A friction stir welding debris cleaning device

Abstract

The utility model belongs to the technical field of friction stir welding scrap cleaning, especially a kind of friction stir welding scrap cleaning device.It includes installation cover, and the lower end of installation cover is provided with cleaning brush, and driving pipe is worn in installation cover;Driving pipe is sleeved with limit ring, and limit slot is set up on the inner side wall of installation cover;At least three first sliding slots are set up on the inner side wall of installation cover, and all first sliding slots are provided with driving block;Driving pipe is provided with external thread, and all driving blocks are provided with internal thread;The inner side wall of installation cover is provided with the through slot of inner and outer communication, and the clamping plate is independently installed in through slot, and the top of clamping plate is the inclined surface of inner high outer bottom, and the second sliding slot is set up on inclined surface, and the lower end of driving block is fixed with sliding block.The utility model through rotating driving pipe, so that four connecting rings are simultaneously clamped and fixed on stirring shaft, and installation is quickly completed, and driving pipe is reversed to be rotated, and disassembly can be quickly completed, to improve the installation efficiency of cleaning brush.

Description

Technical Field

[0001] This utility model belongs to the field of friction stir welding debris cleaning technology, and in particular relates to a friction stir welding debris cleaning device. Background Technology

[0002] Friction stir welding, as a solid-state joining technology, has advantages such as minimal welding deformation, no porosity, and no spatter, and is widely used in aerospace, rail transportation, and shipbuilding industries. However, in actual welding processes, due to incomplete plastic flow of materials or improper matching of process parameters, trace metal debris may still be generated. If this debris is not cleaned in time, it may affect weld quality, contaminate equipment, and even cause problems in subsequent processing.

[0003] In existing technologies, cleaning brushes are installed on or near the mixing shaft. When the equipment is running, the brush head moves with the mixing shaft to achieve the purpose of cleaning. However, during installation, the threaded holes need to be aligned with each other, and then multiple screws need to be installed one by one. During maintenance, they need to be removed one by one, which makes the overall installation or disassembly process relatively slow. Utility Model Content

[0004] The purpose of this invention is to provide a device for cleaning debris from friction stir welding, which can improve the efficiency of installing or removing cleaning brushes to a certain extent.

[0005] The aforementioned friction stir welding debris cleaning device includes a mounting sleeve. A cleaning brush for cleaning debris is installed at the lower end of the mounting sleeve. An independent drive tube is installed inside the mounting sleeve, with its upper end extending out of the mounting sleeve and located outside the sleeve. A limit ring is fitted onto the drive tube, and a limit groove is provided on the inner wall of the mounting sleeve to restrict the up-and-down movement of the limit ring. Below the limit groove, at least three first sliding grooves are provided on the inner wall of the mounting sleeve at equal intervals along their circumference. Each first sliding groove contains a drive block that slides along the length of the mounting sleeve. The drive tube has an external thread, and each drive block has an internal thread that engages with the external thread. A through groove, communicating with the outside, is provided on the side wall of the mounting sleeve at the lower end of each first sliding groove. A clamping plate is independently installed within each through groove. The top of the clamping plate is an inclined surface with an inner higher surface and an outer lower surface. Second sliding grooves are provided on the inclined surface along the length of the clamping plate. A slider, limited to sliding along the length of the second sliding groove, is fixed to the lower end of each drive block.

[0006] Furthermore, the upper end of the drive tube is fitted with a collar to facilitate its rotation, and the outer ring of the collar is provided with anti-slip texture.

[0007] Furthermore, the cleaning brush has an overall ring-shaped structure, and the cleaning brush is fixed to and communicates with the lower end of the mounting sleeve.

[0008] Furthermore, the lower end of the mounting sleeve is connected to a connecting ring that communicates with it, and the cleaning brush is located directly below the connecting ring and is on the same straight line as the center line of the mounting sleeve; the cleaning brush and the connecting ring are connected by several connecting arms, and all the connecting arms are distributed at equal intervals along the circumference of the cleaning brush.

[0009] Furthermore, the bristles of the cleaning brush are ceramic bristles.

[0010] Furthermore, the cross-sections of the slider and the second groove are both adapted isosceles trapezoidal structures.

[0011] Furthermore, all the bristles are arranged in a spiral.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] This invention uses a rotating drive tube to simultaneously clamp and fix four connecting rings onto the stirring shaft, enabling quick installation. Reverse rotation of the drive tube allows for quick disassembly, thereby improving the installation efficiency of the cleaning brush. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 3 This is an exploded structural diagram of the present invention;

[0017] Figure 4 for Figure 1 A magnified schematic diagram of the local structure at point A;

[0018] Figure 5 for Figure 1 A schematic diagram of the structure viewed from below;

[0019] The components in the diagram are named as follows: 1. Mounting sleeve; 2. Drive block; 3. Clamping plate; 4. Connecting ring; 5. Connecting arm; 6. Cleaning brush; 7. Shaft collar; 8. Limiting ring; 9. Drive tube; 10. Slider. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0021] Example

[0022] The friction stir welding debris cleaning device described in this embodiment, such as Figures 1 to 5As shown, the device includes a mounting sleeve 1, with a cleaning brush 6 for removing debris at its lower end. The cleaning brush 6 has a ring-shaped structure and is fixed to and communicates with the lower end of the mounting sleeve 1. In use, the mounting sleeve 1 is mainly used to mount and fix the device onto the stirring shaft of the friction stir welding equipment.

