CN110421774B - Online automatic concentricity poling plugging device and automatic foaming production line - Google Patents
Online automatic concentricity poling plugging device and automatic foaming production line Download PDFInfo
- Publication number
- CN110421774B CN110421774B CN201810423668.5A CN201810423668A CN110421774B CN 110421774 B CN110421774 B CN 110421774B CN 201810423668 A CN201810423668 A CN 201810423668A CN 110421774 B CN110421774 B CN 110421774B
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- Prior art keywords
- pipe
- plugging
- foaming
- steel pipe
- penetrating
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- 238000005187 foaming Methods 0.000 title claims abstract description 99
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 27
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 109
- 239000010959 steel Substances 0.000 claims abstract description 109
- 230000000149 penetrating effect Effects 0.000 claims abstract description 92
- 229920003023 plastic Polymers 0.000 claims description 66
- 239000004033 plastic Substances 0.000 claims description 66
- 229920001169 thermoplastic Polymers 0.000 claims description 24
- 239000004416 thermosoftening plastic Substances 0.000 claims description 24
- 239000007788 liquid Substances 0.000 claims description 23
- 238000007789 sealing Methods 0.000 claims description 23
- 239000002184 metal Substances 0.000 claims description 21
- 229920001971 elastomer Polymers 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 13
- 230000000903 blocking effect Effects 0.000 claims description 7
- 238000004321 preservation Methods 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 229920001903 high density polyethylene Polymers 0.000 description 10
- 239000004700 high-density polyethylene Substances 0.000 description 10
- 230000002787 reinforcement Effects 0.000 description 10
- 229920002635 polyurethane Polymers 0.000 description 7
- 239000004814 polyurethane Substances 0.000 description 7
- 230000002093 peripheral effect Effects 0.000 description 6
- 238000004891 communication Methods 0.000 description 5
- 230000003014 reinforcing effect Effects 0.000 description 4
- 230000002195 synergetic effect Effects 0.000 description 4
- 239000010410 layer Substances 0.000 description 3
- 229920005992 thermoplastic resin Polymers 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 238000013022 venting Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
- B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
- B29C44/18—Filling preformed cavities
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/35—Component parts; Details or accessories
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/22—Tubes or pipes, i.e. rigid
Landscapes
- Pipe Accessories (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
An on-line automatic concentricity pipe penetrating plugging device comprises an inner chuck mechanism (100), a plugging mechanism (200), a plugging driving mechanism (300) and a telescopic arm mechanism (400), wherein the plugging mechanism (200) is coaxially arranged outside the inner chuck mechanism (100); the plugging driving mechanism (300) comprises a pipe penetrating plugging driving mechanism (300.1) and a pipe following plugging driving mechanism (300.2), the front end of the plugging driving mechanism (300) is fixedly provided with a plugging mechanism (200), the inner chuck mechanism (100) is fixed at the front end of the telescopic arm mechanism (400), the telescopic arm mechanism (400) comprises a pipe penetrating left arm (401) and a pipe following right arm (402), an automatic foaming production line for installing the on-line automatic concentricity pipe penetrating plugging device is integrated with on-line pipe penetrating clamping at an upper steel pipe work part and on-line pipe penetrating and plugging actions at a foaming work part, and at least four workers are reduced to 1, so that two crown blocks are eliminated.
Description
Technical Field
The invention belongs to the technical field of heat-insulating steel pipes, and particularly relates to an automatic pipe penetrating and plugging device and an automatic foaming production line.
Background
The polyurethane composite heat-insulating pipe is formed by adopting a pipe-in-pipe method forming process, specifically, a conveying steel pipe is penetrated into a high-density polyethylene outer sleeve, then polyurethane hard foam is injected into an annular space between the conveying steel pipe and the high-density polyethylene outer sleeve through a polyurethane foaming machine, a heat-insulating layer is formed after reaction and solidification, and meanwhile, the steel pipe and the polyethylene outer sleeve are bonded to form an integrated foam jacket structure. The two-step process is adopted, the concentricity fixing piece is fixedly sleeved between the inner working hot water pipe and the outer protective layer, and then the heat insulation material of the polyurethane foaming composition is poured in the gap between the inner working hot water pipe and the outer protective layer. Firstly, penetrating a pipe with concentricity, namely penetrating a steel pipe into a high-density polyethylene pipe, wherein in the prior art, a crane is hung on a roller way, the roller way is aligned with the high-density polyethylene pipe, and the roller way is started to send the steel pipe into the polyethylene pipe; and secondly, foaming polyurethane, namely hoisting the penetrated double pipes to a foaming frame by a crane, fixing the sleeve by using a multi-station foaming frame, then plugging a head, pouring polyurethane foaming composition, adjusting the mixing ratio of a high-pressure foaming machine, setting the working temperature, the pouring time and measuring the flow of equipment. And (3) inserting a foaming gun pouring nozzle of the high-pressure foaming machine into the pouring hole, pouring, curing, disassembling the plug, and pouring the Kong Buhan plugging sheet to obtain the finished product.
When a steel pipe with the length of 12 meters is penetrated into a high-density polyethylene pipe, the prior art generally adopts the steel pipe to obtain forward power from a roller way to penetrate the high-density polyethylene pipe, then a crane lifts the two pipes onto a foaming bench together, the bench is closed, the steel pipe is jacked, a plug is inserted, a foaming material is poured, the crane is lifted out, and the crane is lifted away after hole filling. If the automatic continuous production line is adopted, two ends of the steel pipe are required to be clamped in the high-density polyethylene pipe in a penetrating way, and annular holes at the two ends are simultaneously plugged.
Thus, a reasonable-design and convenient-to-operate automatic concentricity pipe penetrating plugging device is very needed, and the following requirements are met:
(1) The concentricity is used for penetrating the pipe, namely ensuring that the steel pipe penetrates into the high-density polyethylene pipe coaxially;
(2) The two ends of the sealing plug are automatically sealed in the annular plugs;
(3) On-line, namely, the two actions are automatically completed on the foaming frame, and the device does not influence the clamping and the loosening of the foaming frame.
The on-line automatic concentricity pipe penetrating and plugging device is designed to finish automatic concentricity pipe penetrating and plugging on line, and becomes a practical technology of an automatic production line of the polyurethane composite heat-insulating pipe.
