Metal pipe processing machine tool and processing method thereof

Abstract

The present invention relates to the technical field of metal pipe processing, and discloses a metal pipe processing machine tool and a processing method thereof, wherein the metal pipe processing machine tool comprises a processing mechanism, wherein the processing mechanism comprises a processing table and a support seat; a pipe expansion mechanism is installed on the side of the support seat, wherein the pipe expansion mechanism comprises a base, a support column, a pipe expansion column and an oil tank; a rotating mechanism is arranged on the outside of the support column, wherein the rotating mechanism comprises a turntable and a side groove; a transmission mechanism is installed inside the pipe expansion column, wherein the transmission mechanism comprises a screw, a second gear, a transmission frame, a connecting ring and a connecting rod; an oiling mechanism is installed inside each of the oil tanks, wherein the oiling mechanism comprises a back plate, an oiling brush and a lifting block. The present application has the advantages of saving time and effort, being convenient and fast, applying evenly, making full use of and reducing waste of resources.

Description

Technical Field

[0001] The present invention relates to the technical field of metal pipe processing, and more specifically, to a metal pipe processing machine tool and a processing method thereof. Background Art

[0002] Metal pipe fittings can be used in a variety of industrial, construction and manufacturing applications. They play an important role in connecting, supporting and regulating piping systems. The processing of metal pipe fittings usually requires the use of various different types of machine tools to meet the production of pipe fittings of different shapes, sizes and requirements.

[0003] There is a "pipe expansion" process in the metal pipe processing technology. Pipe expansion is a processing method that expands the diameter of the pipe by mechanical means. The process of pipe expansion usually uses a special machine tool, called a "pipe expander". The main function of this machine tool is to stretch and expand a section of the pipe by applying force, thereby increasing its diameter or changing its shape.

[0004] The main body for pipe expansion is usually a cylindrical structure, called a pipe expansion head. When a copper pipe is expanded, the diameter of the metal copper pipe is expanded by inserting the pipe expansion head into the metal pipe fitting. Before each insertion of the pipe expansion head into the copper pipe, it is necessary to manually add lubricant to the pipe expansion head so that the pipe expansion head can be inserted into the copper pipe more easily. However, manual addition requires frequent operations, which is time-consuming and laborious. In addition, manual operation only sprays the lubricant on the top surface of the pipe expansion head, and it is difficult to evenly cover the entire surface of the pipe expansion head, thereby affecting the overall lubrication of the copper pipe. At the same time, a considerable part of the added lubricant drips along the pipe expansion head onto the platform below it, which not only causes a waste of lubricant, but also the lubricant easily absorbs dust and metal chips, resulting in pollution of the pipe expansion machine. Therefore, it is necessary to propose a metal pipe processing machine tool to solve the above problems. Summary of the invention

[0005] In view of the problems existing in the prior art, the purpose of the present invention is to provide a metal pipe processing machine tool and a processing method thereof, which can solve the problems of cumbersome manual lubricant application on the surface of the expansion head in the prior art, uneven application, and a large amount of lubricant dripping onto the workbench, causing waste and pollution. It has the advantages of saving time and labor, being convenient and fast, applying evenly, making full use of and reducing resource waste.

[0006] To solve the above problems, the present invention adopts the following technical solutions:

[0007] A metal pipe processing machine tool comprises a processing mechanism, wherein the processing mechanism comprises a processing table, and a support seat is slidably connected to the top surface of the processing table;

[0008] A pipe expansion mechanism is installed on the side of the support seat, and the pipe expansion mechanism includes a base installed on the side of the support seat, a support column is fixed at the center of the base, and a pipe expansion column is fixed at the end of the support column, and a circular array of oil grooves is arranged on the surface of the pipe expansion column;

[0009] A rotating mechanism is disposed outside the support column, and the rotating mechanism comprises a rotating disk rotatably connected to the outer wall of the support column, and a circular array on the side of the rotating disk has a plurality of side grooves;

[0010] A transmission mechanism is installed inside the pipe expansion column, and the transmission mechanism includes a screw rod slidably connected to the inside of the pipe expansion column, one end of the screw rod is provided with a thread, and the end of the screw rod provided with a thread is threadedly connected to a second gear, and the other end of the screw rod is rotatably connected to a transmission frame, and the outside of the transmission frame is rotatably connected to a connecting ring, and the outer wall of the connecting ring is evenly rotatably connected to a plurality of connecting rods;

[0011] An oiling mechanism is installed inside each of the oil grooves, and the oiling mechanism includes a back plate embedded in each of the oil grooves, an oiling brush is installed on the surface of the back plate, and a lifting block is fixed to one end of the back plate close to the turntable, the lifting block is slidably connected to the corresponding side groove, and the outer end of the connecting rod is rotatably connected to the corresponding lifting block.

[0012] As a preferred solution of the present invention, the processing mechanism also includes an oil box arranged on the top surface of the processing table, the oil box is located below the expansion column, a filter plate is installed inside the oil box, a pump body is installed on one side of the oil box, the output end of the pump body is connected to an oil pipeline, the top surface of the processing table is provided with a propulsion groove, the inside of the propulsion groove is slidably connected to a sliding seat, and the bottom surface of the support seat is installed on the top surface of the sliding seat.

