Deburring tool

Abstract

The utility model belongs to the technical field of lithium battery manufacturing, and particularly relates to a deburring tool which is used for a shell of a lithium battery and comprises a port die and a stripper plate, after the port die receives the shell in the pre-forming stage, a turnup which is turned outwards is formed at the port of the shell, so that burrs which are originally formed at the port of the shell are far away from the inner wall of a straight section of the shell, and the burrs are removed from the straight section of the shell. The stripper plate is arranged on a punching rod used for die pressing in a sleeving mode before punching, a protruding block extending towards the shell is formed at the position, matched with the punching rod, of the stripper plate, and in the demolding process, the protruding block is supported at the transition position of the turned-over edge and the inner wall of the straight section of the shell, so that the burr end, away from the shell, of the turned-over edge is suspended. The technical problem that burrs easily fall into the shell in the stretching process of the metal shell of the lithium battery in the prior art is solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to lithium battery manufacturing technical field especially relates to a deburring tool. BACKGROUND

[0002] The metal shell of lithium battery is formed by stamping and drawing, and metal burrs are generated at the end during the drawing of the metal shell. After the burrs fall into the shell, the shell is prone to a large number of scratches, bruises and other defects in the subsequent process, resulting in poor appearance and even functional failure. Therefore, it is necessary to design a tool to prevent burrs from falling into the shell. SUMMARY

[0003] To solve the technical problem that burrs fall into the shell during the drawing of the metal shell of the lithium battery in the prior art, the present application provides a deburring tool, which solves the above technical problems.

[0004] The technical scheme adopted by the utility model to solve its technical problems is:

[0005] The utility model provides a deburring tool for the shell of lithium battery, which comprises: a port mold, which receives the shell in the preforming stage to form a flange that is folded outward at the shell port, so that the burrs originally formed at the shell port are away from the inner wall of the straight section of the shell; a stripper plate, which is sleeved on a punch rod for a die before stamping, and a protrusion extending towards the shell is formed at the matching position of the stripper plate and the punch rod. During the demolding process, the protrusion is supported at the transition position of the flange and the inner wall of the straight section of the shell, so that the burr end of the flange is suspended away from the shell.

[0006] Further, a die is further included, which supports the shell during the stamping and forming of the shell, and a through channel is formed in the die to pass through the body to allow the straight section of the shell after stamping and forming to pass through, and the channel forms a groove at the receiving end of the die, which is abutted by the flange.

[0007] Further, the port mold is provided with a through hole for the middle section of the shell before stamping and forming, and a forming groove is formed at one end of the through hole. During pre-stamping and forming, the shell port is pressed and combined at the forming groove to form the flange.

[0008] Based on the above technical scheme, the utility model can achieve the following technical effects:

[0009] The burr removing tool of the utility model is different from the prior art, the end part of the shell in the prior art is a right-angle plane, burrs are formed at the right-angle plane, especially part of the burrs extends to the inside of the shell, in the shell forming process, the punch needs to be vertically moved (stamped) for multiple times to stamp the shell, the burrs of the end part of the shell directly contact the punch and are repeatedly scratched by the punch, and inevitably fall into the shell, the burr removing tool of the utility model is used for the shell of a lithium battery, before the shell is officially stamped and formed, the shell is received by the port mold in the pre-forming stage to make the shell port form a flange which is outwardly folded, the flange makes the burrs originally formed at the right-angle plane of the shell port away from the straight section of the shell, that is, the flange becomes a buffer section between the burrs and the inner wall of the straight section of the shell, in the subsequent stamping process, the punch does not directly contact the burr end of the flange (the burr end is originally at the shell port), and the burrs are avoided from being brought into the shell by the punch, further, a protrusion extending to the shell is formed at the cooperation position of the punch and the stripper plate, in the demolding process, the protrusion is supported at the transition position of the flange and the inner wall of the straight section of the shell, the burr end of the flange is suspended away from the shell, and the burr end does not directly contact the annular body of the stripper plate, so that the burrs are avoided from falling into the shell in the demolding process, and the burr removing tool of the utility model solves the technical problem that the burrs of the metal shell of the lithium battery are easily fallen into the shell in the stretching process in the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is a schematic view of the shell of the burr removing tool of the utility model before the pre-forming stage;

[0011] Figure 2 It is a schematic view of the port mold of the burr removing tool of the utility model;

[0012] Figure 3 It is a schematic view of the burr removing tool of the utility model when the shell is officially stamped after the pre-forming stage;

[0013] Figure 4 It is a schematic view of the burr removing tool of the utility model after the stamping and forming;

[0014] Figure 5 It is a schematic view of the burr removing tool of the utility model when the shell is demolded

[0015] Figure 6 It is a sectional view of the stripper plate of the burr removing tool of the utility model.

