Window fillet weld polishing equipment

Abstract

The invention relates to the technical field of weld joint polishing, and discloses window fillet weld joint polishing equipment which comprises a window frame. The two polishing devices are used for polishing the welding part of the window frame; the expansion mechanism is used for controlling the two polishing devices to move outwards relatively to position the window frame and can also move transversely at the same time; and a pressing plate is arranged between the two polishing devices. According to the window corner welding seam polishing equipment, through mutual cooperation of the arranged expansion mechanism and the polishing devices, when an operator presses the whole equipment, the two polishing devices can be directly controlled to move to the welding seam of a window corner, the gravity of the whole equipment is supported and borne on a window frame, manual holding of the operator is not needed, and the labor intensity of the operator is lowered. And when the window frame is close to the vertical face of the window frame, the two side grinding pieces on the side face are controlled to grind a welding seam in the plane position, so that the overall grinding efficiency is improved, and the grinding process of an operator is simpler, more convenient, more efficient and more labor-saving.

Description

Technical Field

[0001] The invention relates to the technical field of weld grinding, in particular to a window corner weld grinding device. Background Art

[0002] Aluminum alloy is the most widely used type of non-ferrous metal structural material in industry. It has been widely used in aviation, aerospace, automobile, machinery manufacturing, shipbuilding and chemical industries. With the rapid development of industrial economy, the demand for aluminum alloy welded structural parts is increasing. Aluminum alloy doors and windows refer to doors and windows made of aluminum alloy extruded profiles as frames, stiles and sashes. They are called aluminum alloy doors and windows, or aluminum doors and windows for short. Aluminum alloy doors and windows are made of aluminum alloy profiles through cutting and welding.

[0003] When welding general aluminum alloy window frames, there will be a certain degree of welds. During production, they need to be polished and then painted. In the prior art, angle grinders are basically used for polishing. This grinding method is not easy to operate for window corners. The operator needs to hold the angle grinder and perform horizontal moving polishing on the window corners. In this method, the operator has to control the horizontal movement while bearing the weight of the angle grinder, which will cause unstable handholding. In addition, the operator polishes one side alone, which will undoubtedly affect the polishing and requires the operator to have too much experience. Therefore, a window corner weld grinding device is proposed to solve the above-mentioned problems. Summary of the invention

[0004] 1. Technical issues to be resolved In view of the deficiencies in the prior art, the present invention provides a window corner weld grinding device, which solves the problems in the prior art that the window corner grinding method in the window frame is too simple, the operator is time-consuming and labor-intensive during the grinding operation, and the grinding efficiency is low.

[0005] (II) Technical solution To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a window corner weld grinding device, comprising a window frame; two grinding devices, used to grind the welding part of the window frame; an expansion mechanism, used to control the two grinding devices to move relative to each other outward to position the window frame and also to perform lateral displacement; a pressure plate is arranged between the two grinding devices, and the expansion mechanism comprises a rolling device, a moving device, a top pressing device and a lateral displacement device; the rolling device is used to slide on the inner side surface of the window frame, the moving device is used to control the two grinding devices to unfold and move them to the weld of the window corner, the lateral displacement device is used to control the lateral movement of the grinding device, and the top pressing device is used to support and position the window frame externally.

[0006] Preferably, the rolling device includes a limiting rod, the bottom of which is rotatably connected to a roller via an axial rod, a rolling ring is provided on the roller, the rolling ring slides in a groove on the inner wall of the window frame, a transverse rod is connected to the limiting rod, and the limiting rod is slidably connected to the pressure plate.

[0007] Preferably, the moving device includes a flat plate, an oblique groove is provided on the flat plate, a sliding column is slidably connected in the oblique groove, the sliding column is connected to the pressure plate through a connecting piece, a transverse groove is provided on the flat plate, the transverse rod is slidably connected inside the transverse groove, the two grinding devices are respectively arranged on two flat plates, the bottom of the pressure plate is slidably connected to a T-block through a T-slot, the bottom of the T-block is connected to a guide rod, the guide rod is slidably connected to the inside of the flat plate, and a return spring is sleeved on the surface of the guide rod.

[0008] Preferably, the pressing device includes a push rod, one end of which is connected to a contact slide, the other end of which is slidably connected to the inside of a flat plate, a positioning spring is provided inside the flat plate, and the left end of the positioning spring is connected to the right end of the push rod.

