A supporting and positioning composite linkage fixture device for automobiles

Abstract

The present invention relates to the technical field of automobile production, and specifically discloses a supporting and positioning composite linkage clamp device for automobiles, comprising: two ends of a sliding support are respectively slidably connected to a first guide rail mechanism and a second guide rail mechanism; a locking piece is provided on the bottom surface of the sliding support, and the locking piece is connected to a first telescopic cylinder; the top surface of the sliding support is connected to a first fixed support, the first fixed support is connected to a second fixed support, the bottom surface of the second fixed support is fixedly connected to a supporting positioning piece, and a second telescopic cylinder is installed on the surface of the second fixed support close to the supporting positioning piece; the output shaft of the second telescopic cylinder is connected to a third fixed support, the third fixed support is slidably connected to the first fixed support, the surface of the third fixed support is connected to a transmission piece, one end of the transmission piece is connected to a positioning mechanism, and the positioning mechanism and the supporting positioning piece are coaxially arranged. The device structure of the present invention has good linkage performance and compact structure, and can realize precise control of horizontal and vertical movement processes, thereby ensuring the positioning accuracy of the device and improving production efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile production, in particular to a supporting and positioning composite linkage clamp device for automobiles. Background Art

[0002] During the welding production process of automotive parts, especially security parts such as subframes and control arms, there will be a part that requires an auxiliary clamp mechanism for both positioning and supporting functions, and the auxiliary mechanism support and positioning are both movable, otherwise it will be impossible to remove the part after welding.

[0003] The auxiliary clamp mechanisms of the prior art are all simply equipped with a movable cylinder underneath for positioning and supporting. Although they can achieve positioning and supporting functions, the positioning and supporting processes are relatively independent. The auxiliary clamp mechanisms of the prior art have poor linkage between components, resulting in poor positioning accuracy and an inability to ensure stable positioning accuracy. This leads to a loss of positioning accuracy, which requires a lot of time to adjust the accuracy, greatly reducing production efficiency and increasing the number of defective products. Therefore, there is an urgent need for an auxiliary clamp mechanism with strong positioning and support linkage, which can ensure the accuracy and stability of the positioning and support process, to solve the problems existing in the prior art. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a supporting and positioning composite linkage clamp device for an automobile.

[0005] According to a first embodiment of the present invention, a supporting and positioning composite linkage fixture device for an automobile comprises:

[0006] Sliding support; the two ends of the sliding support are respectively fixedly connected to the first guide rail mechanism and the second guide rail mechanism; the bottom surface of the sliding support is provided with a locking member, and the locking member is connected to the first telescopic cylinder;

[0007] The top surface of the sliding support is fixedly connected to the first fixed support, the first fixed support is fixedly connected to the second fixed support, the bottom surface of the second fixed support is fixedly connected to a support positioning piece, and a second telescopic cylinder is fixedly installed on the surface of the second fixed support close to the support positioning piece; the output shaft of the second telescopic cylinder is fixedly connected to the third fixed support, the third fixed support is slidably connected to the first fixed support, the surface of the third fixed support is fixedly connected to a transmission piece, one end of the transmission piece is fixedly connected to a positioning mechanism, and the positioning mechanism is coaxially arranged with the support positioning piece.

[0008] The cam is fixedly mounted on the support frame and the second support frame is provided with a first end in contact with the support member, and the cam is fixedly mounted on the support frame, and the cam is fixedly mounted on the support frame.

[0009] According to some embodiments of the present invention, the first guide rail mechanism and the second guide rail mechanism are arranged in parallel, the first guide rail mechanism includes a first slide rail, the first slide rail is slidably connected to the first slider, the first slider is fixedly connected to one end of the sliding support, the second guide rail mechanism includes a second slide rail, the second slide rail is slidably connected to the second slider, and the second slider is fixedly connected to the other end of the sliding support; one end of the first slide rail is fixedly connected to the first protective frame, the surface of the first protective frame is fixedly connected to the first fixed guide block, the surface of the first fixed guide block is provided with a second buffer block, one end of the second slide rail is fixedly connected to the second protective frame, the surface of the second protective frame is fixedly connected to the second fixed guide block, and the surface of the second fixed guide block is provided with a third buffer block; the slide rail setting is movably connected by the slider, which ensures the stability of the sliding support during the movement process, and through the setting of the buffer block, when the slider drives the sliding support to move, the sliding support is prevented from directly contacting and colliding with the fixed guide block, thereby ensuring the structural stability of the device during operation.

