Automobile self-tapping screw positioning equipment

Abstract

The invention discloses automobile self-tapping screw positioning equipment which comprises a positioning mechanism, the positioning mechanism comprises a positioning plate, and the positioning plate is provided with a first X-direction positioning block, a Y-direction positioning block, a Z-direction positioning block and a plurality of positioning holes matched with a tightening tool sleeve head. The relative position of each positioning surface is consistent with the relative position of the molded surface of the vehicle body skirt corresponding to each positioning surface, and the relative position of each positioning hole and each positioning surface is consistent with the relative position of each molded surface of the vehicle body skirt corresponding to the mounting position of each self-tapping screw. The positioning equipment has the advantages that the accurate mounting position of the self-tapping screw can be ensured through the positioning equipment, and the problem of fit clearance of subsequent parts caused by position deviation of the self-tapping screw is avoided; a reinforcing sleeve is mounted in each positioning hole, so that the tightening tool can be guided, and force can be conveniently applied; and the positioning mechanism can be conveniently clamped on the skirt edge of the vehicle body and disassembled through the locking mechanism, so that the working efficiency is high.

Description

Technical Field

[0001] The invention relates to the technical field of automobile assembly, in particular to an automobile self-tapping screw positioning device. Background Art

[0002] In the vehicle manufacturing process, self-tapping screws are a commonly used part, and tightening self-tapping screws with pneumatic or electric tools is a typical application scenario. The assembly process of vehicle side skirt trim is one of the application scenarios. Eight self-tapping screws need to be tightened to the body sheet metal. These eight self-tapping screws play a positioning role to ensure that the side skirt trim is in the correct position. In the vehicle coordinate system, each self-tapping screw has a specific position requirement (coordinates), so a positioning device is required to ensure that the self-tapping screw is tightened to the correct position. Summary of the invention

[0003] In order to solve at least one of the above technical problems, the present invention provides a self-tapping screw positioning device for automobiles, the positioning device comprising a positioning plate, on which a first X-axis positioning block, a Y-axis positioning block, a Z-axis positioning block and a plurality of positioning holes adapted to the socket head of a tightening tool are provided, the relative position of each positioning surface is consistent with the relative position of the body skirt profile corresponding to each positioning surface, the relative position of each positioning hole and each positioning surface is consistent with the corresponding installation position of each self-tapping screw and the relative position of each profile of the body skirt, and the self-tapping screw is tightened to the correct position through the positioning hole.

[0004] The present invention solves the technical problem by adopting the following technical solution:

[0005] An automobile self-tapping screw positioning device comprises a positioning mechanism, wherein the positioning mechanism comprises a positioning plate and a first X-direction positioning block, a Y-direction positioning block and a Z-direction positioning block arranged on the positioning plate;

[0006] The first X-direction positioning block is arranged at the front end of the positioning plate and has a first X-direction positioning surface, and the first X-direction positioning surface is used to abut against the front end of the body skirt;

[0007] The Y-direction positioning block and the Z-direction positioning block are arranged in the middle of the positioning plate, and respectively have a Y-direction positioning surface and a Z-direction positioning surface, wherein the Y-direction positioning surface is adapted to the Y-direction profile of the body skirt, and the Z-direction positioning surface is adapted to the Z-direction profile of the body skirt; the X-direction spacings between the Y-direction positioning surface and the Z-direction positioning surface and the first X-direction positioning surface are respectively consistent with the X-direction spacings between the front end of the body skirt and the corresponding profile of the body skirt corresponding to the corresponding positioning surface;

[0008] The positioning plate is provided with multiple positioning holes that are compatible with the tightening tool socket head; the X-direction spacing between each positioning hole and the first X-direction positioning surface is consistent with the X-direction spacing between the corresponding installation positions of each self-tapping screw and the front end of the vehicle body skirt; the Z-direction spacing between each positioning hole and the Z-direction positioning surface is consistent with the Z-direction spacing between the corresponding installation positions of each self-tapping screw and the Z-direction profile of the vehicle body skirt corresponding to the Z-direction positioning surface.

