Pipe expanding equipment for automobile seat framework

Abstract

The utility model discloses pipe expanding equipment for an automobile seat framework, and relates to the technical field of automobile part manufacturing equipment. The pipe expanding device comprises a profiling mechanism fixedly arranged on a machining table, a pipe expanding mechanism and an abutting mechanism are arranged on the two sides of the profiling mechanism respectively, the profiling mechanism comprises a lower profiling fixedly connected with the machining table, an upper profiling is connected to the lower profiling in a matched mode, and a forming cavity is formed after the upper profiling and the lower profiling are matched. The abutting mechanism comprises a sliding block driven by a driver A, a die B is arranged at the front end of the sliding block and connected with one end of a workpiece, the abutting mechanism further comprises an inserting block driven by a driver B, and the inserting block is connected with an inserting hole B in the sliding block in a matched mode. The pipe expanding mechanism comprises a die A driven by an oil cylinder, and the die A extrudes the other end of the workpiece. And ring ribs are formed on the workpiece in the forming cavity. The forming cavity is matched with the limiting cavity to ensure accurate positioning of the workpiece; and the insertion block locking mechanism realizes rigid locking after jacking, so that the risk that the sliding block retreats during pipe expansion is eliminated, and the forming consistency of the ring rib is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts manufacturing equipment technology, and in particular to automotive seat frame expansion tube equipment. Background Technology

[0002] As the core support structure of a car seat, the manufacturing precision of the car seat frame directly affects the safety and comfort of the seat. In the processing of the seat frame, the tube expansion process is a key forming step, especially the ring rib forming used to strengthen the structural strength. It is necessary to ensure that the workpiece maintains precise positioning and uniform stress during the high-pressure expansion process.

[0003] Traditional tube expansion equipment often uses an integral mold structure, which has the following technical drawbacks: First, the workpiece is prone to displacement during the tube expansion process due to insufficient clamping force or positioning deviation, resulting in uneven ring rib formation or dimensional deviations; Second, the fixed mold structure makes it difficult to adapt to the rapid changeover requirements of different specifications of workpieces, affecting processing efficiency; Third, the top-mounting mechanism lacks a rigid locking mechanism during processing, and is prone to backing up under high pressure, reducing process stability.

[0004] To address the aforementioned issues, although existing technologies have attempted to improve the situation through split molds or hydraulic locking structures, problems such as insufficient mold fitting precision and delayed locking response still exist, failing to meet the high-precision and high-reliability production requirements of automotive seat frames. Therefore, there is an urgent need to develop a new type of tube expansion equipment that can fundamentally solve the defects in existing technologies, such as positioning misalignment, unstable molding quality, and low changeover efficiency, by optimizing the mold parting structure and strengthening the locking capability of the top-mounted mechanism.

[0005] Based on this, the applicant proposed an automotive seat frame expansion tube device to solve the above technical problems. Utility Model Content

[0006] This utility model addresses the shortcomings of existing technologies by providing an expansion tube device for automotive seat frames to solve the aforementioned technical problems.

[0007] This utility model is solved by the following technical solution:

[0008] An automotive seat frame tube expansion device includes a template mechanism fixedly mounted on a processing table. Expansion mechanisms and a top-supporting mechanism are respectively provided on both sides of the template mechanism. The template mechanism includes a lower template fixedly connected to the processing table, and an upper template mating with the lower template. The upper template and the lower template mating together form a forming cavity. The top-supporting mechanism includes a sliding block driven by a driver A. A mold B is provided at the front end of the sliding block, and the mold B is connected to one end of the workpiece. The top-supporting mechanism also includes an insert block driven by the driver B, which mats with an insert hole B on the sliding block. The tube expansion mechanism includes a mold A driven by a hydraulic cylinder. The mold A presses the other end of the workpiece, causing the workpiece to form a ring rib within the forming cavity.

