A visually guided welding device for machine tool guide rail protective cover

Abstract

The present invention belongs to the technical field of welding devices, and discloses a vision-guided welding device for a machine tool guide rail protective cover, comprising a Y-axis base assembly, a vision system assembly, a mobile welding assembly, and a plate chain conveyor line installed above the Y-axis base assembly, wherein the plate chain conveyor line comprises a feed end and a discharge end, and the plate chain conveyor line is used to drive the machine tool guide rail protective cover to move from the feed end to the discharge end, and the discharge end is installed with a conveyor line baffle. The present invention can automatically weld the machine tool guide rail protective cover by cooperating with the Y-axis base assembly, the vision system assembly, the mobile welding assembly, and the plate chain conveyor line, overcoming the problems of high manual labor intensity and poor welding quality consistency in the prior art, so as to realize the function of automatic welding after manual loading, thereby achieving the effect of reducing manual labor intensity, greatly reducing the difficulty of welding, greatly reducing the difficulty of workers' work, improving workers' work efficiency, and improving the welding quality of machine tool guide rail protective covers.

Description

Technical Field

[0001] The invention belongs to the technical field of welding devices, and in particular relates to a vision-guided welding device for a machine tool guide rail protective cover. Background Art

[0002] Welding, also known as fusion, is a manufacturing process and technology that uses heating, high temperature or high pressure to join metals or other thermoplastic materials such as plastics. There are many sources of energy for modern welding, including gas flame, arc, laser, electron beam, friction and ultrasonic waves. In addition to being used in factories, welding can also be performed in a variety of environments, such as outdoors, underwater and in space. Welding can be dangerous to operators no matter where it is, so appropriate protective measures must be taken when welding. Possible injuries to the human body caused by welding include burns, electric shock, vision damage, inhalation of toxic gases, excessive ultraviolet radiation, etc. Machine tool guide rail protective covers can protect the machine tool's guide rails, screws, etc. from external corrosion and damage. Machine tool guide rail protective covers are required when they are used.

[0003] Among them, the welding of steel plate guide rail protective cover is generally done manually, which is restricted by many factors such as workers' proficiency and work pressure. The welding is extremely difficult, which greatly increases the difficulty of workers' work, reduces workers' work efficiency, and it is difficult to improve the welding quality. Summary of the Invention

[0004] The object of the present invention is to provide a vision-guided welding device for a machine tool guide rail protective cover, so as to solve the problems of great welding difficulty and low welding efficiency raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a vision-guided welding device for a machine tool guide rail protective cover, comprising a Y-axis base assembly, a vision system assembly, a mobile welding assembly, and a plate chain conveyor line installed above the Y-axis base assembly;

[0006] The plate chain conveyor line includes a feed end and a discharge end. The plate chain conveyor line is used to drive the machine tool guide rail protective cover to move from the feed end to the discharge end. The discharge end is equipped with a conveyor line baffle.

[0007] The mobile welding assembly is installed on the Y-axis base assembly, and the mobile welding assembly is located above the plate chain conveyor line. The Y-axis base assembly is used to drive the mobile welding assembly to move back and forth relative to the Y-axis base assembly. The vision system assembly is installed on the mobile welding assembly. When the machine tool guide rail guard cover moves below the vision system assembly, the plate chain conveyor line stops working, and the mobile welding assembly welds the machine tool guide rail guard cover. After the mobile welding assembly welds the machine tool guide rail guard cover, the plate chain conveyor line drives the welded machine tool guide rail guard cover to move to the discharge end.

[0008] Preferably, the Y-axis base assembly includes a base, a foot cup is installed at the bottom of the base, and a caster is rotatably connected to one side of the bottom of the base close to the foot cup, and fixed feet are installed on both symmetrical sides of the base.

[0009] Preferably, three first linear slide rails are installed on the top of the base, wherein a first mounting plate is slidably connected to one of the first linear slide rails, and a second mounting plate is slidably connected between the other two first linear slide rails.

[0010] Preferably, a rack is installed on the top of the base near the bottom of the second mounting plate, a first servo motor is installed on one side of the second mounting plate, a reducer is installed at the output end of the first servo motor, a gear is installed at the output end of the reducer, and the gear is meshed with the rack.

