CN209775604U - device for continuously producing multilayer composite insulating sleeve - Google Patents
device for continuously producing multilayer composite insulating sleeve Download PDFInfo
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- CN209775604U CN209775604U CN201920224437.1U CN201920224437U CN209775604U CN 209775604 U CN209775604 U CN 209775604U CN 201920224437 U CN201920224437 U CN 201920224437U CN 209775604 U CN209775604 U CN 209775604U
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Abstract
A device for continuously producing a multilayer composite insulating sleeve comprises an extrusion molding machine, a core tube shaping device, a warp-weft knitting machine, a spraying machine, a composite tube sizing shaping device and a traction device for driving the sleeve to move, wherein the extrusion molding machine, the core tube shaping device, the warp-weft knitting machine, the spraying machine and the composite tube sizing shaping device are sequentially arranged along the conveying direction of the sleeve; the core tube extrusion molding machine is used for preparing a core tube of the sleeve; the warp-weft knitting machine is used for knitting the glass fiber yarns to form a glass fiber supporting layer and wrapping the glass fiber supporting layer on the core pipe of the sleeve; the spraying machine is arranged on one side of the sleeve conveying line, and is used for spraying a protective material on the sleeve inner pipe wrapped with the glass fiber layer to form an outer protective layer. The utility model discloses a simple structure of device through adopting the longitude and latitude braider, establishes the glass fiber supporting layer to current electric power sheathed tube core pipe cover to realize serialization production, showing the whole atress performance that has improved the insulating tube body, and alleviateed the quality of tubular product.
Description
Technical Field
The utility model relates to an electric power insulation support's apparatus for producing especially relates to a compound insulation support's of continuous production multilayer device.
Background
The applications of the electric wire and the electric cable are mainly divided into three main categories, namely an electric power system, an information transmission system, mechanical equipment and an instrument system. The electric wire and cable products are mainly divided into five major categories, namely bare wires and bare conductor products, electric power cables, electric wire and cables for electrical equipment, communication cables, optical fibers and electromagnetic wires. The power cable is mainly characterized in that the conductor is externally extruded (wound) with an insulating layer, such as an overhead insulated cable, or several-core twisted (corresponding to a phase line, a zero line and a ground wire of a power system), such as an overhead insulated cable with more than two cores, or a sheath layer is added, such as a plastic/rubber-sheathed wire cable.
however, the weather resistance and the anti-brittle-fracture performance of wires and cables in some industries are higher and higher, the common multifunctional cable adopts the conventional polyvinyl chloride, cross-linked polyolefin and other materials as the insulating and sheathing materials, and the insulating tube made of the materials has the defects of poor overall strength, poor weather resistance and the like.
CN108879513A discloses an insulating sleeve for cable protection, which is an outer protective layer prepared from a silicone rubber material, a metal woven mesh, a glass fiber mesh and a heat-resistant composition, which are sequentially arranged from outside to inside; the structure thereof is relatively complicated and a method for producing the insulating sleeve is not disclosed.
most of the existing bushings containing glass fibers are produced intermittently, and cannot meet the increasing market demand, so that a method for continuously producing the multilayer composite insulating bushings containing the glass fibers is urgently needed to be developed.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: the special device for continuously producing the multilayer composite insulating sleeve overcomes the defects of the prior art, has simple structure, low manufacturing cost and convenient operation, and can be used for large-scale production.
The utility model provides a technical scheme that its technical problem adopted is:
A device for continuously producing a multilayer composite insulating sleeve comprises an extrusion molding machine, a core tube shaping device, a warp-weft knitting machine, a spraying machine, a composite tube sizing shaping device and a traction device for driving the sleeve to move, wherein the extrusion molding machine, the core tube shaping device, the warp-weft knitting machine, the spraying machine and the composite tube sizing shaping device are sequentially arranged along the conveying direction of the sleeve; the core tube extrusion molding machine is used for preparing a core tube of the sleeve; the warp and weft knitting machine is used for knitting glass fiber yarns to form a glass fiber supporting layer and wrapping the glass fiber supporting layer on the core pipe of the sleeve, or the warp and weft knitting machine directly wraps the woven bag on the core pipe of the sleeve; the spraying machine is arranged on one side of the sleeve conveying line, and protective materials are coated on the inner pipe, wrapped with the glass fiber layer, of the sleeve to form an outer protective layer.
