Hydraulic multifunctional metal material machining and bending device

Abstract

The invention relates to the technical field of bending devices, and particularly discloses a hydraulic multifunctional metal material machining and bending device which comprises a rack and a workbench fixedly installed at the top of the rack and used for containing a metal pipe, and the workbench is provided with an extrusion bending unit, a multi-point auxiliary bending unit and a variable pitch unit. Lateral pressure is applied to the metal pipe through the lateral pressure pulley, the metal pipe can be assisted to be kept stable during bending, the metal pipe is prevented from deviating or twisting in the bending process, meanwhile, the bending radius of the metal pipe can be accurately controlled through movement of the lateral pressure pulley, and errors of the bending radians of the two ends of the metal pipe are avoided; therefore, it can be ensured that the same bending radius and radian can be achieved during bending each time, the bending precision is improved, it is ensured that metal pipes produced in batches have the consistent quality, it can be ensured that the metal pipes are evenly stressed in the bending process through movement of the side pressing pulleys, and deformation or damage of the metal pipes caused by local overlarge stress is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of bending devices, and more specifically, to a hydraulic multifunctional metal material processing and bending device. Background Art

[0002] Steel is a material made by pouring molten steel and cooling it, then mechanically pressing or cutting it. It has high strength, good plasticity and toughness, as well as excellent welding and processing properties. Therefore, it is widely used in construction, machinery, automobiles, ships, aerospace and other fields. In order to meet specific structural, functional and aesthetic requirements, it is often necessary to process steel into various shapes and angles. Bending is a common processing method. Common steels that need to be bent include round steel pipes, square steel pipes, etc.

[0003] At present, when bending a metal tube, the pre-treated metal tube is first placed on the workbench of the bending machine, and then the bending machine is started so that the extrusion component applies pressure to the middle of the metal tube. As the pressure gradually increases, the metal tube undergoes elastic deformation and gradually transitions to the plastic deformation stage. When the predetermined bending angle is reached, the pressure is stopped. However, this bending method still has certain defects.

[0004] First, since the extrusion force is mainly concentrated in the middle section of the metal tube, this part of the metal tube will be subjected to greater stress, and the concentration of stress may cause excessive deformation of the middle section of the metal tube, and even the risk of cracks or breakage. At the same time, the two ends of the metal tube may also undergo unnecessary displacement or vibration due to lack of support.

[0005] Secondly, since the metal tube cannot be evenly stressed during the bending process, the radius of the metal tube is unstable during bending, which makes the shape after bending difficult to control and may result in inconsistent bending radians, thereby reducing the bending accuracy. Summary of the invention

[0006] The invention provides a hydraulic multifunctional metal material processing and bending device, which solves the technical problem in the prior art that the extrusion force is mainly concentrated on the middle section of the metal pipe.

[0007] The present invention provides a hydraulic multifunctional metal material processing and bending device, comprising a frame and a workbench fixedly installed on the top of the frame and used to place metal pipes, the workbench is provided with an extrusion and bending unit, a multi-point auxiliary bending unit and a variable pitch unit, the extrusion and bending unit comprises a central extrusion component and a driving component for driving the central extrusion component to extrude the metal pipe, the multi-point auxiliary bending unit comprises an auxiliary extrusion component and a control component for controlling the auxiliary extrusion component to assist in extruding the metal pipe.

[0008] The auxiliary extrusion assembly includes two inclined grooves opened on the top of the workbench and symmetrically arranged front and back, and a sliding sleeve rod slidably connected in the inclined grooves, a side pressure pulley is rotatably installed on the top of the sliding sleeve rod, a T-shaped sliding groove is opened at the bottom of the workbench, an articulated frame is slidably connected in the T-shaped sliding groove through a T-shaped slider, two connecting rods are hinged on the articulated frame, and the other ends of the two connecting rods are respectively hinged to the bottom ends of the two sliding sleeve rods.

