DE1950085A1 - Method of manufacturing a cable sleeve - Google Patents

Description

Patent attorney

7000 Stuttgart-Peuerbach

Short street 8

J. R. Eyre - Dec.

IMERNATIONAL STANDARD ELECTRIC CORPORATION, NEW YORK

Method of manufacturing a cable sleeve.

The application relates to a method for producing a tight connection between an electrical cable with a plastic sheath and a plastic tube, whose inner diameter is larger than the outer diameter of the cable. Such connections are for example on sleeves for electrical connections Cable applicable.

According to the invention, the process consists of the following process steps together:

a) Manufacture one that is adapted to the inside diameter of the plastic pipe Spacer,

b) pushing the plastic pipe onto the spacer in such a way that that it protrudes over the spacer on both sides,

c) Placing an injection mold with inlet and outlet openings

on a plastic pipe part protruding beyond the cable sheath,

d) Introducing openings corresponding to the openings in the casting mold into the plastic pipe,

e) Injecting molten thermoplastic material through the Inlet opening until the mold is filled with solidified thermoplastic material,

f) Removal of the casting mold and removal of excess injection molding compound.

September 18, 1969 009816/1311

Bo / Thu - - / -

J. R. Eyre - Dec.

The method for producing a cable sleeve includes, according to another Embodiment of the invention, the following process steps:

a) pushing the plastic pipe onto one end of the cable,

b) production of the inner frame,

c) Production of the adapted to the inside diameter of the plastic pipe Spacers on each end of the cable,

d) Pushing the plastic tube onto the spacer under the cover the inner sleeve in such a way that the plastic pipe on both sides protrudes beyond the spacers,

e) Casting the cavities by means of an injection mold.

The invention will now be explained further with reference to the accompanying figure showing a cable sleeve in which one side is already tightly closed and the other is prepared to be closed.

Before producing the inner sleeve 12 for the two plastic jacket cables 1 and 11, a suitable plastic tube 2 is pushed over one end of the cable. The inner sleeve 12 is then produced and each cable end is provided with a spacer 3 in such a way that a paper or plastic tape is wrapped tightly around the cable jacket. The plastic pipe ~ j> is then pushed over both spacers with which it will later form a tight connection, namely in a position in which the plastic pipe protrudes at both ends over the spacers J5.

The one plastic pipe / cable jacket connection is then split into a Injection mold 4 with an inlet opening 5 and an outlet opening 6 are used. Then in the plastic pipe with the openings 5 and 6

0 0 9 816/1311

J. R. Eyre -12

corresponding openings 7 and 8 introduced. Through the inlet port 5 plastic, for example pdtyethylene, is melted under pressure, injected into the cavity 9. The molten plastic flows through it the cavity 9 towards the outlet opening 6, in which it cools down and closes the casting mold by means of a plastic stopper. That. Pressing in Plastic is continued until the cavity 9 with solidified Plastic is filled so that air bubbles are largely avoided. ' The mold is then removed and can be used again. After removing superfluous injection molding compound, a closure has been created, as is denoted by 10 in the figure. The clasp on the opposite The end is made in the same manner.

The casting mold 4 can of course also be made in one piece. In this In the case, a casting mold is slipped over each cable end before the inner sleeve is produced. However, the molds must after completion of the Closures are destroyed.

It is also possible to use spacers 3 other than those made of ribbons can be used, for example matching plastic washers; these must but also before making the inner sleeve over the cable ends be streaked.

Preferably, the thermoplastic material of the cable jacket, des Plastic pipe and the injection-molded plastic polyethylene are used will; however, other thermoplastic materials can also be used.

8 claims

1 sheet. Drawing with 1 Fig.

9816/1311

Claims (8)

1950035 J. R. Eyre - 12 claims 1./A method for producing a tight connection between an electrical cable with a plastic sheath and a plastic pipe, the inner diameter of which is larger than the outer diameter of the cable, characterized by the following process steps: a) production of a spacer 0) adapted to the inside diameter of the plastic pipe (2), b) pushing the plastic pipe onto the spacer in such a way that that it protrudes over the spacer on both sides, c) placing an injection mold (4) with inlet and outlet openings (5, 6) on a plastic pipe part protruding beyond the cable sheath, d) introduction of corresponding to the openings of the casting mold Breakthroughs (7,8) in the plastic pipe, e) Injecting molten thermoplastic material through the inlet opening (5) j to the mold with solidified thermoplastic Material is filled, f) Removal of the casting mold and removal of excess injection molding compound. 2. A method for producing a cable sleeve for electrical cables with a plastic pipe according to claim 1, characterized by the following process steps: a) pushing the plastic pipe onto one end of the cable, b) production of the inner sleeve, c) Production of the adapted to the inside diameter of the plastic pipe Spacers on each end of the cable, 0 0 9 8 16/1311 ^V " -5- 1950035 J.R. Eyre - 12 d) Pushing the plastic tube onto the spacer under the cover the inner sleeve in such a way that the plastic pipe protrudes over the spacers on both sides, e) Casting the cavities by means of an injection mold. 3. A method for producing a cable sleeve according to claim 2, characterized in that the spacers are applied in the form of suitably shaped plastic disks before the production of the inner sleeve. 4. A method for producing a cable sleeve according to claim 2, characterized in that the spacers are applied in the form of paper strips wound onto the cable jacket after the inner sleeve has been produced. 5. A method for producing a cable sleeve according to claim 2, characterized in that the spacers are applied in the form of plastic strips wound onto the cable jacket after the inner sleeve has been produced. 6. A method for producing a cable sleeve according to one of claims 1 to 5 » characterized in that the plastic used is polyethylene. 7. A method for producing a cable sleeve according to claims 1 to 6, characterized in that a partially and detachable injection mold is used. 8. A method for producing a cable sleeve according to the claims 1 to 7, characterized in that a flowable a Resin is used. 009816/131 1