Robot aluminum spot welding electrode cap grinding machine

Abstract

The utility model relates to a robot aluminum spot welding electrode cap grinding machine which is provided with a support, a scrap collecting cylinder is arranged in the middle of the support, an air suction motor is arranged in the scrap collecting cylinder, a buffering device is arranged on the portion, located above the scrap collecting cylinder, of the support, and a grinding device used for grinding an electrode cap is connected to the buffering device. A chip collecting device is arranged on the coping device, the chip collecting device is composed of an upper chip collecting shell and a lower chip collecting shell which are matched up and down, the upper chip collecting shell and the lower chip collecting shell are arranged on the coping device in a covering mode and used for the outer portion of the electrode cap coping portion, and a connector is arranged on the portion, close to one end, of the bottom of the lower chip collecting shell. And the joint is connected with the chip collecting cylinder through a chip collecting pipeline. According to the robot aluminum spot welding electrode cap grinding machine, the tool apron blade can rotate at an ultra-high speed, the grinding effect on the electrode cap, especially the electrode cap used in an aluminum welding occasion, is better, copper cuttings generated in the grinding process can be collected in time through the cuttings collecting device, cleaning is convenient, operation is convenient, and use is flexible.

Description

Technical Field

[0001] The utility model relates to an electrode cap grinding technology, in particular to a robot aluminum spot welding electrode cap grinding machine. Background Art

[0002] Aluminum alloy materials have been widely used in aerospace, shipbuilding, automobile and locomotive manufacturing due to their excellent corrosion resistance and high specific strength. However, the application of resistance spot welding in the production of aluminum alloy thin plate structural parts is far less widely used than in the production of low-carbon steel thin plate structural parts. Among them, the problem of electrode burning in aluminum alloy resistance spot welding is one of the main reasons that limit the promotion and application of this process.

[0003] The burning of the electrode shortens the service life of the electrode, and the electrode needs to be frequently repaired and replaced, which not only affects the production efficiency but also increases the production cost. The surface of the burned electrode is adhered with a layer of alloy structure, and the contact becomes unstable and the contact resistance increases during continuous welding, which affects the stability of the weld quality and causes spatter.

[0004] After the electrode is burned, the surface will become uneven, which will lead to defects such as deeper indentations on the weld surface and uneven weld surface. Many automobile manufacturers use the general grinding machine used for welding carbon steel for aluminum spot welding. Although it seems to be free of extra costs, this process is not suitable for grinding aluminum spot welded motor caps and has many disadvantages, such as:

[0005] The deep grinding depth results in a small number of times the electrode can be re-grinded; the low speed of ordinary grinding machines results in uneven grinding of the electrode head. The smoothness of the motor cap greatly affects the adhesion effect during welding; the grinding time is long. The single grinding time is about 20 to 30 seconds. For aluminum spot welding, for example, 40 points are ground once, and the grinding time for 1,000 welding points is about 625 seconds; the motor cap is seriously worn. Under the pressure of 125KG, the cutting amount per second is 0.1MM per second. The motor cap needs to be replaced after 7 to 9 grindings (that is, the electrode cap needs to be replaced after 320 points).

[0006] Since the electrode cap is a consumable, it is not easy to grind the electrode cap in aluminum welding. The copper chips generated during the grinding process are easy to splash around and difficult to clean. Various electrode cap grinding equipment has been created in the prior art, but in view of the special aluminum welding occasions, high-speed and sharp blades are required. Summary of the invention

[0007] The technical problem to be solved by the utility model is to provide a robot aluminum spot welding electrode cap grinder which can rotate a cutter seat blade at ultra-high speed and can automatically collect waste copper scraps after grinding.