[0013] As a preferred solution of the present invention, a fixing mechanism is also installed on the top surface of the processing table, and the fixing mechanism includes a lower clamp installed on the top surface of the processing table, an electric push rod is installed on the side of the lower clamp, a processing piece is snap-connected to the top surface of the lower clamp, and an upper clamp is installed on the output end of the electric push rod.

[0014] As a preferred solution of the present invention, the tube expansion mechanism further comprises an oil absorption plate installed inside the oil tank, and a plurality of adjustment grooves are provided in a circular array on the end surface of the tube expansion column.

[0015] As a preferred solution of the present invention, the rotating mechanism also includes a rotating ring fixed to the other side of the turntable, the inner side of the rotating ring is rotatably connected to the surface of the support column, the outer wall of the rotating ring is provided with a gear ring, a rotating motor is installed inside the base, a first gear is installed at the output end of the rotating motor, the first gear is meshed with the gear ring, a sliding column is fixed inside each side groove, and the lifting block is slidably connected to the corresponding sliding column.

[0016] As a preferred solution of the present invention, a control mechanism is provided inside the adjusting groove, and the control mechanism includes a first spring installed inside each of the adjusting grooves, a movable block is slidably connected in each of the adjusting grooves, an end of the first spring is installed on the surface of the corresponding movable block, an inner groove is provided on the movable block, a moving block is slidably connected in the inner groove, a second spring is installed in the inner groove, the moving block abuts against the second spring, a push column is fixed to the side of the moving block, the push column passes through the side of the movable block, the top surface of the moving block is rotatably connected to a nozzle, a plurality of protrusions are equidistantly fixed to the side of the inner groove, and the tail end of the nozzle abuts against the protrusions.

[0017] As a preferred solution of the present invention, the transmission mechanism also includes a rack fixed on the surface of each movable block, a plurality of third gears are arranged in a circular array around the second gear, each of the third gears is meshed and connected with the second gear and the corresponding rack, and an extrusion column is fixed at the other end of the transmission frame.

[0018] As a preferred solution of the present invention, an oil supply mechanism is installed inside the support column, and the oil supply mechanism includes a first oil bag installed inside the support column, the oil delivery pipe passes through the base and the support column and is connected to the first oil bag, and the extrusion column abuts against the first oil bag, and the side of the first oil bag is evenly connected with a plurality of oil distribution pipes, each of the oil distribution pipes is respectively connected to the corresponding oil tank, each of the oil distribution pipes is connected to a branch pipe, the end of each branch pipe is connected to a second oil bag, the other side of each second oil bag is connected to a connecting pipe, and the other end of the connecting pipe is connected to the corresponding nozzle, and a pressure rod is slidably connected to the inside of each oil tank, the pressure rod passes through the corresponding oil suction plate and the second oil bag, a third spring is sleeved on the pressure rod, and the pressure rod is elastically connected to the inside of the expansion column through the third spring, a pressure plate is fixed to the end of the pressure rod, and the pressure plate abuts against the corresponding second oil bag, and a one-way valve is installed inside the oil delivery pipe, the oil distribution pipe, the branch pipe and the connecting pipe.

[0019] As a preferred solution of the present invention, the oiling mechanism further comprises an extrusion block fixed to one end of the back plate close to the adjustment groove.

[0020] As a preferred embodiment of the present invention, a processing method of a metal pipe processing machine tool is characterized by comprising the following steps:

[0021] S1: The lifting block rises to the top of the sliding column, causing the oiling brush to slide out of the oil tank, and then the turntable drives the oiling mechanism to rotate 50 degrees. The oiling brush evenly applies the lubricant to the surface of the expanded column. After applying once, the turntable drives the oiling mechanism to return, and the back plate slides out of the oil tank while pushing the control mechanism to push the nozzle out of the movable block. The sliding out of the back plate can cause the pressure plate to squeeze the second oil bag, so that the nozzle sprays the lubricant to lubricate the end of the expanded column;

[0022] S2: Place the workpiece on the lower fixture, and use the electric push rod to drive the upper fixture downward to fix the workpiece;

[0023] S3: The sliding seat drives the supporting seat to slide, and the supporting seat drives the pipe expansion mechanism to approach the workpiece, so that the pipe expansion column is inserted into the workpiece to expand the pipe. While expanding the pipe, the workpiece squeezes the movable block to retract the oiling mechanism into the corresponding oil groove, and squeezes the first oil bag, so that the lubricant in the first oil bag enters the oil groove and the second oil bag, providing lubricant for the oiling brush and the nozzle;

[0024] S4: The support seat drives the expansion mechanism to return, and the expansion column slides out of the workpiece, and the expansion is completed. Then the electric push rod drives the upper clamp to rise, releasing the workpiece, and the worker replaces the workpiece.

