CN113878836B

CN113878836B - PVC-U pipe extrusion molding machine head with changeable pipe diameter

Info

Publication number: CN113878836B
Application number: CN202111110406.1A
Authority: CN
Inventors: 于玉真; 张王康; 荆孟杰
Original assignee: Yancheng Institute of Technology
Current assignee: Yancheng Institute of Technology
Priority date: 2021-09-23
Filing date: 2021-09-23
Publication date: 2023-05-12
Anticipated expiration: 2041-09-23
Also published as: CN113878836A

Abstract

The invention relates to the field of pipe molding, in particular to a PVC-U pipe extrusion molding machine head with changeable pipe diameter, which comprises a transmission mechanism, wherein a feeding mechanism is connected to the transmission mechanism, one side of the feeding mechanism is connected with a driving mechanism, the driving mechanism is connected with a supporting mechanism, a casing is fixed at one end of the transmission mechanism, a material limiting mechanism is connected with the feeding mechanism, and the feeding mechanism is in transmission connection with the transmission mechanism. The material can be pushed into the machine seat to be heated and melted through the transmission mechanism, the material is pushed out of the extrusion mechanism through the transmission mechanism, and the extrusion mechanism can be matched with various types to further realize production of pipes with different diameter sizes; the extrusion mechanism is supported by the supporting mechanism; the feeding of the feeding mechanism can be limited by the arranged limiting mechanism; the driving mechanism can control not only the material limiting mechanism but also the supporting mechanism to support the extrusion mechanism.

Description

PVC-U pipe extrusion molding machine head with changeable pipe diameter

Technical Field

The invention relates to the field of pipe molding, in particular to a PVC-U pipe extrusion molding machine head with a changeable pipe diameter.

Background

The PVC-U pipeline is produced with sanitary polyvinyl chloride resin as main material, proper amount of stabilizer, lubricant, stuffing, color adding agent, etc. and through extrusion in plastic extruder and injection molding in injection molding machine, and through cooling, solidification, setting, inspection, packing and other steps, the production of pipe and pipe is completed. Excellent physical and chemical properties, high chemical corrosion resistance, high impact strength, small fluid resistance, aging resistance and long service life, and is an ideal material for building water supply and drainage.

However, when the existing PVC-U pipe is produced, raw materials are extruded and molded through an extruder, and then cooled, solidified and shaped; at present, in the production process of the extruder, one extruder can only extrude one type of pipe, and after the pipe is discharged, the pipe is cut, so that the pipes with different length and size are obtained; because the extruder head is provided with only one discharge hole, the types of discharge are the same, and the extruder heads with different types need to be replaced in order to obtain the pipes with different sizes; when the extruder head is stopped, more tailings can remain in the extruder head, the tailings cannot be timely discharged out of the extruder head, the tailings must be pushed out through subsequent materials when the extruder head is started next time, and the pushed tailings cannot be utilized; when the machine is stopped, the materials in the feeding box cannot be just put into the internal production of the machine head, so that some deviation is generated with the production plan, the materials are wasted, and the feeding box does not supply the materials before the machine is stopped, so that the production requirement is met.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a PVC-U pipe extrusion molding machine head with a changeable pipe diameter.

The technical scheme adopted for solving the technical problems is as follows: the PVC-U pipe extrusion molding machine head with the changeable pipe diameter comprises a transmission mechanism, wherein a feeding mechanism is connected to the transmission mechanism, one side of the feeding mechanism is connected with a driving mechanism, the driving mechanism is connected with a supporting mechanism, the driving mechanism is positioned on one side of a casing, the casing is fixed at one end of the transmission mechanism, a limited material mechanism is slidingly connected above the casing, the limited material mechanism is connected with the feeding mechanism, and the feeding mechanism is in transmission connection with the transmission mechanism; the transmission mechanism is connected with the extrusion mechanism, the extrusion mechanism is positioned in the casing, and the extrusion mechanism is connected with the supporting mechanism.

Preferably, the transmission mechanism comprises a support, one end of the support is fixed with a base, and a heating ring for heating raw materials is arranged in the base; a motor is fixed on the side wall of the support, a spiral feeding rod is connected to the output end of the motor, and the spiral feeding rod is matched with a feeding hole in the support; the surface of the spiral feeding rod is provided with a first sprocket, a chain matched with the first sprocket is sleeved on the first sprocket, a second sprocket is sleeved on the chain, the second sprocket is matched with the first sprocket, and the diameter size of the second sprocket is larger than that of the first sprocket; the second chain wheel is fixed on a stirring shaft of the feeding mechanism.

Preferably, the transmission mechanism further comprises a housing located above the support, and a protective cover is mounted on the top of the housing and fixed on the side wall of the feeding box of the feeding mechanism.

Preferably, the feeding mechanism comprises a feeding hopper fixed above a support of the transmission mechanism, a feeding box is fixed above the feeding hopper, a stirring shaft rotating with the feeding box is arranged inside the feeding box, a plurality of stirring rods positioned inside the feeding box are arranged on the surface of the stirring shaft, two flywheels are arranged at one end of the stirring shaft, a first connecting rod is movably connected between the two flywheels, a sieve plate is movably connected at the bottom of the first connecting rod, and a plurality of sieve holes which are uniformly distributed are formed in the sieve plate; a rotating rod is fixed at one end of the stirring shaft, which is far away from the flywheel, and a first support fixed on the feeding box is sleeved on the stirring shaft; the rotating rod is rotationally connected with a second connecting rod, and the bottom end of the second connecting rod is movably connected with the end part of the sieve plate; the sieve plate is in sliding connection with a notch formed on the inner wall of the feeding box; and a material blocking component on the limited material mechanism is arranged below the screen plate.

Preferably, the feeding mechanism further comprises a feeding chute arranged on the side wall of the feeding hopper, a rotating plate positioned inside the feeding chute is arranged on the feeding hopper, and the rotating plate is rotationally connected with the feeding hopper.

