CN102765178A - Composite plastic pipe forming die - Google Patents
Composite plastic pipe forming die Download PDFInfo
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- CN102765178A CN102765178A CN2012101994157A CN201210199415A CN102765178A CN 102765178 A CN102765178 A CN 102765178A CN 2012101994157 A CN2012101994157 A CN 2012101994157A CN 201210199415 A CN201210199415 A CN 201210199415A CN 102765178 A CN102765178 A CN 102765178A
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Abstract
The present invention relates to the field of plastic forming die, and aims to provide a composite plastic pipe forming die with adjustable uniformity of wall thickness, wherein incompletely plasticized plastic is easy to be plasticized continuously in the die. The composite plastic pipe forming die comprises a die core, at least two cover dies coaxially sleeved on an outer lower part of the die core, an outer die sleeved outside the die core and the cover die, a shunt, a multistage rectification mechanism and a heating device. The outer body side at the lower part of the die core and the outer body side of the cover die are both equipped with one-head or multi-head spiral grooves; the lower end of the die core, the lower end of the die sleeve and the lower end of the outer die are respectively fixedly connected with the upper end of the shunt; the shunt is provided with inlet channels in a number equal to that of the spiral grooves; each inlet channel communicates with the lower end of one spiral groove; and the upper part of the outer body side of the die core and the upper part of the inner body side of the outer die form an outlet passage. The composite plastic pipe forming die has adjustable uniformity of wall thickness, and incompletely plasticized plastic is easy to be plasticized continuously in the die.
Description
Technical field
The present invention relates to the mould for plastics field, plastics easy compound plastic pipe formation die that continues plasticizing in mould of plasticizing fully can be regulated and do not had to especially a kind of wall thickness uniformity of pipe.
Background technology
The disclosure of the Invention of Chinese patent notification number CN 86108107 a kind of equipment and method that composite construction is moulded pipe of making of pushing; This equipment is by whole dispensing head; The extrusion equipment that comprises extrusion die and fuse is formed; Dispensing head is divided into significantly and extrusion equipment and three annulus lines converging together, can hold the material of fusion; The feed of fluid diverter; Fuse is made up of diffusion and condensation type tow conical-tube, all forms a single integral body, and the upstream position of the feed of fluid diverter directly is fixed on the extrusion body, need not additional any fixing branch muscle; The equipment that this extruding manufacturing composite construction is moulded pipe is the multilayer plastic pipe formation die; Present multilayer plastic pipe formation die exists the wall thickness uniformity of pipe can not regulate and not have the plastics of plasticizing fully in mould, to be difficult for continuing the deficiency of plasticizing; Therefore, plastics easy compound plastic pipe formation die that continues plasticizing in mould of plasticizing fully can be regulated and do not had to the wall thickness uniformity that designs a kind of pipe, becomes problem demanding prompt solution.
Summary of the invention
The objective of the invention is to regulate and not have the plastics of plasticizing fully in mould, to be difficult for continuing the deficiency of plasticizing, provide a kind of wall thickness uniformity of pipe can regulate and the plastics that the do not have a plasticizing fully compound plastic pipe formation die that plastifies of continuation easily in mould in order to overcome the wall thickness uniformity that there is pipe in present compound plastic pipe formation die.
Concrete technical scheme of the present invention is:
A kind of compound plastic pipe formation die comprises core, coaxially is enclosed within least two cover dies outside the core rod bottom, is enclosed within core and cover die outer external mold, current divider, is used to make uniform multistage deviation correction mechanism of pipe wall thickness and heater; The outer gusset of described core bottom and the outer gusset of cover die are equipped with the helicla flute of or bull; The lower end of the lower end of described core, the lower end of cover die and external mold is fixedly connected with the upper end of current divider respectively; Described current divider is provided with the inlet channel that number equates with the spiral fluted number, and each inlet channel is communicated with a spiral fluted lower end; Constitute the outlet flow that is communicated with on lower end and the spiral fluted in the top of the outer gusset of described core and the external mold between the top of gusset.When this compound plastic pipe formation die uses, the extrusion connection of the plastic extruder that the other end of the inlet channel that number equates with the spiral fluted number equates with the spiral fluted number with the platform number respectively; The plasticizing plastics that each plastic extruder is extruded flow into each helicla flute through each inlet channel respectively; The plastics that do not have a plasticizing fully upwards flow at a slow speed along helicla flute and prolong heat time heating time and continue plasticizing; The plastics that each layer plastifies fully are at interflow, the lower end of outlet flow, have gone out the pipe that outlet flow has just become the three-layer plastic pipe; Regulate the radial thickness of outlet flow through multistage deviation correction mechanism, make the thickness of pipe of the composite plastic pipe of extruding evenly not eccentric.The wall thickness uniformity of this compound plastic pipe formation die pipe can be regulated and do not had the plastics of plasticizing fully in mould, to continue plasticizing easily.
