One-time clamping and welding of efficient front subframe welding fixture

Abstract

The present invention relates to the field of automobile parts processing devices, specifically to a front subframe welding fixture that is efficient in one-time clamping and welding. An intermediate section integrated clamping device is provided so that the frame devices at the head and tail can be clamped all at once for unified welding, without the need to change the table, and without the need to open the welding once, adjust the added parts, and then weld again, making the clamping simple and convenient, and ensuring production efficiency. It includes a fixture table and a left fixture group, a right fixture group, and a central support group arranged on the fixture table. A plurality of fixture main support legs are arranged at the bottom of the fixture table to support the fixture table to stand on the ground, wherein: the left fixture group and the right fixture group have consistent structures and are arranged in mirror symmetry, including a front beam fixture, a front beam upper piece fixture, a bushing crimping fixture, a side beam middle crimping fixture, and a tail three-in-one fixture. The tail bushing clamp, the tail bushing clamp seat, the sleeve clamp, and the sub-bracket clamp are jointly arranged and each uses its own cylinder to move, so that the stress is concentrated, thereby overcoming the disadvantage that the stress of the lower butterfly plate structure is very large.

Description

Technical Field

[0001] The present invention relates to the field of automobile parts processing devices, and specifically to a front subframe welding fixture with high efficiency in one-time clamping and welding. Background Art

[0002] The welding process of automobile parts, especially frame parts, accounts for a considerable proportion, and most of the time in the welding process is spent on auxiliary and clamping work. The design of the welding fixture will not only directly affect the difficulty and accuracy of clamping, but also affect the difficulty and quality of welding. At present, most of the welding fixtures for automobile subframes on the market have complex structures, and the clamping devices are mostly manual devices. Even pneumatic clamping devices are mostly equipped with only one pneumatic cylinder. All welded parts need to be welded 1 or 1-3 (the parts to be welded and the parts before and after the welded parts). Therefore, the clamping process is not only cumbersome, but also inefficient, which has a great impact on production. Reliable devices to clamp and fix the front subframe are a problem that needs to be solved urgently by technical personnel in this field. Summary of the invention

[0003] The purpose of the design of the present invention is to provide a front sub-frame welding fixture with high efficiency of one-time clamping and welding that can overcome the shortcomings of the background technology. It is provided with an intermediate section integrated clamping device so that the frame devices at the head and tail can be clamped all at once for unified welding without the need to change the table or to open the welding once and then adjust and add parts before welding. This makes clamping simple and convenient and ensures production efficiency.

[0004] The present invention is realized through the following technical scheme: a front subframe welding fixture with high efficiency of one-time clamping and welding, including a fixture table and a left fixture group, a right fixture group, and a central support group arranged on the fixture table, a plurality of fixture main support legs are arranged at the bottom of the fixture table to support the fixture table to stand on the ground, wherein: the left fixture group and the right fixture group are arranged with consistent structures and mirror-symmetrically, including a front beam fixture, a front beam upper piece fixture, a bushing crimping fixture, a side beam middle crimping fixture, and a tail three-in-one fixture, an inner ladder groove is arranged on the left and right sides of the fixture table, a beam groove is arranged horizontally on the top, a front beam upper piece fixture is arranged obliquely downward on the left and right sides of the beam groove, a side beam middle crimping fixture is arranged in the inner ladder groove, an upper butterfly plate is formed on the fixture table between the inner ladder groove and the beam groove, and the lower end of the inner ladder groove cuts the fixture table into a trapezoid The lower butterfly plate is provided with a front beam clamp and a bushing crimping clamp on the upper butterfly plate, and a tail three-in-one clamp is provided on the lower butterfly plate; the tail three-in-one clamp comprises a tail bushing clamp, a tail bushing clamp seat, a sleeve clamp and a sub-bracket clamp, the bottom of the sleeve clamp extends and is inserted into the main support leg of the clamp, the tail bushing clamp seat, the sleeve clamp and the sub-bracket clamp are all provided on the pad at the bottom of the clamp, and the tail bushing clamp seat, the sleeve clamp and the sub-bracket clamp are provided with a pressure adjustment plate at the bottom of the clamp table to match the pad position, the pad is provided with a hole groove, and the clamp table below the hole groove is also opened, and at the corresponding position at the bottom of the clamp table, a sleeve clamp pressing cylinder is provided at the bottom of the tail bushing clamp seat, a sub-bracket pressing cylinder is provided at the bottom of the sub-bracket clamp, a sleeve clamp pressing cylinder is provided at the bottom of the tail bushing clamp, and a sleeve clamp bottom adjustment core rod and its bottom are provided.

