JPS5846431B2 - Metal wire winding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for forming metal wires along a carrier by periodically increasing and decreasing the rotational speed of a carrier table and changing the diameter of a metal wire winding falling from a winding drum. The present invention relates to a metal wire winding device that can create a beautiful coil shape.

In conventional winding devices of this kind, the carrier table was configured to rotate synchronously and at the same speed as the rotation of the winding drum, so the winding of the metal wire falling from the winding drum was The diameter of the rolled object is approximately constant, and when the rolled object falls along the carrier, if the rotation speed of the carrier table is constant, the direction in which the rolled object falls is also approximately constant, and the lower rolled object There is a bias in the degree to which the upper winding is overlapped on top, and the formed coil has an unsightly shape, like a cylinder cut diagonally, and has the disadvantage that it is wound roughly. there were.

Therefore, in order to improve the length of the tube, the carrier table rotates on its own axis and revolves around the center point, so-called planetary rotation. On the other hand, a device was devised in which the carrier was wound in a peritrochoid shape, but this required a special mechanism for rotating and revolving the carrier table, resulting in high equipment costs and a large space. It had the disadvantage of requiring

However, in order to solve the above-mentioned drawbacks, the present invention periodically changes the diameter of the metal wire windings by periodically increasing and decreasing the rotational speed of the carrier table, so that the diameter of the metal wire windings overlaps the lower windings. The degree of overlapping of the upper windings is made uniform to form a tight and beautiful coil.

In general, when a metal wire roll wound on a winding drum attempts to fall naturally onto a carrier table, its inner diameter tends to expand more than the outside diameter of the winding drum due to the inherent elasticity of the metal wire. However, when the carrier stand rotates in the same direction as the winding drum, this rotation exerts a force that tries to reduce the diameter of the wound material, and the faster the rotation speed, the greater this force becomes. By changing the rotation speed, it is possible to freely change the diameter of the wound material within the range from the diameter when it falls naturally to the diameter of the winding drum, and it is possible to form a coil with the desired inner diameter. As a result of various experiments based on speculation, it was found that the maximum speed of the carrier platform determines the inner diameter of the coil, and the minimum speed determines the outer diameter of the coil.

At that time, it has been found that the position of each falling roll shifts slightly as the rotational speed of the carrier table increases or decreases, and the degree of overlap of the upper rolls overlapping the lower rolls becomes approximately equal. It was.

The present invention has been made based on the above-mentioned discovery, and the specific configuration of the device of the present invention will be explained below with reference to the illustrated embodiments.

That is, 1 is a wire drawing machine that pulls out a metal wire B from a coil placed on a supply stand A and draws it to a constant diameter, and is driven by a motor 2 via a speed reducer.

Reference numeral 3 denotes a winding drum horizontally suspended on the base 1 of the wire drawing machine 1 and rotated by a motor 2 via a speed reducer. It functions to wind up and drop from the conical cap body 31 at the tip.

Reference numeral 4 denotes a carrier table for receiving the wound material of the metal wire B falling while being guided by the cap body 31 of the winding drum 3, and a carrier 5 serving as a guide for the formed coil is planted therein.

In addition, a plurality of carrier stands 4 are provided on a large-diameter turntable 6, so that the winding work is not interrupted even during the binding work of the formed coils, and the inner diameters of the coils are different. When forming a product, it is possible to select carriers 5 with different diameters.

Reference numeral I designates a DC motor for driving the carrier stand installed on the base 8. The drive of this motor horizontally rotates the friction roller 9, and horizontally rotates the carrier stand 4 whose outer periphery is in contact with this friction roller.

The base 8 is configured to slide back and forth by the operation of an air cylinder 10, and acts as a clutch to rotate the turntable 6 and move it backward when selecting a carrier base.

In addition, as in the case of the carrier stand 4, in order to improve work efficiency, two supply stands A are rotatably mounted on both ends of a plate A2 which is pivoted on the conveyor stand A1 so that the center can rotate horizontally. A slanted guide bar A4 is provided at the upper end of the guide so that the unprocessed coil transported by a crane or the like falls smoothly along the guide A3 of the supply stand A.

Regarding the settings of the maximum and minimum rotational speeds and switching times of the carrier table 4, since the rotational speed of the winding drum 3 is constant, when increasing or decreasing the rotational speed of the carrier table,
If the average rotational speed is not made to match the rotational speed of this winding drum, there will be disadvantages such as pulling down or sagging before a complete winding is completed.

