Friction stir welding flash removing device

Abstract

The invention discloses a friction stir welding flash removing device. The friction stir welding flash removing device comprises a shell; the deburring assembly is arranged below the shell, the deburring assembly comprises a first driving part and a cutter, the first driving part is fixed in the shell, the cutter is in transmission connection with the first driving part, the first driving part is configured to drive the cutter to rotate, and the cutter is driven by the first driving part to rotate. And the cutter rotates to cut the flash when the cutter rotates. Flanges on the two sides of a weld joint are removed in the mode that the first driving piece drives the cutter to rotate, the problem that resistance is large when a traditional scraper knife is used is solved, and the risk that the surface of a cold plate is scratched cannot occur.

Description

Technical Field

[0001] The invention relates to the technical field of flash removal, in particular to a device for removing flash from friction stir welding. Background Art

[0002] In the process of lithium battery assembly pallet and cold plate, stir friction welding is used for connection. Stir friction welding is a solid phase welding method that uses the friction heat generated by the high-speed rotation of the welding element and the parent material as the welding heat source. During the forward welding process, the parent material in the contact area with the welding element is partially in a flowing state, flowing from the forward side of the rotation to the rear. Among them, because the cold plate is overlapped on the pallet, the surface of the side beams and the front and rear casting beams around the pallet are in contact with the temperature-averaging plate side of the cold plate. Since the plane of some welding areas may be uneven, and the welding process parameters in different areas are different, the material close to the shoulder surface often overflows the weld during the extrusion process, forming flash on both sides of the weld. The flash on both sides of the weld not only affects the appearance of the product, but also affects the assembly of other parts of the lithium battery in the later stage. Therefore, it is usually necessary to effectively clean the flash generated during the welding process. At the same time, due to the unique welding process of stir friction welding, a certain "arc pattern" is usually formed on the surface of the weld, which has a certain impact on the spraying of the surface of the lithium battery in the later stage.

[0003] In the related art, the weld surface is usually scraped off with a scraper and grinded with a grinder. This method is simple and convenient, but relatively laborious in the cleaning process, and the flash edge is very sharp, which may easily cause scratches to the operator's fingers. It is not easy to clean some areas with thick flash. The weld is very close to the runner plate, and the scraper may easily scratch the surface of the runner plate. The runner plate has a high internal pressure and is relatively thin, so scratches may pose a certain risk during its later use. In addition, the grinding process may easily affect the area surrounding the weld, which may cause the runner plate to become thinner, thus affecting the service life of the cold plate. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a device for removing flash from a friction stir welding process, which removes the flash on both sides of the weld by using a first driving member to drive a tool to rotate, thereby overcoming the problem of large resistance when using a traditional scraper, and without the risk of scratching the cold plate surface.

[0005] According to an embodiment of the present invention, a device for removing flash from a friction stir welding process comprises: a shell; and a deburring assembly, wherein the deburring assembly is arranged below the shell, and the deburring assembly comprises: a first driving member and a tool, wherein the first driving member is fixed in the shell, the tool and the first driving member are connected in a transmission manner, and the first driving member is configured to drive the tool to rotate so as to cut the flash when the tool rotates.

[0006] According to the stir friction welding flash removal device of the embodiment of the present invention, the flash on both sides of the weld is removed by using the first driving member to drive the tool to rotate, thereby overcoming the problem of large resistance when using a traditional scraper and eliminating the risk of scratching the surface of the cold plate.

[0007] According to some embodiments of the present invention, the tool comprises: a tool spindle and a tool body, wherein the tool body is connected to the tool spindle, and a blade is provided on the edge of the tool body, wherein the maximum diameter of the blade is greater than the width of the weld.

[0008] According to some embodiments of the present invention, a curve of the tool body in a thickness direction is consistent with a curve of the weld.

[0009] According to some embodiments of the present invention, a protrusion is provided on a side of the tool body away from the tool spindle.

[0010] According to some embodiments of the present invention, the friction stir welding flash removal device further includes: a grinding assembly, wherein the grinding assembly is disposed below the shell and behind the deburring assembly, and the grinding assembly is used for grinding the weld.

[0011] According to some embodiments of the present invention, the grinding assembly includes: a second driving member and a grinding member, the second driving member is fixed in the shell, the grinding member and the second driving member are transmission connected, and the second driving member is configured to drive the grinding member to rotate so as to grind the weld when the grinding member rotates.

