Positioning and welding mechanism for automobile engine support

Abstract

The invention discloses an automobile engine support positioning and welding mechanism, and belongs to the technical field of automobile part welding equipment.The automobile engine support positioning and welding mechanism comprises two supporting frames, a connecting plate is fixedly connected to the rear end between the two supporting frames, and placing mechanisms are fixedly installed at the tops of the two supporting frames; a moving mechanism is installed at the front end of the connecting plate, a clamping mechanism is installed on the moving mechanism, and a support body is arranged between the two placing mechanisms and the clamping mechanism. By designing the welding assembly, during welding, under cooperation of a first gear and a second gear, an arc-shaped rack is not affected, the arc-shaped rack can rotate all the time, and a welding gun can conduct 360-degree welding on the contact point of the two support bodies; and the two contact points of the two support bodies can be welded at a time, operation is easy, and the welding efficiency is greatly improved.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile parts welding equipment, and in particular relates to a positioning welding mechanism for an automobile engine bracket. Background Art

[0002] An automobile engine is a device that converts the chemical energy of fuel into mechanical energy. It is usually used to drive a car. It uses the energy generated by fuel (such as gasoline, diesel or electricity in a battery) through an internal combustion process to push the piston, crankshaft and other components to move, thereby driving the wheels. The main types of engines include internal combustion engines (such as gasoline engines and diesel engines) and electric motors. Internal combustion engines generate power through combustion, while electric motors convert electrical energy into mechanical energy. However, the automobile engine bracket is a key structural component that supports the engine and fixes it to the vehicle chassis. Its function is to firmly fix the engine to the vehicle frame while allowing a certain amount of movement to absorb the vibration and torque when the engine is running. The automobile engine bracket is usually connected to other parts of the vehicle body (such as the suspension system, transmission system, etc.).

[0003] The existing automobile engine bracket is usually welded into a large bracket by two small brackets, which is convenient for connecting and supporting the automobile engine. However, when welding two small brackets, two contact points need to be welded. Usually, one of the contact points is welded by welding equipment first. After welding, it is turned over and the other contact point is welded to complete the entire welding process. However, this process is cumbersome to operate, and it cannot be welded in one go, so the efficiency is low. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the disadvantages of the prior art and provide a positioning welding mechanism for an automobile engine bracket.

[0005] The technical solution adopted to solve the above technical problems is: a positioning welding mechanism for an automobile engine bracket, comprising two support frames, a connecting plate is fixedly connected between the rear ends of the two support frames, and a placement mechanism is fixedly installed on the tops of the two support frames;

[0006] A moving mechanism is installed at the front end of the connecting plate, a clamping mechanism is installed on the moving mechanism, and a bracket body is provided between the two placing mechanisms and the clamping mechanism;

[0007] A fixing frame is fixedly connected to the front center of the connecting plate, two welding assemblies are installed at the front end of the fixing frame, and positioning mechanisms are installed on both sides of the two welding assemblies.

[0008] Furthermore, the placement mechanism includes a first slide rail fixedly connected to the top of the support frame, a slide plate is slidably connected to the first slide rail, a placement seat is fixedly connected to the top of the slide plate, and two springs are fixedly connected between an inner wall of one side of the first slide rail and the placement seat.

[0009] Through the above technical solution, when it is necessary to weld the two bracket bodies, the front end bottoms of the two bracket bodies are first placed on the corresponding placement seats, and the rear end bottoms are clamped by a clamping mechanism to achieve their positioning and fixation. When the two bracket bodies are moved, the two placement seats move on the corresponding first slide rails through the slides connected to them. After the welding is completed, when the entire bracket body is removed, the two placement seats are automatically reset by the connected springs, which is convenient for placing the next bracket body.

[0010] Furthermore, the moving mechanism includes a second slide rail fixedly connected to the front end of the connecting plate, two slides are slidably connected to the second slide rail, nut seats are fixedly connected to the front end centers of the two slides, a bidirectional screw is installed at the center of the second slide rail, and a first motor is fixedly installed on the outer wall of one side of the second slide rail.

