Automobile container outer plate positioning tool

Abstract

The invention provides an automobile container outer plate positioning tool. The automobile container outer plate positioning tool comprises a front positioning mechanism and a rear positioning mechanism. The front positioning mechanism is positioned and clamped on the door ring assembly, the front positioning mechanism comprises a front positioning frame, the front positioning frame is connected with a first front pressing mechanism, a second front pressing mechanism and a sliding limiting mechanism, the first front pressing mechanism and the second front pressing mechanism are used for pressing the front portion of an outer plate of a side plate of a container, and the sliding limiting mechanism is connected with the front positioning frame. The sliding limiting mechanism is used for limiting the front end of the container side plate outer plate; the rear positioning mechanism is positioned and clamped at the rear part of the container, the rear positioning mechanism comprises a rear positioning frame, the rear positioning frame is connected with a rear pressing structure, and the rear pressing structure is used for pressing the rear part of an outer plate of a side plate of the container. The positioning tool solves the problem that an existing positioning tool for the side plate and the outer plate of the container is insufficient in mounting and positioning precision.

Description

Technical Field

[0001] This invention relates to the field of automobile manufacturing technology, and in particular to a positioning fixture for the outer panel of an automobile cargo box. Background Technology

[0002] The cargo box of a pickup truck is typically welded from multiple sheet metal parts, including the floor, outer side panels, inner side panels, front panel, and rear panel. Among these, the outer side panels are large, thin sheet metal components with complex shapes and poor rigidity. During assembly, they are prone to misalignment, interference, and out-of-tolerance issues due to inaccurate positioning and accumulated tolerances. This directly affects the dimensional accuracy and appearance of the cargo box assembly, thus requiring positioning fixtures for assembly. Existing positioning fixtures for outer side panels are mostly split-type solutions, using only fixed positioning blocks and clamps. This method lacks sufficient positioning accuracy, relying primarily on the external contour for positioning and lacking a precise positioning reference, making it susceptible to inaccurate positioning due to accumulated errors. Therefore, there is a need to invent a high-precision positioning fixture for automotive cargo box outer panels. Summary of the Invention

[0003] The purpose of this invention is to provide a positioning fixture for the outer panel of a car cargo box, which solves the problem of insufficient positioning accuracy in the existing positioning fixtures for the outer panel of the cargo box.

[0004] The technical solution adopted by this invention to solve its technical problem is: A positioning fixture for the outer panel of a car cargo box includes a front positioning mechanism and a rear positioning mechanism; The front positioning mechanism is positioned and clamped on the door ring assembly. The front positioning mechanism includes a front positioning frame, on which a first front pressing mechanism, a second front pressing mechanism, and a sliding limiting mechanism are connected. The first and second front pressing mechanisms are used to press the front part of the outer panel of the cargo box side panel, and the sliding limiting mechanism is used to limit the front end of the outer panel of the cargo box side panel. The rear positioning mechanism is positioned and clamped at the rear of the cargo box. The rear positioning mechanism includes a rear positioning frame, on which a rear clamping structure is connected. The rear clamping structure is used to clamp the rear of the outer side panel of the cargo box.

[0005] Preferably, in conjunction with the above scheme, the front positioning frame is provided with several sets of front positioning pins, front clamping mechanisms, first front pressing mechanisms, and second front pressing mechanisms. The front positioning pins are used to insert into the front positioning holes and rear positioning holes of the vehicle body. The front clamping mechanisms are used to clamp the edge of the door ring assembly. The first front pressing mechanism and the second front pressing mechanism are used to press the front part of the outer panel of the cargo box side panel.

[0006] Preferably, in conjunction with the above scheme, the front clamping mechanism includes a first fixed plate, which is fixedly connected to the front positioning frame. A first clamping cylinder is fixedly connected to the first fixed plate, and a first clamping block is fixedly connected to the clamping arm of the first clamping cylinder. A second clamping block is fixedly connected to the first fixed plate, which is configured corresponding to the first clamping block and cooperates with the first clamping block to clamp the edge of the door ring assembly.

[0007] Preferably, in conjunction with the above scheme, the first front clamping mechanism includes a second fixed plate, which is fixedly connected to the middle right side of the front positioning frame. A second clamping cylinder is fixedly connected to the second fixed plate, and a first pressing plate is fixedly connected to the clamping arm of the second clamping cylinder. First pressing blocks are provided on both the upper and lower sides of the first pressing plate. The first pressing blocks are positioned facing the outer panel of the cargo box side panel and are used to press the upper side and middle position of the front part of the outer panel of the cargo box side panel.

[0008] Preferably, in conjunction with the above scheme, the second front clamping mechanism includes a third fixing plate, which is fixedly connected to the lower right side of the front positioning frame. A third clamping cylinder is fixedly connected to the third fixing plate, and a second clamping block is fixedly connected to the clamping arm of the third clamping cylinder. The second clamping block is positioned towards the outer panel of the cargo box side panel and is used to clamp the lower front side of the outer panel of the cargo box side panel.

[0009] Preferably, in conjunction with the above scheme, several sets of front limiting blocks are also fixedly arranged on the left and right sides of the front positioning frame, wherein two sets of front limiting blocks are located at the middle left and lower left of the front positioning frame, respectively, and are used to press against the hinge mounting boss of the door ring assembly; the other two sets of front limiting blocks are located at the upper right and middle right of the front positioning frame, respectively, and are used to press against the reference surface of the door ring assembly.

