Bending device for metal bar processing

Abstract

The application discloses a bending device for metal bar processing, and relates to the technical field of metal bar processing.The bending device comprises a base, the base is provided with a first bending die and a second bending die, the first bending die and the second bending die are both provided with arc surfaces, the arc surfaces of the first bending die and the second bending die are different in bending degree, the base is provided with two positioning wheels located on the two sides of a bar, the base is provided with a driving block, the base is provided with a driving mechanism, the driving block is provided with a clamping mechanism used for clamping the end of the bar, and the base is further provided with a control module electrically connected to the driving mechanism and the clamping mechanism, wherein the control module is configured to: when receiving preset bar processing trigger information, acquiring bar parameters and bar processing process parameters respectively; and based on the bar parameters and the processing process parameters, executing a preset process of driving the bar to move in a direction. The application has the effect that the bending radius of the metal material can be conveniently adjusted.

Description

Technical Field

[0001] This application relates to the field of metal bar processing technology, and in particular to a bending device for metal bar processing. Background Technology

[0002] Metal rods are solid metal products with a uniform cross-section along their length. Common materials for metal rods include iron, steel, and aluminum, with iron and steel metal rods being the most widely used. Currently, there is a need to use some bent metal rods, but the rods available on the market are generally straight and need to be bent before they can be used.

[0003] Patent CN212598125U discloses a bending device for processing metal rods, relating to the field of metal processing technology. The device includes a worktable with supporting legs fixedly mounted on its bottom surface. A hydraulic press and a fixing device are fixedly mounted on the top surface of the worktable. A long pipe is movably connected to the output end of the hydraulic press. A bending device is fixedly mounted on the right end of the long pipe. The fixing device includes a rotating rod with rollers sleeved on its surface. A first fixing block is fixedly mounted on the top surface of the rotating rod, and a second fixing block is sleeved on the bottom end of the rotating rod. A first rectangular groove is formed on the top surface of the first fixing block, serving to limit the movement of the metal rod.

[0004] However, the bending device has limitations in the bending radius of the metal rod. When it is necessary to change the bending radius, the only way is to disassemble and replace the mold, which is very inconvenient. Summary of the Invention

[0005] To facilitate the adjustment of the bending curvature of metal materials, this application provides a bending device for processing metal rods.

[0006] This application provides a bending device for processing metal bars, which adopts the following technical solution:

[0007] A bending device for processing metal bars includes a base, on which a first bending die and a second bending die are provided. Both the first and second bending dies have arc-shaped surfaces with different degrees of curvature. A gap is provided between the first and second bending dies for the bar to pass through. The base has two positioning wheels located on both sides of the bar. The base also has a drive block and a drive mechanism for moving the drive block. The drive block has a clamping mechanism for holding the end of the bar. The device further includes a control module electrically connected to the drive mechanism. The control module is configured as follows:

[0008] When a preset bar stock processing trigger message is received, the bar stock parameters and bar stock processing parameters are obtained respectively. The bar stock parameters include material and bending radius, and the processing parameters include bending angle and bending speed.

[0009] Based on the bar stock parameters and processing parameters, a preset process is executed to drive the bar stock in the correct direction.

[0010] Optionally, the first bending mold is rotatably connected to the base, the base is fixedly connected to a rotating motor, the output shaft of the rotating motor is fixedly connected to the first bending mold, and a protrusion is fixedly connected to one end of the first bending mold away from the arc surface, the width of the protrusion gradually decreasing along the direction away from the first bending mold.

[0011] Optionally, the base is slidably connected to an adjusting block, the sliding direction of the adjusting block is perpendicular to the bar feeding direction, the second bending die is fixedly connected to the adjusting block, the base is fixedly connected to a cylinder, and the cylinder output shaft is fixedly connected to the adjusting block.

[0012] Optionally, the clamping mechanism includes fixed frames that are fixedly connected to both ends of the drive block, a clamping block that is slidably connected to the drive block, the clamping block being located between the two fixed frames, and a screw threaded through each of the fixed frames, one end of which is rotatably connected to the side wall of the clamping block.

[0013] Optionally, the driving mechanism includes a hydraulic cylinder fixedly connected to the base, the output shaft of the hydraulic cylinder being fixedly connected to a push-pull block, the push-pull block being fixedly connected to two base columns, and the distance between the two base columns being greater than the diameter of the bar stock.

[0014] Optionally, a pressure detection unit is fixedly connected to the inner wall of the first bending die, and a heating unit is provided on the base. The pressure detection unit is used to detect the pressure on the first bending die and output a pressure detection signal; the heating unit is used to heat the bar stock; and the control module is electrically connected to the pressure detection unit and the heating unit respectively. The control module is configured as follows:

[0015] Receive pressure detection signals;

[0016] When the pressure detection signal meets the preset heating conditions, the preset heating process is executed.

