CN104400984B - Vertical extruder for PTFE pipe - Google Patents
Vertical extruder for PTFE pipe Download PDFInfo
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- CN104400984B CN104400984B CN201410766154.1A CN201410766154A CN104400984B CN 104400984 B CN104400984 B CN 104400984B CN 201410766154 A CN201410766154 A CN 201410766154A CN 104400984 B CN104400984 B CN 104400984B
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- mold
- external mold
- pressing mold
- periphery
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Classifications
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- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/285—Feeding the extrusion material to the extruder
- B29C48/288—Feeding the extrusion material to the extruder in solid form, e.g. powder or granules
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/475—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using pistons, accumulators or press rams
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/86—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the nozzle zone
- B29C48/865—Heating
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/86—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the nozzle zone
- B29C48/87—Cooling
-
- 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
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The technology provides a vertical extruder for PTFE pipes. The vertical extruder integrates feeding, extrusion and hot forming, and has high production efficiency. The vertical extruder comprises an external mold and a core mold which are fixed on a frame, wherein center holes are formed in the external mold and the core mold; the core mold passes through the center hole of the external mold, and a mold cavity is formed between the center hole of the core mold and the center hole of the external mold; the mold cavity comprises an extrusion section in an upper section and a forming section in a lower section; an induction heater for heating the external mold is arranged on the outer circumference of the external mold in the forming section part; a press mold arranged on the outer circumference of the core mold in a sliding manner is arranged above the mold cavity and connected with a main driving device which drives the press mold to slide along the core mold up and down and get into and out of the extrusion section; a retainer ring is arranged on the outer circumference of an upper end surface of the external mold, and a stock bin for containing materials is formed between the upper end surface of the external mold and the inner circumference of the retainer ring; a scraping plate is arranged at the bottom in the stock bin; the scraping plate is driven by a scraping driving device to rotate around an axis of the core mold so as to feed materials in the stock bin into the mold cavity.
Description
Technical field
This technology is related to the PTFE tube material vertical extruder that tubing is prepared into after PTFE powder pressurized, heateds.
Background technology
Suspension injecting tetrafluoroethylene（PTFE）Belong to existing product, it is entirely fluorine that the product has each hydrogen atom of polyethylene
The chemical constitution replaced by atom is molecular weight up to 200 ten thousand to 1,000 ten thousand high polymer long chain structure.Due in fluorocarbon polymer
Fluorine atom have very strong chemical binding force, so comparing with other similar plastics, have more superior heat resistance and resistance to chemical reagents.
In molecule, contained fluorine atom is more, and this property is more notable.
Generally required its compression molding using suspension injecting tetrafluoroethylene.Compression molding is called compression molding, compression molding
It is to add the metal die for maintaining uniform temperature to plastify which powdery or granular resin, and under the effect of the pressure full of whole
Individual die cavity, the then pressurized demoulding obtain final product prefabrication.Prefabrication is placed in sintering furnace, and heat-agglomerating obtains final product product.It is compression molded into
Type configuration press, mould and sintering furnace can be produced, but production efficiency is not high, only applicable small lot batch manufacture.
Technology contents
The purpose of this technology is to provide a kind of feeding, extruding, hot briquetting formation one, production efficiency high PTFE tube
Material vertical extruder.
The PTFE tube material vertical extruder of this technology, it includes the external mold 11, core for being provided with centre bore being fixed in frame
Mould 12；Core is passed through from the centre bore of external mold, and die cavity 13 is formed between core and external mold centre bore；Die cavity includes squeezing for epimere
The profiled section 132 of pressure section 131 and hypomere；The sensing heated to external mold after arranging on the external mold periphery of profiled section part adds
Hot device 14；The pressing mold 15 for being slidably arranged in core periphery is provided with above die cavity, pressing mold is with drive pressing mold up and down along core
The main drive 16 for sliding and passing in and out extruded segment is connected, and external mold upper surface periphery arranges back-up ring 129, external mold upper surface and back-up ring
Formed between inner circumferential for accommodating the feed bin 17 of material；Bottom in feed bin is provided with material scraping plate 18；Material scraping plate is driven in scraper
Rotate around core axis under the drive of device 19 and the material in feed bin is sent into die cavity.
