JPH0145106Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial field of application> The present invention automatically transfers insulated terminals in sequence, and when the terminals reach the position of the crimping die,
A device used for connecting a plurality of wires by simultaneously inserting and crimping bare conductor portions from which the end coating of a covered wire has been peeled off into the sleeve of the terminal,
Specifically, a large number of insulated terminals are arranged at predetermined intervals, each consisting of a small-diameter cylindrical part that covers the sheathed part of the electric wire, and a small-diameter cylindrical part that holds a highly conductive metal sleeve into which the bare end of the electric wire is inserted. a transfer device for sequentially feeding a terminal group connected body arranged and arranged and connected between the large diameter cylindrical parts via a connecting band; and whether a bare end of an electric wire is inserted into the sleeve of the insulated terminal. an optical sensor that detects this using transmitted light acting on the vicinity of the tip of the small diameter cylindrical portion, and a device that presses and deforms the small diameter cylindrical portion and the sleeve from the outside based on the insertion detection of the bare end by the optical sensor. The present invention relates to a continuous crimping device for a connected terminal group with an insulating coating, which is equipped with a crimping die that operates in a continuous manner.

<Prior Art> In this type of conventional general continuous crimping apparatus, the optical sensor is always kept in a detection operating state while the apparatus is in operation.

<Problems to be solved by the invention> However, in the case of the conventional device as described above, the thick wall in the direction of light transmission by the sensor is exposed to light on the peripheral wall of the small diameter cylindrical portion of the insulated terminal on the transfer direction side. When passing through the transmission position, there is a high possibility that the light will be blocked by the thick part and the sensor will malfunction, causing the crimping die to perform an unexpected crimping operation earlier than the predetermined timing. Since the small-diameter cylindrical portion and the sleeve have been pressed and deformed, it is no longer possible to insert the bare conductor portion of the wire into the sleeve, and the insulated terminal becomes a complete loss product. It had some flaws.

<Means for Solving the Problems> The purpose of the present invention is to eliminate such conventional drawbacks, and the terminal group connection body with insulation coating according to the present invention was devised to achieve such purpose. In the continuous crimping device described in detail at the beginning, the detection operation of the optical sensor is linked to the transfer device,
A length of time during which at least a thick portion in the light transmission direction of the peripheral wall of the small diameter cylindrical portion of each insulated terminal with a thickness that is twice or more thicker than the small diameter cylindrical portion passes through the light transmission position. This system is characterized by the fact that it is equipped with a control device that stops the operation at all times.

<Function> According to the device of the present invention having the characteristic configuration as described above, the thick portion of the peripheral wall of the insulating coated terminal that is sequentially transferred, where the transmitted light from the sensor may be blocked, is While passing through the transmission position, the sensor is always kept in a non-detecting state, and when the bare end of the wire is inserted into the sleeve, the sensor is activated as expected and the crimping operation is performed at a predetermined timing. This will lead to this.

<Examples> Examples of the present invention will be described below in detail based on the drawings.

5 to 7 show an example of an insulated terminal 1 to be crimped, and as shown in an enlarged view in FIG.
and a conductor made of a highly conductive metal (generally made of copper) into which the bare end conductor part b with the end coating of the electric wire A stripped is inserted and joined.
A medium-diameter cylindrical portion (corresponding to the small-diameter cylindrical portion in the claims) 1b that fits and holds the sleeve 2 therein, and further connected to a side of the medium-diameter cylindrical portion 1b opposite to the side on which the small-diameter cylindrical portion 1a is formed. The small diameter cylindrical portion 1c provided and this small diameter cylindrical portion 1
a bottom portion 1d formed on the outer end side of c, and between the small diameter cylindrical portion 1c and the medium diameter cylindrical portion 1b,
A stepped portion 1e is formed in the cylinder, and the wall thicknesses of the large, medium, and small diameter cylinder portions 1a, 1b, and 1c are made to be approximately the same thickness, and one end is expanded outward within the medium diameter cylinder portion 1b. The opened sleeve 2 is press-inserted to a position where its tip abuts on the stepped portion 1e to form an internal holding structure.

As shown in FIG. 5, a large number of insulated coated terminals 1 constructed in this manner are arranged side by side and connected integrally between the large diameter cylindrical portions 1a, 1a with a flat connecting band 5. The terminal group connected body 1A is integrally molded with a white transparent synthetic resin material in order to improve the transmission detection function of the optical sensor described later.

As shown in FIGS. 1 and 2, the connected body 1A of the group of insulated terminals connected by the connecting bands 5 is formed by a pair of male and female crimping dies in an automatic wire connecting machine. Towards position 3 and 4,
A feed drum 6, which is an example of a transfer device having a concave portion 6' formed in its outer circumference, sequentially transfers it while being guided over a gutter 7, and when it comes to the position of the pair of crimping dies 3 and 4, two 3 or the required number of wires A
When the electric wire made by twisting the bare end conductor part b with the covering part a stripped off is inserted into the sleeve 2, and its tip end is inserted into the small diameter cylindrical part 1c, the small diameter cylindrical part 1c
The light between the light emitter 8A and the light receiver 8B of the transmission type optical sensor 8 that acts on the light sensor 8 is blocked.
operates, and upon receiving the signal, the crimping dies 3,
4 automatically presses and deforms the medium-diameter cylindrical portion 1b and the sleeve 2 from the outside, crimping and clamping the electric wire inside the medium-diameter cylindrical portion 1b and sleeve 2 as shown in FIG. The cutting dies 9, 9' arranged at the front end of the cutting dies 9 and 9' also operate to cut the connecting strip 5 which is continuous to the outside thereof.