As preferably, described external mold comprises patrix, middle mould and counterdie; Described multistage deviation correction mechanism comprises the middle step groove of ladder adjustable ring, scala media ladder adjustable ring, the upper end perforation of the last step groove that connects of the upper end of adjustable ring, at least six adjustment screw, small end that middle mould inboard is arranged with and middle mould, small end that the counterdie inboard is arranged with and counterdie down and is arranged in the low groove of step groove downside; The described thickness coupling that goes up the width and the big end of last ladder adjustable ring of the big end of step groove, the diameter of the described upward big end of step groove and the diameter of small end are respectively greater than the external diameter of the big end of last ladder adjustable ring and the external diameter of small end; The described ladder adjustable ring of going up is positioned at step groove; Mould withstood the outer gusset of the big end of ladder adjustable ring during one end of at least two adjustment screw that are uniformly distributed along the circumference passed; Adjustment screw is threaded with middle mould, and the lower end of patrix is fixedly connected with the upper end of last ladder adjustable ring; The thickness coupling of the big end of the width of the big end of step groove and scala media ladder adjustable ring in described, the diameter of the described middle big end of step groove and the diameter of small end are respectively greater than the external diameter of the big end of scala media ladder adjustable ring and the external diameter of small end; Described scala media ladder adjustable ring is arranged in step groove; One end of at least two adjustment screw that are uniformly distributed along the circumference passes the outer gusset that counterdie withstands the big end of scala media ladder adjustable ring; Adjustment screw is threaded with counterdie, and the lower end of middle mould is fixedly connected with the upper end of scala media ladder adjustable ring; The width of described low groove matees with the thickness of following adjustable ring, and the diameter of low groove is greater than the external diameter of following adjustable ring; Described adjustable ring down is positioned at low groove, and an end of at least two adjustment screw that are uniformly distributed along the circumference passes the outer gusset that counterdie withstands down adjustable ring, and adjustment screw is threaded with counterdie; The interior gusset of the top of the interior gusset of the interior gusset of described patrix, middle mould, the interior gusset of counterdie, the interior gusset of going up the ladder adjustable ring, scala media ladder adjustable ring and the interior gusset of following adjustable ring constitute the outer gusset of outlet flow.Through the rotation adjusting screw can regulate ladder adjustable ring, scala media ladder adjustable ring, the radial position of adjustable ring is to the optimum position down, makes the thickness of pipe of the three-layer plastic pipe of extruding evenly not eccentric.Multistage deviation correction mechanism is simple in structure easy to adjust and effect is better.
As preferably, the outer gusset at place, the helicla flute place of described core and cover die be shaped as the taper type that big end is positioned at the lower end.The plastics of the plasticizing streamlined flow that can be respectively makes progress vertically fast fully through the slit between the outer gusset of core bottom and the interior gusset, in the outer gusset of the cover die of internal layer and the slit between the interior gusset at outer field cover die and the slit between the interior gusset of the outer gusset of outer field cover die and counterdie at the cover die of internal layer.
As preferably, described spiral fluted lead angle is that 3 degree are to 6 degree.Take into account the flow velocity and the heating plasticizing time that the plastics that do not plastify fully of the plastics of plasticizing fully.
As preferably, the depth of thread of described helicla flute lower end is greater than the depth of thread of upper end.Flow velocity when increasing the plastics outflow helicla flute upper end that plastifies.
As preferably, the bottom arc transition of described spiral fluted screw thread.Resistance is less.
As preferably, described cover die has two; The spiral fluted head number of the outer gusset of described core bottom and the outer gusset of cover die is four-head or six.Spiral fluted head number is that bull circumferentially is more evenly distributed the plastics edge of plasticizing.
As preferably, the inlet channel of described current divider has three; Described inlet channel comprises sprue and runner; Described runner is communicated with an end of spiral fluted lower end and sprue respectively.Inlet channel is simple in structure.
