Automobile seat backrest framework bending mechanism

Abstract

The utility model relates to the technical field of automobile seat part machining, in particular to an automobile seat backrest framework bending mechanism which comprises a fixed shaft, a rotating shaft arranged outside the fixed shaft, an abutting upper die, an abutting lower die, an abutting lower die and an abutting lower die. The abutting upper die is installed at the side end of the profiling base. The lower abutting die is also installed at the side end of the profiling die base, a framework penetrating gap is formed between the lower abutting die and the upper abutting die, and the framework penetrating gap corresponds to the feeding direction of the automobile seat backrest framework; during use, the rotating shaft is rotated to drive the pressing die base at the end to rotate synchronously, the pressing die base rotates to drive the bending roller to rotate synchronously, the bending roller is matched with the abutting grooves in the upper abutting die and the lower abutting die to jointly complete bending of the automobile seat backrest framework, and even if the size of a material is relatively long during bending operation, the pressing die base can rotate synchronously to drive the pressing die base to rotate synchronously. And the bending precision can still be ensured.

Description

Technical Field

[0001] This utility model relates to the field of automotive seat component processing technology, and in particular to an automotive seat back frame bending mechanism. Background Technology

[0002] To ensure the required shape and size of the car seat back frame, it needs to be precisely bent. The existing bending machine operation process usually involves first placing the seat back frame on the workbench, fixing one end with a clamp, and then feeding it segment by segment into the bending area through the feed head of the bending machine and bending it precisely according to the size and angle.

[0003] For example, Chinese patent application number CN201922063436.6 discloses a bending device for the end of steel wire in a car foam backrest support, including a machine frame. The machine frame has a wire feeding device and a wire outlet hole in its middle. The wire outlet side of the machine frame has at least two slides, a movable block that can move up and down, and an elastic lever. Its design is reasonable, practical, and convenient, eliminating the need for manual removal of the bent steel wire from the machine. However, it is only suitable for bending shorter backrest components. For the relatively long steel wire frame of a car seat backrest, even if bending is done from both sides, a rigid collision will occur after bending a portion, thus affecting the bending accuracy. Utility Model Content

[0004] In view of this, the purpose of this utility model is to propose a bending mechanism for the car seat back frame, so as to solve the technical problem that the existing technology can only be used for bending back components with a shorter size. For the relatively long car seat back steel wire frame, even if it is bent from both sides, a rigid collision will occur after bending a part, which will affect the bending accuracy.

[0005] To achieve the above objectives, this utility model provides a bending mechanism for an automotive seat back frame, including a fixed shaft and a rotating shaft disposed outside the fixed shaft. A template seat is mounted on the fixed shaft, and a pressing mold seat is mounted on the rotating shaft. The bending mechanism for the automotive seat back frame further includes:

[0006] The upper mold is abutted against, and the upper mold is installed on the side end of the mold base;

[0007] The lower abutment mold is also installed on the side of the back mold base. There is a skeleton through gap between the lower abutment mold and the upper abutment mold. The skeleton through gap corresponds to the material feeding direction of the car seat back frame. Both sides of the upper abutment mold and the lower abutment mold are provided with abutment grooves.

[0008] A bending roller, which is detachably mounted on the side end of the die holder;

[0009] An adjustment section for adjusting the distance by which the bending roller extends out of the die holder.

[0010] Furthermore, the adjustment unit includes:

[0011] A pin is provided on the die holder with an axially circumferential insertion hole, and the pin is inserted into the insertion hole. The bending roller is detachably installed on the end of the pin.

[0012] The positioning groove is formed on the pin shaft, and the positioning hole is radially circumferentially provided on the mold base. The positioning hole extends to the insertion hole, and the positioning groove is abutted in the positioning hole by a bolt.

[0013] Furthermore, the outer edge of the bending roller has an arc-shaped concave structure, and the bending roller corresponds to the abutment groove.

[0014] Furthermore, the abutting grooves on both sides of the upper mold and the lower mold are all arc segments.

[0015] Furthermore, the diameters of the arc segments of the abutment grooves on both sides differ by 5mm.

[0016] Furthermore, the spacing of the through gaps in the frame is not less than the diameter of the car seat back frame to be bent.