[0010] According to some embodiments of the present invention, the first fixed support includes a lower base plate, an upper base plate and a vertical guide rail, the upper base plate is vertically arranged on the surface of the lower base plate, a first reinforcing rib is provided at a right angle between the lower base plate and the upper base plate, and the vertical guide rail is provided in parallel with the surface of the upper base plate away from the reinforcing rib; the vertical guide rail is slidably connected to a third slider, and the surface of the third slider is fixedly connected to the third fixed support; a buffer groove is provided at the bottom of the third fixed support, and a locking groove is provided at the bottom of the buffer groove, and the locking groove is fitted and connected to the output shaft of the second telescopic cylinder; by providing a vertical guide rail parallel to the back of the first fixed support, the vertical guide rail is slidably connected to the third slider, the surface of the third slider is fixedly connected to the third fixed support, and the bottom of the third fixed support is connected to the output shaft of the second telescopic cylinder. When the second telescopic cylinder is working, the third fixed support is moved in the vertical direction. The vertical guide rail and the slider are arranged to ensure the stability of the third fixed support in the vertical direction.

[0011] According to some embodiments of the present invention, the second fixed support includes a fixed plate, which is vertically installed on the surface of the upper substrate, and a second reinforcing rib is provided at a right angle between the fixed plate and the upper substrate; a guide hole is opened on the surface of the fixed plate, and a fourth buffer block is also provided on the surface of the fixed plate near the guide hole, and the fourth buffer block is opposite to the buffer groove; by providing the guide hole and the fourth buffer block on the surface of the fixed plate, the installation of the second telescopic cylinder is facilitated, and the fourth buffer block is provided to avoid direct collision and contact between the third fixed support and the fixed plate, thereby ensuring the structural reliability of the device.

[0012] According to some embodiments of the present invention, the positioning mechanism includes a connecting member and a positioning pin, the connecting member is fixedly connected to the positioning pin, the supporting positioning member includes a supporting portion, a positioning through hole is opened on the surface of the supporting portion, a sinking groove is provided on the surface of the supporting portion near the positioning through hole, a connecting hole is provided in the sinking groove, and the positioning pin is fixedly connected by the connecting member. When different requirements are met for automobile parts such as subframes and control arms during the welding production process, different models of positioning pins can be replaced.

[0013] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 2 is a schematic structural diagram of a supporting and positioning composite linkage fixture device for an automobile according to an embodiment of the present invention;

[0016] Figure 2 is a structural diagram of a sliding support and a guide rail mechanism according to an embodiment of the present invention;

[0017] Figure 3 is a schematic structural diagram of a first fixed support and a second fixed support according to an embodiment of the present invention;

[0018] Figure 4 is a schematic structural diagram of a third fixed support according to an embodiment of the present invention;

[0019] Figure 5 is a structural schematic diagram of a positioning mechanism according to an embodiment of the present invention;

[0020] Figure 6 2 is a schematic structural diagram of a supporting positioning member according to an embodiment of the present invention.

[0021] Reference numerals:

[0022] 100, first fixed support; 101, lower base plate; 102, upper base plate; 103, first reinforcing rib; 104, vertical guide rail; 105, avoidance groove;

[0023] 200, sliding support; 201, support plate; 202, locking member; 203, first buffer block; 210, first telescopic cylinder;

[0024] 300, first guide rail mechanism; 301, first slide rail; 302, first slider; 303, first protection frame; 304, first fixed guide block; 305, second buffer block;

[0025] 400, second guide rail mechanism; 401, second slide rail; 402, second slider; 403, second protection frame; 404, second fixed guide block; 405, third buffer block;

[0026] 500, second fixed support; 501, fixing plate; 502, guide hole; 503, fourth buffer block; 504, second reinforcing rib; 510, support positioning member; 511, supporting portion; 512, positioning through hole; 513, sinking groove; 514, connecting hole; 520, second telescopic cylinder;