The beneficial effect of this technology：During use, PTFE powders are put in feed bin, drive material scraping plate by scraper driving means
Rotation, powder enter die cavity in, then main drive drive pressing mold move down, material in die cavity is pushed；Pressing mold to
After the minimum point of lower movement, then move upwardly off die cavity, the material scraping plate for then rotating is scraped powder into die cavity again, pressing mold again to
Lower movement, so repeatedly, is extruded rear material and gradually enters into profiled section from extruded segment, after profiled section is heated to form molten state
Gradually lower the temperature again, then molding, complete the preparation of tubing from profiled section out.The rotation of material scraping plate, moreover it is possible to ensure in feed bin
Material in the circumferential direction centered on core axis, material thickness is basically identical, so as to ensure into the thing in die cavity
Material uniformity in circumferential direction.The collection feeding of this equipment, extruding, hot briquetting form one, production efficiency height.
Above-mentioned PTFE tube material vertical extruder, the structure that material scraping plate is connected with scraper driving means 19 is：In back-up ring
Periphery arranges the gear wheel 110 being arranged in frame rotated around mandrel axis, and the little gear 111 engaged with gear wheel is arranged on
On the output shaft of scraper driving means；Material scraping plate 18 by from above back-up ring across connecting plate 112 be connected with gear wheel.
Above-mentioned PTFE tube material vertical extruder, the high conical surface 113 of low centered on the bottom of feed bin, periphery.So, powder
From being easily accessible centrally located die cavity.
Above-mentioned PTFE tube material vertical extruder, the structure that pressing mold is connected with main drive 16 is：In frame at least
Arrange two guide pillars 114 parallel with mandrel, sleiding form 115 slide setting guide pillar on, sleiding form at the same with main driving
Device is connected with pressing mold.The guide pillar is oriented to by slip to sleiding form 115 is set, it is ensured that pressing mold is moved along core axis
It is dynamic.
Above-mentioned PTFE tube material vertical extruder, the top and the bottom of sleiding form 115 have respectively be arranged on it is upper on guide pillar
Template 116 and lower template 117；Main drive is master cylinder, and the Master cylinder body 161 of master cylinder is arranged on upper die plate；Master cylinder
Main piston rod 162 be connected with sleiding form 115；Core is upward through hollow main piston rod and is connected with Master cylinder body；External mold
It is connected in lower template.Sleiding form 115, upper die plate 116 and lower template 117 are co-located on column, be easily guaranteed that external mold,
The axiality of core rod, while using master cylinder as main drive, pressure is big, core rod passes through hollow main piston rod, whole machine knot
Structure is simple.
Above-mentioned PTFE tube material vertical extruder, the structure that external mold is connected in lower template is：It is provided with lower template
The lower flange 118 of endoporus is provided with, be connected in endoporus positioning sleeve 120；External mold upper end is connected with flange 119 by screw thread pair；
Flange 119 is connected with the lower surface of lower flange；120 lower end of positioning sleeve and the groove fit for being opened in external mold upper surface；On positioning sleeve
It is provided with the axis hole equal with center hole size；Mandrel forms cavity 133 through the axis hole on positioning sleeve and with axis hole；It is described
Cavity is docked with extruded segment 131.This structure, positioning sleeve can regard a part for external mold as, and cavity 133 can also regard crowded as
A part for pressure section.Radial positioning is carried out to external mold by positioning sleeve, at the same positioning sleeve be connected with lower flange inner hole into
Row radial positioning, is more prone to ensure the axiality of external mold and core.