[0009] Further, the device comprises a lower frame, an upper frame and a locking mechanism;

[0010] The lower frame comprises a base frame, two first longitudinal beams and two slide rails, the two first longitudinal beams are respectively arranged at two ends of the base frame in the X direction, and the two slide rails are respectively fixed with the two first longitudinal beams through the first connecting plates;

[0011] The upper frame includes multiple first sliders and two second longitudinal beams, each first slider is connected to the two second longitudinal beams through a second connecting plate; the positioning plate is connected to the two second longitudinal beams through two third connecting plates; the first slider is slidably connected to the corresponding slide rail; the locking mechanism is used to lock the first slider so that the positioning mechanism can adapt to the height of the vehicle body skirt.

[0012] Furthermore, the locking mechanism comprises a cross bar, a second slider, a coil spring and a limit structure, and both ends of the cross bar are respectively connected to the two second longitudinal beams through a fourth connecting plate;

[0013] The second slider includes a plurality of sliders, which are respectively connected to the two slide rails in a sliding manner; the lower end of the coil spring is connected to the second slider and the second longitudinal beam through a fifth connecting plate, and the upper end is connected to the first connecting plate through a sixth connecting plate, and the coil spring is in a stretched state;

[0014] The limiting structure includes a first limiting plate and a locking pin, the first limiting plate is arranged on the first connecting plate, and a pin seat is arranged on the fourth connecting plate, one end of the locking pin passes through the pin seat, and the other end of the locking pin is connected to a pull rope, and the pull rope is connected to a release handle; when the release handle is squeezed, the locking pin retracts into the pin seat, and when the release handle is released, the locking pin extends out of the pin seat and extends to the bottom of the first limiting plate, which is convenient for installing and disassembling the positioning device.

[0015] Furthermore, the positioning device also includes a gas spring, a first cross beam is arranged between the two first longitudinal beams, one end of the gas spring is connected to the first cross beam, and the other end is connected to the first slider to provide buffering protection for the operation process.

[0016] Furthermore, second limit plates are provided at the upper and lower ends of the two slide rails to prevent the sliders from moving out of the slide rails.

[0017] Furthermore, a reinforcing sleeve is provided in the positioning hole; preferably, the inner diameter of the reinforcing sleeve is 0.1-0.3 mm larger than the outer diameter of the sleeve head of the tightening tool, so as to guide and limit the screwing direction of the tightening tool.

[0018] Furthermore, the Y-direction positioning block and the Z-direction positioning block are integrally arranged, which is convenient in design and simple in structure.

[0019] Furthermore, the Z-direction positioning surface of the Z-direction positioning block is provided with an avoidance groove, so that the Z-direction positioning surface can be positioned accurately.

[0020] Furthermore, the positioning mechanism also includes a second X-axis positioning block, which is arranged at the rear end of the positioning plate and has a second X-axis positioning surface. The distance between the second X-axis positioning surface and the first X-axis positioning surface is 5-30 mm larger than the length of the vehicle body skirt, so as to facilitate the Y-axis positioning block and the Z-axis positioning block to be roughly aligned with the corresponding positions of the vehicle body skirt.

[0021] Furthermore, a storage groove is provided on the lower frame, and two ends of the storage groove are respectively connected to the two first longitudinal beams, and can be used to store self-tapping screws and tightening tools.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] (1) For self-tapping screws that require precise positioning, the positioning equipment can ensure the accuracy of the installation position and avoid the subsequent parts matching clearance problems caused by the position deviation of the self-tapping screws.

[0024] (2) A reinforcing sleeve is installed in each positioning hole. The reinforcing sleeve is designed to have a clearance fit with the tightening tool. This can guide the tightening tool during tightening, facilitate force application, and improve ergonomics.

[0025] (3) The locking mechanism can be used to easily connect the positioning mechanism to the body skirt and remove it, which improves work efficiency, reduces installation time, and adapts to production cycle requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to better understand the above and other purposes, features, advantages and functions of the present invention, reference may be made to the embodiments shown in the accompanying drawings. The same reference numerals in the accompanying drawings refer to the same components. It should be understood by those skilled in the art that the accompanying drawings are intended to schematically illustrate the preferred embodiments of the present invention and have no limiting effect on the scope of the present invention, and the components in the drawings are not drawn to scale.

