Four-head riveting machine for automobile seat framework

Abstract

The utility model discloses a four-head riveting machine for an automobile seat framework, and relates to the technical field of automobile part manufacturing equipment. The device comprises a machining table, the machining table is obliquely arranged, a mounting plate is arranged on the machining table, a machining unit is arranged on the mounting plate, the machining unit comprises a clamping mechanism, the clamping mechanism is correspondingly provided with a riveting mechanism, a sliding plate is further arranged between the machining table and the mounting plate, and the sliding plate is connected with the mounting plate. The air cylinder pulls the sliding plate to enable the workpiece to be smoothly separated from the clamping mechanism. The utility model has the beneficial effects that the inclined machining table design is adopted, so that the operation height of an operator better accords with ergonomics, and the fatigue of long-time operation is effectively relieved; the automatic demolding mechanism of the sliding plate is driven by the air cylinder, automatic separation of the workpiece and the clamping system after riveting is completed is achieved, manual knocking demolding is not needed, the risk of surface scratching caused by manual knocking demolding is also avoided, and the demolding efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts manufacturing equipment technology, and in particular to a four-head riveting machine for automotive seat frames. Background Technology

[0002] As a core component for vehicle safety and comfort, the manufacturing precision and structural stability of the car seat frame directly affect the overall performance of the seat. In traditional production processes, the riveting process is a key step to ensure the strength of the frame structure, especially with the increasing demand for multi-station synchronous riveting.

[0003] However, existing riveting equipment still has significant drawbacks in practical applications: First, traditional riveting machines mostly adopt a horizontal processing table layout, requiring operators to maintain a specific working posture for extended periods, which can easily lead to fatigue and makes workpiece loading and unloading inconvenient. Furthermore, the operator's observation and adjustment angles are limited, and the lack of tilt angle design makes it difficult to adapt to the processing needs of complex spatial structures like seat frames. Second, after riveting, the workpiece is prone to mechanical interference with the fixture, requiring manual intervention for demolding, which not only reduces efficiency but also poses a risk of scratches on the workpiece surface. In addition, existing riveting machines lack high-precision guiding and buffering designs, making them prone to rivet point misalignment due to uneven force during multi-station synchronous riveting. The instantaneous impact force is directly transmitted to the equipment body, causing accelerated wear of components. The lack of a fine-tuning mechanism for the riveting joint further restricts its adaptability to complex workpieces.

[0004] Based on this, the applicant proposed a four-head riveting machine for automotive seat frames to solve the above technical problems. Utility Model Content

[0005] This utility model addresses the shortcomings of existing technologies by providing a four-head riveting machine for automotive seat frames to solve the aforementioned technical problems.

[0006] This utility model is solved by the following technical solution:

[0007] A four-head riveting machine for automotive seat frames includes a processing table, which is inclined and has an mounting plate. A processing unit is mounted on the mounting plate, and the processing unit includes a clamping mechanism with a corresponding riveting mechanism. A sliding plate is also provided between the processing table and the mounting plate and is connected to the mounting plate. After processing, a cylinder pulls the sliding plate to smoothly disengage the workpiece from the clamping mechanism.

[0008] Preferably, the clamping mechanism includes a hydraulic cylinder A fixedly mounted to the mounting plate. The hydraulic cylinder A is connected to the outer half-clamp B via a connecting shaft. The mounting plate is also fixedly mounted with an outer half-clamp A corresponding to the outer half-clamp B. An inner half-clamp A is provided on the outer half-clamp A. An inner half-clamp B corresponding to the inner half-clamp A is provided on the outer half-clamp B. The inner half-clamp A and the inner half-clamp B cooperate to clamp the workpiece.

[0009] Preferably, the outer half-sleeve A is provided with a guide post, and the outer half-sleeve B is provided with a corresponding guide sleeve, with the guide post slidably disposed within the guide sleeve.

[0010] Preferably, the outer half-sleeve B is provided with a slot, and one end of the connecting shaft is engaged in the slot.

