Welding tool for air spring metal cover plate

Abstract

The invention provides a welding tool for an air spring metal cover plate, belongs to the technical field of air springs, overcomes the technical defect that an existing welding tool is not high in clamping quality, comprises a bottom plate, and is characterized in that a positioning plate is arranged on the bottom plate, a positioning seat is arranged in a positioning hole of the positioning plate, and the positioning seat is provided with a positioning groove. A step hole is formed in the positioning seat, a positioning shaft is arranged in the step hole in the positioning seat in a clearance mode, a tightening block is arranged on the outer circle of the lower end of the positioning shaft, the positioning shaft is driven to rotate through the tightening block, and the air spring metal cover plate and the lower bolt are screwed and fixed through internal threads in the positioning shaft. The positioning shaft can movably rotate, so that a screw of a welding piece can be tightened and fastened, the welding piece is ensured to be welded when being firmly connected, and the welding quality is improved; the tightening block is convenient to assemble and disassemble, and the welding efficiency is improved; and the threaded pin holes can be conveniently disassembled and replaced, so that the use is convenient.

Description

Technical Field

[0001] The invention belongs to the technical field of air springs, and in particular relates to a welding tool for a metal cover plate of an air spring. Background Art

[0002] In order to rapidly attenuate the vibration of the frame and body of a passenger car and improve the driving stability and comfort of the passenger car, the suspension system of a passenger car is generally equipped with an air spring assembly. Air springs have advantages that other vibration isolation devices cannot match. The stiffness of air springs can change with the change of load, so the natural frequency is almost unchanged under any load. Air springs have nonlinear elastic characteristics, and their characteristic curves can be designed into ideal shapes. For the same air spring, when the inflation pressure changes, different load-bearing capacities can be obtained. Therefore, one air spring can meet the requirements of multiple loads and has good economic benefits.

[0003] The air spring is mainly a spring component prepared by compressibility, which is set in a sealed elastic space using air. Its structure is relatively simple. The air spring is mainly composed of a sealed air elastic component and two cover plates. In order to facilitate the connection between the air spring and the vehicle body, each cover plate is also connected to a connecting pipe, and the air spring is connected to the vehicle body through the connecting pipe. Generally, the cover plate and connecting pipe of the air spring are made of metal, and welding is required when connecting the cover plate and the connecting pipe.

[0004] However, some welding tools currently in use usually have a supporting plate for placing the cover plate at the bottom of the frame. A simple fixing mechanism is provided on the supporting plate, which can only provide a simple fixing effect for the cover plate. Manual operation is required to place the connecting pipe on the cover plate, and manual operation is required to adjust the welding position. The positioning of the welding position and the welding effect vary from person to person. Therefore, during the welding process, there is a deviation in the welding position, and the processing efficiency is low.

[0005] In Chinese patent literature, there is an invention publication document with publication number CN 118578016 A, entitled A Passenger Car Air Spring Welding Fixture. The invention relates to the field of air spring welding technology, and specifically discloses a passenger car air spring welding fixture, comprising a frame, a bearing plate on the frame, a delivery mechanism comprising a receiving box fixed on the frame, and the receiving box is located directly above the bearing plate, both sides of the receiving box are provided with blocking plates for single-degree-of-freedom sliding, and a pushing mechanism comprises a guide bar 2 fixed on the frame, and two slide plates are provided for single-degree-of-freedom sliding on the guide bar 2. The passenger car air spring welding fixture of the invention controls two pushing claws to approach each other, and pushes the cover plate to move to directly below the receiving box, and then controls the two blocking plates to move away from each other to open a channel, so that the connecting pipe in the channel falls directly above the cover plate under its own weight, that is, the accurate placement of the connecting pipe on the cover plate is completed, and the position placement of the connecting pipe on the cover plate is not required to be manually operated, thereby reducing the position deviation of welding and improving the processing efficiency.

[0006] However, the welding tooling in the above patent documents is large, heavy, and costly, and the clamping quality cannot be guaranteed. How to improve the stability of clamping and improve welding efficiency is a technical problem that we urgently need to solve. Summary of the invention

[0007] The purpose of the present invention is to provide a welding tool for a metal cover plate of an air spring to solve the above-mentioned technical problems existing in the prior art.