In one exemplary embodiment, the spray plate of the coating machine is provided with heating devices, the heating devices are annularly distributed on two end faces of the spray plate of the coating machine, and the heating devices are inclined towards the central axis of the spray plate; the glass fiber supporting layer outside the core pipe to be sprayed and the outer protective layer sprayed on the sleeve supporting layer are heated, so that the combination of the glass fiber supporting layer and the supporting layer is promoted, and the subsequent sizing and shaping device for the composite pipe is convenient for sizing and processing the sleeve.
in one exemplary embodiment, the warp knitting machine comprises a warp knitting mechanism and a weft knitting mechanism, the warp knitting mechanism comprises a plurality of warp yarn transmission pipes which are arranged on the circumference and used for transmitting warp yarns, the upper ends of the adjacent warp yarn transmission pipes, which serve as the outgoing direction, are distributed in an inner-outer crossed staggered manner to form the inner ring warp yarn transmission pipe and the outer ring warp yarn transmission pipe, a pushing device which pushes the warp yarn transmission pipes to the inner direction and the outer direction is arranged between the inner ring warp yarn transmission pipe and the outer ring warp yarn transmission pipe, the pushing device moves along the circumference between the inner ring warp yarn transmission pipe and the outer ring warp yarn transmission pipe, and each warp yarn transmission pipe is provided with a resetting device; at least two weft shuttles which are used for placing weft spools and do equal angular velocity circular motion in the same direction with the push-up device are arranged between the upper part of the warp yarn transmission pipe of the inner ring and the upper part of the warp yarn transmission pipe of the outer ring; the first weft shuttle moves between the inner ring warp yarn transmission pipe pushed away from the original position and the outer ring warp yarn transmission pipe corresponding to the back of the push-up device, and the second weft shuttle moves between the reset inner ring warp yarn transmission pipe and the outer ring warp yarn transmission pipe.
in one exemplary embodiment, the extrusion die head at the discharge end of the extrusion molding machine comprises an inner die and an outer die, wherein the outer die is a hollow cylinder, the bottom of the outer die is connected with the inner die part, a plurality of die plates are arranged on the inner die at intervals, and a reserved hole is formed between every two adjacent die plates; the difference between the inner diameter of the inner die and the outer diameter of the central shaft of the extrusion molding machine is equal to the thickness of the inner wall of the core pipe.
In an exemplary embodiment, the apparatus for continuously producing a multi-layer composite insulation sleeve further comprises a cutter installed after the drawing device for cutting the continuously produced and formed sleeve into products with required lengths.
The utility model discloses further solve the technical scheme that its technical problem adopted and be:
A method of continuously producing a multi-layer composite insulating sleeve comprising the steps of:
1) Manufacturing a core tube: extruding and molding the PVC raw material of the sleeve core pipe by using an extrusion molding machine to obtain a core pipe, and conveying the core pipe to a core pipe molding device for primary cooling and molding;
2) Weaving a glass fiber support layer: with the forward movement of the core tube prepared in the step 1), continuously weaving glass fibers on the outer side of the core tube by a warp-weft knitting machine to form a glass fiber supporting layer and wrapping the glass fiber supporting layer on the core tube of the sleeve, or directly wrapping a woven bag on the core tube of the sleeve;
3) Spraying an outer protective layer: conveying the core pipe sleeved with the glass fiber supporting layer processed in the step 2) to a spraying machine, spraying the material of the outer protective layer onto the glass fiber supporting layer by a spraying disc of the spraying machine, and cooling and shaping the core pipe by a composite pipe sizing and shaping device;
4) Slitting: cutting the sleeve processed in the step 3) into a sleeve finished product by a cutting machine.
