Bending device for metal working

Abstract

This utility model belongs to the field of metal processing technology, specifically relating to a bending device for metal processing, including a base plate. A fixing rod is fixedly installed on the top of the base plate, and a hydraulic rod fixing end is provided at the bottom of the fixing rod. By placing the cylindrical workpiece to be bent on the placement groove of the placement roller, the friction is reduced by contact with the rubber pad to prevent the workpiece from slipping. Then, the workpiece is bent by the pressure head. When in contact with the workpiece, the workpiece is gradually bent by continuously applying pressure. At this time, the placement roller rotates under force. If the bottom of the placement roller is fixed, strong sliding friction will occur between the workpiece and the roller surface when pressing down to bend, which can easily lead to surface scratches, indentations or coating peeling. However, the rotatable placement roller can roll synchronously with the rotation of the workpiece, converting sliding friction into rolling friction, almost eliminating surface damage, thereby reducing bending resistance and reducing equipment load.

Description

Technical Field

[0001] This utility model belongs to the field of metal processing technology, and specifically relates to a bending device for metal processing. Background Technology

[0002] A metal bending device is an industrial equipment specifically designed to apply external force to metal materials, causing them to undergo plastic deformation and form specific angles, curvatures, or complex bending shapes. It is one of the core equipment in the field of metal plastic processing and is widely used in sheet metal processing, pipe manufacturing, automotive parts production, building hardware and other industries.

[0003] Patent publication number CN218903168U discloses a bending device for metal processing, including a support plate. A bending seat is fixedly connected to the upper surface of the support plate, a support side plate is fixedly connected to the back of the bending seat, a top plate is fixedly connected to the front of the support side plate, a power cover is fixedly connected to the bottom surface of the top plate, two electro-hydraulic push rods are fixedly installed on the inner top wall of the power cover, a connecting plate is fixedly connected to the telescopic end of the electro-hydraulic push rods, a bending block is fixedly connected to the bottom surface of the connecting plate, a transmission cover is fixedly connected to the back of the support side plate, a forward and reverse motor is fixedly installed on the back of the transmission cover, a bearing ring is fixedly embedded in the inner side wall of the transmission cover, a threaded transmission rod is fixedly connected to the inner ring of the bearing ring, and the output end of the forward and reverse motor is fixedly connected to the rear end of the threaded transmission rod. This bending equipment has a structure for assisting in unloading metal workpieces after bending, thereby improving the bending processing speed of metal workpieces.

[0004] However, the current bending devices used in metal processing have the following problems: when a cylindrical workpiece comes into contact with a fixed roller, the workpiece will undergo axial or circumferential displacement due to pressure deformation during the bending process, and the fixed roller cannot roll with the workpiece, resulting in sliding friction between the two. This sliding will cause scratches, wear or indentations on the surface of the workpiece. Therefore, we propose a bending device for metal processing. Utility Model Content

[0005] The purpose of this invention is to provide a bending device for metal processing that can solve the problem in related technologies where, when a cylindrical workpiece comes into contact with a fixed roller, the workpiece will undergo axial or circumferential displacement due to pressure deformation during the bending process, and the fixed roller cannot roll with the workpiece, resulting in sliding friction between the two. This sliding will cause scratches, wear or indentations on the surface of the workpiece.

[0006] The specific technical solution adopted by this utility model is as follows:

[0007] A bending device for metal processing includes a base plate, a fixing rod fixedly mounted on the top of the base plate, a fixed end of a hydraulic rod at the bottom of the fixing rod, a pressure head fixedly mounted on the output end of the hydraulic rod, a fixing frame fixedly mounted on the top of the base plate, and a pressure device at the top of the fixing frame. The pressure device includes a placement roller, which is rotatably mounted on the inner wall of the fixing frame. A rotating knob is fixedly mounted on the outer wall of the placement roller, a connecting rod is fixedly mounted on the surface of the rotating knob, and a fixing knob is fixedly mounted on the circumferential surface of the connecting rod. When in contact with a workpiece, continuous pressure is applied to gradually bend the workpiece, causing the placement roller to rotate under force.

