CN210936799U

CN210936799U - Numerical control sealing machine for metal pipe

Info

Publication number: CN210936799U
Application number: CN201921929765.8U
Authority: CN
Inventors: 尹艳; 尹可; 尹季瑜
Original assignee: Zhenjiang Yafeng Pneumatic Components Co ltd
Current assignee: Zhenjiang Yafeng Pneumatic Components Co ltd
Priority date: 2019-11-11
Filing date: 2019-11-11
Publication date: 2020-07-07
Anticipated expiration: 2029-11-11

Abstract

The utility model belongs to the technical field of machining equipment, especially, be a numerical control capper for tubular metal resonator, including workstation, automatic unloading mechanism, high frequency pipe end heating mechanism, draw mechanism, spot welding mechanism, drive mechanism and control panel, wherein, automatic unloading mechanism comprises unloading case, square unloading section, feeding cylinder, holding pan and pushing cylinder, the unloading case passes through support frame fixed mounting on the workstation, square unloading section is connected on the bottom discharge end of unloading case. The utility model discloses collect automatic feeding, seal end heating, seal end throat processing and seal welding automation structure in an organic whole, compare with prior art, need not to adopt end cap or closing cap to carry out the tubular metal resonator and seal, reduced metal pipe fitting and sealed the processing cost, guaranteed the leakproofness of pipe fitting port, it is good to seal the effect, and has greatly improved machining efficiency, is applicable to big batch metal pipe fitting production and processing, and the practicality is strong.

Description

Numerical control sealing machine for metal pipe

Technical Field

The utility model relates to a machining equipment art field specifically is a numerical control capper for metal pipe.

Background

The gas spring is an industrial accessory which can play a role in supporting, buffering, braking, height adjustment, angle adjustment and the like. It is composed of the following parts: the device comprises a pressure cylinder, a piston rod, a piston, a sealing guide sleeve, a filler (inert gas or oil-gas mixture), an in-cylinder control element, an out-cylinder control element (a controllable gas spring), a joint and the like. The principle is that inert gas or oil-gas mixture is filled in a closed pressure cylinder, the pressure in a cavity is several times or dozens of times higher than the atmospheric pressure, and the motion of a piston rod is realized by utilizing the pressure difference generated by the cross section area of the piston rod smaller than that of the piston. Due to the fundamental difference in principle, the gas spring has very remarkable advantages compared with the common spring: relatively slow speed, little dynamic force variation (typically within 1: 1.2), and easy control.

The metal sleeve is an important component for producing and assembling the gas spring, the metal pipe is formed by sealing the metal pipe, and a sealing machine is needed when the metal pipe is sealed. However, when the traditional sealing machine is used for sealing a metal pipe, a plug or a sealing cover is welded with the sealing end of the metal pipe to form a sleeve, the welding sealing mode is high in cost, welding stress exists during welding, the sealing performance of the end opening of the pipe fitting cannot be guaranteed, the sealing machine is not suitable for high-pressure sealing and the like, the machining efficiency is low, and the sealing machine is not suitable for batch production.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a numerical control capper for tubular metal resonator has solved traditional capper and has adopted end cap or closing cap and tubular metal resonator to seal to hold the welding mode to make the sleeve pipe man-hour sealing to the tubular metal resonator, and this kind of welding seals the mode required cost higher, has welding stress during the welding, leads to pipe fitting port sealing performance can not guarantee, is not suitable for the condition such as high-pressure seal, and machining efficiency is low, is not suitable for batch production's problem.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a numerical control capper for tubular metal resonator, includes workstation, automatic unloading mechanism, high frequency pipe end heating mechanism, draw mechanism, spot welding mechanism, drive mechanism and control panel, wherein, automatic unloading mechanism comprises unloading case, square unloading section, feeding cylinder, holding dish and pushing equipment cylinder, the unloading case passes through support frame fixed mounting on the workstation, square unloading section is connected on the bottom discharge end of unloading case, feeding cylinder passes through first mount fixed mounting in bottom one side of unloading case, holding dish is connected in feeding cylinder's tailpiece of the piston rod portion, be equipped with the charge trap that is used for holding metal pipe spare on the holding dish, pushing equipment cylinder passes through one side of second mount fixed mounting in the support frame, pushing equipment cylinder's piston rod axial is perpendicular with feeding equipment cylinder's piston rod axial, high frequency pipe end heating mechanism, The pipe shrinking mechanism and the spot welding mechanism are arranged on the workbench in parallel at intervals in sequence, the high-frequency pipe end heating mechanism and the material pushing cylinder are arranged in parallel, the high-frequency pipe end heating mechanism, the pipe shrinking mechanism and the spot welding mechanism are respectively used for high-frequency heating of a sealing end of a metal pipe fitting, pipe end necking processing and sealing welding, and the transmission mechanism is used for transferring the metal pipe fitting supplied by the automatic discharging mechanism to a heating station, a pipe end necking station and a welding station corresponding to the high-frequency pipe end heating mechanism, the pipe shrinking mechanism and the spot welding mechanism in sequence.