The utility model discloses further solve the technical scheme that its technical problem adopted and be:
The multilayer composite insulating sleeve prepared by the method comprises a core pipe, a glass fiber supporting layer and an outer protective layer.
in one exemplary embodiment, the core tube consists of an inner wall of the core tube, supports and an outer wall of the core tube, wherein the supports are arranged between the inner wall of the core tube and the outer wall of the core tube at intervals along the axial direction of the core tube body; the cavity enclosed by the inner wall of the core tube and the outer wall of the core tube is divided into a plurality of hollow through holes.
the utility model relates to a continuous production multilayer composite insulation sleeve's device's beneficial effect: the structure is simple, the glass fiber supporting layer is arranged on the core tube sleeve of the existing electric power sleeve by adopting a warp and weft knitting machine, the continuous production is realized, the integral stress performance of the insulating tube body is obviously improved, and the quality of the tube is reduced.
The utility model relates to a beneficial effect of continuous production multilayer composite insulation sleeve's method: the operation is simple, the large-scale production is convenient, and the continuous production can be realized.
The utility model relates to a compound insulation support of multilayer's beneficial effect: the insulating sleeve has the advantages that the structure is simple, the manufacturing cost is low, the hollow through hole is formed in the core pipe, the insulating property of the insulating sleeve is improved, the whole stress performance of the insulating pipe body is improved by the glass fiber supporting layer, and the quality of the pipe is reduced.
Drawings
FIG. 1 is a schematic view showing the construction of an apparatus for continuously producing a multi-layer composite insulating sleeve according to example 1;
Fig. 2-is a schematic structural view of the knitting machine of fig. 1;
FIG. 3 is a schematic structural view of a spray plate of the coating machine of FIG. 1;
FIG. 4 is a schematic cross-sectional view of a composite bushing produced by the method described in example 1;
FIG. 5-is a schematic diagram of the structure of the extrusion die in example 2;
FIG. 6 is a side view of the outer mold and the middle mold of FIG. 5;
FIG. 7 is an enlarged view of the junction between the outer mold and the middle mold of FIG. 6;
FIG. 8 is an enlarged view of the point A in FIG. 5;
Fig. 9-is a schematic cross-sectional view of a composite insulating bushing produced by the method described in example 2.
In the figure, 1-extrusion moulding machine, 2-extrusion die head, 21-inner die, 211-die plate, 212-preformed hole, 22-outer die, 23-pin block, 231-lug, 232-groove, 3-core tube shaping device, 4-warp and weft knitting machine, 41-upper disc, 411-gear ring B, 412-auxiliary gear, 413-auxiliary catch wheel, 4141-first weft shuttle, 4142-second weft shuttle; 42-chassis, 421-gear ring A, 422-convex part, 423-deflector rod, 424-runner, 425-spring, 426-warp transmission pipe; 43-gear shaft, 44-variable frequency motor, 45-driving gear, 46-secondary gear, 47-worm, 48-warp pipe groove; 5-a spraying machine, 51-a spraying disc, 511-a connecting arm, 512-a nozzle, 513-a heating device, 6-a composite pipe sizing and shaping device, 7-a traction device and 8-a cutting machine; 9-core tube, 91-core tube inner wall, 92-support, 93-core tube outer wall; 10-glass fiber supporting layer, 11-outer protective layer.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
example 1
referring to fig. 1 ~ 3, the device for continuously producing the multilayer composite insulating sleeve comprises an extrusion molding machine 1, a core tube shaping device 3, a warp and weft knitting machine 4, a spraying machine 5, a composite tube sizing and shaping device 6 and a traction device 7, wherein the extrusion molding machine 1, the core tube shaping device 3, the warp and weft knitting machine 4, the spraying machine 5 and the composite tube sizing and shaping device 6 are sequentially arranged along the conveying direction of the sleeve, the traction device 7 is used for driving the sleeve to move, the core tube 9 is used for preparing the sleeve by the extrusion molding machine 1, the warp and weft knitting machine 4 is used for knitting glass fiber yarns to form a glass fiber supporting layer 10 and wrapping the glass fiber supporting layer on the sleeve 9, the spraying machine 5 is arranged on one side of a sleeve conveying line.
the extrusion die head 2 positioned at the discharge end of the extrusion molding machine 1 is a hollow cylinder.
the spray plate 51 of the coating machine 5 is provided with a heating device 513, the heating device 513 is annular and is arranged on two end faces of the spray plate 51 of the coating machine 5, and the heating device 513 inclines towards the central axis of the spray plate 51; and the glass fiber supporting layer 10 outside the core pipe 9 to be sprayed and the outer protective layer 11 sprayed on the sleeve supporting layer are heated on two sides of the spray nozzle 512 positioned in the middle of the spray disk 51, so that the combination of the glass fiber supporting layer and the supporting layer is promoted, and the subsequent sizing processing of the sleeve by the composite pipe sizing and shaping device 6 is facilitated. Spray plate 51 is connected to the body of applicator 5 by a connecting arm.
the device for continuously producing the multilayer composite insulating sleeve further comprises a cutting machine 8 arranged behind the traction device 7 and used for cutting the continuously produced and formed sleeve into products with required lengths.
