A U-shaped bending mechanism

Abstract

This utility model relates to the field of bending equipment technology, specifically to a U-shaped bending mechanism; it includes a frame, a moving platform, a lifting device, a U-shaped inner mold, a drive cylinder, a rotating arm, a flip plate, a first servo motor, a coarse positioning device, left and right clamping devices, a rear clamping device, a stabilizing device, a lead screw slide, a first cylinder, a first clamping plate, a pneumatic slide, a second cylinder, and a second clamping plate. In this application, when it is necessary to fold the flat plate to different angles, because the first servo motor is equipped with an encoder for angle control, the corresponding angle rotation parameters can be directly set in the CNC system, so that when the first servo motor drives the flip plate to rotate, it can rotate to different angle positions without the need for a long time to change the mold. Thus, it can achieve rapid adjustment and rapid processing when it is necessary to fold to different angles, which is beneficial to improving processing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of bending equipment technology, and in particular to a U-shaped bending mechanism. Background Technology

[0002] A bending machine is a machine that can bend thin plates. It is an important piece of equipment in the sheet metal industry for bending and forming workpieces. Its function is to press steel plates into parts of various shapes according to process requirements. Bending machines are currently widely used in factories.

[0003] A search revealed that prior art CN211564119U discloses a bending machine with an adjustable bending angle, including a bending table. A U-shaped frame is fixedly connected to the upper surface of the bending table, and a hydraulic cylinder is fixedly connected to the upper surface of the U-shaped frame. The output end of the hydraulic cylinder passes through the upper wall of the U-shaped frame and is fixedly connected to a bending knife. A through groove is provided on the bending table, and a fixing block is fixedly connected to the upper surface of the through groove. A trapezoidal slide groove is provided on the fixing block. The bending die is slidably connected to the trapezoidal slide groove through a first trapezoidal slider. The outer shell of an electric push rod passes through the side wall of an L-shaped plate and is fixedly connected to the side wall of the L-shaped plate. A push plate is fixedly connected to the output end of the electric push rod. This device can automatically push out the bent sheet metal without requiring manual removal by the operator. The sheet metal is discharged in an orderly manner, falling from the inclined plate, which facilitates the collection of the sheet metal and saves time.

[0004] However, the above-mentioned equipment has the following problems in use: In the prior art, the sliding bending die can be replaced. By changing different bending dies, different bending angles can be made on the sheet metal. However, changing the die to make different bending angles is not conducive to quick adjustment and bending during processing. Moreover, the die replacement takes a certain amount of time, which seriously reduces processing efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a U-shaped bending mechanism that can be quickly adjusted and processed when different angles need to be bent, thereby improving processing efficiency.

[0006] To achieve the above objectives, this utility model provides a U-shaped bending mechanism, including a frame, a movable platform on the frame, a lifting device on the top of the movable platform, and U-shaped inner molds symmetrically arranged on both sides of the movable platform. The U-shaped inner molds are rotated by a drive cylinder and a rotating arm. A flap is provided on one side of the U-shaped inner mold, and the flap is rotatably connected to the frame, and its rotating shaft is connected to the output shaft of a first servo motor through a coupling.

[0007] The frame is also equipped with a coarse positioning device, left and right clamping devices, a rear clamping device and a stabilizing device. The coarse positioning device is located on both sides of the front of the frame, and the stabilizing device is located on the side away from the rear clamping device.

[0008] The left and right clamping device includes a lead screw slide, a first cylinder and a first clamping plate. The lead screw slide is arranged on the left and right sides of the machine frame. The first cylinder is installed on the slide seat at the top of the lead screw slide, and the first clamping plate is installed on the output end of the first cylinder.

[0009] The rear clamping device includes a pneumatic slide, a second cylinder, and a second clamping plate. The pneumatic slide is mounted on the frame and symmetrically arranged on the rear side of the frame. The second cylinder is mounted on a slide block at the top of the pneumatic slide, and the second clamping plate is mounted on the output end of the second cylinder.

[0010] The frame is also equipped with an air tank and an oil-water separator. The air tank is installed on the front right side of the frame; the oil-water separator is installed on the frame and is connected to an external compressed air source.

[0011] The coarse positioning device includes a limiting plate and rolling bearings. The limiting plate is detachably connected to the frame and is symmetrically arranged. A plurality of rolling bearings are arranged in a line at intervals on the frame and located between the limiting plates.

