Deburring device

Abstract

The utility model belongs to the technical field of lithium battery manufacturing, and particularly relates to a deburring device which is used for a shell of a lithium battery before a stretching process and comprises a flushing rod, a part of the flushing rod is inserted into the shell, and a gas passing channel is formed in the flushing rod to guide flushing gas with dry ice particles. The air passing channel is provided with a whole-ring air outlet hole in the outer wall of the flushing rod, and the air outlet hole is right opposite to burrs at the end opening of the shell. The technical problem that burrs can fall into the shell in the stamping 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 device. BACKGROUND

[0002] The metal shell of lithium battery is formed by multiple stamping and drawing, and metal burrs are generated at the end during the drawing process of the metal shell. If the burrs are not cleaned in time, they will be brought into the shell by the punch in the continuous stamping action, and a large number of scratches and pressure injuries will be caused in the subsequent process, resulting in poor appearance of the shell and even functional failure. Therefore, it is necessary to design a device to prevent the burrs from falling into the shell. SUMMARY

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

[0004] The utility model solves technical problems employing the technical scheme that:

[0005] The utility model provides a deburring device for the shell of lithium battery before drawing process, including washing rod, the part of washing rod inserts in the shell, the washing rod forms the air passage to guide the washing gas with dry ice particle, the air passage forms the whole ring's air outlet hole on the outer wall of washing rod, the air outlet hole is opposite the burr at the shell port.

[0006] Further, the washing rod includes a ventilation segment and a positioning segment, the ventilation segment is vertically configured, and a cylindrical channel is formed at the center for accessing the washing gas, the positioning segment includes a positioning base for positioning the shell and an assembly thin rod arranged on the top end surface of the positioning base, the diameter of the assembly thin rod is smaller than the inner diameter of the cylindrical channel on the ventilation segment, a waist-shaped clamping piece is arranged on the end of the assembly thin rod away from the positioning base, both ends of the waist-shaped clamping piece are arc-shaped ends adapted to the shape of the inner wall of the cylindrical channel, the middle segment of the waist-shaped clamping piece is a straight segment, after the waist-shaped clamping piece is inserted into the cylindrical channel, the two arc-shaped ends are clamped with the inner wall of the cylindrical channel, and the gap between the straight segment of the waist-shaped clamping piece and the inner wall of the cylindrical channel forms a passageway, after assembly, a gap is left between the bottom end surface of the ventilation segment and the top end surface of the base of the positioning segment to form the air outlet hole.

[0007] Further, it further includes a positioning pin, the positioning pin penetrates the ventilation segment along the horizontal direction and penetrates the waist-shaped clamping piece of the positioning segment to assemble the ventilation segment and the positioning segment together.

[0008] Further, the positioning pin penetrates the waist-shaped clamping piece from the two arc-shaped ends.

[0009] Further, the part of the flushing rod inserted into the shell is transitionally fitted with the shell.

[0010] Further, a recessed die for receiving the shell is further included, the recessed die envelopes the shell, an air outlet channel is formed on the recessed die, an integral ring of air inlet holes is formed on the inner wall surface of the air outlet channel, and the air inlet holes are opposite to the burrs at the shell port.

[0011] Further, the diameter of the air inlet hole is larger than the diameter of the air outlet hole.

[0012] Based on the above technical solutions, the technical effects that can be achieved by the utility model are as follows.

[0013] The burr removing device of the utility model removes the burrs at the end of the shell before the shell is stretched, specifically, the flushing rod is inserted into the shell, then the flushing gas with dry ice particles is introduced into the air passage of the flushing rod, the flushing gas with dry ice particles flows out of the air outlet hole opposite to the burrs at the shell port, the burrs are removed by spraying the shell port, and the shell is stretched and formed after the burrs are removed, thereby solving the technical problem that the burrs of the metal shell of the lithium battery fall into the shell in the stamping process in the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a whole structure schematic view of the burr removing device of the utility model;

[0015] Figure 2 It is a vertical section schematic view of the air passage section of the flushing rod of the utility model;

[0016] Figure 3 It is a vertical section schematic view of the positioning section of the flushing rod of the utility model;

[0017] Figure 4 It is a horizontal section schematic view of the flushing rod at the waist-shaped clamping piece of the utility model.

