A metal conduit rolling machine

Abstract

The application discloses a metal conduit rolling machine, which comprises a base, a rotating unit, a rolling head, a feeding unit and a clamping unit arranged on the base; the clamping unit is used for clamping and fixing a conduit to be processed; the rolling head is installed on the rotating unit, and the rotating unit is used for driving the rolling head to rotate; the feeding unit is used for driving the rolling head to move towards the end of the conduit clamped and fixed by the clamping unit; the rolling head comprises a mounting handle, a mounting block and a roller, and a pushing piece is fixed on the mounting handle. By adopting the above technical scheme, the roller sliding block is arranged on the rolling head; in the operation process, when the roller is fed to the rolling station, the mounting block is blocked by a die clamped by the clamping unit; when the radial position of the roller needs to be adjusted, the mounting handle can be pushed by the feeding unit, so that the mounting handle drives the pushing piece to move, thereby the wedge surface of the pushing piece pushes the roller sliding block to produce displacement in the radial direction, and the purpose of adjusting the position of the roller is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to a metal conduit rolling machine, belonging to the technical field of metal processing machinery. BACKGROUND

[0002] Pipe end processing equipment is generally used for processing the end of a metal conduit, so that the pipe end forms a flared or spherical protrusion to the radial outside, for example, a full-automatic pipe end processing machine disclosed in Chinese patent document CN109227140A, which includes a rotating unit, a processing unit, a feeding unit and a clamping unit, the clamping unit is used to clamp and fix the conduit to be processed, the rotating unit is used to drive the processing unit to rotate, and the feeding unit is used to drive the processing unit to move towards the end of the conduit clamped and fixed by the clamping unit.

[0003] The existing pipe end rolling machine has two main forming methods for rolling: one is to use a round bar with a rolling wave profile to perform circumferential motion on the inner wall of the conduit, and the shape of the rolling bar is used to push out the wave from the inner wall of the conduit, the rolling bar is adjusted eccentrically while rotating to achieve the purpose of rolling, this method has a complex main shaft structure, a set of centering structure is needed for adjustment, which causes the main shaft part to be relatively large in size, not suitable for processing of small bending radius conduits, in addition, the rolling bar itself does not rotate relative to the inner wall of the conduit, and is always in a high-speed friction state, so the service life of the rolling bar is relatively low, and the inner cavity of the conduit is prone to have a hair flip phenomenon; the other is to use two circular wheel dies to rotate along the conduit wall, one of the two circular wheel dies is a cam die placed inside the conduit, and the other is a concave die outside the conduit, the two wheels are subjected to a clamping force, so that the material of the conduit wall is pressed into the gap between the two wheel dies, after the wheel dies rotate several times along the conduit, the conduit is processed and formed, since the conduit is always subjected to single-point stress during processing, the profile ellipticity of the processed and formed conduit is relatively large, and this method can only process seamless pipes, and for welded steel pipes, the rolling may not be in place at the weld. SUMMARY

[0004] Therefore, the purpose of the present application is to provide a new type of metal conduit rolling machine, which can be used for pipe end processing of metal conduits, and the radial position of the rolling wheel can be adjusted without complex main shaft structure.

[0005] In order to achieve the above object, the metal conduit rolling machine comprises a base, a rotating unit, a rolling head, a feeding unit and a clamping unit arranged on the base; the clamping unit is used for clamping and fixing the conduit to be processed; the rotating unit is used for driving the rolling head to rotate; the feeding unit is used for driving the rolling head to move towards the end of the conduit clamped and fixed by the clamping unit; the rolling head comprises a mounting handle, a mounting block and a roller; a propelling element is fixed on the mounting handle; the mounting block is mounted on the propelling element and can slide on the propelling element, so as to approach or move away from the mounting handle and can rotate synchronously with the mounting handle; the roller is mounted on a roller sliding block through a roller shaft; the roller sliding block is mounted in a sliding groove on the mounting block and can move in the sliding groove; a wedge surface is arranged on the side of the propelling element away from the mounting handle; an inclined surface matched with the wedge surface is arranged on the roller sliding block; the wedge surface is pressed on the inclined surface; a first reset spring is arranged between the mounting handle and the mounting block; and a second reset spring is arranged between the roller sliding block and the mounting block.

[0006] The rolling head further comprises a shell arranged outside the mounting block; and the mounting block is rotatably mounted on the shell.

[0007] One end of the shell away from the mounting handle is provided with a friction ring.

[0008] The side of the shell close to the mounting handle is provided with an end cover; the end cover is sleeved on the mounting handle; a eave part is arranged on the mounting handle; the eave part blocks the end cover, so that the shell cannot be separated from the mounting handle.