Preferably, the material limiting mechanism comprises a material blocking assembly positioned in the feeding box, a movable plate is fixedly connected to the side wall of the material blocking assembly, a sliding plate is arranged on the side wall of the movable plate, a sliding groove is formed in the sliding plate, a guide groove is formed in the lower portion of the sliding plate, a guide block matched with the guide groove is arranged in the guide groove, a stabilizing plate is fixed to the bottom of the guide block, and the stabilizing plate is fixed to the top of the casing.

Preferably, the material blocking assembly comprises a fixed pin fixed on the side wall of the feeding box, a rotating sleeve connected with the fixed pin in a rotating mode is sleeved on the fixed pin, the side wall of the rotating sleeve is fixed at the end portion of the material blocking plate, the material blocking plate is fixed with the moving plate, one end of a torsion spring is fixed in the rotating sleeve, the fixed pin is sleeved in the torsion spring, and the other end of the torsion spring is fixed on the side wall of the fixed pin.

Preferably, the material limiting mechanism further comprises a screw rod fixed inside the sliding plate, a second support is connected to the outside of the screw rod through threads in a rotating mode, the second support is fixed on the first bevel gear, the second support is fixed on the inner wall of the support column, and the screw rod and the second support are matched with the sliding groove; and a third bevel gear on the driving mechanism is meshed below the first bevel gear.

Preferably, the driving mechanism comprises a third bevel gear matched with the material limiting mechanism, a transmission rod is fixed on the side surface of the third bevel gear, a third bevel gear meshed with the second bevel gear is fixed at the end part of the transmission rod, which is far away from the first bevel gear, and the transmission rod is connected to the inner wall of a support column of the material limiting mechanism through a bearing; the end part of the second bevel gear is fixed at the end part of the rotary rod, two driving wheels are fixed on the surface of the rotary rod, driven wheels matched with the driving wheels are sleeved on the driving wheels, a plurality of jacks are arranged on the driven wheels, a bolt is arranged in each jack, a tightening sleeve abutted to the bolt is arranged at the end part of each bolt, and the tightening sleeve is connected with the driving wheels through threads; one end of the rotary rod is fixed with a rotary wheel, a hexagonal hole is formed in a hub protruding outwards of the rotary wheel, and a crank is arranged on the hub; the rotary rod is rotationally connected with the driving box, the driving box is fixed on the side wall of the casing, and the end part of the steel wire rope on the supporting mechanism is fixed on the driven wheel.

Preferably, the supporting mechanism comprises a steel wire rope fixed with the driven wheel, the end part of the steel wire rope, far away from the driven wheel, is fixed on a supporting sleeve, a guide rod is fixed in the middle of the supporting sleeve, a spring is sleeved on the guide rod, the spring is positioned in the supporting rod, the supporting rod is a telescopic rod, the guide rod slides in the supporting rod, the steel wire rope is positioned on two sides of the supporting rod, the steel wire rope is slidably mounted with pulleys mounted on the side wall of the casing, and the bottom of the supporting sleeve is abutted to the outer wall of an outer sleeve on the extruding mechanism.

Preferably, the extrusion mechanism comprises an outer sleeve which is abutted against the supporting mechanism, an inner sleeve which is matched with the outer sleeve is arranged in the outer sleeve, the outer sleeve is connected to the end part of the air guide sleeve through threads, an air guide ball is arranged in the air guide sleeve, one end of the air guide ball is connected with a fixed block, the inner sleeve is connected to the fixed block through threads, a cross rod is fixed to one end of the air guide ball, a fixing rod which is in a cross-shaped structure is fixed to the end part of the cross rod, the air guide sleeve and the fixing rod are fixed to the support through nuts, and the air guide sleeve is matched with a feed inlet on the transmission mechanism.

The invention has the beneficial effects that:

(1) The material can be pushed into the machine seat to be heated and melted through the transmission mechanism, the material is pushed out of the extrusion mechanism through the transmission mechanism, and the extrusion mechanism can be matched with various types to further realize production of pipes with different diameter sizes; the supporting mechanism is arranged to stabilize the extruding mechanism, so that the extruding mechanism can not incline or crack when extruding the pipe, and the production quality of the pipe is further ensured; the feeding mechanism can control the feeding of materials in the machine base, so that the effect of completely removing the materials in the feeding port is achieved, and the feeding of the feeding mechanism can be limited by the aid of the feeding limiting mechanism; the driving mechanism can control not only the material limiting mechanism but also the supporting mechanism to support the extrusion mechanism. Heating to 90-120 ℃ through the heating ring, so that the material forms a molten state and is pushed by the spiral feeding rod until the material is extruded and shaped from the extruding mechanism; the motor that sets up rotates through the rotation that drives spiral feed rod, simultaneously, and the motor rotates and drives first sprocket and rotate, and when first sprocket rotated, first sprocket passed through the chain and drives the second sprocket and rotate to realize that the second sprocket drives the flywheel and rotate, thereby the flywheel rotates in step, because the diameter size of second sprocket is greater than the diameter size of first sprocket, after first sprocket rotates many circles, the second sprocket just can rotate the round.