Therefore, the number of rotations of the winding drum 3 is n1, the maximum number of rotations of the carrier base 4 corresponding to the inner diameter of the coil to be wound is nl, the minimum number of rotations corresponding to the outer diameter of the coil is n2, and each number of rotations is The setting must be made so as to approximately follow the relational expression n(t1+t2)=n1t1+n2t2, where times tl and t2 are respectively.

That is, if you want to manufacture a coil whose inner diameter and outer diameter are Dl and D2, respectively, find the maximum rotational speed nl corresponding to Dl and D2 from a table that plots the relationship between the diameter of the wound material and the rotational speed in advance. , the minimum rotational speed n2 is extracted, and the control voltage value of the DC motor 1 is set to a value corresponding to these rotational speeds n15n2 using a rotational speed setting device (not shown), and the maximum voltage value is applied. The time t1 for applying this t1 is set to a time that does not cause the wound material previously wound on the winding drum 3 to run out, and the time t2 for applying this tl and the minimum voltage value that is automatically determined based on the determination of tl. is set as the switching time of a timer (not shown).

In this 5, the dimensions of nynltn2 are times/second, 1
1 and 12 are seconds.

Next, in accordance with the above configuration of the present invention, specific usage, operation, and effects of the apparatus of the present invention will be explained with reference to the illustrated embodiments.

That is, the turntable 6 is rotated so that the carrier stand 4 having the carrier 5 corresponding to the inner diameter of the product coil comes to the winding position, the air cylinder 10 is operated to slide the base 8, and the friction roller 9 is moved. is brought into contact with the outer periphery of the carrier stand 4.

Next, when the power switch on the control panel is closed and current is passed through the motors 2 and 7 to drive each motor, the metal wire B of the coil placed on the supply stand A is fed into the wire drawing machine 1 by the drive of the motor 2. , the metal wire B that has been drawn to a predetermined diameter and processed on the winding drum 3 is wound up.

The metal wire wound several times on this drum turns into a wound object due to its own weight and falls onto the carrier stand 4 located directly below the drum. Since the rotation speed is increased/decreased while maintaining the relationship between number and time, the diameter of the rolled object that falls when the number of rotations is n1 is Dl and is wound up on the carrier 5, and when the number of rotations is n2 It becomes D2 and is wound up.

That is, a wound material with a diameter of Dl is wound once n i/j
The winding material having a diameter of The windings at the lower level also change, causing the lower windings to fall and the position of the upper windings to be lowered to shift.

Therefore, by repeatedly increasing and decreasing the speed of the carrier table, the overlapping positions of the wound articles are evenly distributed, and a beautiful and tight cylindrical coil is formed with no bias in the degree of overlapping.

As described above, according to the metal wire winding device according to the present invention, the carrier table that receives the metal wire wound by the winding drum is periodically rotated in a variable speed manner. By changing the diameter of the wound material and shifting the overlapping position of the material, a beautiful and tight coil can be formed. Unlike those used for winding in a peritrochoid shape, all the equipment can be controlled electrically, so the winding operation can be carried out smoothly with a simple mechanism and with few failures.
By determining the minimum number of revolutions, it is possible to manufacture a coil having substantially arbitrary inner and outer diameters, and therefore it is possible to provide a coil that meets the needs of the consumer.

[Brief explanation of the drawing]

The drawings illustrate embodiments of the present invention, and FIG. 1 is a full perspective view of the device of the present invention, FIG. 2 is a front view of the device, and FIG. 3 is a front view of the device.
FIG. 4 is a plan view of the same, FIG. 4 is a side view of the same, FIG. 5 is a graph showing the relationship between the number of rotations of the carrier stand and time, and FIG. 6 is a perspective view of a coil manufactured by the apparatus of the present invention. 1...Wire drawing machine, 2...Motor, 3.
... Winding drum, 4 ... Carrier stand, 5
...Carrier, 6...Turntable, I...DC motor, 8...Base,
9...Friction roller, 10...Air cylinder.

Claims (1)

[Claims] 1. A carrier table is provided below the winding drum which is horizontally suspended on the base and rotates independently of the winding drum in a manner that can increase and decrease the speed periodically. A metal wire winding device characterized in that a coil is formed by dropping a wound metal wire along a carrier provided on the carrier table. 2. The metal wire according to claim 1, characterized in that the method of driving the carrier table is a means of transmitting rotational force by rubbing the outer periphery of the carrier table with a friction roller rotated by a DC motor. winding device. 3. The metal wire winding device according to claim 1, wherein the carrier table is rotated at variable speed by changing the control voltage value of the DC motor described in the preceding paragraph. 2. The metal wire winding device according to claim 1, wherein the rotational speed of the DC motor is changed by operating a changeover switch of a timer.