[0011] Through the above technical solution, after the two bracket bodies are clamped, when butt welding is required, the first motor is started, and the first motor drives the bidirectional screw to rotate through the rotation of the output shaft, so that the rotation of the bidirectional screw drives the two nut seats to move, thereby driving the two second slide rails to move toward each other, thereby realizing the butt fitting of the two bracket bodies. At this time, the contact points of the two bracket bodies are welded through the welding assembly.

[0012] Furthermore, the bidirectional screw is spirally connected to two nut seats, and one end of the first motor output shaft is fixedly connected to one end of the bidirectional screw.

[0013] Through the above technical solution, after welding is completed, the bidirectional lead screw rotates in the opposite direction, so that the two slides are reset, which is convenient for welding the next bracket body and has high automation efficiency.

[0014] Furthermore, the clamping mechanism includes a first lower clamping seat fixedly connected to the bottom inner surface of the two slides, a first mounting frame fixedly connected to the top inner surface of the two slides, a first cylinder installed on the two first mounting frames, a first upper clamping seat fixedly connected to the bottom ends of the two first cylinder pistons, a second lower clamping seat fixedly connected to the front ends of the top outer surfaces of the two slides, a second mounting frame fixedly connected to the rear ends of the top outer surfaces of the two slides, a second cylinder installed on the two second mounting frames, and a second upper clamping seat fixedly connected to the bottom ends of the two second cylinder pistons.

[0015] Through the above technical solution, when the rear end bottoms of the two bracket bodies are placed on the corresponding first lower clamping seats and second lower clamping seats, the corresponding first cylinder and second cylinder are started, so that the piston pushes the connected first upper clamping seats and second upper clamping seats, so that the two first upper clamping seats are fitted with the corresponding first lower clamping seats, and the two second upper clamping seats are fitted with the corresponding second lower clamping seats, thereby achieving the clamping of the two bracket bodies, and the operation is simple.

[0016] Furthermore, in the assembled state, the two first upper clamping seats are fitted with the corresponding first lower clamping seats, and the two second upper clamping seats are fitted with the corresponding second lower clamping seats.

[0017] Through the above technical solution, the rear end of the bracket body is clamped by the first upper clamp seat and the first lower clamp seat, as well as the second upper clamp seat and the second lower clamp seat, and the front end of the bracket body is limited by the placement mechanism, so that the bracket body is clamped and fixed, so that the moving mechanism will not shake when moving it, which greatly improves the subsequent welding accuracy.

[0018] Furthermore, the welding assembly includes a fixed seat fixedly connected to the front end of the fixed frame, the front end of the fixed seat is fixedly connected to an arc frame, an inner wall of one side of the arc frame is fixedly connected to an arc guide rail, an arc slide is slidably connected in the arc guide rail, the other side of the arc slide is fixedly connected to an arc rack, the other side of the arc rack is fixedly connected to a mounting seat, a welding gun is fixedly installed on the mounting seat, a second motor is fixedly installed on the front bottom of the arc frame, the outer wall center of the second motor output shaft is fixedly connected to a first gear, a connecting ear is fixedly connected to the bottom end of one side of the arc frame, a rotating shaft is rotatably connected to the connecting ear, the outer wall center of the rotating shaft is fixedly connected to a second gear, one end of the outer wall of the second motor output shaft and one end of the outer wall of the rotating shaft are fixedly connected to a synchronous wheel, and a synchronous belt is sleeved between the two synchronous wheels.

[0019] Through the above technical solution, when the contact points of the two bracket bodies are in contact, the second motor is started, so that the second motor drives the first gear and the connected synchronous wheel to rotate through the output shaft, so that the first gear drives the arc-shaped rack to rotate, and the second gear drives the welding gun to rotate. With the cooperation of the synchronous belt, the two synchronous wheels rotate at the same time, driving the rotating shaft to rotate, so that the rotating shaft drives the second gear to rotate. When the notch of the arc-shaped rack is just turned to a position close to the first gear, the second gear rotates to drive the arc-shaped rack to rotate, so that the arc-shaped rack will not be affected, so that the arc-shaped rack can always rotate, so that the welding gun can perform 360-degree welding on the contact points of the two bracket bodies, and can weld the two contact points of the two bracket bodies at one time, which is simple to operate and greatly improves the welding efficiency.