[0008] In order to solve the above technical problems, the utility model is achieved through the following technical solutions:

[0009] A robot aluminum spot welding electrode cap grinder comprises a bracket, a chip collecting barrel fixedly connected to the bracket is provided in the middle portion thereof, a suction motor is provided in the chip collecting barrel, a buffer device fixedly connected to the bracket is provided in the portion above the chip collecting barrel, a grinding device for electrode cap grinding is connected to the buffer device, a chip collecting device is provided on the grinding device, the chip collecting device is composed of an upper chip collecting shell and a lower chip collecting shell matched up and down, the upper chip collecting shell and the lower chip collecting shell cover are arranged on the outside of the electrode cap grinding portion of the grinding device, a joint is provided at the portion of the bottom of the lower chip collecting shell near one end, the joint is connected to the chip collecting barrel through a chip collecting pipe.

[0010] Furthermore, the buffer device includes a mounting plate, which is fixedly connected to the bracket, and an upper positioning plate and a lower positioning plate corresponding to each other and parallel to each other are arranged on the front side near the upper and lower ends, and a vertically arranged elastic component is provided between the upper positioning plate and the lower positioning plate, and a mounting block that can move up and down is provided on the elastic component, the grinding device is fixedly connected to the mounting block near the rear end, and the upper chip collecting shell and the lower chip collecting shell are installed on the grinding device near the front end.

[0011] Furthermore, the elastic component consists of a positioning shaft, a sleeve and a spring; the positioning shaft is vertically arranged between the upper positioning plate and the lower positioning plate, the sleeve is sleeved on the outside of the positioning shaft and slides up and down, and the spring has two groups, and the two groups of springs are respectively sleeved on the outside of the positioning shaft between the sleeve and the upper positioning plate and between the sleeve and the lower positioning plate.

[0012] Furthermore, the elastic components have two groups, which are arranged in parallel on the left and right sides.

[0013] Furthermore, the grinding device includes a gear box, which is fixedly mounted on the mounting block by bolts, and a motor fixedly connected to the mounting block is provided at the bottom of the mounting block, and the end of the transmission shaft of the motor vertically passes through the mounting block upward and extends upward in the gear box; a motor gear fixedly connected to the end of the motor transmission shaft is provided in the gear box, a transition gear meshing with the motor gear is provided on the outer side of the motor gear, and a cutting gear meshing with the transition gear is provided on the outer side of the transition gear, and a circular cutting mechanism fixedly connected to the cutting mechanism is embedded in the center of the cutting gear, the cutting mechanism is close to the front end of the gear box, and its upper and lower ends pass through the upper and lower surfaces of the gear box, and the upper and lower end surfaces of the cutting mechanism are respectively flush with the upper and lower surfaces of the gear box; the upper chip collecting shell and the lower chip collecting shell cover are respectively covered on the upper and lower surfaces of the gear box corresponding to the upper and lower ends of the cutting mechanism; the upper chip collecting shell and the lower chip collecting shell are provided with grinding holes at the positions corresponding to the cutting mechanism, and a chip collecting cover is installed on the grinding hole, and the chip collecting cover is provided with an electrode cap jack that is connected up and down and corresponds to the upper and lower sides of the cutting mechanism.

[0014] Furthermore, the mounting block and the gear box are provided with shaft connection holes which correspond to each other up and down and are connected to each other, and the motor transmission shaft is passed through the shaft connection holes and is loosely matched with the shaft connection holes.

[0015] Furthermore, the motor gear, transition gear and cutting gear are movably connected to the gear box via bearings.

[0016] Furthermore, the cutting mechanism comprises a tool holder with a circular end face structure, a cutting hole communicating with each other up and down is arranged at the center of the end face of the tool holder, a cutting blade is installed on the wall of the cutting hole, and the cutting blade is a four-edged blade.

[0017] Furthermore, a chip collecting chamber is provided on the top of the lower chip collecting shell, and a chip collecting hole connected up and down is provided on one side of the bottom of the chip collecting chamber, and the joint is connected to the chip collecting hole; a lower blowing hole connected to the inside and outside of the chip collecting chamber is provided on the other end of the lower chip collecting shell away from the chip collecting hole, and an upper blowing hole connected to the bottom of the upper chip collecting shell is provided on the top, and the upper blowing hole and the lower blowing hole are connected to the solenoid valve connected to the air source through a pipeline, and the solenoid valve is fixedly installed on the grinding device.