[0012] The movable frames on both sides of the frame are positioned by a servo adjustment device, which includes a second servo motor and a transmission screw. The second servo motor is fixed to the bottom of the frame and is symmetrically arranged. The transmission screw is rotatably connected to the frame, and its mating nut is connected to the movable frame on the frame by bolts. The transmission screw is connected to the output shaft of the second servo motor by a coupling.

[0013] The rotating arm consists of a connecting arm and a shaped arm. The connecting arm is rotatably connected to the frame and connected to the U-shaped inner mold. The shaped arm is fixedly connected to the connecting arm and connected to the output end of the driving cylinder.

[0014] This utility model discloses a U-shaped bending mechanism. During processing, a flat plate is placed on a central moving platform. Coarse positioning is achieved on the left and right sides using coarse limiting devices. A lifting device on the moving platform clamps and lifts the plate. The moving platform then moves the plate to the U-shaped bending position. The clamping is released, the platform descends, and the plate falls onto the U-shaped bending support structure. The left and right clamping devices and the rear clamping device work together to precisely position the plate. A drive cylinder drives the U-shaped bending inner mold to press the plate. The first and second cylinders release, and the first servo motor drives the flip plate to rotate and fold the product into a U-shape. After the U-shape is completed, the first servo motor returns to its original position, and the drive cylinder drives the U-shaped bending inner mold back to its original position. In this application, when different angles need to be folded from the plate, the first servo motor is equipped with an encoder for angle control. Therefore, the corresponding angle rotation parameters can be directly set in the CNC system, allowing the first servo motor to rotate the flip plate to different angle positions without requiring lengthy mold changes. This enables rapid adjustment and processing when different angles are needed, improving processing efficiency. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0016] Figure 1 This is a schematic diagram of the overall structure of the U-shaped bending mechanism of this utility model.

[0017] Figure 2 This is a schematic diagram of the structure of the flip plate of this utility model.

[0018] Figure 3 This is a schematic diagram of the structure of the drive cylinder of this utility model.

[0019] In the diagram: 101-Frame, 102-Mobile platform, 103-Lifting device, 104-U-shaped inner mold, 105-Drive cylinder, 106-Rotating arm, 107-Flip plate, 108-First servo motor, 109-Stabilizing device, 110-Screw slide, 111-First cylinder, 112-First clamping plate, 113-Pneumatic slide, 114-Second cylinder, 115-Second clamping plate, 116-Air tank, 117-Oil-water separator, 118-Limiting plate, 119-Rolling bearing, 120-Second servo motor, 121-Transmission screw, 1061-Connecting arm, 1062-Irregular arm. Detailed Implementation

[0020] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0021] like Figures 1 to 3 As shown, where Figure 1 This is a schematic diagram of the overall structure of the U-shaped bending mechanism. Figure 2 This is a structural diagram of the flip-plate 107. Figure 3 This is a schematic diagram of the drive cylinder 105. This utility model provides a U-shaped bending mechanism, including a frame 101, a moving platform 102, a lifting device 103, a U-shaped inner mold 104, a drive cylinder 105, a rotating arm 106, a flip plate 107, a first servo motor 108, a coarse positioning device, left and right clamping devices, a rear clamping device, a stabilizing device 109, a lead screw slide 110, a first cylinder 111, a first clamping plate 112, a pneumatic slide 113, a second cylinder 114, and a second clamping plate 115. The coarse positioning device includes a limiting plate 118 and a rolling bearing 119. The servo adjustment device includes a second servo motor 120 and a transmission lead screw 121. This solution enables rapid adjustment and processing when different angles need to be bent, improving processing efficiency. It is understood that this solution allows for rapid adjustment and processing when bending flat plates at different angles.

[0022] In this embodiment, a mobile platform 102 is provided on the frame 101, and a lifting device 103 is provided on the top of the mobile platform 102. The mobile platform 102 adopts a servo screw slide, which has the same structure as the screw slide 110. The lifting device 103 is provided on the top. The lifting device 103 drives the moving plate to lift and lower through a cylinder. A limiting plate is provided on the top rear side of the moving plate, and a rectangular plate driven by a cylinder is provided on the front side to cooperate in clamping or releasing the plate.

[0023] The mobile platform 102 has symmetrically arranged U-shaped inner molds 104 on both sides. The U-shaped inner molds 104 rotate via a drive cylinder 105 and a rotating arm 106. A flap 107 is provided on one side of each U-shaped inner mold 104, and the flap 107 is rotatably connected to the frame 101. Its rotating shaft is connected to the output shaft of the first servo motor 108 via a coupling. When the drive cylinder 105 is activated, it pushes the rotating arm 106 to move, which in turn causes the U-shaped inner molds 104 to press the flat plate together. Both connecting parts on the sides of the drive cylinder 105 are rotatable structures.