[0009] The propelling element is arranged away from the axis of the mounting handle.

[0010] The propelling element is arranged on the axis of the mounting handle; and the section of the part where the mounting handle contacts the mounting block is non-circular.

[0011] Roller bearings are arranged between the rollers.

[0012] The clamping unit comprises a fixed clamp, a movable clamp, a connecting rod and a locking cylinder; the movable clamp is arranged on a sliding table and can move along the sliding table to approach or move away from the fixed clamp; one end of the connecting rod is hinged to the movable clamp, and the other end is hinged to the locking cylinder.

[0013] The end of the connecting rod hinged to the locking cylinder is provided with a roller; and the roller is located in a guide groove on a clamp stand.

[0014] The rotating unit comprises a driving motor, a spline transmission shaft sleeve and a spline shaft, the spline transmission shaft sleeve is connected to the power output end of the driving motor through a transmission component, the spline shaft is arranged inside the spline transmission shaft sleeve, and the mounting handle of the rolling head is mounted on the spline shaft.

[0015] The feeding unit comprises a servo motor, a screw rod connected to the power output end of the servo motor and a nut arranged on the screw rod, the mounting handle is arranged on a main shaft seat, and the main shaft seat is fixed on the nut.

[0016] By adopting the technical scheme, the metal conduit rolling machine has a simpler main shaft radial adjusting structure compared with the prior art, the roller sliding block is arranged on the rolling head, the mold is blocked by the clamping unit when the roller is fed to the rolling station during the operation process, the mounting handle is pushed by the feeding unit when the radial position of the roller needs to be adjusted, the mounting handle drives the pushing piece to move, the roller sliding block is pushed to produce radial displacement through the wedge surface of the pushing piece, and the purpose of adjusting the position of the roller is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 FIG. 1 is a structural schematic view of the metal conduit rolling machine.

[0018] Figure 2 FIG. 2 is a structural schematic view of the metal conduit rolling machine after the protective cover is removed.

[0019] Figure 3 FIG. 3 is a structural schematic view of the feeding unit.

[0020] Figure 4 FIG. 4 is a sectional view of the assembly structure of the rolling head.

[0021] Figure 5 FIG. 5 is a sectional view of the clamping unit.

[0022] Figure 6 FIG. 6 is a structural schematic view of the clamping unit.

[0023] Figure 7 FIG. 7 is a sectional view of the rolling head of the single roller.

[0024] Figure 8 FIG. 8 is a structural schematic view of the rolling head of the single roller.

[0025] Figure 9 FIG. 9 is a sectional view of the rolling head of the double roller.

[0026] Figure 10 FIG. 10 is a structural schematic view of the rolling head of the double roller.

[0027] Figure 11 FIG. 11 is a front view of the mold.

[0028] Figure 12 is a sectional view taken along line A-A in Figure 11

[0029] Figure 13 is a perspective view of the mold.

[0030] Figure 14 is a layout diagram of the inside of the box. DETAILED DESCRIPTION

[0031] The application will be further described in detail by the accompanying drawings and specific embodiments.

[0032] As shown in Figure 1 , 2 , a metal conduit rolling machine of the present application comprises a base and a rotating unit 1, a rolling head 2, a feeding unit 3 and a clamping unit 4 arranged on the base. The base comprises a box 51 at the lower part and a protective cover 52 at the upper part, and the rolling head 2, the feeding unit 3 and the clamping unit 4 are arranged above the box 51. As shown in Figure 4 , the rotating unit 1 comprises a driving motor 11, a spline transmission shaft sleeve 12 and a spline shaft 13, and the spline shaft 13 is arranged inside the spline transmission shaft sleeve 12. The driving motor 11 is arranged inside the box 51, and the spline transmission shaft sleeve 12 and the spline shaft 13 are arranged above the box 51. The driving motor 11 is a speed reducer motor, and the power output end of the driving motor 11 is provided with a driving pulley 14. A driven pulley 15 is arranged on the spline transmission shaft sleeve 12, and the driving pulley 14 and the driven pulley 15 are connected by a transmission belt 16. Figure 14 As shown in

[0033] The clamping unit 4 is used for clamping and fixing the conduit to be processed. The rolling head 2 is installed on the rotating unit 1, and the rotating unit 1 is used for driving the rolling head 2 to rotate. The feeding unit 3 is used for driving the rolling head 2 to move towards the end of the conduit clamped and fixed by the clamping unit 4.