[0009] Preferably, the top-supporting mechanism further includes a fixed housing, and the sliding block is movably disposed within the fixed housing. The driver A controls the sliding block to move so that the mold B is submerged in the fixed housing for loading and unloading. After the driver A controls the sliding block to move so that the insertion hole B is aligned with the insertion hole A on the fixed housing, the driver B controls the insertion block to insert into the communicating insertion hole A and insertion hole B, thereby restricting the movement of the sliding block.

[0010] Preferably, the driver A is provided with a connecting rod, the sliding block is provided with a connecting groove, and the connecting rod is connected to the connecting groove.

[0011] Preferably, a mold core B is provided inside the mold B, and a gap is provided between the mold B and the mold core B, into which the workpiece is inserted.

[0012] Preferably, the upper mold includes an upper mold A and an upper mold B, the upper mold A being provided with an upper forming groove, and the lower mold includes a lower mold A and a lower mold B respectively adapted to the upper mold A and the upper mold B, the lower mold A being provided with a lower forming groove, the upper forming groove and the lower forming groove cooperating to form the forming cavity.

[0013] Preferably, an upper insert is embedded on the side of the upper mold A away from the upper mold B, and a lower insert is embedded on the side of the lower mold A away from the lower mold B, with the upper insert and the lower insert being connected in a cooperative manner.

[0014] Preferably, the upper mold A is further provided with an upper mating groove, and the lower mold A is further provided with a lower mating groove, and the upper mating groove and the lower mating groove cooperate to form a limiting cavity.

[0015] Preferably, a lower fixing block is fixedly provided on the processing table, and the lower template is fixedly installed on the lower fixing block. It also includes a hydraulic cylinder fixedly installed, and an upper fixing block is fixedly installed on the output shaft of the hydraulic cylinder, and the upper template is fixedly installed on the upper fixing block.

[0016] Preferably, a plurality of guide posts are provided between the upper fixing block and the lower fixing block.

[0017] Preferably, the tube expansion mechanism includes a hydraulic cylinder fixedly mounted on the processing table. The output shaft of the hydraulic cylinder is fixedly connected to a connecting plate via a connecting rod. The mold A is fixedly mounted on the connecting plate. A mold core A is provided inside the mold A. A gap is also provided between the mold A and the mold core A. During tube expansion processing, the workpiece is inserted into the gap.

[0018] Preferably, a guide rail is fixedly provided on the processing table, and a sliding table is slidably connected to the guide rail via a slider, and the connecting plate is fixedly installed on the sliding table.

[0019] The beneficial effects of this utility model are as follows:

[0020] 1. High-precision forming and stable positioning: The forming cavity and limiting cavity formed by the split upper and lower molds cooperate with each other. Combined with the bidirectional clamping of mold B in the top-supporting mechanism and mold A in the tube expansion mechanism, the workpiece is accurately positioned during the tube expansion process, avoiding skewing or displacement. The insert locking mechanism achieves rigid locking after tightening, completely eliminating the risk of sliding block retraction during high-pressure tube expansion and ensuring the dimensional consistency of the ring rib forming.

[0021] 2. Quick changeover and high adaptability: The upper and lower molds adopt a split modular design, and with replaceable inserts, the forming cavity structure can be flexibly adjusted according to different workpiece specifications, shortening mold changeover time and improving equipment versatility; the gap between mold B and mold core B, and between mold A and mold core A can be adapted to workpieces of different pipe diameters, further expanding the processing range;

[0022] 3. High efficiency and low loss: The coordinated control of the hydraulic cylinder driving the upper mold and the oil cylinder driving the mold A ensures that the expansion pressure is evenly transmitted to the workpiece, improving the forming quality of the ring rib while reducing energy consumption.

[0023] 4. Safe operation and convenient maintenance: The sliding block of the top-mounted mechanism can be controlled by driver A to retract into the fixed housing, freeing up operating space and facilitating safe loading and unloading; after the locking state is released, the mold B automatically resets, reducing the risk of manual intervention; the split mold and insert structure facilitates partial replacement or repair, reducing equipment maintenance costs. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be discussed below. Obviously, the technical solutions described in conjunction with the accompanying drawings are only some embodiments of this utility model. For those skilled in the art, other embodiments and their accompanying drawings can be obtained from the embodiments shown in these drawings without creative effort.