[0023] like Figure 2 and Figure 3 As shown, the lower end of the mounting sleeve 1 is connected to a connecting ring 4, and the cleaning brush 6 is located directly below the connecting ring 4 and aligned with the center line of the mounting sleeve 1. The cleaning brush 6 and the connecting ring 4 are connected by several connecting arms 5, all of which are evenly spaced along the circumference of the cleaning brush 6. During use, the appropriate length of the connecting arm 5 is selected according to the stirring shaft of the friction stir welding equipment. The lower end of the connecting arm 5 can be connected to the cleaning brush 6 with screws, facilitating the replacement of the cleaning brush 6 with severely worn bristles. The connecting ring 4 is fixed to the lower end of the mounting sleeve 1 with screws; these components are manufactured and do not require on-site assembly. The center line of the connecting ring 4 is aligned with the center line of the mounting sleeve 1.

[0024] The bristles of cleaning brush 6 are ceramic bristles. During use, cleaning brush 6 requires high-speed rotation, and the friction between the agitator shaft shoulder and the surface of the welded fixture generates high temperatures. Therefore, the bristles of cleaning brush 6 need to be made of a high-temperature resistant material, namely ceramic bristles. Ceramic bristles are made of high-temperature ceramic materials and have excellent wear resistance and corrosion resistance. Ceramic bristles can be used continuously in high-temperature environments and can withstand temperatures up to 1000℃. Ceramic bristles are suitable for cleaning and polishing in industries such as steel, metal, and ceramics. Alternatively, zircon bristles can also be used, which also possess high-temperature resistance and abrasion resistance.

[0025] like Figure 5 As shown, the bristles are arranged in a spiral. This arrangement helps to remove debris more effectively and prevents it from remaining on the shoulder of the mixing shaft, which could affect the quality of the weld.

[0026] like Figure 1 and Figure 3 As shown, the mounting sleeve 1 contains an independent drive tube 9, the upper end of which protrudes from the mounting sleeve 1 and is located on the outside of the mounting sleeve 1. A limit ring 8 is fitted onto the drive tube 9, and a limit groove is provided on the inner side wall of the mounting sleeve 1 to restrict the vertical movement of the limit ring 8. The limit ring 8 restricts the drive tube 9 to rotate only in place and prevents it from moving up and down. To install the limit ring 8 in the limit groove, the mounting sleeve 1 needs to be designed with two symmetrical halves. The limit ring 8 is installed in the limit groove by merging the two halves together, and then the two halves of the mounting sleeve 1 are fixed together with screws.

[0027] Below the corresponding limiting groove, at least three first sliding grooves are provided on the inner wall of the mounting sleeve 1 at equal intervals along its circumference. All first sliding grooves are provided with driving blocks 2 that slide along the length direction of the mounting sleeve 1. The driving tube 9 is provided with external threads, and all driving blocks 2 are provided with internal threads that are threadedly engaged with the external threads.

[0028] The upper end of the drive tube 9 is fitted with a collar 7 to facilitate its rotation. The outer ring of the collar 7 has anti-slip texture. In use, the drive tube 9 is rotated by rotating the collar 7.

[0029] When the drive tube 9 rotates, the drive block 2 slides up and down in the first groove through the cooperation of the external thread and the internal thread on the drive block 2; the front and rear side walls of the drive block 2 are in contact with the front and rear side walls of the first groove, restricting the back and forth movement of the drive block 2.

[0030] For each of the first sliding grooves, a through groove is formed on the side wall of the mounting sleeve 1, with the inner and outer sides communicating. A clamping plate 3 is independently installed in the through groove. The top of the clamping plate 3 is an inclined surface with the inner side higher than the outer side. A second sliding groove is formed on the inclined surface along the length direction of the clamping plate 3. A slider 10, which is limited to sliding along the length direction of the second sliding groove, is fixed to the lower end of the driving block 2. In this embodiment, there are four first sliding grooves, so there are also four clamping plates 3. The four clamping plates 3 are evenly distributed along the circumference of the mounting sleeve 1. The side of the inclined surface of the top of the clamping plate 3 inside the mounting sleeve 1 is higher than the side outside the mounting sleeve 1.

[0031] like Figure 3 and Figure 4 As shown, the cross-sections of the slider 10 and the second slide groove are both adapted isosceles trapezoidal structures; the isosceles trapezoidal structure ensures that the slider 10 can only slide along its length within the second slide groove. The lower end of the drive block 2 is in contact with the inclined surface at the top of the clamping plate 3.

