JP3236582U - Cable covering material manufacturing equipment and its products - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cable covering material manufacturing apparatus and a product thereof, which have a simple process, low cost, enable high-speed and continuous production, and can save the cost of processing equipment and consumables. SOLUTION: The cable covering material manufacturing apparatus includes a biaxial or uniaxial screw mixer, a blow extrusion molding head 40, and a cooling device, and the blow extrusion molding heads are communicated with each other at intervals. The annular extrusion port 41 and the linear extrusion port 42 are included, and the annular extrusion port has an outer annular flow path and a gas passage provided therein, and both ends of the annular flow path are provided with linear extrusion ports, respectively. Each gas passage is connected to an external gas source 43 and continues to supply gas to the gas passage at the processing stage. A special extrusion head can be used to extrude a new cable covering with only a single layer for integral molding. [Selection diagram] FIG. 5

Description

The present invention relates to a covering material, and is particularly used for work machines, electronic devices, industrial robots, transfer machines, etc., and is an electric cable for supplying power, supplying liquid, and supplying air to a moving machine or a moving part of the machine. The present invention relates to a flexible cable such as an optical fiber cable and a soft tube for fluid supply, a coating material having abrasion resistance and bending resistance for covering the outside of the soft tube, an apparatus thereof, and a method for manufacturing the same.

At the connection part of the electric cable of a movable machine such as a general work machine, processing machine, transfer device, etc., excessive twisting or tension is generated at the position of the cable as it moves, and the cable may be damaged or its appearance may be spoiled. And may require the insertion of multiple wires / cables in one machine, so that these wires / cables do not interfere with each other and even get entangled and damaged during travel. Usually, the outside of the plurality of wires / cables is covered with a single layer of covering material so that the problem does not occur.

However, current wire / cable coverings are often too thick to bend significantly, wear resistance and durability often do not meet standards and are often replaced. The process is time consuming and material cost is required and needs improvement. At the same time, how to provide more cost-competitive products in production and manufacturing is a major issue in this field.

Provided is a cable covering material that solves the problem that the conventional wire / cable covering material is excessively thick and has poor wear resistance and durability.

The present invention includes a first layer having a sheet structure and a second layer having a sheet structure, and the inside of the first layer and the second layer is expanded to form a plurality of tubular space. Then, the second layer and the first layer are melt-bonded to each other in a plane at intervals, and both sides of the first layer and the second layer of each of the plurality of tubular space are melted and bonded to each other. Provided is a cable covering material that forms a portion.

In the cable covering material of the present invention, the selected materials of the first layer and the second layer include a thermoplastic polyester elastic body and / or a fluorine-containing resin.

In the cable covering material of the present invention, the fatigue resistance performance of the cable covering material is 5 million times or more, preferably 20 million times or more.

In the cable covering material of the present invention, the cross section of the plurality of tubular space may include a circle, a rectangle, an ellipse, or a rectangle.

In the cable covering material of the present invention, the cross-sectional shape of each tubular portion in the plurality of tubular portion spaces is different.

The present invention is used in the manufacture of cable coverings,
With a biaxial or uniaxial screw mixer,
Blow extrusion head and
Prepared to arrange the cooling devices and the cooling devices next to each other in order.
A plurality of annular extrusion ports and linear extrusion ports are communicated with each other at intervals, and the annular extrusion port has an outer annular flow path and a gas passage provided in the annular flow path, and both ends of the annular flow path. Provides a cable covering material manufacturing apparatus in which each of the linear extrusion ports is provided, each of the gas passages is connected to an external gas source, and gas is continuously supplied to the gas passage at the processing stage.

In the device for producing the cable covering material of the present invention, the cooling device includes a water bath and a spray device, the cable covering material is maintained on the water surface of the water bath, and the spray device is a device thereof of the cable covering material. Spray water toward the surface.

In the device for manufacturing the cable covering material of the present invention, the cooling device further includes a roller machine, and the roller machine includes an upper roller and a lower rotor that sandwich the cable covering material and roll it flat and smooth.

According to the above description, the present invention has the following advantages and beneficial effects.
1. 1. The present invention uses a special extrusion head, extrudes the coating material with only a single layer and integrally molds, the process is simple and low cost, and the blow extrusion head device enables high speed and continuous production of the process. Moreover, it is more advantageous in terms of cost in terms of the single-layer structure and process of the covering material, and can assist in saving the cost of the processing equipment and the consumable material.
2. 2. The fatigue performance of the cable covering material provided by the present invention reaches 5 million times or more, further 20 million times or more, and the present invention solves the problem that the conventional cable covering material does not have good durability and wear resistance. It provides the beneficial effect of helping to save costs on processing equipment and consumables.

