Automobile anti-collision beam energy absorption box welding clamp

Abstract

The invention relates to the technical field of automobile part welding, and provides an automobile anti-collision beam energy-absorbing box welding fixture which is characterized in that a connecting longitudinal beam bottom plate of an anti-collision beam is placed on a supporting seat, the connecting longitudinal beam bottom plate is clamped through a front clamping mechanism and a rear clamping mechanism, an energy-absorbing box positioning unit is pushed forwards to the position above the connecting longitudinal beam bottom plate through a forward pushing mechanism, and the connecting longitudinal beam bottom plate is clamped through a rear clamping mechanism; a left energy-absorbing box and a right energy-absorbing box are placed in the two energy-absorbing box positioning units respectively, the left energy-absorbing box and the right energy-absorbing box are placed above the connecting longitudinal beam bottom plate, the energy-absorbing boxes are pressed on the connecting longitudinal beam bottom plate through the upper pressing mechanism, and therefore the left energy-absorbing box and the right energy-absorbing box can be fixed to the connecting longitudinal beam bottom plate. Due to the fact that one of the left energy absorption box and the right energy absorption box is provided with a hole, the left and right piece mistake-proof mechanism is arranged on one supporting seat and is inserted into the hole of the energy absorption box to achieve mistake proofing.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile parts welding, in particular to a welding fixture for an automobile anti-collision beam energy absorption box. Background Art

[0002] As a core component of the global energy transition and automotive industry upgrade, new energy vehicles are gradually reshaping the transportation sector's technological landscape and market ecosystem. As lightweight and intelligent vehicles become a new technological trend in the global automotive industry, aluminum alloy, with its superior properties such as light weight, high strength, easy formability, ease of processing, and corrosion resistance, is playing a crucial role in replacing traditional iron parts in this lightweighting process. The primary function of an automotive anti-collision beam is to absorb collision energy during a collision, protecting the vehicle body and passengers. Aluminum alloy's excellent mechanical properties have led an increasing number of OEMs to choose aluminum alloy for front and rear anti-collision beams. Anti-collision beams are designed to absorb collision energy and consist of a main beam, an energy-absorbing box, and a mounting plate connecting the vehicle's longitudinal beams. These components effectively absorb energy in low-speed collisions, minimizing damage to the longitudinal beams and thus fulfilling their protective role. At present, the anti-collision beams of automobiles on the market are mainly welded by the anti-collision beam body, left and right energy absorption boxes, and the connecting longitudinal beam bottom plate. The energy absorption boxes and the connecting longitudinal beam bottom plate need to be welded first. At present, for the welding of the left and right energy absorption boxes and the connecting longitudinal beam bottom plate, the left and right energy absorption boxes need to be welded at the same time, and the positioning of the energy absorption boxes cannot be accurately positioned. One of the left and right energy absorption boxes has a hole, which can be used to prevent wrong placement. The positioning mechanism and the clamping mechanism need to cooperate together for positioning and clamping. The positioning mechanism is easy to block subsequent operations after welding is completed, so it is very important to solve the above problems. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide a welding fixture for an automobile anti-collision beam energy absorption box, which solves the problems in the background technology.

[0004] Based on the above purpose, the present invention provides a welding fixture for the energy absorption box of an automobile anti-collision beam, comprising a BASE plate, two symmetrical support seats are arranged on the left and right sides at the rear of the top of the BASE plate, a front clamping mechanism is arranged on the front side of each support seat at the top of the BASE plate, and a rear clamping mechanism is arranged on the bottom of each support seat at the top of the BASE plate; a side frame is arranged on the side away from each other of the two support seats, an upper pressing mechanism is arranged on the top of the side frame, a forward pushing mechanism is arranged on the side of the side frame below the upper pressing mechanism, and the front output end of the forward pushing mechanism An energy absorption box positioning unit is provided, and the energy absorption box positioning unit is in the shape of a door frame with an open end, and the energy absorption box positioning unit cooperates with the upper clamping mechanism to achieve positioning and clamping; a left and right parts anti-misalignment mechanism is provided on the side of one of the support seats; the aluminum alloy connecting longitudinal beam bottom plate of the automobile anti-collision beam is positioned and placed on the left and right symmetrical support seats, and the connecting longitudinal beam bottom plate is clamped by the front clamping mechanism and the rear clamping mechanism, and the front pushing mechanism pushes the energy absorption box positioning unit to the connecting longitudinal beam bottom plate, and the energy absorption box is placed into the energy absorption box positioning unit, and the energy absorption box is pressed by the upper clamping mechanism.