[0025] Compared with the prior art, the advantages of the present invention are:

[0026] 1. When the workpiece is installed in the lower fixture, the control mechanism is not affected by external forces, and the back plate and the oiling brush are ejected from the oil tank, and then the rotating mechanism is used to drive the oiling mechanism to rotate around the expansion column, so as to evenly apply the lubricant; then the expansion column is inserted into the workpiece for expansion processing, and the workpiece squeezes the control mechanism, thereby driving the transmission mechanism to move, so that the back plate and the oiling brush return to the corresponding oil tank, and the surface of the expansion column becomes smooth and flat again, which is convenient for the expansion of the workpiece. The rotating mechanism drives the oiling mechanism to automatically complete the lubricant application operation, reducing manual operation, and the application process is simple and efficient, which greatly saves operation time and workload; the oiling brush can be used to apply the lubricant evenly on the surface of the expansion column, which can reduce lubricant overflow and reduce lubricant waste.

[0027] 2. When the back plate pops out from the oil tank, the push column can also be pushed, and the push column drives the nozzle to slide through the moving block, and the nozzle is pushed out from each movable block. In the process of the nozzle sliding out of the inner groove, the tail end of the nozzle hits the bump at intervals, so that the nozzle head swings horizontally, increasing the spraying range and improving the efficiency of the nozzle spraying lubricant. In the process of the back plate and the oiling brush popping out of the oil tank, the pressure rod is also used to drive the pressure plate to squeeze the second oil bag to spray the lubricant from the nozzle. The lubricant adheres to the tip of the expansion column, so that the lubricant can adhere to the entire surface of the expansion column, reducing the friction between the workpiece and the expansion column, and improving the efficiency and effect of expansion.

[0028] 3. The control mechanism drives the oiling mechanism to slide out of the oil tank through the transmission mechanism and compresses the first oil bag, thereby supplying the internal lubricant to the oil tank and the second oil bag. When the oiling brush is retracted into the oil tank, the lubricant inside the oil tank can be absorbed by the oiling brush, which is convenient for the next application. The lubricant in the second oil bag is squeezed by the pressure plate and pumped into the nozzle, thereby spraying it onto the surface of the expansion column through the nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 It is a schematic diagram of the cross-section structure of the pipe expansion mechanism and the rotating mechanism of the present invention;

[0031] Figure 3 For the present invention Figure 2 The enlarged structural diagram at A in the middle;

[0032] Figure 4 For the present invention Figure 2 The enlarged structural diagram at B in the middle;

[0033] Figure 5 For the present invention Figure 2 The enlarged structural diagram at C in the middle;

[0034] Figure 6 It is a partial structural schematic diagram of the pipe expansion mechanism of the present invention;

[0035] Figure 7 It is a partial structural schematic diagram of the rotating mechanism of the present invention;

[0036] Figure 8 It is a schematic diagram of the connection structure between the transmission mechanism and the oiling mechanism of the present invention;

[0037] Fig. 9 It is a partial structural schematic diagram of the oil supply mechanism of the present invention;

[0038] Fig.10 It is a structural schematic diagram of the connection relationship between the second oil bag and the pressure rod of the present invention.

[0039] Description of the numbers in the figure:

[0040] 1. Processing mechanism; 11. Processing table; 12. Oil box; 13. Filter plate; 14. Pump body; 15. Oil pipeline; 16. Propelling groove; 17. Sliding seat; 18. Support seat; 2. Fixing mechanism; 21. Lower fixture; 22. Electric push rod; 23. Processing part; 24. Upper fixture; 3. Pipe expansion mechanism; 31. Base; 32. Support column; 33. Pipe expansion column; 34. Oil tank; 35. Oil absorption plate; 36. Adjusting groove; 4. Rotating mechanism; 41. Turntable; 42. Side groove; 43. Rotating ring; 44. Gear ring; 45. Rotating motor; 46. First gear; 47. Sliding column; 5. Control mechanism; 51. First spring; 52. movable block; 53. inner groove; 54. shift block; 55. second spring; 56. push column; 57. nozzle; 58. bump; 6. transmission mechanism; 61. screw; 62. second gear; 63. third gear; 64. rack; 65. transmission frame; 66. connecting ring; 67. connecting rod; 68. extrusion column; 7. oil supply mechanism; 71. first oil bag; 72. oil distribution pipe; 73. branch pipe; 74. second oil bag; 75. connecting pipe; 76. pressure rod; 77. third spring; 78. pressure plate; 79. one-way valve; 8. oiling mechanism; 81. lifting block; 82. back plate; 83. oiling brush; 84. extrusion block. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] Example 1, please refer to Figure 1-Figure 10 As shown, the present invention discloses a metal pipe processing machine tool, including a processing mechanism 1, the processing mechanism 1 includes a processing table 11, and the top surface of the processing table 11 is slidably connected with a support seat 18;

[0043] A pipe expansion mechanism 3 is installed on the side of the support seat 18. The pipe expansion mechanism 3 includes a base 31 installed on the side of the support seat 18. A support column 32 is fixed at the center of the base 31. A pipe expansion column 33 is fixed at the end of the support column 32. A plurality of oil grooves 34 are arranged in a circular array on the surface of the pipe expansion column 33.