[0009] Preferably, the transverse shifting device includes a handle, which is rotatably connected to the pressure plate through a connecting piece, and both ends of the handle are connected to rolling gears, and the surface of the rolling gear is meshed with a transverse shifting tooth plate, and the transverse shifting tooth plate is fixed on the flat plate.

[0010] Preferably, the grinding device includes a driving motor, the driving motor is fixed on the flat plate through a connecting plate, the output end of the driving motor is fixedly connected to a driving shaft, and the bottom of the driving shaft is connected to a grinding wheel.

[0011] Preferably, the surface of the driving shaft is fixedly connected to the first gear, the surface of the first gear is meshed with the second gear, the side of the second gear is fixedly connected to the clamping shaft, the clamping shaft is slidably connected to pulley one via a key slot, the surface of pulley one is connected to pulley two via a toothed belt transmission, the interior of pulley two is connected to a side grinding plate via an axle rod, the side of pulley two is rotatably connected to a bracket, the bottom of the bracket is slidably connected to the clamping shaft via a key slot, the clamping shaft is rotatably connected to a connecting frame, and the right end of the connecting frame is connected to the transverse rod.

[0012] Preferably, a compression spring is sleeved on the surface of the clamping shaft, one end of the compression spring abuts against the side surface of the pulley, and the other end of the compression spring is connected to the end surface of the clamping shaft.

[0013] Preferably, the bottom of the first gear is rotatably connected to a base plate, and a rotating yielding device is provided on the base plate. The rotating yielding device includes a gear rack, and the gear rack is slidably connected to the base plate. A resistance rack is connected to the gear rack, and the side of the resistance rack is located inside the base plate and is connected to a compression spring. A large gear is meshed on the surface of the gear rack, and the large gear is fixedly connected to the bracket.

[0014] (III) Beneficial effects Compared with the prior art, the present invention provides a window corner weld grinding device, which has the following beneficial effects: 1. The window corner weld grinding equipment, through the cooperation of the expansion mechanism and the grinding device, allows the operator to directly control the two grinding devices to move horizontally when pressing the entire device, and move the grinding wheel to the weld at the window corner. The gravity support of the entire device is carried on the window frame, and there is no need for the operator to hold it manually, making the grinding process more labor-saving. When approaching the vertical surface of the window frame, the rotating yielding device is used to rotate, and the two side grinding discs on the side are controlled to grind the welds in the flat position, thereby improving the overall grinding efficiency and making the operator's grinding process more simple, efficient and labor-saving.

[0015] 2. The window corner weld grinding equipment uses a rolling device to slide the roller on the slot on the window frame where the glass should be installed, so as to bear the weight of the entire equipment without the operator's hands bearing the weight. The bottom surface of the roller is flush with the lower plane of the grinding wheel, which can also prevent the grinding wheel from over-grinding the window frame.

[0016] 3. The window corner weld grinding equipment can first position the entire window frame through the top pressure device, and then fix the grinding equipment. It can also provide a certain degree of thrust on the vertical surface of the window frame, and then detect the welding quality of the window frame to avoid the situation where the weld foot position is difficult to check after the grinding is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a window corner weld grinding device proposed by the present invention; Figure 2 A schematic diagram of an expansion mechanism of a window corner weld grinding device proposed by the present invention; Figure 3 A schematic diagram of the flat plate structure of a window corner weld grinding device proposed by the present invention; Figure 4 This is a schematic diagram of the structure of a transverse movement device of a window corner weld grinding device proposed by the present invention; Figure 5 A schematic diagram of the structure of a grinding device for window corner weld grinding equipment proposed by the present invention; Figure 6 A schematic diagram of the position connection of two brackets of a window corner weld grinding device proposed by the present invention; Figure 7 This is a schematic structural diagram of a rotary yielding device for window corner weld grinding equipment proposed by the present invention.