[0017] Optionally, the heating process includes:

[0018] Based on the pressure detection signal, the heating temperature of the heating unit is controlled according to the preset logical relationship that the pressure and temperature are proportional.

[0019] When the heating temperature meets the preset maximum temperature threshold, a stop heating control command is output.

[0020] Optionally, the heating process further includes:

[0021] Call the bar stock parameters;

[0022] Based on the bar stock parameters, a preset database is searched to obtain the matching bar stock heat resistance temperature;

[0023] The maximum temperature threshold is updated based on the matched bar stock heat resistance temperature, wherein the update rule for the maximum temperature threshold is preset.

[0024] Optionally, the heating unit includes an electromagnetic controller, an induction heating coil, and a power supply. The induction heating coil is fixedly connected to the base on the side where the first bending die is fed in, and the bar stock passes through the induction heating coil. The power supply is electrically connected to the electromagnetic controller, and the electromagnetic controller is electrically connected to the induction heating coil.

[0025] In summary, this application includes at least one of the following beneficial technical effects: by setting a first bending die and a second bending die, and the two having different degrees of curvature, based on the parameters of the bar stock and the processing parameters, the drive mechanism is controlled to move the bar stock toward the first bending die or the second bending die, thereby facilitating the bending of the bar stock into different degrees of curvature and improving work efficiency. Attached Figure Description

[0026] Figure 1 This is a cross-sectional view of the overall structure of this application.

[0027] Figure 2 yes Figure 1 A magnified view of part A in the diagram.

[0028] Explanation of reference numerals in the attached drawings: 1. Base; 2. First bending mold; 3. Second bending mold; 4. Positioning wheel; 5. Drive block; 6. Drive mechanism; 7. Clamping mechanism; 8. Rotary motor; 21. Protrusion; 11. Adjusting block; 12. Cylinder; 71. Fixing frame; 72. Clamping block; 73. Screw; 61. Hydraulic cylinder; 62. Slider; 63. Slide groove; 9. Heating unit. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.

[0030] This application discloses a bending device for processing metal rods.

[0031] Reference Figure 1A bending device for processing metal bars includes a base 1, on which a first bending die 2 and a second bending die 3 are provided. Both the first bending die 2 and the second bending die 3 have arc-shaped surfaces with different degrees of curvature. A gap is left between the first bending die 2 and the second bending die 3 for the bar to pass through. Two positioning wheels 4 for guiding and positioning the bar are rotatably connected to the base 1. A gap is left between the two positioning wheels 4 for the bar to pass through. The two positioning wheels 4 are located on both sides of the bar and are detachably connected to the base 1. A drive block 5 is provided on the side of the base 1 opposite to the positioning wheels 4, where the first bending die 2 and the second bending die 3 are located. The base 1 is provided with a drive mechanism 6 for moving the drive block 5. The drive block 5 is provided with a clamping mechanism 7 for clamping the bar. The device also includes a control module electrically connected to the drive mechanism 6.

[0032] Reference Figure 1 The first bending die 2 is rotatably connected to the base 1 via bearings. The base 1 is fixedly connected to a rotating motor 8 via bolts. The rotating motor 8 is a servo motor and is connected to the control module via a servo controller. The output shaft of the rotating motor 8 is coaxially fixedly connected to the first bending die 2. The end of the first bending die 2 away from the arc surface is integrally formed with a protrusion 21. The width of the protrusion 21 gradually decreases along the direction away from the first bending die 2, and the end of the protrusion 21 away from the arc surface of the first bending die 2 is rounded. By rotating the first bending die 2 via the rotating motor 8, the arc surface or the protrusion 21 of the first bending die 2 is made to face the bar stock, thereby enabling the bar stock to be bent at different degrees.

[0033] Reference Figure 1 The base 1 is slidably connected to an adjusting block 11, the sliding direction of which is perpendicular to the bar feeding direction, and the second bending die 3 is fixed to the adjusting block 11. The base 1 is fixedly connected to a cylinder 12 by bolts, and the output shaft of the cylinder 12 is fixedly connected to the side wall of the adjusting block 11. The position of the second bending die 3 can be adjusted by the cylinder 12.

[0034] Reference Figure 1 The clamping mechanism 7 includes fixed frames 71 welded to both ends of the drive block 5. The drive block 5 is slidably connected to a clamping block 72, which is located between the two fixed frames 71. A screw 73 is threaded through any fixed frame 71 along a transverse thread. One end of the screw 73 is rotatably connected to the side wall of the clamping block 72 through a bearing, so that it can be clamped against the end of the bar stock by the clamping block 72.