[0005] Preferably, the front clamping mechanism includes a front bracket arranged on the top of the BASE plate, a front clamping cylinder is arranged on the front side of the front bracket, the top output end of the front clamping cylinder is rotatably connected to the side of the support seat with a front clamping arm, the front clamping arm is rotatably connected to the top of the front bracket, and the front clamping arm rotates around the top of the front bracket to realize lever-type clamping.

[0006] Preferably, the rear clamping mechanism includes a rear bracket arranged on the top of the BASE plate and located on the rear side of the support seat, a rear clamping cylinder is arranged on the side of the rear bracket, the rear output end of the rear clamping cylinder is rotatably connected to the rear clamping arm, the rear clamping arm is rotatably connected to the side of the rear bracket, and the rear clamping arm rotates around the side of the rear bracket to realize lever-type clamping.

[0007] Preferably, the ends of the front clamping arm and the rear clamping arm are in the shape of fingers to press the connecting longitudinal beam bottom plate of the automobile anti-collision beam onto the support seat.

[0008] Preferably, the upper clamping mechanism includes an upper clamping cylinder arranged on the top of the side frame, the front output end of the upper clamping cylinder is rotatably connected to an upper clamping arm, the upper clamping arm is rotatably connected to the top of the side frame, and the upper clamping arm rotates around the top of the side frame to realize lever-type clamping.

[0009] Preferably, the upper pressing arm includes a pressing portion in the shape of an annular frame, and a pressing head matching the shape of the energy absorption box is distributed at the bottom of the pressing portion.

[0010] Preferably, the forward pushing mechanism includes a forward pushing cylinder arranged on the side of the side frame, the front output end of the forward pushing cylinder is connected to the forward pushing arm, the front end of the forward pushing arm is connected to the energy absorption box positioning unit, and the bottom of the clamping part is located at the door-shaped opening of the energy absorption box positioning unit and is provided with a plug blocking the door-shaped opening; the side of the side frame is provided with a guide rail for guiding the forward pushing arm, and the side of the forward pushing arm is provided with a slider matching the guide rail.

[0011] Preferably, the left and right parts anti-error mechanism includes a side frame arranged on the side of the top end of one of the support seats, an anti-error cylinder is arranged on the side of the side frame, and an anti-error pin is connected to the side output end of the anti-error cylinder. The anti-error pin moves laterally toward the support seat and extends into the hole of the energy absorption box to prevent errors.

[0012] Preferably, there is a distance between the energy absorption box positioning unit and the left and right parts of the connecting longitudinal beam bottom plate of the automobile anti-collision beam placed on the support seat, and the anti-error pin is located at the distance.

[0013] Preferably, anti-leakage sensors are provided on both the support seat and the energy absorption box positioning unit.

