Automobile seat aluminum profile extrusion device with high compression resistance

Abstract

The utility model relates to the technical field of aluminum profile processing, and discloses an automobile seat aluminum profile extrusion device with high compression resistance, which comprises a mounting seat, an upper die and a lower die, the top of the mounting seat is in bolted connection with two shells, inner cavities of the two shells are provided with main hydraulic chambers, a first-stage sub-chamber is nested in the main hydraulic chamber, and a second-stage sub-chamber is nested in the lower die. A second-stage sub-cavity is embedded in an inner cavity of the first-stage sub-cavity, a first throttling hole is formed in one end of the first-stage sub-cavity, second throttling holes are formed in the two ends of the second-stage sub-cavity, a piston is slidably connected to an inner cavity of the main hydraulic cavity, and an ejector rod is fixedly connected to an inner cavity of the piston. According to the utility model, the movement speed of the ejector rod can be controlled by adopting the shell with a multi-stage hydraulic chamber structure and a multi-stage throttling design, and in the lifting process of the ejector rod, hydraulic oil sequentially passes through all stages of sub-chambers with throttling holes with different diameters to gradually consume energy, so that the movement speed of the ejector rod is effectively inhibited and adjusted.

Description

Technical Field

[0001] This utility model relates to the field of aluminum profile processing technology, specifically to an extrusion device for automotive seat aluminum profiles with high compressive strength. Background Technology

[0002] An automotive seat aluminum profile extrusion unit is a specialized machine for manufacturing automotive seat frames and structural components. It primarily transforms aluminum ingots into the desired aluminum profiles under high pressure, suitable for the frame support structures of automotive seats. This equipment ensures that the extruded aluminum profiles possess excellent mechanical properties and dimensional stability, meeting the design and manufacturing requirements of automotive seats.

[0003] Chinese Patent Publication No. (CN222133171U) discloses an aluminum profile extrusion device, including a base plate and a top plate. The upper end of the base plate is provided with an aluminum profile extrusion lower die, and a push block assembly is provided inside the aluminum profile extrusion lower die. The lower end of the top plate is movably provided with an aluminum profile extrusion upper die. The push block assembly includes a push block and a spring. The lower end of the push block is provided with a spring. The push block is embedded in the die wall of the aluminum profile extrusion lower die. The base plate and the top plate are fixedly connected by a vertical plate. A fixing seat is integrally provided on the upper surface of the base plate. The fixing seat is provided with a through groove and a recess. The recess is formed on the top inner wall of the through groove, and the recess and the through groove are interconnected.

[0004] The aforementioned comparative document mainly utilizes the rebound force of a spring and a sliding rod to push the push block, causing the extruded aluminum material to move upward quickly and detach from the lower mold. However, this rapid upward movement process generates a large impact force, which may damage the aluminum material itself, such as causing scratches or deformation on the surface. This not only reduces the quality of the aluminum material but may also cause problems in subsequent processing, increasing processing costs and time.

[0005] In view of this, the present invention solves the above-mentioned technical problems by proposing an extrusion device for automotive seat aluminum profiles with high compressive strength. Utility Model Content

[0006] To address the shortcomings of the aforementioned background technology, this utility model provides a technical solution for an aluminum profile extrusion device for automotive seats with high compressive strength. It employs a multi-stage hydraulic chamber structure in the housing, and through a multi-stage throttling design, the movement speed of the ejector pin can be controlled. During the upward or downward movement of the ejector pin, hydraulic oil sequentially passes through various sub-chambers with throttling orifices of different diameters, gradually consuming energy and effectively suppressing and regulating the ejector pin's movement speed. This prevents excessive impact force from the push plate during aluminum demolding, thus avoiding damage to the aluminum material caused by the excessive force.

[0007] This utility model provides the following technical solution: an aluminum profile extrusion device for automobile seats with high compressive strength, including a mounting base, an upper mold, and a lower mold. The top of the mounting base is bolted to two housings. The inner cavities of the two housings are provided with main hydraulic chambers. A first-level sub-cavity is nested inside the main hydraulic chamber. A second-level sub-cavity is nested inside the first-level sub-cavity. A first throttling orifice is provided at one end of the first-level sub-cavity. A second throttling orifice is provided at both ends of the second-level sub-cavity. A piston is slidably connected to the inner cavity of the main hydraulic chamber. A push rod is fixedly connected to the inner cavity of the piston.

[0008] As a preferred embodiment of this utility model, the number of the first throttling orifices is eight, and the number of the second throttling orifices is ten. The diameter of the first throttling orifice is 1 to 2 mm, and the diameter of the second throttling orifice is 0.5 to 1 mm. The first-stage sub-chamber and the second-stage sub-chamber are fixedly connected by welding.

