Curved plate edge wrinkle roll flattening mechanism

Abstract

The curved plate edge wrinkle roll flattening mechanism comprises a vehicle frame, a walking assembly, a mechanical arm and a roll flattening assembly, the mechanical arm is arranged on the vehicle frame, the vehicle frame is arranged at the movable end of the walking assembly, and the roll flattening assembly is arranged at the movable end of the mechanical arm; the roll flattening assembly comprises a roll flattening frame, a plurality of upper rollers and a plurality of lower rollers, the upper rollers and the lower rollers are longitudinally arranged in a staggered mode, and the vertical distance between the upper rollers and the lower rollers is adjustable. The roller flattening mechanism can be used as a supplement of curved plate multi-point forming equipment, and edge wrinkles of a formed curved plate can be rolled and leveled through the roller flattening mechanism, so that the consistency of the forming line type of the curved plate is realized, and the forming precision is improved; by arranging the multiple upper rollers and the multiple lower rollers relative to a single-point stamping shaping mode, continuous walking rolling can be carried out along the edge of the plate, stress concentration is reduced, the molded surface continuity is good after leveling, and the curved surface is smooth.

Description

Technical Field

[0001] The invention relates to the technical field of curved panel processing equipment, and in particular to a curved panel edge wrinkle rolling mechanism. Background Art

[0002] In recent years, multi-point die cold stamping processing has been widely used in the field of curved plate plastic forming. In industries such as shipbuilding, some complex-shaped double-curved plates can be formed into complex surfaces by repeatedly stamping with multi-point dies installed on hydraulic presses. Compared with traditional fixed die stamping, pyrotechnic bending and other methods, it greatly improves production efficiency and reduces labor intensity.

[0003] The multi-point forming mold is composed of clustered discrete square pressure heads, which are arranged in a regular pattern. The height of each pressure head can be adjusted by computer to construct a curved surface of any shape, thereby transforming the overall mold into a flexible mold with variable shape. The multi-point forming mold is generally composed of two sets of upper and lower molds, with the upper and lower molds having the same curved surface but opposite directions. During operation, the lower mold is fixed and the upper mold applies pressure to the plate placed in the middle of the mold under the action of the hydraulic press. Generally, after multiple pressings, the plate is gradually formed into a curved surface.

[0004] During the multi-point mold cold forming process, the internal part of the plate will be stretched and squeezed, generating internal stress. However, due to the complex internal structure of the pressure head of the multi-point forming mold, it cannot bear a large pressure, so the internal stress at the edge of the plate cannot be released, which easily causes wrinkles at the edge of the plate. In view of the above problems, there is an urgent need for a device that can shape the curved plate, thereby eliminating the wrinkles at the edge of the curved plate and improving the overall forming quality of the curved plate. Summary of the invention

[0005] The purpose of the present invention is to provide a curved panel edge wrinkle rolling mechanism to solve one or more technical problems existing in the above-mentioned background technology.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] A curved panel edge wrinkle rolling mechanism comprises a frame, a traveling assembly, a mechanical arm and a rolling assembly, wherein the mechanical arm is arranged on the frame, the frame is arranged on the movable end of the traveling assembly, and the rolling assembly is arranged on the movable end of the mechanical arm; the rolling assembly comprises a rolling frame, a plurality of upper rollers and a plurality of lower rollers, wherein the plurality of upper rollers are horizontally arranged alternately on the rolling frame, the plurality of lower rollers are horizontally arranged alternately on the rolling frame, and the upper rollers and the lower rollers are longitudinally staggered, and the vertical distance between the upper rollers and the lower rollers is adjustable.

[0008] Preferably, the rolling assembly also includes multiple first hydraulic motors and multiple second hydraulic motors, and the multiple first hydraulic motors and multiple second hydraulic motors are all arranged on the rolling frame, and the upper roller and the lower roller are respectively connected to the driving ends of the first hydraulic motor and the second hydraulic motor.

[0009] Preferably, the rolling assembly also includes multiple upper support cylinders and multiple lower support cylinders, and the multiple upper support cylinders and the multiple upper rollers are rotatably arranged on the rolling frame, the upper support cylinders are arranged above the upper rollers and fit with the upper rollers, and the lower support cylinders are arranged below the lower rollers and fit with the upper rollers.

[0010] Preferably, the upper support cylinder and the lower support cylinder are both unpowered cylinders.

[0011] Preferably, the rolling assembly also includes an upper rolling base and a lower rolling base, and the upper rolling base and the lower rolling base are arranged up and down on the rolling frame, and a plurality of upper support cylinders are rotatably arranged on the upper rolling base, and a plurality of lower support cylinders are rotatably arranged on the lower rolling base.