[0027] Figure 1 It is a structural schematic diagram of the automobile self-tapping screw positioning device of the present invention.

[0028] Figure 2 This is a schematic diagram of the structure of the automobile self-tapping screw positioning device of the present invention in another direction.

[0029] Figure 3 It is a schematic diagram of the structure of an enlarged view of A of the present invention.

[0030] Figure 4 It is a schematic diagram of the enlarged structure of B of the present invention.

[0031] Figure 5 It is a schematic diagram of the enlarged structure of C of the present invention.

[0032] Figure 6 This is a schematic structural diagram of the automobile self-tapping screw positioning device of the present invention when in use.

[0033] Figure 7 It is a schematic diagram of the tightening tool structure.

[0034] In the figure: 10-positioning plate; 11-first X-direction positioning block; 111-first X-direction positioning surface; 12-YZ positioning block; 121-Y-direction positioning surface; 122-Z-direction positioning surface; 1221-avoidance groove; 13-positioning hole; 14-reinforcement sleeve; 15-second X-direction positioning block; 151-second X-direction positioning surface; 21-base frame; 221-first longitudinal beam; 222-second longitudinal beam; 23-slide rail; 241-first slider; 242-second slider; 25-cross bar; 261-first connecting plate; 26 2-second connecting plate; 263-third connecting plate; 264-fourth connecting plate; 265-fifth connecting plate; 266-sixth connecting plate; 27-helical spring; 28-first limiting plate; 29-locking pin; 210-pin seat; 211-pull rope; 212-release handle; 213-gas spring; 214-first crossbeam; 215-second limiting plate; 216-storage slot; 217-universal wheel; 30-tightening tool; 31-socket head; 40-white body; 41-body skirt; 50-self-tapping screw. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the exemplary embodiments of the present invention are described below in conjunction with the accompanying drawings, including various details of the embodiments of the present invention to facilitate understanding, which should be considered as merely exemplary. Therefore, it should be recognized by those of ordinary skill in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present disclosure. Similarly, for the sake of clarity and conciseness, the description of well-known functions and structures is omitted in the following description.

[0036] In the description of the present invention, it should be noted that the term "including" and its variations represent open inclusion, that is, "including but not limited to". The terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance. The directions "X", "Y" and "Z" take the vehicle's travel direction as the X direction, the direction from the driver's side to the co-pilot's side as the Y direction, and the vehicle height direction as the Z direction. In addition, in the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0037] The present invention provides a self-tapping screw positioning device for automobiles, referring to Figure 1-Figure 3 As shown, it includes a positioning mechanism, which includes a positioning plate 10 and a first X-direction positioning block 11, a Y-direction positioning block and a Z-direction positioning block arranged on the positioning plate 10. The first X-direction positioning block 11 is arranged at the front end of the positioning plate 10 and has a first X-direction positioning surface 111, which is used to abut against the front end of the body skirt 41, and can limit the X-direction of the positioning mechanism.

[0038] The Y-direction positioning block and the Z-direction positioning block are arranged in the middle of the positioning plate 10, and have a Y-direction positioning surface 121 and a Z-direction positioning surface 122 respectively. The Y-direction positioning surface 121 is adapted to the Y-direction profile of the body skirt 41, and the Z-direction positioning surface 122 is adapted to the Z-direction profile of the body skirt 41. The Y-direction positioning surface 121 and the Z-direction positioning surface 122 are designed in accordance with the body skirt 41, and can be completely fitted with the body skirt 41 area to achieve accurate positioning of the positioning mechanism in the Y and Z directions. The X-direction spacings of the Y-direction positioning surface 121 and the Z-direction positioning surface 122 and the first X-direction positioning surface 111 are respectively consistent with the X-direction spacings between the front end of the body skirt 41 and the corresponding profile of the body skirt 41 corresponding to the corresponding positioning surface. Specifically, the X-direction spacing between the Y-direction positioning surface 121 and the first X-direction positioning surface 111 is consistent with the X-direction spacing between the front end of the body skirt 41 and the Y-direction profile of the body skirt 41 corresponding to the Y-direction positioning surface 121; the X-direction spacing between the Z-direction profile of the Z-direction positioning block and the first X-direction positioning surface 111 is consistent with the X-direction spacing between the front end of the body skirt 41 and the Z-direction positioning surface 122 of the body skirt 41. In this way, the X-direction spacing between the Y-direction positioning surface 121 and the Z-direction positioning surface 122 is consistent with the spacing between the Y-direction profile and the Z-direction profile of the corresponding body skirt 41, so that the relative position of the positioning surface of each positioning block is consistent with the relative position of the profile of the body skirt 41 corresponding to each positioning surface. The body skirt 41 is relatively long, and the Y-direction positioning block and the Z-direction positioning block can be set to two, so that the Y-direction and Z-direction positioning are accurate and stable.