[0008] A first spring is provided between the fixing button and the fixing frame. The fixing button is reset by the first spring. The surface of the placement roller is provided with a placement groove, and the surface of the placement groove is provided with a rubber pad to prevent the workpiece from slipping.

[0009] The fixed end of the electric push rod is fixedly installed on the inner wall of the fixed frame, and the output end of the electric push rod is fixedly installed with an ejector plate. After the pressure head is reset, the output end of the electric push rod extends to drive the ejector plate to contact the workpiece, so that the workpiece is automatically ejected.

[0010] The number of rotating knobs is set to two, and they are symmetrical to each other along the vertical central axis of the fixed frame. The number of placing rollers, connecting rods, fixing knobs and spring No. 1 is set to two, and they are symmetrical to each other along the vertical central axis of the base plate.

[0011] The base plate has a centering device on its surface. The centering device includes a support frame, which is fixedly installed on the outer wall of the base plate. The surface of the support frame has a fixed end for a servo motor.

[0012] A reciprocating lead screw is fixedly installed at the output end of the servo motor, and a limit plate is fixedly installed on the circumferential surface of the reciprocating lead screw. The displacement distance of the brake plate is up to the limit plate.

[0013] The reciprocating screw is threaded with a brake plate on its circumferential surface. There are two limit plates and brake plates, which are symmetrical about each other along the vertical central axis of the base plate. The reciprocating screw is driven to rotate by the output end of the servo motor. The rotation of the reciprocating screw causes the brake plates on both sides to move in opposite directions.

[0014] The technical effects achieved by this utility model are as follows:

[0015] This invention utilizes a pressure-applying device. The cylindrical workpiece to be bent is placed on the placement groove of the placement roller, where it contacts a rubber pad to reduce friction and prevent slippage. The workpiece is then bent by a pressure head. During contact with the workpiece, continuous pressure causes it to gradually bend. The placement roller rotates under this pressure. If the bottom of the placement roller is fixed, strong sliding friction will occur between the workpiece and the roller surface during bending, easily leading to surface scratches, indentations, or plating peeling. However, the rotatable placement roller rolls synchronously with the workpiece, converting sliding friction into rolling friction, virtually eliminating surface damage, reducing bending resistance, and decreasing equipment load.

[0016] This invention, through the setting of a pressure device, ensures that the bent workpiece is at a 90° bending angle, so that the bending point is within the range of the ejector plate. After the pressure head resets, the output end of the electric push rod extends to drive the ejector plate to contact the workpiece, so that the workpiece is automatically ejected. When manually removing the workpiece, the operator needs to be in close contact with the mold that is still in working condition, which poses a safety hazard of being pinched or crushed. Automatic ejection can push the workpiece to a safe area, reducing direct contact between the operator and the dangerous area, and reducing the risk of safety accidents from the process perspective.

[0017] This invention, through the setting of a centering device, addresses the issue that after the workpiece is placed, the center of the workpiece may not be on the placement groove due to deviations in the placement position. When the midpoint of the workpiece does not contact the rotating roller, the support points are mostly distributed at both ends or on one side, resulting in uneven force on the workpiece. In this case, the output end of the servo motor drives the reciprocating lead screw to rotate. The rotation of the reciprocating lead screw causes the brake plates on both sides to move relative to each other. The displacement distance of the brake plates is at most to the limit plate, so that after contacting the workpiece, the position of the workpiece is centered. After centering, the geometric center of the workpiece coincides with the processing center of the equipment, which can ensure uniform processing on both sides and significantly reduce dimensional deviations. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the entire utility model;

[0019] Figure 2 This is a schematic diagram of the structure at the position of the pressure application device and the fixing frame of this utility model;

[0020] Figure 3 This is a schematic diagram of the structure at the position of the fixing button and the connecting rod of this utility model;

[0021] Figure 4 This is a schematic diagram of the structure at the position of the ejector plate and the electric push rod of this utility model;

