A constant temperature spinning wheel structure for an aluminum liner spinning and closing production line

Abstract

The application discloses a constant-temperature spinning wheel structure used in an aluminum liner spinning and closing production line, a front-to-rear through first sleeve hole is formed in the front end face of a temperature-reducing base with a mounting cavity, a front-to-rear through second sleeve hole is formed in the rear end face of the temperature-reducing base, a sleeve is inserted into the mounting cavity of the temperature-reducing base, the front end of the sleeve is fixedly placed in the first sleeve hole, and the rear end of the sleeve is fixedly placed in the second sleeve hole; a coil pipe is sleeved on the sleeve, the liquid inlet end and the liquid outlet end of the coil pipe respectively pass through corresponding through holes in the side wall of the temperature-reducing base and then extend out of the temperature-reducing base; a rotating shaft is supported by bearings and arranged in the sleeve, a spinning wheel is fixed to the front end of the rotating shaft extending out of the front end of the sleeve, a motor support of a motor is fixed to the rear end face of the temperature-reducing base, and the motor shaft of the motor is fixedly connected with the rear end of the rotating shaft. The structure has the following advantages: the indirect and uniform temperature reduction between the spinning wheel and the rotating shaft can be realized, and the spinning and closing qualified rate can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of hydrogen energy equipment manufacturing, and in particular to a constant-temperature spinning wheel structure used in an aluminum liner spinning and closing production line. BACKGROUND

[0002] Metal spinning is a metal plastic forming process that combines extrusion, forging, bending, deep drawing, rolling and ring rolling, and has the advantages of chipless machining, saving of raw materials, low cost, high product quality, etc., and is widely used in complex curved surface machining with high precision, light weight and high stability.

[0003] Metal spinning technology uses seamless metal pipes to manufacture various rotary hollow parts, which fundamentally eliminates the problems of discontinuity, strength reduction, brittle fracture and tensile stress concentration related to welds, and greatly improves the safety of high-pressure containers, and is widely used in aluminum liner manufacturing production lines for vehicle-mounted high-pressure hydrogen storage cylinders.

[0004] In the aluminum liner manufacturing production line for vehicle-mounted high-pressure hydrogen storage cylinders, the aluminum pipe base material is usually heated to 500℃±10℃ when the aluminum liner is spun and closed, in order to improve the flowability of the aluminum pipe base material and enhance the plastic processing capability of the aluminum pipe. However, the spinning wheel directly contacts the aluminum pipe base material during work, and the spinning wheel and the rotating shaft driving the spinning wheel work in a high-temperature and high-pressure environment for a long time, and also bear severe friction. This working environment greatly tests the service life and structural strength of the spinning wheel and the rotating shaft. Currently, the spinning wheel is cooled by directly pouring or atomizing and pouring cooling liquid or lubricating liquid on the aluminum pipe base material and the spinning wheel, which is a point-to-point local cooling method, resulting in processing defects such as oxide skin pressure injury, folding and groove marks on the surface of the aluminum pipe base material. SUMMARY

[0005] The technical problem to be solved by the present application is to provide a constant-temperature spinning wheel structure used in an aluminum liner spinning and closing production line, which indirectly and uniformly cools the spinning wheel and the rotating shaft, and improves the spinning and closing qualification rate.

[0006] The plastic deformation of the aluminum liner is extremely large when the high-temperature spinning closing is performed, if the cooling liquid is directly poured on the spinning wheel or the aluminum tube base material surface, the high-temperature aluminum tube base material surface temperature is not uniform, the aluminum tube base material flow speed is not consistent and other phenomena, cracks are easily formed on the aluminum tube base material surface, and the aluminum liner is scrapped. In order to solve the above problems, the technical scheme adopted by the present application is: the constant temperature spinning wheel structure in the aluminum liner spinning closing production line, comprising: a temperature reduction base with a mounting cavity, a first sleeve hole penetrating front and back is formed on the front end face of the temperature reduction base, a second sleeve hole penetrating front and back is formed on the rear end face of the temperature reduction base, the sleeve is inserted into the mounting cavity of the temperature reduction base, and the front end of the sleeve is fixed and placed in the first sleeve hole, and the rear end of the sleeve is fixed and placed in the second sleeve hole; the coil is sleeved on the sleeve, the inlet end and the outlet end of the coil respectively pass through the corresponding through holes on the side wall of the temperature reduction base and then extend out of the temperature reduction base; the rotating shaft is supported by the bearing and arranged in the sleeve, the spinning wheel is fixed to the front end of the rotating shaft extending out of the front end of the sleeve, the motor support with the motor is fixed to the rear end face of the temperature reduction base, and the motor shaft is fixedly connected with the rear end of the rotating shaft.

[0007] Further, the constant temperature spinning wheel structure in the aluminum liner spinning closing production line, wherein the coil made of a metal pipe or a plastic pipe is sleeved on the sleeve, and the inlet end and the outlet end of the coil are located on the same side.

