Electrolytic copper foil polishing brush mandrel combination device

Abstract

The utility model discloses an electrolytic copper foil polishing brush mandrel combination device which comprises a main shaft (1), and a supporting step (11), two core expanding steps (12), two threaded steps (13) and two connecting steps (14) are sequentially distributed on the main shaft from the center to the two ends. The expansion core (4) is sleeved on the two expansion core steps; the flat key (6) is mounted on the inner surface of the expansion core; the expansion sleeve (5) is sleeved outside the expansion core through a flat key; and the polishing brush (2) is sleeved on the outer surface of the expansion sleeve. The utility model has the beneficial effects that a complete main shaft design is adopted, and the instability of a sectional main shaft is avoided. Through the three-section type support and the fastening structure of the expansion core and the expansion sleeve, the stability of the polishing brush structure is guaranteed, meanwhile, it is guaranteed that the overall straightness of the polishing brush is better, and the grinding effect is better; the structure is simple, practicability is high, and universality is wide.

Description

Technical Field

[0001] The utility model relates to the technical field of foil production machines, in particular to an electrolytic copper foil polishing brush mandrel assembly device. Background Art

[0002] Copper foil is an indispensable material in the current production of lithium batteries, and acts as the negative electrode material in lithium batteries. Copper foil is produced by a foil machine based on the principle of electrolysis, in which the cathode roller is an important component of the foil, and the surface quality requirements of the cathode roller are very high. After long-term use, the surface quality will decrease due to oxidation and the adhesion of copper sulfate crystals, thus affecting the quality of the foil. At this time, it is necessary to use a polishing brush to grind it. Most of the existing polishing brushes are segmented support designs, and the overall structure is not stable enough and the straightness is not enough. After grinding on the cathode roller, there may be problems such as insufficient surface quality, grinding roller marks, and concave and convex spots.

[0003] For example, Chinese utility model patent publication number CN209566015U discloses a polishing brush that can be detachably assembled in sections, wherein a first collar is sleeved in the middle of the stainless steel shaft, and first bristles are arranged on the outer wall of the first collar; second collars are sleeved on the stainless steel shafts on both sides of the first collar, and second bristles are arranged on the outer wall of each second collar, and a fastening mechanism is arranged at the outer end of each second collar; the length of the second collar along the axial direction is 40-60mm. The polishing brush is to reasonably divide the original complete bristles into three detachable and assembled parts, and does not involve the problem of the surface quality of the polishing brush. Utility Model Content

[0004] The technical problem to be solved by the utility model is that the existing segmented support design of the polishing brush leads to an unstable overall structure and insufficient straightness, and for this purpose, a core shaft assembly device of an electrolytic copper foil polishing brush is provided.

[0005] The technical solution of the utility model is: a core shaft assembly device for an electrolytic copper foil polishing brush, comprising: a main shaft, on which a supporting step, two core expansion steps, two threaded steps and two connecting steps are sequentially distributed from the center to both ends; an expanding core, on which the expanding core is sleeved on the two core expansion steps; a flat key, on which the flat key is installed on the inner surface of the expanding core; an expanding sleeve, on which the expanding sleeve is sleeved on the outside of the expanding core through the flat key; and a polishing brush, on which the polishing brush is sleeved on the outer surface of the expanding sleeve.

[0006] An improvement of the above solution is that a support ring is adapted between the polishing brush and the support step.

[0007] In the above solution, the inner surface of the expanding core is provided with a key groove, and the outer surface of the expanding core is a conical surface.

[0008] In the above solution, the inner surface of the expansion sleeve is provided with a locking inclined surface matching the conical surface.

[0009] A further improvement of the above solution is that round nuts are installed on the two threaded steps.

[0010] A further general improvement of the above solution is that a round nut gasket is installed on the round nut.

[0011] The beneficial effects of the utility model are: adopting a complete spindle design to avoid the instability of a segmented spindle. The three-segment support and the fastening structure of the core expansion sleeve ensure the stability of the polishing brush structure, while ensuring that the overall straightness of the polishing brush is better, so that the grinding effect is better; the structure is simple, practical, and versatile. In addition to being used for the design of the polishing brush mandrel combination of the foil machine, it only needs to be slightly deformed to be used in various occasions for the design of long shaft parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the utility model;

[0013] Figure 2 yes Figure 1 Schematic diagram of the central spindle structure;

[0014] Figure 3 yes Figure 1 Schematic diagram of the mid-swelling core structure;

[0015] Figure 4 yes Figure 1 Schematic diagram of the structure of the mid-rise set;

[0016] In the figure, 100, electrolytic copper foil polishing brush core shaft assembly device, 1, main shaft, 2, polishing brush, 3, support ring, 4, core expansion, 5, expansion sleeve, 6, flat key, 7, round nut, 11, support step, 12, core expansion step, 13, threaded step, 14, connecting step, 41, keyway, 42, tapered surface, 51, tightening inclined surface. DETAILED DESCRIPTION

[0017] The technical scheme in the embodiment of the utility model is clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments of ordinary technicians in this field without creative work are within the protection scope of the utility model.