In the automatic wire splicing machine having such a structure and operation, the optical sensor 8 is linked to the feed drum 6, and the detector 11 detects the feed amount of the connected body by the drum 6, and the detector 11 detects the set feed amount. Timer 1 that operates for a limited time based on the detection of
The detection operation state and the detection operation stop state (non-operation state) can be automatically switched and controlled via a control device 12 consisting of 0 and 0.

Specifically, as shown in FIG.
Of the peripheral wall of the small diameter cylindrical portion 1b of each insulating coated terminal 1 in A, the thick portion 1H in the light transmission direction on the upper side in the transport direction is thicker than twice the wall thickness t of the small diameter cylindrical portion 1b. 1h (bias shaded area in FIG. 9) passes through the light transmission position of the sensor 8 as the set time limit operation time of the timer 10, and the sensor 8 is operated only during the time limit operation of the timer 10. Stop (OFF) the detection operation,
Otherwise, the connected body feed amount detector 1 is configured to maintain the detection operating state (ON) of the sensor 8
1 is set to be equal to the distance between the axes of adjacent terminals 1, 1 in the connecting body 1A, and the detection operation timing is set to be slightly earlier than the timing at which the rotation of the feed drum 6 stops. This is what I did.

Figure 4 shows each component 6, 8, 3, 4, 9, 9',
11 and 10 are operation timing charts.
Note that the terminal 1 to be crimped is not limited to the three-stage closed end terminal as shown in the above embodiment, but also the 10th terminal.
It may also be a two-stage closed-end terminal as shown in the figure.

Furthermore, the operation stop state (OFF) of the sensor 8 via the timer 10 may be set as shown by the dotted line in FIG. 4.

<Effects of the invention> As is clear from the detailed description above, according to the present invention, the sensor 8 is not always kept in the detection operating state, but at least By actively and intentionally stopping the detection operation while the thick portion 1h, which is likely to cause malfunction of the sensor 8, passes through the light transmitting position, the sensor 8 can be crimped in response to the sensor detection signal. It is possible to reliably avoid an unexpected crimping operation at an early timing of the operating crimping dies 3 and 4, and therefore, the original detection by the sensor 8, such as the detection of insertion of the bare end of the wire into the sleeve 2, can be avoided. The function can be performed appropriately and reliably, and continuous crimping work can be performed with no or very little terminal loss.

Moreover, since the operation control of the optical sensor 8 as described above is performed in conjunction with the connecting body transfer device 6, for example, whether or not the aforementioned thick portion 1h is at the light transmitting position is detected by another sensor. ,
The configuration of the control system is much simpler and more practical than the case where the control device 12 is operated based on the signal.

[Brief explanation of the drawing]

Fig. 1 is a front view for explaining the crimping work state, Fig. 2 is a partially longitudinal side view of Fig. 1, Fig. 3 is a block diagram, Fig. 4 is an operation timing chart, and Figs. 5 to 7. is a partially cutaway perspective view showing the product to be crimped, an enlarged cross-sectional plan view of the main part, and a sectional view taken along the line in FIG. 6; FIG. 8 is a partially cutaway perspective view of the crimped product;
FIG. 9 is an enlarged longitudinal sectional front view of the main part, and FIG. 10 is an enlarged longitudinal sectional side view of the main part showing another article to be crimped. 1 is a terminal with insulation coating, 1a is a large diameter cylinder part, 1b is a small diameter cylinder part, 2 is a sleeve, 3 and 4 are crimping dies,
5 is a connecting band, 6 is a transfer device, 8 is a light sensor,
12 is a control device, and 1A is a terminal group connector.

Claims (1)

[Scope of utility model registration request] Large diameter cylindrical part 1a that covers covering part a of electric wire A and electric wire A
A highly conductive metal sleeve 2 into which the bare end b of the
A terminal group connection in which a large number of insulating coated terminals 1 each having a small-diameter cylindrical portion 1b that is fitted and retained are arranged side by side at predetermined intervals, and the large-diameter cylindrical portions 1a are connected via a connecting band 5. A transfer device 6 for sequentially feeding the body 1A, and an electric wire A in the sleeve 2 of the insulated terminal 1.
Check whether the bare end b of the small diameter cylindrical part 1 is inserted or not.
The small diameter cylindrical portion 1a and the sleeve 2 are pressed and deformed from the outside based on the optical sensor 8 that detects the transmitted light acting near the tip of the a and the insertion detection of the bare end b by the optical sensor 8. In a continuous crimping device for connecting a group of insulated terminals, which is equipped with crimping dies 3 and 4 that operate in a continuous manner, the detection operation of the optical sensor 8 is linked to the transfer device 6, and the detection operation of each of the insulated terminals 1 is linked to the transfer device 6. The length of time during which at least the thick portion 1H in the light transmission direction of the peripheral wall of the small diameter cylindrical portion 1b, which is twice or more thicker than the wall thickness t of the small diameter cylindrical portion 1b, passes through the light transmission position. 1. A continuous crimping apparatus for a connected terminal group with an insulating coating, characterized in that a control device 12 is provided to stop the operation at any time.