Universal riveting device for low-temperature radiator header assembly for vehicle

Abstract

The utility model discloses a general riveting device for a vehicle low-temperature radiator header component, which comprises a lower plate, a middle plate and an upper plate, an electric cylinder is arranged on the upper plate, and the electric cylinder is connected with the middle plate through a connecting block to form a driving assembly; the lower plate is provided with a lower die plate, an adjustable header positioning block and an adjustable positioning insert, and the positioning insert is provided with a positioning piece used for positioning the end of a header and a positioning blocking piece used for limiting lateral displacement; the sliding riveting assembly comprises an equal-height screw, a rectangular spring, a first inclined wedge sliding block and an inclined wedge riveting head, and the riveting head moves horizontally to complete riveting of the partition plate. A side plate and a second inclined wedge sliding block are arranged on the upper die plate, the second inclined wedge sliding block is matched with the inclined face of the first sliding block to form an inclined wedge structure, and the inclined wedge structure is used for converting vertical displacement of the electric cylinder into horizontal riveting action of the riveting head. The device has the advantages of being high in structural universality, high in automation degree and the like, and is suitable for quick and efficient riveting operation of header assemblies in cooling systems of various vehicle types.

Description

Technical Field

[0001] This utility model relates to the field of radiator manifold riveting technology, specifically a universal riveting device for automotive low-temperature radiator manifold assemblies. Background Technology

[0002] Low-temperature automotive radiators are widely used in modern automotive engine cooling systems and typically include components such as manifolds, baffles, nozzles, flat tubes, and fins. To meet different heat exchange performance requirements, baffles are usually installed in the radiator's manifold structure to change the flow path of the refrigerant and optimize cooling efficiency.

[0003] In existing technologies, the connection between manifolds and baffles is mainly accomplished through riveting. For example, patent document CN208853582U discloses a riveting device for radiators, which includes a fixing plate, guide posts, riveting block assemblies, and riveting cylinders, enabling vertical riveting of radiator components; however, this technical solution has a fixed structure, poor adaptability, and is only suitable for standardized mass production of specific models, lacking flexibility in model changeover.

[0004] For example, patent document number CN103743163A provides a manifold partition riveting fixture, which uses a fixed groove and end plate structure to position the manifold in a specific fixture for manual riveting; however, this solution mainly relies on manual operation, has a simple structure, cannot meet the requirements of automated and efficient production, and also cannot achieve compatible riveting of multiple products.

[0005] The existing technologies have the following drawbacks in practical use: 1. Lack of versatility: Most riveting equipment has a rigid structure and non-adjustable modules, making it difficult to adapt to different models of radiator manifold assemblies; 2. Low changeover efficiency: Traditional tooling requires disassembly and repositioning when changing models, resulting in long working hours and large errors; 3. Some structures still rely mainly on manual assistance, which cannot meet the requirements of mass production and consistency control.

[0006] Therefore, a universal riveting device for automotive low-temperature radiator manifold assemblies is proposed to address the above problems. Utility Model Content

[0007] The technical problem to be solved by this utility model is to overcome the existing defects and provide a universal riveting device for automotive low-temperature radiator manifold assemblies. This device solves the problem of frequent model changes in the riveting of low-temperature radiator manifold assemblies. The upper and lower modules of this device can be quickly changed in position and are suitable for manifold riveting of various products. Compared with traditional riveting devices, it saves investment in riveting devices, reduces model changeover time by half, and increases production efficiency by two times, which can effectively solve the problems in the background technology.

