Automatic edge rolling device for automobile body door cover metal plate

Abstract

The invention relates to an automobile body door cover metal plate automatic edge rolling device which comprises a clamp used for fixing an automobile door plate, an edge rolling mechanism and a multi-axis mechanical arm used for carrying the edge rolling mechanism, the edge rolling mechanism comprises a base and a plurality of roller heads arranged on the periphery of the base, and an edge pressing mechanism and a locking mechanism are arranged below the base. By arranging the edge pressing mechanism with the adjustable angle, when the edge rolling mechanism rolls edges, the edge pressing mechanism can adapt to the angle of the automobile door outer plate according to the current angle and conduct parallel forward pushing, so that the automobile door outer plate is attached to the automobile door inner plate in the rolling process, the automobile door outer plate is prevented from protruding due to stress in front of rolling, and the service life of the automobile door outer plate is prolonged. When each roller head is used for rolling and rolling at any angle, the edge pressing roller can be in parallel contact with the automobile door outer plate, extremely high angle compatibility is achieved, rolling is adopted in the rolling process, the pressed edge and the roller edge do not generate relative friction, and the automobile door plate cannot be damaged.

Description

Technical Field

[0001] The invention belongs to the field of automobile processing, and in particular relates to an automatic edge rolling device for a door cover sheet of an automobile body. Background Art

[0002] When processing automobile door cover sheets, the blanks are usually stamped to form the door inner panel and the door outer panel, and then the door inner panel and the door outer panel are assembled. Usually, the metal components of the car are fixed by welding, but in order to make the door look neat and beautiful, the inner and outer panels are usually connected by edging. The outer panel is gradually rolled by a roller device until it is flipped 180° and wrapped around the inner door panel.

[0003] The existing door cover rolling device generally uses a mechanical arm to carry a roller head for rolling. Generally, the roller head has multiple angles. The mechanical arm drives one of the roller heads to perform the first rolling. The first rolling is divided into multiple times, and the angle is deepened each time. After the angle is rolled to a certain degree, a roller head with another angle is replaced for the second rolling until the edge of the door outer panel is flipped 180°. When rolling, the mechanical arm needs to drive the roller head to press down and then roll horizontally. This process easily causes stress on the door outer panel and does not fit the door inner panel. It is necessary to apply a force to push the door outer panel toward the door inner panel during rolling. Usually, a flange is set on the edge of the roller head to apply the thrust. However, there is sliding friction between the flange and the door outer panel, which is easy to damage the door outer panel during the rolling process, causing problems such as rust in the later stage. Summary of the invention

[0004] The purpose of the present invention is to provide an automatic rolling device for automobile body door cover sheet members in order to solve the above-mentioned problems.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0006] An automatic rolling device for a door cover sheet of an automobile body comprises a clamp for fixing the door panel, a rolling mechanism, and a multi-axis mechanical arm for carrying the rolling mechanism, wherein the rolling mechanism comprises a base and a plurality of roller heads arranged around the base, wherein a pressing mechanism and a locking mechanism are arranged below the base;

[0007] The edge pressing mechanism includes a rotating seat, and a edge pressing roller is extended outward from one side of the rotating seat, wherein the shaft of the edge pressing roller is hingedly connected to a hinge seat extending from the side of the rotating seat through a bushing, so that the angle of the edge pressing roller has adjustment space, and an arc track is also provided on the rotating seat, which is slidably arranged with the arc portion extending from the shaft, wherein the locking mechanism is used to lock the rotating seat and the arc portion.

[0008] As a further preferred embodiment, the fixture includes a base and a fixed mold for placing a door outer panel and a door inner panel, the fixed mold is provided with a plurality of positioning parts and clamping parts, the clamping parts are used to limit and clamp the door panel, the fixture for the door outer panel and the door inner panel is the prior art, by setting a plurality of automatically operated clamping parts, the door inner panel and the door outer panel placed on the fixed mold are positioned and clamped, so as to facilitate rolling.

[0009] As a further preferred embodiment, the base is provided with at least a first roller head for pre-rolling, a second roller head for secondary rolling, and a third roller head for final rolling. Since the angle range of rolling is large, roller heads with various angles are required to facilitate the robot arm to adjust the posture, wherein the rolling range of each roller head can be set as needed, for example, the rolling range of the first roller head is 0-60°, the rolling range of the second roller head is 45-120°, and the rolling range of the third roller head is 90-180°. In each interval, the roller head performs rolling for multiple times, and the small-range angle adjustment of each rolling is provided by the multi-axis robot arm.