[0012] According to some embodiments of the present invention, the grinding member includes: a base and a friction plate, the base is transmission-connected to the second driving member, the friction plate and the base are detachably connected, a grinding surface is provided on the side of the friction plate facing away from the base, and the grinding surface is used for grinding the weld.

[0013] According to some embodiments of the present invention, a first clamping portion is disposed on the lower side of the base, and a second clamping portion is disposed on the upper side of the friction plate, and the first clamping portion and the second clamping portion are clamped together.

[0014] According to some embodiments of the present invention, a slider or a groove is disposed on the lower side of the base, and another slider or a groove is disposed on the upper side of the friction plate, and the slider and the groove are limitedly matched.

[0015] According to some embodiments of the present invention, the stir friction welding flash removal device also includes: a paddle, which is fixed below the shell and arranged between the deburring assembly and the grinding assembly, and is used to push the cut flash away from the weld.

[0016] According to some embodiments of the present invention, the paddle includes: a first portion and a second portion, one side of the first portion and one side of the second portion are connected to each other, and the other side of the first portion and the other side of the second portion are arranged outside the weld.

[0017] According to some embodiments of the present invention, the friction stir welding flash removal device further comprises: a battery, wherein the battery is disposed in the shell, and the battery is electrically connected to the deburring component and the grinding component.

[0018] According to some embodiments of the present invention, the friction stir welding flash removal device further includes: a bottom plate, the bottom plate is fixedly connected to the shell, and the bottom plate is arranged between the first driving member and the tool.

[0019] According to some embodiments of the present invention, the friction stir welding flash removal device further includes: at least two slide rails, at least two of the slide rails are arranged below the bottom plate, and at least two of the slide rails are respectively arranged on both sides of the weld.

[0020] According to some embodiments of the present invention, a handle is provided on the upper side of the housing.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which: Figure 1 is a schematic structural diagram of a device for removing flash from friction stir welding according to an embodiment of the present invention; Figure 2 is an exploded view of a device for removing flash from friction stir welding according to an embodiment of the present invention; Figure 3 is a schematic structural diagram of a tool according to an embodiment of the present invention; Figure 4 Schematic diagram of the structure of a grinding piece according to an embodiment of the present invention.

[0023] Reference numerals: 1. Handle; 2. Battery; 3. Screw; 4. Speed ​​regulator; 5. First drive member; 6. Bearing; 7. Coupling; 8. Grinding member; 9. Pick; 10. Slide rail; 11. Tool; 12. Bottom plate; 13. Second drive member; 14. Housing; 15. Tool spindle; 16. Tool body; 17. Blade; 18. Grinding tool spindle; 19. Base; 20. Friction plate. DETAILED DESCRIPTION

[0024] Embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Embodiments of the present invention are described in detail below.

[0025] Reference below Figure 1-Figure 4 A friction stir welding flash removal device according to an embodiment of the present invention is described.

[0026] Reference Figure 1 and Figure 2 As shown, the flash removal device for friction stir welding according to the embodiment of the present invention comprises: a housing 14; a flash removal assembly, which is arranged below the housing 14, and comprises: a first driving member 5 and a cutter 11, the first driving member 5 is fixed in the housing 14, the cutter 11 and the first driving member 5 are in transmission connection, and the first driving member 5 is configured to drive the cutter 11 to rotate so as to cut the flash when the cutter 11 rotates. That is, the flash on both sides of the weld is removed by driving the cutter 11 to rotate by the first driving member 5, thereby avoiding the problem of large resistance of using a traditional scraper, and there is no risk of scratching the surface of the cold plate.

[0027] A coupling 7 is provided between the tool 11 and the first driving member 5 , that is, the rotating shaft of the first driving member 5 is connected to the tool 11 through the coupling 7 and drives the tool 11 to rotate.

[0028] Furthermore, the speed of the first driving member 5 can be adjusted by controlling the voltage and current of the speed regulator 4. The rotating shaft of the first driving member 5 is connected to the tool 11 through the coupling 7 and drives the tool 11 to rotate. The rotation speed of the tool 11 can be further adjusted by adjusting the speed of the first driving member 5.

[0029] Of course, the tool 11 and the first driving member 5 may also be connected via other connection structures.

[0030] Therefore, the flash on both sides of the weld is removed by using the first driving member 5 to drive the tool 11 to rotate, thereby overcoming the problem of large resistance when using a traditional scraper, and there is no risk of scratching the surface of the cold plate.

