Right-angle headrest framework bending mechanism

Abstract

The utility model relates to a right-angle headrest framework bending mechanism which comprises a base, a transverse distance adjusting track is arranged on the top wall of the base, two distance adjusting transverse moving platforms are arranged on the transverse distance adjusting track in a sliding mode, a distance adjusting lead screw mechanism is arranged on the base, a distance adjusting lead screw is arranged on the distance adjusting lead screw mechanism, and the distance adjusting lead screw is connected with two distance adjusting lead screw nuts. The two distance-adjusting lead screw nuts are fixedly connected with the two distance-adjusting transverse moving platforms respectively, bending dies are fixedly connected to the top walls of the distance-adjusting transverse moving platforms, the cross section of each bending die is in a fan shape, bending guide grooves are formed in the contact sides of the bending dies, arc-shaped grooves are formed in the top walls of the distance-adjusting transverse moving platforms, and bending motors are fixedly connected to the bottom walls of the distance-adjusting transverse moving platforms. A motor shaft of the bending motor is fixedly connected with a connecting rod. According to the pipe bending die, the curvature radius of the contact portion is small, the pipe bending die can avoid a long-strip-shaped clamping groove in the inner side of the corner of a right-angle headrest framework in the bending process, the long-strip-shaped clamping groove is prevented from being damaged by collision, and therefore the rate of defective products is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of headrest skeleton production, and particularly relates to a right-angle headrest skeleton bending mechanism. Background Art

[0002] The right-angle headrest skeleton is the skeleton of an automobile headrest, and its production quality directly affects the quality of the automobile headrest. The right-angle headrest skeleton is in a U shape, and two vertical rods thereof are inserted into the top of an automobile seat. A plurality of limiting grooves are arranged on both vertical rods, and a limiting block is arranged inside the automobile seat. The limiting block is clamped into the corresponding limiting groove to fix the height position of the right-angle headrest. The right-angle headrest skeleton needs to be bent into a U shape by a bending mechanism.

[0003] See Figure 6 , a long strip-shaped clamping groove 51 is punched on the inner side wall of the right-angle turning of a part of the right-angle headrest skeleton 5. The clamping groove 51 can be used for a plastic part of the headrest main body to be clamped into, so as to ensure the effective connection between the right-angle headrest skeleton and the headrest main body. In the prior art, a cylindrical pipe bending die is adopted by the bending mechanism to form the right-angle headrest skeleton. Since the radius of the bending part of the right-angle headrest skeleton is small, while the curvature radius of the traditional pipe bending die is large, the long strip-shaped clamping groove 51 is easily damaged during the bending process, thereby affecting the subsequent installation link of the right-angle headrest skeleton. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a right-angle headrest skeleton bending mechanism, the curvature radius of the contact part of the pipe bending die thereof is small, and the long strip-shaped clamping groove inside the turning of the right-angle headrest skeleton can be avoided during the bending process, so as to prevent the long strip-shaped clamping groove from being damaged, thereby reducing the defective rate.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A right-angle headrest frame bending mechanism comprises a base, a top wall of the base is provided with a transverse distance-adjusting track, the transverse distance-adjusting track is slidably provided with two distance-adjusting transverse shifting platforms, the base is provided with a distance-adjusting screw mechanism, the distance-adjusting screw mechanism is provided with a distance-adjusting screw, the distance-adjusting screw is connected with two distance-adjusting screw nuts, the two distance-adjusting screw nuts are respectively fixed to the two distance-adjusting transverse shifting platforms, a bending die is fixed to the top wall of the distance-adjusting transverse shifting platform, the cross section of the bending die is fan-shaped, a bending guide groove is provided on the contact side of the bending die, an arc groove is provided on the top wall of the distance-adjusting transverse shifting platform, a bending motor is fixed to the bottom wall of the distance-adjusting transverse shifting platform, a connecting rod is fixed to the motor shaft of the bending motor, and a vertical Rod, the vertical rod passes through the arc groove, the top of the vertical rod is fixedly connected with a bending pipe pressure wheel, the rear side of the adjustable distance transverse moving platform is fixedly connected with a clamping cylinder, the rear side of the adjustable distance transverse moving platform is fixedly connected with a mounting seat, the mounting seat is slidably connected with a material picking transverse slide, the mounting seat is provided with a material picking screw mechanism, the material picking screw mechanism is provided with a material picking screw, the material picking transverse slide is fixedly connected with a material picking screw nut, the material picking screw nut is threadedly connected with the material picking screw, the material picking transverse slide is fixedly connected with a T-shaped bracket, the bottom wall of the T-shaped bracket is fixedly connected with a longitudinal slide rail, the longitudinal slide rail is slidably connected with the longitudinal slide seat, the bottom wall of the longitudinal slide seat is fixedly connected with a vertical cylinder, the piston rod of the vertical cylinder is fixedly connected with a connecting seat, and the connecting seat is provided with two pneumatic clamps.