[0020] Furthermore, the first gear and the second gear are both meshed with the arc-shaped rack.

[0021] Through the above technical solution, under the limitation of the arc-shaped slide bar and the arc-shaped guide rail, one end of the arc-shaped rack can always be stably inserted into the arc-shaped guide rail, so that the welding gun can rotate stably, which greatly improves the stability during welding.

[0022] Furthermore, the positioning mechanism includes a third mounting frame fixedly connected to one side of the arc frame, a third cylinder is fixedly mounted on the third mounting frame, and a positioning plate is fixedly connected to the top end of the third cylinder piston.

[0023] Through the above technical solution, before welding, the staff needs to place the two bracket bodies on the placement mechanism and the clamping mechanism so that the contact points of the two bracket bodies are fitted with the corresponding positioning plates to achieve the positioning effect, so that when the two bracket bodies are close to each other and fit together, the welding gun can just weld their contact points. After placing the two bracket bodies, start the corresponding third cylinder so that the third cylinder drives the positioning plate to contract through the piston, which facilitates the two bracket bodies to move toward each other and fit together. After welding, the two positioning plates are reset to facilitate the positioning of the next bracket body, which greatly improves the welding accuracy of the bracket body.

[0024] The beneficial effects of the present invention are as follows: (1) The present invention designs a welding assembly. During welding, with the cooperation of the first gear and the second gear, the arc-shaped rack will not be affected, so that the arc-shaped rack can always rotate, so that the welding gun can perform 360-degree welding on the contact points of the two bracket bodies, and can weld the two contact points of the two bracket bodies at one time, which is simple to operate and greatly improves the welding efficiency; (2) The present invention designs a placement mechanism, a moving mechanism and a clamping mechanism. It can clamp and fix the two bracket bodies at the same time, and automatically move and dock them, which is convenient for subsequent automatic welding. There is no need for manual operation by the staff, and the efficiency is high; (3) The present invention designs a positioning mechanism. Before clamping, it is convenient to position the two bracket bodies, thereby improving the clamping accuracy of the two bracket bodies and thus improving the subsequent welding accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a first-view appearance diagram of the present invention;

[0026] Figure 2 is a second viewing angle appearance diagram of the present invention;

[0027] Figure 3 It is a front view of the present invention;

[0028] Figure 4 It is a schematic diagram of the structure of the moving mechanism and the clamping mechanism of the present invention;

[0029] Figure 5 It is a schematic diagram of the welding mechanism and placement mechanism structure of the present invention;

[0030] Figure 6 It is an exploded view of the welding mechanism of the present invention;

[0031] Figure 7 for Figure 5 A partial enlarged view of point A in the middle.

