JPS59185622A - Treatment device of contracting tube - Google Patents

Abstract

PURPOSE:To contrive to improve working accuracy as well as to elevate operation property remarkably by a method in which when the article to be worked approaches a hot blast-blowing exit, a controller detects said article and closes a operating circuit, and when the article goes away from the blowing outlet, the controller opens the operating circuit. CONSTITUTION:When an electric cable 16 is advanced through a passage b from the front opening side of a case 1, a switching operating plate 10' is pressed downwardly. Therefore, a voltage is applied to a heating element 4 and a blower 2, connecting a controller 10 to an electric source and hot blast is blown out from a blowing exit 4. The terminal part of the cable 16 is covered in press- welded state from outside, heating and contracting the contracting tube 15. In this case, the cable 16 and the contracting tube 15 are respectively situated in a specified relative position by a receiving seat 9, and this state is kept. After the heat treatment and working have been finished, the cable 16 is taken out from the case 1, whereby the press action for the switching operating plate 10' is released and then the heating element 4 and the blower 2 stop their operation. Thus, the operating property is remarkably elevated and the working accuracy is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a treatment apparatus for shrink tubes used for coating the ends of electrical parts, such as electric wires.

Conventionally, when processing the terminal end of an electric wire that connects to the terminal side of various electrical appliances, the end of the electric wire is made into a shrink tube (a tube that shrinks by heating: a product) to improve appearance and improve safety such as insulation. It is well known that the shrink tube is coated by heat and pressure bonding using a shrink tube, etc., but conventionally, when heating the shrink tube, one hand holds the terminal end of the wire and the other hand is used to heat the shrink tube using an industrial dryer. Because hot air was blown onto the shrinkable tube by holding it, it was not only extremely difficult to work with, but also had drawbacks such as the shrinkable tube slipping out of its designated position and reducing machining accuracy. There were also problems in terms of

The present invention has been made based on the above-mentioned circumstances, and its purpose is to equip a case with a hot air blower consisting of a blower and a heating element, and to install a hot air blower in front of the hot air outlet of the hot air blower. A controller is provided to control the opening and closing of the operating circuit of the hot air blower.1 When the workpiece approaches the hot air outlet, the controller senses the workpiece and closes the operating circuit, causing the workpiece to The structure is configured to open the operating circuit when the workpiece leaves the hot air outlet, so hot air is automatically blown out by simply setting the workpiece in front of the hot air outlet, and the workpiece is automatically blown out after heat treatment is completed. The hot air blowing can be stopped simply by removing the object from the set position, and the hot air blowing operation can be accurately controlled.This not only greatly improves work efficiency, but also significantly improves processing accuracy. Moreover, the present invention aims to provide a shrinkable tube processing device which is also excellent in safety.

The structure of the present invention will be described with reference to an embodiment shown in the drawings. Reference numeral 1 denotes a case, and a blower 2 having a blower fan 2a in a space a at the rear (right side in FIG. 1) of the case 1. is installed via a pedestal 3, and a cylindrical heating element 4 that comes from a heater or the like is arranged in front of it in the air blowing direction, and these blower 2 and heating element 4 constitute a hot air blower 5. ing. 6 is an air convergence plate. 7 is an air intake port, and a dust filter 8 is installed inside the air intake port. Although not shown, the inner peripheral surface of the case 1 may be filled with a heat insulating material.

By the way, the front opening of the cylindrical heating element 4 is a hot air outlet 4.
A catch seat 9 for holding the workpiece in the set position is formed at a position near the front of '. A controller 10 made of, for example, a microswitch is embedded in one side of the seat 9. Reference numeral 10' denotes a switch actuation plate of the controller 10, which is formed of an elastic member such as a leaf spring, and has its free end facing the entry path of the workpiece.

11 and 11' are stopper guides for the workpiece, and these stopper guides 11 and 11' are connected to the heating element 4.
and the seat 9, and are fixed to both left and right sides of the hot air outlet 4'.

FIG. 4 is an operational circuit diagram of the hot air blower 5 in the apparatus of the present invention, in which 12 is a temperature fuse or thermostat;
3 is a current fuse, and 14 is a power supply.