(2) The flywheel through setting up rotates and drives first connecting rod motion, and the one end that first connecting rod can stimulate the sieve is done and is reciprocated, and simultaneously, during the first connecting rod motion, the (mixing) shaft rotates, and the (mixing) shaft drives the (mixing) rod and rotates, and the bull stick that is connected with the (mixing) shaft drives the second connecting rod in step and rotates, and then realizes that the other end of second connecting rod pulling sieve is done and reciprocates, and the both ends of sieve are synchronous reciprocates to the sieve realizes the function of screening, and the sieve can directly enter into the inside of frame from the sieve mesh at the in-process material of screening and fall into the inside of feeder hopper. When the tailing is discharged, the rotating plate can be directly opened manually to throw the tailing into the machine base from the feed chute for recycling, and the tailing can be melted and pushed in the machine base first, so that the connection material discharged from the end part of the extrusion mechanism is the last tailing thrown into the feed hopper, and the aim of saving the tailing is fulfilled. The material blocking plate on the material blocking assembly is driven to move through the movement of the arranged moving plate, so that the material blocking plate can block materials, and therefore, when the spiral feeding rod rotates, no materials fall into the machine base when the tailings are output; the sliding plate can drive the movable plate to move, and the guide groove at the bottom of the movable plate can slide on the guide block, so that the movable plate slides in a certain range, and the sliding maximum distance size of the sliding plate is slightly larger than the length size of the striker plate. Through the cooperation of the fixed pin, the rotating sleeve and the torsion spring, when the material blocking plate is extruded by the material, the material blocking plate rotates, and buffering can be realized, so that the material enters the interior of the machine base from a gap between the material blocking plate and the feeding box; when a worker fails or forgets to turn off the motor, the motor continuously drives the sieve plate to screen materials, so that the materials on the material baffle plate are more and more, the material is extruded and does not move the material baffle plate until the materials between the material baffle plate and the sieve plate are stacked to move downwards by the maximum size distance, and under the condition, the feeding mechanism is damaged, the damage of the feeding mechanism is avoided through the cooperation of the fixed pin, the rotating sleeve and the torsion spring, and the service life is prolonged; the material blocking component not only has the function of blocking material discharging, but also has the function of protecting the feeding mechanism, and the elasticity of the torsion spring is larger than the gravity of the material on the material blocking plate. Through the first helical gear that sets up by the third helical gear drive on the actuating mechanism, when first helical gear pivoted, the inside screw rod of first helical gear can realize the removal of screw rod through threaded connection, and when the screw rod moved, the screw rod can drive slide synchronous movement, and then the slide can drive movable plate synchronous movement to realize that the movable plate drives fender material subassembly synchronous movement.

(3) Can cooperate the electric drill rotation of taking the hexagon head bolt through the hexagonal hole that sets up, and then drive the runner and rotate, also can rotate through the crank and drive the runner and rotate, when the runner rotates, the runner drives and changes the rod rotation, and then realize changeing the rod and can drive the action wheel and rotate in step, when needs loosen supporting mechanism, insert the inside of jack with the bolt, make from the driving wheel can rotate along with the action wheel is synchronous, because the bolt is the cuboid structure, can fix action wheel and follow the driving wheel after the bolt inserts the jack, and can not take place relatively to rock between action wheel and the follow driving wheel, after the bolt is inserted, need screw up the cover of screwing up, screw up through threaded connection between cover and the action wheel. The steel wire rope is of a Y-shaped structure, the steel wire rope is pulled by the driven wheel, so that the steel wire rope can move a small distance, and the steel wire rope can be pulled to rotate conveniently through the pulley; and then realize that wire rope pulling support sleeve removes to the support sleeve no longer supports extrusion mechanism, and when wire rope pulling support sleeve removed, the spring compresses, and at this moment, the bracing piece contracts, and the guide bar slides in the inside of bracing piece simultaneously, and at this moment, the support mechanism no longer supports extrusion mechanism, conveniently dismantles outer sleeve and the inner skleeve of different models to extrusion mechanism, and then realizes the function that a aircraft nose can produce multiple model PVC-U tubular product.

(4) When the supporting sleeve on the supporting mechanism leaves the outer wall of the outer sleeve, the outer sleeve is taken down from the guide sleeve by using a tool, and meanwhile, the inner sleeve is taken down from the fixed block, at the moment, the guide sleeve is taken down from the engine base, the tailings are taken down from the guide sleeve, and the tailings are thrown into the feed hopper from the feed chute on the side wall of the feed hopper again; the outer sleeve and the inner sleeve with proper sizes are selected according to actual production requirements, so that the distance between the inner wall of the outer sleeve and the outer wall of the inner sleeve is the wall thickness of an actual production pipeline, the diameter of the outer wall of the inner sleeve is the inner diameter of the production pipeline, and the inner diameter of the outer sleeve is the outer diameter of the actual production pipeline. After the size is selected, the air guide sleeve is installed on the machine base, the inner sleeve and the outer sleeve are installed in sequence, the fixed driving mechanism is loosened after the installation is completed, the material blocking assembly is pulled away from the inside of the feeding box, the driving mechanism is rotated, the driving mechanism drives the steel wire rope to reset, at the moment, the spring is reset, the supporting sleeve is abutted to the outer wall of the outer sleeve, the installation is completed, the motor is opened, and the extrusion molding machine head can normally produce pipes.

Drawings

The invention will be further described with reference to the drawings and examples.

FIG. 1 is a schematic view of the overall structure provided by the present invention;

FIG. 2 is a schematic perspective view of the present invention;

FIG. 3 is a schematic view of the internal structure of the present invention;

FIG. 4 is an enlarged schematic view of the structure of FIG. 3 according to the present invention;

FIG. 5 is an enlarged schematic view of the structure of the present invention at B in FIG. 3;

FIG. 6 is an enlarged schematic view of the structure of FIG. 3 according to the present invention;

FIG. 7 is a schematic view of a material blocking assembly according to the present invention;

FIG. 8 is a schematic view of a connecting rod according to the present invention;

FIG. 9 is a schematic diagram of a driving mechanism connection according to the present invention;

FIG. 10 is a schematic illustration of the connection of the second support and the first helical gear of the present invention;

FIG. 11 is a schematic perspective view of a latch according to the present invention;

in the figure: 1. a transmission mechanism; 11. a motor; 12. a support; 13. a housing; 14. a protective cover; 15. a base; 16. a chain; 17. a screw feed rod; 18. a feed inlet; 19. a first sprocket; 110. a second sprocket; 2. a feed mechanism; 21. a feed box; 22. a stirring shaft; 23. a stirring rod; 24. a sieve pore; 25. a sieve plate; 26. a first link; 27. a flywheel; 28. a first support; 29. a rotating rod; 210. a second link; 211. a feed hopper; 212. a feed chute; 213. a rotating plate; 3. a material limiting mechanism; 31. a moving plate; 32. a stabilizing plate; 33. a slide plate; 34. a support post; 35. a guide block; 36. a guide groove; 37. a material blocking component; 371. a fixing pin; 372. a rotating sleeve; 373. a torsion spring; 374. a striker plate; 38. a chute; 39. a screw; 310. a second support; 311. a first helical gear; 4. a driving mechanism; 41. a drive box; 42. a rotating wheel; 43. a crank; 44. hexagonal holes; 45. a driving wheel; 46. a rotary stick; 47. a jack; 48. driven wheel; 49. a plug pin; 410. tightening the sleeve; 411. a second helical gear; 412. a transmission rod; 413. a third bevel gear; 5. a support mechanism; 51. a pulley; 52. a wire rope; 53. a support rod; 54. a support sleeve; 55. a guide rod; 56. a spring; 6. a casing; 7. a heating ring; 8. an extrusion mechanism; 81. a fixed rod; 82. a nut; 83. a cross brace; 84. a diversion ball; 85. a fixed block; 86. a guide cover; 87. an inner sleeve; 88. an outer sleeve.

