Tool clamp for laser cutting of automobile parts

Abstract

The invention discloses a tool clamp for laser cutting of automobile parts, and relates to the technical field of metal cutting equipment manufacturing, the tool clamp comprises a laser welding machine, an electric sliding machine A is arranged at the top of the laser welding machine, an electric sliding machine B is arranged at the top of the electric sliding machine A, and a welding device is arranged on one side of the electric sliding machine B; a heat dissipation mechanism is arranged at the bottom of the welding device, metal slag existing on the surface of a plate at the to-be-welded position at the moment and welding slag existing in previous welding are fully thrown out through a fixing plate through the heat dissipation mechanism, and meanwhile, the metal slag can be fully removed along with the rotating centrifugal effect of the fixing plate. Welding slag entering each fixing plate is further thrown outwards, so that the welding slag generated in the welding process and particles on the surfaces of the plates are automatically pushed out before welding, and the problems of air holes, inclusions and the like in the welding process caused by attachment of the welding slag and the particles are avoided; therefore, adverse effects on the reliability and the service life of the welding structure are also avoided.

Description

Technical Field

[0001] The invention relates to the technical field of metal cutting equipment manufacturing, in particular to a tooling fixture used for laser cutting of automobile parts. Background Art

[0002] Laser welding uses high-energy laser pulses to locally heat a small area of ​​the material. The energy of the laser radiation diffuses into the interior of the material through heat conduction, melting the material to form a specific molten pool. A tooling fixture for laser cutting of automotive parts described in a patent application with announcement number CN218081033U relates to the technical field of metal cutting equipment manufacturing, and includes a device base, on which a slide groove, a fixed plate, a laser cutting machine and a controller are provided. A slider is slidably connected in the slide groove, an electric telescopic rod is fixed on the slider, a mounting block is fixed on the piston end of the electric telescopic rod, and a clamping assembly is provided on the mounting block. The slider is pushed to move in the slide groove by a first electric push rod, thereby adjusting the length between the part and the laser cutting machine. The mounting block and the clamping assembly are driven up and down by the extension and retraction of the electric telescopic rod to cut parts of different heights.

[0003] When laser welding is performed on metal plate parts used in automobiles, the ambient temperature is often low, and the high temperature welding at the welding position causes a sudden change in temperature, which increases the stress in the metal plate and causes internal deformation of the metal plate that affects the welding effect. In addition, the splashing of welding slag will also cause the presence of welding slag at the welding position, resulting in problems such as pores and inclusions in the welding. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a fixture for laser cutting of automobile parts, which achieves the purpose of solving the above-mentioned problems.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a fixture for laser cutting of automobile parts, comprising a laser welding machine, an electric slide A is arranged on the top of the laser welding machine, an electric slide B is arranged on the top of the electric slide A, a lift is arranged on one side of the electric slide B, a welder is arranged on one side of the lift, and a heat dissipation mechanism is arranged at the bottom of the welder; The heat dissipation mechanism comprises: A telescopic rod, the top of which is fixedly connected to the bottom of the welder, a clamping block is fixedly connected to the bottom of the telescopic rod, a connecting ring is slidably connected to the inner wall of the clamping block, a built-in spring is arranged inside the telescopic rod, and the telescopic rod is used to use the built-in spring to push the connecting ring down; The connecting sleeve is a truncated cone-shaped hollow sleeve structure, the inner wall of the connecting sleeve is provided with an arc groove, the arc groove is used for ventilation, the top of the connecting sleeve is rotatably connected with a rotating ball A, the top of the rotating ball A is fixedly connected with a hinge rod, one end of the hinge rod is fixedly connected with a rotating ball B, the outer wall of the rotating ball B is rotatably connected to the bottom of the welder, the inner wall of the connecting ring is fixedly connected to the outer wall of the connecting sleeve, and the connecting sleeve is used to absorb heat from the metal sheet.

[0006] Preferably, blades are fixedly connected to the outer wall of the connecting sleeve, and fixing plates are fixedly connected to the bottom of the connecting sleeve, and gaps are formed between each fixing plate.

[0007] Preferably, a transverse plate is fixedly connected to one side of the block, a scraper is fixedly connected to the bottom of the transverse plate, and one side of the scraper is slidably connected to the inner wall of the connecting sleeve.

