JP2592326B2 - Inspection equipment for wire termination - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) The present invention transfers an electric wire terminal, which has been subjected to a coating stripping process to expose a core wire, along a transfer path using a movable holding / moving means. On the other hand, regarding the wire terminal processing state inspection device that determines the quality of the coating stripping process using a sensor provided on the transfer path, particularly, it is possible to accurately determine the quality of the coating stripping process using the sensor. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal processing state inspection device capable of appropriately adjusting a transfer route of a wire terminal so as to be able to do so.

(Conventional technology and its problems) Processing to cut electric wires (hereinafter referred to as "electric wire cutting processing")
A process of stripping the sheath of the cut wire end (hereinafter referred to as “coat stripping process”), and a process of crimping the terminal to the stripped portion (hereinafter referred to as “terminal crimping process”). In an automatic terminal crimping device (for example, Japanese Patent Publication No. 60-32314) that performs the harness manufacturing process continuously and automatically,
As an apparatus for inspecting whether or not the coating stripping process has been performed well, there is an apparatus disclosed in, for example, Japanese Patent Application Laid-Open No. 61-154412.

FIG. 14 is a schematic explanatory view showing the device. In this automatic terminal crimping device, the wire end 2 subjected to the wire cutting process and the coating stripping process is transferred in the R direction indicated by the solid line arrow while being held by the clamp 3 so that the terminal crimping process is performed. It is configured. In this case, since the clamp 3 is configured to be movable only in the one-dimensional direction indicated by the arrow R, the transfer path of the wire terminal 2 is such that the tip of the wire terminal 2 always passes on the transfer path 7. It is uniquely defined. Also, a pair of photoelectric switches 8a and 8 for detecting the passage of the bare wire 4 and the residual covering 5 of the wire terminal 2 transferred along the transfer path 7 respectively.
b is above the transfer path of the bare core wire section 4 and the residual covering section 5
, Respectively, above the transfer path. Each of the photoelectric switches 8a and 8b includes a light emitter and a light receiver, and the light emitted from the light emitter is reflected by the surface of the bare core wire portion 4 and the surface of the residual covering portion 5, respectively. Then, a detection signal is generated. Since these detection signals continue while the reflected light is received, the light receiving time thereof corresponds to the time of passing through the bare core part 4 and the residual covering part 5, respectively. That is, the bare core wire portion 4
When the signal passes through the effective detection range of the photoelectric switch 8a, a detection signal whose length corresponds to the passage time of the bare core wire section 4 is output from the photoelectric switch 8a, while the residual covering section 5 is connected to the photoelectric switch 8b. , A detection signal whose length corresponds to the time of passage through the residual covering portion 5 is output from the photoelectric switch 8b.

The detection signals derived from the photoelectric switches 8a and 8b in this manner are supplied to a processing circuit (not shown) as a bare core wire part passing signal and a residual covering part passing signal, respectively.
It is used for judgment of stripping quality. Then, in the processing circuit, the time when the bare outer core wire portion 4 passes over the photoelectric switch 8a from the stripped end portion passing signal, that is, the width of the bare outer core wire portion 4 and the remaining coating portion 5 The time required to pass over the switch 8b, that is, the width of the residual covering portion 5, is determined. Further, the difference between the two is obtained, and the difference is compared with a predetermined value, and it is determined whether or not the stripping process has been executed reliably. That is, if the difference is larger than the predetermined value, it is confirmed that the stripping process has been executed reliably, whereas if the difference is opposite, a defect of the stripping process is detected.

As can be understood from the above, in order to accurately determine the quality of the stripping process by the terminal processing state inspection device,
The photoelectric switches 8a and 8b need to be accurately arranged above the transfer path of the bare core wire section 4 and above the transfer path of the residual covering section 5, respectively. For example, as shown in FIG. 15, when the photoelectric switch 8a is disposed over the transfer path of the bare core section 4 and over the transfer path of the residual covering section 5, the bare core wire is placed on the photoelectric switch 8a. Not only the part 4 but also a part of the residual covering part 5 passes at the same time, and it is unclear which of the signal output from the photoelectric switch 8a is the bare core part part passing signal or the residual covering part passing signal. Inspection becomes impossible.

Therefore, in order to accurately determine the quality of the stripping process by the terminal processing state inspection device, the photoelectric switches 8a and 8b are disposed above the transfer path of the bare cored wire section 4 and above the transfer path of the residual covering section 5, respectively. The photoelectric switches 8a, 8
It is necessary to adjust the position of b.

The adjustment is performed as described below. First, an electric wire is set in the automatic terminal crimping device, and a test mode command is given from the operation unit. Then, for that wire,
A one-cycle harness manufacturing process consisting of wire cutting, sheath stripping, and terminal crimping is performed.
When the wire terminal 2 moves on the transfer path 7 in FIG. 14, the quality of the stripping process is detected by the photoelectric switches 8a and 8b, and the result is displayed on, for example, a CRT display. Therefore, the worker visually judges the quality of the stripped state of the actual manufactured harness, and judges the judgment result and CRT.
Compare the result on the display with the photoelectric switch
It is determined whether or not the position adjustment of 8a and 8b is good. That is, if the determination result by the operator matches the display result on the display, it is determined that the position adjustment of the photoelectric switches 8a and 8b is good, and if not, it is bad. When it is determined that the position adjustment of the photoelectric switches 8a and 8b is defective, the operator manually adjusts the positions of the photoelectric switches 8a and 8b appropriately and then gives the test mode command again. As a result, while the one cycle of the harness manufacturing process is repeated again, the quality of the stripping process is displayed on the CRT display. In this way, the operator again determines the quality of the position adjustment of the photoelectric switches 8a and 8b based on the visual stripping result of the stripping processing state and the display result on the display, and until a good position adjustment result is obtained. Repeat the above operation. Thus, finally, the positions of the photoelectric switches 8a and 8b are adjusted.