[0010] Preferably, in conjunction with the above scheme, the sliding limiting mechanism includes a guide rail arranged along the X direction of the vehicle body, the guide rail being fixedly connected to the front positioning frame, a slider being slidably connected to the guide rail, a limiting bracket being fixedly connected to the slider, and a plurality of first side limiting blocks being fixedly connected to the limiting bracket on the side facing the cargo box, the first side limiting blocks being used to limit the front end of the outer panel of the cargo box side panel; the side of the limiting bracket away from the cargo box being fixedly connected to the piston rod of the electric cylinder, the side wall of the electric cylinder being fixedly connected to the front positioning frame through an electric cylinder fixing plate; and a plurality of second side limiting blocks being fixedly connected to the front positioning frame, the second side limiting blocks being used to limit the movement distance of the limiting bracket.

[0011] Preferably, in conjunction with the above scheme, the rear positioning frame is provided with several sets of rear positioning pins, a first rear clamping mechanism, and a second rear clamping mechanism. The rear positioning pins are used to insert into the taillight positioning holes of the rear pillar assembly of the cargo box. The first rear clamping mechanism is used to clamp the inner side of the rear pillar assembly of the cargo box. The second rear clamping mechanism is used to clamp the inner side of the outer panel of the cargo box side panel.

[0012] Preferably, in conjunction with the above scheme, the first rear clamping mechanism includes a fourth fixing plate fixedly connected to the rear positioning frame, a first clamp fixedly connected to the fourth fixing plate, a third clamping block fixedly connected to the clamping arm of the first clamp, and the third clamping block is used to clamp the inner side of the rear column assembly of the cargo box.

[0013] Preferably, in conjunction with the above scheme, the second rear clamping mechanism includes a fifth fixing plate fixedly connected to the rear positioning frame, a second clamp is fixedly connected to the fifth fixing plate at an angle, and a fourth clamping block is fixedly connected to the clamping arm of the second clamp. The fourth clamping block is used to clamp the inner side of the rear of the cargo box side panel after entering the taillight mounting slot.

[0014] Preferably, in conjunction with the above scheme, the rear clamping structure includes a sixth fixing plate fixedly connected to the rear positioning frame, a seventh fixing plate fixedly connected to the sixth fixing plate, and third clamping blocks fixedly connected to both the upper and lower sides of the seventh fixing plate. The third clamping blocks are used to clamp the outer side of the connecting protrusion on the outer side panel of the cargo box; an eighth fixing plate is fixedly connected to the sixth fixing plate, and fourth clamping blocks are fixedly connected to both the upper and lower sides of the eighth fixing plate. The fourth clamping blocks are used to clamp the rear part of the outer side panel of the cargo box.

[0015] Preferably, in conjunction with the above scheme, a fifth clamping block and a sixth clamping block are fixedly connected to both the upper and lower sides of the rear positioning frame, and the fifth clamping block and the sixth clamping block are used to clamp the rear end of the outer panel of the cargo box side panel.

[0016] Preferably, in conjunction with the above scheme, a seventh clamping block is fixedly connected to both the upper and lower sides of the rear positioning frame, and the seventh clamping block is used to clamp the groove edge of the taillight mounting slot.

[0017] The beneficial effects of this invention are as follows: This invention provides a positioning fixture for the outer panel of a car cargo box. It uses a front positioning mechanism to clamp the outer panel onto the door ring assembly, a first front clamping mechanism and a second front clamping mechanism to clamp the front part of the outer panel, a sliding limiting mechanism to limit the front end of the outer panel, and a rear positioning mechanism to clamp the outer panel at the rear of the cargo box. This simultaneously restricts multiple installation positions of the outer panel, accurately positioning it onto the vehicle body before screwing it in. Through multi-point, multi-directional collaborative positioning and clamping, it effectively solves the problem of high assembly precision for integrated cargo box panels, reduces the accumulation of tolerances caused by welding the vehicle frame, and significantly improves the assembly quality and production efficiency of integrated cargo box pickup trucks.

[0018] The present invention will now be described in more detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0019] Figure 1 This is a front view of the assembly structure of a positioning fixture for the outer panel of a car cargo box and the car body according to the present invention.

[0020] Figure 2 This is an assembly diagram of the front positioning mechanism and the door ring assembly in this invention.

[0021] Figure 3 This is an assembly view of the front positioning mechanism and the door ring assembly from another direction in this invention.

[0022] Figure 4 This is a structural diagram of the rear of a pickup truck cargo box according to the present invention.

[0023] Figure 5 This is an assembly diagram of the rear positioning mechanism and the rear of the cargo box in this invention.

[0024] Figure 6 This is an assembly diagram of the rear positioning mechanism and the rear of the cargo box from another direction in this invention.

[0025] Figure 7 This is an assembly diagram of the rear positioning mechanism and the outer panel of the cargo box side plate in this invention.

[0026] Figure 8 This is a front view of the assembly structure of the rear positioning mechanism and the outer panel of the cargo box side plate in this invention.

[0027] Figure 9 This is a structural diagram of the front positioning mechanism in this invention.

[0028] Figure 10 This is a structural diagram of the front positioning mechanism in this invention from another direction.

[0029] Figure 11 This is a structural diagram of the front positioning frame in this invention.

[0030] Figure 12 This is a structural diagram of the front positioning frame in another direction in this invention.

[0031] Figure 13 This is a structural diagram of the front clamping mechanism in this invention.