[0027] 600, third fixed support; 601, first mounting portion; 602, second mounting portion; 603, locking groove; 604, mounting hole; 605, buffer groove; 610, third slider; 620, transmission member; 630, protective cover;

[0028] 700, positioning mechanism, 710, connecting member, 711, first connecting block, 712, second connecting block; 720, connecting shaft, 730, positioning pin. DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0030] It should be noted that when an element is referred to as being “fixed to” another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or there may be an intermediate element.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used in this specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0032] Example 1

[0033] See also Figure 1 This embodiment provides a composite linkage fixture device for supporting and positioning automobile parts, which is used to support and position automobile parts during the welding production process, including:

[0034] Sliding support 200; both ends of the sliding support 200 are fixedly connected to the first guide rail mechanism 300 and the second guide rail mechanism 400 respectively; a locking piece 202 is provided on the bottom surface of the sliding support 200, and the locking piece 202 is fitted and connected to the first telescopic cylinder 210; it should be noted that the first guide rail mechanism 300, the first telescopic cylinder 210 and the second guide rail mechanism 400 are pre-fixed on the work surface, and the front end of the output shaft of the first telescopic cylinder 210 is fitted and connected to the locking piece 202. The first telescopic cylinder 210 is arranged parallel to the first guide rail mechanism 300 and the second guide rail mechanism 400. When the first telescopic cylinder 210 works under the control of the air pump, it pushes the sliding support 200 to slide along the first guide rail mechanism 300 and the second guide rail mechanism 400;

[0035] The top surface of the sliding support 200 is fixedly connected to the first fixed support 100, and the first fixed support 100 is fixedly connected to the second fixed support 500. Specifically, the second fixed support 500 is perpendicular to the first fixed support 100, and a support positioning piece 510 is fixedly connected to the bottom surface of the second fixed support 500. A second telescopic cylinder 530 is fixedly installed on the bottom surface of the second fixed support 500 near the support positioning piece 510; the output shaft of the second telescopic cylinder 520 passes through the second fixed support 500 and is fixedly connected to the third fixed support 600, and the third fixed support 600 is slidably connected to the first fixed support 100. It should be noted that the third fixed support 600 is perpendicular to the second fixed support 500. When the first telescopic cylinder 210 works under the control of the air pump, it pushes the sliding support 200 to move vertically along the guide rail provided on the surface of the first fixed support 100;

[0036] The surface of the third fixed support 600 is fixedly connected to the transmission member 620. One end of the transmission member 620 is fixedly connected to the positioning mechanism 700. The positioning mechanism 700 is coaxially arranged with the support positioning member 510. Specifically, the support positioning member 510 is provided with a positioning through hole, and the positioning mechanism 700 is provided with a positioning pin. The positioning pin cooperates with the positioning through hole to achieve positioning.

[0037] The sliding support 200 is arranged between the first guide rail mechanism 300 and the second guide rail mechanism 400. The bottom surface of the sliding support 200 is connected to the first telescopic cylinder 210. When the first telescopic cylinder 210 is working, the sliding support 200 moves along the guide rail mechanism. The first fixed support 100 and the second fixed support 500 are arranged on the surface of the sliding support 200. The second telescopic cylinder 520 is arranged on the second fixed support 500. The first fixed support 100 is slidably connected to the third fixed support 600. The output shaft of the second telescopic cylinder 520 is connected to the third fixed support 600. When the second telescopic cylinder 520 is in operation, the first fixed support 100 is connected to the third fixed support 600. During operation, the third fixed support 600 is moved in the vertical direction. The third fixed support 600 is fixedly connected to the positioning mechanism 700. The support positioning member 510 is fixedly connected to the bottom surface of the second fixed support 200. The positioning mechanism 700 is located directly above the support positioning member 510. The positioning mechanism 700 cooperates with the support positioning member 510 to achieve precise positioning. During the welding production process of automobile parts such as subframes and control arms, the device of this embodiment has good linkage performance between components, and precise control of the horizontal and vertical movement processes is achieved, thereby ensuring the positioning accuracy of the device and improving production efficiency. The stability of the structure is guaranteed by the setting and connection of each support.