[0017] Furthermore, both the template base and the pressure mold base are detachably mounted on the fixed shaft and the rotating shaft by bolts.

[0018] Furthermore, both the upper and lower abutting molds are provided with overflow grooves, and there are several overflow grooves, the bottoms of which are all inclined.

[0019] The beneficial effects of this utility model are as follows: When using the car seat back frame bending mechanism of this utility model, the end pressure mold seat is rotated synchronously by rotating the rotating shaft. The rotation of the pressure mold seat will drive the bending roller to rotate synchronously. The bending roller cooperates with the abutting grooves on the upper mold and the lower mold respectively to complete the bending of the car seat back frame. Even if the material size is relatively long, the bending accuracy can still be guaranteed during the bending operation. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the assembly of the fixed shaft and the rotating shaft in this utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the template base in this utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the pressure mold base of this utility model;

[0025] Figure 5 This is a structural schematic diagram of the pressure mold base of this utility model from another perspective;

[0026] Figure 6 This is a schematic diagram of the pin shaft in this utility model.

[0027] The diagram is marked as follows:

[0028] 1. Fixed shaft; 2. Rotating shaft; 3. Mold base; 4. Pressing mold base; 5. Upper mold abutting; 6. Lower mold abutting; 7. Abutting groove; 8. Bending roller; 9. Pin shaft; 10. Insertion hole; 11. Positioning groove; 12. Positioning hole; 13. Overflow groove. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0030] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0031] The first aspect of this utility model proposes a bending mechanism for the frame of an automotive seat back, such as... Figure 1-6 As shown, the mechanism includes a fixed shaft 1 and a rotating shaft 2 located outside the fixed shaft 1. A template base 3 is mounted on the fixed shaft 1, and a pressing mold base 4 is mounted on the rotating shaft 2. The bending mechanism for the car seat back frame also includes:

[0032] It abuts against the upper mold 5, which is installed on the side of the mold base 3;

[0033] The lower mold 6 is also installed on the side of the mold base 3. The lower mold 6 and the upper mold 5 are connected by a skeleton through gap. The skeleton through gap corresponds to the material feeding direction of the car seat back skeleton. Both sides of the upper mold 5 and the lower mold 6 are provided with abutment grooves 7.

[0034] Bending roller 8 is detachably installed on the side of the die holder 4;

[0035] An adjustment section for adjusting the distance by which the bending roller 8 extends from the die holder 4.

[0036] In this embodiment, the adjustment unit includes:

[0037] The pin 9 is axially provided with a hole 10 on the die holder 4, and the pin 9 is inserted into the hole 10. The bending roller 8 is detachably installed on the end of the pin 9.

[0038] The positioning groove 11 is formed on the pin 9. The positioning hole 12 is radially circumferentially provided on the mold base 4. The positioning hole 12 extends to the insertion hole 10. The positioning groove 11 is pressed against the positioning hole 12 by bolts.

[0039] Working process and principle: Before use, according to the model of the car seat back frame to be bent, the appropriate back mold seat 3 is selected and installed on the fixed shaft 1, and the pressure mold seat 4 is installed on the rotating shaft 2. Then, by adjusting the positioning and installation position of the pin 9 in the insertion hole 10, the bending roller 8 is aligned with the abutting groove 7 on the upper mold 5 and the lower mold 6.

[0040] In this embodiment, the material is fed segment by segment and angle by angle into the gap between the upper die 5 and the lower die 6 according to the material feeding direction of the equipment and the size requirements. The end pressure mold seat 4 is driven to rotate synchronously by rotating the rotating shaft 2. The rotation of the pressure mold seat 4 will drive the bending roller 8 to rotate synchronously, while the mold seat 3 at the end of the fixed shaft 1 remains stationary.

[0041] When the car seat backrest frame needs to be bent upwards, the pressing mold base 4 is rotated clockwise, and the bending roller 8 cooperates with the abutting groove 7 on the upper mold 5 to complete the bending of the car seat backrest frame. When the car seat backrest frame needs to be bent downwards, the pressing mold base 4 is rotated counterclockwise, and the bending roller 8 cooperates with the abutting groove 7 on the lower mold 6 to complete the bending of the car seat backrest frame.