[0008] To achieve the above objectives, this utility model provides the following technical solution: A universal riveting device for automotive low-temperature radiator manifold assemblies, comprising a lower plate, a middle plate, and an upper plate. The middle plate and the upper plate are connected to the lower plate via linear bearings. An electric cylinder is mounted on the upper plate, with its extension end extending below the upper plate and connected to the middle plate via a connecting block. A lower template is mounted on the lower plate and is fixedly connected to the lower plate. Several manifold positioning blocks are mounted on the lower template, each with a positioning insert. A sliding riveting assembly is mounted on each manifold positioning block, comprising a level screw, a positioning insert, a rectangular spring, a wedge slider, and... The beveled wedge head and beveled wedge slider are set on both sides of the positioning insert. A rectangular spring is located between the beveled wedge slider and the positioning insert, and is fixed by a vertical screw. The impact during the riveting process will cause mechanical vibration. Due to its structural shape, the rectangular spring has a larger stroke linear range and load-bearing capacity, which can buffer the impact force and absorb the vibration to a certain extent, reducing the damage to the mechanism. The beveled wedge head is fixed on the beveled wedge slider. An upper template is set above the lower template, and a pre-compression component is set below the upper template. The component on the lower template is set as the lower module, and the component on the upper template is set as the upper module.

[0009] The lower template has a groove, allowing the manifold positioning block to slide steplessly within the groove, and then it is secured with screws.

[0010] Furthermore, the surface of the upper template is provided with a side plate, and a second inclined wedge slider is fixed on the side plate, which cooperates with the first inclined wedge slider.

[0011] The inclined wedge slider two is an active pushing component, driven by an electric cylinder to move downward along the vertical Z-axis;

[0012] The wedge slider is a passive force-bearing component, and its structure is connected to the rivet head, sliding along the horizontal X-axis;

[0013] The two surfaces come into contact with each other through inclined planes, forming a "wedge conversion structure".

[0014] The second inclined wedge slider in this utility model is located in the upper template assembly. Its bottom is provided with an inclined surface structure that cooperates with the first inclined wedge slider. When the electric cylinder drives the second slider to move vertically downward, its inclined surface pushes the first slider to slide horizontally, thereby driving the inclined wedge riveting head to complete the riveting action of the partition. This structure realizes the functional conversion between vertical drive and horizontal riveting, simplifies the motion transmission chain, and improves the stability and consistency of the mechanism.

[0015] Furthermore, the pre-compression assembly includes a second equalizing screw, a discharge block, a compression spring, and an upper pad. The compression spring is positioned between the discharge block and the upper pad. The second equalizing screw connects the discharge block, the compression spring, and the upper pad together. The discharge block pre-compresses the manifold and the partition, eliminating the gap between them.

[0016] Furthermore, a T-groove is formed between the side plates, and the upper pad can slide steplessly in the T-groove. By synchronously adjusting the positions of the upper and lower molds, the partition is riveted using a wedge structure, enabling the riveting of manifold assemblies for various products, reducing changeover time and increasing work efficiency.

[0017] Furthermore, the lower template and the upper template are respectively provided with a lower limit post and an upper limit post. The lower limit post and the upper limit post are corresponding vertically and are respectively set at one of the opposite corners of the lower template and the upper template. The lower limit post and the upper limit post play a limiting role to prevent excessive downward pressure. The other opposite corner of the lower template and the upper template are respectively provided with a guide post assembly. This guide post assembly is a conventional technology and will not be described in detail here.

[0018] Furthermore, the positioning insert is equipped with a positioning plate, which is used to position the end of the manifold. First, the flat tube hole of the manifold is inserted into the positioning plate, and then the partition is inserted into the partition groove of the manifold to complete the manual pre-installation.

[0019] The positioning piece is fixedly installed on the manifold positioning block. It has a slotted structure inside, and the slot matches the shape of the end of the manifold. During operation, the manifold is inserted into the slot inside the positioning piece to complete the initial positioning of the assembly. The positioning piece, together with the lower template and the positioning insert, constitutes the limiting reference of the manifold to ensure the consistency of position during the riveting process and improve the riveting quality and assembly efficiency.

[0020] The manifold positioning block is connected to the positioning insert, the positioning insert fixes the positioning baffle, and the positioning baffle is fixedly installed on both sides of the positioning insert, located near the positioning baffle, to achieve lateral limitation of the manifold during the riveting process and prevent it from shifting laterally under the riveting force.

