CN112337975A - Seamless steel pipe piercing plug - Google Patents
Seamless steel pipe piercing plug Download PDFInfo
- Publication number
- CN112337975A CN112337975A CN202011179507.XA CN202011179507A CN112337975A CN 112337975 A CN112337975 A CN 112337975A CN 202011179507 A CN202011179507 A CN 202011179507A CN 112337975 A CN112337975 A CN 112337975A
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- Prior art keywords
- rod
- groove
- sliding
- wedge
- shaped
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 36
- 239000010959 steel Substances 0.000 title claims abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 26
- 238000001704 evaporation Methods 0.000 claims description 19
- 230000008020 evaporation Effects 0.000 claims description 19
- 238000002347 injection Methods 0.000 claims description 9
- 239000007924 injection Substances 0.000 claims description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000000498 cooling water Substances 0.000 description 10
- 238000001125 extrusion Methods 0.000 description 6
- 238000005299 abrasion Methods 0.000 description 4
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 3
- 235000011613 Pinus brutia Nutrition 0.000 description 3
- 241000018646 Pinus brutia Species 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000033116 oxidation-reduction process Effects 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B25/00—Mandrels for metal tube rolling mills, e.g. mandrels of the types used in the methods covered by group B21B17/00; Accessories or auxiliary means therefor ; Construction of, or alloys for, mandrels or plugs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B19/00—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
- B21B19/02—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work the axes of the rollers being arranged essentially diagonally to the axis of the work, e.g. "cross" tube-rolling ; Diescher mills, Stiefel disc piercers or Stiefel rotary piercers
- B21B19/04—Rolling basic material of solid, i.e. non-hollow, structure; Piercing, e.g. rotary piercing mills
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jet Pumps And Other Pumps (AREA)
Abstract
The invention belongs to the technical field of perforating machines, and particularly relates to a seamless steel tube perforating plug which comprises a top rod and a plug; the top head is arranged at one end of the top rod; one end of the top head close to the top rod is fixedly connected with a fixing column; a groove is formed in the position, corresponding to the fixed column, of the ejector rod, and a clamping unit is arranged in the groove; the clamping unit comprises an arc-shaped block, a sliding block, a wedge-shaped rod and a driving assembly; a group of first sliding grooves are uniformly distributed on the circumference of the inner wall of the groove, and the sliding block is embedded into the first sliding grooves and is in sliding connection with the first sliding grooves; the arc-shaped block is fixedly connected with the sliding block; the wedge-shaped rod is connected with the second sliding groove in a sliding manner; a driving groove is formed in the position, corresponding to the wedge-shaped rod, of the sliding block; one end of the wedge-shaped rod, which is far away from the sliding block, is provided with a driving component; according to the invention, the driving assembly pushes the wedge-shaped rod to slide and then insert into the driving groove, so that the two arc-shaped blocks are close to each other and then clamp the fixing column, and further the dismounting efficiency of the ejector is increased.
Description
Technical Field
The invention belongs to the technical field of perforating machines, and particularly relates to a seamless steel tube perforating plug.
Background
The top is a key tool in seamless steel pipe production, quality and service life of the top directly affect the yield and quality of steel pipe production and economic benefits of enterprises. The working condition of the piercing plug is quite severe, and the piercing plug not only needs to bear strong axial pressure, but also needs to overcome strong deformation friction force generated between the piercing plug and the inner wall. Generally, seamless steel pipe usually is perforated rolling by the seamless steel pipe perforation top to the round steel that heats to the uniform temperature and forms, the seamless steel pipe perforation top is at the fenestrate in-process, the seamless steel pipe perforation top need bear the great pressure from the pipe blank, this causes seamless steel pipe perforation top and middle part fracture very easily, and the top and the outer wall direct contact high temperature round steel of top have accelerated the wearing and tearing of top under high temperature, life is all shorter usually, and is with high costs.
Some technical solutions related to piercing plug also appear in the prior art, for example, a chinese patent with application number 2017100103891 discloses a seamless steel tube piercing plug, which comprises a plug body, wherein the upper half part of the plug body is a truncated cone, and the lower half part of the plug body is a cylinder; the cone frustum and the cylinder are integrally formed, cavities are reserved in the cone frustum and the cylinder, and the sizes and the shapes of the cavities are the same or different; the upper end of the plug body is provided with a high-temperature resistant head, the upper end of the truncated cone of the plug body is movably connected with the high-temperature resistant head, and the upper end of the truncated cone of the plug body and the movable part of the high-temperature resistant head are provided with heat dissipation fillers. However, in the prior art, the ejector head bears high temperature and high pressure and is worn quickly, so that the replaceable ejector head is adopted, the existing ejector head is fixedly connected with the ejector rod through threads, and the ejector head is difficult to disassemble due to high-temperature deformation and the piercing efficiency of the ejector head is influenced.