[0018] Compared with the prior art, the utility model has the following advantages: the robot aluminum spot welding electrode cap grinder can rotate the tool holder blade at ultra-high speed, which has a better grinding effect on the electrode cap, especially the electrode cap used in aluminum welding occasions; the copper chips generated during the grinding process can be collected in time by the chip collection device, which is convenient for cleaning, easy to operate, and flexible to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is a three-dimensional structural schematic diagram of a robot aluminum spot welding electrode cap grinder of the utility model;

[0021] Figure 2 It is a schematic diagram of the three-dimensional structure of the buffer device in the utility model;

[0022] Figure 3 It is a schematic diagram of the structure of the elastic component in the utility model;

[0023] Figure 4 It is a schematic diagram of the three-dimensional structure of the grinding device in the utility model;

[0024] Figure 5 This is a schematic diagram of the internal structure of the gear box in the utility model;

[0025] Figure 6 This is a schematic diagram of the structure of the cutter mechanism in the utility model;

[0026] Figure 7 This is a schematic diagram of the structure of the chip collecting device in the utility model;

[0027] Figures 8 to 10 It is a schematic diagram of the structure of the lower chip collecting shell in the utility model.

[0028] In the figure: 1. bracket; 2. buffer device; 21. mounting plate; 211. upper positioning plate; 212. lower positioning plate; 22. elastic component; 221. positioning shaft; 222. bushing; 223. spring; 23. mounting block; 231. shaft connection hole; 3. grinding device; 31. gear box; 311. motor gear; 312. transition gear; 313. cutting gear; 314. cutter mechanism; 3141. tool holder; 3142. cutting hole; 3143. cutting blade; 32. motor; 4. chip collecting device; 41. upper chip collecting shell; 411. upper air blowing port; 42. lower chip collecting shell; 421. chip collecting chamber; 4211. chip collecting hole; 422. joint; 423. lower air blowing hole; 43. chip collecting cover; 431. electrode cap jack; 5. chip collecting barrel; 6. chip collecting pipeline; 7. solenoid valve. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the utility model provided in the accompanying drawings is not intended to limit the scope of the utility model claimed for protection, but only represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the utility model. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it is not necessary to further define and explain it in the subsequent drawings. In the description of the embodiments of the utility model, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship of the utility model product when used, it is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the utility model. Furthermore, the terms “first”, “second”, etc. are merely used for distinguishing descriptions and are not to be understood as indicating or implying relative importance.

[0031] In addition, the terms "horizontal" and "vertical" do not mean that the components must be absolutely horizontal or vertical, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure or component must be completely horizontal, but can be slightly tilted.

[0032] In the description of the embodiments of the present invention, "multiple" means at least 2.

[0033] In the description of the embodiments of the present utility model, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. Example

