A welding and positioning fixture for a vehicle roof frame and its slide table

Abstract

This utility model provides a welding positioning fixture and its slide for a vehicle roof frame, belonging to the technical field of welding auxiliary equipment for fixing or positioning workpieces. The slide includes a slide body and a longitudinal beam positioning module mounted on the slide body. The longitudinal beam positioning module has a downward-facing, longitudinally penetrating positioning groove. The slide body is equipped with a positioning mechanism, which includes a positioning rod extending longitudinally and used to engage with the positioning groove to position the lateral position of the longitudinal beam positioning module when it moves from top to bottom. The positioning mechanism also includes a telescopic clamping device, which includes a clamping part that can automatically extend and retract longitudinally to clamp and fix the longitudinal beam positioning module onto the positioning mechanism. Using the slide of this utility model, manual disassembly and assembly of nuts is unnecessary, and the clamping part of the telescopic clamping device operates automatically, resulting in higher work efficiency.

Description

Technical Field

[0001] This utility model relates to a welding positioning fixture for a vehicle roof frame and its slide, belonging to the technical field of welding auxiliary equipment for fixing or positioning workpieces. Background Technology

[0002] The structure of the existing vehicle roof frame is as follows Figure 1 As shown, it includes a top crossbeam 100, side longitudinal beams 200, and small longitudinal beams 300. There are two side longitudinal beams 200, which are located at the edges of the two ends in the transverse direction. Multiple top crossbeams 100 are arranged at intervals in the longitudinal direction. Each top crossbeam 100 is an arched structure, and its two ends are supported on the side longitudinal beams 200 and welded to the side longitudinal beams 200. Multiple small longitudinal beams 300 are provided, which are located between two adjacent top crossbeams 100, and their two ends are welded to the top crossbeams 100.

[0003] During the welding process of the top cover frame, tooling is required to position the top crossbeam, side longitudinal beams, and small longitudinal beams. For example, a flexible tooling for welding the top cover, disclosed in Chinese invention patent application CN118595714A, includes a mother mold and a sub-mold. The mother mold includes a base, a linear slide rail, a slide table, and a side beam clamp. The linear slide rail is longitudinally mounted on the base, and the slide table can slide along the linear slide rail. The sub-mold is mounted on the slide table and includes a positioning module and positioning plates. The positioning module is detachably mounted on the slide table body. The positioning module has several positioning blocks spaced laterally, and the positioning blocks are provided with slots. Each positioning module has a detachable positioning plate on each of its longitudinal sides, and each positioning plate has several slots.

[0004] When the aforementioned tooling is in use, the slots on the positioning plate (i.e., the small longitudinal beam positioning slots) allow the small longitudinal beams to engage, thus positioning their lateral position. The positioning module has side longitudinal beam positioning slots at both ends of its lateral side, allowing the side longitudinal beams to engage and their lateral position to be positioned. The positioning plate and the positioning module together form the longitudinal beam positioning module. Simultaneously, positioning for different vehicle lengths within the same series can be achieved through the movement of the slide table. Changing the longitudinal beam positioning module can accommodate width variations between different vehicle series, and changing the positioning plate allows for positioning for different vehicle models.

[0005] The slide body has a locating pin on its top surface and a connecting plate at the bottom of the positioning module. The connecting plate has a pin hole for fitting over the locating pin to position the positioning module. A T-screw is located beside the locating pin, and the connecting plate has an arc-shaped notch on its side. When the connecting plate is fitted over the locating pin, the T-screw fits perfectly into the arc-shaped notch, and then a wing nut is connected to secure the positioning module.

[0006] It is evident that the existing longitudinal beam positioning module requires manual installation and removal of nuts during replacement, resulting in low work efficiency. In particular, the large number of slides makes the overall operation time-consuming, impacting the manufacturing efficiency of the top cover frame. Utility Model Content

[0007] The purpose of this utility model is to provide a slide table for welding and positioning fixtures for vehicle roof frames, so as to solve the problem of low efficiency caused by the need for manual disassembly and assembly of nuts when replacing the longitudinal beam positioning module in existing fixtures; the purpose of this utility model is also to provide a welding and positioning fixture for vehicle roof frames, so as to solve the above problems.

[0008] To achieve the above objectives, the slide of the vehicle roof frame welding positioning fixture in this utility model adopts the following technical solution:

[0009] A slide table for welding and positioning a vehicle roof frame includes a slide table body and a longitudinal beam positioning module mounted on the slide table body. The longitudinal beam positioning module has a positioning groove with an opening facing downward and extending longitudinally. The slide table body is provided with a positioning mechanism. The positioning mechanism includes a positioning rod extending longitudinally and used to engage in the positioning groove to position the lateral position of the longitudinal beam positioning module when it moves from top to bottom. The positioning mechanism also includes a telescopic pressing device, which includes a pressing part that can automatically extend and retract longitudinally to press and fix the longitudinal beam positioning module on the positioning mechanism.

[0010] The beneficial effects of the above technical solution are as follows: This utility model is an improved invention. The longitudinal beam positioning module has a downward-facing, longitudinally penetrating positioning groove. The slide body has a positioning mechanism, which includes a positioning rod extending longitudinally and a telescopic clamping device. This device includes a clamping part that can automatically extend and retract longitudinally. When installing the longitudinal beam positioning module, it is moved from top to bottom, causing the positioning rod to engage in the positioning groove, thus positioning the longitudinal beam positioning module laterally. Then, the clamping part of the telescopic clamping device is controlled to press and fix the longitudinal beam positioning module onto the positioning mechanism, thus securing the module. When disassembling the longitudinal beam positioning module, the clamping part of the telescopic clamping device is first controlled to release the clamping action, allowing the module to be removed. Therefore, the slide using this utility model eliminates the need for manual installation and removal of nuts, as the clamping part of the telescopic clamping device operates automatically, resulting in higher work efficiency.

[0011] Furthermore, the longitudinal beam positioning module is provided with longitudinally penetrating positioning holes on both sides of the positioning groove. The positioning mechanism includes a central positioning mechanism and side positioning mechanisms located on both sides of the central positioning mechanism. The positioning rod and the telescopic pressing device are both set on the central positioning mechanism. The side positioning mechanisms on both sides include telescopic positioning devices. The telescopic end of the telescopic positioning device is connected to a positioning pin that can automatically extend and retract longitudinally to be inserted into the corresponding positioning hole.

[0012] Furthermore, both sides of the side positioning mechanism include a support surface for supporting the longitudinal beam positioning module.

[0013] Furthermore, the positioning hole is an elongated hole extending laterally.

[0014] Furthermore, the longitudinal beam positioning module includes a base plate, which includes a base plate body, a central plate body detachably mounted on the base plate body, and side plates located on both sides of the central plate body in the lateral direction. The central plate body is provided with the positioning groove, and the side plates body is provided with the positioning hole.

[0015] Furthermore, an outwardly flared guide slope is provided at the lower end of the positioning groove.

[0016] Furthermore, the central positioning mechanism includes two central positioning plates arranged laterally at intervals, the positioning rod being located between the two central positioning plates, each central positioning plate including a central mounting groove with an upward opening and a transverse through-hole for the longitudinal beam positioning module to be assembled into, the outer shell of the telescopic pressing device being fixed on the two central positioning plates, the pressing part being a pressing pin fixed on the telescopic end of the telescopic pressing device, the pressing pin being located between the two central positioning plates and above the positioning rod.