Therefore, the invention provides a seamless steel pipe piercing plug.
Disclosure of Invention
In order to make up for the defects of the prior art and solve the problems that the ejector in the prior art is fast in abrasion due to the fact that the ejector bears high temperature and high pressure, the ejector is replaceable, but the existing ejector is fixedly connected with the ejector rod through threads, the ejector is difficult to disassemble due to high-temperature deformation, and the piercing efficiency of the ejector is affected, the seamless steel pipe piercing ejector provided by the invention is simple in structure, convenient to use and high in cost.
The technical scheme adopted by the invention for solving the technical problems is as follows: the seamless steel tube piercing plug comprises a push rod and a plug body; the ejector head is arranged at one end of the ejector rod; one end of the top head close to the top rod is fixedly connected with a fixing column; a groove is formed in the position, corresponding to the fixing column, of the ejector rod, and a clamping unit is arranged in the groove;
the clamping unit comprises an arc-shaped block, a sliding block, a wedge-shaped rod and a driving assembly; a group of first sliding grooves are uniformly distributed on the circumference of the inner wall of the groove, and the sliding block is embedded into the first sliding grooves and is in sliding connection with the first sliding grooves; the arc blocks are symmetrically arranged on the periphery of the fixed column and fixedly connected with the sliding block; a second sliding groove is formed in the middle of the first sliding groove, and the wedge-shaped rod is connected with the second sliding groove in a sliding mode; a driving groove is formed in the sliding block at a position corresponding to the wedge-shaped rod, and the wedge-shaped rod is inserted into the driving groove to drive the two arc-shaped blocks to approach each other; one end of the wedge-shaped rod, which is far away from the sliding block, is provided with a driving assembly; when the tool is in work, the ejector head in the prior art is fast worn due to the fact that the ejector head bears high temperature and high pressure, the ejector head can be replaced, the existing ejector head is fixedly connected with the ejector rod through threads, the ejector head is difficult to disassemble due to high-temperature deformation, and the piercing efficiency of the ejector head is affected; insert between two arc pieces through the fixed column this moment, later insert the drive groove through drive assembly promotion wedge pole slip back, and then make two arc pieces press from both sides tight fixed column after being close to each other, and then increase the dismouting efficiency of top, further increase seamless steel pipe's perforation shaping efficiency.
Preferably, the driving assembly comprises a slip ring, a lead screw and a first gear; the sliding ring is connected with the wedge-shaped rod, and the lead screw penetrates through the sliding ring and is connected with the sliding ring through a ball screw nut pair; the screw rod is rotationally connected with a first hole formed in the ejector rod, a cavity is formed in the ejector rod on the side, away from the ejector head, of the screw rod, a motor is fixedly connected in the air bag, and an output shaft of the motor is fixedly connected with a first gear; a second gear is fixedly connected to the position, corresponding to the first gear, of the screw rod, and the first gear is meshed with the second gear; drive a gear rotation through the motor, later drive No. two gears and lead screw and rotate, during the drive sliding ring removed and drives the sliding back of wedge-shaped rod and insert the drive groove, after the wedge-shaped rod inserted the drive groove completely, the wedge-shaped rod locked the slider, increased the tight fastness of clamp of arc piece to the fixed column.
Preferably, a threaded hole is formed in one side, adjacent to the two arc-shaped blocks, of each arc-shaped block, and the arc-shaped blocks are in threaded connection with the fixed columns; a group of annular grooves are formed in the inner periphery of the threaded hole, expansion blocks are embedded in the annular grooves, and the thermal expansion coefficients of the expansion blocks are larger than those of the arc blocks; the threaded connection of the threaded hole and the fixed column further reduces loosening and falling of the ejector, and meanwhile, when the ejector is disassembled, the driving assembly drives the wedge-shaped rod to be drawn out of the driving groove, so that the fixed column is quickly pulled out after the two arc-shaped blocks are separated, and the disassembly efficiency of the ejector is improved; after the wedge-shaped rod is completely inserted into the driving groove, when the top head performs perforation operation, the temperature of the top head rises, so that the expansion block expands after warming up, and because the thermal expansion coefficient of the expansion block is greater than that of the arc-shaped block, the extrusion force of the expansion block on the fixing column is further increased, the reliable connection between the top head and the ejector rod is increased, and the perforation efficiency of the seamless steel pipe is further increased.
