JPH06223951A - Quality control device for crimp terminal - Google Patents

Abstract

PURPOSE:To improve the quality of a crimp terminal by excluding the defective crimp terminal. CONSTITUTION:A terminal crimping machine 1 is provided with a trigger sensor 2 and a pressure sensor 3, a charge amplifier unit 4 is connected to the pressure unit 3, a computer 5 provided with a CPU 5a and an internal memory 5b is connected to the charge amplifier unit 4 and the trigger sensor 2, and the computer 5 is connected to a neural network 6 imitating the conversion of the desired wave-form analysis to learn and store it when the crimp terminal example by the wave-form analysis is presented. An external memory device 7 is connected to display the quality of the crimp terminal on the I/O 5e of the computer 5, and a control device 8 is connected to the A/D converter board unit 5f of the computer 5 to control the operation of the terminal crimping machine 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to quality control of a crimp terminal for inspecting the quality of the crimp terminal by comparing the crimp terminal in a terminal crimping machine for crimping a terminal to a strip of electric wire with a reference crimp terminal stored and stored in advance. Regarding the device.

[0002]

2. Description of the Related Art A terminal crimping machine for crimping a terminal to a strip of an electric wire of this type, which has already been proposed, is constructed as shown in FIG.

That is, in FIG. 3, in the lower part of the machine frame a in the terminal crimping machine for crimping the terminal to the strip of electric wire,
An anvil a1 is provided, and a drive shaft b is rotatably mounted on the machine frame a. A crank rod d having an eccentric pin c is connected to the drive shaft b, and an arm rod e and an operating rod f are connected to the end of the crank shaft d by a pin g. Further, the base of the arm rod e is pivotally attached to the upper part of the machine frame a by a pin shaft h,
The other end of the operating rod f is connected to the ram member i by a pin j. Further, the ram member i is provided slidably in the vertical direction along a guide groove k formed in the machine frame a, and an elevating crimper m is provided at the lower end of the ram member i. The strips W1 of the electric wires W are detachably mounted so as to crimp the terminals T. or,
For example, a pressure sensor n such as a load cell is attached to the base of the arm rod e so as to detect the crimping force when crimping the terminal T.

Therefore, in the above-mentioned terminal crimping machine, the drive shaft b
By rotating the crank rod, the crank rod d having the eccentric pin c connected to the drive shaft b is cranked. Therefore, the ram member i is pivoted through the operating rod f pivotally attached to the crank rod d. The terminal T is crimped to the strip W1 of the electric wire W on the anvil a1 by the ascending / descending crimper.

On the other hand, the pressure sensor n detects the crimping force at the time of crimping the terminal T, and this is indicated by the curve A of the crimping force in the graph of FIG.

Therefore, the crimping terminal of the terminal crimping machine described above detects the crimping force when crimping the terminal T with the pressure sensor n, and as shown in FIGS.
The barrel T1 of the terminal T is crimped onto a strip W1 of a predetermined length of the electric wire W, and a predetermined crimp wide T2.
, And crimped to form crimp height T3.

[0007]

However, the above-described terminal crimping machine detects the crimping force when crimping the crimping terminal to the terminal T with the pressure sensor n, and strips the electric wire W in a predetermined length. Since the barrel T1 of the terminal T is crimped to W1 and the crimp wide T2 and crimp height T3 are formed so as to form a predetermined crimp width T2, as shown in FIG.
(B) (C) (D) (E) (F) (G) (H) (I)
As shown in (J), not only is it difficult to detect a defective crimp terminal, but if the operation of the terminal crimping machine is continued as it is, a large amount of defective products will be manufactured.

That is, as shown in FIG. 5C, a defective crimp terminal causes deformation of the barrel transition T4, and as shown in FIG. 5D, the length of the strip W1 is insufficient. Alternatively, as shown in FIG. 5 (E), the terminal itself tilts upward by the α angle or the downward angle β.
Further, as shown in FIG. 5 (F), the terminal itself is tilted to the left by a γ angle or rightward at a δ angle, and
As shown in FIG. 5, the lance T5 of the terminal T is crushed or deformed greatly, and as shown in FIG. 5 (H), the barrel T1 is crimped with the coating to cause a conduction failure. Furthermore, even if the core wire of the strip W1 is protruded as shown in FIG. 5 (I) or the barrel T1 of the terminal T is deformed as shown in FIG. 5 (J), these Not only is it difficult to detect defective crimp terminals, but continuous operation of the terminal crimping machine results in the production of a large number of defective products.