However, in such a position adjustment method, the above operation is generally repeated a plurality of times to complete the position adjustment of the photoelectric switches 8a and 8b, and the terminal crimping process is performed each time the operation is repeated. Since the harness is manufactured, there has been a problem that wires and terminals are wasted.

(Object of the Invention) The present invention has been made to solve the above-mentioned problem, and an electric wire capable of adjusting a transfer route of an electric wire with respect to a sensor of a terminal processing state inspection device without wasting electric wires and terminals. To provide a terminal processing state inspection device.

(Means for Achieving the Object) In order to achieve the above object, the present invention provides an electric wire terminal that has been subjected to a coating stripping process to expose a core wire to a transfer path using a movable holding / moving means. In the wire terminal processing state inspection device that determines the quality of the coating stripping processing state with a sensor provided on the transfer path while transferring along the
The holding / moving means is configured to be movable in a two-dimensional direction and to be able to reciprocate in a direction crossing the sensor position, and the wire terminal is moved along a transfer path corresponding to transfer path data stored in a memory. And a transfer path correcting means for correcting the transfer path data. When the wire terminal is transferred across the sensor position, the quality of the coating stripping is determined based on a signal output from the sensor. And a stripping quality determination unit having a display unit for displaying the determination information, and when the content of the transfer route data is sequentially corrected by the transfer route correction unit during the transfer route adjustment operation, the correction of the correction is performed. Control means for transferring the wire terminal across the sensor position by the holding / moving means each time.

(Embodiment) A. Outline of terminal processing state inspection apparatus FIG. 3 is a schematic explanatory view showing a terminal processing state inspection apparatus as one embodiment according to the present invention. As shown in the figure, this terminal processing state inspection apparatus includes photoelectric switches 8a and 8
b. Stripping quality determination means 1 including b, and holding / moving means 3 capable of moving in two-dimensional directions (P, Q, R, and S directions) while holding the wire terminal 2. This is basically the same as the conventional automatic terminal crimping apparatus.

More specifically, the third switches are provided for the photoelectric switches 8a and 8b.
In the figure, an electric wire cutting / coating stripping section exists in the S direction, and a terminal crimping section exists in the R direction. Then, the wire terminal 2 that has been subjected to the wire cutting process and the coating stripping process in the wire cutting and stripping process unit is transported in advance stored in a memory (not shown) while being held by the holding / moving means 3. R along the transfer route 7 corresponding to the route data
After passing over the photoelectric switches 8a and 8b in the direction, it is transferred as it is to a terminal crimping processing unit and the terminal is crimped to the bare core portion 4 of the electric wire terminal 2.

The stripping pass / fail determination means 1 includes a set of photoelectric switches 8a for detecting the bare sheath 4 and the residual covering portion 5 of the wire terminal 2 transferred along the transfer path 7 by the holding / moving means 3, respectively. 8b, and a processing circuit (which will be described later in detail) that determines whether or not the stripping is successful based on detection signals derived from the photoelectric switches 8a and 8b.

FIG. 4 shows an arrangement in the case of using a diffuse reflection type as the photoelectric switches 8a and 8b, and FIG. 5 shows an arrangement in the case of using a facing type. These FIGS. 4 and 5
The figure shows the transfer path 7 from the right (R direction) side to the left (S
This is a drawing of the electric wire end 2 held by the holding / moving means 3 when looking at the (direction) side. In the illustrated case, the electric wire end 2 has reached a position facing the photoelectric switches 8a and 8b.

As shown in FIG. 4, in the case of the diffuse reflection type, each photoelectric switch 8a, 8b is composed of one switch unit A, B, respectively. It is arranged above the transfer path and above the transfer path of the residual coating portion 5, respectively. Each of the switch units A and B includes a light emitter and a light receiver, and light 9a, 9
b is reflected on the surface of the bare core wire portion 4 and the surface of the residual coating portion 5, respectively. When the light receiver catches the reflected light, it generates a detection signal. That is, when the bare core portion 4 passes over the photoelectric switch 8a, a detection signal whose length corresponds to the time of passage of the bare core portion 4 is output from the photoelectric switch 8a, while the residual covering portion 5 When passing over the photoelectric switch 8b, a detection signal whose length corresponds to the time of passage through the residual covering portion 5 is output from the photoelectric switch 8b.

Also, as shown in FIG. 5, in the case of the opposing type, the photoelectric switches 8a and 8b are respectively a pair of a projector / receiver A1, A2 and B
It consists of 1.B2. These transmitter / receiver pair A1
A2 and B1 · B2 are arranged opposite to each other so that the optical axes coincide with each other across the transfer path of the bare core wire section 4 and the transfer path of the residual covering section 5. Since the optical axes are coincident, the lights 9a and 9b emitted from the projectors A1 and B1 always emit light A2 and B2.
Respectively, but as shown in FIG.
When the residual coating 5 blocks the light 9a, 9b, the light receivers A2, B2 generate a detection signal. These detection signals continue while the bare core part 4 and the residual covering part 5 pass over the photoelectric switches 8a and 8b, respectively, so that their lengths are the same as in the case of FIG. Residual coating 5
It corresponds to the time of passing.

The detection signals derived from the photoelectric switches 8a and 8b in this way are given to a processing circuit described later as a bare core wire part passing signal and a residual covering part passing signal, respectively, and are used for determining whether or not the stripping is good. You.