[0007] Specifically, the cross section of the distance-adjustable transverse platform is in the shape of an inverted U, forming two lower beams, and the transverse distance-adjustable track is slidably connected to a plurality of transverse sliding blocks, and each lower beam is fixedly connected to two transverse sliding blocks.

[0008] Specifically, a mounting plate extending downward is integrally provided on the rear edge of the lower beam on the front side, and the bending motor is mounted on the rear side of the mounting plate.

[0009] Specifically, a mounting hole is provided at the end of the connecting rod, a rolling bearing is installed in the mounting hole, a vertical rod is supported by the rolling bearing, a pipe bending pressure wheel is fixedly connected to the top of the vertical rod, and a circumferential surface of the pipe bending pressure wheel is provided with a contoured arc surface.

[0010] Specifically, a longitudinal cylinder is fixedly connected to the lower side of the T-shaped bracket, and a piston rod of the longitudinal cylinder is fixedly connected to the longitudinal sliding seat.

[0011] Specifically, the connecting seat is provided with a transverse distance-adjusting sliding groove, in which two transverse sliding blocks are slidably provided, and a pneumatic clamping claw is fixedly connected to the front end bottom wall of the transverse sliding block.

[0012] Specifically, both lateral sides of the connecting seat are rotatably connected with distance adjusting screws, and the distance adjusting screws are threadedly connected to the lateral sliding block.

[0013] Specifically, the center angle of the cross-sectional profile of the bending die is 25°-35°.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The inner side wall of the right-angled bend of the right-angled headrest frame formed by the utility model is punched with a long slot, and the plastic part of the headrest body can be inserted into the slot, thereby ensuring the effective connection between the right-angled headrest frame and the headrest body. The cross section of the bending mold of the utility model is fan-shaped, and the center angle of the cross-sectional profile of the bending mold is 25°-35°. The fan-shaped sharp corner of the bending mold is aligned with the right-angled bend (slot) of the right-angled headrest frame. In the process of the bending roller bending the two ends of the straight rod forward, the fan-shaped sharp corner of the bending mold has a small curvature radius, which can avoid the slot, thereby avoiding damage to the slot during the bending process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a three-dimensional view of the right-angle headrest frame bending mechanism of the utility model;

[0018] Figure 2 It is an exploded view of the right-angle headrest frame bending mechanism of the utility model;

[0019] Figure 3 It is a partial view of the right-angle headrest frame bending mechanism of the utility model;

[0020] Figure 4 It is the related structural view of the adjustable transverse platform and the bending motor;

[0021] Figure 5 It is the related structural view of the adjustable transverse platform and the bending motor;

[0022] Figure 6 This is a view of the right-angle headrest frame and the bending mold;

[0023] Figure 7 A view of the reclaiming transverse slide and related structures;

[0024] Figure 8 Another view of the reclaiming transverse slide and related structures.

[0025] In the figure:

[0026] 11. Lateral pitch-adjusting track; 111. Lateral sliding block; 12. Pitch-adjusting lead screw; 13. Pitch-adjusting lead screw nut;

[0027] 21. Adjustable distance and transverse movement platform; 211. Arc groove; 212. Lower beam; 213. Mounting plate; 22. Bending die; 221. Bending guide groove; 23. Pressing cylinder;

[0028] 31. Bending motor; 32. Connecting rod; 321. Rolling bearing; 33. Vertical rod; 34. Bending roller;

[0029] 41. Material retrieving horizontal slide; 42. Material retrieving screw rod; 43. Material retrieving screw nut; 44. T-shaped bracket; 441. Longitudinal cylinder; 45. Longitudinal slide seat; 46. Vertical cylinder; 47. Connecting seat; 471. Horizontal distance adjustment slide slot; 472. Adjustment screw; 48. Pneumatic clamp; 49. Horizontal slide block;

[0030] 5. Right-angle headrest frame; 51. Card slot. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0032] See Figures 1 to 8 A right-angle headrest frame bending mechanism includes a base, a top wall of the base is provided with a transverse distance adjustment track 11, and the transverse distance adjustment track 11 is slidably provided with two distance adjustment transverse shifting platforms 21. The base is provided with a distance adjustment screw mechanism, and the distance adjustment screw mechanism is provided with a distance adjustment screw 12, and the distance adjustment screw 12 is connected with two distance adjustment screw nuts 13, and the two distance adjustment screw nuts 13 are respectively fixed to the two distance adjustment transverse shifting platforms 21.