[0008] Preferably, the blades are arranged obliquely, the arc-shaped groove is an arc-shaped groove, and the outer wall of the connecting sleeve is provided with an opening and closing mechanism.

[0009] Preferably, the opening and closing mechanism comprises a scraper strip, one side of the scraper strip is fixedly connected to a slider, and the outer wall of the slider is slidably connected to the inner wall of the arc-shaped groove.

[0010] Preferably, a sliding plate is fixedly connected to one side of the scraper strip, a sliding sleeve A is slidably connected to the outer wall of the sliding plate, and a sliding sleeve B is slidably connected to the outer wall of the sliding sleeve A.

[0011] Preferably, one side of the sliding sleeve B is fixedly connected to one side of the blade, and the sliding plate, sliding sleeve A and sliding sleeve B are used to cover and open the arc groove.

[0012] Preferably, the sliding plate, sliding sleeve A and sliding sleeve B are all arc-shaped plate structures, and the fixed plate is a square plate structure.

[0013] The present invention provides a fixture for laser cutting of automobile parts, which has the following beneficial effects: 1. The present invention forms an air circulation path from top to bottom by setting a heat dissipation mechanism, so that the metal slag on the surface of the plate to be welded and the welding slag from the previous welding can be fully thrown out through the fixed plate. At the same time, accompanied by the rotating centrifugal effect of the fixed plate, the welding slag entering between each fixed plate is further thrown out, thereby completing the automatic pushing out of the welding slag generated in the welding and the particles on the surface of the plate before welding, avoiding the problems of pores and inclusions in the welding process due to the adhesion of welding slag and particles, thereby avoiding adverse effects on the reliability and service life of the welding structure.

[0014] 2. The present invention sets a heat dissipation mechanism. In the process of continuous lifting and lowering of the laser cutting of the welder, the connecting sleeve is continuously pushed by the hinged rod to rotate back and forth, so that the heat absorbed by the connecting sleeve is quickly blown into the connecting sleeve by the fan of the blades, and the arc groove is used to realize rapid heat exchange between temperature and air during discharge, so as to achieve rapid heat dissipation of the connecting sleeve, and then effectively and stably maintain stable heat dissipation of the metal plate, thereby avoiding the problem that the temperature difference is too large and it is easy to cause partial warping and deformation of the metal plate, and maintaining continuous and stable heat dissipation of the laser welding position in real time; 3. The present invention sets a heat dissipation mechanism. When the welder is lifted to weld the next position, the position to be welded can be preheated by the temperature of the connecting sleeve at this time, so that its temperature can be partially increased before welding. It can also effectively avoid excessive temperature difference, which causes the laser welding to cause the plate to heat up quickly, resulting in the problem of rapid increase of stress inside the metal plate and deformation.

[0015] 4. The present invention sets an opening and closing mechanism. When the connecting sleeve rotates, the clamping block and the cross plate remain stationary and form a relative rotational movement with the connecting sleeve. Therefore, in the process of the welder descending and lifting, the rotation of the connecting sleeve will slide and scrape with the clamping block, the cross plate and the scraper to scrape off the welding slag produced by the laser welding attached to the connecting sleeve. After falling, the welding slag will flow outward from between the fixed plates with the air, thereby realizing automatic discharge of the welding slag, avoiding excessive accumulation of welding slag on the connecting sleeve, which will cause it to fall during laser cutting and touch the welding of the welder, resulting in a decrease in welding accuracy.

[0016] 5. The present invention sets an opening and closing mechanism to quickly open the arc groove during laser welding, so that it can quickly exchange heat with the air, and quickly cool down the connecting sleeve that is quickly heated at this time, so as to prevent the problem of excessive temperature of the connecting sleeve. At the same time, when the welder is lifted after laser welding, the connecting sleeve will rotate in the opposite direction, so as to use the inertia of the scraper to slide in the arc groove in the connecting sleeve in the opposite direction, and drive the sliding plate, sliding sleeve A, and sliding sleeve B to extend, and close the arc groove, so as to insulate the connecting sleeve to a certain extent at this time, so that when it descends to weld the metal plate next time, the residual heat can be used to quickly heat the surface of the metal plate, thereby reducing the problem of excessive temperature difference during welding, and effectively using the heat dissipation and heat preservation of the connecting sleeve to minimize the temperature difference problem of the metal plate.