[0010] As a further preferred embodiment, the angle of the roller head is inclined with respect to the side surface of the base, and the inclined roller head allows the multi-axis robot arm to extend obliquely from the side when carrying the roller edge mechanism.

[0011] As a further preferred embodiment, the rotating seat is set at the center of the lower surface of the base through the rotation of the shaft, and a counterweight block is provided at the end of the rotating seat away from the edge pressing roller. The counterweight block is used to rotate the rotating seat until the edge pressing roller is at the highest point when the shaft is not vertical. By setting the counterweight block, the rotating seat always keeps the edge pressing roller at the highest point. At this time, the edge pressing roller is directly below the roller head to be used, and the shaft of the edge pressing roller can be parallel to the vehicle door outer panel after rotation, and can roll along the vehicle door outer panel.

[0012] As a further preferred embodiment, the arc track is closed at one end and open at the other end, and the arc portion enters from the opening. An elastic member is also provided at the closed end of the arc track to make the arc portion have a tendency to retract into the arc track. Before each rolling operation of the roller head, it is necessary to adjust the angle of the edge pressing roller to make it parallel to the outer panel of the door. For the convenience of adjustment, the present embodiment uses an elastic member to make the arc portion have a tendency to retract, that is, the angle can be adjusted by the contact between the edge pressing roller and the outer panel of the door, and the elastic member can be a tension spring.

[0013] As a further preferred embodiment, the locking mechanism includes a plurality of telescopic cylinders arranged in the base, and a limiting cylinder is arranged at the output end of the telescopic cylinder, wherein a limiting column corresponding to the limiting cylinder is arranged on the surface of the rotating seat, and the limiting cylinder locks the rotating seat after docking with the limiting column. The limiting column is hollow and a hydraulic force column is also arranged thereon. The hydraulic force column presses the arc portion through a transmission device. Since the edge roller needs to press the outer panel of the door during rolling, the rotating seat and the arc portion need to be fixed. In this scheme, the limiting cylinder is arranged by multiple telescopic cylinders. At each angle, the telescopic cylinder aligned with the limiting column is pressed down to limit the rotation of the rotating seat. Further, the downward pressure is continued to allow the hydraulic force column to transmit pressure to press the arc portion.

[0014] As a further preferred embodiment, the transmission device includes a hydraulic cylinder, a hydraulic piston and a hydraulic arm arranged on a rotating seat, wherein the hydraulic cylinder is connected to a hydraulic force column through a hydraulic pipe, and an arc-shaped clamping plate is arranged at the end of the hydraulic arm. The side opening of the arc track allows the hydraulic arm to enter, and the clamping plate is located in the arc track for clamping the arc portion. This scheme specifically proposes a method for clamping the arc portion, by which the hydraulic arm extends into the arc track and clamps the arc portion from the side to achieve a fixing effect.

[0015] As a further preferred solution, a friction surface is provided on the inner contact surface between the arc portion and the arc track.

[0016] As a further preferred solution, diagonal bracing reinforcement ribs are provided between the side surface of the hydraulic arm and the clamping plate.

[0017] The present invention has the following beneficial effects:

[0018] The present invention provides an angle-adjustable edge pressing mechanism, so that when the roller edge mechanism is rolling, the edge pressing mechanism can adapt to the angle of the vehicle door outer panel according to the current angle and push forward in parallel, so that the vehicle door outer panel is attached to the vehicle door inner panel during the rolling process, and the vehicle door outer panel is prevented from bulging due to stress in front of the rolling. When each roller head is rolling and when rolling at any angle, the edge pressing roller can be in parallel contact with the vehicle door outer panel, with extremely high angle compatibility, and the rolling process is all rolling, and there is no relative friction between the edge pressing and the rolling, so the vehicle door panel will not be damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 It is a schematic diagram of the roller edge mechanism of the present invention.

[0021] Figure 3 The present invention Figure 2 Center AA view.

[0022] Figure 4 The present invention Figure 2 Middle BB view.

[0023] Figure 5 The present invention Figure 4 Center CC view.

[0024] Figure 6 The present invention Figure 1 Schematic diagram of the multi-axis robotic arm operation.

[0025] Figure 7 The first roller head of the present invention is a schematic diagram of rolling Figure 1 .

[0026] Figure 8 The first roller head of the present invention is a schematic diagram of rolling Figure 2 .

[0027] Fig. 9 It is a schematic diagram of rolling of the first roller head of the present invention.

[0028] Fig.10 It is a schematic diagram of rolling of the third roller head of the present invention.