[0032] Figure 14 This is a structural diagram of the first front clamping mechanism in this invention.

[0033] Figure 15 This is a structural diagram of the second front clamping mechanism in this invention.

[0034] Figure 16 This is a structural diagram of the sliding limiting mechanism in this invention.

[0035] Figure 17 This is a structural diagram of the sliding limiting mechanism in this invention from another direction.

[0036] Figure 18 This is a structural diagram of the hoisting assembly in this invention.

[0037] Figure 19 This is a structural diagram of the hoisting assembly in this invention from another perspective.

[0038] Figure 20 This is a side view of the hoisting assembly in this invention.

[0039] Figure 21 This is an exploded view of the differential assembly in this invention.

[0040] Figure 22 This is a structural diagram of the hoisting connection assembly in this invention.

[0041] Figure 23 This is a structural diagram of the rear positioning mechanism in this invention.

[0042] Figure 24 This is a structural diagram of the rear positioning mechanism in this invention from another direction.

[0043] Figure 25 This is an exploded view of the rear positioning mechanism in this invention.

[0044] Figure 26 This is an exploded view of the rear positioning mechanism in this invention from another direction.

[0045] Among them, 1. Front positioning mechanism; 2. Rear positioning mechanism; 10. Door ring assembly; 101. Front positioning hole; 102. Rear positioning hole; 103. Hinge mounting boss; 104. Reference surface; 20. Outer panel of cargo box side panel; 30. Rear column assembly of cargo box; 40. Support plate; 50. Inner panel of cargo box side panel; 201. Connecting protrusion; 202. Taillight mounting slot; 301. Taillight positioning hole; 11. Front positioning bracket; 12. Front positioning pin; 13. Front clamping mechanism; 14. First front clamping mechanism; 15. Second front clamping mechanism; 1 6. Front limit block; 17. Sliding limit mechanism; 18. Lifting assembly; 19. Anti-collision plate assembly; 21. Rear positioning frame; 22. Rear positioning pin; 23. First rear clamping mechanism; 24. Second rear clamping mechanism; 25. Rear pressing structure; 26. Fifth pressing block; 27. Sixth pressing block; 28. Seventh pressing block; 28. Seventh pressing block; 131. First fixing plate; 132. First clamping cylinder; 133. First clamping block; 134. Second clamping block; 141. Second fixing plate; 142. Second clamping cylinder; 1 43. First clamping plate; 144. First clamping block; 151. Third fixing plate; 152. Third clamping cylinder; 153. Second clamping block; 171. Guide rail; 172. Slider; 173. Limiting bracket; 174. First side limiting block; 175. Electric cylinder; 176. Electric cylinder fixing plate; 177. Second side limiting block; 181. Adjustment assembly; 182. Lifting rod; 183. Lifting connection assembly; 231. Fourth fixing plate; 232. First clamp; 233. Third clamping block; 241. Fifth fixing plate; 2 42. Second clamp; 243. Fourth clamping block; 251. Sixth fixing plate; 252. Seventh fixing plate; 253. Third pressing block; 254. Eighth fixing plate; 255. Fourth pressing block; 1811. Adjustment frame; 1812. Bearing sleeve; 1813. Bearing; 1814. Limiting pin; 1815. Adjustment plate; 1816. Adjustment connecting plate; 1817. Connecting column; 1818. Spring; 1819. Limiting stud; 1831. Clamping plate; 1832. Lifting connecting plate; 1833. Limiting groove. Detailed Implementation

[0046] like Figure 1 The above describes a positioning fixture for an outer panel of a car cargo box, which includes a front positioning mechanism 1 and a rear positioning mechanism 2. The front positioning mechanism 1 is used to position and clamp onto the door ring assembly 10 of the pickup truck and press against the outer surface of the front part of the cargo box side panel 20. The rear positioning mechanism 2 is used to position and clamp onto the rear part of the cargo box and press against the outer surface of the rear part of the cargo box side panel 20.

[0047] like Figure 2 and Figure 3As shown, the front positioning mechanism 1 is positioned and clamped on the door ring assembly 10. In this embodiment, the door ring assembly 10 is the rear door ring of a pickup truck. The front positioning mechanism 1 includes a front positioning frame 11, on which a first front pressing mechanism 14, a second front pressing mechanism 15, and a sliding limiting mechanism 17 are connected. The first front pressing mechanism 14 and the second front pressing mechanism 15 are used to press the front part of the cargo box side panel outer plate 20, and the sliding limiting mechanism 17 is used to limit the front end of the cargo box side panel outer plate 20. like Figure 5 and Figure 6 As shown, the rear positioning mechanism 2 is positioned and clamped at the rear of the cargo box. The rear positioning mechanism 2 includes a rear positioning frame 21, and a rear pressing structure 25 is connected to the rear positioning frame 21. The rear pressing structure 25 is used to press the rear of the outer panel 20 of the cargo box side panel.

[0048] like Figure 9 and Figure 10 As shown, the front positioning frame 11 is equipped with several sets of front positioning pins 12, a front clamping mechanism 13, a first front pressing mechanism 14, and a second front pressing mechanism 15. In this embodiment, two sets of positioning pins 12 are provided. One set of front positioning pins 12 is used to insert into the front positioning hole 101 of the door ring assembly 10, and the other set of positioning pins 12 is used to insert into the rear positioning hole 102 of the rear part of the side panel. The front clamping mechanism 13 is used to clamp the edge of the door ring assembly 10, and the first front pressing mechanism 14 and the second front pressing mechanism 15 are used to press the front part of the cargo box side panel 20. Since the front part of the cargo box side panel 20 has a defined gap surface difference requirement, the first front pressing mechanism 14 is used to press the upper side of the front part of the cargo box side panel 20, while the second front pressing mechanism 15 is used to press the lower side of the front part of the cargo box side panel 20. By clamping the upper and lower sides of the cargo box side panel 20, the appearance requirements of the cargo box side panel 20 are ensured.