[0017] 6. The present invention is provided with an opening and closing mechanism. During welding, the open arc groove provides a certain discharge space for the welding slag bursting outward, thereby preventing the welding slag from accumulating on the connecting sleeve. When the scraper slides on the inner wall of the arc groove, the laser welding machine embedded in the arc groove will further scrape off the residue in the arc groove, thereby preventing the welding slag from solidifying in the arc groove and causing blockage and inability to fall off when the arc groove is ventilated and heat-dissipated. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 The structure of the heat dissipation mechanism of the present invention is shown in FIG. Figure 1 ; Figure 3 For the present invention Figure 2 A magnified image of point A; Figure 4 The structure of the heat dissipation mechanism of the present invention is shown in FIG. Figure 2 ; Figure 5 The structure of the heat dissipation mechanism of the present invention is shown in FIG. Figure 3 ; Figure 6 For the present invention Figure 5 The enlarged view of point B; Figure 7 The structure of the heat dissipation mechanism of the present invention is shown in FIG. Figure 4 ; Figure 8 The motion state of the heat dissipation mechanism of the present invention is shown in FIG. Figure 1 ; Fig. 9 The motion state of the heat dissipation mechanism of the present invention is shown in FIG. Figure 2 ; Fig.10 It is a schematic diagram of the disassembled structure of the opening and closing mechanism of the present invention; Fig.11 It is a structural schematic diagram of the opening and closing mechanism of the present invention; Fig.12 It is a schematic diagram of the motion state of the opening and closing mechanism of the present invention.

[0019] In the figure: 1 laser welding machine, 2 electric slide A, 3 heat dissipation mechanism, 301 telescopic rod, 302 arc groove, 303 connecting sleeve, 304 rotating ball A, 305 hinge rod, 306 rotating ball B, 307 fixed plate, 308 block, 309 horizontal plate, 310 scraper, 311 connecting ring, 312 blade, 4 opening and closing mechanism, 401 scraper, 402 sliding plate, 403 sliding sleeve A, 404 sliding sleeve B, 405 slider, 5 electric slide B, 6 lifter, 7 welder. DETAILED DESCRIPTION

[0020] Example 1: Please refer to Figure 1-3 The present invention provides a technical solution: a fixture for laser cutting of automobile parts, comprising a laser welding machine 1, an electric slide A2 is arranged on the top of the laser welding machine 1, an electric slide B5 is arranged on the top of the electric slide A2, a lift 6 is arranged on one side of the electric slide B5, a welder 7 is arranged on one side of the lift 6, and a heat dissipation mechanism 3 is arranged at the bottom of the welder 7; The heat dissipation mechanism 3 comprises: The telescopic rod 301 has a top that is fixedly connected to the bottom of the welder 7, a clamping block 308 that is fixedly connected to the bottom of the telescopic rod 301, a connecting ring 311 that is slidably connected to the inner wall of the clamping block 308, and a built-in spring that is provided inside the telescopic rod 301. The telescopic rod 301 is used to use the built-in spring to push the connecting ring 311 down; The connecting sleeve 303 is a truncated cone-shaped hollow sleeve structure. The inner wall of the connecting sleeve 303 is provided with an arc groove 302, which is used for ventilation. The top of the connecting sleeve 303 is rotatably connected to a rotating ball A304, the top of the rotating ball A304 is fixedly connected to a hinge rod 305, one end of the hinge rod 305 is fixedly connected to a rotating ball B306, the outer wall of the rotating ball B306 is rotatably connected to the bottom of the welder 7, the inner wall of the connecting ring 311 is fixedly connected to the outer wall of the connecting sleeve 303, and the connecting sleeve 303 is used to absorb heat from the metal plate; When in use, the electric slide A2 is started to control the electric slide B5 to move on the laser welding machine 1, driving the electric slide B5 to move above the plate, and then the lift 6 is started to control the welder 7 to move up and down, and when the welder 7 is lowered, the laser welding of the metal plate to be processed is realized; Example 2: Please refer to Figure 1-9 On the basis of the first embodiment, the present invention provides a technical solution: the outer wall of the connecting sleeve 303 is fixedly connected with a blade 312 , the bottom of the connecting sleeve 303 is fixedly connected with a fixing plate 307 , and a gap is formed between each fixing plate 307 .

