JPH0935847A - Lubricating oil supply device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize prevention of forgetting application of lubricating oil by surely separating a terminal metal fitting from an upper die after press work, preventing damage to an upper/lower dies, and eliminating necessity for applying the oil one by one with hand work by a worker. SOLUTION: A lubricating oil supply device OS is provided in an applicator A, to automatically supply lubricating oil so as to easily separate a pressed terminal metal fitting 32 from an upper die 22. The lubricating oil supply device OS, having an air supply device 40, lubricator 50 receiving supply of air and a nozzle 60 blowing lubricating oil, is constituted by these members as a unit. A blow port 61 of the nozzle 60 is arranged in the vicinity of the upper die 22, after pressing by a prescribed number of times, to automatically blow lubricating oil to a press surface of the upper die 22.

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. Specifically, the present invention relates to a device that is applied to a terminal crimping device that crimps terminal fittings to the ends of electric wires by pressing with a pair of upper and lower molds, and that can automatically supply lubricating oil to the molds. Is.

[0002]

2. Description of the Related Art A terminal crimping device called an applicator as shown in FIG. 3 has been conventionally used for crimping a terminal fitting to an end of an electric wire. With reference to FIG. 3, in this applicator 1, while the terminal fitting 2a is intermittently fed in the direction of the white arrow, the electric wire E is supplied from the other end, and the terminal fitting is automatically and sequentially attached to the end of the electric wire E. 2a can be crimped.

More specifically, in the applicator 1, the terminal crimping portion 3 is provided with the upper die 3a, and the base 4 is provided with the lower die 4a. The upper die 3a moves vertically with respect to the lower die 4a. It is like this. On the other hand, referring to FIG. 4, a large number of terminal fittings 2a are connected by a long feed plate 2b at predetermined intervals. The terminal chain 2 is composed of the terminal fittings 2a and the feed plate 2b. The terminal chain 2 is wound in advance in a roll shape, and is sequentially fed out and fed to the applicator 1. ing. The feed plate 2b is provided with many pilot holes C at intervals P corresponding to the intervals between the terminal fittings 2a. Further, referring to FIG. 3, a terminal feeding portion 5 is connected to the terminal crimping portion 3. The terminal feeding portion 5 is provided with an arm 5a that swings around the rotation axis S. The arm 5a swings in conjunction with the vertical movement of the upper mold 3a. A feed claw 5b for feeding the terminal fitting 2a is provided at the tip of the arm 5a.

That is, each time the upper die 3a reciprocates up and down, the arm 5a swings once. When the arm 5a swings, the feed claw 5b engages with the pilot hole C of the terminal chain 2, which causes the terminal chain 2 to be intermittently fed and the terminal fitting 2a to move to the lower die 4a. Supplied on.
In addition, the electric wire E is connected to the lower mold 4 by an electric wire feeder not shown.
supplied on a. Then, the upper die 3a is moved downward and the electric wire E and the terminal fitting 2a are pressed by the two dies 3a and 4a, whereby the terminal fitting 2a is crimped to the electric wire E. When this work is completed, the next terminal fitting 2a is supplied by the feed claw 4b and the electric wire E is supplied, and the same work is continuously performed.

By the way, conventionally, when the crimping work is continuously performed, the pressed terminal metal fitting 2a may remain stuck to the upper mold 3a after being pressed by both the molds 3a and 4a. . Therefore, the pressed terminal metal fitting 2a rises together with the upper mold 3a and descends again to be pressed together with the next supplied terminal metal fitting 2a, resulting in poor crimping of the terminal metal fitting 2a and damage to both molds 3a, 4a. The applicator 1 may have been damaged. In order to solve this problem, conventionally, the applicator 1 is temporarily stopped after pressing a predetermined number of times, and an operator oils the upper mold 3a with an oil bottle to press the pressed terminal metal fitting 2a.
It was easy to get away from. Then, when the applied oil was running out, it was time to re-lubricate.

