KR880002637Y1 - Electric cable covering machine structure - Google Patents

Abstract

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Description

Mold structure of wire cable secondary sheathing device

1 is a partial longitudinal cross-sectional view of the wire sheath secondary coating device to which the present invention is applied.

Figure 2 is an enlarged cross-sectional view of the main part of the present invention.

3 is a perspective view of a small carrier of the present invention.

4 is a partial longitudinal sectional view of a conventional wire cable secondary sheathing device.

* Explanation of symbols for main parts of the drawings

1: crosshead body 2: large carrier

3: nipple 4: nipple holder 5: die

6: small carrier 7: primary insulator supply passage

8: compatible groove 9: die holder

10: secondary insulator supply passage

The object of the present invention is to provide a mold that can reduce the mold size by improving the mold structure of the wire and cable secondary sheathing device to a simple structure and at the same time make it easier to replace molds having different specifications. .

As shown in FIG. 4, the mold structure of the wire cable secondary sheathing apparatus used in the related art is the nipple N which is screwed with the nipple carrier NC through which the conductor C passes, and the nipple ( A primary insulator supply passage (P) through which the primary covering insulator (I) passes is formed between the die nipple (DN) and the nipple holder (NH) where N is inserted, and the front portion of the die nipple (DH). The secondary insulator supply passage (P ') through which the secondary coating insulator (I') passes is formed between the die (D) and the die nipple (DN) in which is inserted, and interpolates the die (D). Outside the die holder DH, the die clamp DP is screwed to the nipple holder NH.

If the problems in the conventional mold structure as described above are enumerated, they can be classified into two types as follows.

First, since the mold structure is complicated, the mold becomes large due to its complexity, and thus, power consumption is increased due to an increase in the capacity of the band heater BH that heats the primary and secondary insulators P and P '. At the same time, there is a drawback that difficulty arises in handling.

That is, a primary insulator supply passage P is formed between the nipple N, the die nipple DN, and the nipple holder NH, and another secondary insulator is formed between the die nipple DH and the die D. It is formed by the supply passage (P '), each outlet is different.

In other words, since the primary and secondary insulator supply passages P and P 'are formed, the mold itself becomes large due to the complicated structure.

Second, there is a drawback that the replacement time takes a long time when changing the mold of different specifications.

That is, in FIG. 4, first, the die clamping fastener DP fastened to the nipple holder NH is loosened, and then the tightened secondary center adjustment bolt B 'is loosened to relax the die D and Take out the combined die holder (DH), and then unscrew the die nipple (DN) screwed to the nipple holder (NH), and then unscrew the nipple (N) fastened to the nipple carrier (NC) Next, replace all parts except the Daigo clamp (DP) with the other standard parts, reassemble them in the reverse order of disassembly, and then use the 1st and 2nd center adjusting bolts (B) (B ') to supply the 1st and 2nd insulator supply passages P) Because the interval of (P ') must be adjusted, there is a drawback that takes much time.

Therefore, the present applicant has come up with the present invention in consideration of the fact that the mold can be miniaturized by integrating the outlet of the primary and secondary insulator supply passages after researching and developing the mold to solve the above-mentioned shortcomings.

The main object of the present invention is to provide a mold having a simple structure and miniaturization as mentioned above.

Another object of the present invention is to provide a mold that is easy to replace when the mold exchange of different specifications.

A specific configuration of the present invention that can achieve the above objectives is that a compatible secondary insulator supply passage is made primary by screwing the nipple to the nipple holder tip and installing a small carrier coupled to the die outside the nipple holder. The same outlet is made to be in communication with the insulator supply passage, which will be described in more detail with reference to the accompanying drawings.

1 is a longitudinal cross-sectional view of the present invention, in which (1) is a cross head body, in which a front end of a large carrier (2) having a compatible distribution groove through which an insulator for primary coating (I) is distributed is sheared. The nipple holder 4 to which the nipple 3 is fastened to the part is screwed together.

