An automobile body-in-white roof positioning tool

Abstract

The utility model discloses a kind of automobile body-in-white roof positioning tool, it is related to automobile manufacturing technical field, including installation bottom plate, support base, drive structure, transmission structure and adsorption structure.Support base is fixed to installation bottom plate, drive structure is driven transmission structure to realize plane position adjustment by driving device, transmission structure utilizes damping rotation characteristic to ensure that adjustment is stable, and adsorption structure is completed by electromagnetic control and mechanical self-adapting design adsorption and release of roof.The tool does not need external negative pressure device, controls the negative pressure in suction cup by the magnetic force action of electromagnetic block and magnetic attraction block, and the angle self-adapting is realized by the universal rotation of cooperation connection ball shaft, can quickly adapt the positioning demand of different curved surface roof, improves assembly efficiency and accuracy.

Description

Technical Field

[0001] This utility model relates to the field of automobile manufacturing technology, and more specifically, to a positioning fixture for the roof of an automobile body-in-white. Background Technology

[0002] As a key component of the vehicle body structure, the assembly precision of the car body roof directly affects the overall vehicle's appearance flatness, sealing performance, and structural strength. On automated production lines, the positioning fixtures for the roof need to achieve rapid and stable adsorption and position adjustment to adapt to the production requirements of different vehicle models. Existing positioning fixtures mostly employ mechanical clamping or negative pressure adsorption technology, with negative pressure adsorption being widely used due to its minimal damage to the workpiece surface.

[0003] Traditional negative pressure adsorption devices rely on external vacuum pumps and other negative pressure equipment, resulting in complex tooling systems and cumbersome piping layouts, increasing equipment costs and maintenance difficulty. Furthermore, existing tooling position adjustments are mostly rigid transmissions, making it difficult to adapt to changes in the curvature of the top cover surface, easily leading to insufficient adsorption force or workpiece deformation due to loose fit. In addition, the low precision of adsorption force control prevents dynamic adjustments based on top covers of different materials or thicknesses, affecting assembly efficiency and consistency. Utility Model Content

[0004] In view of the problems in the related technologies, this utility model proposes a positioning tool for the roof of an automobile body-in-white, so as to overcome the above-mentioned technical problems existing in the existing related technologies.

[0005] Therefore, the specific technical solution adopted by this utility model is as follows:

[0006] A positioning fixture for a car body-in-white roof includes a mounting base plate, a support base fixedly mounted on the mounting base plate, a drive structure connected to the support base, a transmission structure connected to the drive structure, and an adsorption structure connected to the transmission structure. The drive structure, in conjunction with the transmission structure and the adsorption structure, achieves the adsorption and positioning function of the car body-in-white roof.

[0007] Furthermore, the drive structure includes a drive device, a connecting rod, a drive rod, a connecting arm, a positioning block, and a positioning pin. The drive end of the drive device is provided with a drive rod, and one end of the drive device is connected to the connecting rod. The drive device is connected to the support base through the connecting rod. The drive rod is rotatably connected to the connecting arm. One side of the connecting arm is provided with a positioning block, and a positioning pin is fixed on the positioning block. The connecting arm is provided with a limiting bolt that matches the positioning pin.

[0008] Furthermore, the transmission structure includes a damping sleeve, a rotating rod, and a transmission arm. The rotating rod is rotatably connected inside the damping sleeve. The bottom end of the rotating rod is fixedly connected to the support arm, and the top end of the rotating rod is fixedly connected to the transmission arm.