[0022] Figure 5 This is a schematic diagram of the structure at the centering position of the present invention.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1. Base plate; 2. Fixing rod; 3. Hydraulic rod; 4. Pressure head; 5. Fixing frame; 6. Pressure application device; 60. Placement roller; 61. Rotary knob; 62. Connecting rod; 63. Fixing knob; 64. No. 1 spring; 65. Electric push rod; 66. Ejector plate; 7. Centering device; 70. Receiving frame; 71. Servo motor; 72. Reciprocating lead screw; 73. Limiting plate; 74. Brake plate. Detailed Implementation

[0025] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0026] like Figure 1-5 As shown, a bending device for metal processing includes a base plate 1, a fixing rod 2 fixedly installed on the top of the base plate 1, a fixed end of a hydraulic rod 3 provided at the bottom of the fixing rod 2, a pressure head 4 fixedly installed at the output end of the hydraulic rod 3, a fixing frame 5 fixedly installed on the top of the base plate 1, and a pressure device 6 provided on the top of the fixing frame 5. The pressure device 6 includes a placement roller 60, which is rotatably installed on the inner wall of the fixing frame 5. A rotating knob 61 is fixedly installed on the outer wall of the placement roller 60, a connecting rod 62 is fixedly installed on the surface of the rotating knob 61, and a fixing knob 63 is fixedly installed on the circumferential surface of the connecting rod 62, thereby reducing bending resistance and reducing equipment load.

[0027] A first spring 64 is provided between the fixing button 63 and the fixing frame 5. The fixing button 63 is reset by the first spring 64. The surface of the placement roller 60 is provided with a placement groove, and the surface of the placement groove is provided with a rubber pad. The contact with the rubber pad reduces friction and prevents the workpiece from slipping.

[0028] The fixed end of the electric push rod 65 is fixedly installed on the inner wall of the fixed frame 5, and the output end of the electric push rod 65 is fixedly installed with the ejector plate 66.

[0029] The number of rotating knobs 61 is set to two, and they are symmetrical to each other along the vertical central axis of the fixed frame 5. The number of placement rollers 60, connecting rods 62, fixing knobs 63 and springs 64 is set to two, and they are symmetrical to each other along the vertical central axis of the base plate 1.

[0030] A centering device 7 is provided on the surface of the base plate 1. The centering device 7 includes a support frame 70, which is fixedly installed on the outer wall of the base plate 1. The surface of the support frame 70 is provided with a fixed end of a servo motor 71.

[0031] A reciprocating lead screw 72 is fixedly installed at the output end of the servo motor 71, and a limit plate 73 is fixedly installed on the circumferential surface of the reciprocating lead screw 72 to limit the movement position of the brake plate 74.

[0032] The reciprocating lead screw 72 is threaded with a brake plate 74. The number of limit plates 73 and brake plates 74 is set to two, and they are symmetrical to each other along the vertical central axis of the base plate 1. This allows the workpiece to be centered after contact with it. After centering, the geometric center of the workpiece coincides with the machining center of the equipment, which can ensure uniform machining on both sides and significantly reduce dimensional deviation.

[0033] According to the above structure, by placing the cylindrical workpiece to be bent on the placement groove of the placement roller 60, friction is reduced and slippage is prevented through contact with the rubber pad. Then, the output end of the hydraulic rod 3 drives the pressure head 4 to move downward, bending the workpiece. During contact with the workpiece, continuous pressure causes the workpiece to gradually bend. At this time, the placement roller 60 rotates under force. The rotation of the placement roller 60 drives the rotating knob 61 to rotate, which in turn drives the connecting rod 62 to move. The movement of the connecting rod 62 causes the fixing knob 63 to move. The movement of the fixing knob 63 stretches the first spring 64, allowing the placement roller 60 to return to its original position when it moves under force. This allows the placement roller 60 to rotate. The surface of the cylindrical workpiece is an arc-shaped curved surface. If the bottom is a fixed placement roller... When the workpiece is pressed down for bending, the roller 60 generates strong sliding friction with the roller surface, which can easily lead to surface scratches, indentations, or coating peeling. However, the rotatable roller 60 can roll synchronously with the workpiece, converting sliding friction into rolling friction, almost eliminating surface damage. This reduces bending resistance and equipment load. The bent workpiece has a 90° bending angle, so that its bending point is within the range of the ejector plate 66. After the pressure head 4 is reset, the output end of the electric push rod 65 extends to drive the ejector plate 66 to contact the workpiece, so that the workpiece is automatically ejected. When manually removing the workpiece, the operator needs to come into close contact with the mold that is still in working condition, which poses a safety hazard of being pinched or crushed. Automatic ejection can push the workpiece to a safe area, reducing direct contact between humans and dangerous areas, and reducing the risk of safety accidents from the process perspective.

