JPS5895911A - Device for treating end of wire - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for automatically processing the terminals of wires such as coated conductors, and in particular to a device capable of accurately inspecting the processing. 2. Description of the Related Art A so-called wire stripper is a well-known device that automatically cuts a wire to a predetermined length and strips the end of the wire. Furthermore, devices are known that automate the operations of sequentially automatically threading conductors, soldering, and crimping terminals at locations where the sheath has been stripped off. However, for example, to fully inspect wire ends with terminals crimped on them, conventionally it was done by visual inspection, which required manpower.
Moreover, it was not always possible to expect an accurate test.

Therefore, the applicant of this invention first filed a patent application in 1860
In applications such as No. 04, an inspection device for the terminal crimping location was proposed. However, if this inspection device is to operate accurately, the positioning of the object must also be accurate. Therefore, if you move the wire intermittently on a conveyor and try to accurately and automatically inspect the wire terminal during that time,
There is a need for more accurate positioning of the wire ends than with conventional means.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a wire end processing device that can accurately and reliably perform automatic inspection of wire end processing.

An embodiment of the present invention will be described in detail below with reference to the drawings. First, please refer to Figure 1.

1 is the main body of the wire end processing apparatus according to the embodiment of the present invention; 02 is a conveyor means installed in the left-right direction on the main body 1; The means 2 is configured to move intermittently one pitch S at a time, although details are not shown.

Further, the means 2 is provided with conveyor clamping claws 2a that open and close to the left and right at every pitch S, and grip the wire to be processed W1 in a direction perpendicular to the intermittent transfer direction of the means 2 (horizontal direction in the figure).

Reference numeral 3 denotes a known wire stripper attached to the means 2, which is configured to cut the coated conductive wire (wire) W wound around the reel 3a to a predetermined size and to strip off the coating at both ends thereof.

The cutting wire W1 processed in this way is as follows.

As shown in the figure, it is bent into a U-shape, its both ends are held by claws 2a, and the means 2 intermittently feeds it to the left in the figure.

4 is a wire stranding machine attached to the collar 8 on the downstream side of the means 2, and is a known wire stranding machine that separates the end portion of the wire W1, which has been intermittently transferred by the means 2 and has been stripped of its coating. This is done to prevent this from happening.

Reference numeral 5 denotes a known terminal punching machine attached to the stranding machine 4 on the downstream side of the means 2, and a continuous wire wound on a reel 5a is attached to the end portion of the wire W1 that has been intermittently transferred by the means 2. It is designed to automatically crimp terminals one by one.

Reference numeral 6 denotes a wire end non-inspection means attached to the terminal punching machine 5 on the downstream side of the means 2. In this embodiment, the means 6 is an optical means which will be described later. The means 6 contains clamping means 7.

The means 7 (see Figure 1 2.8 below) is a spring plate Tab7b.
are stacked one on top of the other, and are normally biased by their spring force in the direction of closing the vertical movable claws 7c, 7d at their tips. Claw 7C17d
Triangular notches 7e and 7f are provided at the center. An external rotary cam 7g having an oval cross section is held between the springs 7a and 7b. The rotation angle of the cam 7g is controlled by the movable cuff h. Further, each of the spring plates 7a and 7b has a wire W.
The window 71 is opened so that there is no problem in inspecting the terminal No. 1.

Reference numeral 8 denotes a sorting means attached to the means 6 on the downstream side of the means 2. The means 8 is provided with two sets of clamping claws 8a, and further has a power source 8.
90 degrees and 180 degrees clockwise from the position shown by b
It is constructed so that it can be selectively rotated at any time.

Thus, the above-mentioned means 2 is attached with a wire terminal processing means T, such as a wire stripper 3, a stranding machine 4, and a terminal punching machine 5, and furthermore, on the downstream side of the means 2, an inspection means 6 and a sorting means are attached. Means 8 is attached. Each of these components is operated during the stop time between the intermittent movements of the means 2. A known control means C is provided to control the timing of the operation of each of these components.

Next, details of the above-mentioned optical means of the inspection means 6 will be explained below together with details of the terminal crimping locations.

