Safe limiting oil-electric hybrid bending machine

Abstract

The utility model belongs to the technical field of bending machines, and discloses a safe limiting gas-electric hybrid bending machine which comprises a base plate and a bending machine body fixed on the upper side of the base plate, a concave frame shell is fixedly connected to the rear side wall of the bending machine body, a pushing mechanism is arranged in the concave frame shell, and the pushing mechanism is arranged on the base plate. The two ends of the pushing mechanism extend to the position above the concave frame shell and are fixedly connected with a containing plate, two limiting clamping mechanisms are arranged on the containing plate, each limiting clamping mechanism comprises a fixing strip shell fixed to one end of the lower side of the containing plate, and a hand wheel rod is inserted into and rotationally connected with one end of each fixing strip shell. According to the bending machine, one end of the workpiece can be limited and fixed through the limiting and clamping mechanism, the workpiece can be bent more stably, deviation is prevented, the machining quality is guaranteed, the workpiece on the containing plate can be fed into the bending machine body to be bent through the pushing mechanism, feeding is stable, and operation is safer.

Description

Technical Field

[0001] The utility model relates to the technical field of bending machines, in particular to an oil-electric hybrid bending machine with safety limit. Background Art

[0002] CNC bending machine uses the equipped mold (general or special mold) to bend the metal sheet in the cold state into workpieces of various geometric cross-sectional shapes. It is a sheet forming machine designed for cold rolled sheet metal processing. It is widely used in sheet bending processing in the automobile, aircraft manufacturing, light industry, shipbuilding, container, elevator, railway vehicle and other industries.

[0003] In a Chinese patent for an efficient and energy-saving oil-electric hybrid CNC bending machine (patent number: CN113071130B), the device includes a bending machine body, the bending machine body includes an upper die and a lower die arranged up and down, the upper die is connected to a tool for bending, and the lower die is connected to a positioning groove adapted to the bending tool; the bending machine body is also connected to a driving device for driving the upper die to move up and down, the driving device includes an oil cylinder, and the output rod of the oil cylinder is connected to the upper die; an oil tank is provided in the bending machine body, the oil tank is connected to an oil pump, the oil pump is connected to a servo motor, and the oil pump is driven by the servo motor to work, so that the piston rod of the oil cylinder moves, and the proportional valve and the directional valve reversing are omitted. When the servo motor is started, the oil pump can be close to pressure-free starting, the response speed is fast, and the work efficiency is improved. However, when the device is in use, there is no mechanism for clamping and limiting the workpiece to be bent. If manual hand support is used, it is easy to cause the workpiece to be bent to deviate, resulting in deviation of the bending part, quality problems, and safety hazards. Summary of the invention

[0004] The purpose of the utility model is to provide a safe limited oil-electric hybrid bending machine to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a safety-limited oil-electric hybrid bending machine, comprising a base plate and a bending machine body fixed to the upper side of the base plate, the rear side wall of the bending machine body is fixedly connected with a concave frame shell, a pushing mechanism is provided in the concave frame shell, both ends of the pushing mechanism extend to the top of the concave frame shell and are fixedly connected with a placement plate, and two limit clamping mechanisms are provided on the placement plate;

[0006] The limit clamping mechanism includes a fixed bar shell fixed to one end of the lower side of the placing plate, one end of the fixed bar shell is inserted and rotatably connected to a handwheel rod, one end of the handwheel rod passes through the fixed bar shell and is fixedly connected to a screw rod, a nut block is threadedly connected to the screw rod, and the upper end of the nut block is fixedly connected to a moving frame, a sliding opening is opened on the upper side wall of the fixed bar shell, the upper end of the moving frame passes through the sliding opening and is hingedly connected to a swing frame, one side of the placing plate is hingedly connected to an L-shaped pressure block, and one end of the swing frame is hingedly connected to the L-shaped pressure block.