[0021] A transverse plate 309 is fixedly connected to one side of the clamping block 308 , a scraper 310 is fixedly connected to the bottom of the transverse plate 309 , and one side of the scraper 310 is slidably connected to the inner wall of the connecting sleeve 303 .

[0022] The blade 312 is inclined, the arc groove 302 is an arc-shaped groove, and the outer wall of the connecting sleeve 303 is provided with an opening and closing mechanism 4; When the welder 7 descends and uses the laser head below to perform laser welding on the metal sheet, the welder 7 will first push the hinge rod 305 and the rotating ball A304 to the bottom of the connecting sleeve 303 to press against the surface of the metal piece through the rotating ball B306. After pressing against the surface, as the welder 7 continues to descend, the rotating ball B306 pushes the hinge rod 305 to the rotating ball A304 and the connecting sleeve 303 to rotate, and the rotating ball B306 is restricted from rotating at the bottom of the welder 7, so that the hinge rod 305 always keeps itself in a vertically falling state. The connecting sleeve 303 is held in an inclined state and cannot be rotated to a vertical state, so that when the rotating ball A304 is pushed to the connecting sleeve 303 by the hinge rod 305, the connecting sleeve 303 is pushed to rotate, and the hinge rod 305 begins to be hinged and tilted, thereby realizing the rapid rotation of the connecting sleeve 303. After the connecting sleeve 303 rotates, the laser head at the bottom of the welder 7 drops to the bottom of the connecting sleeve 303 as the welder 7 continues to drop, thereby starting the laser welding work on the plate. Before the laser welding work, the connecting sleeve 303 is The rotation drives the blades 312 on the outer wall to rotate, thereby realizing the rotating fan effect, which will realize the rapid flow of air. When the connecting sleeve 303 rotates, the air can only flow through the gap formed by the bottom of the connecting sleeve 303 being supported by the fixed plate 307. Therefore, when the connecting sleeve 303 rotates and uses the blades 312 to fan, the air inside the air connecting sleeve 303 flows out from each fixed plate 307, and the air above the connecting sleeve 303 is replenished into the connecting sleeve 303, forming an air flow path from top to bottom, and the metal slag on the surface of the plate to be welded at this time and the welding slag existing in the previous welding are fully thrown out through the fixed plate 307. At the same time, accompanied by the rotating centrifugal effect of the fixed plate 307, the welding slag entering between each fixed plate 307 is further thrown out, thereby completing the automatic push-out of the welding slag generated during welding and the particles on the surface of the plate before welding, avoiding the problems of pores and inclusions in the welding process caused by the adhesion of welding slag and particles, thereby avoiding the adverse effects on the reliability and service life of the welding structure; And when the welder 7 continuously welds the metal plates, the temperature of the metal plate at the welding position will be too high, and a temperature difference will be formed with the metal plates at other positions. If the temperature difference is too large, it will easily cause the metal plate to partially warp and deform. In the welding process, since the connecting sleeve 303 is always pushed by the elastic force of the connecting sleeve 303 and the built-in spring inside the connecting sleeve 303, the clamping block 308 always presses the connecting sleeve 303 tightly against the surface of the plate through the connecting ring 311, so that the temperature generated by the metal plate at the laser cutting position is quickly absorbed by the connecting sleeve 303 that fits it, and the temperature and heat quickly enter the connecting sleeve 303. At the same time, in the process of continuous lifting and lowering of the laser cutting of the welder 7, the connecting sleeve 303 is continuously pushed by the hinged rod 305 to rotate back and forth, so that the fanning of the blades 312 is realized to fan the air The air circulates, and the air continuously enters the connecting sleeve 303 and is discharged from the gap of the fixed plate 307 below the connecting sleeve 303. When being discharged, the arc groove 302 is used to achieve a rapid heat exchange between the temperature and the air, and the rapid heat dissipation of the connecting sleeve 303 is achieved, thereby effectively and stably maintaining the stable heat dissipation of the metal plate, thereby avoiding the problem that the temperature difference is too large, which may easily cause the metal plate to partially warp and deform. The laser welding position is maintained with continuous and stable heat dissipation in real time. When the welder 7 is lifted and the next position is welded, the position to be welded can be preheated by the temperature of the connecting sleeve 303 at this time, so that its temperature can be partially increased before welding, which can also effectively avoid the problem that the temperature difference is too large, which causes the laser welding to cause the plate to heat up quickly, and the stress inside the metal plate to increase rapidly and deform. When the connecting sleeve 303 rotates, the telescopic rod 301 drives the clamping block 308 to be rotatably connected with the connecting sleeve 303 through the connecting ring 311. Therefore, when the connecting sleeve 303 rotates, the clamping block 308 and the cross plate 309 remain stationary and form a relative rotational movement with the connecting sleeve 303. Therefore, during the process of the welder 7 descending and welding and lifting, the rotation of the connecting sleeve 303 will slide and scrape with the clamping block 308, the cross plate 309 and the scraper 310 to relatively rotate, so as to scrape off the welding slag produced by the laser welding attached to the connecting sleeve 303. After falling, the welding slag will flow outward from the fixed plate 307 with the air, so as to realize the automatic discharge of the welding slag, so as to avoid the welding slag from accumulating too much on the connecting sleeve 303, which will cause the welding slag to fall during laser cutting and touch the welding of the welder 7, resulting in the problem of reduced welding accuracy. Example 3: Please refer to Figure 1-12 On the basis of the first and second embodiments, the present invention provides a technical solution: the opening and closing mechanism 4 includes a scraper bar 401 , a slider 405 is fixedly connected to one side of the scraper bar 401 , and the outer wall of the slider 405 is slidably connected to the inner wall of the arc groove 302 .