[0033] The top wall of the adjustable transverse platform 21 is fixedly connected with a bending die 22, the cross section of which is fan-shaped, and the contact side of the bending die 22 is provided with a bending guide groove 221. The top wall of the adjustable transverse platform 21 is provided with an arc groove 211. The bottom wall of the adjustable transverse platform 21 is fixedly connected with a bending motor 31, the motor shaft of the bending motor 31 is fixedly connected with a connecting rod 32, the end of the connecting rod 32 is fixedly connected with a vertical rod 33, and the vertical rod 33 passes through the arc groove 211. The top end of the vertical rod 33 is fixedly connected with a bending pipe pressing wheel 34.

[0034] A clamping cylinder 23 is fixedly connected to the rear side of the pitch-adjustable transverse platform 21. A mounting seat is fixedly connected to the rear side of the pitch-adjustable transverse platform 21, and the mounting seat is slidably connected to a material-collecting transverse slide 41. The mounting seat is provided with a material-collecting screw mechanism, and the material-collecting screw mechanism is provided with a material-collecting screw 42. The material-collecting transverse slide 41 is fixedly connected with a material-collecting screw nut 43, and the material-collecting screw nut 43 is threadedly connected to the material-collecting screw 42.

[0035] The material taking transverse slide 41 is fixedly connected to a T-shaped bracket 44, the bottom wall of the T-shaped bracket 44 is fixedly connected to a longitudinal slide rail (not shown), and the longitudinal slide rail is slidably connected to a longitudinal slide seat 45. The bottom wall of the longitudinal slide seat 45 is fixedly connected to a vertical cylinder 46, and the piston rod of the vertical cylinder 46 is fixedly connected to a connecting seat 47, and the connecting seat 47 is provided with two pneumatic clamps 48.

[0036] Specifically, the cross section of the distance-adjustable transverse platform 21 is in an inverted U-shape, forming two lower beams 212 . The transverse distance-adjustable track 11 is slidably connected to a plurality of transverse sliding blocks 111 , and each lower beam 212 is fixedly connected to two transverse sliding blocks 111 .

[0037] Specifically, a mounting plate 213 extending downward is integrally provided on the rear edge of the front lower beam 212 , and the bending motor 31 is mounted on the rear side of the mounting plate 213 .

[0038] Specifically, a mounting hole is provided at the end of the connecting rod 32, a rolling bearing 321 is installed in the mounting hole, the rolling bearing 321 supports a vertical rod 33, and a bending roller 34 is fixedly connected to the top of the vertical rod 33. The circumferential surface of the bending roller 34 is provided with a contoured arc surface.

[0039] Specifically, a longitudinal cylinder 441 is fixedly connected to the lower side of the T-shaped bracket 44 , and a piston rod of the longitudinal cylinder 441 is fixedly connected to the longitudinal sliding seat 45 .

[0040] Specifically, the connecting seat 47 is provided with a transverse distance-adjusting slide groove 471 , in which two transverse sliding blocks 49 are slidably provided, and a pneumatic clamping jaw 48 is fixedly connected to the front end bottom wall of the transverse sliding block 49 .

[0041] Specifically, both lateral sides of the connecting seat 47 are rotatably connected with distance adjusting screws 472 , and the distance adjusting screws 472 are threadedly connected to the lateral sliding block 49 .

[0042] Specifically, the center angle of the cross-sectional profile of the bending die 22 is 25°-35°.

[0043] The working principle of the right-angle headrest frame bending mechanism of the utility model is as follows:

[0044] According to the distance between the inner sides of the two right-angled bends of the right-angle headrest frame 5 to be formed, the two distance-adjusting transverse platforms 21 are adjusted, thereby adjusting the distance between the two bending dies 22. After the distance adjustment of the two bending dies 22 is completed, the straight rod corresponding to the right-angle headrest frame 5 is placed in the rear side of the bending dies 22, and then the piston rod of the clamping cylinder 23 presses the straight rod against the rear side of the two bending dies 22, thereby clamping the middle section of the straight rod.

[0045] Then, the two bending motors 31 simultaneously drive the two connecting rods 32 to swing, thereby driving the vertical rod 33 and the bending tube pressure wheel 34 to move along the arc groove 211, thereby simultaneously bending the two ends of the straight rod toward the front to form a right-angle headrest frame 5.

[0046] See Figure 6 The inner side wall of the right-angled bend of the right-angled headrest frame 5 formed by the utility model is punched with a long slot 51, and the slot 51 can be inserted into the plastic part of the headrest body, thereby ensuring the effective connection between the right-angled headrest frame and the headrest body. The cross section of the bending mold 22 of the utility model is fan-shaped, and the center angle of the cross-sectional profile of the bending mold 22 is 25°-35°. The fan-shaped sharp corner of the bending mold 22 is aligned with the right-angled bend (slot 51) of the right-angled headrest frame 5. In the process of the bending roller 34 bending the two ends of the straight rod toward the front, due to the small curvature radius of the fan-shaped sharp corner of the bending mold 22, it can avoid the slot 51, thereby avoiding damage to the slot 51 during the bending process.