[0018] In the figure: 1, window frame; 2, pressure plate; 3, expansion mechanism; 301, flat plate; 302, handle; 303, guide rod; 304, return spring; 305, sliding column; 306, T-block; 307, push rod; 308, contact slide plate; 309, positioning spring; 310, inclined groove; 311, transverse groove; 312, transverse rod; 313, limit rod; 314, roller; 315, rolling gear; 316, transverse gear plate; 4, opening Grinding device; 401, driving motor; 402, driving shaft; 403, grinding wheel; 404, first gear; 405, second gear; 406, pulley one; 407, pulley two; 408, side grinding plate; 409, clamping shaft; 410, extrusion spring; 411, connecting frame; 412, rotating yielding device; 4121, resistance frame; 4122, gear frame; 4123, compression spring; 4124, large gear; 413, bracket. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0020] See also Figure 1-7 A window corner weld grinding device comprises a window frame 1; two grinding devices 4, used for grinding the welding part of the window frame 1; an expansion mechanism 3, used for controlling the two grinding devices 4 to move relative to each other outward to position the window frame 1 and also to perform lateral displacement; a pressing plate 2 is arranged between the two grinding devices 4, and the expansion mechanism 3 comprises a rolling device, a moving device, a top pressing device and a lateral displacement device; the rolling device is used for sliding on the inner side surface of the window frame 1, the moving device is used for controlling the two grinding devices 4 to unfold and move them to the weld of the window corner, the lateral displacement device is used for controlling the lateral displacement of the grinding device 4, and the top pressing device is used for externally supporting and positioning the window frame 1.

[0021] In this embodiment, the rolling device includes a limit rod 313, the bottom of the limit rod 313 is rotatably connected to a roller 314 through an axle rod, a rolling ring is arranged on the roller 314, and the rolling ring slides in the inner wall groove of the window frame 1, and a transverse rod 312 is connected to the limit rod 313, and the limit rod 313 is slidably connected to the pressure plate 2. The moving device includes a flat plate 301, and an inclined groove 310 is provided on the flat plate 301, and a sliding column 305 is slidably connected in the inclined groove 310, and the sliding column 305 is connected to the pressure plate 2 through a connecting piece, and a transverse groove 311 is provided on the flat plate 301, and the transverse rod 312 is slidably connected inside the transverse groove 311. Two grinding devices 4 are respectively arranged on the two flat plates 301, and the rolling ring of the roller 314 is clamped in the glass installation groove on the inner side of the window frame 1, and then the window frame 1 is fixed by an external fixing fixture, and the operator holds the handle 302 with the other hand to control The downward movement of the pressing plate 2 will drive the sliding column 305 to slide in the inclined groove 310, and then drive the flat plate 301 to move outward. Through the symmetrical structure, the two flat plates 301 will expand outward synchronously at this time, and then control the two rollers 314 at the bottom to roll on the inner side of the window frame 1. Therefore, the overall groove is used to limit the internal two-way rolling, without the operator's naked eye alignment, and the gravity of the entire grinding equipment is directly borne by the window frame 1, without the operator holding it in the air, which is more labor-saving and simple.

[0022] Furthermore, the bottom of the pressure plate 2 is slidably connected to a T-block 306 via a T-slot, the bottom of the T-block 306 is connected to a guide rod 303 , the guide rod 303 is slidably connected to the inside of the flat plate 301 , and a return spring 304 is sleeved on the surface of the guide rod 303 .

[0023] Furthermore, the pressing device includes a push rod 307, one end of which is connected to a contact slide plate 308, and the other end of the push rod 307 is slidably connected to the inside of the flat plate 301. A positioning spring 309 is provided inside the flat plate 301, and the left end of the positioning spring 309 is connected to the right end of the push rod 307. When the two flat plates 301 are forced to expand and slide outward, the contact slide plate 308 on the push rod 307 is driven to abut against the inner side surface of the window frame 1 to support the window frame 1. The elastic force of the positioning spring 309 is used to squeeze and apply a certain degree of thrust to the window frame 1. If the welding position of the window frame 1 is desoldered during the force-bearing process, it means that there are hidden dangers in the welding of the window frame 1, desoldering, and cold welding, and re-welding is required, so it can also play a certain degree of detection effect.

[0024] In addition, the transverse movement device includes a handle 302, which is rotatably connected to the pressure plate 2 through a connecting piece, and rolling gears 315 are connected to both ends of the handle 302. The surface of the rolling gear 315 is meshed with a transverse movement tooth plate 316, and the transverse movement tooth plate 316 is fixed on the flat plate 301. If the position of the grinding wheel 403 is always kept fixed, the position of the window corner grinding will be an arc shape, which will cause defects, so a transverse movement device is set. At this time, the operator can rotate the handle 302, thereby driving the rotation of the rolling gear 315. The mutual meshing of the gear and the teeth will drive the transverse movement of the transverse movement tooth plate 316, and the transverse movement of the transverse movement tooth plate 316 will drive the flat plate 301 connected thereto to move left and right, and at this time, the grinding device 4 will move horizontally, so the grinding process presents a horizontal and horizontal two-way process, maintaining a linear grinding environment.

