A processing technology and device for double-head angle adjuster of automobile seat

Abstract

The present invention discloses a processing technology and device for a double-head angle adjuster for a car seat, which relates to the technical field of automobile parts processing, and includes the following steps: S1, clamping a pipe fitting by a clamp and installing a part on the pipe fitting; S2, forming a high-pressure space in the pipe fitting; S3, squeezing the end of the pipe fitting twice, the pipe fitting forms a first package and a second package on both sides of the part, and the part is clamped between the first package and the second package. In view of the problem of low yield rate in the prior art, the present invention utilizes the high-pressure space in the pipe fitting, and the side wall of the pipe fitting is supported by air pressure, so that the pipe fitting is not prone to internal extrusion in the middle during the extrusion process, thereby greatly improving the processing yield rate, reducing the defective rate, and improving production efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of automobile parts processing, and more specifically, to a processing technology of a double-head angle adjuster for an automobile seat. Background Art

[0002] With the rapid development of the automobile industry in China in recent years, the rapid development of automobile parts processing technology has been driven.

[0003] For the existing double-head car seat recliner, such as Figure 1 As shown, it includes a pipe fitting 1, parts 2 are fixed at both ends of the pipe fitting 1, and the parts 2 are sleeved on the pipe fitting 1. The two parts 2 can be the same or different. The side walls of the pipe fitting 1 are bulged on both sides of the parts 2 and are provided with extruded packages, wherein the extruded package close to the middle of the pipe fitting 1 is the first package 3, and the extruded package on the other side is the second package 4, and the first package 3 and the second package 4 are used to clamp and fix the parts 2. The processing technology of the double-headed recliner for automobile seats is: clamp the pipe fitting 1 with a clamp; sleeve the parts 2 on both ends of the pipe fitting 1 respectively; squeeze the ends of the pipe fitting 1 with a hydraulic device, so that the side walls of the pipe fitting 1 bulge outward on both sides of the parts 2, forming the first package 3 and the second package 4 respectively, and fixing the parts 2 on the pipe fitting 1.

[0004] In the existing processing technology, after the pipe is extruded, it may bulge towards the pipe, forming an internal extrusion bag, and then the part cannot be fixed on the pipe. Therefore, in the process of using the existing processing technology, a certain amount of defective products will be produced, resulting in waste of raw materials and low production efficiency. Summary of the invention

[0005] In view of the problem of low yield rate in the prior art, the purpose of the present invention is to provide a processing technology for a double-head recliner for a car seat, which can effectively improve the yield rate of product processing and reduce resource waste.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A processing technology for a double-head angle adjuster for a car seat comprises the following steps:

[0008] S1, clamp the pipe fitting by a fixture and install parts on the pipe fitting;

[0009] S2, forming a high-pressure space inside the pipe;

[0010] S3, extruding the end of the pipe fitting twice, the pipe fitting forms a first package and a second package on both sides of the part respectively, and the part is clamped between the first package and the second package.

[0011] Through the above technical scheme, after the space inside the pipe is subjected to high pressure treatment, the extrusion operation is carried out. After the two ends of the pipe are squeezed, since there is a high-pressure space inside the pipe, the side wall of the pipe is supported by air pressure, and the pipe is not prone to internal extrusion in the middle, thereby greatly improving the processing yield, reducing the defective rate, and improving production efficiency.

[0012] Furthermore, in step S2, positioning columns are inserted into the pipe fitting from both ends thereof, and step grooves are provided around the positioning columns for squeezing the ends of the pipe fitting.

[0013] Through the above technical solution, the positioning column is inserted into the pipe fitting. On the one hand, it is used to position the pipe fitting and improve the processing accuracy. On the other hand, it squeezes the air in the pipe fitting to form a high-pressure space in the pipe fitting. After the end of the pipe fitting is squeezed, it is not easy for internal extrusion to occur in the middle.