[0007] As a further solution of the utility model: wherein, the pushing mechanism includes a stepper motor fixed on one side of the concave frame shell, the main shaft end of the stepper motor penetrates into the concave frame shell and is fixedly connected to a rotating rod, two first transmission wheels are fixedly connected to the rotating rod, the two radial end inner walls of the concave frame shell are rotatably connected to two second transmission wheels through a rotating shaft, the two first transmission wheels are transmission-connected to the two second transmission wheels through a transmission belt, the upper side wall of the transmission belt is fixedly connected to a pushing rack, the upper sides of the two radial ends of the concave frame shell are provided with openings, the two pushing racks respectively pass through the two openings and are fixedly connected to the placement plate.

[0008] As a further solution of the utility model: wherein, the outer wall of the rotating rod and the inner wall of the through hole of the first transmission wheel are fixedly connected by welding.

[0009] As a further solution of the utility model: wherein, the upper side wall of the concave frame shell is fixedly connected with a support frame, and the support frame passes through the pushing frame.

[0010] As a further solution of the utility model: wherein, the transmission belt is made of a steel belt material component, and the side wall of the transmission belt is fixedly connected to the pushing frame by welding.

[0011] As a further solution of the utility model: wherein, the inner bottom wall of the fixed strip shell is slidably connected to the lower end side wall of the nut block.

[0012] As a further solution of the utility model: wherein, the inner wall of one end of the fixed strip housing is rotatably connected to one end of the screw rod through a bearing seat.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. This kind of safety limited oil-electric hybrid bending machine sets a limit clamping mechanism, places one end of the workpiece on the placement plate, rotates the handwheel rod, drives the screw rod to rotate, at this time, the nut block is forced to move, and then drives the moving frame to move. At this time, it drives the swing frame to move and swing, and can push the L-shaped pressure block to swing down until the workpiece is clamped and fixed to a limit position, which can make the workpiece more stable during bending processing, prevent deviation, and ensure the quality of bending processing.

[0015] 2. This safety-limited oil-electric hybrid bending machine is equipped with a pushing mechanism. After clamping and fixing one end of the workpiece, the stepper motor is started to drive the two first transmission wheels on the rotating rod to rotate synchronously. Since the two first transmission wheels are transmitted to the two second transmission wheels through two transmission belts, at this time, the two transmission belts are synchronously conveyed, which can drive the two pushing racks to move synchronously, and then drive the workpiece on the placement plate into the bending machine body for bending processing. The feeding is stable and the operation is safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 It is a three-dimensional enlarged structural diagram of the concave frame shell and the placement plate in the utility model;

[0018] Figure 3 It is a schematic diagram of the left side cross-sectional structure of the placement plate in the utility model;

[0019] Figure 4 It is a schematic diagram of the top cross-sectional structure of the concave frame shell in the utility model.

[0020] The corresponding relationship between the illustrations and component names in the figure is as follows:

[0021] 1. Base plate; 2. Press brake body; 3. Concave frame shell; 4. Placement plate; 5. Fixed strip shell; 6. Handwheel rod; 7. Screw rod; 8. Nut block; 9. Moving frame; 10. Slide; 11. Swing frame; 12. L-shaped pressure block; 13. Stepper motor; 14. Rotating rod; 15. First transmission wheel; 16. Second transmission wheel; 17. Transmission belt; 18. Pushing frame; 19. Opening; 20. Support frame. DETAILED DESCRIPTION

[0022] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0023] See also Figures 1 to 4In the practical embodiment, a safety-limited oil-electric hybrid bending machine is suitable for bending plate workpieces, including a base plate 1 and a bending machine body 2 fixed on the upper side of the base plate 1. The rear side wall of the bending machine body 2 is fixedly connected with a concave frame shell 3, and a pushing mechanism is provided in the concave frame shell 3. Both ends of the pushing mechanism extend to the top of the concave frame shell 3 and are fixedly connected with a placement plate 4. One end of the workpiece is placed on the placement plate 4. Only one end needs to be fixed, which will not affect the processing of the bending end. Two limit clamping mechanisms are provided on the placement plate 4, and the clamping is more stable.