[0039] Preferably, if Figure 3As shown, the Y-direction positioning block and the Z-direction positioning block are integrally arranged to form a YZ positioning block 12. In this way, the Y-direction and Z-direction positioning can be performed simultaneously through the same YZ positioning block 12, the structure is simpler, there is no need to consider the X-direction spacing between the Y-direction positioning block and the Z-direction positioning block, the design is more convenient, the assembly error is reduced, and the positioning is more accurate.

[0040] The positioning plate 10 is provided with a plurality of positioning holes 13 adapted to the socket head 31 of the tightening tool 30; the X-direction spacing between each positioning hole 13 and the first X-direction positioning surface 111 is consistent with the X-direction spacing between the corresponding installation position of each self-tapping screw 50 and the front end of the vehicle body skirt 41; the Z-direction spacing between each positioning hole 13 and the Z-direction positioning surface 122 is consistent with the Z-direction spacing between the corresponding installation position of each self-tapping screw 50 and the Z-direction profile of the vehicle body skirt 41 corresponding to the Z-direction positioning surface 122, thereby ensuring that the X-direction position and Z-direction position of each positioning hole 13 are accurate.

[0041] refer to Figure 6 and Figure 7 As shown, when the body-in-white 40 is transported to the self-tapping screw 50 installation station by the slide, the operator clamps the positioning device to the body skirt 41, so that the X-direction positioning surface of the first X-direction positioning block 11 abuts against the front end of the body skirt 41, the Y-direction positioning surface 121 of the Y-direction positioning block fits the Y-direction profile of the body skirt 41, and the Z-direction positioning surface 122 of the Z-direction positioning block fits the Z-direction profile of the body skirt 41, and the positioning mechanism is installed in place. The self-tapping screw 50 is inserted into the sleeve head 31 of the tightening tool 30, and the sleeve head 31 passes through the positioning hole 13 to install the self-tapping screw 50 on the body skirt 41 below the door sill of the body-in-white 40. The installation position of each self-tapping screw 50 is consistent with the coordinate position of the whole vehicle, so as to realize the automatic positioning of the self-tapping screw 50, so that the self-tapping screw 50 is installed in the correct position of the body skirt 41, and ensure that the side skirt decorative parts are in the correct position. When the self-tapping screws 50 are installed, the slide plate continues to move forward, so that the front end of the body skirt 41 can be pressed against the first X-direction positioning surface 111, thereby preventing the positioning mechanism from shifting and improving the accuracy of positioning.

[0042] In one embodiment, Figure 1 and Figure 2 As shown, the device includes a lower frame, an upper frame and a locking mechanism. The lower frame includes a base frame 21, two first longitudinal beams 221 and two slide rails 23. The two first longitudinal beams 221 are respectively arranged at the two ends of the base frame 21 in the X direction, and the two slide rails 23 are respectively fixed to the two first longitudinal beams 221 through the first connecting plate 261. The base frame 21 can adopt an "I"-shaped structure, assisted by a reinforcing rod to ensure the overall strength of the device and the stability during use. A plurality of universal wheels 217 can be arranged at the bottom of the base frame 21, so that the device as a whole can move in the X direction and the Y direction, so as to facilitate the positioning device to be moved to the installation station.