[0035] Reference Figure 1 and Figure 2The drive mechanism 6 includes a hydraulic cylinder 61 fixed to the base 1 by bolts. The output shaft of the hydraulic cylinder 61 is fixedly connected to a slider 62. The slider 62 has a T-shaped cross-section. The drive block 5 has a groove 63 on the side wall facing the hydraulic cylinder 61 for the slider 62 to slide. The inner end of the groove 63 is T-shaped. In order for the hydraulic cylinder 61 to smoothly drive the slider 62 to move the drive block 5, the part of the slider 62 that extends into the groove 63 is cylindrical. This allows the slider 62 to slide smoothly in the groove 63 and drive the drive block 5 to turn, thereby bending the bar.

[0036] In this embodiment, the control module is configured as follows:

[0037] When a preset bar stock processing trigger message is received, the bar stock parameters and bar stock processing parameters are obtained respectively. The bar stock parameters include material and bending radius, and the processing parameters include bending angle and bending speed. It can be understood that the material and bending radius of each batch of bar stock can be obtained from the manufacturer.

[0038] Based on the bar stock parameters and processing parameters, a preset process for driving the bar stock in the direction of travel is executed. Specifically, since the bending degrees of the first bending die 2 and the second bending die 3 are different, the preset process logic for driving the bar stock in the direction of travel includes: determining whether the first bending die 2 or the second bending die 3 can be matched according to the bar stock parameters and processing parameters, and whether the arc surface or the protrusion 21 of the first bending die 2 bends the bar stock, and controlling the drive mechanism 6 and the rotating motor 8 to perform corresponding actions, outputting an instruction to control the drive mechanism 6 to drive the drive block 5 to move the end of the bar stock toward the direction close to the first bending die 2 or the second bending die 3, so that the first bending die 2 or the second bending die 3 bends the bar stock.

[0039] Reference Figure 1In another embodiment of this application, a heating unit 9 is fixed to the base 1. In this embodiment, the heating unit 9 can be a high-frequency heating machine, including an electromagnetic controller, an induction heating coil, and a power supply. The induction heating coil is fixedly connected to the base 1 on the side where the first bending mold 2 is fed in. The bar material passes through the induction heating coil. The power supply is electrically connected to the electromagnetic controller. The basic working principle of the power supply is to rectify the externally supplied 50Hz AC power into high-voltage DC power, and then invert the DC power into high-frequency AC power through power devices (such as MOSFETs or IGBTs) and an LC oscillation circuit. Finally, a low-voltage high-frequency power supply is output through a high-frequency transformer. The electromagnetic controller is electrically connected to the induction heating coil. The electromagnetic controller is the core part of the high-frequency heating system and includes a chassis, a rectification system, an inverter system, a trigger control system, a protection system, a monitoring system, and a heat dissipation system. The function of the electromagnetic controller is to rectify, filter, and invert the power frequency AC power into high-frequency AC power. The induction heating coil is usually made of hollow copper tube and wound into a ring or other required shape. When a high-frequency, high-current passes through it, a strong alternating electromagnetic field is generated around the coil. This electromagnetic field can penetrate metal objects and rapidly heat the metal. Since the above technologies are all existing technologies, they will not be elaborated here.

[0040] Therefore, when the bar stock is fed, it is inserted into the induction heating coil. The induction heating coil heats the bar stock, which increases its plasticity, lowers the yield point, and reduces internal stress, making it easier to bend and form while reducing the occurrence of cracks.

[0041] The inner wall of the first bending mold 2 is embedded with a pressure detection unit (not shown in the figure) for detecting the pressure it receives. The pressure detection unit can be a pressure sensor. The control module is electrically connected to the pressure detection unit and the heating unit 9 respectively. The control module is configured as follows:

[0042] Receive pressure detection signals;

[0043] When the pressure detection signal meets the preset heating conditions, including the occurrence of the pressure detection signal, the preset heating process is executed.

[0044] The heating process includes: based on the pressure detection signal, controlling the heating temperature of the heating unit 9 according to the preset logical relationship that the pressure and temperature are proportional; it can be understood that the greater the pressure on the first bending die 2, the higher the heating temperature of the heating unit 9, so that the heating unit 9 can gradually heat the bar during the bending process.

[0045] When the heating temperature meets the preset maximum temperature threshold, a control command to stop heating is output.

[0046] In another embodiment of this application, the heating process further includes:

[0047] Call the bar stock parameters;

[0048] Based on the bar stock parameters, a preset database is searched to obtain the matching bar stock heat resistance temperature;

[0049] The maximum temperature threshold is updated based on the matched bar stock heat resistance temperature, wherein the update rule for the maximum temperature threshold is preset.