FIG. 6 is a schematic block diagram showing such a processing circuit, and the waveforms of the respective parts are shown in the waveform diagram of FIG. Processing circuit 10, a clock generator 11 for generating a clock C shown in Figure No. 7 (a), the residual coating portion passing signal from the bare core wire portion passes signals S ₁ and the photoelectric switch 8b from the photoelectric switch 8a
AND gates 12a to each AND processing and clock C and S _2, 12
b, counters 13a and 13b for counting the outputs of the AND gates 12a and 12b, respectively, and a comparison operation circuit 14 for comparing the output count values of the counters 13a and 13b. Functions as determination means. In addition,
Although not shown, a display unit for displaying output count values of the counters 13a and 13b as determination information is provided for the processing circuit 10 for adjustment work by an operator or the like (to be described in detail later).
It is provided in.

B. Judgment of pass / fail of coating stripping processing Next, the judgment processing of pass / fail of coating stripping processing performed by the terminal processing state inspection apparatus in the normal operation mode of the automatic terminal crimping apparatus will be described. When the coating stripping process is completed, the wire terminal 2 is moved and adjusted in the directions indicated by the arrows P and Q by the wire holding / moving means 3 based on the above-mentioned transfer route data, and the tip of the wire terminal 2 is moved as shown in FIG. It is aligned at a position that matches the transfer path 7. Thereafter, the wire terminal 2 is transported in the R direction while the tip of the wire terminal 2 is moved along the transport path 7 while being held by the holding / moving means 3. As a result, the bare core wire portion 4 of the wire terminal 2
And residual coating portion 5 photoelectric switch 8a, the upper 8b correctly passing each photoelectric switch 8a, bare core part pass signal S ₁ and the residual cover portion passes the signal S ₂ from 8b are output during its passage through . Then, peeling quality is determined these bare core wire portion passes signals S ₁ and the residual cover portion passes the signal S ₂ is supplied to the processing circuit 10. Here, the details will be described separately for the case where the coating stripping is good and the case where the coating stripping is bad.

If the coating peeling is good, denuded core part passes signals S ₁ derived from the photoelectric switch 8a is as shown in solid line in Figure No. 7 (b), residual coating portions pass signal derived from the photoelectric switch 8b S ₂ is as shown in Figure No. 7 (d). Double pass signal
The time widths of S ₁ and S ₂ correspond to the bare core wire portion 4 shown in FIG.
And the width of the residual covering portion 8.

AND gate 12a is Figure 7 clock signal C and FIG. 7 (b) solid denudation core part passes signals S ₁ and the receiving and AND of (a)
Processing, and outputs a signal S ₃ shown in FIG. 7 (c) the solid line. The AND gate 12b receives the clock signal C and a seventh view of FIG. 7 (a) receiving a residual coating portions pass signal S ₂ of (d) and AND processing, the signal S ₄ shown in FIG. 7 (e) Is output. These AND
The number of pulses included in the output signals S ₃ and S ₄ of the gates 12 a and 12 b is proportional to the time width of each of the passing signals S ₁ and S ₂ .

These pulse numbers are counted by the counters 13a and 13b, respectively, and the count value is given to the comparison operation circuit 14. The comparison operation circuit 14 compares the two count values and determines whether the difference is larger than a predetermined value. When the difference is larger than the predetermined value, it is found that there is a sufficient difference in the width between the core wire portion and the coating portion, and that the coating stripping was successfully performed. Therefore, in this case, the comparison operation circuit 14
Outputs a determination signal indicating good peeling. On the other hand, when the difference is equal to or less than the predetermined value, it can be seen that there is no sufficient difference in the lateral width between the core wire portion and the coating portion, and the coating is not stripped satisfactorily. Therefore, in this case, the comparison operation circuit 14
Outputs a determination signal indicating a peeling failure. For example, if zero is most simply selected as the predetermined value, the quality of stripping is determined based on whether or not both count values are equal. Of course, an appropriate predetermined value may be set in advance according to the shape of the electric wire.

Now, assuming that zero is selected as the predetermined value, since the output pulse numbers of the AND gates 12a and 12b shown in the solid line of FIG. 7 (c) and FIG. 7 (e) are 6 and 12, respectively, The comparison operation circuit 14 determines that 12>6> 0, that is, 12> 6, and outputs a determination signal indicating good peeling.

Next, a case in which coating stripping is defective will be described. In this case, the core portion to be exposed is still covered, and the bare core portion passing signal derived from the photoelectric switch 8a is provided.
S _1, as shown in FIG. 7 (b) the dotted line, and the same time width as the residual cover portion passes the signal S ₂ of FIG. 7 (d). Therefore, as shown by the dotted line in FIG. 7 (c), the number of output pulses (= 12) of the AND gate 12a becomes equal to the number of output pulses (= 12) of the AND gate 12b shown in FIG. 7 (e). The comparison operation circuit 14 determines that 12−12 = 0, that is, 12 = 12, and outputs a determination signal indicating a peeling failure.

As described above, the quality of the coating stripping process is determined by the terminal processing state inspection device.

C. Outline of Transfer Path Adjustment Method Next, a description will be given of a transfer path adjustment method performed prior to the normal operation of the automatic terminal crimping apparatus in order to secure inspection accuracy by the terminal processing state inspection apparatus. FIG. 1 is a flowchart showing one embodiment of a transfer route adjusting method in a terminal processing state inspection device, and FIG. 2 is an explanatory diagram thereof.

First, after setting an electric wire in the automatic terminal crimping device, a transfer path adjustment command is given from an operation unit to a CPU (control means) (not shown). Then, the photoelectric switches 8a and 8b in FIG.
In the electric wire cutting and coating stripping processing unit located on the left side, an electric wire cutting process and a coating stripping process are performed on the electric wire.