[0014] Furthermore, the peripheral side of the positioning column is configured as a smooth surface that completely fits the inner wall of the pipe.

[0015] Through the above technical solution, the fitting effect between the positioning column and the inner wall of the pipe is improved. During the process of inserting the positioning column into the pipe, the sealing is good, ensuring that a high-pressure space is formed in the pipe.

[0016] Furthermore, a piston cavity is provided at one end of the positioning column along its axial direction, and a piston valve for compressing the air inside the pipe is slidably connected in the piston cavity.

[0017] Through the above technical solution, the piston valve is utilized to slide in the piston cavity to further squeeze the space in the pipe fitting, thereby further increasing the pressure in the pipe fitting.

[0018] Furthermore, a sliding rod for pushing the positioning column to extrude the pipe fitting is slidably provided at one end of the positioning column, and the sliding rod is fixedly connected to the piston valve.

[0019] Through the above technical solution, the sliding rod slides, and in the process of approaching and then driving the positioning column to slide, the piston valve is driven to slide in the piston cavity, thereby increasing the pressure in the pipe fitting.

[0020] Furthermore, a reset member for pushing the sliding rod to separate from the positioning post is provided between the sliding rod and the positioning post.

[0021] Through the above technical solution, the reset member is used to push the sliding rod to separate from the positioning column, completing the reset action, so as to facilitate the next package extrusion operation.

[0022] Furthermore, the reset element is a compression spring;

[0023] A connecting rod is arranged between the piston valve and the sliding rod, and the reset member is sleeved on the connecting rod.

[0024] Through the above technical solution, the reset part is positioned to improve the stability of processing.

[0025] Furthermore, in step S3, the extrusion stroke of the sliding rod is accurately controlled;

[0026] After the first extrusion of the pipe end, the stroke of the sliding rod is compensated, and then the second extrusion operation is carried out.

[0027] Through the above technical solution, the extrusion stroke of the sliding rod can be accurately controlled, which is beneficial to accurately control the size of the extruded package and improve product precision.

[0028] A double-headed recliner processing device for a car seat, based on the above-mentioned double-headed recliner processing technology for a car seat, comprises a body, a clamp is arranged on the body, and a bag squeezing device is arranged at both ends of the clamp;

[0029] The extrusion device comprises a truncated head slidably connected to the body, the truncated head is elastically slidably connected to an outer sleeve at a side surface close to the clamp, an inner sleeve is fixed inside the outer sleeve, one end of the inner sleeve is slidably connected to the truncated head, a positioning column is slidably connected inside the inner sleeve, a positioning groove for placing parts is provided at one end of the outer sleeve close to the clamp, a clamping groove for clamping pipe fittings is provided on the clamp, a first annular groove is provided at one end of the clamping groove close to the outer sleeve, and a second annular groove is provided at one end of the inner sleeve close to the clamp;

[0030] The inner sleeve is also provided with a piston valve, a sliding rod, a reset member and a connecting rod;

[0031] The upsetting head is also provided with a top block for pushing the sliding rod to slide.

[0032] Through the above technical scheme, when in use, the fixture first clamps the pipe fitting on the fuselage, puts the parts to be fixed in the positioning groove, and then starts the hydraulic cylinder to push the upsetting head to slide, and the upsetting head drives the outer sleeve close to the fixture until it is tightly pressed against one side of the fixture. At the same time, the positioning column is inserted into the pipe fitting, and the hydraulic cylinder continues to push the upsetting head to slide, and the elastic sliding structure between the upsetting head and the outer sleeve shrinks, and the sliding rod is connected to the flat surface of the top block, and then the upsetting head drives the top block, and the top block passes through the sliding rod, and the sliding rod compresses the reset part again, and connects with the positioning column, pushing the positioning column to push the end of the pipe fitting, squeezing the pipe fitting to form a first package, and at the same time, the positioning column is inserted into the pipe fitting, and the piston valve slides to achieve double pressurization of the inside of the pipe fitting to ensure that the middle part of the pipe fitting will not bend inward to form an internal squeeze package.

