JP2588922Y2 - Wire manufacturing equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire manufacturing apparatus capable of supplying a core wire with a stable tension in a wire coating line or the like.

[0002]

2. Description of the Related Art In an electric wire coating line or the like, a resin coating is applied on a core wire by an extruder. In order to stabilize the production conditions in this case, the tension of the core wire supplied to the extruder is kept constant. FIG. 4 is a schematic plan view showing an example of a conventional electric wire manufacturing apparatus. In this apparatus, a pair of supply drums 3 is provided on a supply 2 for supplying a core 1, and a core feeder 4, an accumulator 5, a brake device 6, an extruder 7, and a winding machine 8 are arranged on the line. It is.

A supply 2 is of a so-called double capstan type.
Is supplied, and when the supply drum 3 becomes empty, the core wire is supplied from the other supply drum 3, and the core wire is continuously supplied without stopping the line. The core wire feeder 4 is a device for feeding the core wire 1 supplied from the supply 2 in this manner onto a line. The accumulator 5 is provided to absorb a change in linear velocity when the supply drum 3 is switched in the supply 2. The brake device 6 is a device for applying a reverse tension to the core wire 1 supplied to the extruder 7 and supplying the core wire 1 to the extruder 7 at a constant tension. The extruder 7 is a device for applying resin coating to the core wire 1. The winding machine 8 winds the extruded core wire. Although a cooling device or the like is usually provided between the extruder 7 and the winding machine 8, it is not shown here.

[0004] The above-described electric wire manufacturing apparatus is used in the following two modes. FIG. 5 is a schematic plan view showing a first use mode of the device shown in FIG. In the figure,
In this usage mode, the core 1 is supplied to the extruder 7 via the core feeder 4 and the accumulator 5 without using the brake device 6 shown in FIG. The linear velocity fluctuation generated when the supply drum 3 is switched in the supply 2 is absorbed by the accumulator 5. The core wire feeder 4 draws the core wire 1 from the supply 2 with an appropriate tension, and applies a driving force to the pulley 4A so as to feed the core wire 1 onto the line. The accumulator 5 has a pair of dancer sheaves 5A and 5B, one of which is stationary and the other is mounted in a movable state, and increases or decreases the accumulated amount of the core wire 1 by expanding and contracting the distance between the axes. As a result, the fluctuation in the linear velocity of the core wire 1 is absorbed, but the core wire feeder 4 detects the core dose accumulated in the accumulator 5 and
A is controlled at a variable speed to adjust the feed amount of the core wire 1. The dancer sheaves 5A and 5B of the accumulator 5 are:
A constant tension is applied to the core wire 1 by a force for separating the axes from each other.

FIG. 6 is a schematic plan view showing a second mode of use of the electric wire manufacturing apparatus shown in FIG. In the second mode of use, only the brake device 6 is interposed between the supply drum 3 and the extruder 7. That is, in this usage mode, assuming that there is no large linear velocity fluctuation due to switching of the supply drum 3 or the like, the rotational speed of the pulley 6A of the brake device 6 is synchronized with the linear velocity of the core wire 1 wound by the winder 8,
A constant reverse tension is applied to the core wire 1.

[0006]

In the above-described conventional electric wire manufacturing apparatus, for example, when operating the apparatus according to the first mode of use, a brake device is not used. When operating the apparatus according to the second mode of use, the core wire feeder 4 and the accumulator 5 are not used.
However, in order to be able to use the wire manufacturing apparatus in any usage mode, as shown in FIG.
Core feeder 4, accumulator 5, and brake device 6
Must be arranged in front of the extruder 7 in order, and there is a problem that the length of the line becomes longer and the configuration becomes complicated. The present invention has been made by paying attention to the above points, and eliminates waste of equipment and space in the line, simplifies the configuration, and can send out the core wire in any of the above aspects. An object of the present invention is to provide an electric wire manufacturing apparatus.

[0007]

According to the present invention, there is provided an electric wire manufacturing apparatus comprising: a supply for supplying a core, a core feeder for sending the core from the supply onto a line, and a core fed by the core feeder. An accumulator that temporarily accumulates in the core wire feeder, when sending out the core wire onto the line via the accumulator, applying a predetermined driving force to the core wire feeder, the core wire the accumulator In the case where the wire is fed onto the line after passing, a switch for performing a switching control so as to apply a braking force to the core wire feeder is provided.