[0031] Among them, Figure 3As shown, the tool 11 includes: a tool spindle 15 and a tool body 16, the tool body 16 is connected to the tool spindle 15, and a blade 17 is arranged at the edge of the tool body 16, and the maximum diameter of the blade 17 is greater than the width of the weld. The blade 17 is in a ring shape surrounding the tool body 16, and the blade 17 can be made of special alloy steel. The cross-sectional shape of the blade 17 is triangular, so that it is evenly stressed during the rotary cutting process, and the service life of the tool 11 is improved. The outermost diameter of the blade 17 is slightly wider than the width of the weld, so that the blade 17 is convenient for cutting the flash at the edge of the weld.

[0032] Furthermore, the curve of the tool body 16 in the thickness direction is consistent with the curve of the weld. That is, the arc of the tool body 16 in the thickness direction is consistent with the arc of the weld. This is because during the friction stir welding process, the middle of the weld is lower than the two sides of the weld. Therefore, the arc of the tool body 16 is consistent with the arc of the weld, so that the tool body 16 can fit the weld, which can effectively improve the cutting effect of the tool 11.

[0033] Reference Figure 3 As shown, a protrusion is provided on the side of the tool body 16 away from the tool spindle 15. Thus, by providing a protrusion at the bottom of the tool body 16, during the welding advancement process, the tool 11 rotates rapidly, and the outer side of the blade 17 contacts the bottom of the flash to cut off the connection between the flash and the base material. The protrusion at the bottom can prevent the tool 11 from contacting the base material due to excessive tilt angle of the device during operation.

[0034] In addition, the size of the tool 11 can be changed according to the cross-sectional shape and specific size of the weld. The tool spindle 15 is connected to the rotating shaft of the first driving member 5 through the coupling 7. The tool body 16 is in the shape of an ellipsoid, which enhances the strength and durability of the tool 11. The diameter of the ellipsoid is narrower than the width of the weld. The stir friction welding flash removal device also includes: a grinding component, which is arranged below the shell 14 and behind the de-burring component, and the grinding component is used to grind the weld. That is, a grinding component is also arranged on the rear side of the de-burring component, and the weld is smoothly polished by the grinding component. That is, the stir friction welding flash removal device integrates the de-burring component and the grinding component at the same time, first removes the flash and then grinds the edge of the weld. The stir friction welding flash removal device can complete the flash removal and weld grinding at the same time, which is conducive to reducing the post-processing work of stir friction welding; Combination Figure 2 and Figure 4As shown, the grinding assembly includes: a second driving member 13 and a grinding member 8, the second driving member 13 is fixed in the housing 14, the grinding member 8 is connected to the second driving member 13 by transmission, and the second driving member 13 is configured to drive the grinding member 8 to rotate, so as to grind the weld when the grinding member 8 rotates. In other words, the second driving member 13 drives the grinding member 8 to achieve smooth grinding of the weld, and the grinding member 8 can accurately grind the weld area without thinning and damaging other areas of the cold plate surface, which is conducive to improving the service life of the cold plate.

[0035] The second driving member 13 is connected to the grinding member 8 through the coupling 7 and drives the grinding member 8 to rotate. The rotation speed can be adjusted by the speed regulator 4. The grinding member 8 contacts the "arc pattern" in the middle of the weld and the edge of the weld to perform surface grinding on the weld area.

[0036] like Figure 4 As shown, the grinding piece 8 includes: a base 19 and a friction plate 20, the base 19 is transmission-connected to the second driving member 13, the friction plate 20 and the base 19 are detachably connected, and the friction plate 20 is provided with a grinding surface on the side facing away from the base 19, and the grinding surface is used to grind the weld. In other words, the grinding piece 8 is composed of the base 19 and the friction plate 20, wherein a grinding spindle is provided on the base 19, and a coupling 7 is provided between the grinding spindle and the second driving member 13, that is, the rotating shaft of the second driving member 13 is connected to the grinding spindle through the coupling 7 and drives the grinding piece 8 to rotate.

[0037] In addition, the friction plate 20 and the base 19 are detachably connected, that is, the friction plate 20 can be easily replaced.

[0038] And, the surface of the friction plate 20 is made of sandpaper, and the bottom is made of rubber, A first clamping part is provided on the lower side of the base 19, and a second clamping part is provided on the upper side of the friction plate 20, and the first clamping part and the second clamping part are clamped together. That is, the friction plate 20 and the base 19 are detachably fixedly connected by the first clamping part and the second clamping part. That is, a clamping groove can be provided on the friction plate 20, and a buckle can be provided on the base 19, so that when the friction plate 20 is installed, it can be realized by clamping the buckle and the clamping groove, and when the friction plate 20 is replaced, it can be realized by releasing the clamping cooperation between the buckle and the clamping groove.

