A machine tool for processing metal tube bending equipment

Abstract

This invention relates to the technical field of forming and processing, and in particular to a machine tool for bending metal tubes. The machine tool includes a base plate with three support seats arranged in a triangular pattern. Each support seat has a rotating extrusion wheel. A long through groove is formed on the base plate, and the line connecting two of the three support seats serves as a reference line. By employing three extrusion wheels to extrude and bend the metal tube, the metal tube can be easily transformed from a straight line to an arc shape after passing through the three extrusion wheels. Furthermore, by adjusting the extrusion wheel's curvature, the metal tube can be processed from a straight line into a spiral shape, thus achieving a one-time forming process. When different specifications of metal tubes need to be processed, only the moving speed of the support seats and extrusion wheels on the long through groove needs to be adjusted, thereby greatly simplifying the processing method and reducing equipment costs.

Description

Technical Field

[0001] This invention relates to the technical field of forming and processing, and in particular to a machine tool for bending metal tubes. Background Technology

[0002] Metal pipe bending is the process of bending straight metal pipes into various shapes such as spiral pipes, coils, curved pipes, and heat-dissipating S-tubes to facilitate use and installation. Among them, the shape of the coil is a spiral shape similar to that of a mosquito coil. Since the curvature of the arc on the coil increases with the length of the coil, the shape of the coil is gradually changing. This type of pipe can only be directly shaped by molds during processing. When the shape or pitch of the coil changes, it is necessary to change to molds of other sizes. Therefore, the coil processing equipment has poor versatility and requires a large investment in purchasing molds. Summary of the Invention

[0003] To solve the above-mentioned technical problems, the present invention provides a machine tool for processing metal tube bending.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0005] A metal tube bending machine includes a base plate with three support seats arranged in a triangle. Each support seat is equipped with a rotatable extrusion wheel. A long through groove is formed on the base plate. The line connecting two of the three support seats is set as a reference line, and the midpoint of the reference line coincides with the extension line of the long through groove. The reference line is perpendicular to the long through groove. The remaining support seat is slidably installed in the long through groove.

[0006] The support seat in the long slot is equipped with a transmission mechanism, which can push the support seat to slide in the long slot, thereby adjusting the distance between the support seat and the baseline.

[0007] Even better, each support base has a vertically rotatable column inserted into it, the top of the column is connected to the extrusion wheel, thereby causing the extrusion wheel to rotate on the support base, and the bottom of the column extends to the bottom of the support base.

[0008] The transmission mechanism includes a first transmission wheel mounted on the outer wall of a column in a long slot, a second transmission wheel driven on the first transmission wheel, a first threaded rod on the second transmission wheel, the first threaded rod being connected to a support seat in the long slot via a first support plate, and the first threaded rod being rotatable on the first support plate. A motor seat is slidably mounted on the bottom of the base plate along the axis of the first threaded rod, and a motor is mounted on the bottom of the motor seat. The output end of the motor is connected to the first threaded rod. A threaded sleeve is mounted on the bottom of the base plate, and the first threaded rod passes through the threaded sleeve and is threadedly connected to each other.

[0009] More preferably, the first transmission wheel slides vertically on the column, and the outer wall of the column is provided with a ridge that slides through the first transmission wheel. A first adjustment mechanism is provided between the first transmission wheel and the support base. The first adjustment mechanism can adjust the height position of the first transmission wheel on the column, thereby adjusting the transmission ratio between the first transmission wheel and the second transmission wheel.

[0010] More preferably, the first adjustment mechanism includes a second support plate fixed on the side wall of the support seat on the long through groove, a movable frame is slidably provided on the second support plate, an annular groove is provided in the middle of the outer circumference of the first transmission wheel, a retaining ring is rotatably fitted in the groove, and the movable frame is fixedly connected to the retaining ring.

[0011] A second threaded rod is rotatably provided on the outer wall of the second support plate. The second threaded rod passes through the movable frame and is threadedly connected. The second threaded rod and the movable frame are locked together by a lock nut.

[0012] More preferably, the extrusion wheel is composed of multiple turntables, which are coaxial and arranged vertically. The outer wall cross-section of the multiple turntables forms an arc shape. A second adjustment mechanism is provided on the column, which can adjust the distance between two adjacent turntables.

[0013] More preferably, the second adjustment mechanism includes a sliding column installed on each turntable, and the diameter of the sliding columns on the multiple turntables on the extrusion wheel increases sequentially from top to bottom. The multiple sliding columns are slidably connected to each other, and the cross-section of each sliding column is polygonal. The outermost sliding column passes through the column and is fixedly connected to each other.