[0043] The upper frame includes a plurality of first sliders 241 and two second longitudinal beams 222, and each first slider 241 is connected to the two second longitudinal beams 222 through a second connecting plate 262. Preferably, the first slider 241 can be set to two, and connected to the two second longitudinal beams 222 through two second connecting plates 262. In order to improve the rigidity of the upper frame, a plurality of second cross beams can be set between the two second longitudinal beams 222. The positioning plate 10 is connected to the two second longitudinal beams 222 through two third connecting plates 263. Preferably, the third connecting plate 263 can be set to a T-shape, including a cross plate and a longitudinal plate, and the third connecting plate 263 is set at the YZ positioning block 12, and the YZ positioning block 12 can be connected to one end of the cross plate, and the positioning plate 10 can be set to a rectangular plate, connected to the other end of the cross plate through a base, and the longitudinal plate can be connected to the second longitudinal beam 222. In this way, through the third connecting plate 263, the YZ positioning block 12 can be fixedly connected to the positioning plate 10 and the second longitudinal beam 222 at the same time. The first slider 241 is slidably connected to the corresponding slide rail 23. When the first slider 241 moves up and down along the slide rail 23, it can drive the second longitudinal beam 222 and the positioning plate 10 to move up and down, that is, the upper frame and the positioning plate 10 can move up and down along the slide rail 23, so that the positioning mechanism can be adapted to the height of the body skirt 41, which is convenient for installing and removing the positioning device. The locking mechanism is used to lock the first slider 241 and limit the first slider 241.

[0044] In one embodiment, Figure 4 and Figure 5As shown, the locking mechanism includes a cross bar 25, a second slider 242, a coil spring 27 and a limiting structure. The two ends of the cross bar 25 are connected to the two second longitudinal beams 222 through a fourth connecting plate 264. The fourth connecting plate 264 can be connected to the second connecting plate 262, and the cross bar 25 is connected to the first slider 241 and the second longitudinal beam 222 at the same time. The second slider 242 includes a plurality of sliders, preferably, the second slider 242 can be set to two, which are respectively connected to the two slide rails 23 by sliding fit. The lower end of the coil spring 27 is connected to the second slider 242 and the second longitudinal beam 222 through a fifth connecting plate 265, and the upper end is connected to the first connecting plate 261 through a sixth connecting plate 266. The coil spring 27 is in a stretched state. The second slider 242 is simultaneously connected to the lower end of the coil spring 27 and the second longitudinal beam 222 through the fifth connecting plate 265, and the first slider 241, the second slider 242 and the second longitudinal beam 222 form an integral structure. The limiting structure includes a first limiting plate 28 and a locking pin 29, the first limiting plate 28 is arranged on the first connecting plate 261, and a pin seat 210 is arranged on the fourth connecting plate 264, one end of the locking pin 29 passes through the pin seat 210, and the other end of the locking pin 29 is connected to a pull rope 211, and the pull rope 211 is connected to a release handle 212; when the release handle 212 is squeezed, the locking pin 29 retracts into the pin seat 210, and when the release handle 212 is released, the locking pin 29 extends out of the pin seat 210 and extends to the bottom of the first limiting plate 28.

[0045] When the positioning device is not in use, the release handle 212 is in the released state, the locking pin 29 extends out of the pin seat 210 to the bottom of the first limit plate 28, and the first slider 241, the second slider 242, the second longitudinal beam 222 and the positioning mechanism are at the initial height. The Z-direction profile of the bottom of the body skirt 41 is a curved surface structure, and the Z-direction positioning surface 122 of the Z-direction positioning block is correspondingly set as a curved surface structure. When the Z-direction positioning block performs Z-direction positioning on the body skirt 41, it is necessary to move the Z-direction positioning block upward from the bottom of the body skirt 41 until it fits with the Z-direction profile of the body skirt 41. Therefore, the initial height of the positioning mechanism is lower than the height of the body skirt 41. When the body-in-white 40 runs to the self-tapping screw 50 installation station and the positioning device needs to be used to install the self-tapping screw 50, the release handle 212 is squeezed, and the pull rope 211 pulls the locking pin 29 back into the pin seat 210. The coil spring 27 is in a stretched state. At this time, the locking pin 29 has been retracted into the pin seat 210. The coil spring 27 contracts, pulling the second slider 242 upward. The second slider 242 moves the second longitudinal beam 222 and the first slider 241 upward, thereby moving the positioning plate 10 upward until the Z-direction positioning surface 122 of the Z-direction positioning block fits the Z-direction profile of the body skirt 41, and the second slider 242 stops moving upward. At this time, the positioning mechanism is installed in place, and each positioning hole 13 is positioned.

