Lithium battery copper foil and thin copper strip tensile stress relaxation sample preparation clamp

Abstract

The utility model relates to a lithium battery copper foil and thin copper strip tensile stress relaxation sample preparation clamp, which is used for being fixed on a cutting table to limit and fix a sample to be cut, and comprises an upper clamping plate and a lower clamping plate, the upper clamping plate and the lower clamping plate are arranged on the cutting table and fixed through fixing bolts. A blocking piece is arranged at the bottom of the upper clamping plate. A first adjusting bolt is arranged at the fixed end of the upper clamping plate; the first adjusting bolt penetrates through the upper clamping plate and the blocking piece and abuts against the upper surface of the lower clamping plate. A second adjusting bolt is arranged at the other end of the upper clamping plate; the second adjusting bolt penetrates through the upper clamping plate to be in contact with the upper surface of the separation blade; a third adjusting bolt is arranged at the other end of the lower clamping plate; the head of the third adjusting bolt is screwed into the lower clamping plate but does not penetrate through the lower clamping plate, and a nut abuts against the bottom face below the cutting table. Compared with the prior art, the sample cutting device has the advantages of ensuring that a sample to be cut is completely and smoothly cut and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of copper detection, in particular to a fixture for preparing tensile stress relaxation samples of lithium battery copper foil and thin copper strip. Background Art

[0002] When conducting tensile stress relaxation tests on lithium-ion copper foil and thin copper strip, wire cutting equipment is often used to cut the sample into a dumbbell-shaped specimen. To ensure that the shape and dimensional tolerances of the processed specimen meet the test requirements and the roughness of the cut surface meets the test requirements, multiple reciprocating cuts are often performed on three sides during the circular cut, with the last side retained for the final cut. After the first cut, the weight of the specimen itself and the continuous impact of the cutting coolant can cause the non-fixed end of the specimen to fall and swing, affecting the cutting quality and subsequent test results.

[0003] Therefore, how to cut lithium battery copper foil and thin copper strip tensile stress relaxation test specimens completely, smoothly and intact has become a technical problem that needs to be solved. Utility Model Content

[0004] The purpose of the utility model is to overcome the defects of the above-mentioned prior art and to provide a fixture for preparing tensile stress relaxation samples of lithium battery copper foil and thin copper strip.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] A fixture for preparing tensile stress relaxation samples of lithium battery copper foil and thin copper strip is used to fix on a cutting table to limit and fix the sample to be cut. The cutting table is a square structure cutting table. The fixture includes an upper clamping plate and a lower clamping plate of a long strip structure; the upper clamping plate and the lower clamping plate have the same size and are both smaller than the size of the sample to be cut; a plurality of parallel openings are provided on one side of the cutting table; the upper clamping plate and the lower clamping plate are placed on the cutting table and fixed in the same opening with fixing bolts; a baffle is provided at the bottom of the upper clamping plate; one end of the baffle is connected to the upper clamping plate and the lower clamping plate The upper clamping plate is fixed to the cutting table with a fixing bolt; the fixed end of the upper clamping plate is provided with a first adjusting bolt for adjusting the level between the upper clamping plate and the lower clamping plate; the first adjusting bolt passes through the upper clamping plate and the baffle and rests on the upper surface of the lower clamping plate; the other end of the upper clamping plate is provided with a second adjusting bolt for adjusting the top level; the second adjusting bolt passes through the upper clamping plate and contacts the upper surface of the baffle; the other end of the lower clamping plate is provided with a third adjusting bolt for adjusting the level of the lower clamping plate; the head of the third adjusting bolt is screwed into the lower clamping plate but does not penetrate through it, and the nut is against the bottom surface under the cutting table.

[0007] Furthermore, a level bubble is provided on the side of the baffle for judging whether it is level.

[0008] Furthermore, the blocking piece is a blocking piece with a size equal to that of the upper clamping plate.

[0009] Furthermore, the lengths of the upper clamping plate, the lower clamping plate and the baffle are shorter than the length of the cutting table; and the fixed ends of the upper clamping plate, the lower clamping plate and the baffle all extend out of one side of the cutting table.