As described above, the above-described terminal crimping machine only detects the crimping force when crimping the crimping terminal to the terminal T with the pressure sensor n, as shown in FIGS. 5 (B) (C) (D) (E).
The generation of defective products as shown in (F), (G), (H), (I), and (J) is performed visually, and reliability and safety are set in the allowable range that is the standard for quality judgment. There's a problem.

In order to solve the above problems, the present invention improves the quality of crimp terminals by eliminating terminals with crimping defects, and presents an example of crimping terminal analysis by waveform analysis, which is desirable for conversion of waveform analysis. While learning and memorizing by imitating,
It is an object of the present invention to provide a crimp terminal quality control device which is designed to improve reliability and safety in setting an allowable range which is a standard for quality judgment.

[0011]

According to the present invention, a terminal crimping machine is provided with a trigger sensor and a pressure sensor, a charge amplifier unit is connected to the pressure sensor, and the charge amplifier unit and the trigger sensor have a CPU.
And a computer having an internal memory is connected to the computer, and a neural network for learning and memorizing the desired waveform analysis conversion is connected to the computer by presenting an example of the crimp terminal by the waveform analysis, and the crimp terminal is connected to the I / O of the computer. An external recording device is connected so as to display the quality of the above, and a control device is connected to the A / D converter board unit of the computer so as to control the operation of the terminal crimping machine.

[0012]

According to the present invention, when crimping the terminal to the strip of the electric wire on the anvil in the terminal crimping machine, the trigger signal of the trigger sensor is input to the computer while the timing of crimping is started by the trigger sensor. The pressure sensor detects the crimping force, the pressure signal of the pressure sensor is input to the charge amplifier unit to amplify the output voltage, which is then input to the computer, and then the CPU of the computer uses the internal memory. The crimp terminal examples by waveform analysis are compared and calculated, and the control device controls the operation of the terminal crimping machine via the TTL signal of the A / D converter board unit so that the crimp terminal is out of the permissible range which is a standard for quality judgment. Then, the operation of the terminal crimping machine connected to the control device is stopped in an emergency, while the operation of the computer is stopped. If an example of a crimp terminal by waveform analysis is presented from the communication section of the computer to the neural network, the conversion of the desired waveform analysis is learned and stored, and a display signal is sent from the I / O of the computer to an external recording device, and the external recording device is transmitted. Indicates whether the crimp terminal is good or bad.

[0013]

The present invention will now be described with reference to the illustrated embodiments.

In FIG. 1, reference numeral 1 is a terminal crimping machine for crimping a terminal to a strip of electric wire. In the terminal crimping machine 1, for example, a trigger sensor 2 by a photo sensor and a pressure by a load cell are used. A sensor 3 is additionally provided, and the trigger sensor 2 measures the timing of the start of crimping while the trigger sensor 2
The trigger signal 2a is input to the computer 5 described later. A charge amplifier unit 4 that amplifies the output voltage is connected to the pressure sensor 3, and a computer 5 is connected to the charge amplifier unit 4 and the trigger sensor 2. Further, in the computer 5, a CPU (central processing unit) 5a and a standard crimp terminal (standard crimp terminal case) for crimping various terminals having different shapes and sizes to strips of various electric wires are stored and stored. The internal memory 5b, the interface 5c, the communication unit 5d, and the I / O 5e are incorporated therein. Furthermore, a neural network 6 is connected to the communication unit 5d, and this neural network (recognition storage unit) 6 imitates the conversion of the desired waveform analysis when the computer 5 presents an example of a crimp terminal by waveform analysis. I try to learn and remember. An external recording device (display device) 7 is connected to the I / O 5e of the computer 5, and the external recording device 7 displays recording and reproduction of the quality of the crimp terminal. Further, in the A / D converter board unit 5f of the computer 5, the control device 8 has the terminal crimping machine 1
Connected to control the operation of.

