JPH11154577A - Lubricating oil supply device in terminal crimping machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lubricating oil supply device in a terminal crimping machine which can apply lubricating oil to a crimper without scattering the lubricating oil. SOLUTION: In a terminal crimping machine to which this lubricating oil supply device is applied, every time when a crimping frequency equivalent to a prescribed frequency is counted by a count part 25, an air cylinder 27 is extended from a contracted condition by control of a control part 33, and an arm 17 is moved up to an opposite position opposed to a crimper 7 from a retreat position together with a movable carriage 43 according to this, and then, the arm 17 is driven in turning by a servomotor 31, and a sponge member 13 impregnated with lubricating oil is brought near toward the crimper 7 from a retreat condition, and is brought into contact with a mold surface 7a of the crimper 7, and oil is fed to the crimper 7. A prescribed quantity of lubricating oil is imparted to the sponge member 13 in the prescribed timing from an oil feeder 23 through an oil feeding pipe 21 by control of the control 33.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lubricating oil supply device for a terminal crimping machine for lubricating a crimper for crimping a terminal.

[0002]

2. Description of the Related Art In a terminal crimping machine for crimping a crimp terminal to an end of a wire, when a barrel portion of the crimp terminal is pressed by an anvil and a crimper, a high temperature and a high pressure are applied between the barrel portion of the crimp terminal and the crimper. After the seizure occurs, the crimping terminal remains attached to the crimper after pressing, which may hinder the crimping operation.Therefore, supply lubricating oil to the crimper's mold surface every time crimping is performed. It has become. Further, by supplying the lubricating oil in this way, a stable curl shape of the barrel portion of the crimp terminal after crimping can be obtained, and rust prevention of the crimp terminal is achieved.

On the other hand, in a conventional lubricating oil supply device for a terminal crimping machine, lubricating oil is sprayed onto a crimper mold surface by a predetermined spray nozzle each time crimping is performed a predetermined number of times. ing.

[0004]

However, according to the conventional method of supplying oil by spraying the lubricating oil onto the crimper, the lubricating oil scatters around when the oil is supplied. There is a problem in the working environment that a worker drifts in and sucks it, and a problem in quality control in that scattered lubricating oil adheres to an unnecessary portion of the product and deteriorates the quality of the product.

In view of the above problems, an object of the present invention is to provide a lubricating oil supply device for a terminal crimping machine that can apply lubricating oil to a crimper without scattering lubricating oil.

[0006]

A technical means for achieving the above object is to perform terminal crimping by pressing a barrel portion of a crimp terminal on which a predetermined core of a wire is installed with an anvil. A lubricating oil supply device in a terminal crimping machine that supplies a predetermined lubricating oil to a mold surface of a crimper, wherein the coating means impregnated with the lubricating oil, and the coating means can be displaced toward and away from the crimper. By driving the supporting means and the supporting means, the applying means is brought closer to the crimper from a predetermined retracted state and is brought into contact with the mold surface of the crimper, and is separated from the crimper and And a driving means for evacuating to the evacuating state.

Preferably, the lubricating oil supply device further includes a counting means for counting the number of times of pressing and outputting a predetermined signal each time the predetermined number of times is counted. Each time there is a signal output, by driving the support means, the application means is brought closer to the crimper from the retracted state and brought into contact with the mold surface of the crimper, and is separated from the crimper to retract the crimper. It is better to evacuate to a state.

Preferably, the support means has a substantially rod-like shape, and the coating means is provided at one end of the support means, and the driving means is provided on a rotating shaft. The other end portion of the lubricating oil supply device is provided with a motor that rotatably supports the support means by its rotation axis by being connected, the lubricating oil supply device, every time there is the signal output from the counting means, By controlling the drive of the motor, the motor is driven to rotate the support means, and the application means is brought closer to the crimper from the retracted state and brought into contact with the mold surface of the crimper, and from the crimper, It is preferable that the apparatus further comprises a control unit for separating and retracting to the retracted state.

Further, preferably, the lubricating oil supply device further includes oil supply means for supplying a predetermined amount of the lubricating oil to the coating means at a predetermined timing through a predetermined oil supply pipe.

[0010] Preferably, the coating means is a porous foamed member.

[0011]

FIG. 1 is a perspective view showing the structure of a terminal crimping machine to which a lubricating oil supply device according to an embodiment of the present invention is applied. The terminal crimping machine includes a base 1, an anvil 3 installed on the base 1, and an up and down drive.
The crimper 7 presses the barrel portion 5a of the crimp terminal 5 (see FIG. 3) to perform crimping, a wire supply device 9, and a lubricating oil supply device 11. In FIG. 1, * 1 and * 2 are connected to each other.