[0046] After the self-tapping screw 50 is installed, when the tool needs to be removed from the body-in-white 40, the cross bar 25 is directly pressed, or the release handle 212 is squeezed and then the cross bar 25 is pressed, and the cross bar 25 moves downward with the first slider 241 and the second longitudinal beam 222, and the second longitudinal beam 222 moves downward with the positioning plate 10 and separates from the body skirt 41. After the cross bar 25 is lower than the first limit plate 28, the cross bar 25 is released, the coil spring 27 contracts, and the second slider 242 moves upward, and the second slider 242 moves upward with the second longitudinal beam 222 until the locking pin 29 abuts against the first limit plate 28, so that the positioning plate 10 is reset. The upper frame is driven to move by the coil spring 27, which is convenient to operate, improves work efficiency, reduces installation time, and meets the production cycle requirements.

[0047] The coil spring 27 can be set as one. In order to keep the positioning mechanism stable during movement, it is better to set two coil springs 27, which are respectively set at both ends of the upper frame. Only one limiting structure is required for convenient operation. Each slide rail 23 can be fixedly set on the corresponding first longitudinal beam 221 through multiple first connecting plates 261, so that the slide rail 23 and the first longitudinal beam 221 are reliably and firmly connected. The first limiting plate 28 can be set on the upper first connecting plate 261.

[0048] In one embodiment, Figure 5 As shown, the positioning device also includes a gas spring 213, and a first crossbeam 214 is arranged between the two first longitudinal beams 221. One end of the gas spring 213 is connected to the first crossbeam 214, and the other end is connected to the first slider 241. When the cross bar 25 is pressed downward, the first slider 241 moves downward to press the gas spring 213 downward, and the second slider 242 moves downward to stretch the coil spring 27 downward; after releasing the cross bar 25, the coil spring 27 retracts and pulls the second slider 242 upward, and the second slider 242 drives the first slider 241 to move upward, and the first slider 241 pulls the gas spring 213 upward, and the gas spring 213 can be buffered during operation. When the coil spring 27 is disengaged during operation, the gas spring 213 can also provide buffer protection to prevent the upper frame from moving too much, and the slider and the fifth connecting plate 265 collide with the lower frame. In order to keep the positioning mechanism stable during movement, two gas springs 213 can be set, which are respectively set at both ends of the upper frame. The base frame 21, each longitudinal beam and cross beam can use square steel pipes to reduce the weight of the positioning device.

[0049] In one embodiment, a second limiting plate 215 is disposed at the upper and lower ends of the two slide rails 23 to prevent each slider from moving out of the slide rail 23 .

[0050] When installing the self-tapping screw 50, the tightening tool 30 vibrates violently. In order to prevent the self-tapping screw 50 and the tightening tool 30 from being disengaged, the tightening tool 30 needs to be pressed hard. In order to reduce the weight of the equipment, the positioning plate 10 uses an aluminum alloy plate. In order to prevent the positioning plate 10 from being worn and deformed, a reinforcing sleeve 14 can be set in the positioning hole 13. The reinforcing sleeve 14 can use a steel sleeve that can withstand the pressure applied by the tightening tool 30.