Preferably, a water inlet hole is formed in the screw rod, and the water inlet hole penetrates through the screw rod and extends into the top; a group of evaporation holes communicated with the water inlet holes are uniformly distributed on the inner circumference of the top head, and the evaporation holes are close to the outer circumference of the top head; a water return hole is formed in the position, corresponding to the evaporation hole, of the ejector rod; a group of gas injection holes are communicated with the evaporation holes, and one ends of the gas injection holes, which are positioned on the periphery of the ejector head, are inclined towards the direction close to the ejector rod; cooling water flows through the evaporation holes and then flows back through the backflow holes by cooling water flowing into the water inlet holes, so that the temperature of the plug is reduced, the abrasion of the plug is reduced, the service life of the plug is prolonged, excessive expansion of the plug after temperature rise is reduced, the size precision of the plug is ensured, and the perforation quality of the seamless steel pipe is improved; when the cooling water in the water inlet hole flows to the evaporation hole, part of the cooling water is gasified after being heated to form vapor, and the vapor is sprayed out from the gas jet hole to further clean the residual oxide skin on the peripheries of the top head and the ejector rod, so that the taking-out efficiency of the top head is further increased.
Preferably, a high-temperature-resistant air bag is sleeved on the lead screw between the slip ring and the bottom of the groove, and alcohol is filled in the air bag; the inner periphery of the air bag close to the screw rod is provided with a group of micropores; when the lead screw is rotatory and drive the sliding ring when removing to the direction of keeping away from the top, the sliding ring extrusion gasbag for spout compressed air behind the gasbag extrusion, and then clear up the gap between arc-shaped piece and top and the ejector pin, the influence of oxidation reduction skin impurity to top dismantlement efficiency, the inside alcohol gasification of back inside is heated at the gasbag simultaneously, further increases the jet-propelled speed of gasbag, increases the dismantlement efficiency of top.
Preferably, one side of the sliding block is provided with a clamping groove, a clamping rod is arranged in the clamping groove, one end of the clamping rod is hinged with the side wall of the clamping groove, and a spring is fixedly connected between the other end of the clamping rod and the bottom of the clamping groove; a cylinder is fixedly connected with the position, corresponding to the clamping rod, in the groove, and a push plate is fixedly connected with one end, close to the clamping rod, of a piston rod of the cylinder; after the slider drives the arc piece and slides and the chucking fixed column, the kelly pops out to the draw-in groove outside under the drive of spring, and then cooperates the draw-in groove card to go out inner wall of groove, further reduces the arc piece pine and takes off, increases the firm in connection nature between top and the ejector pin, when needs dismantle the top, promotes the piston rod through the cylinder and stretches out, and then drives the kelly through the push pedal and reset, and then makes things convenient for the slider to slide to a spout and reset, increases the dismantlement efficiency of top.
The invention has the following beneficial effects:
1. according to the seamless steel pipe piercing plug, the fixing column is inserted between the two arc-shaped blocks, the wedge-shaped rod is pushed by the driving assembly to slide and then is inserted into the driving groove, so that the two arc-shaped blocks are close to each other and then clamp the fixing column, the assembly and disassembly efficiency of the plug is improved, and the piercing forming efficiency of a seamless steel pipe is further improved.