[0010] Furthermore, the upper clamping plate and the lower clamping plate are both clamps made of stainless steel.

[0011] Compared with the prior art, the utility model has the following advantages:

[0012] (1) The utility model can lift and limit the sample to be cut by cooperating with the upper clamping plate and the lower clamping plate, thereby eliminating the influence of the gravity of the sample to be cut and the impact of the coolant, and preventing it from falling and swinging, thereby ensuring that the shape tolerance and dimensional tolerance of the sample after processing meet the requirements and the roughness of the cut surface meets the test requirements; and the size of the upper clamping plate and the lower clamping plate are smaller than the size of the sample to be cut, which will not affect the cutting process.

[0013] (2) The utility model also provides a baffle at the bottom of the upper clamping plate. The baffle prevents the sample from being directly contacted when the adjusting bolt is used for adjustment, thereby preventing pressure loss on the sample when the level is adjusted.

[0014] (3) The utility model also provides a level bubble on the side of the baffle, which can accurately determine whether the clamp and the sample to be cut are level as a whole, thereby facilitating adjustment and improving the cutting quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A top view of the structure provided by the utility model;

[0016] Figure 2 This is a front view of the structure provided by the utility model.

[0017] The numbers in the figure indicate:

[0018] 1. Cutting table; 2. Upper clamping plate; 3. Lower clamping plate; 4. Fixing bolt; 5. Opening hole; 6. First adjusting bolt; 7. Second adjusting bolt; 8. Baffle; 9. Third adjusting bolt; 10. Level. DETAILED DESCRIPTION

[0019] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0021] Example

[0022] like Figure 1 and 2As shown, a fixture for preparing tensile stress relaxation samples of lithium battery copper foil and thin copper strip is used to fix the sample to be cut on a cutting table 1 to limit and fix it. It can eliminate the influence of the gravity of the sample itself and the impact of the coolant to be cut, and will not fall or swing, ensuring that the shape tolerance and dimensional tolerance of the sample after processing meet the requirements, and the roughness of the cut surface meets the test requirements; and the size of the upper clamping plate and the lower clamping plate are smaller than the size of the sample to be cut, which will not affect the cutting process; the cutting table 1 is a square structure cutting table, and the fixture includes an upper clamping plate 2 and a lower clamping plate 3 of a long strip structure; the upper clamping plate 2 and the lower clamping plate 3 are both made of stainless steel. The tool; the upper and lower splints 2 and 3 are of the same size and are smaller than the size of the sample to be cut; a plurality of parallel openings 5 ​​are provided on one side of the cutting table 1; the upper and lower splints 2 and 3 are placed on the cutting table 1 and fixed in the same opening 5 with fixing bolts 4; a baffle 8 is provided at the bottom of the upper splint 2; one end of the baffle 8 is fixed to the cutting table 1 together with the upper and lower splints 2 and 3 using fixing bolts 4; the baffle 8 is a baffle of the same size as the upper splint 2; the length of the upper and lower splints 2, 3 and baffle 8 is less than the length of the cutting table 1; in order to balance the forces at both ends, the upper and lower splints 2 and 3 are fixed to the cutting table 1 with fixing bolts 4. The fixed ends of the plate 3 and the baffle 8 extend out of one side of the cutting table 1; the fixed end of the upper clamping plate 2 is provided with a first adjusting bolt 6 for adjusting the level between the upper clamping plate 2 and the lower clamping plate 3; the first adjusting bolt 6 passes through the upper clamping plate 2 and the baffle 8 and rests on the upper surface of the lower clamping plate 3, which can adjust the level between the upper clamping plate 2 and the lower clamping plate 3; the other end of the upper clamping plate 2 is provided with a second adjusting bolt 7 for adjusting the top level; the second adjusting bolt 7 passes through the upper clamping plate 2 and contacts the upper surface of the baffle 8, which can adjust the level of the upper clamping plate 2 and the baffle 8, and the second adjusting bolt 7 will not directly contact the sample, so that when adjusting the level No pressure loss will be caused to the sample; the other end of the lower clamping plate 3 is provided with a third adjusting bolt 9 for adjusting the level of the lower clamping plate 3; the head of the third adjusting bolt 9 is screwed into the lower clamping plate 3 but does not penetrate, and the nut is against the bottom surface under the cutting table 1. The length of the third adjusting bolt 9 is just enough to make the lower clamping plate 3 level and play a supporting role. The third adjusting bolt 9 can adjust the lower clamping plate 3 upward or downward. Screwing it in can make the lower clamping plate 3 downward, and unscrewing it out partially can make the lower clamping plate 3 tilt upward; through the coordinated use of three adjusting bolts, the sample to be cut on the clamp can be kept in a horizontal and stable state, thereby facilitating cutting and ensuring the quality of cutting.