Disclosure of Invention
Aiming at the problems existing in the prior art, the invention aims to provide an on-line automatic concentricity pipe penetrating and plugging device and an automatic foaming production line, and solves the technical problems of on-line pipe penetrating and plugging of steel pipes.
The invention is realized in such a way that an on-line automatic concentricity pipe penetrating plugging device comprises
The inner chuck mechanism is used for clamping the steel pipe from an inner hole at the end part of the steel pipe;
the plugging mechanism is used for plugging the annular space between the steel pipe and the thermoplastic outer pipe and is coaxially arranged outside the inner chuck mechanism;
the plugging driving mechanism is used for driving the plugging mechanism to insert into or withdraw from the annular space along the axis of the steel pipe and comprises a pipe penetrating plugging driving mechanism and a pipe following plugging driving mechanism, and the front end of the plugging driving mechanism is fixedly provided with the plugging mechanism;
the telescopic arm mechanism drives the inner chuck mechanism and the clamped steel pipe to concentrically penetrate into the thermoplastic outer pipe and align and position with the thermoplastic outer pipe, and the inner chuck mechanism is fixed at the front end of the telescopic arm mechanism; the telescopic arm mechanism comprises a pipe penetrating left arm and a pipe following right arm;
the pipe penetrating and blocking driving mechanism is fixed on a fixed arm of a left pipe penetrating arm, and the pipe penetrating and blocking driving mechanism is arranged on the inner chuck mechanism.
Further, the inner chuck mechanism comprises a telescopic propping mechanism, a reinforcing locking mechanism and a rotary driving mechanism, wherein the reinforcing locking mechanism drives the telescopic propping mechanism to prop against the inner hole wall at the end part of the steel pipe, and the rotary driving mechanism drives the reinforcing locking mechanism to keep continuous propping force.
Further, the plugging mechanism comprises a ring sleeve main body, an expanding mechanism and a radial liquid sealing mechanism are slidably arranged on the ring sleeve main body, the radial liquid sealing mechanism moves along the ring sleeve main body to squeeze the expanding mechanism, and the expanding mechanism is arched and pressed against the inner wall of the thermoplastic outer tube.
Further, the plugging driving mechanism comprises a screw sleeve and a nut sleeve, the nut sleeve is in spiral fit on the screw sleeve, and the front end of the nut sleeve is fixedly connected with the plugging mechanism.
Further, for the pipe-following plugging driving mechanism, an annular driving tooth part is further arranged on the inner annular surface of the screw sleeve, the driving gear is meshed with the annular driving tooth part, the driving gear is fixedly connected with an output shaft of a driving motor, and the driving motor is fixed on the inner chuck mechanism; for the pipe penetrating and plugging driving mechanism, a sleeve-shaped driving gear is fixed on the outer cylindrical surface of the screw sleeve, the driving gear is meshed with the sleeve-shaped driving gear, the driving gear is fixedly connected with an output shaft of a driving motor, and the driving motor is fixed on the lifting pipe penetrating seat.
Further, the left pipe penetrating arm is arranged on the lifting pipe penetrating seat in a telescopic mode, and the right pipe penetrating arm is fixedly arranged on the right side of the steel pipe in a telescopic mode.
An automatic production line for a heat preservation pipe foaming layer of the on-line automatic concentricity pipe penetrating and plugging device comprises an upper plastic pipe work part, a foaming work part and an upper steel pipe work part, wherein the upper steel pipe work part comprises a steel pipe roller way and an upper steel pipe rack which is arranged vertically to the foaming production line, and a pipe pulling device is arranged on the upper steel pipe rack; the upper plastic pipe working part comprises a plastic pipe roller way and an upper plastic pipe rack which is arranged vertically to the foaming production line, an auxiliary roller way is arranged in the plastic roller way in a sliding manner, and a pipe shifting device is arranged on the upper plastic pipe rack; the foaming work part comprises a foaming roller way, the plastic pipe roller way, the foaming roller way and the steel pipe roller way are positioned on the same straight line and are arranged at intervals, and the two sides of the foaming work part and the upper steel pipe work part are provided with the on-line automatic concentricity pipe penetrating and plugging device.
Further, a lifting type pipe penetrating seat is arranged between the upper plastic pipe working part and the foaming working part, a pipe penetrating blocking driving mechanism is arranged on the lifting type pipe penetrating seat, and the lifting type pipe penetrating seat is fixed on the lifting mechanism; the pipe-following blocking driving mechanism is fixedly arranged outside the upper steel pipe work part.
An automatic production method of an automatic production line of a foaming layer of a heat preservation pipe,
the method comprises the following steps:
1) Both ends are simultaneously provided with pipes
A plurality of high-density polyethylene plastic pipes are arranged on the upper plastic pipe rack side by side, and the plastic pipes are shifted to a plastic pipe roller way by a pipe shifting device; a plurality of steel pipes are arranged on the upper steel pipe rack side by side, and the steel pipes are dialed to a steel pipe roller way by a pipe dialing device;
2) The plastic pipe enters the foaming work part
The lifting mechanism descends to drive the lifting type pipe penetrating seat to descend so as to leave the roller way; the plastic pipe roller way rotates the supporting roller to drive the plastic pipe to advance to the foaming roller way and is positioned and fixed;
3) Threading clamp
The lifting mechanism ascends to drive the lifting type pipe penetrating seat to ascend in place, and the pipe penetrating left arm drives the inner chuck mechanism to extend out to penetrate through the plastic pipe and clamp the steel pipe from the inner hole at the left end of the steel pipe; the inner chuck mechanism is driven by the right arm of the pipe to extend out from an inner hole at the right end of the steel pipe to clamp the steel pipe;
4) Online poling
The left pipe penetrating arm and the inner chuck mechanism fixed at the front end of the left pipe penetrating arm retract, and extend along with the right pipe penetrating arm and the inner chuck mechanism fixed at the front end of the right pipe penetrating arm to drive the steel pipe to concentrically penetrate into the plastic pipe and align and position with the plastic pipe;
5) Two-end plugging
Starting a pipe penetrating and plugging driving mechanism and a pipe following plugging driving mechanism, wherein the plugging mechanism enters an annular space between the steel pipe and the thermoplastic outer pipe;
6) Pouring and foaming
The high-pressure foaming gun is inserted into the pouring hole of the plastic pipe, the foaming gun is started to pour in foaming medium, the plugging mechanism is used for exhausting air and sealing liquid finally, and after a few minutes, the foaming is completed;
7) Finished product pipe laying and patching
The lifting mechanism descends to drive the lifting type pipe penetrating seat to descend so as to leave the roller way; the foaming roller way rotates the supporting roller to drive the plastic pipe to advance to the plastic pipe roller way and to be dialed to a finished pipe rack through the pipe dialing device, and an operator seals the pouring hole through hot-melting welding by patching;
returning to step 1), and repeating the process.