[0017] Furthermore, the side positioning mechanism includes two side positioning plates arranged laterally at intervals. Each side positioning plate includes a side mounting groove with an upward opening and a transverse through-hole for the longitudinal beam positioning module to be assembled. The outer shell of the telescopic positioning device is fixed on the two side positioning plates, and the positioning pin is located between the two side positioning plates.

[0018] Furthermore, two longitudinal beam positioning modules are independently set and arranged at intervals along the longitudinal direction. Each longitudinal beam positioning module is equipped with a central positioning mechanism and a side positioning mechanism. A clamping mechanism for positioning and clamping the top crossbeam is set on the slide body between the two longitudinal beam positioning modules.

[0019] To achieve the above objectives, the vehicle roof frame welding and positioning fixture of this utility model adopts the following technical solution:

[0020] A welding and positioning fixture for a vehicle roof frame includes a base and at least one movable slide mounted on the base. The slide includes a slide body and a longitudinal beam positioning module mounted on the slide body. The longitudinal beam positioning module has a positioning groove with an opening facing downward and extending longitudinally. The slide body has a positioning mechanism, which includes a positioning rod extending longitudinally and used to engage with the positioning groove to position the lateral position of the longitudinal beam positioning module when it moves from top to bottom. The positioning mechanism also includes a telescopic clamping device, which includes a clamping part that can automatically extend and retract longitudinally to clamp and fix the longitudinal beam positioning module on the positioning mechanism.

[0021] The beneficial effects of the above technical solution are as follows: This utility model is an improved invention. The longitudinal beam positioning module of the slide table has a downward-facing, longitudinally penetrating positioning groove. A positioning mechanism is provided on the slide table body. The positioning mechanism includes a positioning rod extending longitudinally and a telescopic clamping device. The telescopic clamping device includes a clamping part that can automatically extend and retract longitudinally. Thus, when installing the longitudinal beam positioning module, the module is moved from top to bottom, causing the positioning rod to engage in the positioning groove, achieving lateral positioning of the longitudinal beam positioning module. Then, the clamping part of the telescopic clamping device is controlled to press and fix the longitudinal beam positioning module onto the positioning mechanism, thus fixing the longitudinal beam positioning module. When disassembling the longitudinal beam positioning module, the clamping part of the telescopic clamping device is first controlled to release the clamping action, after which the longitudinal beam positioning module can be removed. Therefore, the slide table using this utility model eliminates the need for manual installation and removal of nuts, as the clamping part of the telescopic clamping device operates automatically, resulting in higher work efficiency.

[0022] Furthermore, the longitudinal beam positioning module is provided with longitudinally penetrating positioning holes on both sides of the positioning groove. The positioning mechanism includes a central positioning mechanism and side positioning mechanisms located on both sides of the central positioning mechanism. The positioning rod and the telescopic pressing device are both set on the central positioning mechanism. The side positioning mechanisms on both sides include telescopic positioning devices. The telescopic end of the telescopic positioning device is connected to a positioning pin that can automatically extend and retract longitudinally to be inserted into the corresponding positioning hole.

[0023] Furthermore, both sides of the side positioning mechanism include a support surface for supporting the longitudinal beam positioning module.

[0024] Furthermore, the positioning hole is an elongated hole extending laterally.

[0025] Furthermore, the longitudinal beam positioning module includes a base plate, which includes a base plate body, a central plate body detachably mounted on the base plate body, and side plates located on both sides of the central plate body in the lateral direction. The central plate body is provided with the positioning groove, and the side plates body is provided with the positioning hole.

[0026] Furthermore, an outwardly flared guide slope is provided at the lower end of the positioning groove.

[0027] Furthermore, the central positioning mechanism includes two central positioning plates arranged laterally at intervals, the positioning rod being located between the two central positioning plates, each central positioning plate including a central mounting groove with an upward opening and a transverse through-hole for the longitudinal beam positioning module to be assembled into, the outer shell of the telescopic pressing device being fixed on the two central positioning plates, the pressing part being a pressing pin fixed on the telescopic end of the telescopic pressing device, the pressing pin being located between the two central positioning plates and above the positioning rod.

[0028] Furthermore, the side positioning mechanism includes two side positioning plates arranged laterally at intervals. Each side positioning plate includes a side mounting groove with an upward opening and a transverse through-hole for the longitudinal beam positioning module to be assembled. The outer shell of the telescopic positioning device is fixed on the two side positioning plates, and the positioning pin is located between the two side positioning plates.

[0029] Furthermore, two longitudinal beam positioning modules are independently set and arranged at intervals along the longitudinal direction. Each longitudinal beam positioning module is equipped with a central positioning mechanism and a side positioning mechanism. A clamping mechanism for positioning and clamping the top crossbeam is set on the slide body between the two longitudinal beam positioning modules. Attached Figure Description

[0030] Figure 1 This is a top view of a vehicle roof frame in the prior art;

[0031] Figure 2 This is a top view of Embodiment 1 of the welding positioning fixture for the vehicle roof frame of this utility model;

[0032] Figure 3 This is a front view of Embodiment 1 of the vehicle roof frame welding positioning fixture of this utility model;

[0033] Figure 4 This is a perspective view of the slide table in Embodiment 1 of the vehicle roof frame welding positioning fixture of this utility model;

[0034] Figure 5 This is a side view of the slide table in Embodiment 1 of the vehicle roof frame welding positioning fixture of this utility model;

[0035] Figure 6 This is a diagram showing the usage state of the slide in Embodiment 1 of the vehicle roof frame welding positioning fixture of this utility model;

[0036] Figure 7 This is a side view of the longitudinal beam positioning module in Embodiment 1 of the vehicle roof frame welding positioning fixture of this utility model;

[0037] Figure 8 for Figure 4 Enlarged view of the central positioning mechanism;

[0038] Figure 9 This is a perspective view of the central positioning mechanism in Embodiment 1 of the vehicle roof frame welding positioning fixture of this utility model;

[0039] Figure 10 This is a cross-sectional view of the central positioning mechanism in Embodiment 1 of the vehicle roof frame welding positioning fixture of this utility model;

[0040] Figure 11 for Figure 4 Enlarged view of the mid-side positioning mechanism;

[0041] Figure 12 This is a perspective view of the side positioning mechanism in Embodiment 1 of the vehicle roof frame welding positioning fixture of this utility model;

[0042] Figure 13 This is a cross-sectional view of the side positioning mechanism in Embodiment 1 of the vehicle roof frame welding positioning fixture of this utility model.