That is, in FIG. 4, a terminal 11 (in the example, it is a female terminal, and consists of a first grip part 11a, a second grip part Ilb, and a connection part 11c with a male terminal) is crimped to the end part 12 of the wire W1. In this case, the grip part 11
a securely grips the sheathing part 12a of the electric wire 12 all the way around and a certain length beyond the sheathing end;
The 7t grip portion 11b needs to securely grip the conductor portion 12b of the electric wire 12 over its entire circumference for crimping. However, when crimping the terminal, although it is rare, the gripping position may deviate from the above-mentioned gripping position, for example, the gripping portion 11a grips a part of the conductor portion 12b, or the gripping portion 11b grips a portion of the covering portion 12b.
Grasp part 2a, or hold part 11
A may not securely grip the covering portion 12a all around the circumference, resulting in terminal crimping failure. Therefore, in this embodiment, the terminal 11 of a certain shape and size is
The present invention is intended to optically inspect the terminal crimping condition of a terminal crimped electric wire crimped to an electric wire 12 having a constant stripping length, a constant outer diameter, and a constant diameter of the conductor portion 12b.

Please refer to Figure 5 below.

13 is a light source.

Reference numeral 14 denotes an extra color filter provided on the tip side of the light source 13 for the color of the outer periphery of the covering portion 12a of the terminal crimped electric wire to be inspected.

Reference numeral 15 denotes a known cylinder with a built-in condenser lens connected to the filter 14 via an optical fiber 16. The tip of this cylindrical body 15 is directed toward the terminal crimped portion of the terminal crimped electric wire to be inspected. The light from the cylindrical body 15 is designed to irradiate the terminal crimping portion along the light projection axis C1.

17 is a photoreceptor placed on the reflection optical axis C2 with respect to the light projection axis CI, and in FIG.
A large number of light receiving elements are arranged. Further, the photoreceptor 17 has a built-in known scanning means 17b that scans the light-receiving surface 17a in a fixed direction (the axial direction of the terminal-crimped electric wire) and converts it into a continuous waveform signal.

18 is a condensing lens arranged on the reflection optical axis C2 and between the terminal crimped electric wire and the light receiving surface 17a.

Reference numeral 19 is a memory of the computer, and the terminal 1 has a certain shape and size to ensure good terminal crimping condition of the terminal crimped electric wire.
1 and the electric wire 12 whose sheath has been stripped off by a certain length (see Fig. 6.7 (a)), the means 1
Signal to be output from 7b (see Figure 6.7 (b))
is recorded in advance as information.

20 corresponds to the length of the covering end in the output information from the means 17b, whether or not the output information from the means 17b is within the tolerance compared with the information recorded in the memory 19. This is a means for determining whether the portion is smaller than tl in FIG. 6(b) and t2 in FIG. 7(b) or not.

21 outputs defect information when, as a result of the determination in the means 20, in the output information from the means 17b, a portion corresponding to the length of the covering end is greater than tl or smaller than t2; This is defect information output means to be input to the control means C.

The effects of the above-mentioned embodiments will be described below.

First, the operator controls the control means C to determine the cutting length of the wire W1.
Input the length and number of strips to be stripped from both ends.

The wire stripper 3 processes the coated conductive wire W on the reel 3a as instructed in synchronization with the intermittent movement of the conveyor means 2 according to a command from the means C, and successively clamps both ends of the wire with the claws 2a.

Then, by the intermittent movement of the means 2, the claw 2a is moved to the stranding machine 4.
While stopping facing the conductor part 12b.

Further, as the means 2 advances, the claw 2a is moved to the terminal punch 5.
The terminal 11 is crimped onto the conductor portion 12b while the terminal 11 is stopped facing the conductor portion 12b.

Next, as the means 2 advances, while the claw 2a stops facing the inspection means 6, the terminal 11 is
The crimping condition of is inspected. At this time, a command to rotate the movable cuff h by a certain angle is output from the means C, and normally the second
The claws 7c and 7d change from the open state as shown in FIG. 3 by the cam 7g to the closed state as shown in FIG.
The crimping point of the terminal 11 can be positioned more accurately by the clamping from the left and right by the terminal a, the vertical clamping by the claws 7c and 7d, and especially by the clamping by the notches 7e and 7f. In this state, the inspection using the optical means described above is performed. This effect will be explained in more detail below.

In this state, the light source 13 provided in the means 6
When the light is emitted, only the light of colors extra to the coating color of the electric wire 12 passes through the filter 14, and the other colored lights are absorbed by the filter 14. and filter 14
The extra color light that has passed through passes through the fiber 16 and the cylindrical body 15, along the optical axis C1, and irradiates the terminal crimping portion of the terminal crimping electric wire.