[0051] The size of the positioning hole 13 can be designed with reference to the tightening tool 30, and the positioning hole 13 and the sleeve head 31 part of the cylindrical front end of the tightening tool 30 adopt a clearance fit. Preferably, the inner diameter of the reinforcing sleeve 14 is 0.1-0.3mm larger than the outer diameter of the sleeve head 31 of the tightening tool 30. The inner diameter of the reinforcing sleeve 14 is slightly larger than the outer diameter of the sleeve head 31 of the tightening tool 30. For example, the inner diameter of the reinforcing sleeve 14 can be 0.1mm, 0.15mm, 0.2mm, 0.25mm or 0.3mm larger than the outer diameter of the sleeve head 31 of the tightening tool 30. In this way, when the tightening tool 30 passes through the reinforcing sleeve 14, the reinforcing sleeve 14 can guide and limit the tightening tool 30, and the resulting position deviation is small, thereby improving the accuracy of the installation position of the self-tapping screw 50. The X-axis positioning block, the Y-axis positioning block, and the Z-axis positioning block are located on the same side of the positioning plate 10. When the positioning device is used, there is a gap between the positioning plate 10 and the body skirt 41. The length of the reinforcing sleeve 14 can also be lengthened to further guide and limit the screwing direction of the tightening tool 30, which is convenient for tightening the self-tapping screw 50, preventing the tightening tool 30 from vibrating and causing position deviation, and improving the ergonomic experience. The reinforcing sleeve 14 can be detachably connected to the positioning plate 10 through the flange surface, which can prevent the tightening tool 30 from wearing the positioning plate 10 when it directly contacts the positioning plate 10, and the reinforcing sleeve 14 can be easily replaced after it is worn or damaged.

[0052] In order to improve the sealing and waterproof performance of the whole vehicle, the vehicle body needs to be coated with glue during the manufacturing process. The residual glue of the vehicle body gathers at the bottom of the vehicle body under the action of gravity. The residual glue accumulates at the bottom of the vehicle body skirt 41. In order to improve the accuracy of the Z-direction positioning of the positioning device, Figure 3 As shown, an avoidance groove 1221 may be provided on the Z-direction positioning surface 122 of the Z-direction positioning block so that the residual glue is contained in the avoidance groove 1221 to prevent the residual glue from lowering the Z-direction positioning surface 122 .

[0053] In one embodiment, the positioning mechanism further includes a second X-direction positioning block 15, which is disposed at the rear end of the positioning plate 10 and has a second X-direction positioning surface 151, and the distance between the second X-direction positioning surface 151 and the first X-direction positioning surface 111 is 5-30 mm greater than the length of the body skirt 41. For example, the distance between the second X-direction positioning surface 151 and the first X-direction positioning surface 111 is 5 mm, 10 mm, 15 mm, 20 mm, 25 mm or 30 mm greater than the length of the body skirt 41. In this way, the distance between the second X-direction positioning surface 151 and the first X-direction positioning surface 111 is slightly greater than the length of the body skirt 41, and the second X-direction positioning block 15 can assist in positioning the rear end of the body skirt 41, making it convenient to clamp the positioning mechanism on the body skirt 41, and at the same time, the Y-direction positioning block and the Z-direction positioning block can be roughly aligned with the corresponding positions of the body skirt 41, thereby improving the operation efficiency.

[0054] The second X-direction positioning block 15 and the first X-direction positioning block 11 can use the same positioning block. The two X-direction positioning blocks can be set to an L shape, with one side as a mounting portion fixed to one side of the positioning plate 10, and the other side as a positioning portion, which is perpendicular to the mounting plate. A through hole is set in the mounting portion, and a long hole extending along the X direction and adapted to the through hole is set in the positioning plate 10. The second X-direction positioning block 15 can be moved along the long hole to adjust the distance between the second X-direction positioning surface 151 and the first X-direction positioning surface 111.