[0034] Please refer to the instruction manual Figure 1 As shown in the instruction manual, Figure 1 The utility model is shown as a robot aluminum spot welding electrode cap grinder for use in electrode cap grinding. The robot aluminum spot welding electrode cap grinder comprises a bracket 1, which is a columnar structure with an electric control box arranged on the side. A chip collecting barrel 5 fixedly connected to the bracket 1 is arranged in the middle part of the bracket 1. The chip collecting barrel 5 is fixed to the bracket 1 by a tie hoop. In order to make the chip collecting barrel 5 have a certain suction force, an air suction motor is arranged in the chip collecting barrel 5, and the air suction motor is electrically connected to the electric control box. A buffer device 2 fixedly connected to the bracket 1 is arranged at a position above the chip collecting barrel 5, and a grinding device 3 for electrode cap grinding is connected to the buffer device 2. See the attached manual for details. Figure 2 As shown, the buffer device 2 includes a mounting plate 21, which is vertically arranged and fixedly connected to the bracket 1 by bolts. An upper positioning plate 211 and a lower positioning plate 212 corresponding to each other and parallel to each other are arranged at the front of the mounting plate 21 near the upper and lower ends. The upper positioning plate 211 and the lower positioning plate 212 are symmetrical up and down, and form a "]"-shaped structure with the mounting plate 21. A vertically arranged elastic component 22 is provided between the upper positioning plate 211 and the lower positioning plate 212, and a mounting block 23 that can move up and down is provided on the elastic component 22. The grinding device 3 is fixedly connected to the mounting block 23 near the rear end; in order to ensure the upper and lower balance of the mounting block 23, the elastic component 22 has two groups, which are arranged in parallel on the left and right sides; refer to the attached manual Figure 3 As shown, the elastic component 22 is composed of a positioning shaft 221, a sleeve 222 and a spring 223; the positioning shaft 221 is vertically arranged between the upper positioning plate 211 and the lower positioning plate 212, and the upper and lower ends of the positioning shaft 221 are fixedly connected with the upper positioning plate 211 and the lower positioning plate 212 by bolts respectively, and the sleeve 222 is sleeved on the outside of the positioning shaft 221, and the length of the sleeve is less than the length of the positioning shaft 221. The sleeve 222 and the positioning shaft 221 are slidably matched up and down, and the sleeve 222 is embedded in the mounting block 23 near the rear end. The sleeve 222 is fixedly connected to the mounting block 23. The spring 223 on the positioning shaft 221 has two groups. The two groups of springs 223 are respectively sleeved on the positioning shaft 221 between the sleeve 222 and the upper positioning plate 211 and between the sleeve 222 and the lower positioning plate 212. The two groups of springs 223 on the positioning shaft 221 between the upper and lower mounting blocks 23 can ensure that the mounting blocks 23 have elastic buffering effects, reduce vibration, and avoid affecting the bracket 1; the grinding device 3 is fixedly installed on the mounting block 23 by bolts; refer to the attached manual Figure 4 and 5As shown, the grinding device 3 includes a gear box 31, and a position near the rear end of the gear box 31 is fixedly mounted on the top of the mounting block 23 by bolts. A motor 32 fixedly connected to the mounting block 23 is provided at the bottom of the mounting block 23, and the motor 32 is electrically connected to the electric control box. The end of the transmission shaft of the motor 32 vertically passes through the mounting block 23 and the bottom surface of the gear box 31 and extends upward in the gear box 31. In order to facilitate the insertion of the transmission shaft on the motor 32, the mounting block 23 and the gear box 31 are provided with shaft connection holes 231 corresponding to each other and connected to each other. The transmission shaft of the motor 32 is inserted in the shaft connection hole 231 and is clearance-matched with the shaft connection hole 231. When the motor 32 drives its transmission shaft to rotate, the transmission shaft is not interfered by the mounting block 23 and the gear box 31; a shaft connection hole 231 fixed to the end of the transmission shaft of the motor 32 is provided in the gear box 31 The motor gear 311 is connected to the gear box 31, and the motor gear 311 is arranged horizontally. The motor 32 can drive the motor gear 311 to rotate horizontally through its transmission shaft. The outer side of the motor gear 311 is provided with a transition gear 312 meshing with it. The transition gear 312 is arranged horizontally. When the motor gear 311 rotates, it can drive the transition gear 312 to rotate synchronously. The outer side of the transition gear 312 is provided with a cutting gear 313 meshing with it. The cutting gear 313 is arranged horizontally. When the transition gear 312 rotates, it can drive the cutting gear 313 meshing with it to rotate synchronously. In order to ensure that the motor gear 311, the transition gear 312 and the cutting gear 313 can rotate flexibly horizontally in the gear box 31, the motor gear 311, the transition gear 312 and the cutting gear 313 are all movably connected to the gear box 31 through bearings; refer to the attached manual Figure 5 As shown, the center of the cutting gear 313 is embedded with a circular cutting