JPH0644660Y2 - Mold for branch part of cable with branch - Google Patents

Description

[Detailed description of the device] [Industrial applications]

The present invention relates to a branching part when a conductor of one or more electric wires is branched into a plurality of electric wire conductors, and in particular, a trunk line and a branching line are connected by compression connectors and fixed to respective escape parts and molded. A cable with a branch that can significantly reduce mold replacement time when molding and that can be molded for all cable sizes with a smaller number of molds compared to cable size types. The present invention relates to a branch part molding die.

[Prior art]

The power line is taken indoors from the outer wall of the building in each office building or household that uses electric power from the main line installed between the electric poles, and is distributed and wired to each room in this indoor. When constructing such office buildings and home buildings, power lines are embedded in the walls. In this wiring, the cables used are different, and the wiring positions of the cables are also different. The cable connection and terminal treatment in the indoor wiring of such a general house is performed by an electrician at a site such as in the ceiling, by cutting a plurality of cables to be connected to each other, peeling off the covering material of the terminal, and crimping the connector. After connecting each terminal by using a cable, etc., insulation treatment is performed. However, the site space such as the ceiling is small, and it takes more time than necessary to perform cable connection and wiring such as terminal treatment in such a narrow place, complete cable connection, terminal insulation. It was a cause of lack of stability of quality such as sex. Therefore, in recent years, in order to improve workability, a branched cable in which the cable connection is preassembled in advance has been developed. The basic structure of the branch portion of the preassembled cable with branch has a configuration as shown in FIG. That is, the branch portion 10 of the cable with branch
In the case of 0, the branch line 120 is connected to the trunk line 110, the branch portion between the trunk line 110 and the branch line 120 is fixed by the compression connector 130, and the vinyl mold 140 is covered over the compression connector 130. To cover the vinyl mold 140, as shown in FIG. 5, various sizes of various resin-molded cables,
Using a pair of vertically symmetrical molds 200, each of which has a dug 210 processed according to the size of the mold,
This is performed by setting the branch portion fixed by the compression connector 130 to 00. The set of this branch part to the mold 200 is
As shown in FIG. 5, the trunk line 110 and the branch line 120 are compressed into connectors.
Connection is made at 130, and fixing is performed on the respective escape portions 220 and 230, and then the upper and lower molds 200 are combined and resin-molded.

[Problems to be solved by the device]

However, in such a conventional die 200 for forming a branched portion of a cable with a branch, when the size of the cable or the size of the molded portion 140 of the branched portion of the cable changes,
It is necessary to prepare molds 200 of each type according to the size of the cable and the size of the mold part of the branch part of the cable, the number of molds 200 is very large, and the manufacturing cost is high. It has the problem of becoming expensive. In addition, a conventional mold 200 for molding the branch part of the cable with branch
In that case, since it is an integral molding die according to the size of the cable and the size of the mold part at the branch part of the cable, the weight of the die is heavy and it is very inconvenient to carry. have. Furthermore, the conventional mold 20 for molding the branch part of the cable with branch
In 0, when the size of the cable or the size of the molded part 140 at the branch part of the cable changes, the mold 200 is replaced according to the size of the cable or the size of the molded part 140 at the branch part of the cable. Therefore, it takes time to replace the mold 200 by changing the size of the cable. The present invention has been made in view of the above problems of the prior art, and the purpose thereof is to connect the trunk line and the branch line with a compression connector and fix them in the respective escape portions to mold them. With a branch that can significantly reduce the mold replacement time when molding and that can be molded for all cable sizes with a smaller number of molds compared to the type of cable size It is intended to provide a mold for forming a branched portion of a cable.

[Means for Solving the Problems]