When the coating stripping process is completed, the wire terminal 2 is moved and adjusted by a predetermined amount in the arrow P and Q directions by the wire holding / moving means 3 based on the transfer route data before correction stored in the memory. 2 is aligned with a position corresponding to the movement route shown in FIG. 2 (a) or (b), (c) or (d), for example. Thereafter, while the wire terminal 2 is being held by the holding / moving means 3, the tip of the wire terminal 2 is moved along the transfer path 7 'shown in FIGS. 6A, 6B, 6C, and 6D. (Step S1), and after passing through the photoelectric switches 8a and 8b,
(Or (b), (c), and (d) in the same figure), and stops at a predetermined position indicated by a two-dot chain line.

During this time, when the electric wire terminal 2 passes over the photoelectric switches 8a and 8b, the bare core wire section passing signal S _{1 is} transmitted from the photoelectric switches 8a and 8b.
And residual coating portion passing signal S ₂ are output respectively, these bare core wire portion passes signals S ₁ and the residual cover portion passes the signal S ₂ is supplied to the processing circuit 10 (FIG. 6), the counter 13a, 13b
Is displayed on the display (step S
2). In this case, the output count value displayed on the display unit differs as shown below according to the relative positional relationship between the photoelectric switches 8a and 8b and the transfer path 7 '(hereinafter referred to as "relative positional relationship"). Since the value is indicated, the operator can determine the relative positional relationship based on the output count value.

2 (a) to 2 (d) are explanatory diagrams showing typical relative positional relationships.

First Case In the case where the relative positional relationship is as shown in FIG. 2A, the transfer of the wire terminal 2 causes the residual covering portion 5 to pass not only on the photoelectric switch 8b but also on the photoelectric switch 8a. Therefore, the signal S ₁ output from the photoelectric switch 8a, as shown in FIG. 7 (b) the dotted line, the signal S ₂ (FIG. 7 (d)) output from the photoelectric switch 8b same time width as the It will be. Therefore, the output count values of the counters 13a and 13b (FIG. 6) displayed on the display unit of the processing circuit 10 (FIG. 6) are both "12".

Second Case In the case where the relative positional relationship is as shown in FIG. 2 (b), the bare outer conductor 4 passes over the photoelectric switch 8a due to the transfer of the electric wire terminal 2, and Figure 7 (b) while the signals S ₁ shown in the solid line is output, the residual coating 5 passes over photoelectric switch 8b, Figure 7 from the photoelectric switch 8b (d) signal S ₂ shown by the solid line is output . Therefore, the output count values of the counters 13a and 13b (FIG. 6) are "6 and 12", respectively.

Third Case In the case where the relative positional relationship is as shown in FIG. 2 (c), the bare wire 4 only passes over the photoelectric switch 8b due to the transfer of the wire terminal 2, and the residual covering portion 5 does not pass over the photoelectric switches 8a, 8b at all. Thus, while the photoelectric switch 8a from FIG. 7 (b) signals S ₁ not accompanied pulse waveform shown in dot-dash line is output, FIG. 7 from the photoelectric switch 8b (d) signal S ₂ is output shown in dotted Is a counter
The output count values of 13a and 13b (Fig. 6) are "0,6" respectively.
Becomes

Fourth Case In the case where the relative positional relationship is as shown in FIG. 2 (d), even if the electric wire terminal 2 is transferred, both the bare core wire portion 4 and the residual covering portion 5 are photoelectric switches 8a, 8b. Never pass above. Therefore, the signals S ₁ and S ₂ without the pulse waveforms shown by the one-dot chain line in FIG. 7 (b) and the one-dot chain line in FIG. 7 (d) are output from the photoelectric switches 8a and 8b, respectively.
The output count values of the counters 13a and 13b (FIG. 6) are "0, 0", respectively.

As described above, since the output count values of the counters 13a and 13b (FIG. 6) are closely related to the above-described relative positional relationship, conversely, the relative positional relationship can be determined based on the output count value. Becomes This relationship basically holds even when the diameter of the electric wire terminal 2 is different, and the output count value only slightly changes according to the diameters of the bare core wire portion 4 and the residual covering portion 5. That is, the first case (FIG. 2 (a))
Indicates that the output count values of the counters 13a and 13b are both the same value (an integer value of 1 or more), indicating that the same portion has passed on the photoelectric switches 8a and 8b. It can be determined from the count value that the relative positional relationship is defective.

In the third case (FIG. 2C), the counter 13
The output count value of “a” is “0”, which indicates that the electric wire terminal 2 has not passed over the photoelectric switch 8a. Therefore, the worker or the like determines from the output count value that the relative positional relationship is defective. can do.

In the fourth case (FIG. 2D), the counter 13
The output count values of a and 13b are both "0", indicating that the wire terminal 2 has not passed over the photoelectric switches 8a and 8b. Can be determined to be defective.

On the other hand, in the second case, the output count values of the counters 13a and 13b are one or more integer values different from each other, and the output count value of the counter 13b is larger than the output count value of the counter 13a. It can be seen that the bare core wire portion 4 has passed over the photoelectric switch 8a and the residual covering portion 5 has passed over the photoelectric switch 8b. Therefore, an operator or the like can determine from the output count value that the relative positional relationship is good.

In step S3, if the worker or the like determines from the output counter values of the counters 13a and 13b that the relative positional relationship corresponds to, for example, the first, third, or fourth case and is defective, the worker or the like moves in the P direction. Further, an appropriate correction amount α in the Q direction (FIG. 2 (e)) is determined and given to the CPU via the operation panel (step S5). As a result, the transfer route data stored in the memory up to that point moves the transfer route 7 'in the P direction or Q direction.
The data is updated to new transfer route data that translates in the direction by the correction amount α. Here, a transfer path correcting means for correcting transfer path data by the operation panel and the CPU is configured. For example, in the first case where the output count values of the counters 13a and 13b are both 12 (FIG. 2 (a)), the worker or the like moves the transfer path 7 'as shown in FIG. 2 (e). A correction amount α for performing an appropriate parallel movement in the P direction is determined and given to the CPU via the operation panel. If it is determined from the output count value that it corresponds to the third or fourth case (FIG. 2 (c) or (d)), the worker or the like moves the transfer path 7 'in the Q direction by an appropriate amount. The correction amount α for performing the parallel movement is determined and given to the CPU.