[0006]

However, the above-mentioned lubrication work is troublesome for the operator, and in some cases, there is a risk that the lubrication may be forgotten and the above-mentioned trouble may occur. Further, there are many kinds of terminal fittings 2a depending on their shapes and materials, and press pressures corresponding to the respective kinds of terminal fittings 2a are different. Therefore,
The frequency with which the oil applied to the upper mold 3a is cut off depends on the type of the terminal fitting 2a. That is, the lubrication frequency is the terminal fitting 2
It depends on the type of a. Therefore, there is a possibility that the operator may mistake the timing of lubrication and cause the above trouble.

Therefore, an object of the present invention is to automatically lubricate a terminal when crimping a terminal using a terminal crimping device without the operator having to stop the device and lubricate the die one by one. The purpose of the present invention is to provide a lubricating oil supply device capable of performing a smooth and favorable terminal crimping operation.

[0008]

In order to achieve the object of the present invention, a lubricating oil supply apparatus according to claim 1 is connected to a base, a terminal crimping portion provided on the base, and a terminal crimping portion. The terminal crimping portion includes a slide base that is erected on the base, a shank that can slide up and down along the slide base, an upper die that is provided at the lower end of the shank, and an upper die. It has a lower mold provided on the bed in a state of facing the mold, and the terminal feed unit intermittently supplies the terminal chain to the lower mold in conjunction with the vertical movement of the upper mold, Applied to a terminal crimping device in which an electric wire is supplied to a lower mold by a predetermined supply means, and the electric wire and one terminal metal fitting that is a component of a terminal chain are pressed by an upper mold and a lower mold. Lubricating oil supply device installed on the slide base And a lubricator connected to the upstream side of the blow-out nozzle, and an air supply air to the lubricator. And an air supply unit,
Counting means for counting the number of crimping times, judging means for judging whether or not the number of crimping times counted by the counting means has reached a predetermined number, and the number of crimping times has reached the predetermined number of times. When the discriminating means makes a discrimination, it has a feeding means for feeding air to the lubricator for a predetermined time.

According to this structure, the following operation is achieved. The number of times of crimping by the terminal crimping device is counted by the counting means. The discriminating means discriminates whether or not the counted number of times of crimping has reached a predetermined number. This predetermined number of times corresponds to the type of terminal fitting to be crimped, and when the terminal fitting is continuously pressed by the upper die and the lower die, the pressed terminal fitting is reliably separated from the upper die. It can be set to the number of times that it is possible. When the number of times counted by the counting means reaches a predetermined number, the feeding means feeds air to the lubricator for a predetermined time. This produces a mixture of air and oil, which is sent to the blowing nozzle. The lubricating oil blown out from the blowout port of the blowout nozzle is blown onto the press surface of the upper mold.

In order to achieve the object of the present invention, a lubricating oil supply apparatus according to a second aspect includes a base, a terminal crimping portion provided on the base, and a terminal feeding portion connected to the terminal crimping portion. The terminal crimping part includes a slide base standing on the base, a shank that can slide up and down along the slide base, an upper mold provided at the lower end of the shank, and a state facing the upper mold. It has a lower mold provided on the base,
While the terminal chain is interlocked with the vertical movement of the upper die by the terminal feeding portion and is intermittently supplied to the lower die, the electric wire is supplied to the lower die by a predetermined supply means, and the electric wire and the terminal chain are connected. A lubricating oil supply device applied to a terminal crimping device for crimping one terminal fitting, which is a component, by pressing with an upper die and a lower die, the lubricating oil being attached to the slide base, and the lubricating oil is crimped A blowout nozzle in which a blowout port is arranged so as to be blown to the barrel of the terminal metal fitting, and a lubricator connected to the upstream side of the blowout nozzle,
An air supply unit for supplying air to the lubricator is provided, and the air supply unit determines whether or not the number of times of pressure bonding counted by the counting unit and the number of times of pressure bonding counted by the counting unit has reached a predetermined number. And a sending means for sending air to the lubricator for a predetermined time when the judging means judges that the number of times of crimping has reached the above-mentioned predetermined number of times.