[0011] Preferably, a first drag chain groove is installed on the side of the base adjacent to the fixed foot, a first drag chain is installed on the top of the first drag chain groove, a first drag chain bracket is installed on the side of the second mounting plate close to the first drag chain, and a limiting block is installed between the rack and one of the first linear slide rails.

[0012] Preferably, the mobile welding assembly includes an integral bracket, an integral mounting block is installed at the bottom of the integral bracket, the integral mounting block is fixedly connected to the top of the first mounting plate and the second mounting plate, three third linear slide rails are installed on one side of the integral bracket, the three third linear slide rails are slidably connected with slider pads, an X-axis fixed plate is installed between the three slider pads, two second linear slide rails are installed on one side of the X-axis fixed plate, a welding head mounting plate is rotatably connected between the two second linear slide rails, a welding head mounting plate is installed on the side of the welding head mounting plate opposite to the X-axis fixed plate, a swing welding head is installed on the welding head fixing plate, a fixed plate positioning block is installed on the welding head mounting plate near the top of the welding head fixing plate, and a dust removal bracket is installed on the side of the welding head fixing plate near the swing welding head.

[0013] Preferably, a second motor mounting plate is installed on the side of the X-axis fixed plate close to the second linear slide rail, a third servo motor is installed on the second motor mounting plate, a second coupling is installed on the output end of the third servo motor, one end of the second coupling is connected to the X-axis screw, a first screw seat is installed on the side of the X-axis fixed plate close to the X-axis screw, the X-axis screw passes through the welding head mounting plate, and a second drag chain bracket is installed on the side of the X-axis fixed plate close to the second motor mounting plate.

[0014] Preferably, a wire trough is installed on the top of the integral bracket, an optical fiber bracket is installed on one side of the top of the integral bracket near the wire trough, and a first motor mounting plate is installed on the other side, a second servo motor is installed on the first motor mounting plate, and a first coupling is installed on the output end of the second servo motor, a second screw rod seat is installed on the integral bracket near the bottom of the first coupling, a Z-axis screw rod is installed on one end of the first coupling, and the Z-axis screw rod passes through the second screw rod seat and the X-axis fixed plate, and a reinforcing rib is installed on the side of the bottom of the first motor mounting plate near the first coupling, a second drag chain groove is installed on the side of the integral bracket adjacent to the third linear slide rail, a second drag chain is installed on one side of the second drag chain groove, a slot-type photoelectric sensor is installed on the top of the X-axis fixed plate, a photoelectric sensing sheet is installed on the top of the welding head mounting plate, two photoelectric brackets are installed on the integral bracket near the bottom of the welding head mounting plate, a product in place bracket is installed on the photoelectric bracket, a limit slot photoelectric sensor is installed on the side of the integral bracket opposite to the second drag chain groove, and a third guide shaft support is installed on the third linear slide rail near the bottom of the Z-axis screw rod.

[0015] Preferably, the vision system component includes a vision system mounting plate, which is fixed to the side of the X-axis fixing plate opposite to the second motor mounting plate, and a first guide shaft support and a second guide shaft support are installed on one side of the vision system mounting plate, the second guide shaft support is located below the first guide shaft support, and a camera fixing shaft is installed at one end of the second guide shaft support, a fixing rod is installed at one end of the second guide shaft support, a fixing block is sleeved on the camera fixing shaft, a camera adjustment plate is installed on one side of the fixing block, a camera fixing plate is installed on one side of the camera adjustment plate, and a camera is installed on the camera fixing plate.

[0016] Preferably, a fixing rod bracket is installed on the fixing rod, a light source fixing bracket is installed at the bottom of the fixing rod bracket, and a light source is installed on the light source fixing bracket.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The present invention can automatically weld the guide rail protective cover of the machine tool through the cooperation of the Y-axis base assembly, the visual system assembly, the mobile welding assembly and the plate chain conveyor line, overcoming the problems of high manual labor intensity and poor welding quality consistency in the prior art, and realizing the function of automatic welding after manual loading, thereby achieving the effect of reducing the intensity of manual labor, greatly reducing the difficulty of welding, greatly reducing the work difficulty of workers, improving the work efficiency of workers, and improving the welding quality of the guide rail protective cover of the machine tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention;