2. According to the seamless steel tube perforating ejection head, after the arc-shaped block is driven to slide by the sliding block and the fixed column is clamped, the clamping rod is driven by the spring to pop out of the clamping groove, and then the clamping groove is clamped out of the inner wall of the groove, so that the loosening of the arc-shaped block is further reduced, the connection firmness between the ejection head and the ejection rod is increased, when the ejection head needs to be disassembled, the piston rod is pushed by the air cylinder to extend out, the clamping rod is driven to reset by the push plate, the sliding block can conveniently slide and reset in the first sliding groove, and the disassembly efficiency of the ejection head is increased.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
FIG. 4 is an enlarged view of a portion of FIG. 3 at B;
in the figure: the device comprises a top rod 1, a top head 11, a fixed column 12, a groove 13, a clamping unit 2, an arc-shaped block 21, a sliding block 22, a wedge-shaped rod 23, a driving component 3, a first sliding groove 24, a second sliding groove 25, a driving groove 26, a sliding ring 31, a lead screw 32, a first gear 33, a first hole 34, a cavity 35, a motor 36, a second gear 37, a threaded hole 27, an annular groove 28, an expansion block 29, a water inlet hole 4, an evaporation hole 41, a water return hole 42, a gas injection hole 43, an air bag 44, a clamping groove 45, a clamping rod 46, an air cylinder 47 and a push plate 48.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 4, the piercing plug for seamless steel pipes according to the present invention comprises a mandrel 1 and a plug 11; the top 11 is arranged at one end of the top rod 1; one end of the top head 11 close to the top rod 1 is fixedly connected with a fixed column 12; a groove 13 is formed in the position, corresponding to the fixed column 12, of the ejector rod 1, and a clamping unit 2 is arranged in the groove 13;
the clamping unit 2 comprises an arc-shaped block 21, a sliding block 22, a wedge rod 23 and a driving assembly 3; a group of first sliding grooves 24 are uniformly distributed on the circumference of the inner wall of the groove 13, and the sliding block 22 is embedded into the first sliding grooves 24 and is in sliding connection with the first sliding grooves 24; the arc blocks 21 are symmetrically arranged on the periphery of the fixed column 12, and the arc blocks 21 are fixedly connected with the sliding block 22; a second sliding groove 25 is formed in the middle of the first sliding groove 24, and the wedge-shaped rod 23 is connected with the second sliding groove 25 in a sliding mode; a driving groove 26 is formed in the slide block 22 at a position corresponding to the wedge-shaped rod 23, and the wedge-shaped rod 23 is inserted into the driving groove 26 to drive the two arc-shaped blocks 21 to approach each other; one end of the wedge-shaped rod 23, which is far away from the sliding block 22, is provided with a driving assembly 3; when the device works, in the prior art, the ejector 11 bears high temperature and high pressure and is worn quickly, so the replaceable ejector 11 is adopted, but the existing ejector 11 is fixedly connected with the ejector rod 1 through threads, and the ejector 11 is difficult to disassemble due to high-temperature deformation of the ejector 11, so that the perforating efficiency of the ejector 11 is influenced; insert between two arc pieces 21 through fixed column 12 this moment, later insert drive groove 26 after promoting wedge rod 23 through drive assembly 3 and slide in, and then make two arc pieces 21 press from both sides tight fixed column 12 after being close to each other, and then increase top 11's dismouting efficiency, further increase seamless steel pipe's perforation shaping efficiency.
As an embodiment of the present invention, the driving assembly 3 includes a slip ring 31, a lead screw 32 and a first gear 33; the sliding ring 31 is connected with the wedge rod 23, and the lead screw 32 penetrates through the sliding ring 31 and is connected with the sliding ring 31 through a ball screw nut pair; the screw rod 32 is rotatably connected with a first hole 34 formed in the ejector rod 1, a cavity 35 is formed in the ejector rod 1 at one side, away from the ejector head 11, of the screw rod 32, a motor 36 is fixedly connected in the cavity 35, and an output shaft of the motor 36 is fixedly connected with a first gear 33; a second gear 37 is fixedly connected to the position, corresponding to the first gear 33, of the screw rod 32, and the first gear 33 is meshed with the second gear 37; drive a gear 33 through motor 36 and rotate, later drive No. two gears 37 and lead screw 32 and rotate, during drive sliding ring 31 removed and driven wedge rod 23 slip back and insert driving groove 26, after wedge rod 23 inserted driving groove 26 completely, wedge rod 23 locked slider 22, increased the tight fastness of clamp of arc piece 21 to fixed column 12.