It is explanatory drawing of the preferable embodiment of the cable covering material of this invention. It is a usage explanatory drawing of the preferable embodiment of the cable covering material of this invention. It is a flow diagram of manufacturing of the cable covering material of this invention. It is explanatory drawing of the blow extrusion molding head of this invention. It is explanatory drawing of the manufacturing apparatus and the whole manufacturing process of this invention.

The present invention will be further described by way of exemplary embodiments, and these exemplary embodiments will be described in detail with reference to the drawings, but these examples are not intended to be limiting. In these examples, the same members are indicated by the same reference numerals.

In order to explain the technical proposal of the utility model more clearly, the drawings used in the explanation of the examples will be briefly introduced below. Of course, the drawings described below are merely examples or examples of the present invention, and those skilled in the art will appreciate the present invention in other similar situations based on these drawings on the premise that no creative effort is required. It can be applied. Unless otherwise obvious or otherwise explained from the linguistic environment, the same reference numerals in the figure represent the same structure or operation.

The words "1", "2", "1st", "2nd" or "above" quoted in the following explanation are intended to explain structural elements more clearly and clearly, and are quantifiers. Not a single meaning. At the same time, the "system", "device", "unit", "element", "member" and / or "module" used in the text distinguish between different components, elements, members, parts or assemblies of different classes. Is for. However, if other words can achieve the same purpose, the words can be replaced with other expressions.

<Cable covering material>
With reference to FIG. 1, FIG. 1 shows the cable covering material 10 of the present invention, which includes the first layer 11 and the second layer 13, and the first layer 11 and the second layer. Reference numeral 13 is a sheet, which is melt-bonded to each other on a plane at intervals, but the positions of the two sheets are not partially spaced from each other and are formed by inflating the inside. In a state where the tubular space 12 is arranged in parallel, the planes of the first layer 11 and the second layer 13 between the plurality of tubular spaces 12 form a joint 14 with each other and are connected to the joint 14. The first layer 11 and the second layer 13 located are melt-bonded to each other, and the joint portion 14 is similarly provided on both outermost sides of the cable covering material 10. Further, the specific form of the plurality of tubular portion spaces 12 may be any of a circular cross section, a rectangular cross section, an elliptical cross section, and a rectangular cross section, but the present invention is not limited thereto. Further, the number of installations of the plurality of tubular space 12 is a preferred embodiment of the present invention, and it may be at least one, and each cable, optical fiber, pipe material, etc. to be inserted can be inserted into this. The fact that the number can be set and that contact with each other can be avoided is what the present invention wants to protect.

With reference to FIG. 2, when using the present invention, the user can pass a wire / cable 20, an optical fiber, a pipe material, or the like connected to a socket of the machine through the tubular portion space 12, whereby the above-mentioned in the present invention. By covering the outside of the wire / cable 20 and adopting a material having a smooth surface, the present invention allows the user to pass the wire / cable 20 through the present invention satisfactorily without obstruction. Further, as shown in FIG. 2, the tubular space 12 having a different cross-sectional shape allows the present invention to be installed through the different wire / cable 20 or any combination as required by the user. , Optimal mobility and convenience applications can be achieved.

<Material of cable covering material>
Further, the first layer 11 and the second layer 13 of the present invention are flexible materials, more preferably a material having a smooth surface and slippery surface, and the surface resistance value of the materials is at least an antistatic grade specification. To reach. Here, the selected material of the first layer 11 and the second layer 13 of the present invention may be a thermoplastic polyester elastic body (TPEE), and in order to increase the smoothness of the surface, an anti-blocking agent. , Such as a slipperiness improver, for example, a fluorine-containing polymer material and the like are preferably contained.

<Manufacturing equipment and method for cable covering materials>
With reference to FIG. 3, the method of manufacturing the cable covering material 10 of the present invention preferably includes the following steps.
S31) Mixing step,
S32) Extrusion process,
S33) Cooling molding process,
S34) Roll forming process (selectable),
S35) Winding process (selectable).