Above-mentioned PTFE tube material vertical extruder, the structure that sleiding form is connected with pressing mold is：Pressing mold is fixed on tie-plate
On 126, tie-plate 126 is positioned and is coupled with positioning disk in radial fit with positioning disk 127, and positioning disk 127 is in radial direction and slip
Template is coordinated positioning and is coupled with sleiding form.The structure that the structure is positioned to pressing mold, is easily guaranteed that the coaxial of pressing mold and core
Degree.
Above-mentioned PTFE tube material vertical extruder, positioning set upper side protrusion and lower flange, are arranged in positioning sleeve upper periphery
Cooler pan 121, the periphery of cooler pan fix the back-up ring；Between the upper surface of cooler pan, the upper surface of positioning sleeve, back-up ring inner circumferential
Form the feed bin 17；There is in cooler pan the cooling chamber 1211 for passing to cooling water, cooling chamber respectively with water inlet pipe 1212, water outlet
Pipe 1213 is communicated；The upper surface of the lower end of cooler pan 121 and lower flange；Positioned at lower flange periphery in lower template following table
Refrigerating seat 122 is connected with face, the water cavity 1221 for passing to cooling water in refrigerating seat, is provided with.As in extruded segment, material is squeezed pressure
Contracting, the temperature of extruded segment are higher, carry out cooling down to positioning sleeve using the cooler pan for passing to cooling water, it is ensured that positioning sleeve
Reliably working.Meanwhile, cooler pan and back-up ring, positioning sleeve collectively constitute feed bin, and structure is simpler.Cooler pan also can be under
Flange is cooled down.
Above-mentioned PTFE tube material vertical extruder, axis hole are fillet with the joint of the upper surface of positioning sleeve.Fillet is caused
Material slides more easily into die cavity.
Above-mentioned PTFE tube material vertical extruder, the auxiliary piston of the auxiliary oil cylinder that core is moved in axis direction with drive core
Bar is connected；The subsidiary cylinder of auxiliary oil cylinder is arranged on Master cylinder body, and core is connected through main piston rod with auxiliary piston bar.
Powder is entered in die cavity, and then master cylinder drives sleiding form, pressing mold etc. to move down from initial position, die cavity
Interior material is pushed；While pressing mold is moved down, auxiliary oil cylinder drives core to move up from original position；Pressing mold is moved down
During to minimum point, core moves to peak, keeps the state for a period of time；Master cylinder drives pressing mold to move upwardly off mould again
Chamber returns to initial position, and auxiliary oil cylinder drives core to move down and returns to original position；The material scraping plate of rotation is scraped powder into mould again
Chamber, pressing mold are moved down into minimum point from initial position again, and core is moved upwards up to peak from original position again, then keeps one
After the section time, pressing mold moves back up to initial position again, and core moves back to original position still further below；So repeatedly, enter
The die cavity material after being extruded gradually enters into profiled section from extruded segment, gradually drops after profiled section is heated to form molten state again
Temperature, then molding, complete the preparation of tubing from profiled section out.This structure, not only compact conformation.Importantly,
While pressing mold is moved down, core is moved up, and pressing mold applies downward active force to material, and core applies upwards to material
Active force, it is ensured that the material in die cavity is reliably extruded.Then minimum point is located in pressing mold, core is protected when being located at peak
A period of time is held, material is extruded substantially（Molding）Molding；Then pressing mold is moved up again, core is moved still further below, substantially not
Can be right（Molding）The material of molding is impacted.
Above-mentioned PTFE tube material vertical extruder, is provided with the cooling for passing to cooling water on the external mold corresponding with extruded segment
Chamber 1211, cooling chamber are communicated with water inlet pipe 1212, outlet pipe 1213 respectively.As in extruded segment, material is squeezed compression, extruding
The temperature of section is higher, carries out cooling down to external mold using the cooler pan for passing to cooling water, it is ensured that corresponding with extruded segment
Exterior mold portion reliably working.