Further, in the process that the plastic pipe enters a foaming work part or a finished pipe is discharged, the auxiliary roller way stretches out and is connected to the foaming roller way of the foaming work part, and the auxiliary roller way retracts after the action is finished.
The on-line automatic concentricity threading and plugging device can firmly jack the inner hole wall of the steel pipe end under the synergistic effect of the telescopic jack mechanism, the reinforcement locking mechanism and the reinforcement adjusting mechanism, and meanwhile, the roller drives the outer surface of the steel pipe to enable the steel pipe to advance along the axis, and the inner clamping head clamps the inner wall to be concentric with the outer pipe and penetrate into the outer pipe.
The automatic foaming production line utilizes the on-line automatic concentricity pipe penetrating and plugging device integrates on-line pipe penetrating clamping at the upper steel pipe work part and on-line pipe penetrating and plugging actions at the foaming work part, at least four workers are reduced to 1, two crown blocks are omitted, the efficiency is improved, and the cost is greatly reduced.
Drawings
FIG. 1 is a front cross-sectional view of a threading state of an on-line automatic concentricity threading plugging device according to the present invention;
FIG. 2 is an enlarged view I of FIG. 1 of an on-line automatic concentricity threading plugging device according to the present invention;
fig. 3 is an enlarged view II of fig. 1 of an on-line automatic concentricity threading plugging device according to the present invention.
Fig. 4 is a three-view showing a clamping state of an inner chuck mechanism of an on-line automatic concentricity pipe-penetrating plugging device according to the present invention. a) Is a front view of the inner chuck mechanism; b) Is a top-down cross-sectional view of the inner chuck mechanism; c) A left cross-sectional view of the inner chuck mechanism;
fig. 5 is a schematic view of the retracted position of the inner jaw mechanism of an in-line automatic concentricity threading plugging device of the present invention.
FIG. 6 is a schematic illustration of the plugging mechanism of the on-line automatic concentricity threading plugging device according to the present invention;
FIG. 7 is an enlarged view IV of FIG. 6 of a plugging mechanism of an on-line automatic concentricity threading plugging device according to the present invention;
FIG. 8 is a schematic diagram showing the working state of a plugging mechanism of an on-line automatic concentricity pipe penetrating plugging device according to the present invention;
FIG. 9 is a front view of an automatic foaming line for insulating pipes according to the present invention;
FIG. 10 is a top view of an automated foaming line for insulating tubing according to the present invention;
FIG. 11 is a schematic diagram of an automated production method of an automatic foaming production line of a thermal insulation pipe according to the present invention;
reference numerals in the above figures:
1 steel pipe, 2 thermoplastic outer pipe, 3 upper plastic pipe work part, 4 foaming work part, 5 upper steel pipe work part, 6 lifting mechanism
100 inner chuck mechanism, 200 plugging mechanism, 300 plugging driving mechanism, 400 telescopic arm mechanism
20 telescopic jacking mechanism, 21 multi-face cone, 22 cone sliding guide post, 23 chute, 24 jacking block and 25 outer sleeve
30 force-increasing locking mechanism, 31 cam, 32 left connecting rod, 33 right connecting rod, 34 cam shaft, 36 cam main body axis
40 reinforcing adjusting mechanism, 41 stud, 42 sliding hole, 43 adjusting bolt, 44 hand wheel
50 a rotation driving mechanism, 51 a driving motor, 52 a rotation seat
203 ring sleeve main body, 203.1 back plate, 204 guide part, 205 flange part, 206 buffer groove, 207 outer fastening ring,
208 inner fastening ring, 209 exhaust hole
220 expansion mechanism, 221 outer rubber expansion ring, 222 inner rubber expansion ring, 223 first annular main body part, 224 first sliding fit part
223.1 annular hollowed-out part, 223.2 positioning plane part, 223.3 first inclined conical surface, 223.4 expansion peripheral surface part
230 radial sealing liquid mechanism, 231 outer metal deformation ring, 232 inner metal deformation ring, 233 second sliding fit part, 234 annular main body, 234.1 second inclined conical surface, 235 metal deformation part
235.1 outer guide ring surface, 235.2 inner ring surface, 235.3 outer sealing liquid inclined surface and 235.4 annular collapse part
240 exhaust mechanism, 241 air valve rod, 242 adjusting screw sleeve, 243 air closing taper table, 244 spring, 245 exhaust blind hole, 246 communication hole, 247 exhaust gap
209.1 guide hole portion, 209.2 screw hole portion, 209.3 taper hole portion
300 seal driving mechanism, 300.1 pipe penetrating seal driving mechanism, 300.2 pipe following seal driving mechanism, 301 screw sleeve, 302 nut sleeve, 303 bearing mounting part, 304 annular driving tooth part, 305 support bearing, 306 driving gear, 307 driving motor, 308 sleeve shaped driving gear, 309 guiding structure, 309.1 outer guiding ring surface, 309.2 inner guiding ring surface
400 telescopic arm mechanism, 401 pipe-penetrating left arm, 401.1 fixed arm, 402 pipe-following right arm
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings, which are not intended to limit the scope of the invention.
Referring to fig. 1, an on-line automatic concentricity pipe penetrating plugging device comprises an inner chuck mechanism 100, a plugging mechanism 200, a plugging driving mechanism 300 and a telescopic arm mechanism 400, wherein the telescopic arm mechanism 400 comprises a pipe penetrating left arm 401 and a pipe following right arm 402, the pipe penetrating left arm 401 is arranged on a lifting pipe penetrating seat 403 in a telescopic manner, and the pipe penetrating left arm 401 comprises a fixed arm 401.1.
