A multi-point press forming apparatus for a rear large seat skeleton assembly

Abstract

This utility model discloses a multi-point stamping forming device for a rear seat frame assembly, relating to the field of stamping forming technology. It aims to solve the technical problems of insufficient real-time performance and precision in traditional lubrication methods. The device includes a guide rod and a cooperating guide sleeve. An oil reservoir is fixedly installed on the top of the guide sleeve, and the oil reservoir contains an oil discharge mechanism and a lubrication mechanism. This utility model cleverly utilizes the cooperation between the spiral groove on the outer side of the first piston and a limiting block fixed to the inner wall of the oil reservoir to convert the vertical movement of the guide rod into the rotational movement of the first piston. This design ensures that the lubrication path formed by the first and second oil discharge grooves only opens when the guide rod descends to a specific stroke, achieving control of lubrication once per stamping cycle. This avoids the problems of insufficient or excessive lubrication and solves the shortcomings of traditional lubrication methods in terms of real-time performance and precision.

Description

Technical Field

[0001] This utility model relates to the field of stamping forming technology, and more specifically, to a multi-point stamping forming equipment for a rear seat frame assembly. Background Technology

[0002] In the manufacturing of automotive rear seat frame assemblies, multi-point stamping forming equipment is the core equipment for achieving precise frame shaping. Its operational stability directly determines the processing accuracy and product quality of the rear seat frame. In this type of stamping equipment, the guide structure composed of guide rods and guide sleeves is a key component. The two need to maintain high-frequency relative sliding during the stamping process to ensure precise alignment of the upper and lower dies and avoid frame forming dimensional errors or equipment component wear caused by guide deviations.

[0003] To reduce the frictional resistance between the guide rod and the guide sleeve during relative sliding, extend the service life of components, and ensure continuous and stable operation of the equipment, continuous and effective lubrication of their mating surfaces is necessary. However, traditional lubrication methods have several drawbacks: Firstly, most equipment uses manual periodic oiling or continuous oil supply via a fixed oil circuit. Manual oiling makes it difficult to accurately control the timing and amount of oil injection, easily leading to untimely lubrication causing dry friction between components, or excessive oil injection causing lubricant waste and pollution of the surrounding environment. Continuous oil supply, on the other hand, cannot adjust the oil supply rhythm according to the equipment's operating status. Lubricating oil continues to be supplied even when the equipment is stationary or during the guide rod's return stroke, which not only increases lubrication costs but may also cause the guide structure's seal to fail due to prolonged lubricant accumulation. In view of this, we propose a multi-point stamping forming device for the rear seat frame assembly. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology, adapt to the needs of reality, and provide a multi-point stamping forming equipment for the rear seat frame assembly, so as to solve the technical problems of the current traditional lubrication method in terms of real-time performance and accuracy.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a multi-point stamping forming equipment for a rear seat frame assembly, including a guide rod and a guide sleeve that cooperates with it. An oil storage box is fixedly installed on the top of the guide sleeve. An oil discharge mechanism and a lubrication mechanism are provided inside the oil storage box. The oil discharge mechanism includes a first piston and a second piston. The first piston is rotatably installed on the outside of the guide rod, and the second piston is fixedly installed on the outside of the guide rod. The first piston has a first channel, and the second piston has a second channel. A spiral groove is opened on the outside of the first piston. The lubrication mechanism includes a receiving bucket. The receiving bucket is set with an inverted cone shape, and an arc-shaped groove is opened on the surface of the receiving bucket. The receiving bucket is used to receive the lubricating oil leaking when the first channel and the second channel are connected.

[0006] Preferably, the oil feeding mechanism further includes a limiting block, which is fixedly installed inside the oil storage box and cooperates with the spiral groove. An oil storage chamber is provided between the oil storage box and the first piston, and an oil storage chamber is provided between the oil storage box and the second piston.

[0007] Preferably, the lubrication mechanism further includes a porous metal oil-permeable bushing, which is fixedly installed inside the receiving hopper and sleeved on the outside of the guide rod. The porous metal oil-permeable bushing has micropores on its surface.

[0008] Preferably, the first channel is a first lower oil groove that penetrates the side wall of the first piston, and the second channel is a second lower oil groove that penetrates the side wall of the second piston.