[0025] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0026] Figure 2 This is a three-dimensional structural diagram of the main body of this utility model.

[0027] Figure 3 This is a three-dimensional structural diagram of the tube expansion mechanism of this utility model.

[0028] Figure 4 This is a three-dimensional structural diagram of the tube expansion mechanism of this utility model.

[0029] Figure 5 This is a three-dimensional structural diagram of the template mechanism of this utility model.

[0030] Figure 6 yes Figure 5 A magnified view of part A.

[0031] Figure 7 This is a three-dimensional structural diagram of the template mechanism of this utility model.

[0032] Figure 8 yes Figure 7 A magnified view of part B.

[0033] Figure 9 This is a three-dimensional structural diagram of the top support mechanism of this utility model.

[0034] Figure 10 This is a three-dimensional structural diagram of the top support mechanism of this utility model.

[0035] In the diagram: 1. Processing table, 11. Guide rail, 2. Expansion tube mechanism, 21. Hydraulic cylinder, 22. Connecting rod, 23. Mold A, 24. Sliding table, 25. Slider, 26. Connecting plate, 27. Mold core A, 3. Top support mechanism, 31. Fixed housing, 311. Insertion hole A, 32. Driver A, 321. Connecting rod, 33. Driver B, 331. Insert block, 34. Mold B, 35. Sliding block, 351. Connecting groove, 352. Insertion hole B, 36. Mold core B, 4. Mold support mechanism, 41. Lower fixed block, 42. Lower mold support B, 43. Lower mold support A, 431. Lower mating groove, 432. Lower forming groove, 44. Upper fixed block, 45. Upper mold support A, 451. Upper mating groove, 452. Upper forming groove, 46. Upper mold support B, 47. Lower insert, 48. Upper insert, 49. Hydraulic cylinder. Detailed Implementation

[0036] The technical solutions of various embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments described in this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Example 1:

[0037] like Figures 1 to 10 As shown, the automotive seat frame expansion tube device of this utility model includes a template mechanism 4 fixedly mounted on a processing table 1. An expansion tube mechanism 2 and a top support mechanism 3 are respectively arranged on both sides of the template mechanism 4. The template mechanism 4 includes a lower template fixedly connected to the processing table 1, and an upper template is fitted onto the lower template. The upper template and the lower template cooperate to form a forming cavity. The top support mechanism 3 includes a sliding block 35 driven by a driver A32. A mold B34 is provided at the front end of the sliding block 35, and the mold B34 is connected to one end of the workpiece. The top support mechanism 3 also includes an insertion block 331 driven by a driver B33. The insertion block 331 is fitted to an insertion hole B352 on the sliding block 35. The expansion tube mechanism 2 includes a mold A23 driven by a hydraulic cylinder 21. The mold A23 presses the other end of the workpiece, causing the workpiece to form a ring rib within the forming cavity.

[0038] The top-supporting mechanism 3 also includes a fixed housing 31. The sliding block 35 is movably disposed within the fixed housing 31. The driver A32 controls the sliding block 35 to move so that the mold B34 is inserted into the fixed housing 31 for loading and unloading. The driver A32 controls the sliding block 35 to move so that the insertion hole B352 is aligned with the insertion hole A311 on the fixed housing 31. Then, the driver B33 controls the insertion block 331 to insert into the communicating insertion hole A311 and insertion hole B352, thereby restricting the movement of the sliding block 35. This insertion block locking mechanism achieves rigid locking after tightening, completely eliminating the risk of sliding block retraction during high-pressure tube expansion and ensuring the dimensional consistency of the ring reinforcement.

[0039] The driver A32 is provided with a connecting rod 321, and the sliding block 35 is provided with a connecting groove 351. The connecting rod 321 is connected to the connecting groove 351.