[0018] Wherein: 1-shell; 2-flushing rod, 21-air passage, 211-air outlet hole, 22-air passage section, 221-cylindrical channel, 23-positioning section, 231-positioning base, 232-fine rod, 233-waist-shaped clamping piece, 24-positioning pin, 241-positioning channel; 3-recessed die, 31-air outlet channel, 311-air inlet hole. DETAILED DESCRIPTION

[0019] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. The description of the at least one exemplary embodiment is merely illustrative, and is by no means intended to limit the present application and its application or use in any way. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0020] As shown in Figures 1-4 The present application provides a deburring device for a lithium battery shell 1 before a stretching process, which comprises a flushing rod 2, part of the flushing rod 2 is inserted into the shell 1, and a gas passing channel 21 is formed in the flushing rod 2 to introduce flushing gas with dry ice particles, the gas passing channel 21 is formed with a whole ring of gas outlet holes 211 on the outer wall of the flushing rod 2, and the gas outlet holes 211 are opposite to the burrs at the port of the shell 1.

[0021] It should be explained that the way of introducing flushing gas with dry ice particles in the gas passing channel 21 to remove burrs is also called cold spraying, which is a method of cleaning dirt, and dry ice cleaning is to use compressed air as power and carrier, and dry ice particles as accelerated particles, to spray onto the surface of the cleaned object through a special jet cleaning machine, to use the energy conversion of the momentum change, sublimation and melting of the high-speed moving solid dry ice particles to rapidly freeze the dirt, oil stains and residual impurities on the surface of the cleaned object, so as to condense, become brittle and be stripped, and at the same time be removed with the airflow.

[0022] In one embodiment of the utility model, the flushing rod 2 includes the upper vent section 22 and the lower positioning section 23, the positioning section 23 is inserted into the vent section 22 to complete the assembly, and then the flushing rod 2 is complete, the vent section 22 is arranged outside the shell 1, and the positioning section 23 is inserted into the shell 1, specifically, the vent section 22 is vertically arranged, and a cylindrical passage 221 for connecting the flushing gas is formed at the center, the positioning section 23 includes a positioning base 231 for positioning the shell 1 and an assembly thin rod 232 arranged on the top surface of the positioning base 231, the diameter of the assembly thin rod 232 is smaller than the inner diameter of the cylindrical passage 221 on the vent section 22 to prevent the cylindrical passage 221 from being blocked and the air passage 21 from being formed, the waist-shaped clamping piece 233 is arranged on the end of the assembly thin rod 232 away from the positioning base 231, the two ends of the waist-shaped clamping piece 233 are arc-shaped ends matched with the inner wall of the cylindrical passage 221, the middle section of the waist-shaped clamping piece 233 is a straight section, the two arc-shaped ends of the waist-shaped clamping piece 233 are clamped with the inner wall of the cylindrical passage 221 after being inserted into the cylindrical passage 221, in order to facilitate the insertion of the waist-shaped clamping piece 233, the cylindrical passage 221 can also be formed in a structure with a wide lower end and a narrow upper end, the gap between the straight section of the waist-shaped clamping piece 233 and the inner wall of the cylindrical passage 221 forms a passage for the flushing gas, after the assembly is completed, a gap is left between the bottom surface of the vent section 22 and the top surface of the base of the positioning section 23 to form the gas outlet hole 211, preferably, the part of the air passage 21 between the bottom surface of the vent section 22 and the top surface of the base is wide at the center and narrow at the periphery to make the flushing gas sprayed from the gas outlet hole 211 have greater impact force.

[0023] In one embodiment of the utility model, the positioning pin 24 penetrates the vent section 22 along the horizontal direction and penetrates the waist-shaped clamping piece 233 of the positioning section 23 to assemble the vent section 22 and the positioning section 23 together, and correspondingly, the positioning channel 241 is arranged on the vent section 22 and the waist-shaped clamping piece 233 to pass through the positioning pin 24.

