KR20230092314A - A production method of a cable covering pod - Google Patents

Abstract

The manufacturing method of the novel cable covering pod is manufactured by a special manufacturing equipment, which equipment includes a twin screw or single screw kneader; blow extrusion die head; and a cooling device; Here, a plurality of annular extrusion ports and a linear extrusion port are spaced apart from each other in the blow extrusion die head, and the annular extrusion port has an external annular flow channel and an internal gas channel, and both ends of the annular flow channel have the linear extrusion port. Each extrusion port is installed, and each gas channel is connected to an external gas source to continuously supply gas to the gas channel in the processing step. The covering pod is integrally molded with only a single layer, so that the manufacturing process is simple and low-cost, and the blow extrusion die head machine has a fast and continuous production process, so that the covering pod has a single-layer structure and more cost advantages in the manufacturing process. This helps reduce the cost of consumables for processing equipment.

Description

Manufacturing method of cable covering pod {A PRODUCTION METHOD OF A CABLE COVERING POD}

The present invention relates to a covering pod, in particular, used for a working machine, an electronic machine, an industrial robot, a transport machine, etc., and an electric cable, an optical fiber cable, and a fluid supplying electricity, liquid, or gas to a moving machine or a moving part of such a machine. It relates to a covering pod for protecting and inducing abrasion resistance and bending resistance of a flexible cable such as a supply hose or an external covering of a hose, a device thereof, and a manufacturing method thereof.

In general, when a moving object such as a working machine, processing equipment, or conveying device is connected to a portion of an electric cable and moves, excessive twist or tension occurs at the position of the electric cable, resulting in damage to the electric cable or deterioration of appearance. A plurality of electric lines and cables must be inserted and installed in one equipment device. During the movement period, it is necessary to ensure that these electric lines and cables do not interfere with each other or even get tangled and damaged. should be covered to ensure that the aforementioned problems do not occur.

However, current electric wire and cable covering pods are often too thick and do not bend significantly, and abrasion resistance and durability do not meet the standard, so frequent replacement when necessary takes a lot of time and material cost in the processing process, so urgent improvement Needs to be. At the same time, how to provide cost-competitive products in the production process is also a major challenge in the art.

The purpose is to provide a method for manufacturing a cable covering pod structure that solves the problem of undesirable abrasion resistance and durability without being greatly bent due to the excessive thickness of the covering pod of the conventional electric wire or cable.

In order to achieve the above object, the present invention provides a manufacturing method of a cable covering pod structure, which is manufactured by a manufacturing machine of a cable covering pod structure, wherein the manufacturing machine of a cable covering pod structure is installed adjacently in sequence,

a twin screw or single screw kneader for kneading the material of the cable covering pod;

a blow extrusion die head extruding the kneaded cable covering pod material to form the cable covering pod structure; and

including a cooling device;

A plurality of annular extrusion ports and a linear extrusion port are spaced apart from each other in the blow extrusion die head, and the annular extrusion port has an external annular flow channel and an internal gas channel, and both ends of the annular flow channel are provided with the linear extrusion port. A port is provided respectively, and each gas channel is connected to an external gas source to continuously supply gas to the gas channel in the processing step;

The cable covering pod structure,

a first layer having a sheet structure;

a second layer having a sheet structure;

a plurality of tubular portion spaces formed by alternately protruding the first layer and the second layer to the surface and to the inside; and

The second layer and the first layer are melted and bonded in a plane at intervals, and both sides of the first layer and the second layer in each of the plurality of tubular part spaces are melted to each other to include a coupling portion formed.

Here, the cooling device includes a water bath and a spray device, and the cable covering pod structure is held only at the full surface position of the water bath, and the spray device sprays water on its surface.

Here, the cooling device further includes a rolling machine including an upper roller and a lower roller, wherein the upper roller and the lower roller are clamped together to press the cable covering pod structure flat and smooth.

Here, the materials selected for the first layer and the second layer include thermoplastic polyester elastomer, polychlorotrifluoroethylene or polytetrafluoroethylene, an antiblocking agent or slip agent, an antistatic agent, and talc powder.