[0009] As a preferred embodiment of this utility model, the inner wall of the main hydraulic chamber away from the piston is provided with a return channel, and the return channel is connected to the second-stage sub-chamber.

[0010] As a preferred embodiment of this utility model, the surface of the push rod is threadedly connected to a fixing sleeve, the surface of the housing is threadedly connected to a threaded ring, a return spring is fitted on the opposite side of the fixing sleeve and the threaded ring, and a pusher plate is slidably connected to the inner cavity of the lower mold, and the pusher plate is bolted to one end of the fixing sleeve.

[0011] As a preferred embodiment of this utility model, a cylinder is fixedly connected to the top of the mounting base, and one end of the cylinder telescopic rod is bolted to the top of the upper mold.

[0012] As a preferred embodiment of this utility model, the inner cavity of the upper mold is fixedly connected with four guide pillars, and the inner cavity of the lower mold is fixedly connected with four buffer sleeves.

[0013] As a preferred embodiment of this utility model, the four guide posts correspond to the four buffer sleeves, and the guide posts and buffer sleeves are all fixedly connected to the upper mold and the lower mold by bolts.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The shell of the multi-stage hydraulic chamber structure of this utility model can control the movement speed of the ejector rod through a multi-stage throttling design. During the upward or downward movement of the ejector rod, the hydraulic oil passes through the sub-chambers of different diameter throttling holes in sequence, gradually consuming energy, so that the movement speed of the ejector rod is effectively suppressed and regulated, thereby avoiding excessive impact force of the push plate during the demolding process of aluminum material, which may cause damage to the aluminum material.

[0016] 2. The combination of multi-stage sub-chambers and throttling orifices of different diameters in this utility model enables the housing to adaptively adjust the damping force according to the change in the speed of the push rod. When the push rod moves quickly, the hydraulic oil flow is large, and the resistance generated through the throttling orifice increases accordingly, thus enhancing the damping force. When the speed is slow, the hydraulic oil flow is small, the resistance of the throttling orifice decreases, and the damping force weakens. This adaptive adjustment function enables the housing to maintain the best buffering effect under various complex working conditions, improving the applicability and working stability of the equipment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the shell structure of this utility model;

[0019] Figure 3 This is a cross-sectional view of the present invention;

[0020] Figure 4 This is a partially enlarged view of the present invention;

[0021] Figure 5 This is an exploded view of the present invention;

[0022] Figure 6 This is a schematic diagram of the pusher plate structure of this utility model.

[0023] In the diagram: 1. Mounting base; 101. Upper mold; 102. Lower mold; 2. Housing; 201. Main hydraulic chamber; 202. First-stage sub-chamber; 203. Second-stage sub-chamber; 204. First throttling orifice; 205. Second throttling orifice; 206. Piston; 207. Push rod; 3. Return channel; 4. Fixing sleeve; 401. Threaded ring; 402. Return spring; 403. Push plate; 5. Cylinder; 6. Guide post; 601. Buffer sleeve. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-6As shown, an aluminum profile extrusion device for automotive seats with high compressive strength includes a mounting base 1, an upper die 101, and a lower die 102. Two housings 2 are bolted to the top of the mounting base 1. Each housing 2 has a main hydraulic chamber 201 inside. A first-stage sub-chamber 202 is nested inside the main hydraulic chamber 201. A second-stage sub-chamber 203 is nested inside the first-stage sub-chamber 202. A first throttling orifice 204 is opened at one end of the first-stage sub-chamber 202, and second throttling orifices 205 are opened at both ends of the second-stage sub-chamber 203. A piston 206 is slidably connected to the inner cavity of the main hydraulic chamber 201, and a push rod 207 is fixedly connected to the inner cavity of the piston 206. There are eight first throttling orifices 204 and ten second throttling orifices 205. The diameter of the first throttling orifices 204 is 1 to 2 mm, and the diameter of the second throttling orifices 205 is 0.5 to 1 mm. The first-stage sub-chamber 202 and the second... The sub-chamber 203 is fixedly connected by welding. The inner wall of the main hydraulic chamber 201 away from the piston 206 is provided with a return channel 3, which communicates with the second sub-chamber 203. The surface of the push rod 207 is threadedly connected with a fixing sleeve 4. The surface of the housing 2 is threadedly connected with a threaded ring 401. The opposite surfaces of the fixing sleeve 4 and the threaded ring 401 are fitted with a return spring 402. The inner cavity of the lower mold 102 is slidably connected with a push plate 403. The push plate 403 is bolted to one end of the fixing sleeve 4. The top of the mounting base 1 is fixedly connected with a cylinder 5. One end of the telescopic rod of the cylinder 5 is bolted to the top of the upper mold 101. The inner cavity of the upper mold 101 is fixedly connected with four guide pillars 6. The inner cavity of the lower mold 102 is fixedly connected with four buffer sleeves 601. The positions of the four guide pillars 6 and the four buffer sleeves 601 are corresponding. The guide pillars 6 and the buffer sleeves 601 are all fixedly connected to the upper mold 101 and the lower mold 102 by bolts.

