CN114210845A

CN114210845A - Edge folding mechanism

Info

Publication number: CN114210845A
Application number: CN202111554128.9A
Authority: CN
Inventors: 杨立; 闫利霞; 李晓萍; 公强国; 何颖章; 丛红颖; 徐亚岐; 张祥
Original assignee: Yantai Dayuan Automation Technology Co ltd
Current assignee: Yantai Dayuan Automation Technology Co ltd
Priority date: 2021-12-17
Filing date: 2021-12-17
Publication date: 2022-03-22
Anticipated expiration: 2041-12-17
Also published as: CN114210845B

Abstract

The invention relates to the technical field of automobile welding, in particular to a flanging mechanism, which comprises a flanging assembly, a primary overturning assembly and a secondary overturning assembly, wherein the flanging assembly comprises a first-stage flange and a second-stage flange; the folding assembly is used for folding the door and window frames; the first-stage overturning assembly is used for driving the flanging assembly to pre-hem the outer plate; the secondary turnover assembly is used for driving the edge folding assembly to carry out final edge folding on the outer plate; the edge folding assembly and the secondary overturning assembly are connected into a whole, and when the primary overturning assembly drives the edge folding assembly to move, the secondary overturning assembly can rotate together with the edge folding assembly; when the second-level overturning assembly drives the edge folding assembly to move, the edge folding assembly can rotate relative to the first-level overturning assembly. Therefore, by adopting two-stage turnover, a continuous edge folding process is realized, the structure is compact, the edge folding quality is improved, and the edge folding device is suitable for edge folding treatment of small gaps of the car door and window frames.

Description

Edge folding mechanism

Technical Field

The invention relates to the technical field of vehicle door welding, in particular to a flanging mechanism.

Background

The existing hemming mechanism for vehicle door hemming is mainly a roller type hemming machine, a roller and a vehicle door are in point contact or line contact with a frame to be hemmed, however, the roller type hemming machine cannot effectively hem the smaller part of the gap for hemming the sheet metal part of the smaller part of the gap such as a vehicle door window frame. The door sash includes an inner panel and an outer panel, and the outer panel is folded and wrapped around the inner panel. The pre-flanging force is generally required to be 800-1000N, and the final-flanging force is required to be 1500-1600N, so that the flanging requirement can be met, and therefore, a flanging mechanism capable of performing flanging treatment on a smaller part of a gap of a door and window frame is urgently needed at present.

Disclosure of Invention

The invention aims to overcome the defects and shortcomings in the prior art, and provides the edge folding mechanism which can fold the smaller part of the gap of the car door and window frame and adopts two-time edge folding, namely pre-folding and final folding, so that the edge folding quality is improved.

In order to achieve the above object, the present invention provides a hemming mechanism comprising:

the edge folding assembly is used for folding the door and window frames;

the first-stage overturning assembly is used for driving the edge folding assembly to pre-fold the outer plate; and

the secondary turnover assembly is used for driving the edge folding assembly to carry out final edge folding on the outer plate;

the edge folding assembly and the secondary overturning assembly are connected into a whole, and when the primary overturning assembly drives the edge folding assembly to move, the secondary overturning assembly can rotate along with the edge folding assembly; when the secondary turnover assembly drives the edge folding assembly to move, the edge folding assembly can rotate relative to the primary turnover assembly.

Furthermore, the primary overturning assembly comprises an air cylinder A, the top of the air cylinder A is connected with a shell, a primary rotating arm is arranged on the shell, and the primary rotating arm is rotatably connected with the shell through a primary rotating shaft; the air rod on the air cylinder A drives the first-stage rotating arm to rotate; the first-stage rotating arm is rotatably connected with the flanging assembly.

Furthermore, a connecting rod is hinged between a gas rod on the cylinder A and the first-stage rotating arm, bearings are arranged on two sides of the connecting rod, a sliding groove is formed in the inner wall of the shell, and the outer diameter of each bearing is in rolling fit with the sliding groove; the direction of the sliding groove is parallel to the air rod on the air cylinder A.

Further, second grade upset subassembly includes the supporting seat, it has cylinder B to articulate on the supporting seat, the last gas pole tip of cylinder B articulates there is the swing arm, the swing arm with hem subassembly fixed connection.