As an embodiment of the invention, a threaded hole 27 is formed in one side of each of the two arc-shaped blocks 21 adjacent to each other, and the arc-shaped blocks 21 are in threaded connection with the fixed column 12; a group of annular grooves 28 are formed in the inner periphery of the threaded hole 27, expansion blocks 29 are embedded in the annular grooves 28, and the thermal expansion coefficient of the expansion blocks 29 is larger than that of the arc-shaped blocks 21; the threaded connection of the threaded hole 27 and the fixed column 12 further reduces the looseness and the falling of the top 11, and meanwhile, when the top 11 is disassembled, the driving assembly 3 drives the wedge-shaped rod 23 to be drawn out of the driving groove 26, so that the fixed column 12 is quickly pulled out after the two arc-shaped blocks 21 are separated, and the disassembling efficiency of the top 11 is improved; after the wedge-shaped rod 23 is completely inserted into the driving groove 26, when the plug 11 performs perforation operation, the temperature of the plug 11 rises, and then the expansion block 29 is heated and then expands, because the thermal expansion coefficient of the expansion block 29 is greater than that of the arc-shaped block 21, the extrusion force of the expansion block 29 on the fixing column 12 is further increased, the reliable connection between the plug 11 and the ejector rod 1 is increased, and the perforation efficiency of the seamless steel tube is further increased.
As an embodiment of the present invention, a water inlet 4 is formed in the screw rod 32, and a water hole of the water inlet 4 penetrates through the screw rod 32 and extends into the plug 11; a group of evaporation holes 41 communicated with the water inlet hole 4 are uniformly distributed on the inner circumference of the top head 11, and the evaporation holes 41 are close to the outer circumference of the top head 11; a water return hole 42 is formed in the position, corresponding to the evaporation hole 41, of the ejector rod 1; a group of air injection holes 43 are communicated with the evaporation holes 41, and one ends of the air injection holes 43, which are positioned on the periphery of the top head 11, are inclined towards the direction close to the ejector rod 1; cooling water flows through the evaporation holes 41 and then flows back through the backflow holes by frequently cooling the water in the water inlet holes 4, so that the temperature of the plug 11 is reduced, the abrasion of the plug 11 is reduced, the service life of the plug 11 is prolonged, excessive expansion of the plug 11 after temperature rise is reduced, the size precision of the plug 11 is ensured, and the perforation quality of the seamless steel pipe is improved; when the cooling water in the water inlet hole 4 flows through the evaporation hole 41, part of the cooling water is heated and then gasified to form steam, and the steam is sprayed out from the gas injection hole 43, so that the residual oxide skin on the peripheries of the plug 11 and the ejector rod 1 is cleaned, and the taking-out efficiency of the plug 11 is further improved.
As an embodiment of the invention, a high temperature resistant air bag 44 is sleeved on the lead screw 32 between the slip ring 31 and the bottom of the groove 13, and alcohol is filled in the air bag 44; the inner periphery of the air bag 44 close to the screw 32 is provided with a group of micropores; when lead screw 32 rotates and drives sliding ring 31 and remove to the direction of keeping away from top 11, sliding ring 31 extrudees gasbag 44 for spout compressed air behind the gasbag 44 extrusion, and then clear up the gap between arc-shaped piece 21 and top 11 and the ejector pin 1, the influence of oxidation reduction skin impurity to top 11 dismantlement efficiency, inside alcohol gasification after gasbag 44 is heated simultaneously, further increase gasbag 44's jet-propelled speed, increase top 11's dismantlement efficiency.
As an embodiment of the present invention, a clamping groove 45 is formed on one side of the slider 22, a clamping rod 46 is disposed in the clamping groove 45, one end of the clamping rod 46 is hinged to a side wall of the clamping groove 45, and a spring is fixedly connected between the other end of the clamping rod 46 and the bottom of the clamping groove 45; an air cylinder 47 is fixedly connected with the position, corresponding to the clamping rod 46, in the groove 13, and a push plate 48 is fixedly connected with one end, close to the clamping rod 46, of a piston rod of the air cylinder 47; after slider 22 drives arc piece 21 and slides and chucking fixed column 12, kelly 46 pops out to draw-in groove 45 outside under the drive of spring, and then cooperation draw-in groove 45 blocks out recess 13 inner wall, further reduce the pine of arc piece 21 and take off, increase the fastness of being connected between top 11 and the ejector pin 1, when top 11 is dismantled to needs, promote the piston rod through cylinder 47 and stretch out, and then drive kelly 46 through push pedal 48 and reset, and then make things convenient for slider 22 to slide in the spout 24 and reset, increase top 11's dismantlement efficiency.