[0024] Specifically, Figure 2-3 As shown, the limit clamping mechanism includes a fixed bar shell 5 fixed to one end of the lower side of the placement plate 4, one end of the fixed bar shell 5 is inserted and rotatably connected to a handwheel rod 6, one end of the handwheel rod 6 passes through the fixed bar shell 5 and is fixedly connected to a screw rod 7, a nut block 8 is threadedly connected to the screw rod 7, the upper end of the nut block 8 is fixedly connected to a moving frame 9, the upper side wall of the fixed bar shell 5 is provided with a sliding opening 10, the upper end of the moving frame 9 passes through the sliding opening 10 and is hingedly connected to a swing frame 11, one side of the placement plate 4 is hingedly connected to an L-shaped pressing block 12, and one end of the swing frame 11 is hingedly connected to the L-shaped pressing block 12;

[0025] When one end of the workpiece needs to be clamped and limited, one end of the workpiece is placed on the placement plate 4, and the handwheel rod 6 is turned to drive the screw rod 7 to rotate. Since the screw rod 7 is threadedly connected to the nut block 8, the nut block 8 is forced to move, thereby pushing the moving frame 9 to move. At this time, the swing frame 11 is driven to move and swing, which can push the L-shaped pressure block 12 to swing and press down until the workpiece is clamped and limited. This can make the workpiece more stable during bending processing, prevent deviation, and ensure the quality of bending processing.

[0026] like Figure 2 and Figure 4 As shown: the pushing mechanism includes a stepper motor 13 fixed on one side of the concave frame shell 3, and the input end of the stepper motor 13 is electrically connected to the power supply control end of the bending machine body 2. The circuit involved is a prior art, and a person skilled in the art can fully implement it. It is needless to say that the main shaft end of the stepper motor 13 passes through the concave frame shell 3 and is fixedly connected to a rotating rod 14, and two first transmission wheels 15 are fixedly connected to the rotating rod 14. The inner walls of the two radial ends of the concave frame shell 3 are rotatably connected to two second transmission wheels 16 through a rotating shaft. The two first transmission wheels 15 are transmission-connected to the two second transmission wheels 16 through a transmission belt 17. The upper side wall of the transmission belt 17 is fixedly connected to a pushing rack 18. The upper sides of the two radial ends of the concave frame shell 3 are provided with openings 19. The two pushing racks 18 pass through the two openings 19 respectively and are fixedly connected to the placement plate 4.

[0027] After one end of the workpiece is clamped and fixed, the stepper motor 13 is started to drive the two first transmission wheels 15 on the rotating rod 14 to rotate synchronously. Since the two first transmission wheels 15 are transmitted to the two second transmission wheels 16 through two transmission belts 17, at this time, the two transmission belts 17 are synchronously transported, which can drive the two pushing racks 18 to move synchronously, and then drive the workpiece on the placement plate 4 to be sent into the bending machine body 2 for bending processing, the feeding is stable, and the operation is safer.

[0028] Furthermore, if Figure 4 As shown, the outer wall of the rotating rod 14 and the inner wall of the through hole of the first transmission wheel 15 are fixedly connected by welding, and the connection is firm.

[0029] Furthermore, if Figure 2 As shown: the upper side wall of the concave frame shell 3 is fixedly connected with a support frame 20, and the support frame 20 is arranged through the pushing frame 18, which can play a supporting and guiding role in the displacement of the pushing frame 18.

[0030] Furthermore, if Figure 3 As shown: the inner bottom wall of the fixed bar housing 5 is slidably connected to the lower end side wall of the nut block 8, which can prevent the nut block 8 from axially rotating. The inner wall of one end of the fixed bar housing 5 is rotatably connected to one end of the screw rod 7 through the bearing seat, so that the screw rod 7 rotates stably.

[0031] Finally, if Figure 4 As shown, the transmission belt 17 is made of a steel belt, and the side wall of the transmission belt 17 is fixedly connected to the pushing frame 18 by welding, so the connection is firm.