Further, the flanging assembly comprises a pressing block arranged on the second-stage rotating arm, and the second-stage rotating arm is rotatably connected with the first-stage rotating arm; the second-stage rotating arm is fixedly connected with the swing arm; the pressing block is used for folding the door and window frames.

Furthermore, the bottom of the pressing block is a plane, and a vertical surface is arranged at the front end of the plane; when the outer plate is pre-flanged, the vertical surface is in contact with the outer plate; the flat surface contacts the outer panel when the outer panel is finally hemmed.

Furthermore, the top of the first-level rotating arm is fixedly connected with a right-angle connecting block, and the connecting block is rotatably connected with the second-level rotating arm through a second-level rotating shaft.

Furthermore, the pre-flanging angle is alpha, the final-flanging angle is beta, the alpha and beta are more than or equal to 82 degrees and less than or equal to 88 degrees, the alpha is more than or equal to 57 degrees and less than or equal to 68 degrees, and the beta is more than or equal to 20 degrees and less than or equal to 25 degrees.

Furthermore, a limiting block is arranged on the supporting seat and used for blocking the swing arm and adjusting the value of alpha.

Furthermore, adjusting gaskets are arranged between the limiting blocks and the supporting seat, and the number of the adjusting gaskets is at least 1.

Compared with the prior art, the invention has the beneficial effects that: a two-stage turnover flanging mechanism is adopted, a cylinder A and a first-stage rotating arm are adopted as a first-stage turnover assembly, the requirement of pre-flanging force is met by utilizing a crank-link mechanism, a cylinder B and a swing arm are adopted as a second-stage turnover assembly, and large pressing force is realized by utilizing a lever principle to ensure flanging compaction. The two-stage turnover realizes a continuous edge folding process, has compact structure, improves the edge folding quality, and is suitable for edge folding treatment of small gaps of the car door and window frames.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of the first-stage flip assembly in fig. 1.

Fig. 3 is a front view of fig. 1.

Fig. 4 is a state view of the outer panel of the present invention in a pre-hemmed and a final-hemmed state.

Wherein: 1. a hemming assembly; 2. connecting blocks; 3. a secondary rotating shaft; 4. a first-stage flip assembly; 5. a secondary overturning component; 11. briquetting; 12. a connecting plate; 13. a second-stage rotating arm; 41. a first-stage rotating arm; 42. a primary rotating shaft; 43. a housing; 44. a cylinder A; 45. a connecting rod; 46. a bearing; 47. a chute; 51. swinging arms; 52. a cylinder B; 53. a supporting seat; 54. a limiting block; 55. adjusting the gasket; 111. a plane; 112. a vertical plane.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

Examples

Referring to fig. 1 to 4, the present invention provides a folding mechanism, which includes a folding assembly 1, a first-stage turnover assembly 4 and a second-stage turnover assembly 5; the flanging assembly 1 is used for flanging a vehicle door and window frame; the primary turnover assembly 4 is used for driving the edge folding assembly 1 to pre-fold the outer plate; the secondary turnover assembly 5 is used for driving the edge folding assembly 1 to carry out final edge folding on the outer plate; the edge folding assembly 1 and the secondary overturning assembly 4 are connected into a whole, and when the primary overturning assembly 4 drives the edge folding assembly 1 to move, the secondary overturning assembly 4 can rotate together with the edge folding assembly 1; when second grade upset subassembly 5 drove hem subassembly 1 motion, hem subassembly 1 can rotate for one-level upset subassembly 4.

As an embodiment of the present invention, the primary turnover assembly 4 includes a cylinder a44, a housing 43 is connected to the top of the cylinder a44, a primary rotating arm 41 is disposed on the housing 43, and the primary rotating arm 41 is rotatably connected to the housing 43 through a primary rotating shaft 42; the air rod on the air cylinder A44 drives the first-stage rotating arm 41 to rotate; first-stage rotating arm 41 is rotatably connected with hemming assembly 1.