Above-mentioned PTFE tube material vertical extruder, is provided with cooling duct 21 in core vertically, and cooling duct is from core
Upper end is extended downward in the core corresponding with extruded segment；One cooling water inlet pipe 22 is extend in cooling duct and cooling duct
Bottom communicate, cooling water outlet tube 23 is communicated with the top of cooling duct.The temperature of extruded segment is higher, adopts and passes to cooling water
The cooling duct pair core part corresponding with extruded segment carry out cooling down, it is ensured that the reliably working with core.
Above-mentioned PTFE tube material vertical extruder, it includes material being sprayed into the material-spraying device in feed bin, the material spray dress
Put including sleeve 31, nozzle 32, material spray driving means 33；Sleeve one end is communicated with the nozzle stretched in feed bin, inside the other end
There is piston 34；Piston is connected with its material spray driving means for moving back and forth is driven；It is provided with and barrel bore phase on sleeve wall top
Logical material inlet.Due to passing through material inlet into the certain of the amount of the material in sleeve, so piston is once back and forth moved
Dynamic, the amount for sending into the material in feed bin is also certain, which achieves automatic gauge feeding.
Above-mentioned PTFE tube material vertical extruder, it also includes the pay-off for material being sent into material inlet；It is described to send
Material device includes a broach hopper 41, the stirring rotated under the drive of mixer drive on broach hopper axis
Axle 42, arranges stirring vane 43 on shaft；The outlet of broach hopper connects material inlet；The upper end of broach hopper is provided with material and enters
Mouthful.So, the automatization of feeding is just further realized by pay-off.
Description of the drawings
Fig. 1 is the axonometric chart of PTFE tube material vertical extruder.
Fig. 2 is the sectional view of PTFE tube material vertical extruder.
Fig. 3 is the relative annexation schematic diagram such as base, upper die plate, lower template, master cylinder, pay-off.
Fig. 4 is the relative annexation schematic diagram such as upper die plate, master cylinder, auxiliary oil cylinder, sleiding form, pay-off.
Fig. 5 is the relative annexation schematic diagram such as lower template, core, external mold, base.
Fig. 6 is the relative annexation schematic diagram such as base, upper die plate, lower template, core, external mold, positioning sleeve（Omit canine tooth
Wheel, lower gear, material scraping plate etc.）.
Fig. 7 is the axonometric chart of gear wheel, lower gear, material scraping plate, back-up ring etc..
Fig. 8 is the relative annexation schematic diagram of gear wheel, lower gear, material scraping plate, back-up ring, cooler pan etc..
Fig. 9 is the top view of Fig. 8.
Figure 10 is the B-B sectional views of Fig. 8.
Figure 11 is the schematic diagram of pay-off.
Figure 12 is the annexation schematic diagram such as sleeve, nozzle, piston.
Figure 13 is the relative annexation schematic diagram of core and cooling duct, cooling water inlet pipe, cooling water outlet tube etc..
In figure, base is filled with mold frame components 1, core chiller 2, metering material-spraying device 3, pay-off 4, transmission stirring
Put 5；
External mold 11, core 12（Including upper core 1201, connection plug 1202, lower core 1203）, die cavity 13（Including cavity
133rd, extruded segment 131, profiled section 132）；Sensing heater 14, pressing mold 15, main drive（Master cylinder body）16th, Master cylinder body 161,
Main piston rod 162, feed bin 17, material scraping plate 18.Scraper servomotor 19, gear wheel 110, annular table terrace 1101, little gear
111st, connecting plate 112, the conical surface 113, guide pillar 114, sleiding form 115, upper die plate 116, lower template 117, lower flange 118, flange
119th, positioning sleeve 120, fillet 12001, positioning sleeve upper surface 12002, cooler pan 121, cooling chamber 1211, water inlet pipe 1212, go out
Water pipe 1213 is communicated, refrigerating seat 122, water cavity 1221, base 123, little axle 124, bearing 125, tie-plate 126, positioning disk 127,
Screw thread flange 128, back-up ring 129, auxiliary oil cylinder（Core drive mechanism）6th, subsidiary cylinder 61, auxiliary piston bar 62；
212, cooling water inlet pipe 22, cooling water outlet tube 23 at the top of cooling duct 21, cooling duct bottom 211, cooling duct；
Sleeve 31, nozzle 32, cylinder（Material spray driving means）33rd, piston 34, material inlet 35；
Broach hopper 41, shaft 42, stirring vane 43, stirring motor（Mixer drive）44th, inlet pipe 45, hopper goes out
Mouth 46.
