JP5514584B2 - Composite cable and manufacturing method thereof - Google Patents

Description

  The present invention relates to a composite cable formed by joining adjacent coatings together by heat fusion. Moreover, it is related with the manufacturing method of this composite cable.

  The flat cable disclosed in the following Patent Documents 1 and 2 is manufactured by thermally fusing together the coverings of adjacent covered wire rods. As a method of thermal fusion, in the case of the following Patent Document 1, fusion is performed by pressing the coatings in a high temperature state immediately after being extruded from the extruder, thereby integrating them. . On the other hand, in the case of the following Patent Document 2, the contact surface between the coatings is irradiated with a laser beam to be fused and thereby integrated.

JP 2001-345021 A JP 2001-310391 A

  In each of the heat fusion methods in the above-described prior art, there is a possibility that they are integrated in a strong fusion state. When integrated in a strong fusion state, it is difficult to separate, and there is a risk that the coating may be broken during separation. For example, when one of the adjacent coatings is thick and the other is thin, the tearing is in a state where the coating on the thin side adheres to the coating on the thick side.

  Patent Document 2 also discloses a method of integrating with an adhesive. Since the adhesive uses a solvent, it can be said that it is not an environmentally friendly method.

  The present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide a composite cable that can be easily separated and can prevent a coating breakage at the time of separation, and a manufacturing method thereof.

Composite cable of the present invention according to claim 1, wherein has been made to solve the above described problems is the composite cable formed by combining the coating adjacent at heat-sealing part formed by heat fusion, the heat wearing part, and one coating of the coating covering the temperature adjacent said 90 ° C. to 10 ° C., you formed by contacting the other coating of the adjacent coating of the coating temperature is 230 ° C. to 160 ° C. It is characterized by that.

Moreover, the manufacturing method of the composite cable of this invention of Claim 2 made | formed in order to solve the said subject is a manufacturing method of the composite cable formed by couple | bonding adjacent coating | covers by heat fusion, One coating | coated temperature The one coating is made into a low temperature body, the other coating temperature is made higher than the one coating, and the other coating is made into a high temperature body, and the low temperature body and the high temperature body seen containing a step of integrating by contacting them in the state, and the addition to the one 90 ° C. to 10 ° C. the coating temperature, characterized in that said other coating temperature and 230 ° C. to 160 ° C. .

  According to the present invention having the above-described features, one of the adjacent coatings is made lower in temperature than the other coating temperature. One side of the coating is a low temperature body and also a cooling body. On the other hand, the other coating side is a high-temperature body, and also becomes a fused body. The heat fusion part is formed by bringing a low temperature body (cooling body) into contact with a high temperature body (fusion body), and a fusion state is instantaneously formed by two coatings having a temperature difference. For this reason, it is not integrated in a strong fusion state.

  According to the present invention, since one is a low-temperature body, even if a pressing force is applied to the low-temperature body, a defect caused by the force does not occur in the low-temperature body. Therefore, it is good and easy to integrate the low temperature body by bringing it into contact with the high temperature body. ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to manufacture easily with the installation facilities (tool), such as a general roll.

  In the present invention, the reason why the coating temperature of one of the low-temperature bodies is set to 90 ° C. to 10 ° C. is that if the temperature falls below 10 ° C., there is a possibility that a predetermined adhesion force cannot be secured. Further, if the temperature exceeds 90 ° C., the coating may be broken during the separation. On the other hand, the reason for setting the other coating temperature of the high temperature body to 230 ° C. to 160 ° C. is that if the temperature falls below 160 ° C., there is a possibility that a predetermined adhesion force cannot be secured. Further, if the temperature exceeds 230 ° C., the coating may be broken during the separation.

  According to the present invention described in claim 1, it is possible to provide a composite cable that can easily separate the coatings and can prevent the coating from being broken during the separation. There is an effect.

  According to the second aspect of the present invention, there is provided a method for manufacturing a composite cable that can facilitate separation of coatings and can also prevent breakage of the coating during separation. There is an effect that can be.

According to the second aspect of the present invention, there is an effect that it is possible to provide a temperature range in which a predetermined adhesion force can be secured and a temperature range in which the coating breakage at the time of separation can be prevented. .

It is a perspective view which shows the composite cable of this invention. It is explanatory drawing which shows the manufacturing method of the composite cable of this invention.

  Hereinafter, an embodiment will be described with reference to the drawings. FIG. 1 is a perspective view showing a composite cable of the present invention. FIG. 2 is an explanatory view showing the method of manufacturing the composite cable of the present invention.