[0020] Figure 2 Schematic diagram of the structure of the visual system components of the present invention;

[0021] Figure 3 It is a structural schematic diagram of the mobile welding assembly of the present invention;

[0022] Figure 4 Schematic diagram of the structure of the Y-axis base assembly of the present invention;

[0023] In the figure: 1. Y-axis base assembly; 11. Fixed foot; 12. Gear; 13. Rack; 14. Stop block; 15. Base; 16. First linear guide rail; 17. First mounting plate; 18. Caster; 19. Second mounting plate; 111. First drag chain bracket; 112. First servo motor; 113. Reducer; 114. First drag chain; 115. First drag chain slot; 116. Foot cup; 2. Vision system assembly; 21. First guide 1. Shaft support; 22. Camera fixing shaft; 23. Fixed block; 24. Camera adjustment plate; 25. Camera fixing plate; 26. Camera; 27. Vision system mounting plate; 28. Fixed rod; 29. ​​Second guide shaft support; 211. Fixed rod bracket; 212. Light source fixing bracket; 213. Light source; 3. Mobile welding assembly; 31. Wire trough; 32. Integral bracket; 33. Limit slot photoelectric sensor; 34. Slot-type photoelectric sensor; 35. Second linear guide rail; 36. First screw rod seat; 37. X-axis screw rod; 38. Photoelectric sensor sheet; 39. Welding head mounting plate; 311. Photoelectric bracket; 312. Product in place bracket; 313. Swing welding head; 314. Fixed plate positioning block; 315. Welding head fixing plate; 316. Dust removal bracket; 317. Fiber optic bracket; 318. Second servo motor; 319. First motor mounting plate; 320. Reinforcement rib; 321. First coupling 322, second screw seat; 323, second drag chain slot; 324, second drag chain; 325, Z-axis screw; 326, third linear guide rail; 327, slider pad; 328, X-axis fixing plate; 329, second motor mounting plate; 330, second drag chain bracket; 331, third servo motor; 332, second coupling; 333, integral mounting block; 334, third guide shaft support; 4, plate chain conveyor line; 5, conveyor line baffle. DETAILED DESCRIPTION

[0024] Next, embodiments of the present invention will be described.

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] See also Figure 1-Figure 4 As shown, the present invention provides the following technical solutions:

[0027] A vision-guided welding device for a machine tool guide rail protective cover includes a Y-axis base assembly 1, a vision system assembly 2, a mobile welding assembly 3, and a plate chain conveyor line 4 installed above the Y-axis base assembly 1;

[0028] The plate chain conveyor line 4 includes a feed end and a discharge end. The plate chain conveyor line 4 is used to drive the machine tool guide rail protective cover to move from the feed end to the discharge end. The discharge end is equipped with a conveyor line baffle 5;

[0029] The mobile welding assembly 3 is installed on the Y-axis base assembly 1, and the mobile welding assembly 3 is located above the plate chain conveyor line 4. The Y-axis base assembly 1 is used to drive the mobile welding assembly 3 to move back and forth relative to the Y-axis base assembly 1. The vision system assembly 2 is installed on the mobile welding assembly 3. When the machine tool guide rail protective cover moves to the bottom of the vision system assembly 2, the plate chain conveyor line 4 stops working, and the mobile welding assembly 3 welds the machine tool guide rail protective cover. After the mobile welding assembly 3 welds the machine tool guide rail protective cover, the plate chain conveyor line 4 drives the welded machine tool guide rail protective cover to the discharge end.

[0030] Example 2:

[0031] The Y-axis base assembly 1 includes a base 15, a foot cup 116 is installed at the bottom of the base 15, and a caster 18 is rotatably connected to one side of the bottom of the base 15 close to the foot cup 116, and fixed feet 11 are installed on both symmetrical sides of the base 15;

[0032] Three first linear guide rails 16 are mounted on the top of the base 15 , wherein a first mounting plate 17 is slidably connected to one of the first linear guide rails 16 , and a second mounting plate 19 is slidably connected between the other two first linear guide rails 16 ;

[0033] A rack 13 is mounted on the top of the base 15, near the bottom of the second mounting plate 19. A first servo motor 112 is mounted on one side of the second mounting plate 19. A reducer 113 is mounted on the output end of the first servo motor 112. A gear 12 is mounted on the output end of the reducer 113. The gear 12 is meshed with the rack 13.