That is, the control device 8 is shown in FIG.
(C) (D) (E) (F) (G) (H) (I) (J) When a defective crimp terminal is detected and displayed, the operation of the terminal crimping machine 1 is immediately stopped. I am trying to do it.

The operation of the present invention will be described below.

Therefore, the anvil 1 in the terminal crimping machine 1
When crimping the terminal T to the strip W1 of the electric wire W on a, the trigger sensor 2 starts sampling the output waveform signal that determines the display content of the time-minute waveform. That is, the trigger signal 2a of the trigger sensor 2 is input to the computer 5 and the pressure sensor 3 detects the pressure bonding force while the timing of starting the pressure bonding, and the pressure signal of the pressure sensor 3 is transmitted to the charge amplifier unit 4. Input to and amplify the output voltage.

That is, the waveform signal output from the pressure sensor 3 in the crimping process is converted into a voltage in the charge amplifier unit 4.
Here, the charge amplifier unit 4 has a function of managing the crimping process, and is set so that the normal peak output value of the crimping process is about 70% of the predetermined maximum crimping force.

Further, as shown by the curve B in FIG.
The pressure signal of the pressure sensor 3 whose voltage is converted in the charge amplifier unit 4 is input to the computer 5,
Thereafter, the CPU 5a of the computer 5 performs a comparison calculation with the reference crimp terminal example by the waveform analysis by the internal memory 5b, and inputs this to the control device 8 via the TTL signal 8a of the A / D converter board unit 5f. The operation of the terminal crimping machine 1 is controlled.

That is, the control device 8 is shown in FIG.
(C) (D) (E) (F) (G) (H) (I) (J) When a defective crimp terminal is detected and displayed, the operation of the terminal crimping machine 1 is immediately stopped. I am trying to do it. That is, when it is outside the permissible range which is the standard for quality judgment, the control device 8 causes the operation of the terminal crimping machine 1 to be stopped urgently. Further, the control device 8 finely adjusts the bottom dead center of the ascending / descending crimper in the crank mechanism, finely adjusts the centering of the electric wire, and finely adjusts the intermittent feed of the chain terminals.

On the other hand, the computer 5 has its communication section 5
Input to the neural network 6 through d. Then, the neural network 6 presents an example of a crimp terminal by waveform analysis and imitates and stores the desired waveform analysis conversion. Furthermore, the computer 5 displays recording and reproducing of the quality of the crimp terminal from the I / O 5b to the external recording device (display device) 7.

Next, in another embodiment of the present invention shown in FIG. 2, a tachometer 9 such as a rotary encoder is attached to the terminal crimping machine 1, and the tachometer 9 is connected to the computer 5. By connecting to the trigger sensor 2 and the pressure sensor 3, more accurate measurement accuracy can be achieved.

[0023]

As described above, according to the present invention, the terminal crimping machine is provided with the trigger sensor and the pressure sensor, the charge amplifier unit is connected to the pressure sensor, and the charge amplifier unit and the trigger sensor are connected to the CP.
If a computer equipped with U and an internal memory is connected and an example of a crimp terminal by waveform analysis is presented to this computer, a neural network for learning and memorizing the conversion of the desired waveform analysis is connected, and the I / O of the computer is connected.
Since an external recording device is connected to the device to display the quality of the crimp terminal and a controller is connected to the A / D converter board unit of the computer to control the operation of the terminal crimping machine, Not only can the terminals be eliminated to improve the quality of crimp terminals, but it is also desirable to present an example of crimp terminals by waveform analysis, which is a desirable criterion for quality judgment while learning and memorizing by simulating the conversion of the desired waveform analysis. It has an excellent effect that the reliability and safety can be improved by setting the allowable range.

[Brief description of drawings]

FIG. 1 is a block diagram of a crimp terminal quality control device of the present invention.

FIG. 2 is a block diagram of another embodiment of the quality control device for crimp terminals according to the present invention.

FIG. 3 is a side view of an already proposed crimping machine.

FIG. 4 is a graph for explaining the operation of the already proposed crimping machine.

FIG. 5 is a view showing an example of a crimp terminal crimped to a strip of electric wire.