Here, cross sections of the plurality of tubular space include circular, rectangular, elliptical or rectangular shapes.

Here, the shape of each tubular section cross section of the plurality of tubular section spaces is different.

According to the above description, the present invention has the following advantages and advantageous effects.

One. In the present invention, by extruding using a special extrusion die head, the covering pod is integrally molded with only a single layer, making the manufacturing process simple and low-cost, and the blow extrusion die head device has a fast and continuous manufacturing process, and the covering pod is single-layered. It helps to reduce the cost of consumables of processing equipment by allowing them to have more cost advantages in the structure and manufacturing process.

As a result of testing, the cable covering pod structure provided by the present invention has a fatigue resistance performance of more than 5 million cycles, even more than 20 million cycles, compared to the unfavorable durability and abrasion resistance of the conventional cable covering pod structure of the present invention. It provides a beneficial effect that helps reduce the cost of consumables for processing equipment.

The present invention is further described in the form of exemplary embodiments, which will be explained in detail with reference to the accompanying drawings. These embodiments are non-limiting, and like reference numerals indicate like structures in these embodiments. here,
1 is a schematic diagram of a preferred embodiment of a cable covering pod structure of the present invention.
2 is a schematic diagram of the use of a preferred embodiment of the cable covering pod structure of the present invention.
3 is a manufacturing flow chart of the cable covering pod structure of the present invention.
4 is a schematic view of the blow extrusion die head of the present invention.
5 is a schematic view of the manufacturing equipment and the entire manufacturing process of the present invention.

In order to more clearly describe the technical solutions of the embodiments of the present invention, the following briefly introduces drawings to be used in the description of the embodiments. In the following description, the drawings are merely some examples or embodiments of the present invention, and those skilled in the art can apply the present invention to other similar scenarios according to these drawings without the need to exert effort to create inventive step. It is self-evident that it can be done. Like reference numbers in the drawings indicate like structures or operations, unless otherwise apparent or specified in a language environment.

The words "one", "two", "first", "second" or "above" cited in the following description are used only for the purpose of more clearly and clearly explaining the components of the structure, and are absolute There is not a single meaning of the quantitative modifier. At the same time, it should be understood that “system”, “device”, “unit”, “component”, “member” and/or “module” as used herein means different assemblies, components, members, parts or assemblies at different levels. as a way to distinguish However, the word may be replaced by another expression if the other word can achieve the same purpose.

<Cable Covering Pod Structure>

Referring to FIG. 1, the cable covering pod structure 10 of the present invention includes a first layer 11 and a second layer 13, wherein the first layer 11 and the second layer 13 are all sheets and are melted and bonded in a plane at intervals, but some gap positions between the two sheets are not bonded so that a plurality of tubular space 12 formed protruding from the surface and inside are in a parallel configuration, and The first layer 11 and the second layer 13 between the subspaces 12 form a coupling part 14 in a plane, and the first layer 11 located in the coupling part 14 and The second layers 13 are melted and bonded to each other, and the coupling parts 14 are installed on both outer sides of the cable covering pod structure 10, respectively. In addition, the specific shape of the plurality of tubular spaces 12 may be any one of a circular cross section, a rectangular cross section, an elliptical cross section or a rectangular cross section, and the present invention is not limited thereto; In addition, since the number of installations for the plurality of tubular space 12 is basically one or more as a preferred embodiment of the present invention, it may be the number of insertable cables, optical fibers, and pipes, and avoiding mutual contact is It is what the present invention seeks to protect.

Referring to FIG. 2, when using the present invention, the user can pass an electric wire, cable 20, optical fiber, pipe, etc. connected to the machine socket through from the tubular space 12, and thus the present invention described above. It covers the outside of the electric wire and cable 20, and since the present invention uses a material with a smooth surface, the user can pass the electric wire and cable 20 through without interfering with the present invention. In addition, as shown in FIG. 2, through the tubular space 12 of a different cross-sectional shape, the present invention provides the most desirable mobility and convenience by passing the different electric wires, cables 20 or any combination according to user demand. to achieve its purpose.