[0039] Reference Figure 4 As shown, the lower side of the base 19 is provided with one of a slider and a groove, and the upper side of the friction plate 20 is provided with the other of the slider and the groove, and the slider and the groove are limitedly matched. That is, the lower side of the base 19 is provided with a certain number of concave wave patterns, and the upper surface of the friction plate 20 is provided with the same convex wave patterns, and the friction plate 20 is installed on the base 19 through the bonding effect of the wave patterns.

[0040] Reference Figure 1 and Figure 2 As shown, the device for removing flash from friction stir welding also includes: a paddle 9, which is fixed at the bottom of the shell 14 and is disposed between the deburring assembly and the grinding assembly. The paddle 9 is used to push the cut flash away from the weld. The paddles 9 are respectively arranged on both sides of the middle of the slide rail 10 at the bottom of the device. The height of the bottom of the paddle 9 is consistent with the height of the bottom of the slide rail 10. There is a gap between the slide rail 10 and the paddle 9, so that the cut flash on both sides are separated from the weld area under the guidance of the paddle 9, and the detached flash is discharged along the direction of the paddle 9 to make room for grinding the weld area. The top of the paddle 9 is connected to the bottom plate 12 in a "T" shape. Furthermore, the paddle 9 includes: a first part and a second part, one side of the first part and one side of the second part are connected to each other, and the other side of the first part and the other side of the second part are arranged outside the weld. That is to say, the width of the connection between the front side of the first part and the front side of the second part is smaller than the width of the weld, and the distance between the rear side of the first part and the rear side of the second part is consistent with the distance between the two side slide rails 10, presenting an "eight" shape, so that the burrs cut off on both sides are separated from the weld area under the guidance of the paddle 9, and the detached burrs are discharged along the direction of the paddle 9.

[0041] And, refer to Figure 2 As shown, the friction stir welding flash removal device also includes: a battery 2, the battery 2 is arranged in the housing 14, and the battery 2 is electrically connected to the flash removal component and the grinding component. In other words, the first driving member 5 and the second driving member 13 can be powered by the battery 2 in the friction stir welding flash removal device, so that the friction stir welding flash removal device can be miniaturized as a whole, so that it is convenient for operators to take it, so that it is convenient for operators to remove the flash on both sides of the weld.

[0042] Of course, the friction stir welding flash removal device can be powered by plugging an electric wire into a socket board, which can further realize the miniaturized design of the friction stir welding flash removal device.

[0043] Reference Figure 2 As shown, the friction stir welding flash removal device also includes: a bottom plate 12, the bottom plate 12 and the shell 14 are fixedly connected, and the bottom plate 12 is arranged between the first driving member 5 and the tool 11. First, during the rapid rotation of the tool 11, the flash on both sides of the weld will be partially broken, and the locally broken "small flash" may splash. By arranging the bottom plate 12 on the lower side of the shell 14, the bottom plate 12 can separate the shell 14 from the flash removal component and the grinding component, and then the bottom plate 12 is used to block the flash from splashing upward to avoid scratching the operator.

[0044] In addition, refer to Figure 1 and Figure 2As shown, the device for removing flash from friction stir welding further comprises: at least two slide rails 10, at least two slide rails 10 are arranged below the bottom plate 12, and at least two slide rails 10 are respectively arranged on both sides of the weld. In other words, the slide rails 10 are arranged below the housing 14, and the housing 14 and the cold plate can be separated by the slide rails 10, thereby providing installation space for the deburring assembly and the grinding assembly.

[0045] Furthermore, there are four slide rails 10, two of which are respectively arranged on both sides of the deburring component, and the other two slide rails 10 are respectively arranged on both sides of the grinding component.

[0046] The plane formed by the bottom of the slide rail 10 coincides with the plane of the tip of the blade 17, so that the outermost side of the blade 17 contacts the bottom of the flash. The slide rail 10 is made of steel. When the friction stir welding flash removal device is used, the bottom surface of the slide rail 10 contacts the surface of the cold plate. The edge and bottom of the slide rail 10 are smoothed so that it moves on the surface of the cold plate without scratching the surface of the cold plate.

[0047] Furthermore, a self-lubricating material may be used on the lower side of the slide rail 10 , so as to reduce the friction between the slide rail 10 and the cold plate when the slide rail 10 is placed on the cold plate.

[0048] In addition, refer to Figure 1 and Figure 2 As shown, a handle 1 is provided on the upper side of the housing 14. Thus, by providing the handle 1 on the upper side of the housing 14, the operator can directly take the stir friction welding flash removal device through the handle 1, which is convenient for the operator to remove the flash on both sides of the weld.