[0014] A third support plate is horizontally fixed on the outermost sliding column at the bottom of the column. A horizontal plate is horizontally fixed on the outer wall of each remaining sliding column. A cylinder and an adjusting plate are rotatably mounted at the bottom of the third support plate. The extended end of the cylinder is rotatably connected to the adjusting plate. Multiple sliding sleeves are slidably mounted on the adjusting plate. The horizontal plate is rotatably connected to the sliding sleeves.

[0015] More preferably, a movable stage is slidably disposed on the upper surface of the base plate, and the movable stage is connected to the support seat on the long through groove by a connecting plate, and the upper surface of the movable stage is set as an inclined surface.

[0016] More preferably, a side plate is vertically fixed on the side wall of the moving platform, and multiple pressure rollers are rotatably arranged on the side plate, with the multiple pressure rollers on the same horizontal plane.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: by using three extrusion rollers to extrude and bend the metal tube, the metal tube can be easily transformed from a straight shape to an arc shape after passing through the three extrusion rollers. Furthermore, by adjusting the extrusion arc of the metal tube with the extrusion rollers, the metal tube can be processed from a straight shape to a vortex shape, thereby realizing a one-time forming process for the metal tube. When it is necessary to process metal tubes of different specifications, it is only necessary to adjust the moving speed of the support seat on the long through groove and the extrusion rollers, thereby greatly simplifying the processing method and reducing equipment cost. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the present invention;

[0020] Figure 2 yes Figure 1 A schematic diagram of the structure viewed from below;

[0021] Figure 3 yes Figure 2 Enlarged structural diagram of the central column;

[0022] Figure 4 yes Figure 3 Enlarged schematic diagram of the first transmission wheel in the middle;

[0023] The following are labels in the attached diagram: 1. Base plate; 2. Support seat; 3. Extrusion roller; 4. Long through groove; 5. Column; 6. First transmission wheel; 7. Second transmission wheel; 8. First threaded rod; 9. First support plate; 10. Motor base; 11. Motor; 12. Screw sleeve; 13. Second support plate; 14. Moving frame; 15. Snap ring; 16. Second threaded rod; 17. Lock nut; 18. Sliding column; 19. Third support plate; 20. Cylinder; 21. Adjusting plate; 22. Sliding sleeve; 23. Horizontal plate; 24. Moving table; 25. Connecting plate; 26. Side plate; 27. Pressure roller. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0025] In the description of this invention, it should be noted that the orientations or positional relationships indicated by terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inner", and "outer" are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0026] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. This embodiment is written in a progressive manner.

[0027] like Figures 1 to 4 As shown, a metal tube bending machine according to the present invention includes a base plate 1, on which three support seats 2 are provided. The three support seats 2 are arranged in a triangle. Each support seat 2 is rotatably provided with an extrusion wheel 3. A long through groove 4 is opened on the base plate 1. The line connecting two of the three support seats 2 is set as a reference line, and the midpoint of the reference line coincides with the extension line of the long through groove 4. The reference line is perpendicular to the long through groove 4. The remaining support seat 2 is slidably installed in the long through groove 4.

[0028] The support seat 2 in the long groove 4 is equipped with a transmission mechanism, which can push the support seat 2 to slide in the long groove 4, thereby adjusting the distance between the support seat 2 and the baseline.

[0029] Specifically, during the processing of the metal tube, one end of the metal tube is passed through the gap between three extrusion rollers 3. The extrusion rollers 3 on the long through groove 4 are close to the baseline, thus pushing the metal tube to bend. By rotating the extrusion rollers 3 on the long through groove 4, the metal tube can be transported between the three extrusion rollers 3 through friction. Because the metal tube is squeezed by the three extrusion rollers 3, the metal tube is arc-shaped when it is output. As the metal tube is continuously output, the transmission mechanism pushes the support seat 2 in the long through groove 4 to move, thereby adjusting the distance between the extrusion rollers 3 on the long through groove 4 and the baseline, that is, the curvature of the metal tube continuously increases. Thus, during the continuous arc bending process of the metal tube, the curvature of the metal tube continuously increases, thereby gradually transforming the metal tube from a straight shape to a vortex shape, realizing the rapid bending processing of the metal tube. At the same time, when it is necessary to process coils of different sizes, it is only necessary to adjust the moving speed of the support seat 2 in the long through groove 4 driven by the transmission mechanism, thus realizing the bending processing of metal tubes of different specifications.

[0030] In actual use, the long through groove 4 can pass through the baseline, so that the extrusion roller 3 on the long through groove 4 can move between the two extrusion rollers 3 on the baseline.