[0034] As shown in Figure 4 ​As shown in the drawings, the rolling head 2 comprises a mounting handle 21, a mounting block 22 and a roller 23. The end of the mounting handle 21 is inserted into the insertion hole of the end of the spline shaft 13 and is fixed by a positioning screw. A strong magnet 24 is arranged in the insertion hole. A first limiting nut 17 is arranged at the end of the spline shaft 13 away from the mounting handle 21. The spline transmission shaft sleeve 12 is rotatably arranged on the mounting frame 19 by a first bearing 18 and is limited by a second limiting nut 191. A rotating shaft 25 is arranged outside the mounting handle 21. The rotating shaft 25 is arranged on a rotating shaft seat 27 by a second bearing 26. The rotating shaft seat 27 is fixed on a main shaft seat 28.

[0035] As shown in the drawings, Figures 7-10 The rolling head 2 further comprises a shell 29 arranged outside the mounting block 22. A plane bearing 291 and a deep groove ball bearing 292 are arranged between the mounting block 22 and the shell 29. The plane bearing 291 provides axial positioning support for the mounting block 22. The deep groove ball bearing 292 provides radial positioning support for the mounting block 22. A friction ring 293 is arranged at the end of the shell 29 away from the mounting handle 21. The friction ring 293 is made of brass and protects the mold from being scratched when it is in contact with the mold. An end cover 294 is arranged on the side of the shell 29 close to the mounting handle 21. The end cover 294 is sleeved on the mounting handle 21. A eave part 211 is arranged on the mounting handle 21. The eave part 211 blocks the end cover 294 so that the shell 29 cannot be separated from the mounting handle 21.

[0036] A pushing piece 30 is fixed on the mounting handle 21. The pushing piece 30 extends along the axial direction of the mounting handle 21 and is inserted into the insertion slot on the mounting block 22. The mounting block 22 can slide on the pushing piece 30 so as to be close to or away from the mounting handle 21. The mounting block 22 can also rotate synchronously with the mounting handle 21. In an embodiment of the present application, the rolling head 2 is a single-roller structure, as shown in the drawings. Figure 7 、 8 In this embodiment, the pushing piece 30 is arranged away from the axis of the mounting handle 21. Therefore, when the mounting handle 21 rotates, the mounting block 22 also rotates synchronously. In another embodiment of the present application, the rolling head 2 is a double-roller structure, as shown in the drawings. Figure 9 、 10 The pushing piece 30 is arranged on the axis of the mounting handle 21. The part of the mounting handle 21 in contact with the mounting block 22 is non-circular in cross section, for example, the mounting handle 21 is connected with the mounting block 22 by a key or the cross section of the mounting block 22 is square. Therefore, the mounting handle 21 and the mounting block 22 can rotate synchronously.

[0037] The roller 23 is installed on the roller slider 232 through a roller shaft 231, and a roller bearing 233 is arranged between the roller 23 and the roller 23.

[0038] The roller slider 232 is installed in and movable in a sliding groove on the mounting block 22, and the side of the pushing piece 30 away from the mounting handle 21 is provided with a wedge surface 301, and the roller slider 232 is provided with an inclined surface 232a matched with the wedge surface 301, and the wedge surface 301 is pressed on the inclined surface 232a; a first reset spring 299 is arranged between the mounting handle 21 and the mounting block 22, and a second reset spring 298 is arranged between the roller slider 232 and the mounting block 22.

[0039] By adopting the technical scheme, when the roller 23 is fed to the rolling wave station in the operation process, the mounting block 22 is blocked by the die clamped by the clamping unit 4, when the radial position of the roller 23 needs to be adjusted, the mounting handle 21 is pushed by the feeding unit 3, the mounting handle 21 drives the pushing piece 30 to move, so that the wedge surface 301 of the pushing piece 30 pushes the roller slider 232 to produce displacement in the radial direction, and the purpose of adjusting the position of the roller 23 is achieved.

[0040] As shown in Figure 5 , 6 The clamping unit 4 includes a fixed clamp 41, a movable clamp 42, a connecting rod 43 and a locking cylinder 44, the movable clamp 42 is arranged on a sliding table and can move along the sliding table to approach or move away from the fixed clamp 41, the sliding table is a dovetail sliding table 45, the fixed clamp 41 and the dovetail sliding table 45 are arranged on a clamp mounting plate 46, and the clamp mounting plate 46 is arranged on an auxiliary mounting plate 47. The locking cylinder 44 is fixed to the auxiliary mounting plate 47. One end of the connecting rod 43 is hinged to the movable clamp 42, and the other end is hinged to a connecting rod mounting seat 48 at the end of the push rod of the locking cylinder 44. A roller 49 is arranged on the connecting rod mounting seat 48, and the roller 49 is located in a guide groove 401 on a clamp stand 40.