<Cable Covering Pod Structural Materials>

In addition, the first layer 11 and the second layer 13 of the present invention are flexible materials, more preferably a material with a smooth surface and easy sliding, and at the same time, the surface electrical resistance of the material is at least an antistatic level reach the standard of Here, the material selected for the first layer 11 and the second layer 13 of the present invention may be thermoplastic polyester elastomer (TPEE), and polychlorotrifluoroethylene is included therein to increase surface smoothness. It is preferable to contain an antiblocking agent such as (PCTFE) or polytetrafluoroethylene (PTFE) and a slip agent. An antistatic agent may be added to increase the antistatic function, for example, cation types such as ammonium salts, quaternary ammonium salts, alkylimidazolines and alkylimidazoline salts; anionic types such as sodium alkyl sulfonates, phosphonates, phosphates; zwitterionic types such as alkyldihydroxyethylammonium hydantoins, N-alkylamino acid salts; non-ionic types such as tweens, fatty acid-ethylene oxide adducts, fatty alcohol-ethylene oxide adducts, alkylphenol-ethylene oxide adducts, and also some, such as talcum powder, without affecting the efficacy. A smooth filler may be added, and for actual formulation examples, see Table 1 below.

Example TPEE (DSM EM400) TPEE melt index
(MVR) Anti-blocking agent/
slip agent Daejeon
inhibitor talc
powder PBAT A 100phr 33
(230 ℃, 2.16 kg) PCTFE
3 phr 1 phr 5 phr -- B 100phr 33
(230 ℃, 2.16 kg) PCTFE
3 phr 1 phr 5 phr -- C 100phr 33
(230 ℃, 2.16 kg) PCTFE
3 phr 1 phr 5 phr D 100phr 33
(230 ℃, 2.16 kg) PCTFE
3 phr 1 phr 5 phr 10wt% E 100phr 33
(230 ℃, 2.16 kg) PCTFE
3 phr 1 phr 5 phr 20wt% F 100phr 33
(230 ℃, 2.16 kg) PCTFE
3 phr 3 phr 5 phr -- G 100phr 33
(230 ℃, 2.16 kg) PCTFE
3 phr 1.5 phr 5 phr --

<Apparatus and Method for Manufacturing Cable Covering Pod Structure> Referring to FIG. 3 , the method for manufacturing the cable covering pod structure 10 of the present invention preferably includes the following steps.

S31) Kneading;

S32) Extrusion;

S33) cooling and forming;

S34) rolling and forming (optional); and

S35) Winding (optional).

First, for the above-described kneading step of the present invention, the plastic kneading manufacturing process was performed with a twin screw or single screw kneader using the formulation provided in Table 1, and the optimum kneading effect was achieved by using multi-stage temperature control technology during kneading. For example, after kneading at a multi-stage kneading temperature of 140-175-190-190-200-190-180-185-185-170-160-150 ° C, the sheet is extruded by the extrusion die head, and the sheet thickness is It is preferably 50 to 100 μm, for example 60 μm.

Subsequently, plastic kneading is performed with the above-mentioned twin screw or single screw kneader, and then the blow extrusion die head 40 is communicated to further form. As shown in FIG. 4, the blow extrusion die head 40 has a plurality of annular extrusion ports 41 and a linear extrusion port 42 in communication with each other at a distance to form the plurality of tubular portion spaces 12 and each tubular portion. Forming the coupling portion 14 connected to the space (12). Specifically, the annular extrusion port 41 has an external annular flow channel 411 and a gas channel 412 installed inside, and the linear extrusion port 42 is provided at both ends of the annular flow channel 411, respectively. installed Each gas channel 412 is connected to an external gas source 43 to continuously supply gas to the gas channel 412 during processing.