According to this structure, the following operation is achieved. The lubricating oil blown out from the blowout port of the blowout nozzle is blown onto the barrel of the terminal fitting to be crimped. That is,
By pressing the barrel coated with the lubricating oil with the upper die and the lower die, the lubricating oil can be applied to the pressing surface of the upper die. As a result, in the invention according to claim 1, the lubricating oil is directly supplied to the pressing surface of the upper mold, whereas in the invention according to the present invention, the lubricating oil is indirectly supplied.

In order to achieve the object of the present invention, a lubricating oil supply device according to a third aspect of the present invention is the lubricating oil supply device according to the first or second aspect, wherein the blowout nozzle, the lubricator and the air supply unit are configured as a unit. It is characterized by being. According to this configuration, claim 1 or 2
The same effect as that of the invention according to the first aspect is exhibited. In addition, since the blowing nozzle, the lubricator and the air supply unit are configured as a unit, they have compatibility with various terminal crimping devices.

[0013]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows an embodiment of the present invention, and is a view showing an applicator A equipped with a lubricating oil supply device OS. With reference to FIG. 1, the applicator A presses the lower die 21 and the upper die 22 that moves up and down with respect to the lower die 21 to attach the terminal fitting 32 to the end E1 of the electric wire E to be supplied. It is a device for continuously and automatically crimping, and is a known terminal crimping device which has been conventionally used. Briefly describing the structure of the applicator A, the applicator A
Is a base 10 and a terminal crimping portion 20 provided on the base 10.
And a terminal feeding portion (not shown) connected to the terminal crimping portion 20.

The terminal crimping portion 20 includes a guide block 23.
A shank 24, the upper mold 22 attached to the lower end of the shank 24, and the lower mold 2 provided on the base 10.
And 1. The lower mold 21 is arranged so as to face the upper mold from below. When the upper mold 22 descends and approaches the lower mold 21, the terminal fitting 32 and the electric wire E can be pressed. It has become.

The guide block 23 is erected on the base 10 and serves as a slide base for the shank 24. That is, the shank 24 is the guide block 23.
It is slidable up and down along. The shank 24 is connected to a press ram (not shown) and is slid up and down as the press ram moves up and down.

The terminal feeding portion has a swing arm that swings in conjunction with the vertical movement of the shank 24. A member called a feed claw is attached to the tip of the swing arm. The feed claw is adapted to engage with the engagement hole 33 of the terminal chain 30. That is, when the swing arm swings, the feed claw engages with the terminal chain body 30 and feeds the terminal fitting 32 onto the lower die 21.

The terminal chain 30 has a feed plate 31 and a large number of terminal fittings 32 that are connected to the feed plate 31 at predetermined intervals. The feed plate 31 has the engagement holes 33 at a predetermined pitch.
Are formed. The many terminal fittings 12 and the feed plate 11 form a terminal chain 10. When the swing arm swings, the feed claw engages with the engagement hole 33. Therefore, the terminal fitting 32 is intermittently fed in conjunction with the vertical movement of the upper die 22 and supplied onto the lower die 21.
Then, the lower mold 21
By pressing the electric wire E supplied above and the terminal metal fitting 32 supplied on the lower mold 21 between the upper mold 22 and the lower mold 21, both E and 32 can be crimped. .

A feature of the present embodiment is that the applicator A is equipped with a lubricating oil supply device OS to solve the above-mentioned specific problem that occurs when the terminal crimping work is performed. The lubricating oil supply device OS includes an air supply device 40 for supplying compressed air, and a lubricator 50 to which air is supplied from the air supply device 40.
And a nozzle 60 for spraying mist-like lubricating oil discharged together with air from the lubricator 50 onto the press surface of the upper die 22, the nozzle 60 being fixed to the guide block 23, The blower outlet 61 of 60 is arranged near the upper die 22. The air supply device 40 has a function of counting the number of up and down reciprocating movements of the upper die 22, that is, the number of crimps, and the actual crimping is performed. When performing the work, if the number of crimping times reaches a predetermined number of times, it is possible to send air to the lubricator 50, and the air supply device 40, the lubricator 50 and the nozzle 60 are The point is that it is configured as.