[0043] In the diagram: 100, Top crossbeam; 200, Side longitudinal beam; 300, Small longitudinal beam; 400, Base; 401, Guide rail; 402, Rack beam; 500, Slide table; 1, Slide table body; 11, Slider; 12, Drive gear; 13, Drive motor; 2, Longitudinal beam positioning module; 21, Base plate; 211, Middle plate; 2111, Positioning groove; 212, Middle pressure plate; 213, Side plate; 2131, Positioning hole; 214, Side pressure plate; 22, Connecting plate; 23, Side longitudinal beam positioning plate; 231, Side longitudinal beam positioning groove; 232, Placement groove; 24, Limiting plate; 25, Small longitudinal beam positioning plate; 251, Small longitudinal beam positioning groove; 26, Fixing plate; 27. Magnetic block; 3. Mid-positioning mechanism of longitudinal beam positioning module; 31. Mid-positioning plate; 32. Mid-connecting block; 33. Positioning rod; 34. Telescopic clamping cylinder; 35. Mid-guide sleeve; 36. Clamping pin; 4. Side positioning mechanism of longitudinal beam positioning module; 41. Side positioning plate; 42. Side connecting block; 43. Support block; 44. Telescopic positioning cylinder; 45. Side guide sleeve; 46. Positioning pin; 5. Mid-clamping mechanism of top crossbeam; 6. Side clamping mechanism of top crossbeam; 7. Transverse positioning module of top crossbeam; 8. Reference positioning lifting device; 88. Mid-clamping device; 9. Transverse positioning and clamping mechanism; 91. Moving body; 92. End clamping device. Detailed Implementation

[0044] To address the technical problems existing in the prior art, the basic concept of this utility model is to use the longitudinally retractable pressing part of the telescopic pressing device to press and fix the longitudinal beam positioning module on the positioning mechanism after positioning the longitudinal beam positioning module. This achieves the fixation of the longitudinal beam positioning module. When disassembling, the pressing part of the telescopic pressing device is controlled to release the pressing effect, eliminating the need for manual disassembly and assembly of nuts, thus improving work efficiency.

[0045] The features and performance of this utility model will be further described in detail below with reference to the embodiments.

[0046] Example 1 of the vehicle roof frame welding positioning fixture of this utility model:

[0047] like Figure 2 and Figure 3 As shown, the vehicle roof frame welding positioning fixture includes a base 400, on which a rack beam 402 extending longitudinally and two guide rails 401 are provided. The rack beam 402 is located between the two guide rails 401, and a rack is provided on the rack beam 402. Several slides 500 are guided and installed on the two guide rails 401. The number of slides 500 is fixed. When the number of top crossbeams is small, the front few slides of the positioning fixture can be left unused.

[0048] The structure of the slide 500 is as follows Figure 4 , Figure 5 and Figure 6 As shown, the slide body 1 includes a longitudinal beam positioning module 2, a central positioning mechanism 3 for the longitudinal beam positioning module, a side positioning mechanism 4 for the longitudinal beam positioning module, a central clamping mechanism 5 for the top crossbeam, a side clamping mechanism 6 for the top crossbeam, a transverse positioning module 7 for the top crossbeam, a reference positioning lifting device 8, a transverse positioning and pressing mechanism 9, and an ejection mechanism 10.

[0049] The slide body 1 has two sets of sliders 11 at its bottom, which are guided and engaged with two guide rails 401 on the base 400. A drive motor 13, a servo motor connected to a reducer, is located in the middle of the slide body 1. A drive gear 12 is mounted on the output end of the reducer. The drive gear 12 is located below the slide body 1 and meshes with a rack beam 402 on the base 400. By controlling the forward and reverse rotation of the drive gear 12, the drive motor 13 can move the slide 500 longitudinally on the base 400, allowing for arbitrary adjustment of the position of the top crossbeam 100 to accommodate different pitch dimensions.

[0050] Two longitudinal beam positioning modules 2 are installed on a slide table 500. The two longitudinal beam positioning modules 2 are arranged at intervals along the longitudinal direction, combined with Figure 1 and Figure 6 As shown, the longitudinal beam positioning module 2 is used to position the two side longitudinal beams 200 and several small longitudinal beams 300 in the transverse direction. The base 400 has a universal side longitudinal beam end positioning mechanism at its end, which can realize the positioning of the side longitudinal beam ends in all states of the produced vehicle model.

[0051] like Figure 7As shown, each longitudinal beam positioning module 2 includes a base plate 21. The base plate 21 is made of lightweight metal material and is hollowed out to reduce weight, which can greatly improve switching efficiency and reduce switching labor intensity. A positioning groove 2111 with an opening facing downward and extending longitudinally is provided in the middle of the base plate 21. A positioning hole 2131 extending longitudinally is also provided on both sides of the positioning groove 2111 on the base plate 21.

[0052] The slide body 1 is equipped with a longitudinal beam positioning module positioning mechanism, combined with Figures 4-6 As shown, the positioning mechanism of the longitudinal beam positioning module in this embodiment includes a central positioning mechanism 3 and side positioning mechanisms 4 located on both sides of the central positioning mechanism 3. The central positioning mechanism 3 cooperates with the positioning groove 2111 to position the substrate 21 laterally. The two side positioning mechanisms 4 cooperate with the positioning holes 2131 to position the substrate 21 vertically.

[0053] Specifically, such as Figure 8 , Figure 9 and Figure 10 As shown, the central positioning mechanism 3 of the longitudinal beam positioning module includes two detachably fixed central positioning plates 31 arranged laterally on the slide body 1. The two central positioning plates 31 have the same structure and are both Y-shaped. Each central positioning plate 31 includes two parallel central forked plates, forming a central mounting groove with an upward opening and a transverse through-hole for the substrate 21 to be inserted between the two central forked plates. The corresponding central forked plates of the two central positioning plates 31 are fixed together by central connecting blocks 32. Positioning rods 33 extending longitudinally are installed on the two central connecting blocks 32, that is, the positioning rods 33 are located between the two central positioning plates 31.

[0054] In addition, the mid-positioning mechanism 3 of the longitudinal beam positioning module also includes a telescopic pressing device. In this embodiment, the telescopic pressing device is a telescopic pressing cylinder 34. The outer shell of the telescopic pressing cylinder 34 is fixed on one side of the mid-fork plate of the two mid-positioning plates 31. A mid-guide sleeve 35 is fixed on the outer shell of the telescopic pressing cylinder 34. The mid-guide sleeve 35 is located between the corresponding mid-fork plates of the two mid-positioning plates 31. A pressing pin 36 is fixed at the piston rod end (i.e., the telescopic end) of the telescopic pressing cylinder 34. The mid-guide sleeve 35 and the pressing pin 36 are guided and cooperated. The pressing pin 36 is located between the two mid-positioning plates 31 and above the positioning rod 33. The pressing pin 36 can automatically extend and retract longitudinally to form a pressing part for pressing and fixing the longitudinal beam positioning module 2 on the positioning mechanism.

[0055] Combination Figure 11 , Figure 12 and Figure 13As shown, the side positioning mechanisms 4 of the longitudinal beam positioning modules on both sides each include two detachable side positioning plates 41 fixed to the slide body 1 and arranged laterally at intervals. The lower ends of the two side positioning plates 41 are fixed by side connecting blocks 42. The two side positioning plates 41 have the same structure and are both Y-shaped. Each side positioning plate 41 includes two parallel side forked plates, and a side mounting groove with an upward opening and transverse penetration is formed between the two side forked plates for the substrate 21 to be inserted. A support block 43 is installed on one of the side positioning plates 41. The support block 43 is located between the two side positioning plates 41, and the top surface of the support block 43 forms a support surface for supporting the longitudinal beam positioning module 2.

[0056] In addition, the side positioning mechanisms 4 of the longitudinal beam positioning modules on both sides also include telescopic positioning devices. In this embodiment, the telescopic positioning device is a telescopic positioning cylinder 44. The outer shell of the telescopic positioning cylinder 44 is fixed to the side fork plate on one side of the two side positioning plates 41. A side guide sleeve 45 is fixed on the outer shell of the telescopic positioning cylinder 44. The side guide sleeve 45 is located between the corresponding side fork plates of the two side positioning plates 41. A positioning pin 46 is fixed to the piston rod end (i.e., the telescopic end) of the telescopic positioning cylinder 44. The positioning pin 46 is located between the two side positioning plates 41 and can automatically extend and retract longitudinally. The side guide sleeve 45 and the positioning pin 46 are guided and engaged.