[0055] In one embodiment, a storage groove 216 is provided on the lower frame, and two ends of the storage groove 216 are respectively connected to two first longitudinal beams 221. The storage groove 216 can store the self-tapping screw 50 and the tightening tool 30, so that the self-tapping screw 50 can be easily taken and operated.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An automobile self-tapping screw positioning device, characterized in that: It includes a positioning mechanism, which includes a positioning plate and a first X-direction positioning block, a Y-direction positioning block and a Z-direction positioning block arranged on the positioning plate; The first X-direction positioning block is arranged at the front end of the positioning plate and has a first X-direction positioning surface, and the first X-direction positioning surface is used to abut against the front end of the body skirt; The Y-direction positioning block and the Z-direction positioning block are arranged in the middle of the positioning plate, and respectively have a Y-direction positioning surface and a Z-direction positioning surface, wherein the Y-direction positioning surface is adapted to the Y-direction profile of the body skirt, and the Z-direction positioning surface is adapted to the Z-direction profile of the body skirt; the X-direction spacings between the Y-direction positioning surface and the Z-direction positioning surface and the first X-direction positioning surface are respectively consistent with the X-direction spacings between the front end of the body skirt and the corresponding profile of the body skirt corresponding to the corresponding positioning surface; The positioning plate is provided with multiple positioning holes that are compatible with the tightening tool socket head; the X-direction spacing between each positioning hole and the first X-direction positioning surface is consistent with the X-direction spacing between the corresponding installation positions of each self-tapping screw and the front end of the vehicle body skirt; the Z-direction spacing between each positioning hole and the Z-direction positioning surface is consistent with the Z-direction spacing between the corresponding installation positions of each self-tapping screw and the Z-direction profile of the vehicle body skirt corresponding to the Z-direction positioning surface.

2. The automotive self-tapping screw positioning device according to claim 1, characterized in that: The device comprises a lower frame, an upper frame and a locking mechanism; The lower frame comprises a base frame, two first longitudinal beams and two slide rails, the two first longitudinal beams are respectively arranged at two ends of the base frame in the X direction, and the two slide rails are respectively fixed with the two first longitudinal beams through the first connecting plates; The upper frame includes multiple first sliders and two second longitudinal beams, each first slider is connected to the two second longitudinal beams through a second connecting plate; the positioning plate is connected to the two second longitudinal beams through two third connecting plates; the first slider is slidably connected to the corresponding slide rail; the locking mechanism is used to lock the first slider.

3. The automotive self-tapping screw positioning device according to claim 2, characterized in that: The locking mechanism comprises a cross bar, a second slider, a coil spring and a limit structure, and both ends of the cross bar are respectively connected to the two second longitudinal beams through a fourth connecting plate; The second slider includes a plurality of sliders, which are respectively connected to the two slide rails in a sliding manner; the lower end of the coil spring is connected to the second slider and the second longitudinal beam through a fifth connecting plate, and the upper end is connected to the first connecting plate through a sixth connecting plate, and the coil spring is in a stretched state; The limiting structure includes a first limiting plate and a locking pin, the first limiting plate is arranged on the first connecting plate, and a pin seat is arranged on the fourth connecting plate. One end of the locking pin passes through the pin seat, and the other end of the locking pin is connected to a pull rope, and the pull rope is connected to a release handle; when the release handle is squeezed, the locking pin retracts into the pin seat, and when the release handle is released, the locking pin extends out of the pin seat and extends to below the first limiting plate.

4. The automotive self-tapping screw positioning device according to claim 3, characterized in that: The positioning device further comprises a gas spring, a first cross beam is arranged between the two first longitudinal beams, one end of the gas spring is connected to the first cross beam, and the other end is connected to the first sliding block.

5. The automotive self-tapping screw positioning device according to claim 2 or 3, characterized in that: The upper and lower ends of the two slide rails are both provided with second limiting plates.

6. The automotive self-tapping screw positioning device according to claim 1, characterized in that: A reinforcing sleeve is arranged in the positioning hole; preferably, the inner diameter of the reinforcing sleeve is 0.1-0.3 mm larger than the outer diameter of the sleeve head of the tightening tool.

7. The automotive self-tapping screw positioning device according to claim 1, characterized in that: The Y-direction positioning block and the Z-direction positioning block are arranged integrally.

8. The automotive self-tapping screw positioning device according to claim 1 or 7, characterized in that: The Z-direction positioning surface of the Z-direction positioning block is provided with an avoidance groove.

9. The automobile self-tapping screw positioning device according to claim 1, characterized in that: The positioning mechanism also includes a second X-direction positioning block, which is arranged at the rear end of the positioning plate and has a second X-direction positioning surface. The distance between the second X-direction positioning surface and the first X-direction positioning surface is 5-30mm larger than the length of the body skirt.

10. The automobile self-tapping screw positioning device according to claim 2, characterized in that: The lower frame is provided with a storage groove, and two ends of the storage groove are respectively connected to two first longitudinal beams.

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