[0005] As a preferred embodiment, the pressure-bearing adjustment plates are connected to each other by splicing sheets. Because the sleeve and spring plate of the tail beam are an integral part, the core purpose of the present invention is to solve the purpose of clamping and welding them together. When welding together, a high degree of synchronization is required. In order to achieve this high degree of synchronization, the position is adjusted together, so linkage is required, rather than adjusting the position height of each part separately.

[0006] Preferably, the tail bushing clamp, tail bushing clamp seat, sleeve clamp and auxiliary bracket clamp are arranged on the lower butterfly plate in the following positions: the auxiliary bracket clamp is arranged on the outermost edge of the lower butterfly plate, the sleeve clamp is arranged diagonally above the auxiliary bracket clamp, the auxiliary bracket clamp is arranged diagonally above the sleeve clamp, and the tail bushing clamp is arranged below the auxiliary bracket clamp.

[0007] As a preferred embodiment, the tail bushing clamp seat, sleeve clamp and auxiliary bracket clamp are arranged at least 35 degrees upward. Compared with the aforementioned square and angle arrangement, the tail beam is mainly italic, so the positions must be consistent for integrated adjustment and linkage.

[0008] By adopting the above-mentioned technical scheme, the beneficial effects of the present invention are as follows: the tail bushing clamp, the tail bushing clamp seat, the sleeve clamp and the auxiliary bracket clamp are jointly arranged and each uses its own cylinder to move, the load-bearing stress will be concentrated, and the disadvantage that the stress on the lower butterfly plate structure is very large, so that the edge is less likely to be stressed, and the stress after the main support leg of the clamp and the sleeve clamp are directly connected is transmitted to the load-bearing support leg, and the bottom pressure adjustment plate is used to connect all the clamps, so that even if the cylinders move separately, 1. the upper and lower clamp bodies are formed to thicken the thickness of the entire weighing plate; 2. the stress is concentrated to the central position as much as possible and the load is borne by the main support leg of the clamp, so that The pressure of the clamp pressing down on the top can be differentiated, so that although it is designed into the shape of a lower butterfly plate, it can still have a very high load-bearing capacity and the ability to disperse stress, which solves the problem that the tail beam needs 2-3 steps to be welded because of the need for stability. It can be clamped all at once and then welded after synchronous adjustment of the cylinder. The force borne by this kind of clamp can avoid the difference in the fixture table in the prior art, which causes the need for a very heavy fixture table, and because the main support legs of the fixture table are directly connected to the tail three-in-one fixture, the bearing capacity is very high, which completely avoids the limitation of the crimping force of the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 Overall picture.

[0010] Figure 2 Top view structural diagram.

[0011] Figure 3 Fixture table structure diagram.

[0012] Figure 4 Structural diagram of the tail three-in-one clamp.

[0013] Figure 5 Three-dimensional structural diagram of the tail three-in-one clamp.

[0014] Figure 6 Front view of the tail three-piece integrated clamp.

[0015] Figure 7 Rear view of the integrated clamp for the tail triplex.

[0016] Figure 8 Implementation effect diagram. DETAILED DESCRIPTION

[0017] The technical solution of the present invention is described in detail below by way of embodiments in combination with the accompanying drawings. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "inner" and "outer" refer to directions toward or away from the geometric center of the present invention or its specific components, respectively:

[0018] like Figure 1-5 As shown, a front subframe welding fixture with high efficiency of one-time clamping and welding comprises a fixture table (1) and a left fixture group (2), a right fixture group (3), and a central support group (4) arranged on the fixture table, and a plurality of fixture main support legs (101) are arranged at the bottom of the fixture table to support the fixture table to stand on the ground, wherein: the left fixture group (2) and the right fixture group (3) are arranged with consistent structures and are mirror-symmetrical, and comprise a front beam fixture (4a), a front beam upper plate fixture (5), a bushing crimping fixture (6), a side beam middle crimping fixture (7), and a tail three-in-one fixture (8);

[0019] The specific parts of the various fixtures mentioned above are universal, including the fixture and the bracket, as well as the front beam fixture (4a) of the cylinder body, the front beam upper plate fixture (5), the bushing crimping fixture (6), and the side beam middle crimping fixture (7). They are universal and can be installed and replaced according to the requirements of the welded automobile parts in actual production. The core is the structure of the tail three-in-one fixture (8) and the fixture table. The fixture table has two main structural features: 1. The beam groove and the inner ladder groove are specially set;

[0020] The fixture table is provided with an inner ladder groove (9) on each side, a beam groove (10) is transversely provided on the top, a front beam upper piece fixture is provided obliquely downwardly on the left and right sides of the beam groove, a side beam middle crimping tool is provided in the inner ladder groove, an upper butterfly plate (11) is formed on the fixture table between the inner ladder groove and the beam groove, and the fixture table is cut into a trapezoidal lower butterfly plate (12) at the lower end of the inner ladder groove, a front beam fixture and a bushing crimping fixture are provided on the upper butterfly plate, and a tail three-in-one fixture is provided on the lower butterfly plate;

[0021] The internal ladder groove and beam groove notch settings can be used to plan different fixture intervals, which match the shape of the subframe, so that workers can compare the placement position according to the shape of the fixture table when placing the subframe;

[0022] Another core is the main support leg of the clamp. The main support leg of the clamp is directly connected to the sleeve clamp of the tail three-in-one clamp, which is directly used to enhance the bearing capacity. When pressurized, the force can be very high, completely avoiding the limitation of the crimping force of the existing technology;

[0023] The tail three-in-one clamp comprises a tail bushing clamp (13), a tail bushing clamp seat (14), a sleeve clamp (15), and an auxiliary bracket clamp (16); the bottom of the sleeve clamp extends and is inserted into the main support leg (101) of the clamp; the tail bushing clamp seat (14), the sleeve clamp (15), and the auxiliary bracket clamp (16) are all arranged on a pad (17) at the bottom of the clamp; a pressure adjustment plate (18) is arranged at the bottom of the clamp table to match the pad position; a hole groove is arranged on the pad; a hole is also opened on the clamp table below the hole groove; a tail bushing clamp seat clamping cylinder (20) is arranged at the bottom of the tail bushing clamp seat (13) at a corresponding position at the bottom of the clamp table; an auxiliary bracket clamping cylinder (21) is arranged at the bottom (16) of the auxiliary bracket clamp; and a tail bushing clamp pressing cylinder (22) is arranged at the bottom of the tail bushing clamp.

[0024] In implementation: Figures 4 to 7 As shown, the tail bushing clamp (13), the tail bushing clamp seat (14), the sleeve clamp (15), and the auxiliary bracket clamp (16) are sequentially matched with the lower butterfly plate and arranged obliquely upward. Figure 3 It can be seen that the lower butterfly plate formed by the setting of the slot is a complete small area. It has to bear three clamps, and the three parts of the tail bushing, sleeve, and auxiliary bracket must be clamped and pressed on the three clamps to join it with the tail beam of the side beam. After the combination, welding is carried out. At this time, several problems must be faced, such as Figure 1 and 5 As shown, if the tail bushing clamp (13), the tail bushing clamp seat (14), the sleeve clamp (15), and the auxiliary bracket clamp (16) are separately arranged and each uses its own cylinder to move, the stress on this lower butterfly plate structure will be very large, and the edge will be less able to bear the force. However, after the main support leg of the clamp and the sleeve clamp are directly connected, and the pressure-bearing adjustment plate at the bottom is used to connect all the clamps, even if the cylinders move separately, they can 1. form a clamp body relationship between the upper and lower parts to thicken the thickness of the entire weighing plate; 2. Try to concentrate the stress in the central position and let the main support leg of the clamp bear the weight, so that the pressure of the clamp pressing down on the top can be differentiated, so that although it is designed in the shape of a lower butterfly plate, it can still have a very high load-bearing capacity and the ability to disperse stress.

[0025] As a preferred embodiment, the pressure-bearing adjustment plates are connected to each other by splicing pieces. Because the sleeve and spring plate of the tail beam are an integral part, the core purpose of the present invention is to solve the purpose of clamping and welding them together. When welding together, a high degree of synchronization is required. In order to achieve this high degree of synchronization, the position is adjusted together, so linkage is required, rather than adjusting the position height of each part separately.

[0026] The tail bushing clamp (13), the tail bushing clamp seat (14), the sleeve clamp (15), and the auxiliary bracket clamp (16) are arranged at the positions on the lower butterfly plate as follows: the auxiliary bracket clamp (16) is arranged at the outermost edge of the lower butterfly plate, the sleeve clamp (15) is arranged obliquely above the auxiliary bracket clamp, the auxiliary bracket clamp is arranged obliquely above the sleeve clamp (15), and the tail bushing clamp is arranged below the auxiliary bracket clamp.

[0027] Preferably, the tail bushing clamp seat (14), sleeve clamp (15), and auxiliary bracket clamp (16) are arranged at least 35 degrees upward. Compared with the aforementioned arrangement of square and angle, the tail beam is mainly italic, so the positions must be consistent for integrated adjustment and linkage.

[0028] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A front subframe welding fixture with high efficiency for one-time clamping and welding, comprising a fixture table (1) and a left fixture group (2), a right fixture group (3), and a central support group (4) arranged on the fixture table, a plurality of fixture main support legs (101) being arranged at the bottom of the fixture table to support the fixture table standing on the ground, and characterized in that: The left clamp group (2) and the right clamp group (3) are arranged in a mirror-symmetrical manner with the same structure, and include a front beam clamp (4a), a front beam upper plate clamp (5), a bushing crimping clamp (6), a side beam middle crimping fixture (7), and a tail three-in-one clamp (8). An inner ladder groove (9) is arranged on the left and right of the clamp table, and a beam groove (10) is arranged transversely on the top. A front beam upper plate clamp is arranged obliquely downward on the left and right sides of the beam groove, and a side beam middle crimping fixture is arranged in the inner ladder groove. The clamp table forms an upper butterfly plate (11) between the inner ladder groove and the beam groove. The lower end of the inner ladder groove is The fixture table is cut into a trapezoidal lower butterfly plate (12), the upper butterfly plate is provided with a front beam fixture and a bushing crimping fixture, and the lower butterfly plate is provided with a tail three-in-one fixture; the tail three-in-one fixture comprises a tail bushing clamp (13), a tail bushing clamp seat (14), a sleeve clamp (15), and an auxiliary bracket clamp (16), the bottom of the sleeve clamp extends and is inserted into the fixture main support leg (101), the tail bushing clamp seat (14), the sleeve clamp (15), and the auxiliary bracket clamp (16) are all arranged on a pad (17) at the bottom thereof, and the tail bushing clamp seat (14), the sleeve clamp (15), and the auxiliary bracket clamp (16) are matched with the pad position. The sleeve clamp (15) and the auxiliary bracket clamp (16) are both provided with a pressure adjustment plate (18) at the bottom of the clamp table, the backing plate is provided with a hole groove, and the clamp table below the hole groove is also opened. At the corresponding position at the bottom of the clamp table, the bottom of the tail bushing clamp seat is provided with a sleeve clamp pressure cylinder, the bottom of the auxiliary bracket clamp is provided with an auxiliary bracket pressure cylinder, the bottom of the tail bushing clamp is provided with a sleeve clamp pressure cylinder, and the bottom of the sleeve clamp is provided with a positioning core rod (19) and its bottom; The pressure-bearing adjustment plates are connected to each other by splicing pieces; the tail bushing clamp (13), the tail bushing clamp seat (14), the sleeve clamp (15), and the auxiliary bracket clamp (16) are arranged on the lower butterfly plate in the following positions: the auxiliary bracket clamp (16) is arranged at the outermost edge of the lower butterfly plate, the sleeve clamp (15) is arranged obliquely above the auxiliary bracket clamp, the auxiliary bracket clamp is arranged obliquely above the sleeve clamp (15), and the tail bushing clamp is arranged below the auxiliary bracket clamp.

2. The one-time clamping and welding efficient front subframe welding fixture according to claim 1 is characterized in that: The tail bushing clamp seat (14), the sleeve clamp (15), and the auxiliary bracket clamp (16) are arranged at an angle of at least 35 degrees upward.

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