[0021] A sign can also be installed on one side of the bottom panel.

[0022] After the development of this universal riveting device for automotive low-temperature radiator manifold assemblies, the problem of frequent model changes in the riveting of low-temperature radiator manifold assemblies has been solved. The upper and lower modules of this device can be quickly changed in position and are suitable for manifold riveting of various products. Compared with traditional riveting devices, it saves investment in riveting devices, reduces model changeover time by half, and increases production efficiency by two times.

[0023] Utility Model of Rivet Head: The end of the rivet head adopts a triangular structure, which can realize local spot marking on the partition plate, while ensuring that the outer end face of the manifold does not deform, as shown in the attached figure. Figure 6 and 7 As shown.

[0024] Working principle of the riveting device: First, insert the flat tube hole of the manifold into the positioning piece, and then insert the partition into the partition groove of the manifold to complete the manual pre-assembly; In the first step of riveting, the electric cylinder drives the pre-pressing component through the connecting block, and the unloading block pre-presses the partition to eliminate the gap between the manifold and the partition; In the second step of riveting, the sliding riveting component moves downward, the wedge slider acts on the wedge slider, and the wedge slider drives the wedge head to move horizontally to complete the riveting. Then the electric cylinder resets, and the wedge head resets under the action of the compression spring, and the manifold assembly is riveted.

[0025] Compared with the prior art, the beneficial effects of this utility model are:

[0026] 1. This device adopts a sliding wedge-type riveting structure, which can slide and position quickly without changing the overall mold structure to adapt to various product models; the changeover operation only requires adjusting the slider position and tightening, reducing the average changeover time by more than 50% and significantly improving the changeover speed of the production line.

[0027] 2. The inclined wedge slider and the inclined wedge rivet head work together to achieve horizontal riveting by converting the inclined plane force. The riveting point is precisely controlled and does not affect the shape of the manifold end face. The rectangular spring return design ensures that the riveting head action is consistent each time, improving the consistency and repeatability of riveting.

[0028] 3. The main body of the device adopts a modular structure design and is combined with an electric cylinder drive system, which can be quickly connected to existing production lines or automated equipment and is easy to integrate; all key actions such as pre-pressing, riveting, and resetting can be automatically realized, improving the automation level of the entire line and reducing manual intervention and operational errors. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the formal structure of this utility model;

[0030] Figure 2 This is an isometric drawing of the present invention;

[0031] Figure 3 This utility model Figure 1 A schematic diagram of the AA cross-sectional structure;

[0032] Figure 4 This is an isometric view of the upper and lower modules of this utility model;

[0033] Figure 5 This is an isometric drawing of the manifold installation of this utility model;

[0034] Figure 6 This is a schematic diagram of the rivet head structure of this utility model;

[0035] Figure 7 This is a top view of the rivet head structure of this utility model.

[0036] In the diagram: 1. Lower plate, 2. Linear shaft, 3. Lower template, 4. Lower limit post, 5. Upper limit post, 6. Manifold positioning block, 7. Wedge slider I, 8. Equal height screw I, 9. Rectangular spring, 10. Positioning insert, 11. Positioning baffle, 12. Wedge slider II, 13. Side plate, 14. Guide post assembly, 15. Upper template, 16. Middle plate, 17. Connecting block, 18. Upper plate, 19. Electric cylinder, 20. Positioning piece, 21. Wedge rivet head, 22. Unloading block, 23. Equal height screw II, 24. Compression spring, 25. Upper pad, 26. Identification plate. Detailed Implementation

[0037] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", 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 utility model 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 utility model.

[0038] Please see Figure 1-7 This utility model provides a technical solution: a universal riveting device for automotive low-temperature radiator manifold assembly, including a lower plate 1, a middle plate 16 and an upper plate 18. The middle plate 16 and the upper plate 18 are connected to the lower plate 1 by a linear bearing 2 to form an integrated motion platform structure.