The plugging drive mechanism 300 comprises a pipe threading plugging drive mechanism 300.1 and a pipe following plugging drive mechanism 300.2, the pipe threading plugging drive mechanism 300.1 being arranged on a first telescopic arm 401.1 of the telescopic arm mechanism 400 and the pipe following plugging drive mechanism 300.2 being arranged on the inner jaw mechanism 100.
The inner chuck mechanism 100 includes a telescopic jack mechanism 20, a booster lock mechanism 30, and a rotary drive mechanism 50. The force-increasing locking mechanism 30 drives the telescopic propping mechanism 20 to prop against the inner hole wall of the steel pipe end part 1, and the rotary driving mechanism 50 drives the force-increasing locking mechanism 30 to maintain continuous clamping force.
The telescopic jacking mechanism 20 comprises a multi-surface cone 21, a plurality of sliding grooves 23 are formed in the surface of the multi-surface cone 21, and jacking blocks 24 are slidably matched in the sliding grooves. The cross section of the multi-sided cone 21 is regular polygon, and the head cross section is smaller than 1/2 of the tail cross section area. The taper angle of the cross section of the polyhedral cone 21 is 45-70 degrees. The multi-surface cone 21 is integrally connected with a cone sliding guide post 22, the cone sliding guide post 22 is slidably arranged in an outer sleeve 25 back and forth, and a top block 24 passes through the outer sleeve 25 to slide in a telescopic manner.
The reinforcement locking mechanism 30 comprises a cam 31, a left connecting rod 32 and a right connecting rod 33, wherein the pin shaft of the left connecting rod 32 is pivoted with the multi-face cone 21; the cam 31 is fixedly arranged on a cam shaft 34, and the cam shaft 34 is fixedly connected with a rotary driving mechanism. The cam is symmetrically provided with a left shaft hole and a right shaft hole, and the circle centers of the left shaft hole and the right shaft hole are connected with the circle center of the cam shaft 34, and the connecting line is a cam main body axis 36. The left shaft hole rotating pin is pivoted with one end of the left connecting rod 32, and the other end of the left connecting rod 32 is pivoted with the multi-face cone 21 through a pin shaft; the right shaft hole rotating pin is pivoted with one end of a right connecting rod 33, and the other end of the right connecting rod 33 is pivoted on the bottom wall of the outer sleeve 25. The cam 31 is switched between a horizontal position and a vertical position by the drive of the rotary drive mechanism. When the axis of the cam main body is in a horizontal position, the left shaft hole is positioned at the forefront, the multi-face cone 21 is positioned at an extending position, and in the extending position, the jacking block 24 is tightly jacked on the inner wall of the steel pipe; when the cam body axis 36 is in the vertical position, the multi-faceted cone 21 is in the retracted position and the top of the roof block 24 is clear of the inner wall of the steel tube.
The device further comprises a reinforcement adjusting mechanism 40, the reinforcement adjusting mechanism 40 comprises a bolt 41 and a sliding hole 42, an adjusting bolt 43 and a hand wheel 44, the bolt 41 is arranged in the sliding hole 42 in the bottom wall of the outer sleeve 25 in a sliding mode, the adjusting bolt 43 is fixedly connected with the bolt 41, the other end of the adjusting bolt 43 is fixedly connected with the hand wheel 44, the adjusting bolt 43 is spirally connected in the bottom wall of the outer sleeve 25, the adjusting bolt 43 is rotated, the bolt 41 can slide back and forth in the sliding hole 42, the distance that the bolt stretches out or retracts back to the sliding hole is adjusted until the locking dead angle alpha between the main body axis 36 and the horizontal axis is-2-0 degrees when the locking force is equal to the required locking force, the cam continues to rotate, and the force of the jacking block against the inner wall of the steel tube is larger than the required locking force, and the main body axis of the cam approaches 0 degrees at the moment, so that the reinforcement locking function is completed.
The cam shaft 34 is fixedly connected with a rotary driving mechanism 50, the rotary driving mechanism 50 comprises a driving motor 51, and the driving motor 51 is connected with the cam shaft 34 through a coupling. The cam shaft 34 is rotatably fixed to a rotary seat 52, and the rotary seat 52 is slidably fitted to the tapered slide guide post 22.
When the steel tube end clamping device is used, the outer sleeve 25 stretches into the end part of the steel tube, the driving mechanism rotates the cam to the horizontal position, the left connecting rod 32, the cam 31 and the right connecting rod 33 are positioned on the same horizontal straight line, the multi-face cone 21 slides to the leftmost end along the cone sliding guide post 22, the ejector block 24 is ejected outwards by the multi-face cone along the sliding groove 23 until the inner wall of the steel tube is tightly ejected, and the inner wall of the end part of the steel tube is clamped by the inner clamping head. When the inner clamping head needs to be released, the driving mechanism rotates the cam to the vertical position, the multi-face cone 21 slides to the rightmost end along the cone sliding guide post 22, the distribution diameter of the sliding groove 23 becomes minimum, the top block 24 is driven to descend to the lowest point, the top block is retracted to the release position from the propping position, and the inner clamping head is released from the inner hole of the steel pipe.
The inner chuck mechanism 100 can firmly prop up the inner hole wall of the steel pipe end under the synergistic effect of the telescopic propping mechanism 20, the reinforcement locking mechanism 30 and the reinforcement adjusting mechanism 40, and meanwhile, the roller drives the outer surface of the steel pipe to enable the steel pipe to move forward along the axis, and the inner chuck clamps the inner wall to be concentric with the outer pipe and penetrate into the outer pipe.
The plugging mechanism 200 comprises an end annular space for plugging between the steel pipe 1 and the thermoplastic resin outer pipe 2, and comprises a ring main body 203, wherein the ring main body 203 comprises a guide part 204 and a flange part 205, an expanding mechanism 220 and a radial liquid sealing mechanism 230 are slidably arranged on the ring main body 203, and a buffer groove 206 is formed between the expanding mechanism 220 and the radial liquid sealing mechanism 230.
The expanding mechanism 220 comprises an outer rubber expansion ring 221 and an inner rubber expansion ring 222, the outer rubber expansion ring 221 is sleeved on the outer cylindrical surface of the guide part 204, and the inner rubber expansion ring 222 is in interference fit in the inner hole of the guide part 204. The outer rubber expansion ring 221 and the inner rubber expansion ring 222 are respectively provided with a first annular body portion 223 and a first sliding fit portion 224 which are integrally formed, and the first annular body portion 223 comprises an annular hollowed-out portion 223.1, a positioning plane portion 223.2, a first inclined conical surface 223.3 and an expansion peripheral surface portion 223.4.