During work, the fixing column 12 is inserted between the two arc-shaped blocks 21, the driving assembly 3 pushes the wedge-shaped rod 23 to slide and then is inserted into the driving groove 26, so that the two arc-shaped blocks 21 are close to each other and then clamp the fixing column 12, the dismounting efficiency of the top 11 is increased, and the perforating and forming efficiency of the seamless steel pipe is further increased; the first gear 33 is driven to rotate by the motor 36, then the second gear 37 and the lead screw 32 are driven to rotate, the driving slip ring 31 is driven to move, the wedge rod 23 is driven to slide and then is inserted into the driving groove 26, when the wedge rod 23 is completely inserted into the driving groove 26, the wedge rod 23 locks the sliding block 22, and the clamping firmness of the arc-shaped block 21 on the fixed column 12 is improved; the threaded hole 27 is in threaded connection with the fixed column 12, so that loosening and falling of the top 11 are further reduced, and meanwhile, when the top 11 is disassembled, the driving assembly 3 drives the wedge-shaped rod 23 to be drawn out of the driving groove 26, so that the fixed column 12 is quickly pulled out after the two arc-shaped blocks 21 are separated, and the disassembling efficiency of the top 11 is improved; after the wedge-shaped rod 23 is completely inserted into the driving groove 26, when the top 11 is subjected to punching operation, the temperature of the top 11 rises, so that the expansion block 29 is heated and then expands, because the thermal expansion coefficient of the expansion block 29 is greater than that of the arc-shaped block 21, the extrusion force of the expansion block 29 on the fixed column 12 is further increased, the reliable connection between the top 11 and the ejector rod 1 is increased, and the punching efficiency of the seamless steel tube is further increased; cooling water flows through the evaporation holes 41 and then flows back through the backflow holes by frequently cooling the water in the water inlet holes 4, so that the temperature of the plug 11 is reduced, the abrasion of the plug 11 is reduced, the service life of the plug 11 is prolonged, excessive expansion of the plug 11 after temperature rise is reduced, the size precision of the plug 11 is ensured, and the perforation quality of the seamless steel pipe is improved; when the cooling water in the water inlet hole 4 flows through the evaporation hole 41, part of the cooling water is heated and then gasified to form water vapor, and the water vapor is sprayed out from the gas injection hole 43, so that residual oxide skin on the peripheries of the plug 11 and the ejector rod 1 is cleaned, and the taking-out efficiency of the plug 11 is further improved; when the screw rod 32 rotates and drives the sliding ring 31 to move in the direction far away from the top head 11, the sliding ring 31 extrudes the air bag 44, compressed air is sprayed out after the air bag 44 is extruded, gaps among the arc-shaped block 21, the top head 11 and the ejector rod 1 are cleaned, the influence of oxidized skin impurities on the disassembly efficiency of the top head 11 is reduced, and meanwhile, after the air bag 44 is heated, the internal alcohol is gasified, the air spraying speed of the air bag 44 is further increased, and the disassembly efficiency of the top head 11 is increased; after slider 22 drives arc piece 21 and slides and chucking fixed column 12, kelly 46 pops out to draw-in groove 45 outside under the drive of spring, and then cooperation draw-in groove 45 blocks out recess 13 inner wall, further reduce the pine of arc piece 21 and take off, increase the fastness of being connected between top 11 and the ejector pin 1, when top 11 is dismantled to needs, promote the piston rod through cylinder 47 and stretch out, and then drive kelly 46 through push pedal 48 and reset, and then make things convenient for slider 22 to slide in the spout 24 and reset, increase top 11's dismantlement efficiency.
The front, the back, the left, the right, the upper and the lower are all based on figure 1 in the attached drawings of the specification, according to the standard of the observation angle of a person, the side of the device facing an observer is defined as the front, the left side of the observer is defined as the left, and the like.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the scope of the present invention.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides a seamless steel pipe piercing plug which characterized in that: comprises a mandril (1) and a mandril (11); the ejector head (11) is arranged at one end of the ejector rod (1); one end of the top head (11) close to the top rod (1) is fixedly connected with a fixed column (12); a groove (13) is formed in the position, corresponding to the fixed column (12), of the ejector rod (1), and a clamping unit (2) is arranged in the groove (13);
the clamping unit (2) comprises an arc-shaped block (21), a sliding block (22), a wedge-shaped rod (23) and a driving assembly (3); a group of first sliding grooves (24) are uniformly distributed on the circumference of the inner wall of the groove (13), and the sliding block (22) is embedded into the first sliding grooves (24) and is in sliding connection with the first sliding grooves (24); the arc blocks (21) are symmetrically arranged on the periphery of the fixed column (12), and the arc blocks (21) are fixedly connected with the sliding block (22); a second sliding groove (25) is formed in the middle of the first sliding groove (24), and the wedge-shaped rod (23) is connected with the second sliding groove (25) in a sliding mode; a driving groove (26) is formed in the position, corresponding to the wedge-shaped rod (23), of the sliding block (22), and the wedge-shaped rod (23) is inserted into the driving groove (28) to drive the two arc-shaped blocks (21) to approach each other; and a driving component (3) is arranged at one end of the wedge-shaped rod (23) far away from the sliding block (22).