[0044] A rotating mechanism 4 is disposed outside the support column 32, and the rotating mechanism 4 includes a rotating disk 41 rotatably connected to the outer wall of the support column 32, and a circular array of side grooves 42 are formed on the side of the rotating disk 41;

[0045] A transmission mechanism 6 is installed inside the expansion column 33. The transmission mechanism 6 includes a screw rod 61 slidably connected to the inside of the expansion column 33. One end of the screw rod 61 is provided with a thread. The end of the screw rod 61 provided with a thread is threadedly connected to a second gear 62. The other end of the screw rod 61 is rotatably connected to a transmission frame 65. The outside of the transmission frame 65 is rotatably connected to a connecting ring 66. The outer wall of the connecting ring 66 is evenly rotatably connected to a plurality of connecting rods 67.

[0046] An oiling mechanism 8 is installed inside each oil groove 34, and the oiling mechanism 8 includes a back plate 82 embedded in each oil groove 34, and an oiling brush 83 is installed on the surface of the back plate 82. A lifting block 81 is fixed to one end of the back plate 82 close to the turntable 41, and the lifting block 81 is slidably connected to the corresponding side groove 42, and the outer end of the connecting rod 67 is rotatably connected to the corresponding lifting block 81.

[0047] The fixing mechanism 2 provided on the processing table 11 is used to fix the workpiece 23, and drives the expansion mechanism 3 to expand the workpiece 23 through the support seat 18, so as to achieve the effect of uniformly increasing the workpiece 23. Before each insertion of the expansion column 33 into the workpiece 23, it is necessary to evenly apply lubricant on its surface, so as to reduce friction and improve the quality of the expansion process. The expansion column 33 is a truncated cone structure at the front end and a cylindrical structure at the rear end. Before the expansion column 33 enters the workpiece 23, the back plate 82 drives the oiling brush 83 to pop out of the oil tank 34, and the turntable 41 drives a number of back plates 82 and oiling brushes 83 to rotate 50 degrees. During the rotation, the oiling brush 83 contacts the surface of the expansion column 33, so that the lubricant adsorbed by it is evenly applied to the surface of the expansion column 33. After the application is completed, the turntable 41 drives the back plate 82 and the oiling brush 83 to reset. Subsequently, during the process of inserting the expansion column 33 into the workpiece 23, the edge of the workpiece 23 contacts and squeezes the control mechanism 5 protruding from the surface of the expansion column 33, so that the control mechanism 5 is pressed into the expansion column 33, and the control mechanism 5 drives the second gear 62 to rotate, and the second gear 62 pushes the screw 61 to slide to the right through the threaded engagement (as shown in the attached figure). Figure 2 As shown in the figure, the screw 61 drives the connecting rod 67 to swing through the connecting ring 66, and the connecting rod 67 pulls the lifting block 81 to make the back plate 82 and the oiling brush 83 return to the oil groove 34. The surface of the back plate 82 is a curved surface. When the back plate 82 is embedded in the oil groove 34, the expansion column 33 can form a complete and smooth cylindrical structure, thereby expanding the workpiece 23 more accurately and evenly.

[0048] Example 2: This example is an explanation based on Example 1. For details, please refer to Figure 1-Figure 10The processing mechanism 1 also includes an oil box 12 arranged on the top surface of the processing table 11. The oil box 12 is below the expansion column 33. A filter plate 13 is installed inside the oil box 12. A pump body 14 is installed on one side of the oil box 12. The output end of the pump body 14 is connected to an oil pipeline 15. A propulsion groove 16 is provided on the top surface of the processing table 11. A sliding seat 17 is slidably connected inside the propulsion groove 16. The bottom surface of the support seat 18 is installed on the top surface of the sliding seat 17.

[0049] A fixing mechanism 2 is also installed on the top surface of the processing table 11, and the fixing mechanism 2 includes a lower clamp 21 installed on the top surface of the processing table 11, an electric push rod 22 is installed on the side of the lower clamp 21, a processing piece 23 is snap-connected to the top surface of the lower clamp 21, and an upper clamp 24 is installed on the output end of the electric push rod 22.

[0050] The tube expansion mechanism 3 further includes an oil absorption plate 35 installed inside the oil groove 34 , and a plurality of adjustment grooves 36 are provided in a circular array on the end surface of the tube expansion column 33 .

[0051] The rotating mechanism 4 also includes a rotating ring 43 fixed to the other side of the turntable 41. The inner side of the rotating ring 43 is rotatably connected to the surface of the support column 32. The outer wall of the rotating ring 43 is provided with a gear ring 44. A rotating motor 45 is installed inside the base 31. A first gear 46 is installed at the output end of the rotating motor 45. The first gear 46 is meshed and connected with the gear ring 44. A sliding column 47 is fixed inside each side groove 42, and the lifting block 81 is slidably connected to the corresponding sliding column 47.

