An integrated processing device for punching and bending automotive seat frames

Abstract

This invention relates to the field of automotive seat frame processing technology, and more particularly to an integrated punching and bending processing device for automotive seat frames. It includes a frame, a pipe clamping and positioning mechanism, a bending mechanism, a rotary punching mechanism, an internal support mechanism, and a hole shape switching mechanism. A pipe clamping drive is mounted on the frame. The pipe clamping and positioning mechanism, bending mechanism, rotary punching mechanism, and internal support mechanism are all mounted on the frame, and the hole shape switching mechanism is assembled on the rotary punching mechanism. The rotary punching mechanism is located at the corresponding workstation of the pipe bending cutting point. This invention, through the rotary punching mechanism and fixed workstation setup, enables the rotary punch to complete the punching action using a rotary progressive cutting method, replacing the traditional direct punching hard impact mode, achieving a processing effect of no chipping at the hole opening, no burrs, and no pipe wall collapse.

Description

Technical Field

[0001] This invention relates to the field of automotive seat frame processing technology, and in particular to an integrated processing device for punching and bending automotive seat frames. Background Technology

[0002] Automotive seat frames are widely made from round tubes, requiring bending and punching during manufacturing to meet assembly requirements. Current technology often employs a step-by-step process of punching first, followed by bending, which limits the placement of holes to the bending area and restricts structural design.

[0003] Existing punching devices mostly use a direct punching method, which easily causes pipe wall collapse, hole cracking, and large burrs. Ordinary equipment can only process a single hole type, and mold changing is time-consuming and labor-intensive. At the same time, the secondary clamping and positioning error of the split process is large. During the bending process, the formed hole position is easily pulled by the subsequent bending deformation, resulting in hole position distortion. Overall, there are obvious shortcomings in processing accuracy, efficiency, and versatility. Summary of the Invention

[0004] To overcome the shortcomings of direct punching, such as easy collapse of pipe wall, cracking of hole opening and large burrs, large clamping and positioning errors in the separate punching and bending process, and easy distortion of formed hole position by bending and pulling, this invention provides an integrated processing device for punching and bending of automobile seat frame.

[0005] The technical solution is as follows: A punching and bending integrated processing device for automotive seat frames includes a frame, a pipe clamping and positioning mechanism, a bending mechanism, a rotary punching mechanism, an internal support mechanism, and a hole type switching mechanism. A pipe clamping drive is mounted on the frame. The pipe clamping and positioning mechanism, the bending mechanism, the rotary punching mechanism, and the internal support mechanism are all mounted on the frame. The hole type switching mechanism is mounted on the rotary punching mechanism. The bending mechanism is used to perform bending operations on the pipe to be processed. The rotary punching mechanism is fixedly set at the corresponding workstation of the pipe bending tangent point to simultaneously complete the punching operation during the pipe bending process. The internal support mechanism is used to support the punching position. The hole type switching mechanism is used to quickly switch between punches of different hole types.

[0006] Preferably, the bending mechanism includes a bending drive component, which is fixedly connected to the frame. The bending drive component is rotatably connected to a bending rotating spindle, and a bending swing arm is fixedly connected to the bending rotating spindle. A bending template is slidably connected to the shaft end of the bending swing arm, and an arc groove adapted to the pipe to be processed is provided on one side of the bending template.

[0007] Preferably, the rotary punching mechanism includes a punching mounting base, which is rotatably connected to the frame and is set to correspond to the bending point of the pipe fitting. A rotary punching drive is slidably connected to the punching mounting base, and a rotary punching punch head is detachably connected to the output end of the rotary punching drive.

[0008] Preferably, the tube support mechanism includes a core feeding drive, which is slidably connected to the frame. A core rod is fixedly connected to the output end of the core feeding drive, and a support core is coaxially sleeved at the other end of the core rod. The outer wall of the support core fits snugly with the inner wall of the tube to be processed. An avoidance hole corresponding to the rotary punch is opened on the support core, and a flexible bendable section is provided at the end of the support core near the bending mechanism.

[0009] Preferably, the flexible bendable section is composed of several support plate structures, and the support plate structures have at least two evenly distributed clearance holes along the axial direction of the support tube core. Adjacent support plates are connected by a corrugated expansion structure.

[0010] Preferably, the front end of the flexible bendable section is provided with a tapered guide head, the rear end of the support core is provided with a positioning flange, and an elastic connecting line connects the tapered guide head and the positioning flange, the elastic connecting line passing through the support plate structure of all the flexible bendable sections.