The warp and weft knitting machine 4 comprises a warp knitting mechanism and a weft knitting mechanism, the warp knitting mechanism comprises a plurality of warp yarn transmission pipes which are arranged on the circumference and used for transmitting warps, the upper ends of the adjacent warp yarn transmission pipes, which serve as the outgoing direction, are distributed in an inner-outer crossed staggered manner to form the inner ring warp yarn transmission pipe and the outer ring warp yarn transmission pipe, a pushing device which pushes the warp yarn transmission pipes to the inner direction and the outer direction is arranged between the inner ring warp yarn transmission pipe and the outer ring warp yarn transmission pipe, the pushing device moves along the circumference between the inner ring warp yarn transmission pipe and the outer ring warp yarn transmission pipe, and each warp yarn transmission pipe is provided with a resetting device; at least two weft shuttles which are used for placing weft spools and do equal angular velocity circular motion in the same direction with the push-up device are arranged between the upper part of the warp yarn transmission pipe of the inner ring and the upper part of the warp yarn transmission pipe of the outer ring; the first weft shuttle 4141 moves between the inner-ring warp yarn tube pushed out of the original position and the outer-ring warp yarn tube corresponding to the rear face of the push-up device, and the second weft shuttle 4142 moves between the inner-ring warp yarn tube restored and the outer-ring warp yarn tube restored.
The upper disc 41 is evenly provided with a plurality of meridian pipe grooves 48 which penetrate through the upper surface and the lower surface of the upper disc, and the meridian pipe grooves are arranged radially on the circumference. A warp wire conduit 426 is provided in each warp wire conduit groove 48. The lower end of the warp transmission pipe 36 is connected with a shift lever 423, and the shift lever 423 is hinged on the chassis 3 through a small bearing seat. The small bearing blocks are respectively and uniformly distributed and fixed on the inner side and the outer side of the gear ring A421 on the chassis 42, and the small bearing blocks on the inner side and the outer side are sequentially and internally and alternately arranged. The shift lever 423 is in an L-shaped rod shape, the lower part of the shift lever 423 is installed in the small bearing seat through a bearing, the upper end of the shift lever 423 is connected with the warp conveying pipe, and the shift lever 423 is further connected with a spring 425. The spring on the shifting rod positioned outside the gear ring A is connected to the small bearing seat adjacent to the inner side of the gear ring A, and the spring on the shifting rod positioned inside the gear ring A is connected to the small bearing seat adjacent to the outer side of the gear ring A. Under the action of the tension of the spring 425, the warp yarn conveying pipe arranged on the deflector rod on the outer side of the gear ring A inclines inwards, and the warp yarn conveying pipe arranged on the deflector rod on the inner side of the gear ring A inclines outwards. Thus, the upper ends of the adjacent warp yarn transmission pipes are in inside and outside cross staggered distribution.
The warp yarn conveying pipes are respectively hinged on a chassis 42, and each warp yarn conveying pipe is provided with a spring for resetting the warp yarn conveying pipe; the chassis 42 is also provided with a gear ring A421 for driving the push-up device to move along the circumference, the push-up device is a convex part 422 arranged on the end surface of the gear ring A421, and the convex part 422 corresponds to the lower end of each warp yarn conveying pipe and pushes the warp yarn conveying pipe away from the original position; an upper disc 41 is arranged corresponding to the upper part of the warp yarn transmission pipe, and a gear ring B411 which drives a weft yarn shuttle to do circular motion is arranged on the upper disc 41; the protrusion 422 of the push-up device is located at the front end of the first weft shuttle 4141 in the moving direction and vertically corresponds to the first weft shuttle 4141.
the power machine is a variable frequency motor 44, so that the weaving speed of the device can be properly adjusted. Of course, the variable frequency motor can be replaced by other power machines, such as a linkage shaft which can simultaneously drive a plurality of knitting machines to work. The driving gear 45 is installed at the front end of the output shaft of the variable frequency motor. The secondary gear 46 is engaged with the driving gear 45 for transmitting the power provided by the inverter motor to the gear shaft 43 and the worm 47.