[0034] A first drag chain slot 115 is installed on one side of the base 15 adjacent to the fixed foot 11. A first drag chain 114 is installed on the top of the first drag chain slot 115. A first drag chain bracket 111 is installed on the side of the second mounting plate 19 close to the first drag chain 114. A limit block 14 is installed between the rack 13 and one of the first linear guide rails 16.

[0035] The mobile welding assembly 3 includes an integral bracket 32, an integral mounting block 333 is installed at the bottom of the integral bracket 32, and the integral mounting block 333 is fixedly connected to the top of the first mounting plate 17 and the second mounting plate 19, three third linear slide rails 326 are installed on one side of the integral bracket 32, and slider pads 327 are slidably connected to the three third linear slide rails 326, an X-axis fixed plate 328 is installed between the three slider pads 327, two second linear slide rails 35 are installed on one side of the X-axis fixed plate 328, and a welding head mounting plate 39 is rotatably connected between the two second linear slide rails 35, a welding head mounting plate 39 is installed on the side of the welding head mounting plate 39 opposite to the X-axis fixed plate 328, a swing welding head 313 is installed on the welding head fixing plate 315, a fixed plate positioning block 314 is installed on the welding head mounting plate 39 near the top of the welding head fixing plate 315, and a dust removal bracket 316 is installed on the side of the welding head fixing plate 315 near the swing welding head 313;

[0036] A second motor mounting plate 329 is mounted on the side of the X-axis fixing plate 328 close to the second linear guide rail 35. A third servo motor 331 is mounted on the second motor mounting plate 329. A second coupling 332 is mounted on the output end of the third servo motor 331. One end of the second coupling 332 is connected to the X-axis screw rod 37. A first screw rod seat 36 is mounted on the side of the X-axis fixing plate 328 close to the X-axis screw rod 37. The X-axis screw rod 37 passes through the welding head mounting plate 39. A second drag chain bracket 330 is mounted on the side of the X-axis fixing plate 328 close to the second motor mounting plate 329.

[0037] A wire groove 31 is installed on the top of the integral bracket 32, an optical fiber bracket 317 is installed on one side of the top of the integral bracket 32 ​​near the wire groove 31, and a first motor mounting plate 319 is installed on the other side. A second servo motor 318 is installed on the first motor mounting plate 319, and a first coupling 321 is installed on the output end of the second servo motor 318. A second screw rod seat 322 is installed below the integral bracket 32 ​​near the first coupling 321, and a Z-axis screw rod 325 is installed at one end of the first coupling 321. The Z-axis screw rod 325 passes through the second screw rod seat 322 and the X-axis fixing plate 328. A reinforcing rib 32 is installed on the side of the bottom of the first motor mounting plate 319 near the first coupling 321. 0, a second drag chain slot 323 is installed on one side of the integral bracket 32 ​​adjacent to the third linear guide rail 326, a second drag chain 324 is installed on one side of the second drag chain slot 323, a slot-type photoelectric sensor 34 is installed on the top of the X-axis fixing plate 328, a photoelectric sensor sheet 38 is installed on the top of the welding head mounting plate 39, two photoelectric brackets 311 are installed below the integral bracket 32 ​​near the welding head mounting plate 39, a product in-position bracket 312 is installed on the photoelectric bracket 311, a limit slot photoelectric sensor 33 is installed on the side of the integral bracket 32 ​​opposite to the second drag chain slot 323, and a third guide shaft support 334 is installed below the third linear guide rail 326 near the Z-axis screw rod 325;

[0038] The vision system assembly 2 includes a vision system mounting plate 27, which is fixed to the side of the X-axis fixing plate 328 opposite to the second motor mounting plate 329. A first guide shaft support 21 and a second guide shaft support 29 are installed on one side of the vision system mounting plate 27. The second guide shaft support 29 is located below the first guide shaft support 21, and a camera fixing shaft 22 is installed at one end of the second guide shaft support 29. A fixing rod 28 is installed at one end of the second guide shaft support 29. A fixing block 23 is sleeved on the camera fixing shaft 22. A camera adjustment plate 24 is installed on one side of the fixing block 23. A camera fixing plate 25 is installed on one side of the camera adjustment plate 24. A camera 26 is installed on the camera fixing plate 25. A touch screen controller is installed on the plate chain conveyor line 4.