[0009] Furthermore, the adsorption structure includes a connecting threaded rod, a connecting shaft, a connecting shell, a connecting ball shaft, a connecting sleeve, an electromagnetic block, a connecting outer shell, a guide rod, a suction cup, a magnetic block, a limiting plate, a return spring, a retaining ring, a resistance spring, and an oil seal ring. The connecting threaded rod is threaded onto the transmission support arm. The bottom end of the connecting threaded rod is connected to the connecting shaft, which is rotatably connected to the connecting shell. The bottom end of the connecting shell is fixedly connected to the connecting ball shaft, which is rotatably connected to the connecting sleeve. An annular electromagnetic block is fixedly installed on the inner ring of the connecting sleeve. The bottom end of the connecting sleeve is connected to the connecting outer shell, which is fixedly connected to the guide rod. The guide rod has a suction cup connected to the bottom of the connecting shell. The top of the electromagnetic block has a magnetic block. The bottom center of the magnetic block is fixedly connected to a slide rod. The bottom of the slide rod is fixedly connected to a limiting plate. The limiting plate has a sealing block. The sealing block has a return spring. The top of the return spring has a retaining ring. The retaining ring is fixedly connected to the connecting shell. The bottom of the sealing block has a mounting hole. A resistance spring is installed in the mounting hole. The bottom of the resistance spring contacts the limiting plate. An oil seal ring is flush-embedded on the outer ring of the sealing block. The oil seal ring is slidably connected to the inner cavity of the connecting shell. The bottom of the inner cavity of the connecting shell is fixedly provided with a limiting ring that matches the sealing block.

[0010] The beneficial effects of this utility model are as follows:

[0011] 1. The lifting and lowering of the sealing block is controlled by the magnetic repulsion / magnetic attraction between the electromagnetic block and the magnetic attraction block, which changes the negative pressure inside the suction cup, eliminating the need for traditional negative pressure pipelines and vacuum pumps, simplifying the structure and reducing maintenance costs;

[0012] 2. The drive structure and transmission structure work together to achieve planar position adjustment. The universal rotation of the connecting ball shaft and the connecting sleeve allows the suction cup to adapt to the curved angle of the top cover, ensuring a tight fit and improving positioning flexibility.

[0013] 3. By adjusting the current intensity of the electromagnetic block, the magnitude of the magnetic repulsion force can be changed, and the negative pressure inside the suction cup can be precisely controlled to prevent the top cover from deforming or falling off, thus adapting to the needs of workpieces of different materials and thicknesses. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the main structure of a positioning fixture for a car body-in-white roof according to an embodiment of the present utility model;

[0016] Figure 2 This is a schematic diagram of the transmission structure of a positioning fixture for a car body-in-white roof according to an embodiment of the present utility model;

[0017] Figure 3 This is a cross-sectional view of the adsorption structure of a positioning fixture for a car body-in-white roof according to an embodiment of the present utility model;

[0018] Figure 4 This is a schematic cross-sectional view of the suction cup of a positioning fixture for a car body-in-white roof according to an embodiment of the present utility model;

[0019] Figure 5 This is a breakdown diagram of the main structure of a positioning fixture for a car body-in-white roof according to an embodiment of the present utility model;

[0020] Figure 6 This is a schematic diagram of the connecting support arm of a positioning fixture for a car body-in-white roof according to an embodiment of the present utility model.

[0021] In the picture:

[0022] 1. Mounting base plate; 2. Support base; 3. Drive structure; 301. Drive device; 302. Connecting support rod; 303. Drive rod; 304. Connecting support arm; 305. Positioning block; 306. Positioning pin; 4. Transmission structure; 401. Damping sleeve; 402. Rotating rod; 403. Transmission support arm; 5. Adsorption structure; 501. Connecting threaded rod; 502. Connecting shaft; 503. Connecting shell; 504. Connecting ball shaft; 505. Connecting sleeve; 506. Electromagnetic block; 507. Connecting outer shell; 508. Guide rod; 509. Suction cup; 510. Magnetic block; 511. Limiting plate; 512. Return spring; 513. Retaining ring; 514. Resistance spring; 515. Oil seal ring. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] According to an embodiment of the present invention, a positioning fixture for the roof of an automobile body-in-white is provided.

[0025] like Figure 1 and Figure 5 As shown, the automotive body-in-white roof positioning fixture according to an embodiment of the present utility model includes a mounting base plate 1, a support base 2 fixedly mounted on the mounting base plate 1, a drive structure 3 connected to the support base 2, a transmission structure 4 connected to the drive structure 3, and an adsorption structure 5 connected to the transmission structure 4. The drive structure 3, in conjunction with the transmission structure 4 and the adsorption structure 5, realizes the adsorption positioning function of the body-in-white roof.