[0008]

In this device, the core wire feeder and the brake device of the conventional device are integrated, and the pulley driven by the core wire feeder sends out the core wire in the first mode of use and supplies it to the accumulator. In the second mode of use, a braking force is applied to the pulley, and a constant reverse tension is applied to the core wire. A mechanism is provided inside the core wire feeder so as to switch such use modes.
As a result, only the core wire feeder and the accumulator need be arranged on the line, and the configuration of the line can be simplified, and the facility, cost, and space can be improved.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the embodiments shown in the drawings. FIG. 1 is a schematic plan view showing an embodiment of an electric wire manufacturing apparatus according to the present invention. In the figure, this apparatus comprises a line for feeding a core wire 1 from a supply 2, applying a resin coating to the core wire 1 in an extruder 6, and winding it up with a winding machine 7. ing. The supply 2 is, for example, of a double capstan type provided with a pair of supply drums 3. The core wire feeder 10 has a function of feeding the core wire 1 by the pulley 11 and a function of applying a constant reverse tension to the core wire 1, and details thereof will be specifically described later. The accumulator 5 includes a pair of dancer sheaves 5.
A and 5B, as in the prior art, are devices in which one is stationary and the other is in a movable state, and the core wire 1 is accumulated while expanding and contracting the inter-axis distance.

The core feeder 10 includes a pair of sprockets 12A and 12B for driving a pulley 11, and a chain 13 connecting these sprockets. The drive shaft 14 of the sprocket 12B is connected via a powder clutch 15 to an output shaft 16 of a worm speed reducer 17.
The powder clutch 15 transmits the rotation of the output shaft 16 of the worm reduction unit 17 to the rotation shaft 14 of the sprocket 12B by an electromagnetic clutch function.
The worm reduction unit 17 is configured to reduce the rotation of the output shaft of the four-stage transmission 18 at a fixed ratio using a so-called worm gear and transmit the rotation to the output shaft 16 of the worm reduction unit 17. The four-stage transmission 21 includes an inverter motor 25, a pair of pulleys 23A and 23B, and a V-belt 2
4 to transmit the torque of the inverter motor 25 to the output shaft 18 by switching between four types of transmission gears.

Here, in the core wire feeder 10 of the present invention, the output shaft 26 of the inverter motor 25 is directly connected to the brake device 27. Inverter motor 25
Is a motor whose speed is controlled in accordance with the accumulated amount of the core wire 1 accumulated in the accumulator 5;
Reference numeral 7 has a function of locking the output shaft 26 of the inverter motor 25 when the device of the present invention is operated in the second mode of use. When the use mode of the device is switched, the brake device 27 is operated, and the operation state of the powder clutch 15 is also switched by the switch 28. In addition, this device
When used in accordance with the usage mode, the core wire 1 is guided on the line as shown by the solid line, but when operated in the second usage mode, the core wire 1 is guided by passing through the accumulator 5 as shown by the alternate long and short dash line. Accordingly, in order to adjust the deviation of the core pass line in this case, the core feeder 10 is provided with the rail 2.
9 on top. Thus, the core wire feeder 10 is configured to be slidable left and right in the direction of the arrow M. In order to accurately guide the core wire 1 to the pulley 11, the pulley 11
A guide roller 30 that slides with the guide roller 30 is provided.

FIG. 2 shows a specific structure of the pulley 11 portion. Core wire feeder 10 in the device of the present invention
Since the pulley 11 has a function of both sending out the core wire and braking, it is preferable to adopt a configuration as shown in the figure. That is, in the drawing, the core wire 1 is sent out, for example, from the left to the right in the drawing, and a pair of guide rollers 3 is pressed on the joint so that the core wire 1 is pressed against the sheave 31.
2A and 32B, and three guide rollers 33
Endless belt 3 stretched around A, 33B, 33C
4 is arranged so as to circumscribe the sheave 31.

Further, as a modified example of the pulley 11, a configuration as shown in FIG. 3 can be considered. That is, in FIG.
Guide rollers 35A, 35 provided as a pair of upper and lower
Endless belts 36A, 36B for B, 35C, 35D
And the core wire 1 is sandwiched between the endless belts 35A and 35B arranged above and below and sent out. Endless belt 36A, 36
A plurality of pressing rollers 37 are arranged in a portion where B contacts, so that the holding force of the core wire 1 is maintained.

