JPH1064654A - Terminal crimp machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a maintenance-free terminal crimp machine which permits change of the operating speed during one turn of rotation, emergency stop in an emergency, and co-use in two sorts of regions with different AC frequencies, i.e., 50Hz and 60Hz, and which has eliminated necessity for adjusting works. SOLUTION: This crimp machine comprises a drive motor 1, speed reduction gear 2, slide part 3, applicator 4, etc., which are mounted on the main frame 5, wherein the rotation of the motor 1 is converted by the slide part 3 into reciprocative motions, and terminals fed to the applicator 4 are caulked continuously. In this case, the main frame 5 is further fitted with an inverter device 11 to output an AC current with variable voltage and variable frequency, and the start and stop of the motor 1 and its revolving speed are directly controlled in accordance with a control program which has been set previously.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal crimping machine, and more particularly to a terminal crimping machine capable of efficiently crimping a crimp terminal or the like.

[0002]

2. Description of the Related Art Main frames, drive motors, reduction gears,
2. Description of the Related Art A terminal crimping machine configured by a slide portion, an applicator, or the like, and connected by crimping an end of a lead wire to a crimp terminal that is intermittently fed into the applicator, has been widely used with an increase in the use of crimp terminals.

In a conventional terminal crimping machine, a method has been adopted in which the rotational movement of a drive motor is constantly maintained constant, and the rotational movement thereof is interrupted by a clutch, thereby controlling the operation. In this case, as the clutch, either a sliding pin clutch, which is a type of mechanical clutch, or a friction clutch provided with a brake mechanism, is usually used.

[0004]

The sliding pin clutch, which is a type of mechanical clutch, is mechanically inoperable because once the clutch is engaged, the clutch cannot be released unless the clutch rotates once, so that it cannot be stopped during operation. Was. Therefore, even if an emergency occurs, it cannot be stopped suddenly, and there is a safety problem.

On the other hand, in a friction clutch, a brake mechanism must be provided, and a clearance adjustment accompanying friction of a lining, which is the heart of the clutch, must be frequently performed. This causes a problem in maintenance. Further, the operation sound is loud, which causes the working environment to deteriorate. Further, in the conventional motor using these clutches, since the rotation of the motor is reduced by a mechanical mechanism, the operation speed changes when the power supply frequency changes. Needed to change the mechanical reduction ratio. Therefore, in the past, it was impossible to directly use a power supply frequency of 50 Hz in a 60 Hz area.

Further, since the speed is reduced by a mechanical mechanism,
It was not possible to easily change the operating speed, and it was almost impossible to change the operating speed during the rotation operation. SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned conventional problems relating to a terminal crimping machine. By devising control of a driving motor, it is easy to operate, emergency stop is possible, excellent in safety, and operation is excellent. The purpose of the present invention is to provide a terminal crimping machine which has low noise and requires almost no adjustment.

[0007]

According to the present invention, a drive motor 1, a speed reducer 2, a slide unit 3, an applicator 4 and the like are mounted on a main frame 5, and the rotation of the drive motor 1 is reciprocated in the slide unit 3. In a terminal crimping machine for continuously crimping crimp terminals sent to the applicator 4, the inverter device 11 for outputting a variable voltage and a variable frequency alternating current is incorporated in the main frame 5 and set in advance. This problem is solved by directly controlling the start / stop of the drive motor 1 and its rotation speed according to the control program.

[0008]

FIG. 1 is a perspective view of a terminal crimping machine according to an embodiment of the present invention. In FIG.
Is a reducer, 3 is a slide unit, 4 is an applicator,
The drive motor 1 uses an AC induction motor whose rotation number fluctuates easily and has a large torque, and the rotation of the drive motor 1 is decelerated by a speed reducer 2 directly connected to its rotating shaft.

In this embodiment, the drive motor 1 and the speed reducer 2 are in the form of a so-called geared motor integrated. The output shaft of the speed reducer 2 is connected to a slide portion 3 for converting a rotational motion into a reciprocating motion by using a crank mechanism. After the rotational motion of the drive motor 1 is reduced by the speed reducer 2, the slide portion 3 3, the motion is converted into a reciprocating motion, and the push rod 8 is moved up and down. And, these drive motor 1, reduction gear 2,
The slide portion 3 is attached to a metal main frame 5 which is a housing. Reference numeral 4 denotes a mold called an applicator, and a crimper 7 is pressed downward from above onto a terminal fitting (not shown) mounted on an anvil 6 located below to perform crimping. The crimper 7 is given vertical movement by the push rod 8 of the slide portion 3. These mechanisms are basically the same as those of a conventional crimping machine.