[0032] In use, the inclined surface at the top of the clamping plate 3 and the lower end of the drive block 2 form a wedge-shaped fit, converting the axial force of the drive block 2 moving downward into a radial force that pushes the clamping plate 3 along the center direction of the mounting sleeve 1. When the drive tube 9 rotates, all the drive blocks 2 are driven downward, causing all the clamping plates 3 to move towards the center direction of the mounting sleeve 1. When the mounting sleeve 1 is fitted onto the stirring shaft, rotating the drive tube 9 causes all the clamping plates 3 to simultaneously clamp the stirring shaft, fixing it at the center of the mounting sleeve 1, thus preventing the stirring shaft from shaking due to an unbalanced center of gravity of the mounting sleeve 1 during rotation.

[0033] The reverse rotation of the drive tube 9 causes the drive block 2 to slide upwards. Through the engagement of the slider 10 and the second sliding groove, all the clamping plates 3 move outwards, releasing the clamping and fixing of the stirring shaft. Specifically, when the drive block 2 moves upwards, the top of the clamping plate 3 abuts against the upper wall of the through groove, restricting its movement. The upward movement of the drive block 2 causes the clamping plates 3 to move outwards. The front and rear side walls of the clamping plates 3 have slots, and limit blocks are fixed to the front and rear side walls of the through groove. The limit blocks and slots are in a sliding engagement, restricting the movement of the clamping plates 3 along the axial direction of the mounting sleeve 1, thus making the structure more stable. During production, a layer of lubricating oil is applied to the contact parts of each moving component to reduce friction, especially between the second sliding groove and the slider 10. Furthermore, by converting the axial force of the drive block 2 into a radial force driving the clamping plates 3, the angle between the top and bottom of the clamping plates 3 is set between 45° and 60°.

[0034] In actual use, the installation sleeve 1 is put on from the lower end of the stirring shaft, and then the shaft collar 7 is rotated with one hand while holding the installation sleeve 1 with the other hand, so that the clamping plate 3 is clamped on the stirring shaft, thus completing the installation of the product. The shaft collar 7 is rotated in the opposite direction to complete the disassembly. The operation is simple and convenient, which can improve the installation or disassembly efficiency of the cleaning brush 6.

[0035] During installation, it is important to ensure that the lowest horizontal height of the bristles of cleaning brush 6 is slightly lower than the height of the shoulder of the stirring shaft. This will allow the bristles of cleaning brush 6 to contact the workpiece for cleaning.

Claims

1. A device for cleaning debris from friction stir welding, comprising a mounting sleeve (1), wherein a cleaning brush (6) for cleaning debris is provided at the lower end of the mounting sleeve (1), characterized in that: The mounting sleeve (1) is fitted with an independent drive tube (9), the upper end of which protrudes from the mounting sleeve (1) and is located on the outside of the mounting sleeve (1); a limit ring (8) is fitted on the drive tube (9), and a limit groove is provided on the inner wall of the mounting sleeve (1) to limit the up and down movement of the limit ring (8); below the limit groove, at least three first sliding grooves are provided on the inner wall of the mounting sleeve (1) at equal intervals along their circumference, and each first sliding groove is provided with a sliding mechanism that slides along the length of the mounting sleeve (1). Drive block (2); external thread is provided on drive tube (9), and internal thread is provided on all drive blocks (2) in a threaded fit with external thread; corresponding to the lower end of each first slide groove, a through groove with internal and external communication is provided on the side wall of mounting sleeve (1), and a clamping plate (3) is independently provided in the through groove. The top of the clamping plate (3) is an inclined surface with an inner high and an outer bottom. A second slide groove is provided on the inclined surface along the length direction of the clamping plate (3). A slider (10) that is limited to sliding along the length direction of the second slide groove is fixed at the lower end of the drive block (2).

2. The friction stir welding debris cleaning device according to claim 1, characterized in that: The upper end of the drive tube (9) is fitted with a collar (7) to facilitate its rotation, and the outer ring of the collar (7) is provided with anti-slip texture.

3. The friction stir welding debris cleaning device according to claim 1, characterized in that: The cleaning brush (6) has an overall ring structure and is fixed to the lower end of the mounting sleeve (1) and communicates with it.

4. The friction stir welding debris cleaning device according to claim 3, characterized in that: The lower end of the mounting sleeve (1) is connected to a connecting ring (4) that communicates with it. The cleaning brush (6) is located directly below the connecting ring (4) and is on the same straight line as the center line of the mounting sleeve (1). The cleaning brush (6) and the connecting ring (4) are connected by several connecting arms (5), and all the connecting arms (5) are evenly distributed along the circumference of the cleaning brush (6).

5. The friction stir welding debris cleaning device according to claim 3, characterized in that: The bristles of the cleaning brush (6) are ceramic bristles.

6. The friction stir welding debris cleaning device according to claim 1, characterized in that: The cross-sections of the slider (10) and the second groove are both adapted isosceles trapezoidal structures.

7. The friction stir welding debris cleaning device according to claim 3, characterized in that: All the bristles are arranged in a spiral.

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