[0032] Figure numerals: 1, support frame; 2, connecting plate; 3, placement mechanism; 301, first slide rail; 302, slide plate; 303, placement seat; 304, spring; 4, moving mechanism; 401, second slide rail; 402, slide frame; 403, nut seat; 404, two-way screw rod; 405, first motor; 5, clamping mechanism; 501, first lower clamping seat; 502, first mounting frame; 503, first cylinder; 504, first upper clamping seat; 505, second lower clamping seat; 506, second mounting frame; 507, second cylinder; 5 08. Second upper clamping seat; 6. Bracket body; 7. Fixing frame; 8. Welding assembly; 801. Fixing seat; 802. Arc frame; 803. Arc guide rail; 804. Arc slide bar; 805. Arc rack; 806. Mounting seat; 807. Welding gun; 808. Second motor; 809. First gear; 810. Connecting ear; 811. Rotating shaft; 812. Second gear; 813. Synchronous wheel; 814. Synchronous belt; 9. Positioning mechanism; 901. Third mounting frame; 902. Third cylinder; 903. Positioning plate. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0034] like Figure 1-Figure 3As shown, a positioning welding mechanism for an automobile engine bracket of the present embodiment comprises two support frames 1, a connecting plate 2 is fixedly connected at the rear ends of the two support frames 1, a placing mechanism 3 is fixedly installed on the tops of the two support frames 1, the placing mechanism 3 comprises a first slide rail 301 fixedly connected to the tops of the support frames 1, a slide plate 302 is slidably connected to the first slide rail 301, a placing seat 303 is fixedly connected to the tops of the slide plates 302, two springs 304 are fixedly connected between an inner wall of one side of the first slide rail 301 and the placing seat 303, when it is necessary to weld the two support bodies 6, the front end bottoms of the two support bodies 6 are first placed on the corresponding placing seats 303, and the rear end bottoms are then clamped by the clamping mechanism 5 to achieve their positioning and fixing, when the two support bodies 6 are moved, the two placing seats 303 move on the corresponding first slide rail 301 through the slide plates 302 connected thereto, after the welding is completed, when the entire support body 6 is removed, the two placing seats 303 are automatically reset by the connected springs 304, so as to facilitate the placement of the next support body 6.

[0035] like Figure 1-Figure 4 As shown, a moving mechanism 4 is installed at the front end of the connecting plate 2, and the moving mechanism 4 includes a second slide rail 401 fixedly connected to the front end of the connecting plate 2, two slides 402 are slidably connected to the second slide rail 401, and the front end centers of the two slides 402 are fixedly connected with nut seats 403, a bidirectional screw rod 404 is installed at the center of the second slide rail 401, and a first motor 405 is fixedly installed on the outer wall of one side of the second slide rail 401. After the two bracket bodies 6 are clamped, when butt welding is required, the first motor 405 is started, and the first motor 405 drives the bidirectional screw rod to rotate through the output shaft 404 rotates, causing the bidirectional screw rod 404 to rotate and drive the two nut seats 403 to move, thereby driving the two second slide rails 401 to move toward each other, realizing the docking and fitting of the two bracket bodies 6. At this time, the contact points of the two bracket bodies 6 are welded through the welding assembly 8, and the bidirectional screw rod 404 is spirally connected to the two nut seats 403, and one end of the output shaft of the first motor 405 is fixedly connected to one end of the bidirectional screw rod 404. After welding, the bidirectional screw rod 404 rotates in the opposite direction to reset the two slides 402, which is convenient for welding the next bracket body 6, and has high automation efficiency.

[0036] like Figure 1-Figure 4As shown, a clamping mechanism 5 is installed on the moving mechanism 4, and the clamping mechanism 5 includes a first lower clamping seat 501 fixedly connected to the bottom inner surface of the two slides 402, the top inner surfaces of the two slides 402 are fixedly connected to the first mounting frame 502, the two first mounting frames 502 are installed with a first cylinder 503, the bottom ends of the pistons of the two first cylinders 503 are fixedly connected to the first upper clamping seat 504, the front ends of the top outer surfaces of the two slides 402 are fixedly connected to the second lower clamping seat 505, the rear ends of the top outer surfaces of the two slides 402 are fixedly connected to the second mounting frame 506, the two second mounting frames 506 are installed with a second cylinder 507, and the bottom ends of the pistons of the two second cylinders 507 are fixedly connected to the second upper clamping seat 508. When the rear end bottoms of the two bracket bodies 6 are placed on the corresponding first lower clamping seat 501 and the second lower clamping seat 505, the corresponding first The cylinder 503 and the second cylinder 507 cause the piston to push the connected first upper clamp seat 504 and the second upper clamp seat 508, so that the two first upper clamp seats 504 are fitted with the corresponding first lower clamp seat 501, and the two second upper clamp seats 508 are fitted with the corresponding second lower clamp seat 505, thereby clamping the two bracket bodies 6. The operation is simple. In the combined state, the two first upper clamp seats 504 are fitted with the corresponding first lower clamp seat 501, and the two second upper clamp seats 508 are fitted with the corresponding second lower clamp seat 505. The rear end of the bracket body 6 is clamped by the first upper clamp seat 504 and the first lower clamp seat 501 and the second upper clamp seat 508 and the second lower clamp seat 505, and the front end of the bracket body 6 is limited by the placement mechanism 3, so that the bracket body 6 will not shake when the moving mechanism 4 moves it, which greatly improves the subsequent welding accuracy.