[0040] The mold B34 is provided with a mold core B36, and there is a gap between the mold B34 and the mold core B36. The workpiece is inserted into the gap. By adjusting the mold B34 and the mold core B36, different gaps can be adjusted to adapt to workpieces with different pipe types, pipe diameters and wall thicknesses.

[0041] The upper mold includes upper mold A45 and upper mold B46. Upper mold A45 is provided with an upper forming groove 452. The lower mold includes lower mold A43 and lower mold B42, which are adapted to upper mold A45 and upper mold B46 respectively. Lower mold A43 is provided with a lower forming groove 432. The upper forming groove 452 and the lower forming groove 432 cooperate to form the forming cavity. The forming cavity is set inside the mold to ensure the consistency of the dimensions of each forming and the consistency of the forming position. This avoids possible forming position deviations and different forming dimensions during processing, or even forming distortion caused by uneven stress on the workpiece.

[0042] An upper insert 48 is embedded on the side of the upper mold A45 away from the upper mold B46, and a lower insert 47 is embedded on the side of the lower mold A43 away from the lower mold B42. The upper insert 48 and the lower insert 47 are connected in cooperation. The setting of the insert can ensure the fixation of the workpiece and avoid workpiece deformation at this position, which would affect the final molding quality.

[0043] The upper mold A45 is also provided with an upper mating groove 451, and the lower mold A43 is also provided with a lower mating groove 431. The upper mating groove 451 and the lower mating groove 431 cooperate to form a limiting cavity. This limiting cavity is for processing requirements that require multiple tube expansion molding and simultaneous connection of another component. The component to be connected can be fitted onto the pipe fitting that has been processed with one ring rib, and then the component can be placed in the limiting cavity. At this time, another ring rib is formed, and the component can be fixed on the pipe fitting to complete the connection.

[0044] The processing table 1 is fixedly provided with a lower fixing block 41, and the lower template is fixedly installed on the lower fixing block 41. It also includes a hydraulic cylinder 49 fixedly installed. An upper fixing block 44 is fixedly installed on the output shaft of the hydraulic cylinder 49, and the upper template is fixedly installed on the upper fixing block 44.

[0045] Several guide posts are also provided between the upper fixing block 44 and the lower fixing block 41, making the sliding smoother and the movement positioning more accurate.

[0046] The tube expansion mechanism 2 includes a hydraulic cylinder 21 fixedly mounted on the processing table 1. The output shaft of the hydraulic cylinder 21 is fixedly connected to the connecting plate 26 via a connecting rod 22. The mold A23 is fixedly mounted on the connecting plate 26. A mold core A27 is provided inside the mold A23. A gap is also provided between the mold A23 and the mold core A27. During tube expansion processing, the workpiece is inserted into the gap. The gap is adjusted according to the workpiece size to ensure a proper fit.

[0047] A guide rail 11 is fixedly installed on the processing table 1. A sliding table 24 is slidably connected to the guide rail 11 via a slider 25. A connecting plate 26 is fixedly installed on the sliding table 24.

[0048] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and not restrictive in all respects. The scope of this invention is defined by the appended claims, not by the foregoing description, and is therefore intended to encompass all variations falling within the meaning and scope of equivalents of the claims. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0049] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An expansion tube device for automotive seat frames, characterized in that: The application relates to a pipe expanding and forming device, which comprises a profiling mechanism (4) fixedly arranged on a machining table (1), pipe expanding mechanism (2) and abutting mechanism (3) arranged on the two sides of the profiling mechanism (4), the profiling mechanism (4) comprises a lower profiling block fixedly connected with the machining table (1), an upper profiling block is connected with the lower profiling block in a matched mode, the upper profiling block and the lower profiling block form a forming cavity after being matched, the abutting mechanism (3) comprises a sliding block (35) driven by a driver A (32), a die B (34) is arranged at the front end of the sliding block (35), the die B (34) is connected with one end of a workpiece, the abutting mechanism (3) further comprises an inserting block (331) driven by a driver B (33), the inserting block (331) is connected with an inserting hole B (352) on the sliding block (35) in a matched mode, the pipe expanding mechanism (2) comprises a die A (23) driven by an oil cylinder (21), the die A (23) extrudes the other end of the workpiece, so that the workpiece is formed with a ring rib in the forming cavity.