In order to achieve the above object, a branch portion molding die for a branch cable according to the invention as set forth in claim 1 is provided with a mold groove for accommodating a connection branch portion in which a branch line is connected to a trunk cable and resin-molding it. A pair of cores, a pair of upper and lower trunk line side pressers provided with a trunk line cable holding groove which is adjacent to the end of the core line protruding side of the core and is formed in an arcuate cross section and communicates with the mold groove to hold down the trunk line cable; A trunk cable holding groove which is formed in an arcuate cross section adjacent to the branch line projecting side end and which communicates with the mold groove to hold the trunk cable and a branch wire holding groove which holds the branch wire branched and connected from the trunk cable. And a pair of upper and lower branch side wire retainers provided with a box, and a box-shaped insert to accommodate the cable escape portion on the contact side of the trunk side line retainer side and the branch side line retainer side. In order to achieve the above-mentioned object, the branch portion molding die of the cable with branch in the invention according to claim 2 is formed in a rectangular parallelepiped shape and has an upper surface. It is formed in an arcuate cross section and is provided with a trunk cable holding groove for holding the trunk cable and is used in a pair up and down, and two sets are provided facing each other at a distance that can accommodate the connection branch part where the branch line is connected to the trunk cable. Main line side retainer and branch line retaining groove formed in a rectangular parallelepiped shape and having an arcuate cross section on the upper surface for retaining the branch line are used as a pair of upper and lower sides, two pairs facing each other and two pairs of the main lines A nest consisting of the two sets of main line side pressers and a branch side line presser formed in a rectangular frame shape, which are arranged apart from each other by a distance capable of accommodating a connecting branch part in which a branch line is connected to a main line cable between the side line pressers. And a cable escape portion for escaping the branch line at the end face portion contacting the two sets of branch line side line retainers, respectively It is constituted by a pair of upper and lower molds for housing.

[Action]

A pair of upper and lower cores having a mold groove for accommodating a connection branch portion in which a branch line is connected to a main cable and resin-molding the core cable, and the mold groove formed adjacent to the end portion of the core cable projecting side and having an arc cross section. A pair of upper and lower trunk line side retainers provided with a trunk line cable retainer groove for communicating the main line cable with each other, and a trunk line cable that is formed in an arc-shaped cross section adjacent to the branch line protruding side end of the core and communicates with the mold groove Of the main line cable and the pair of upper and lower branch side line retainers that are provided with the branch line retainer groove for retaining the main line cable retainer groove and the branch line retainer for branching and connecting the main line cable. Connecting the trunk cable and branch line even if the size changes If the size of the branch part does not change, the trunk side wire retainer and the branch side wire retainer are stored with different diameters of the trunk cable retaining groove. Well replacement time of the mold is not necessary to replace the entire mold simply by replacing the different branches lateral line presser diameters of the branch line retaining groove can be greatly shortened. Further, it is formed in a rectangular parallelepiped shape and has an upper surface formed in an arcuate cross-section and is provided with a trunk cable holding groove for holding the trunk cable, which is used in a pair up and down and can accommodate a connection branch part connecting a branch line to the trunk cable. Two pairs of main line side retainers that are spaced apart and face each other, and a branch line retainer groove that is formed in a rectangular parallelepiped shape and has an arcuate cross-section on the upper surface that retains the branch line are used as a pair in the upper and lower sides. The two sets of the trunk side wire retainer and the two sets of the trunk side wire retainer and the branching formed in the shape of a rectangular frame are arranged at a distance enough to accommodate the connection branch part in which the branch line is connected to the trunk cable. A nesting consisting of a side wire retainer and a box-shaped cable escape portion that escapes the main cable to the end face portion that is in contact with the two sets of main line side retainers, and a branch line is provided on the end face portion that contacts the two pairs of branch line side retainers. Escape Since it is configured by a pair of upper and lower molds that respectively accommodate the cable escape portions and accommodate the nest, when manufacturing a wiring unit configured by wiring the trunk cable and the branch lines in a cross shape so as to be orthogonal to each other, Even if the diameters of the main cable and the branch line change, if there is no change in the size of the connection branch between the main cable and the branch line, there is no need to change the formwork. Main line side wire retainer with matching diameter of main cable retainer groove and branch side line retainer with matching diameter of branching line retainer groove It is not necessary to replace the entire mold, and die replacement time is greatly reduced. be able to.