[0052] A control mechanism 5 is provided inside the adjusting groove 36, and the control mechanism 5 includes a first spring 51 installed inside each adjusting groove 36, and a movable block 52 is slidably connected in each adjusting groove 36. The end of the first spring 51 is installed on the surface of the corresponding movable block 52, and an inner groove 53 is provided on the movable block 52. A moving block 54 is slidably connected in the inner groove 53, and a second spring 55 is installed in the inner groove 53. The moving block 54 abuts against the second spring 55. A push column 56 is fixed to the side of the moving block 54, and the push column 56 passes through the side of the movable block 52. A nozzle 57 is rotatably connected to the top surface of the moving block 54, and a plurality of protrusions 58 are fixed at equal intervals on the side of the inner groove 53, and the tail end of the nozzle 57 abuts against the protrusion 58.

[0053] The transmission mechanism 6 also includes a rack 64 fixed to the surface of each movable block 52. A plurality of third gears 63 are arranged in a circular array around the second gear 62. Each third gear 63 is meshed and connected with the second gear 62 and the corresponding rack 64. An extrusion column 68 is fixed to the other end of the transmission frame 65.

[0054] The oiling mechanism 8 further includes an extrusion block 84 fixed to one end of the back plate 82 close to the adjustment groove 36 .

[0055] The workpiece 23 is installed in the lower clamp 21, and the electric push rod 22 is started. The electric push rod 22 drives the upper clamp 24 to press down and clamp the workpiece 23, so as to fix the workpiece 23. During the installation of the workpiece 23, the adjustment groove 36 is acted upon by the elastic force of the first spring 51, and the movable block 52 pops out of the adjustment groove 36 and protrudes from the surface of the expansion column 33. When the movable block 52 slides outward (away from the center of the expansion column 33), it also drives the rack 64 to slide. The rack 64 drives the second gear 62 to rotate through the third gear 63, and the second gear 62 drives the screw 61 to slide to the left through the threaded fit (as shown in the attached figure). Figure 2 As shown in the figure, the screw rod 61 slides to the left, driving the transmission frame 65 to slide to the left, and the transmission frame 65 drives the connecting rod 67 to swing through the connecting ring 66. The connecting rod 67 props up the lifting block 81 inside the side groove 42, so that the lifting block 81 slides on the sliding column 47, thereby driving the back plate 82 and the oiling brush 83 to slide out of the oil groove 34. Then, the rotating motor 45 inside the base 31 is started, and the rotating ring 43 is driven to rotate outside the supporting column 32 through the meshing of the first gear 46 and the gear ring 44. The rotating ring 43 drives the rotating disk 41 to rotate, and the rotating disk 41 drives the oiling mechanism 8 to rotate together through the sliding column 47 in the side groove 42, and stops after rotating 50 degrees. The oiling brush 83 just touches the surface of the expanded column 33. During the rotation process, the oiling brush 83 evenly applies the lubricant it absorbs to the surface of the expanded column 33. Then, through the above method, the rotating disk 41 drives the oiling mechanism 8 to reset. During the reset process, the oiling brush 83 applies the lubricant again.

[0056] Then the sliding seat 17 slides in the pushing groove 16 and drives the pipe expansion mechanism 3 to approach the workpiece 23 through the support seat 18. The sliding seat 17 is composed of a hydraulic push rod and a slider. The support seat 18 is installed on the slider. The hydraulic push rod pushes the slider to slide in the pushing groove 16. During the process of inserting the truncated cone-shaped structure of the expansion column 33 into the workpiece 23, the edge of the workpiece 23 contacts and squeezes the movable block 52 protruding from the surface of the expansion column 33, and the movable block 52 slides into the adjusting groove 36, compressing the first spring 51, and at the same time drives the rack 64 to slide toward the center of the expansion column 33, and drives the second gear 62 to rotate through the third gear 63. The second gear 62 drives the screw rod 61 to slide to the right through threaded cooperation, pulling the transmission frame 65 to slide to the right, and the transmission frame 65 drives the connecting rod 67 to contract through the connecting ring 66, pulling the lifting block 81 toward the center of the expansion column 33, and the lifting block 81 slides along the sliding column 47, driving the back plate 82 and the oiling brush 83 back into the oil groove 34, so that the surface of the expansion column 33 is flat and smooth, and then the expansion column 33 is smoothly inserted into the interior of the workpiece 23 to expand the inner diameter of the workpiece 23.

