Pressing and positioning tool
By integrating multiple clamping points and anti-loosening components into the clamping and positioning fixture, the problems of low capacity and poor consistency of traditional positioning and clamping devices are solved, and efficient, accurate and stable production of LB29 tailgate hinge welding is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QINGYUAN MINHUI AUTO PARTS
- Filing Date
- 2025-05-27
- Publication Date
- 2026-05-05
AI Technical Summary
Traditional positioning and clamping devices have low productivity and high maintenance costs during the welding process of the LB29 tailgate hinge. They also have poor welding consistency and accuracy, and inconsistent cylinder movements cause misalignment of the inner and outer panels, resulting in dimensional deviations.
The clamping and positioning fixture integrates multiple pre-adjusted clamping points on a single clamping component. A drive module drives the entire clamping module to operate, ensuring that the clamping points act synchronously on all parts of the product. Combined with anti-loosening components and an adjustable clamping head, it ensures uniform clamping force.
It improves welding efficiency and accuracy, reduces control difficulty, avoids warping problems caused by uneven clamping force, and enhances product consistency and production efficiency.
Smart Images
Figure CN224196222U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of automotive parts welding technology, and in particular to a clamping and positioning tooling. Background Technology
[0002] In the welding process of the LB29 tailgate hinge, traditional positioning and clamping uses one or two pressure heads with a reciprocating telescopic rotary cylinder for positioning and clamping. This results in the molded diaphragm being surrounded by cylinder positioning devices, and a single welding fixture can only accommodate one left and one right (or two) products. This leads to low production capacity, frequent cylinder maintenance, high repair costs, and limited improvement in production efficiency. Furthermore, using multi-point controlled cylinders can cause inconsistencies in positioning and clamping due to inconsistent cylinder movements, leading to misalignment of the inner and outer panels during welding, resulting in dimensional errors or defects after welding and poor consistency. Utility Model Content
[0003] This application aims to solve one of the aforementioned technical problems in the prior art. To this end, embodiments of this application provide a clamping and positioning fixture.
[0004] According to an embodiment of this application, a clamping and positioning fixture is provided, including a support platform;
[0005] At least one set of positioning components is disposed on the support platform;
[0006] A clamping module is rotatably mounted on the bearing platform, and the clamping module includes at least one set of clamping components;
[0007] A drive module is disposed on the support platform. The drive module is used to drive the clamping module to flip over to cover the positioning member, so that the clamping member can clamp the product positioned on the positioning member.
[0008] The aforementioned clamping and positioning fixture has at least the following beneficial effects: During use, the clamping points on the clamping components are pre-adjusted according to the desired clamping position of the product. One clamping component corresponds to one set of positioning components. When the product is positioned on the positioning component, the driving module drives the clamping module to rotate and close the positioning component, allowing the clamping component to clamp the product positioned on the positioning component. Compared to traditional positioning and clamping, this application integrates multiple pre-adjusted clamping points on one clamping component, and a single driving module drives the entire clamping module, enabling the clamping points to act synchronously on all parts of the product. This reduces control difficulty and improves welding efficiency and accuracy.
[0009] According to the clamping and positioning fixture described in the embodiments of this application, the clamping and positioning fixture further includes an anti-loosening component. One side of the clamping module is rotatably disposed on the bearing platform. When the clamping module flips over to cover the positioning component, the anti-loosening component presses against the other side of the clamping module.
[0010] According to the clamping and positioning fixture described in the embodiments of this application, the clamping module further includes a frame, the clamping component is disposed on the frame, the clamping component includes a plurality of clamping heads, and the distance between the clamping heads and the positioning component is adjustable.
[0011] According to the clamping and positioning fixture described in the embodiments of this application, both ends of the frame are provided with connecting shafts, the connecting shafts are rotatably mounted on the bearing platform, at least one end of the frame is provided with the drive module, and the connecting shafts are connected to the drive module.
[0012] According to the clamping and positioning fixture described in the embodiments of this application, the driving module includes a driving component and a transmission structure. The driving component is connected to the connecting shaft through the transmission structure, and the transmission structure can convert the rotational motion or linear motion of the driving component into the rotation of the connecting shaft.
[0013] According to the clamping and positioning fixture described in the embodiments of this application, the driving component is a first cylinder, and the transmission structure includes a gear and a rack. The gear is fixed to the connecting shaft, and the rack is fixed to the cylinder rod of the first cylinder, wherein the rack meshes with the gear.
[0014] According to the clamping and positioning fixture described in the embodiments of this application, the drive module further includes a brake assembly, which includes a second cylinder and a brake block. The brake block can move under the action of the second cylinder to press against the rack or the gear to restrict the movement of the rack or the gear.