  In FIG. 1, reference numeral 1 indicates the composite cable of the present invention. In this embodiment, the composite cable 1 is formed by joining different types of the first cable 2 and the second cable 3 by heat fusion. By pulling the terminal so as to be separated, the terminal can be separated from the bonded portion by heat fusion. Separation at the terminal can be performed quickly without using a special tool or the like, and can be performed without causing coating breakage. A joint portion by heat fusion is formed as a heat fusion portion 4.

  The first cable 2 is positioned as a fusion body. When the second cable 3 is pressed against the first cable 2 and brought into contact with the first cable 2, a heat fusion part 4 is formed. In addition, the first cable 2 is positioned as a high-temperature body, and at least a part to be formed with the heat-sealing part 4 is at a higher temperature than the same part of the second cable 3. Specifically, the sheath 7 described later (corresponding to the other coating described in the claims) has a high coating temperature of 230 ° C. to 160 ° C. The first cable 2 is configured such that the second cable 3 is pressed in a high temperature state where the coating temperature is in the range of 230 ° C to 160 ° C. The second cable 3 is fused.

  In this embodiment, a known CV cable is used for the first cable 2 (assumed to be an example. Other examples will be described later). The first cable 2 includes a conductor 5, an insulator 6 that covers the outside of the conductor 5, and a sheath 7 (corresponding to the other coating described in the claims) that covers the outside of the insulator 6. Has been. The sheath 7 is a coating of the outermost layer, and is formed by extruding a CV sheath from the extruder 8. The sheath 7 is configured to receive the pressing of the second cable 3 in a covering temperature state of 230 ° C. to 160 ° C. immediately after the extrusion from the extruder 8.

  The 2nd cable 3 is positioned as a cooling body, and when it contacts so that it may be pressed with respect to the 1st cable 2, the heat sealing | fusion part 4 will be formed. The second cable 3 is positioned as a low-temperature body, and the portion to be formed with the heat-sealed portion 4 is configured to be cooler than the same portion of the first cable 2. Specifically, the sheath 10 described later (corresponding to one of the coatings described in the claims) has a low coating temperature of 90 ° C. to 10 ° C. The second cable 3 is pressed against the first cable 2 in a low temperature state where the coating temperature is in the range of 90 ° C to 10 ° C. And if it contacts so that it may be pressed, it will fuse | fuse to the 1st cable 2. FIG.

  In this embodiment, a known LAN cable is used as the second cable 3 (assumed to be an example. Other examples will be described later). The second cable 3 includes a plurality of twisted strands 9 formed by twisting two insulated wire cores made of a conductor and an insulator, and a sheath 10 that covers the outside of the plurality of twisted strands 9 (claims) Equivalent to one of the coatings described in the above-mentioned range). The sheath 10 is the outermost layer coating. The second cable 3 manufactured before the first cable 2 is used here, and the heat-sealed portion 4 in the first cable 2 is formed at a coating temperature of 90 ° C. to 10 ° C. It can be pressed against the target part.

  The reason why the coating temperature is set to 230 ° C. to 160 ° C. and 90 ° C. to 10 ° C. as described above is to ensure a predetermined adhesion and to prevent the coating from being broken during separation.

  In FIG. 2, reference numeral 8 indicates a known extruder. The extruder 8 is provided with a head 11. A cooling tank (not shown) is disposed on the downstream side of the extruder 8. Reference numerals 12 and 13 indicate known rolls. The rolls 12 and 13 are disposed in the vicinity of the head 11.

  In the above-described equipment configuration, the conductor 5 (see FIG. 1) and the wire in the state of the insulator 6 are sent from the upstream side of the extruder 8 to the head 11 (send in the direction of the arrow P), and then to the outside of the insulator 6 When the CV sheath is pushed out, the first cable 2 is manufactured. The first cable 2 is integrated with the second cable 3 before entering a cooling tank (not shown), that is, in a high temperature state where the sheath 7 is at a high temperature. The second cable 3 is manufactured in advance in a separate process, and after being sent in the same direction as the feeding direction of the first cable 2 (the direction of the arrow P), the direction is changed by the roll 12, and It is pressed against the first cable 2 by the roll 13 (pressed in the direction of arrow Q). The first cable 2 and the second cable 3 are fused and integrated by the above pressing.

  The heat fusion part 4 formed by heat fusion is instantaneously formed by two coatings having a temperature difference. In such a heat fusion part 4, it is not integrated in a strong fusion state. If it is not integrated in a strong fusion state, the first cable 2 and the second cable 3 can be easily separated during terminal processing. Moreover, it is possible to prevent the coating from being broken during the separation.

  When the first cable 2 and the second cable 3 are integrated, the production of the composite cable 1 is completed. The composite cable 1 enters a cooling tank (not shown) and is cooled, and thereafter is wound by a winder (not shown).