[0014] The beneficial effects of the present invention are as follows: the present invention places the connecting longitudinal beam bottom plate of the anti-collision beam on the support seat, clamps the connecting longitudinal beam bottom plate by a front clamping mechanism and a rear clamping mechanism, pushes the energy absorption box positioning unit forward to the top of the connecting longitudinal beam bottom plate by a forward pushing mechanism, places the left and right energy absorption boxes into the two energy absorption box positioning units respectively, places the left and right energy absorption boxes above the connecting longitudinal beam bottom plate, and presses the energy absorption boxes against the connecting longitudinal beam bottom plate by an upper pressing mechanism, thereby achieving the fixation of the left and right energy absorption boxes to the connecting longitudinal beam bottom plate. Since one of the left and right energy absorption boxes has a hole, error prevention is achieved by providing a left and right component anti-mistake mechanism on one of the support seats to insert the left and right component into the hole of the energy absorption box.

[0015] The front clamping mechanism presses the front end of the connecting longitudinal beam base plate to the top of the support seat through the front clamping cylinder with the end of the front clamping arm. The rear clamping mechanism presses the front end of the connecting longitudinal beam base plate to the top of the support seat through the rear clamping cylinder with the end of the rear clamping arm. The ends of the front clamping arm and the rear clamping arm press the workpiece in a finger shape, thereby achieving stable clamping of the connecting longitudinal beam base plate.

[0016] The forward push mechanism uses a forward push cylinder to drive the forward push arm forward, allowing the energy absorption box positioning unit to move above the bottom plate of the connecting longitudinal beam. The energy absorption box positioning unit is in the shape of a door with one end open, so that the energy absorption box positioning unit can return to its original position after welding is completed without affecting subsequent operations. The upper clamping mechanism uses an upper clamping cylinder to drive the upper clamping arm to compress the energy absorption box. The clamping head of the clamping part at the bottom of the upper clamping arm compresses the energy absorption box, while the door-shaped opening of the energy absorption box positioning unit is blocked by the clamping part's plug. This achieves positioning and limiting of the energy absorption box on all sides, ensuring the stability of the energy absorption box.

[0017] The left and right parts error prevention mechanism uses an error prevention cylinder to drive an error prevention pin into the hole of one of the energy absorption boxes. Since the other energy absorption box has no hole, error prevention is achieved. In addition, an anti-leakage sensor is also provided to provide a reminder of missing parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 It is an overall schematic diagram of the present invention; Figure 2 It is a schematic diagram of the left half of the present invention from a front side perspective; Figure 3 It is a rear side perspective diagram of the left half of the present invention.

[0020] The following are marked in the figure: 1-BASE plate, 2-support base, 3-side frame, 4-energy absorption box positioning unit, 5-front bracket, 6-front clamping cylinder, 7-front clamping arm, 8-rear bracket, 9-rear clamping cylinder, 10-rear clamping arm, 11-upper clamping cylinder, 12-upper clamping arm, 13-forward push cylinder, 14-forward push arm, 15-side frame, 16-anti-error cylinder, 17-anti-error pin, 18-anti-leakage sensor, 19-clamping part, 20-clamping head, 21-plug. DETAILED DESCRIPTION

[0021] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to specific embodiments.