Detailed Description

The invention is further described in connection with the following detailed description in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.

As shown in fig. 1-11, the PVC-U pipe extrusion molding machine head with changeable pipe diameter comprises a transmission mechanism 1, wherein a feeding mechanism 2 is connected to the transmission mechanism 1, one side of the feeding mechanism 2 is connected with a driving mechanism 4, the driving mechanism 4 is connected with a supporting mechanism 5, the driving mechanism 4 is positioned on one side of a casing 6, the casing 6 is fixed at one end of the transmission mechanism 1, a material limiting mechanism 3 is connected above the casing 6 in a sliding manner, the material limiting mechanism 3 is connected with the feeding mechanism 2, and the feeding mechanism 2 is in transmission connection with the transmission mechanism 1; the transmission mechanism 1 is connected with an extrusion mechanism 8, the extrusion mechanism 8 is positioned inside the casing 6, and the extrusion mechanism 8 is connected with the supporting mechanism 5. The material can be pushed into the machine seat 15 for heating and melting through the transmission mechanism 1, the material is pushed out of the extrusion mechanism 8 through the transmission mechanism 1, and the extrusion mechanism 8 can be matched with various types to further realize the production of the pipes with different diameters; the supporting mechanism 5 is arranged to stabilize the extruding mechanism 8, so that the extruding mechanism 8 can not incline or crack when extruding the pipe, and the production quality of the pipe is further ensured; the feeding mechanism 2 can control the feeding of materials in the machine base 15, so that the effect of removing materials in the feeding hole 18 is achieved, and the feeding mechanism 2 can be limited by the limiting mechanism 3; the drive mechanism 4 can control not only the material limiting mechanism 3 but also the support of the extrusion mechanism 8 by the support mechanism 5.

Specifically, the transmission mechanism 1 comprises a support 12, one end of the support 12 is fixed with a stand 15, and a heating ring 7 for heating raw materials is arranged in the stand 15; the side wall of the support 12 is fixedly provided with a motor 11, the output end of the motor 11 is connected with a spiral feeding rod 17, and the spiral feeding rod 17 is matched with a feeding hole 18 positioned in the support 12; the surface of the spiral feeding rod 17 is provided with a first chain wheel 19, the first chain wheel 19 is sleeved with a chain 16 matched with the first chain wheel, the chain 16 is sleeved with a second chain wheel 110, the second chain wheel 110 is matched with the first chain wheel 19, and the diameter size of the second chain wheel 110 is larger than that of the first chain wheel 19; the second sprocket 110 is fixed to the flywheel 27 of the feeding mechanism 2. Heating to 90-120 ℃ through the heating ring 7, so that the material forms a molten state and is pushed by the spiral feeding rod 17 until the material is extruded and shaped from the extruding mechanism 8; the motor 11 rotates to drive the spiral feeding rod 17 to rotate, meanwhile, the motor 11 rotates to drive the first sprocket 19 to rotate, when the first sprocket 19 rotates, the first sprocket 19 drives the second sprocket 110 to rotate through the chain 16, and therefore the second sprocket 110 drives the flywheel 27 to rotate, and the flywheel 27 synchronously rotates, and after the first sprocket 19 rotates for a plurality of circles, the second sprocket 110 can rotate for one circle due to the fact that the diameter size of the second sprocket 110 is larger than that of the first sprocket 19.

Specifically, the transmission mechanism 1 further comprises a housing 13 located above the support 12, a protection cover 14 is mounted on the top of the housing 13, and the protection cover 14 is fixed on the side wall of the feeding box 21 of the feeding mechanism 2.

The feeding mechanism 2 comprises a feeding hopper 211 fixed above a support 12 of the transmission mechanism 1, a feeding box 21 is fixed above the feeding hopper 211, a stirring shaft 22 rotating with the feeding box 21 is arranged inside the feeding box 21, a plurality of stirring rods 23 positioned inside the feeding box 21 are arranged on the surface of the stirring shaft 22, two flywheels 27 are arranged at one end of the stirring shaft 22, a first connecting rod 26 is movably connected between the two flywheels 27, a sieve plate 25 is movably connected at the bottom of the first connecting rod 26, and a plurality of sieve holes 24 which are uniformly distributed are arranged on the sieve plate 25; a rotating rod 29 is fixed at one end of the stirring shaft 22 far away from the flywheel 27, and a first support 28 fixed on the feeding box 21 is sleeved on the stirring shaft 22; the rotating rod 29 is rotatably connected with a second connecting rod 210, and the bottom end of the second connecting rod 210 is movably connected with the end part of the sieve plate 25; the sieve plate 25 is in sliding connection with a notch formed on the inner wall of the feeding box 21; a material blocking assembly 37 on the material limiting mechanism 3 is arranged below the screen plate 25. The flywheel 27 through setting up rotates and drives first connecting rod 26 motion, first connecting rod 26 can stimulate the one end of sieve 25 and do the reciprocates, simultaneously, during first connecting rod 26 motion, (mixing) shaft 22 rotates, (mixing) shaft 22 drives puddler 23 and rotates, the bull stick 29 that is connected with (mixing) shaft 22 drives second connecting rod 210 in step and rotates, and then realize that second connecting rod 210 pulls the other end of sieve 25 and do the reciprocate, and the both ends of sieve 25 are synchronous reciprocating, thereby the sieve 25 realizes the function of screening, and the sieve 25 can directly enter into the inside of feeder hopper 211 from sieve mesh 24 and fall into the inside of frame 15 in the in-process material of screening.