The radial sealing mechanism 230 includes an outer metal deformation ring 231 and an inner metal deformation ring 232, where the outer metal deformation ring 231 and the inner metal deformation ring 232 are respectively provided with a second sliding fit portion 233, an annular main body 234 and a metal deformation portion 235, the annular main body 234 includes a second inclined conical surface 234.1, and the second sliding fit portion 233 is pressed against the first sliding fit portion 224, so that a buffer groove 206 is formed between the second inclined conical surface 234.1 and the first inclined conical surface 223.3. The metal deformation part 235 comprises an outer guide ring surface 235.1 and an inner ring surface 235.2, wherein the outer guide ring surface is a conical surface, the included angle between the conical surface generating line and the horizontal axis is a guide angle alpha, and the guide angle is 3-5 degrees. The top of the metal deformation part 235 comprises an outer sealing liquid inclined plane 235.3, and a collapse part 235.4 is arranged on the outer side of the root part so as to reduce the resistance to the outer deformation. The inclination of the outer guide ring surface gradually thins the root to the top of the metal deformation part 35, which is beneficial to radial deformation of the metal deformation part 235 due to extrusion of foaming medium, so that the top sealing liquid inclined surface 235.3 is abutted against the inner wall of the thermoplastic resin outer tube 1 in a surface contact manner.
The maximum radius R of the outer guide ring surface 235.1 0 Less than the maximum radius R of the expanded peripheral surface portion 223.4 in the unexpanded state 1 The amount of (2) is the residual exhaust amount, and the residual exhaust amount is 3-8 mm.
The expanding mechanism 220 and the radial sealing mechanism 230 are tightly pressed and fixed by an outer fastening ring 207 and an inner fastening ring 208 which are in screw fit with the top hole of the guide part 204.
The collar body 203 is secured to the back plate 203.1. The annular space on the ring sleeve main body 203 is provided with a plurality of exhaust holes 209, the exhaust holes 209 comprise guide hole parts 209.1, threaded hole parts 209.2 and taper hole parts 209.3, and after the outer fastening ring 207 and the inner fastening ring 208 are screwed and fixed, the taper hole parts 209.3 are processed opposite to the threaded hole parts 209.2. The exhaust hole 209 is cooperatively provided with an exhaust mechanism 240. The exhaust mechanism 240 comprises an air valve rod 241, an adjusting screw sleeve 242 and an air closing taper table 243, one end of the air valve rod 241 is clamped in an inner hole of the adjusting screw sleeve 242, the other end of the air valve rod is connected with the air closing taper table 43, and a spring 244 is arranged between the air closing taper table 243 and the adjusting screw sleeve 242. The spring 244 lifts the air-closing abutment 243 such that there is a 5-10mm vent gap 247 between the air-closing abutment 243 and the countersink 209.3. The air valve stem 241 is provided with an exhaust blind hole 245 penetrating the tail, the exhaust blind hole 245 being radially connected to a communication hole 246, said communication hole 246 being exposed in an exhaust gap 247. The aperture of the air discharge blind hole 245 and the communication hole 246 is 5-10mm. The shell of the adjusting screw sleeve 42 comprises a smooth guide part 242.1 and a threaded part 242.2, and a screw driver clamping groove is formed in the tail of the smooth guide part 242.1, so that screw driver screwing operation is facilitated. The vent gap 247 has a radial gap of 5-10mm when the adjustment screw 242 is screwed into the extreme position of the vent hole 29. Of course, the gap may be suitably adjusted to be smaller as appropriate by rotating the adjustment screw 242.
In use, the plugging mechanism 200 is fed into the steel pipe 1 and the outer thermoplastic sleeve 2 by a guiding driving mechanism, and the outer guiding ring surface 235.1 plays a guiding role if the outer thermoplastic sleeve 2 has a non-concentric or non-circular position. In addition, it is sufficient to extrude the thermoplastic tube in-line and to feed it through the upper pipe without stacking thermoplastic bushings, with a 3-8mm margin. At this time, the expanded peripheral surface portion 223.4 is in an unexpanded state, and the expanded peripheral surface portion 223.4 is located at an expansion distance H from the inner wall of the outer thermoplastic sleeve 2, and the expansion distance H is 5 to 10mm. At this time, the spring of the venting mechanism 240 positions the air-closing frustum 243 in the vent gap 247 in communication with the conical bore portion 209.3 so that the spring is not depressed even if a strong air flow is flushed through. During filling, the expansion distance H and the vent gap 247 each have a vent function, and a large amount of air can be rapidly discharged. When the liquid foaming medium reaches the radial sealing mechanism 230, on the one hand, the radial sealing mechanism 230 is pushed along the ring sleeve main body 203 and then the expansion mechanism 220 is extruded, the annular hollowed-out part 223.1 is compressed and the expansion peripheral surface part 223.4 is arched to be pressed against the inner wall of the outer thermoplastic sleeve 1, and the liquid foaming medium cannot enter the buffer groove 206 from the outer side gaps of the outer metal deformation ring 231 and the inner metal deformation ring 232 due to the air in the buffer groove 206, but the metal deformation part 235 deforms radially outwards due to the root pressure being far smaller than the top pressure, so that the top outer sealing liquid inclined surface 235.3 is abutted against the inner wall of the thermoplastic resin outer tube 1 in a surface contact manner. This process is the process of rapid venting and liquid containment accompanying the filling of the liquid foaming medium.
The plugging mechanism 200 can plug the annular space of the steel pipe 1 and the outer thermoplastic sleeve 2 under the synergistic effect of the expanding mechanism 220, the radial liquid sealing mechanism 230 and the exhaust mechanism 240, and meets the requirements of the high-pressure filling and foaming process of the liquid foaming medium.