[0057] As the back plate 82 slides out of the oil groove 34 , the extrusion block 84 at its end contacts and pushes the corresponding push post 56 , causing the push post 56 to slide to the right. The push post 56 drives the shift block 54 to slide in the inner groove 53 , compressing the second spring 55 while driving the nozzle 57 to slide, and the nozzle 57 slides out of the inner groove 53 . When the nozzle 57 slides out, it not only sprays lubricant to cover the truncated cone-shaped structural surface of the expansion column 33, thereby achieving the effect of applying lubricant to the truncated cone-shaped structural surface of the expansion column 33, but also during the sliding process, a number of protrusions 58 on the inner wall of the inner groove 53 hit the tail of the nozzle 57 at intervals, causing the nozzle 57 to swing (the nozzle 57 and the top surface of the shift block 54 are elastically connected by a torsion spring. When the protrusion 58 hits the tail of the nozzle 57, the nozzle 57 swings to store force in the torsion spring. When the protrusion 58 does not hit the nozzle 57, the torsion spring resets the nozzle 57), thereby expanding the lubricant spraying range and improving the lubricant spraying effect. After the back plate 82 drives the extrusion block 84 to completely slide out of the oil groove 34, the extrusion block 84 passes over the push pin 56 and no longer conflicts with the push pin 56. Under the elastic force of the second spring 55, the moving block 54 drives the nozzle 57 back to the inner groove 53, and the push pin 56 is reset at the same time to avoid affecting the edge of the workpiece 23 from conflicting with the movable block 52.

[0058] Example 3: This example is an explanation based on Example 1. For details, please refer to Figure 1-Figure 10 The support column 32 is provided with an oil supply mechanism 7, which includes a first oil bag 71 installed inside the support column 32. The oil delivery pipe 15 passes through the base 31 and the support column 32 and is connected to the first oil bag 71. The extrusion column 68 abuts against the first oil bag 71. The side of the first oil bag 71 is evenly connected with a plurality of oil distribution pipes 72. Each oil distribution pipe 72 is respectively connected to the corresponding oil tank 34. Each oil distribution pipe 72 is connected to a branch pipe 73. The end of each branch pipe 73 is connected to a second oil bag 74. The other side of each second oil bag 74 is connected to A connecting pipe 75 is connected, and the other end of the connecting pipe 75 is connected to the corresponding nozzle 57. A pressure rod 76 is slidably connected to the inside of each oil groove 34. The pressure rod 76 passes through the corresponding oil suction plate 35 and the second oil bag 74. A third spring 77 is sleeved on the pressure rod 76. The pressure rod 76 is elastically connected to the inside of the expansion column 33 through the third spring 77. A pressure plate 78 is fixed to the end of the pressure rod 76. The pressure plate 78 contacts the corresponding second oil bag 74. A one-way valve 79 is installed inside the oil pipeline 15, the oil distribution pipe 72, the branch pipe 73 and the connecting pipe 75.

[0059] An oil box 12 is installed on the processing table 11 below the expansion column 33, and the oil box 12 contains lubricant. Figure 2As shown, an oil delivery pipe 15 is provided through the base 31 and the support column 32, one end of the oil delivery pipe 15 is connected to the oil box 12, and the other end is connected to the first oil bag 71, and the lubricant inside the oil box 12 is supplied to the first oil bag 71 through the pump body 14. In addition, the oil box 12 can recover the lubricant dripping from the surface of the expanded tube column 33, and a filter plate 13 is installed inside the oil box 12 to filter out impurities in the recovered lubricant to avoid lubricant contamination.

[0060] The screw 61 drives the transmission frame 65 to move to the left and drives the extrusion column 68 to squeeze the first oil bag 71. The one-way valve 79 in the oil delivery pipe 15 is closed, and the one-way valve 79 in the oil distribution pipe 72 is opened. The lubricant in the first oil bag 71 enters each oil groove 34 through the oil distribution pipe 72. An oil absorption plate 35 is installed in the oil groove 34. The oil absorption plate 35 is made of a sponge with a relatively hard texture to prevent the lubricant from dripping. The oil absorption plate 35 divides the oil groove 34 into two spaces. The space close to the surface of the expansion column 33 is an open space (hereinafter referred to as the outer space). The outer space is used to place the back plate 82 and the oil brush 83. The space away from the surface of the expansion column 33 is a closed space (hereinafter referred to as the inner space). The inner space is filled with lubricant, and the oil distribution pipe 72 is connected to the inner space. The lubricant in the oil distribution pipe 72 also enters the second oil bag 74 through the branch pipe 73. When the squeezing column 68 slides to the right and releases the first oil bag 71, the first oil bag 71 is reset, the one-way valve 79 in the oil delivery pipe 15 is opened, and the one-way valves 79 in the oil distribution pipe 72 and the branch pipe 73 are closed. At the same time, the pump body 14 pumps the lubricant in the oil box 12 into the first oil bag 71 through the oil delivery pipe 15.

[0061] After the back plate 82 slides out of the oil groove 34, the oiling brush 83 no longer interferes with the pressure rod 76 in the oil groove 34. Under the elastic force of the third spring 77, the pressure rod 76 slides in a direction away from the center of the expansion column 33, thereby driving the pressure plate 78 to squeeze the second oil bag 74. The pressure causes the one-way valve 79 in the connecting pipe 75 to open, and the lubricant in the second oil bag 74 enters the nozzle 57 and then sprays out from the nozzle 57. When the back plate 82 and the oiling brush 83 return to the oil groove 34, the oiling brush 83 pushes the pressure rod 76 to slide toward the center of the expansion column 33. The pressure rod 76 compresses the third spring 77 and drives the pressure plate 78 to release the second oil bag 74, so that the first oil bag 71 can be pressurized and the lubricant can be supplied again.