As preferably, described runner is the arc groove that is positioned at the current divider upper end, and runner also can equate with pairing spiral fluted head number and an end is positioned at the connecting hole on the current divider for number.Make the helicla flute charging even.
As preferably, the electric heater that described heater comprises the center that is positioned at core with curl up the electric heating tube outside the outer gusset of external mold.Simple and practical.
Compared with prior art, the invention has the beneficial effects as follows: one. the wall thickness uniformity of this compound plastic pipe formation die pipe can be regulated and do not had the plastics of plasticizing fully in mould, to continue plasticizing easily.Two. multistage deviation correction mechanism is simple in structure easy to adjust and effect is better.Three. the big end that is shaped as of the outer gusset at place, the helicla flute place of core and cover die makes the plastics of the plasticizing fully streamlined flow that can be respectively makes progress vertically fast through the slit between the outer gusset of core bottom and the interior gusset at the cover die of internal layer, in the outer gusset of the cover die of internal layer and the slit between the interior gusset at outer field cover die and the slit between the interior gusset of the outer gusset of outer field cover die and counterdie at the taper type of lower end.Four. the spiral fluted lead angle be 3 degree to 6 degree, take into account fully plasticizing plastics flow velocity with do not have the heating plasticizing time of the plastics of plasticizing fully.Five. the depth of thread of helicla flute lower end is greater than the depth of thread of upper end, the flow velocity the when plastics that increase plasticizing flow out the helicla flute upper end.Six. the bottom arc transition resistance of spiral fluted screw thread is less.Seven. spiral fluted head number is that bull circumferentially is more evenly distributed the plastics edge of plasticizing.Eight. inlet channel is simple in structure, and runner is the arc groove that is positioned at current divider upper end, and runner also can equate with pairing spiral fluted head number and an end is positioned at the connecting hole on the current divider for number, make the helicla flute charging even.Nine. heater comprises the electric heater at the center that is positioned at core and curls up the electric heating tube outside the outer gusset of external mold, and is simple and practical.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the vertical view of current divider among Fig. 1.
Among the figure: electric heater-1, electric heating tube-2, core-3, cover die-4, external mold-5, patrix-51, middle mould-52, counterdie-53, go up step groove-54, middle step groove-55, low groove-56, current divider-6, helicla flute-7, go up ladder adjustable ring-8, scala media ladder adjustable ring-9, adjustable ring-10, adjustment screw-11, outlet flow-12, sprue-13, runner-14 down.
The specific embodiment
Below in conjunction with shown in the accompanying drawing the present invention is described further.
Shown in accompanying drawing 1, accompanying drawing 2: a kind of compound plastic pipe formation die comprises core 3, coaxially is enclosed within least two cover dies 4 outside the core rod bottom, is enclosed within core 3 and cover die 4 outer external mold 5, current divider 6, is used to make uniform multistage deviation correction mechanism of pipe wall thickness and heater.
The lower end of the lower end of the lower end of described core 3, cover die 4 and external mold 5 is connected with the upper end screw of current divider 6 respectively.
Described heater comprises the electric heater 1 at the center that is positioned at core 3 and curls up the electric heating tube 2 outside the outer gusset of external mold 5.
The outer gusset of described core 3 bottoms and the outer gusset of cover die 4 all have the helicla flute 7 of or bull; The lead angle of described helicla flute 7 is that 3 degree are to 6 degree; In the present embodiment, described cover die 4 has two; A number of the helicla flute 7 of the outer gusset of described core 3 bottoms is a four-head, and the number of helicla flute 7 of outer gusset that is positioned at the cover die 4 of internal layer is six, and a number of helicla flute 7 that is positioned at the outer gusset of outer field cover die 4 is a four-head; The lead angle of the helicla flute 7 of the outer gusset of described core 3 bottoms and the helicla flute 7 of the outer gusset that is positioned at outer field cover die 4 is 5 degree, and the lead angle of helicla flute 7 that is positioned at the outer gusset of outer field cover die 4 is 4 degree; The outer gusset at the place, helicla flute 7 places of described core 3 and cover die 4 be shaped as the taper type that big end is positioned at the lower end; The depth of thread of described helicla flute 7 lower ends is greater than the depth of thread of upper end; The bottom arc transition of the screw thread of described helicla flute 7; Described helicla flute 7 is consistent in the degree of depth of sustained height.