[0026] like Figure 2 and Figure 6 As shown, the drive structure 3 includes a drive device 301, a connecting support rod 302, a drive rod 303, a connecting support arm 304, a positioning block 305, and a positioning pin 306. The drive end of the drive device 301 is provided with a drive rod 303, and one end of the drive device 301 is connected to the connecting support rod 302. The drive device 301 is connected to the support base 2 through the connecting support rod 302. The drive rod 303 is rotatably connected to the connecting support arm 304. A positioning block 305 is provided on one side of the connecting support arm 304, and a positioning pin 306 is fixedly provided on the positioning block 305. A limiting bolt that matches the positioning pin 306 is provided on the connecting support arm 304.

[0027] The drive structure 3, as the power core of the tooling, outputs power through the drive device 301, cylinder, electric actuator, or hydraulic rod. This power is then transmitted to the drive rod 303, which drives the connecting arm 304 to rotate. This, in turn, drives the transmission structure 4 and the adsorption structure 5 to achieve planar position adjustment. The connecting rod 302 fixes the drive device 301 to the support base 2, ensuring the stability of power transmission. The positioning block 305 and the positioning pin 306, together with the limiting bolt, mechanically limit the outward movement range of the connecting arm 304 to prevent excessive transmission from causing structural damage. This structure, through mechanical transmission and limiting design, provides the basic power and positional constraints for the precise positioning of the subsequent adsorption structure 5. At the same time, the multiple types of drive devices available enhance the adaptability of the tooling.

[0028] Continue as Figure 2 and Figure 6 As shown, the transmission structure 4 includes a damping sleeve 401, a rotating rod 402, and a transmission support arm 403. The rotating rod 402 is rotatably connected inside the damping sleeve 401. The bottom end of the rotating rod 402 is fixedly connected to the support arm 304, and the top end of the rotating rod 402 is fixedly connected to the transmission support arm 403.

[0029] The transmission structure 4 receives the power from the drive structure 3 and transmits it to the adsorption structure 5. Its core is the damping rotational cooperation between the damping sleeve 401 and the rotating rod 402. The bottom end of the rotating rod 402 is fixed to the connecting support arm 304, and the top end is connected to the transmission support arm 403. When the drive structure 3 drives the connecting support arm 304 to rotate, the rotating rod 402 generates damped rotation in the damping sleeve 401, so that the transmission support arm 403 drives the adsorption structure 5 to achieve smooth angle and position adjustment, avoiding the impact caused by rigid transmission. The damping characteristics ensure the stability of the adsorption structure 5 during the adjustment process and prevent the top cover from shifting during the positioning process. At the same time, the length design of the transmission support arm 403 provides sufficient adjustment stroke for the adsorption structure 5, realizing the continuous action of "drive-buffer-transmission".

[0030] like Figure 3 and Figure 4As shown, the adsorption structure 5 includes a connecting threaded rod 501, a connecting shaft 502, a connecting shell 503, a connecting ball shaft 504, a connecting sleeve 505, an electromagnetic block 506, a connecting outer shell 507, a guide rod 508, a suction cup 509, a magnetic block 510, a limiting plate 511, a return spring 512, a retaining ring 513, a resistance spring 514, and an oil seal ring 515. The connecting threaded rod 501 is threaded onto the transmission support arm 403. The bottom end of the connecting threaded rod 501 is connected to the connecting shaft 502. The connecting shaft 502 is rotatably connected to the connecting shell 503. The bottom end of the connecting shell 503 is fixedly connected to the connecting ball shaft 504. The connecting ball shaft 504 is rotatably connected to the connecting sleeve 505. An annular electromagnetic block 506 is fixedly installed on the inner ring of the connecting sleeve 505. The bottom end of the connecting sleeve 505 is connected to the connecting outer shell 507. 7. A guide rod 508 is fixedly connected to the connecting housing 507. A suction cup 509 is connected to the bottom end of the connecting housing 507. A magnetic block 510 is provided at the top of the electromagnetic block 506. A slide rod is fixedly connected to the center of the bottom end of the magnetic block 510. A limiting plate 511 is fixedly provided at the bottom end of the slide rod. A sealing block is provided on the limiting plate 511. A return spring 512 is provided on the sealing block. A retaining ring 513 is provided at the top end of the return spring 512. The retaining ring 513 is fixedly connected to the connecting housing 507. An installation hole is opened at the bottom end of the sealing block. A resistance spring 514 is installed in the installation hole. The bottom end of the resistance spring 514 is in contact with the limiting plate 511. An oil seal ring 515 is flatly embedded on the outer ring of the sealing block. The oil seal ring 515 is slidably connected to the inner cavity of the connecting housing 507. A limiting ring matching the sealing block is fixedly provided at the bottom end of the inner cavity of the connecting housing 507.