First, in the above-mentioned mixing step of the present invention, a chemical material mixing process is performed using a biaxial or uniaxial screw mixer, and at the time of mixing, an optimum mixing effect is achieved by utilizing a multi-stage temperature control technique, for example. Multi-stage mixing temperature: After mixing at 140-175-190-190-200-190-180-185-185-170-160-150 ° C., the sheet material is subsequently extruded with an extrusion molding head, and the thickness of the sheet material is determined. It is preferably 50 to 100 μm, for example, 60 μm.

Next, after the above-mentioned biaxial or uniaxial screw mixer mixes the plastic material, molding is performed by the blow extrusion molding head 40 that is communicated with the screw mixer. As shown in FIG. 4, the blow extrusion molding head 40 has a plurality of annular extrusion ports 41 and linear extrusion ports 42 that are communicated with each other at intervals, and the plurality of tubular portion spaces 12 and each tubular portion space. It is used to form a coupling portion 14 connecting the 12s. Specifically, the annular extrusion port 41 has an outer annular flow path 411 and a gas passage 412 provided inside the annular flow path 411, and the linear extrusion port 42 is provided at both ends of the annular flow path 411. .. Each of the gas passages 412 is connected to an external gas source 43 and continues to supply gas to the gas passages 412 during the processing step.

FIG. 5 is an explanatory diagram of the processing flow of the present invention. First, the material of the cable covering material described above is supplied to the hopper of the biaxial or uniaxial screw mixer, and the plastic material is mixed. Is sent to the blow extrusion head 40 and extruded into the cable covering material 10 having a plurality of tubular structures. Here, as shown in FIG. 5, when the mixed materials are extruded from the blow extruder die 40, these hot melt materials are extruded along the annular extrusion port 41 and the linear extrusion port 42. The connecting portion 14 connecting the plurality of tubular portion spaces 12 and each tubular portion space 12 is formed, and during the process, the gas passage 412 is formed by continuously blowing gas toward the plurality of tubular portion spaces 12. The first layer 11 and the second layer 13 are prevented from sticking to each other, and the extruded cable covering material 10 is rapidly transferred to the cooling step, and is cooled by using, for example, a water bath 44. Then, the cable covering material 10 can be formed to form a plurality of tubular structures, and the connecting portion 14 is fused to maintain a tightly coupled state.

As shown in FIG. 5, in the above-mentioned cooling design of the water bath 44 of the present invention, the extruded high temperature cable covering material 10 is put into excessively deep water other than being put into the pool of the water bath 44. The cable covering material 10 is preferably maintained at the water surface position of the water bath 44 in order to prevent the plurality of tubular portion spaces 12 that originally maintained the hollowness from being re-adhered or deformed due to high water pressure. At the same time, the spray device 45 can be used to spray cold water toward the surface to lower the temperature, thus achieving the effect of lowering the temperature and further avoiding the problem of deformation due to water pressure. can.

The plurality of tubular component spaces 12 of the present invention are suitable so that the width and spacing thereof are the same or different by adjusting the dimensions and spacing of the annular extruder outlet 41 and the linear extruder outlet 42. However, the present invention is not limited to this. Similarly, the thicknesses of the first layer 11, the second layer 13, and the joint portion 14 can be appropriately designed to be the same thickness or different thicknesses.

Next, the cable covering material 10 after cooling uses a roller machine 46, on which the upper roller 461 and the lower roller 462 can sandwich the cable covering material 10 with each other and roll the cable covering material 10 flat and smooth. The 461 and 462 are maintained at regular intervals, taking care not to crush the plurality of tubular space 12 to maintain a hollow state, and finally to be rolled up, stored, transported, or subsequently. Shift to a process that meets product requirements such as cutting.

<Validation test of cable covering material>
Next, the performance test results of each embodiment of the present invention in Table 1 are referred to. Here, the coefficient of friction test used the ASTM D1894 test standard.

From Table 1, all embodiments provided by the present invention all have at least an antistatic grade surface resistance value (the surface resistance value of the product reaches 10 5 to 12 ohms, i.e., an antistatic grade. With the specifications of).

Further, the above-mentioned preferred embodiment of the cable covering material 10 provided by the present invention preferably reaches 5 million times or more, and more preferably 20 million times or more after undergoing a fatigue resistance test.

Similarly, in order to simplify the representation of the technical disclosure of the present invention and aid in understanding of one or more embodiments of the present invention, in the description of the embodiments of the present invention described above, a variety of features will be incorporated into one embodiment. It may be incorporated into the drawings or description thereof, but it should be noted that such a disclosure method does not mean that the required features of the protected object claimed by the present invention are more than those listed in the examples. sea bream. In fact, on the premise that the effect of the present invention is not impaired, the features in the claims may be less than all the features in one embodiment of the above disclosure.