In this state, a worker or the like issues a re-operation command via the operation plate.
When given to the CPU, the wire terminal 2 is moved by the correction amount α in the P direction (or the Q direction) by the holding / moving means 3 based on the new transfer path data, and then returned by the predetermined amount in the arrow S direction. . Here, the operation plate and the CPU constitute control means for moving the wire terminal 2 across the positions of the photoelectric switches 8a and 8b by the holding / moving means when the transfer path data is corrected. For example, when the correction amount α corresponding to the first case is input to the CPU, as shown in FIG.
The wire terminal 2 is transferred in the P direction by the correction amount α (from the position indicated by the dotted line in FIG. 3E to the position indicated by the solid line in FIG. 3E), and then the wire terminal 2 is moved along the transfer path 7 ″. (Step S1 '), and is stopped at a predetermined position indicated by a two-dot chain line in FIG.

During this time, when the electric wire terminal 2 passes over the photoelectric switches 8a and 8b, the bare core wire section passing signal S _{1 is} transmitted from the photoelectric switches 8a and 8b.
And output residual coating portions pass signal S _2, respectively, in the same manner as described above, (step S2), and the worker or the like, because the relative positional relationship is displayed on the display unit as the output count value from the output count value Then, the quality of the relative positional relationship is determined (step S3). Then, when it is determined that the relative positional relationship is bad, the worker or the like again gives an appropriate correction amount α to the CPU via the operation plate and updates the transfer route data stored in the memory again (step S5). Then, returning to step S1, the above-described series of processing is performed. The above operation is repeated until a good relative positional relationship is obtained.

In this manner, when it is confirmed in step S3 that the output count value to be determined indicates, for example, "6, 12" and the favorable relative positional relationship shown in FIG. Is given to the CPU via the operation panel to complete the adjustment work.
In this manner, the latest transfer route data is stored in the memory, and when the wire terminal 2 is transferred from the wire cutting / sheathing processing unit to the terminal crimping unit during the next normal operation, The wire terminal 2 is transferred along the transfer route corresponding to the transfer route data. For example,
As shown in FIG. 2 (e), the wire terminal 2 is connected to the transfer path 7 ″.
If the relative positional relationship is determined to be good as described above after the transfer in the S direction along the path, the transfer path data corresponding to the transfer path 7 ″ is determined as the optimum transfer path data, and the normal operation is performed. At times, the wire terminal 2 is transferred based on the optimum transfer route data.

As described above, the optimal transfer route data is obtained while reciprocating the wire terminal 2 in the R direction and the S direction, and the wire terminal 2 is transferred based on the transfer route data during normal operation. The adjustment of the transfer route of the wire terminal 2 with respect to the sensor of the terminal processing state inspection device can be performed by one wire terminal 2, and wasteful consumption of wires and terminals can be prevented.

In the above embodiment, while the wire terminal 2 is repeatedly reciprocated in the R direction and the S direction, the quality of the transfer route is determined based on the output counter value at the time of the forward trip and the return trip, and the transfer route data is corrected. However, while the wire terminal 2 is repeatedly reciprocated in the R direction and the S direction, the pass / fail of the transfer route is determined based on the output counter value only during the forward trip or only during the return trip, and the transfer route data is corrected. Is also good.

Next, an automatic terminal crimping apparatus to which the terminal processing state inspection device is assembled will be described.

D. Configuration of Specific Embodiment FIG. 8 is a perspective view showing an automatic terminal crimping apparatus to which an embodiment of the terminal processing state inspection apparatus according to the present invention is applied, and FIG.
The figure is a side view, and FIG. 10 is a plan view.

As shown in these figures, this device is an automatic terminal crimping device that automatically crimps terminals to both ends of a covered electric wire to manufacture a harness, and includes a wire feeding means 50 and a wire cutting / cutting means 100. And first and second holding / moving means 200, 300
First and second terminal crimping means 400 and 500, discharging means 550, and first and second terminal processing state inspecting means 700 and 8
00 (FIG. 10).

The schematic configuration of the automatic terminal crimping apparatus will be described below together with the schematic operation during normal operation. That is, the two covered electric wires 600a and 600b are fed by the wire feeding means 50 in the direction indicated by the arrow P along the wire feeding line X by a predetermined amount, and the first holding and moving means 200 feeds the covered wire 600a and 600b.
a, 600b, the upstream side with respect to the electric wire feeding direction P in the vicinity of the scheduled cutting area, and the second holding / moving means 30
Holding the downstream side by 0, cut the coated electric wires 600a, 600b by the electric wire cutting / cutting means 100 to execute a cutting process,
Divide into residual wires and cut wires. For convenience of the following description, when performing a cutting process on the insulated wire 600a,
The coated electric wire located upstream of the electric wire cutting / cutting means 100 is referred to as “residual electric wire a”, and the coated electric wire located downstream is referred to as “cut electric wire a”. In addition, coated wire 600b
When the wire is cut, the coated wire located upstream of the wire cutting / cutting means 100 is referred to as “residual wire b”, while the coated wire located downstream is referred to as “cut wire b”. .