The feeding mechanism 2 further comprises a feeding chute 212 arranged on the side wall of the feeding hopper 211, a rotating plate 213 positioned inside the feeding chute 212 is arranged on the feeding hopper 211, and the rotating plate 213 is rotatably connected with the feeding hopper 211. When the tailings are discharged, the rotating plate 213 can be directly and manually opened to throw the tailings into the machine base 15 from the feed chute 212 for recycling, and the tailings can be melted and pushed in the machine base 15, so that the connection materials discharged from the end part of the extrusion mechanism 8 at first are the tailings thrown into the feed hopper 211 last time, and the purpose of saving the tailings is achieved.

The material limiting mechanism 3 comprises a material blocking assembly 37 positioned in the feeding box 21, a movable plate 31 is fixedly connected to the side wall of the material blocking assembly 37, a sliding plate 33 is arranged on the side wall of the movable plate 31, a sliding groove 38 is formed in the sliding plate 33, a guide groove 36 is formed in the lower portion of the sliding plate 33, a guide block 35 matched with the guide groove 36 is arranged in the guide groove 36, a stabilizing plate 32 is fixed to the bottom of the guide block 35, and the stabilizing plate 32 is fixed to the top of the casing 6. The material blocking plate 374 on the material blocking assembly 37 is driven to move by the movement of the arranged moving plate 31, so that the material blocking plate 374 can block materials, and therefore, when the spiral feeding rod 17 rotates, no materials fall into the machine base 15 when the tailings are output; the sliding plate 33 can drive the moving plate 31 to move, and the guide groove 36 at the bottom of the moving plate 31 can slide on the guide block 35, so that the moving plate 31 slides in a certain range, and the maximum sliding distance of the sliding plate 33 is slightly larger than the length of the stop plate 374.

Specifically, the material blocking component 37 comprises a fixing pin 371 fixed on the side wall of the feeding box 21, a rotating sleeve 372 rotationally connected with the fixing pin 371 is sleeved on the fixing pin 371, the side wall of the rotating sleeve 372 is fixed at the end of a material blocking plate 374, the material blocking plate 374 is fixed with the moving plate 31, one end of a torsion spring 373 is fixed in the rotating sleeve 372, a fixing pin 371 is sleeved in the torsion spring 373, and the other end of the torsion spring 373 is fixed on the side wall of the fixing pin 371. Through the cooperation of the fixed pin 371, the rotating sleeve 372 and the torsion spring 373, when the material stop plate 374 is extruded by materials, the material stop plate 374 rotates, and buffering can be realized, so that the materials enter the interior of the machine base 15 from a gap between the material stop plate 374 and the feeding box 21; when a worker fails or forgets to turn off the motor 11, the motor 11 continuously drives the screen plate 25 to screen materials, so that the materials on the material baffle 374 are more and more, the material is extruded and does not move the material baffle 374 until the materials between the material baffle 374 and the screen plate 25 are stacked to the screen plate 25 to move downwards by the maximum size distance, and in this case, the feeding mechanism 2 is damaged, the damage of the feeding mechanism 2 is avoided through the cooperation of the fixed pin 371, the rotating sleeve 372 and the torsion spring 373, and the service life is prolonged; the material blocking assembly 37 not only has the function of blocking material discharging, but also has the function of protecting the feeding mechanism 2, and the elasticity of the torsion spring 373 is larger than the gravity of the material on the material blocking plate 374.

Specifically, the material limiting mechanism 3 further includes a screw rod 39 fixed inside the sliding plate 33, the second support 310 is rotatably connected to the outside of the screw rod 39 through threads, the second support 310 is fixed on the first helical gear 311, the second support 310 is fixed on the inner wall of the supporting post 34, and the screw rod 39 and the second support 310 are matched with the sliding groove 38; a third bevel gear 413 on the driving mechanism 4 is meshed below the first bevel gear 311. Through the first helical gear 311 that sets up by the third helical gear 413 on the actuating mechanism 4 drives, when first helical gear 311 rotates, the inside screw rod 39 of first helical gear 311 can realize the removal of screw rod 39 through threaded connection, and when screw rod 39 moved, screw rod 39 can drive slide 33 synchronous motion, and then slide 33 can drive movable plate 31 synchronous motion to realize that movable plate 31 drives fender material subassembly 37 synchronous motion.

Specifically, the driving mechanism 4 includes a third bevel gear 413 matched with the material limiting mechanism 3, a transmission rod 412 is fixed on a side surface of the third bevel gear 413, a third bevel gear 413 meshed with the second bevel gear 411 is fixed at an end part of the transmission rod 412 far away from the first bevel gear 311, and the transmission rod 412 is connected to an inner wall of a supporting column 34 of the material limiting mechanism 3 through a bearing; the end part of the second bevel gear 411 is fixed at the end part of the rotary rod 46, two driving wheels 45 are fixed on the surface of the rotary rod 46, driven wheels 48 matched with the driving wheels 45 are sleeved on the driving wheels 45, a plurality of insertion holes 47 are formed in the driven wheels 48, a plug pin 49 is installed in the insertion holes 47, a tightening sleeve 410 abutted against the plug pin 49 is arranged at the end part of the plug pin 49, and the tightening sleeve 410 is connected with the driving wheels 45 through threads; one end of the rotary rod 46 is fixed with a rotary wheel 42, a hexagonal hole 44 is formed in a hub protruding outwards from the rotary wheel 42, and a crank 43 is arranged on the hub; the rotary rod 46 is rotatably connected with the driving box 41, the driving box 41 is fixed on the side wall of the casing 6, and the driven wheel 48 is fixed with the end part of the steel wire rope 52 on the supporting mechanism 5. Can cooperate the electric drill rotation of taking the hexagon head bolt through the hexagonal hole 44 that sets up, and then drive runner 42 rotates, also can drive runner 42 through the rotation of crank 43 and rotate, when runner 42 rotates, runner 42 drives and changes the rod 46 and rotate, and then realize changeing rod 46 and can drive the action wheel 45 and rotate in step, when needs loosen supporting mechanism 5, insert the inside of jack 47 with bolt 49, make from the driving wheel 48 can rotate along with action wheel 45 in step, because bolt 49 is the cuboid structure, can fix action wheel 45 and follow driving wheel 48 after bolt 49 inserts jack 47, and can not take place relatively to rock between action wheel 45 and the follow driving wheel 48, after bolt 49 inserts, need screw up cover 410, screw up through threaded connection between cover 410 and the action wheel 45.