[0039] A fixing rod bracket 211 is installed on the fixing rod 28, and a light source fixing bracket 212 is installed at the bottom of the fixing rod bracket 211. A light source 213 is installed on the light source fixing bracket 212. The device is moved to the use point through the casters 18, and the base 15 is supported by the foot cup 116. The base 15 is fixed by fixing the foot 11 and the bolts. After the base 15 is fixed, the welding mark is reserved for the machine tool guide rail protective cover that needs to be welded. The reservation method can be laser marking or laser cutting. The height of the machine tool guide rail protective cover that needs to be welded is manually measured, and the measurement data is input into the touch screen controller. The assembled machine tool guide rail protective cover is manually placed on the plate chain conveyor line 4, and then the welding mark is fixed. The plate chain conveyor line 4 drives the machine tool guide rail protective cover to move. When the photoelectric bracket 311 and the induction switch on the product arrival bracket 312 sense the product, the plate chain conveyor line 4 stops. The touch screen controller controls the second servo motor 318 to drive the Z-axis screw rod 325 to rotate according to the protective cover height manually input on the touch screen, so that the X-axis fixed plate 328 slides on the third linear slide rail 326, so that the visual system mounting plate 27 moves down and the camera 26 drops to the specified position. After the camera 26 reaches the specified position, it immediately takes the first photo and transmits the photo to the touch screen controller. The touch screen controller recognizes the welding mark in the photo, calculates the coordinates of the welding mark, and presses The designated rules are sent to the third servo motor 331 and the first servo motor 112. The shooting is based on the size of the camera shooting picture. The logo in the picture can be one or more. After the third servo motor 331 and the first servo motor 112 receive the command, the third servo motor 331 drives the second coupling 332 to rotate, thereby rotating the X-axis screw rod 37, causing the welding head mounting plate 39 to slide on the second linear slide 35, and causing the swing welding head 313 to move in the X axis. The first servo motor 112 drives the reducer 113 to rotate, thereby driving the gear 12 to rotate, and the rack 13 cooperates to make the first mounting plate 17 and the second mounting plate 19 on the first linear slide 16. Slide, drive the whole bracket 32 ​​to move along the Y axis through the first mounting plate 17 and the second mounting plate 19, make the swing welding head 313 move along the Y axis, reach the end point required for welding, and then turn off the laser to complete the welding of the welding mark captured for the first time. After that, control the swing welding head 313 to move along the Y axis and X axis coordinates along the direction of entry of the welding workpiece, and then take a second photo and identify, identify the new welding mark, manually re-measure the height of the machine tool guide rail protective cover to be welded, input the measurement data into the touch screen controller, and weld again according to the above steps. When the camera 26 fails to capture the feature point twice, it is considered that the welding of the current product is completed. The X, Y and Z axes return to the origin, the plate chain conveyor line 4 moves forward, moves the current product to the unloading position, the plate chain conveyor line 4 stops, and the welded protective cover is manually removed at the unloading position.

