A tube body drawing die equipment for a non-negative pressure pipeline

Abstract

The present invention relates to a tube body drawing die equipment for a non-negative pressure pipeline, which includes a punching component, an external tube die component and an internal tube pressing component; the external tube die component and the internal tube pressing component respectively abut against the tube body from the outside and the inside; the punching component is located above the external tube die component, the external tube die component is provided with a first die opening corresponding to the punching component, and the internal tube pressing component is provided with a second die opening corresponding to the punching component; the internal tube pressing component includes a flanging ejector post vertically arranged inside it, and the external tube die component is provided with a third die opening corresponding to the flanging ejector post. The equipment provided by this application can punch and flange the side of the tube body to form a transition table, and the tube hole on the side of the tube body is connected to the bottom of the flange pipe fitting through the transition table to achieve flat connection, avoiding cutting the intersection line on the arc surface of the tube body; at the same time, the cut of the joint formed by this method is flat, the structure of the welded joint is tight, the risk of water seepage and rust is small, and the service life of the pipe fitting is long.

Description

Technical Field

[0001] The present invention relates to the technical field of non-negative pressure pipeline processing, and in particular to a tube body drawing die device for a non-negative pressure pipeline. Background Art

[0002] A non-negative pressure pipeline is a pressurization device directly connected to the tap water pipe network. It directly superimposes and pressurizes water on the basis of the municipal pipe network pressure, and is a secondary water supply device that will not cause side effects to the tap water pipe network. The non-negative pressure pipeline consists of multiple components such as a steady flow tank, a pressure tank, a water pump, etc., and each component is connected through the tube body of the non-negative pressure pipeline. As Figure 1 shown, the tube body of the non-negative pressure pipeline is connected to each component in the non-negative pressure pipeline through flanges welded at its ends and flange pipe fittings on the side; among them, multiple flange pipe fittings welded on the side of the tube body are spaced along the length direction of the tube body, and multiple flange pipe fittings all face the same radial direction of the tube body.

[0003] In the prior art, when welding flange pipe fittings to the side of the tube body, it is first necessary to cut the intersection line on the side of the tube body and the bottom of the flange pipe fitting respectively, and then align the intersection lines of the two for welding. It is difficult to cut the intersection line on the arc surface, the cutting efficiency is low, and it is easy to have an uneven cut, which affects the welding; at the same time, cutting the intersection line on the arc surface is very likely to damage the structure at the connection position between the tube body and the flange pipe fitting, resulting in water seepage and rust at the connection during use, affecting the service life of the pipeline. Therefore, the present application provides a tube body drawing die device for a non-negative pressure pipeline to solve the above problems. Summary of the Invention

[0004] In order to improve the problems in the background art, the present invention provides a tube body drawing die device for a non-negative pressure pipeline, including a tube hole processing mechanism; the tube hole processing mechanism includes a first body, and the first body includes a punching component, an external tube die component and an internal tube pressing component arranged inside it; the external tube die component includes an outer die shell and a tube body die cavity surrounded by the outer die shell; the tube body die cavity penetrates through the middle of the outer die shell along the x-axis direction, and the tube body die cavity is adapted to the outer side surface of the tube body without a tube; the internal tube pressing component coaxially penetrates through the tube body die cavity, and the internal tube pressing component is adapted to the inner side surface of the tube body; the punching component is located above the external tube die component.

[0005] The tube body of the non-negative pressure pipeline enters the device along the x-axis direction, the tube body penetrates through the tube body die cavity of the external tube die component along its length direction, and the internal tube pressing component penetrates through the tube cavity of the tube body; the external tube die component and the internal tube pressing component respectively clamp and fix the tube body from the outside and inside of the tube body.

[0006] Preferably, the punching assembly includes a punching cutter column; the punching cutter column extends vertically, and its top is connected to a punching cylinder; the punching cylinder is fixed to the first body, and its output shaft is parallel to the vertical direction; a first die opening is vertically formed at the top of the outer die housing; the inner pipe pressing assembly includes a pressing main body, and a second die opening is vertically formed at the top of the pressing main body; the first die opening communicates with the second die opening, both of which correspond to the punching cutter column, and the inner diameters of both are equal to the cross-sectional diameter of the punching cutter column.

[0007] The punching cylinder can drive the punching cutter column to move in the vertical direction. When punching the side of the pipe body, the punching cylinder drives the punching cutter column to descend; the punching cutter column can just pass through the first die opening, and its side is closely attached to the inner side of the first die opening; after the punching cutter column passes through the first die opening, the bottom of the punching cutter column abuts against the side of the pipe body, and the part of the pipe body side corresponding to the first die opening and the second die opening is subjected to the combined action of the punching cutter column, the outer die housing, and the pressing main body. When the punching cutter column continues to descend and just passes through the second die opening, the part of the pipe body side corresponding to the first die opening and the second die opening is cut to form a pipe hole.