[0042] In this embodiment, as Figure 1As shown, the outer edge of the bending roller 8 has an arc-shaped concave structure, and the bending roller 8 corresponds to the abutment groove 7. The bending roller 8 with an arc-shaped concave structure on its outer edge can provide a certain limiting effect on the car seat back frame during the bending process, and the surface at the bending point is smoother.

[0043] In this embodiment, as Figure 1 , Figure 3 As shown, the abutting grooves 7 on both sides of the upper mold 5 and the lower mold 6 are all arc segments. The diameter of the arc segments of the abutting grooves 7 on both sides differs by 5mm. The installation orientation of the mold base 3 on the fixed axis 1 can be adjusted as needed so that one mold base 3 can adapt to two specifications of bending radius, making it more versatile.

[0044] In this embodiment, as Figure 3 As shown, the spacing of the through gap of the skeleton is not less than the diameter of the car seat back skeleton to be bent, so that the car seat back skeleton can be fed smoothly within the through gap of the skeleton, avoiding excessive clamping and damage to the surface of the car seat back skeleton.

[0045] In this embodiment, as Figure 1 , Figure 2 As shown, both the template base 3 and the pressure mold base 4 are detachably installed on the fixed shaft 1 and the rotating shaft 2 by bolts, which facilitates disassembly, assembly, inspection and maintenance.

[0046] In this embodiment, as Figure 1 , Figure 3 As shown, overflow grooves 13 are provided on both the upper mold 5 and the lower mold 6. There are several overflow grooves 13, and the bottom of each overflow groove 13 is inclined. During the bending process, lubricating oil can be sprayed into the gap through the frame at any time to ensure bending accuracy and surface quality of the car seat back frame.

[0047] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0048] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A folding mechanism of a backrest frame of a car seat, comprising a fixed shaft (1) and a rotating shaft (2) arranged outside the fixed shaft (1), characterized in that, The fixed shaft (1) is provided with a back mold base (3), the rotating shaft (2) is provided with a pressing mold base (4), and the automobile seat backrest framework bending mechanism further comprises: An upper abutting die (5) is installed on the side end of the back mold base (3); A lower abutting die (6) is also installed on the side end of the back mold base (3), and a framework through gap is formed between the upper abutting die (5) and the lower abutting die (6), which corresponds to the incoming direction of the automobile seat backrest framework. The two sides of the upper abutting die (5) and the lower abutting die (6) are provided with abutting grooves (7); A bending roller (8) is detachably installed on the side end of the pressing mold base (4); An adjusting part is used to adjust the protruding distance of the bending roller (8) on the pressing mold base (4).

2. The folding mechanism according to claim 1, wherein The adjusting part comprises: A pin shaft (9) is inserted into the insertion hole (10) on the pressing mold base (4), and the bending roller (8) is detachably installed on the end of the pin shaft (9); A positioning groove (11) is formed on the pin shaft (9), and a positioning hole (12) is radially arranged around the pressing mold base (4), which extends to the insertion hole (10), and the positioning hole (12) is tightly abutted with the positioning groove (11) through a bolt.

3. The folding mechanism according to claim 2, wherein The outer edge of the bending roller (8) is an arc concave structure, and the bending roller (8) corresponds to the abutting groove (7).

4. The folding mechanism according to claim 1, wherein The abutting grooves (7) on both sides of the upper abutting die (5) and the lower abutting die (6) are circular arc segments.

5. The folding mechanism according to claim 4, wherein The diameters of the circular arc segments of the abutting grooves (7) on both sides are different by 5mm.

6. The folding mechanism of claim 1, wherein: The spacing of the framework through gap is not less than the diameter of the automobile seat backrest framework to be bent.

7. The folding mechanism of claim 1, wherein the folding mechanism is a seatback folding mechanism of a vehicle seat. The back mold base (3) and the pressing mold base (4) are detachably installed on the fixed shaft (1) and the rotating shaft (2) through bolts.

8. The folding mechanism of claim 1, wherein: The upper abutting die (5) and the lower abutting die (6) are provided with overflow grooves (13), and the bottom of each overflow groove (13) is inclined.

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