[0033] Furthermore, the top block is lifted and lowered on the heading head, and a protrusion for compensating for the sliding distance of the sliding rod is provided on the side of the top block facing the sliding rod.

[0034] Through the above technical solution, when processing the second package, the hydraulic cylinder drives the heading to slide away from the clamp, drives the positioning column to be completely pulled out of the pipe fitting, starts the cylinder, pushes the top block to slide up, makes the raised part of the top block and the sliding rod to be at the same height, and then the hydraulic cylinder works with the same stroke, repeats the above action, the difference is that the sliding rod is connected to the raised part of the top block, just compensates the travel distance of one package of the sliding rod, so that the second package is squeezed out of the pipe fitting, and there is no need to adjust the stroke of the hydraulic cylinder again.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] (1) By creating a high-pressure space inside the pipe fitting and using air pressure to prop up the side wall of the pipe fitting, the pipe fitting is not prone to internal extrusion in the middle, thereby greatly improving the processing yield, reducing the defective rate, and improving production efficiency;

[0037] (2) Furthermore, positioning pins are inserted into both ends of the pipe, which not only play a positioning role, but also can be used to squeeze the space inside the pipe to form a high-pressure space;

[0038] (3) Further, by sliding the piston valve and inserting the positioning column, the pressure in the space of the pipe fitting is increased twice to ensure that the pressure in the pipe fitting is sufficient;

[0039] (4) Furthermore, the top block is raised and lowered, and the stroke of the sliding rod is changed by utilizing the raised portion on the top block. In the process of squeezing out the second package, there is no need to adjust the stroke of the hydraulic cylinder again. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a schematic diagram of the overall structure of a double-head recliner for a car seat;

[0041] Figure 2 It is a process flow diagram of the present invention;

[0042] Figure 3 It is a schematic diagram of the process flow in the present invention;

[0043] Figure 4 It is a schematic diagram of the overall structure of the device in the present invention;

[0044] Figure 5 is along Figure 4 Sectional view along line AA;

[0045] Figure 6 is along Figure 4 Schematic diagram of the local structure after sectioning along the AA line.

[0046] Figure numerals: 1. pipe fitting; 2. part; 3. first package; 4. second package; 5. positioning column; 6. step groove; 7. piston chamber; 8. piston valve; 9. sliding rod; 10. reset member; 11. connecting rod; 12. fuselage; 13. clamp; 14. upsetting head; 15. outer sleeve; 16. inner sleeve; 17. positioning groove; 18. clamping groove; 19. first ring groove; 20. second ring groove; 21. top block; 22. protrusion; 23. elastic connection structure; 24. cylinder. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solution and beneficial effects of the present invention more clear, the present invention is further described in detail below in conjunction with embodiments and drawings, but the embodiments of the present invention are not limited thereto.

[0048] A processing technology for a double-head angle adjuster for a car seat, such as Figure 2 and Figure 3 As shown, the following steps are included:

[0049] S1, clamp the pipe 1 by the clamp 13 and install the part 2 on the pipe 1;

[0050] S2, insert the positioning column 5 into the pipe fitting 1 from both ends thereof, the side of the positioning column 5 is provided with a step groove 6 for squeezing the end of the pipe fitting 1, and the side surface of the positioning column 5 is set to be a smooth surface that completely fits the inner wall of the pipe fitting 1. Since the side wall of the positioning column 5 completely fits the inner wall of the pipe fitting 1, after the positioning column 5 is inserted into the pipe fitting 1, it can not only play a role in positioning the pipe fitting 1, which is convenient for subsequent high-precision processing, but also squeeze the air in the middle of the pipe fitting 1 to form a high-pressure cavity in the pipe fitting 1. In the subsequent extrusion process, the pipe fitting 1 is not easy to bend inward, causing the problem of processing failure;