[0029] In the figure: 1. multi-axis robot arm; 2. fixture; 21. base; 22. fixed mold; 23. positioning part; 24. clamping part; 3. roller edge mechanism; 31. base; 32. first roller head; 33. second roller head; 34. third roller head; 3401. fixed shaft; 3402. roller sleeve; 3403. auxiliary roller; 4. edge pressing mechanism; 41. shaft; 42. rotating seat; 43. counterweight; 44. arc track; 45 , articulated seat; 46, bushing; 47, edge pressing roller; 48, shaft; 49, arc-shaped portion; 410, friction surface; 411, elastic member; 5, locking mechanism; 51, telescopic cylinder; 52, limiting cylinder; 53, limiting column; 54, hydraulic force column; 55, hydraulic pipe; 56, hydraulic cylinder; 57, hydraulic piston; 58, hydraulic arm; 59, reinforcing rib; 510, clamping plate; 61, door outer panel; 62, door inner panel. DETAILED DESCRIPTION

[0030] The present application is further described in detail below in conjunction with the accompanying drawings. It should be noted that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0031] Example

[0032] like Figure 1-5As shown, an automatic rolling device for a door cover sheet of an automobile body includes a fixture 2 for fixing the door panel, a rolling mechanism 3, and a multi-axis mechanical arm 1 for carrying the rolling mechanism 3. The rolling mechanism 3 includes a base 31 and a plurality of roller heads arranged around the base 31, wherein a pressing mechanism 4 and a locking mechanism 5 are arranged below the base 31;

[0033] The edge pressing mechanism 4 includes a rotating seat 42, and a edge pressing roller 47 is extended outward from one side of the rotating seat 42, wherein the shaft 48 of the edge pressing roller 47 is hingedly connected to the hinge seat 45 extending from the side of the rotating seat 42 through a shaft sleeve 46, so that the angle of the edge pressing roller 47 has adjustment space, and an arc track 44 is also provided on the rotating seat 42, which is slidably arranged with the arc portion 49 extending from the shaft portion 48, wherein the locking mechanism 5 is used to lock the rotating seat 42 and the arc portion 49.

[0034] This scheme sets an angle-adjustable edge pressing mechanism 4 so that when the rolling mechanism 3 is rolling, the edge pressing mechanism 4 can adapt to the angle of the door outer panel 61 according to the current angle and push forward in parallel, so that the door outer panel 61 is attached to the door inner panel 62 during the rolling process, preventing the door outer panel 61 from bulging due to stress in front of the rolling. When each roller head is rolling and when rolling at any angle, the edge pressing roller 47 can be in parallel contact with the door outer panel 61, with extremely high angle compatibility, and the rolling process is all rolling, and there is no relative friction between the edge pressing and the rolling, so the door panel will not be damaged.

[0035] The fixture 2 includes a base 21 and a fixed mold 22 for placing a door outer panel 61 and a door inner panel 62. The fixed mold 22 is provided with a plurality of positioning parts 23 and a clamping part 24. The clamping part 24 is used to limit and clamp the door panel. The fixture 2 for the door outer panel 61 and the door inner panel 62 is a prior art. By providing a plurality of automatically operated clamping parts 24, the door inner panel 62 and the door outer panel 61 placed on the fixed mold 22 are positioned and clamped for easy rolling.

[0036] At least a first roller head 32 for pre-rolling, a second roller head 33 for secondary rolling, and a third roller head 34 for final rolling are provided on the base 31. Since the angle range of rolling is large, roller heads with various angles are required to facilitate the robot arm to adjust the posture. The rolling range of each roller head can be set as needed. For example, in this embodiment, the rolling range of the first roller head 32 is 0-60°, the rolling range of the second roller head 33 is 45-120°, and the rolling range of the third roller head 34 is 90-180°. In each interval, the roller head performs rolling for multiple times, and the small-range angle adjustment of each rolling is provided by the multi-axis robot arm.

[0037] The angle of the roller head is inclined with respect to the side surface of the base 31. By means of the inclined roller head, the multi-axis robot arm 1 can extend obliquely from the side when carrying the roller edge mechanism, such as Figure 6 As shown, the specific degree of the tilt angle can be set as needed.

[0038] The rotating seat 42 is rotatably arranged at the center of the lower surface of the base 31 through the shaft 41, and a counterweight 43 is arranged at one end of the rotating seat 42 away from the edge pressing roller 47. The counterweight 43 is used to rotate the rotating seat 42 until the edge pressing roller 47 is at the highest point when the shaft 41 is not vertical. By arranging the counterweight 43, the rotating seat 42 always keeps the edge pressing roller at the highest point. At this time, the edge pressing roller 47 is directly below the roller head to be used. Figure 6 As shown, at this time, the first roller head 32 is ready for use, and the base 31 is tilted to lift the first roller head 32. Due to the gravity of the counterweight block 43, the edge pressing roller 47 is located directly below the first roller head 32, and the shaft 48 of the edge pressing roller 47 can be parallel to the door outer panel 61 after rotation, and can roll along the door outer panel 61.