Preferably, as shown in fig. 2, a connecting rod 45 is hinged between an air rod on the air cylinder a44 and the first-stage rotating arm 41, bearings 46 are arranged on two sides of the connecting rod 45, a sliding groove 47 is arranged on the inner wall of the housing 43, and the outer diameter of each bearing 46 is in rolling fit with the sliding groove 47; the direction of the sliding groove 47 is parallel to the air rod on the air cylinder A44.

Based on the primary turnover assembly 4, the secondary turnover assembly 5 comprises a supporting seat 53, an air cylinder B52 is hinged on the supporting seat 53, a swing arm 51 is hinged at the end of an air rod on an air cylinder B52, and the swing arm 51 is fixedly connected with the flanging assembly 1.

As an embodiment of the present invention, based on the above-mentioned secondary turning assembly 5, the hemming assembly 1 includes a pressing block 11 disposed on a secondary rotating arm 13, and the secondary rotating arm 13 is rotatably connected to a primary rotating arm 41; the second-stage rotating arm 13 is fixedly connected with the swing arm 51; the pressing block 11 is used for folding the door and window frames.

Preferably, the pressing block 11 is fixed on the second-stage rotating arm 13 through a connecting plate 12.

Preferably, the bottom of the pressing block 11 is a plane 111, and the front end of the plane 111 is provided with a vertical surface 112; when the outer panel is pre-hemmed, the vertical surface 112 contacts the outer panel; when the outer panel is finally hemmed, the flat surface 111 is in contact with the outer panel.

Preferably, a right-angled connecting block 2 is fixedly connected to the top of the first-stage rotating arm 41, and the connecting block 2 is rotatably connected to the second-stage rotating arm 13 through a second-stage rotating shaft 3.

As an embodiment of the present invention, as shown in fig. 4, the pre-flanging angle is α, the final-flanging angle is β, and α and β values required by different vehicle models are different, which is specifically shown in the following table:

as can be seen from the above table, α + β is not less than 82 degrees and not more than 88 degrees, α is not less than 57 degrees and not more than 68 degrees, and β is not less than 20 degrees and not more than 25 degrees.

As an embodiment of the present invention, as shown in fig. 3, a limit block 54 is disposed on the supporting seat 53, and the limit block 54 is used for blocking the swing arm 51 and adjusting the value of α.

Preferably, an adjusting shim 55 is arranged between the limiting block 54 and the supporting seat 53, and the number of the adjusting shims 55 is at least 1.

Before the present invention is used, the housing 43 and the support base 53 are mounted on the corresponding work platform.

The using process of the invention is as follows:

the first process is as follows: and adjusting the angle of the pre-flanging.

The door sash of the required vehicle type is well placed, then the trial operation is carried out, the swing arm 51 is blocked by the limiting block 54, so that the stroke of the air rod on the air cylinder B52 is limited, the rotation angle of the swing arm 51 is reduced, and the corresponding pre-folding angle alpha is reduced. If the stop block 54 is insufficient to adjust the pre-hem angle α, adjustment or fine adjustment can be made by adding the adjustment shim 55. The shim 55 here may be 0.5mm thick.

And a second process: and (6) pre-flanging.

After the pre-folding angle degree alpha is adjusted, the air rod on the air cylinder A44 pushes the connecting rod 45, the connecting rod 45 rolls along the sliding groove 47 under the action of the bearing 46, meanwhile, the connecting rod 45 pushes the first-stage rotating arm 41 to rotate, and the first-stage rotating arm 41 drives the folding assembly 1 to approach to the outer plate of the door window frame. Here, the air rod of the air cylinder a44, the connecting rod 45, the bearing 46, the slide groove 47 and the first-stage rotating arm 41 form a crank-link mechanism, and when the dead point position of the crank-link mechanism is reached, the pressing block 11 in the hemming assembly 1 exerts the largest force on the outer panel. As shown in fig. 2, at the dead point position of the crank link mechanism, the press block 11 performs the pre-hemming at the pre-hemming angle α to the outer panel, and the vertical surface 112 of the press block 11 is in contact with the outer panel.

The third process: and (6) final folding.