[0025] In addition, the grinding device 4 includes a driving motor 401, which is fixed to the flat plate 301 through a connecting plate, and the output end of the driving motor 401 is fixedly connected to a driving shaft 402, and the bottom of the driving shaft 402 is connected to a grinding wheel 403. The high-speed rotation of the driving motor 401 drives the synchronous rotation of the grinding wheel 403, thereby grinding the position of the weld.

[0026] It is worth noting that the surface of the driving shaft 402 is fixedly connected to the first gear 404, the surface of the first gear 404 is meshed with the second gear 405, the side of the second gear 405 is fixedly connected to the clamping shaft 409, the clamping shaft 409 is slidably connected to the pulley 1 406 through a keyway, the surface of the pulley 1 406 is connected to the pulley 2 407 through a toothed belt transmission, the interior of the pulley 2 407 is connected to the side grinding plate 408 through an axle rod, the side of the pulley 2 407 is rotatably connected to the bracket 413, the bottom of the bracket 413 is slidably connected to the clamping shaft 409 through a keyway, the clamping shaft 409 is rotatably connected to the connecting frame 411, and the right end of the connecting frame 411 is connected to the transverse rod 312. In order to improve the overall grinding efficiency, grinding of the side of the window frame 1 is set. When the driving shaft 402 rotates, the engagement of the bevel gear will drive the rotation of the clamping shaft 409, and the clamping shaft 409 will drive the rotation of the pulley 406 through the keyway connection, and then drive the side grinding plate 408 to rotate through the transmission connection of the toothed belt. The side grinding plate 408 is set for grinding the side.

[0027] It is worth noting that a compression spring 410 is sleeved on the surface of the clamping shaft 409, one end of the compression spring 410 abuts against the side of the pulley 1 406, and the other end of the compression spring 410 is connected to the end face of the clamping shaft 409. By using two compression springs 410 with symmetrical structures, a compression elastic force is provided to control the pulley 1 406 to always maintain a relative position to avoid cross-positioning. Because when the grinding wheel 403 moves laterally, the side grinding sheet 408 does not need to move laterally, so the use of two compression springs 410 will control the clamping shaft 409 to move laterally under force, and the position of the pulley 1 406 will not be offset.

[0028] It is worth mentioning that the bottom of the first gear 404 is rotatably connected to the bottom plate, and a rotating yielding device 412 is arranged on the bottom plate. The rotating yielding device 412 includes a gear rack 4122, and the gear rack 4122 is slidably connected to the bottom plate. A resistance frame 4121 is connected to the gear rack 4122, and the side of the resistance frame 4121 is located inside the bottom plate and is connected to a compression spring 4123. A large gear 4124 is meshed with the surface of the gear rack 4122, and the large gear 4124 is fixedly connected to the bracket 413. When the grinding device 4 expands and moves, it will drive the base plate to move synchronously, and the movement of the base plate will drive the synchronous movement of the abutment frame 4121, and then it will abut against the vertical side of the window frame 1, and then continue to move, which will control the gear frame 4122 connected to the abutment frame 4121 to move horizontally. After the gears are engaged, it will drive the large gear 4124 to rotate, and then drive the bracket 413 to rotate in a circle of the clamping shaft 409, and then rotate the two side grinding plates 408 to the side weld position of the window frame 1, so as to achieve the effect of rotational grinding, so that the overall synchronous grinding of three sides is achieved.

[0029] The electrical components mentioned in this article are all connected to an external main controller and 220V mains electricity, and the main controller can be a conventional known device for controlling a computer or the like.