[0051] A sliding rod 9 for pushing the positioning column 5 to extrude the pipe fitting 1 is slidably provided at one end of the positioning column 5, a piston chamber 7 is provided along its axial direction at one end of the positioning column 5 away from the sliding rod 9, a piston valve 8 for compressing the air inside the pipe fitting 1 is slidably connected in the piston chamber 7, a connecting rod 11 is fixed on the piston valve 8, one end of the connecting rod 11 away from the piston valve 8 passes through the positioning column 5 and is fixed to the sliding rod 9, a reset member 10 for pushing the sliding rod 9 to separate from the positioning column 5 is sleeved on the connecting rod 11 between the sliding rod 9 and the positioning column 5, and the reset member 10 is a compression spring.

[0052] When in use, the sliding rod 9 slides in the direction close to the clamp 13, and the positioning column 5 is pushed by the reset member 10 to slide and insert into the pipe fitting 1, so that the pipe fitting 1 is initially pressurized. Then the sliding rod 9 continues to approach the clamp 13, and the compression spring is compressed. The sliding rod 9 drives the piston valve 8 to slide in the piston chamber 7, so that the pipe fitting 1 is pressurized for the second time, and the pipe fitting 1 is prevented from bulging inside during the squeezing process.

[0053] S3, the end of the pipe fitting 1 is extruded twice, and the pipe fitting 1 forms a first package 3 and a second package 4 on both sides of the part 2, respectively, and the part 2 is clamped between the first package 3 and the second package 4.

[0054] The specific processing steps are as follows: after the piston valve 8 is pushed to the limit position, the sliding rod 9 contacts the positioning column 5, and the pipe fitting 1 is squeezed through the step groove 6 on the positioning column 5, and the distance of squeezing the pipe fitting 1 is the distance of a squeezing bag; then, the positioning column 5 slides, thereby leaving the pipe fitting 1, compensating for the stroke of the sliding rod 9, and increasing the stroke distance of a squeezing bag, and then the sliding rod 9 slides two squeezing bag strokes to extrude the end of the pipe fitting 1. After two extrusion operations, the pipe fitting 1 forms a bag on each side of the part 2, thereby clamping the part 2 on the pipe fitting 1.

[0055] The present invention applies pressure to the inside of the pipe 1 twice by inserting the positioning column 5 and sliding the piston valve 8, thereby improving the positioning and processing accuracy of the pipe 1 and effectively preventing the pipe 1 from bending inward to form internal extrusion during the extrusion operation.

[0056] A double-head angle adjuster processing device for a car seat, such as Figure 4 and Figure 5 As shown, based on the above-mentioned processing technology of a double-head angle adjuster for a car seat, it includes a fuselage 12, on which a clamp 13 is arranged, the clamp 13 includes an upper seat and a lower seat, the lower seat is fixed on the fuselage 12, and both the upper seat and the lower seat are provided with a clamping groove 18 with a semicircular cross-section, and a hydraulic cylinder for driving the upper seat to rise and fall is fixed above the fuselage 12.

[0057] like Figure 3 and Figure 6 As shown, both ends of the clamp 13 are provided with a bag squeezing device, which includes a heading 14 slidably connected to the body 12. The body 12 is also provided with a second hydraulic cylinder for pushing the heading 14 to slide in a direction close to the clamp 13. The side of the heading 14 away from the second hydraulic cylinder is elastically slidably connected to the outer sleeve 15, and its elastic connection structure 23 is: a sliding rod is fixed on the outer sleeve 15, and one end of the sliding rod away from the outer sleeve 15 is slidably connected to the inside of the heading 14, and a spring is sleeved on the sliding rod between the outer sleeve 15 and the heading 14. An inner sleeve 16 is fixed in the outer sleeve 15, and one end of the inner sleeve 16 away from the outer sleeve 15 is slidably connected to the upsetting head 14. A positioning column 5 and a sliding rod 9 are arranged in the inner sleeve 16. A piston cavity 7 and a piston valve 8 are arranged in the positioning column 5. A connecting rod 11 and a reset member 10 are arranged between the piston valve 8 and the sliding rod 9. The arrangement method of the positioning column 5, the sliding rod 9, the piston cavity 7, the piston valve 8 and the reset member 10 is the same as in the above-mentioned processing technology of the double-headed angle adjuster for a car seat.