[0022] It should be noted that, unless otherwise defined, the technical or scientific terms used in the present invention should have the usual meanings understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0023] like Figures 1 to 3 As shown, a welding fixture for an energy absorption box of an automobile anti-collision beam includes a base plate 1. Two symmetrical support seats 2 are arranged on the left and right at the rear of the top of the base plate 1. A front clamping mechanism is arranged on the top of the base plate 1 in front of each support seat 2, and a rear clamping mechanism is arranged on the top of the base plate 1 below each support seat 2; a side frame 3 is arranged on the side away from each other of the two support seats 2, an upper clamping mechanism is arranged on the top of the side of the side frame 3, a forward pushing mechanism is arranged on the side of the side frame 3 below the upper clamping mechanism, and a forward pushing mechanism is arranged on the front output end of the forward pushing mechanism. The energy absorption box positioning unit 4 is in the shape of a door frame with one end open. The energy absorption box positioning unit 4 cooperates with the upper clamping mechanism to achieve positioning and clamping; a left and right anti-misalignment mechanism is set on the side of one of the support seats 2; the aluminum alloy connecting longitudinal beam bottom plate of the automobile anti-collision beam is positioned on the left and right symmetrical support seats 2, and the connecting longitudinal beam bottom plate is clamped by the front clamping mechanism and the rear clamping mechanism. The front pushing mechanism pushes the energy absorption box positioning unit 4 to the connecting longitudinal beam bottom plate, puts the energy absorption box into the energy absorption box positioning unit 4, and presses the energy absorption box by the upper clamping mechanism. The left and right energy absorption boxes are fixed to the longitudinal beam bottom plate by placing the connecting longitudinal beam bottom plate of the anti-collision beam on the support base 2, clamping the connecting longitudinal beam bottom plate with the front clamping mechanism and the rear clamping mechanism, pushing the energy absorption box positioning unit forward to the top of the connecting longitudinal beam bottom plate with the forward pushing mechanism, and respectively placing the left and right energy absorption boxes into the two energy absorption box positioning units 4. The left and right energy absorption boxes are placed above the connecting longitudinal beam bottom plate, and the energy absorption boxes are pressed against the connecting longitudinal beam bottom plate with the upper pressing mechanism. Since one of the left and right energy absorption boxes has a hole, error prevention is achieved by providing a left and right component anti-misalignment mechanism on one of the support bases to insert the left and right component into the hole of the energy absorption box.

[0024] The front clamping mechanism includes a front bracket 5 mounted on top of the base plate 1. A front clamping cylinder 6 is mounted on the front side of the front bracket 5. The top output end of the front clamping cylinder 6 is pivotally connected to a front clamping arm 7 toward the support base 2. The front clamping arm 7 is pivotally connected to the top of the front bracket 5 and rotates around the top of the front bracket 5 to achieve lever-type clamping. The rear clamping mechanism includes a rear bracket 8 mounted on top of the base plate 1 and behind the support base 2. A rear clamping cylinder 9 is mounted on the side of the rear bracket 8. The rear output end of the rear clamping cylinder 9 is pivotally connected to a rear clamping arm 10. The rear clamping arm 10 is pivotally connected to the side of the rear bracket 8 and rotates around the side of the rear bracket 8 to achieve lever-type clamping. The ends of the front clamping arm 7 and the rear clamping arm 10 are finger-shaped, pressing the bottom plate of the connecting longitudinal beam of the vehicle's anti-collision beam against the support base 2. The front clamping mechanism presses the front end of the connecting longitudinal beam base plate to the top of the support seat 2 through the front clamping cylinder 6 with the end of the front clamping arm 7, and the rear clamping mechanism presses the front end of the connecting longitudinal beam base plate to the top of the support seat 2 through the rear clamping cylinder 9 with the end of the rear clamping arm 10. The ends of the front clamping arm 7 and the rear clamping arm 10 press the workpiece in a finger shape, thereby achieving stable clamping of the connecting longitudinal beam base plate.