[0031] By employing a processing method that uses three extrusion rollers 3 to extrude and bend the metal tube, the metal tube can be easily transformed from a straight shape to an arc shape after passing through the three extrusion rollers 3. Furthermore, by adjusting the extrusion arc of the metal tube with the extrusion rollers 3, the metal tube can be processed from a straight shape into a vortex shape, thus realizing a one-time forming process for the metal tube. When it is necessary to process metal tubes of different specifications, it is only necessary to adjust the moving speed of the support seat 2 on the long through groove 4 and the extrusion rollers 3, thereby greatly simplifying the processing method and reducing equipment cost.

[0032] More preferably, each support 2 has a vertically rotatable column 5 inserted into it, the top of the column 5 is connected to the extrusion wheel 3, thereby causing the extrusion wheel 3 to rotate on the support 2, and the bottom of the column 5 extends to the bottom of the support 2.

[0033] The transmission mechanism includes a first transmission wheel 6 mounted on the outer wall of a column 5 on a long through groove 4, a second transmission wheel 7 driven on the first transmission wheel 6, a first threaded rod 8 mounted on the second transmission wheel 7, the first threaded rod 8 being connected to a support seat 2 on the long through groove 4 via a first support plate 9, and the first threaded rod 8 being able to rotate on the first support plate 9, a motor seat 10 being slidably mounted on the bottom of a base plate 1 along the axial direction of the first threaded rod 8, a motor 11 being mounted on the bottom of the motor seat 10, the output end of the motor 11 being drivenly connected to the first threaded rod 8, a threaded sleeve 12 being mounted on the bottom of the base plate 1, and the first threaded rod 8 passing through the threaded sleeve 12 and being threadedly connected to each other.

[0034] Specifically, the first support plate 9 can connect and support the first threaded rod 8 and the support seat 2. The motor 11 can drive the first threaded rod 8 to rotate. Since the first threaded rod 8 is threadedly connected to the threaded sleeve 12, the first threaded rod 8 can move laterally on the threaded sleeve 12. At this time, the first threaded rod 8 can push the support seat 2 on the long through groove 4 to move through the first support plate 9, thereby adjusting the position of the support seat 2. At the same time, the first threaded rod 8 can drive the second transmission wheel 7 to rotate. The second transmission wheel 7 can drive the column 5 to rotate through the first transmission wheel 6, thereby driving the extrusion wheel 3 to rotate. The extrusion wheel 3 can push the metal tube to be continuously conveyed, thereby realizing the synchronous adjustment of the metal tube conveying and its extrusion arc. When the first threaded rod 8 moves, it can drive the motor seat 10 to slide at the bottom of the base plate 1 through the motor 11.

[0035] More preferably, the first transmission wheel 6 slides vertically on the column 5, and the outer wall of the column 5 is provided with a ridge that slides through the first transmission wheel 6. A first adjustment mechanism is provided between the first transmission wheel 6 and the support base 2. The first adjustment mechanism can adjust the height position of the first transmission wheel 6 on the column 5, thereby adjusting the transmission ratio between the first transmission wheel 6 and the second transmission wheel 7.

[0036] Specifically, the first drive wheel 6 and the second drive wheel 7 adopt a friction drive method. When different specifications of coils need to be processed, it is only necessary to adjust the position of the first drive wheel 6 on the column 5, that is, adjust the transmission ratio between the first drive wheel 6 and the second drive wheel 7, thereby adjusting the moving speed of the extrusion wheel 3 on the long through groove 4. The edge on the column 5 can ensure that the column 5 and the first drive wheel 6 rotate synchronously.

[0037] More preferably, the first adjustment mechanism includes a second support plate 13 fixed on the side wall of the support seat 2 on the long through groove 4, a movable frame 14 is vertically slidably provided on the second support plate 13, and an annular groove is opened in the middle of the outer circumference of the first transmission wheel 6. A retaining ring 15 is rotatably fitted in the groove, and the movable frame 14 is fixedly connected to the retaining ring 15.

[0038] A second threaded rod 16 is rotatably provided on the outer side wall of the second support plate 13. The second threaded rod 16 passes through the movable frame 14 and is threadedly connected. The second threaded rod 16 and the movable frame 14 are locked together by a lock nut 17.

[0039] Specifically, unlock the lock nut 17 and rotate the second threaded rod 16. Since the second threaded rod 16 is threadedly connected to the movable frame 14, the second threaded rod 16 can adjust the vertical position of the movable frame 14. The movable frame 14 can drive the first transmission wheel 6 to move up and down through the retaining ring 15, thereby adjusting the transmission ratio between the first transmission wheel 6 and the second transmission wheel 7. Since the retaining ring 15 is hidden in the retaining groove, it avoids contact between the retaining ring 15 and the second transmission wheel 7, ensuring normal transmission between the first transmission wheel 6 and the second transmission wheel 7. The lock nut 17 can fasten and lock the second threaded rod 16.