Although some examples use numbers to represent the quantity of ingredients and attributes, the numbers used in the description of these examples are "about", "almost", or "almost" in some examples. It should be understood that it is modified by the modifier "substantially". Unless otherwise stated, "about," "almost," or "substantially" means that the numbers listed allow ± 20% variation. Correspondingly, in some embodiments, the numerical parameters used in the specification and requirements are both approximations, which vary depending on the characteristics required by the individual embodiments. can do. In some embodiments, the numerical parameters should take into account a given number of significant digits and employ a general method of holding digits. The numerical ranges and parameters used to confirm the breadth of the range in some embodiments of the present invention are approximate values, but in the specific embodiments, the setting of these numerical values is within the feasible range. Is as accurate as possible.

Each patent (including utility model, design), patent application, patent application publication and other materials that can be cited in the present invention, such as texts, books, manuals, publications, documents, etc., are all in the book. Incorporated as a reference in the device. Application history documents that are inconsistent or inconsistent with the content of the present invention are excluded, as are documents that limit the broadest scope of the claims of the present invention (those that are added to the present or subsequent invention). If the description, definition, and / or use of terms in the supplementary material of the present invention is inconsistent or inconsistent with the description of the present invention, the description, definition, and / or use of the term shall be prioritized. Should be noted.

Finally, the embodiments described above merely illustrate the principles of the embodiments of the present invention, and other modifications may also fall within the scope of the present invention. Therefore, it is an example and is not limited, and the alternative configuration of the embodiment of the present invention can be regarded as consistent with the teaching of the present invention. Similarly, the examples of the present invention are not limited to the examples explicitly described in the present invention.

10 Cable covering material 11 1st layer 12 Tubular space 13 2nd layer 14 Coupling 20 Wire / cable
S31 Mixing process S32 Extrusion process S33 Cooling molding process S34 Roll forming process S35 Winding process 40 Blow extrusion molding head 411 Circular flow path 412 Gas passage 42 Linear extrusion port 43 Gas source 44 Water bath 45 Spraying device 46 Roller 461 Top roller 462 Lower roller

Claims (7)

Used in the manufacture of cable coverings
With a biaxial or uniaxial screw mixer,
Blow extrusion head and
Cooling device and
In preparation for being placed next to each other in order
A plurality of annular extrusion ports and linear extrusion ports are communicated with each other at intervals, and the annular extrusion port has an outer annular flow path and a gas passage provided in the annular flow path, and both ends of the annular flow path. Each of the linear extrusion ports is provided, each of the gas passages is connected to an external gas source, and the gas continues to be supplied to the gas passage at the processing stage.
The cable covering material includes a first layer having a sheet structure and a second layer having a sheet structure, and between the first layer and the second layer, a plurality of tubular space is formed by inflating the inside. The second layer and the first layer are fused and bonded to each other in a plane at intervals, and both sides of the first layer and the second layer of each of the plurality of tubular space are melted to each other. A device for manufacturing cable coverings that forms joints. The cooling device includes a water bath and a spray device, the cable covering material is maintained on the water surface of the water bath, and the spray device sprays water toward the surface of the cable covering material according to claim 1. The cable covering material manufacturing equipment described. The device for manufacturing a cable covering material according to claim 1, wherein the cooling device further includes a roller machine, and the roller machine includes an upper roller and a lower rotor that sandwich the cable covering material and roll it flat and smooth. The first layer, which is a sheet structure,
The second layer, which is a sheet structure,
Equipped with
Between the first layer and the second layer, the inside is inflated to form a plurality of tubular space.
The second layer and the first layer are melt-bonded to each other in a plane at intervals, and both sides of the first layer and the second layer of each of the plurality of tubular space are melted to each other to form a bonded portion. Cable covering material to form. The cable covering material according to claim 4, wherein the materials of the first layer and the second layer are a thermoplastic polyester elastic body or a fluorine-containing resin. The cable covering material according to claim 4 or 5, wherein the cross section of the plurality of tubular space is circular, rectangular, oval or rectangular. The cable covering material according to claim 4 or 5, wherein the cross-sectional shape of each tubular portion of the plurality of tubular portion spaces is different.

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