CN114210845B

CN114210845B - Edge folding mechanism

Info

Publication number: CN114210845B
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: 2023-12-22
Anticipated expiration: 2041-12-17
Also published as: CN114210845A

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; the folding assembly is used for folding the door and window frames of the vehicle; the primary overturning assembly is used for driving the flanging assembly to perform pre-flanging on the outer plate; the second-stage overturning assembly is used for driving the flanging assembly to carry out final flanging on the outer plate; the folding assembly and the secondary overturning assembly are connected into a whole, and when the primary overturning assembly drives the folding assembly to move, the secondary overturning assembly can rotate together with the folding assembly; when the second-level overturning assembly drives the flanging assembly to move, the flanging assembly can rotate relative to the first-level overturning assembly. Therefore, by adopting two-stage overturning, a continuous flanging process is realized, the structure is compact, the flanging quality is improved, and the flanging device is suitable for flanging treatment of smaller positions of gaps of 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 flanging mechanism for automobile door flanging is mainly a roller flanging machine, and a roller and a to-be-hemmed frame of the automobile door are in point contact or line contact, however, for flanging sheet metal parts with smaller gaps such as automobile door and window frames, the roller flanging machine cannot effectively hem the parts with smaller gaps. The door window frame comprises an inner plate and an outer plate, and the outer plate needs to be folded and wrapped on the inner plate. 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 a flanging mechanism capable of flanging smaller parts of a door window frame gap of a vehicle is urgently needed at present.

Disclosure of Invention

The invention aims to overcome the defects and shortcomings in the prior art, and provides a flanging mechanism which can be used for flanging smaller parts of a door and window frame gap and adopts twice flanging, namely pre-flanging and final flanging, so that the flanging quality is improved.

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

the folding assembly is used for folding the door and window frames of the vehicle;

the primary overturning assembly is used for driving the flanging assembly to perform pre-flanging on the outer plate; and

the second-stage overturning assembly is used for driving the flanging assembly to carry out final flanging on the outer plate;

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

Further, 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 rotationally connected with the shell through a primary rotating shaft; the air rod on the air cylinder A drives the primary rotating arm to rotate; the primary rotating arm is rotationally connected with the flanging component.

Further, a connecting rod is hinged between the air rod on the air cylinder A and the primary 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 the 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, the second-level overturning assembly comprises a supporting seat, an air cylinder B is hinged to the supporting seat, a swing arm is hinged to the end portion of the air cylinder B, and the swing arm is fixedly connected with the flanging assembly.

Further, the flanging assembly comprises a pressing block arranged on a secondary rotating arm, and the secondary rotating arm is rotationally connected with the primary 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 of the vehicle.

Further, the bottom of the pressing block is a plane, and the front end of the plane is provided with a vertical plane; when the outer plate is pre-folded, the vertical surface is in contact with the outer plate; the planar surface is in contact with the outer panel when the outer panel is finished folded.

Further, a right-angle connecting block is fixedly connected to the top of the primary rotating arm, and the connecting block is rotationally connected with the secondary rotating arm through a secondary rotating shaft.

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

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

Further, an adjusting gasket is arranged between the limiting block 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: the two-stage overturning flanging mechanism is adopted, the primary overturning assembly adopts the air cylinder A and the primary rotating arm, the crank connecting rod mechanism is utilized to ensure that the requirement of the pre-flanging force is met, the secondary overturning assembly adopts the air cylinder B and the swinging arm, the lever principle is utilized to realize large compacting force, and flanging compaction is ensured. The two-stage overturning realizes a continuous flanging process, has a compact structure, improves flanging quality, and is suitable for flanging treatment of smaller parts of gaps of door and window frames of vehicles.

Drawings

Fig. 1 is a schematic structural view of the present invention.

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

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

FIG. 4 is a state diagram of the pre-hemming and final hemming of an outer panel in accordance with the present invention.