[Explanation of symbols]

 1 terminal crimping machine 2 trigger sensor 3 pressure sensor 4 charge amplifier unit 5 computer 6 neural network 7 external recording device 8 control device

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[Procedure amendment]

[Submission date] March 4, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction content]

[Document name] Statement

Patent application title: Quality control device for crimp terminals

[Claims]

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crimp for inspecting the quality of a crimp terminal by comparing a terminal crimp force waveform in a terminal crimping machine for crimping a terminal to a strip of electric wire with a reference terminal crimp force waveform stored and stored in advance. The present invention relates to a terminal quality control device.

[0002]

2. Description of the Related Art A terminal crimping machine for crimping a terminal to a strip of an electric wire of this type, which has already been proposed, is constructed as shown in FIG.

That is, in FIG. 3, in the lower part of the machine frame a in the terminal crimping machine for crimping the terminal to the strip of electric wire,
An anvil a1 is provided, and a drive shaft b is rotatably mounted on the machine frame a. A crank rod d having an eccentric pin c is connected to the drive shaft b, and an arm rod e and an operating rod f are connected to the end of the crank shaft d by a pin g. Further, the base of the arm rod e is pivotally attached to the upper part of the machine frame a by a pin shaft h,
The other end of the operating rod f is connected to the ram member i by a pin j. Further, the ram member i is provided so as to be slidable in the vertical direction along the guide groove k formed in the machine frame a, and an elevating crimper m is provided at the lower end of the ram member i. The strips W1 of the above-mentioned electric wires W are detachably provided so as to crimp the terminals T. or,
For example, a pressure sensor n such as a load cell is attached to the base of the arm rod e so as to detect the crimping force when crimping the terminal T.

Therefore, in the above-mentioned terminal crimping machine, the drive shaft b
By rotating the crank rod, the crank rod d having the eccentric pin c connected to the drive shaft b is cranked. Therefore, the ram member i is pivoted through the operating rod f pivotally attached to the crank rod d. The terminal T is crimped to the strip W1 of the electric wire W on the anvil a1 by the elevating crimper m integrated with.

On the other hand, the pressure sensor n detects the crimping force at the time of crimping the terminal T, and this is indicated by the curve A of the crimping force in the graph of FIG.

Therefore, the crimping terminal of the terminal crimping machine described above detects the crimping force when crimping the terminal T with the pressure sensor n, and as shown in FIGS.
The barrel T1 of the terminal T is crimped to the strip W1 of the predetermined length of the electric wire W, and the predetermined crimp wide T
2, crimped to form crimp height T3.

[0007]

However, the above-described terminal crimping machine detects the crimping force when crimping the crimping terminal to the terminal T with the pressure sensor n, and strips the electric wire W in a predetermined length. Since the barrel T1 of the terminal T is crimped to W1 so as to form the predetermined crimp wide T2 and crimp height T3, FIG.
(B) (C) (D) (E) (F) (G) (H) (I)
As shown in (J), not only is it difficult to detect a defective crimp terminal, but if the operation of the terminal crimping machine is continued as it is, a large amount of defective products will be manufactured.

That is, as shown in FIG. 5 (C), a defective crimp terminal causes deformation of the barrel transition T4, and as shown in FIG. 5 (D), the length of the strip W1 is insufficient. Or, as shown in FIG. 5 (E), the terminal itself tilts upward by an α angle or a downward angle β.
Further, as shown in FIG. 5 (F), the terminal itself may be tilted to the left by a γ angle or to the right by a δ angle, or
As shown in FIG. 5, the lance T5 of the terminal T is crushed or greatly deformed. As shown in FIG. 5 (H), the barrel T1 is pressure-bonded with the coating to cause poor conduction. Furthermore, even if the core wire of the strip W1 is protruded as shown in FIG. 5 (I) or the barrel T1 of the terminal T is deformed as shown in FIG. Not only is it difficult to detect defective crimp terminals, but continuous operation of the terminal crimping machine results in the production of a large number of defective products.

As described above, the above-described terminal crimping machine only detects the crimping force when crimping the crimping terminal to the terminal T with the pressure sensor n, as shown in FIGS. 5 (B) (C) (D) (E).
The generation of defective products as shown in (F), (G), (H), (I), and (J) is performed visually, and it is necessary to set the allowable range that is the standard for quality judgment to improve reliability and stability. There's a problem.