[0039] The arc track 44 is closed at one end and open at the other end, and the arc portion 49 enters from the opening. The closed end of the arc track 44 is also provided with an elastic member 411, which is used to make the arc portion 49 have a tendency to retract into the arc track 44. Before each rolling operation of the roller head, it is necessary to adjust the angle of the edge pressing roller 47 so that it is parallel to the door outer panel 61. In order to facilitate adjustment, the present solution uses the elastic member 411 to make the arc portion 49 have a tendency to retract, that is, the angle can be adjusted by the edge pressing roller 47 contacting the door outer panel 61. The elastic member 411 can be a tension spring, as shown in FIG. Figure 2 as well as Figure 7 As shown, Figure 2 In this state, the multi-axis robot arm 1 moves parallel to the right side, and when the edge pressing roller 47 contacts the door outer panel 61 , the edge pressing roller 47 rotates with the shaft sleeve 46 .

[0040] The locking mechanism 5 includes a plurality of telescopic cylinders 51 arranged in the base 31, and a limiting cylinder 52 is arranged at the output end of the telescopic cylinder 51, wherein a limiting column 53 corresponding to the limiting cylinder 52 is arranged on the surface of the rotating seat 42, and the limiting cylinder 52 locks the rotating seat 42 after docking with the limiting column 53. The limiting column 53 is hollow, and a hydraulic force column 54 is also arranged on it. The hydraulic force column 54 presses the arc portion 49 through a transmission device. Since the edge pressing roller 47 is required to press the door outer panel 61 during rolling, the rotating seat 47 needs to be fixed and the arc portion 49 is fixed. In this scheme, the limiting cylinder 52 is set by multiple telescopic cylinders 51 (not fully shown in the figure). At each angle, the telescopic cylinder 51 aligned with the limiting column 53 is pressed down to limit the rotation of the rotating seat 42. Further, the downward pressure is continued to cause the hydraulic force column 54 to transmit pressure to press the arc portion 49.

[0041] Specifically, the transmission device includes a hydraulic cylinder 56, a hydraulic piston 57 and a hydraulic arm 58 arranged on the rotating seat 42, wherein the hydraulic cylinder 56 is connected to the hydraulic force column 54 through a hydraulic pipe 55, and an arc-shaped clamping piece 510 is arranged at the end of the hydraulic arm 58. The side of the arc track 44 is open, so that the hydraulic arm 58 can enter, and the clamping piece 510 is located in the arc track 44, and is used to press the arc portion 49. The inner contact surface of the arc portion 49 and the arc track 44 is provided with a friction surface 410. A diagonal bracing reinforcement rib 59 is arranged between the side surface of the hydraulic arm 58 and the clamping piece 510.

[0042] The specific implementation method is as follows: Figure 6-10 As shown, during the first rolling, the angle of the multi-axis robot arm 1 is first adjusted so that the rolling mechanism 3 is as shown in FIG. Figure 7 As shown, at this time, the angle between the base 31 and the vertical axis is a1, which is preset and adjusted by the multi-axis robot 1. Before rolling, the edge pressing mechanism 4 needs to be adjusted. First, the base 31 is translated toward the door outer panel 61 at this angle, so that the edge pressing roller 47 is parallel to the door outer panel 61, as shown in FIG. Figure 7 As shown, the rotating seat 42 and the arc-shaped portion 49 are locked by the locking mechanism 5, and then the multi-axis robot arm 1 starts the first rolling. In this embodiment, the angle range of the first rolling is 0-60° as an example, and can also be pre-set according to the thickness of the plate. The first rolling is performed in multiple times, and the angle of the base 31 is different during each rolling. After the base 31 is adjusted to an angle a2, as shown in FIG. Figure 8 As shown, the edge pressing roller 47 is adjusted again to be parallel to the door outer panel 61, and then the same is repeated until the roller is pressed to 60°;

[0043] After the first rolling is completed, the second roller head 33 is switched. Fig. 9 As shown, the first rolling operation is repeated, and the door outer panel 61 is rolled to 120 degrees one by one using the second roller head 33;

[0044] After the second rolling is completed, the third roller head 34 is switched. The third roller head 34 is different from the first and second roller heads. Figure 3 and Fig.10 As shown, a fixed shaft 3401 is extended, a roller sleeve 3402 is rotatably provided on the fixed shaft 3401, and an auxiliary roller 3403 is extended downward from the fixed shaft 3401. At this time, the edge pressing roller 47 is not required, and the final rolling is completed by the roller sleeve 3402 and the auxiliary roller 3403.