Wherein: 1. a hemming assembly; 2. a connecting block; 3. a secondary rotating shaft; 4. a first-stage overturning assembly; 5. a secondary overturning assembly; 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. swing arms; 52. a cylinder B; 53. a support base; 54. a limiting block; 55. adjusting the gasket; 111. a plane; 112. and (5) a vertical plane.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

Examples

Referring to fig. 1 to 4, the present invention provides a hemming mechanism, which includes a hemming assembly 1, a primary overturning assembly 4 and a secondary overturning assembly 5; the folding assembly 1 is used for folding a door window frame of a vehicle; the primary overturning assembly 4 is used for driving the flanging assembly 1 to perform pre-flanging on the outer plate; the secondary overturning assembly 5 is used for driving the flanging assembly 1 to carry out final flanging on the outer plate; the edge folding assembly 1 and the secondary edge folding assembly 4 are connected into a whole, and when the primary edge folding assembly 4 drives the edge folding assembly 1 to move, the secondary edge folding assembly 4 can rotate together with the edge folding assembly 1; when the second-stage overturning assembly 5 drives the flanging assembly 1 to move, the flanging assembly 1 can rotate relative to the first-stage overturning assembly 4.

As one embodiment of the invention, the primary overturning assembly 4 comprises a cylinder A44, wherein the top of the cylinder A44 is connected with a shell 43, a primary rotating arm 41 is arranged on the shell 43, and the primary rotating arm 41 is rotatably connected with the shell 43 through a primary rotating shaft 42; the air rod on the air cylinder A44 drives the primary rotating arm 41 to rotate; the primary rotating arm 41 is rotatably connected with the hemming assembly 1.

Preferably, as shown in fig. 2, a connecting rod 45 is hinged between the air rod on the air cylinder A44 and the primary 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 the 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.

As an embodiment of the present invention, based on the above-mentioned primary overturning assembly 4, the secondary overturning assembly 5 includes a supporting seat 53, a cylinder B52 is hinged on the supporting seat 53, a swing arm 51 is hinged at the end of the air rod on the cylinder B52, and the swing arm 51 is fixedly connected with the hemming assembly 1.

As an embodiment of the present invention, based on the above-mentioned secondary overturning 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 with a primary rotating arm 41; the secondary rotating arm 13 is fixedly connected with the swing arm 51; the pressing block 11 is used for flanging the door and window frames of the vehicle.

Preferably, the pressing block 11 is fixed to the secondary 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 plane 112; when the outer panel is pre-hemmed, the vertical face 112 is in contact with the outer panel; when the outer panel is finished folded, the plane 111 is in contact with the outer panel.

Preferably, a right-angle connecting block 2 is fixedly connected to the top of the primary rotating arm 41, and the connecting block 2 is rotatably connected with the secondary rotating arm 13 through the secondary rotating shaft 3.

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

from the above table, it is clear that the angle of alpha and beta is 82 DEG or more and 88 DEG or less, the angle of alpha is 57 DEG or more and 68 DEG or less and the angle of beta is 20 DEG or more and 25 deg or less.

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

Preferably, an adjusting pad 55 is disposed between the limiting block 54 and the supporting seat 53, and the number of adjusting pads 55 is at least 1.

The housing 43 and the support 53 are mounted on the respective work platform before use of the present invention.

The application process of the invention is as follows:

process one: and adjusting the angle of the pre-folded edge.

The door and window frames of the required vehicle type are placed, then the test run is carried out, the swing arm 51 is blocked by the limiting block 54, 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-flanging angle alpha is reduced. If the limiting block 54 is insufficient to adjust the pre-hemming angle alpha, the adjustment or fine adjustment can be performed by adding the adjusting washer 55. The thickness of the shim 55 here may be 0.5mm.

And a second process: and (5) pre-flanging.