[0050] Understandably, the heat resistance temperatures corresponding to several commonly used bar materials are pre-stored in a preset database, and a material-temperature relationship data table is established. The heat resistance temperature corresponding to a material can be found by looking up the table, and this temperature is updated to the highest temperature threshold.

[0051] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A bending device for processing metal bars, characterized in that, The system includes a base (1), which is provided with a first bending mold (2) and a second bending mold (3). Both the first bending mold (2) and the second bending mold (3) are provided with arc-shaped surfaces, and the curvature of the arc-shaped surfaces of the first bending mold (2) and the second bending mold (3) is different. A gap is left between the first bending mold (2) and the second bending mold (3) for the bar to pass through. The base (1) is provided with two positioning wheels (4) located on both sides of the bar. The base (1) is provided with a drive block (5). The base (1) is provided with a drive mechanism (6) for driving the drive block (5) to move. The drive block (5) is provided with a clamping mechanism (7) for clamping the end of the bar. The system also includes a control module electrically connected to the drive mechanism (6). The control module is configured as follows: When a preset bar stock processing trigger message is received, the bar stock parameters and bar stock processing parameters are obtained respectively. The bar stock parameters include material and bending radius, and the processing parameters include bending angle and bending speed. Based on the bar stock parameters and processing parameters, a preset process for driving the bar stock in the direction of travel is executed; The first bending mold (2) is rotatably connected to the base (1), the base (1) is fixedly connected to the rotating motor (8), the output shaft of the rotating motor (8) is fixedly connected to the first bending mold (2), and a protrusion (21) is fixedly connected to one end of the first bending mold (2) away from the arc surface. The width of the protrusion (21) is gradually reduced along the direction away from the first bending mold (2). By rotating the motor (8) to rotate the first bending die (2), the arc surface or protrusion (21) of the first bending die (2) is directed toward the bar stock, thereby making the bending degree of the bar stock different. The base (1) is slidably connected to an adjusting block (11), the sliding direction of the adjusting block (11) is perpendicular to the feeding direction of the bar, the second bending mold (3) is fixedly connected to the adjusting block (11), the base (1) is fixedly connected to a cylinder (12), and the output shaft of the cylinder (12) is fixedly connected to the adjusting block (11); The clamping mechanism (7) includes a fixed frame (71) fixedly connected to both ends of the drive block (5), and a clamping block (72) slidably connected to the drive block (5). The clamping block (72) is located between the two fixed frames (71). A screw (73) is threaded through each of the fixed frames (71), and one end of the screw (73) is rotatably connected to the side wall of the clamping block (72). The driving mechanism (6) includes a hydraulic cylinder (61) fixedly connected to the base (1). The side wall of the driving block (5) is provided with a T-shaped groove (63). A slider (62) with a T-shaped cross section is slidably connected to the groove (63). The end of the slider (62) extending into the groove (63) is cylindrical. The output shaft of the hydraulic cylinder (61) is fixedly connected to one end of the slider (62) extending out of the groove (63), so that the slider (62) can slide in the groove (63) and drive the driving block (5) to turn, thereby bending the bar.

2. The bending device for processing metal bars according to claim 1, characterized in that, A pressure detection unit is fixedly connected to the inner wall of the first bending die (2), and a heating unit (9) is provided on the base (1). The pressure detection unit is used to detect the pressure on the first bending die (2) and output a pressure detection signal; the heating unit (9) is used to heat the bar stock. The control module is electrically connected to the pressure detection unit and the heating unit (9) respectively. The control module is configured as follows: Receive pressure detection signals; When the pressure detection signal meets the preset heating conditions, the preset heating process is executed.

3. The bending device for processing metal bars according to claim 2, characterized in that, The heating process includes: Based on the pressure detection signal, the heating temperature of the heating unit (9) is controlled according to the preset logical relationship that the pressure and temperature are proportional; When the heating temperature meets the preset maximum temperature threshold, a stop heating control command is output.

4. The bending device for processing metal bars according to claim 3, characterized in that, The heating process also includes: Call the bar stock parameters; Based on the bar stock parameters, a preset database is searched to obtain the matching bar stock heat resistance temperature; The maximum temperature threshold is updated based on the matched bar stock heat resistance temperature, wherein the update rule for the maximum temperature threshold is preset.

5. The bending device for processing metal bars according to claim 2, characterized in that, The heating unit (9) includes an electromagnetic controller, an induction heating coil, and a power supply. The induction heating coil is fixedly connected to the base (1) on the side where the first bending mold (2) is fed. The bar is passed through the induction heating coil. The power supply is electrically connected to the electromagnetic controller, and the electromagnetic controller is electrically connected to the induction heating coil.

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