[0040] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0041] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A visually guided welding method for a machine tool guide rail protective cover, characterized in that: A machine tool guide rail protective cover vision-guided welding device is used, and the device includes: A Y-axis base assembly (1), a vision system assembly (2), a mobile welding assembly (3), and a plate chain conveyor line (4) installed above the Y-axis base assembly (1); The plate chain conveyor line (4) includes a feed end and a discharge end, and the plate chain conveyor line (4) is used to drive the machine tool guide rail protective cover to move from the feed end to the discharge end, and the discharge end is equipped with a conveyor line baffle (5); The movable welding assembly (3) is mounted on the Y-axis base assembly (1), and the movable welding assembly (3) is located above the plate chain conveyor line (4). The Y-axis base assembly (1) is used to drive the movable welding assembly (3) to move back and forth relative to the Y-axis base assembly (1). The visual system assembly (2) is mounted on the movable welding assembly (3). When the machine tool guide rail protective cover moves to the bottom of the visual system assembly (2), the plate chain conveyor line (4) stops working, and the movable welding assembly (3) welds the machine tool guide rail protective cover. After the movable welding assembly (3) welds the machine tool guide rail protective cover, the plate chain conveyor line (4) drives the welded machine tool guide rail protective cover to move to the discharge end. The Y-axis base assembly (1) comprises a base (15), and three first linear slide rails (16) are mounted on the top of the base (15), wherein a first mounting plate (17) is slidably connected to one of the first linear slide rails (16), and a second mounting plate (19) is slidably connected between the other two first linear slide rails (16); A rack (13) is installed on the top of the base (15) near the bottom of the second mounting plate (19), a first servo motor (112) is installed on one side of the second mounting plate (19), a reducer (113) is installed at the output end of the first servo motor (112), a gear (12) is installed at the output end of the reducer (113), and the gear (12) is meshed with the rack (13); The movable welding assembly (3) comprises an integral bracket (32), three third linear slide rails (326) are installed on one side of the integral bracket (32), slider pads (327) are slidably connected to the three third linear slide rails (326), an X-axis fixed plate (328) is installed between the three slider pads (327), two second linear slide rails (35) are installed on one side of the X-axis fixed plate (328), and a welding head mounting plate (39) is slidably connected between the two second linear slide rails (35); A second motor mounting plate (329) is mounted on one side of the X-axis fixing plate (328) close to the second linear slide rail (35); a third servo motor (331) is mounted on the second motor mounting plate (329); a second coupling (332) is mounted on the output end of the third servo motor (331); one end of the second coupling (332) is connected to an X-axis screw rod (37); the X-axis screw rod (37) passes through the welding head mounting plate (39); A wire trough (31) is installed on the top of the integral bracket (32), an optical fiber bracket (317) is installed on one side of the top of the integral bracket (32) close to the wire trough (31), and a first motor mounting plate (319) is installed on the other side, a second servo motor (318) is installed on the first motor mounting plate (319), an output end of the second servo motor (318) is installed with a first coupling (321), a Z-axis screw rod (325) is installed on one end of the first coupling (321), the Z-axis screw rod (325) passes through the second screw rod seat (322) and the X-axis fixed plate (328), a welding head fixing plate (315) is installed on the side of the welding head mounting plate (39) opposite to the X-axis fixed plate (328), and a swing welding head (313) is installed on the welding head fixing plate (315), Two photoelectric supports (311) are installed below the integral support (32) near the welding head mounting plate (39), and a product placement support (312) is installed on the photoelectric support (311). The visual system assembly (2) includes a visual system mounting plate (27), the visual system mounting plate (27) is fixed to the side of the X-axis fixing plate (328) opposite to the second motor mounting plate (329), a first guide shaft support (21) and a second guide shaft support (29) are installed on one side of the visual system mounting plate (27), the second guide shaft support (29) is located below the first guide shaft support (21), and a camera fixing shaft (22) is installed on one end of the first guide shaft support (21), a fixing rod (28) is installed on one end of the second guide shaft support (29), a fixing block (23) is sleeved on the camera fixing shaft (22), a camera adjustment plate (24) is installed on one side of the fixing block (23), a camera fixing plate (25) is installed on one side of the camera adjustment plate (24), and a camera (26) is installed on the camera fixing plate (25); The method comprises: The welding mark is reserved for the machine tool guide rail protective cover that needs to be welded. The reservation method is laser marking. The height of the machine tool guide rail protective cover that needs to be welded is measured manually and the measurement data is input into the touch screen controller. The assembled machine tool guide rail protective cover is manually placed on the plate chain conveyor line (4). The plate chain conveyor line (4) drives the machine tool guide rail protective cover to move. When the photoelectric bracket (311) and the induction switch on the product in place bracket (312) sense the product, the plate chain conveyor line (4) stops. The touch screen controller controls the second servo motor (318) to drive the Z-axis screw rod (325) to rotate according to the shield height manually input on the touch screen, so that the X-axis fixed plate (328) is in the first The three linear slides (326) slide on the visual system mounting plate (27) so that the visual system mounting plate (27) moves downward, causing the camera (26) to descend to the designated position. After the camera (26) reaches the designated position, it immediately takes the first photo. The photo is transmitted to the touch screen controller. The touch screen controller recognizes the welding mark in the photo, and then calculates the coordinates of the welding mark and sends it to the third servo motor (331) and the first servo motor (112) according to the specified rules. The photo is taken according to the size of the picture taken by the camera (26). There are one or more marks in the picture. After receiving the instruction, the third servo motor (331) drives the second servo motor (112) to move. The shaft (332) rotates, thereby rotating the X-axis screw rod (37), causing the welding head mounting plate (39) to slide on the second linear slide rail (35), causing the swing welding head (313) to move along the X-axis, and driving the reducer (113) to rotate through the first servo motor (112), thereby driving the gear (12) to rotate, and through the coordination of the rack (13), causing the first mounting plate (17) and the second mounting plate (19) to slide on the first linear slide rail (16), and driving the overall bracket (32) to move along the Y-axis through the first mounting plate (17) and the second mounting plate (19), causing the swing welding head (313) to move along the Y-axis, and then move to the end point where welding is required, and then turning off the laser. , the welding of the welding mark captured for the first time can be completed, and then the swing welding head (313) is controlled to move along the Y-axis and X-axis coordinates along the direction of entry of the welding workpiece, and then a second photo is taken and identified, and a new welding mark is identified. The height of the machine tool guide rail protective cover to be welded is manually re-measured, and the measurement data is input into the touch screen controller. The welding is performed again according to the above steps. When the camera (26) fails to capture the feature point twice, it is considered that the welding of the current product is completed, the X, Y and Z axes return to the origin, the plate chain conveyor line (4) moves forward, and the current product is moved to the unloading position. The plate chain conveyor line (4) stops, and the welded protective cover is manually taken out at the unloading position.