As the utility model discloses a preferred technical scheme, the bottom of unloading case sets up to the fill shape, the inner wall length of side and the long looks adaptation of metal pipe fitting pipe of unloading case and square unloading section, the wide long and the wide long looks adaptation of metal pipe fitting of inner wall of square unloading section.

As a preferred technical scheme of the utility model, put the silo and set up in the top one end surface that the material loading dish kept away from feeding cylinder, it is the circular arc groove to put the silo, the tailpiece of the piston rod portion who pushes away the material cylinder is equipped with the circular push pedal that is used for propelling movement metal pipe fitting, circular push pedal and circular arc groove clearance fit, the length of putting the silo is greater than square unloading section and pushes away the length between the piston rod axial of material cylinder.

As the utility model discloses a preferred technical scheme, high frequency pipe end heating mechanism includes high-frequency machine, base and induction heating coil, is equipped with the heating chamber in the base, and induction heating coil sets up in the heating chamber, and the high-frequency machine is connected with the induction heating coil wire, and the heating chamber all is greater than metal pipe fitting's diameter with induction heating coil's diameter.

As an optimal technical scheme of the utility model, draw the mechanism including draw mould and driving motor, driving motor installs on the workstation, draw mould fixed connection in driving motor's output shaft tip, the inside of draw mould is equipped with and is used for the fashioned shaping groove of metal pipe fitting pipe end throat.

As a preferred technical proposal of the utility model, the transmission mechanism consists of a Y-axis ball screw guide rail, a mounting plate, an X-axis chute, an X-axis driving cylinder, a slider, a clamp, an oil cylinder, a pipe feeding cylinder and an inner pipe, the Y-axis ball screw guide rail is arranged on a worktable and corresponds between an automatic blanking mechanism and a high-frequency pipe end heating mechanism, the mounting plate is connected with the top of a sliding table of the Y-axis ball screw guide rail, the mounting plate is provided with the X-axis chute which is axially consistent with a piston rod of the material pushing cylinder, the slider is in sliding fit with the X-axis chute, the X-axis driving cylinder is fixedly arranged on the axial end side of the mounting plate corresponding to the X-axis chute, the end part of the piston rod of the X-axis driving cylinder is fixedly connected with the slider, the clamp is fixedly arranged at the top, the oil cylinder is fixedly arranged at one end, far away from the X-axis sliding groove, of the pushing cylinder, the pipe feeding cylinder is fixedly arranged at the end part of a hydraulic rod of the oil cylinder, and the inner pipe is fixedly connected to the end part of a piston rod of the pipe feeding cylinder.

As a preferred technical scheme of the utility model, the folder comprises clamping base, die clamping cylinder and clamp splice, and clamping base's inside is equipped with the tight chamber of clamp with the coaxial setting of piston rod that pushes away the material cylinder, and die clamping cylinder is provided with two, and two die clamping cylinder symmetries are inlayed and are installed on clamping base's both sides wall, and a convex clamp splice is connected respectively to two die clamping cylinder's piston rod through clamping base and the one end that extends to the tight intracavity of clamp.