[0049] like Figure 13As shown, the front clamping mechanism 13 includes a first fixing plate 131, which is fixedly connected to the front positioning frame 11. A first clamping cylinder 132 is fixedly connected to the first fixing plate 131, specifically, the first fixing plate 131 and the side wall of the first clamping cylinder 132 are fixedly connected by screws. A first clamping block 133 is fixedly connected to the clamping arm of the first clamping cylinder 132. A second clamping block 134 is fixedly connected to the first fixing plate 131, and the second clamping block 134 is set corresponding to the first clamping block 132 and cooperates with the first clamping block 132 to clamp the edge of the door ring assembly 10. In this embodiment, the front clamping mechanism 13 is provided with four sets, two of which are used to clamp the upper and lower sides of the front of the door ring assembly 10, and the other two sets are used to clamp the upper and lower sides of the rear of the door ring assembly 10. The four sets of front clamping mechanisms 13 can firmly fix the front positioning frame 11 to the door ring assembly 10, preventing the front positioning frame 11 from loosening and falling off.

[0050] like Figure 14 As shown, the first front clamping mechanism 14 includes a second fixed plate 141, which is fixedly connected to the middle right side of the front positioning frame 11. A second clamping cylinder 142 is fixedly connected to the second fixed plate 141, and a first pressing plate 143 is fixedly connected to the clamping arm of the second clamping cylinder 142. A set of first pressing blocks 144 are provided on both the upper and lower sides of the first pressing plate 143. The first pressing blocks 144 are positioned facing the outer side panel 20 of the cargo box. The two sets of first pressing plates 143 are used to press the upper side and the middle position of the front part of the outer side panel 20 of the cargo box, respectively. The first pressing block 144 has a contoured surface on the side facing the outer side panel 20 of the cargo box. This contoured surface is an inclined or curved surface adapted to the outer side of the outer side panel 20 of the cargo box. The first clamping block 144 is used to press the upper front and middle areas of the cargo box side panel 20 to ensure the appearance accuracy of the cargo box side panel 20 and the matching area of ​​the rear door. The first clamping block 144 has a non-metallic elastic buffer layer (such as polyurethane, nylon, etc.) to prevent scratches on the surface of the cargo box side panel 20 and to provide flexible clamping force.

[0051] like Figure 15As shown, the second front clamping mechanism 15 includes a third fixing plate 151, which is fixedly connected to the lower right side of the front positioning frame 11. A third clamping cylinder 152 is fixedly connected to the third fixing plate 151, and a second clamping block 153 is fixedly connected to the clamping arm of the third clamping cylinder 152. The second clamping block 153 is positioned facing the outer side panel 20 of the cargo box and is used to clamp the lower front side of the outer side panel 20. The side of the second clamping block 153 facing the outer side panel 20 of the cargo box also has a contoured surface, which is an inclined or curved surface adapted to the outer side of the outer side panel 20 of the cargo box. By clamping the lower front area of ​​the outer side panel 20 of the cargo box with the second clamping block 153, the appearance accuracy of the matching area between the outer side panel 20 of the cargo box and the rear door is ensured.

[0052] like Figures 9 to 12 As shown, several sets of front limiting blocks 16 are fixedly arranged on the left and right sides of the front positioning frame 11. In this embodiment, four sets of front limiting blocks 16 are provided. Two sets of front limiting blocks 16 are located at the middle left and lower left of the front positioning frame 11, respectively, and are used to press against the hinge mounting boss 103 of the door ring assembly 10. The positioning accuracy at the hinge mounting boss 103 is relatively high. The other two sets of front limiting blocks 16 are located at the upper right and middle right of the front positioning frame 11, respectively, and are used to press against the reference surface 104 of the door ring assembly 10. The positioning accuracy at the reference surface 104 is also relatively high. The four sets of front limiting blocks 16 can limit the Y-axis distance between the tooling and the vehicle body, achieving precise positioning and limiting functions.

[0053] like Figure 16 and Figure 17 As shown, the sliding limiting mechanism 17 includes a guide rail 171 arranged along the X direction of the vehicle body. The guide rail 171 is fixedly connected to the front positioning frame 11. A slider 172 is slidably connected to the guide rail 171. A limiting bracket 173 is fixedly connected to the slider 172. Several sets of L-shaped first side limiting blocks 174 are fixedly connected to the side of the limiting bracket 173 facing the cargo box. The first side limiting blocks 174 are used to limit the front end of the cargo box side panel 20. In this embodiment, three sets of first side limiting blocks 174 are provided, located on the upper, middle and lower sides of the limiting bracket 173 respectively. The side of the limiting bracket 173 away from the cargo box is fixedly connected to the piston rod of the electric cylinder 175. The side wall of the electric cylinder 175 is fixedly connected to the front positioning frame 11 through the electric cylinder fixing plate 176. After the front positioning bracket 11 is fixed to the vehicle body, the electric cylinder 175 is started. The piston rod drives the limiting bracket 173 and the three sets of limiting brackets 173 to move in the rear direction of the vehicle, thereby restricting the installation position of the front end of the cargo box side panel 20, that is, restricting the X-direction installation position of the cargo box side panel 20.