Specific embodiment
PTFE tube material vertical extruder shown in Figure 1, it includes base with mold frame components 1, core chiller 2, meter
Amount material-spraying device 3, pay-off 4, transmission stirring device 5.
Base includes base 123, the lower template being arranged on base with mold frame components 1（Equivalent to frame）117th, guide pillar
114th, sleiding form 115, upper die plate 116, the external mold 11 for being provided with centre bore, core 12（Including upper core 1201, connection plug
1202nd, lower core 1203）, master cylinder（Main drive）16th, auxiliary oil cylinder（Core drive mechanism）6 etc..
Core is passed through from the centre bore of external mold, and die cavity 13 is formed between core and external mold centre bore；Die cavity includes epimere
Extruded segment 131 and hypomere profiled section 132；Sense external mold heated after arranging on the external mold periphery of profiled section part
Answer heater 14.The lower flange 118 for being provided with endoporus is provided with lower template, be connected in endoporus positioning sleeve 120；On external mold
End is connected with flange 119 by screw thread pair；Flange 119 is connected with the lower surface of lower flange；120 lower end of positioning sleeve be opened in external mold
The groove fit of upper surface；The axis hole equal with center hole size is provided with positioning sleeve；Axis hole and positioning sleeve upper surface 12002
Joint is fillet 12001.Mandrel forms cavity 133 through the axis hole on positioning sleeve and with axis hole；The cavity 133 with
Extruded segment 131 is docked.Certainly, positioning sleeve can regard a part for external mold as, and cavity 133 can also regard of extruded segment as
Point.
Four guide pillars 114 parallel with mandrel are set in lower template, on the setting guide pillar that sleiding form 115 slides.Lead
Post upper end arranges upper die plate 116.The pressing mold 15 for being slidably arranged in core periphery is provided with above die cavity, pressing mold is fixed on connection
On disk 126, tie-plate 126 is positioned and is coupled with positioning disk in radial fit with positioning disk 127, and positioning disk 127 is in radial direction and cunning
Moving platen is coordinated positioning and is coupled with sleiding form lower end.Sleiding form, pressing mold etc. is driven to slide along core up and down and pass in and out
The main drive 16 of extruded segment is master cylinder, and the Master cylinder body 161 of master cylinder is arranged on upper die plate top；The main piston of master cylinder
The lower end of bar 162 is connected with screw thread flange 128, and screw thread flange 128 is connected with 115 upper end of sleiding form.Core is upward through master
Piston rod and be connected with Master cylinder body.
The subsidiary cylinder 61 of auxiliary oil cylinder 6 is fixed on Master cylinder body 161, core upper end pair with auxiliary oil cylinder through main piston rod
Piston rod 62 is connected.6 action of auxiliary oil cylinder, drives core to move in axis direction.
Positioning set upper side protrusion and lower flange, arrange cooler pan 121, the lower end of cooler pan 121 in positioning sleeve upper periphery
The upper surface of face and lower flange.There is in cooler pan the cooling chamber 1211 for passing to cooling water, cooling chamber respectively with water inlet pipe
1212nd, outlet pipe 1213 is communicated.The peripheral upper portion of cooler pan fixes back-up ring 129；The upper surface of cooler pan, the upper surface of positioning sleeve
12002nd, the feed bin 17 is formed between 129 inner circumferential of back-up ring；The high conical surface 113 of low, periphery centered on the bottom of feed bin.