  Of the first cable 2 and the second cable 3, the composite cable 1 is such that the first cable 1 is a high-temperature body (specifically, the sheath 7 is a high-temperature body), and the second cable 3 is a low-temperature body (specifically, the sheath 10). Therefore, even if a pressing force is applied to the second cable 3, which is a low temperature body, a defect caused by the force occurs not only in the second cable 3 but also in the first cable 2. There is nothing. Therefore, it can be seen that the manufacture of the composite cable 1 is good and easy. As can be seen from FIG. 2, the composite cable 1 can be easily manufactured with a general equipment (tool) for pressing such as a roll 13.

  Needless to say, if the composite cable 1 is used and positioned as a low-temperature body, it can be integrated with a new high-temperature body (not shown).

  In the above description, the first cable 2 as the high-temperature body and the second cable 3 as the low-temperature body are the CV cable and the LAN cable, but are not limited to these combinations, and the following high-temperature body and low-temperature body. It may be a combination with. That is, (1) high temperature body: combination of VVF and low temperature body: IV, (2) high temperature body: combination of VVF and low temperature body: VVF, (3) combination of high temperature body: CV and low temperature body: IV, (4) High temperature body: combination of halogen-free flame retardant cable and low temperature body: halogen-free flame retardant cable, (5) High temperature body: combination of polyethylene cable and low temperature body: polyethylene cable, (6) High temperature body: VVF Low temperature body: Combination with EM-EEF, (7) High temperature body: Combination of EM-EEF and low temperature body: IV, etc. The combination shall be free.

  Next, the characteristic value of the composite cable 1 described with reference to FIGS. 1 and 2 will be described. Table 1 shows Examples 1 to 4 related to the composite cable 1 and Comparative Examples 1 to 8 related to the composite cable for comparison. In the composite cable 1 according to Examples 1 to 4 and the composite cable according to Comparative Examples 1 to 8, the first cable 2 is a combination of a CV cable and the second cable 3 is a combination of a LAN cable. The following description refers to FIG. 1 and Table 1.

  In Example 1, the covering temperature of the sheath 7 in the first cable 2 is set to 230 ° C., and the second cable 3 having the sheath 10 having a covering temperature of 90 ° C. is pressed against this and integrated by heat fusion. This is a composite cable 1.

  In Example 2, the sheathing temperature of the sheath 7 in the first cable 2 is set to 160 ° C., and the second cable 3 having the sheath 10 having a coating temperature of 90 ° C. is pressed against this, and integrated by thermal fusion. This is a composite cable 1.

  In Example 3, the covering temperature of the sheath 7 in the first cable 2 is 230 ° C., and the second cable 3 having the sheath 10 having a covering temperature of 10 ° C. is pressed against this and integrated by heat fusion. This is a composite cable 1.

  In Example 4, the covering temperature of the sheath 7 in the first cable 2 is set to 160 ° C., and the second cable 3 having the sheath 10 having a covering temperature of 10 ° C. is pressed against this and integrated by heat fusion. This is a composite cable 1.

  In Comparative Example 1, the sheath temperature of the first cable (hot body) is set to 230 ° C., and the second cable (cold body) having a sheath with a sheath temperature of 9 ° C. is pressed against this by heat fusion. It is a composite cable that is integrated.

  In Comparative Example 2, the sheath temperature of the first cable (high-temperature body) is set to 160 ° C., and the second cable (low-temperature body) having a sheath having a coating temperature of 9 ° C. is pressed against this by heat fusion. It is a composite cable that is integrated.

  In Comparative Example 3, the sheath temperature of the first cable (hot body) is set to 230 ° C., and the second cable (low temperature body) having a sheath having a sheath temperature of 91 ° C. is pressed against the sheath temperature. It is a composite cable that is integrated.

  In Comparative Example 4, the sheath temperature of the first cable (high-temperature body) is set to 160 ° C., and the second cable (low-temperature body) having a sheath with a coating temperature of 91 ° C. is pressed against this by heat fusion. It is a composite cable that is integrated.

  In Comparative Example 5, the sheath temperature of the first cable (high-temperature body) is set to 231 ° C., and the second cable (low-temperature body) having a sheath having a coating temperature of 90 ° C. is pressed against this by heat fusion. It is a composite cable that is integrated.

  In Comparative Example 6, the sheath temperature of the first cable (high temperature body) was set to 159 ° C., and the second cable (low temperature body) having a sheath having a coating temperature of 90 ° C. was pressed against this, and heat fusion was performed. It is a composite cable that is integrated.

  In Comparative Example 7, the sheath temperature of the first cable (high-temperature body) is set to 231 ° C., and the second cable (low-temperature body) having a sheath with a coating temperature of 10 ° C. is pressed against this by heat fusion. It is a composite cable that is integrated.