[0054] like Figure 16 and Figure 17 As shown, several sets of U-shaped second-side limiting blocks 177 are fixedly connected to the front positioning frame 11. The second-side limiting blocks 177 are used to limit the movement distance of the limiting bracket 173. In this embodiment, two sets of second-side limiting blocks 177 are provided to ensure uniform force and structural stability. When the piston rod of the electric cylinder 175 drives the limiting bracket 173 to move a certain distance in the rear direction of the vehicle, it is blocked by the second-side limiting blocks 177 and stops moving further.

[0055] As shown in the figure, such as 18 to Figure 20 As shown, to facilitate moving this tooling to a position near the door ring assembly 10 using a lifting device, a lifting assembly 18 is connected to the side of the front positioning frame 11 away from the vehicle interior. The lifting assembly 18 includes an adjustment assembly 181, which is screwed to the front positioning frame 11. An L-shaped lifting rod 182 is fixedly connected to the upper end of the adjustment assembly 181, and a lifting connection assembly 183 is fixedly connected to the upper part of the lifting rod 182. The lifting connection assembly 183 is used to connect to the lifting device via a screw connection. By setting up the lifting assembly 18, installation tolerances can be adjusted, and manpower can be saved.

[0056] like Figure 21 As shown, to facilitate the adjustment of tolerances during tooling and vehicle body installation and positioning, the adjustment assembly 181 includes an adjustment frame 1811 fixedly connected to the lifting rod 182. The adjustment frame 1811 has a U-shaped structure, consisting of two sets of frame side plates and one set of frame top plates. The frame top plate has insertion slots on both sides to facilitate insertion and assembly with the insertion bosses at the upper end of the frame side plates. After assembly, it can be fixed by welding. A bearing sleeve 1812 is fixedly connected to the adjustment frame 1811. The bearing sleeve 1812 has bearing holes along the Y-direction of the vehicle body. Two sets of bearings 1813 are installed in the bearing holes. The inner ring of the bearing 1813 is fixedly connected to a limiting pin 1814. The limiting pin 1814 is connected to the adjustment plate 1812. A fixed connection is established at 815. A differential adjustment connecting plate 1816 is fixedly installed on the side of the differential adjustment plate 1815 away from the vehicle interior. A set of connecting posts 1817 are fixedly installed on both opposite sides of the differential adjustment connecting plate 1816. One end of the connecting post 1817 passes through a spring 1818, and the other end of the spring 1818 passes through a limiting stud 1819. The end of the limiting stud 1819 facing the connecting post 1817 also has a connecting post structure. The other end of the spring 1818 is sleeved on this connecting post structure. A limiting retaining ring is also provided on the limiting stud 1819 to limit the spring 1818. The two sets of limiting studs 1819 are fixedly connected to both sides of the differential adjustment frame 1811 via threads and tightened with nuts.

[0057] When the current positioning frame 11 drives the adjustment plate 1815 to rotate clockwise or counterclockwise at a small angle, the connecting column 1817 will also rotate and force the spring 1818 on one side to deform. Since the limiting pin 1814 is fixedly connected to the adjustment frame 1811, the limiting pin 1814 plays the role of rotation limiting.

[0058] When the lifting device moves the tooling close to the door ring assembly 10, the positioning pins on the front positioning frame 11 are manually inserted into the positioning holes of the vehicle body. Since the front positioning frame 11 may have a slight tilt angle during lifting, the front positioning frame 11 can be manually rotated clockwise or counterclockwise by a small angle through the adjustment assembly 181 so that the positioning pins on the front positioning frame 11 can be accurately inserted into the positioning holes of the vehicle body.

[0059] like Figure 22 As shown, to facilitate the assembly of the tooling and the lifting device, the lifting connection assembly 183 includes two sets of parallel clamping plates 1831. Each set of clamping plates 1831 has several bolt holes. The clamping plates 1831 are used to clamp the upper part of the lifting rod 182. The clamping plates 1831 clamp the lifting rod 182 after being connected by bolts. The upper end of the clamping plates 1831 is connected to a lifting connecting plate 1832. The upper end of the lifting connecting plate 1832 is provided with several sets of limiting grooves 1833. The limiting grooves 1833 are used to match and limit the limiting boss at the lower end of the lifting device. The lifting connecting plate 1832 is also provided with several sets of bolt holes and is detachably fixed to the lifting device by bolts.

[0060] like Figure 3 , Figure 11 and Figure 12 As shown, to prevent hard collision damage during the assembly of the tooling with the vehicle body, several sets of anti-collision plate assemblies 19 are fixedly connected to the front side and the lower end of the front positioning frame 11. Rubber pads are fixedly connected to the side of each anti-collision plate assembly 19 facing the inner edge of the door ring assembly 10. Specifically, one set of anti-collision plate assemblies 19 is fixedly connected to the front side of the front positioning frame 11, and two sets of anti-collision plate assemblies 19 are also fixedly connected to the lower end of the front positioning frame 11. Since the front positioning mechanism 1 has a certain weight, the anti-collision plate assemblies 19 are mainly used to prevent collision damage to the inner edge sheet metal of the door ring assembly 10 when the front positioning mechanism 1 is hoisted to the door ring assembly 10 and when the front positioning mechanism 1 is assembled with the vehicle body.