In order to solve the above problems, the present invention improves the quality of crimp terminals by eliminating terminals with crimping defects, and presents an example of crimping terminal analysis by waveform analysis, which is desirable for conversion of waveform analysis. While learning and memorizing by imitating,
An object of the present invention is to provide a crimp terminal quality interest rate device which is designed to improve reliability and safety in setting an allowable range which is a standard for quality judgment.

[0011]

According to the present invention, a terminal crimping machine is provided with a trigger sensor and a pressure sensor, an amplifier is connected to the pressure sensor, a computer is connected to the amplifier and the trigger sensor, and the computer is connected to the computer. When a terminal crimping force waveform is presented by waveform analysis, a neural network is connected which learns and memorizes by simulating the desired waveform analysis conversion, and an external recording device is connected to the I / O of the computer so as to display the quality of the crimping terminal. A control device is connected to the A / D converter board unit of the computer so as to control the operation of the terminal crimping machine.

[0012]

According to the present invention, when crimping the terminal to the strip of the electric wire on the anvil in the terminal crimping machine, the trigger signal of the trigger sensor is input to the computer while the timing of crimping is started by the trigger sensor. The pressure sensor detects the crimping force, the pressure signal of the pressure sensor is input to the width amplifier of the charge amplifier unit to amplify the output voltage, which is then input to the computer, and then the CPU of the computer. The terminal crimping force waveform is compared and calculated by the waveform analysis by the internal memory, and the operation of the terminal crimping machine is controlled by the control device via the TTL signal of the A / D converter board unit, which serves as a criterion for quality judgment. If it is out of the allowable range, the terminal crimping machine connected to the above-mentioned control device will be stopped and Presenting a terminal crimping force waveform by waveform analysis from the communication section of the computer to the neural network to imitate and memorize the desired waveform analysis conversion, and send a display signal from the I / O of the computer to an external recording device. This external recording device displays the quality of the crimp terminal.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to an illustrated embodiment.

In FIG. 1, reference numeral 1 is a terminal crimping machine for crimping a terminal to a strip of electric wire. In the terminal crimping machine 1, for example, a trigger sensor 2 by a photo sensor and a pressure by a load cell are used. A sensor 3 is additionally provided, and the trigger sensor 2 measures the timing of the start of crimping while the trigger sensor 2
The trigger signal 2a is input to the computer 5 described later. In addition, the pressure sensor 3 includes an amplifier 4 including a charge amplifier unit that amplifies the output voltage.
The computer 5 is connected to the amplifier 4 and the trigger sensor 2. Further, in the computer 5, a CPU (central processing unit) 5a and a standard crimp terminal (standard crimp terminal case) for crimping various terminals having different shapes and sizes to strips of various electric wires are stored and stored. The internal memory 5b, the interface 5c, the communication unit 5d, and the I / O 5e are incorporated therein. Furthermore, a neural network 6 is connected to the communication unit 5d, and this neural network (recognition recording unit) 6 mimics the conversion of the desired waveform analysis when the computer 5 presents the terminal crimping force waveform by the waveform analysis. I try to learn and remember. or,
An external recording device (display device) 7 is connected to the I / O 5e of the computer 5, and the external recording device 7
Displays the recording and reproduction of the quality of the crimp terminal. Further, the controller 8 is connected to the A / D converter board unit 5f of the computer 5 so as to control the operation of the terminal crimping machine 1.

That is, the control device 8 is shown in FIG.
(C) (D) (E) (F) (G) (H) (I) (J) When a defective crimp terminal is detected and displayed, the operation of the terminal crimping machine 1 is immediately stopped. I am trying to do it.

The operation of the present invention will be described below.

Therefore, the anvil 1 in the terminal crimping machine 1
When crimping the terminal T to the strip W1 of the electric wire W on a, the trigger sensor 2 starts sampling the output waveform signal that determines the display content of the time-minute waveform. That is, the trigger signal 2a of the trigger sensor 2 is input to the computer 5 and the pressure sensor 3 detects the pressure bonding force while the pressure of the pressure sensor 3 is detected by the charge amplifier unit. The voltage is input to the amplifier 4 and the output voltage is amplified.