[0026] The housing 2 is made of 7075 aluminum alloy, which has good strength and corrosion resistance and can effectively withstand the high pressure generated by the hydraulic system. The main hydraulic chamber 201 is circular in shape. The first-stage sub-chamber 202 is nested inside the main hydraulic chamber 201 and is also cylindrical. Its outer diameter is tightly fitted with the inner diameter of the main hydraulic chamber 201 to ensure that the hydraulic oil will not leak in the gap between the two. The second-stage sub-chamber 203 is nested inside the first-stage sub-chamber 202 and is also cylindrical in shape. Its outer diameter is tightly fitted with the inner diameter of the first-stage sub-chamber 201.

[0027] By setting the threaded ring 401, rotating the threaded ring 401 can raise and lower the threaded ring 401, thereby adjusting the compression ratio of the return spring 402.

[0028] Initial state of push rod 207: In the initial stage, push rod 207 is in a stationary position, and piston 206 connected to push rod 207 is located at the top of main hydraulic chamber 201. At this time, main hydraulic chamber 201, first-stage sub-chamber 202 and second-stage sub-chamber 203 are all filled with hydraulic oil, the system is in a stable equilibrium state, and the hydraulic oil does not flow.

[0029] The downward movement of push rod 207:

[0030] When the upward movement of the ejector rod 207 stops, the aluminum profile is placed on top of the lower mold 102. Then, the cylinder 5 is activated, causing the telescopic rod of the cylinder 5 to move the upper mold 101 up and down, closing with the lower mold 102. During the mold closing process, the guide post 6 enters the inner cavity of the buffer sleeve 601 to reduce the buffering force during mold closing. When the upper mold 101 contacts the aluminum profile, it will compress and deform the aluminum profile. During the deformation process, the aluminum profile will compress the pusher plate 403, causing the pusher plate 403 to drive the ejector rod 207 to begin moving downward. At the same time, the piston 206 also moves downward. At this time, the main hydraulic chamber 201 moves away from the top. As the space at one end of rod 207 decreases, the hydraulic oil is compressed, increasing the pressure. The hydraulic oil begins to flow from the main hydraulic chamber 201 to the second-stage sub-chamber 203. The flow path is opposite to the return path of the hydraulic oil when the push rod 207 moves upward. The hydraulic oil flows into the second-stage sub-chamber 203 through the return channel 3 between the second-stage sub-chamber 203 and the main hydraulic chamber 201. Similarly, during the inflow process, the hydraulic oil needs to pass through the second throttling orifice 205 at one end of the second-stage sub-chamber 203. These second throttling orifices 205 create resistance to the inflow of hydraulic oil, slowing down the flow rate of the hydraulic oil, thereby initially suppressing the downward speed of the push rod 207.

[0031] As the push rod 207 continues to move downward, the hydraulic oil in the second-stage sub-chamber 203 increases, and the pressure rises. When the pressure reaches a certain level, the hydraulic oil will flow into the first-stage sub-chamber 202 through the second throttle orifice 205. As the hydraulic oil in the first-stage sub-chamber 202 increases, the pressure rises. When the pressure reaches a certain level, the hydraulic oil will be discharged through the first throttle orifice 204. When the hydraulic oil passes through the first throttle orifice 204, it will encounter greater resistance again, further reducing the flow rate and playing a secondary role in suppressing the downward speed of the push rod 207, thus enhancing the damping effect.

[0032] The upward movement of push rod 207:

[0033] When the upper mold 101 stops extruding the aluminum profile, the return spring 402 will drive the pusher plate 403 to move upward, and at the same time drive the ejector rod 207 to start moving upward. The piston 206 will move upward synchronously. As the piston 206 moves upward, the space between the piston 206 and the end of the main hydraulic chamber 201 near the ejector rod 207 gradually decreases. The hydraulic oil is squeezed and the pressure increases. Under the action of the pressure difference, the hydraulic oil flows into the first stage sub-chamber 202 through the first throttling orifice 204. Since these first throttling orifices 204 have relatively small diameters and are numerous, according to the principle of fluid mechanics, when the hydraulic oil passes through these small-diameter first throttling orifices 204 at high speed, the flow rate increases significantly and the pressure decreases significantly. The presence of a large number of first throttling orifices 204 makes the hydraulic oil encounter greater resistance in the process of flowing into the first stage sub-chamber 202, thereby initially slowing down the rising speed of the ejector rod 207 and realizing the first stage of damping buffering.