The lubricating oil supply device 11 includes a sponge member (applying means) 13 made of foam rubber or the like, and a sponge member 13.
(Supporting means) 17 provided at the tip end (one end) 17a, an arm driving mechanism (driving means) 19 for rotating the arm 17 in the direction of arrow A and reciprocatingly driving it in the direction of arrow B, and oil supply. Sponge member 13 via tube 21
Lubricator (oil supply means) for supplying lubricating oil to oil
A counting unit (counting means) 25 for counting the number of times of pressing, an air supply unit 29 for supplying air to an air cylinder 27 described later provided in the lubricator 23 and the driving mechanism 19, and an output signal from the counting unit 25. And a control unit (control means) 33 for driving and controlling a servo motor 31 of the drive mechanism 19, which will be described later.

The arm 17 has an L-shape in which a rod-shaped member made of resin is bent at a right angle at an intermediate portion thereof.
A sponge member 13 is provided at the distal end portion 17a, and a proximal end portion (the other end portion) 17b is connected and fixed to a rotation shaft 31a of a servo motor 31 of the arm driving mechanism 19.

As shown in FIG. 2, the distal end portion 17a of the arm 17 is provided with a housing recess 17c in which the sponge member 13 is fitted and fixed.
The oil supply through hole 1 communicating with the outer periphery of the bent portion 17d bent at a right angle from the housing recess 17c of the tip portion 17a is provided therein.
7e are formed. An oil supply pipe 21 from an oil supply device 23 is connected to an opening on the bent portion 17d side of the through hole 17e, and lubricating oil from the oil supply device 23 is supplied to the sponge member through the oil supply tube 21 and the through hole 17e. 13, supplied to
The lubricating oil is impregnated in the sponge member 13.

The arm driving mechanism 19 is fixed to the base 41, a base 43 installed on the base 1, a movable base 43 reciprocally movable in the direction of arrow B with respect to the base 41,
An air cylinder 27 as a drive mechanism for reciprocatingly driving the movable table 43 in the direction of arrow B;
A servomotor (motor) 31 for rotating the arm 17 in the direction of arrow A is provided. In addition,
Here, the air cylinder 27 is used as a drive mechanism, but other drive such as a drive mechanism configured by a rack meshing with each other and a pinion connected and fixed to a rotating shaft of a motor controlled by a predetermined control unit 33. A mechanism may be employed.

A guide shaft 45 is fixed to the movable base 43. The guide shaft 45 is slidably held by a guide groove or the like (not shown) provided on the base 41, so that the movable base 43 has an arrow. It can reciprocate in the B direction.

The main body of the air cylinder 27 is
1, the piston rod (not shown) is fixed to the moving table 43 side, and the moving table 43 is reciprocated by the piston rod moving out of the cylinder. Air from the air supply unit 29 is supplied to the cylinder chambers on both sides of the piston of the air cylinder 27 through a predetermined air supply pipe.
The air is supplied to one of the cylinder chambers on both sides of the piston, and the air is exhausted from the other cylinder chamber, so that the piston rod is driven in and out.

Here, the direction of arrow B is a direction substantially perpendicular to the axial center direction C and the vertical direction of the crimp terminal 5 and the electric wire 51, and the moving table 43 and the arm 17 are located in front of the crimper 7 and the anvil 3. It reciprocates on the side or the rear side (here, the front side). Crimper 7
When the air cylinder 27 that does not apply the lubricating oil to the air cylinder 27 is contracted, as shown in FIG. 1, the arm 17 is at a retreat position at a predetermined distance from the crimper 7 and the anvil 3, and the air cylinder 27 is extended. Then, the arm 17 is moved to a position facing the crimper 7.

The servo motor 31 and the arm 17 are mounted so that the arm 17 is installed along a plane perpendicular to the arrow B direction, and the arm 17 is mounted along a plane perpendicular to the arrow B direction. The rotation is performed in the direction of arrow A. Accordingly, when the arm 17 is rotated by the servo motor 31 in the direction of the arrow A in a state where the air cylinder 27 is extended and the arm 17 is moved to the opposing position opposing the crimper 7 with the moving table 43, Accordingly, the sponge member 13 is moved toward and away from the crimper 7.