Described external mold 5 comprises patrix 51, middle mould 52 and counterdie 53; Described multistage deviation correction mechanism comprise last step groove 54 that the upper end of ladder adjustable ring 8, scala media ladder adjustable ring 9, gussets have in 10,15 adjustment screw 11 of adjustable ring, the middle mould 52 down small end and middle mould 52 connects, small end that counterdie 53 interior gussets have and counterdie 53 the upper end perforation middle step groove 55 and be arranged in the low groove 56 of step groove 55 downsides; The described thickness interference fits that go up step groove 54 big width of holding and last ladder adjustable ring 8 big ends, the described diameter of going up step groove 54 big diameters of holding and small end is respectively greater than the external diameters of last ladder adjustable ring 8 big ends and the external diameter of small end; The described ladder adjustable ring 8 of going up is positioned at step groove 54; Mould 52 withstood the outer gusset of ladder adjustable ring 8 big ends during one end of five adjustment screw that are uniformly distributed along the circumference 11 passed; Adjustment screw 11 is threaded with middle mould 52, and the lower end of patrix 51 is connected with the upper end screw of last ladder adjustable ring 8; The thickness interference fits of the terraced adjustable ring 9 big ends of width that step groove 55 is held greatly in described and scala media, the diameters that described middle step groove 55 is held greatly and the diameter of small end are respectively greater than the scala media ladder adjustable ring 9 big external diameters of holding and the external diameter of small end; Described scala media ladder adjustable ring 9 is arranged in step groove 55; One end of five adjustment screw that are uniformly distributed along the circumference 11 passes the outer gusset that counterdie 53 withstands scala media ladder adjustable ring 9 big ends; Adjustment screw 11 is threaded with counterdie 53, and the lower end of middle mould 52 is connected with the upper end screw of scala media ladder adjustable ring 9; The thickness interference fits of the width of described low groove 56 and following adjustable ring 10, the diameter of low groove 56 is greater than the external diameter of following adjustable ring 10; The end that described adjustable ring 10 down is positioned at 56, five adjustment screw that are uniformly distributed along the circumference 11 of low groove passes the outer gusset that counterdie 53 withstands down adjustable ring 10, and adjustment screw 11 is threaded with counterdie 53; Constitute the outlet flow 12 that the lower end is communicated with the upper end of helicla flute 7 in the top of described core 3 outer gussets and the external mold 5 between the top of gussets; The interior gusset of the top of the interior gusset of the interior gusset of described patrix 51, the interior gusset of middle mould 52, counterdie 53, the interior gusset of going up ladder adjustable ring 8, scala media ladder adjustable ring 9 and the interior gusset of following adjustable ring 10 constitute the outer gusset of outlet flow 12.
Described current divider 6 has the inlet channel that number equates with the number of helicla flute 7, and each inlet channel is communicated with the lower end of a helicla flute 7; In the present embodiment, the inlet channel of described current divider 6 has three; Described inlet channel comprises sprue 13 and runner 14; Described runner 14 is communicated with the lower end of helicla flute 7 and an end of sprue 13 respectively; Described runner is the arc groove that is positioned at current divider upper end, and runner also can equate with pairing spiral fluted head number and an end is positioned at the connecting hole on the current divider for number; The runner 14 that is communicated with helicla flute of the outer gusset that is positioned at core 3 bottoms 7 and the helicla flute 7 that is positioned at the outer gusset of outer field cover die 4 is for being positioned at the arc groove of current divider 6 upper ends, and equate with a number of pairing helicla flute 7 for number with the runner 14 of helicla flute 7 connections of the outer gusset that is positioned at outer field cover die 4 six and an end are positioned at the connecting hole of current divider 6 upper ends.
When this compound plastic pipe formation die used, the other end of three sprues 13 was communicated with the extrusion of three plastic extruders respectively; The plasticizing plastics that three plastic extruders are extruded are respectively through three helicla flutes 7 of three sprues 13 and 14 inflows of three runners; Fully the plastics of plasticizing respectively through the slit between the outer gusset of core 3 bottoms and the interior gusset at the cover die 4 of internal layer, in the outer gusset of the cover die 4 of internal layer and the slit between the interior gusset at outer field cover die 4 and the slit between the interior gusset of the outer gusset of outer field cover die 4 and counterdie 53 fast vertically straight line make progress mobile; The plastics that do not have a plasticizing fully then upwards flow at a slow speed along helicla flute 7 and prolong heat time heating time and continue plasticizing; Three layers fully the plastics of plasticizing gone out the pipe that outlet flow 12 has just become the three-layer plastic pipe at interflow, the lower end of outlet flow 12; Through rotation adjusting screw 11 can regulate ladder adjustable ring, scala media ladder adjustable ring 9, the radial position of adjustable ring 10 is to the optimum position down, makes the thickness of pipe of the three-layer plastic pipe of extruding evenly not eccentric.
The invention has the beneficial effects as follows: the wall thickness uniformity of this compound plastic pipe formation die pipe can be regulated and do not had the plastics of plasticizing fully in mould, to continue plasticizing easily.Multistage deviation correction mechanism is simple in structure easy to adjust and effect is better.The big end that is shaped as of the outer gusset at place, the helicla flute place of core and cover die makes the plastics of the plasticizing fully streamlined flow that can be respectively makes progress vertically fast through the slit between the outer gusset of core bottom and the interior gusset at the cover die of internal layer, in the outer gusset of the cover die of internal layer and the slit between the interior gusset at outer field cover die and the slit between the interior gusset of the outer gusset of outer field cover die and counterdie at the taper type of lower end.The spiral fluted lead angle is 4 degree or 5 degree, takes into account the flow velocity of the plastics that plastify fully and does not have the heating plasticizing time of the plastics of plasticizing fully.The depth of thread of helicla flute lower end is greater than the depth of thread of upper end, the flow velocity the when plastics that increase plasticizing flow out the helicla flute upper end.The bottom arc transition resistance of spiral fluted screw thread is less.Spiral fluted head number is that bull circumferentially is more evenly distributed the plastics edge of plasticizing.Inlet channel is simple in structure, and runner is the arc groove that is positioned at current divider upper end, and runner also can equate with pairing spiral fluted head number and an end is positioned at the connecting hole on the current divider for number, make the helicla flute charging even.Heater comprises the electric heater at the center that is positioned at core and curls up the electric heating tube outside the outer gusset of external mold, and is simple and practical.
It is apparent to one skilled in the art that the present invention can change into multiple mode, and such change is not thought and departed from the scope of the present invention.The conspicuous modification of the technical staff to said field that all are such is within the scope that is included in this claim.
Claims (10)
1. a compound plastic pipe formation die is characterized in that, comprises core, coaxially is enclosed within least two cover dies outside the core rod bottom, is enclosed within core and cover die outer external mold, current divider, is used to make uniform multistage deviation correction mechanism of pipe wall thickness and heater; The outer gusset of described core bottom and the outer gusset of cover die are equipped with the helicla flute of or bull; The lower end of the lower end of described core, the lower end of cover die and external mold is fixedly connected with the upper end of current divider respectively; Described current divider is provided with the inlet channel that number equates with the spiral fluted number, and each inlet channel is communicated with a spiral fluted lower end; Constitute the outlet flow that is communicated with on lower end and the spiral fluted in the top of the outer gusset of described core and the external mold between the top of gusset.
2. compound plastic pipe formation die according to claim 1 is characterized in that: described external mold comprises patrix, middle mould and counterdie; Described multistage deviation correction mechanism comprises the middle step groove of ladder adjustable ring, scala media ladder adjustable ring, the upper end perforation of the last step groove that connects of the upper end of adjustable ring, at least six adjustment screw, small end that middle mould inboard is arranged with and middle mould, small end that the counterdie inboard is arranged with and counterdie down and is arranged in the low groove of step groove downside; The described thickness coupling that goes up the width and the big end of last ladder adjustable ring of the big end of step groove, the diameter of the described upward big end of step groove and the diameter of small end are respectively greater than the external diameter of the big end of last ladder adjustable ring and the external diameter of small end; The described ladder adjustable ring of going up is positioned at step groove; Mould withstood the outer gusset of the big end of ladder adjustable ring during one end of at least two adjustment screw that are uniformly distributed along the circumference passed; Adjustment screw is threaded with middle mould, and the lower end of patrix is fixedly connected with the upper end of last ladder adjustable ring; The thickness coupling of the big end of the width of the big end of step groove and scala media ladder adjustable ring in described, the diameter of the described middle big end of step groove and the diameter of small end are respectively greater than the external diameter of the big end of scala media ladder adjustable ring and the external diameter of small end; Described scala media ladder adjustable ring is arranged in step groove; One end of at least two adjustment screw that are uniformly distributed along the circumference passes the outer gusset that counterdie withstands the big end of scala media ladder adjustable ring; Adjustment screw is threaded with counterdie, and the lower end of middle mould is fixedly connected with the upper end of scala media ladder adjustable ring; The width of described low groove matees with the thickness of following adjustable ring, and the diameter of low groove is greater than the external diameter of following adjustable ring; Described adjustable ring down is positioned at low groove, and an end of at least two adjustment screw that are uniformly distributed along the circumference passes the outer gusset that counterdie withstands down adjustable ring, and adjustment screw is threaded with counterdie; The interior gusset of the top of the interior gusset of the interior gusset of described patrix, middle mould, the interior gusset of counterdie, the interior gusset of going up the ladder adjustable ring, scala media ladder adjustable ring and the interior gusset of following adjustable ring constitute the outer gusset of outlet flow.
3. compound plastic pipe formation die according to claim 1 and 2 is characterized in that: the outer gusset at place, the helicla flute place of described core and cover die be shaped as the taper type that big end is positioned at the lower end.
4. compound plastic pipe formation die according to claim 1 and 2 is characterized in that: described spiral fluted lead angle is that 3 degree are to 6 degree.
5. compound plastic pipe formation die according to claim 1 and 2 is characterized in that: the depth of thread of described helicla flute lower end is greater than the depth of thread of upper end.
6. compound plastic pipe formation die according to claim 1 and 2 is characterized in that: the bottom arc transition of described spiral fluted screw thread.
7. compound plastic pipe formation die according to claim 1 and 2 is characterized in that: described cover die has two; The spiral fluted head number of the outer gusset of described core bottom and the outer gusset of cover die is four-head or six.
8. compound plastic pipe formation die according to claim 6 is characterized in that: the inlet channel of described current divider has three; Described inlet channel comprises sprue and runner; Described runner is communicated with an end of spiral fluted lower end and sprue respectively.
9. inlet channel according to claim 7 is characterized in that: described runner is the arc groove that is positioned at current divider upper end, and runner also can equate with pairing spiral fluted head number and an end is positioned at the connecting hole on the current divider for number.
10. compound plastic pipe formation die according to claim 1 and 2 is characterized in that: described heater comprises the electric heater at the center that is positioned at core and curls up the electric heating tube outside the outer gusset of external mold.
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| CN201210199415.7A CN102765178B (en) | 2012-06-13 | 2012-06-13 | Composite plastic pipe forming die |
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|---|---|---|---|
| CN201210199415.7A CN102765178B (en) | 2012-06-13 | 2012-06-13 | Composite plastic pipe forming die |
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| CN102765178B CN102765178B (en) | 2014-11-05 |
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| CN104552873A (en) * | 2015-01-07 | 2015-04-29 | 佛山市日丰企业有限公司 | Co-extruding mold of plastic composite pipe with foamed outer layer |
| CN106584880A (en) * | 2017-01-22 | 2017-04-26 | 江苏科技大学 | Biaxially oriented molding device for polyvinyl chloride pipe |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104552873A (en) * | 2015-01-07 | 2015-04-29 | 佛山市日丰企业有限公司 | Co-extruding mold of plastic composite pipe with foamed outer layer |
| CN106584880A (en) * | 2017-01-22 | 2017-04-26 | 江苏科技大学 | Biaxially oriented molding device for polyvinyl chloride pipe |
| CN106584880B (en) * | 2017-01-22 | 2019-01-18 | 江苏科技大学 | A kind of biaxial orientation molding machine of polyvinyl chloride pipe |
| CN107351359A (en) * | 2017-07-17 | 2017-11-17 | 苏州金纬管道科技有限公司 | Guide's distributor for plastic extruder |
| CN109910262A (en) * | 2019-04-11 | 2019-06-21 | 四川川东电缆有限责任公司 | A kind of three-layer co-extruding machine head of double-colored four points of insulated cables |
| CN109910262B (en) * | 2019-04-11 | 2024-01-30 | 四川川东电缆有限责任公司 | Three-layer co-extrusion machine head of bicolor quarter insulated cable |
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|---|---|
| CN102765178B (en) | 2014-11-05 |
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Address after: Hangzhou City, Zhejiang province 311100 Linping Yuhang Economic Development Zone No. 111 Tian He Lu Patentee after: Zhejiang two woods machinery limited company Address before: Hangzhou City, Zhejiang province 311100 Linping Yuhang Economic Development Zone No. 111 Tian He Lu Patentee before: Zhejiang Shuanglin Plastic Machinery Co., Ltd. |
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