[0034] As the push rod 207 continues to move upward, hydraulic oil continuously flows into the first-stage sub-chamber 202, and its internal pressure gradually increases. The hydraulic oil is forced to flow into the second-stage sub-chamber 203 through the second throttle orifice 205. The diameter of the second throttle orifice 205 in the second-stage sub-chamber 203 is smaller than that of the first throttle orifice 204 in the first-stage sub-chamber 202. This means that the hydraulic oil will encounter greater resistance when passing through. In the process of overcoming this strong resistance, the flow speed of the hydraulic oil is further reduced, thereby inhibiting the movement speed of the push rod 207 again and enhancing the buffering effect of the entire damping system.

[0035] The hydraulic oil flowing into the second-stage sub-chamber 203 needs to return to the main hydraulic chamber 201 after completing the second-stage throttling damping action to maintain the circulation of hydraulic oil in the system. As the push rod 207 moves upward, the end of the main hydraulic chamber 201 away from the piston 206 gradually increases in space due to the displacement of the piston 206, forming a relatively low-pressure area. The hydraulic oil with higher pressure in the second-stage sub-chamber 203, driven by the pressure difference, flows back to the low-pressure area of ​​the main hydraulic chamber 201 through the return channel 3, preparing for the next movement of the push rod 207 and the compression of the hydraulic oil by the piston 206, ensuring that the system can continuously and stably provide the damping function.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Additionally, in the accompanying drawings of this utility model, the fill patterns are merely for distinguishing layers and do not constitute any other limitation.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An extrusion apparatus for automotive seat aluminum profiles with high compressive strength, comprising: The mounting base (1), upper mold (101), and lower mold (102) are characterized in that: the top of the mounting base (1) is bolted to two housings (2), and the inner cavity of each of the two housings (2) is provided with a main hydraulic chamber (201). The main hydraulic chamber (201) is nested with a first-level sub-chamber (202), and the inner cavity of the first-level sub-chamber (202) is nested with a second-level sub-chamber (203). One end of the first-level sub-chamber (202) is provided with a first throttling hole (204), and both ends of the second-level sub-chamber (203) are provided with second throttling holes (205). The inner cavity of the main hydraulic chamber (201) is slidably connected to a piston (206), and the inner cavity of the piston (206) is fixedly connected to a push rod (207).

2. The extrusion apparatus for automotive seat aluminum profiles with high compressive strength according to claim 1, characterized in that: The number of the first throttling orifice (204) is eight, and the number of the second throttling orifice (205) is ten. The diameter of the first throttling orifice (204) is 1 to 2 mm, and the diameter of the second throttling orifice (205) is 0.5 to 1 mm. The first sub-chamber (202) and the second sub-chamber (203) are fixedly connected by welding.

3. The extrusion apparatus for automotive seat aluminum profiles with high compressive strength according to claim 1, characterized in that: The main hydraulic chamber (201) has a return channel (3) on its inner wall away from the piston (206), and the return channel (3) is connected to the second-stage sub-chamber (203).

4. The extrusion apparatus for automotive seat aluminum profiles with high compressive strength according to claim 1, characterized in that: The top rod (207) is threaded with a fixing sleeve (4), the housing (2) is threaded with a threaded ring (401), the fixing sleeve (4) and the threaded ring (401) are fitted with a return spring (402), the inner cavity of the lower mold (102) is slidably connected with a pusher plate (403), and the pusher plate (403) is bolted to one end of the fixing sleeve (4).

5. The extrusion apparatus for automotive seat aluminum profiles with high compressive strength according to claim 1, characterized in that: A cylinder (5) is fixedly connected to the top of the mounting base (1), and one end of the telescopic rod of the cylinder (5) is bolted to the top of the upper mold (101).

6. The extrusion apparatus for automotive seat aluminum profiles with high compressive strength according to claim 1, characterized in that: The inner cavity of the upper mold (101) is fixedly connected with four guide pillars (6), and the inner cavity of the lower mold (102) is fixedly connected with four buffer sleeves (601).

7. The extrusion apparatus for automotive seat aluminum profiles with high compressive strength according to claim 6, characterized in that: The four guide posts (6) are positioned corresponding to the four buffer sleeves (601), and the guide posts (6) and buffer sleeves (601) are fixedly connected to the upper mold (101) and the lower mold (102) by bolts.

Images