[0015] According to the clamping and positioning fixture described in the embodiments of this application, the anti-loosening component includes a rotary clamping cylinder and a first limiting block. The cylinder rod of the rotary clamping cylinder is provided with a clamping block. When the clamping module flips to cover the positioning component, a portion of the frame abuts against the first limiting block. The rotary clamping cylinder drives the clamping block to rotate above the frame and drives the clamping block to press the frame toward the first limiting block.
[0016] According to the clamping and positioning fixture described in the embodiments of this application, the clamping component includes several first mounting parts and an adjusting column. The first mounting parts are fixed to the frame, the adjusting column is threadedly connected to the first mounting parts, and the clamping head is fixed to the end of the adjusting column.
[0017] According to the clamping and positioning fixture described in the embodiments of this application, the bearing platform is further provided with a second limiting block, which is used to limit the flipping angle of the clamping module.
[0018] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description
[0019] The present application will be further described below with reference to the accompanying drawings and embodiments;
[0020] Figure 1 This is a schematic diagram of the clamping and positioning fixture according to an embodiment of this application. Figure 1 ;
[0021] Figure 2 This is a schematic diagram of the clamping and positioning fixture in the embodiments of this application. Figure 2 ;
[0022] Figure 3 This is a schematic diagram of the clamping and positioning fixture in the embodiments of this application. Figure 3 ;
[0023] Figure 4 This is a schematic diagram of the clamping and positioning fixture in the embodiments of this application. Figure 4 ;
[0024] Figure 5 This is a schematic diagram of the clamping module in an embodiment of this application;
[0025] Figure 6 This is a schematic diagram of the structure of the clamping member in an embodiment of this application.
[0026] Reference numerals: bearing platform 110, second limiting block 120, first limiting block 130, positioning component 200, drive module 300, first cylinder 310, rack 320, gear 330, brake assembly 400, anti-loosening component 500, rotary clamping cylinder 510, clamping block 520, clamping module 600, frame 610, connecting shaft 620, connecting end 630, clamping component 700, L-shaped plate 710, first oblong hole 711, second oblong hole 712, connecting plate 720, adjusting column 730, clamping head 740. Detailed Implementation
[0027] This section will describe in detail the specific embodiments of this application. Preferred embodiments of this application are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of this application, but they should not be construed as limiting the scope of protection of this application.
[0028] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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 application.
[0029] In the description of this application, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.
[0030] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.
[0031] Reference Figures 1 to 4 The clamping and positioning fixture provided in this application includes a bearing platform 110, at least one set of positioning components 200, a clamping module 600, and a drive module 300.
[0032] The positioning component 200 is provided in at least one set. To improve production efficiency, the positioning component 200 can be provided in two or three sets or more as needed. The positioning component 200 is used for product positioning. In this embodiment, the positioning component 200 is used for positioning the LB29 tailgate hinge. The LB29 tailgate hinge is a flat product. The LB29 tailgate hinge is composed of an outer plate and an inner plate. During the welding process, surface A needs to be facing down, and welding is performed from the inside from top to bottom. The positioning requirements of the inner and outer plates of the product are high. There should be no relative movement during the welding process, and the positioning should not be pressed tightly. Otherwise, the molten adhesive will be stretched between the inner and outer plates, resulting in bulging defects on the outer plate, as well as problems such as surface difference defects and large gaps at both ends.
[0033] The positioning component 200 of this application can effectively and quickly position the tailgate hinge. Specifically, the positioning component 200 has a positioning surface, the shape of which is the same as the shape of the tailgate outer panel.
[0034] The clamping module 600 is rotatably mounted on the bearing platform 110. The clamping module 600 includes at least one set of clamping members 700, wherein the number of clamping members 700 is the same as the number of positioning members 200. When the clamping module 600 flips to cover the positioning members 200, the position of the clamping members 700 corresponds one-to-one with that of the positioning members 200.
[0035] The drive module 300 is disposed on the support platform 110. The drive module 300 is used to drive the clamping module 600 to flip over to cover the positioning member 200, so that the clamping member 700 can clamp the product positioned on the positioning member 200.
[0036] In use, the pressing point on the pressing component 700 is adjusted in advance according to the pressing position of the product to be pressed and positioned. One pressing component 700 corresponds to a set of positioning components 200. When the product is positioned on the positioning component 200, the pressing module 600 is driven by the driving module 300 to rotate and cover the positioning component 200, so that the pressing component 700 can press the product positioned on the positioning component 200.