[0037] like Figure 1-Figure 7As shown, a bracket body 6 is provided between the two placement mechanisms 3 and the clamping mechanism 5, a fixing frame 7 is fixedly connected to the front end center of the connecting plate 2, two welding assemblies 8 are installed at the front end of the fixing frame 7, the welding assembly 8 includes a fixing seat 801 fixedly connected to the front end of the fixing frame 7, an arc frame 802 is fixedly connected to the front end of the fixing seat 801, an arc guide rail 803 is fixedly connected to the inner wall of one side of the arc frame 802, an arc slide bar 804 is slidably connected in the arc guide rail 803, an arc rack 805 is fixedly connected to the other side of the arc rack 805, and a mounting seat 806 is fixedly connected to the other side of the arc rack 805. A welding gun 807 is fixedly installed on 806, a second motor 808 is fixedly installed on the front bottom of the arc frame 802, a first gear 809 is fixedly connected to the center of the outer wall of the output shaft of the second motor 808, a connecting ear 810 is fixedly connected to the bottom end of one side of the arc frame 802, a rotating shaft 811 is rotatably connected to the connecting ear 810, a second gear 812 is fixedly connected to the center of the outer wall of the rotating shaft 811, a synchronous wheel 813 is fixedly connected to one end of the outer wall of the output shaft of the second motor 808 and one end of the outer wall of the rotating shaft 811, a synchronous belt 814 is sleeved between the two synchronous wheels 813, and when the contact points of the two bracket bodies 6 are fitted , start the second motor 808, so that the second motor 808 rotates through the output shaft to drive the first gear 809 and the connected synchronous wheel 813 to rotate, so that the first gear 809 drives the arc-shaped rack 805 to rotate, so that the second gear 812 drives the welding gun 807 to rotate, and under the cooperation of the synchronous belt 814, the two synchronous wheels 813 rotate at the same time, driving the rotating shaft 811 to rotate, so that the rotating shaft 811 drives the second gear 812 to rotate, when the notch of the arc-shaped rack 805 is just rotated to a position close to the first gear 809, at this time, the second gear 812 rotates to drive the arc-shaped rack 805 to rotate, so that the arc-shaped rack 807 rotates. The bar 805 will not be affected, so that the arc-shaped rack 805 can always rotate, so that the welding gun 807 can perform 360-degree welding on the contact points of the two bracket bodies 6, and can weld the two contact points of the two bracket bodies 6 at one time, which is simple to operate and greatly improves the welding efficiency. The first gear 809 and the second gear 812 are both engaged with the arc-shaped rack 805. Under the limitation of the arc-shaped slide bar 804 and the arc-shaped guide rail 803, one end of the arc-shaped rack 805 can always be stably inserted into the arc-shaped guide rail 803, so that the welding gun 807 can rotate stably, which greatly improves the stability during welding.