[0009] Preferably, the outlet of the arc-shaped groove leads to a porous metal oil-permeable bushing.

[0010] Preferably, a sealing element is provided between the first piston, the second piston, and the guide rod, and a sealing element is also provided between the guide rod and the oil reservoir.

[0011] Preferably, the oil storage box has an oil inlet on its outer side, the oil inlet is equipped with an openable and closable cover, and the oil inlet is connected to the oil storage cavity.

[0012] Preferably, the guide rod is disposed at the bottom of the upper mold, and the guide sleeve is disposed at the top of the lower mold.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model cleverly utilizes the helical groove on the outer side of the first piston and the limiting block fixed to the inner wall of the oil reservoir to convert the vertical movement of the guide rod into the rotational movement of the first piston. This design ensures that the lubrication path formed by the first and second lower oil grooves only opens when the guide rod descends to a specific stroke, achieving control of lubrication once per stamping cycle. This avoids the problems of insufficient or excessive lubrication, and the lubrication cycle is completely synchronized with the stamping action, requiring no external control and solving the shortcomings of traditional lubrication methods in terms of real-time performance and precision.

[0014] 2. This invention also applies pressure to the lubricating oil in the cavity via a second piston. The pressurized lubricating oil is guided at high speed to the porous metal oil-permeable bushing through the arc-shaped groove on the surface of the receiving bucket. This pressure lubrication method ensures that the lubricating oil can quickly and fully penetrate the micropores of the bushing. Compared with passive oil permeation, the lubricant delivery efficiency is higher, thereby forming a uniform and complete oil film on the surface of the guide rod. The porous metal oil-permeable bushing, as the terminal lubrication element, has its own oil storage and slow release functions, and can continuously provide lubrication to the guide rod. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the external structure of this utility model; Figure 2 This is a schematic diagram of the oil storage box and related structures of this utility model; Figure 3 This is a cross-sectional structural diagram of the present invention; Figure 4 This is a schematic diagram of the external structure of the oiling mechanism of this utility model; Figure 5 This is a schematic diagram of the lubrication mechanism of this utility model.

[0016] The following are the labels in the diagram: 1. Upper mold; 2. Guide rod; 3. Lower mold; 4. Guide sleeve; 5. Oil reservoir; 51. Oil inlet; 52. Cover; 6. Oil discharge mechanism; 61. Oil storage chamber; 611. Oil storage chamber; 62. First piston; 621. First lower oil groove; 622. Spiral groove; 63. Second piston; 631. Second lower oil groove; 64. Limiting block; 7. Lubrication mechanism; 71. Receiving hopper; 72. Arc groove; 73. Porous metal oil seepage bushing; 74. Micropore. Detailed Implementation

[0017] Example: Figures 1 to 5As shown, this utility model relates to a multi-point stamping forming equipment for a rear seat frame assembly, including a guide rod 2 and a guide sleeve 4 that cooperates with it. The guide rod 2 is located at the bottom of the upper die 1, and the guide sleeve 4 is located at the top of the lower die 3. An oil storage box 5 is fixedly installed on the top of the guide sleeve 4. An oil inlet 51 is opened on the outside of the oil storage box 5, and the oil inlet 51 is equipped with an openable and closable cover 52. The oil inlet 51 communicates with the oil storage cavity 61. An oil discharge mechanism 6 and a lubrication mechanism 7 are provided inside the oil storage box 5. The oil discharge mechanism 6 includes a first piston 62 and a second piston 63. The first piston 62 is rotatably installed on the outside of the guide rod 2, and the second piston 63 is fixedly installed on the outside of the guide rod 2. The first piston 62 has a first channel, and the second piston 63 has a second channel. The first channel is a through-hole. The first lower oil groove 621 penetrates the side wall of the first piston 62, and the second channel is a second lower oil groove 631 that penetrates the side wall of the second piston 63. A spiral groove 622 is provided on the outer side of the first piston 62. Sealing elements are provided between the first piston 62, the second piston 63, and the guide rod 2, and a sealing element is also provided between the guide rod 2 and the oil storage box 5. The lubrication mechanism 7 includes a receiving hopper 71, which is an inverted cone. An arc-shaped groove 72 is provided on the surface of the receiving hopper 71. The receiving hopper 71 is used to collect the lubricating oil leaking when the first channel and the second channel are connected. This utility model, through the ingenious cooperation between the spiral groove 622 on the outer side of the first piston 62 and the limiting block 64 fixed on the inner wall of the oil storage box 5, converts the vertical movement of the guide rod 2 into the rotational movement of the first piston 62. This design ensures that the lubrication path formed by the first lower oil groove 621 and the second lower oil groove 631 is only opened when the guide rod 2 descends to a specific stroke, realizing the control of lubrication once per stamping. It avoids the problems of insufficient or excessive lubrication. The lubrication cycle is completely synchronized with the stamping action. It has a high degree of intelligence and does not require external control, solving the shortcomings of traditional lubrication methods in terms of real-time performance and precision.