[0030] The working principle is that first, the entire device needs to be placed inside the window frame 1, and the roller 314 is clamped in the glass installation groove on the inner side of the window frame 1. Then, the window frame 1 is fixed with an external fixing fixture, or the operator directly uses the hand to hold it to a vertical state, and then the operator holds the handle 302 with the other hand to control its downward pressure, thereby driving the downward movement of the pressure plate 2, and the downward movement of the pressure plate 2 will drive the sliding column 305 to slide in the inclined groove 310, thereby driving the flat plate 301 to move outward. Through the symmetrical structure set, the two flat plates 301 will expand outward synchronously at this time, thereby controlling the two rollers 314 at the bottom to roll on the inner side of the window frame 1, and the flat plate 301 Under the synchronous movement, the contact slide plate 308 on the push rod 307 will also be driven to abut against the inner side of the window frame 1 to support the window frame 1, and the elastic force of the positioning spring 309 will be used to apply a certain degree of thrust to the window frame 1. If the welding position of the window frame 1 is desoldered during the force-bearing process, it means that there are hidden dangers in the welding of the window frame 1, desoldering, and cold welding, and re-welding is required. Therefore, it can also have a certain degree of detection effect. When the flat plate 301 moves laterally and expands outward, it will drive the entire grinding device 4 to move, and move the grinding wheel 403 to the welding position of the window corner. Then, the driving motor 401 is started, and the high-speed rotation of the grinding wheel 403 is driven by the drive of the motor to perform the grinding operation. If the position of the grinding wheel 403 is always kept fixed, the grinding position of the window corner will be an arc shape, which is a defect. Therefore, a transverse movement device is provided. At this time, the operator can rotate the handle 302, thereby driving the rolling gear 315 to rotate. The mutual engagement of the gear and the teeth will drive the transverse movement of the transverse tooth plate 316, and the transverse movement of the transverse tooth plate 316 will drive the connected plate 301 to move left and right, thereby achieving transverse movement of a certain distance. The sliding column 305 is long, so the plate 301 will not interfere with the pressure plate 2 when moving, and when the plate 301 moves, the entire T-block 306 will slide at the bottom of the pressure plate 2, so there will be no interference. The reset spring 304 is provided so that when the operator releases the handle 302, that is, after the downward pressure is released, the equipment will be elastically lifted by the two reset springs 304 for reset. Therefore, when the plate 301 moves laterally, the grinding wheel 403 on the entire grinding device 4 will be driven to move laterally, so the grinding process presents a horizontal and horizontal two-way process, maintaining a linear grinding environment.In order to improve the overall grinding efficiency, a grinding device for the side of the window frame 1 is provided. When the driving shaft 402 rotates, the engagement of the bevel gear will drive the rotation of the card shaft 409, and the card shaft 409 will drive the rotation of the pulley 406 through the keyway connection, and then drive the side grinding sheet 408 to rotate through the transmission connection of the toothed belt. The side grinding sheet 408 is provided for grinding the side, but in the initial stage, the side grinding sheet 408 is in a retracted state, because in the retracted state, the entire grinding device is convenient to be placed directly on the window When the grinding device 4 expands and moves, it will drive the bottom plate to move synchronously, and the movement of the bottom plate will drive the synchronous movement of the contact frame 4121, and then contact the vertical side of the window frame 1, and then continue to move, which will control the gear frame 4122 connected to the contact frame 4121 to move horizontally, and after the meshing of the gears, it will drive the rotation of the large gear 4124, and then drive the bracket 413 to rotate in the circle of the clamping shaft 409, and then rotate and shift the two side grinding plates 408 to the side welding position of the window frame 1, so as to achieve the effect of rotary grinding. The clamping shaft 409 is a keyway structure, so even when the grinding device 4 moves horizontally, the pulley 1 406 will slide on the clamping shaft 409 and keep it rotating, so when grinding the side, the lateral movement of the equipment will not cause interference, and the use of two symmetrically structured extrusion springs 410 will provide extrusion elastic force to control the pulley 1 406 to always remain in a relative position to avoid stringing. Therefore, the overall principle is that the operator presses down with his hand and rotates a certain component, which will control the grinding device 4 to move relative to the weld position to be ground. Under the condition of synchronous movement and pressing down, the side grinding parts will also be controlled to unfold, and the window corner position of the window frame 1 will be synchronously ground on three sides, thereby improving the overall grinding efficiency and facilitating the actual operation of the operator.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

Claims

1. A window corner weld grinding device, characterized in that: include Window frame (1); Two grinding devices (4) for grinding the welded parts of the window frame (1); An expansion mechanism (3) is used to control the two grinding devices (4) to move outward relative to each other to position the window frame (1) and to perform lateral displacement at the same time; A pressing plate (2) is arranged between the two grinding devices (4), and the expansion mechanism (3) comprises a rolling device, a moving device, a pressing device and a transverse moving device; The rolling device is used to slide on the inner side of the window frame (1), the moving device is used to control the two grinding devices (4) to unfold and move them to the weld at the window corner, the transverse movement device is used to control the transverse movement of the grinding devices (4), and the top pressing device is used to support and position the window frame (1).