[0024] The frame 101 is also equipped with a coarse positioning device, left and right clamping devices, a rear clamping device, and a stabilizing device 109. The coarse positioning devices are located on both sides of the front of the frame 101, and the stabilizing device 109 is located on the side away from the rear clamping device. The coarse positioning devices are used for limiting the fit at both ends of the flat plate, and the left and right clamping devices and the rear clamping device are used for fine positioning on the left and right sides and the rear side of the flat plate, respectively. The stabilizing device 109 is a support plate used to support the bottom of the flat plate, and the height of the support plate is flush with the top support surface of the frame 101.

[0025] The lead screw slide 110 is arranged on the left and right sides of the frame 101. The first cylinder 111 is installed on the slide seat at the top of the lead screw slide 110, and the first clamping plate 112 is installed on the output end of the first cylinder 111. The lead screw slide 110 is driven to rotate by a servo motor with an encoder. The T-shaped nut of the lead screw is connected to the top slide seat by bolts. The slide seat is also connected to the linear slider of the guide rail slider mechanism. The corresponding structure is similar to the X-axis transmission structure of a vertical machining center. The first cylinder 111 is fixed by bolts, and a magnetic ring switch is set on the outside of the housing to monitor the piston movement position. The first clamping plate 112 is connected to the output end of the first cylinder 111 by countersunk bolts.

[0026] The pneumatic slide 113 is mounted on the frame 101 and symmetrically arranged on the rear side of the frame 101. The second cylinder 114 is mounted on the slide block at the top of the pneumatic slide 113, and the second clamping plate 115 is mounted on the output end of the second cylinder 114. The pneumatic slide 113 is used to drive the second cylinder 114 to move. The second clamping plate 115 is connected to the output end of the second cylinder 114 by countersunk bolts. In this application, the surface of the clamping plate that contacts the flat plate at the corresponding position can be glued and fixed with anti-slip pads to improve stability during clamping.

[0027] Secondly, the air storage tank 116 is installed on the right front side of the frame 101; the oil-water separator 117 is installed on the frame 101 and connected to an external compressed air source. The air storage tank 116 is used for compressed air storage. Adding the air storage tank 116 to the equipment's air supply pipeline facilitates compressed air storage and improves the stability of air supply to the corresponding cylinder. The oil-water separator 117 can be used for air pressure regulation.

[0028] Then, the limiting plate 118 is detached from the frame 101 and symmetrically arranged; a plurality of rolling bearings 119 are arranged in a line at intervals on the frame 101 and located between the limiting plates 118. The limiting plates 118 are fixed by bolts, and the installation of the plurality of rolling bearings 119 facilitates rolling support when the plate moves.

[0029] Furthermore, the second servo motor 120 is fixed to the bottom of the frame 101 and symmetrically arranged; the transmission screw 121 is rotatably connected to the frame 101, and its mating nut is connected to the movable frame on the frame 101 by bolts. The transmission screw 121 is connected to the output shaft of the second servo motor 120 through a coupling. The second servo motor 120 is equipped with a brake mechanism and an encoder, and is fixed to the frame 101 by bolts. A guide rail slider assembly is provided on the frame 101. The linear guide rail is fixed by countersunk bolts, and the linear slider is connected to the movable frame by bolts. Shaft ends are installed on both sides of the transmission screw 121, and are installed by bearings and detachable bearing seats respectively. Its T-shaped mating nut is connected to the movable frame on the frame 101 by bolts. When the second servo motor 120 is activated, it will drive the transmission screw 121 to rotate, and finally realize the rotation of the movable frame, so that the position of the U-shaped inner mold 104 and the plate can be adjusted as needed. A reinforcing plate is bolted to the side of the movable frame away from the rotating arm 106, and the reinforcing plate at the bottom does not interfere with the rotation of the irregular arm 1062.

[0030] Finally, the rotating arm 106 consists of a connecting arm 1061 and a shaped arm 1062. The connecting arm 1061 is rotatably connected to the frame 101 and connected to the U-shaped inner mold 104. The shaped arm 1062 is fixedly connected to the connecting arm 1061 and connected to the output end of the drive cylinder 105. A rotatable connecting mechanism on the shaped arm 1062 is connected to the output end of the drive cylinder 105. The connecting arm 1061 is mounted on the movable frame of the frame 101 via bearings and is connected to the U-shaped inner mold 104 and the shaped arm 1062 via bolts.