The plugging driving mechanism 300 comprises a screw sleeve 301 and a nut sleeve 302, wherein the nut sleeve 302 is in screw fit on the screw sleeve 301, the front end of the nut sleeve 302 is fixedly connected with the plugging mechanism 20, specifically, the front end of the nut sleeve 302 is provided with a fixed flange part 302.1, and the fixed flange part 302.1 is fixedly connected with the annular sleeve main body 203. The screw sleeve 301 is provided with a bearing mounting portion 303 on an inner circumferential surface thereof, and a support bearing 305 is fixed to the bearing mounting portion 303, and the support bearing 305 is preferably a tapered roller bearing. The inner ring surface of the screw sleeve 301 of the pipe-following blocking driving mechanism 300.2 is also provided with an annular driving tooth part 304, a driving gear 306 is meshed with the annular driving tooth part 304, the driving gear 306 is fixed on an output shaft of a driving motor 307, and the driving motor 307 of the pipe-following blocking driving mechanism 300.2 is fixed on the outer sleeve 25; the outer cylindrical surface of the screw sleeve 301 of the pipe penetrating and plugging driving mechanism 300.1 is fixed with a sleeve-shaped driving gear 308, the driving gear 306 is meshed with the sleeve-shaped driving gear 308, and the driving motor 307 of the pipe penetrating and plugging driving mechanism 300.1 is fixed on the lifting pipe penetrating seat 403.
The plugging driving mechanism 300 further comprises a guide structure 309, the guide structure 309 comprises an outer guide ring surface 309.1 and an inner guide ring surface 309.2, an outer cylindrical surface of the screw sleeve 301 is provided with an outer threaded portion 301.1 and an outer guide ring surface 309.1, an inner threaded portion 302.1 and an inner guide ring surface 309.2 are arranged on an inner hole wall of the nut sleeve 302, and when the inner threaded portion 302.1 is in screw fit on the outer threaded portion 301.1, the inner guide ring surface 309.2 is in clearance fit on the outer guide ring surface 309.1.
The automatic foaming production line of the heat preservation pipe comprises an upper plastic pipe work part 3, a foaming work part 4 and an upper steel pipe work part 5, wherein the upper steel pipe work part 5 comprises a steel pipe roller way 5.1 and an upper steel pipe frame 5.2 which is vertical to the foaming production line, a pipe shifting device is arranged on the upper steel pipe frame 5.2, the upper plastic pipe work part 3 comprises a plastic roller way 3.1 and an upper plastic pipe frame 3.2 which is vertical to the foaming production line, and an auxiliary roller way 3.3 is arranged in a sliding manner in the plastic roller way 3.1; the upper plastic pipe frame 3.2 is provided with a pipe pulling device, the foaming work part 4 comprises a foaming roller way 4.1, a foaming clamp 4.2 and a finished pipe frame 4.3, a lifting pipe penetrating seat 403 is arranged between the upper plastic pipe work part 3 and the foaming work part 4, the lifting pipe penetrating seat 403 is fixed on a lifting mechanism 6, and the two sides of the foaming work part 4 and the steel pipe work part 5 are provided with the on-line automatic concentricity pipe penetrating plugging devices; specifically, the pipe penetrating and plugging driving mechanism 300.1 is arranged on the lifting pipe penetrating seat 403 between the upper plastic pipe work part 3 and the foaming work part 4, and the pipe penetrating and plugging driving mechanism 300.2 is arranged outside the upper steel pipe work part 5;
an automatic production method of an automatic foaming production line of a heat preservation pipe comprises the following steps:
1) Both ends are simultaneously provided with pipes
A plurality of steel pipes are arranged on the upper steel pipe frame 5.2 side by side, and the steel pipes are poked onto the steel pipe roller way 5.1 by a pipe poking device; a plurality of high-density polyethylene plastic pipes are arranged on the upper plastic pipe frame 3.2 side by side, and are poked onto the plastic pipe roller way 3.1 by a pipe poking device;
2) The plastic pipe enters the foaming work part
The lifting mechanism 6 descends to drive the lifting type tube penetrating seat 403 to descend so as to leave the roller way; the plastic pipe roller way 3.1 extends out of the auxiliary roller way 3.3 and is lapped on the foaming roller way 4.1 of the foaming work part 4; the plastic pipe roller way 3.1 rotates the supporting roller to drive the plastic pipe to advance to the foaming roller way 4.1 and is positioned and fixed;
3) Threading clamp
The lifting mechanism 6 is lifted to drive the lifting type threading seat 403 to be lifted in place. The pipe penetrating left arm 401 drives the inner chuck mechanism 100 to extend out of the plastic pipe and clamp the steel pipe from the inner hole at the left end of the steel pipe; the inner chuck mechanism 100 is driven by the right pipe arm 402 to extend out to clamp the steel pipe from the inner hole at the right end of the steel pipe;
4) Penetrating pipe
The steel tube roller way 3.1 descends to leave the right arm 402 of the following tube and the inner chuck mechanism 100 fixed at the front end of the right arm.
The left pipe penetrating arm 401 and the inner chuck mechanism 100 fixed at the front end thereof retract, and extend along with the right pipe penetrating arm 402 and the inner chuck mechanism 100 fixed at the front end thereof, so as to drive the steel pipe to concentrically penetrate into the plastic pipe and align with the plastic pipe.
5) Two-end plugging
The pipe penetrating and plugging driving mechanism 300.1 and the pipe following plugging driving mechanism 300.2 are started, and the plugging mechanism 200 is driven by the rotation of the plugging driving mechanism 300 to linearly move and then enters the annular space between the steel pipe 1 and the thermoplastic outer pipe 2.
6) Pouring and foaming
The high-pressure foaming gun is inserted into the pouring hole of the plastic pipe, the foaming gun is started to pour in foaming medium, the plugging mechanism 200 is used for exhausting air and sealing liquid finally, and after a few minutes, the foaming is completed.
7) Lower tube, patch
The lifting mechanism 6 descends to drive the lifting type tube penetrating seat 403 to descend so as to leave the roller way; the plastic pipe roller way 3.1 extends out of the auxiliary roller way 3.3 and is lapped on the foaming roller way 4.1 of the foaming work part 4; the foaming roller way 4.1 rotates the supporting roller to drive the plastic pipe to advance to the plastic pipe roller way 3.1 and dial the plastic pipe onto the finished pipe rack 4.3 through the pipe dialing device, and an operator seals the pouring hole through patch hot-melting welding.
Returning to step 1), and repeating the process.