[0018] Furthermore, the oil supply mechanism 6 also includes a limiting block 64, which is fixedly installed inside the oil reservoir 5 and cooperates with the spiral groove 622. An oil storage chamber 61 is provided between the oil reservoir 5 and the first piston 62, and an oil storage chamber 611 is provided between the oil reservoir 5 and the second piston 63. The oil storage chamber 61 and the oil storage chamber 611 respectively realize the storage of lubricating oil and temporary buffering. The oil storage chamber 61 can store a sufficient amount of lubricating oil, reducing the need for frequent oil replenishment; the oil storage chamber 611 can temporarily accommodate the lubricating oil flowing in from the oil storage chamber 61 after the oil circuit is opened, preventing the lubricating oil from directly impacting the guide structure and causing oil splashing.

[0019] Furthermore, the lubrication mechanism 7 also includes a porous metal oil-permeable bushing 73, which is fixedly installed inside the receiving hopper 71 and sleeved on the outside of the guide rod 2. The porous metal oil-permeable bushing 73 has micropores 74 on its surface, and the outlet of the arc-shaped groove 72 leads to the porous metal oil-permeable bushing 73. Pressure is applied to the lubricating oil in the cavity by the second piston 63. The pressurized lubricating oil is guided at high speed to the porous metal oil-permeable bushing 73 through the arc-shaped groove 72 on the surface of the receiving hopper 71. This pressure lubrication method ensures that the lubricating oil can quickly and fully penetrate the micropores 74 of the bushing. Compared with passive oil permeation, the lubricant delivery efficiency is higher, thus forming a uniform and complete oil film on the surface of the guide rod 2. Using the porous metal oil-permeable bushing 73 as the terminal lubrication element, it has its own oil storage and slow-release functions, continuously providing lubrication to the guide rod 2.

[0020] It should be further noted that the porous metal oil-permeable bushing 73 is preferably manufactured by sintering using powder metallurgy. This bushing uses metal powder, such as bronze powder, iron-based powder, or stainless steel powder, as raw material. After pressing and high-temperature sintering, a large number of uniformly distributed and interconnected microporous networks are formed inside, thus possessing inherent porous characteristics. The micropores 74 refer to this pore network.

[0021] Working principle: This embodiment provides a multi-point stamping forming equipment for the rear seat frame assembly. When in use, the equipment is in standby mode when the stamping equipment is stationary or the guide rod 2 is in the upward / return state. At this time, due to the relative position of the spiral groove 622 on the outer side of the first piston 62 and the limiting block 64, the first lower oil groove 621 on it is offset from the second lower oil groove 631 of the second piston 63, the oil passage is completely cut off, and the lubricating oil in the oil storage chamber 61 is effectively sealed on the first piston 62 and cannot seep down.

[0022] When the stamping action begins, the guide rod 2 moves downward with the upper die 1, causing the upper piston to move downward together. During this process, the spiral groove 622 on the outer side of the first piston 62 interacts with the limiting block 64 on the inner wall of the oil reservoir 5, converting the vertical downward movement of the guide rod 2 into the rotational movement of the first piston 62. When the guide rod 2 moves down to a preset specific stroke position, the rotation of the first piston 62 just aligns its first lower oil groove 621 with the second lower oil groove 631 of the second piston 63, forming a continuous lubricating oil channel.