In the configuration as shown in the paper, the electric wire 16 with the shrink tube 15 inserted into the end of the workpiece, for example, is passed from the front opening 1' side of the case 1 all the way through 2 to the position immediately in front of the hot air outlet 4'. When advanced, the electric wire 16 comes into contact with the switching actuation plate lo' of the controller 10 and presses the actuation plate 10' downward. Therefore, the controller 10 becomes conductive, the operating circuit is closed, and voltage is applied to the heating element 4 and the blower 2, so that the heating element 4 and the blower 2 automatically start operating.

As a result, hot air is blown out from the air outlet 4', so that the shrinkable tube 15 is heated and contracted, so that the electric wire 1
The end portion of No. 6 is covered by being crimped from the outside.

At this time, since the electric wire 16 and the shrinkable tube 15 are held in a predetermined relative position by the seat 9, the shrinkable tube 15 will never come off the stain line from the predetermined position. It is always covered in the correct position.

By the way, if the heating element 4 generates abnormal heat for some reason and the temperature fuse or thermostat 12 is shut off, the heat remaining in the heating element 4 and its surrounding area will have a negative effect on the surrounding area. However, since the blower 2 is installed in front of the temperature fuse or thermostat 12, even if the temperature fuse or the like 12 is shut off, the voltage of the blower 2 will remain applied, so the above The residual heat is quickly dissipated to the outside by the air blower 2, and there is no adverse effect due to the residual heat.

After the heat treatment process is completed as described above, when the electric wire 16 is taken out of the case 1, the suppressing action on the switch ink actuating plate 10' is released and the actuating circuit is opened, and the heating element 4 and the blower 2 are Stop operation.

Incidentally, as shown in FIG. 5, a timer 17 may be provided in the operating circuit so that the heating element 4 and the blower 2 are operated only for the time set by the timer 17.

17' is a b contact.

Further, as shown in FIG. 6, a motor 18 may be provided in the operating circuit and known technical means for moving or rotating (or moving and rotating) the workpiece may be added as required, thereby allowing the workpiece to be moved or rotated. It is also possible to automatically set the workpiece, uniformly heat the workpiece, or discharge the workpiece after heat treatment.

Furthermore, as shown in FIGS. 4 to 6, the blower 2 may be operated after the heating element 4 generates sufficient heat.

As described above, the present invention is equipped with a hot air blower consisting of an air blower and a heating element in a case, and a controller is provided in front of the hot air outlet of the hot air blower to control opening and closing of the operating circuit of the hot air blower. The controller senses the workpiece and closes the operating circuit when the workpiece approaches the hot air outlet, and opens the operating circuit when the workpiece moves away from the hot air outlet. By simply setting the object in front of the hot air outlet, hot air is automatically blown out and heat treatment can be performed immediately.After the heat treatment process is completed, hot air blowing can be stopped by simply removing the workpiece from the set position. This makes it possible to accurately control the hot air blowing operation during heat treatment processing.
It is an extremely useful new product that greatly improves the performance, saves labor, and significantly improves machining accuracy.It is also highly safe, has a simple structure, and can be manufactured at low cost. It is effective.

[Brief explanation of the drawing]

The drawings show an embodiment of the shrink tube processing apparatus according to the present invention, in which Fig. 1 is a longitudinal side view, Fig. 2 is a longitudinal front view, and Fig. 3 is a heat treatment process of a shrink tube by the apparatus of the present invention. Figures 4 to 6 are respectively operating circuit diagrams. In the figure, 1 is the case, 2 is the blower, 4 is the heating element, 5 is the hot air blower M, @, 10 is the control vessel. Figure 1 Figure 4 Figure 5 Figure 6

Claims (1)

[Claims] A hot air blower consisting of a blower and a heating element is installed in the case, and a controller is provided in front of the hot air outlet of the hot air blower to control the opening/closing of the operating circuit of the hot air blower, so that the workpiece is connected to the hot air outlet. A shrinkable tube processing device characterized in that a controller senses a workpiece and closes an operating circuit when the workpiece approaches the hot air outlet, and opens an operating circuit when the workpiece moves away from a hot air outlet.