[0011] Preferably, the hole type switching mechanism includes a switching turntable, which is rotatably connected to the punching mounting base. The switching turntable has a plurality of spare punches evenly arranged circumferentially. The spare punches are detachably installed on the switching turntable. The punching mounting base is provided with positioning holes, and the switching turntable is slidably connected to the positioning holes with positioning pins at the corresponding positions.

[0012] Preferably, the pipe clamping and positioning mechanism includes a fixed clamping seat, which is slidably connected to the frame. A movable clamping block is slidably connected to the fixed clamping seat, and a positioning drive is fixedly connected to the movable clamping block. The opposite surfaces of the fixed clamping seat and the movable clamping block are provided with semi-circular clamping grooves that are adapted to the pipe.

[0013] Preferably, the rotary punch has a detachable structure, and the rotary punch is connected to the output end of the rotary punch drive through a quick-release structure, which facilitates the individual replacement of the damaged rotary punch.

[0014] Preferably, the rotary punching mechanism is further provided with a tool retraction assembly, which is linked with the rotary punching drive component and is used to drive the rotary punching head to retract quickly after punching is completed, so as to disengage from the pipe wall.

[0015] The beneficial effects of the present invention are: the present invention uses a rotary punching mechanism in conjunction with a fixed station setting to enable the rotary punch to complete the punching action in a rotary progressive cutting manner, replacing the traditional direct punching hard impact mode, and achieving a processing effect of no cracking at the hole, no burrs, and no collapse of the pipe wall. Through the internal support mechanism and flexible bendable section structure, the support core extends into the pipe and deforms synchronously with the bending, forming an inner rigid support action at the punching position, thereby achieving stable positioning in the punching area and preventing the hole from being distorted by subsequent bending. By integrating the bending mechanism and the rotary punching mechanism, the bending and punching actions of the pipe fittings can be completed simultaneously after one clamping, eliminating the positioning error caused by the secondary clamping of the separate processes, and achieving higher processing accuracy, simpler processes, and higher production efficiency. By using a hole type switching mechanism and a detachable rotary punch structure, the punch can be quickly replaced and the multi-hole type can be freely switched, eliminating the need for frequent mold disassembly and assembly and repeated debugging steps, thus achieving the effect of stronger device versatility, faster mold change and wider application range. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is a three-dimensional structural cross-sectional view of part of the present invention.

[0018] Figure 3 This is a three-dimensional cross-sectional view of the bending mechanism and the rotary punching mechanism of the present invention.

[0019] Figure 4 This is a three-dimensional cross-sectional view of the tube support mechanism of the present invention.

[0020] Figure 5 This is a three-dimensional cross-sectional view of the flexible bendable segment of the present invention.

[0021] Figure 6 This is a three-dimensional cross-sectional view of the hole type switching mechanism of the present invention.

[0022] Figure 7 This is a three-dimensional structural diagram of the rotary punching mechanism of the present invention.

[0023] Explanation of reference numerals in the attached drawings: 1_Frame, 101_Pipe clamping drive, 2_Pipe clamping and positioning mechanism, 201_Fixed clamp, 202_Modible clamp, 203_Positioning drive, 3_Bending mechanism, 301_Bending drive, 302_Bending rotary spindle, 303_Bending swing arm, 304_Bending template, 4_Spinning punching mechanism, 401_Punching mounting base, 402_Spinning punching drive, 403_Spinning punch, 5_Inner tube support mechanism, 501_Core feed drive, 502_Core rod, 503_Support core, 504_Flexible bendable section, 505_Conical guide head, 506_Elastic connecting line, 6_Hole type switching mechanism, 601_Switching turntable, 602_Positioning pin, 603_Spare punch, 7_Retracting tool assembly. Detailed Implementation

[0024] The following description is only a preferred embodiment of the present invention and does not limit the scope of protection of the present invention. Example 1