[0061] like Figure 4As shown, in this embodiment, the rear of the pickup truck's cargo box is provided with a rear pillar assembly 30 and a support plate 40. The rear pillar assembly 30 is provided with two sets of taillight positioning holes 301, and a taillight mounting groove 202 is provided at the rear of the outer panel 2 of the cargo box side panel, as well as two sets of connecting protrusions 201. The support plate 40 is fixedly connected to the outer side of the rear pillar assembly 30 (i.e., the side facing outwards from the vehicle).

[0062] like Figures 5 to 8 ,as well as Figure 23 and Figure 24 As shown, the rear positioning frame 21 is equipped with several sets of rear positioning pins 22, a first rear clamping mechanism 23, and a second rear clamping mechanism 24. The rear positioning pins 22 are inserted into the taillight positioning holes 301 of the rear column assembly 30 of the cargo box. The first rear clamping mechanism 23 is used to clamp the inner side of the rear column assembly 30 of the cargo box. The second rear clamping mechanism 24 is used to clamp the inner side of the outer panel 2 of the cargo box side panel. In this embodiment, two sets of positioning pins 22 are provided, which are respectively inserted into the upper and lower sets of taillight positioning holes 301 of the rear column assembly 30. Two sets of the first rear clamping mechanism 23 are provided, located on the upper and lower sides of the rear positioning frame 21, respectively, for clamping the inner side of the rear column assembly 30 of the cargo box. Two sets of the second rear clamping mechanism 24 are provided, respectively, for clamping the upper and lower sides of the inner rear side of the outer panel 2 of the cargo box side panel. After the tooling is basically positioned by the rear positioning pin 22, it is clamped by the first rear clamping mechanism 23 and the second rear clamping mechanism 24, which can firmly fix the rear positioning frame 21 to the rear of the cargo box and prevent the rear positioning frame 21 from loosening and falling off.

[0063] like Figure 25 and Figure 26 As shown, the first rear clamping mechanism 23 includes a fourth fixing plate 231 fixedly connected to the rear positioning frame 21. The fourth fixing plate 231 has an L-shaped structure. A first clamp 232 is fixedly connected to the fourth fixing plate 231. A third clamping block 233 is fixedly connected to the clamping arm of the first clamp 232. The third clamping block 233 is used to clamp the inner side of the rear column assembly 30 of the cargo box, or in other words, to clamp the side of the rear column assembly 30 facing the vehicle interior.

[0064] like Figure 25 and Figure 26As shown, the second rear clamping mechanism 24 includes a fifth fixing plate 241 fixedly connected to the rear positioning frame 21. The upper end of the fifth fixing plate 241 is provided with a downwardly inclined mounting surface. A second clamp 242 is obliquely fixedly connected to the fifth fixing plate 241. A fourth clamping block 243 is fixedly connected to the clamping arm of the second clamp 242. The fourth clamping block 243 is used to enter the taillight mounting slot 202 and clamp the inner side of the rear of the cargo box side panel outer plate 2. The fourth clamping block 243 can be fixed to the clamping arm of the second clamp 242 by a set of L-shaped connecting blocks. Due to the presence of the mounting surface on the fifth fixing plate 241, both the fourth clamping block 243 and the second clamp 242 are obliquely arranged. When the handle of the second clamp 242 is pushed, the fourth clamping block 243 enters the taillight mounting slot 202, thereby clamping the inner side of the rear area of ​​the cargo box side panel outer plate 2.

[0065] like Figure 25 and Figure 26 As shown, the rear clamping structure 25 includes a sixth fixing plate 251 fixedly connected to the rear positioning frame 21. The sixth fixing plate 251 has a Z-shaped structure. A seventh fixing plate 252 with a straight structure is fixedly connected to the sixth fixing plate 251. A set of third clamping blocks 253 are fixedly connected to both the upper and lower sides of the seventh fixing plate 252. The two sets of third clamping blocks 253 are used to clamp the outer sides of two sets of connecting protrusions 201 on the outer side panel 20 of the cargo box. Since the connecting protrusions 201 are fixedly connected to a support plate 40 at the rear of the cargo box by screws, and the support plate 40 is fixedly connected to the outer side of the rear column assembly 30, the third clamping blocks 253 have sufficient force points when clamping the connecting protrusions 201. An eighth fixing plate 254 is fixedly connected to the sixth fixing plate 251. A fourth clamping block 255 is fixedly connected to both the upper and lower sides of the eighth fixing plate 254. The fourth clamping block 255 is used to clamp the rear of the outer side panel 20 of the cargo box. The fourth clamping block 255 has a contoured surface on the side facing the outer panel 20 of the cargo box side panel. This contoured surface is an inclined or curved surface adapted to the outer side of the outer panel 20. By clamping the upper and lower sides of the rear of the outer panel 20 with the fourth clamping block 255, the outer panel 20 can be prevented from loosening or falling off. The fourth clamping block 255 is also provided with a non-metallic elastic buffer layer (such as polyurethane, nylon, etc.) to prevent scratching the surface of the outer panel 20 and to provide a flexible clamping force.

[0066] To better coordinate with the second rear clamping mechanism 24 in clamping the rear area of ​​the outer side panel 2 of the cargo box, a fifth clamping block 26 and a sixth clamping block 27 are fixedly connected to both the upper and lower sides of the rear positioning frame 21. The fifth clamping block 26 and the sixth clamping block 27 are used to clamp the rear end of the outer side panel 20 of the cargo box. The two sets of fifth clamping blocks 26 are symmetrically arranged, and the two sets of sixth clamping blocks 27 are also symmetrically arranged to ensure uniform force distribution and assembly accuracy.