[0049] The operator holds the handle 1 on the shell 14, and when the power switch is turned on, the operator adjusts the rotation speed of the deburring assembly and the grinding assembly respectively through the speed regulator 4, aligns the deburring assembly and the grinding assembly with the flash at the weld position, places them above the cold plate, and adjusts the angle of the stir friction welding flash removal device in combination with the direction of the weld and the direction of the infrared light. The operator holds the handle and slowly pushes it forward to remove the welding flash on the pallet side beam and the front and rear cast beams. The direction needs to be carefully adjusted at the corners of the pallet, and the flash at the corner edges is slowly removed until the flash processing of the entire pallet cold plate surface is completed.

[0050] In this way, the stir friction welding flash removal device strictly controls the rotating knife speed and the rotation speed of the friction plate 20, and accurately controls the position of the knife 11 and the friction plate 20 by means of the slide rail 10 and advances along the weld. While completely removing the flash, it ensures that the edge of the weld is smooth and neat, which is conducive to further improving the consistency of the product.

[0051] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0052] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0053] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A device for removing flash from friction stir welding, characterized in that: include: case; A deburring assembly, wherein the deburring assembly is disposed below the shell, and the deburring assembly comprises: a first driving member and a tool, wherein the first driving member is fixed in the shell, the tool and the first driving member are transmission-connected, and the first driving member is configured to drive the tool to rotate so as to cut the burrs when the tool rotates.

2. The device for removing flash of friction stir welding according to claim 1, characterized in that: The tool comprises: a tool spindle and a tool body, wherein the tool body is connected to the tool spindle, and a blade is arranged on the edge of the tool body, wherein the maximum diameter of the blade is greater than the width of the weld.

3. The device for removing flash from friction stir welding according to claim 2, characterized in that: The curve of the tool body in the thickness direction is consistent with the curve of the weld.

4. The device for removing flash of friction stir welding according to claim 3, characterized in that: A protrusion is arranged on one side of the tool body away from the tool spindle.

5. The device for removing flash of friction stir welding according to claim 1, characterized in that: Also includes: A grinding assembly is arranged below the shell and behind the deburring assembly, and is used for grinding welds.

6. The device for removing flash of friction stir welding according to claim 5, characterized in that: The grinding assembly includes: a second driving member and a grinding member, the second driving member is fixed in the shell, the grinding member and the second driving member are transmission-connected, and the second driving member is configured to drive the grinding member to rotate so as to grind the weld when the grinding member rotates.

7. The device for removing flash of friction stir welding according to claim 6, characterized in that: The grinding member comprises: a base and a friction plate, the base is drivingly connected to the second driving member, the friction plate is detachably connected to the base, a grinding surface is arranged on the side of the friction plate facing away from the base, and the grinding surface is used for grinding the weld.

8. The device for removing flash of friction stir welding according to claim 7, characterized in that: A first clamping portion is disposed on the lower side of the base, and a second clamping portion is disposed on the upper side of the friction plate. The first clamping portion and the second clamping portion are clamped and matched.

9. The device for removing flash of friction stir welding according to claim 7, characterized in that: A slider or a groove is disposed on the lower side of the base, and the other slider or the groove is disposed on the upper side of the friction plate. The slider and the groove are limitedly matched.

10. The device for removing flash of friction stir welding according to claim 5, characterized in that: Also includes: A paddle is fixed below the shell and is disposed between the deburring assembly and the grinding assembly, and is used to push the cut burrs away from the weld.

11. The device for removing flash of friction stir welding according to claim 10, characterized in that: The paddle comprises a first portion and a second portion, one side of the first portion and one side of the second portion are connected to each other, and the other side of the first portion and the other side of the second portion are arranged outside the weld.

12. The device for removing flash of friction stir welding according to claim 5, characterized in that: Also includes: A battery is disposed in the housing, and the battery is electrically connected to the deburring assembly and the grinding assembly.

13. The device for removing flash of friction stir welding according to claim 1, characterized in that: Also includes: A bottom plate is fixedly connected to the shell and is arranged between the first driving member and the tool.

14. The device for removing flash of friction stir welding according to claim 13, characterized in that: Also includes: At least two slide rails are provided below the bottom plate, and at least two slide rails are provided on both sides of the weld respectively.

15. The device for removing flash of friction stir welding according to claim 1, characterized in that: A handle is arranged on the upper side of the housing.

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