[0041] As shown in Figures 11-13 The clamping unit 4 clamps the die, and the die includes a die sleeve 61, a rolling wave die 62, a positioning copper ring 63 and a catheter positioning plate 64. The rolling wave die 62 is located outside the die sleeve 61, and the movable clamp 42 and the fixed clamp 41 can clamp and fix the die sleeve 61. The inner side wall of the rolling wave die 62 is provided with a type groove 621, and in operation, the catheter is inserted into the inner side of the rolling wave die 62, and the roller 23 rolls and presses the catheter to make the catheter locally deform and enter the type groove 621.

[0042] As shown in Figure 3As shown, the feeding unit 3 comprises a servo motor 31, a screw rod 32 connected to the power output end of the servo motor 31, and a nut 33 arranged on the screw rod 32, and the spindle seat 28 is fixed on the nut 33. The servo motor 31 is connected with a speed reducer 34, and the speed reducer 34 is connected to the screw rod 32 through a shaft coupling 35. The screw rod 32 is arranged on a screw rod mounting plate 36, and a linear slide rail 37 is also arranged on the screw rod mounting plate 36, and the spindle seat 28 is installed on the linear slide rail 37 through a sliding block 38, and a position sensor 39 is also arranged on the screw rod mounting plate 36.

[0043] Obviously, the above-mentioned embodiments are only examples for clearly illustrating the present application, and are not intended to limit the embodiments. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, all the embodiments cannot be exhausted, and the obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A metal conduit rolling machine characterized by: The device comprises a base, a rotating unit, a rolling head, a feeding unit and a clamping unit arranged on the base; the clamping unit is used for clamping a pipe to be processed; the rotating unit is used for driving the rolling head to rotate; the feeding unit is used for driving the rolling head to move towards the end of the pipe clamped by the clamping unit; the rolling head comprises a mounting handle, a mounting block and a roller; a propelling member is fixed on the mounting handle; the mounting block is mounted on the propelling member and can slide on the propelling member to approach or move away from the mounting handle and can rotate synchronously with the mounting handle; the roller is mounted on a roller sliding block through a roller shaft; the roller sliding block is mounted in a sliding groove on the mounting block and can move in the sliding groove; a wedge surface is arranged on the side of the propelling member away from the mounting handle; an inclined surface is arranged on the roller sliding block and matched with the wedge surface; the wedge surface is pressed on the inclined surface; a first return spring is arranged between the mounting handle and the mounting block; and a second return spring is arranged between the roller sliding block and the mounting block.

2. The metal conduit rolling machine of claim 1, wherein: The rolling head further comprises a shell arranged outside the mounting block; and the mounting block is rotatably mounted on the shell.

3. The metal conduit rolling machine of claim 2, wherein: A friction ring is arranged at the end of the shell away from the mounting handle.

4. The metal conduit rolling machine of claim 2, wherein: An end cover is arranged on the side of the shell close to the mounting handle; the end cover is sleeved on the mounting handle; a eave is arranged on the mounting handle; the eave blocks the end cover so that the shell cannot be separated from the mounting handle.

5. The metal pipe rolling machine as claimed in claim 1, wherein: The propelling member is arranged away from the axis of the mounting handle.

6. The metal pipe rolling machine as claimed in claim 1, wherein: The propelling member is arranged on the axis of the mounting handle; and the section of the part where the mounting handle contacts the mounting block is non-circular.

7. A metal pipe rolling machine as claimed in any one of claims 1 to 6, characterized in that: The clamping unit comprises a fixed clamp, a movable clamp, a connecting rod and a locking cylinder; the movable clamp is arranged on a sliding table and can move along the sliding table to approach or move away from the fixed clamp; one end of the connecting rod is hinged to the movable clamp and the other end is hinged to the locking cylinder.

8. The metal conduit rolling machine of claim 7, wherein: A roller is arranged at the end of the connecting rod hinged to the locking cylinder; and the roller is located in a guide groove on a clamp stand.

9. A metal pipe rolling machine as claimed in any one of claims 1 to 6, wherein: The rotating unit comprises a driving motor, a spline transmission shaft sleeve and a spline shaft; the spline transmission shaft sleeve is connected to the power output end of the driving motor through a transmission member; the spline shaft is arranged inside the spline transmission shaft sleeve; and the mounting handle of the rolling head is mounted on the spline shaft.

10. The metal pipe rolling machine as claimed in any one of claims 1 to 6, wherein: The feeding unit comprises a servo motor, a lead screw connected to the power output end of the servo motor and a nut arranged on the lead screw; the mounting handle is arranged on a main shaft seat; and the main shaft seat is fixed on the nut.

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