[0040] More preferably, the extrusion wheel 3 is composed of multiple turntables, which are coaxial and arranged vertically. The outer wall cross-section of the multiple turntables forms an arc shape. A second adjustment mechanism is provided on the column 5, which can adjust the distance between two adjacent turntables.

[0041] Specifically, since the outer wall cross-sections of multiple turntables form an arc shape, the outer wall cross-section of the extrusion roller 3 is also arc-shaped. This makes it easier for the extrusion roller 3 to hold the metal tube in place and prevents the extrusion roller 3 from crushing the metal tube. When it is necessary to bend metal tubes of different diameters, the size of the arc of the outer wall cross-section of the extrusion roller 3 can be adjusted by adjusting the distance between two adjacent turntables through the second adjustment mechanism. This ensures that when the extrusion roller 3 contacts the metal tube, it can achieve a multi-point contact effect with the metal tube through the multiple turntables on the extrusion roller 3, thereby avoiding crushing the metal tube while ensuring that the extrusion roller 3 can bend metal tubes of different diameters.

[0042] More preferably, the second adjustment mechanism includes a sliding column 18 installed on each turntable, and the diameter of the sliding columns 18 on the multiple turntables on the extrusion wheel 3 increases sequentially from top to bottom. The multiple sliding columns 18 are slidably connected to each other, and the cross section of each sliding column 18 is polygonal. The outermost sliding column 18 passes through the column 5 and is fixedly connected to each other.

[0043] A third support plate 19 is horizontally fixed on the outermost sliding column 18 at the bottom of column 5. A horizontal plate 23 is horizontally fixed on the outer wall of each remaining sliding column 18. A cylinder 20 and an adjusting plate 21 are rotatably mounted on the bottom of the third support plate 19. The extended end of the cylinder 20 is rotatably connected to the adjusting plate 21. Multiple sliding sleeves 22 are slidably mounted on the adjusting plate 21. The horizontal plate 23 is rotatably connected to the sliding sleeves 22.

[0044] Specifically, the outermost sliding column 18 supports the remaining multiple sliding columns 18. Since the outermost sliding column 18 is connected to the bottommost turntable on the extrusion roller 3, the turntable is fixed in position on the column 5. When it is necessary to adjust the distance between multiple turntables, the cylinder 20 extends and retracts and pushes the adjusting plate 21 to tilt and rotate. At this time, the tilt angle of the adjusting plate 21 changes. The adjusting plate 21 can push the sliding column 18 up and down through the sliding sleeve 22 and the horizontal plate 23, thereby synchronously adjusting the positional relationship between multiple sliding columns 18, that is, adjusting the distance between two adjacent turntables.

[0045] Since the adjustment of multiple sliding columns 18 is achieved by adjusting the tilt angle of the adjustment plate 21, the distance between two adjacent turntables can be kept equal, thus achieving the purpose of equidistant adjustment.

[0046] More preferably, a movable platform 24 is slidably disposed on the upper surface of the base plate 1, and the movable platform 24 is connected to the support seat 2 on the long through groove 4 through a connecting plate 25, and the upper surface of the movable platform 24 is set as an inclined surface.

[0047] Specifically, when the three extrusion rollers 3 extrude and deform the metal tube, the metal tube moves toward the inclined plane of the moving table 24 and moves upward through the guiding action of the inclined plane. This causes the bent part of the metal tube to rotate above the extrusion rollers 3, thereby preventing the continuously output metal tube from colliding with the extrusion rollers 3 and interfering with the normal conveying of the unprocessed straight metal tube. When the support seat 2 on the long through groove 4 moves, it can push the moving table 24 to move synchronously through the connecting plate 25.

[0048] More preferably, a side plate 26 is vertically fixed on the side wall of the moving platform 24, and a plurality of pressure rollers 27 are rotatably arranged on the side plate 26, with the plurality of pressure rollers 27 on the same horizontal plane.

[0049] Specifically, the metal tube guided by the inclined surface of the moving table 24 is inclined and conveyed upward to the space between the moving table 24 and the pressure roller 27. The pressure roller 27 can flatten the inclined metal tube during conveyance, thereby preventing the metal tube from deforming in the vertical direction when it is continuously guided by the inclined surface, which facilitates the shaping of the metal tube.