[0057] Two longitudinal beam positioning modules 2 are independently set on a slide table 500. Each longitudinal beam positioning module 2 is equipped with the aforementioned longitudinal beam positioning module central positioning mechanism 3 and longitudinal beam positioning module side positioning mechanism 4 to individually position and fix each longitudinal beam positioning module 2. Specifically, when installing the longitudinal beam positioning module 2, the base plate 21 enters from top to bottom into the central mounting groove of the longitudinal beam positioning module central positioning mechanism 3 and the side mounting grooves of the two longitudinal beam positioning module side positioning mechanisms 4. The support blocks 43 on the two longitudinal beam positioning module side positioning mechanisms 4 support the base plate 21, while the positioning groove 2111 on the base plate 21 engages the positioning rod 33 of the longitudinal beam positioning module central positioning mechanism 3, thereby achieving lateral positioning of the base plate 21. Then, the telescopic positioning cylinder 44 controls the positioning pin 46 to extend and insert into the positioning hole 2131 on the substrate 21, thereby positioning the substrate 21 in the vertical direction. At the same time, the telescopic pressing cylinder 34 controls the pressing pin 36 to extend and press against the side of the substrate 21 in the longitudinal direction, thereby pressing the substrate 21 against the central positioning mechanism and the two side positioning mechanisms, thereby fixing the longitudinal beam positioning module 2.

[0058] Therefore, the positioning mechanism of the longitudinal beam positioning module in this utility model integrates pin positioning and clamping, enabling one-click positioning and clamping of the longitudinal beam positioning module 2, making installation quick and efficient. When it is necessary to replace the longitudinal beam positioning module 2, simply control the clamping pin 36 and the positioning pin 46 to retract, achieving one-click release, after which the longitudinal beam positioning module 2 can be removed. Whether installing or disassembling, no manual removal of nuts is required, making the operation highly efficient.

[0059] Furthermore, to facilitate the smooth insertion of the positioning rod 33 into the positioning groove 2111 during the installation of the longitudinal beam positioning module 2, such as... Figure 7 As shown, an outwardly expanding guide slope is provided at the lower end of the positioning groove 2111.

[0060] Furthermore, since the positioning rod 33 and the positioning groove 2111 must be in clearance fit, this causes a certain allowable error in the lateral position of the longitudinal beam positioning module 2. In order to ensure that the positioning pin 46 can be inserted into the positioning hole 2131 and realize the positioning of the substrate 21 in the vertical direction, in this embodiment, the positioning hole 2131 is set as an elongated hole extending in the lateral direction.

[0061] Furthermore, to facilitate the manufacturing of the positioning groove 2111 and to facilitate the replacement of the positioning groove 2111 and positioning hole 2131 after wear or deformation, such as Figure 7 , Figure 8 and Figure 11 As shown, the substrate 21 in this embodiment includes a substrate body, a central plate 211 detachably mounted on the substrate body, and side plates 213 located on both sides of the central plate 211. A positioning groove 2111 is provided on the central plate 211, and a positioning hole 2131 is provided on the side plate 213.

[0062] Specifically, the thickness of the middle plate 211 is the same as that of the substrate body. Positioning circular plates are provided at both ends of the top horizontal direction of the middle plate 211. An embedding groove matching the upper shape of the middle plate 211 is provided on the substrate body, allowing for vertical positioning of the middle plate 211. A set of middle pressure plates 212 are fixed to both sides of the embedding groove on the substrate body. Each set includes two middle pressure plates 212, located on opposite sides of the longitudinal direction of the substrate body. The middle pressure plates 212 are fixed to the substrate body by passing bolts through them and connecting them with nuts. Simultaneously, each set of middle pressure plates 212 partially covers the middle plate 211, preventing it from detaching.

[0063] Meanwhile, the thickness of the side plate 213 is the same as that of the substrate body. The side plate 213 is waist-shaped, and the substrate body has waist-shaped insertion holes adapted to its shape for the side plate 213 to be inserted. Furthermore, a set of side pressure plates 214 are fixed to the substrate body on both sides of the waist-shaped insertion holes. Each set includes two side pressure plates 214, which are located on the longitudinal sides of the substrate body. The set of side pressure plates 214 is fixed to the substrate body by passing bolts through the set of side pressure plates 214 and the substrate body and connecting them with nuts. Additionally, each set of side pressure plates 214 partially covers the side plate 213, preventing it from coming off.

[0064] like Figure 7 As shown, two small longitudinal beam positioning plates 25 are detachably mounted on the upper part of the base plate 21 via bolts. Each small longitudinal beam positioning plate 25 is provided with a small longitudinal beam positioning groove 251 for positioning the small longitudinal beam 300 in the transverse direction. The number, position, and size of the small longitudinal beam positioning plates 25 and the number, position, and size of the small longitudinal beam positioning grooves 251 are determined according to the actual number, position, and size of the small longitudinal beams 300. At the same time, since the arching degree (i.e., chord height) of the top crossbeam 100 determines the height of the small longitudinal beam 300, different small longitudinal beam positioning plates 25 or the entire longitudinal beam positioning module 2 need to be replaced depending on the shape and size of the top crossbeam 100, in order to achieve the positioning of the top crossbeam 100 and the small longitudinal beams 300 with different vehicle widths, different chord heights, different specifications, different positions, and different angles.

[0065] Combination Figure 4 and Figure 7 As shown, a fixing plate 26 is fixed to one longitudinal side of the small longitudinal beam positioning groove 251 on the small longitudinal beam positioning plate 25. A magnetic block 27 is installed on the fixing plate 26, and the upper surface of the magnetic block 27 forms a magnetic attraction surface. The upper surfaces of the fixing plate 26 and the magnetic block 27 are flush with the bottom wall of the small longitudinal beam positioning groove 251. In this way, when the small longitudinal beam 300 is placed in the small longitudinal beam positioning groove 251, the magnetic block 27 can attract and fix the small longitudinal beam 300, realize the stable positioning of the small longitudinal beam 300, ensure the consistency of the material state, and prevent the small longitudinal beam 300 from moving during the transfer of the welding positioning fixture to the welding area and during the welding process of the top cover frame.

[0066] like Figure 7As shown, the two transverse ends of the substrate 21 are respectively connected to the side longitudinal beam positioning plates 23 via connecting plates 22. The connecting plates 22 and the side longitudinal beam positioning plates 23 are symmetrically arranged. The connecting plates 22 are bolted to the substrate 21 and the side longitudinal beam positioning plates 23, so the side longitudinal beam positioning plates 23 are detachable. The side longitudinal beam positioning plates 23 are provided with side longitudinal beam positioning grooves 231 for positioning the side longitudinal beam 200. In this embodiment, the side longitudinal beam positioning groove 231 includes two groove sidewalls arranged at an included angle, one of which is arranged vertically. The cross-section of the side longitudinal beam 200 is approximately quadrilateral. Figure 6 As shown, the side longitudinal beam positioning groove 231 can contact the lower and outer sides of the side longitudinal beam 200. Of course, in other embodiments, the cross-section of the side longitudinal beam 200 can also be other shapes, requiring that the two sidewalls of the side longitudinal beam positioning groove can contact the two sides of the side longitudinal beam 200. Therefore, the shape of the side longitudinal beam positioning groove is adapted to the two sides of the side longitudinal beam 200.