Referring to Figure 5, Figure 5 is a schematic diagram of the process flow of the present invention, first, the above-described cable covering pod structural material is put into the hopper of a twin screw or single screw kneader, and then plastic kneading is performed, and the kneaded plastic is blown It is transferred to the extrusion die head 40 and extruded into the cable covering pod structure 10 having a plurality of tubular structures. As shown in Fig. 5, when the kneaded material is extruded from the blow extrusion die head 40, the hot-melt material flows along the annular extrusion port 41 and the linear extrusion port 42 to the plurality of tubular portions. The space 12 and the coupling part 14 connected to each tubular space 12 are extruded, and in the process, the gas channel 412 continuously supplies gas to the plurality of tubular spaces 12. The first layer 11 and the second layer 13 formed by blowing are prevented from sticking to each other, and the extruded cable covering pod structure 10 is rapidly cooled by using a water bath 44 for cooling. penetration, the cable covering pod structure 10 is molded to form a plurality of tubular structures so that the coupling part 14 can maintain a melted and tightly coupled state.

As shown in FIG. 5 , the aforementioned water bath 44 cooling design of the present invention, in addition to putting the extruded high temperature cable covering pod structure 10 into the pool of the water bath 44, in too deep water Preferably, the cable covering pod structure 10 is installed in the water bath 44 in order to prevent the plurality of tubular spaces 12, which were originally hollowed by high water pressure, from being stuck or deformed again. It can be maintained only in the full water surface position, and at the same time, it is cooled by spraying low-temperature water on the surface with the spray device 45, which not only achieves a cooling effect but also prevents deformation due to water pressure.

The plurality of tubular spaces 12 of the present invention adjust the size and spacing of the annular extrusion port 41 and the linear extrusion port 42 to adaptively adjust their width and spacing to the same width or different widths. can be designed and the present invention is not limited thereto. In addition, similarly, the thicknesses of the first layer 11, the second layer 13, and the coupling portion 14 may be appropriately designed to have the same thickness or different thicknesses.

Subsequently, the cooled cable covering pod structure 10 may be formed by using a rolling machine 46 that flatly and smoothly compresses the cable covering pod structure 10 by clamping the upper roller 461 and the lower roller 462 with each other. However, it should be noted that the upper and lower rollers 461 and 462 maintain a constant interval and pressurize the plurality of tubular spaces 12 so that they cannot maintain a hollow shape, and lastly stored, transported, or even subsequent It is wound for product demand processes such as cutting.

<Cable Covering Pod Structure Verification Test>

Next, refer to the performance test results of each embodiment of the present invention in Table 2. The coefficient of friction here is tested using the ASTM D1894 test standard.

Example/Comparative Example static coefficient of friction dynamic coefficient of friction Surface Resistance (Ω) A 1.354 ± 0.036 1.083 ± 0.032 4.48 × 10 ¹⁴ B 0.829 ± 0.016 0.732 ± 0.013 2.87 × 10 ¹⁵ C 0.853 ± 0.063 0.751 ± 0.045 1.72 × 10 ¹⁵ D 0.937 ± 0.021 0.799 ± 0.015 4.58 × 10 ¹⁴ E 0.829 ± 0.026 0.696 ± 0.010 7.24 × 10 ¹⁴ F 0.532 ± 0.038 0.422 ± 0.026 2.93 × 10 ¹¹ G 0.516 ± 0.020 0.441 ± 0.018 6.22 × 10 ¹⁴ Comparative Example PTFE Material 0.524 ± 0.145 0.322 ± 0.017 1.28 × 10 ¹³

As shown in Table 2, all embodiments provided by the present invention have at least an antistatic level of surface resistance (when the surface resistance of the product reaches 10 to 12 ohms, that is, antistatic level standards are met) In addition, the above-described preferred embodiment of the cable covering pod structure 10 provided in the present invention can reach a fatigue resistance performance test result, preferably 5 million or more cycles, more preferably 20 million cycles or more. there is.

Similarly, various features in the foregoing descriptions of embodiments of the present invention may be incorporated into a single embodiment, drawing, or description thereof to simplify the presentation of the disclosed technology and facilitate understanding of one or more embodiments of the invention. It should be noted that there are However, this method of disclosure does not mean that the features required for the subject matter claimed by the present invention are more than the features mentioned in the embodiments. In practice, the features of the claims may be less than all features of a single embodiment disclosed above, provided that the efficacy of the invention is not lost.