[0031] The adsorption structure 5 is the core actuator for achieving the adsorption and positioning of the top cover. It achieves efficient adsorption through a triple design of mechanical connection, angle self-adaptation, and electromagnetic control. The threaded rod 501 is threadedly connected to the transmission arm 403, allowing for fine adjustment of the initial height of the adsorption structure 5. The rotational engagement of the connecting shaft 502 and the connecting shell 503, combined with the omnidirectional rotation of the connecting ball shaft 504 and the connecting sleeve 505, enables the suction cup 509 to adapt to the tilt angle of the top cover surface, ensuring a tight fit. The electromagnetic block 506 controls the raising and lowering of the magnetic block 510 through magnetic force: when energized, it generates magnetic attraction. The magnetic repulsion of the same pole of block 510 pushes the limit plate 511 and the sealing block upward, increasing the negative pressure inside the suction cup 509 to achieve adsorption. When the power is off or reversed, the magnetic attraction drives the sealing block downward, breaking the vacuum and releasing the top cover. The reset spring 512 and the resistance spring 514 assist the sealing block in resetting, the oil seal ring 515 enhances the sealing performance, and the guide rod 508 ensures the vertical movement of the suction cup 509. This structure does not require an external negative pressure device and achieves rapid adsorption and release through electromagnetic-mechanical composite control. With the coordinated work of multiple sets of tooling, the top cover can be stably fixed and adjusted in multiple dimensions.

[0032] To facilitate understanding of the above-mentioned technical solutions of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below.

[0033] The cooperation between drive structure 3 and transmission structure 4 enables a certain range of planar position adjustment for the body-in-white roof adsorbed by adsorption structure 5. Adsorption structure 5 provides convenient adsorption, offering an adsorption effect without the need for a negative pressure device, unlike traditional adsorption devices. The drive device 301 of drive structure 3 is one of a cylinder, electric actuator, or hydraulic rod, driving drive rod 303 and connecting support arm 304. Positioning block 305 and positioning pin 306 limit the outward movement of connecting support arm 304. The rotating rod 402 of transmission structure 4, under the damping force of damping sleeve 401, drives transmission support arm 403. Adsorption structure 5 connected to transmission support arm 403 then provides a certain range of transmission for body-in-white roof. The positioning fixture consisting of drive structure 3, transmission structure 4, and adsorption structure 5 is composed of four units forming a set, which can better adsorb and fix the roof. Since the connecting shell 503 is connected to the connecting sleeve 505 via the connecting ball shaft 504, the suction cup 509 has a certain range of angular rotation after adsorption. After the suction cup 509 is adsorbed onto the surface of the top cover, by controlling the charging state and current intensity of the electromagnetic block 506, the electromagnetic block 506 generates a magnetic force with the same magnetic pole as the magnetic suction block 510 facing the same surface, thereby generating a magnetic repulsion force. Since the electromagnetic block 506 is fixedly installed relative to the magnetic suction block 510, the magnetic suction block 510 will drive the limiting plate 511 and the oil seal block to move upward via the slide rod. This process will change the adsorption space inside the suction cup 509, thereby increasing the suction force and improving the adsorption force on the top cover. Conversely, when the electromagnetic block 506 generates a magnetic force with the opposite magnetic pole to the magnetic suction block 510 facing the same surface, the limiting plate 511 will move downward relative to the sealing block, which will destroy the vacuum inside the suction cup 509 and thus cancel the adsorption state.