[0016] Wherein: 1 - shell, 11 - flange, 12 - burr end; 2 - port mold, 21 - groove; 3 - stripper plate, 31 - protrusion; 4 - concave mold, 41 - groove; 5 - punch. DETAILED DESCRIPTION

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0018] like Figures 1-6 As shown, this utility model provides a deburring fixture for a lithium battery casing 1, including a port mold 2 and a stripper plate 3. After receiving the casing 1 during the pre-forming stage, the port mold 2 forms an outwardly folded flange 11 at the port of the casing 1, so that the burrs originally formed at the port of the casing 1 are moved away from the inner wall of the straight section of the casing 1. That is, the flange 11 needs to have sufficient length in the horizontal direction, and the horizontal length of the flange 11 needs to be greater than the length of the burr extending into the casing 1. The stripper plate 3 is fitted onto the die before stamping. On rod 5, a protrusion 31 extending toward housing 1 is formed at the mating point between stripper plate 3 and punch 5. During demolding, the end of protrusion 31 is supported at the transition point between flange 11 and the inner wall of straight section of housing 1, so that flange 11 is suspended away from the burr end 12 of housing 1. That is, the vertical height of protrusion 31 needs to be greater than the vertical height of flange 11, so that there is no contact between the burr end 12 of flange 11 and the annular body of stripper plate 3, so that the burr will not fall into housing 1 due to contact with the annular body of stripper plate 3.

[0019] In a preferred embodiment of the present invention, a concave mold 4 is further included. The concave mold 4 supports the housing 1 during the stamping process. The concave mold 4 has a channel that passes through the body so that the straight section of the housing 1 after stamping can pass through. The channel forms a groove 41 at the receiving end of the concave mold 4, which is abutted by the flange 11. The part of the groove 41 that contacts the flange 11 is adapted to the shape of the flange 11 so as to prevent the flange 11 from being deformed by the protrusion 31 during the forming process of the housing 1.

[0020] In a preferred embodiment of this utility model, the port mold 2 is provided with a through hole for the middle section of the housing 1 to pass through before stamping, and a groove 21 is formed at one end of the through hole. During pre-pressing, the port portion of the housing 1 is pressed into the groove 21 to form a flange 11. Further, the end of the stamping rod used in the pre-forming stage is a tapered end adapted to the shape of the flange 11.

[0021] It should be understood that the specific embodiments described above are only for explaining the present invention and are not intended to limit the present invention. Obvious variations or modifications derived from the spirit of the present invention are still within the protection scope of the present invention.

Claims

1. A deburring tool for a housing (1) of a lithium battery, characterized in that, It comprises: a port die (2) which, in a pre-forming stage, receives a shell (1) to make a port of the shell (1) form an outwardly turned-over flange (11) to make a burr originally formed at the port of the shell (1) away from an inner wall of a straight section of the shell (1); a stripper plate (3) which, before stamping, is sleeved on a punch rod (5) for a die, and which is formed with a protrusion (31) extending towards the shell (1) at a position where the punch rod (5) is matched, during a stripping process, the protrusion (31) is supported at a transition between the flange (11) and the inner wall of the straight section of the shell (1) to make a burr end (12) of the flange (11) suspended away from the shell (1).

2. The deburring tool of claim 1, wherein, It also comprises a concave die (4) which supports the shell (1) during a stamping forming process of the shell (1), and which is formed with a through-body passage for the straight section of the shell (1) after stamping forming to pass through, and which is formed with a groove (41) abutted by the flange (11) at a receiving end of the concave die (4).

3. The deburring tool of claim 1, wherein, The port die (2) is configured with a through-hole for the middle section of the shell (1) before stamping forming to pass through, and is formed with a forming groove (21) at one end of the through-hole, during pre-stamping forming, a port portion of the shell (1) is pressed together at the forming groove (21) to form the flange (11).

Images