2. The seamless steel pipe piercing plug according to claim 1, characterized in that: the driving assembly (3) comprises a slip ring (31), a lead screw (32) and a first gear (33); the sliding ring (31) is connected with the wedge rod (23), and the lead screw (32) penetrates through the sliding ring (31) and is connected with the sliding ring (31) through a ball screw nut pair; the screw rod (32) is rotatably connected with a first hole (34) formed in the ejector rod (1), a cavity (35) is formed in the ejector rod (1) on one side, away from the ejector head (11), of the screw rod (32), a motor (36) is fixedly connected in the cavity (35), and an output shaft of the motor (36) is fixedly connected with a first gear (33); a second gear (37) is fixedly connected to the position, corresponding to the first gear (33), of the screw rod (32), and the first gear (33) is meshed with the second gear (37).
3. The seamless steel pipe piercing plug according to claim 2, characterized in that: threaded holes (27) are formed in one adjacent side of the two arc-shaped blocks (21), and the arc-shaped blocks (21) are in threaded connection with the fixed column (12); a group of annular grooves (28) are formed in the inner periphery of the threaded hole (27), expansion blocks (29) are embedded in the annular grooves (28), and the thermal expansion coefficient of the expansion blocks (29) is larger than that of the arc blocks (21).
4. The seamless steel pipe piercing plug according to claim 3, characterized in that: a water inlet hole (4) is formed in the screw rod (32), and a water hole of the water inlet hole (4) penetrates through the screw rod (32) and extends into the top head (11); a group of evaporation holes (41) communicated with the water inlet hole (4) are uniformly distributed on the inner circumference of the top head (11), and the evaporation holes (41) are close to the periphery of the top head (11); a water return hole (42) is formed in the position, corresponding to the evaporation hole (41), of the ejector rod (1); and the evaporation holes (41) are communicated with a group of air injection holes (43), and one ends of the air injection holes (43) positioned on the periphery of the ejector head (11) are inclined towards the direction close to the ejector rod (1).
5. The seamless steel pipe piercing plug according to claim 4, characterized in that: a high-temperature-resistant air bag (44) is sleeved on the lead screw (32) between the slip ring (31) and the bottom of the groove (13), and alcohol is filled in the air bag (44); the inner circumference of the air bag (44) close to the screw rod (32) is provided with a group of micropores.
6. The seamless steel pipe piercing plug according to claim 5, characterized in that: a clamping groove (45) is formed in one side of the sliding block (22), a clamping rod (46) is arranged in the clamping groove (45), one end of the clamping rod (46) is hinged with the side wall of the clamping groove (45), and a spring is fixedly connected between the other end of the clamping rod and the bottom of the clamping groove (45); the position corresponding to the clamping rod (46) in the groove (13) is fixedly connected with an air cylinder (47), and one end, close to the clamping rod (46), of a piston rod of the air cylinder (47) is fixedly connected with a push plate (48).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011179507.XA CN112337975A (en) | 2020-10-29 | 2020-10-29 | Seamless steel pipe piercing plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011179507.XA CN112337975A (en) | 2020-10-29 | 2020-10-29 | Seamless steel pipe piercing plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112337975A true CN112337975A (en) | 2021-02-09 |
Family
ID=74356447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011179507.XA Withdrawn CN112337975A (en) | 2020-10-29 | 2020-10-29 | Seamless steel pipe piercing plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112337975A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117000766A (en) * | 2023-10-07 | 2023-11-07 | 江苏三耐特种设备制造有限公司 | Fixed fixture of perforating machine |
-
2020
- 2020-10-29 CN CN202011179507.XA patent/CN112337975A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117000766A (en) * | 2023-10-07 | 2023-11-07 | 江苏三耐特种设备制造有限公司 | Fixed fixture of perforating machine |
| CN117000766B (en) * | 2023-10-07 | 2023-12-22 | 江苏三耐特种设备制造有限公司 | Fixed fixture of perforating machine |
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Application publication date: 20210209 |
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