[0037] Traditional positioning and clamping methods use one or two pressure heads with a single reciprocating telescopic rotary cylinder for positioning and clamping. This results in the bearing platform 110 being surrounded by cylinder positioning devices, meaning one bearing platform 110 can only be used for positioning and clamping one left and one right (or two) products. This leads to low production capacity, frequent cylinder maintenance, high repair costs, and limited improvement in production efficiency. Furthermore, using multi-point controlled cylinders can cause abnormal positioning and clamping due to inconsistent cylinder movements, leading to misalignment of inner and outer plates during welding, resulting in dimensional errors or defects after welding and poor consistency.
[0038] Compared to traditional positioning and clamping, this application integrates multiple pre-adjusted clamping points on a single clamping component 700, and drives the entire clamping module 600 to move through a drive module 300. This allows the clamping points of the same clamping component 700 to act synchronously on various parts of the product, reducing control difficulty and improving welding efficiency and accuracy.
[0039] In some embodiments, such as Figure 2 and Figure 3 As shown, the clamping and positioning fixture also includes an anti-loosening component 500. One side of the clamping module 600 is rotatably mounted on the support platform 110. When the clamping module 600 flips to cover the positioning component 200, the anti-loosening component 500 presses against the other side of the clamping module 600. This prevents insufficient clamping force from a single drive module 300, which could cause the free side of the clamping module 600 to tilt. The anti-loosening component 500 prevents insufficient clamping force during the welding process from causing the free side of the clamping module 600 to tilt, resulting in incomplete clamping.
[0040] In some embodiments, such as Figure 1 and Figure 5As shown, the clamping module 600 also includes a frame 610, and a clamping member 700 is disposed on the frame 610. The clamping member 700 includes multiple clamping heads 740, and the distance between the clamping heads 740 and the positioning member 200 is adjustable. By setting multiple clamping heads 740, the clamping requirements of different positions and points of the product can be met, and the adjustable distance between the clamping heads 740 and the positioning member 200 allows for adjustment of the pre-pressure according to products of different thicknesses.
[0041] In this embodiment, the clamping head 740 is made of rubber to avoid damaging the surface of the product.
[0042] In some embodiments, such as Figure 1 and Figure 5 As shown, both ends of the frame 610 are provided with connecting shafts 620, which are rotatably mounted on the support platform 110. At least one end of the frame 610 is provided with a drive module 300, and the connecting shafts 620 are connected to the drive module 300. The drive module 300 drives the connecting shafts 620 to rotate, thereby enabling the entire clamping module 600 to flip.
[0043] In some embodiments, drive modules 300 are provided at both ends of the frame 610, and the two drive modules 300 work simultaneously to make the flipping process of the flipping module smoother.
[0044] In some embodiments, such as Figures 2 to 4 As shown, the drive module 300 includes a drive component and a transmission structure. The drive component is connected to the connecting shaft 620 through the transmission structure. The transmission structure can convert the rotational or linear motion of the drive component into the rotation of the connecting shaft 620.
[0045] In some specific embodiments, the driving component is a first cylinder 310, and the transmission structure includes a gear 330 and a rack 320. The gear 330 is fixed to the connecting shaft 620, and the rack 320 is fixed to the cylinder rod of the first cylinder 310, wherein the rack 320 meshes with the gear 330. The cylinder drives the rack 320 to perform linear reciprocating motion, and the rack 320 drives the gear 330 to rotate, thereby enabling the frame 610 to rotate.
[0046] In some other embodiments, the driving element may also be a motor, and the transmission structure may include two gears 330, one gear 330 fixed to the connecting shaft 620, and the other gear 330 fixed to the output shaft of the motor, with the two gears 330 meshing.
[0047] In some embodiments, the drive module 300 further includes a brake assembly 400, which includes a second cylinder and a brake block. The brake block, under the action of the second cylinder, can move to press against the rack 320 or gear 330 to limit the movement of the rack 320 or gear 330. This prevents the frame 610 in the open state from automatically flipping and falling back due to insufficient air pressure in the cylinder.
[0048] In some embodiments, the anti-loosening component 500 includes a rotary clamping cylinder 510 and a first limiting block 130. A clamping block 520 is provided on the cylinder rod of the rotary clamping cylinder 510. When the clamping module 600 flips to cover the positioning component 200, part of the frame 610 abuts against the first limiting block 130. The rotary clamping cylinder 510 drives the clamping block 520 to rotate above the frame 610 and drives the clamping block 520 to press the frame 610 toward the first limiting block 130.
[0049] In this embodiment, the end of the frame 610 is provided with a connecting end 630. When the clamping module 600 flips to cover the positioning member 200, the connecting end 630 presses against the first limiting block 130. By rotating the clamping cylinder 510, the clamping block 520 is driven to press the connecting end 630 toward the first limiting block 130, so as to avoid the clamping module 600 from becoming loose under the positioning clamping condition.