【Example】

Embodiments of the present invention will be described below. FIG. 1 shows an embodiment of a branch portion molding die of a branch cable according to the present invention. In the figure, reference numeral 1 is a mold for forming a branch portion of a cable with a branch, which includes a mold 2 and a nest 3. The formwork 2 is formed in a rectangular box shape and has a storage section 4. Further, rectangular cable escape portions 5 and 6 are formed at both ends in the longitudinal direction of the formwork 2. The cable escape portions 5 and 6 except for the branch portion where the trunk line 110 and the branch line 120 are connected by the compression connector 130 when the resin 140 is molded after the trunk line 110 and the branch line 120 are connected by the compression connector 130. It is an escape for a successful establishment. The nesting 3 connects the trunk line 110 and the branch line 120 to the compression connector 130.
It is a mold for molding the resin 140 on the branch portion connected by (1), and is composed of a trunk side wire retainer 7, a branch side wire retainer 8, and a core 9. The main line side presser foot 7 is provided with a main line side line presser groove 10. The main line side line presser groove 10 is a compression connector 1 of the main line 110.
It is for sealing the vicinity of the branch part connected at 30. That is, the trunk line 110 and the branch line 120 are connected to the compression connector 13
The main line 110 when molded with resin 140 in the part connected with 0
This is to prevent the resin from leaking between the mold and the mold. The branch side wire retainer 8 is provided with branch side wire retainer grooves 11 and 12, and the branch side wire retainer grooves 11 and 12 are connected to the main line 110.
And to seal the trunk line 110 and the branch line 120 near the branch portion connected by the compression connector 130 of the branch line 120. That is, in order to prevent the resin from being injected from between the main line 110 and the branch line 120 and the mold when the main line 110 and the branch line 120 are molded with the resin 140 at the portion connected by the compression connector 130. belongs to. The core 9 is provided with a trunk line 110 and a branch line 120, and a compression connector 130.
A mold groove 13 for molding with the resin 140 is formed in the branch portion connected with. With such a configuration, the frame 2 of the branch portion molding die 1 of the cable with branch is detachably attached and fixed to the injection molding machine (not shown) with bolts or the like. The reason why the bolts and the like are detachably attached and fixed to the injection molding machine is to allow the special size to be adequately dealt with by exchanging the mold 2. In addition, the branch portion where the trunk line 110 and the branch line 120 are connected by the compression connector 130 includes a trunk side line retainer 7, a branch side line retainer 8,
It is molded into the shape of the nest 3 by the core 9. Even if the type of the main line 110 changes or the size (diameter thickness) and the number of branch lines 120 change, it is not necessary to replace the mold 2 attached to the injection molding machine with bolts, etc.
This can be easily performed by exchanging only the insert 3 that is inserted into. When the size (diameter thickness) of the main line 110 and the branch line 120 is changed, the main line side presser 7 is replaced with the main line side presser 7 of the main line side presser groove 10 that matches the size of the main line 110. 8 is the size of the branch line 120 and the branch side wire retainer groove 1
It is necessary to replace the branch side wire retainer 8 of 1 and 12. But,
Since the core 9 can be used in common, it is sufficient to replace only the branch side wire retainer with a line retainer that matches another size.
There is no need to replace it. In this way, the branch part
All are molded in a nested shape, trunk line 110 and branch line 1
All 20 different sizes and shapes can be handled only by changing the nest. When the cable penetrates the molded part like a branched cable, the nest is divided into several parts to accommodate the change in the size of the branch line or the change in the number. FIG. 2 shows an embodiment of a branch portion molding die for a cable with a branch according to the present invention. In the figure, the present embodiment is a mold used for a wiring unit configured by arranging the trunk line 110 and the branch line 120 in a radial pattern. 20 is a branch portion molding die of the cable with a branch, an upper mold frame 21, a lower mold frame 22, a nest 23 (in the present embodiment,