Transmission stirring device 5 mainly includes scraper servomotor 19, little gear 111, gear wheel 110, material scraping plate 18.Canine tooth
Wheel 110 is coaxial with mandrel, in lower template is circumferentially evenly equipped with three little axles 124 along gear wheel, and bearing 125 is arranged on little axle.Greatly
110 periphery bottom of gear is provided with annular table terrace 1101, and the top surface of step surface and side are connect with the top surface of bearing and side respectively
Touch, so that gear wheel 110 can be rotated around mandrel axis.Scraper servomotor (scraper driving means) 19 is fixed on mould
On plate, the little gear 111 engaged with gear wheel is arranged on the output shaft of scraper servomotor 19；Material scraping plate 18 is located at feed bin bottom
Portion, and by from above back-up ring across connecting plate 112 be connected with gear wheel.Material scraping plate is under the drive of scraper servomotor 19
Rotate around core axis and the material in feed bin is sent into die cavity.
Refrigerating seat 122 is connected with lower template lower surface positioned at lower flange periphery, be provided with refrigerating seat pass to it is cold
But the water cavity 1221 of water.
Core chiller 2 mainly includes cooling duct 21, cooling water inlet pipe 22 and cooling water outlet tube 23.The edge in the core
Cooling duct 21 is provided with axially, cooling duct is from the core that core upper end extends downward corresponding with extruded segment；One cooling
Water inlet pipe 22 is extend in cooling duct and is communicated with cooling duct bottom 211,212 phases at the top of cooling water outlet tube 23 and cooling duct
It is logical.
The metering material-spraying device 3 material sprayed in feed bin mainly includes sleeve 31, nozzle 32, cylinder（Material spray drives dress
Put）33；The sleeve one end being fixed in frame is communicated with the nozzle stretched in feed bin, has piston 34 inside the other end；Piston with
Drive the cylinders which moves back and forth；The material inlet 35 communicated with barrel bore is provided with sleeve wall top.
The pay-off 4 that material is sent into material inlet is main including a broach hopper 41, positioned at broach hopper axis
On in stirring motor（Mixer drive）The shaft 42 rotated under 44 drive, arranges stirring vane 43 on shaft；
The hopper outlet 46 of broach hopper bottom connects material inlet 35；The upper end of broach hopper is connected with the inlet pipe 45 of input material.
During use, PTFE powder Jing material inlets enter material bin, and agitated axle is stirred to up to hopper bottom positioned at set
Material inlet on cylinder, moves through cylinder band piston, and a certain amount of material is entered in feed bin from Jing nozzles, is watched by scraper
Taking motor Jing little gears, gear wheel drives material scraping plate to rotate, and powder is entered in die cavity, and then master cylinder drives sleiding form, pressure
Mould etc. is moved down from initial position, and material in die cavity is pushed；While pressing mold is moved down, auxiliary oil cylinder drive core from
Original position is moved up；When pressing mold is moved down into minimum point, core moves to peak, keeps the state for a period of time；
Master cylinder drives pressing mold to move upwardly off die cavity again and returns to initial position, and auxiliary oil cylinder drives core to move down and returns to start bit
Put；The material scraping plate of rotation is scraped powder into die cavity again, and pressing mold is moved down into minimum point from initial position again, and core is again from starting
Position is moved upwards up to peak, then after being kept for a period of time, pressing mold moves back up to initial position again, and core is moved still further below
It is dynamic to return to original position；So repeatedly, the material into die cavity and after being extruded gradually enters into profiled section from extruded segment, into
Type section is gradually lowered the temperature after being heated to form molten state again, then molding, completes the preparation of tubing from profiled section out.Cooling is situated between
Matter（Such as cooling water）Cooling chamber 1211, water cavity 1221, cooling duct 21 are each led into positioning sleeve, lower flange, lower template, core
Etc. being cooled down.The collection feeding of this equipment, extruding, hot briquetting form one, production efficiency height.