Some examples use numbers to describe the number of components, attributes, and it should be understood that numbers to describe these examples are in some examples modified using the modifiers "about", "approximately" or "approximately". . Unless otherwise stated, “about”, “approximately” or “approximately” means that the number allows for a variation of ±20%. Correspondingly, in some embodiments, the values used in the specification and claims are approximations, and the approximations may vary depending on the characteristics needed for an individual embodiment. In some embodiments, the value parameter should take into account the specified significant digits and adopt a general number retention method. In some embodiments of the present invention, the value fields and parameters used to ascertain the width of the range are approximations, but in specific embodiments the setting of these values is as accurate as possible within the realizable range.

The entire content of each patent, patent application, patent application publication, and other material cited in the text of the present invention, such as articles, books, specifications, publications, documents, etc., is incorporated herein by reference. Except for application history files that do not match or conflict with the content of the present invention, files (now or later added to the present invention) which limit the broadest scope of the claims of the present invention are also excluded. It should be noted that if there is any inconsistency or conflict between the description, definition and/or use of terms in the accompanying materials herein and the description in the present invention, the description, definition and/or use of the terms in the present invention shall prevail. do.

Finally, it should be understood that the embodiments described in the present invention are intended to illustrate the principles of the embodiments of the present invention. As other variations may also fall within the scope of this invention, by way of non-limiting example, alternative configurations of embodiments of this invention may be considered consistent with the teachings of this invention. Correspondingly, the embodiments of the present invention are not limited to the embodiments explicitly introduced and described in the present invention.

10: cable covering pod structure 11: first layer
12: coronal space 13: second layer
14: coupling part 20: electric wire, cable
S31-S35: Step 40: Blow Extrusion Die Head
41: annular extrusion port 411; annular flow channel
412; Gas channel 42: linear extrusion port
43: gas source 44: water bath
45: spray device 46: rolling machine
461: upper roller 462: lower roller

Claims (6)

A method of manufacturing a cable covering pod structure, comprising:
manufactured by a manufacturing device of a cable covering pod structure, and the manufacturing equipment of the cable covering pod structure is installed adjacently in order;
a twin screw or single screw kneader for kneading the material of the cable covering pod;
a blow extrusion die head extruding the kneaded cable covering pod material to form the cable covering pod structure; and
Including a cooling device,
A plurality of annular extrusion ports and a linear extrusion port are spaced apart from each other in the blow extrusion die head, and the annular extrusion port has an external annular flow channel and an internal gas channel, and both ends of the annular flow channel are provided with the linear extrusion port. A port is provided respectively, and each gas channel is connected to an external gas source to continuously supply gas to the gas channel in the processing step;
The cable covering pod structure,
a first layer having a sheet structure;
a second layer having a sheet structure;
a plurality of tubular portion spaces formed by alternately protruding the first layer and the second layer to the surface and to the inside; and
The second layer and the first layer are melted and bonded in a plane at intervals, and a coupling portion formed by melting both sides of the first layer and the second layer in each of the plurality of tubular space spaces, cable covering A method of making a pod structure. According to claim 1,
manufacture of a cable covering pod structure, wherein the cooling device includes a water bath and a spray device, and the cable covering pod structure is maintained only at a full water surface position in the water bath, and the spray device sprays water on its surface. method. According to claim 1 or 2,
wherein the cooling device further includes a rolling machine including an upper roller and a lower roller, wherein the upper roller and the lower roller clamp each other to press the cable covering pod structure flat and smooth. According to claim 1 or 2,
The material of the first layer and the second layer formed of the cable covering pod material comprises a thermoplastic polyester elastomer, polychlorotrifluoroethylene or polytetrafluoroethylene, an antiblocking agent or slip agent, an antistatic agent and talc powder. , Manufacturing method of the cable covering pod structure. According to claim 1 or 2,
The method of manufacturing a cable covering pod structure, wherein the cross section of the plurality of tubular spaces includes circular, rectangular, elliptical or rectangular shapes. According to claim 1 or 2,
A method for manufacturing a cable covering pod structure, wherein the shape of each tubular section cross section of the plurality of tubular section spaces is different.

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