[0024] Further, the positioning pin 24 penetrates the waist-shaped clamping piece 233 from the two arc-shaped ends to make the air passage 21 have the maximum passage cross-sectional area at this position.

[0025] Further, the part of the flushing rod 2 inserted into the shell 1 is transitionally matched with the shell 1, that is, the part of the positioning base 231 is transitionally matched with the shell 1, which can prevent burrs from entering the shell 1.

[0026] In one embodiment of the utility model, the concave mold 3 receiving the shell 1 is further included, the concave mold 3 envelopes the shell 1, the concave mold 3 is formed with the air outlet channel 31, the air outlet channel 31 is communicated with the external vacuum system, the air outlet channel 31 is formed with an integral ring-shaped gas inlet hole 311 on the inner wall surface of the concave mold 3, and the gas inlet hole 311 is opposite to the burrs at the port of the shell 1.

[0027] Further, the hole diameter of the air inlet hole 311 is larger than the hole diameter of the air outlet hole 211.

[0028] It should be understood that the above-described specific embodiments are only used to explain the present application, and are not used to limit the present application. The obvious changes or modifications extended from the spirit of the present application are still within the protection scope of the present application.

Claims

1. A deburring device for a housing (1) of a lithium battery before a drawing process, characterized in that, The flushing rod (2) is partially inserted into the shell (1), and a gas passage (21) is formed in the flushing rod (2) to introduce flushing gas with dry ice particles, and the gas passage (21) is formed with a whole ring of gas outlet holes (211) on the outer wall of the flushing rod (2), which are opposite to the burrs at the port of the shell (1).

2. The deburring device of claim 1, wherein The flushing rod (2) includes a ventilation section (22) not inserted into the shell (1) and a positioning section (23) inserted into the shell (1), the ventilation section (22) is vertically arranged and is provided with a cylindrical passage (221) at the center for accessing flushing gas, the positioning section (23) includes a positioning base (231) for positioning the shell (1) and a fitting thin rod (232) arranged on the top end surface of the positioning base (231), the diameter of the fitting thin rod (232) is smaller than the inner diameter of the cylindrical passage (221) on the ventilation section (22), a waist-shaped clamping piece (233) is arranged on the end of the fitting thin rod (232) away from the positioning base (231), the two ends of the waist-shaped clamping piece (233) are arc-shaped ends matched with the shape of the inner wall of the cylindrical passage (221), and the middle section of the waist-shaped clamping piece (233) is a straight section, after the waist-shaped clamping piece (233) is inserted into the cylindrical passage (221), the two arc-shaped ends are clamped with the inner wall of the cylindrical passage (221), and the gap between the straight section of the waist-shaped clamping piece (233) and the inner wall of the cylindrical passage (221) forms a passageway, after the fitting is completed, a gap is left between the bottom end surface of the ventilation section (22) and the top end surface of the base of the positioning section (23) to form the gas outlet holes (211).

3. The deburring device of claim 2, wherein, A positioning pin (24) is further included, which penetrates the ventilation section (22) along the horizontal direction and penetrates the waist-shaped clamping piece (233) of the positioning section (23) to assemble the ventilation section (22) and the positioning section (23) together.

4. The deburring device of claim 3, wherein The positioning pin (24) penetrates the waist-shaped clamping piece (233) from the two arc-shaped ends.

5. The deburring device of claim 1, wherein, The part of the flushing rod (2) inserted into the shell (1) is transitionally fitted with the shell (1).

6. The deburring device of claim 1, wherein, A recessed die (3) for receiving the shell (1) is further included, the recessed die (3) envelopes the shell (1), and the recessed die (3) is formed with a gas passage (31), and the gas passage (31) is formed with a whole ring of gas inlet holes (311) on the inner wall surface of the recessed die (3), which are opposite to the burrs at the port of the shell (1).

7. The deburring device of claim 6, wherein, The diameter of the gas inlet holes (311) is larger than that of the gas outlet holes (211).

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