[0023] In order to judge whether it is level, a level bubble 10 for judging whether it is level is set on the side of the baffle 8, and the level bubble 10 is used as a basis for adjusting the level.

[0024] The above describes in detail the preferred embodiments of the present invention. It should be understood that those skilled in the art can make numerous modifications and variations based on the concepts of the present invention without inventive effort. Therefore, any technical solutions that can be derived by those skilled in the art based on the concepts of the present invention through logical analysis, reasoning, or limited experimentation based on the existing technology should be within the scope of protection defined by the claims.

Claims

1. A fixture for preparing tensile stress relaxation samples of lithium battery copper foil and thin copper strip, used for fixing on a cutting table (1) to limit and fix the sample to be cut, wherein the cutting table (1) is a square structure cutting table, characterized in that: The clamp comprises an upper clamping plate (2) and a lower clamping plate (3) of a long strip structure; the upper clamping plate (2) and the lower clamping plate (3) have the same size and are both smaller than the size of the sample to be cut; a plurality of parallel openings (5) are provided on one side of the cutting table (1); the upper clamping plate (2) and the lower clamping plate (3) are placed on the cutting table (1) and fixed in the same opening (5) using fixing bolts (4); a baffle (8) is provided at the bottom of the upper clamping plate (2); one end of the baffle (8) is fixed to the cutting table (1) together with the upper clamping plate (2) and the lower clamping plate (3) using fixing bolts (4); the fixed end of the upper clamping plate (2) is provided There is a first adjusting bolt (6) for adjusting the level between the upper clamping plate (2) and the lower clamping plate (3); the first adjusting bolt (6) passes through the upper clamping plate (2) and the baffle (8) and rests on the upper surface of the lower clamping plate (3); the other end of the upper clamping plate (2) is provided with a second adjusting bolt (7) for adjusting the top level; the second adjusting bolt (7) passes through the upper clamping plate (2) and contacts the upper surface of the baffle (8); the other end of the lower clamping plate (3) is provided with a third adjusting bolt (9) for adjusting the level of the lower clamping plate (3); the head of the third adjusting bolt (9) is screwed into the lower clamping plate (3) but does not penetrate through it, and the nut is against the bottom surface below the cutting table (1).

2. A fixture for preparing tensile stress relaxation samples of lithium battery copper foil and thin copper strip according to claim 1, characterized in that: A level bubble (10) for judging whether it is level is provided on the side of the baffle (8).

3. The fixture for preparing tensile stress relaxation samples of lithium battery copper foil and thin copper strip according to claim 1, characterized in that: The baffle (8) is a baffle having a size equal to that of the upper clamping plate (2).

4. The fixture for preparing tensile stress relaxation samples of lithium battery copper foil and thin copper strip according to claim 1, characterized in that: The lengths of the upper clamping plate (2), the lower clamping plate (3) and the baffle (8) are shorter than the length of the cutting table (1); and the fixed ends of the upper clamping plate (2), the lower clamping plate (3) and the baffle (8) all extend out of one side of the cutting table (1).

5. The fixture for preparing tensile stress relaxation samples of lithium battery copper foil and thin copper strip according to claim 1, characterized in that: The upper clamping plate (2) and the lower clamping plate (3) are both clamps made of stainless steel.

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