[0008] According to the above-mentioned purpose, the technical solution of the present invention is: a welding tool for an air spring metal cover plate, comprising a base plate, characterized in that: a positioning plate is horizontally and parallelly provided on the base plate through a limiting sleeve, the positioning plate is provided with a countersunk hole and a positioning hole, the positioning plate is installed and connected with the limit sleeve through the countersunk hole, a positioning seat is provided in the positioning hole, a positioning shaft is provided in the gap in the step hole in the positioning seat, a tightening block that can fasten the positioning shaft to the lower end of the positioning seat is provided on the outer circle of the lower end of the positioning shaft, the positioning shaft is provided with a step hole, the upper part of the step hole is provided with an internal thread matching with the lower bolt of the air spring metal cover plate, the positioning shaft is also provided in the step hole of the positioning seat on the upper part of the positioning shaft, and the lower bolt of the air spring metal cover plate passes through its inner hole. The positioning shaft is driven to rotate by the tightening block, and the air spring metal cover plate is tightened and fixed with the lower bolt through the internal thread in the positioning shaft.

[0009] Furthermore, an outer circle at the lower end of the positioning shaft is provided with an external thread, and an inner hole of the tightening block is provided with an internal thread matching the external thread.

[0010] Furthermore, a threaded pin hole vertically connected to the internal threaded hole is also provided on the outer circle of the tightening block.

[0011] In further detail, the threaded pin hole extends through the entire diameter of the tightening block.

[0012] Furthermore, the bottom plate is provided with a mounting hole connected to the limiting sleeve.

[0013] Furthermore, the mounting hole is a threaded hole, and the limiting sleeve is provided with an external thread that is tightly matched with the threaded hole.

[0014] Furthermore, the bottom plate is also provided with fixing holes for fixing the bottom plate on the workbench.

[0015] More specifically, the positioning plate is also provided with a hole which is in communication with and aligned with the fixing hole.

[0016] The above-mentioned welding tooling for the air spring metal cover, the positioning seat, the positioning shaft and the positioning sleeve are made of stainless steel.

[0017] Compared with the prior art, the advantages and beneficial effects of the present invention are:

[0018] 1. The inner hole of the positioning shaft in the positioning seat of the product of the present invention is provided with a thread, and the positioning shaft can be movably rotated, so that the screws of the welded parts can be tightened and fastened, ensuring that the welded parts are firmly connected when welding, thereby improving the welding quality;

[0019] 2. The product of the present invention is provided with a tightening block, which can not only tighten the welded parts, but also tighten the positioning shaft connecting the welded parts, which is convenient for loading and unloading and improves the welding efficiency;

[0020] 3. The tightening block of the product of the present invention is provided with a threaded pin hole, so that the positioning shaft and the tightening block can be connected as one or separated, which is convenient for disassembly and replacement and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a front view structural schematic diagram of the product of the present invention;

[0022] Figure 2 It is a schematic diagram of the top view of the structure of the product of the present invention;

[0023] Figure 3 This is a front view structural schematic diagram of the bottom plate of the product of the present invention;

[0024] Figure 4 It is a front view structural schematic diagram of the positioning plate of the product of the present invention;

[0025] Figure 5 It is a front view structural schematic diagram of the positioning seat of the product of the present invention;

[0026] Figure 6 It is a front view structural schematic diagram of the positioning shaft of the product of the present invention;

[0027] Figure 7 This is a front view structural schematic diagram of the tightening block of the product of the present invention;

[0028] Figure 8 It is a schematic diagram of the top view of the tightening block of the product of the present invention;

[0029] Fig. 9 This is a front view structural diagram of the positioning sleeve of the product of the present invention;

[0030] In the figure: 1. Base plate; 2. Limit sleeve; 3. Tightening block; 4. Positioning seat; 5. Positioning shaft; 6. Positioning sleeve; 7. Positioning plate; 8. Countersunk hole; 9. Positioning hole; 10. Mounting hole; 11. Fixing hole; 12. Internal thread; 13. Threaded pin hole. DETAILED DESCRIPTION