Specifically, the supporting mechanism 5 includes a wire rope 52 fixed with the driven wheel 48, the end portion of the wire rope 52 far away from the driven wheel 48 is fixed on a supporting sleeve 54, a guide rod 55 is fixed in the middle of the supporting sleeve 54, a spring 56 is sleeved on the guide rod 55, the spring 56 is located inside a supporting rod 53, the supporting rod 53 is a telescopic rod, the guide rod 55 slides inside the supporting rod 53, the wire rope 52 is located at two sides of the supporting rod 53, the wire rope 52 is slidably mounted with a pulley 51 mounted on the side wall of the casing 6, and the bottom of the supporting sleeve 54 is abutted on the outer wall of an outer sleeve 88 on the extruding mechanism 8. The steel wire rope 52 is of a Y-shaped structure, the steel wire rope 52 is pulled by the driven wheel 48, so that the steel wire rope 52 moves a small distance, and the steel wire rope 52 can be pulled to rotate conveniently through the pulley 51; and then realize that wire rope 52 pulling support sleeve 54 removes to support sleeve 54 no longer supports extrusion mechanism 8, and when wire rope 52 pulling support sleeve 54 removed, spring 56 compressed, and at this moment, bracing piece 53 shrink, guide bar 55 slides in the inside of bracing piece 53 simultaneously, and at this moment, support mechanism 5 no longer supports extrusion mechanism 8, conveniently dismantles extrusion mechanism 8 and change outer sleeve 88 and inner skleeve 87 of different models, and then realizes that a aircraft nose can produce the function of multiple model PVC-U tubular product.

Specifically, the extrusion mechanism 8 includes the outer sleeve 88 with supporting mechanism 5 looks butt, the internally mounted of outer sleeve 88 has the inner sleeve 87 rather than the looks adaptation, outer sleeve 88 passes through threaded connection at the tip of kuppe 86, the inside of kuppe 86 is provided with the guide ball 84, the one end of guide ball 84 is connected with fixed block 85, the inner sleeve 87 passes through threaded connection on fixed block 85, the one end of guide ball 84 is fixed with the spreader 83, the tip of spreader 83 is fixed with the dead lever 81 that is "cross" style of calligraphy structure, kuppe 86, dead lever 81 are all fixed with support 12 through nut 82, the kuppe 86 cooperatees with feed inlet 18 on the drive mechanism 1. When the supporting sleeve 54 on the supporting mechanism 5 leaves the outer wall of the outer sleeve 88, the outer sleeve 88 is removed from the guide sleeve 86 by using a tool, and meanwhile, the inner sleeve 87 is removed from the fixed block 85, at this time, the guide sleeve 86 is removed from the machine base 15, the tailings are removed from the guide sleeve 86, and the tailings are thrown into the feed hopper 211 again from the feed chute 212 on the side wall of the feed hopper 211; the outer sleeve 88 and the inner sleeve 87 with proper sizes are selected according to actual production requirements, so that the distance between the inner wall of the outer sleeve 88 and the outer wall of the inner sleeve 87 is the wall thickness of an actual production pipeline, the diameter of the outer wall of the inner sleeve 87 is the inner diameter of the production pipeline, and the inner diameter of the outer sleeve 88 is the outer diameter of the actual production pipeline. After the size is selected, the air guide sleeve 86 is installed on the machine base 15, the inner sleeve 87 and the outer sleeve 88 are installed in sequence, after the installation is completed, the fixed driving mechanism 4 is loosened, the material blocking assembly 37 is pulled away from the feeding box 21, the driving mechanism 4 is rotated, the driving mechanism 4 drives the steel wire rope 52 to reset, at the moment, the spring 56 resets, the supporting sleeve 54 is abutted to the outer wall of the outer sleeve 88, the installation is completed, the motor 11 is started, and the extrusion molding machine head can normally produce pipes.