[0012] Preferably, the rolling assembly further comprises a plunger cylinder, and the plunger cylinder is arranged between the lower rolling base and the rolling frame.

[0013] Preferably, the walking assembly includes a walking track, a walking rack, a walking motor and a driving gear. The frame is slidably matched with the walking track. The walking motor is arranged on one side of the frame. The walking rack is arranged parallel to the walking track. The driving gear is arranged at the rotating end of the walking motor, and the driving gear is meshed with the walking rack.

[0014] Preferably, a plurality of running wheels are installed at the bottom of the frame, and the running wheels are slidably matched with the running tracks.

[0015] Preferably, the robotic arm is a five-degree-of-freedom robotic arm.

[0016] The beneficial effects of the present invention are as follows: the rolling mechanism of the present invention can be used as a supplement to the multi-point forming equipment of curved panels, and the rolling mechanism of the present invention can be used to roll and level the wrinkles on the edges of the formed curved panels to achieve the consistency of the forming line of the curved panels and improve the forming accuracy; the curved panels are rolled and corrected by the internal force of the rolling head, and the frame and the mechanical arm do not need to apply rolling pressure, thereby making the overall structure compact and occupying a small space, and can be flexibly arranged around the multi-point forming equipment; by setting a plurality of upper rollers and a plurality of lower rollers relative to the single-point stamping shaping method, continuous walking and rolling can be performed along the edge of the plate to reduce stress concentration, and the surface continuity and smoothness of the curved surface after leveling are good. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings further illustrate the present invention, but the contents in the accompanying drawings do not constitute any limitation to the present invention.

[0018] Figure 1 It is a schematic diagram of the overall structure of one embodiment of the present invention;

[0019] Figure 2 It is a schematic diagram of the overall internal structure of one embodiment of the present invention;

[0020] FIG3( a ) is a schematic diagram of the arrangement of the upper roller and the lower roller in one embodiment of the present invention;

[0021] FIG3( b ) is a cross-sectional view of section AA in FIG3( a );

[0022] FIG4( a ) is a schematic diagram showing the arrangement of a lower roller pressing base and a plunger cylinder in one embodiment of the invention;

[0023] FIG4( b ) is a cross-sectional view of a portion of the cross section at point B in FIG4( a );

[0024] FIG. 4( c ) is a cross-sectional view of the CC section in FIG. 4( b ). DETAILED DESCRIPTION

[0025] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0026] In this embodiment, Figure 1 As shown, a curved panel edge wrinkle rolling flat mechanism comprises a travel track 1, a travel rack 2, a frame 3, a mechanical arm 4 and a rolling flat head 5.

[0027] like Figure 2 As shown, a travel motor 6 is installed on the frame 3, and the travel motor 6 drives the gear 7 to rotate and mesh with the travel rack 2. The frame 3 is installed with four travel wheels 8, which move linearly along the travel track 1 under the driving force. A mechanical arm 4 is installed on the top of the frame 3, and the mechanical arm 4 can perform multi-degree-of-freedom movement (5 degrees of freedom). A rolling frame 9 is installed at the front end of the mechanical arm 4. An upper support cylinder 10a, a lower support cylinder 10b, an upper roller 11a, and a lower roller 11b are installed in the rolling frame 9.

[0028] As shown in Fig. 3(a) and (b), the rolling frame 9 is a rectangular structure, on which an upper rolling base 12 and a lower rolling base 13 are installed. The upper rolling base 12 is fixedly connected to the top of the rolling frame 9, and the lower rolling base 13 can be lifted and lowered in the vertical direction under the action of the plunger cylinder 15, and a normal clamping force is applied to the plate during the rolling operation. Two upper rollers 11a and three upper support cylinders 10a are installed on the upper rolling base 12, and three lower rollers 11b and four lower support cylinders 10b are installed on the lower rolling base 13. The upper roller 11a is not only staggered with the upper support cylinder 11 on the same side, but also longitudinally staggered with the lower roller 11b on the opposite side. The upper roller 11a and the lower roller 11b are driven to rotate by the first hydraulic motor 14a and the second hydraulic motor 14b respectively. Each upper roller 11a is equipped with a first hydraulic motor 14a, and each lower roller 11b is equipped with a second hydraulic motor 14b. The upper support cylinder 10a and the lower support cylinder 10b are both unpowered cylinders. The upper support cylinder 10a and the lower support cylinder 10b rotate under the friction force of the upper roller 11a and the lower roller 11b respectively, providing longitudinal support force for the rollers and improving the stability of the rolling operation.

