piece abutting against the outer wall of the guide post 2. When the guide post 2 needs to be detached from the main body 1 later, it is only necessary to pull out the connecting piece, which is simple to operate and easy to disassemble.

[0059] In one embodiment, the outer diameter of the guide pillar 2 is smaller than the diameter of the second opening, and the difference between the diameter of the second opening and the outer diameter of the guide pillar 2 is greater than or equal to 0.01 mm and less than or equal to 0.025 mm.

[0060] The difference may be any one of 0.01 mm, 0.015 mm, 0.02 mm, and 0.025 mm.

[0061] It can be understood that when the difference is less than 0.01 mm, the guide column 2 is likely to interfere with the inner wall of the second opening 50, resulting in an unsmooth sliding of the guide column 2 relative to the second opening 50. When the difference is greater than 0.025 mm, the assembly of the main body 1 and the guide column 2 will be unstable, and the main body 1 may be offset in the direction of approaching or moving away from the guide column 2, resulting in the inability of multiple main bodies 1 to move synchronously.

[0062] In this embodiment, by making the outer diameter of the guide pillar 2 smaller than the aperture of the second opening 50, and the difference between the two ranges from 0.01 mm to 0.025 mm, the guide pillar 2 can slide well in the second opening 50, and can also ensure that the multiple main body parts 1 move synchronously during the movement of approaching or moving away.

[0063] In one embodiment, the diameter of the guide pillar 2 ranges from 5 mm to 15 mm.

[0064] The diameter of the guide pillar 2 can be any one of 5 mm, 8 mm, 10 mm, 13 mm, and 15 mm.

[0065] It is understandable that when the diameter of the guide pillar 2 is less than 5 mm, the strength of the guide pillar 2 itself is insufficient and it is easy to break; when the diameter of the guide pillar 2 is greater than 15 mm, since the strength of the guide pillar 2 has met the requirements, continuing to increase the diameter of the guide pillar 2, on the one hand, requires opening larger first openings 40 and second openings 50, and on the other hand, the guide pillar 2 needs to be prepared with more materials, resulting in unnecessary waste of costs.

[0066] In one embodiment, see Figure 1 , multiple main bodies 1 are arranged around the clamping hole. On the same cross section, the clamping hole is a circular hole, and the concentricity of the multiple main bodies 1 compared to the center of the clamping hole is less than or equal to 0.01 mm.

[0067] The concentricity refers to the degree of deviation of the third side surfaces 100 of the plurality of main bodies 1 from the same center of a circle.

[0068] The third side surface 100 of the main body 1 is an arc surface, and on the same cross section, the distance from any point on the third side surface 100 of the main body 1 to the center of the circle is equal.

[0069] It can be understood that the concentricity of the multiple main body parts 1 is less than or equal to 0.01 mm, which means that the difference in inner diameter between the third side surfaces 100 of the multiple main body parts 1 and the same center of the clamping hole is less than or equal to 0.01 mm. By ensuring that the concentricity of the multiple main body parts 1 is less than or equal to 0.01, it can be ensured that the multiple main body parts 1 move synchronously and have good synchronization.

[0070] In this embodiment, the concentricity of the plurality of main bodies 1 is less than or equal to 0.01, so that the synchronization effect of the plurality of main bodies 1 in synchronous movement is better.

[0071] In one embodiment, see Figure 1 , the fixture is a three-jaw fixture.

[0072] The number of the main body parts 1 is three.

[0073] It is understandable that this embodiment is only described by taking the three-petal claw clamp as an example, and the number of the main body parts 1 can also be four, five, six, etc., and the number of the main body parts 1 is not limited here.

[0074] In one embodiment, the connecting piece and the guide pillar 2 are integrated, and the connecting piece and the fixing hole 70 are interference fitted.

[0075] Among them, the interference fit between the connecting part and the fixing hole 70 can improve the fixing effect between the connecting part and the fixing hole 70, and the connecting part and the guide column 2 are integrated into one, which can better fix the guide column 2 compared to the design in which the connecting part and the guide column 2 are separately set and the guide column 2 is fixed by friction.

[0076] In one embodiment, the inner wall of the second opening 50 is mirror-polished.

[0077] The inner wall of the first opening 40 and the inner wall of the fixing hole 70 may also be mirror-polished.