[0067] In this embodiment, the side longitudinal beam 200 is actually an irregularly shaped side longitudinal beam with integrated interior trim fasteners. To achieve better positioning of the side longitudinal beam 200, a rotatable limiting plate 24 is also installed on the side longitudinal beam positioning plate 23. The limiting plate 24 is eccentrically installed and normally rests under its own weight. Figure 4 , Figure 5 and Figure 7 The state shown is as follows. When placing the side longitudinal beam 200, the side longitudinal beam 200 presses against the limiting plate 24 to rotate it, eventually rotating to the position shown. Figure 6 As shown in the diagram, the side of the limiting plate 24 and the positioning groove 231 of the side longitudinal beam work together to position the side longitudinal beam 200.

[0068] In the roof frame of different vehicle models, some models only replace the side longitudinal beams, such as switching from a universal side longitudinal beam to a non-standard side longitudinal beam with integrated interior trim fasteners, or vice versa. In this embodiment, the positioning of both specifications of side longitudinal beams is integrated into a single longitudinal beam positioning module, eliminating the need to switch longitudinal beam positioning modules. When switching to a universal side longitudinal beam, the other side of the limiting plate 24 can be used to engage with the side longitudinal beam positioning groove 231, at which point the limiting plate 24 does not need to be rotated by a large angle. Furthermore, the limiting plate 24 is installed on the side longitudinal beam positioning plate 23 via studs and nuts (the nuts are not tightened, and the studs and limiting plate 24 are clearance-fitted to facilitate the rotation of the limiting plate 24). If the limiting plate 24 cannot be adapted to the size of the side longitudinal beam no matter how it is rotated, the limiting plate 24 can be removed and replaced with a limiting plate of the appropriate size. In addition, since the side longitudinal beam positioning plate 23 can also be removed, when there is a partial change in the same model, the positioning can be achieved by replacing the side longitudinal beam positioning plate 23. When there is a large change in the same model or when switching between different models, the positioning can be achieved by replacing the entire longitudinal beam positioning module 2.

[0069] After the 200mm edge longitudinal beam is positioned, as follows Figure 6 As shown, a top crossbeam 100 is placed on the two side longitudinal beams 200. A clamping mechanism for positioning and clamping the top crossbeam is provided on the slide body 1 between the two longitudinal beam positioning modules. The clamping mechanism includes a top crossbeam center clamping mechanism 5 and two top crossbeam side clamping mechanisms 6. The two top crossbeam side clamping mechanisms 6 are located on both sides of the top crossbeam center clamping mechanism 5 in the lateral direction, and are respectively located on the inner side of the positioning grooves 231 of the two side longitudinal beams, for clamping the two ends of the top crossbeam 100 in the lateral direction.

[0070] The top crossbeam side clamping mechanism 6 is slidably mounted on the slide body 1 in the transverse direction, and its transverse position can be changed. The slide body 1 is provided with a telescopic drive mechanism, such as a cylinder, connected to the top crossbeam side clamping mechanism 6 to control its transverse sliding. The top crossbeam side clamping mechanism 6 includes two side grippers arranged longitudinally at intervals. The two side grippers can clamp the end of the top crossbeam 100 by moving towards each other, and can release the top crossbeam 100 by moving away from each other.

[0071] The top crossbeam center clamping mechanism 5 includes two longitudinally spaced center grippers. The two grippers can clamp the center of the top crossbeam 100 by moving towards each other, and can release the top crossbeam 100 by moving away from each other. Unlike the side clamping mechanism 6 of the top crossbeam, the slide body 1 is equipped with a reference positioning lifting device 8. The top crossbeam center clamping mechanism 5 is mounted on the lifting output end of the reference positioning lifting device 8, allowing for changes in the vertical height of the top crossbeam center clamping mechanism 5.

[0072] In addition, a central clamping device 88 is installed on the lifting output end of the reference positioning lifting device 8. The central clamping device 88 is a rotary clamping device, the specific structure of which is existing technology and will not be described in detail here. Its main function is to press down on the center of the top crossbeam 100 by rotating, thereby fixing the top crossbeam 100. By setting the reference positioning lifting device 8 with variable height, it can adapt to vehicle models with different chord heights of the top crossbeam, and realize the positioning and clamping fixation of top crossbeams with different chord heights.

[0073] Furthermore, the reference positioning lifting device 8 is slidably mounted on the slide body 1 in the lateral direction. The slide body 1 is provided with a telescopic drive mechanism, such as a cylinder, connected to the reference positioning lifting device 8 to control its lateral sliding. By changing the lateral position of the reference positioning lifting device 8, it can avoid interference with the small longitudinal beam 300.

[0074] When using the welding positioning fixture, the vertical position of the clamping mechanism 5 in the middle of the top crossbeam 100 should be adjusted according to the degree of arching of the top crossbeam 100. Before placing the top crossbeam 100, the two central jaws of the clamping mechanism 5 in the middle of the top crossbeam and the two side jaws of the clamping mechanism 6 on the side of the top crossbeam should be in the open state (the opening distance of the jaws should be greater than the longitudinal width of the top crossbeam 100). In particular, the height of the two central jaws should be sufficient to preliminarily position the longitudinal placement of the top crossbeam 100. That is, after placement, the middle of the top crossbeam 100 should be located between the two central jaws. At the same time, when the clamping mechanism 5 in the middle of the top crossbeam is in a lower position, the two sides of the top crossbeam 100 should be located between the side jaws. In other words, the top crossbeam 100 can be preliminarily positioned longitudinally using three sets of jaws when it is placed. After adjusting the lateral position of the top crossbeam 100, the two central grippers of the middle clamping mechanism 5 of the top crossbeam can be controlled to clamp the longitudinal sides of the middle of the top crossbeam 100. At the same time, the two side grippers of the side clamping mechanism 6 of the top crossbeam can be controlled to clamp the longitudinal sides of both ends of the top crossbeam 100. During this process, the top crossbeam 100 may have a slight longitudinal movement, so as to achieve the final longitudinal position of the top crossbeam 100. The three clamping mechanisms can achieve the positioning and clamping of top crossbeams of different specifications.

[0075] like Figures 4-6 As shown, the slide body 1 is also provided with two top crossbeam lateral positioning modules 7 for positioning the top crossbeam 100 laterally after it is placed on the side longitudinal beams 200 at both ends. The top crossbeam lateral positioning module 7 includes a rotating shaft and a rotating block fixed on the rotating shaft. The side longitudinal beam positioning plate 23 is provided with a placement groove 232 on the lateral outer side of the side longitudinal beam positioning groove 231 for placing the rotating shaft and allowing the rotating shaft to rotate therein. Figure 7 As shown), the two ends of the rotating shaft are respectively placed in the placement grooves 232 of the side longitudinal beam positioning plates 23 of the two longitudinal beam positioning modules 2, and the rotation axis of the rotating shaft extends longitudinally.

[0076] A transverse positioning and clamping mechanism 9 is provided on the transverse positioning module 7 of the top crossbeam on the slide body 1. The transverse positioning and clamping mechanism 9 includes a movable body 91 that is slidably mounted on the slide body 1 in the transverse direction. The slide body 1 is provided with a telescopic drive mechanism, such as a cylinder, connected to the movable body 91 to control its transverse sliding.