The on-line automatic concentricity threading and plugging device can firmly jack the inner hole wall of the steel pipe end under the synergistic effect of the telescopic jack mechanism, the reinforcement locking mechanism and the reinforcement adjusting mechanism, and meanwhile, the roller drives the outer surface of the steel pipe to enable the steel pipe to advance along the axis, and the inner clamping head clamps the inner wall to be concentric with the outer pipe and penetrate into the outer pipe.
The automatic foaming production line utilizes the on-line automatic concentricity pipe penetrating and plugging device integrates on-line pipe penetrating clamping at the upper steel pipe work part and on-line pipe penetrating and plugging actions at the foaming work part, at least four workers are reduced to 1, two crown blocks are omitted, the efficiency is improved, and the cost is greatly reduced.
Claims (14)
1. An on-line automatic concentricity pipe penetrating plugging device is characterized by comprising
The inner clamping head mechanism (100), the inner clamping head mechanism (100) comprises a telescopic jacking mechanism (20), and the telescopic jacking mechanism (20) is used for clamping the steel pipe from an inner hole at the end part of the steel pipe;
the plugging mechanism (200) is used for plugging the annular space between the steel pipe and the thermoplastic outer pipe, and the plugging mechanism (200) and the telescopic jacking mechanism (20) are coaxially arranged outside the inner chuck mechanism (100); the plugging mechanism (200) comprises a ring sleeve main body (203), wherein an expanding mechanism (220) and a radial liquid sealing mechanism (230) are arranged on the ring sleeve main body (203) in a sliding manner, and the radial liquid sealing mechanism (230) moves along the ring sleeve main body (203) to extrude the expanding mechanism (220) so that the expanding mechanism (220) is arched and pressed against the inner wall of the thermoplastic outer tube (2);
the plugging driving mechanism (300) is used for driving the plugging mechanism to be inserted into or withdrawn from the annular space along the axis of the steel pipe, and the plugging driving mechanism (300) comprises a pipe penetrating plugging driving mechanism (300.1) and a pipe following plugging driving mechanism (300.2); the plugging driving mechanism (300) comprises a screw sleeve (301) and a nut sleeve (302), the nut sleeve (302) is in spiral fit on the screw sleeve (301), and the front end of the nut sleeve (302) is fixedly connected with the plugging mechanism (200);
the telescopic arm mechanism (400) drives the inner chuck mechanism and the clamped steel tube to concentrically penetrate into the thermoplastic outer tube and align and position with the thermoplastic outer tube, and the front end of the telescopic arm mechanism (400) and the telescopic jacking mechanism are coaxially fixedly provided with the inner chuck mechanism (100); the telescopic arm mechanism (400) comprises a pipe penetrating left arm (401) and a pipe following right arm (402);
the screw sleeve (301) of the pipe penetrating and plugging driving mechanism (300.1) is coaxially and rotatably arranged on the fixed arm (401.1) of the pipe penetrating left arm (401), and the screw sleeve (301) of the pipe penetrating and plugging driving mechanism (300.2) is coaxially and rotatably arranged on the inner chuck mechanism (100).
2. The on-line automatic concentricity threading plugging device according to claim 1, wherein the inner chuck mechanism (100) comprises a force-increasing locking mechanism (30) and a rotary driving mechanism (50), the force-increasing locking mechanism (30) drives the telescopic jacking mechanism (20) to jack against the inner hole wall at the end part of the steel pipe (1), and the rotary driving mechanism (50) drives the force-increasing locking mechanism (30) to maintain continuous jacking force.
3. The on-line automatic concentricity threading plugging device according to claim 1, wherein the telescopic jacking mechanism (20) comprises a multi-surface cone (21) and an outer sleeve (25), and the multi-surface cone (21) is slidably arranged in the outer sleeve (25) through a cone sliding guide post (22); the cone sliding guide pillar (22) is integrally connected with the multi-face cone (21), the surfaces of the multi-face cones (21) are provided with a plurality of sliding grooves (23), a top block (24) is slidably matched in each sliding groove, and the top block (24) simultaneously penetrates through the outer sleeve (25) to stretch and slide.
4. The on-line automatic concentricity threading plugging device according to claim 2, wherein the force-increasing locking mechanism (30) comprises a cam (31), a left connecting rod (32) and a right connecting rod (33), the left connecting rod (32) is pivotally connected with the conical sliding guide post (22), and the right connecting rod (33) is pivotally connected with the bottom wall of the outer sleeve (25).
5. An on-line automatic concentricity threading plugging device according to claim 3, wherein the rotary driving mechanism (50) comprises a driving motor (51), an output shaft of the driving motor (51) is in driving connection with the cam shaft (34), and the cam (31) is fixedly connected with the cam shaft (34); the driving motor (51) drives the cam (31) to switch between a horizontal position and a vertical position, when the main body axis of the cam (31) is in the horizontal position, the polyhedral cone is in an extending position, and in the extending position, the jacking block (24) is tightly jacked on the inner wall of the steel pipe.
6. The on-line automatic concentricity threading plugging device according to claim 2, wherein the expansion mechanism (220) comprises an outer rubber expansion ring (221) and an inner rubber expansion ring (222), the ring sleeve main body (203) comprises a guide part (204), and the outer rubber expansion ring (221) and the inner rubber expansion ring (222) are slidably and adjustably sleeved on the guide part (204) through an inner hole and an outer periphery respectively; the outer rubber expansion ring (221) and the inner rubber expansion ring (222) are respectively provided with a first annular main body part (223) and a first sliding fit part (224) which are integrally formed, and the first sliding fit part (224) moves to the annular sleeve main body along the guide part (204) to compress the first annular main body part (223) to expand and abut against the outer wall of the steel pipe or the inner wall of the thermoplastic outer pipe.
7. The on-line automatic concentricity threading plugging device according to claim 2, wherein the radial liquid sealing mechanism (230) comprises an outer metal deformation ring (231) and an inner metal deformation ring (232), the outer metal deformation ring (231) and the inner metal deformation ring (232) are respectively provided with a second sliding matching part (233), an annular main body (234) and a metal deformation part (235) which are integrally formed, and the metal deformation part (235) can radially deform to be abutted against the outer wall of the steel pipe or the inner wall of the thermoplastic outer pipe.