[0039] An electric cylinder 19 is provided on the upper plate 18. The output shaft of the electric cylinder 19 passes through the upper plate 18 and is fixedly connected to the middle plate 16 through the connecting block 17. The electric cylinder 19 is used to drive the middle plate 16 to move up and down. An upper template 15 is provided below the middle plate as a support platform for the upper module.

[0040] The lower plate 1 is fixed with a lower template 3, which has multiple mounting slots for adjustable mounting of the manifold positioning block 6. The manifold positioning block 6 can slide and adjust in the horizontal direction in the slots of the lower template 3 and is locked in position by screws to adapt to different models of manifold assemblies.

[0041] The top of the manifold positioning block 6 is provided with a positioning insert 10, and a positioning piece 20 is installed in the positioning insert 10. The positioning piece 20 has a slot structure, and its slot shape matches the shape of the end of the manifold. The operator can insert the manifold into the positioning piece 20 to ensure accurate positioning of the manifold in the X-axis direction.

[0042] To prevent assembly from shaking, positioning baffles 11 are also fixed on both sides of the positioning insert 10, located on both sides of the positioning plate 20, to laterally limit the manifold and prevent it from shifting laterally during the riveting process.

[0043] The positioning insert 10 is equipped with a sliding riveting assembly, including an equal-height screw 8, a rectangular spring 9, a wedge slider 7, and a wedge head 21; the equal-height screw 8 passes through the slider and spring assembly from above and is fixed in the positioning insert 10; the rectangular spring 9 is located between the wedge slider 7 and the positioning insert 10, and plays the role of elastic return and impact buffer; the wedge head 21 is fixed on the wedge slider 7, and the whole constitutes a horizontal riveting mechanism.

[0044] The upper template 15 is provided with side plates 13, and a T-shaped groove is formed between the side plates 13. The upper pad 25 can slide steplessly in the T-shaped groove to adjust the position of the pre-compression area. A second inclined wedge slider 12 is fixed on the side plate 13. The lower surface of the second inclined wedge slider 12 is an inclined structure that can cooperate with the upper inclined surface of the first inclined wedge slider 7.

[0045] When the electric cylinder 19 starts the downward pressing action, the connecting block 17 drives the intermediate plate 16 and the upper template 15 to descend as a whole. First, the pre-pressing component below the upper template completes the pre-pressing of the manifold and the partition. The pre-pressing component includes equal height screw 23, unloading block 22, compression spring 24 and upper pad 25. The compression spring 24 is installed between the unloading block and the upper pad 25 to form an elastic pressing structure.

[0046] After pre-pressing is completed, the second inclined wedge slider 12 continues to descend, and its bottom inclined surface cooperates with the first inclined wedge slider 7, causing the latter to slide along the horizontal X-axis, driving the inclined wedge riveting head 21 to move forward and complete the riveting action; after the electric cylinder 19 is reset, the second inclined wedge slider 12 moves upward, and the rectangular spring 9 drives the first inclined wedge slider 7 and the inclined wedge riveting head 21 to automatically reset.

[0047] In addition, to prevent the die from overtravel and damage to the mechanism, a lower limit post 4 and an upper limit post 5 are respectively provided at the diagonal positions of the lower template 3 and the upper template 15, and a guide post assembly 14 is provided at the other diagonal to ensure the centering of the movement and the stability of the structure.

[0048] This device can also be equipped with an identification plate 26 on the lower plate 1 side to indicate the equipment number, status or product model, which facilitates management and maintenance.