Outside the nipple holder 4, a small carrier 6, into which the die 5 is inserted, is installed, and a primary insulator supply passage 7 is formed between the nipple holder 4 and the die 5, and the small carrier The secondary insulator supply passage 10 is connected to the primary insulator supply passage 7 as the die holder 9 is fitted outwardly by the compatible groove 8 arranged in one outer peripheral portion of the side 6. It is formed in communication.

Outside the die holder 9, the die fixing clamp 11 is screwed to the cross head body 1.

In the figure, reference numeral 12 denotes a center adjusting screw, 13 denotes a heater, 14 denotes a clamp, 15 denotes a hinge, 16 denotes an auxiliary extruder-side coupling, and 17 denotes a temperature. The detector 18 is a main extruder side screw 19 is a clamp hole, and 2 is a large carrier 20 clamp.

Referring to the effects of the present invention configured as described above are as follows.

The conductor C of the electric wire cable is inserted into the hollow portion of the large carrier 2 so as to pass through the nipple holder 4 to the nipple 3 and to be coated at the same time.

The primary covering insulator (I) is fed into the primary insulator supply passage (7) along the compatible groove of the large carrier (2) by the rotation of the screw (18), and the secondary covering insulator (I ') Through the hinge 15, it is pumped into the secondary insulator supply passage 10 formed between the compatible groove 8 and the die holder 9 of the small carrier 6.

Therefore, the secondary covering insulator I ', which is fed into the secondary insulator supply passage 10, is conveyed in the reverse direction as a path as shown by an arrow in FIG.

Subsequently, as shown in FIG. 2, the primary covering insulator I forwardly pumped in the primary insulator supply passage 7 and the secondary covering insulator I ′ that are forward-screwed together meet each other, and at the same time, The secondary coating insulator (I ') adheres to the outer surface of the insulator (I) by viscosity, and forwards it forward along the primary coating insulator (I), which has a high pressure force. In addition to being sent out as a sphere, the wire (C) from the nipple (3) is embedded in the outer surface of the conductor (C) to be able to efficiently cover the wire.

In the present invention acted as described above, the nipple holder (4) is fastened to the tip of the large carrier (2), the nipple (10) is screwed to the tip of the nipple holder (4), the die (5) outward Is interpolated and the die holder 9 is extrapolated to the small carrier 6 having the compatible groove 8 so that the primary insulator supply passage 7 and the secondary insulator supply passage 10 communicate with each other. Since the car insulator (I) (I ') is configured to be extruded through the outlet of the primary insulator supply passage (7), the structure is not only simple compared to the conventional mold structure, but also the conductor (C). Very good coating is possible even when covering the primary and secondary insulators (I) and (I ').

In addition, when the mold thickness needs to be changed due to the change in the coating thickness and the diameter of the conductor (C), the die clamp 11 is first loosened, and the small carrier 6 into which the die 5 is inserted is removed, and then the nipple 10 is loosened. If only the nipple 10 and the die 5 are simply replaced in the state, and the assembly is performed in the reverse order of disassembly, the mold replacement work can be easily completed.

As described above, the present invention has a simpler structure than that of a conventional mold, and can be miniaturized, and at the same time, the heater capacity of the mold can be reduced, thereby reducing power consumption. It is a device that has a simple and easy effect.

Claims (1)

In the conventional one in which the primary and secondary sheathing insulators (I ') (I') are fed in the main extruder and the auxiliary extruder, and the large carriers 2 are embedded in the cross head body 1, the large carriers 2 are provided. A small carrier having a nipple holder 4 fastened to the tip, a nipple 3 screwed to the tip of the nipple holder 4, and a die 5 inserted therein and having a compatible groove 8 therein. 6) The die holder 9 is extrapolated so that the primary insulator supply passage (7) and the secondary insulator supply passage (10) communicate with each other so that the outlet port is integrated.