In process two, secondary flipping unit 4 can rotate with hemming unit 1. After the pre-flanging is finished, the position of the primary turnover assembly 4 is unchanged, the position of the supporting seat 53 is also unchanged, at the moment, the air rod on the air cylinder B52 pushes the swing arm 51, and the swing arm 51 drives the secondary rotating arm 13 to rotate relative to the primary rotating arm 41, namely the secondary rotating arm 13 rotates on the secondary rotating shaft 3; the plane 111 of the pressing block 11 is contacted with the outer plate, and then the outer plate is firmly wrapped around the inner plate, and the plane 111 is parallel to the inner plate.

The second process and the third process can be seen in fig. 2, wherein the chain double-dashed line represents the state from the initial state to the pre-flanging state, and the solid line represents the final-flanging state.

The present invention may be embodied in other specific forms without departing from its spirit or essential characteristics. The above-described embodiments of the invention are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims, and not by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

1. A hemming mechanism, comprising:

the edge folding assembly (1) is used for folding the door and window frames of the vehicle;

the primary turnover assembly (4) is used for driving the edge folding assembly (1) to pre-fold the outer plate; and

the secondary turnover assembly (5) is used for driving the edge folding assembly (1) to carry out final edge folding on the outer plate;

the edge folding assembly (1) and the secondary overturning assembly (4) are connected into a whole, and when the edge folding assembly (1) is driven by the primary overturning assembly (4) to move, the secondary overturning assembly (4) can rotate along with the edge folding assembly (1); when the secondary overturning assembly (5) drives the flanging assembly (1) to move, the flanging assembly (1) can rotate relative to the primary overturning assembly (4).

2. The flanging mechanism according to claim 1, characterized in that the primary turnover assembly (4) comprises a cylinder A (44), a housing (43) is connected to the top of the cylinder A (44), a primary rotating arm (41) is arranged on the housing (43), and the primary rotating arm (41) is rotatably connected with the housing (43) through a primary rotating shaft (42); the air rod on the air cylinder A (44) drives the first-stage rotating arm (41) to rotate; the first-stage rotating arm (41) is rotatably connected with the flanging assembly (1).

3. The flanging mechanism according to claim 2, characterized in that a connecting rod (45) is hinged between an air rod on the air cylinder A (44) and the first-stage rotating arm (41), bearings (46) are arranged on two sides of the connecting rod (45), a sliding groove (47) is arranged on the inner wall of the shell (43), and the outer diameter of each bearing (46) is in rolling fit with the sliding groove (47); the direction of the sliding groove (47) is parallel to the air rod on the air cylinder A (44).

4. A hemming mechanism according to claim 2 or 3 wherein the secondary turning assembly (5) comprises a support base (53), a cylinder B (52) is hinged to the support base (53), a swing arm (51) is hinged to an end of a gas rod of the cylinder B (52), and the swing arm (51) is fixedly connected to the hemming assembly (1).

5. A hemming mechanism according to claim 4 characterised in that the hemming assembly (1) comprises a pressing block (11) arranged on a secondary swivel arm (13), the secondary swivel arm (13) being rotatably connected to the primary swivel arm (41); the secondary rotating arm (13) is fixedly connected with the swing arm (51); the pressing block (11) is used for folding the door and window frames.

6. The hemming mechanism according to claim 5 wherein the bottom of the press block (11) is a plane (111), and a vertical surface (112) is arranged at the front end of the plane (111); the vertical face (112) is in contact with the outer panel when the outer panel is pre-hemmed; the flat surface (111) is in contact with the outer panel when the outer panel is finally hemmed.

7. A folding mechanism as claimed in claim 5, characterized in that a right-angled connecting block (2) is fixedly connected to the top of the primary rotating arm (41), and the connecting block (2) is rotatably connected to the secondary rotating arm (13) through a secondary rotating shaft (3).

8. The hemming mechanism of claim 6 wherein the pre-hemming angle is α and the final hemming angle is β, 82 ° ≦ α + β ≦ 88 °, 57 ° ≦ α ≦ 68 °, 20 ° ≦ β ≦ 25 °.

9. A hemming mechanism according to claim 8 wherein a stop block (54) is provided on the support base (53), the stop block (54) being adapted to block the swing arm (51) and adjust the value of α.

10. A creasing mechanism according to claim 9, characterised in that an adjusting shim (55) is arranged between the stop block (54) and the support base (53), the number of adjusting shims (55) being at least 1.