[0009] The driving component drives the central extrusion component to extrude and bend the center of the metal tube. At the same time, during the extrusion process, the extrusion component will drive the control component to synchronously drive the two sliding sleeves to slide to the left along the inclined groove. During the sliding process, the side pressure pulley is driven to always press the metal tube as the metal tube gradually bends, thereby bending the metal tube into a U shape.

[0010] Furthermore, the central extrusion assembly includes a transverse slide groove opened on the top of the workbench and a slide rod slidably connected in the transverse slide groove, and a detachable extrusion pulley for extruding the metal tube is rotatably installed on the top of the slide rod.

[0011] Furthermore, two longitudinal slide grooves symmetrically arranged in front and back are provided on the top of the workbench, a second slide rod is slidably connected in the longitudinal slide groove, and an abutment pulley is rotatably installed on the top of the second slide rod.

[0012] Furthermore, the driving assembly includes a fixing frame fixedly mounted on the bottom of the workbench and a hydraulic cylinder fixedly mounted on the right side of the fixing frame, and a driving plate fixedly mounted on the output end of the hydraulic cylinder and fixedly connected to a bottom end of the sliding rod.

[0013] Furthermore, the control assembly includes two driving racks fixedly mounted on the front and rear sides of the driving plate and symmetrical to each other, and two rotating gears symmetrically mounted on the bottom of the workbench and meshing with the corresponding driving racks.

[0014] Furthermore, two driven racks that are symmetrical front and rear and mesh with corresponding rotating gears are fixedly installed at the bottom of the articulated frame.

[0015] Furthermore, the pitch-changing unit comprises two fixing plates fixedly mounted on the bottom of the workbench and a bidirectional screw rod rotatably mounted between the two fixing plates.

[0016] Furthermore, two adjusting blocks which are symmetrical front to back are threadedly connected to the outer side of the bidirectional lead screw, and the two adjusting blocks are respectively fixedly connected to the two sliding rods.

[0017] Furthermore, a driving motor is fixedly installed on the front side of the front fixing plate, and the front end of the bidirectional screw rod slides through the front fixing plate and is fixedly connected to the output shaft of the driving motor.

[0018] Furthermore, a limiting disc is fixedly installed on the top of the abutting pulley, and the limiting disc limits the metal tube and prevents it from deflecting during the process of extruding the metal tube.

[0019] The beneficial effects of the present invention are as follows: 1. By applying lateral pressure to the metal tube through the side pressure pulley, the metal tube can be assisted to remain stable during bending and prevent the metal tube from being offset or twisted during the bending process. At the same time, through the movement of the side pressure pulley, the bending radius of the metal tube can be accurately controlled to avoid errors in the bending curvature at both ends of the metal tube, thereby ensuring that each bending can achieve the same bending radius and curvature, improving the bending accuracy, and ensuring that the mass-produced metal tubes have consistent quality. In addition, the movement of the side pressure pulley can ensure that the metal tube is evenly stressed during the bending process, avoiding deformation or damage of the metal tube caused by local excessive stress.

[0020] 2. By keeping the position of the output end of the hydraulic cylinder unchanged, the metal tube can be given enough time to adapt to the new shape, so that a small reset deformation will not occur due to elastic recovery, thereby reducing the dimensional error caused by rapid rebound, thereby improving the bending accuracy. For mass production, maintaining pressure for a period of time can also ensure that the bending angle and shape of each metal tube are consistent, thereby improving the mass production accuracy and consistency of metal tubes.

[0021] 3. By adjusting the distance between the two abutting pulleys and replacing the detachable extrusion pulley according to the distance between the two abutting pulleys and the diameter or width of the metal pipe after the adjustment, metal pipes of various specifications can be processed, thereby improving the processing range of the equipment and reflecting the versatility of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0023] Figure 2 It is a schematic diagram of the three-dimensional structure of the T-shaped slideway, side pressure pulley, frame and workbench of the present invention.

[0024] Figure 3 It is a partial three-dimensional structural schematic diagram of the extrusion bending unit, the multi-point auxiliary bending unit and the variable pitch unit of the present invention.