mechanism 314 fixedly connected thereto, and the cutting mechanism 314 is used to grind the electrode cap. For details, see the appendix of the specification. Figure 6 As shown, the cutting mechanism 314 includes a tool holder 3141 with a circular end face structure, and the tool holder 3141 is fixedly embedded in the center hole of the cutting gear 313, and can rotate synchronously with the cutting gear 313; a cutting hole 3142 connected to the upper and lower sides is arranged in the center of the end face of the tool holder 3141, and a cutting blade 3143 is installed on the wall of the cutting hole 3142. The cutting blade 3143 has multiple groups, which are arranged in a circular array along the axis of the cutting hole 3142, thereby improving the cutting efficiency of the outer side of the electrode cap. The cutting blade 3143 is a four-edged blade, which can effectively ensure the grinding effect of the outer side of the electrode cap; the cutting mechanism 314 is close to the front end of the gear box 31, and its upper and lower ends penetrate the upper and lower surfaces of the gear box 31, and the upper and lower end faces of the cutting mechanism 314 are respectively flush with the upper and lower surfaces of the gear box 31; refer to the attached manual Figure 1 As shown, the grinding device 3 is provided with a chip collecting device 4, see the attached manual Figure 7As shown, the chip collecting device 4 is composed of an upper chip collecting shell 41 and a lower chip collecting shell 42 that match each other. The upper chip collecting shell 41 and the lower chip collecting shell 42 are connected together by bolts. The upper chip collecting shell 41 and the lower chip collecting shell 42 are installed on the grinding device 3 near the front end. Furthermore, the upper chip collecting shell 41 and the lower chip collecting shell 42 are arranged on the grinding device 3 to cover the outside of the electrode cap grinding part, that is, the outside of the upper and lower ends of the cutter mechanism 314 on the gear box 31. Specifically, the upper chip collecting shell 41 and the lower chip collecting shell 42 cover the parts of the gear box 31 on the upper and lower surfaces corresponding to the upper and lower ends of the cutter mechanism 314 respectively; in order to facilitate the grinding of the electrode cap through the cutter mechanism 314, refer to the attached manual Figures 7 to 10As shown, the upper chip collecting shell 41 and the lower chip collecting shell 42 are provided with grinding holes at positions corresponding to the cutter mechanism 314, and the grinding holes are provided with chip collecting covers 43, which are fixedly connected to the corresponding upper chip collecting shell 41 and the lower chip collecting shell 42. In order to facilitate the grinding of the electrode cap, the chip collecting cover 43 is provided with an electrode cap plug hole 431 which is connected up and down and corresponds to the cutter mechanism 314 up and down. The electrode cap can be plugged into the electrode cap plug hole 431 and can extend between the cutting blades 3143 in the center of the cutter mechanism 314. In order to ensure that the copper chips after the electrode cap is ground can be collected for easy sorting, the top of the lower chip collecting shell 42 is provided with a A chip collecting chamber 421 is provided, and copper chips generated when the electrode cap is being ground can fall into the chip collecting chamber 421; in order to facilitate the timely absorption and cleaning of the copper chips in the chip collecting chamber 421, a chip collecting hole 4211 connected up and down is provided on one side of the bottom of the chip collecting chamber 421, and a joint 422 is provided at the bottom of the lower chip collecting shell 42 near one end, and the joint 422 is connected to the chip collecting hole 4211, and the joint 422 is connected to the chip collecting barrel 5 through the chip collecting pipe 6. The suction motor provided in the chip collecting barrel 5 generates suction to suck the copper chips falling in the chip collecting chamber 421 into the chip collecting barrel 5 through the chip collecting pipe 6 and the joint, so as to facilitate centralized cleaning. In order to blow off the copper chips adhering to the cutting blade 3143, the tool holder 3141 and the chip collecting chamber 421, and to facilitate the copper chips to be sucked into the chip collecting barrel 5, the other end of the lower chip collecting shell 42 away from the chip collecting hole 4211 is provided with a lower blowing hole 423 connected with the inside and outside of the chip collecting chamber 421, and the lower blowing hole 423 is used to blow the copper chips at the bottom of the cutter mechanism 314 and the chip collecting barrel 5 toward the electrode cap insertion hole 431, and the top of the upper chip collecting shell 41 is provided with an upper blowing hole 411 connected with the bottom thereof. The upper air blowing hole 411 is used for blowing copper chips on the top of the cutter mechanism 314 and the cutting hole 3142 and the cutting blade 3143 into the chip collecting chamber 421. In order to realize the air blowing of the upper air blowing hole 411 and the lower air blowing hole 423, the upper air blowing hole 411 and the lower air blowing hole 423 are connected to the solenoid valve 7 connected to the air source through a pipeline. The solenoid valve 7 is fixedly installed on the grinding device 3, specifically, it is fixedly installed on the side of the mounting block 23 by screws, and the solenoid valve is electrically connected to the electric control box.