[0031] When using this invention to achieve rapid adjustment and processing when different angles need to be folded, thereby improving processing efficiency, the flat plate is placed on the central moving platform 102 during processing. At this time, the moving platform 102 is at the foremost position, and the left and right sides of the flat plate are coarsely positioned by the coarse limiting devices. The top front cylinder of the lifting device 103 on the moving platform 102 clamps the flat plate, and the bottom cylinder of the moving platform lifts the flat plate. Then, the moving platform 102 moves the flat plate to the U-shaped position, the clamping of the moving platform 102 is released, the moving platform 102 descends, and the flat plate falls onto the support structure of the U-shaped fold. The left and right clamping devices and the rear clamping device cooperate to precisely position the flat plate. The drive cylinder 105 drives the rotating arm 106 to move, so that the inner mold 104 of the U-shaped fold presses the flat plate. The first cylinder 111 and the second cylinder... When cylinder 114 is released, the first servo motor 108 drives the flip plate 107 to rotate and fold the product into a U-shape. After the U-shape is completed, the first servo motor 108 returns to its original position, and the drive cylinder 105 drives the U-shape inner mold 104 to return to its original position. Finally, the moving platform 102 lifts the product to complete the U-shape folding, clamps the product at the front and rear, and moves the product to the loading and unloading position. In this application, when it is necessary to fold the flat plate to different angles, since the first servo motor 108 is equipped with an encoder for angle control, the corresponding angle rotation parameters can be directly set in the CNC system. This allows the first servo motor 108 to rotate the flip plate 107 to different angle positions without requiring a long time to change the mold. This enables rapid adjustment and processing when different angles need to be folded, which helps to improve processing efficiency.

[0032] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A U-shaped bending mechanism, comprising a frame, a movable platform mounted on the frame, and a lifting device mounted on the top of the movable platform, characterized in that: The mobile platform is symmetrically provided with U-shaped inner molds on both sides. The U-shaped inner molds are rotated by the cooperation of a drive cylinder and a rotating arm. A flap is provided on one side of the U-shaped inner mold. The flap is rotatably connected to the frame, and its rotating shaft is connected to the output shaft of the first servo motor through a coupling. The frame is also equipped with a coarse positioning device, left and right clamping devices, a rear clamping device and a stabilizing device. The coarse positioning device is located on both sides of the front of the frame, and the stabilizing device is located on the side away from the rear clamping device. The left and right clamping device includes a lead screw slide, a first cylinder and a first clamping plate. The lead screw slide is arranged on the left and right sides of the machine frame. The first cylinder is installed on the slide seat at the top of the lead screw slide, and the first clamping plate is installed on the output end of the first cylinder. The rear clamping device includes a pneumatic slide, a second cylinder, and a second clamping plate. The pneumatic slide is mounted on the frame and symmetrically arranged on the rear side of the frame. The second cylinder is mounted on a slide block at the top of the pneumatic slide, and the second clamping plate is mounted on the output end of the second cylinder.

2. The U-shaped bending mechanism as described in claim 1, characterized in that: The frame is also equipped with an air tank and an oil-water separator. The air tank is installed on the front right side of the frame; the oil-water separator is installed on the frame and is connected to an external compressed air source.

3. The U-shaped bending mechanism as described in claim 1, characterized in that: The coarse positioning device includes a limiting plate and rolling bearings. The limiting plate is detachably connected to the frame and is symmetrically arranged. A plurality of rolling bearings are arranged in a line at intervals on the frame and located between the limiting plates.

4. The U-shaped bending mechanism as described in claim 1, characterized in that: The movable frames on both sides of the frame are positioned by a servo adjustment device, which includes a second servo motor and a transmission screw. The second servo motor is fixed to the bottom of the frame and is symmetrically arranged. The transmission screw is rotatably connected to the frame, and its mating nut is connected to the movable frame on the frame by bolts. The transmission screw is connected to the output shaft of the second servo motor by a coupling.

5. The U-bending mechanism according to claim 1, wherein : The rotating arm consists of a connecting arm and a shaped arm. The connecting arm is rotatably connected to the frame and connected to the U-shaped inner mold. The shaped arm is fixedly connected to the connecting arm and connected to the output end of the drive cylinder.

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