JPH0620537A - Wire storage device equipped with cooling through - Google Patents

Abstract

PURPOSE:To provide a cable storage device equipped with a cooling trough excellent in the ability to cool cables by adding a storage portion cooling trough having a cable storage mechanism comprising a cooling trough for high- temperature cables, and a fixed and moving pulley. CONSTITUTION:A cable K being heated and extruded from an extruder 1 is subjected to primary cooling in a cooling trough 2, then fed in the direction of the arrow by guide pulleys 8, 9, then turned via a fixed 5 and moving 6 pulley and subjected to secondary cooling through a storage portion cooling trough 4, then fed to a measuring instrument 10 via guide pulleys 13, 14 and has its length measured, and is wound to a drum 12 via a winder 11. During steady-state operation, the speed of the winder 11 at a control band A is controlled in accordance with a speed signal produced by the measuring instrument 10, and when the amount of cable wound on the winding drum 12 reaches a limit, the signals from the measuring instrument 10 are switched from one to another and the cable is moved from the control band A to B and then the winder 11 is stopped and thereby the moving pulley 6 is moved and the cable is wound to a new drum 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to the production of a cable,
The present invention relates to a storage device with a cooling trough used for continuously winding manufactured cables.

[0002]

2. Description of the Related Art At the time of manufacturing a cable, a cooling trough is installed in a manufacturing line having a high cable temperature, whereby water cooling of the cable is achieved. And
If the product is particularly large and is intended for high-speed production, the cooling trough needs to adapt to this and enhance its cooling capacity.

Conventionally, the following means have been taken as a method for improving the cooling capacity of the cooling trough. The first means is to lengthen the cooling trough or to repeatedly pass through the cooling trough a plurality of times to lengthen the time for the product to pass through the cooling trough. . As a second means, there is a method of lowering the temperature of the cooling water to accelerate the temperature drop of the product.

However, in the above-mentioned second means, there is a limit in lowering the temperature of the cooling water, and therefore, the method of the first means, which is to extend the passage time of the product, is generally used.

Further, when winding the manufactured cable during the manufacture of the cable, the following means have been conventionally used to replace the winding drum without stopping the manufacturing line. That is, the cable is turned to a plurality of movable and fixed pulleys, the movable pulley is pulled with a constant tension to store the wire, and a control band for issuing a tuning signal of the winding speed is provided on the fixed pulley side. It is a common practice to use a storage line device that consists of a storage line device that allows the line to be stored without stopping the line when the drum is replaced, and to collect the stored cable up to the control band position for use after the drum is replaced. It was widely adopted as a means.

[0006]

The first means for improving the cooling capacity of the cooling trough described above requires a large installation space, and it is difficult to add a cooling trough in the case of an already installed line. However, the cost of the device is high when passing through multiple troughs, and in the case of a cable with a particularly thick insulation thickness, the surface is cooled but the inside is difficult to cool, so the cooling length is significantly increased. It is necessary to take the above-mentioned problems.

If the above-mentioned cooling is insufficient, the cable will be wound on the cable without cooling the inside.
Therefore, with the passage of time, the internal heat is transferred to the surface, and problems such as the cable wound inside the drum sticking or deforming occur. Such a problem is particularly remarkable in a thick-walled, tension-wound cable.

The present invention solves the above-mentioned problems in the prior art, and provides a novel storage line device with a cooling trough, in which the cooling capacity for a cable is significantly improved. .

[0009]

SUMMARY OF THE INVENTION The present invention provides a cooling treatment at the same time and in parallel with the storage operation of a manufactured coated cable by installing a pulley for storing the wire in a cooling trough. It will be fulfilled. In addition, the storage line mechanism composed of a fixed pulley and a moving pulley is configured so that the winding speed control band is formed at two near and far positions based on the movement of the moving pulley. By taking a long time and switching the drum so that the effective cooling length is shortened when replacing the drum, the stored dose can be used effectively. The present invention solves the conventional problems based on the adoption of such means.

[0010]

1 and 2, reference numeral 1 denotes an extruder for extruding a coated cable K in a coated and heated state. Reference numeral 2 denotes a cooling trough installed in front of the extruder 1 for performing primary cooling on the coated cable K extruded as described above.

Reference numeral 3 is a storage line device installation stand provided above the cooling trough 2, and reference numeral 4 is a storage line section cooling trough provided on the stand 3, which is used for secondary cooling of the above-mentioned covered cable K. It is for doing. A fixed pulley 5 is installed near the tip of the storage line cooling trough 4, and a movable pulley 6 is installed near the rear end thereof. 7
Is a winch for driving the moving pulley 6.

Reference numeral 8 is a first guide pulley, 9 is a second guide pulley, and these are for guiding the coated cable K sent through the cooling trough 2 toward the moving pulley 6.

Reference numeral 10 is a measuring instrument for measuring the feed length of the coated cable K and controlling the winding speed based on the measurement signal. Reference numeral 11 is a winding machine, and 12 is a winding drum for winding the coated cable K.