[0025] The upper clamping mechanism includes an upper clamping cylinder 11 arranged on the top of the side frame 3, and the upper clamping arm 12 is rotatably connected to the front output end of the upper clamping cylinder 11. The upper clamping arm 12 is rotatably connected to the top of the side frame 3, and the upper clamping arm 12 rotates around the top of the side frame 3 to achieve lever-type clamping. The upper clamping arm 12 includes a clamping portion 19 in the shape of an annular frame, and a clamping head 20 matching the shape of the energy absorption box is distributed at the bottom of the clamping portion 19. The forward pushing mechanism includes a forward pushing cylinder 13 arranged on the side of the side frame 3, and the front output end of the forward pushing cylinder 13 is connected to the forward pushing arm 14. The front end of the forward pushing arm 14 is connected to the energy absorption box positioning unit 4, and the bottom of the clamping portion 19 is located at the door-shaped opening of the energy absorption box positioning unit 4 and is provided with a plug 21 for blocking the door-shaped opening; the side of the side frame 3 is provided with a guide rail for guiding the forward pushing arm 14, and the side of the forward pushing arm 14 is provided with a slider matching the guide rail. The upper clamping mechanism compresses the energy absorbing box by driving the upper clamping arm 12 through the upper clamping cylinder 11. The clamping head 20 of the clamping portion 19 at the bottom of the upper clamping arm 12 compresses the energy absorbing box, while the door-shaped opening of the energy absorbing box positioning unit 4 is blocked by the plug 21 of the clamping portion. This achieves positioning and limiting of the energy absorbing box on all sides, ensuring the stability of the energy absorbing box. The forward pushing mechanism drives the forward pushing arm 14 forward through the forward pushing cylinder 13, so that the energy absorbing box positioning unit 7 moves to the top of the connecting longitudinal beam bottom plate. The energy absorbing box positioning unit 4 is in the shape of a door with one end open. In this way, the energy absorbing box positioning unit 4 can return to its original position after welding is completed without affecting subsequent operations.

[0026] The left and right piece error prevention mechanism comprises a side frame 15 arranged at the top side of one of the support seats 2, an error prevention cylinder 16 arranged at the side of the side frame 15, an error prevention pin 17 connected to the output end of the error prevention cylinder 16, and the error prevention pin 17 moving transversely to the support seat 2 and extending into the hole of the energy absorption box for error prevention. The energy absorption box positioning unit 4 is spaced from the left and right pieces of the connecting longitudinal beam bottom plate of the automobile impact beam placed on the support seat 2, and the error prevention pin 17 is located at the spacing. The left and right piece error prevention mechanism drives the error prevention pin 17 to extend into the hole of one of the energy absorption boxes through the error prevention cylinder 16, and since the other energy absorption box does not have a hole, the error prevention cylinder 16 is linked to a controller, and if the error prevention pin 17 cannot be pushed out by the error prevention cylinder 16, the controller receives a signal to alarm.

[0027] The support seat 2 and the energy absorption box positioning unit 4 are both provided with a leak prevention sensor 18 to realize part missing reminding, and the leak prevention sensor 18 is linked to a controller, and if the leak prevention sensor 18 does not sense the part, the controller senses a signal to alarm.

[0028] It should be understood by those skilled in the art that the above discussion of any embodiment is only exemplary and is not intended to imply that the scope of the present application is limited to these examples; under the idea of the present application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes of different aspects of the present application as described above. In order to be brief, they are not provided in details. Any omission, modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A welding fixture for an automobile anti-collision beam energy absorption box, comprising a BASE plate (1), characterized in that: Two symmetrical support seats (2) are arranged at the rear of the top of the BASE plate (1). A front clamping mechanism is arranged at the front side of each support seat (2) at the top of the BASE plate (1). A rear clamping mechanism is arranged at the bottom of each support seat (2). A side frame (3) is arranged on the side away from each other of the two support seats (2). An upper pressing mechanism is arranged at the top of the side of the side frame (3). A forward pushing mechanism is arranged at the side of the side frame (3) below the upper pressing mechanism. An energy absorption box positioning unit (4) is arranged at the front output end of the forward pushing mechanism. The energy absorption box positioning unit (4) is in the shape of a door frame with one end open, and the energy absorption box positioning unit (4) cooperates with the upper pressing mechanism to realize positioning and clamping; a left and right anti-misalignment mechanism is provided on the side of one of the support seats (2); an aluminum alloy connecting longitudinal beam bottom plate of the automobile anti-collision beam is positioned and placed on the left and right symmetrical support seats (2), and the connecting longitudinal beam bottom plate is clamped by the front clamping mechanism and the rear clamping mechanism, and the front pushing mechanism pushes the energy absorption box positioning unit (4) to the connecting longitudinal beam bottom plate, and the energy absorption box is placed into the energy absorption box positioning unit (4), and the energy absorption box is pressed by the upper pressing mechanism.

