Special tool for grinding FPR pipe

Abstract

The utility model discloses a special tool for grinding an FPR pipe. The special tool comprises a cylindrical shell (1), the step part (2) is formed at one end of the cylindrical shell; the stress block (3) is mounted on the surface of the step part; the air bag (4) is arranged in the cylindrical shell; the air tap (5) is arranged on the surface of the step part and is communicated with the air bag; the strip-shaped open slots are uniformly distributed and formed in the peripheral surface of the cylindrical shell along the axial direction of the cylindrical shell; and the inflatable strip (6) is positioned in the strip-shaped open slot and is connected with the air bag. The center has the advantages that the contact positioning area of the FRP pipe and the center is increased, the defect of line contact is overcome, and therefore it is avoided that due to the fact that the ellipse of the end face of the side circle of the FRP pipe is uneven or concave and convex, the grinding precision is affected. And meanwhile, the manual working efficiency is also improved, and the grinding qualification rate reaches 100%.

Description

TECHNICAL FIELD

[0001] The utility model relates to FPR pipe processing technical field, concretely relates to a special frock of FPR pipe grinding. BACKGROUND

[0002] As the negative electrode current collector electrolytic copper foil of lithium battery, the finished product winding usually uses 6 inch FRP pipe as the winding core, winds the electrolytic copper foil on the 6 inch FRP pipe, and then transports to the customer end to use on the machine.But with the increasing demand for the precision of the winding core FRP pipe, most of the recycled and newly made FRP pipes cannot meet the use requirements, and must be ground on the machine again, because the FRP pipe is a hollow pipe, the inner circle of the FRP pipe cannot be centered on the ordinary machine tool, the outer circle cannot be ground to the edge, and the conical center cannot be used due to the uneven inner circle of the edge of the FRP pipe, which causes the FRP pipe to be eccentric during grinding, and the grinding efficiency and success rate are extremely low, therefore, improving the special frock for FPR pipe grinding is the technical problem to be faced and solved by the present application.

[0003] As disclosed in Chinese utility model patent publication No. CN204221605U, a ceramic target pipe outer diameter grinding frock is disclosed, a core rod is inserted into the ceramic target pipe and fixed on the lathe chuck, and the ceramic target pipe is positioned on the core rod by a plug, so that the ceramic target pipe will not be damaged or cracked during the grinding process, and the grinding quality and efficiency are improved. The frock of the patent still contacts the ceramic target pipe, and cannot solve the problem of eccentricity of the FRP pipe during grinding. UTILITY MODEL CONTENTS

[0004] The problem to be solved by the present application is that the existing conical frock is pressed against the two ends of the pipe to grind on the machine, due to the uneven or defective inner circle edge of the two ends of the FRP pipe, the eccentricity precision of the FRP pipe cannot be met, the electrolytic copper foil winding is wrinkled and scrapped, causing double waste of manpower, materials and products, and the efficiency is very low, therefore, a special frock for FPR pipe grinding is provided.

[0005] The technical scheme of the utility model is: a special frock for FPR pipe grinding, comprising: a cylindrical shell; a stepped portion formed at one end of the cylindrical shell; a force receiving block mounted on the surface of the stepped portion; an air bag arranged inside the cylindrical shell; an air nozzle mounted on the surface of the stepped portion and communicating with the air bag; a strip-shaped open slot uniformly distributed along the axial direction of the cylindrical shell and arranged on the outer peripheral surface of the cylindrical shell; and an air inflation strip located in the strip-shaped open slot and connected with the air bag.

[0006] The improvement of the above-mentioned scheme is that the other end of the cylindrical shell is fixedly connected with a cover plate.

[0007] In the above-mentioned scheme, the cover plate is fixedly connected with the cylindrical shell by screws.

[0008] The stepped portion described above has a tapered transition surface at one end near the cylindrical shell.