[0018] like Figure 1-4As shown, a core shaft assembly device for an electrolytic copper foil polishing brush comprises: a main shaft 1, on which a supporting step 11, two core expansion steps 12, two threaded steps 13 and two connecting steps 14 are sequentially distributed from the center to both ends; an expansion core 4, on which the expansion core is sleeved on the two core expansion steps; a flat key 6, on which the flat key is installed on the inner surface of the expansion core; an expansion sleeve 5, on which the expansion sleeve is sleeved on the outside of the expansion core through the flat key; and a polishing brush 2, on which the polishing brush is sleeved on the outer surface of the expansion sleeve.

[0019] The spindle 1 is a complete stepped shaft part, which is designed as a support step 11, two core expansion steps 12, two threaded steps 13 and two connecting steps 14, which are used to support the entire polishing brush device 100; the polishing brush 2 can be made into different specifications according to different customers, and is installed on the main spindle 1 through the support ring 3, the core expansion 4, the expansion sleeve 5 and the round nut 7; the support ring 3 is an annular part, the inner ring is sleeved on the spindle 1, and the outer ring supports the polishing brush 2; the core expansion 4 is a hollow conical part, the inner surface of which is provided with a keyway 41 for installing the flat key 6, and the outer surface is a conical surface 42. The core expansion 4 is sleeved on the spindle 1 and connected to the spindle using the flat key 6; the expansion sleeve 5 is an open annular part, and the outer end surface is designed with a locking inclined surface 51. The expansion core 4 is embedded in the locking inclined surface 51 of the expansion sleeve 5 through the conical surface 42, thereby locking the polishing brush 2; the inner ring of the expansion sleeve 5 is sleeved on the expansion core 4, and the outer ring supports the 2 inner rings of the polishing brush; the round nut 7 and the round nut washer 8 are used for fastening at both ends.

[0020] The electrolytic copper foil polishing brush mandrel assembly device adopts a complete spindle design to avoid the instability of a segmented spindle. The three-stage support and the core expansion sleeve fastening structure ensure the stability of the polishing brush structure, while ensuring that the overall straightness of the polishing brush is better, resulting in a better grinding effect. The device has a simple structure, strong practicality, and wide versatility. In addition to being used in the design of a polishing brush mandrel assembly for a raw copper foil machine, it only needs to be slightly deformed to be used in various long shaft parts design occasions.

Claims

1. An electrolytic copper foil polishing brush mandrel assembly device, characterized in that it includes: A main shaft (1), wherein the main shaft is provided with a support step (11), two core expansion steps (12), two threaded steps (13) and two connection steps (14) in sequence from the center to the two ends; an expansion core (4), wherein the expansion core is sleeved on the two core expansion steps; a flat key (6), wherein the flat key is installed on the inner surface of the expansion core; an expansion sleeve (5), wherein the expansion sleeve is sleeved on the outside of the expansion core via the flat key; and a polishing brush (2), wherein the polishing brush is sleeved on the outer surface of the expansion sleeve.

2. The electrolytic copper foil polishing brush mandrel assembly device as claimed in claim 1, characterized in that: A support ring (3) is adapted between the polishing brush and the support step.

3. The electrolytic copper foil polishing brush mandrel assembly device as claimed in claim 1, characterized in that: The inner surface of the expanding core is provided with a keyway (41), and the outer surface of the expanding core is a conical surface (42).

4. The electrolytic copper foil polishing brush mandrel assembly device as claimed in claim 3, characterized in that: The inner surface of the expansion sleeve is provided with a locking inclined surface (51) that matches the conical surface.

5. The electrolytic copper foil polishing brush mandrel assembly device as claimed in claim 1, characterized in that: Round nuts (7) are mounted on the two threaded steps.

6. The electrolytic copper foil polishing brush mandrel assembly device as claimed in claim 5, characterized in that: A round nut gasket is installed on the round nut.

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