[0025] Figure 4 It is a partial three-dimensional structural schematic diagram of the fixing frame, hydraulic cylinder, driving rack, driven rack and driving plate of the present invention.

[0026] Figure 5 It is a partial three-dimensional structural schematic diagram of the articulated frame, connecting rod, sliding sleeve rod, transverse slide groove and longitudinal slide groove of the present invention.

[0027] Figure 6 It is a partial three-dimensional structural schematic diagram of the abutment pulley, the limiting disc, the second sliding rod, the bidirectional screw rod and the adjusting block of the present invention.

[0028] In the figure: 1, frame; 2, workbench; 3, metal pipe; 4, extrusion bending unit; 5, multi-point auxiliary bending unit; 6, variable pitch unit; 401, central extrusion assembly; 402, drive assembly; 4011, transverse slide; 4012, slide bar 1; 4013, detachable extrusion pulley; 4014, longitudinal slide; 4015, slide bar 2; 4016, abutment pulley; 4017, limiting disc; 4021, fixed frame; 4022, hydraulic cylinder; 4 023, driving plate; 501, auxiliary extrusion assembly; 502, control assembly; 5011, inclined groove; 5012, sliding sleeve rod; 5013, side pressure pulley; 5014, T-shaped slide groove; 5015, T-shaped slider; 5016, articulated frame; 5017, connecting rod; 5021, rotating gear; 5022, driving rack; 5023, driven rack; 601, fixing plate; 602, bidirectional screw rod; 603, adjusting block; 604, driving motor. DETAILED DESCRIPTION

[0029] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that the discussion of these embodiments is to enable those skilled in the art to better understand and implement the subject matter described herein. The functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the present specification. Various examples may omit, replace or add various processes or components as needed. In addition, the features described relative to some examples may also be combined in other examples.

[0030] See also Figure 1 , Figure 2 and Figure 3 In this embodiment, a hydraulic multifunctional metal material processing and bending device is proposed, including a frame 1 and a workbench 2 fixedly installed on the top of the frame 1 and used to place a metal tube 3, the workbench 2 is provided with an extrusion and bending unit 4, a multi-point auxiliary bending unit 5 and a variable pitch unit 6, the extrusion and bending unit 4 includes a central extrusion component 401 and a driving component 402 for driving the central extrusion component 401 to extrude the metal tube 3, the multi-point auxiliary bending unit 5 includes an auxiliary extrusion component 501 and a control component 502 for controlling the auxiliary extrusion component 501 to assist in extruding the metal tube 3.

[0031] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The central extrusion assembly 401 includes a transverse slide groove 4011 opened on the top of the workbench 2 and a slide rod 4012 slidably connected in the transverse slide groove 4011, and a detachable extrusion pulley 4013 for extruding the metal tube 3 is rotatably installed on the top of the slide rod 4012.

[0032] See also Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6 Two longitudinal slide grooves 4014 are symmetrically arranged on the top of the workbench 2, and a second slide rod 4015 is slidably connected in the longitudinal slide groove 4014. A contact pulley 4016 is rotatably installed on the top of the second slide rod 4015, and a limiting disc 4017 is fixedly installed on the top of the contact pulley 4016. The limiting disc 4017 limits the metal tube 3 and prevents it from deflecting during the extrusion process of the metal tube 3.

[0033] See also Figure 2 , Figure 3 and Figure 4 The driving assembly 402 includes a fixing frame 4021 fixedly mounted on the bottom of the workbench 2 and a hydraulic cylinder 4022 fixedly mounted on the right side of the fixing frame 4021, and a driving plate 4023 fixedly mounted on the output end of the hydraulic cylinder 4022 and fixedly connected to the bottom end of the slide bar 4012.