Reference numeral 13 is a third guide pulley, and 14 is a fourth guide pulley, which guide the coated cable K sent through the storage line section cooling trough 4 toward the winder 11.

Further, the storage line cooling trough 4 is
As shown in FIG. 2, a water supply pipe 15 and a drainage pipe 16 are provided so that cooling water is circulated and supplied.
17 is an air wiper.

Reference numeral 18 denotes a changeover control limit switch for changing the winding speed of the coated cable K.

In the state shown in FIGS. 1 and 2, the coated cable K coated by the extruder 1 and extruded in the heated state is subjected to the primary cooling treatment by the cooling trough 2 and then the guide pulley 8, It is sent via 9 in the direction of the arrow shown in FIG. Then, the secondary cooling process is performed by being turned through the fixed pulley 5 and the moving pulley 6 and passing through the storage line section cooling trough 4. That is, the cooling process is performed for the amount that cannot be completely cooled by the cooling trough 4.

The coated cable K which has been subjected to the secondary cooling treatment as described above is measured with the scales through the guide pulleys 13 and 14.
After being sent to 10, the length of the strip is measured by the measuring instrument 10, it is wound on a drum 12 via a winder 11.

The relationship between the winding speed control zone and the cooling length will be described with reference to FIG. In the steady state, the winder 11 is in the control band A, and its speed is controlled by the speed signal of ν ₁ emitted from the scale 10 described below. Therefore, the cooling length L ₁ that effectively uses the length of the storage device can be obtained.

In the control band A, the wire cannot be stored when the drum 12 is replaced. Therefore, when the drum is replaced, the speed signal of the measuring instrument 10 preset before the winding length is changed from υ ₁ to υ. Switch to ₂ and move from control band A to control band B. After that, when the winding length is reached, if the winding machine 11 is stopped, the moving pulley 6 moves, and the wire can be stored.

The effective cooling length during the replacement of the drum is L ₂ , which is shorter than the cooling length L ₁ in the steady state, and the cooling capacity is lowered, but the covered cable K during this period becomes the outer peripheral portion of the winding. It is exposed to the open air, so there are no problems with cooling surprises. Incidentally, L ₃ represents a貯線range.

When the replacement of the drum 12 is completed, the winder 11 is restarted. At this time, the start timing is
It is assumed that the moving pulley 6 has moved to the position of the limit switch 18 for changeover control, and at that time, the winding speed is controlled by the signal υ ₁ of the control band A, whereby the necessary cooling capacity can be obtained again. .

[0023]

According to the present invention, by installing the pulley for storing the wire in the cooling trough, the cooling process can be performed simultaneously with and concurrently with the wire storing operation of the manufactured coated cable. As a result, the form of the storage line device with cooling trough is remarkably made compact, and therefore the installation space is remarkably small. Further, according to the present invention, the storage line mechanism composed of the fixed pulley and the moving pulley is configured such that the winding speed control band is formed at two near and far positions based on the movement of the moving pulley, which is effective during steady operation. By taking a long cooling length and switching the drum so that the effective cooling length is shortened when replacing the drum, the stored dose can be effectively used. The number of pulleys is halved and the manufacturing cost is significantly reduced as compared with the combination with the storage device.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view for explanation showing a case where a storage line device with a cooling trough according to the present invention is applied to an extrusion line.

FIG. 2 shows a storage line device with a cooling trough according to the present invention,
In addition, it is a vertical cross-sectional side view in which the position of the moving pulley and the graph showing the winding signal are associated with each other.

FIG. 3 is a sectional view taken along line XX in FIG.

[Explanation of symbols]

1 Extruder 2 Cooling Trough 3 Storage Line Installation Frame 4 Storage Line Cooling Trough 5 Fixed Pulley 6 Moving Pulley 7 Drive Winch 8 First Guide Pulley 9 Second Guide Pulley 10 Scale 11 Winder 12 Winder Drum 13 3rd guide pulley 14 4th guide pulley 15 Water supply piping 16 Drainage piping 17 Air wiper 18 Changeover limit switch K Coated cable A Constant winding speed control band B Drum replacement winding speed control band L ₁ Steady state Effective cooling range L ₂ Effective cooling range at drum replacement L ₃ Storage line range υ ₁ Drum replacement speed signal υ ₂ Steady speed signal

Claims (2)

[Claims] 1. A cooling trough is provided with a pulley for storing a wire, so that a cooling process can be performed simultaneously with and in parallel with the wire storing operation of the manufactured coated cable. A storage line device with a characteristic cooling trough. 2. A storage line mechanism composed of a fixed pulley and a moving pulley is configured such that a winding speed control band is formed at two near and far positions based on the movement of the moving pulley, which is effective during steady operation. A storage line device with a cooling trough that allows the effective use of the stored dose by taking a long cooling length and switching to a shorter effective cooling length when replacing the drum.