[0029] As shown in Fig. 4(a), (b) and (c), a plunger cylinder 15 is installed between the lower rolling base 13 and the rolling frame 9, the cylinder body 16 is fixedly connected to the lower rolling base 13, and the piston rod 17 is fixedly connected to the rolling frame 9. The plunger cylinder 15 is connected to the hydraulic system. When pressurized, the piston rod 17 extends downward, and the lower rolling base 13 is pushed upward under the reaction force, so that the upper and lower rows of rollers 13 are squeezed with the curved plate 18. Driven by the hydraulic motor 14, the wrinkles on the edge of the curved plate 18 are rolled and leveled. After the pressure is relieved, the lower rolling base 13 slides to the bottom under the action of the plunger cylinder 15 to increase the opening, so that the upper and lower rows of rollers 13 can be inserted into the edge of the curved plate during the next operation.

[0030] In summary, a curved panel edge wrinkle flattening mechanism of the present embodiment, when working, uses a multi-point mold to press the center position of the curved panel up and down to prevent displacement and deviation, and under the clamping of the robotic arm, the roller flattening head is inserted into the edge wrinkle area of ​​the curved panel, and the upper and lower rollers are driven by the hydraulic system to clamp the curved panel, and with the cooperation of the frame track walking and the movement of the robotic arm, a certain range of continuous rolling and leveling operations are achieved to eliminate edge wrinkles of the cold plastic formed curved panel.

[0031] The technical principle of the present invention is described above in conjunction with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the scope of protection of the present invention in any way. Based on the explanations herein, those skilled in the art can associate other specific implementations of the present invention without paying creative labor, and these methods will fall within the scope of protection of the present invention.

Claims

1. A curved panel edge wrinkle rolling mechanism, characterized in that: It includes a frame, a traveling assembly, a mechanical arm and a rolling assembly, wherein the mechanical arm is arranged on the frame, the frame is arranged on the movable end of the traveling assembly, and the rolling assembly is arranged on the movable end of the mechanical arm; the rolling assembly includes a rolling frame, a plurality of upper rollers and a plurality of lower rollers, a plurality of the upper rollers are horizontally arranged alternately on the rolling frame, a plurality of the lower rollers are horizontally arranged alternately on the rolling frame, and the upper rollers and the lower rollers are longitudinally staggered, and the vertical distance between the upper rollers and the lower rollers is adjustable.

2. A curved panel edge wrinkle rolling mechanism according to claim 1, characterized in that: The rolling assembly also includes multiple first hydraulic motors and multiple second hydraulic motors, and the multiple first hydraulic motors and multiple second hydraulic motors are all arranged on the rolling frame, and the upper roller and the lower roller are respectively connected to the driving ends of the first hydraulic motor and the second hydraulic motor.

3. The curved panel edge wrinkle rolling mechanism according to claim 1, characterized in that: The rolling assembly also includes a plurality of upper support cylinders and a plurality of lower support cylinders. The plurality of upper support cylinders and the plurality of upper rollers are rotatably arranged on the rolling frame. The upper support cylinders are arranged above the upper rollers and fit with the upper rollers, and the lower support cylinders are arranged below the lower rollers and fit with the upper rollers.

4. A curved panel edge wrinkle rolling mechanism according to claim 3, characterized in that: The upper support cylinder and the lower support cylinder are both unpowered cylinders.

5. The curved panel edge wrinkle rolling mechanism according to claim 3, characterized in that: The rolling assembly also includes an upper rolling base and a lower rolling base, which are arranged up and down on the rolling frame, and a plurality of upper support cylinders are rotatably arranged on the upper rolling base, and a plurality of lower support cylinders are rotatably arranged on the lower rolling base.

6. A curved panel edge wrinkle rolling mechanism according to claim 5, characterized in that: The rolling assembly further comprises a plunger cylinder, which is arranged between the lower rolling base and the rolling frame.

7. The curved panel edge wrinkle rolling mechanism according to claim 1, characterized in that: The travel assembly includes a travel track, a travel rack, a travel motor and a driving gear. The frame is slidably matched with the travel track. The travel motor is arranged on one side of the frame. The travel rack is arranged parallel to the travel track. The driving gear is arranged at the rotating end of the travel motor, and the driving gear is meshed with the travel rack.

8. The curved panel edge wrinkle rolling mechanism according to claim 1, characterized in that: A plurality of running wheels are installed at the bottom of the frame, and the running wheels are slidably matched with the running tracks.

9. The curved panel edge wrinkle rolling mechanism according to claim 1, characterized in that: The robotic arm is a five-degree-of-freedom robotic arm.

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