[0047] After the straight rod is bent into a right-angle headrest frame 5 , two pneumatic clamps 48 clamp the right-angle headrest frame 5 together to realize unloading.

[0048] The above are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A right-angle headrest frame bending mechanism, characterized in that: It includes a base. A transverse distance-adjusting track (11) is provided on the top wall of the base. Two distance-adjusting transverse moving platforms (21) are slidably provided on the transverse distance-adjusting track (11). The base is provided with a distance-adjusting lead screw mechanism. The distance-adjusting lead screw (12) provided in the distance-adjusting lead screw mechanism is connected with two distance-adjusting lead screw nuts (13). The two distance-adjusting lead screw nuts (13) are respectively fixedly connected with the two distance-adjusting transverse moving platforms (21). A bending die (22) is fixedly connected to the top wall of the distance-adjusting transverse moving platform (21). The cross-section of the bending die (22) is fan-shaped. A bending guide groove (221) is provided on the contact side of the bending die (22). An arc-shaped groove (211) is provided on the top wall of the distance-adjusting transverse moving platform (21). A bending motor (31) is fixedly connected to the bottom wall of the distance-adjusting transverse moving platform (21). A connecting rod (32) is fixedly connected to the motor shaft of the bending motor (31). A vertical rod (33) is fixedly connected to the end of the connecting rod (32). The vertical rod (33) passes through the arc-shaped groove (211). A pipe bending pressure wheel (34) is fixedly connected to the top end of the vertical rod (33). A pressing cylinder (23) is fixedly connected to the rear side of the distance-adjusting transverse moving platform (21). A mounting seat is fixedly connected to the rear side of the distance-adjusting transverse moving platform (21). A material-taking transverse sliding table (41) is slidably connected to the mounting seat. The mounting seat is provided with a material-taking lead screw (42) mechanism. The material-taking lead screw (42) mechanism is provided with a material-taking lead screw (42). A material-taking lead screw nut (43) is fixedly connected to the material-taking transverse sliding table (41). The material-taking lead screw nut (43) is in threaded connection with the material-taking lead screw (42). A T-shaped bracket (44) is fixedly connected to the material-taking transverse sliding table (41). A longitudinal sliding rail is fixedly connected to the bottom wall of the T-shaped bracket (44). A longitudinal sliding seat (45) is slidably connected to the longitudinal sliding rail. A vertical cylinder (46) is fixedly connected to the bottom wall of the longitudinal sliding seat (45). A connecting seat (47) is fixedly connected to the piston rod of the vertical cylinder (46). Two pneumatic grippers (48) are provided on the connecting seat (47).

2. The right-angle headrest frame bending mechanism according to claim 1 is characterized in that: The cross-section of the distance-adjusting transverse moving platform (21) is inverted U-shaped, forming two lower beams (212). The transverse distance-adjusting track (11) is slidably connected with a plurality of transverse sliding blocks (111). Two transverse sliding blocks (111) are fixedly connected to each lower beam (212).

3. The right-angle headrest frame bending mechanism according to claim 2 is characterized in that: An installation plate (213) extending downward is integrally provided at the rear side edge of the front lower beam (212). The bending motor (31) is installed at the rear side of the installation plate (213).

4. The right-angle headrest frame bending mechanism according to claim 1 is characterized in that: According to the right-angle headrest skeleton bending mechanism described in claim 1, it is characterized in that: an installation hole is provided at the end of the connecting rod (32). A rolling bearing (321) is installed in the installation hole. The vertical rod (33) is supported by the rolling bearing (321). A pipe bending pressure wheel (34) is fixedly connected to the top end of the vertical rod (33). A profiling arc surface is provided on the circumferential surface of the pipe bending pressure wheel (34).

5. The right-angle headrest frame bending mechanism according to claim 1, characterized in that: A longitudinal cylinder (441) is fixedly connected to the lower side of the T-shaped bracket (44). The piston rod of the longitudinal cylinder (441) is fixedly connected to the longitudinal sliding seat (45).

6. The right-angle headrest frame bending mechanism according to claim 1, characterized in that: The connecting seat (47) is provided with a transverse distance-adjusting chute (471). Two transverse sliding blocks (49) are slidably provided in the transverse distance-adjusting chute (471). The front bottom wall of the transverse sliding block (49) is fixedly connected with the pneumatic gripper (48).

7. The right-angle headrest frame bending mechanism according to claim 6 is characterized in that: The connecting seat (47) is rotatably connected to the two lateral sides thereof with distance adjusting screws (472), and the distance adjusting screws (472) are threadedly connected to the lateral sliding block (49).

8. The right-angle headrest frame bending mechanism according to claim 1 is characterized in that: The center angle of the cross-sectional profile of the bending die (22) is 25°-35°.

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