JP2998871B2 - Wire storage device with cooling trough - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method for manufacturing a cable,
The present invention relates to a wire 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 where the temperature of the cable is high, so that the cable is cooled with water. And
If the product is particularly large and is intended for high-speed production, the cooling trough also needs to respond to this and increase its cooling capacity.

Conventionally, the following measures have been taken to improve the cooling capacity of the cooling trough. As a first means, there is a method of lengthening the cooling trough or increasing the time for the product to pass through the cooling trough by repeatedly passing the cooling trough a plurality of times. . As a second means, there is a method of lowering the temperature of the cooling water to accelerate the temperature drop of the product.

[0004] However, in the above-mentioned second means, there is a limit in lowering the temperature of the cooling water. Therefore, the first means, that is, a method of extending the passage time of a product, is generally used.

[0005] Further, when winding the manufactured cable at the time of manufacturing the cable, in order to replace the winding drum without stopping the manufacturing line, the following means have conventionally been taken. That is, the cable is turned to a plurality of moving and fixed pulleys, and the moving pulley is pulled at a constant tension to store the wires, and a control band is provided on the fixed pulley side to emit a winding speed tuning signal. In general, a method is used in which a line is stored without stopping the line when the drum is replaced, and after the drum is replaced, the cable stored up to the control band position is recovered and used for use. It was often used as a means.

[0006]

The first means for improving the cooling capacity of the cooling trough is that the installation space becomes large, and it is difficult to increase the cooling trough in the case of an already installed line. The point is that the equipment cost is high when passing through multiple troughs, and in the case of cables with particularly thick insulation, the cooling length is extremely large because the surface is cooled but the inside is difficult to cool. It is necessary to take the above and the above-mentioned problems arise.

[0007] If the cooling is insufficient, the cable is wound around a cable in a state where the inside is not cooled.
Accordingly, the internal heat is transmitted to the surface with the passage of time, and a problem such as sticking or deformation of the cable wound inside the drum occurs. Such a problem is particularly remarkable in a thick-walled, tension-wound cable.

The present invention has been made to solve the above-mentioned problems in the prior art and to provide a new storage device with a cooling trough in which the cooling capacity for a cable is remarkably improved. .

[0009]

SUMMARY OF THE INVENTION According to the present invention, a cooling process is carried out simultaneously and concurrently with the work of storing the manufactured coated cable by installing a pulley for storing the wire in the cooling trough. To be fulfilled. Also, primary cooling
Storage cooling as secondary cooling above all cooling troughs
Roughs are provided at a position near the tip of this storage section cooling trough.
Move the fixed pulley to the position near the rear end.
The storage mechanism composed of the fixed pulley and the movable pulley is configured such that the winding speed control zone is formed at two positions in the distance based on the movement of the movable pulley. During operation, take a long effective cooling length,
By changing the effective cooling length to a shorter length when replacing the drum, the stored dose can be used more effectively. The present invention has solved the conventional problems based on the employment of such means.

[0010]

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

Reference numeral 3 denotes a rack for installing a wire storage device provided above the cooling trough 2, and 4 denotes a storage trough cooling trough provided on the rack 3, which performs secondary cooling for the above-described coated cable K. To do. A fixed pulley 5 is provided near the front end of the storage section cooling trough 4, and a movable pulley 6 is provided near the rear end. 7
Is a driving winch for the moving pulley 6.

Reference numeral 8 denotes a first guide pulley, and 9 denotes a second guide pulley, which guides the coated cable K sent through the cooling trough 2 in the direction of the movable pulley 6.

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

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

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

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

In the state shown in FIGS. 1 and 2, the coated cable K coated by the extruder 1 and extruded in a heated state is subjected to a primary cooling process in a cooling trough 2 and then to a guide pulley 8, 9 is sent in the direction of the arrow shown in FIG. Then, it is turned through the fixed pulley 5 and the movable pulley 6 to pass through the wire storage section cooling trough 4 to perform a secondary cooling process. That is, a cooling process is performed for a portion that cannot be completely cooled by the cooling trough 4.