Reference numeral 9 denotes a stop timing sensor mounted on the outside of the rear surface of the main frame 5, and 10 denotes an operation panel provided on the outside of the front surface of the main frame 5. The operation panel 10 includes a power supply main switch, an emergency stop. Knobs of various switches such as switches and operation mode selection switches and an operation number counter are provided.

On the other hand, reference numeral 11 denotes an inverter device mounted inside the main frame 5 for outputting a variable voltage and a variable frequency alternating current by the action of a built-in semiconductor circuit. A dedicated program for controlling this is incorporated, and the start, stop, and rotation speed of the drive motor 1 can be freely controlled according to the program. As described above, since a dedicated program is pre-installed in the inverter device 11 of this embodiment, a sequencer for controlling the inverter is not required in this embodiment.

A drive foot switch 12 is provided separately from the main frame.
Reference numeral 1 denotes a rotation command input from the activation foot switch 12, an operation mode input from the operation mode selection switch of the operation panel 10, a stop input from the emergency stop switch and the stop timing sensor 9 of the operation panel 10, and an operation mode selection switch. Is supplied with a speed selection command input.

The assignment of the inverter device 11 to each input and each switch is as follows. Rotation command input (assigned to the start foot switch 12) When the operation mode input is off, the motor rotates only while the rotation command input is on. When the operation mode input is on, the motor rotates until the stop input is off. Operation mode input (assigned to the operation mode selection switch) is not considered to be on unless it is turned on during 2 scans or more. When off Jogging operation (motor rotates only while the rotation command is on) When on One process operation (when rotation command is turned on) Once turned on, the operation continues until the stop input is turned off.) Stop input (assigned to the stop timing sensor and emergency stop switch) If this input is turned off during one process operation, the motor stops. Speed selection (assigned to the operation mode selection switch) On High speed (arbitrary speed setting) Off Low speed (arbitrary speed setting)

In addition, the inverter device 11 corresponding to these
Are set as the following two types. Inverter error (no assignment) Turns on due to inverter error Inverter run (assigned to operation counter) Motor rotation on

Further, the operation order is as follows. (1) Foot switch ON Motor rotation when ON for 2 scans or more (2) Caulking operation Normally near bottom dead center (180 °) of push rod 8 (3) Stop timing sensor OFF Normally around 300 ° Controlled by inverter (4) Motor complete stop Normally near top dead center (0 °) DC braking is applied near complete stop. If the emergency stop switch is turned on while the motor is rotating, the motor will stop suddenly. During that time, other operations cannot be performed.

[0017]

As described above, since the terminal crimping machine according to the present invention has an inverter device specially programmed as described above, the operation speed can be easily changed, and the conventional terminal crimping machine is completely impossible. It is also possible to change the speed during one rotation operation. Therefore, in the case of a workpiece in which the crimping speed cannot be increased, only the processing range (a certain time range during one rotation operation) is set to a low speed, and it is possible to cope with such a processed product without reducing the entire production speed so much. High-speed operation can be selected for another workpiece, and medium-speed operation can be selected for another workpiece with a single switch, so that fine-grained operation can be realized.

Since no clutch or brake structure is required, the mechanical structure is simple, and delicate adjustment and maintenance work are almost unnecessary. Furthermore, since it is very easy to change the operation speed, the power supply frequency is 50 Hz
It can be shared with the 0z area, and has excellent versatility. Further, since the clutch is not used, the operation sound is quiet, does not become a noise source, and is excellent in improving the working environment. Emergency emergency stop, which was impossible with the conventional one, is also possible and excellent in safety.
This is a highly practical terminal crimping machine that has many effects such as that of the present invention and has been significantly advanced compared to conventional terminal crimping machines.

[0019]

[Brief description of the drawings]

FIG. 1 is a perspective view of an embodiment of a terminal crimping machine according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Drive motor 2 Reduction gear 3 Slide part 4 Applicator 5 Main frame 6 Anvil 7 Crimper 8 Push rod 9 Stop timing sensor 10 Operation panel 11 Inverter device 12 Foot switch

Claims (1)

[Claims] A drive motor, a speed reducer, a slide portion, an applicator, and the like are mounted on a main frame, and the rotation of the drive motor is converted into a reciprocating motion at the slide portion. In a terminal crimping machine that continuously performs a crimping operation of a crimped terminal that has been sent, an inverter device 11 that outputs an alternating current of a variable voltage and a variable frequency is incorporated in a main frame 5, and the drive motor 1 is driven according to a preset control program. A terminal crimping machine characterized in that start / stop and its rotation speed are directly controlled.