[0038] In some embodiments, the supporting and positioning composite linkage fixture device works as follows: when automobile parts are in the welding production process, especially the safety parts such as the subframe and the control arm need positioning support, First, the preset installation position of the support and positioning composite linkage clamp device of this embodiment is set on the welding platform, and the first guide rail mechanism 300 and the second guide rail mechanism 400 connected to the sliding support 200 are fixed to the welding platform by bolts. After the output shaft of the first telescopic cylinder 210 is fixedly connected to the locking member 202, the first telescopic cylinder 210 is fixed to the welding platform, and the first telescopic cylinder 210 and the second telescopic cylinder 530 are connected to the air source equipment. Through the preset cylinder stroke, the first telescopic cylinder 210 drives the sliding support 200 and the structure installed on the surface of the sliding support 200 to move horizontally, so that the support positioning member 510 is accurately aligned with the positioning hole opened in the automotive part to be welded, and then the second telescopic cylinder 530 drives the positioning mechanism 700 to move vertically, so that the positioning mechanism 700 passes through the positioning hole and the support positioning member 510 in sequence. At this time, the support positioning member 510 and the positioning mechanism 700 cooperate to complete the supporting and fixing function of the automotive part to be welded.

[0039] Example 2

[0040] See also Figure 2 This embodiment specifically describes the sliding support and guide rail mechanism based on the first embodiment, including:

[0041] The first guide rail mechanism 300 is arranged parallel to the second guide rail mechanism 400, and the first guide rail mechanism 300 includes a first slide rail 301, and the first slide rail 301 is vertically opened with a plurality of mounting connection holes. The first slide rail 301 is slidably connected to the first slider 302. It should be noted that the first slider 302 is sleeved on the surface of the first slide rail 301, so that the first slider 302 can only move along the direction of the first slide rail 301. One end of the first slide rail 301 is fixedly connected to the first protective frame 303, and the first protective frame 303 is used to protect the first slide rail 301. A first fixed guide block 304 is fixedly connected to the surface of the first protective frame 303. The first fixed guide block 304 is provided with a second buffer block 305 near the surface of the first slide rail 301. The end surface of the sliding support is provided with a first buffer block 203. The first buffer block 203 and the second buffer block 305 are coaxially arranged. The bottom of the first fixed guide block 304 is provided with a bolt hole for mounting to the welding table.

[0042] The second guide rail mechanism 400 includes a second slide rail 401, which is vertically provided with a plurality of mounting connection holes. The second slide rail 401 is slidably connected to the second slider 402. It should be noted that the second slider 402 is sleeved on the surface of the second slide rail 401, so that the second slider 402 can only move along the direction of the second slide rail 401. One end of the second slide rail 401 is fixedly connected to the second protective frame 403. The second protective frame 403 is used to protect the second slide rail 401. The surface of the second protective frame 403 is fixedly connected with a second fixed guide block 404. The second fixed guide block 404 is provided with a third buffer block 405 near the surface of the second slide rail 401. The end face of the sliding support is provided with a first buffer block 203. The first buffer block 203 and the third buffer block 405 are coaxially arranged. The bottom of the second fixed guide block 404 is provided with a bolt hole for mounting to the welding table.

[0043] The first slider 302 is movably connected to the first slide rail 301 and the second slider 402 is movably connected to the second slide rail 401, thereby ensuring the stability of the sliding support during the movement process. By setting the buffer block, when the slider drives the sliding support 200 to move, the sliding support 200 is prevented from directly contacting and colliding with the fixed guide block, thereby ensuring the structural stability of the device during operation.

[0044] Example 3

[0045] See also Figure 3 and Figure 4 This embodiment specifically describes the structures of the first fixed support and the second fixed support based on the first embodiment, including:

[0046] like Figure 3 As shown, the first fixed support 100 includes a lower base plate 101, an upper base plate 102 and a vertical guide rail 104. The upper base plate 102 is vertically arranged on the surface of the lower base plate 102. A first reinforcing rib 103 is provided at a right angle between the lower base plate 101 and the upper base plate 102. The vertical guide rail 104 is provided in parallel with the surface of the upper base plate 102 away from the reinforcing rib 103. A guide hole 502 is provided on the surface of the fixed plate 501. A fourth buffer block 503 is also provided on the surface of the fixed plate 501 near the guide hole 502. The fourth buffer block 503 is opposite to the buffer groove 605.