[0077] When placing the top crossbeam 100 on the two side longitudinal beams 200, it is not necessary to precisely control the lateral position of the top crossbeam 100 during the placement process. As long as the two lateral ends of the top crossbeam 100 can be placed on the side longitudinal beams 200, and the middle part of the top crossbeam 100 is located between the two middle clamps, or the middle part and both sides of the top crossbeam 100 are located between a pair of clamps respectively. Then, by controlling the movement of the two moving bodies 91, they are brought closer to the corresponding rotating blocks and pushed to rotate. During this process, the rotating blocks gradually approach the positioning groove 231 of the side longitudinal beam, that is, gradually approach the side longitudinal beam 200. If the lateral end of the top crossbeam 100 protrudes outside the side longitudinal beam 200, the rotating blocks will push the top crossbeam 100 to move. Finally, the rotating blocks will fit against the outer edges of the side longitudinal beam 200 and the top crossbeam 100. Both rotating blocks are like this, so that the lateral ends of the top crossbeam 100 are aligned with the side longitudinal beam 200 respectively. The whole process is automatic and does not require manual intervention, which can greatly improve work efficiency and reduce manual labor intensity.

[0078] Therefore, with the cooperation of the longitudinal beam positioning module 2, the moving bodies 91 at both ends of the slide table move laterally towards the center of the slide table, and push the top crossbeam transverse positioning module 7 to press against the outer surface of the side longitudinal beam 200, which can realize the pressing of the side longitudinal beam of any specification, angle, and position; at the same time, the top crossbeam transverse positioning module 7 aligns the edge edges at both ends of the top crossbeam 100 with the outer surface of the side longitudinal beam 200, which can realize the centering and alignment of the top crossbeam in any state. In addition, a counterweight plate is fixed on the rotating shaft. When the moving body 91 moves away from the rotating block, the rotating block automatically rotates back to the initial position under the action of the counterweight plate, which facilitates the removal of the top cover frame after welding and the placement of the side longitudinal beam 200 and the top crossbeam 100 in the next cycle.

[0079] In addition, the lateral positioning and clamping mechanism 9 also includes an end clamping device 92 mounted on the movable body 91 for downward clamping of the top crossbeam 100. The end clamping device 92 is a rotary clamping device, and its specific structure is prior art and will not be described in detail here. The end clamping device 92 can prevent the top crossbeam 100 from moving upward, and at the same time achieves downward clamping of the side longitudinal beam 200, achieving a better positioning effect and facilitating subsequent welding operations.

[0080] After welding is completed, the ejector mechanism 10 lifts the top cover frame upwards to unload the material. Figures 4-6 As shown, there are two ejection mechanisms 10. The two ejection mechanisms 10 are located between the two longitudinal beam positioning modules 2 in the longitudinal direction, and are located between the middle clamping mechanism 5 of the top crossbeam and the side clamping mechanisms 6 of the top crossbeam on both sides in the transverse direction.

[0081] In addition, the welding positioning fixture of this utility model extensively uses solenoid valves, servo motors, photoelectric sensors, inductive switches, cylinder sensors, etc., which enables each mechanism of the positioning fixture to respond quickly and accurately, execute a series of actions with one key, and execute some actions sequentially with one key according to the set logic, while ensuring the reliable operation of each mechanism.

[0082] The usage process of the vehicle roof frame welding and positioning fixture of this utility model is as follows:

[0083] Step 1: According to the span dimensions of the top crossbeam on the top cover frame drawing, adjust the slide table 500 into position using the drive motor 13, reducer, and drive gear 12. The position of the slide table 500 can be pre-input into the workstation computer. When producing the corresponding vehicle model, select the parameters of that vehicle model to move the slide table into position with one click.

[0084] Step 2: Install the longitudinal beam positioning module 2 of the corresponding vehicle model into the positioning mechanisms on both sides of the slide table 500. Control the operation of the middle positioning mechanism 3 and the side positioning mechanism 4 of the longitudinal beam positioning module by the button to achieve one-click locking of the longitudinal beam positioning module 2.

[0085] Step 3: Place the top crossbeam transverse positioning module 7 in the placement slots 232 of the side longitudinal beam positioning plates 23 on both sides of the transverse longitudinal beam positioning module 2. The top crossbeam transverse positioning module 7 can rotate in the corresponding placement slots 232. The two ends of the rotating shaft can be fitted with retaining rings. Under the action of the retaining rings, the top crossbeam transverse positioning module 7 cannot move longitudinally.

[0086] Step 4: Based on the actual chord height of the top crossbeam 100, adjust the up and down position of the clamping mechanism 5 in the middle of the top crossbeam using the reference positioning lifting device 8, so that when the top crossbeam 100 is placed later, the middle part of the top crossbeam 100 can be located between the two middle clamps, or the middle and both sides of the top crossbeam 100 can be located between a pair of clamps respectively.

[0087] Step 5: Place the side longitudinal beams 200 into the side longitudinal beam positioning grooves 231 of the side longitudinal beam positioning plate 23. During placement, the side longitudinal beams 200 press against the rotating limiting plate 24. Finally, the side of the limiting plate 24 and the side longitudinal beam positioning groove 231 together position the side longitudinal beams 200. For some non-irregular side longitudinal beams, they can be placed directly into the side longitudinal beam positioning groove 231, using only the side longitudinal beam positioning groove 231 for positioning, without the need for the limiting plate 24, for example, when the side longitudinal beam positioning groove 231 is a V-shaped groove with the opening facing upwards. In addition, after the side longitudinal beams 200 are placed, the rear end of the side longitudinal beams 200 is tightly attached to the universal side longitudinal beam end positioning mechanism set at the rear end of the positioning fixture. For cases where the roof frame has no side longitudinal beams or no side longitudinal beams in certain areas, process beams can be used to replace the side longitudinal beams. The process beams are not welded to the frame. After the frame of the same model is welded, the process beams do not need to be removed and can continue to replace the side longitudinal beams of the next frame.

[0088] Step 6: Place the top crossbeam 100 so that its two ends rest on the side longitudinal beams 200, and that the middle part of the top crossbeam 100 is located between two middle clamps, or that the middle part and both sides of the top crossbeam 100 are located between a pair of clamps.

[0089] Step 7: Click the corresponding button on the touch screen or control box to control the two moving bodies 91 to move laterally towards the center. After the side of the moving body 91 contacts the rotating block, it pushes the rotating block to rotate towards the center of the slide, so that the rotating block gradually approaches the side longitudinal beam 200 until it presses the outer side of the side longitudinal beam 200. If the top cross beam 100 is misaligned laterally during this process, the two rotating blocks will push the top cross beam 100 towards the center until the rotating block contacts the outer side of the side longitudinal beam 200 and the outer edge of the top cross beam 100 at the same time. The outer edge of the top cross beam 100 is aligned with the outer side of the side longitudinal beam 200, completing the pressing of the outer side of the side longitudinal beam and the automatic centering of the top cross beam. Then the rotating block is kept in this position to achieve precise positioning of the lateral position of the top cross beam 100.