[0025] An integrated processing device for punching and bending automotive seat frames, such as Figure 1-7 As shown, the system includes a frame 1, a pipe clamping and positioning mechanism 2, a bending mechanism 3, a rotary punching mechanism 4, an internal support mechanism 5, and a hole type switching mechanism 6. A pipe clamping drive 101 is mounted on the frame 1 for fixing and moving the pipe. The pipe clamping and positioning mechanism 2, bending mechanism 3, rotary punching mechanism 4, and internal support mechanism 5 are all mounted on the frame 1. The hole type switching mechanism 6 is mounted on the rotary punching mechanism 4. The bending mechanism 3 is used to bend the pipe to be processed. The rotary punching mechanism 4 is located at the corresponding workstation of the bending point of the pipe and is used to simultaneously complete the punching operation during the bending process. The internal support mechanism 5 is used to support the punching position of the pipe to be processed. The hole type switching mechanism 6 is used to quickly switch between punches of different hole types. The rotary punching mechanism 4 is also equipped with a retraction assembly 7, which is linked with the rotary punching drive 402 to drive the rotary punching head 403 to quickly retract and detach from the pipe wall after punching is completed.

[0026] like Figure 2 and Figure 3 As shown, the bending mechanism 3 includes a bending drive 301 fixed to the frame 1. The bending drive 301 is rotatably connected to a bending rotating spindle 302. A bending swing arm 303 is fixed to the bending rotating spindle 302. A bending template 304 is slidably connected to the shaft end of the bending swing arm 303. An arc groove adapted to the tube to be processed is opened on one side of the bending template 304. The bending swing arm 303 drives the bending template 304 to rotate, thereby driving the tube to bend and form around the bending tangent point.

[0027] like Figure 3 , Figure 6 and Figure 7As shown, the rotary punching mechanism 4 includes a punching mounting base 401 rotatably connected to the frame 1. The punching mounting base 401 is set corresponding to the bending cutting point of the pipe fitting. A rotary punching drive 402 is slidably connected to the punching mounting base 401. A rotary punching punch 403 is detachably connected to the output end of the rotary punching drive 402. By driving the rotary punching punch 402, the punching operation is completed synchronously during the bending process of the pipe fitting in a rotary progressive cutting manner, so as to avoid the hole position from deforming during the subsequent bending and pulling process. The rotary punching punch 403 is a detachable structure. The rotary punching punch 403 and the output end of the rotary punching drive 402 are connected by a quick-release structure, which makes it easy to replace the damaged rotary punching punch 403 separately.

[0028] like Figure 4 and Figure 5 As shown, the tube support mechanism 5 includes a core feed drive 501 slidably connected to the frame 1. A core rod 502 is fixedly connected to the output end of the core feed drive 501. A support core 503 is coaxially sleeved on the other end of the core rod 502. The outer wall of the support core 503 fits snugly against the inner wall of the tube to be processed. The support core 503 has a clearance hole corresponding to the rotary punch 403. By extending the support core 503 into the tube, an inner rigid support is formed at the punching position to prevent the tube wall from collapsing inward and the hole from deforming during punching, ensuring that the hole shape is regular and the hole position accuracy is stable. A flexible bendable section 5 is provided at the left end of the support core 503. 04. The flexible bendable section 504 is composed of several support plate structures. The support plate structure has at least two evenly distributed clearance holes along the axial direction of the support tube core 503. Adjacent support plates are connected by a corrugated expansion structure. The front end of the flexible bendable section 504 is provided with a tapered guide head 505, and the rear end of the support tube core 503 is provided with a positioning flange. An elastic connecting line 506 connects the tapered guide head 505 and the positioning flange. The elastic connecting line 506 runs through all the support plate structures of the flexible bendable section 504. The flexible bendable section 504 bends and deforms synchronously with the bending of the pipe fitting, always fitting the inner wall of the pipe fitting, and continuously providing inner support for the punching area.

[0029] like Figure 6 As shown, the hole type switching mechanism 6 includes a switching turntable 601 rotatably connected to the punching mounting base 401. Several spare punches 603 are evenly arranged circumferentially on the switching turntable 601. The spare punches 603 are detachably installed on the switching turntable 601. The punching mounting base 401 is provided with positioning holes. Positioning pins 602 are slidably connected to the switching turntable 601 at the corresponding position of the positioning holes. By quickly rotating and switching different hole type punches and locking them in place, the processing and switching of various hole types such as round holes, elliptical holes, and square holes can be completed without disassembling the mold, thereby improving the versatility and changeover efficiency of the device.

[0030] like Figure 2As shown, the pipe clamping and positioning mechanism 2 includes a fixed clamping seat 201 slidably connected to the frame 1, a movable clamping block 202 slidably connected to the fixed clamping seat 201, and a positioning drive component 203 fixedly connected to the movable clamping block 202. The opposite surfaces of the fixed clamping seat 201 and the movable clamping block 202 are provided with semi-circular clamping grooves adapted to the pipe. By clamping and fixing the pipe to be processed and limiting its axial and circumferential directions, the mechanism prevents the pipe from moving or deflecting during processing, thus ensuring the positioning accuracy of bending and punching operations.