[0050] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A machine tool for processing metal tube bending, characterized in that, Includes a base plate (1), on which are provided three support seats (2), which are arranged in a triangular pattern. Each support seat (2) is provided with a rotating extrusion wheel (3). A long through groove (4) is provided on the base plate (1). The line connecting two of the three support seats (2) is set as the baseline, and the midpoint of the baseline coincides with the extension line of the long through groove (4). The baseline is perpendicular to the long through groove (4). The remaining support seat (2) is slidably installed in the long through groove (4). Among them, a transmission mechanism is provided on the support seat (2) in the long through groove (4). The transmission mechanism can push the support seat (2) to slide in the long through groove (4), thereby adjusting the distance between the support seat (2) and the baseline. Each support (2) has a vertically rotating column (5) inserted into it. The top of the column (5) is connected to the extrusion wheel (3), thereby causing the extrusion wheel (3) to rotate on the support (2). The bottom of the column (5) extends to the bottom of the support (2). The transmission mechanism includes a first transmission wheel (6) on the outer wall of a column (5) on a long through groove (4), a second transmission wheel (7) on the first transmission wheel (6), a first threaded rod (8) on the second transmission wheel (7), the first threaded rod (8) and the support seat (2) on the long through groove (4) are connected by a first support plate (9), and the first threaded rod (8) can rotate on the first support plate (9). A motor seat (10) is slidably provided at the bottom of the base plate (1) along the axis of the first threaded rod (8). A motor (11) is provided at the bottom of the motor seat (10). The output end of the motor (11) is connected to the first threaded rod (8) in a transmission connection. A screw sleeve (12) is provided at the bottom of the base plate (1). The first threaded rod (8) passes through the screw sleeve (12) and is threadedly connected to each other. The first transmission wheel (6) slides vertically on the column (5), and the outer wall of the column (5) is provided with a ridge that slides through the first transmission wheel (6). A first adjustment mechanism is provided between the first transmission wheel (6) and the support base (2). The first adjustment mechanism can adjust the height position of the first transmission wheel (6) on the column (5), thereby adjusting the transmission ratio between the first transmission wheel (6) and the second transmission wheel (7). The first adjustment mechanism includes a second support plate (13) fixed on the side wall of the support seat (2) on the long through groove (4), a movable frame (14) is vertically slidably provided on the second support plate (13), an annular slot is provided in the middle of the outer circumference of the first transmission wheel (6), and a retaining ring (15) is rotatably fitted in the slot. The movable frame (14) and the retaining ring (15) are fixedly connected. A second threaded rod (16) is rotatably provided on the outer side wall of the second support plate (13). The second threaded rod (16) passes through the movable frame (14) and is threadedly connected. The second threaded rod (16) and the movable frame (14) are locked together by a lock nut (17).

2. The metal tube bending machine as described in claim 1, characterized in that, The extrusion wheel (3) is composed of multiple turntables, which are coaxial and arranged vertically. The outer wall cross-section of the multiple turntables forms an arc shape. A second adjustment mechanism is provided on the column (5), which can adjust the distance between two adjacent turntables.

3. The metal tube bending machine as described in claim 2, characterized in that, The second adjustment mechanism includes a sliding column (18) installed on each turntable, and the diameter of the sliding columns (18) on the multiple turntables on the extrusion wheel (3) increases from top to bottom. The multiple sliding columns (18) are slidably connected to each other, and the cross section of each sliding column (18) is polygonal. The outermost sliding column (18) passes through the column (5) and is fixedly connected to each other. A third support plate (19) is horizontally fixed on the outer wall of the outermost sliding column (18) at the bottom of the column (5). A horizontal plate (23) is horizontally fixed on the outer wall of each remaining sliding column (18). A cylinder (20) and an adjusting plate (21) are rotatably mounted on the bottom of the third support plate (19). The extended end of the cylinder (20) is rotatably connected to the adjusting plate (21). Multiple sliding sleeves (22) are slidably mounted on the adjusting plate (21). The horizontal plate (23) is rotatably connected to the sliding sleeves (22).

4. The metal tube bending machine as described in claim 3, characterized in that, A movable platform (24) is slidably disposed on the upper surface of the base plate (1). The movable platform (24) is connected to the support seat (2) on the long through groove (4) by a connecting plate (25). The upper surface of the movable platform (24) is set as an inclined surface.

5. The metal tube bending machine as described in claim 4, characterized in that, A side plate (26) is vertically fixed on the side wall of the moving platform (24), and multiple pressure rollers (27) are rotatably arranged on the side plate (26), with the multiple pressure rollers (27) on the same horizontal plane.

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