[0058] A positioning groove 17 for placing the part 2 is formed at one end of the outer sleeve 15 close to the clamp 13. If the parts 2 at both ends of the pipe fitting 1 are different, the positioning grooves 17 on both sides can be set to different shapes. The clamp 13 has a first annular groove 19 formed at one end of the clamp groove 18 close to the outer sleeve 15, and a second annular groove 20 is formed at one end of the inner sleeve 16 close to the clamp 13. The first annular groove 19 and the second annular groove 20 are respectively located on both sides of the positioning groove 17. The first annular groove 19 and the second annular groove 20 are respectively used to accommodate the first package 3 and the second package 4 formed after the pipe fitting 1 is extruded.

[0059] A top block 21 is connected to the upsetting head 14 for lifting and lowering. The lifting and lowering of the top block 21 is achieved by a cylinder 24 pushing a chute mechanism. The chute mechanism includes a slider with a chute provided on the slider. A slide groove is provided on the top block 21 along its length direction. A slide rod is slidably connected between the chute and the slide groove. The two ends of the slide rod extend into the slide groove and the chute respectively. The cylinder 24 pushes the slider to slide, thereby driving the top block 21 to rise and fall, and a protrusion 22 is integrally provided on the side of the top block 21 facing the sliding rod 9.

[0060] When the above device is used, the pipe fitting 1 is first clamped on the fuselage 12 by the clamp 13, and the part 2 to be fixed is placed in the positioning groove 17, and then the hydraulic cylinder is started to push the upsetting head 14 to slide, and the upsetting head 14 drives the outer sleeve 15 to approach the clamp 13 until it is tightly pressed against one side of the clamp 13. At the same time, the positioning column 5 is inserted into the pipe fitting 1, and the hydraulic cylinder continues to push the upsetting head 14 to slide, and the elastic sliding structure between the upsetting head 14 and the outer sleeve 15 shrinks, and the sliding rod 9 is connected to the flat surface of the top block 21, and then the upsetting head 14 drives the top block 21, and the top block 21 passes through the sliding rod 9, and the sliding rod 9 compresses the reset member 10 again, and is connected with the positioning column 5, pushing the positioning column 5 to push the end of the pipe fitting 1, squeezing the pipe fitting 1 to form the first package 3, and at the same time, the positioning column 5 is inserted into the pipe fitting 1, and the piston valve 8 slides to realize the double pressurization of the inside of the pipe fitting 1, ensuring that the middle part of the pipe fitting 1 will not bend inward to form an internal squeeze package;

[0061] Then the second package 4 is processed, and the specific steps are as follows: the hydraulic cylinder drives the heading 14 to slide away from the clamp 13, drives the positioning column 5 to be completely pulled out of the pipe 1, starts the cylinder 24, pushes the top block 21 to slide up, makes the raised portion 22 of the top block 21 and the sliding rod 9 to be at the same height, and then the hydraulic cylinder works with the same stroke, repeats the above actions, the difference is that the sliding rod 9 is connected to the raised portion 22 of the top block 21, just compensates for the travel distance of one package of the sliding rod 9, so that the second package 4 is squeezed out of the pipe 1, and there is no need to adjust the stroke of the hydraulic cylinder again.