(III) advantageous effects

Compared with the prior art, the utility model provides a numerical control capper for metal tube possesses following beneficial effect:

this numerical control capper for tubular metal resonator collects automatic feeding, seal end heating, seal end throat processing and seals welding automation structure in an organic whole, compares with prior art, need not to adopt end cap or closing cap to carry out the tubular metal resonator and seal, has reduced tubular metal resonator and has sealed the processing cost, has guaranteed the leakproofness of pipe fitting port, seals the effect good, and has greatly improved machining efficiency, is applicable to big batch tubular metal resonator production and processing, and the practicality is strong.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of the automatic blanking mechanism of the present invention;

FIG. 3 is a schematic structural view of the pipe contracting mechanism of the present invention;

fig. 4 is a schematic structural diagram of the middle transmission mechanism of the present invention.

In the figure: 1. a work table; 2. an automatic blanking mechanism; 201. a blanking box; 202. a square blanking section; 203. a feeding cylinder; 204. a material bearing disc; 2041. a material placing groove; 205. a material pushing cylinder; 3. a high-frequency pipe end heating mechanism; 4. a pipe contracting mechanism; 401. pipe shrinking mold; 4011. forming a groove; 402. a drive motor; 5. a spot welding mechanism; 6. a transmission mechanism; 601. a Y-axis ball screw guide; 602. mounting a plate; 6021. an X-axis chute; 603. an X-axis driving cylinder; 604. a slider; 605. a clamp; 606. an oil cylinder; 607. a pipe conveying cylinder; 608. an inner tube; 7. a control panel; 8. a metal pipe fitting.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Examples

Referring to fig. 1-4, the present invention provides the following technical solutions: a numerical control sealing machine for metal tubes comprises a workbench 1, an automatic blanking mechanism 2, a high-frequency tube end heating mechanism 3, a tube shrinking mechanism 4, a spot welding mechanism 5, a transmission mechanism 6 and a control panel 7, wherein the automatic blanking mechanism 2 comprises a blanking box 201, a square blanking section 202, a feeding cylinder 203, a material bearing disc 204 and a material pushing cylinder 205, the blanking box 201 is fixedly arranged on the workbench 1 through a support frame, the square blanking section 202 is connected to the bottom discharging end of the blanking box 201, the feeding cylinder 203 is fixedly arranged on one side of the bottom of the blanking box 201 through a first fixing frame, the material bearing disc 204 is connected to the end part of a piston rod of the feeding cylinder 203, the material bearing disc 204 is provided with a material placing groove 2041 for containing metal tubes 8, the material pushing cylinder 205 is fixedly arranged on one side of the support frame through a second fixing frame, the axial direction of the piston rod of the material pushing cylinder 205 is, the high-frequency pipe end heating mechanism 3, the pipe contracting mechanism 4 and the spot welding mechanism 5 are sequentially arranged on the workbench 1 at intervals in parallel, the high-frequency pipe end heating mechanism 3 and the material pushing cylinder 205 are arranged in parallel, the high-frequency pipe end heating mechanism 3, the pipe contracting mechanism 4 and the spot welding mechanism 5 are respectively used for high-frequency heating of the sealing end of the metal pipe 8, pipe end necking processing and sealing welding, and the transmission mechanism 6 is used for transferring the metal pipe 8 supplied by the automatic blanking mechanism 2 to the heating stations, the pipe end necking stations and the welding stations corresponding to the high-frequency pipe end heating mechanism 3, the pipe contracting mechanism 4 and the spot welding mechanism 5 in sequence.

In this embodiment, a gap is formed between the square blanking section 202 and the material receiving tray 204, the metal pipe 8 positioned at the lowest part of the square blanking section 202 is placed in the material placing groove 2041, and the material receiving tray 204 is driven to move transversely under the action of the feeding cylinder 203, so that the metal pipe 8 in the square blanking section 202 moves downwards by a forward height (the diameter of the metal pipe 8) and keeps a non-falling state while the metal pipe 8 in the material placing groove 2041 is moved, so that the metal pipe can be blanked in sequence conveniently, and the feeding cylinder 203 drives the material receiving tray 204 to reset after feeding is completed; the control panel 7 is arranged at the edge of the front end of the top of the workbench 1, the control panel 7 comprises a PLC controller and a control switch assembly electrically connected with the PLC controller, and the PLC controller is respectively controlled by the feeding cylinder 203, the pushing cylinder 205, the high-frequency electric element of the high-frequency pipe end heating mechanism 3, the driving motor of the pipe contracting mechanism 4, the driving motor of the spot welding mechanism 5, the driving hydraulic part and each cylinder of the transmission mechanism 6.

Specifically, the bottom end of the blanking box 201 is set to be bucket-shaped, the side length of the inner walls of the blanking box 201 and the square blanking section 202 is matched with the length of the metal pipe 8, and the width and the length of the inner wall of the square blanking section 202 are matched with the width and the length of the metal pipe 8.

In this embodiment, the above structure is arranged to achieve the purpose of facilitating blanking.

Specifically, the material placing groove 2041 is arranged on the surface of one end of the top of the material bearing disc 204, which is far away from the feeding cylinder 203, the material placing groove 2041 is an arc-shaped groove, a circular pushing plate for pushing the metal pipe 8 is arranged at the end of a piston rod of the material pushing cylinder 205, the circular pushing plate is in clearance fit with the arc-shaped groove, and the length of the material placing groove 2041 is greater than the axial length of the piston rod of the material pushing cylinder 205 from the square blanking section 202.

In this embodiment, during operation, the feeding cylinder 203 drives the metal pipe 8 in the material placing groove 2041 to move forward to a position coaxial with the piston rod of the material pushing cylinder 205, the circular push plate at the end of the piston rod of the material pushing cylinder 205 pushes the metal pipe 8 in the material placing groove 2041, and the transmission mechanism 6 is matched to complete the blanking and transferring of the metal pipe 8.

Specifically, high frequency pipe end heating mechanism 3 includes high frequency machine, base and induction heating coil, is equipped with the heating chamber in the base, and induction heating coil sets up in the heating chamber, and the high frequency machine is connected with induction heating coil wire, and the diameter of heating chamber and induction heating coil all is greater than the diameter of metal pipe fitting 8.

In this embodiment, the working principle of the high-frequency tube end heating mechanism 3 is as follows: a high-frequency large current of the high-frequency machine flows to the induction heating coil, thereby generating a strong magnetic beam whose polarity changes instantaneously in the coil, the magnetic beam penetrates the entire end portion of the metal pipe 8, a large eddy current is generated in the heated metal pipe 8 in a direction opposite to the heating current, and a large amount of joule heat is generated due to the resistance in the heated object, so that the temperature of the object itself is rapidly increased, and the purpose of heating the metal pipe 8 is achieved.

Specifically, the pipe reducing mechanism 4 comprises a pipe reducing mold 401 and a driving motor 402, the driving motor 402 is installed on the workbench 1, the pipe reducing mold 401 is fixedly connected to the end portion of an output shaft of the driving motor 402, and a forming groove 4011 for forming a pipe end necking of the metal pipe fitting 8 is formed in the pipe reducing mold 401.

In this embodiment, during operation, under the effect of the transmission mechanism 6, the port heated at high temperature of the metal pipe 8 is pushed into the forming groove 4011 and generates a certain pressure, the driving motor 402 operates to drive the pipe contracting mold 401 to rotate, and the process of reducing the port of the metal pipe 8 is gradually completed in the rotating process of the pipe contracting mold 401.

Specifically, the transmission mechanism 6 is composed of a Y-axis ball screw guide rail 601, a mounting plate 602, an X-axis slide groove 6021, an X-axis driving cylinder 603, a slider 604, a clamp 605, an oil cylinder 606, a tube feeding cylinder 607 and an inner tube 608, the Y-axis ball screw guide rail 601 is mounted on the worktable 1 corresponding to the position between the automatic blanking mechanism 2 and the high-frequency tube end heating mechanism 3, the mounting plate 602 is connected to the top of the slide table of the Y-axis ball screw guide rail 601, the mounting plate 602 is provided with the X-axis slide groove 6021 axially consistent with the piston rod of the material feeding cylinder 205, the slider 604 is in sliding fit with the X-axis slide groove 6021, the X-axis driving cylinder 603 is fixedly mounted on the axial end side of the mounting plate 602 corresponding to the X-axis slide groove 6021, the end of the piston rod of the X-axis driving cylinder 603 is fixedly connected with the slider 604, the, the oil cylinder 606 is fixedly arranged at one end of the pushing cylinder 205 far away from the X-axis sliding groove 6021, the pipe feeding cylinder 607 is fixedly arranged at the end part of a hydraulic rod of the oil cylinder 606, and the inner pipe 608 is fixedly connected to the end part of a piston rod of the pipe feeding cylinder 607.

In the embodiment, during operation, firstly, the Y-axis ball screw guide rail 601 works, the mounting plate 602 and the clamp 605 thereon are moved to and coaxially arranged between the piston rod of the pushing cylinder 205 and the high-frequency tube end heating mechanism 3, the pushing cylinder 205 pushes the metal tube 8 to place the tail end of the metal tube 8 in the clamping cavity of the clamp 605, the clamping cylinder on the clamp 605 drives the clamping block to complete the clamping operation of the metal tube 8, then the X-axis driving cylinder 603 pushes the sliding block 604 to slide along the X-axis sliding chute 6021 until the end to be sealed of the metal tube 8 is placed in the heating cavity of the high-frequency tube end heating mechanism 3, the high-frequency machine works to enable the induction heating coil to generate a strong magnetic beam with instantly changed polarity, the induction heating coil realizes the heating operation of the end to be sealed, after the heating is completed, the X-axis driving cylinder 603 drives the sliding block 604 and the clamp 605 to reset, the mounting plate 602 and the clamp 605 thereon are driven to move to the coaxial position of the metal pipe 8 which is heated at the end to be sealed and the forming groove 4011 of the pipe shrinking mechanism 4, the X-axis driving cylinder 603 drives the slide block 604 to slide along the X-axis sliding groove 6021 until the end to be sealed of the metal pipe 8 is arranged in the forming groove 4011, the pipe shrinking mold 401 is rotated under the work of the driving motor 402, the necking processing of the port of the metal pipe 8 is gradually completed in the rotating process of the pipe shrinking mold 401, the X-axis driving cylinder 603 drives the slide block 604 and the clamp 605 to reset after the necking processing is completed, the servo motor of the Y-axis ball screw guide rail 601 continues working, the mounting plate 602 and the clamp 605 thereon are driven to move to the position where the axial direction of the metal pipe 8 which is subjected to the necking processing is consistent with the welding station X-axis of the spot welding mechanism 5, and then the X-axis driving cylinder 603 drives the slide block 604 to slide along the X-, and finally, completing necking welding work by the spot welding mechanism 5, namely completing the sealing operation of the metal pipe fitting 8.

Specifically, the clamping member 605 is composed of a clamping base, two clamping cylinders and clamping blocks, a clamping cavity coaxial with the piston rod of the material pushing cylinder 205 is arranged in the clamping base, the two clamping cylinders are symmetrically embedded in two side walls of the clamping base, and one ends of the piston rods of the two clamping cylinders, which penetrate through the clamping base and extend into the clamping cavity, are respectively connected with one arc-shaped clamping block.

The utility model discloses a theory of operation and use flow: when the device works, the control panel 7 starts the device, firstly, the Y-axis ball screw guide rail 601 works to move the mounting plate 602 and the clamp 605 on the mounting plate to be coaxial with and between the piston rod of the pushing cylinder 205 and the high-frequency tube end heating mechanism 3, then the feeding cylinder 203 drives the metal tube 8 in the material placing groove 2041 to move forward to a position coaxial with the piston rod of the pushing cylinder 205, the circular push plate at the end part of the piston rod of the pushing cylinder 205 pushes the metal tube 8 in the material placing groove 2041 until the tail end of the metal tube 8 is placed in the clamping cavity of the clamp 605, the clamping cylinder on the clamp 605 drives the clamping block to complete the clamping operation of the metal tube 8, then the X-axis driving cylinder 603 pushes the slide block 604 to slide along the X-axis sliding groove 6021 until the end to be sealed of the metal tube 8 is placed in the heating cavity of the high-frequency tube end heating mechanism 3, the high, the heating operation of the end to be sealed is realized by an induction heating coil, after the heating is finished, the X-axis driving cylinder 603 drives the sliding block 604 and the clamping piece 605 to reset, the servo motor of the Y-axis ball screw guide rail 601 continues to work, the mounting plate 602 and the clamping piece 605 on the mounting plate are driven to move to the position where the metal pipe fitting 8 to be sealed and the forming groove 4011 of the pipe shrinking mechanism 4 are coaxial, the X-axis driving cylinder 603 drives the sliding block 604 to slide along the X-axis sliding groove 6021 to the end to be sealed of the metal pipe fitting 8 to be arranged in the forming groove 4011, the pipe shrinking mold is rotated under the work of the driving motor of the pipe shrinking mechanism 4, the necking processing of the end of the metal pipe fitting 8 is gradually finished in the rotating process of the pipe shrinking mold, the X-axis driving cylinder 603 drives the sliding block 604 and the clamping piece 605 to reset after the necking processing is finished, the servo motor of the Y-axis ball screw guide rail 601 continues to work, the mounting plate 602 and the And at the position with the same axial direction, the X-axis driving cylinder 603 pushes the sliding block 604 to slide along the X-axis sliding groove 6021 until the end to be sealed of the metal pipe fitting 8 is positioned on a welding station, finally, the spot welding mechanism 5 finishes the necking welding work, namely, the sealing operation of the metal pipe fitting 8 is finished, and the operations are repeated, so that the continuous automatic feeding and sealing processing operation of the metal pipe fitting 8 can be carried out.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a numerical control capper for tubular metal resonator which characterized in that: including workstation (1), automatic unloading mechanism (2), high frequency pipe end heating mechanism (3), draw pipe mechanism (4), spot welding mechanism (5), drive mechanism (6) and control panel (7), wherein, automatic unloading mechanism (2) comprises unloading case (201), square unloading section (202), feeding cylinder (203), holding dish (204) and pushing away material cylinder (205), unloading case (201) is through support frame fixed mounting on workstation (1), square unloading section (202) is connected on the bottom discharge end of unloading case (201), feeding cylinder (203) is through first mount fixed mounting in the bottom one side of unloading case (201), holding dish (204) are connected in the piston rod end portion of feeding cylinder (203), be equipped with on holding dish (204) and be used for holding put silo (2041) of metal pipe fitting (8), the material pushing cylinder (205) is fixedly installed on one side of the supporting frame through a second fixing frame, the axial direction of a piston rod of the material pushing cylinder (205) is perpendicular to the axial direction of a piston rod of the material feeding cylinder (203), the high-frequency pipe end heating mechanism (3), the pipe shrinking mechanism (4) and the spot welding mechanism (5) are sequentially arranged on the workbench (1) at intervals in parallel, the high-frequency pipe end heating mechanism (3) and the material pushing cylinder (205) are arranged side by side, the high-frequency pipe end heating mechanism (3), the pipe shrinking mechanism (4) and the spot welding mechanism (5) are respectively used for high-frequency heating of a sealing end of a metal pipe (8), pipe end necking processing and sealing welding, the transmission mechanism (6) is used for transferring the metal pipe (8) supplied by the automatic blanking mechanism (2) to a heating station corresponding to the high-frequency pipe end heating mechanism (3), the pipe shrinking mechanism (4) and, The pipe end necking station and the welding station.

2. The numerical control sealing machine for the metal tubes as claimed in claim 1, wherein: the bottom end of the blanking box (201) is arranged to be hopper-shaped, the side length of the inner walls of the blanking box (201) and the square blanking section (202) is matched with the pipe length of the metal pipe fitting (8), and the width and the length of the inner wall of the square blanking section (202) are matched with the width and the length of the metal pipe fitting (8).

3. The numerical control sealing machine for the metal tubes as claimed in claim 1, wherein: put silo (2041) and set up in the top one end surface that the pay-off cylinder (203) was kept away from in holding dish (204), put silo (2041) and be the circular arc groove, the piston rod tip that pushes away material cylinder (205) is equipped with the circular push pedal that is used for propelling movement metal pipe spare (8), circular push pedal and circular arc groove clearance fit, the length of putting silo (2041) is greater than square unloading section (202) and pushes away the axial length between of the piston rod that material cylinder (205).

4. The numerical control sealing machine for the metal tubes as claimed in claim 1, wherein: the high-frequency pipe end heating mechanism (3) comprises a high-frequency machine, a base and an induction heating coil, wherein a heating cavity is arranged in the base, the induction heating coil is arranged in the heating cavity, the high-frequency machine is connected with an induction heating coil through a lead, and the diameters of the heating cavity and the induction heating coil are larger than the diameter of the metal pipe fitting (8).

5. The numerical control sealing machine for the metal tubes as claimed in claim 1, wherein: the pipe reducing mechanism (4) comprises a pipe reducing mold (401) and a driving motor (402), the driving motor (402) is installed on the workbench (1), the pipe reducing mold (401) is fixedly connected to the end portion of an output shaft of the driving motor (402), and a forming groove (4011) for forming a pipe end reducing opening of the metal pipe fitting (8) is formed in the pipe reducing mold (401).

6. The numerical control sealing machine for the metal tubes as claimed in claim 1, wherein: the transmission mechanism (6) consists of a Y-axis ball screw guide rail (601), a mounting plate (602), an X-axis sliding groove (6021), an X-axis driving air cylinder (603), a sliding block (604), a clamping piece (605), an oil cylinder (606), a tube feeding air cylinder (607) and an inner tube (608), the Y-axis ball screw guide rail (601) is mounted between the automatic blanking mechanism (2) and the high-frequency tube end heating mechanism (3) on the workbench (1) correspondingly, the mounting plate (602) is connected to the top of the sliding table of the Y-axis ball screw guide rail (601), the mounting plate (602) is provided with an X-axis sliding groove (6021) which is axially consistent with a piston rod of the material pushing air cylinder (205), the sliding block (604) is in sliding fit with the X-axis sliding groove (6021), the X-axis driving air cylinder (603) is fixedly mounted on the axial end side of the mounting plate (602) corresponding to the X-axis sliding groove (6021), and the end part of the piston, the clamping piece (605) is fixedly installed at the top of the sliding block (604), the clamping piece (605) is used for automatically clamping the metal pipe fitting (8) pushed by the material pushing cylinder (205), the oil cylinder (606) is fixedly installed at one end, far away from the X-axis sliding groove (6021), of the material pushing cylinder (205), the pipe conveying cylinder (607) is fixedly installed at the end portion of a hydraulic rod of the oil cylinder (606), and the inner pipe (608) is fixedly connected to the end portion of a piston rod of the pipe conveying cylinder (607).

7. The numerical control sealing machine for the metal tubes as claimed in claim 6, wherein: the clamping piece (605) is composed of a clamping base, two clamping cylinders and clamping blocks, a clamping cavity which is coaxial with a piston rod of the material pushing cylinder (205) is arranged in the clamping base, the two clamping cylinders are symmetrically embedded on two side walls of the clamping base, and one ends, extending into the clamping cavity, of the piston rods of the two clamping cylinders penetrate through the clamping base and are respectively connected with the arc-shaped clamping blocks.