[0009] The beneficial effect of this invention is that by increasing the contact and positioning area between the FRP tube and the tip, it compensates for insufficient line contact, thereby avoiding misalignment caused by unevenness or concavity of the FRP tube's side end face, which affects grinding accuracy. It also improves manual labor efficiency, achieving a 100% grinding pass rate. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the present invention;

[0011] Figure 2 for Figure 1 The main view;

[0012] Figure 3 for Figure 1 Side view;

[0013] Figure 4 for Figure 1 A sectional view;

[0014] In the diagram, 1 is the cylindrical shell, 2 is the stepped section, 3 is the load-bearing block, 4 is the air bladder, 5 is the air nozzle, 6 is the air expansion strip, 7 is the cover plate, 8 is the screw, and 9 is the conical transition surface. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] like Figures 1-4 As shown, a special tooling for grinding FPR pipes includes: a cylindrical shell 1; a stepped portion 2, the stepped portion being formed at one end of the cylindrical shell; a force-bearing block 3, the force-bearing block being installed on the surface of the stepped portion; an air bladder 4, the air bladder being disposed inside the cylindrical shell; an air nozzle 5, the air nozzle being installed on the surface of the stepped portion and communicating with the air bladder; a strip-shaped opening groove, the strip-shaped opening groove being evenly distributed along the axial direction of the cylindrical shell and opened on the outer circumferential surface of the cylindrical shell; and an air expansion strip 6, the air expansion strip being located in the strip-shaped opening groove and connected to the air bladder.

[0017] During use, the other end of the cylindrical shell is inserted into the FPR tube, so that the stepped part contacts the FPR tube. Since the contact part of the stepped part is not a line contact but a surface contact, the contact area is increased, which compensates for the lack of line contact and avoids the misalignment caused by the elliptical unevenness or concavity of the FPR tube's side end face, thus affecting the grinding accuracy. By inflating the air bladder, the air expansion strip is bulged outward to contact the inner wall of the FPR tube. There can be multiple air expansion strips, such as six, evenly distributed in the strip-shaped opening groove of the cylindrical shell, further increasing the contact area with the FPR tube.

[0018] In one embodiment of this utility model, a cover plate 7 is fixedly connected to the other end of the cylindrical shell. The cover plate is used to form an integral part with the cylindrical shell, increasing the strength of the cylindrical shell. The cover plate can be fixed to the cylindrical shell by screws 8, or by other connection methods such as plug-in, snap-fit, or threaded connection.

[0019] As an embodiment of this utility model, the stepped portion is provided with a conical transition surface 9 at one end near the cylindrical shell. The conical transition surface refers to an inclined surface with a certain cone angle.

[0020] As a preferred embodiment of this utility model, the air nozzle is equipped with an air pressure regulating valve, or an air pressure regulating valve can be connected to each air expansion strip. Some customers have specific requirements for marking or indicating the outer circle position of the tube, so special treatment is required for the specified position. Adjusting the air pressure regulating valve ensures that the stamping pressure of each air expansion strip is different, and the centripetal position of the tube will shift as required to achieve the desired result and meet individual requirements. By adjusting the air pressure, the position of the FRP tube at different angles, i.e., the concentricity, can be adjusted, which compensates for the lack of line contact defects and allows for manual correction of the concentricity and precision requirements of different tubes. This avoids misalignment caused by unevenness or concavity of the elliptical end face of the FRP tube. At the same time, the grinding angle of the FRP tube can be adjusted according to customer needs, thus meeting the needs of production and use in multiple ways.

[0021] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A special tooling for grinding FPR pipes, characterized in that it includes: Cylindrical shell (1); Stepped portion (2), the stepped portion being formed at one end of the cylindrical shell; Force-bearing block (3), the force-bearing block being installed on the surface of the stepped portion; Airbag (4), the airbag being disposed inside the cylindrical shell; Air nozzle (5), the air nozzle being installed on the surface of the stepped portion and communicating with the airbag; Strip-shaped opening groove, the strip-shaped opening groove being evenly distributed along the axial direction of the cylindrical shell and opened on the outer circumferential surface of the cylindrical shell; Air expansion strip (6), the air expansion strip being located in the strip-shaped opening groove and connected to the airbag.

2. The special tooling for grinding FPR pipes as described in claim 1, characterized in that: The other end of the cylindrical shell is fixed with a cover plate (7).

3. The special tooling for grinding FPR pipes as described in claim 2, characterized in that: The cover plate is fixed to the cylindrical shell by screws (8).

4. The special tooling for FPR pipe grinding as described in claim 1, characterized in that: The stepped portion has a tapered transition surface (9) at one end near the cylindrical shell.

5. The special tooling for grinding FPR pipes as described in claim 1, characterized in that: The air nozzle is equipped with an air pressure regulating valve.

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