[0008] Preferably, the inner pipe pressing assembly further includes a flanging top column vertically arranged inside the pressing main body; the bottom of the flanging top column is connected to a flanging cylinder; the flanging cylinder is fixed to the pressing main body, and its output shaft extends vertically; a third die opening corresponding to the flanging top column is vertically formed at the top of the outer die housing; the radius of the third die opening is larger than the radius of the first die opening, and the radius of the third die opening is equal to the sum of the radius of the flanging top column and the wall thickness of the pipe body; the axis of the flanging top column coincides with the axis of the punching cutter column in the y-axis direction.

[0009] After the pipe body is punched to form a pipe hole, the pipe body moves along the x-axis direction, and the pipe hole is moved above the flanging top column. At this time, the pipe hole, the flanging top column, and the third die opening are coaxially corresponding. The flanging cylinder drives the flanging top column to move vertically upward, and presses the part around the edge of the pipe hole into the third die opening to form a connecting part with a horizontal top surface, that is, a flat-mouth transition table. The side of the pipe body is welded to the flange pipe fitting with the flat-mouth transition table, avoiding cutting the intersection line on the arc surface of the pipe body side. At the same time, the flat top surface of the transition table is adapted to the bottom of the flange pipe fitting, also avoiding cutting the intersection line on the flange pipe fitting; through this flat-mouth transition table, the pipe hole on the side of the pipe body realizes a flat-mouth connection with the flange pipe fitting, which is beneficial to improving the welding efficiency; and the cut at the flat-mouth welding part is flat and the structure is tight, which can prevent water seepage and rust, thereby extending the service life of the pipe fitting.

[0010] Preferably, one side end of the pressing main body is connected to the first fuselage through a storage assembly; the storage assembly includes a pipe-passing cylinder, a first storage base, a second storage base, and a first servo drive unit; the pipe-passing cylinder is fixed to the top of the first storage base, its output shaft is parallel to the x-axis direction, and its output end is connected to the pressing main body through a string connecting rod extending along the x-axis direction; a vertically extending rack is provided on the side of the first storage base close to the second storage base, the first servo drive unit is fixed to the side of the second storage base away from the first storage base, and the output end of the first servo drive unit penetrates the second storage base and is meshed with the rack through a gear; the second storage base is fixedly connected to the first fuselage.

[0011] The storage assembly can drive the lifting and movement along the x-axis direction of the pressing assembly inside the pipe. When the pipe body is waiting for punching and flanging, the first servo drive unit raises the first storage base until the pressing assembly inside the pipe is coaxial with the cavity of the pipe body. At this time, the pressing assembly inside the pipe is located outside the external pipe die assembly; the pipe-passing cylinder pushes the pressing assembly inside the pipe to extend into the cavity of the pipe body along the x-axis direction until the second die orifice of the pressing assembly inside the pipe corresponds to the first die orifice and the flanging ejector pin corresponds to the third die orifice; the pipe body enters the equipment along the x-axis and is sleeved on the pressing assembly inside the pipe and the string connecting rod. The setting of the string connecting rod enables the pipe body to move along the x-axis direction, and thus punching and flanging are carried out evenly at intervals along the length direction on its side; after the punching and flanging of the pipe body are completed, in order to facilitate the movement of the pipe body along the x-axis direction to the next mechanism for subsequent processing, the output end of the pipe-passing cylinder contracts, the pressing assembly inside the pipe leaves the cavity of the pipe body and the cavity of the pipe body die, and the first servo drive unit drives the first storage base to fall until the top ends of the pressing assembly inside the pipe, the string connecting rod, and the pipe-passing cylinder are not higher than the bottom end of the pipe body, preventing the movement of the pipe body along the x-axis direction from being blocked.

[0012] Preferably, the outer die shell is formed by splicing two shell units, and the two shell units are symmetrically arranged along the y-axis direction; the outer sides of the two shell units away from each other are respectively connected to the output ends of two outer die cylinders; the outer die cylinders are fixedly connected to the first fuselage, their output shafts are parallel to the y-axis direction, and the output ends of the two outer die cylinders are arranged oppositely.

[0013] When the output ends of the outer die cylinders contract, the two shell units separate and the distance between them becomes larger, facilitating the position adjustment of the pipe body along the x-axis direction between the two shell units. When the pipe body is sleeved between the two shell units and is in an appropriate position, the output ends of the two outer die cylinders extend, and the notch between the two shell units is spliced into the cavity of the pipe body die, and the two shell units firmly clamp the outer side of the pipe body.

[0014] Preferably, it further includes a tube hole polishing mechanism, and the tube hole polishing mechanism includes a second body; the second body includes a tube clamping assembly, a grindstone assembly and a vertically extending polishing slide rail arranged inside it; the tube clamping assembly and the external tube die assembly are distributed along the x-axis direction, and the tube clamping assembly is used to fix the tube body; the grindstone assembly includes a polishing console and a grindstone; the polishing console is movably connected to the polishing slide rail, and the grindstone is arranged below the polishing console; a second servo drive unit is fixed on the polishing console; the output shaft of the second servo drive unit extends vertically, and its output end is key-connected to the top end of the grindstone.