After the pre-flanging angle 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 primary rotating arm 41 to rotate, and the primary rotating arm 41 drives the flanging component 1 to approach to the outer plate of the door and window frame. The gas lever, the connecting rod 45, the bearing 46, the slide groove 47 and the primary rotary arm 41 on the cylinder a44 constitute 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 has the greatest force on the outer plate. As shown in fig. 2, in the dead point position of the crank link mechanism, the presser 11 performs the pre-hemming of the outer panel by the pre-hemming angle α, and the vertical surface 112 on the presser 11 contacts the outer panel.

And a third process: and (5) final flanging.

In the second process, the secondary turning assembly 4 can rotate together with the hemming assembly 1. When the pre-flanging is finished, the position of the primary overturning assembly 4 is unchanged, and 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 flat surface 111 on the press block 11 contacts the outer plate and then the outer plate is firmly wrapped around the inner plate, and the flat surface 111 is parallel to the inner plate.

The second and third processes described above can be illustrated with reference to fig. 2, in which the two-dot chain line indicates the initial state to the pre-hemmed state, and the solid line indicates the final hemmed state.

The present invention may be summarized in other specific forms without departing from the spirit or essential characteristics thereof. 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 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 folding assembly (1) is used for folding the door and window frames of the vehicle;

the primary overturning assembly (4) is used for driving the flanging assembly (1) to perform pre-flanging on the outer plate; and

the second-stage overturning assembly (5) is used for driving the flanging assembly (1) to carry out final flanging on the outer plate;

the folding assembly (1) is connected with the secondary overturning assembly (4) into a whole, and when the primary overturning assembly (4) drives the folding assembly (1) to move, the secondary overturning assembly (4) can rotate together with the 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);

the secondary overturning assembly (5) comprises a supporting seat (53), a cylinder B (52) is hinged to the supporting seat (53), a swing arm (51) is hinged to the end portion of a gas rod on the cylinder B (52), and the swing arm (51) is fixedly connected with the flanging assembly (1);

the primary overturning assembly (4) comprises an air cylinder A (44), the top of the air cylinder A (44) is connected with a shell (43), a primary rotating arm (41) is arranged on the shell (43), and the primary rotating arm (41) is rotationally connected with the shell (43) through a primary rotating shaft (42); the air rod on the air cylinder A (44) drives the primary rotating arm (41) to rotate; the primary rotating arm (41) is rotationally connected with the flanging assembly (1);

a connecting rod (45) is hinged between the air rod on the air cylinder A (44) and the primary rotating arm (41), bearings (46) are arranged on two sides of the connecting rod (45), a sliding groove (47) is formed in the inner wall of the shell (43), and the outer diameter of the bearings (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).

2. The hemming mechanism according to claim 1, wherein the hemming assembly (1) includes a press block (11) provided on a secondary rotating arm (13), the secondary rotating arm (13) being rotatably connected with the primary rotating 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 of the vehicle.

3. The flanging mechanism according to claim 2, characterized in that the bottom of the press block (11) is a plane (111), and the front end of the plane (111) is provided with a vertical plane (112); the vertical face (112) is in contact with the outer panel when the outer panel is pre-hemmed; the plane (111) is in contact with the outer panel when the outer panel is finished folded.

4. The flanging mechanism according to claim 2, characterized in that the top of the primary rotating arm (41) is fixedly connected with a right-angle connecting block (2), and the connecting block (2) is rotatably connected with the secondary rotating arm (13) through a secondary rotating shaft (3).

5. A hemming mechanism according to claim 1 wherein the pre-hemming angle is α and the final hemming angle is β,82 ° or less α+β or less 88 °,57 ° or less α or less 68 °,20 ° or less β or less 25 °.

6. The flanging mechanism according to claim 1, characterized in that a stopper (54) is provided on the supporting seat (53), the stopper (54) being used for blocking the swing arm (51) and adjusting the value of α.

7. The flanging mechanism according to claim 6, characterized in that an adjusting washer (55) is provided between the limiting block (54) and the supporting seat (53), the number of adjusting washers (55) being at least 1.