[0023] After the oil circuit is opened, the lubricating oil in the oil storage chamber 61 flows rapidly into the oil storage chamber 611 formed between the second piston 63 and the bottom of the oil storage box 5 under the action of gravity through the aligned first lower oil groove 621 and second lower oil groove 631. Subsequently, the guide rod 2 continues its downward stroke, pushing the first piston 62 to move downward, applying significant pressure to the lubricating oil in the oil storage chamber 611. The pressurized lubricating oil is transported at high speed and directionally to the porous metal oil seepage bushing 73 through the inverted bucket-shaped receiving bucket 71 at the bottom of the oil storage chamber 611 and the arc-shaped groove 72 on its surface.

[0024] Under pressure, the lubricating oil rapidly permeates and fills the micropores 74 inside the porous metal oil-permeable bushing 73. When the surface of the guide rod 2 passes through the porous metal oil-permeable bushing 73, the lubricating oil continuously and evenly seeps out from the micropores 74 under the action of capillary action and working frictional heat, forming a thin and complete lubricating film on the surface of the guide rod 2.

[0025] After the stamping process ends, the guide rod 2 begins to return upward. The upward movement drives the first piston 62 to rotate in the opposite direction, causing its first lower oil groove 621 to quickly misalign with the second lower oil groove 631 of the second piston 63, thus cutting off the lubrication oil circuit again. The system immediately stops supplying oil, and the device returns to the standby closed state until the next downward stroke of the stamping triggers a new round of lubrication cycle.

[0026] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A multi-point press forming apparatus for a rear large seat skeleton assembly, comprising a guide rod (2) and a guide sleeve (4) cooperating therewith, characterized in that, An oil storage box (5) is fixedly installed on the top of the guide sleeve (4), and an oil discharge mechanism (6) and a lubrication mechanism (7) are provided inside the oil storage box (5). The oil feeding mechanism (6) includes a first piston (62) and a second piston (63). The first piston (62) is rotatably mounted on the outside of the guide rod (2), and the second piston (63) is fixedly mounted on the outside of the guide rod (2). The first piston (62) has a first channel, and the second piston (63) has a second channel. A spiral groove (622) is opened on the outside of the first piston (62). The lubrication mechanism (7) includes a receiving bucket (71), which is an inverted cone and has an arc-shaped groove (72) on its surface. The receiving hopper (71) is used to receive the lubricating oil that leaks when the first channel and the second channel are connected.

2. A multi-point press forming apparatus for a rear large seat frame assembly according to claim 1, wherein The oil feeding mechanism (6) also includes a limiting block (64), which is fixedly installed inside the oil storage box (5) and cooperates with the spiral groove (622); An oil storage chamber (61) is provided between the oil storage box (5) and the first piston (62); An oil storage chamber (611) is provided between the oil storage box (5) and the second piston (63).

3. A multi-point press forming apparatus for a rear bulkhead assembly according to claim 2, wherein The lubrication mechanism (7) also includes a porous metal oil-permeable bushing (73), which is fixedly installed inside the receiving bucket (71) and sleeved on the outside of the guide rod (2). The porous metal oil-permeable bushing (73) has micropores (74) on its surface.

4. A multi-point press forming apparatus for a rear large seat frame assembly according to claim 2, wherein The first channel is a first lower oil groove (621) that penetrates the side wall of the first piston (62), and the second channel is a second lower oil groove (631) that penetrates the side wall of the second piston (63).

5. A multi-point press forming apparatus for a rear large seat frame assembly according to claim 3, wherein The outlet of the arc-shaped groove (72) leads to the porous metal oil-permeable bushing (73).

6. A multi-point stamping forming equipment for a rear seat frame assembly according to claim 2, characterized in that, A sealing element is provided between the first piston (62), the second piston (63), and the guide rod (2), and a sealing element is also provided between the guide rod (2) and the oil reservoir (5).

7. A multi-point stamping forming equipment for a rear seat frame assembly according to claim 2, characterized in that, The oil storage box (5) has an oil inlet (51) on its outer side. The oil inlet (51) is equipped with an openable and closable cover (52). The oil inlet (51) is connected to the oil storage cavity (61).

8. A multi-point stamping forming equipment for a rear seat frame assembly according to claim 1, characterized in that, The guide rod (2) is located at the bottom of the upper mold (1), and the guide sleeve (4) is located at the top of the lower mold (3).

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