[0035] When in use, start the motor 32, the motor 32 drives the motor gear 311 to rotate through its transmission shaft, the motor gear 311 drives the transition gear 312 to rotate, and then drives the cutting gear 313 to rotate through the transition gear 312. The vibration generated by the rotation of the motor 32 is slowly released by the elastic component 22, which can avoid the resonance of the bracket. The upper and lower corresponding electrode caps on the spot welding gun are respectively inserted into the electrode cap plug holes 431 of the corresponding chip collection cover 43 on the upper chip collection shell 41 and the lower chip collection shell 42, and the electrode caps are inserted into the cutting mechanism In the bevel cutting blade 3143 of 314, the cutting gear 313 rotates to drive the cutting mechanism 314 to rotate, and the cutting mechanism 314 quickly grinds the outside of the electrode cap inserted into it. The copper chips generated during the grinding process partially fall into the chip collecting chamber 421 and are sucked into the chip collecting barrel 5 through the chip collecting hole 4211. The copper chips adhered to the cutting blade 3143 and the cutting hole 3142 are blown into the chip collecting chamber 421 through the upper air port 411 and blown into the chip collecting hole 4211 through the lower air hole, so as to be collected by the chip collecting barrel 5.

[0036] This robot aluminum spot welding electrode cap grinder can rotate the tool holder blade at ultra-high speed, and has a better grinding effect on the electrode cap, especially the electrode cap used in aluminum welding occasions. The copper chips generated during the grinding process can be collected in time by the chip collection device 4, which is convenient for cleaning, easy to operate, and flexible to use.

[0037] It should be emphasized that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A robot aluminum spot welding electrode cap grinder, characterized by: A support (1) is provided, wherein a chip collecting barrel (5) fixedly connected to the support (1) is provided at the middle portion of the support (1), an air suction motor is provided in the chip collecting barrel (5), a buffer device (2) fixedly connected to the support (1) is provided at a portion above the chip collecting barrel (5), a grinding device (3) for electrode cap grinding is connected to the buffer device (2), a chip collecting device (4) is provided on the grinding device (3), the chip collecting device (4) is composed of an upper chip collecting shell (41) and a lower chip collecting shell (42) matched with each other, the upper chip collecting shell (41) and the lower chip collecting shell (42) are provided on the outside of the electrode cap grinding portion of the grinding device (3), a joint (422) is provided at a portion near one end of the bottom of the lower chip collecting shell (42), and the joint (422) is connected to the chip collecting barrel (5) through a chip collecting pipe (6).

2. A robot aluminum spot welding electrode cap grinder according to claim 1, characterized in that: The buffer device (2) comprises a mounting plate (21), the mounting plate (21) being fixedly connected to the bracket (1), and having upper and lower positions near the upper and lower ends thereof, an upper positioning plate (211) and a lower positioning plate (212) corresponding to each other and parallel to each other, a vertically arranged elastic component (22) being provided between the upper positioning plate (211) and the lower positioning plate (212), a mounting block (23) being movable up and down being provided on the elastic component (22), a position of the grinding device (3) near the rear end being fixedly connected to the mounting block (23), and the upper chip collecting shell (41) and the lower chip collecting shell (42) being installed on the grinding device (3) near the front end.