[0015] Preferably, it further includes a base and a chuck mechanism; a base slide rail is arranged on the upper surface of the base along the x-axis direction; the chuck mechanism, the tube hole processing mechanism and the tube hole polishing mechanism are sequentially movably connected to the base slide rail along the x-axis direction.

[0016] Preferably, it further includes a cutting mechanism; the cutting mechanism includes a first cutting base, a second cutting base and a circular cutting tool; the second cutting base is fixed on the upper surface of the base, and it is located between the chuck mechanism and the tube hole processing mechanism; the first cutting base is movably connected to the second cutting base in the vertical direction; a fourth servo drive unit is fixedly arranged on the top surface of the first cutting base, the output shaft of the fourth servo drive unit extends along the x-axis direction, and the output end of the fourth servo drive unit is key-connected to the rotating shaft of the circular cutting tool.

[0017] Preferably, it further includes a support and centering mechanism; the support and centering mechanism includes two support and centering members, and the two support and centering members are respectively located on both sides of the cutting mechanism; a centering groove is formed through the top end of the support and centering member along the x-axis direction, the centering groove is a symmetric structure along the y-axis direction, and the depth of the centering groove gradually increases from both ends to the middle; along the x-axis direction, the centering grooves of the two support and centering members correspond to each other.

[0018] Preferably, the centering groove includes two groove side walls symmetric along the y-axis direction, and both of the two groove side walls are perpendicular to the x-axis direction; a ball seat is perpendicularly fixed on the groove side wall, and the ball seats on the two groove side walls of the same centering groove are symmetrically arranged; a seat head accommodating cavity is formed on the top surface of the ball seat, and a ball is clamped in the seat head accommodating cavity; the top end of the ball protrudes beyond the top surface of the ball seat. The ball abuts against and rolls to support the tube body, and can reduce the resistance when the tube body moves along the x-axis direction.

[0019] In summary, the present application has the following beneficial effects:

[0020] A tube body drawing die device for a non-negative pressure pipeline provided by the present application, after punching holes on the side of the tube body, turns the tube holes outwards through a hole-turning ejector pillar to form an adapter platform for connecting with a flange pipe fitting; the top surface of the adapter platform is a horizontal circular flat mouth structure, and the circular flat mouth of the adapter platform is adapted to the bottom of the flange pipe fitting, avoiding cutting the intersection line on the arc surface of the side of the tube body, which is beneficial to improving the welding efficiency; the incision at the welding joint between the tube hole on the side of the tube body and the flange pipe fitting is flat and the structure is tight, which can prevent water seepage and rust, thereby extending the service life of the pipe fitting. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of a non-negative pressure pipeline.

[0022] Figure 2 is a schematic structural diagram of a tube body drawing die device for a non-negative pressure pipeline of the present application.

[0023] Figure 3 in Figure 2 is a partial enlarged schematic diagram of part A in.

[0024] Figure 4 in Figure 2 is a partial enlarged schematic diagram of part B in.

[0025] Figure 5 is a schematic structural diagram of a chuck mechanism in the present application for clamping a tube body.

[0026] Figure 6 is a cross-sectional view of a tube hole processing mechanism before punching in the present application.

[0027] Figure 7 is a cross-sectional view of a tube hole processing mechanism during punching in the present application.

[0028] Figure 8 is a cross-sectional view of a tube hole processing mechanism before hole turning in the present application.

[0029] Figure 9 is a cross-sectional view of a tube hole processing mechanism during hole turning in the present application.

[0030] Figure 10 is a schematic structural diagram of an outer mold shell formed by splicing two shell units in the present application.

[0031] Figure 11 is a schematic structural diagram of a tube body of a non-negative pressure pipeline in the present application.

[0032] Description of reference numerals: 11. First base portion; 111. First base slide rail; 12. Second base portion; 121. Second base slide rail; 122. Base accommodation cavity; 21. First fuselage; 22. Punching cutter post; 23. Punching cylinder; 24. Housing unit; 241. Pipe body die cavity; 242. First die orifice; 243. Third die orifice; 25. Outer die cylinder; 26. Pressing main body; 261. Second die orifice; 262. Punching post channel; 263. Flanging punching post; 264. Flanging cylinder; 271. First storage base; 272. Second storage base; 273. String connecting rod; 274. Pipe threading cylinder; 31. Second fuselage; 32. Pipe clamping unit; 321. Pipe clamping cavity; 33. Pipe clamping cylinder; 34. Grinding stone; 35. Polishing console; 36. Second servo drive unit; 4. Chuck mechanism; 51. First cutting base; 52. Second cutting base; 53. Circular cutting tool; 54. Support centering member; 541. Centering groove; 542. Ball seat; 543. Ball; 6. Pipe body without negative pressure pipeline; 61. Pipe hole; 62. Adapter table. Detailed implementation manners

[0033] The following further describes the present invention in detail with reference to the Figures 1-11 For convenience of description below, the "upper", "lower", "left", "right", etc. referred to are consistent with the upper, lower, left, right, etc. of the attached drawings themselves. The "first", "second", etc. in the following text are for distinction in description and have no other special meanings.