[0045] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof shall not be construed as limiting the scope of the present invention. For those skilled in the art, several modifications and improvements may be made, which shall all fall within the protection scope of the present invention.

Claims

1. An automatic rolling device for a door cover sheet of an automobile body, comprising a clamp (2) for fixing the door panel, a rolling mechanism (3), and a multi-axis mechanical arm (1) for carrying the rolling mechanism (3), characterized in that: The edge rolling mechanism (3) comprises a base (31) and a plurality of roller heads arranged around the base (31), wherein an edge pressing mechanism (4) and a locking mechanism (5) are arranged below the base (31); The edge pressing mechanism (4) comprises a rotating seat (42), and a edge pressing roller (47) is extended outwardly from one side of the rotating seat (42), wherein the shaft portion (48) of the edge pressing roller (47) is hingedly connected to a hinge seat (45) extending from the side of the rotating seat (42) through a shaft sleeve (46), so that the angle of the edge pressing roller (47) has adjustment space, and an arc track (44) is also provided on the rotating seat (42), which is slidably arranged with the arc portion (49) extending from the shaft portion (48), wherein the locking mechanism (5) is used to lock the rotating seat (42) and the arc portion (49).

2. The automatic rolling device for automobile body door cover sheet according to claim 1, characterized in that: The clamp (2) comprises a base (21), a fixed mold (22) for placing a vehicle door outer panel (61) and a vehicle door inner panel (62), and the fixed mold (22) is provided with a plurality of positioning parts (23) and a clamping part (24), and the clamping part (24) is used to limit and clamp the vehicle door panel.

3. The automatic rolling device for automobile body door cover sheet according to claim 1, characterized in that: The base (31) is provided with at least a first roller head (32) for pre-rolling, a second roller head (33) for secondary rolling, and a third roller head (34) for final rolling.

4. The automatic rolling device for automobile body door cover sheet according to claim 1, characterized in that: The angle of the roller head is inclined with respect to the side surface of the base (31).

5. The automatic rolling device for automobile body door cover sheet according to claim 4, characterized in that: The rotating seat (42) is rotatably arranged at the center of the lower surface of the base (31) through the shaft (41), and a counterweight (43) is arranged at one end of the rotating seat (42) away from the edge pressing roller (47). The counterweight (43) is used to rotate the rotating seat (42) until the edge pressing roller (47) is at the highest point when the shaft (41) is not vertical.

6. The automatic rolling device for automobile body door cover sheet according to claim 1, characterized in that: The arc track (44) is closed at one end and open at the other end, and the arc portion (49) enters from the opening. An elastic member (411) is also provided at the closed end of the arc track (44) to allow the arc portion (49) to have a tendency to retract into the arc track (44).

7. The automatic rolling device for automobile body door cover sheet according to claim 6, characterized in that: The locking mechanism (5) comprises a plurality of telescopic cylinders (51) arranged in a base (31), wherein a limiting cylinder (52) is arranged at the output end of the telescopic cylinder (51), wherein a limiting column (53) corresponding to the limiting cylinder (52) is arranged on the surface of the rotating seat (42), and the limiting cylinder (52) locks the rotating seat (42) after docking with the limiting column (53), and the limiting column (53) is hollow and a hydraulic force column (54) is also arranged on it, and the hydraulic force column (54) presses the arc portion (49) through a transmission device.

8. The automatic rolling device for automobile body door cover sheet according to claim 7, characterized in that: The transmission device comprises a hydraulic cylinder (56), a hydraulic piston (57) and a hydraulic arm (58) arranged on a rotating seat (42), wherein the hydraulic cylinder (56) is connected to a hydraulic force-bearing column (54) through a hydraulic pipe (55), and an arc-shaped clamping piece (510) is arranged at the end of the hydraulic arm (58), and the side opening of the arc track (44) allows the hydraulic arm (58) to enter, and the clamping piece (510) is located in the arc track (44) and is used to press the arc portion (49).

9. The automatic rolling device for automobile body door cover sheet according to claim 8, characterized in that: The inner contact surface between the arc-shaped portion (49) and the arc-shaped track (44) is provided with a friction surface (410).

10. The automatic rolling device for automobile body door cover sheet according to claim 8, characterized in that: A diagonal bracing reinforcement rib (59) is provided between the side surface of the hydraulic arm (58) and the clamping sheet (510).

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