When the feeding box is used, firstly, materials are put into the feeding box, the motor and the heating ring are started, and the heating ring is heated in an electromagnetic heating mode, so that the feeding box is in the prior art and is not described in detail; the motor rotates, the motor drives the spiral feeding rod 17 to rotate, and when the spiral feeding rod rotates, the material is pushed to the direction of the extrusion mechanism by the spiral feeding rod; when the motor rotates, the motor 11 rotates to drive the first sprocket 19 to rotate, when the first sprocket 19 rotates, the first sprocket 19 drives the second sprocket 110 to rotate through the chain 16, so that the second sprocket 110 drives the flywheel 27 to rotate, the flywheel 27 synchronously rotates, when the flywheel 27 rotates to drive the first connecting rod 26 to move, the first connecting rod 26 pulls one end of the screen plate 25 to move up and down, meanwhile, when the first connecting rod 26 moves, the stirring shaft 22 rotates, the stirring shaft 22 drives the stirring rod 23 to rotate, the rotating rod 29 connected with the stirring shaft 22 synchronously drives the second connecting rod 210 to rotate, the other end of the screen plate 25 is pulled by the second connecting rod 210 to move up and down, the two ends of the screen plate 25 synchronously move up and down, and the screened material of the screen plate 25 enters the feed inlet 18 in the base 15 from the inside of the feed hopper 211; the material is heated to a molten state by the heating ring 7 in the feed inlet 18, and the material is extruded from the extrusion mechanism by pushing and continuously rotating the spiral feed rod, so that the PVC-U-shaped pipe can be produced. When the pipes with different types are required to be produced, the extrusion mechanisms with different types need to be replaced at the moment; at this time, when the electric drill is used, the crank 43 needs to be detached, the output end of the electric drill drives the hexagonal hole 44, the rotating wheel 42 rotates, or the crank 43 rotates to drive the rotating wheel 42 to rotate, when the rotating wheel 42 rotates, the rotating wheel 42 drives the rotating rod 46 to rotate, the rotating rod 46 can drive the driving wheel 45 to synchronously rotate, at this time, the supporting mechanism 5 needs to be loosened, the bolt 49 is inserted into the jack 47, the driven wheel 48 can synchronously rotate along with the driving wheel 45, after the bolt 49 is inserted into the jack 47, the driving wheel 45 and the driven wheel 48 can be fixed, and relative shaking does not occur between the driving wheel 45 and the driven wheel 48, and after the bolt 49 is inserted, the tightening sleeve 410 is screwed. Meanwhile, when the first bevel gear 311 is driven by the third bevel gear 413 on the driving mechanism 4, the screw 39 inside the first bevel gear 311 can realize the movement of the screw 39 through threaded connection when the first bevel gear 311 rotates, and when the screw 39 moves, the screw 39 can drive the sliding plate 33 to synchronously move, and then the sliding plate 33 can drive the moving plate 31 to synchronously move, so that the moving plate 31 drives the material blocking assembly 37 to synchronously move. Therefore, the material blocking component blocks the bottom of the feeding box, and the feeding prevention function is achieved; when the driven wheel 48 rotates, at this time, the steel wire rope 52 is pulled by the driven wheel 48 to move a small distance, so that the steel wire rope 52 pulls the supporting sleeve 54 to move, and when the steel wire rope 52 pulls the supporting sleeve 54 to move, the spring 56 compresses, at this time, the supporting rod 53 contracts, and the guide rod 55 slides inside the supporting rod 53, at this time, the supporting mechanism 5 no longer supports the extruding mechanism 8. When the supporting sleeve 54 on the supporting mechanism 5 leaves the outer wall of the outer sleeve 88, the outer sleeve 88 is removed from the guide sleeve 86 by using a tool, and meanwhile, the inner sleeve 87 is removed from the fixed block 85, at this time, the guide sleeve 86 is removed from the machine base 15, the tailings are removed from the guide sleeve 86, and the tailings are thrown into the feed hopper 211 again from the feed chute 212 on the side wall of the feed hopper 211; the outer sleeve 88 and the inner sleeve 87 with proper sizes are selected according to actual production requirements, so that the distance between the inner wall of the outer sleeve 88 and the outer wall of the inner sleeve 87 is the wall thickness of an actual production pipeline, the diameter of the outer wall of the inner sleeve 87 is the inner diameter of the production pipeline, and the inner diameter of the outer sleeve 88 is the outer diameter of the actual production pipeline. After the size is selected, the air guide sleeve 86 is installed on the machine base 15, the inner sleeve 87 and the outer sleeve 88 are installed in sequence, after the installation is completed, the fixed driving mechanism 4 is loosened, the material blocking assembly 37 is pulled away from the feeding box 21, the driving mechanism 4 is rotated, the driving mechanism 4 drives the steel wire rope 52 to reset, at the moment, the spring 56 resets, the supporting sleeve 54 is abutted to the outer wall of the outer sleeve 88, the installation is completed, the motor 11 is started, and the extrusion molding machine head can normally produce pipes.

The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the foregoing examples, and that the foregoing description and description are merely illustrative of the principles of this invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a PVC-U pipe extruder head of convertible pipe diameter which characterized in that: the feeding mechanism is characterized by comprising a transmission mechanism (1), wherein the transmission mechanism (1) is connected with a feeding mechanism (2), one side of the feeding mechanism (2) is connected with a driving mechanism (4), the driving mechanism (4) is connected with a supporting mechanism (5), the driving mechanism (4) is positioned on one side of a casing (6), the casing (6) is fixed at one end of the transmission mechanism (1), a limited material mechanism (3) is slidingly connected above the casing (6), the limited material mechanism (3) is connected with the feeding mechanism (2), and the feeding mechanism (2) is in transmission connection with the transmission mechanism (1); the transmission mechanism (1) is connected with an extrusion mechanism (8), the extrusion mechanism (8) is positioned in the casing (6), and the extrusion mechanism (8) is connected with the supporting mechanism (5);

The transmission mechanism (1) comprises a support (12), one end of the support (12) is fixed with a base (15), and a heating ring (7) for heating raw materials is arranged in the base (15); the side wall of the support (12) is fixedly provided with a motor (11), the output end of the motor (11) is connected with a spiral feeding rod (17), and the spiral feeding rod (17) is matched with a feeding hole (18) positioned in the support (12); a first chain wheel (19) is arranged on the surface of the spiral feeding rod (17), a chain (16) matched with the first chain wheel is sleeved on the first chain wheel (19), a second chain wheel (110) is sleeved on the chain (16), the second chain wheel (110) is matched with the first chain wheel (19), and the diameter size of the second chain wheel (110) is larger than that of the first chain wheel (19); the second chain wheel (110) is fixed on a stirring shaft (22) of the feeding mechanism (2);

the driving mechanism (4) comprises a third bevel gear (413) matched with the material limiting mechanism (3), a transmission rod (412) is fixed on the side surface of the third bevel gear (413), a third bevel gear (413) meshed with the second bevel gear (411) is fixed at the end part of the transmission rod (412) far away from the first bevel gear (311), and the transmission rod (412) is connected to the inner wall of a support column (34) of the material limiting mechanism (3) through a bearing; the end part of the second bevel gear (411) is fixed at the end part of the rotary rod (46), two driving wheels (45) are fixed on the surface of the rotary rod (46), driven wheels (48) matched with the driving wheels are sleeved on the driving wheels (45), a plurality of jacks (47) are arranged on the driven wheels (48), a bolt (49) is arranged in the jacks (47), a tightening sleeve (410) abutted to the bolt (49) is arranged at the end part of the bolt (49), and the tightening sleeve (410) is connected with the driving wheels (45) through threads; one end of the rotary rod (46) is fixed with a rotary wheel (42), a hexagonal hole (44) is formed in a hub protruding outwards from the rotary wheel (42), and a crank (43) is arranged on the hub; the rotary rod (46) is rotationally connected with the driving box (41), the driving box (41) is fixed on the side wall of the casing (6), and the end part of a steel wire rope (52) on the supporting mechanism (5) is fixed on the driven wheel (48);