[0008] Further, the constant temperature spinning wheel structure in the aluminum liner spinning closing production line, wherein a joint is arranged on the inlet end and the outlet end of the coil, and the joint is one of a clamp sleeve joint or a pagoda joint.

[0009] Further, the constant temperature spinning wheel structure in the aluminum liner spinning closing production line, wherein heat-conducting silica gel is filled in the gap between the rotating shaft and the sleeve.

[0010] Further, the constant temperature spinning wheel structure in the aluminum liner spinning closing production line, wherein the spinning wheel made of material GCr15 with a hardness of HRC60±2 is fixed to the front end of the rotating shaft extending out of the front end of the sleeve, the diameter of the spinning wheel is 250-300mm, and the working round angle radius of the spinning wheel is 8-20mm.

[0011] Further, the constant temperature spinning wheel structure in the aluminum liner spinning closing production line, wherein a shaft shoulder is arranged on the rotating shaft extending out of the front end of the sleeve, the spinning wheel is sleeved on the front end of the rotating shaft and fixed to the shaft shoulder through a plurality of first bolts, a cover plate is fixed to the front end of the rotating shaft through a plurality of second bolts, and the cover plate is tightly attached to the front end of the spinning wheel to cover the first bolts.

[0012] Further, the foregoing constant temperature spinning wheel structure used in the aluminum liner spinning closing production line, wherein the temperature reducing base is composed of a male base and a female base, a clamping groove is formed in the rear end face of the male base, a protruding boss corresponding to the clamping groove is arranged on the front end face of the female base, and the boss is clamped in the clamping groove.

[0013] The present application has the following advantages: ①The structure is simple and compact, and the processing and maintenance costs are low without changing the rotating shaft structure; ②During operation, the refrigerant medium in the coil pipe indirectly absorbs heat, thereby uniformly cooling the rotating shaft and the spinning wheel, and the spinning wheel and the aluminum pipe base material to be spun do not need to be poured with cooling liquid or lubricating liquid, which greatly improves the qualified rate of spinning closing, improves the working environment of the spinning wheel, and prolongs the service life of the spinning wheel. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a structural diagram of the constant temperature spinning wheel used in the aluminum liner spinning closing production line according to the present application.

[0015] Figure 2 is Figure 1 is an exploded view of the components in the constant temperature spinning wheel used in the aluminum liner spinning closing production line according to the present application.

[0016] Figure 3 is an exploded view of the temperature reducing base. DETAILED DESCRIPTION

[0017] The technical solutions of the present application will be further described in detail below in combination with the drawings and preferred embodiments.

[0018] As shown in Figure 1 , Figure 2 and Figure 3 , the constant temperature spinning wheel structure used in the aluminum liner spinning closing production line according to the present application includes: a temperature reducing base 1 with an installation cavity, a first sleeve hole 12 passing through the front and rear of the front end face 11 of the temperature reducing base 1, a second sleeve hole 14 passing through the front and rear of the rear end face 13 of the temperature reducing base 1, a sleeve 2 inserted into the installation cavity of the temperature reducing base 1, the front end of the sleeve 2 fixedly placed in the first sleeve hole 12, and the rear end of the sleeve 2 fixedly placed in the second sleeve hole 14. A coil pipe 3 is sleeved on the sleeve 2, the liquid inlet end 31 and the liquid outlet end 32 of the coil pipe 3 respectively extend out of the temperature reducing base 1 through the corresponding through holes 103 in the side wall of the temperature reducing base 1. A rotating shaft 4 is supported by bearings and arranged in the sleeve 2, a spinning wheel 5 is fixed to the front end of the rotating shaft 4 extending out of the front end of the sleeve 2, a motor support 7 of a motor 8 is fixed to the rear end face 13 of the temperature reducing base 1, and the motor shaft of the motor 8 is fixedly connected to the rear end of the rotating shaft 4. The rotating shaft 4 rotates relative to its own axis under the drive of the motor 8, thereby rotating the spinning wheel 5 fixed to the rotating shaft 4.

[0019] As Figure 3 shown in the figure, the coil pipe 3 in this embodiment can be made of metal pipe or plastic pipe coil, and the inlet end 31 and outlet end 32 of the coil pipe 3 are located at the same side. A joint 9 is arranged on each of the inlet end 31 and outlet end 32 of the coil pipe 3, and the joint 9 can be one of a sleeve joint or a pagoda joint. The inlet end 31 of the coil pipe 3 is communicated with a powered refrigerant medium source through the joint 9. The refrigerant medium can be antifreeze or water with a temperature not higher than 35℃.

[0020] In this embodiment, the gap between the rotating shaft 4 and the sleeve 2 is filled with heat-conducting silica gel, which can not only strengthen the heat transfer effect, improve the indirect heat exchange efficiency between the refrigerant medium in the coil pipe 3 and the rotating shaft 4 and the spinning wheel 5, and ensure uniform cooling of the spinning wheel 5, but also help lubrication and make the rotating shaft 4 rotate more smoothly.