[0031] Combination Figure 1-Figure 9 , is a schematic diagram of the principle structure of an embodiment of a welding tool for an air spring metal cover plate of the present invention, the welding tool for the air spring metal cover plate comprises a base plate 1, a positioning plate 7 is horizontally and parallelly provided on the base plate 1 through a limiting sleeve 2, a mounting hole 10 connected to the limiting sleeve 2 is provided on the base plate 1, the mounting hole 10 is a threaded hole, and the limiting sleeve 2 is provided with an external thread tightly matched with the threaded hole; the base plate 1 is also provided with a fixing hole 11 for fixing the base plate 1 on the workbench, the positioning plate 7 is also provided with a hole that is aligned with the fixing hole 11, the positioning plate 7 is provided with a countersunk hole 8 and a positioning hole 9, the positioning plate 7 is installed and connected with the limiting sleeve 2 through the countersunk hole 8, a positioning seat 4 is provided in the positioning hole 9, and a step hole in the positioning seat 4 A positioning shaft 5 is provided in the inner gap, and a tightening block 3 is provided on the outer circle of the lower end of the positioning shaft 5 for fastening the positioning shaft 5 to the lower end of the positioning seat 4. A step hole is provided in the positioning shaft 5, and an internal thread 12 is provided in the upper part of the step hole to match the lower bolt of the air spring metal cover plate. A positioning sleeve 6 is also provided in the step hole of the positioning seat 4 on the upper part of the positioning shaft 5, through which the lower bolt of the air spring metal cover plate passes. In order to prevent the welding tool from rusting during use and to avoid the lower bolt of the air spring metal cover plate being stuck, the positioning seat 4, the positioning shaft 5 and the positioning sleeve 6 are made of stainless steel. The positioning shaft 5 is driven to rotate by the tightening block 3, and the air spring metal cover plate is tightened and fixed with the lower bolt through the internal thread 12 in the positioning shaft 5.

[0032] Preferably, an external thread is provided on the outer circle of the lower end of the positioning shaft 5, and an internal thread matching it is provided in the inner hole of the tightening block 3. A threaded pin hole 13 vertically connected to the internal threaded hole is also provided on the outer circle of the tightening block 3, and the threaded pin hole 13 runs through the entire diameter of the tightening block 3.

[0033] During assembly, first screw the four limiting sleeves 2 into the mounting holes 10 of the base plate 1, then align the positioning plate 7 with the upper end of the limiting sleeve 2 and put it in, make sure that the positioning plate 7 and the front of the base plate 1 are on one side, then use the screws to screw in through the countersunk holes 8 and the limiting sleeve 2. Note that the screws should not be screwed in at once. When all four screws can be screwed in by hand, screw the diagonal screws into place with a sheet metal hand, then put the positioning seat 4 into the positioning hole 9 of the positioning plate 7, press them into place, then put the positioning shaft 5 into the step hole in the positioning seat 4, and tighten it with a tightening block. 3 Screw into the positioning shaft 5 from the lower end of the positioning seat 4, and screw the screw into the threaded pin hole 13 of the tightening block 3, be careful not to screw it into place, then put the positioning sleeve 6 into the step hole on the upper part of the positioning seat 4, and press it into place, then align the fixing hole 11 on the bottom plate 1 of the entire tooling with the fixing threaded hole on the workbench, and tighten it into place with screws. Since the distance between the positioning plate 7 and the bottom plate 1 is not large, it is inconvenient to tighten the screw with a tool. You can extend the tightening tool from the hole on the positioning plate 7 that is opposite to the fixing hole 11 of the bottom plate 1 to tighten the screw.

[0034] When clamping the product, first insert the lower bolt of the air spring metal cover plate through the inner hole of the positioning sleeve 6 on the upper part of the positioning plate 7, screw down the tightening block 3, tighten the screw in the threaded pin hole 13 on the tightening block 3, allow the tightening block 3 and the positioning shaft 5 to rotate together, tighten the tightening block 3, ensure that the lower bolt of the air spring metal cover plate and the positioning shaft 5 are tightened into place, then loosen the screw in the threaded pin hole 13 on the tightening block 3, tighten the tightening block 3, ensure that the tightening block 3 locks the positioning shaft 5 tightly on the lower end face of the positioning seat 4.