[0034] When used, the metal tube 3 to be bent is placed on the top of the workbench 2, and is brought into contact with the two abutting pulleys 4016 and the auxiliary extrusion assembly 501, and the middle section of the metal tube 3 is aligned with the detachable extrusion pulley 4013 (such as Figure 1 As shown), then, the hydraulic cylinder 4022 is started, and the output end of the hydraulic cylinder 4022 contracts to drive the driving plate 4023 to move rightward, thereby pulling the slide bar 4012 to move rightward along the horizontal slide groove 4011, and then driving the detachable extrusion pulley 4013 to move rightward and squeeze the metal tube 3 through the slide bar 4012, so that the metal tube 3 gradually bends and deforms, and the front and rear ends of the metal tube 3 gradually bend to the left. At the same time, in the process of the detachable extrusion pulley 4013 moving to the right to extrude the metal tube 3, the auxiliary extrusion assembly 501 will move synchronously, and apply a lateral pressure opposite to the extrusion force of the detachable extrusion pulley 4013 to the metal tube 3 to assist the bending of the metal tube 3 until the metal tube 3 forms a U shape, and the bending operation is completed.

[0035] After the bending is completed, the output end of the hydraulic cylinder 4022 stops contracting and maintains the position for a period of time. By maintaining the position of the output end of the hydraulic cylinder 4022 unchanged, the metal tube 3 can be given enough time to adapt to the new shape, so that a small reset deformation will not occur due to elastic recovery, thereby reducing the dimensional error caused by rapid rebound, thereby improving the bending accuracy. For mass production, maintaining pressure for a period of time can also ensure that the bending angle and shape of each metal tube 3 are consistent, thereby improving the mass production accuracy and consistency of the metal tube 3.

[0036] After the output end of the hydraulic cylinder 4022 stops contracting and maintains it for a period of time, the output end of the hydraulic cylinder 4022 is controlled to push the driving plate 4023 to move to the left, thereby pushing the slide bar 4012 to move to the left along the horizontal slide groove 4011, and then driving the detachable extrusion pulley 4013 to move to the left through the slide bar 4012 and release the extrusion on the metal tube 3. At the same time, in the process of the detachable extrusion pulley 4013 moving to the left and resetting, the auxiliary extrusion assembly 501 will move synchronously to release the lateral pressure applied to the metal tube 3, so as to take out the bent metal tube 3.

[0037] See also Figure 2 , Figure 3 , Figure 4 and Figure 5 The auxiliary extrusion assembly 501 includes two inclined grooves 5011 opened on the top of the workbench 2 and symmetrical in front and back, and a sliding sleeve rod 5012 slidably connected in the inclined grooves 5011, and a side pressure pulley 5013 is rotatably installed on the top of the sliding sleeve rod 5012. A T-shaped slide groove 5014 is opened at the bottom of the workbench 2, and an articulated frame 5016 is slidably connected in the T-shaped slide groove 5014 through a T-shaped slider 5015. Two connecting rods 5017 are hinged on the articulated frame 5016, and the other ends of the two connecting rods 5017 are respectively hinged to the bottom ends of the two sliding sleeve rods 5012. Since the abutting pulley 4016 itself has a diameter, in order to compensate for the diameter of the abutting pulley 4016 and to adapt to the adjustment of the spacing of the abutting pulley 4016, the spacing at the left ends of the front and rear two inclined grooves 5011 is set to be smaller than the maximum spacing of the front and rear two longitudinal slide grooves 4014.

[0038] See also Figure 2 , Figure 3 , Figure 4 and Figure 5 The control component 502 includes two driving racks 5022 fixedly installed on the front and rear sides of the driving plate 4023 and symmetrical to each other, and two rotating gears 5021 symmetrically installed on the bottom of the workbench 2 and meshing with the corresponding driving racks 5022. Two driven racks 5023 symmetrically installed on the bottom of the articulated frame 5016 and meshing with the corresponding rotating gears 5021 are fixedly installed.