Only the bottom nest is shown, and there is an upper nest that mates with this bottom nest, but not shown here)
It is composed of and. The upper frame 21 and the lower frame 22 are formed in a rectangular box shape and have storage portions 24 and 25. Further, rectangular cable escape portions 26, 27 are formed on the peripheral side surfaces of the upper mold 21 and the lower mold 22. The cable escapes 26 and 27 are
After connecting 0 and branch line 120 with compression connector 130, resin 140
This is a relief for properly fixing the portion other than the branch portion where the trunk line 110 and the branch line 120 are connected by the compression connector 130 at the time of molding. The nest 23 seals the trunk line 110 and the branch line 120 in the vicinity of the branch part, and the branch part connecting the trunk line 110 and the branch line 120 has an upper formwork.
The purpose is to prevent the resin from leaking between the main line 110, the branch line 120, and the mold when the resin is molded in the storage parts 24 and 25 of the lower mold 22 and the lower mold 22. This nesting 23 is, for example,
It is constituted by two trunk side line retainers 28 and 29 and branch side line retainers 30 and 31. On the main line side presser foot 28, 29,
Multiple trunk side line retainer grooves 32, 33
A plurality of branch side line pressing grooves 34, 35 are provided in the. The trunk side line retainer grooves 32, 33 and the branch side line retainers 30, 31
Is selected according to the size of the trunk line 110 and the branch line 120 used. Since it is configured in this way, the upper mold 21 and the lower mold 22 of the branch part molding die 20 of the cable with branch are detachably attached and fixed to the injection molding machine (not shown) with bolts or the like. There is. The reason why the bolts and the like are detachably attached and fixed to the injection molding machine is that in the case of a special size, the upper mold frame 21 and the lower mold frame 22 can be replaced so that they can be handled. In addition, the branch portion between the trunk line 110 and the branch line 120 is
28, 29, branch side line pressers 30, 31, and storage part 24 for the upper mold 21
And the housing portion 25 of the lower mold 22 are molded into a rectangular shape as shown in FIG. Even if the type of trunk line 110, the number of branch lines 120 or the size (diameter thickness) of branch lines 120, and the number change, the upper mold 21 and lower mold 22 attached to the injection molding machine with bolts etc. are replaced. There is no need to do the upper and lower formwork 21,
This can be easily performed by exchanging only the insert 23 that is inserted into 22. When the size (diameter thickness) of the trunk line 110 and the branch line 120 is changed, the trunk line side presser foot 28, 29 is replaced with the trunk line side presser groove 32, 33 of the size of the trunk line 110. It is necessary to replace the branch side wire retainers 30 and 31 with the branch side line retainer of the branch side line retainer groove that is suitable for the size of the branch line 120. In addition, the branch side wire retainers 30 and 31 are replaced with the trunk side line retainers 28 and 29 of the branch side line retainer grooves 34 and 35 that match the size of the branch line 120, and the branch side line retainers 30 and 31 match the size of the branch line 120. It is necessary to change to the branch side line retainer of the side line retainer groove. In the present embodiment, the core 24 is not provided in the resin mold portion, and instead of the core, the storage portion 24 of the upper mold 21 is provided.
Although the storage part 25 of the lower mold 22 is used, the core 23 may be provided to form the nest 23 by the trunk side wire retainers 28, 29, the branch side wire retainers 30, 31 and the core. In the case where the unit cable as shown in FIG. 3 is made as described above, even if the size and the number of branch lines are changed each time molding is performed, four wire pressers are held as in the embodiment shown in FIG.
It is possible to divide into 28, 29, 30, 31 and replace and mold the line retainers 28, 29, 30, 31 only on the part where the size is changed (or the number of branch lines is increased or decreased). Also, the storage part of the upper mold 21
When a core is used in place of 24 and the housing portion 25 of the lower formwork 22, one core and four wire retainers 28, 29, 30, 31 are replaced and molded to form a unit cable branch line. It can be adapted according to the size and number.