[0090] Step 8: Click the corresponding button on the touchscreen or control box to control the two top crossbeam side clamping mechanisms 6 to move laterally outward, that is, towards the corresponding moving body 91. The base of the moving body 91 extends through the space under the rotating shaft to the lateral inner side of the rotating shaft. When the top crossbeam side clamping mechanism 6 moves to a certain extent, it will stop with the base of the moving body 91, thus positioning the top crossbeam side clamping mechanism 6. At this time, the two top crossbeam side clamping mechanisms 6 are at the end of the top crossbeam. There are fewer small longitudinal beams here, avoiding interference between the top crossbeam side clamping mechanism 6 and the small longitudinal beams. At the same time, this position is close to the butt weld of the top crossbeam and the side longitudinal beam, which can ensure the consistency of the weld and improve the welding quality of the robot. Therefore, by positioning the top crossbeam side clamping mechanism 6 by the lateral positioning and clamping mechanism 9 on both sides, it is possible to ensure that the top crossbeam side clamping mechanisms 6 at both ends of the slide can clamp near the butt weld of the side longitudinal beam and the top crossbeam in any vehicle width state.

[0091] Step 9: Click the corresponding button on the touch screen or control box to control the side clamping mechanism 6 and the middle clamping mechanism 5 of the top crossbeam to clamp the longitudinal sides of the top crossbeam 100. At the same time, control the middle pressing device 88 and the end pressing device 92 to press the top crossbeam 100 downward, so that all the top crossbeam clamping mechanisms and pressing devices on the slide can press the sides and top surface of the top crossbeam synchronously, so as to achieve three-point positioning and three-point pressing of the top crossbeam.

[0092] Step 10: Place the small longitudinal beam 300 on the small longitudinal beam positioning plate 25 of the longitudinal beam positioning module 2 of the two adjacent slides, use the small longitudinal beam positioning groove 251 to position the lateral position of the small longitudinal beam 300, and use the magnetic block 27 to attach and fix the small longitudinal beam 300. At this time, for a single slide, the top crossbeam 100 is positioned in the middle of its longitudinal direction, and the small longitudinal beams 300 are positioned on both sides of the longitudinal direction of the top crossbeam 100.

[0093] Step 11: Move the welding positioning fixture to the welding area and let the robot automatically perform welding.

[0094] Step 12: After welding is completed, move the welding positioning fixture out of the welding area and click the one-click open button on the touch screen or control box. All clamping mechanisms and pressing devices will open simultaneously. Then, the moving bodies 91 at both ends of the slide table will move outward automatically, and the two sets of top crossbeam side clamping mechanisms 6 will move towards the center of the slide table. The top crossbeam transverse positioning module 7 will automatically reset under the action of the counterweight plate. The whole action can be completed in 2 seconds with one click.

[0095] Step 13: Click the eject button on the touch screen or control box. The eject mechanism 10 on the slide will simultaneously lift the welded top cover frame assembly, separating it from each positioning mechanism. Finally, use a crane to lift the frame to other workstations for subsequent processes.

[0096] During the manufacturing process, steps 5-13 above are repeated for the same vehicle model. When switching between different vehicle models, the positioning mechanism 3 in the middle of the longitudinal beam positioning module and the positioning mechanism 4 on the side of the longitudinal beam positioning module are first controlled to release the positioning of the longitudinal beam positioning module 2. Then, the longitudinal beam positioning module 2 is removed and replaced with a suitable longitudinal beam positioning module. The replacement of the longitudinal beam positioning module can be completed within 20 minutes. After repositioning, steps 1-13 above are repeated. Of course, depending on the specific situation, when adapting to different vehicle models, only the side longitudinal beam positioning plate 23 and / or the small longitudinal beam positioning plate 25 can be replaced, while the base plate 21 does not need to be replaced. This makes the operation more convenient, efficient, and reduces costs.

[0097] In summary, the slide table in this invention integrates the side longitudinal beam positioning plate and the small longitudinal beam positioning plate into a single longitudinal beam positioning module. The entire longitudinal beam positioning module can be replaced, and the side longitudinal beam positioning plates and small longitudinal beam positioning plates can also be replaced individually, achieving compatibility across all vehicle models using a single positioning fixture. When replacing the longitudinal beam positioning module, the central positioning mechanism and the side positioning mechanism of the module can be locked and unlocked with a single click, improving the switching efficiency between different vehicle models. Furthermore, the transverse positioning modules of the top crossbeams on both sides can precisely position the top crossbeams laterally, eliminating the need for extensive manual adjustments when placing them. As long as both ends of the top crossbeam can be placed on the side longitudinal beams, the entire adjustment process is automatic, requiring no manual intervention, significantly improving work efficiency and reducing labor intensity. In addition, the vertical position of the clamping mechanism in the middle of the top crossbeam is adjustable, which can adapt to the top crossbeam with different degrees of arching. At the same time, the pair of jaws of the clamping mechanism in the middle of the top crossbeam and the clamping mechanism on the side of the top crossbeam move synchronously towards or away from each other, which can accurately position the top crossbeam in the longitudinal direction.

[0098] This utility model achieves overall positioning of materials using a mechanism (the side longitudinal beam positioning plate positions the side longitudinal beam), then positioning the material using a mechanism (the side longitudinal beam positions the top cross beam transverse positioning module and the moving body), and then positioning the material again using a mechanism (the top cross beam transverse positioning module positions the two ends of the top cross beam so that they are aligned with the outer side of the side longitudinal beam; the top cross beam side clamping mechanism is positioned by the seat of the moving body; each clamping mechanism clamps the top cross beam; at the same time, the pressing device presses the top cross beam downwards, so that each mechanism is positioned by relying on the position of the side longitudinal beam before positioning the top cross beam; and when the width of the vehicle or the position, angle, or specifications of the side longitudinal beam changes, the position of the top cross beam transverse positioning and pressing mechanism at both ends of the slide and the side clamping mechanism at both ends of the top cross beam can be automatically adjusted with the side longitudinal beam). The mechanism and the material are mutually positioned, which simplifies the structure of each related mechanism and can adapt to various changes in the side longitudinal beam and the top cross beam, improving the flexibility and compatibility of the positioning fixture.

[0099] In other embodiments of the welding and positioning fixture for the vehicle roof frame: the two longitudinal beam positioning modules on a single slide can be fixedly connected by a longitudinal connecting rod, and the two longitudinal beam positioning modules are connected into a whole module. At this time, only one set of central positioning mechanism and side positioning mechanism needs to be configured on a single slide to position and fix one of the longitudinal beam positioning modules.

[0100] In other embodiments of the welding and positioning fixture for the vehicle roof frame: the telescopic positioning device can be replaced by a hydraulic cylinder or an electric push rod.

[0101] In other embodiments of the welding and positioning fixture for the vehicle roof frame: the telescopic clamping device can be replaced by a hydraulic cylinder or an electric push rod.

[0102] In other embodiments of the welding positioning fixture for the vehicle roof frame: the side positioning mechanism of the longitudinal beam positioning module may no longer include two side positioning plates arranged laterally, but instead include a U-shaped side positioning plate. In this case, the U-shaped groove of the side positioning plate faces upward and extends laterally. The U-shaped groove forms a side mounting groove for the longitudinal beam positioning module to be assembled. The outer shell of the telescopic positioning device is fixed on one of the side walls of the side positioning plate, and the side wall has a through hole for the positioning pin to pass through.