That is, the output signal of the pressure sensor 3 in the crimping process is converted into a voltage in the amplifier 4 by the charge amplifier unit. Here, the charge amplifier unit 4 has a function of managing the crimping process, and is set so that a normal output peak value of the crimping process is about 70% of a predetermined amount of the large crimping force. .

Further, as shown by the curve B in FIG.
The pressure signal of the pressure sensor 3 which has been voltage-converted in the amplifier 4 by the charge amplifier unit is input to the computer 5, and thereafter the CPU 5 of the computer 5 is connected.
In a, a comparison is made with the reference terminal crimping force waveform by the waveform analysis by the internal memory 5b, and this is input to the control device 8 via the TTL signal 8a of the A / D converter board unit 5f to input the terminal crimping machine 1 Control driving.

That is, the control device 8 is shown in FIG.
(C) (D) (E) (F) (G) (H) (I) (J) When a defective crimp terminal is detected and displayed, the operation of the terminal crimping machine 1 is immediately stopped. I am trying to do it. That is, when it is outside the permissible range which is the standard for quality judgment, the control device 8 causes the operation of the terminal crimping machine 1 to be stopped urgently. Further, the control device 8 finely adjusts the bottom dead center of the ascending / descending crimper in the crank mechanism, finely adjusts the centering of the electric wire, and finely adjusts the intermittent feed of the chain terminals.

On the other hand, the computer 5 has its communication section 5
Input to the neural network 6 through d. Then, the neural network 6 presents the terminal crimping force waveform by the waveform analysis and imitates and stores the desired waveform analysis conversion. Furthermore, the computer 5
Displays the recording and reproducing of the quality of the crimp terminal from the I / O 5b to the external recording device (display device) 7.

Next, in another embodiment of the present invention shown in FIG. 2, a tachometer 9 such as a rotary encoder is attached to the terminal crimping machine 1, and the tachometer 9 is connected to the computer 5. By connecting to the trigger sensor 2 and the pressure sensor 3, more accurate measurement accuracy can be achieved.

[0023]

As described above, according to the present invention, the terminal crimping machine is provided with the trigger sensor and the pressure sensor, the pressure sensor is connected to the amplifier, and the amplifier and the trigger sensor are provided with the CPU and the internal memory. When a computer is connected and a terminal crimping force waveform by waveform analysis is presented to this computer, a neural network for learning and memorizing by imitating the conversion of the desired waveform analysis is connected, and the quality of the crimping terminal is displayed on the I / O of the computer. External recording device is connected to the A / D of the computer
Since the control device is connected to the converter board unit so as to control the operation of the above terminal crimping machine, not only terminals with defective crimping can be eliminated and the quality of crimping terminals can be improved, but also waveform analysis can be performed. It is possible to improve reliability and safety by setting the allowable range that is the standard for quality judgment while learning and memorizing the desired waveform analysis conversion by presenting the terminal crimping force waveform by Has the excellent effect of

[Brief description of drawings]

FIG. 1 is a block diagram of a crimp terminal quality control device of the present invention.

FIG. 2 is a block diagram of another embodiment of the quality control device for crimp terminals according to the present invention.

FIG. 3 is a side view of an already proposed crimping machine.

FIG. 4 is a graph for explaining the operation of the already proposed crimping machine.

FIG. 5 is a view showing an example of a crimp terminal crimped to a strip of electric wire.

[Explanation of symbols] 1 terminal crimping machine 2 trigger sensor 3 pressure sensor 4 amplifier 5 computer 6 neural network 7 external recording device 8 control device

Claims (1)

[Claims] 1. A terminal crimping machine equipped with a trigger sensor and a pressure sensor, a charge amplifier unit connected to the pressure sensor, a CPU and an internal memory connected to the charge amplifier unit and the trigger sensor. A computer, a neural network which is connected to the computer and which learns and memorizes by imitating the conversion of the desired waveform analysis by presenting an example of the crimp terminal by waveform analysis, and displaying the quality of the crimp terminal on the I / O of the computer An external recording device connected to
A quality control device for crimp terminals, comprising: a control device connected to the A / D converter board unit of the computer to control the operation of the terminal crimping machine.