[0023] A sliding plate 402 is fixedly connected to one side of the scraper strip 401, a sliding sleeve A403 is slidably connected to the outer wall of the sliding plate 402, and a sliding sleeve B404 is slidably connected to the outer wall of the sliding sleeve A403.

[0024] One side of the sliding sleeve B404 is fixedly connected to one side of the blade 312 , and the sliding plate 402 , the sliding sleeve A403 , and the sliding sleeve B404 are used to cover and open the arc groove 302 .

[0025] The sliding plate 402, the sliding sleeve A403, and the sliding sleeve B404 are all arc-shaped plate structures, and the fixed plate 307 is a square plate structure.

[0026] When the welder 7 descends for welding and the connecting sleeve 303 rotates, the scraper strip 401 will slide along the outer wall of the connecting sleeve 303 in the opposite direction of the rotation of the connecting sleeve 303 due to inertia. When the welding head at the bottom of the welder 7 is against the metal plate for welding, the rotation of the connecting sleeve 303 stops rapidly and the scraper strip 401 begins to slide in the direction of the previous rotation of the connecting sleeve 303 due to the inertia of the rotation driven by it. The scraper strip 401 slides inside the arc groove 302 and causes the sliding plate 402 and the sliding sleeve A403 and the sliding sleeve B404 to contract, thereby opening the arc groove 302 and performing subsequent laser welding work, so that the arc groove 302 can be quickly opened during the laser welding work, so that it can quickly exchange heat with the air. The rapidly heated connection sleeve 303 is rapidly cooled down to prevent the connection sleeve 303 from being overheated. At the same time, when the welder 7 is lifted after laser welding, the connection sleeve 303 rotates in the opposite direction, thereby utilizing the inertia of the scraper strip 401 to slide in the arc groove 302 in the connection sleeve 303 in the opposite direction, and driving the sliding plate 402, the sliding sleeve A403, and the sliding sleeve B404 to extend, closing the arc groove 302, thereby heat-insulating the connection sleeve 303 to a certain extent at this time, so that when it descends to weld the metal plate next time, the residual heat is utilized to quickly heat the surface of the metal plate, thereby reducing the problem of excessive temperature difference during welding, and effectively utilizing the heat dissipation and heat preservation of the connection sleeve 303 to minimize the temperature difference problem of the metal plate; During welding, the open arc groove 302 will provide a certain discharge space for the welding slag that bursts outward, so as to prevent the welding slag from accumulating on the connecting sleeve 303. When the scraper 401 slides on the inner wall of the arc groove 302, the laser welding machine 1 embedded in the arc groove 302 will further scrape off the residue in the arc groove 302, thereby preventing the welding slag from solidifying in the arc groove 302 and causing blockage and inability to fall off when the arc groove 302 is ventilated and heat-dissipated; The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A fixture for laser cutting of automobile parts, comprising a laser welding machine (1), an electric slide A (2) being arranged on the top of the laser welding machine (1), and an electric slide B (5) being arranged on the top of the electric slide A (2), characterized in that: A lift (6) is provided on one side of the electric slide machine B (5), a welder (7) is provided on one side of the lift (6), and a heat dissipation mechanism (3) is provided at the bottom of the welder (7); The