The electric wire manufacturing apparatus of the present invention having the above configuration operates as follows. First, when the apparatus is operated in the first use mode of FIG. 5 described in the prior art, the core wire 1 is stretched over the pulley 11 and the accumulator 5 as shown by the solid line in FIG. Machine 6. Then, in the core wire feeder 10, the brake device 27 is released, and the driving force of the inverter motor 26 is transmitted to the pulley 11 via the four-stage transmission 21, the worm speed reducer 17, the powder clutch 15, and the like. As a result, the pulley 11 feeds the core wire 1 onto the line at a constant speed. If the accumulated amount of the core wire 1 accumulated in the accumulator 5 fluctuates, the driving speed of the inverter motor 25 is controlled to be variable in order to adjust the accumulated amount. Thereby, the operation in the conventional first use state shown in FIG. 5 is performed.

Next, the operation of the device of the present invention in the second mode of use shown in FIG. 6 will be described. In this case, first, core wire 1
As shown by a dashed line in FIG. 1, is directly passed from the pulley 11 to the extruder 6, and the accumulator 5 does not operate.
In order to guide the core wire 1 in this manner, the feeder 10 is slid on the rail 28 by a fixed width toward the left side in the figure as described above. When operating in the second mode of use, the drive shaft 26 of the inverter motor 25 is locked by the brake device 27. as a result,
The output shaft 16 of the worm reduction unit 17 stops its rotation. Further, the switch 28 switches the operating condition of the powder clutch 15. That is, the powder clutch 15 excites the powder clutch 15 so that the coupling state between the output shaft 16 of the worm reduction unit 17 and the rotating shaft 14 of the sprocket 12B causes an appropriate slip. As a result, an appropriate braking force is applied to the pulley 11, and a constant reverse tension is applied to the core wire 1 pulled in the direction of the extruder 6. Thus, the device of the present invention operates in the second operation mode as shown in FIG.

As described above, the apparatus according to the present invention can switch between two modes of use depending on whether a predetermined driving force is applied to the core wire feeder 10 or a braking force is applied. The present invention is not limited to the above embodiment. In the above embodiment, the example in which the device of the present invention is applied to an extrusion line has been described. However, the present invention is not necessarily limited to the extrusion line, and can be applied to various lines that need to supply a core wire with a constant tension. . The configuration of the core wire feeder is as follows:
The core wire can be freely deformed by combining various mechanisms capable of applying a predetermined feeding force or a braking force.

[0017]

[Effect of the invention] The electric wire manufacturing apparatus of the invention described above is
When the core wire is sent out on the line via the accumulator, a predetermined driving force is applied to the core wire feeder, while when the core wire is sent out on the line through the accumulator, a braking force is applied to the core wire feeder. There is no need to arrange a device for sending out a core wire and a device for applying a braking force side by side on a line, which simplifies equipment, reduces equipment costs, and further reduces the space for arranging equipment. There is.

[Brief description of the drawings]

FIG. 1 is a schematic plan view showing an embodiment of an electric wire manufacturing apparatus of the present invention.

FIG. 2 is a front view of an embodiment of a main part of a core feeder used in the apparatus of the present invention.

FIG. 3 is a front view of a modified example of a main part of the core wire feeder used in the device of the present invention.

FIG. 4 is a plan view schematically showing a conventional electric wire manufacturing apparatus.

FIG. 5 is a schematic plan view of a conventional device in a first use mode.

FIG. 6 is a schematic plan view of a conventional device in a second use mode.

[Explanation of symbols]

 Reference Signs List 2 supply 3 supply drum 5 accumulator 6 extruder 7 winder 10 core wire feeder 11 pulley 28 switch

Claims (1)

(57) [Scope of request for utility model registration] 1. A core wire supply, comprising: a supply for supplying a core; a core feeder for feeding the core from the supply onto a line; and an accumulator for temporarily accumulating the core sent by the core feeder in the line. When the core wire is sent out onto the line via the accumulator, a predetermined driving force is applied to the core wire feeder, and when the core wire is sent out on the line through the accumulator, An electric wire manufacturing apparatus, comprising: a switching device that performs switching control so as to apply a braking force to a feeder.