[0035] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0036] Although the following terms are frequently used in this article: 1. bottom plate; 2. limiting sleeve; 3. tightening block; 4. positioning seat; 5. positioning shaft; 6. positioning sleeve; 7. positioning plate; 8. countersunk hole; 9. positioning hole; 10. mounting hole; 11. fixing hole; 12. internal thread; 13. threaded pin hole, etc., the possibility of using other terms is not excluded. The use of these terms is only for the purpose of more conveniently describing and explaining the essence of the present invention; interpreting them as any additional limitation is contrary to the spirit of the present invention.

[0037] The above is an introduction to the welding tooling for the air spring metal cover provided by the present invention. In the introduction, specific preferred embodiments are used to illustrate the principles and implementation methods of the present invention. These embodiments are only used to help understand the principles and core ideas of the present invention. It should be pointed out that for ordinary technicians in this field, without departing from the design ideas of the present invention, the implementation plans in the above embodiments can be further combined or replaced, and the present invention can be improved and modified in several ways. These improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A welding tool for a metal cover plate of an air spring, comprising a base plate (1), characterized in that: A positioning plate (7) is horizontally arranged on the bottom plate (1) through the limiting sleeve (2), and the positioning plate (7) is provided with a countersunk hole (8) and a positioning hole (9). The positioning plate (7) is installed and connected with the limiting sleeve (2) through the countersunk hole (8). A positioning seat (4) is arranged in the positioning hole (9), and a positioning shaft (5) is arranged in the gap in the step hole in the positioning seat (4). A tightening block is arranged on the outer circle of the lower end of the positioning shaft (5) so as to fasten the positioning shaft (5) to the lower end of the positioning seat (4). (3), a stepped hole is provided in the positioning shaft (5), and an internal thread (12) is provided in the upper part of the stepped hole to match the lower bolt of the metal cover plate of the air spring. A positioning sleeve (6) is also provided in the stepped hole of the positioning seat (4) on the upper part of the positioning shaft (5), and the lower bolt of the metal cover plate of the air spring passes through its inner hole. The positioning shaft (5) is driven to rotate by the tightening block (3), and the metal cover plate of the air spring is screwed and fixed to the lower bolt through the internal thread (12) in the positioning shaft (5).

2. The welding tool for the metal cover of the air spring according to claim 1 is characterized in that: The outer circle of the lower end of the positioning shaft (5) is provided with an external thread, and the inner hole of the tightening block (3) is provided with an internal thread matching the external thread.

3. The welding tool for the metal cover of the air spring according to claim 2 is characterized in that: The outer circle of the tightening block (3) is also provided with a threaded pin hole (13) vertically connected to the internal threaded hole.

4. The welding tool for the metal cover of the air spring according to claim 3 is characterized in that: The threaded pin hole (13) extends through the entire diameter of the tightening block (3).

5. The welding tool for the metal cover of the air spring according to claim 1, characterized in that: The base plate (1) is provided with a mounting hole (10) connected to the limiting sleeve (2).

6. The welding tool for the metal cover of the air spring according to claim 5, characterized in that: The mounting hole (10) is a threaded hole, and the limiting sleeve (2) is provided with an external thread that is tightly matched with the threaded hole.

7. The welding tool for the metal cover of the air spring according to claim 5, characterized in that: The base plate (1) is also provided with fixing holes (11) for fixing the base plate (1) on a workbench.

8. The welding tool for the metal cover of the air spring according to claim 7, characterized in that: The positioning plate (7) is also provided with a hole which is in communication and aligned with the fixing hole (11).

9. The welding tool for the metal cover of the air spring according to any one of claims 1 to 8, characterized in that: The positioning seat (4), the positioning shaft (5) and the positioning sleeve (6) are made of stainless steel.

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