8. The on-line automatic concentricity threading plugging device according to claim 1, wherein a buffer groove (206) is formed between the expansion mechanism (220) and the radial liquid sealing mechanism (230); the expanding mechanism (220) and the radial liquid sealing mechanism (230) are tightly pressed and fixed through an outer fastening ring (207) and an inner fastening ring (208) which are in spiral fit with a hole at the top of the guide part (204).
9. The on-line automatic concentricity threading pipe plugging device according to claim 1, wherein for the pipe following plugging driving mechanism (300.2), an annular driving tooth part (304) is further arranged on the inner annular surface of the screw sleeve (301), the driving gear (306) is meshed with the annular driving tooth part (304), the driving gear (306) is fixedly connected with an output shaft of the driving motor (307), and the driving motor (307) is fixed on the inner chuck mechanism; for the pipe penetrating and plugging driving mechanism (300.1), a sleeve-shaped driving gear (308) is fixed on the outer cylindrical surface of the screw sleeve (301), the driving gear (306) is meshed on the sleeve-shaped driving gear (308), the driving gear (306) is fixedly connected with an output shaft of a driving motor (307), and the driving motor (307) is fixed on a lifting pipe penetrating seat (403).
10. The on-line automatic concentricity threading plugging device according to claim 1, wherein the threading left arm (401) is telescopically arranged on the lifting threading seat (403), and is telescopically and fixedly arranged on the right side of the steel pipe along with the right arm (402).
11. An automatic production line for installing the insulating pipe foaming layer of the on-line automatic concentricity pipe penetrating plugging device according to any one of claims 1 to 9 is characterized by comprising an upper plastic pipe work part (3), a foaming work part (4) and an upper steel pipe work part (5), wherein the upper steel pipe work part (5) comprises a steel pipe roller way (5.1) and an upper steel pipe frame (5.2) which is arranged vertically to the foaming production line, and a pipe pulling device is arranged on the upper steel pipe frame (5.2); the upper plastic pipe working part (3) comprises a plastic pipe roller way (3.1) and an upper plastic pipe rack (3.2) which is vertically arranged with the foaming production line, an auxiliary roller way (3.3) is arranged in the plastic roller way (3.1) in a sliding way, and a pipe shifting device is arranged on the upper plastic pipe rack (3.2); the foaming work portion (4) comprises a foaming roller way (4.1), a plastic pipe roller way (3.1), the foaming roller way (4.1) and a steel pipe roller way (5.1) are positioned on the same straight line and are arranged at intervals, and the two sides of the foaming work portion (4) and the upper steel pipe work portion (5) are provided with the on-line automatic concentricity pipe penetrating and plugging device.
12. The automatic production line for the foaming layer of the heat preservation pipe according to claim 11, wherein a lifting type pipe penetrating seat (403) is arranged between the upper plastic pipe working part (3) and the foaming working part (4), a pipe penetrating and plugging driving mechanism (300.1) is arranged on the lifting type pipe penetrating seat (403), and the lifting type pipe penetrating seat (403) is fixed on the lifting mechanism (6); the pipe-following blocking driving mechanism (300.2) is fixedly arranged outside the upper steel pipe work part (5).
13. An automated production method of an automated production line for foaming layers of heat preservation pipes according to claim 11 or 12, characterized in that,
the method comprises the following steps:
1) Both ends are simultaneously provided with pipes
A plurality of thermoplastic outer tubes are arranged on the upper plastic tube rack (3.2) side by side, and the thermoplastic outer tubes are poked onto a plastic tube roller way (3.1) by a tube poking device; a plurality of steel pipes are arranged on the upper steel pipe frame (5.2) side by side, and the steel pipes are poked onto a steel pipe roller way (5.1) by a pipe poking device;
2) The plastic pipe enters the foaming work part
The lifting mechanism (6) descends to drive the lifting type pipe penetrating seat (403) to descend so as to leave the roller way; the plastic pipe roller way (3.1) rotates the supporting roller to drive the plastic pipe to advance to the foaming roller way (4.1) and is positioned and fixed;
3) Threading clamp
The lifting mechanism (6) is lifted to drive the lifting type pipe penetrating seat (403) to be lifted in place, and the pipe penetrating left arm (401) drives the inner chuck mechanism (100) to extend out to penetrate through the plastic pipe and clamp the steel pipe from the inner hole at the left end of the steel pipe; the inner chuck mechanism (100) is driven by the right pipe arm (402) to extend out to clamp the steel pipe from the inner hole at the right end of the steel pipe;
4) Online poling
The pipe penetrating left arm (401) and the inner chuck mechanism (100) fixed at the front end thereof retract, and extend along with the pipe right arm (402) and the inner chuck mechanism (100) fixed at the front end thereof, so as to drive the steel pipe to concentrically penetrate into the plastic pipe and align and position with the plastic pipe;
5) Two-end plugging
Starting a pipe penetrating and plugging driving mechanism (300.1) and a pipe following and plugging driving mechanism (300.2), wherein the plugging mechanism (200) enters an annular space between the steel pipe (1) and the thermoplastic outer pipe (2);
6) Pouring and foaming
The high-pressure foaming gun is inserted into the pouring hole of the plastic pipe, the foaming gun is started to pour in foaming medium, the plugging mechanism (200) is used for exhausting air and sealing liquid at last, and after waiting for a plurality of minutes, the foaming is completed;
7) Finished product pipe laying and patching
The lifting mechanism (6) descends to drive the lifting type pipe penetrating seat (403) to descend so as to leave the roller way; the foaming roller way (4.1) rotates the supporting roller to drive the plastic pipe to advance to the plastic pipe roller way (3.1) and dial the plastic pipe to a finished pipe rack through a pipe dialing device, and an operator seals the pouring hole through patch hot-melting welding;
returning to step 1), and repeating the process.
14. An automated production method according to claim 13, characterized in that, in the process of entering the thermoplastic outer tube into the foaming section or into the finished tube, the secondary roller (3.3) is extended and overlapped onto the foaming roller (4.1) of the foaming section (4), and after the completion of the action, the secondary roller (3.3) is retracted.
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| CN201810423668.5A CN110421774B (en) | 2018-05-06 | 2018-05-06 | Online automatic concentricity poling plugging device and automatic foaming production line |
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| CN110421774B true CN110421774B (en) | 2023-11-10 |
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