Next, the first holding / moving means 200 and the electric wire cutting / cutting means 100 peel off the downstream side of the covering portion of the residual electric wires a and b. b is moved in the direction of the arrow R intersecting with the wire feeding direction P, and the first terminal processing state inspection means 700 determines the quality of the coating stripping process. The terminal is crimped to the portion by the first terminal crimping means 400, and the residual electric wires a and b are again moved in the direction of the arrow S by the first holding / moving means 200 to return to the cutting position. On the other hand, the second holding / moving means 30
0 and the electric wire cutting / cutting means 100, the upstream side of the covering portion of the cut electric wires a and b is peeled off, and further the second holding / moving means 300
Then, the cut wires a and b are moved in the direction of the arrow S, and the quality of the coating stripping process is determined by the second terminal processing state inspection means 800. The terminal is crimped by the second terminal crimping means 500. Then cut wires
a and b are discharged by the discharging means 550, and the second holding / moving means 300 is moved in the direction of arrow R to return to the original position. This operation is continuously repeated, and a harness having terminals attached to both ends is sequentially manufactured. And the first and second
When at least one of the terminal processing state inspection means 700 and 800 detects a defect in the coating stripping processing, the apparatus is configured to be emergency stopped. In this apparatus, two coated electric wires 600a and 600b are configured to be fed at the same time. However, the same configuration is basically adopted when one coated electric wire is fed. .

 Hereinafter, each means will be described in detail.

D-1. First Holding / Moving Means 200 FIG. 11 is a perspective view showing the first holding / moving means 200. As shown in FIGS. 8 to 11, the first holding / moving means 200 includes a first holding means 201 capable of holding the covered electric wires 600a and 600b, and the first holding means 201 is provided in a three-dimensional direction. Moving means 202 movably supporting the insulated wires 600a,
Cylinder 203 which constitutes a driving means for holding 600b
a, 203b, and motors 205, 206 (FIG. 9) constituting driving means for moving the first holding means 201.

The first moving means 202 includes a base 207, a horizontal moving mechanism 208 mounted on the base 207 (FIG. 9), an advance / retreat moving mechanism 209 mounted on the horizontal moving mechanism 208 (FIG. 9), The lifting / lowering mechanism 210 is provided on the forward / backward moving mechanism 209 and has the first holding means 201 attached thereto. That is, the rail 211 is disposed on the base 207 along the left and right directions indicated by arrows R and S, and the horizontal moving mechanism 208 is slidably mounted on the rail 211 along the rail longitudinal direction. Further, a rail 213 (FIG. 9) is attached to the forward / backward moving mechanism 209 along the front-rear direction indicated by arrows P and Q, and the rail 213 is slidably supported by a rail receiver 214 of the horizontal moving mechanism 208. Then, the forward / backward moving mechanism 209 is attached to the horizontal moving mechanism 208 so as to be able to move forward / backward in the front-rear direction. Furthermore, the arrow T, U
The rail 215 is attached along the up and down direction shown in FIG.
6 (FIG. 9), slidably supported by the elevating mechanism 210
Is attached to the forward / backward moving mechanism 209 so as to be able to move up and down along the vertical direction. The first holding means 201 is configured to be movable in three-dimensional directions by moving the horizontal moving mechanism 208, the forward / backward moving mechanism 209, and the elevating / lowering moving mechanism 210 to appropriate amounts.

A pulley 217 is mounted on the rotation shaft of the motor 205, and a pulley 219 is rotatably mounted on the base 207. A belt 218 is stretched between the pulleys 217 and 219. Further, the belt 218 is connected to the horizontal moving mechanism 208 via a connecting piece 220, and the motor 205 is rotationally driven so that the belt 2
The horizontal movement mechanism 208 is configured to move in the left-right direction by rotating the 18.

A pair of rails 221 and 221 are disposed along the front-rear direction at both left and right ends of the drive mechanism 212 having the motor 206, and the pair of rails 221 and 221 have rail supports 222 and 222, respectively.
The moving unit 223 is attached via (FIG. 9) so as to be slidable along the longitudinal direction of the rail. Advancing and retreating unit
A guide groove 224 is formed on the 223 along the left-right direction, and a base end of the advance / retreat moving mechanism 209 is rotatably mounted on a slide shaft 225 slidably fitted in the guide groove 224. On the other hand, the rotating plate 227 is driven by the driving mechanism 21 corresponding to the pulley 226 (FIG. 9) attached to the rotating shaft of the motor 206.
2 and a belt 228 (FIG. 9) is stretched between the rotating plate 227 and the pulley 226. Further, one end of a link mechanism 229, 229 is attached to each of the left and right ends of the rotating shaft 227a of the rotating plate 227, and the other end of the link mechanism 229, 229 is connected to the advance / retreat moving unit 223, and the motor 206 is driven to rotate to rotate the rotating shaft. When the 227a rotates counterclockwise in FIG. 9, the forward / backward moving part 223 is pushed forward (in the direction of the arrow Q) via the link mechanisms 229, 229,
Accordingly, the reciprocating mechanism 209 is configured to move forward. When the rotating shaft 227a is rotated in the reverse direction, the reciprocating mechanism 209 is configured to be pulled back backward.

A spring receiving piece 230 protrudes from the front end of the advance / retreat moving mechanism 209, and a push-up spring 231 is attached between the spring receiving piece 230 and the elevating moving mechanism 210, so that the elevating moving mechanism 210 is pushed upward. It is being rushed.

First holding means 201 attached to elevating movement mechanism 210
As shown in FIG. 10, holding cylinders 240a and 240b through which covered electric wires 600a and 600b can be inserted are provided. Notches are formed in the body of the holding cylinders 240a and 240b, and the holding claws 242a and 242 are respectively formed so as to correspond to the notches.
42b is attached to the pistons of the cylinders 203a and 203b.
Then, the cylinders 203a and 203b are driven to hold the claws 242a and 242b.
When the cover is closed, the coated electric wires 600a and 600b inserted into the holding cylinders 240a and 240b are inserted into the holding claws 242a and 242b and the holding cylinders 240a and 240b.
And the inner peripheral surface of the
When the a and 242b are opened, the holding of the covered electric wires 600a and 600b is released.