[0038] like Figure 1-Figure 5As shown, positioning mechanisms 9 are installed on both sides of the two welding assemblies 8, and the positioning mechanisms 9 include a third mounting frame 901 fixedly connected to one side of the arc frame 802, and a third cylinder 902 is fixedly installed on the third mounting frame 901, and a positioning plate 903 is fixedly connected to the top of the piston of the third cylinder 902. Before welding, the staff needs to place the two bracket bodies 6 on the placement mechanism 3 and the clamping mechanism 5, so that the contact points of the two bracket bodies 6 are fitted with the corresponding positioning plates 903 to achieve a positioning effect, so that when the two subsequent bracket bodies 6 are close to each other and fitted, the welding gun 807 can just weld their contact points. After placing the two bracket bodies 6, start the corresponding third cylinder 902, so that the third cylinder 902 drives the positioning plate 903 to contract through the piston, so that the two bracket bodies 6 are convenient to move toward each other and fit together. After welding, the two positioning plates 903 are reset, which is convenient for positioning the next bracket body 6, thereby greatly improving the welding accuracy of the bracket body 6.

[0039] The working principle of this embodiment is as follows. When it is necessary to weld the two bracket bodies 6, the front end bottoms of the two bracket bodies 6 are first placed on the corresponding placement seats 303, and the rear end bottoms thereof are placed on the corresponding first lower clamping seats 501 and second lower clamping seats 505, and the contact points of the two bracket bodies 6 are fitted with the corresponding positioning plates 903, and the corresponding first cylinders 503 and second cylinders 507 are started, so that the pistons push the connected first upper clamping seats 504 and second upper clamping seats 508, so that the two first upper clamping seats 504 are fitted with the corresponding first lower clamping seats 501, and the two second upper clamping seats 508 are fitted with the corresponding second lower clamping seats 505, thereby clamping the two bracket bodies 6;

[0040] When the two bracket bodies 6 are moved, the corresponding third cylinder 902 is started, so that the third cylinder 902 drives the positioning plate 903 to contract through the piston, and then the first motor 405 is started. The first motor 405 drives the bidirectional screw rod 404 to rotate through the output shaft, so that the bidirectional screw rod 404 rotates to drive the two nut seats 403 to move, thereby driving the two second slide rails 401 to move toward each other, so as to achieve the docking and fitting of the two bracket bodies 6;

[0041] When welding the two bracket bodies 6, the second motor 808 is started, so that the second motor 808 drives the first gear 809 and the connected synchronous wheel 813 to rotate through the output shaft, so that the first gear 809 drives the arc rack 805 to rotate, so that the second gear 812 drives the welding gun 807 to rotate, and with the cooperation of the synchronous belt 814, the two synchronous wheels 813 rotate at the same time, driving the rotating shaft 811 to rotate, so that the rotating shaft 811 drives the second gear 812 to rotate, when the notch of the arc rack 805 is just rotated to a position close to the first gear 809, the second gear 812 rotates to drive the arc rack 805 to rotate, so that the arc rack 805 will not be affected, so that the arc rack 805 can always rotate, so that the welding gun 807 can perform 360-degree welding on the contact points of the two bracket bodies 6;

[0042] After welding is completed, the two first upper clamping seats 504 and the two second upper clamping seats 508 are reset, and at the same time the arc-shaped rack 805 is reset to the initial position (the notch of the arc-shaped rack 805 is aligned with the notch of the arc-shaped frame 802), and the staff lifts the bracket body 6 upward to remove the bracket body 6 from the notch of the arc-shaped frame 802. At the same time, the moving mechanism 4 is reset, and the two placement seats 303 are automatically reset by the connected springs 304, which is convenient for placing and welding the next bracket body 6.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims

1. A positioning welding mechanism for an automobile engine bracket, comprising two support frames (1), characterized in that: A connecting plate (2) is fixedly connected at the rear end between the two support frames (1), and a placement mechanism (3) is fixedly installed at the top of the two support frames (1); A moving mechanism (4) is installed at the front end of the connecting plate (2), a clamping mechanism (5) is installed on the moving mechanism (4), and a bracket body (6) is provided between the two placement mechanisms (3) and the clamping mechanism (5); A fixing frame (7) is fixedly connected to the front center of the connecting plate (2), two welding assemblies (8) are installed at the front end of the fixing frame (7), and positioning mechanisms (9) are installed on both sides of the two welding assemblies (8).