A method of continuously producing a multi-layer composite insulating sleeve comprising the steps of:
1) Manufacturing a core tube 9: extruding and molding the PVC raw material of the sleeve core pipe 9 by using an extrusion molding machine 1 to obtain a core pipe 9, and conveying the core pipe 9 to a core pipe shaping device 3 for preliminary cooling and shaping;
2) Woven glass fiber support layer 10: with the forward movement of the core tube 9 prepared in the step 1), the warp and weft knitting machines 4 continuously knit the glass fiber on the outer side of the core tube 9 to form a glass fiber supporting layer 10 and wrap the glass fiber supporting layer on the core tube of the sleeve;
3) spraying an outer protective layer 11: conveying the core pipe 9 sleeved with the glass fiber supporting layer 10 processed in the step 2) to a spraying machine 5, spraying the material of the outer protective layer 11 on the glass fiber supporting layer 10 by a spraying disc 51 of the spraying machine 5, and cooling and shaping the glass fiber supporting layer by a composite pipe sizing and shaping device 6;
4) Slitting: cutting the sleeve processed in the step 3) into a sleeve finished product through a cutting machine 8.
the multilayer composite insulating sleeve prepared by the method comprises a core pipe 9, a glass fiber supporting layer 10 and an outer protective layer 11, as shown in fig. 4.
Example 2
referring ~ fig. 5 ~ 8, compared with embodiment 1, the apparatus for continuously producing a multilayer composite insulating sleeve of the present embodiment has the following differences:
the warp and weft knitting machines directly wrap the woven bags on the core pipe of the sleeve.
The extrusion die head 2 positioned at the discharge end of the extrusion molding machine 1 comprises an inner die 21 and an outer die 22, the outer die 22 is a hollow cylinder, the bottom of the outer die is connected with the inner die 21, a plurality of die plates 211 are arranged on the inner die 21 at intervals, and a preformed hole 212 is arranged between every two adjacent die plates 211; the difference between the inner diameter of the inner die 21 and the outer diameter of the central shaft of the extrusion molding machine 1 is equal to the thickness of the inner wall of the core tube 9.
The lower end of the inner die 21 is provided with a pin block 23, the outer wall of the front end of the pin block 23 is provided with a convex block 231 and a groove 232, the convex block 231 and the groove 232 are arranged in a crossed manner, the outer wall of the outer die 22 is provided with a through hole, and the pin block 23 is inserted into the through hole formed in the outer wall of the outer die 22.
The method for producing the multilayer composite insulating sleeve by adopting the device for continuously producing the multilayer composite insulating sleeve is the same as that of the embodiment 1; the multilayer composite insulating sleeve prepared by the method is shown in fig. 9, wherein the core tube 9 consists of an inner core tube wall 91, supports 92 and an outer core tube wall 93, and the supports 92 are arranged between the inner core tube wall 91 and the outer core tube wall 93 at intervals along the axial direction of the core tube body; the cavity enclosed by the inner wall 91 of the core tube and the outer wall 93 of the core tube is divided into a plurality of hollow through holes 94.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may include, for example, a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Claims (7)
1. A device for continuously producing a multilayer composite insulating sleeve is characterized by comprising an extrusion molding machine, a core tube sizing device, a warp-weft knitting machine, a spraying machine, a composite tube sizing device and a traction device for driving the sleeve to move, wherein the extrusion molding machine, the core tube sizing device, the warp-weft knitting machine, the spraying machine and the composite tube sizing device are sequentially arranged along the conveying direction of the sleeve; the core tube extrusion molding machine is used for preparing a core tube of the sleeve; the warp and weft knitting machine is used for knitting glass fiber yarns to form a glass fiber supporting layer and wrapping the glass fiber supporting layer on the core pipe of the sleeve, or the warp and weft knitting machine directly wraps the woven bag on the core pipe of the sleeve; the spraying machine is arranged on one side of the sleeve conveying line, and is used for spraying a protective material on the sleeve inner pipe wrapped with the glass fiber layer to form an outer protective layer.