[0031] When processing automotive seat frame tubing, the tubing to be processed is first placed on the clamping drive 101, with one end of the tubing extending into the bending die 304 side of the bending mechanism 3, and the inner cavity of the tubing aligned with the support core 503 of the inner tube support mechanism 5. According to the processing requirements, the required punch 403 is selected through the hole type switching mechanism 6, and the switching turntable 601 is rotated until the target punch 403 is coaxially aligned with the punching drive 402. The positioning pin 602 is inserted into the corresponding positioning hole of the punch mounting base 401 and the switching turntable 601 to complete the rapid switching and locking positioning of the punch.

[0032] At the start of processing, the positioning drive 203 drives the movable clamping block 202 to move towards the fixed clamping seat 201. The semi-circular clamping grooves on the opposite sides of the fixed clamping seat 201 and the movable clamping block 202 clamp the outer wall of the pipe fitting, achieving axial and circumferential positioning of the pipe fitting and preventing it from shifting or deflecting during processing. Subsequently, the core feed drive 501 slides along the frame 1 towards the pipe fitting, driving the core rod 502 and the supporting core 503 to extend into the pipe fitting simultaneously, so that the outer wall of the supporting core 503 fits tightly against the inner wall of the pipe fitting being processed. The clearance hole on the supporting core 503 is coaxially aligned with the rotary punch 403, and the flexible bendable section 504 corresponds to the area of ​​the pipe fitting to be bent. The tapered guide head 505 guides the supporting core 503 to smoothly enter the pipe fitting, avoiding scratching the inner wall. The positioning flange and the elastic connecting line 506 keep the supporting plates of the flexible bendable section 504 coaxial and stable.

[0033] After the pipe fitting to be processed is positioned and the internal support is in place, the bending drive 301 is started, which drives the bending rotary spindle 302 to rotate. The bending rotary spindle 302 drives the bending swing arm 303 to swing around the center of the spindle. The bending template 304 at the end of the bending swing arm 303 moves synchronously with the swing arm. The outer wall of the pipe fitting is squeezed through the arc groove of the bending template 304, so that the pipe fitting is gradually bent and deformed along the bending tangent position, thus completing the bending forming action.

[0034] At the moment when the pipe is bent to the preset angle and the rotary punch 403 is precisely aligned with the bending point, the rotary punch drive 402 is activated. The output end of the rotary punch 403 and the rotary punch drive 402 are fixed by a quick-release structure, driving the rotary punch 403 to rotate at high speed and feed radially along the pipe. The rotary progressive cutting method is used to punch the pipe wall. The support core 503 and the support plate form a rigid support inside the pipe, preventing the pipe wall from collapsing inward, the hole from cracking, or wrinkling during the punching process, and ensuring that the hole shape is regular and the hole wall is smooth.

[0035] After punching is completed, the retraction assembly 7 and the rotary punching drive 402 work together to quickly drive the rotary punching head 403 to retract radially, causing the rotary punching head 403 to detach from the tube wall of the fitting. This prevents the punch from pulling the hole position and causing hole shape distortion during subsequent bending. During the continuous bending of the fitting, the flexible bendable section 504 at the front end of the support core 503 bends and deforms synchronously with the fitting. Adjacent support plates adapt to the bending angle through the corrugated telescopic structure. The elastic connecting line 506 keeps each support plate coaxial and stable, so that the flexible bendable section 504 always fits against the inner wall of the fitting, continuously supporting the punching area, isolating the tensile and compressive stress generated by subsequent bending, and preventing the formed hole position from being pulled, deformed, or shifted.

[0036] After all bending and punching operations are completed, the rotary punching drive 402 stops operating, and the retraction assembly 7 drives the rotary punching head 403 to fully reset; the core feed drive 501 slides in the reverse direction, driving the core rod 502 and the supporting core 503 to exit the inner cavity of the tube, and the positioning drive 203 drives the movable clamping block 202 to release the tube. At this time, the processed car seat frame tube is taken out, completing a single processing flow.