[0062] In summary:

[0063] When the present invention is used, a high-pressure space is created in the pipe fitting 1, and the side wall of the pipe fitting 1 is propped up by air pressure, so that the pipe fitting 1 is not prone to internal extrusion in the middle, thereby greatly improving the processing yield, reducing the defective rate, and improving production efficiency; the positioning column 5 is inserted into both ends of the pipe fitting 1, which not only plays a positioning role, but also can be used to extrude the space in the pipe fitting 1 to form a high-pressure space; the pressure in the space in the pipe fitting 1 is increased twice by the sliding of the piston valve 8 and the insertion of the positioning column 5, ensuring that the pressure in the pipe fitting 1 is sufficient; the top block 21 is raised and lowered, and the stroke of the sliding rod 9 is changed by the protrusion 22 on the top block 21. In the process of squeezing out the second package 4, there is no need to adjust the stroke of the hydraulic cylinder again.

[0064] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A processing technology for a double-headed angle adjuster for a car seat, characterized in that: The steps include: S1, clamping the pipe fitting (1) by means of a clamp (13), and installing a part (2) on the pipe fitting (1); S2, forming a high-pressure space in the pipe fitting (1); in step S2, a positioning column (5) is inserted into the pipe fitting (1) from both ends of the pipe fitting (1), and a step groove (6) is provided on the circumference of the positioning column (5) for squeezing the end of the pipe fitting (1); the circumference of the positioning column (5) is provided as a smooth surface that is completely in contact with the inner wall of the pipe fitting (1); a piston cavity (7) is provided at one end of the positioning column (5) along its axial direction, and a piston valve (8) is slidably connected in the piston cavity (7) for compressing the air inside the pipe fitting (1); a sliding rod (9) is slidably provided at one end of the positioning column (5) for pushing the positioning column (5) to squeeze the pipe fitting (1), and the sliding rod (9) is fixedly connected to the piston valve (8); a reset member (10) is provided between the sliding rod (9) and the positioning column (5) for pushing the sliding rod (9) to separate from the positioning column (5); S3, the end of the pipe fitting (1) is extruded twice, and the pipe fitting (1) forms a first package (3) and a second package (4) on both sides of the part (2), respectively, and the part (2) is clamped between the first package (3) and the second package (4); in step S3, the extrusion stroke of the sliding rod (9) is accurately controlled; after the end of the pipe fitting (1) is extruded for the first time, the stroke of the sliding rod (9) is compensated, and then the second extrusion operation is performed.

2. The processing technology of the double-headed recliner for a car seat according to claim 1 is characterized in that: The reset element (10) is a compression spring; A connecting rod (11) is provided between the piston valve (8) and the sliding rod (9), and the reset member (10) is sleeved on the connecting rod (11).

3. A double-head angle adjuster processing device for automobile seats, characterized in that: A processing technology for a double-headed recliner for a car seat according to claim 2, comprising a body (12), a clamp (13) being arranged on the body (12), and extrusion devices being arranged at both ends of the clamp (13); The extrusion device comprises a truncated head (14) slidably connected to the body (12); the truncated head (14) is elastically slidably connected to an outer sleeve (15) at a side surface close to the clamp (13); an inner sleeve (16) is fixed inside the outer sleeve (15); one end of the inner sleeve (16) is slidably connected to the truncated head (14); a positioning column (5) is slidably connected inside the inner sleeve (16); a positioning groove (17) for placing a part (2) is provided at one end of the outer sleeve (15) close to the clamp (13); a clamping groove (18) for clamping the pipe (1) is provided on the clamp (13); the cross section of the clamping groove (18) is set to be semicircular; a first annular groove (19) is provided on one end of the clamp (13) close to the outer sleeve (15); and a second annular groove (20) is provided on one end of the inner sleeve (16) close to the clamp (13); The inner sleeve (16) is also provided with a piston valve (8), a sliding rod (9), a reset member (10) and a connecting rod (11); The heading head (14) is also provided with a top block (21) for pushing the sliding rod (9) to slide.

4. The double-headed recliner processing device for a car seat according to claim 3, characterized in that: The top block (21) is lifted and arranged on the heading head (14), and a protrusion (22) for compensating the sliding distance of the sliding rod (9) is arranged on the side of the top block (21) facing the sliding rod (9).

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