Claims (5)
1.PTFE tubing vertical extruders, is characterized in that：It includes the external mold for being provided with centre bore being fixed in frame（11）, core
Mould（12）；Core is passed through from the centre bore of external mold, forms die cavity between core and external mold centre bore（13）；Die cavity includes epimere
Extruded segment（131）With the profiled section (132) of hypomere；External mold is heated after arranging on the external mold periphery of profiled section part
Sensing heater（14）；There is the pressing mold (15) for being slidably arranged in core periphery above die cavity, pressing mold is upper and lower with drive pressing mold
The main drive (16) for sliding along core and passing in and out extruded segment is connected, and external mold upper surface periphery arranges back-up ring (129), external mold
Formed between upper surface and back-up ring inner circumferential for accommodating the feed bin (17) of material；Bottom in feed bin is provided with material scraping plate (18)；
Material scraping plate is in scraper driving means（19）Drive under around core axis rotate and in feed bin material send into die cavity；
The structure that pressing mold is connected with main drive (16) is：At least provided with two guide pillars parallel with mandrel in frame
(114), on the setting guide pillar that, sleiding form (115) slides, sleiding form is connected with main drive and pressing mold simultaneously；
There is the upper die plate (116) and lower template (117) being arranged on guide pillar in the top and the bottom of sleiding form (115) respectively；Main drive
Dynamic device is master cylinder, and the Master cylinder body (161) of master cylinder is arranged on upper die plate；The main piston rod (162) of master cylinder and slip
Template (115) is connected；Core is connected with the auxiliary piston bar of the auxiliary oil cylinder for driving core to move in axis direction；The secondary cylinder of auxiliary oil cylinder
Body is arranged on Master cylinder body, and core is connected through main piston rod with auxiliary piston bar；External mold is connected in lower template；
The structure that sleiding form is connected with pressing mold is：Pressing mold is fixed on tie-plate (126), tie-plate (126) and positioning disk
(127) position and couple with positioning disk in radial fit, positioning disk (127) coordinates positioning simultaneously with sleiding form (115) in radial direction
Couple with sleiding form (115)；
The structure that external mold is connected in lower template is：The lower flange (118) for being provided with endoporus is provided with lower template, is matched somebody with somebody in endoporus
Close connecting positioning sleeve (120)；External mold upper end is connected with flange (119) by screw thread pair；The lower surface of flange (119) and lower flange
It is connected；Positioning sleeve (120) lower end and the groove fit for being opened in external mold upper surface；It is provided with positioning sleeve equal with center hole size
Axis hole；Mandrel forms cavity (133) through the axis hole on positioning sleeve and with axis hole；The cavity is right with extruded segment (131)
Connect.
2. PTFE tube material vertical extruder as claimed in claim 1, is characterized in that：Material scraping plate and scraper driving means（19）Phase
Structure even is：The gear wheel being arranged in frame rotated around mandrel axis is set in the periphery of back-up ring（110）, with gear wheel
The little gear of engagement（111）It is arranged on the output shaft of scraper driving means；Material scraping plate（18）By from above back-up ring across
Connecting plate（112）It is connected with gear wheel.
3. PTFE tube material vertical extruder as claimed in claim 1, is characterized in that：Positioning set upper side protrusion and lower flange,
Positioning sleeve upper periphery arranges cooler pan (121), and the periphery of cooler pan fixes the back-up ring；The upper surface of cooler pan, positioning sleeve
Upper surface, form the feed bin (17) between back-up ring inner circumferential；There is in cooler pan the cooling chamber (1211) for passing to cooling water, it is cold
But chamber is communicated with water inlet pipe (1212), outlet pipe (1213) respectively；The lower end of cooler pan (121) is connect with the upper surface of lower flange
Touch；Refrigerating seat (122) is being connected with lower template lower surface positioned at lower flange periphery, be provided with and pass to cooling water in refrigerating seat
Water cavity (1221).
4. PTFE tube material vertical extruder as claimed in claim 1, is characterized in that：Open on the external mold corresponding with extruded segment
There is the cooling chamber (1211) for passing to cooling water, cooling chamber is communicated with water inlet pipe (1212), outlet pipe (1213) respectively.