[0067] To better coordinate with the second rear clamping mechanism 24, the fifth clamping block 26, and the sixth clamping block 27 to clamp and limit the rear area of ​​the outer panel 2 of the cargo box side panel, a set of seventh clamping blocks 28 are fixedly connected to both the upper and lower sides of the rear positioning frame 21. The seventh clamping blocks 28 are used to press the groove edge of the taillight mounting slot 202. Specifically, the seventh clamping block 28 on the upper side of the rear positioning frame 21 is used to support and limit the upper groove edge of the taillight mounting slot 202, and the seventh clamping block 28 on the lower side of the rear positioning frame 21 is used to limit the lower groove edge of the taillight mounting slot 202, ensuring the Z-axis installation accuracy of the tooling.

[0068] How to use this tooling invention: 1. First, use a lifting tool to move the front positioning mechanism 1 close to the door ring assembly 10. Insert the two sets of front positioning pins 12 on the front positioning mechanism 1 into the front positioning hole 101 and the rear positioning hole 102 of the vehicle body. Then, activate the front clamping mechanism 13 to clamp the edge of the door ring assembly 10. At the same time, make the front limit block 16 press on the hinge mounting boss 103 and the reference surface 104 to complete the fixation and limiting of the front positioning mechanism 1 itself. 2. Start the electric cylinder 175 to drive the limit bracket 173 and the first side limit block 174 to move towards the rear of the vehicle until the first side limit block 174 moves to the limited position; 3. Place the outer side panel 20 of the cargo box against the inner side panel 50 of the cargo box, so that the upper edge of the outer side panel 20 overlaps with the upper edge of the inner side panel 50 of the cargo box, and at the same time, let the front end of the outer side panel 20 of the cargo box press against the first side limiting block 174. 4. Activate the first front clamping mechanism 14 and the second front clamping mechanism 15. The second clamping cylinder 142 drives the first clamping plate 143 to rotate at a certain angle, so that the first clamping plate 143 presses the upper side and the middle position of the front outer side of the cargo box side panel 20 respectively. The third clamping cylinder 152 drives the second clamping block 153 to rotate at a certain angle, so that the first clamping plate 143 presses the lower area of ​​the front outer side of the cargo box side panel 20. At this time, the front of the cargo box side panel 20 is fixed. 5. Assemble the rear positioning mechanism 2 at the rear of the cargo box, insert the rear positioning pin 22 into the taillight positioning hole 301, and then operate the first rear clamping mechanism 23 and the second rear clamping mechanism 24 to clamp the inner side of the rear column assembly 30 of the cargo box and the inner side of the outer panel 2 of the cargo box side plate, respectively. At this time, the fifth clamping block 26 and the sixth clamping block 27 complete the clamping and clamping limit of the rear area of ​​the outer panel 2 of the cargo box side plate, and the seventh clamping block 28 also clamps the groove edge of the taillight mounting groove 202; at the same time, the fourth clamping block 255 also clamps on the outer side surface of the rear of the outer panel 20 of the cargo box side plate, and the rear of the outer panel 20 of the cargo box side plate is now fixed. 6. After completing the precise positioning of the entire tooling and the outer panel 20 of the cargo box side panel, the outer panel 20 of the cargo box side panel and the inner panel 50 of the cargo box side panel are finally fixed together with bolts to complete the precise assembly.

[0069] In the description of this invention, it should be understood that terms such as "center," "longitudinal," "lateral," "vertical," "horizontal," "upper," "lower," "front," "rear," "left," "right," "bottom," "inner," "outer," "top," "one end," "one side," "both ends," "both sides," "clockwise," and "counterclockwise," indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. For example, in the description of this invention, "inner side" represents the side facing the direction of the vehicle interior, "outer side" represents the side facing the direction of the vehicle exterior, "front side" represents the side facing the direction of the vehicle front, and "rear side" represents the side facing the direction of the vehicle rear.

[0070] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this patent, unless otherwise stated, "a plurality of" means two or more.

[0071] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0072] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any improvements made using the inventive concept and technical solution of the present invention, or direct applications in other situations, fall within the protection scope of the present invention.

Claims

1. A positioning fixture for the outer panel of a car cargo box, characterized in that, Includes a front positioning mechanism (1) and a rear positioning mechanism (2); The front positioning mechanism (1) is positioned and clamped on the door ring assembly (10). The front positioning mechanism (1) includes a front positioning frame (11). The front positioning frame (11) is connected to a first front pressing mechanism (14), a second front pressing mechanism (15), and a sliding limiting mechanism (17). The first front pressing mechanism (14) and the second front pressing mechanism (15) are used to press the front part of the cargo box side panel (20). The sliding limiting mechanism (17) is used to limit the front end of the cargo box side panel (20). The rear positioning mechanism (2) is positioned and clamped at the rear of the cargo box. The rear positioning mechanism (2) includes a rear positioning frame (21), and a rear pressing structure (25) is connected to the rear positioning frame (21). The rear pressing structure (25) is used to press the rear of the outer panel (20) of the side panel of the cargo box.