2. The automobile engine bracket positioning welding mechanism according to claim 1, characterized in that: The placement mechanism (3) comprises a first slide rail (301) fixedly connected to the top of the support frame (1); a slide plate (302) is slidably connected to the first slide rail (301); a placement seat (303) is fixedly connected to the top of the slide plate (302); and two springs (304) are fixedly connected between an inner wall of one side of the first slide rail (301) and the placement seat (303).

3. The automobile engine bracket positioning welding mechanism according to claim 1, characterized in that: The moving mechanism (4) comprises a second slide rail (401) fixedly connected to the front end of the connecting plate (2); two slide racks (402) are slidably connected to the second slide rail (401); the front end centers of the two slide racks (402) are fixedly connected to a nut seat (403); a bidirectional screw rod (404) is installed at the center of the second slide rail (401); and a first motor (405) is fixedly installed on an outer wall of one side of the second slide rail (401).

4. The automobile engine bracket positioning welding mechanism according to claim 3, characterized in that: The bidirectional screw rod (404) is screw-connected to the two nut seats (403), and one end of the output shaft of the first motor (405) is fixedly connected to one end of the bidirectional screw rod (404).

5. The automobile engine bracket positioning welding mechanism according to claim 3, characterized in that: The clamping mechanism (5) comprises a first lower clamping seat (501) fixedly connected to the bottom inner surface of the two slides (402); the top inner surfaces of the two slides (402) are fixedly connected to the first mounting frame (502); the first cylinders (503) are installed on the two first mounting frames (502); the bottom ends of the pistons of the two first cylinders (503) are fixedly connected to the first upper clamping seat (504); the front ends of the top outer surfaces of the two slides (402) are fixedly connected to the second lower clamping seat (505); the rear ends of the top outer surfaces of the two slides (402) are fixedly connected to the second mounting frame (506); the second cylinders (507) are installed on the two second mounting frames (506); and the bottom ends of the pistons of the two second cylinders (507) are fixedly connected to the second upper clamping seat (508).

6. The automobile engine bracket positioning welding mechanism according to claim 5, characterized in that: In the assembled state, the two first upper clamping seats (504) are fitted with the corresponding first lower clamping seats (501), and the two second upper clamping seats (508) are fitted with the corresponding second lower clamping seats (505).

7. The automobile engine bracket positioning welding mechanism according to claim 1, characterized in that: The welding assembly (8) comprises a fixing seat (801) fixedly connected to the front end of the fixing frame (7); the front end of the fixing seat (801) is fixedly connected to an arc frame (802); an inner wall of one side of the arc frame (802) is fixedly connected to an arc guide rail (803); an arc slide bar (804) is slidably connected inside the arc guide rail (803); an arc rack (805) is fixedly connected to the other side of the arc slide bar (804); the other side of the arc rack (805) is fixedly connected to a mounting seat (806); a welding gun (807) is fixedly mounted on the mounting seat (806); the arc frame (802 ) is fixedly installed at the bottom of the front end of the second motor (808), the center of the outer wall of the output shaft of the second motor (808) is fixedly connected to the first gear (809), the bottom end of one side of the arc frame (802) is fixedly connected to a connecting ear (810), the connecting ear (810) is rotatably connected to a rotating shaft (811), the center of the outer wall of the rotating shaft (811) is fixedly connected to a second gear (812), one end of the outer wall of the output shaft of the second motor (808) and one end of the outer wall of the rotating shaft (811) are both fixedly connected to a synchronous wheel (813), and a synchronous belt (814) is sleeved between the two synchronous wheels (813).

8. The automobile engine bracket positioning welding mechanism according to claim 7, characterized in that: The first gear (809) and the second gear (812) are both meshed with the arc-shaped rack (805).

9. The automobile engine bracket positioning welding mechanism according to claim 7, characterized in that: The positioning mechanism (9) comprises a third mounting frame (901) fixedly connected to one side of the arc frame (802), a third cylinder (902) being fixedly mounted on the third mounting frame (901), and a positioning plate (903) being fixedly connected to the top end of the piston of the third cylinder (902).

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