[0021] The spinning wheel 5 in this embodiment is made of material GCr15 with a hardness of HRC60±2, and the diameter of the spinning wheel 5 is 250-300mm, and the working fillet radius of the spinning wheel 5 is 8-20mm. During the indirect cooling process, the working temperature of the spinning wheel 5 is generally 350-400℃.

[0022] As Figure 2 shown in the figure, the spinning wheel 5 in this embodiment is fixed on the rotating shaft 4 in the following manner: a shaft shoulder 41 is arranged on the rotating shaft 4 extending out of the front end of the sleeve 2, the spinning wheel 5 is sleeved on the front end of the rotating shaft 4 and fixed on the shaft shoulder 41 through a plurality of first bolts 51, the front end face of the spinning wheel 5 has an inwardly recessed mounting groove, and the head of each first bolt 51 is located in the mounting groove. A cover plate 6 is fixed on the front end of the rotating shaft 4 through a plurality of second bolts 61, and the cover plate 6 tightly abuts against the front end of the spinning wheel 5 to cover the first bolts 51 in the mounting groove.

[0023] As Figure 3 shown in the figure, in order to facilitate the installation of the sleeve 2 and the like, the temperature-reducing base 1 is composed of a male base 100 and a female base 101, and the internal cavities 104 of the male base 100 and the female base 101 are spliced to form a complete installation cavity. A clamping groove 15 is inwardly formed on the rear end face of the male base 100, and a protruding boss 16 corresponding to the clamping groove is arranged on the front end face of the female base 101, and the boss 16 is clamped in the clamping groove 15. The constant-temperature spinning wheel structure is installed on the spinning machine through the temperature-reducing base 1 and a plurality of fasteners.

[0024] The above description is only the preferred embodiment of the present application, and does not limit the present application in any other form, and any modification or equivalent change made according to the technical essence of the present application still falls within the scope of the present application.

[0025] The present application has the advantages of: ① without changing the structure of the rotating shaft 4, the overall structure is simple and compact, and the processing and maintenance cost is low; ② during work, the refrigerant medium of the input coil pipe 3 is indirectly heated to uniformly cool the rotating shaft 4 and the spinning wheel 5, without pouring cooling liquid or lubricating liquid on the spinning wheel 5 and the aluminum pipe base material to be spun, greatly improving the qualified rate of spinning closing, improving the working environment of the spinning wheel 5 and prolonging its service life.

Claims

1. A constant temperature spinning wheel structure for use in an aluminum liner spinning and closing production line, characterized in that: The application relates to a temperature-reducing base with an installation cavity, a first sleeve hole penetrating through the front and back of the temperature-reducing base is arranged on the front end surface of the temperature-reducing base, a second sleeve hole penetrating through the front and back of the temperature-reducing base is arranged on the rear end surface of the temperature-reducing base, a sleeve is inserted into the installation cavity of the temperature-reducing base, the front end of the sleeve is fixedly placed in the first sleeve hole, the rear end of the sleeve is fixedly placed in the second sleeve hole, a coil pipe made of a metal pipe or a plastic pipe is sleeved on the sleeve, the liquid inlet end and the liquid outlet end of the coil pipe respectively extend out of the temperature-reducing base through corresponding through holes in the side wall of the temperature-reducing base, and the liquid inlet end and the liquid outlet end of the coil pipe are located on the same side. A rotating shaft is supported by a bearing and arranged in the sleeve, a spinning wheel is fixed to the front end of the rotating shaft extending out of the front end of the sleeve, a motor support of a motor is fixed to the rear end surface of the temperature-reducing base, and the motor shaft of the motor is fixedly connected with the rear end of the rotating shaft. An axle shoulder is arranged on the rotating shaft extending out of the front end of the sleeve, the spinning wheel is sleeved on the front end of the rotating shaft and fixed to the axle shoulder through a plurality of first bolts, a cover plate is fixed to the front end of the rotating shaft through a plurality of second bolts, and the cover plate is tightly attached to the front end of the spinning wheel and covers the first bolts. The temperature-reducing base is composed of a male base and a female base, a clamping groove is arranged in the rear end surface of the male base, a convex platform protruding outwards and matched with the clamping groove is arranged on the front end surface of the female base, and the convex platform is clamped in the clamping groove. A joint is arranged on the liquid inlet end and the liquid outlet end of the coil pipe, and the joint is one of a clamp joint and a pagoda joint.

2. The constant temperature spinning wheel structure for use in the production line of the spinning closure of the aluminum liner according to claim 1, characterized in that: Thermal conductive silica gel is filled in the gap between the rotating shaft and the sleeve.

3. The constant temperature spinning wheel structure for use in the production line of the spinning closure of the aluminum liner according to claim 1, characterized in that: A spinning wheel made of material GCr15 with a hardness of HRC60+ / -2 is fixed to the front end of the rotating shaft extending out of the front end of the sleeve, the diameter of the spinning wheel is 250-300mm, and the working circular corner radius of the spinning wheel is 8-20mm.

4. The constant temperature spinning wheel structure for use in the production line of the spinning closure of the aluminum liner according to claim 1, characterized in that: ​

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