[0062] This embodiment also discloses a processing method of a metal pipe processing machine tool, comprising the following steps:

[0063] S1: The lifting block 81 rises to the top of the slide column 47, so that the oiling brush 83 slides out of the oil groove 34, and then the turntable 41 drives the oiling mechanism 8 to rotate 50 degrees, and the oiling brush 83 evenly applies the lubricant on the surface of the expansion column 33. After applying once, the turntable 41 drives the oiling mechanism 8 to return, and the back plate 82 slides out of the oil groove 34 and pushes the control mechanism 5, so that the nozzle 57 is pushed out from the movable block 52, and the sliding out of the back plate 82 can make the pressure plate 78 squeeze the second oil bag 74, so that the nozzle 57 sprays the lubricant to lubricate the end of the expansion column 33;

[0064] S2: placing the workpiece 23 on the lower fixture 21, and driving the upper fixture 24 downward by the electric push rod 22 to fix the workpiece 23;

[0065] S3: The sliding seat 17 drives the supporting seat 18 to slide, and the supporting seat 18 drives the tube expansion mechanism 3 to approach the workpiece 23, so that the tube expansion column 33 is inserted into the workpiece 23 to expand the tube. While expanding the tube, the workpiece 23 retracts the oiling mechanism 8 into the corresponding oil groove 34 by squeezing the movable block 52, and squeezes the first oil bag 71, so that the lubricant in the first oil bag 71 enters the oil groove 34 and the second oil bag 74, providing lubricant for the oiling brush 83 and the nozzle 57;

[0066] S4: the support seat 18 drives the expansion mechanism 3 to return, the expansion column 33 slides out of the workpiece 23, and the expansion is completed. Then the electric push rod 22 drives the upper clamp 24 to rise, releasing the workpiece 23, and the worker replaces the workpiece 23.

[0067] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the protection scope of the present invention.

Claims

1. A metal pipe processing machine tool, comprising a processing mechanism (1), characterized in that: The processing mechanism (1) comprises a processing table (11), and a support seat (18) is slidably connected to the top surface of the processing table (11); A pipe expansion mechanism (3) is installed on the side of the support seat (18), the pipe expansion mechanism (3) comprises a base (31) installed on the side of the support seat (18), a support column (32) is fixed at the center of the base (31), a pipe expansion column (33) is fixed at the end of the support column (32), and a plurality of oil grooves (34) are provided in a circular array on the surface of the pipe expansion column (33); A rotating mechanism (4) is disposed outside the support column (32), the rotating mechanism (4) comprising a rotating disk (41) rotatably connected to the outer wall of the support column (32), the side of the rotating disk (41) having a plurality of side grooves (42) in a circular array; A transmission mechanism (6) is installed inside the expansion column (33), and the transmission mechanism (6) comprises a screw rod (61) slidably connected to the inside of the expansion column (33), one end of the screw rod (61) is provided with a thread, the end of the screw rod (61) provided with a thread is threadedly connected to a second gear (62), the other end of the screw rod (61) is rotatably connected to a transmission frame (65), the outside of the transmission frame (65) is rotatably connected to a connecting ring (66), and the outer wall of the connecting ring (66) is evenly rotatably connected to a plurality of connecting rods (67); An oiling mechanism (8) is installed inside each of the oil grooves (34), and the oiling mechanism (8) comprises a back plate (82) embedded inside each of the oil grooves (34), an oiling brush (83) is installed on the surface of the back plate (82), a lifting block (81) is fixed to one end of the back plate (82) close to the turntable (41), the lifting block (81) is slidably connected to the corresponding side groove (42), and the outer end of the connecting rod (67) is rotatably connected to the corresponding lifting block (81); The processing mechanism (1) further comprises an oil box (12) arranged on the top surface of the processing table (11), the oil box (12) being located below the expansion column (33), a filter plate (13) being installed inside the oil box (12), a pump body (14) being installed on one side of the oil box (12), an output end of the pump body (14) being connected to an oil delivery pipe (15), a propulsion groove (16) being provided on the top surface of the processing table (11), a sliding seat (17) being slidably connected inside the propulsion groove (16), and a bottom surface of the support seat (18) being installed on the top surface of the sliding seat (17); The top surface of the processing table (11) is also equipped with a fixing mechanism (2), the fixing mechanism (2) comprising a lower clamp (21) installed on the top surface of the processing table (11), an electric push rod (22) installed on the side of the lower clamp (21), a processing piece (23) is snap-connected to the top surface of the lower clamp (21), and an upper clamp (24) is installed at the output end of the electric push rod (22); The tube expansion mechanism (3) further comprises an oil absorption plate (35) installed inside the oil groove (34); a plurality of adjustment grooves (36) are provided in a circular array on the end surface of the tube expansion column (33); The rotating mechanism (4) further comprises a rotating ring (43) fixed to the other side of the rotating disk (41); the inner side of the rotating ring (43) is rotatably connected to the surface of the supporting column (32); the outer wall of the rotating ring (43) is provided with a gear ring (44); a rotating motor (45) is installed inside the base (31); a first gear (46) is installed at the output end of the rotating motor (45); the first gear (46) is meshingly connected with the gear ring (44); a sliding column (47) is fixed inside each of the side grooves (42); and the lifting block (81) is slidably connected with the corresponding sliding column (47); A control mechanism (5) is arranged inside the adjusting groove (36), and the control mechanism (5) comprises a first spring (51) installed inside each adjusting groove (36), a movable block (52) is slidably connected inside each adjusting groove (36), an end of the first spring (51) is installed on the surface of the corresponding movable block (52), an inner groove (53) is arranged on the movable block (52), a moving block (54) is slidably connected inside the inner groove (53), a second spring (55) is installed inside the inner groove (53), the moving block (54) abuts against the second spring (55), a push column (56) is fixed on the side surface of the moving block (54), the push column (56) passes through the side surface of the movable block (52), a nozzle (57) is rotatably connected to the top surface of the moving block (54), a plurality of protrusions (58) are fixed at equal intervals on the side surface of the inner groove (53), and the tail end of the nozzle (57) abuts against the protrusion (58).