The first holding means 201 has a guide member 2 so that the covered electric wires 600a, 600b are guided into the holding cylinders 240a, 240b.
50 is mounted. The guide member 250 is a guide cylinder 251a,
251b and supporting members 253 respectively on the guide cylinders 251a and 251b.
a, 253b, and guide cylinders 252a, 252b. The exposed region of the covered electric wire 600a between the guide cylinders 251a, 252a and the guide cylinders 251b, 2
In the exposed area of the insulated wire 600b between 52b,
a, 600b are configured to be clamped from above and below by the electric wire feeding means 50.

D-2. Second Holding / Moving Means 300 FIG. 12 is a perspective view showing the second holding / moving means 300. As shown in FIGS. 8, 9, 10, and 12, the second holding / moving means 300 is, like the first holding / moving means 200, a second holding means 301 and a second holding / moving means 300. Means of transportation 30
It consists of two. The second moving means 302 is different from the first moving means 202 in that a lifting mechanism 308 of the second moving means 302 is configured to be moved up and down by cylinders 360a and 360b. . That is, cylinders 360a, 360
b is attached to the forward / backward moving mechanism 309 and the cylinder
The respective piston portions of 360a and 360b are connected to the elevating mechanism 310, and the cylinders 360a and 360b are driven to move the elevating mechanism 310 up and down.

Further, the second holding means 301 is formed with holding projections 370a, 370b so as to correspond to the covered electric wires 600a, 600b,
The holding protrusion 370a and the holding claws 342a form a holding groove 371a that is opened upward, and the holding protrusion 370b.
The holding claw 342b forms a holding groove 371b which is also opened upward. Then, with the covered wires 600a, 600b housed in the holding grooves 371a, 371b, the cylinders 303a, 30
When 3b is driven to close the claws 342a and 342b, the coated electric wires 600a and
When the holding claws 342a and 342b are opened, the holding of the covered electric wires 600a and 600b is released. Further, with the holding claws 342a and 342b opened, the second
By raising the holding means 301 by the cylinders 360a and 360b, the covered electric wires 600a and 600b can be accommodated in the holding grooves 371a and 371b from the upper openings thereof. The other configuration is the same as that of the first holding / moving means 200, and therefore, the same portions are denoted by the same reference numerals and description thereof will be omitted.

D-3. First Terminal Processing State Inspection Means 700 As shown in FIG. 10, the first terminal processing state inspection means 700 includes an electric wire cutting / cutting means 100 which is an electric wire cutting / shedding stripping processing unit. First terminal crimping means 400 which is a terminal crimping processing section
And is located between. The detailed configuration is the third
Since it is the same as the figure, the description is omitted here.

D-4. Second Terminal Processing State Inspection Means 800 As shown in FIG. 10, the second terminal processing state inspection means 800 includes an electric wire cutting / cutting means 100 which is an electric wire cutting / coating stripping processing unit. Second terminal crimping means 500 which is a terminal crimping processing section
And is located between. This detailed configuration is described in the third section.
Since it is the same as the figure, the description is omitted here.

C-5. Other Means The automatic terminal crimping apparatus shown in FIGS. 8 to 10 is different from the first and second holding and moving means 200 and 300 and the first and second terminal processing state inspecting means 700 and 800. It has an electric wire feeding means 50, an electric wire cutting / cutting means 100, first and second terminal crimping means 400 and 500, and a discharging means 550. However, since these means are not directly related to the present invention, Here, detailed description of the configuration is omitted.

E. Adjustment of Transfer Path in Specific Embodiment Next, a method of adjusting the transfer path performed prior to the normal operation in the above-mentioned automatic terminal crimping apparatus will be described.

FIG. 13 is a flowchart showing a method of adjusting the transfer path on the first terminal processing state inspection means 700 side in the automatic terminal crimping apparatus.

First, the insulated wires 600a and 600b are set in the automatic terminal crimping device, and then a transfer path adjustment command is given from an operation unit to a CPU (control unit) (not shown). Then, the electric wire feeding means 5
0, the covered wires 600a and 600b are connected to the wire feed line X (eighth
Along the arrow P in FIG. Subsequently, the holding means 20 of the first and second holding / moving means 200, 300
The covered electric wires 600a and 600b are held by 1,301 (FIG. 8). Then, the coated electric wires 600a, 600b by the electric wire feeding means 50
Is released, the cutters 105, 105 are fully closed, and the coated electric wire 600a is cut (cutting processing). Then, the residual wires a, a little advance due to the advance of the holding means 201 (in the direction of the arrow P), the cutters 105, 105 move to the cutting positions and are cut into the covering portions of the residual wires a, b. In the cut state, the holding means 201 is advanced and retracted, and the coating on the downstream end of the residual electric wire a is peeled off (first peeling processing: step S1).
0).

When the covering stripping process for the residual wires a and b is completed, the terminal of the residual wire held by the holding unit 201 is moved by the moving unit 202 based on the transfer route data before correction stored in the memory (not shown). After being moved and adjusted by a predetermined amount in the directions of the arrows P and Q, it is transferred in the direction of the arrow R (step S1), and the residual wire terminal is removed by the first terminal processing state inspection means 70.
It stops at the position where it has passed 0. Then, when each residual wire terminal passes through the first terminal processing state inspection means 700,
According to the method described above, the line width of each residual electric wire terminal is detected by the photoelectric switch (corresponding to the photoelectric switches 8a and 8b in FIG. 2) of the first terminal processing state inspection means 700, and the line width of each residual electric wire terminal is detected. Are displayed on the display unit. Therefore, the operator determines from the displayed output count value whether the electric wire transfer path is good or not, in other words, whether the above-described relative positional relationship is good or not (step S3).