[0047] By setting the vertical guide rail 104 parallel to the back of the first fixed support 100, the vertical guide rail 104 is slidably connected to the third slider 610, the surface of the third slider 610 is fixedly connected to the third fixed support 600, and the bottom of the third fixed support 600 is connected to the output shaft of the second telescopic cylinder 520. When the second telescopic cylinder 520 is working, the third fixed support 600 is moved in the vertical direction. The vertical guide rail 104 and the slider are set to ensure the stability of the third fixed support 600 in the vertical direction.

[0048] In some embodiments, the vertical guide rail 104 is slidably connected to a third slider 610, and the surface of the third slider 610 is fixedly connected to a third fixed support 600. Figure 4 As shown, a buffer groove 605 is provided at the bottom of the third fixed support 600, and a locking groove 603 is provided at the bottom of the buffer groove 605. The locking groove 603 is fitted and connected to the output shaft of the second telescopic cylinder 520. A first mounting portion 601 and a second mounting portion 602 are respectively provided on the surface of the third fixed support 600 near the buffer groove 605, and a mounting hole 604 is provided in a vertical array at the intersection of the first mounting portion 601 and the buffer groove 605.

[0049] Example 4

[0050] See also Figure 5 and Figure 6 This embodiment specifically describes the positioning mechanism and the supporting positioning member structure based on the embodiment 1, including:

[0051] like Figure 5 As shown, the positioning mechanism 700 includes a connecting member 710 and a positioning pin 730, and the connecting member 710 is fixedly connected to the positioning pin 730; the connecting member 710 includes a first connecting block 711 and a second connecting block 712, the first connecting block 711 is fixedly arranged on the top surface of the second connecting block 712, and the first connecting block 711 is provided with bolt holes in a longitudinal array, and the bolt holes are used to be fixedly connected to the transmission member, the second connecting block 712 is cylindrical, and the second connecting block 712 is provided with a mounting through hole at the center axis, and the positioning pin 730 is fixedly connected to the bottom of the second connecting block 712. It should be noted that when the positioning apertures of the automotive parts to be welded are different in size, the positioning support during the welding process of different automotive parts can be achieved by replacing the model of the positioning pin 730.

[0052] like Figure 6As shown, the support positioning member 510 includes a support portion 511, and a positioning through hole 512 is provided on the surface of the support portion 511. In the device, the positioning through hole 512 is coaxially arranged with the positioning pin 730, and a sinking groove 513 is provided on the surface of the support portion 511 near the positioning through hole 512. A connecting hole 514 is provided in the sinking groove 513. The shape of the sinking groove 513 is similar to the bottom corner of the second fixed support 500. When the support positioning member 510 is installed on the second fixed support 500, the sinking groove 513 is aligned with the right-angled edge of the second fixed support 500. Through this arrangement, the connection between the support positioning member 510 and the second fixed support 500 is more firmly made, and the support positioning member 510 is more stable when supporting the welding process of automobile parts.

[0053] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation to the invention.

[0054] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0055] Obviously, the described embodiments are only some of the embodiments of the present application, rather than all of the embodiments. Mentioning "embodiment" in this article means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present embodiment application. The appearance of this phrase in various positions in the specification does not necessarily mean that they are all the same embodiments, nor are they independent or alternative embodiments that are mutually exclusive with other embodiments. It can be understood explicitly and implicitly by those skilled in the art that the embodiments described herein can be combined with other embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without making creative work are within the scope of protection of this application.

[0056] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A supporting and positioning composite linkage fixture device for automobiles, characterized in that: include: A sliding support (200), wherein both ends of the sliding support (200) are respectively slidably connected to a first guide rail mechanism (300) and a second guide rail mechanism (400), a locking member (202) is provided on a bottom surface of the sliding support (200), and the locking member (202) is connected to a first telescopic cylinder (210); The top surface of the sliding support (200) is fixedly connected to the first fixed support (100), the first fixed support (100) is fixedly connected to the second fixed support (500), the bottom surface of the second fixed support (500) is fixedly connected to a support positioning member (510), a second telescopic cylinder (520) is fixedly installed on the surface of the second fixed support (500) close to the support positioning member (510), the output shaft of the second telescopic cylinder (520) is fixedly connected to a third fixed support (600), the third fixed support (600) is slidably connected to the first fixed support (100), the surface of the third fixed support (600) is fixedly connected to a transmission member (620), one end of the transmission member (620) is fixedly connected to a positioning mechanism (700), and the positioning mechanism (700) is coaxially arranged with the support positioning member (510).

2. The automobile supporting and positioning composite linkage fixture device according to claim 1, characterized in that: The first guide rail mechanism (300) and the second guide rail mechanism (400) are arranged in parallel, the first guide rail mechanism (300) includes a first slide rail (301), the first slide rail (301) is slidably connected to a first slider (302), the first slider (302) is fixedly connected to one end of the sliding support (200), and the second guide rail mechanism (400) includes a second slide rail (401), the second slide rail (401) is slidably connected to the second slider (402), and the second slider (402) is fixedly connected to the other end of the sliding support (200).

3. The automobile supporting and positioning composite linkage fixture device according to claim 2, characterized in that: One end of the first slide rail (301) is fixedly connected to the first protection frame (303), a first fixed guide block (304) is fixedly connected to the surface of the first protection frame (303), and a second buffer block (305) is provided on the surface of the first fixed guide block (304); one end of the second slide rail (401) is fixedly connected to the second protection frame (403), a second fixed guide block (404) is fixedly connected to the surface of the second protection frame (403), and a third buffer block (405) is provided on the surface of the second fixed guide block (404).

4. The automobile supporting and positioning composite linkage fixture device according to claim 1, characterized in that: The first fixed support (100) comprises a lower base plate (101), an upper base plate (102) and a vertical guide rail (104); the upper base plate (102) is arranged perpendicularly to the surface of the lower base plate (101); a first reinforcing rib (103) is arranged at a right angle between the lower base plate (101) and the upper base plate (102); and the vertical guide rail (104) is arranged parallel to the surface of the upper base plate (102) facing away from the first reinforcing rib (103).

5. The automobile supporting and positioning composite linkage fixture device according to claim 4, characterized in that: The vertical guide rail (104) is slidably connected to a third slider (610), and the surface of the third slider (610) is fixedly connected to a third fixed support (600).

6. The automobile supporting and positioning composite linkage fixture device according to claim 5, characterized in that: A buffer groove (605) is provided at the bottom of the third fixed support (600), and a locking groove (603) is provided at the bottom of the buffer groove (605), and the locking groove (603) is connected to the output shaft of the second telescopic cylinder (520).

7. The automobile supporting and positioning composite linkage fixture device according to claim 1, characterized in that: The second fixed support (500) comprises a fixed plate (501), the fixed plate (501) being vertically mounted on the surface of the upper substrate (102), and a second reinforcing rib (504) being provided at a right angle between the fixed plate (501) and the upper substrate (102).

8. The automobile supporting and positioning composite linkage fixture device according to claim 7, characterized in that: A guide hole (502) is provided on the surface of the fixing plate (501), and a fourth buffer block (503) is also provided on the surface of the fixing plate (501) near the guide hole (502), and the fourth buffer block (503) faces the buffer groove (605).

9. The supporting and positioning composite linkage fixture device for automobiles according to claim 1, characterized in that: The positioning mechanism (700) comprises a connecting member (710) and a positioning pin (730), wherein the connecting member (710) is fixedly connected to the positioning pin (730).

10. The automobile supporting and positioning composite linkage fixture device according to claim 1, characterized in that: The support positioning member (510) comprises a support portion (511), a positioning through hole (512) is provided on the surface of the support portion (511), a sinking groove (513) is provided on the surface of the support portion (511) near the positioning through hole (512), and a connecting hole (514) is provided in the sinking groove (513).

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