The supporting mechanism (5) comprises a steel wire rope (52) fixed with the driven wheel (48), the end part of the steel wire rope (52) far away from the driven wheel (48) is fixed on a supporting sleeve (54), a guide rod (55) is fixed in the middle of the supporting sleeve (54), a spring (56) is sleeved on the guide rod (55), the spring (56) is positioned in the supporting rod (53), the supporting rod (53) is a telescopic rod, the guide rod (55) slides in the supporting rod (53), the steel wire rope (52) is positioned on two sides of the supporting rod (53), the steel wire rope (52) is slidably mounted with a pulley (51) arranged on the side wall of the casing (6), and the bottom of the supporting sleeve (54) is abutted on the outer wall of an outer sleeve (88) on the extruding mechanism (8).

The extrusion mechanism (8) comprises an outer sleeve (88) which is abutted against the supporting mechanism (5), an inner sleeve (87) which is matched with the outer sleeve (88) is arranged in the outer sleeve (88), the outer sleeve (88) is connected to the end portion of the air guide sleeve (86) through threads, an air guide ball (84) is arranged in the air guide sleeve (86), one end of the air guide ball (84) is connected with a fixed block (85), the inner sleeve (87) is connected to the fixed block (85) through threads, one end of the air guide ball (84) is fixedly provided with a cross rod (83), the end portion of the cross rod (83) is fixedly provided with a fixed rod (81) which is in a cross-shaped structure, the air guide sleeve (86) and the fixed rod (81) are both fixed with the support (12) through nuts (82), and the air guide sleeve (86) is matched with a feed inlet (18) on the transmission mechanism (1).

2. A PVC-U tube extruder head of variable tube diameter as in claim 1 wherein: the transmission mechanism (1) further comprises a shell (13) positioned above the support (12), a protection cover (14) is arranged at the top of the shell (13), and the protection cover (14) is fixed on the side wall of a feeding box (21) of the feeding mechanism (2).

3. A PVC-U tube extruder head of variable tube diameter as in claim 2 wherein: the feeding mechanism (2) comprises a feeding hopper (211) fixed above a support (12) of the transmission mechanism (1), a feeding box (21) is fixed above the feeding hopper (211), a stirring shaft (22) rotating with the feeding box (21) is arranged inside the feeding box (21), a plurality of stirring rods (23) positioned inside the feeding box (21) are arranged on the surface of the stirring shaft (22), two flywheels (27) are arranged at one end of the stirring shaft (22), a first connecting rod (26) is movably connected between the two flywheels (27), a sieve plate (25) is movably connected at the bottom of the first connecting rod (26), and a plurality of sieve holes (24) which are uniformly distributed are formed in the sieve plate (25); a rotating rod (29) is fixed at one end of the stirring shaft (22) far away from the flywheel (27), and a first support (28) fixed on the feeding box (21) is sleeved on the stirring shaft (22); the rotating rod (29) is rotatably connected with a second connecting rod (210), and the bottom end of the second connecting rod (210) is movably connected with the end part of the sieve plate (25); the sieve plate (25) is in sliding connection with a notch formed on the inner wall of the feeding box (21); a material blocking component (37) on the material limiting mechanism (3) is arranged below the sieve plate (25).

4. A PVC-U tube extruder head of variable tube diameter as in claim 3 wherein: the feeding mechanism (2) further comprises a feeding groove (212) formed in the side wall of the feeding hopper (211), a rotating plate (213) located inside the feeding groove (212) is mounted on the feeding hopper (211), and the rotating plate (213) is connected with the feeding hopper (211) in a rotating mode.

5. The variable pipe diameter PVC-U pipe extruder head of claim 4, wherein: the utility model provides a feed limiting mechanism (3) is including being located inside fender material subassembly (37) of feeding case (21), fixedly connected with movable plate (31) on the lateral wall of fender material subassembly (37), be provided with slide (33) on the lateral wall of movable plate (31), the inside of slide (33) is provided with spout (38), guide way (36) have been seted up to the below of slide (33), the inside of guide way (36) is provided with rather than matched with guide block (35), the bottom of guide block (35) is fixed with stabilizer bar (32), stabilizer bar (32) are fixed at the top of cover shell (6).

6. The variable pipe diameter PVC-U pipe extruder head of claim 5, wherein: the utility model discloses a feeding box, including fixing fixed pin (371) on feeding box (21) lateral wall, cover is equipped with on fixed pin (371) rather than rotating and is connected changeing cover (372), the tip at striker plate (374) is fixed to the lateral wall of changeing cover (372), striker plate (374) and movable plate (31) are fixed mutually, the inside of changeing cover (372) is fixed with the one end of torsional spring (373), the inside cover of torsional spring (373) is equipped with fixed pin (371), the other end of fixed torsional spring (373) on the lateral wall of fixed pin (371).

7. The variable pipe diameter PVC-U pipe extruder head of claim 6 wherein: the material limiting mechanism (3) further comprises a screw rod (39) fixed inside the sliding plate (33), a second support (310) is connected to the outside of the screw rod (39) through screw threads in a rotating mode, the second support (310) is fixed on the first helical gear (311), the second support (310) is fixed on the inner wall of the supporting column (34), and the screw rod (39) and the second support (310) are matched with the sliding groove (38); a third bevel gear (413) on the driving mechanism (4) is meshed below the first bevel gear (311).