2. The apparatus for continuously producing a multi-layer composite insulating sleeve according to claim 1, wherein the spraying plate of the spraying machine is provided with heating devices, the heating devices are annularly distributed on two end surfaces of the spraying plate of the spraying machine, and the heating devices are inclined towards the central axis of the spraying plate.
3. The apparatus for continuously producing a multi-layer composite insulating sleeve according to claim 1, wherein the warp knitting machine comprises a warp knitting mechanism and a weft knitting mechanism, the warp knitting mechanism comprises a plurality of warp yarn transmission tubes for transmitting warp yarns arranged on the circumference, the upper ends of the adjacent warp yarn transmission tubes as the outgoing directions are distributed in a staggered manner inside and outside to form the warp yarn transmission tubes of the inner ring and the warp yarn transmission tubes of the outer ring, a pushing device for pushing the warp yarn transmission tubes to opposite directions inside and outside is arranged between the warp yarn transmission tubes of the inner ring and the warp yarn transmission tubes of the outer ring, the pushing device moves along the circumference between the warp yarn transmission tubes of the inner ring and the warp yarn transmission tubes of the outer ring, and a reset device is arranged on each warp yarn transmission tube; at least two weft shuttles which are used for placing weft spools and do equal angular velocity circular motion in the same direction with the push-up device are arranged between the upper part of the warp yarn transmission pipe of the inner ring and the upper part of the warp yarn transmission pipe of the outer ring; the first weft shuttle moves between the inner ring warp yarn transmission pipe pushed away from the original position and the outer ring warp yarn transmission pipe corresponding to the back of the push-up device, and the second weft shuttle moves between the reset inner ring warp yarn transmission pipe and the outer ring warp yarn transmission pipe.
4. the apparatus for continuously producing a multi-layer composite insulating sleeve as claimed in any one of claims 1 ~ 3, wherein the extrusion die head at the discharge end of the extrusion molding machine comprises an inner mold and an outer mold, the outer mold is a hollow cylinder, the bottom of the outer mold is connected with the inner mold, a plurality of mold plates are arranged on the inner mold at intervals, a reserved hole is arranged between every two adjacent mold plates, and the difference between the inner diameter of the inner mold and the outer diameter of the central shaft of the extrusion molding machine is equal ~ the thickness of the inner wall of the core tube.
5. the apparatus for continuously producing a multi-layer composite insulation bushing according ~ any one of claims 1 ~ 3, further comprising a cutter installed after the drawing device for cutting the continuously produced and formed bushing ~ a desired length.
6. the apparatus for continuously producing a multilayer composite insulation bushing according ~ any of claims 1 ~ 3, wherein the multilayer composite insulation bushing comprises a core tube, a glass fiber support layer and an outer protective layer.
7. The apparatus for continuously producing a multilayer composite insulating bushing according to claim 6, wherein the core tube is composed of an inner core tube wall, supports and an outer core tube wall, the supports being disposed between the inner core tube wall and the outer core tube wall at intervals in an axial direction of the core tube body; the cavity enclosed by the inner wall of the core tube and the outer wall of the core tube is divided into a plurality of hollow through holes.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920224437.1U CN209775604U (en) | 2019-02-22 | 2019-02-22 | device for continuously producing multilayer composite insulating sleeve |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920224437.1U CN209775604U (en) | 2019-02-22 | 2019-02-22 | device for continuously producing multilayer composite insulating sleeve |
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| CN209775604U true CN209775604U (en) | 2019-12-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109808205A (en) * | 2019-02-22 | 2019-05-28 | 湖南沃开新材料科技有限公司 | A kind of device and method of continuous production MULTILAYER COMPOSITE insulating sleeve |
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2019
- 2019-02-22 CN CN201920224437.1U patent/CN209775604U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109808205A (en) * | 2019-02-22 | 2019-05-28 | 湖南沃开新材料科技有限公司 | A kind of device and method of continuous production MULTILAYER COMPOSITE insulating sleeve |
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