[0011] Preferably, the processing table is provided with a guide rail, and a slider is fixedly provided on the sliding plate, the slider being slidably connected to the guide rail.

[0012] Preferably, a buffer mechanism is also fixedly installed on the processing table, and a fixing block is connected to the mounting plate by adjusting screws. The fixing block is connected in cooperation with the buffer mechanism.

[0013] Preferably, the riveting mechanism includes a motor, and the output shaft of the motor is connected to a riveting head via a rotating shaft.

[0014] Preferably, the motor is fixedly mounted on a fixed base, and a hydraulic cylinder B is fixedly mounted on the mounting plate. The fixed base is movably connected to the hydraulic cylinder B via a fine-tuning nut.

[0015] Preferably, a displacement sensor is also fixedly installed on the hydraulic cylinder B.

[0016] The beneficial effects of this utility model are as follows:

[0017] 1. Ergonomic optimization and improved processing adaptability: The inclined processing table design makes the operator's working height more ergonomic, effectively reducing fatigue during long-term work; the inclined angle design breaks through the limitations of horizontal layout, significantly expanding the processing field of view, making it easier to observe and precisely adjust the complex spatial structure of the seat frame from multiple angles;

[0018] 2. Intelligent demolding and surface quality assurance: The automatic demolding mechanism, driven by a cylinder, automatically separates the workpiece from the clamping system after riveting, eliminating the need for manual demolding and avoiding the risk of surface scratches caused by manual demolding, thus improving demolding efficiency; in conjunction with the guide rail slider system, it ensures a smooth demolding process.

[0019] 3. Impact Suppression and Equipment Life Extension: The buffer mechanism absorbs the impact force during riveting and demolding, extending the life of related components; the displacement sensor and fine-tuning device form a closed-loop control to achieve dynamic compensation of the riveting joint stroke; the flexible connection between the slot and the connecting shaft further absorbs dynamic impact and reduces component wear.

[0020] 4. Enhanced clamping stability and precision: The nested clamping structure of the outer and inner half-clamps, combined with the high-precision guidance of the guide post and guide sleeve, ensures uniform distribution of clamping force during multi-station synchronous riveting and avoids rivet point deviation.

[0021] 5. Flexible processing and intelligent control: The riveting mechanism integrates fine-tuning nuts and displacement sensors, supporting online programming and real-time correction of riveting parameters, reducing the time required for changing and adjusting seat frames of different specifications; the four-station independent control system, combined with the tilting processing table layout, improves the synchronous riveting efficiency of complex workpieces. Attached Figure Description

[0022] 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.

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0024] Figure 2 This is a three-dimensional structural diagram of the main body of this utility model.

[0025] Figure 3 This is a three-dimensional structural diagram of the riveting mechanism of this utility model.

[0026] Figure 4 This is a three-dimensional structural diagram of the riveting mechanism of this utility model.

[0027] Figure 5 This is a three-dimensional structural diagram of the sliding plate and buffer mechanism of this utility model.

[0028] Figure 6 This is a three-dimensional structural diagram of the sliding plate and buffer mechanism of this utility model.

[0029] Figure 7 This is a three-dimensional structural diagram of the clamping mechanism of this utility model.

[0030] Figure 8 This is a three-dimensional structural diagram of the clamping mechanism of this utility model.

[0031] Figure 9 This is an exploded three-dimensional view of the clamping mechanism of this utility model.

[0032] In the diagram: 1. Machining table, 11. Mounting plate, 12. Guide rail, 13. Slider, 14. Adjusting screw, 15. Buffer mechanism, 2. Clamping mechanism, 21. Outer half-clamp A, 22. Inner half-clamp A, 23. Outer half-clamp B, 231. Slot, 24. Inner half-clamp B, 25. Hydraulic cylinder A, 251. Connecting shaft, 26. Guide sleeve, 27. Guide post, 3. Riveting mechanism, 31. Motor, 32. Fine-tuning nut, 33. Rotating shaft, 34. Rivet head, 35. Displacement sensor, 36. Fixed seat, 37. Hydraulic cylinder B, 4. Sliding plate, 5. Cylinder. Detailed Implementation