2. A window corner weld grinding device according to claim 1, characterized in that: The rolling device comprises a limit rod (313), the bottom of the limit rod (313) is rotatably connected to a roller (314) via a shaft, a rolling ring is provided on the roller (314), and the rolling ring slides in a groove on the inner wall of the window frame (1), the limit rod 313 is connected to a transverse rod (312), and the limit rod (313) is slidably connected to the pressure plate (2).

3. A window corner weld grinding device according to claim 2, characterized in that: The moving device comprises a plate (301), the plate (301) is provided with an inclined groove (310), a sliding column (305) is slidably connected in the inclined groove (310), the sliding column (305) is connected to the pressing plate (2) via a connecting piece, the plate (301) is provided with a transverse groove (311), the transverse rod (312) is slidably connected inside the transverse groove (311), the two grinding devices (4) are respectively arranged on the two plates (301), the bottom of the pressing plate (2) is slidably connected to a T-block (306) via a T-slot, the bottom of the T-block (306) is connected to a guide rod (303), the guide rod (303) is slidably connected inside the plate (301), and a return spring (304) is sleeved on the surface of the guide rod (303).

4. A window corner weld grinding device according to claim 3, characterized in that: The pressing device comprises a push rod (307), one end of which is connected to a contact slide plate (308), the other end of which is slidably connected to the inside of a flat plate (301), a positioning spring (309) is provided inside the flat plate (301), and the left end of the positioning spring (309) is connected to the right end of the push rod (307).

5. The window corner weld grinding device according to claim 4, characterized in that: The transverse shifting device comprises a handle (302), the handle (302) being rotatably connected to the pressure plate (2) via a connecting piece, two ends of the handle (302) being connected to rolling gears (315), a transverse shifting tooth plate (316) being meshed on the surface of the rolling gear (315), and the transverse shifting tooth plate (316) being fixed on the flat plate (301).

6. A window corner weld grinding device according to claim 5, characterized in that: The grinding device (4) comprises a driving motor (401), the driving motor (401) being fixed to the flat plate (301) via a connecting plate, the output end of the driving motor (401) being fixedly connected to a driving shaft (402), and the bottom of the driving shaft (402) being connected to a grinding wheel (403).

7. The window corner weld grinding device according to claim 6, characterized in that: The surface of the driving shaft (402) is fixedly connected to a first gear (404), the surface of the first gear (404) is meshed with a second gear (405), the side of the second gear (405) is fixedly connected to a clamping shaft (409), the clamping shaft (409) is slidably connected to a pulley 1 (406) via a keyway, the surface of the pulley 1 (406) is connected to a pulley 2 (407) via a toothed belt transmission, the interior of the pulley 2 (407) is connected to a side grinding plate (408) via an axle rod, the side of the pulley 2 (407) is rotatably connected to a bracket (413), the bottom of the bracket (413) is slidably connected to the clamping shaft (409) via a keyway, the clamping shaft (409) is rotatably connected to a connecting frame (411), and the right end of the connecting frame (411) is connected to the transverse rod (312).

8. The window corner weld grinding device according to claim 7, characterized in that: A compression spring (410) is sleeved on the surface of the clamping shaft (409), one end of the compression spring (410) abuts against the side surface of the pulley (406), and the other end of the compression spring (410) is connected to the end surface of the clamping shaft (409).

9. The window corner weld grinding device according to claim 8, characterized in that: The bottom of the first gear (404) is rotatably connected to a bottom plate, and a rotational yielding device (412) is arranged on the bottom plate. The rotational yielding device (412) comprises a gear rack (4122), and the gear rack (4122) is slidably connected to the bottom plate. A resistance frame (4121) is connected to the gear rack (4122), and a side surface of the resistance frame (4121) is located inside the bottom plate and is connected to a compression spring (4123). A large gear (4124) is meshed on the surface of the gear rack (4122), and the large gear (4124) is fixedly connected to the bracket (413).

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