2. The automobile seat framework tube expanding apparatus according to claim 1, characterized by: The abutting mechanism (3) further comprises a fixed shell (31), the sliding block (35) is movably arranged in the fixed shell (31), the driver A (32) controls the movement of the sliding block (35) so that the die B (34) is submerged in the fixed shell (31), and then feeding and discharging are carried out, the driver A (32) controls the movement of the sliding block (35) so that the inserting hole B (352) is aligned with an inserting hole A (311) on the fixed shell (31), then the driver B (33) controls the inserting block (331) to be inserted into the communicating inserting hole A (311) and inserting hole B (352), so as to limit the movement of the sliding block (35).

3. The automobile seat framework tube expanding apparatus according to claim 1, characterized by: A connecting rod (321) is arranged on the driver A (32), and a connecting groove (351) is arranged on the sliding block (35), and the connecting rod (321) is connected with the connecting groove (351) in a matched mode.

4. The automobile seat framework tube expanding apparatus according to claim 1, characterized by: A die core B (36) is arranged in the die B (34), and a gap is arranged between the die B (34) and the die core B (36), and the workpiece is inserted into the gap.

5. The automobile seat framework tube expanding apparatus according to claim 1, characterized by: The upper profiling block comprises an upper profiling block A (45) and an upper profiling block B (46), an upper forming groove (452) is arranged on the upper profiling block A (45), the lower profiling block comprises a lower profiling block A (43) and a lower profiling block B (42) matched with the upper profiling block A (45) and the upper profiling block B (46) respectively, a lower forming groove (432) is arranged on the lower profiling block A (43), and the upper forming groove (452) and the lower forming groove (432) are matched to form the forming cavity.

6. The automobile seat framework tube expanding apparatus according to claim 5, characterized by: An upper inlay block (48) is embedded on the side, away from the upper profiling block B (46), of the upper profiling block A (45), a lower inlay block (47) is embedded on the side, away from the lower profiling block B (42), of the lower profiling block A (43), and the upper inlay block (48) is connected with the lower inlay block (47) in a matched mode.

7. The automobile seat framework tube expanding apparatus according to claim 5, characterized by: An upper matching groove (451) is further arranged on the upper die A (45), and a lower matching groove (431) is further arranged on the lower die A (43), and the upper matching groove (451) and the lower matching groove (431) form a limiting cavity after cooperation.

8. The automobile seat frame tube expanding apparatus according to claim 1, characterized by: The machining table (1) is fixedly provided with a lower fixed block (41), the lower die is fixedly installed on the lower fixed block (41), and a fixedly installed hydraulic cylinder (49) is further included, and an upper fixed block (44) is fixedly installed on an output shaft of the hydraulic cylinder (49), and the upper die is fixedly installed on the upper fixed block (44).

9. The automobile seat frame tube expanding apparatus according to claim 1, characterized by: The pipe expanding mechanism (2) comprises the oil cylinder (21) fixedly arranged on the machining table (1), the output shaft of the oil cylinder (21) is fixedly connected with the connecting plate (26) through the connecting rod (22), the die A (23) is fixedly installed on the connecting plate (26), the die A (23) is provided with the die core A (27), and a gap is further arranged between the die A (23) and the die core A (27), and when the pipe expanding is processed, the workpiece is inserted into the gap.

10. The automobile seat framework tube expanding apparatus according to claim 9, characterized by: The machining table (1) is fixedly provided with a guide rail (11), the guide rail (11) is slidably connected with a sliding table (24) through a sliding block (25), and the connecting plate (26) is fixedly installed on the sliding table (24).

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