[0033] 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:

[0034] like Figures 1 to 9 As shown, the four-head riveting machine for automotive seat frames of this utility model includes a processing table 1. The processing table 1 is inclined, and the inclined processing table design makes the operator's working height more ergonomic, effectively alleviating fatigue during long-term operation. The inclined angle design breaks through the limitations of horizontal layout, significantly expanding the processing field of view, facilitating multi-angle observation and precise adjustment of complex spatial structure seat frames. The processing table 1 is provided with a mounting plate 11, and the mounting plate 11 is provided with a processing unit. The processing unit includes a clamping mechanism 2, and the clamping mechanism 2 is correspondingly provided with a riveting mechanism 3. A sliding plate 4 is also provided between the processing table 1 and the mounting plate 11. The sliding plate 4 is connected to the mounting plate 11. After processing, the cylinder 5 pulls the sliding plate 4 to smoothly disengage the workpiece from the clamping mechanism 2. The automatic demolding mechanism of the sliding plate driven by the cylinder realizes the automatic separation of the workpiece from the clamping system after riveting, eliminating the need for manual demolding and avoiding the risk of surface scratches caused by manual demolding, thus improving demolding efficiency.

[0035] The clamping mechanism 2 includes a hydraulic cylinder A25 fixedly mounted to the mounting plate 11. The hydraulic cylinder A25 is connected to an outer half-clamping sleeve B23 via a connecting shaft 251. The outer half-clamping sleeve B23 is provided with a slot 231, and one end of the connecting shaft 251 is engaged in the slot 231. The flexible connection between the slot and the connecting shaft further absorbs dynamic impacts and reduces component wear. An outer half-clamping sleeve A21 corresponding to the outer half-clamping sleeve B23 is also fixedly mounted on the mounting plate 11. An inner half-clamping sleeve A22 is provided on the outer half-clamping sleeve A21. The outer half-clamp B23 is provided with an inner half-clamp B24 corresponding to the inner half-clamp A22. The inner half-clamp A22 and the inner half-clamp B24 cooperate to clamp the workpiece. The outer half-clamp A21 is provided with a guide post 27, and the outer half-clamp B23 is provided with a corresponding guide sleeve 26. The guide post 27 is slidably disposed in the guide sleeve 26. Through the nested clamping structure of the outer half-clamp and the inner half-clamp, combined with the high-precision guidance of the guide post and the guide sleeve, the uniform distribution of clamping force is ensured during multi-station synchronous riveting, and the riveting point offset is avoided.

[0036] The processing table 1 is provided with a guide rail 12, and the sliding plate 4 is fixedly provided with a slider 13. The slider 13 is slidably connected to the guide rail 12. A buffer mechanism 15 is also fixedly installed on the processing table 1. A fixing block is connected to the mounting plate 11 through an adjusting screw 14. The fixing block is connected to the buffer mechanism 15. The buffer mechanism absorbs the impact force during riveting and demolding, and extends the life of each related component. The displacement sensor and the fine-tuning device form a closed-loop control to realize dynamic compensation of the riveting joint stroke.

[0037] The riveting mechanism 3 includes a motor 31, the output shaft of which is connected to a riveting head 34 via a rotating shaft 33. The motor 31 is fixedly mounted on a fixed base 36. A hydraulic cylinder B37 is fixedly mounted on the mounting plate 11. The fixed base 36 is movably connected to the hydraulic cylinder B37 via a fine-tuning nut 32. A displacement sensor 35 is also fixedly mounted on the hydraulic cylinder B37. The riveting mechanism integrates the fine-tuning nut and the displacement sensor, supporting online programming and real-time correction of riveting parameters, thus reducing the time required for replacing and adjusting seat frames of different specifications.