[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A positioning fixture for the roof of an automobile body-in-white, characterized in that, It includes a mounting base plate (1), a support base (2) fixedly mounted on the mounting base plate (1), a drive structure (3) connected to the support base (2), a transmission structure (4) connected to the drive structure (3), an adsorption structure (5) connected to the transmission structure (4), and the drive structure (3) working together with the transmission structure (4) and the adsorption structure (5) to achieve the adsorption and positioning function of the white body roof.

2. The positioning fixture for the roof of a car body-in-white according to claim 1, characterized in that, The drive structure (3) includes a drive device (301), a connecting rod (302), a drive rod (303), a connecting arm (304), a positioning block (305), and a positioning pin (306). The drive end of the drive device (301) is provided with a drive rod (303), and one end of the drive device (301) is connected to the connecting rod (302). The drive device (301) is connected to the support base (2) through the connecting rod (302).

3. The positioning fixture for the roof of a car body-in-white according to claim 2, characterized in that, The drive rod (303) is rotatably connected to the connecting arm (304). A positioning block (305) is provided on one side of the connecting arm (304). A positioning pin (306) is fixed on the positioning block (305). A limiting bolt that matches the positioning pin (306) is provided on the connecting arm (304).

4. The positioning fixture for the roof of a car body-in-white according to claim 3, characterized in that, The transmission structure (4) includes a damping sleeve (401), a rotating rod (402), and a transmission arm (403). The rotating rod (402) is connected to the damping sleeve (401) in a damping rotatable manner. The bottom end of the rotating rod (402) is fixedly connected to the support arm (304), and the top end of the rotating rod (402) is fixedly connected to the transmission arm (403).

5. The positioning fixture for the roof of a car body-in-white according to claim 4, characterized in that, The adsorption structure (5) includes a connecting threaded rod (501), a connecting shaft (502), a connecting shell (503), a connecting ball shaft (504), a connecting sleeve (505), an electromagnetic block (506), a connecting shell (507), a guide rod (508), a suction cup (509), a magnetic block (510), a limiting plate (511), a reset spring (512), a retaining ring (513), a resistance spring (514), and an oil seal ring (515). The connecting threaded rod (501) is threadedly connected to the transmission support arm (403). The bottom end of the connecting threaded rod (501) is connected to the connecting shaft (502). The connecting shaft (502) is rotatably connected to the connecting shell (503). The bottom end of the connecting shell (503) is fixedly connected to the connecting ball shaft (504).

6. The positioning fixture for the roof of a car body-in-white according to claim 5, characterized in that, A connecting ball shaft (504) is rotatably connected to a connecting sleeve (505). An annular electromagnetic block (506) is fixedly provided on the inner ring of the connecting sleeve (505). A connecting shell (507) is connected to the bottom end of the connecting sleeve (505). A guide rod (508) is fixedly connected to the connecting shell (507). A suction cup (509) is connected to the bottom end of the connecting shell (507). A magnetic suction block (510) is provided on the top of the electromagnetic block (506).

7. The positioning fixture for a car body-in-white roof according to claim 6, characterized in that, A sliding rod is fixedly connected to the bottom center of the magnetic block (510). A limiting plate (511) is fixedly provided at the bottom end of the sliding rod. A sealing block is provided on the limiting plate (511). A reset spring (512) is provided on the sealing block. A retaining ring (513) is provided at the top of the reset spring (512). The retaining ring (513) is fixedly connected to the outer shell (507).

8. The positioning fixture for a car body-in-white roof according to claim 7, characterized in that, The sealing block has an installation hole at the bottom, and a resistance spring (514) is installed in the installation hole. The bottom end of the resistance spring (514) is in contact with the limiting plate (511). An oil seal ring (515) is flatly embedded on the outer ring of the sealing block. The oil seal ring (515) is slidably connected to the inner cavity of the connecting shell (507). A limiting ring matching the sealing block is fixedly provided at the bottom end of the inner cavity of the connecting shell (507).

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