JP2003134626A - Jacketed wire stripping apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a jacketed wire stripping apparatus that is compact, improves throughput, and increases reliability in detecting the rubber stopper. SOLUTION: The jacketed wire stripping apparatus has a detecting means 7 that detects the rubber stopper 4 attached to the jacketed wire termination 1a, and a stripping section 5 that strips the jacket layer of the jacketed wire termination 1a. The detecting means 7 comprises a transmission photo-electric sensor having a light-emitting section 7a and a light-receiving section 7b and is integrated with the stripper section 5. The light irradiated from the light- emitting section 7a irradiates the jacketed wire termination 1a inserted in the stripping section 5.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an insulated wire stripping apparatus for stripping a coating layer at an end of an insulated wire to which a rubber plug is attached, in manufacturing a wire harness. [0002] In the manufacture of wire harnesses, there is a step of stripping a coating layer of a wire end of a covered wire and crimping a terminal to an exposed conductor. If the wire end needs to be waterproof, attach a rubber stopper to the wire end in advance,
Thereafter, the coating layer is stripped, and the terminal is crimped so as to swage the rubber stopper. When the terminal crimped to the wire terminal having the rubber plug is connected to the mating connector, the rubber plug closes the terminal insertion opening of the connector, and the terminal can be connected to the connector in a watertight manner. Conventionally, when a terminal is crimped by stripping a covering layer of an electric wire terminal to which a rubber stopper is attached, a process of confirming whether or not the rubber stopper is attached, and stripping the covering layer and crimping the terminal are continuously performed. was there. The wire harness manufacturing equipment used in this step is provided with a rubber plug detection station in front of the coated wire stripping device.
This rubber stopper detection station is equipped with a detector that detects the rubber stopper attached to the end of the electric wire, and this detector uses a reflective photoelectric sensor, and reflects the light from the light emitting unit with the rubber stopper. The rubber stopper is detected by detecting the reflected light at the light receiving unit. [0004] However, the above-mentioned wire harness manufacturing equipment has the following problems. 1) Since a dedicated station for detecting a rubber stopper is provided in the manufacturing equipment to check whether or not the rubber stopper is attached, the equipment becomes larger and the throughput decreases. 2) The rubber stopper detector uses a reflection-type photoelectric sensor, irradiates the rubber stopper with light, detects the reflected light, and detects the rubber stopper attached to the electric wire. Therefore, the irradiation light must be irradiated at a pinpoint (for example, about 1 mm in diameter) so as to irradiate only the rubber stopper, and since the direction of the reflected light is slightly changed by the shape of the rubber stopper, the reflected light is It is necessary to finely adjust the position of the light receiving section. Therefore, it is difficult to increase the reliability of detection of the rubber stopper. SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has a detection means for detecting a rubber plug attached to an end of a covered electric wire, and a coating layer for the end of the covered electric wire. And a strip section for stripping the stripped wire strip, wherein the detecting means comprises a transmission type photoelectric sensor having a light emitting section and a light receiving section, and is integrated with the strip section, and irradiation light from the light emitting section is applied to the strip section. And irradiating the insulated wire end inserted into the wire. The present invention has been obtained as a result of intensive experimentation. That is, the detecting means for detecting the rubber stopper is a transmission type photoelectric sensor (the light emitted from the light emitting unit is blocked by the object to be detected, and the amount of light received by the light receiving unit (the amount of transmitted light) changes, so that the object to be detected is detected. ), The rubber stopper is detected by the degree of light shielding of the light applied to the end of the covered electric wire, in other words, by the amount of unshielded light received. Since the amount of received light does not change sensitively depending on the position of the light receiving section, it can be detected with higher reliability than detection using reflected light. Further, the detecting means for detecting the rubber plug is integrated with a strip portion for stripping the coating layer of the coated electric wire terminal,
The irradiation light from the light emitting unit irradiates the end of the covered electric wire inserted into the strip unit, so that the production equipment can be made smaller than when a dedicated station is provided and the rubber stopper is detected, and the rubber stopper is used. Can be performed almost simultaneously with the stripping step of the coated electric wire terminal, so that the throughput can be improved. Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a partial schematic plan view showing one embodiment of a coated electric wire strip device according to the present invention. The coated electric wire 1 is gripped and positioned by the chuck 3 of the electric wire gripping portion 2. 4 is a coated wire terminal 1a