heat dissipation mechanism (3) comprises: a telescopic rod (301), the top of the telescopic rod (301) being fixedly connected to the bottom of the welder (7), the bottom of the telescopic rod (301) being fixedly connected to a clamping block (308), the inner wall of the clamping block (308) being slidably connected to a connecting ring (311), the interior of the telescopic rod (301) being provided with a built-in spring, the telescopic rod (301) being used to use the built-in spring to push the connecting ring (311) downward; A connecting sleeve (303), the connecting sleeve (303) is a truncated cone-shaped hollow sleeve structure, an inner wall of the connecting sleeve (303) is provided with an arc groove (302), the arc groove (302) is used for ventilation, a rotating ball A (304) is rotatably connected to the top of the connecting sleeve (303), a hinge rod (305) is fixedly connected to the top of the rotating ball A (304), one end of the hinge rod (305) is fixedly connected to a rotating ball B (306), an outer wall of the rotating ball B (306) is rotatably connected to the bottom of the welder (7), the inner wall of the connecting ring (311) is fixedly connected to the outer wall of the connecting sleeve (303), and the connecting sleeve (303) is used for absorbing heat from the metal plate.

2. The fixture for laser cutting of automobile parts according to claim 1, characterized in that: The outer wall of the connecting sleeve (303) is fixedly connected to a blade (312), and the bottom of the connecting sleeve (303) is fixedly connected to a fixing plate (307), with a gap formed between each fixing plate (307).

3. The fixture for laser cutting of automobile parts according to claim 2 is characterized in that: A transverse plate (309) is fixedly connected to one side of the clamping block (308), a scraper (310) is fixedly connected to the bottom of the transverse plate (309), and one side of the scraper (310) is slidably connected to the inner wall of the connecting sleeve (303).

4. The fixture for laser cutting of automobile parts according to claim 3 is characterized in that: The blades (312) are arranged obliquely, the arc-shaped groove (302) is an arc-shaped groove, and an opening and closing mechanism (4) is arranged on the outer wall of the connecting sleeve (303).

5. The fixture for laser cutting of automobile parts according to claim 4 is characterized in that: The opening and closing mechanism (4) comprises a scraper bar (401), one side of the scraper bar (401) is fixedly connected to a slider (405), and the outer wall of the slider (405) is slidably connected to the inner wall of the arc-shaped groove (302).

6. The fixture for laser cutting of automobile parts according to claim 5, characterized in that: A sliding plate (402) is fixedly connected to one side of the scraper strip (401), a sliding sleeve A (403) is slidably connected to the outer wall of the sliding plate (402), and a sliding sleeve B (404) is slidably connected to the outer wall of the sliding sleeve A (403).

7. The fixture for laser cutting of automobile parts according to claim 6 is characterized in that: One side of the sliding sleeve B (404) is fixedly connected to one side of the blade (312), and the sliding plate (402), the sliding sleeve A (403), and the sliding sleeve B (404) are used to cover and open the arc-shaped groove (302).

8. The fixture for laser cutting of automobile parts according to claim 7, characterized in that: The sliding plate (402), sliding sleeve A (403), and sliding sleeve B (404) are all arc-shaped plate structures, and the fixed plate (307) is a square plate structure.

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