[0039] When in use, the output end of the hydraulic cylinder 4022 contracts and drives the driving plate 4023 to move to the right, and at the same time, drives the two driving racks 5022 to move to the right and mesh with the corresponding rotating gear 5021, thereby driving the rotating gear 5021 to rotate and mesh with the corresponding driven rack 5023, and then drives the two driven racks 5023 to move synchronously to the left, so that the articulated frame 5016 moves leftward accordingly, thereby pulling the connecting rod 5017, driving the sliding sleeve rod 5012 to slide leftward along the inclined groove 5011, and then drives the two side pressure pulleys 5013 that conflict with the metal tube 3 to move synchronously to the left along the inclined groove 5011 and approach each other, and the side pressure pulley 5013 moves leftward. During the process, a lateral pressure opposite to the extrusion force of the detachable extrusion pulley 4013 can be applied to the metal tube 3 to assist the metal tube 3 in maintaining stability during bending and prevent the metal tube 3 from being offset or twisted during the bending process. At the same time, the bending radius of the metal tube 3 can be accurately controlled by moving the side pressure pulley 5013 to avoid errors in the bending curvature at both ends of the metal tube 3, thereby ensuring that each bending can achieve the same bending radius and curvature, thereby improving the bending accuracy and ensuring that the mass-produced metal tubes 3 have consistent quality. In addition, the movement of the side pressure pulley 5013 can ensure that the metal tube 3 is evenly stressed during the bending process, thereby avoiding deformation or damage of the metal tube 3 due to local excessive stress.

[0040] When the output end of the hydraulic cylinder 4022 pushes the driving plate 4023 to move to the left, it will drive the driving rack 5022, the rotating gear 5021 and the driven rack 5023 to cooperate to drive the articulated frame 5016 to move to the right, thereby pushing the connecting rod 5017, driving the sliding sleeve rod 5012 to slide to the right along the inclined groove 5011, and then driving the two side pressure pulleys 5013 that are in conflict with the metal tube 3 to move synchronously to the right along the inclined groove 5011 and disengage from the metal tube 3, so as to release the lateral pressure applied to the metal tube 3.

[0041] See also Figure 1 , Figure 2 , Figure 3 and Figure 6 The variable pitch unit 6 includes two fixed plates 601 fixedly installed at the bottom of the workbench 2 and a bidirectional screw rod 602 rotatably installed between the two fixed plates 601. The outer side of the bidirectional screw rod 602 is threadedly connected with two front and rear symmetrical adjustment blocks 603. The two adjustment blocks 603 are respectively fixedly connected to two sliding rods 4015. A driving motor 604 is fixedly installed on the front side of the front fixed plate 601. The front end of the bidirectional screw rod 602 slides through the front fixed plate 601 and is fixedly connected to the output shaft of the driving motor 604.

[0042] During specific use, when the metal tube 3 needs to be bent into different arcs, the drive motor 604 is started first. The output shaft of the drive motor 604 rotates to drive the bidirectional screw rod 602 to rotate, thereby driving the two adjustment blocks 603 threadedly connected to the bidirectional screw rod 602 to move closer to or away from each other, and then driving the two abutment pulleys 4016 to move closer to or away from each other, so as to achieve the spacing adjustment of the two abutment pulleys 4016. After the adjustment is completed, the detachable extrusion pulley 4013 is replaced according to the spacing between the two abutment pulleys 4016 and the diameter or width of the metal tube 3, so that metal tubes 3 of different specifications can be processed.