[0078] It is understandable that the mirror polishing process can make the hole wall smoother. When the second opening 50 is smoother, the friction force of the second opening 50 on the guide pillar 2 is smaller, which facilitates the guide pillar 2 to slide in the second opening 50.

[0079] In one embodiment, a third opening 60 is further provided on the top surface of the main body 1 , and the third opening 60 is used for connecting the clamp to the pneumatic chuck 4 below.

[0080] It is understandable that the clamp is connected to the pneumatic chuck 4 via the connecting portion in the third opening 60 and can slide along the motion track 110 of the pneumatic chuck 4 , thereby allowing the multiple body parts 1 to move closer to or farther away from each other.

[0081] Second, see Figure 5 、 Figure 6 An embodiment of the present invention provides a necking device 3, comprising a pneumatic chuck 4 and a fixture as described in any of the above embodiments arranged on the pneumatic chuck 4.

[0082] in, Figure 6 It is a schematic top view of the pneumatic chuck 4.

[0083] Among them, the necking device 3 can be used for necking the battery steel shell.

[0084] The battery may be a lithium battery.

[0085] The utility model discloses a clamp and a necking device 3. Guide pillars 2 are set between multiple main body parts 1 of the clamp. The guide pillars 2 are used to limit the multiple main body parts 1 so that the multiple main body parts 1 can maintain synchronous movement during the process of moving closer or farther away. Compared with the design of the related art in which the multiple main body parts 1 of the clamp are separately set and move independently, the multiple main body parts 1 of the clamp of the utility model can move synchronously.

[0086] The above is a detailed introduction to the embodiments of the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, based on the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the contents of this specification should not be understood as limiting the present invention.

Claims

1. A clamp, characterized in that: include: a plurality of body portions, each of the body portions having a first side surface, a second side surface, and a third side surface connected between the first side surface and the second side surface, the first side surface of each body portion being disposed opposite to the second side surface of an adjacent body portion; The plurality of main body parts are configured to move synchronously to move away from or approach each other, and when the plurality of main body parts approach each other, the third side surfaces of the plurality of main body parts are used to enclose a clamping hole.

2. The clamp according to claim 1, wherein It also includes a plurality of guide pillars, each of which is movably connected between two corresponding adjacent main body parts, so that the plurality of main body parts move synchronously.

3. The clamp according to claim 2, wherein: The first side surface of the main body is provided with a first opening, and the second side surface of the main body is provided with a second opening; wherein, in two adjacent main bodies, one end of the guide column is fixed in the first opening of one of the main bodies, and the other end of the guide column is movably installed in the second opening of the other main body.

4. The clamp according to claim 3, wherein: The main body portion includes a main body sub-portion, a first fixing member and a second fixing member. The main body sub-portion includes a top surface connected to the first side surface, the second side surface and the third side surface. The top surface is provided with a first groove passing through the first side surface and a second groove passing through the second side surface. The first fixing member is accommodated in the first groove and is provided with the first opening. The second fixing member is accommodated in the second groove and is provided with the second opening.

5. The clamp according to claim 4, wherein: The first fixing member is provided with a fixing hole penetrating through the hole wall of the first opening. A connecting member is provided in the fixing hole. One end of the connecting member abuts against the guide post to fix the guide post.

6. The clamp according to any one of claims 3 to 5, characterized in that The outer diameter of the guide pillar is smaller than the diameter of the second opening, and the difference between the diameter of the second opening and the outer diameter of the guide pillar is greater than or equal to 0.01 mm and less than or equal to 0.025 mm.

7. The clamp according to claim 6, wherein: The diameter of the guide pillar ranges from 5 mm to 15 mm.

8. The clamp according to any one of claims 1 to 5, characterized in that The plurality of main bodies are arranged around the clamping hole. On the same cross section, the clamping hole is a circular hole. The concentricity of the plurality of main bodies relative to the center of the clamping hole is less than or equal to 0.01 mm.

9. The clamp according to any one of claims 1 to 5, characterized in that: The clamp is a three-petal claw clamp, and the number of the plurality of main bodies is three.

10. A necking device, characterized in that: The invention comprises a pneumatic chuck and a clamp according to any one of claims 1 to 9 arranged on the pneumatic chuck.

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