[0049] The working principle of this utility model is as follows: The operator first inserts the manifold into the positioning piece 20 located on the manifold positioning block 6, achieving lateral limitation through the positioning baffle 11, and manually inserts the partition into the partition groove of the manifold to complete the pre-installation; subsequently, the electric cylinder 19 is activated, driving the connecting block 17, the intermediate plate 16, and the upper template 15 to move downwards as a whole. The pre-pressing assembly consists of a discharge block 22, a compression spring 24, and an upper pad 25, first vertically pressing the manifold and the partition to eliminate… After removing the assembly gap, the second inclined wedge slider 12 on the upper template 15 is pressed down, and its inclined surface contacts the first inclined wedge slider 7, pushing the first inclined wedge slider 7 to slide horizontally, driving the inclined wedge rivet head 21 fixed thereon to perform partition riveting; after the riveting is completed, the electric cylinder 19 rises in the opposite direction, the second inclined wedge slider 12 is reset, and at the same time the rectangular spring 9 releases its elastic force, pushing the first inclined wedge slider 7 and the inclined wedge rivet head 21 to automatically return to their positions, completing the entire riveting cycle, and the device can then enter the next round of operation.

[0050] The foregoing has shown and described the basic principles, main features and advantages of this utility model. Various changes and modifications may be made to this utility model without departing from the spirit and scope thereof, and all such changes and modifications fall within the scope of this utility model as claimed.

Claims

1. A universal riveting device for automotive low-temperature radiator manifold assembly, comprising a lower plate (1), a middle plate (16), and an upper plate (18), characterized in that: The intermediate plate (16) and the upper plate (18) are connected to the lower plate (1) by a linear bearing (2). An electric cylinder (19) is provided on the upper plate (18). The telescopic end of the electric cylinder (19) extends to the lower part of the upper plate (18) and is connected to the intermediate plate (16) by a connecting block (17). A lower template (3) is provided on the lower plate (1). Several manifold positioning blocks (6) are provided on the lower template (3). Positioning inserts (10) are provided on the manifold positioning blocks (6). Sliding riveting components are provided on the manifold positioning blocks (6). The assembly includes a leveling screw (8), a positioning insert (10), a rectangular spring (9), a wedge slider (7), and a wedge rivet head (21). The wedge slider (7) is located on both sides of the positioning insert (10). The rectangular spring (9) is located between the wedge slider (7) and the positioning insert (10) and is fixed by the leveling screw (8) in the vertical direction. The wedge rivet head (21) is fixed on the wedge slider (7). An upper template (15) is provided above the lower template (3), and a pre-pressing component is provided below the upper template (15).

2. The universal riveting device for automotive low-temperature radiator manifold assembly according to claim 1, characterized in that: The surface of the upper template (15) is provided with a side plate (13), and a second inclined wedge slider (12) is fixed on the side plate (13). The second inclined wedge slider (12) and the first inclined wedge slider (7) cooperate with each other.

3. The universal riveting device for automotive low-temperature radiator manifold assembly according to claim 2, characterized in that: The pre-compression assembly includes a second leveling screw (23), a discharge block (22), a compression spring (24), and an upper pad (25). The compression spring (24) is located between the discharge block (22) and the upper pad (25). The second leveling screw (23) connects the discharge block (22), the compression spring (24), and the upper pad (25) together.

4. A universal riveting device for automotive low-temperature radiator manifold assembly according to claim 2, characterized in that: A T-groove is formed between the side plates (13), and the upper pad (25) can slide steplessly in the T-groove.

5. A universal riveting device for automotive low-temperature radiator manifold assembly according to claim 1, characterized in that: The lower template (3) and the upper template (15) are respectively provided with a lower limit post (4) and an upper limit post (5). The lower limit post (4) and the upper limit post (5) are corresponding vertically and are respectively set at one of the opposite corners of the lower template (3) and the upper template (15). The other opposite corner of the lower template (3) and the upper template (15) are respectively provided with a guide post assembly (14).

6. A universal riveting device for automotive low-temperature radiator manifold assembly according to claim 1, characterized in that: The positioning insert (10) is provided with a positioning piece (20) which is used to position the end of the manifold.

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