[0043] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. A hydraulic multifunctional metal material processing and bending device, characterized in that: include: A frame (1) and a workbench (2) fixedly mounted on the top of the frame (1) and used to place a metal tube (3); the workbench (2) is provided with an extrusion bending unit (4), a multi-point auxiliary bending unit (5) and a variable pitch unit (6); the extrusion bending unit (4) comprises a central extrusion component (401) and a driving component (402) used to drive the central extrusion component (401) to extrude the metal tube (3); the multi-point auxiliary bending unit (5) comprises an auxiliary extrusion component (501) and a control component (502) used to control the auxiliary extrusion component (501) to assist in extruding the metal tube (3); The auxiliary extrusion assembly (501) comprises two inclined grooves (5011) which are symmetrically arranged on the top of the workbench (2) and a sliding sleeve rod (5012) which is slidably connected to the inclined grooves (5011); a side pressure pulley (5013) is rotatably mounted on the top of the sliding sleeve rod (5012); a T-shaped sliding groove (5014) is arranged at the bottom of the workbench (2); a hinge frame (5016) is slidably connected to the T-shaped sliding groove (5014) via a T-shaped sliding block (5015); two connecting rods (5017) are hinged on the hinge frame (5016); the other ends of the two connecting rods (5017) are respectively hinged to the bottom ends of the two sliding sleeve rods (5012); The driving component (402) drives the central extrusion component (401) to extrude and bend the center of the metal tube (3). At the same time, during the extrusion process, the extrusion component drives the control component (502) to synchronously drive the two sliding sleeves (5012) to slide leftward along the inclined groove (5011). During the sliding process, the side pressure pulley (5013) is driven to press the metal tube (3) all the time as the metal tube (3) gradually bends, thereby bending the metal tube (3) into a U shape.

2. The hydraulic multifunctional metal material processing and bending device according to claim 1 is characterized in that: The central extrusion assembly (401) comprises a transverse slide groove (4011) provided on the top of the workbench (2) and a slide rod (4012) slidably connected in the transverse slide groove (4011); a detachable extrusion pulley (4013) for extruding the metal tube (3) is rotatably mounted on the top of the slide rod (4012).

3. The hydraulic multifunctional metal material processing and bending device according to claim 1 is characterized in that: The top of the workbench (2) is provided with two longitudinal sliding grooves (4014) which are symmetrical in front and back, and a second sliding rod (4015) is slidably connected in the longitudinal sliding groove (4014), and an abutting pulley (4016) is rotatably installed at the top of the second sliding rod (4015).

4. The hydraulic multifunctional metal material processing and bending device according to claim 2 is characterized in that: The driving assembly (402) comprises a fixing frame (4021) fixedly mounted on the bottom of the workbench (2) and a hydraulic cylinder (4022) fixedly mounted on the right side of the fixing frame (4021); a driving plate (4023) fixedly connected to the bottom end of the sliding rod (4012) is fixedly mounted on the output end of the hydraulic cylinder (4022).

5. The hydraulic multifunctional metal material processing and bending device according to claim 4 is characterized in that: The control assembly (502) comprises two driving racks (5022) fixedly mounted on the front and rear sides of the driving plate (4023) and symmetrical to each other, and two rotating gears (5021) symmetrically mounted on the bottom of the workbench (2) and meshing with the corresponding driving racks (5022).

6. The hydraulic multifunctional metal material processing and bending device according to claim 5, characterized in that: Two driven racks (5023) are fixedly mounted on the bottom of the articulated frame (5016) and are symmetrical in front and back and meshed with corresponding rotating gears (5021).

7. The hydraulic multifunctional metal material processing and bending device according to claim 3 is characterized in that: The variable pitch unit (6) comprises two fixed plates (601) fixedly mounted on the bottom of the workbench (2) and a bidirectional screw rod (602) rotatably mounted between the two fixed plates (601).

8. The hydraulic multifunctional metal material processing and bending device according to claim 7, characterized in that: The outer side of the bidirectional screw rod (602) is threadedly connected with two front-to-back symmetrical adjustment blocks (603), and the two adjustment blocks (603) are respectively fixedly connected to the two sliding rods (4015).

9. The hydraulic multifunctional metal material processing and bending device according to claim 8, characterized in that: A driving motor (604) is fixedly mounted on the front side of the front fixing plate (601), and the front end of the bidirectional screw rod (602) slides through the front fixing plate (601) and is fixedly connected to the output shaft of the driving motor (604).

10. The hydraulic multifunctional metal material processing and bending device according to claim 3, characterized in that: A limiting disc (4017) is fixedly mounted on the top of the abutting pulley (4016), and the limiting disc (4017) limits the position of the metal tube (3) and prevents it from deflecting during the process of extruding the metal tube (3).

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