3. A robot aluminum spot welding electrode cap grinder according to claim 2, characterized in that: The elastic component (22) is composed of a positioning shaft (221), a shaft sleeve (222) and a spring (223); the positioning shaft (221) is vertically arranged between the upper positioning plate (211) and the lower positioning plate (212); the shaft sleeve (222) is sleeved on the outside of the positioning shaft (221) and slides up and down; the spring (223) has two groups, and the two groups of springs (223) are respectively sleeved on the outside of the positioning shaft (221) between the shaft sleeve (222) and the upper positioning plate (211) and between the shaft sleeve (222) and the lower positioning plate (212).

4. A robot aluminum spot welding electrode cap grinder according to claim 2, characterized in that: The elastic components (22) have two groups, which are arranged in parallel on the left and right sides.

5. The robot aluminum spot welding electrode cap grinder according to claim 2, characterized in that: The grinding device (3) comprises a gear box (31), the gear box (31) being fixedly mounted on the mounting block (23) by means of bolts, a motor (32) being fixedly connected to the mounting block (23) being arranged at the bottom of the mounting block (23), the end of a transmission shaft of the motor (32) vertically passing through the mounting block (23) and extending upward into the gear box (31); a motor gear (311) being fixedly connected to the end of the transmission shaft of the motor (32) being arranged in the gear box (31), a transition gear (312) being meshed with the motor gear (311) being arranged on the outer side of the motor gear (311), a cutting gear (313) being meshed with the transition gear (312) being arranged on the outer side of the transition gear (312), and a circular gear (313) being fixedly connected to the cutting gear (313) being embedded in the center of the cutting gear (313). The invention relates to a shaped cutter mechanism (314), wherein the cutter mechanism (314) is close to the front end of the gear box (31), and its upper and lower ends penetrate the upper and lower surfaces of the gear box (31), and the upper and lower end surfaces of the cutter mechanism (314) are respectively flush with the upper and lower surfaces of the gear box (31); the upper chip collecting shell (41) and the lower chip collecting shell (42) are covered on the upper and lower surfaces of the gear box (31) and correspond to the upper and lower ends of the cutter mechanism (314); the upper chip collecting shell (41) and the lower chip collecting shell (42) are provided with grinding holes at positions corresponding to the cutter mechanism (314), and a chip collecting cover (43) is installed on the grinding hole, and the chip collecting cover (43) is provided with an electrode cap insertion hole (431) which is connected to each other from top to bottom and corresponds to the upper and lower ends of the cutter mechanism (314).

6. A robot aluminum spot welding electrode cap grinder according to claim 5, characterized in that: The mounting block (23) and the gear box (31) are provided with shaft connection holes (231) which correspond to each other and are connected to each other. The transmission shaft of the motor (32) is inserted into the shaft connection hole (231) and is clearance-matched with the shaft connection hole (231).

7. The robot aluminum spot welding electrode cap grinder according to claim 5, characterized in that: The motor gear (311), the transition gear (312) and the cutting gear (313) are all movably connected to the gear box (31) via bearings.

8. The robot aluminum spot welding electrode cap grinder according to claim 5, characterized in that: The cutting mechanism (314) comprises a tool holder (3141) having a circular end surface structure, a cutting hole (3142) communicating with each other from top to bottom is arranged at the center of the end surface of the tool holder (3141), a cutting blade (3143) is mounted on the wall surface of the cutting hole (3142), and the cutting blade (3143) is a four-edged blade.

9. The robot aluminum spot welding electrode cap grinder according to claim 1, characterized in that: The top of the lower chip collecting shell (42) is provided with a chip collecting chamber (421), and one side of the bottom of the chip collecting chamber (421) is provided with a chip collecting hole (4211) that is connected up and down, and the joint (422) is connected to the chip collecting hole (4211); the other end of the lower chip collecting shell (42) away from the chip collecting hole (4211) is provided with a lower blowing hole (423) that is connected to the inside and outside of the chip collecting chamber (421), and the top of the upper chip collecting shell (41) is provided with an upper blowing hole (411) that is connected up and down with the bottom thereof, and the upper blowing hole (411) and the lower blowing hole (423) are both connected to a solenoid valve (7) connected to an air source through a pipeline, and the solenoid valve (7) is fixedly mounted on the grinding device (3).

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