JPS63157737A - Chain feeding device with straightening function - Google Patents

Abstract

PURPOSE:To feed a chain by straightening it at high speed by detecting a twist by inserting into a rotary guide the chain continuously fed with giving it a tension from a bobbin and rotating the bobbin in the opposite direction to the twist based on the detection signal. CONSTITUTION:The chain 10 causing a twist is continuously fed with giving a tension from a bobbin 12. This chain 10 is inserted into the guide hole provided inside a rotary guide 15 to constrain the rotation of the chain 10. The rotary guide 15 is thus rotated according to the twist of the chain 10. The twist is detected by detecting this rotation by photosensors 20A, 20A via a detection plate 19. The motor (figure omitted) built in a battery jar box 11 fitting said bobbin 12 rotatably is driven by this detection signal to rotate the bobbin 12 in the reverse direction to the twist of said chain 10. The chain 10 is thus fed to the processing machine of the succeeding stage with constant direction at all times.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a device for feeding a decorative chain to a processing machine for the next process while always feeding it in a fixed direction without twisting that occurs during compression deformation processing, etc. It is.

[Prior art and its problems]

Decorative chains are manufactured in long lengths using automatic chain-making machines, and when they are compressed using presses or rolls in order to have design variations, processing strains remain in the chain wire, causing kinks.

If a long chain with kinks is forced to be wound around a bobbin in an unreasonable manner, the chain may be deformed or destroyed. If the chain is to be fed to the next process while still being twisted, the twisting is removed manually each time. If this kind of twist is removed manually, it cannot keep up with the speed of the machining process in the next process, causing problems.

The present invention aims to solve the above-mentioned problems, and provides a chain feeding device that eliminates twisting of the chain and always feeds the chain in a fixed direction to the next process. .

[Means for solving problems]

In order to achieve the above object, in the present invention, a chain that has been twisted due to compression processing or the like is wound around a bobbin in that state. After that, the chain is continuously inserted under tension through a rotating guide with a guide hole that restrains the rotation of the chain supplied from the bobbin, and a sensor placed in the rotating guide follows the twist of the chain. By detecting twist and using the signal to drive the motor and rotating the bobbin in the opposite direction to the chain twist, twist is eliminated and the chain is always sent to the next process without twist.

〔Example〕

The present invention will be described in detail below based on the drawings.

1 to 4 are explanatory diagrams for explaining the present invention in detail, and FIG. 1 is a perspective view of the present apparatus.

In FIG. 1, the chain 10 is moved from a bobbin 12 attached to an electrical box 11, through a guide arm 16, through a rotating guide 15 attached to a detection device pedestal 14, and then through a guide pulley 16 for processing in the next process. supplied to the machine.

The detection device pedestal 14 is shown in the plan view of FIG.
This will be explained with reference to FIG. 3, which shows the -A cross section. The chain 10 passing through the guide arm 16 is restrained by a guide piece 17 inserted into a rotating guide 15 supported by a bearing.

The guide piece 17 has a guide hole 18 for guiding the chain 10, and the guide hole 18 has a cross section slightly thicker than that of the long chain to allow the long chain to pass freely. , if a twisted chain passes,
A rotational force is generated in the guide piece 17, and the rotation guide 15 rotates in the twisting direction of the chain 10.

When the rotation guide 15 rotates, the detection plate 19 attached to the rotation guide 15 is sensed by one of the two attached photosensors 20A and 20B.

The detection angle of the twist of the photosensors 20A and 20B is
It is adjustable by the sensor position and can be set freely.

The sensed signal is transmitted to the motor 21 shown in the sectional view of the electrical equipment box 11 in FIG. 4, and the motor 21 is driven in the direction opposite to the twist of the chain 10. The bobbin holder 25 is rotated by the large spur gear 24 attached to the bobbin rotating shaft 23 via the spur gear 22 attached to the motor 21, and the bobbin 12 attached to the bobbin holder 25 is rotated by the twist of the chain 10. Rotate in the opposite direction.

As a result, the pieces sent out from the guide piece 17 are
The tube 10 is always fed in a fixed direction to the processing machine for the next process.

The bobbin 12 is inserted into the bobbin shaft 26, and the bobbin is tightened with a Teflon packing 27 and a tightening nut 28.
By adjusting the frictional force, a constant tension can be applied to the chain 10.

In the embodiment, the photosensors 20A and 20B are used, but the present invention can also be implemented with a detector such as a micro switch or a proximity switch.

Furthermore, this device can be applied to a wide range of processing machines for the next process, such as compression presses, flexible processing machines, and surface cutting machines.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, it is possible to constantly sense the twist of the chain, correct it, and follow the speed of the processing machine for the next process. Furthermore, the chain is not forced to be wound around the bobbin in an unreasonable manner, and deformation, breakage, etc. can be avoided at the same time.

[Brief explanation of the drawing]

Figures 1 to 4 all show embodiments of the present invention; Figure 1 is a perspective view of the device, Figure 2 is a plan view of the detection device pedestal, and Figure 3 is the same as that of Figure 2. A sectional view showing the A-A cross section,
FIG. 4 is a sectional view showing the electrical equipment box. 10... Chain, 11... Electrical box, 12... Bobbin, 14...
...detection device pedestal, 15...rotation guide,
19...detection plate, 20A, 20B...
photo sensor. Figure 1 20B

Claims (1)

[Claims] A bobbin around which a long chain with twisting is wound is rotated by a motor, and a guide hole in which the chain is continuously supplied under tension from the bobbin, and the rotation of the chain is restrained, and the chain is inserted through the bobbin. A rotation guide rotates according to the twist of the chain, and the twist of the chain is detected by a detection plate and a sensor arranged on the rotation guide, and the motor is driven by the detected signal, and the twist of the chain is detected. A chain supply device with a straightening function, characterized in that rotation in the opposite direction is applied to the bobbin.