The sheathed cable K subjected to the secondary cooling process as described above is connected to a measuring instrument via guide pulleys 13 and 14.
After being sent to 10 and measured by the measuring instrument 10, it is wound on a drum 12 via a winder 11.

The relationship between the control zone of the winding speed and the cooling length will be described with reference to FIG. The winding machine 11 is controlled in a control zone A in a steady state, and its speed is controlled by a speed signal ₁ generated by the measuring instrument 10 described below. Therefore, the cooling length L ₁ is obtained using effectively the length of貯線device.

[0020] Then, it is impossible to貯線when replacing the control zone A, the drum 12, when replacing of the drum, a speed signal of a total length 10 which is preset in front of the winding fiber length from upsilon ₁ upsilon Switch to ₂ and move from control zone A to control zone B. Thereafter, when the winding length is reached, if the winding machine 11 is stopped, the movable pulley 6 moves, and the wire can be stored.

The effective cooling length between the drum exchange is shorter than the L _2, and the cooling length L ₁ in the steady state, the cooling capacity is lowered, during which the sheathed cable K is a peripheral portion of the winding It is exposed to the outside air, so that the problem of unexpected cooling does not occur. Incidentally, L ₃ represents a貯線range.

When the exchange of the drum 12 is completed, the winder 11 is started again. At this time, the start timing is
And when the moving pulley 6 is moved to the position of the switching control limit switch 18, the winding speed in the time, performed in the signal upsilon ₁ control zone A, a state in which the cooling capacity is obtained again required depends on this .

[0023]

According to the present invention, by installing a pulley for storing a wire in a cooling trough, the cooling process can be performed simultaneously and concurrently with the wire storing operation of the manufactured coated cable. As a result, the configuration as a wire storage device with a cooling trough is significantly reduced in size, and therefore, the installation space is significantly reduced. Furthermore, the present invention provides a wire storage mechanism composed of a fixed pulley and a movable pulley so that a winding speed control zone is formed at two positions near and far from the movement of the movable pulley, and is effective during steady operation. By making the cooling length longer and switching the drum to a shorter effective cooling length when replacing the drum, the stored dose can be used more effectively. Compared to the combination with the wire storage device, not only the number of pulleys is halved, but also the manufacturing cost is significantly reduced.

[Brief description of the drawings]

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

FIG. 2 shows a wire storage device with a cooling trough according to the present invention,
FIG. 4 is a vertical sectional side view in which a position of the moving pulley and a graph showing a winding signal are drawn in association with each other.

FIG. 3 is a sectional view taken along line XX in FIG. 2;

[Explanation of symbols]

REFERENCE SIGNS LIST 1 Extruder 2 Cooling trough 3 Rack for installing storage device 4 Storage trough cooling trough 5 Fixed pulley 6 Moving pulley 7 Drive winch 8 First guide pulley 9 Second guide pulley 10 Measuring device 11 Winding machine 12 Winding machine Drum 13 Third guide pulley 14 Fourth guide pulley 15 Water supply pipe 16 Drainage pipe 17 Air wiper 18 Switching control limit switch K Coated cable A Regular winding speed control band B Drum replacement winding speed control band L ₁ Normal Effective cooling range L ₂ Effective cooling range when replacing the drum L ₃ Storage range υ ₁ Drum replacement speed signal υ ₂ Steady speed signal

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-52-58888 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H01B 13/00 H01B 13/06-13 / 20

Claims (2)

(57) [Claims] A cooling process is carried out simultaneously and concurrently with the operation of storing the produced coated cable by providing a pulley for storing the cooling cable in the cooling trough. Characteristic wire storage device with cooling trough. 2. A secondary cooling system above a cooling trough as primary cooling.
A storage section cooling trough for cooling is provided.
Place a fixed pulley near the tip of the trough, and
Moving pulleys are respectively installed at the positions near the ends, and a wire storage mechanism constituted by these fixed pulleys and the moving pulleys is provided.
Based on the movement of the moving pulley, the winding speed control zone is formed at two places near and far from each other, and is switched so that the effective cooling length is increased during normal operation and the effective cooling length is shortened during drum replacement. A storage device with a cooling trough that makes it possible to effectively use the stored dose.