[0037] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A punch-bend integrated processing device for an automobile seat framework, characterized in that, The device includes a frame (1), a pipe clamping and positioning mechanism (2), a bending mechanism (3), a rotary punching mechanism (4), an internal support mechanism (5), and a hole type switching mechanism (6). The frame (1) is equipped with a pipe clamping drive (101). The pipe clamping and positioning mechanism (2), the bending mechanism (3), the rotary punching mechanism (4), and the internal support mechanism (5) are all installed on the frame (1). The hole type switching mechanism (6) is assembled on the rotary punching mechanism (4). The bending mechanism (3) is used to bend the pipe to be processed. The rotary punching mechanism (4) is set at the corresponding work position of the pipe bending tangent point and is used to complete the punching operation simultaneously during the pipe bending process. The internal support mechanism (5) is used to support the punching position. The hole type switching mechanism (6) is used to quickly switch punches of different hole types.

2. The punching and bending integrated processing device for an automobile seat framework according to claim 1, characterized in that, The bending mechanism (3) includes a bending drive (301), which is fixedly connected to the frame (1). The bending drive (301) is rotatably connected to a bending rotating spindle (302). A bending swing arm (303) is fixedly connected to the bending rotating spindle (302). A bending template (304) is slidably connected to the shaft end of the bending swing arm (303). An arc groove adapted to the pipe to be processed is opened on one side of the bending template (304).

3. The punching and bending integrated processing device of an automobile seat framework according to claim 2, characterized in that, The rotary punching mechanism (4) includes a punching mounting base (401), which is rotatably connected to the frame (1) and is set at the bending point of the pipe fitting. A rotary punching drive (402) is slidably connected to the punching mounting base (401), and a rotary punching punch (403) is detachably connected to the output end of the rotary punching drive (402).

4. The punching and bending integrated processing device of an automobile seat framework according to claim 3, characterized in that, The tube support mechanism (5) includes a core feed drive (501), which is slidably connected to the frame (1). The output end of the core feed drive (501) is fixedly connected to a core rod (502). The other end of the core rod (502) is coaxially sleeved with a support core (503). The outer wall of the support core (503) fits snugly with the inner wall of the tube to be processed. The support core (503) has a clearance hole corresponding to the rotary punch (403). The end of the support core (503) near the bending mechanism (3) is provided with a flexible bendable section (504).

5. The integrated punching and bending processing device for automobile seat frames according to claim 4, characterized in that, The flexible bendable section (504) is composed of several support plate structures. The support plate structure has at least two evenly distributed clearance holes along the axial direction of the support core (503). Adjacent support plates are connected by a corrugated expansion structure.

6. The integrated punching and bending processing device for automobile seat frames according to claim 5, characterized in that, The front end of the flexible bendable section (504) is provided with a tapered guide head (505), and the rear end of the support tube core (503) is provided with a positioning flange. An elastic connecting line (506) is connected between the tapered guide head (505) and the positioning flange. The elastic connecting line (506) runs through the support plate structure of all the flexible bendable sections (504).

7. The integrated punching and bending processing device for automobile seat frames according to claim 6, characterized in that, The hole type switching mechanism (6) includes a switching turntable (601), which is rotatably connected to the punching mounting base (401). A number of spare punches (603) are evenly arranged on the circumferential direction of the switching turntable (601). The spare punches (603) are detachably installed on the switching turntable (601). The punching mounting base (401) is provided with positioning holes. The switching turntable (601) is slidably connected to the positioning holes with positioning pins (602) at the corresponding positions.

8. The integrated punching and bending processing device for automobile seat frames according to claim 7, characterized in that, The pipe clamping and positioning mechanism (2) includes a fixed clamping seat (201), which is slidably connected to the frame (1). A movable clamping block (202) is slidably connected to the fixed clamping seat (201). A positioning drive (203) is fixedly connected to the movable clamping block (202). The opposite surfaces of the fixed clamping seat (201) and the movable clamping block (202) are provided with semi-circular clamping grooves that are adapted to the pipe.

9. The integrated punching and bending processing device for automobile seat frames according to claim 8, characterized in that, The rotary punch (403) is a detachable structure. The rotary punch (403) is connected to the output end of the rotary punch drive (402) through a quick-release structure, which makes it easy to replace the damaged rotary punch (403) individually.

10. The integrated punching and bending processing device for an automobile seat frame according to claim 9, characterized in that, The rotary punching mechanism (4) is also provided with a retraction component (7), which is linked with the rotary punching drive (402) to drive the rotary punching head (403) to retract quickly after punching is completed and detach from the pipe wall.

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