  In Comparative Example 8, the sheath temperature of the first cable (high temperature body) is set to 159 ° C., and the second cable (low temperature body) having a sheath with a coating temperature of 10 ° C. is pressed against this by heat fusion. It is a composite cable that is integrated.

  As an evaluation, if the adhesion (see * 1 in the table) by thermal fusion of the first cable 2 and the second cable 3 is 5 N or more, “◯” as a good evaluation shall be given. On the other hand, when the adhesion by heat fusion is less than 5N, “x” is given as a bad evaluation. In addition, as an evaluation during terminal processing (see * 2 in the table), if the first cable 2 and the second cable 3 are not broken when the first cable 2 and the second cable 3 are separated, “○” is given as a good evaluation. . On the other hand, when covering breakage occurs, “x” as a bad evaluation is attached.

  The composite cable 1 of Examples 1 to 4 is given two “◯” as good evaluations. It can be seen that the adhesion force of the first cable 2 and the second cable 3 by heat fusion is 5 N or more, and this adhesion force is good. Moreover, since the coating tear does not occur at the time of separation of the first cable 2 and the second cable 3, it can be seen that the adhesion force regarding separation is also good.

  On the other hand, the composite cables of Comparative Example 1 and Comparative Example 2 are marked with “x” as a bad evaluation regarding the adhesion force of the first cable and the second cable by heat fusion. This is because the coating temperature of the second cable (cold body) is 9 ° C., which is lower than 10 ° C. From the result, it can be seen that the fusion is weak. In the case of the composite cables of Comparative Example 1 and Comparative Example 2, the adhesion for separation is marked with “◯” as a good evaluation.

  In the composite cables of Comparative Example 3 and Comparative Example 4, the coating is broken when the first cable and the second cable are separated, and “x” is given as bad evaluation. This is because the coating temperature of the second cable (cold body) is 91 ° C. exceeding 90 ° C. From the results, it can be seen that there is strong fusion. In the case of the composite cables of Comparative Example 3 and Comparative Example 4, the adhesion due to thermal fusion is marked with “◯” as a good evaluation.

  In the composite cables of Comparative Example 5 and Comparative Example 7, coating breakage occurs when the first cable and the second cable are separated, and “x” is given as bad evaluation. This is because the covering temperature of the first cable (hot body) is 231 ° C. exceeding 230 ° C. From the results, it can be seen that there is strong fusion. In the case of the composite cables of Comparative Example 5 and Comparative Example 7, “○” is attached as a good evaluation for the adhesion by heat fusion.

  The composite cables of Comparative Example 6 and Comparative Example 8 are marked with “x” as a bad evaluation regarding the adhesion strength of the first cable and the second cable by heat fusion. This is because the coating temperature of the first cable (hot body) is 159 ° C. below 160 ° C. From the result, it can be seen that the fusion is weak. In the case of the composite cables of Comparative Example 6 and Comparative Example 8, the adhesion for separation is indicated by “◯” as a good evaluation.

Above, summary of the present invention, the invention of the Sea scan 7, 10 adjacent to lower than the coating temperature of the other sheath 7 covering the temperature of one of the sheath 10. One seal 10 side is a low-temperature body and also a cooling body. On the other hand, the side of the other sheath 7 is a high-temperature body and also becomes a fused body. The heat fusion part 4 is formed by bringing a low temperature body (cooling body) into contact with a high temperature body (fusion body), and a fusion state is instantaneously formed by two coatings having a temperature difference. For this reason, it is not integrated in a strong fusion state.

  It goes without saying that the present invention can be variously modified without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 1 ... Composite cable 2 ... 1st cable 3 ... 2nd cable 4 ... Heat-sealing part 5 ... Conductor 6 ... Insulator 7 ... Sheath (other covering)
8 ... Extruder 9 ... Twisted wire core 10 ... Sheath (one coating)
11 ... Head 12, 13 ... Roll

Claims (2)

In a composite cable formed by bonding adjacent coatings at a heat fusion part formed by heat fusion,
The heat fusion portion, and one coating of the coating covering the temperature adjacent said 90 ° C. to 10 ° C., is brought into contact with the other coating of the adjacent coating of the coating temperature is 230 ° C. to 160 ° C. composite cable, wherein you formed. In the manufacturing method of the composite cable formed by bonding adjacent coatings by heat fusion,
Lowering one coating temperature and making the one coating a low temperature body,
Making the other coating temperature higher than the one coating, and making the other coating a hot body,
Bringing them into contact with each other in the state of the low-temperature body and the high-temperature body, and
Only including,
A method for producing a composite cable, wherein the one coating temperature is 90 ° C to 10 ° C, and the other coating temperature is 230 ° C to 160 ° C.

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