2. The visually guided welding method for a machine tool guide rail protective cover according to claim 1, characterized in that: A foot cup (116) is installed at the bottom of the base (15), and a caster (18) is rotatably connected to one side of the bottom of the base (15) close to the foot cup (116), and fixed feet (11) are installed on both symmetrical sides of the base (15).

3. The visually guided welding method for a machine tool guide rail protective cover according to claim 2, characterized in that: A first drag chain slot (115) is installed on one side of the base (15) adjacent to the fixed foot (11), a first drag chain (114) is installed on the top of the first drag chain slot (115), a first drag chain bracket (111) is installed on one side of the second mounting plate (19) close to the first drag chain (114), and a limit block (14) is installed between the rack (13) and one of the first linear slide rails (16).

4. The visually guided welding method for a machine tool guide rail protective cover according to claim 3, characterized in that: An integral mounting block (333) is installed at the bottom of the integral bracket (32), and the integral mounting block (333) is fixedly connected to the top of the first mounting plate (17) and the second mounting plate (19). A fixed plate positioning block (314) is installed above the welding head mounting plate (39) near the welding head fixed plate (315), and a dust removal bracket (316) is installed on one side of the welding head fixed plate (315) near the swing welding head (313).

5. The visually guided welding method for a machine tool guide rail protective cover according to claim 4, characterized in that: A first screw seat (36) is installed on one side of the X-axis fixing plate (328) close to the X-axis screw (37), and a second drag chain bracket (330) is installed on one side of the X-axis fixing plate (328) close to the second motor mounting plate (329).

6. The visually guided welding method for a machine tool guide rail protective cover according to claim 5, characterized in that: A second screw seat (322) is installed below the integral bracket (32) near the first coupling (321), a reinforcing rib (320) is installed on the side of the bottom of the first motor mounting plate (319) near the first coupling (321), a second drag chain slot (323) is installed on the side of the integral bracket (32) adjacent to the third linear slide rail (326), a second drag chain (324) is installed on one side of the second drag chain slot (323), a slot-type photoelectric sensor (34) is installed on the top of the X-axis fixing plate (328), a photoelectric sensor sheet (38) is installed on the top of the welding head mounting plate (39), a limit slot photoelectric sensor (33) is installed on the side of the integral bracket (32) opposite to the second drag chain slot (323), and a third guide shaft support (334) is installed below the third linear slide rail (326) near the Z-axis screw rod (325).

7. The visually guided welding method for a machine tool guide rail protective cover according to claim 1, characterized in that: A fixing rod bracket (211) is mounted on the fixing rod (28), a light source fixing bracket (212) is mounted on the bottom of the fixing rod bracket (211), and a light source (213) is mounted on the light source fixing bracket (212).

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