2. The metal pipe processing machine tool according to claim 1, characterized in that: The transmission mechanism (6) further comprises a rack (64) fixed to the surface of each movable block (52); a plurality of third gears (63) are arranged in a circular array around the second gear (62); each third gear (63) is meshedly connected with the second gear (62) and the corresponding rack (64); and an extrusion column (68) is fixed to the other end of the transmission frame (65).

3. The metal pipe processing machine tool according to claim 2, characterized in that: An oil supply mechanism (7) is installed inside the support column (32), and the oil supply mechanism (7) includes a first oil bag (71) installed inside the support column (32). The oil delivery pipe (15) passes through the base (31) and the support column (32) and is connected to the first oil bag (71), and the squeezing column (68) abuts against the first oil bag (71). The side of the first oil bag (71) is evenly connected to a plurality of oil distribution pipes (72), each of which is connected to the corresponding oil groove (34), each of which is connected to a branch pipe (73), and the end of each branch pipe (73) is connected to a second oil bag (74), and the other side of each second oil bag (74) is connected to a connecting pipe (73). A connecting pipe (75) is provided, and the other end of the connecting pipe (75) is connected to the corresponding nozzle (57). A pressure rod (76) is slidably connected inside each oil groove (34). The pressure rod (76) penetrates the corresponding oil suction plate (35) and the second oil bag (74). A third spring (77) is sleeved on the pressure rod (76). The pressure rod (76) is elastically connected to the inside of the expansion column (33) through the third spring (77). A pressure plate (78) is fixed to the end of the pressure rod (76). The pressure plate (78) contacts the corresponding second oil bag (74). A one-way valve (79) is installed inside the oil delivery pipe (15), the oil distribution pipe (72), the branch pipe (73) and the connecting pipe (75).

4. The metal pipe processing machine tool according to claim 1, characterized in that: The oiling mechanism (8) further comprises an extrusion block (84) fixed to one end of the back plate (82) close to the adjustment groove (36).

5. The processing method of the metal pipe processing machine tool according to any one of claims 1 to 4, characterized in that: The following steps are involved: S1: The lifting block (81) rises to the top of the slide column (47), causing the oiling brush (83) to slide out of the oil groove (34), and then the turntable (41) drives the oiling mechanism (8) to rotate 50 degrees, and the oiling brush (83) evenly applies the lubricant to the surface of the expansion column (33). After applying once, the turntable (41) drives the oiling mechanism (8) to return, and the back plate (82) slides out of the oil groove (34) and pushes the control mechanism (5) to push the nozzle (57) out of the movable block (52). The sliding out of the back plate (82) enables the pressure plate (78) to squeeze the second oil bag (74), so that the nozzle (57) sprays the lubricant to lubricate the end of the expansion column (33); S2: placing the workpiece (23) on the lower fixture (21), and driving the upper fixture (24) to move downward by the electric push rod (22), thereby fixing the workpiece (23); S3: the sliding seat (17) drives the supporting seat (18) to slide, and the supporting seat (18) drives the pipe expansion mechanism (3) to approach the workpiece (23), so that the pipe expansion column (33) is inserted into the workpiece (23) to expand the pipe. While expanding the pipe, the workpiece (23) retracts the oiling mechanism (8) into the corresponding oil groove (34) by squeezing the movable block (52), and squeezes the first oil bag (71), so that the lubricant in the first oil bag (71) enters the oil groove (34) and the second oil bag (74), thereby providing lubricant for the oiling brush (83) and the nozzle (57); S4: The support seat (18) drives the expansion mechanism (3) to return, and the expansion column (33) slides out of the workpiece (23). The expansion is completed, and then the electric push rod (22) drives the upper clamp (24) to rise, releasing the workpiece (23), and the worker replaces the workpiece (23).

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