[0034] like Figure 1-5 As shown,;

[0035] According to the above structure, after the workpiece is placed, the center of the workpiece may not be on the placement groove due to the deviation of the placement position. When the center point of the workpiece does not contact the rotating roller, the support points are mostly distributed at both ends or on one side, resulting in uneven force on the workpiece. At this time, the output end of the servo motor 71 drives the reciprocating screw 72 to rotate. The rotation of the reciprocating screw 72 causes the brake plates 74 on both sides to move relative to each other. The displacement distance of the brake plates 74 is up to the limit plate 73, so that after contacting the workpiece, the position of the workpiece is centered. After centering, the geometric center of the workpiece coincides with the processing center of the equipment, which can ensure that the processing amount on both sides is uniform and significantly reduce the dimensional deviation.

[0036] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A bending device for metal processing, characterized in that: Includes a base plate (1), a fixing rod (2) is fixedly installed on the top of the base plate (1), a fixing end of a hydraulic rod (3) is provided at the bottom of the fixing rod (2), a pressure head (4) is fixedly installed at the output end of the hydraulic rod (3), a fixing frame (5) is fixedly installed on the top of the base plate (1), and a pressure device (6) is provided on the top of the fixing frame (5). The pressure device (6) includes a placement roller (60), which is rotatably mounted on the inner wall of the fixed frame (5). A rotating knob (61) is fixedly mounted on the outer wall of the placement roller (60). A connecting rod (62) is fixedly mounted on the surface of the rotating knob (61), and a fixing knob (63) is fixedly mounted on the circumferential surface of the connecting rod (62).

2. The bending device for metal processing according to claim 1, characterized in that: A first spring (64) is provided between the fixing button (63) and the fixing frame (5), and a placement groove is provided on the surface of the placement roller (60), and a rubber pad is provided on the surface of the placement groove.

3. The bending device for metal processing according to claim 2, characterized in that: The inner wall of the fixed frame (5) is fixedly installed with the fixed end of the electric push rod (65), and the output end of the electric push rod (65) is fixedly installed with the top plate (66).

4. The bending device for metal processing according to claim 1, characterized in that: The number of the rotating knobs (61) is set to two, and they are symmetrical to each other along the vertical central axis of the fixing frame (5). The number of the placement rollers (60), connecting rods (62), fixing knobs (63) and springs (64) is set to two, and they are symmetrical to each other along the vertical central axis of the base plate (1).

5. A bending device for metal processing according to claim 1, characterized in that: The base plate (1) is provided with a centering device (7), which includes a support frame (70). The support frame (70) is fixedly installed on the outer wall of the base plate (1), and the surface of the support frame (70) is provided with a fixed end of a servo motor (71).

6. A bending device for metal processing according to claim 5, characterized in that: The output end of the servo motor (71) is fixedly mounted with a reciprocating lead screw (72), and a limit plate (73) is fixedly mounted on the circumferential surface of the reciprocating lead screw (72).

7. A bending device for metal processing according to claim 6, characterized in that: The reciprocating screw (72) is threaded with a brake plate (74) on its circumferential surface. The number of the limiting piece (73) and the brake plate (74) is set to two, and they are symmetrical to each other along the vertical central axis of the base plate (1).

Images