5. PTFE tube material vertical extruder as claimed in claim 1, is characterized in that：Cooling duct is provided with vertically in core
（21）, cooling duct is from the core that core upper end extends downward corresponding with extruded segment；One cooling water inlet pipe (22) is stretched into
Communicate with the bottom of cooling duct in cooling duct, cooling water outlet tube (23) is communicated with the top of cooling duct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410766154.1A CN104400984B (en) | 2014-12-12 | 2014-12-12 | Vertical extruder for PTFE pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410766154.1A CN104400984B (en) | 2014-12-12 | 2014-12-12 | Vertical extruder for PTFE pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104400984A CN104400984A (en) | 2015-03-11 |
| CN104400984B true CN104400984B (en) | 2017-05-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410766154.1A Active CN104400984B (en) | 2014-12-12 | 2014-12-12 | Vertical extruder for PTFE pipe |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106738984B (en) * | 2016-12-20 | 2020-08-18 | 广州至简通用设备制造有限公司 | Continuous hot-pressing plasticizing pipe making machine |
| CN110091486A (en) * | 2019-06-03 | 2019-08-06 | 浙江松华新材股份有限公司 | A kind of processing method that induction heating squeezes out polytetrafluoroethylsteel steel bar |
| WO2021207921A1 (en) * | 2020-04-14 | 2021-10-21 | 广州至简通用设备制造有限公司 | Tube-forming machine employing continuous hot-press and plasticization techniques |
| CN114953544B (en) * | 2022-05-26 | 2024-03-08 | 山东中鲁管业有限公司 | Wear-resistant high-molecular pipe production process and device |
| CN115366311A (en) * | 2022-07-26 | 2022-11-22 | 南京肯特复合材料股份有限公司 | Suspended material sheet extrusion method |
| CN115122553A (en) * | 2022-07-26 | 2022-09-30 | 南京肯特复合材料股份有限公司 | PTFE suspension material thin plate extrusion method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2242779Y (en) * | 1995-05-30 | 1996-12-18 | 阜新市红旗塑料机械厂 | Vertical plastic thrust machine |
| CN201432397Y (en) * | 2009-06-04 | 2010-03-31 | 杨根源 | Teflon rod material pushing and pressing machine |
| CN202965139U (en) * | 2012-11-27 | 2013-06-05 | 中山富茂密封科技有限公司 | Machine head and work table of polytetrafluoroethylene pipe rod extruder |
| CN204398295U (en) * | 2014-12-12 | 2015-06-17 | 南京肯特复合材料有限公司 | PTFE tube material vertical extruder |
| CN204398296U (en) * | 2014-12-12 | 2015-06-17 | 南京肯特复合材料有限公司 | Vertical extruder |
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Address after: 211162 Jiangsu, Jiangning District, Binjiang Development Zone, No., Copper Road, No. 18 Co-patentee after: NANJING JIAFA MACHINERY CO., LTD. Patentee after: Nanjing Kent composites Limited by Share Ltd Co-patentee after: Nanjing CompTECH New Material Co., Ltd. Address before: 211162 Nanjing City, Jiangning Province town, the town of copper, Copper Road, No. 18 Co-patentee before: NANJING JIAFA MACHINERY CO., LTD. Patentee before: Nanjing Kente Composite Material Co., Ltd. Co-patentee before: Nanjing CompTECH New Material Co., Ltd. |
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Effective date of registration: 20170705 Address after: 211162 Jiangsu, Jiangning District, Binjiang Development Zone, No., Copper Road, No. 18 Co-patentee after: Nanjing CompTECH New Material Co., Ltd. Patentee after: Nanjing Kent composites Limited by Share Ltd Address before: 211162 Jiangsu, Jiangning District, Binjiang Development Zone, No., Copper Road, No. 18 Co-patentee before: NANJING JIAFA MACHINERY CO., LTD. Patentee before: Nanjing Kent composites Limited by Share Ltd Co-patentee before: Nanjing CompTECH New Material Co., Ltd. |
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