If the relative positional relationship is determined to be bad,
The operator determines an appropriate correction amount α in the P direction or the Q direction and gives it to the CPU via the operation panel. Thus, the transfer route data stored in the memory is updated (step S5).

In this state, the operator issues the most operation command to the CP via the operation plate.
U, the data is stored and stored based on the new transfer route data.
By moving means 200, the residual electric wire terminal is moved in the P direction (or Q
After moving by the correction amount α in the direction (direction), it is returned by a predetermined amount in the arrow S direction. (Step S1 '). During this time, when the residual electric wire terminal passes through the first terminal processing state inspection means 700, the line width of each residual electric wire terminal is detected in the same manner as described above, and the corresponding output count value is displayed on the display unit. (Step S2). Then, the operator again determines whether the relative positional relationship is good or not from the displayed output count value (step S3), and when it is determined that the relative positional relationship is bad, again sends an appropriate correction amount α to the CPU via the operation plate. Then, the transfer route data stored in the memory is updated again (step S5), and the process returns to step S1 to repeat the above series of processes until a favorable relative positional relationship is obtained.

In this way, when it is confirmed in the determination in step S3 that a good relative positional relationship has been obtained, the operator gives a completion signal to the CPU via the operation panel, and transfers the completion signal to the first terminal processing state inspection means 700. The route adjustment work ends.

The adjustment of the transfer route for the second terminal processing state inspection means 800 is performed in the same manner as described above.
Thus, while the cut wires a and b are reciprocated with respect to the second terminal processing state inspection means 800, the transfer route data is updated based on the output count value displayed on the display unit, which can be similarly performed. .

In this manner, the latest transfer route data for the first and second terminal processing state inspection means 700 and 800 is stored in the memory, and during the next normal operation, the electric wire is stored by the first and second holding / moving means. When the terminal is transferred, the wire terminal is transferred along a transfer path corresponding to the transfer path data.

(Effect of the Invention) As described above, according to the electric wire terminal processing state inspection apparatus of the present invention, the holding / moving means is configured to be movable two-dimensionally and reciprocally movable in a direction crossing the sensor position. At the same time, the wire terminal can be freely transferred along the transfer route corresponding to the transfer route data stored in the memory,
A transfer path correcting means for correcting the transfer path data is provided, and when the electric wire terminal is transferred across the sensor position, the quality of the coating stripping is determined based on a signal output from the sensor, and the determination is made. A stripping quality determination unit having a display unit for displaying information; when the transfer path adjustment unit sequentially corrects the contents of the transfer path data during the transfer path adjustment operation, the hold / move is performed each time the correction is performed; Control means for transferring the wire terminal across the sensor position by means,
By sequentially correcting the contents of the transfer path data, the wire terminal is transferred across the sensor position by the holding / moving means each time the correction is performed, and the transfer path for the sensor is optimized based on the signal output from the sensor each time. Transfer route data can be obtained, so that it is possible to adjust the transfer route of the electric wire with respect to the sensor of the terminal processing state inspection device without wasting wires and terminals, and to perform the adjustment efficiently. it can.

[Brief description of the drawings]

FIG. 1 is a flowchart showing one embodiment of a transfer path adjusting method in the terminal processing state inspection apparatus according to the present invention;
FIG. 2 is an explanatory diagram thereof, FIG. 3 is a schematic explanatory diagram showing a terminal processing state inspection apparatus as one embodiment according to the present invention,
FIG. 4 is an arrangement diagram in the case of using a diffuse reflection type photoelectric switch, FIG. 5 is an arrangement diagram in the case of using a facing switch, and FIG. 6 is a terminal processing state inspection shown in FIG. FIG. 7 is a schematic block diagram showing a processing circuit of the device, FIG. 7 is a waveform diagram showing waveforms of respective parts in FIG. 6, FIG. 8 is a perspective view showing an automatic terminal crimping device to which an embodiment according to the present invention is applied, 9 is a side view, FIG. 10 is a plan view, and FIG.
FIG. 12 is a perspective view showing the holding / moving means of FIG.
FIG. 13 is a perspective view showing the moving means, FIG. 13 is a flowchart showing a procedure for adjusting the transfer path on the first terminal processing state inspection means side of the automatic terminal crimping apparatus shown in FIGS. 8 to 10, and FIG. FIG. 15 and FIG. 15 are schematic explanatory diagrams each showing a conventional electric wire terminal processing state inspection device. 2 ... wire end, 3 .... holding and moving means 7,7 '... transfer path, 8a, 8b ... photoelectric switch, S ₁ ... bare core part pass signal, S ₂ ... residual coating portion passes Signal, 200: First holding / moving means, 300: Second holding / moving means, S1, S1 ', S5 ... Step

Claims (1)

(57) [Claims] 1. A sensor provided on a transfer path while transferring a wire end having a core stripped by coating stripping along a transfer path using a movable holding / moving means. In a wire terminal processing state inspection device for judging pass / fail of a coating stripping processing state, the holding / moving means is configured to be movable in a two-dimensional direction and reciprocally movable in a direction crossing the sensor position, The wire terminal can be freely transferred along a transfer route corresponding to the transfer route data stored in the memory, and a transfer route correcting means for correcting the transfer route data is provided, and the wire terminal is moved across the sensor position. When the is transported, stripping quality determination means having a display unit for determining the quality of the coating stripping based on the signal output from the sensor and displaying the determination information is provided. Control means for transferring the wire terminal across the sensor position by the holding / moving means each time the contents of the transfer path data are sequentially corrected by the transfer path correcting means during the path adjusting operation. An electric wire terminal processing state inspection device, comprising: