CN202088428U - Adjustment-free extruding machine head - Google Patents

Adjustment-free extruding machine head Download PDF

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Publication number
CN202088428U
CN202088428U CN201120207299XU CN201120207299U CN202088428U CN 202088428 U CN202088428 U CN 202088428U CN 201120207299X U CN201120207299X U CN 201120207299XU CN 201120207299 U CN201120207299 U CN 201120207299U CN 202088428 U CN202088428 U CN 202088428U
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CN
China
Prior art keywords
external mold
core
extruder head
free type
type extruder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CN201120207299XU
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Chinese (zh)
Inventor
龙玉克
王永军
宋大春
周和平
康树峰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Woer Heat Shrinkable Material Co Ltd
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Shenzhen Woer Heat Shrinkable Material Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen Woer Heat Shrinkable Material Co Ltd filed Critical Shenzhen Woer Heat Shrinkable Material Co Ltd
Priority to CN201120207299XU priority Critical patent/CN202088428U/en
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Publication of CN202088428U publication Critical patent/CN202088428U/en
Anticipated expiration legal-status Critical
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Abstract

The utility model provides an adjustment-free extruding machine head comprising a core mold, an external mold, a connecting part, a shunt body and a connector, wherein the external mold is provided with a cavity in which the core mold is arranged; a molten material flow passage is formed between the core mold and the external mold; and a forming groove is formed at the tail end of the molten material flow passage; the core mold and the external mold are connected in to a whole through the connecting part that is arranged in the molten material flow passage and provided with a plurality of through grooves; and the shunt body is fixedly connected with the core mold or the external mold and is provided with a spreader. In the adjustment-free extruding machine head, as the external mold and the core mold are connected through the connecting part and are integrally formed, and the relative positions of the external mold and the core mold are fixed, so that compared with the prior art that an external mold and a core mold are independent from each other, the adjustment-free extruding machine head has the advantages that the distance between the external mold and the core mold are not needed to be adjusted, the step for adjusting the deviated wall of an extruded product is saved, and further the phenomena of raw material waste, manual labor consumption and time cost consumption can be avoided, so as to save the product extrusion cost and improve the extrusion efficiency.

Description

The regulation free type extruder head
Technical field
The utility model relates to a kind of extruder head of extruder, relates in particular to a kind of regulation free type extruder head.
Background technology
The extruder head of pipe extruders such as the traditional hot draw comprises external mold and core.External mold roughly is tubular, about the barrel of external mold, left and right sides four direction offers a screwed hole respectively, is provided with adjustment screw in the screwed hole.Core is located in the cavity of external mold.Because external mold, core rod are independently parts, core rod can not guarantee to be in the central axis place of external mold after assembling was finished, it is eccentric that extruding pipe is occurred, this can cause the product of extruding the phenomenon of inclined to one side wall to occur, make adjustment screw replace core rod so need adjust four adjustment screw when extruding, and then the position of change core rod make core rod be in the central axis place of external mold.Some product is difficult especially to be transferred, and for example thermoplastic plastic pipe just exists the inclined to one side wall debug difficulties of size, control problem of unstable in extruding production process.
Yet above-mentioned method by the inclined to one side wall of adjustment screw adjusting product needs continuous debugging just can finish, and needs sometimes to regulate repeatedly, and particularly thermoplastic plastic pipe is extruded and is difficult for especially adjusting.What extrude in tuningout wall process is inclined to one side wall product, has caused defective work, has not only wasted raw material, and has increased manpower and time cost, has reduced production efficiency.
Therefore, press for a kind of regulation free type extruder head and solve the problems referred to above.
The utility model content
Thereby the purpose of this utility model is to provide a kind of regulation free type extruder head that need not debug distance saving manpower, time and the cost of material between core rod and the external mold and can improve extrusion efficiency.
For achieving the above object; the utility model provides a kind of regulation free type extruder head; comprise core, external mold, connecting portion, branch fluid and connector; described external mold has cavity; described core is located in this cavity; be formed with between described core and the external mold and melt the materials flow road; this melts materials flow road end and is formed with forming tank; described core, external mold are connected to form one by connecting portion; described connecting portion is located at described melting in the materials flow road; this connecting portion has some grooves that run through, and fluid was fixedlyed connected with described core or external mold in described minute, and fluid had the branch flow cone in described minute.
Further, described core has core body and the integrally formed inwall forming part of this core body.
Further, described external mold has an external mold body and a mouthful mould, and this mouthful mould is integrally formed with this outer mould body, and this mouthful mould is outside the inwall forming part of described core.Certainly, a mouthful mould also can be fixedlyed connected with outer mould body.
Further, fluid had the shunting frame in described minute, and this shunting frame middle part has protruded out described shunting awl, and this shunting frame has some shuntings chamber, and this shunting chamber is communicated with the groove that runs through of described connecting portion.
Further, described connector has the body of connection and tube portion, and this connects body fixedlys connected with described shunting frame, and the branch flow cone of described minute fluid is located in the tube chamber of this one.
Further, the mouth mould inwall end of described external mold is provided with holddown groove, be provided with ring spacer in this holddown groove, and fix this ring spacer with sealing cap, this sealing cap has the cover plate and the stationary magazine creel that is extended to form by this cover plate of perforate, this sealing cap is fixed on the described mouthful of mould by this stationary magazine creel, and this sealing cap passes through fixedly ring spacer of this cover plate butt.
Further, described ring spacer has some specifications, and the external diameter of this ring spacer is identical and internal diameter is different.
Further, described ring spacer is the tetrafluoro packing ring.
Further, be provided with annular shim in the described sealing cap, this annular shim contacts with described ring spacer.
Further, be provided with fixed ring piece in the holddown groove of described external mold, this fixed ring piece is placed on the described ring spacer, and described mouthful of mould offers some screws, is fixed with adjustment screw in this screw.
Further, described external mold is provided with the external mold fixing hole, fluid was provided with branch fluid fixing hole in described minute, described connector is provided with the connector fixing hole, by screw insert this external mold fixing hole, this minute the fluid fixing hole and this connector fixing hole described external mold, described minute fluid and described connector are fixed together.
Further, described core is provided with through hole, and fluid was provided with blowhole in described minute, and this blowhole is communicated with this through hole, and at this moment, the utility model regulation free type extruder head can be used for the extrusion molding of tubing such as heat-shrink tube.
For achieving the above object, the utility model provides another kind of regulation free type extruder head, comprise core, external mold, described external mold has cavity and melts the material inlet, and described core is provided with through hole, described core is located in this cavity, be formed with between described core and the external mold and melt the materials flow road, this melts materials flow road end and is formed with forming tank, and this melts the materials flow road and is communicated with the described material inlet that melts, described core, external mold are connected to form one by connecting portion, and described connecting portion is located at described melting in the materials flow road.At this moment, the utility model regulation free type extruder head can be used for extruding of electric wire external insulation or sheath, and the conductor part of electric wire passes the through hole of core.
As mentioned above, the utility model regulation free type extruder head comprises external mold, core, because external mold, core are connected by connecting portion and are one-body molded, relative position between external mold, the core is fixing, with external mold, core mutually independently prior art compare, need not adjust the distance between external mold and the core, that is save the step of extruded product being carried out the tuningout wall, and then can avoid because of the tuningout wall wastes raw material, the phenomenon of labor intensive and time cost, thereby can save product and extrude cost, improve extrusion efficiency.
Description of drawings
Fig. 1 is the cross-sectional view of the utility model regulation free type extruder head first embodiment.
Fig. 2 is the cross-sectional view of the utility model regulation free type extruder head second embodiment.
Each description of reference numerals is as follows among the figure:
External mold 10/10 ' cavity 11/11 '
Outer mould body 12/12 ' mouth mould 13/13 '
Holddown groove 131 external mold fixing holes 14/14 '
External mold pin hole 15 melt material inlet 16 '
Core 20/20 ' core body 21
Inwall forming part 22 through holes 23/23 '
Melt materials flow road 24/24 ' forming tank 241/241 '
Connecting portion 30/30 ' run through groove 31
Divide fluid 40 shunting framves 41
Blowhole 411 splitter boxs 412
Divide the fluid fixing hole 413 fens flow cones 42
Connector 50 connects body 51
511 portions 52 of connector fixing hole
Screw 61 pins 62
Ring spacer 71 sealing caps 72
Cover plate 721 stationary magazine creels 722
Perforate 723 annular shims 73
The specific embodiment
By describing technology contents of the present utility model, structural feature in detail, realized purpose and effect, give explanation below in conjunction with embodiment and conjunction with figs. are detailed.
See also Fig. 1, the utility model regulation free type extruder head comprises external mold 10, core 20, connecting portion 30, divides fluid 40 and connector 50.For ease of explanation, before stipulating in this manual to extrude the direction of advancing and be with product.
External mold 10 roughly is tubular, has cavity 11.External mold 10 has an outer mould body 12 and a mouthful mould 13, and outer mould body 12 and mouth mould 13 are parts independently mutually.Offer the external mold fixing hole 14 and the external mold pin hole 15 that pass outer mould body 12 and mouthful mould 13 on the external mold 10.Certainly, mouthful mould 13 can be integrally formed with outer mould body 12.
Core 20 roughly is the pole shape, has core body 21 and inwall forming part 22.The diameter of core body 21 is greater than inwall forming part 22, and the diameter of core body 21 is tapered towards the direction of inwall forming part 22.22 one-tenth of inwall forming parts are directly bar-shaped, and this inwall forming part 22 is integrally formed with this core body 21.Core 20 central axis places offer a through hole 23.
Core 20 is located in the cavity 11 of external mold 10, and mouthful mould 13 is formed with between core 20 and the external mold 10 and melts materials flow road 24 outside the inwall forming part 22 of core 20, and this melts materials flow road 24 ends and is formed with forming tank 241, the product of extruding moulding in this forming tank 241.Core 20, external mold 10 are connected to form one by connecting portion 30, and connecting portion 30 has some grooves 31 that run through, and connecting portion 30 is located at and is melted in the materials flow road 24.In the present embodiment, to be core body 21 rear ends vertically outwards protrude out formation perpendicular to the axial direction of core body 21 to connecting portion 30, the end of connecting portion 30 is connected with the rear end of external mold 10 inwalls, thereby by connecting portion 30 core 20 and external mold 10 is connected in one.Connecting portion 30 offers 4 and runs through groove 31, and these run through groove 31 cuts apart the formation cross with connecting portion 30.Certainly, the number that runs through groove and connecting portion can be set as required, for example 2,3,5,6,7,8 etc.
Divide fluid 40 to have shunting frame 41 and branch flow cone 42.Shunting frame 41 is discoideus, and the peripheral region of shunting frame 41 inwardly offers a blowhole 411, and blowhole 411 is communicated with the through hole 23 of core 20.The middle part of shunting frame 41 offers some splitter boxs 412.Splitter box 412 is communicated with the groove 31 that runs through of connecting portion 30.In the present embodiment, shunting frame 41 offers 4 splitter boxs 412, and each splitter box 412 is communicated with the groove 31 that runs through of connecting portion 30.The number of splitter box 412 is consistent with the number that runs through groove 31 of connecting portion 30.Also offer branch fluid fixing hole 413 on the shunting frame 41.Dividing flow cone 42 to be protruded out by shunting frame 41 middle parts forms.
Connector 50 has body of connection 51 and tube portion 52.Connect body 51 and fixedly connected, offer connector fixing hole 511 on the connection body 51 with shunting frame 41.
The utility model regulation free type extruder head is when assembling, penetrate the external mold fixing hole 14 of external mold 10, the branch fluid fixing hole 413 that divides fluid 40 and the connector fixing hole 511 of connector 50 by screw 61, thereby external mold 10, branch fluid 40 are fixed together with connector 50.Go into the external mold pin hole 15 of outer mould body 12 and mouthful mould 13 by pin 62 lining, can increase fastness and stability that outer mould body 12 and mouth mould 13 are fixed.Wherein, divide in the chamber of the tube portion 52 that the branch flow cone 42 of fluid 40 is located at connector 50, the groove 31 that runs through of the tube chamber of the tube portion 52 of connector 50, the splitter box 412 that divides fluid 40, connecting portion 30 is communicated with successively with the materials flow road 24 that melts between external mold 10, the core 20, and formation is melted the passage of expecting Extrusion Flow.Divide the blowhole 411 of fluid 40 to be communicated with, constitute the gas channel of inflation with the through hole 23 of core 20.
The utility model regulation free type extruder head is when using, the melting raw material enter from extruder connector 50 tube portion 52 the tube chamber in, the melting raw material enters in the splitter box 412 of shunting frame 41 after branch flow cone 42 shuntings of minute fluid 40, run through groove 31 by connecting portion 30, enter the melting in the materials flow road 24 of external mold 10 and core 20, in forming tank 241 places moulding.Because external mold 10, core 20 are connected by connecting portion 30 and are one-body molded, relative position between external mold 10, the core 20 is fixing, with external mold, core mutually independently prior art compare, need not adjust the distance between external mold and the core, that is save the step of extruded product being carried out the tuningout wall, and then can avoid extruding cost because of the tuningout wall wastes raw material, the phenomenon of labor intensive and time cost thereby can save product, improve extrusion efficiency.
When extruding the product of different size, can realize extruding of products of different specifications by the mouth mould 13 of replacing different size (internal diameter of cavity 11 varies in size), compared with prior art, need not replace whole external mold, so need not adjust core 20, can save manpower, time and cost of material, improve extrusion efficiency.
The utility model also further comprises the ring spacer 71 and the sealing cap 72 of some specifications.Ring spacer 71 has some specifications, the identical and internal diameter difference of the external diameter of the ring spacer 71 of different size, with the holddown groove 131 supporting installations of mouth mould 13.The stationary magazine creel 722 that sealing cap 72 has cover plate 721 and extends to a side from cover plate 721 peripheries, stationary magazine creel 722 inwalls are provided with internal thread.Offer perforate 723 on the cover plate 721.
Mouth mould 13 outer wall ends are provided with external screw thread, and mouthful mould 13 inwall ends offer holddown groove 131, are provided with ring spacer 71 in the holddown groove 131.The internal thread of the stationary magazine creel 722 of sealing cap 72 is fixed in sealing cap 72 on mouthful mould 13 with the external screw thread sealing cap 72 supporting installations of mouthful mould 13, and sealing cap 72 passes through fixedly ring spacer 71 of cover plate 721 butts, and extruded product is gone out from the perforate 723 of sealing cap 72.This kind structure can make ring spacer 71 be firmly fixed in the holddown groove of mouthful mould 13, can prolong the service life of ring spacer 71, and the ring spacer of prior art is located at the extruding that is subjected to mouthful mould and calibration sleeve between mouthful mould and the calibration sleeve respectively, because a mouthful mould causes the ring spacer deformed damaged with the different meetings of extruding force of calibration sleeve, service life is shorter.Sealing cap 72 also can adopt other modes with mouthful fixedlying connected of mould 13, for example the two is fixed together by screw by perforate on mouth mould 13 and sealing cap 72.
Ring spacer 71 is that a kind of fine and closely woven material is made, and can improve and improve the apparent smoothness of extruded product, thereby save the structure of the calibration sleeve of prior art, avoids the extruded velocity that causes because of calibration sleeve slack-off, improves extrusion efficiency.
Ring spacer 71 preferred tetrafluoro packing rings, tetrafluoro packing ring can make the apparent better of extruded product.
Also can further be provided with annular shim 73 in the sealing cap 72, this annular shim 73 and ring spacer 71 butts.
Also can further be provided with the fixed ring piece (not shown) in the holddown groove 131 of external mold 10, this fixed ring piece is placed on the ring spacer 71, mouth mould 13 offers some screws, be fixed with the adjustment screw (not shown) in this screw, can be pressed on by adjustment screw and make ring spacer 71 fixing on the fixed ring piece.
When extruding the product of different size, can select the ring spacer 71 of different size to realize extruding of products of different specifications, for example extruding Φ 70, during the heat-shrink tube of Φ 80 or Φ 90, can be under the situation of replacement port mould 13 not, adopt and change Φ 70, the ring spacer 71 of Φ 80 or Φ 90 is realized, certainly, the external diameter of these ring spacers 71 is identical and internal diameter is different, thereby only replace ring spacer 71 and can finish extruding of different size heat-shrink tube, avoid when extruding the different size heat-shrink tube, changing a mouthful mould, also without the tuningout wall, thereby save manpower, time and cost of material are enhanced productivity.
See also Fig. 2, it has disclosed second embodiment of the utility model regulation free type extruder head, comprise external mold 10 ', core 20 ', external mold 10 ' have cavity 11 ' and melt material and go into 16 ', core 20 ' be provided with through hole 23 ', core 20 ' be located at cavity 11 ' in, core 20 ' and external mold 10 ' between be formed with melt materials flow road 24 ', melt materials flow road 24 ' end be formed with forming tank 241 ', melt materials flow road 24 ' with melt material inlet 16 ' be communicated with, core 20 ', external mold 10 ' by connecting portion 30 ' be connected to form one, connecting portion 30 ' be located at melt materials flow road 24 ' in.
The outer mould body 12 of external mold 10 ' have ' with a mouthful mould 13 ', outer mould body 12 ' with a mouthful mould 13 ' be parts independently mutually, certain, outer mould body 12 ' with a mouth mould 13 ' also can be integrally formed.External mold 10 ' on offer pass outer mould body 12 ' with a mouthful mould 13 ' external mold fixing hole 14 ', by screw penetrate external mold fixing hole 14 ' interior with outer mould body 12 ' with a mouth mould 13 ' be fixed together.
At this moment, the utility model regulation free type extruder head is used for extruding of electric wire external insulation or sheath, the through hole 23 of core 20 ' and be the cable tray of wire conductor part.
In sum, the utility model regulation free type extruder head comprise external mold 10/10 ', core 20/20 ', because external mold 10/10 ', core 20/20 ' by connecting portion 30/30 ' connection and one-body molded, external mold 10/10 ', core 20/20 ' between relative position fixing, with external mold, core phase independently prior art is compared, need not adjust the distance between external mold and the core, that is save the step of extruded product being carried out the tuningout wall, and then can avoid wasting raw material because of the tuningout wall, the phenomenon of labor intensive and time cost, thereby can save product and extrude cost, improve extrusion efficiency.
The utility model is not limited to the above-mentioned specific embodiment, those skilled in the art that also can make multiple variation in view of the above, for example divide fluid also can fixedly connected by screw, but any and the utility model are equal to or similar variation all should be encompassed in the scope of the utility model claim with core.

Claims (15)

1. regulation free type extruder head; comprise core, external mold, connecting portion, branch fluid and connector; described external mold has cavity; described core is located in this cavity; it is characterized in that: be formed with between described core and the external mold and melt the materials flow road; this melts materials flow road end and is formed with forming tank; described core, external mold are connected to form one by connecting portion; described connecting portion is located at described melting in the materials flow road; this connecting portion has some grooves that run through; fluid was fixedlyed connected with described core or external mold in described minute, and fluid had the branch flow cone in described minute.
2. regulation free type extruder head as claimed in claim 1 is characterized in that: described core has core body and the integrally formed inwall forming part of this core body.
3. regulation free type extruder head as claimed in claim 2 is characterized in that: described external mold has an external mold body and a mouthful mould, and this mouthful mould is integrally formed with this outer mould body, and this mouthful mould is outside the inwall forming part of described core.
4. regulation free type extruder head as claimed in claim 2 is characterized in that: described external mold has an external mold body and a mouthful mould, and this mouthful mould is fixedlyed connected with this outer mould body, and this mouthful mould is outside the inwall forming part of described core.
5. regulation free type extruder head as claimed in claim 4 is characterized in that: fluid had the shunting frame in described minute, and this shunting frame middle part has protruded out described shunting awl, and this shunting frame has some shuntings chamber, and this shunting chamber is communicated with the groove that runs through of described connecting portion.
6. regulation free type extruder head as claimed in claim 5 is characterized in that: described connector has the body of connection and tube portion, and this connects body fixedlys connected with described shunting frame, and the branch flow cone of described minute fluid is located in the tube chamber of this one.
7. regulation free type extruder head as claimed in claim 5, it is characterized in that: the mouth mould inwall end of described external mold is provided with holddown groove, be provided with ring spacer in this holddown groove, and fix this ring spacer with sealing cap, this sealing cap has the cover plate and the stationary magazine creel that is extended to form by this cover plate of perforate, this sealing cap is fixed on the described mouthful of mould by this stationary magazine creel, and this sealing cap passes through fixedly ring spacer of this cover plate butt.
8. regulation free type extruder head as claimed in claim 7 is characterized in that: described ring spacer has some specifications, and the external diameter of this ring spacer is identical and internal diameter is different.
9. regulation free type extruder head as claimed in claim 8 is characterized in that: described ring spacer is the tetrafluoro packing ring.
10. regulation free type extruder head as claimed in claim 7 is characterized in that: be provided with annular shim in the described sealing cap, this annular shim and described ring spacer butt.
11. regulation free type extruder head as claimed in claim 7 is characterized in that: be provided with fixed ring piece in the holddown groove of described external mold, this fixed ring piece is placed in described annular shim outside, and described mouthful of mould offers some screws, is fixed with adjustment screw in this screw.
12. as each described regulation free type extruder head in the claim 1 to 11, it is characterized in that: described external mold is provided with the external mold fixing hole, fluid was provided with branch fluid fixing hole in described minute, described connector is provided with the connector fixing hole, by screw insert this external mold fixing hole, this minute the fluid fixing hole and this connector fixing hole described external mold, described minute fluid and described connector are fixed together.
13. as each described regulation free type extruder head in the claim 1 to 11, it is characterized in that: described core is provided with through hole, fluid was provided with blowhole in described minute, and this blowhole is communicated with this through hole.
14. regulation free type extruder head, comprise core, external mold, described external mold has cavity and melts the material inlet, described core is provided with through hole, and described core is located in this cavity, is formed with between described core and the external mold and melts the materials flow road, this melts materials flow road end and is formed with forming tank, this melts the materials flow road expects that with described melting inlet is communicated with, and it is characterized in that: described core, external mold are connected to form one by connecting portion, and described connecting portion is located at described melting in the materials flow road.
15. regulation free type extruder head as claimed in claim 14 is characterized in that: described external mold has an external mold body and a mouthful mould, and this mouthful mould is fixedlyed connected with this outer mould body.
CN201120207299XU 2011-06-09 2011-06-09 Adjustment-free extruding machine head Expired - Lifetime CN202088428U (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102568709A (en) * 2012-03-05 2012-07-11 上海易初电线电缆有限公司 Flat cable extruder head free of deviation regulation
CN102814960A (en) * 2011-06-09 2012-12-12 深圳市沃尔核材股份有限公司 Adjusting-free type extrusion machine head
CN103128948A (en) * 2012-09-29 2013-06-05 湖北帅力化工有限公司 Adjustable nose for plastic detonating cord plastic coating and extruding machine
CN105599263A (en) * 2016-03-04 2016-05-25 浙江竟成特种单丝有限公司 Special extrusion machine for producing edible conveying special monofilaments
CN109390108A (en) * 2017-08-04 2019-02-26 中天射频电缆有限公司 The forming method of cable and its insulating element

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102814960A (en) * 2011-06-09 2012-12-12 深圳市沃尔核材股份有限公司 Adjusting-free type extrusion machine head
CN102814960B (en) * 2011-06-09 2015-11-25 深圳市沃尔核材股份有限公司 Adjustment-free extruding machine head
CN102568709A (en) * 2012-03-05 2012-07-11 上海易初电线电缆有限公司 Flat cable extruder head free of deviation regulation
CN102568709B (en) * 2012-03-05 2013-08-14 上海易初电线电缆有限公司 Flat cable extruder head free of deviation regulation
CN103128948A (en) * 2012-09-29 2013-06-05 湖北帅力化工有限公司 Adjustable nose for plastic detonating cord plastic coating and extruding machine
CN103128948B (en) * 2012-09-29 2015-04-01 湖北帅力化工有限公司 Adjustable nose for plastic detonating cord plastic coating and extruding machine
CN105599263A (en) * 2016-03-04 2016-05-25 浙江竟成特种单丝有限公司 Special extrusion machine for producing edible conveying special monofilaments
CN109390108A (en) * 2017-08-04 2019-02-26 中天射频电缆有限公司 The forming method of cable and its insulating element
CN109390108B (en) * 2017-08-04 2019-12-24 中天射频电缆有限公司 Cable and method for forming insulating part thereof

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