2. The positioning fixture for the outer panel of a car cargo box according to claim 1, characterized in that, The front positioning frame (11) is provided with several sets of front positioning pins (12), front clamping mechanisms (13), first front pressing mechanisms (14), and second front pressing mechanisms (15). The front positioning pins (12) are used to insert into the front positioning holes (101) and rear positioning holes (102) of the vehicle body. The front clamping mechanisms (13) are used to clamp the edge of the door ring assembly (10). The first front pressing mechanisms (14) and the second front pressing mechanisms (15) are used to press the front of the cargo box side panel outer plate (20).

3. The positioning fixture for the outer panel of the vehicle cargo box according to claim 2, characterized in that, The front clamping mechanism (13) includes a first fixing plate (131), which is fixedly connected to the front positioning frame (11). A first clamping cylinder (132) is fixedly connected to the first fixing plate (131), and a first clamping block (133) is fixedly connected to the clamping arm of the first clamping cylinder (132). A second clamping block (134) is fixedly connected to the first fixing plate (131), which is set corresponding to the first clamping block (132) and cooperates with the first clamping block (132) to clamp the edge of the door ring assembly (10).

4. The positioning fixture for the outer panel of the vehicle cargo box according to claim 2, characterized in that, The first front clamping mechanism (14) includes a second fixed plate (141), which is fixedly connected to the middle right side of the front positioning frame (11). A second clamping cylinder (142) is fixedly connected to the second fixed plate (141), and a first pressing plate (143) is fixedly connected to the clamping arm of the second clamping cylinder (142). A first pressing block (144) is provided on both the upper and lower sides of the first pressing plate (143). The first pressing block (144) is positioned facing the outer panel of the cargo box side panel (20) and is used to press the upper side and middle position of the front of the outer panel of the cargo box side panel (20).

5. The positioning fixture for the outer panel of the vehicle cargo box according to claim 2, characterized in that, The second front clamping mechanism (15) includes a third fixing plate (151), which is fixedly connected to the lower right side of the front positioning frame (11). A third clamping cylinder (152) is fixedly connected to the third fixing plate (151), and a second clamping block (153) is fixedly connected to the clamping arm of the third clamping cylinder (152). The second clamping block (153) is positioned facing the outer side panel (20) of the cargo box and is used to clamp the lower front side of the outer side panel (20) of the cargo box.

6. The positioning fixture for the outer panel of a car cargo box according to claim 1, characterized in that, The sliding limiting mechanism (17) includes a guide rail (171) arranged along the X direction of the vehicle body. The guide rail (171) is fixedly connected to the front positioning frame (11). A slider (172) is slidably connected to the guide rail (171). A limiting bracket (173) is fixedly connected to the slider (172). Several sets of first side limiting blocks (174) are fixedly connected to the side of the limiting bracket (173) facing the cargo box. The first side limiting blocks (174) are used to limit the front end of the outer panel (20) of the cargo box side panel. The side of the limiting bracket (173) away from the cargo box is fixedly connected to the piston rod of the electric cylinder (175). The side wall of the electric cylinder (175) is fixedly connected to the front positioning frame (11) through the electric cylinder fixing plate (176). Several sets of second side limiting blocks (177) are fixedly connected to the front positioning frame (11). The second side limiting blocks (177) are used to limit the movement distance of the limiting bracket (173).

7. The positioning fixture for the outer panel of a car cargo box according to claim 1, characterized in that, The rear positioning frame (21) is provided with several sets of rear positioning pins (22), a first rear clamping mechanism (23), and a second rear clamping mechanism (24). The rear positioning pins (22) are used to insert into the taillight positioning hole (301) of the rear column assembly (30) of the cargo box. The first rear clamping mechanism (23) is used to clamp the inner side of the rear column assembly (30) of the cargo box. The second rear clamping mechanism (24) is used to clamp the inner side of the outer plate (2) of the side plate of the cargo box.

8. The positioning fixture for the outer panel of a car cargo box according to claim 7, characterized in that, The first rear clamping mechanism (23) includes a fourth fixing plate (231) fixedly connected to the rear positioning frame (21). A first clamp (232) is fixedly connected to the fourth fixing plate (231). A third clamping block (233) is fixedly connected to the clamping arm of the first clamp (232). The third clamping block (233) is used to clamp the inner side of the rear column assembly (30) of the cargo box.

9. The positioning fixture for the outer panel of a car cargo box according to claim 7, characterized in that, The second rear clamping mechanism (24) includes a fifth fixing plate (241) fixedly connected to the rear positioning frame (21). A second clamp (242) is fixedly connected to the fifth fixing plate (241) at an angle. A fourth clamping block (243) is fixedly connected to the clamping arm of the second clamp (242). The fourth clamping block (243) is used to clamp the inner side of the rear of the cargo box side panel (2) after entering the taillight mounting slot (202).

10. The positioning fixture for the outer panel of a car cargo box according to claim 1, characterized in that, The rear clamping structure (25) includes a sixth fixing plate (251) fixedly connected to the rear positioning frame (21), a seventh fixing plate (252) fixedly connected to the sixth fixing plate (251), and a third clamping block (253) fixedly connected to both the upper and lower sides of the seventh fixing plate (252). The third clamping block (253) is used to clamp the outer side of the connecting protrusion (201) on the outer panel (20) of the cargo box side panel. An eighth fixing plate (254) is fixedly connected to the sixth fixing plate (251), and a fourth clamping block (255) fixedly connected to both the upper and lower sides of the eighth fixing plate (254). The fourth clamping block (255) is used to clamp the rear part of the outer panel (20) of the cargo box side panel.

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