When the lubricating oil is not applied to the arm 17, the portion extending from the bent portion 17d to the distal end portion 17a is substantially in the vertical direction (the sponge member 13 is in the retracted state). From servo motor 31
Is rotated in a predetermined rotation direction, the sponge member 1
The arm 7 is pivoted in a direction in which the sponge member 3 approaches the crimper 7 and the sponge member 13 is in the raised position.
a, and lubricating oil is applied to the mold surface 7a (see the phantom line in FIG. 1).

When a predetermined amount of air is supplied from the air supply unit 29, the lubricator 23 supplies the lubricating oil in the tank 23a by a predetermined amount through the oil supply pipe 21 by the air pressure of the supplied air. It is supplied to the sponge member 13. The amount of oil supplied to the sponge member 13 in one oil supply can be adjusted by adjusting the adjustment knob 23b. Also, the amount of oil per one time is preferably about several drops.

The air supply unit 29 includes an air compressor (not shown) and compressed air from the air compressor.
And a plurality of solenoid valves (not shown) interposed in the air supply conduits for supplying the cylinder chambers and the oil supply unit 23, respectively. The air compressor and each solenoid valve are controlled by the control unit 33.

The counting section 25 counts the number of times of crimping based on a signal from the detecting means (not shown) such as a limit switch for detecting the vertical movement of the crimper 7 and performs crimping a predetermined number of times. And a signal output means (not shown) for outputting a predetermined signal every time. Also, the number of times of pressure bonding to output a signal can be changed by a predetermined input means.

The control unit 33 controls the air cylinder 2 through the air supply unit 29 based on the signal output from the counting unit 25.
The drive control of the servomotor 31 and the drive control of the servomotor 31 are performed to apply the lubricating oil to the crimper 7, while the drive control of the lubricator 23 is performed through the air supply unit 29 to perform the oil supply process to the sponge member 13.

The counting section 25 counts a predetermined number of times of crimping, and when a predetermined signal is input from the counting section 25 to the control section 33, the air cylinder 27 is first expanded from the contracted state. The arm 17
Is moved together with the moving table 43 from the retracted position shown in FIG.

Subsequently, the servo motor 31 is driven to rotate in a predetermined rotation direction, and the arm 17 is moved to the sponge member 13.
Is rotated from the retracted state to the state shown by the two-dot chain line in FIG. 1, and the sponge member 13 is brought into contact with the mold surface 7a of the crimper 7 at the raised position, and the sponge member 1
The lubricating oil impregnated in 3 is applied to the mold surface 7a.

Subsequently, the servo motor 31 is driven to rotate in a direction opposite to the predetermined rotation direction, the arm 17 is turned until the sponge member 13 is in the retracted state, and the air cylinder 27 is contracted. Arm 17 is movable table 4
3 and is retracted to the retreat position.

The application of the lubricating oil to the crimper 7 is automatically performed every time the crimping is performed a predetermined number of times set in the counting section 25. The lubrication process for the sponge member 13 is performed each time the lubricating oil is applied to the crimper 7 one or more times, and each time a signal is output from the counting unit 25 or a plurality of times. Each time there is a control unit 33
Instructs the air supply unit 29 to supply a predetermined amount of air, whereby the sponge member 13 is refueled.

As shown in FIG. 3, the wire supply device 9 is for automatically loading the end of the stripped wire 51 into the barrel portion 5a of the crimp terminal 5 installed on the anvil 3. When the worker installs the crimp terminal 5 on the anvil 3, the core wire 51 a at the end of the electric wire 51 is automatically installed in the barrel portion 5 a of the crimp terminal 5 by the electric wire supply device 9. The crimper 7 is lowered from the raised position, and the barrel portion 5a of the crimp terminal 5 is pressed by the anvil 3 and the crimper 7 and crimped to the electric wire 51 as shown in FIG. After the crimping, the crimper 7 is raised again to the ascending position, but since the lubricating oil is applied to the mold surface 7a of the crimper 7, the crimper 7 and the crimp terminal 5 are quickly separated and the crimp terminal 5 is separated. The crimper 7 is prevented from biting and rising with the crimper 7.

As described above, according to the present embodiment, the sponge member 13 impregnated with the lubricating oil is
a, the lubricating oil is applied to the crimper 7, so that the lubricating oil can be prevented from being scattered as in the prior art, and as a result, the working environment and the quality of the product can be improved. I can do it.

When the arm drive mechanism 19 drives the arm 17 under the control of the control unit 33, the lubricating oil is applied to the crimper 7 automatically at a predetermined number of times of press-fitting. It is not necessary to apply the lubricating oil, so that the workability is good and the lubricating oil can be surely applied to the crimper 7.

Further, the lubricating oil is automatically supplied from the lubricator 23 to the sponge member 13 at a predetermined timing under the control of the control unit 33. There is no need to impregnate and the work efficiency is good.