2. The automobile anti-collision beam energy absorption box welding fixture according to claim 1 is characterized in that: The front clamping mechanism includes a front bracket (5) arranged on the top of the BASE plate (1), a front clamping cylinder (6) is arranged on the front side of the front bracket (5), the top output end of the front clamping cylinder (6) is rotatably connected to the side of the support seat (2) and is connected to the front clamping arm (7), the front clamping arm (7) is rotatably connected to the top of the front bracket (5), and the front clamping arm (7) rotates around the top of the front bracket (5) to realize lever-type clamping.

3. The automobile anti-collision beam energy absorption box welding fixture according to claim 2 is characterized in that: The rear clamping mechanism includes a rear bracket (8) arranged on the top of the BASE plate (1) and located on the rear side of the support seat (2), a rear clamping cylinder (9) is arranged on the side of the rear bracket (8), and the rear output end of the rear clamping cylinder (9) is rotatably connected to the rear clamping arm (10), and the rear clamping arm (10) is rotatably connected to the side of the rear bracket (8). The rear clamping arm (10) rotates around the side of the rear bracket (8) to realize lever-type clamping.

4. The automobile anti-collision beam energy absorption box welding fixture according to claim 3 is characterized in that: The ends of the front clamping arm (7) and the rear clamping arm (10) are in the shape of fingers and press the connecting longitudinal beam bottom plate of the automobile anti-collision beam onto the support seat (2).

5. The automobile anti-collision beam energy absorption box welding fixture according to claim 1 is characterized in that: The upper clamping mechanism comprises an upper clamping cylinder (11) arranged on the top of the side frame (3); the front output end of the upper clamping cylinder (11) is rotatably connected to an upper clamping arm (12); the upper clamping arm (12) is rotatably connected to the top of the side frame (3); and the upper clamping arm (12) rotates around the top of the side frame (3) to achieve lever-type clamping.

6. The automobile anti-collision beam energy absorption box welding fixture according to claim 5 is characterized in that: The upper clamping arm (12) includes a clamping portion (19) in the shape of an annular frame, and a clamping head (20) matching the shape of the energy absorption box is distributed at the bottom of the clamping portion (19).

7. The automobile anti-collision beam energy absorption box welding fixture according to claim 6, characterized in that: The forward pushing mechanism includes a forward pushing cylinder (13) arranged on the side of the side frame (3), the front output end of the forward pushing cylinder (13) is connected to the forward pushing arm (14), the front end of the forward pushing arm (14) is connected to the energy absorption box positioning unit (4), and the bottom of the pressing part (19) is located at the door-shaped opening of the energy absorption box positioning unit (4) and is provided with a plug (21) for blocking the door-shaped opening; the side of the side frame (3) is provided with a guide rail for guiding the forward pushing arm (14), and the side of the forward pushing arm (14) is provided with a slider matching the guide rail.

8. The automobile anti-collision beam energy absorption box welding fixture according to claim 7 is characterized in that: The left and right parts anti-error mechanism comprises a side frame (15) arranged on the side of the top end of one of the support seats (2), an anti-error cylinder (16) is arranged on the side of the side frame (15), and an anti-error pin (17) is connected to the side output end of the anti-error cylinder (16), and the anti-error pin (17) moves laterally toward the support seat (2) and extends into the hole of the energy absorption box to prevent errors.

9. The automobile anti-collision beam energy absorption box welding fixture according to claim 8, characterized in that: There is a distance between the energy absorption box positioning unit (4) and the left and right parts of the connecting longitudinal beam bottom plate of the automobile anti-collision beam placed on the support seat (2), and the anti-error pin (17) is located at the distance.

10. The automobile anti-collision beam energy absorption box welding fixture according to claim 1, characterized in that: Anti-leakage sensors (18) are provided on both the support seat (2) and the energy absorption box positioning unit (4).

Images