[0038] In use, the workpiece is placed on the clamping mechanism. Then, the hydraulic cylinder A operates, causing the outer half-clamp A and outer half-clamp B to close. At this time, the inner half-clamp A and inner half-clamp B clamp the workpiece. The processing stroke of the rivet head is adjusted according to the workpiece's processing technology. The motor and hydraulic cylinder B operate, causing the rivet head to rotate and move closer to the workpiece for riveting. The fine-tuning nut and displacement sensor work together to monitor the processing stroke of the rivet head and compensate for it. After riveting is completed, the riveting mechanism and the clamping mechanism reset. The cylinder pulls the sliding plate, which can generate a certain relative displacement between the workpiece and the clamping mechanism or produce an effect similar to manual knocking demolding, eliminating the force between the workpiece and the clamping mechanism, thus allowing the workpiece to smoothly separate from the clamping mechanism. The workpiece is then removed.

[0039] Because it enables automatic unloading, this device can be installed on automated production lines, equipped with robotic arms and other equipment, to achieve fully automated integrated production of feeding, processing, and unloading, meeting the needs of large-scale industrial automated production. At the same time, since no human intervention is required, it ensures consistency in product processing and improves production quality.

[0040] 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.

[0041] 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. A four-head riveting machine for automobile seat frames, including a processing table (1), characterized in that: The processing table (1) is inclined and a mounting plate (11) is provided on the processing table (1). A processing unit is provided on the mounting plate (11). The processing unit includes a clamping mechanism (2). A riveting mechanism (3) is provided correspondingly to the clamping mechanism (2). A sliding plate (4) is also provided between the processing table (1) and the mounting plate (11). The sliding plate (4) is connected to the mounting plate (11). After processing, the cylinder (5) pulls the sliding plate (4) to make the workpiece smoothly disengage from the clamping mechanism (2).

2. The four-head riveting machine for automobile seat frames according to claim 1, characterized in that: The clamping mechanism (2) includes a hydraulic cylinder A (25) fixedly installed on the mounting plate (11). The hydraulic cylinder A (25) is connected to the outer half-clamp B (23) via a connecting shaft (251). The mounting plate (11) is also fixedly installed with an outer half-clamp A (21) corresponding to the outer half-clamp B (23). An inner half-clamp A (22) is provided on the outer half-clamp A (21). An inner half-clamp B (24) corresponding to the inner half-clamp A (22) is provided on the outer half-clamp B (23). The inner half-clamp A (22) and the inner half-clamp B (24) clamp the workpiece after they cooperate.

3. The four-head riveting machine for automobile seat frames according to claim 2, characterized in that: The outer half-jacket A (21) is provided with a guide post (27), and the outer half-jacket B (23) is provided with a corresponding guide sleeve (26). The guide post (27) is slidably disposed in the guide sleeve (26).

4. The four-head riveting machine for automobile seat frames according to claim 2, characterized in that: The outer half-sleeve B (23) is provided with a slot (231), and one end of the connecting shaft (251) is engaged in the slot (231).

5. The four-head riveting machine for automobile seat frames according to claim 1, characterized in that: The processing table (1) is provided with a guide rail (12), and a slider (13) is fixedly provided on the sliding plate (4). The slider (13) is slidably connected to the guide rail (12).

6. The four-head riveting machine for automobile seat frames according to claim 1, characterized in that: A buffer mechanism (15) is also fixedly installed on the processing table (1). A fixing block is connected to the mounting plate (11) by adjusting screws (14). The fixing block is connected to the buffer mechanism (15).

7. The four-head riveting machine for automobile seat frames according to claim 1, characterized in that: The riveting mechanism (3) includes a motor (31), and the output shaft of the motor (31) is connected to a riveting head (34) via a rotating shaft (33).

8. The four-head riveting machine for automobile seat frames according to claim 7, characterized in that: The motor (31) is fixedly mounted on the fixed base (36), and the cylinder B (37) is fixedly mounted on the mounting plate (11). The fixed base (36) is movably connected to the cylinder B (37) through the fine-tuning nut (32).

9. The four-head riveting machine for automobile seat frames according to claim 8, characterized in that: A displacement sensor (35) is also fixedly installed on the hydraulic cylinder B (37).

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