It is a rubber stopper attached to. On the right side of the electric wire gripping portion 2, a strip portion 5 for stripping the coating layer of the coated electric wire terminal 1a is disposed so as to be movable left and right. The strip portion 5 has a pair of strip blades 6 that open and close. The present embodiment is different from the conventional example in that a detecting means 7 for detecting the rubber plug 4 attached to the covered electric wire 1 is provided on a surface of the strip portion 5 facing the electric wire gripping portion 2. It is. The detecting means 7 includes a light emitting unit 7a
And a transmission type photoelectric sensor having a light receiving portion 7b. The coated electric wire terminal 1a is irradiated with the irradiation light 8a from the light emitting portion 7a, and the unshielded light 8b is received by the light receiving portion 7b. Then, the rubber stopper 4 detects the rubber stopper by blocking the irradiation light 8a and reducing the amount of received light. FIG. 2 is a partial perspective view of the strip section 5. In FIG. 2, the pair of strip blades 6, 6 are in an open state, and the coated electric wire terminal 1a to which the rubber plug 4 is attached is located between the light emitting unit 7a and the light receiving unit 7b, and the pair of strip blades 6, 6. It is inserted and placed between. The detection of the rubber plug 4 attached to the insulated wire 1 and the stripping of the covering layer of the insulated wire terminal 1a are performed as follows using the insulated wire stripping apparatus. First, as shown in FIG. 1, the coated wire terminal 1 a is gripped by the chuck 3 of the wire gripping portion 2, and the surface of the strip portion 5 facing the wire gripping portion 2 is located at a position A separated from the coated wire terminal 1 a. Thus, the pair of strip blades 6, 6
Open. Next, the strip part 5 is moved to the left, and the surface of the strip part 5 facing the electric wire gripping part 2 is located at the position B. In this state, the rubber plug 4 of the coated electric wire terminal 1a is located between the light emitting unit 7a and the light receiving unit 7b, and the coated electric wire terminal 1a is located between the pair of strip blades 6,6. Next, the pair of strip blades 6, 6 are closed, and the pair of strip blades 6, 6 sandwich the covering layer of the covered electric wire terminal 1a so as to bite, and emit light from the light emitting unit 7a to the rubber stopper 4. Irradiation and non-shielded light are received by the light receiving unit 7b, and the rubber stopper 4 is detected by a decrease in the amount of received light. Then, the strip part 5 is moved rightward, and the surface of the strip part 5 facing the electric wire gripping part 2 is returned to the position A. During this time, the coating layer of the coated electric wire terminal 1a is stripped by the pair of strip blades 6,6. In the present embodiment, since the detecting means 7 of the rubber stopper 4 is composed of a transmission type photoelectric sensor, the rubber stopper can be detected with high reliability. The detecting means 7 for the rubber stopper 4
Is attached to the surface of the strip portion 5 facing the electric wire gripping portion 2 and is integrated, so that there is no need to provide a separate station for detecting the rubber plug 4, so that the wire harness manufacturing equipment can be reduced in size and the rubber The step of detecting the plug 4 and the step of stripping the coating layer of the coated electric wire terminal 1a can be performed almost simultaneously, and the throughput is improved. The present embodiment is an example embodying the present invention, and does not limit the technical scope of the present invention. As described above, according to the present invention, the wire harness manufacturing equipment can be reduced in size, the throughput can be improved, and the reliability of detecting the rubber plug attached to the insulated wire terminal can be improved. There is an excellent effect that becomes higher.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partial schematic plan view of one embodiment of a coated electric wire strip device according to the present invention. FIG. 2 is a partial perspective view of the strip section of the embodiment. [Description of Signs] 1 Insulated wire 1a Terminal 2 Wire gripping part 3 Chuck 4 Rubber plug 5 Strip part 6 Strip blade 7 Detecting means 7a Light emitting part 7b Light receiving part 8a Irradiation light 8b Shielding light

Claims (1)

Claims: 1. An insulated wire stripping apparatus having a detecting means for detecting a rubber plug attached to an insulated wire end and a strip section for stripping a coating layer of the insulated wire end. The means comprises a transmission type photoelectric sensor having a light emitting portion and a light receiving portion, and is integrated with the strip portion, and irradiation light from the light emitting portion irradiates a coated electric wire terminal inserted into the strip portion. Wire stripping equipment.