When the lubricating oil is not applied to the crimper 7, the arm 17 keeps the crimper 7 and the anvil 3.
Since the arm 17 is retracted to the retracted position shown in FIG. 1 which is sufficiently distant from the anvil 3, the arm 17 does not hinder the loading and unloading of the crimp terminal 5 from the anvil 3, and the work can be performed smoothly. .

In the present embodiment, the sponge member 13 is used as the applying means, but a braided member such as a cotton-like member or a cloth, or a brush may be used as the applying means.

[0035]

As described above, according to the first to fifth aspects of the present invention, the lubricating oil is applied to the crimper by bringing the applying means impregnated with the lubricating oil into contact with the crimper mold surface. Therefore, it is possible to prevent the lubricating oil from being scattered as in the related art, and as a result, it is possible to improve the working environment and the quality of the product.

Further, when applying the lubricating oil, the driving means drives the supporting means to bring the applying means close to the crimper from a predetermined retracted state so as to come into contact with the crimper mold surface and separate from the crimper. Since the operation is automatically performed by being evacuated to the evacuated state, there is no need for the operator to apply lubricating oil, and the work efficiency is high.

According to the second aspect of the present invention, the oil is automatically supplied every time the crimping is performed a predetermined number of times, even if the operator does not instruct the lubricating oil supply device to supply the oil. , Oil supply can be reliably performed and work efficiency can be further improved.

According to the fourth aspect of the present invention, the supply of the lubricating oil to the application means is automatically performed at a predetermined timing by the oil supply means, so that the operator has to bother with the application means. There is no need to impregnate the lubricating oil, and the work efficiency is good.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a configuration of a terminal crimping machine to which a lubricating oil supply device according to one embodiment of the present invention is applied.

FIG. 2 is a cross-sectional view showing a partial configuration of an arm provided in the lubricating oil supply device shown in FIG.

FIG. 3 is a perspective view showing a state where crimping is performed by the terminal crimping machine of FIG. 1;

FIG. 4 is a perspective view showing a state in which a crimp terminal is crimped to an end of an electric wire.

[Explanation of symbols]

 Reference Signs List 3 anvil 5 crimp terminal 7 crimper 9 wire supply device 11 lubricating oil supply device 13 sponge member 17 arm 19 arm drive mechanism 23 lubricator 25 counting unit 27 air cylinder 29 air supply unit 31 servo motor 33 control unit 51 electric wire

Claims (5)

[Claims] 1. A terminal crimping machine for supplying a predetermined lubricating oil to a mold surface of a crimper for crimping a terminal by pressing a barrel portion of a crimp terminal on which a core of a predetermined electric wire is installed with an anvil. A lubricating oil supply device, comprising: an application unit impregnated with the lubricating oil; a support unit that supports the application unit so as to be able to approach and separate from the crimper; and by driving the support unit, A driving unit for moving the application unit from a predetermined retracted state toward the crimper to come into contact with the mold surface of the crimper, and separating from the crimper to retract to the retracted state. Lubricating oil supply device for terminal crimping machine. 2. The lubricating oil supply device further includes a count unit that counts the number of times of press bonding and outputs a predetermined signal each time the count is performed a predetermined number of times. The drive unit includes the signal from the count unit. Each time there is an output, by driving the support means, the applying means is brought closer to the crimper from the retracted state and brought into contact with the mold surface of the crimper, and is separated from the crimper to cause the retracted state. The lubricating oil supply device for a terminal crimping machine according to claim 1, wherein the lubricating oil supply device is retracted. 3. The support means has a substantially rod-like shape, and the coating means is provided at one end of the support means, and the driving means is provided at the other end of the support means on a rotating shaft. A motor that supports the support means so that the support means can be driven to rotate by a rotation shaft thereof by being connected to the lubricating oil supply device, each time the signal output from the counting means is provided, By controlling the drive, the motor is driven to rotate the support means, and the application means is brought closer to the crimper from the retracted state and brought into contact with the crimper mold surface, and is separated from the crimper. 3. The lubricating oil supply device for a terminal crimping machine according to claim 2, further comprising control means for evacuating to the retracted state. 4. The lubricating oil supply device further comprises oil supply means for supplying a predetermined amount of the lubricating oil to the application means at a predetermined timing through a predetermined oil supply pipe. 3. The lubricating oil supply device in the terminal crimping machine according to any one of 3. 5. The lubricating oil supply device for a terminal crimping machine according to claim 1, wherein said coating means is a porous foam member.