[0034] Referring to Figures 1-11 , this embodiment provides a pipe body demoulding device for a non-negative pressure pipeline, including a pipe hole processing mechanism, a pipe hole polishing mechanism, a chuck mechanism 4 and a base.

[0035] The chuck mechanism 4 includes a three-jaw self-centering chuck. The chuck mechanism 4, the pipe hole processing mechanism, and the pipe hole polishing mechanism are sequentially distributed along the x-axis direction.

[0036] The base is composed of two parts, namely a first base portion 11 and a second base portion 12. The upper surface height of the first base portion 11 is less than the upper surface height of the second base portion 12; such a height setting is to adapt to the height of the three-jaw self-centering chuck, so that after the three-jaw self-centering chuck clamps the pipe body, the axis of the pipe body coincides with the axis of the pipe body die cavity 241 and the axis of the pipe clamping cavity 321.

[0037] The upper surface of the first base portion 11 is provided with a first base slide rail 111 extending along the x-axis direction. The chuck mechanism 4 is movably connected to the first base slide rail 111, and the chuck mechanism 4 moves on the first base slide rail 111 under the control of the chuck drive unit.

[0038] On the upper surface of the second base portion 12, a second base slide rail 121 is provided along the x-axis direction. The pipe hole machining mechanism and the pipe hole polishing mechanism are respectively movably connected to the second base slide rail 121. The pipe hole machining mechanism moves on the second base slide rail 121 under the control of the machining drive unit, and the pipe hole polishing mechanism moves on the second base slide rail 121 under the control of the polishing drive unit.

[0039] The pipe hole machining mechanism includes a first body 21. The first body 21 includes a punching component, an external pipe die component, and an internal pipe pressing component provided inside it. The external pipe die component includes an outer die shell and a pipe body die cavity 241 surrounded by the outer die shell. The pipe body die cavity 241 penetrates through the middle of the outer die shell along the x-axis direction, and the pipe body die cavity 241 is adapted to the outer side surface of the non-negative pressure pipeline body. The internal pipe pressing component coaxially penetrates through the pipe body die cavity 241 and is adapted to the inner side surface of the pipe body. The top of the punching component is connected to the first body and is located above the external pipe die component.

[0040] The punching component includes a punching cutter post 22. The punching cutter post 22 extends vertically, and its top is connected to a punching cylinder 23.

[0041] The punching cylinder 23 is fixed to the first body 21. The output shaft of the punching cylinder 23 extends vertically, and its output end faces vertically downward. The punching cylinder 23 can drive the punching cutter post 22 to move in the vertical direction.

[0042] The outer die shell is provided with a first die opening 242, and the first die opening 242 communicates with the pipe body die cavity 241. The internal pipe pressing component includes a pressing main body 26, and the pressing main body 26 is provided with a second die opening 261. The first die opening 242 and the second die opening 261 are in communication with each other, and they respectively correspond to the punching cutter post 22, and their inner diameters are both equal to the cross-sectional diameter of the punching cutter post 22.

[0043] When punching the side of the pipe body, the punching cylinder 23 drives the punching cutter post 22 to descend. The punching cutter post 22 can just pass through the first die opening 242, and its side surface is closely attached to the inner side surface of the first die opening 242. After the punching cutter post 22 passes through the first die opening 242, the bottom of the punching cutter post 22 abuts against the side of the pipe body. The part of the pipe body side corresponding to the first die opening 242 and the second die opening 261 is subjected to the combined action of the punching cutter post 22, the outer die shell, and the pressing main body 26. When the punching cutter post 22 continues to descend and just passes through the second die opening 261, the part of the pipe body side corresponding to the first die opening 242 and the second die opening 261 is punched open to form a pipe hole 61.

[0044] Reference Figures 6-7 , in order to improve the punching efficiency, in this embodiment, the bottom edge of the punching cutter post 22 is designed as a downwardly protruding blade part.

[0045] The outer mold housing is provided with a third mold opening 243, the third mold opening 243 communicates with the inner cavity of the pipe body, and the radius of the third mold opening 243 is larger than the radius of the first mold opening 242.

[0046] A top column channel 262 that penetrates through the third mold opening 243 is vertically opened at the top of the pressing main body 26. A hole-turning top column 263 is movably arranged in the top column channel 262, and the diameter of the top column channel 262 is equal to the diameter of the hole-turning top column 263; the hole-turning top column 263 corresponds to the third mold opening 243, and the radius of the third mold opening 243 is equal to the sum of the radius of the hole-turning top column 263 and the wall thickness of the pipe body; the axis of the hole-turning top column 263 coincides with the axis of the punching cutter column 22 in the y-axis direction; the bottom of the hole-turning top column 263 is connected to the output end of a hole-turning cylinder 264, and the hole-turning cylinder 264 is fixed inside the pressing main body 26, and its output shaft extends vertically.

[0047] One side end of the pressing main body 26 is connected to the first fuselage 21 through a storage assembly; the storage assembly includes a pipe-passing cylinder 274, a first storage base 271, a second storage base 272, and a first servo drive unit; the pipe-passing cylinder is fixed on the top of the first storage base 271, its output shaft is parallel to the x-axis direction, and its output end is connected to the pressing main body 26 through a string connecting rod 273 extending along the x-axis direction; a vertically extending rack is arranged on the side surface of the first storage base 271 close to the second storage base 272, the first servo drive unit is fixed on the side surface of the second storage base 272 far from the first storage base 271, the first servo drive unit includes a first servo motor, the output end of the first servo motor is connected to a speed reducer, and the output end of the speed reducer penetrates through the second storage base 272 along the x-axis direction and is meshed and connected to the rack through a gear; two storage sliders are symmetrically arranged on the side surface of the second storage base 272 close to the first storage base 271; the first storage base 271 is respectively provided with two storage slide rails adapted to the two storage sliders, and the two storage slide rails extend vertically. The second storage base 272 is fixedly connected to the first fuselage 21 and is located on the side of the external pipe mold assembly along the x-axis direction.

[0048] The storage assembly can drive the lifting and lowering of the inner tube pressing assembly and the movement along the x-axis. When the tube body is waiting for punching and turning, the No. 1 servo drive unit lifts the first storage base 271 until the inner tube pressing assembly is coaxial with the tube body mold cavity 241. At this time, the inner tube pressing assembly is located outside the external tube mold assembly. The pipe-penetrating cylinder pushes the inner tube pressing assembly into the tube body mold cavity along the x-axis to the No. 2 mold opening 261 corresponding to the No. 1 mold opening 242, and the turning ejector column 263 corresponding to the No. 3 mold opening 243; the tube body enters the equipment along the x-axis, and the tube body is sleeved on the inner tube pressing assembly and the connecting rod 273. The setting of the connecting rod 273 makes the tube body The tube body can move along the x-axis direction, and then the tube body is punched and turned at even intervals on its side along the length direction; when the punching and turning of the tube body are completed, in order to facilitate the tube body to move to the next mechanism along the x-axis direction for subsequent processing, the output end of the tube-penetrating cylinder shrinks, and the inner tube pressing component leaves the tube cavity of the tube body and the tube body mold cavity, and the No. 1 servo drive unit drives the first receiving base 271 to fall to the inner tube pressing component, the connecting rod 273, and the top of the tube-penetrating cylinder are not higher than the bottom end of the tube body to prevent the movement of the tube body along the x-axis from being hindered.

[0049] In this embodiment, the upper surface of the second base portion 12 defines a base accommodating cavity 122 along the x-axis, and the storage assembly is located in the base accommodating cavity 122. When the first storage base 271 is lowered to the non-operating state, the top ends of the in-tube pressing assembly, the connecting rod 273, and the through-tube cylinder 274 are all lower than the bottom end of the second body 31.

[0050] The outer mold shell is composed of two shell units 24, and the two shell units 24 are symmetrically arranged along the y-axis direction; the outer side surfaces of the shell units 24 away from each other are respectively connected to the output ends of the two outer mold cylinders; the outer mold cylinder 25 is fixedly connected to the first fuselage 21, and its output axis is parallel to the y-axis direction, and the output ends of the two outer mold cylinders are arranged opposite to each other.

[0051] The output end of the outer mold cylinder retracts, separating the two housing units 24. The increased distance between them facilitates adjustment of the tube body along the x-axis between the two housing units 24. When the tube body is properly positioned between the two housing units 24, the output end of the outer mold cylinder 25 extends, and the recess between the two housing units 24 forms the tube body mold cavity 241. The two housing units 24 securely clamp the outer surface of the tube body.

[0052] The tube hole polishing mechanism includes a second body 31 ; the second body 31 includes a tube clamping assembly, a grinding stone assembly, and a vertically extending polishing slide rail arranged therein.

[0053] The polishing slide rail is fixed to the second body 31 .

[0054] The pipe clamping assembly and the external pipe die assembly are distributed along the x-axis direction. The pipe clamping assembly is used to fix the pipe body. The pipe clamping assembly includes a pipe clamping housing and a pipe clamping cavity 321 surrounded by the pipe clamping housing. The pipe clamping cavity 321 penetrates through the middle of the pipe clamping housing along the x-axis direction; the pipe clamping cavity 321 is coaxially distributed with the pipe body die cavity 241; the pipe body penetrates through the pipe clamping cavity 321 along its length direction, and the pipe clamping cavity 321 is adapted to the outer surface of the pipe body. The pipe clamping housing is formed by splicing two pipe clamping units 32. The two pipe clamping units 32 are symmetrically arranged along the y-axis direction, and their outer sides away from each other are respectively connected to the output ends of two pipe clamping cylinders; the pipe clamping cylinders 33 are fixed to the second fuselage 31, the output shafts of the pipe clamping cylinders are parallel to the y-axis direction, and the output ends of the two pipe clamping cylinders are arranged oppositely.

[0055] The grinding stone assembly includes a polishing console 35, a grinding stone 34, and a second servo drive unit 36; the polishing console 35 is movably connected to the polishing slide rail, and the grinding stone 34 is arranged below the polishing console 35; the second servo drive unit 36 is fixed to the polishing console 35, and its output end is vertically downward; the second servo drive unit 36 includes a second servo motor, and the output end of the second servo motor is connected to a speed reducer; the top of the grinding stone 34 is key-connected to the output end of the speed reducer of the second servo drive unit 36.

[0056] The grinding stone 34 assembly and the pipe clamping assembly are staggered in the x-axis direction.

[0057] The pipe body demolding device of the non-negative pressure pipeline further includes a cutting mechanism. The cutting mechanism includes a first cutting base 51, a second cutting base 52, a third servo drive unit, a fourth servo drive unit, and a circular cutting tool 53; the second cutting base 52 is fixed to the upper surface of the first base portion 11, which is located between the chuck mechanism 4 and the pipe hole processing mechanism, and the second cutting base 52 is located at the end of the first base portion 11 close to the second base portion 12.

[0058] The first cutting base 51 is movably connected to the second cutting base 52. A vertically extending rack is arranged on the side of the first cutting base 51 close to the second cutting base 52, and the third servo drive unit is fixed to the side of the second cutting base 52 away from the first cutting base 51; the third servo drive unit includes a third servo motor, the output end of the third servo motor is connected to a speed reducer, and the output end of the speed reducer penetrates through the second cutting base 52 along the x-axis direction and is meshed with the rack arranged on the first cutting base 51 through a gear. Two sliders are symmetrically arranged on the side of the second cutting base 52 close to the first cutting base 51; the first cutting base 51 is respectively provided with two slide rails adapted to the two sliders, and the two slide rails extend vertically.

[0059] The fourth servo drive unit is fixed to the top surface of the first cutting base 51, and the output shaft of the fourth servo drive unit extends along the x-axis direction; the fourth servo drive unit includes a fourth motor, the output end of the fourth motor is connected to a speed reducer, and the output end of the speed reducer is key-connected to the rotating shaft of the circular cutter 53.

[0060] The tube body drawing die equipment of the non-negative pressure pipeline further includes a support and centering mechanism, which includes two support and centering members 54. The two support and centering members 54 are respectively located on both sides of the cutting mechanism. One of the support and centering members 54 is movably connected to the first base slide rail 111 of the first base part 11, and the other support and centering member 54 is fixed to the upper surface of the second base part 12.

[0061] A centering groove 541 is formed through the top end of the support and centering member 54 along the x-axis direction. The centering groove 541 is a symmetric structure along the y-axis direction, and the depth of the centering groove 541 gradually increases from its two ends to the middle; the centering grooves 541 of the two support and centering members correspond to each other along the x-axis direction.

[0062] The centering groove 541 includes two groove side walls symmetric about the y-axis. Both groove side walls are perpendicular to the x-axis direction; a ball seat 542 is perpendicularly fixed to the groove side wall. The ball seats 542 on the two groove side walls of the same centering groove 541 are symmetrically arranged; a seat head accommodating cavity is formed on the top surface of the ball seat 542, and a ball is clamped in the seat head accommodating cavity; the top end of the ball protrudes beyond the top surface of the ball seat 542; the ball abuts against and rolls to support the tube body, which can reduce the resistance when the tube body moves along the x-axis direction.

[0063] The tube body drawing die equipment of the non-negative pressure pipeline further includes a PLC control system; the punching cylinder 23, the flanging cylinder 264, the tube-passing cylinder 274, the outer die cylinder 25, the tube-clamping cylinder 33, the first servo drive unit, the second servo drive unit 36, the third servo drive unit, the fourth servo drive unit, the chuck drive unit, the processing drive unit, and the polishing drive unit are all connected to the PLC control system.

[0064] The implementation principle of this embodiment is as follows:

[0065] Referring to Figures 2-3 , the inner tube pressing component is turned on to the working state. The first storage base 271 is driven by the first servo drive unit to rise and leave the base accommodating cavity 122, and the pressing main body 26 of the inner tube pressing component is coaxial with the tube body die cavity 241; subsequently, the output end of the tube-passing cylinder extends, and the inner tube pressing component extends into the tube cavity of the tube body.

[0066] Referring to Figure 5, the body of the non-negative pressure pipeline is clamped by a three-jaw self-centering chuck. The length direction of the pipeline body is parallel to the x-axis direction, and the pipeline body is coaxial with the pipeline body cavity 241 and the pipe clamping cavity 321. Under the control of the chuck driving unit, the pipeline body passes through the centering groove 541 of the two support centering members 54 along the x-axis direction and penetrates between the two housing units 24; the pipeline body is coaxially movably sleeved on the pressing main body 26 and the series connecting rod 273 and can move along the x-axis direction.

[0067] The position of the pipeline body to be punched is aligned with the punching cutter post 22, the output ends of the two outer die cylinders 25 extend, and the two housing units 24 clamp the outer side surface of the pipeline body.

[0068] Refer to Figures 6-7 , the punching cylinder 23 pushes the punching cutter post 22 downward, and the punching cutter post 22 passes through the first die opening 242 to impact the arc surface of the pipeline body and cut a pipe hole 61 on the arc surface of the pipeline body.

[0069] Refer to Figure 8 , after punching is completed, the output ends of the outer die cylinders 25 contract, and the two housing units 24 release the pipeline body; the pipeline body is driven by the chuck mechanism 4 to move along the x-axis until the pipe hole 61 corresponds to the flanging top post 263, and the pipeline body is re-fastened by the two housing units 24.

[0070] Refer to Figure 9 , the output shaft of the flanging cylinder 264 pushes the flanging top post 263 upward, and the flanging cylinder 264 pushes a part of the periphery of the edge of the pipe hole 61 into the third die opening and extrudes this part of the pipeline body into a vertically upward transfer platform 62, and the top surface of the transfer platform 62 is a circular flat mouth structure.

[0071] After the punching and flanging of the first pipe hole 61 are completed, the two housing units 24 release the pipeline body, and the pipeline body is clamped by the chuck mechanism 4 and moves along the x-axis to punch and flange the next position of the pipeline body to form another transfer platform 62.

[0072] Perform the above operations in sequence. After all the pipe holes 61 on the side of the pipeline body have been punched and flanged, the chuck mechanism 4 clamps the pipeline body and moves it above the cutting mechanism. The third servo drive unit lifts the first cutting base 51 until the circular cutter 53 contacts the pipeline body, and the fourth servo drive unit drives the circular cutter 53 to rotate to cut the pipeline body to obtain the required length.

[0073] The output end of the pipe-passing cylinder contracts, and the inner pipe pressing assembly leaves the pipe cavity of the pipeline body; the first storage base 271 is driven by the first servo drive unit to descend, and the inner pipe pressing assembly and the storage assembly enter the base accommodation cavity 122. The top height of the inner pipe pressing assembly and the top height of the storage assembly are both less than the bottom height of the second fuselage 31. At this time, the inner pipe pressing assembly is in a non-working state.

[0074] The cut pipe body is clamped by two housing units 24 and sent to the pipe hole polishing mechanism along the x-axis direction.

[0075] The two pipe clamping units 32 of the pipe clamping assembly clamp and fix the pipe body. The polishing console 35 moves down along the polishing slide rail, and the second servo drive unit 36 rotates the grinding stone 34 to polish the adapter table 62, and finally a smooth circular connecting surface is formed on the top surface of the adapter table 62.

[0076] The pipe body of the finished non-negative pressure pipeline refers to Figure 11 . The adapter table 62 is adapted to the bottom of the flange pipe fitting. Through this adapter table 62, the pipe body and the flange pipe fitting are butt-welded.

[0077] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A tube body drawing die equipment for a non-negative pressure pipeline, characterized in that: It includes a pipe hole processing mechanism; the pipe hole processing mechanism includes a first fuselage (21), and the first fuselage (21) includes a punching component, an external pipe mold component and an internal pipe pressing component arranged inside it; the external pipe mold component includes an outer mold shell and a pipe body mold cavity (241) surrounded by the outer mold shell; the pipe body mold cavity (241) runs through the middle of the outer mold shell along the x-axis direction, and the pipe body mold cavity (241) is adapted to the outer side surface of the pipe body; the internal pipe pressing component coaxially penetrates the pipe body mold cavity (241), and the internal pipe pressing component is adapted to the inner side surface of the pipe body; the punching component is located above the external pipe mold component; The punching component includes a punching cutter post (22); the punching cutter post (22) extends vertically, and its top is connected to a punching cylinder (23); the punching cylinder (23) is fixed to the first fuselage (21), and its output shaft is parallel to the vertical direction; a first mold opening (242) is vertically opened at the top of the outer mold shell; the internal pipe pressing component includes a pressing main body (26), and a second mold opening (261) is vertically opened at the top of the pressing main body (26); the first mold opening (242) communicates with the second mold opening (261), both are corresponding to the punching cutter post (22), and the inner diameters of both are equal to the cross-sectional diameter of the punching cutter post (22); The internal pipe pressing component further includes a hole flanging top post (263) vertically arranged inside the pressing main body (26), and the bottom of the hole flanging top post (263) is connected to a hole flanging cylinder (264); the hole flanging cylinder (264) is fixed to the pressing main body (26), and its output shaft extends vertically; a third mold opening (243) corresponding to the hole flanging top post (263) is vertically opened at the top of the outer mold shell; the radius of the third mold opening (243) is larger than the radius of the first mold opening (242), and the radius of the third mold opening (243) is equal to the sum of the radius of the hole flanging top post (263) and the wall thickness of the pipe body; the axis of the hole flanging top post (263) coincides with the axis of the punching cutter post (22) in the y-axis direction; One side end of the pressing main body (26) is connected to the first fuselage (21) through a storage component; It further includes a pipe hole polishing mechanism, and the pipe hole polishing mechanism includes a second fuselage (31); the second fuselage (31) includes a pipe clamping component, a grinding stone component and a vertically extending polishing slide rail arranged inside it; the pipe clamping component and the external pipe mold component are distributed along the x-axis direction, and the pipe clamping component is used to fix the pipe body; the grinding stone component includes a polishing control console (35) and a grinding stone (34); the polishing control console (35) is movably connected to the polishing slide rail, and the grinding stone (34) is arranged below the polishing control console (35); a second servo drive unit (36) is fixed to the polishing control console (35); the output shaft of the second servo drive unit (36) extends vertically, and its output end is key-connected to the top end of the grinding stone (34).

2. The tube body drawing equipment for a non-negative pressure pipeline according to claim 1, characterized in that: The storage component includes a pipe-piercing cylinder (274), a first storage base (271), a second storage base (272), and a first servo drive unit; the pipe-piercing cylinder is fixed to the top of the first storage base (271), its output shaft is parallel to the x-axis direction, and its output end is connected to the pressing body (26) through a string connecting rod (273) extending along the x-axis direction; a vertically extending rack is provided on the side surface of the first storage base (271) close to the second storage base (272); the first servo drive unit is fixed to the side surface of the second storage base (272) away from the first storage base (271), the output end of the first servo drive unit penetrates through the second storage base (272) and is meshed and connected to the rack through a gear; the second storage base (272) is fixedly connected to the first fuselage (21).

3. The tube body drawing die equipment for a non-negative pressure pipeline according to claim 1, characterized in that: The outer mold housing is formed by splicing two housing units (24), and the two housing units (24) are symmetrically arranged along the y-axis direction; the outer side surfaces of the housing units (24) away from each other are respectively connected to the output ends of two outer mold cylinders; the outer mold cylinders (25) are fixedly connected to the first fuselage (21), their output shafts are parallel to the y-axis direction, and the output ends of the two outer mold cylinders are arranged oppositely.

4. The tube body drawing equipment for a non-negative pressure pipeline according to claim 1, characterized in that: It further includes a base and a chuck mechanism (4); a base slide rail is arranged on the upper surface of the base along the x-axis direction; the chuck mechanism (4), the pipe hole processing mechanism, and the pipe hole polishing mechanism are sequentially movably connected to the base slide rail along the x-axis direction.

5. The tube body drawing equipment for a non-negative pressure pipeline according to claim 4, characterized in that: It further includes a cutting mechanism; the cutting mechanism includes a first cutting base (51), a second cutting base (52), and a circular cutting tool (53); the second cutting base (52) is fixed to the upper surface of the base, and it is located between the chuck mechanism (4) and the pipe hole processing mechanism; the first cutting base (51) is movably connected to the second cutting base (52) in the vertical direction; a fourth servo drive unit is fixedly arranged on the top surface of the first cutting base (51), the output shaft of the fourth servo drive unit extends along the x-axis direction, and the output end of the fourth servo drive unit is key-connected to the rotating shaft of the circular cutting tool (53).

6. The tube body drawing die equipment for a non-negative pressure pipeline according to claim 5, characterized in that: It further includes a support and centering mechanism; the support and centering mechanism includes two support and centering members (54), and the two support and centering members (54) are respectively arranged on both sides of the cutting mechanism; the bottom surface of the support and centering member (54) is connected to the upper surface of the base; a centering groove (541) is formed through the top end of the support and centering member (54) along the x-axis direction, the centering groove (541) is a symmetric structure along the y-axis direction, and the depth of the centering groove (541) gradually increases from its two ends to the middle; along the x-axis direction, the centering grooves (541) of the two support and centering members correspond to each other.

7. The tube body drawing die equipment for a non-negative pressure pipeline according to claim 6, characterized in that: The centering groove (541) includes two groove side walls that are symmetric along the y-axis direction, and both of the two groove side walls are perpendicular to the x-axis direction; the groove side walls are perpendicularly and fixedly provided with ball seats (542), and the ball seats (542) on the two groove side walls of the same centering groove (541) are symmetrically arranged; a socket head accommodation cavity is formed on the top surface of the ball seat (542), and a ball is clamped in the socket head accommodation cavity; the top end of the ball protrudes beyond the top surface of the ball seat (542).

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