[0050] In some embodiments, the clamping component 700 includes several first mounting components and adjusting columns 730. The number of first mounting components and adjusting columns 730 is the same as the number of clamping heads 740. The first mounting components are fixed to the frame 610, the adjusting columns 730 are threadedly connected to the first mounting components, and the clamping heads 740 are fixed to the ends of the adjusting columns 730, facilitating the adjustment of the pre-pressure of the clamping heads 740. The adjusting columns 730 are threadedly connected to the first mounting components. When the clamping module 600 flips to cover the positioning component 200, the distance between the clamping heads 740 and the positioning component 200 can be adjusted by rotating the adjusting columns 730 when the clamping pressure needs to be adjusted. With the distance between the frame 610 and the positioning component 200 remaining constant, the pre-pressure exerted by the clamping heads 740 on the product will relatively increase.
[0051] In some specific embodiments, such as Figure 6 As shown, the first mounting component includes an L-shaped plate 710, a connecting plate 720, a first screw, and a second screw. The two side plates of the L-shaped plate 710 are respectively provided with a first oblong hole 711 and a second oblong hole 712. The first screw passes through the first oblong hole 711 to fix one of the side plates to the frame 610, and the second screw passes through the second oblong hole 712 to fix the other side plate to the connecting plate 720. The adjusting column 730 is threadedly connected to the connecting plate 720.
[0052] The first oblong hole 711 is parallel to the setting direction of the adjusting column 730, and the second oblong hole 712 is perpendicular to the setting direction of the adjusting column 730. The oblong holes enable the adjusting column 730 to be adjusted in the horizontal direction so that the pressing point of different product models can be adjusted.
[0053] In some embodiments, such as Figures 2 to 4 As shown, the support platform 110 is also provided with a second limiting block 120, which is used to limit the rotation angle of the clamping module 600. On the one hand, the setting of the second limiting block 120 can prevent the clamping module 600 from over-rotating due to insufficient air pressure in the cylinder, and on the other hand, it can play a positioning and limiting role.
[0054] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.
Claims
1. A clamping and positioning fixture, characterized in that: include Platform; At least one set of positioning components is disposed on the support platform; A clamping module is rotatably mounted on the bearing platform, and the clamping module includes at least one set of clamping components; A drive module is disposed on the support platform. The drive module is used to drive the clamping module to flip over to cover the positioning member, so that the clamping member can clamp the product positioned on the positioning member.
2. The clamping and positioning fixture according to claim 1, characterized in that: The clamping and positioning fixture also includes an anti-loosening component. One side of the clamping module is rotatably mounted on the bearing platform. When the clamping module flips over to cover the positioning component, the anti-loosening component presses against the other side of the clamping module.
3. The clamping and positioning fixture according to claim 2, characterized in that: The clamping module further includes a frame, and the clamping component is disposed on the frame. The clamping component includes a plurality of clamping heads, and the distance between the clamping heads and the positioning component is adjustable.
4. The clamping and positioning fixture according to claim 3, characterized in that: Both ends of the frame are provided with connecting shafts, which are rotatably mounted on the support platform. At least one end of the frame is provided with the drive module, and the connecting shaft is connected to the drive module.
5. The clamping and positioning fixture according to claim 4, characterized in that: The drive module includes a drive component and a transmission structure. The drive component is connected to the connecting shaft via the transmission structure, and the transmission structure can convert the rotational or linear motion of the drive component into the rotation of the connecting shaft.
6. The clamping and positioning fixture according to claim 5, characterized in that: The driving component is a first cylinder, and the transmission structure includes a gear and a rack. The gear is fixed to the connecting shaft, and the rack is fixed to the cylinder rod of the first cylinder, wherein the rack meshes with the gear.
7. The clamping and positioning fixture according to claim 6, characterized in that: The drive module further includes a brake assembly, which includes a second cylinder and a brake block. The brake block can move under the action of the second cylinder to press against the rack or the gear to limit the movement of the rack or the gear.
8. The clamping and positioning fixture according to claim 3, characterized in that: The anti-loosening component includes a rotary clamping cylinder and a first limiting block. The cylinder rod of the rotary clamping cylinder is provided with a clamping block. When the clamping module flips to cover the positioning component, part of the frame abuts against the first limiting block. The rotary clamping cylinder drives the clamping block to rotate above the frame and drives the clamping block to press the frame toward the first limiting block.
9. The clamping and positioning fixture according to claim 3, characterized in that: The clamping component includes several first mounting parts and an adjusting column. The first mounting parts are fixed to the frame, the adjusting column is threaded to the first mounting parts, and the clamping head is fixed to the end of the adjusting column.
10. The clamping and positioning fixture according to claim 1, characterized in that: The carrying platform is also provided with a second limiting block, which is used to limit the flipping angle of the clamping module.