Then, the reflected light travels along the optical axis C2, passes through the lens 18, and reaches the light receiving surface 17a. At this time, terminal 1 of the reflected light
1 and the conductor part 12b are reflected as the extra color light, but from the coating part 12a, since the color of the filter 14 and the coating color of the electric conductor 1jl12 are in the relationship of extra color, is hardly reflective. Therefore, of the reflected light, only the light from the hollow terminal 11 and the conductor portion 12b is transmitted to the light receiving surface 17.
It will reach a.

Then, the light is converted into an electric signal by the light receiving element on the light receiving surface 17a, and further converted into a continuous waveform signal by scanning in the axial direction of the terminal crimped electric wire by the means 17b. Furthermore, the signal is compared with two types of information previously recorded in the memory 19 (see Fig. 6.7 (b)), and the signal corresponding to the length of the covering end is determined to be tl. If the signal of the portion corresponding to the length of the coated end is smaller than tl and is smaller than t2, the means 20 determines whether the grip part 11b is a dog or not. There is a possibility that a part of the conductor part 12b is grabbed, or a part of the conductor part 12b is grabbed by the grip part 11a, and the means 21 issues defective information as a defective product.

Further, as shown in FIG. 8(a), even if the mutual positions of the terminal 11 and the electric wire 12 are good, the gripping portion 11a is attached to the covering portion 12a.
If you do not grip the entire circumference securely, use method 17.
The output signal from point b becomes as shown in FIG. 8 (b), and the portion corresponding to the length of the end of the coating becomes extremely large, and defect information is issued by means 21 as a defective product.

In the optical means described above, a color filter is used to distinguish the coated part from other metal parts.
Polarizing plates may be provided on each of the optical axes C1 and C2 so that their polarization directions are perpendicular to each other. In this way, the light that is almost completely reflected from the metal part is reflected while remaining relatively polarized, so the light received by the photoreceptor 17 becomes weaker, while the light that is diffusely reflected from the covered part is accurately polarized. Therefore, the light received by the photoreceptor 17 does not become so weak. Therefore, accurate inspection can be expected regardless of the color of the covered portion.

In addition, the ITV may be used to process the video to enable testing.

Thus, the terminal crimping point is inspected, and by successive steps of the means 2, one wire Wl is crimped by the two claws 8a of the means 8.
At this time, during the inspection by the means 6 of one terminal of the wire Wl, the defective information is detected by the means C.
If input is input to The wire Wl is dropped and stored in a defective product box (not shown).

If the wire W1 is not outputted with defective information, the means C rotates the means 8 by 90 degrees from the state indicated by the solid line in the figure, brings it to the position indicated by the chain line in the figure, opens both claws 8a, and moves the wire W1 to the next stage (not shown). transfer it onto the conveyor.

In addition to the above-mentioned embodiments, the present invention also includes, for example, the clamping means 7 biases the tip claws 7c and 7d in the direction of opening with its spring force,
It may be configured to close by rotating the inner cam.

Furthermore, for example, the clamping means 7 may be configured such that the upper and lower claws connected by the left and right shafts are urged to close by spring means, or may be forced to open and close by other dynamic means. In addition, the terminals to be inspected are not limited to those with terminals connected, but may be in other terminal states.
Therefore, the inspection means may also have other configurations corresponding thereto. Furthermore, the selection means may also be modified in other ways, and the technical scope of the present invention also includes replacement of each component with an equivalent within the scope of the technical idea of the present invention.

As described above, the present invention has the unique and remarkable effect of being able to automatically and reliably carry out the inspection after wire end treatment.

[Brief explanation of drawings]

The drawings all show an embodiment of the present invention; FIG. 1 is a partially cutaway overall perspective view, FIGS. 2 and 3 are perspective views showing the operating state of a portion, and FIG. 5 is a partial perspective view, and FIG. 4, 6, 7, and 8 are plan views for explaining the operation. W, W,...Wire, 2...Conveyor means, 2a
...Conveyor clamping claw, T...Wire end processing means,
6. ° Wire end uninspected means, 7. Clamping means, 8... Sorting means. Applicant ShinMaywa Industries Co., Ltd. Agent Tadashi Bengami (1 person) Figure 1

Claims (2)

[Claims] (1) A conveyor means for holding a wire and intermittently conveying it in a direction perpendicular to the wire, a wire end processing means attached to the conveyor means, and a wire end processing means attached to the downstream side of the conveyor means. and a sorting means attached to the downstream side of the conveyor means of the wire end uninspected means; A wire end processing device comprising clamping means that opens and closes the wire in a direction perpendicular to the transfer direction. (2) The gripping means includes a rotating cam that is biased by a spring force in a direction to close the gripping claws and opens the gripping claws against the spring force. 2. The wire end processing device according to item 1.