[0103] In other embodiments of the welding and positioning fixture for the vehicle roof frame: the central positioning mechanism of the longitudinal beam positioning module may no longer include two central positioning plates arranged laterally, but instead include a U-shaped central positioning plate. In this case, the U-shaped groove of the central positioning plate faces upward and extends laterally. The U-shaped groove forms a central mounting groove for the longitudinal beam positioning module to be assembled. The outer shell of the telescopic clamping device is fixed on one of the side walls of the central positioning plate, and the side wall has a through hole for the clamping pin to pass through.

[0104] In other embodiments of the welding positioning fixture for the vehicle roof frame: the outwardly expanding guide slope may not be provided at the lower end of the positioning groove, but only a normal rounded corner may be provided at the groove opening.

[0105] In other embodiments of the welding and positioning fixture for the vehicle roof frame: the base plate body may no longer be provided with an embedding groove and a waist-shaped embedding hole. The middle plate and the side plate are directly fixed to the base plate body by bolts. Of course, the part of the middle plate with the positioning groove needs to extend out of the outside of the base plate body, and the part of the side plate with the positioning hole needs to extend out of the outside of the base plate body. Alternatively, neither the middle plate nor the side plate extends out of the base plate body and completely overlaps with the base plate body. In this case, an avoidance hole needs to be opened on the base plate body to expose the positioning groove and the positioning hole.

[0106] In other embodiments of the welding and positioning fixture for the vehicle roof frame: the substrate may no longer include the substrate body and the middle plate and side plate separately fixed on the substrate body. The substrate is an integral plate, and the positioning groove and positioning hole are directly integrally machined on the plate.

[0107] In other embodiments of the welding and positioning fixture for the vehicle roof frame: the positioning hole can also be a round hole.

[0108] In other embodiments of the welding and positioning fixture for the vehicle roof frame: the support surface for supporting the longitudinal beam positioning module may not be provided on the side positioning mechanism of the longitudinal beam positioning module. In this case, the positioning rod can be used to support the longitudinal beam positioning module.

[0109] In other embodiments of the welding positioning fixture for the vehicle roof frame: there can be only two positioning mechanisms for the longitudinal beam positioning module, symmetrically arranged on both sides of the center of the longitudinal beam positioning module. This is equivalent to having no central positioning mechanism and only two side positioning mechanisms. In this case, each side positioning mechanism includes a positioning rod and a telescopic clamping device. The positioning rods on both sides can position the longitudinal beam positioning module and even support it. The telescopic clamping devices on both sides jointly clamp the longitudinal beam positioning module to fix it. In this case, there is no telescopic positioning device or positioning pin.

[0110] In other embodiments of the welding positioning fixture for the vehicle roof frame: there can be only one positioning mechanism for the longitudinal beam positioning module, located at the center of the longitudinal beam positioning module in the transverse direction. At this time, the positioning rod can have a certain transverse width to position and support the longitudinal beam positioning module. At this time, there is only one telescopic clamping device to clamp and fix the longitudinal beam positioning module, and there is still no telescopic positioning device and positioning pin.

[0111] In other embodiments of the welding and positioning fixture for the vehicle roof frame: regardless of how many positioning mechanisms the longitudinal beam positioning module has or how they are arranged, the longitudinal beam positioning module can be supported without relying on the positioning mechanism. Instead, the longitudinal beam positioning module can be supported by the slide body. That is, when the longitudinal beam positioning module is placed on the slide body, its two lateral ends can be supported on the slide body.

[0112] The embodiment of the slide of the vehicle roof frame welding positioning fixture in this utility model is as follows: The specific structure of the slide of the vehicle roof frame welding positioning fixture is the same as that of the slide in any embodiment of the vehicle roof frame welding positioning fixture described above, and will not be repeated here.

[0113] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. The patent protection scope of the present utility model shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present utility model shall also be included within the protection scope of the present utility model.

Claims

1. A slide table for welding and positioning a vehicle roof frame, comprising a slide table body and a longitudinal beam positioning module mounted on the slide table body, characterized in that, The longitudinal beam positioning module is provided with a positioning groove that faces downward and runs longitudinally through it. The slide body is provided with a positioning mechanism. The positioning mechanism includes a positioning rod that extends longitudinally and is used to engage in the positioning groove to position the lateral position of the longitudinal beam positioning module when it moves from top to bottom. The positioning mechanism also includes a telescopic pressing device, which includes a pressing part that can automatically extend and retract longitudinally to press and fix the longitudinal beam positioning module on the positioning mechanism.

2. The slide table of the vehicle roof frame welding positioning fixture according to claim 1, characterized in that, The longitudinal beam positioning module has longitudinally penetrating positioning holes on both sides of the positioning groove. The positioning mechanism includes a central positioning mechanism and side positioning mechanisms located on both sides of the central positioning mechanism. The positioning rod and the telescopic pressing device are both set on the central positioning mechanism. The side positioning mechanisms on both sides include telescopic positioning devices. The telescopic end of the telescopic positioning device is connected to a positioning pin that can automatically extend and retract longitudinally to be inserted into the corresponding positioning hole.

3. The slide table of the vehicle roof frame welding positioning fixture according to claim 2, characterized in that, Both sides of the side positioning mechanism include a support surface for supporting the longitudinal beam positioning module.

4. The slide table of the vehicle roof frame welding positioning fixture according to claim 2, characterized in that, The positioning hole is an elongated hole that extends laterally.

5. The slide table of the vehicle roof frame welding positioning fixture according to any one of claims 2 to 4, characterized in that, The longitudinal beam positioning module includes a base plate, which includes a base plate body, a central plate body that is detachably mounted on the base plate body, and side plates body located on both sides of the central plate body. The central plate body is provided with the positioning groove, and the side plates body is provided with the positioning hole.

6. The slide table of the vehicle roof frame welding positioning fixture according to any one of claims 1 to 4, characterized in that, An outwardly flared guide slope is provided at the lower end of the positioning groove.

7. The slide table of the vehicle roof frame welding positioning fixture according to any one of claims 2 to 4, characterized in that, The central positioning mechanism includes two central positioning plates arranged laterally at intervals. The positioning rod is located between the two central positioning plates. Each central positioning plate includes a central mounting groove with an upward opening and a transverse through-hole for the longitudinal beam positioning module to be assembled. The outer shell of the telescopic pressing device is fixed on the two central positioning plates. The pressing part is a pressing pin fixed on the telescopic end of the telescopic pressing device. The pressing pin is located between the two central positioning plates and above the positioning rod.

8. The slide table of the vehicle roof frame welding positioning fixture according to any one of claims 2 to 4, characterized in that, The side positioning mechanism includes two side positioning plates arranged laterally at intervals. Each side positioning plate includes a side mounting groove with an upward opening and a transverse through-hole for the longitudinal beam positioning module to be assembled. The outer shell of the telescopic positioning device is fixed on the two side positioning plates, and the positioning pin is located between the two side positioning plates.

9. The slide table of the vehicle roof frame welding positioning fixture according to any one of claims 2 to 4, characterized in that, Two longitudinal beam positioning modules are independently set and arranged at intervals along the longitudinal direction. Each longitudinal beam positioning module is equipped with a central positioning mechanism and a side positioning mechanism. A clamping mechanism for positioning and clamping the top crossbeam is set on the slide body between the two longitudinal beam positioning modules.

10. A welding and positioning fixture for a vehicle roof frame, comprising a base and at least one movable slide mounted on the base, characterized in that, The slide is the slide of the vehicle roof frame welding positioning fixture as described in any one of claims 1 to 9.

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