[Effect of device]

Since the present invention is configured as described above, it has the following effects. According to the first aspect of the present invention, a pair of upper and lower cores having a molding groove for accommodating the connection branch portion in which the branch line is connected to the trunk cable and resin-molding the core branch wire, and adjacent to the end portion of the core on which the trunk cable protrudes are provided. And a pair of upper and lower trunk line side retainers, which are formed in an arcuate cross-section and communicate with the mold groove to hold the mainline cable, and which are adjacent to the ends of the core projecting side of the branch line and formed in an arcuate cross-section. And a pair of upper and lower branch side wire retainers provided with a trunk cable retainer groove communicating with the mold groove for retaining the main cable and a branch line retainer groove for retaining the branch line branched and connected from the main cable. Therefore, if the size of the connection branch between the trunk cable and the branch line does not change even if the size of the trunk cable and the branch line changes, press the trunk side line clamp and the branch side line clamp to the trunk cable retainer. Replacement can be greatly shortened time of the mold is not necessary to replace the entire mold simply by replacing the different storage trunk side wire retainer to the diameter of different branches lateral line presser branch line retaining groove diameters of. According to the first aspect of the invention, a trunk cable holding groove for holding the trunk cable is formed in a rectangular parallelepiped shape and has an arc-shaped cross section on the upper surface, and the trunk cable is used as a pair of upper and lower parts. Two sets of trunk side line retainers are provided facing each other at a distance that can accommodate the connected connection branch part,
It is formed in a rectangular parallelepiped shape, is formed in an arcuate cross-section on the upper surface, and is provided with a branch line holding groove for holding the branch line, which is used as a pair of upper and lower sides, and two sets are opposed to each other and between the two sets of main line side line holders. A nest comprising two sets of main line side retainers and branch side line retainers formed in a rectangular frame shape, which are arranged at a distance that can accommodate a connection branch portion in which a branch line is connected to a main line cable,
A box-shaped cable relief portion for escaping a trunk cable is provided at an end surface portion in contact with the two sets of trunk line side retainers, and a cable relief portion for escaping a branch line is provided at each end surface portion in contact with the two sets of branch line side line retainers. Since it is composed of a pair of upper and lower formwork that accommodates the nest, when manufacturing a wiring unit configured by wiring the trunk cable and the branch line in a cross shape so as to be orthogonal to each other, the diameter of the trunk cable and the branch line Even if the size changes, if there is no change in the size of the connection branch between the trunk cable and the branch line, there is no need to change the formwork,
It is not necessary to replace the entire die by simply replacing the trunk side wire retainer and the branch side wire retainer with the trunk side cable retainer with the diameter of the trunk cable retainer groove and the branch side wire retainer with the diameter of the branch line retainer groove. The replacement time can be greatly reduced.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a branch portion molding die for a branch cable according to the present invention, and FIG. 2 is another embodiment of a branch portion molding die for a branch cable according to the present invention. FIG. 3 is an exploded perspective view, FIG. 3 is an overall perspective view of a wiring unit cable manufactured by a branch portion molding die of the branch cable shown in FIG. 2, and FIG. 4 is a structural view of a branch portion of a conventional branch cable. FIG. 5 is an overall perspective view of a lower molding die of a branch portion of the cable with branch shown in FIG. 1,20 …… Branch molding die 2,21,22 …… Form 3,3 …… Nest 4,24,25 …… Storage 5,6,26,27 …… Cable escape 7,28, 29 …… Main line side line presser 8,30,31 …… Branch side line presser 9 …… Core 10,32,33 …… Main line side line presser groove 11,12,34,35 …… Branch side line presser groove 110 …… Main line 120… … Branch line 140… Resin

Claims (2)

[Scope of utility model registration request] 1. A pair of upper and lower cores provided with a molding groove for accommodating a connecting branch portion in which a branch line is connected to a main cable and resin-molding the core cable, and adjacent to the end portion of the core protruding side of the main cable, and having an arc-shaped cross section. A pair of upper and lower trunk line side retainers provided with a trunk line cable retainer groove that is formed to communicate with the mold groove and retains the main line cable, and the mold groove formed in an arc-shaped cross section adjacent to the branch line protruding side end of the core A box-shaped insert with a trunk consisting of a trunk cable holding groove for holding the trunk cable and a branch wire holding groove for holding the branch wire branched and connected from the trunk cable. A branch of a cable with a branch, characterized in that a cable escape portion is provided on the contact side surface of the trunk side wire holding side and the branch side wire holding side, and is constituted by a pair of upper and lower molds for housing the nest. Part molding die. 2. A connection branching part, which is formed in a rectangular parallelepiped shape and has an upper surface formed in an arcuate cross-section and has a trunk line cable holding groove for holding down the main line cable and is used in a pair of upper and lower parts, in which a branch line is connected to the main line cable. The main line side retainer is provided in two sets facing each other at a distance that can accommodate each other, and the branch line retainer groove that is formed in a rectangular parallelepiped shape and has an arc-shaped cross section on the upper surface to retain the branch line is used in a pair up and down. Two sets facing each other and separated from each other by a distance capable of accommodating a connection branch portion in which a branch line is connected to a trunk cable between the two sets of trunk side line retainers and the two sets of trunk side line retainers are formed in a rectangular frame shape. A nest formed of a branch side wire retainer to be formed, and a cable relief portion formed in a box shape to allow the trunk cable to escape to the end face portion in contact with the two sets of the trunk line side retainers, and the end face portion in contact with the two sets of the branch line side retainers. Branch Bifurcation molding die of a branch cable, characterized by being configured by the pair of upper and lower molds for housing the nest respectively a cable relief portion to escape.