[0032] The working principle of this utility model:

[0033] When using the device to bend a workpiece, first, place one end of the workpiece on the placement plate 4, turn the handwheel rod 6, and drive the screw rod 7 to rotate. Since the screw rod 7 is threadedly connected to the nut block 8, the nut block 8 is forced to move, thereby pushing the moving frame 9 to move. At this time, the swing frame 11 is driven to move and swing, and the L-shaped pressing block 12 can be pushed to swing and press down until the workpiece is pressed and fixed in a limited position, which can make the workpiece more stable during bending, prevent deviation, and ensure the quality of bending.

[0034] Then, the stepper motor 13 is started to drive the two first transmission wheels 15 on the rotating rod 14 to rotate synchronously. Since the two first transmission wheels 15 are transmitted to the two second transmission wheels 16 through two transmission belts 17, at this time, the two transmission belts 17 are synchronously transported, which can drive the two pushing racks 18 to move synchronously, and then drive the workpiece on the placement plate 4 to be sent into the bending machine body 2 for bending processing, so that the feeding is stable and the operation is safer.

[0035] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A safety-limited hybrid bending machine, comprising a base plate (1) and a bending machine body (2) fixed to the upper side of the base plate (1), characterized in that: The rear side wall of the bending machine body (2) is fixedly connected to a concave frame shell (3), a pushing mechanism is provided in the concave frame shell (3), two ends of the pushing mechanism extend to the top of the concave frame shell (3) and are fixedly connected to a placement plate (4), and two limit clamping mechanisms are provided on the placement plate (4); The position-limiting clamping mechanism comprises a fixed bar shell (5) fixed to one end of the lower side of the placement plate (4); a handwheel rod (6) is inserted into and rotatably connected to one end of the fixed bar shell (5); one end of the handwheel rod (6) passes through the fixed bar shell (5) and is fixedly connected to a screw rod (7); a nut block (8) is threadedly connected to the screw rod (7); the upper end of the nut block (8) is fixedly connected to a moving frame (9); a sliding opening (10) is formed on the upper side wall of the fixed bar shell (5); the upper end of the moving frame (9) passes through the sliding opening (10) and is hingedly connected to a swing frame (11); one side of the placement plate (4) is hingedly connected to an L-shaped pressing block (12); one end of the swing frame (11) is hingedly connected to the L-shaped pressing block (12).

2. A safety-limited hybrid bending machine according to claim 1, characterized in that: The pushing mechanism comprises a stepping motor (13) fixed to one side of the concave frame shell (3); the main shaft end of the stepping motor (13) passes through the concave frame shell (3) and is fixedly connected to a rotating rod (14); two first transmission wheels (15) are fixedly connected to the rotating rod (14); the inner walls of the two radial ends of the concave frame shell (3) are rotatably connected to two second transmission wheels (16) via a rotating shaft; the two first transmission wheels (15) are transmission-connected to the two second transmission wheels (16) via a transmission belt (17); the upper side wall of the transmission belt (17) is fixedly connected to a pushing rack (18); the upper sides of the two radial ends of the concave frame shell (3) are provided with openings (19); the two pushing racks (18) respectively pass through the two openings (19) and are fixedly connected to the placement plate (4).

3. A safety-limited hybrid bending machine according to claim 2, characterized in that: The outer wall of the rotating rod (14) and the inner wall of the through hole of the first transmission wheel (15) are fixedly connected by welding.

4. The safety-limited hybrid bending machine according to claim 2 is characterized in that: The upper side wall of the concave frame shell (3) is fixedly connected to a support frame (20), and the support frame (20) is arranged to penetrate the pushing frame (18).

5. The safety-limited hybrid bending machine according to claim 2 is characterized in that: The transmission belt (17) is made of a steel belt material component, and the side wall of the transmission belt (17) is fixedly connected to the pushing frame (18) by welding.

6. The safety-limited hybrid bending machine according to claim 1 is characterized in that: The inner bottom wall of the fixed bar housing (5) is slidably connected to the lower end side wall of the nut block (8).

7. A safety-limited hybrid bending machine according to claim 6, characterized in that: The inner wall of one end of the fixed strip housing (5) is rotatably connected to one end of the screw rod (7) via a bearing seat.

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