The nozzle 60 is provided with a bracket 61. The nozzle 60 is fixed to the guide block 23 by a bolt 62 via the bracket 61. Since the nozzle 60 and the lubricator 50 are well known, detailed description thereof will be omitted. The nozzle 60 and the lubricator 50 and the lubricator 50 and the air supply device 40 are connected by hoses H1 and H2, respectively.

The air supply device 40 includes a counter 41 for counting the number of times of crimping and a discriminator 42 for discriminating whether or not the number of times of crimping counted by the counter 41 has reached a prescribed number.
When the discriminating unit 42 discriminates that the number of times of crimping has reached the prescribed number, an air feeding unit 43 for feeding air to the lubricator 50, and an operating unit 44 for predetermining the prescribed number of times.
And The operation switch 44 includes an operation switch 4
4a is provided, and the number of reciprocations (the number of crimps) of the upper mold 22 to be discriminated by the discriminating section 42 can be set to a predetermined number by the operation switch 44a. This set value can be freely changed.

The counter 41 includes a sensor 41a. This sensor 41a can be attached to a press ram, for example, and can detect the reciprocating motion of the upper die 22. However, the sensor 41a is
For example, it can be attached near the lower mold 21. In this case, the shank 24 is provided with a contact member, and the sensor 41
A limit switch can be used as a.
That is, when the shank 24 is lowered, the limit switch can be put into the input state by the contact member. The vertical reciprocating motion of the upper die 22 detected by the sensor 41a is input to the counter 41 as an input signal for each reciprocating motion and is added. In addition, in order to detect the reciprocating motion of the upper mold 22, the number of times of rocking of the rocking arm that rocks in conjunction with the vertical motion of the shank 24 may be counted. The counter 41 transmits the count number in real time to the determination unit 42 for each count.

Although not shown in the drawing, the air feeding section 43
A high pressure air source (eg a compressor) is included,
An electromagnetic valve that controls the flow of air is interposed between the high pressure air source and the hose H2. This electromagnetic valve is adapted to open for a predetermined time (for example, 1 to 2 seconds) in response to a command from the discriminating section 42. The command from the discriminating unit 42 is an electric signal (current) for operating the solenoid of the solenoid valve, and the discriminating unit 42 reaches the set number of times of crimping by the upper die 22 and the lower die 21. It is output at times. In addition, when the determination unit 42 outputs a signal for operating the solenoid of the solenoid valve,
At the same time, a reset signal for resetting the counter 41 is output. As a result, the counter 41
Will count the number of crimps from 1.

According to this embodiment, the following operational effects are obtained. When advancing the terminal crimping work by the applicator A, the counter 41 can count the number of reciprocating motions of the upper mold 22. The counted reciprocating motion of the upper die 22 is determined as the number of crimping times of the terminal fitting 32 by the discriminating unit 42.
Is input to On the other hand, the operation switch 44a can set the number of times of pressure bonding to be determined by the determination unit 42 to a predetermined number. The required number of times is set according to the type of the terminal fitting 32 to be crimped. That is, when the terminal fitting 32 is continuously pressed by the upper die 23 and the lower die 21, the pressed terminal fitting 32 cannot be separated from the upper die 22 when the number of presses exceeds a predetermined number. Sometimes. To avoid this inconvenience,
The number of times is set according to the type of the terminal fitting 32.

The discriminating unit 42 discriminates whether or not the number of times of crimping has reached the set number. Then, if it is determined that the set number of times has been reached, the determination unit 42 outputs a signal for opening the solenoid valve of the air feeding unit 43. This allows air to pass through the hose H2 and the lubricator 50.
Is supplied for a predetermined time. As a result, the mist-like lubricating oil reaches the nozzle 60 through the hose H1, and the lubricating oil blown out from the outlet 61 is applied to the pressing surface of the upper die 22. Therefore, even if the terminal fittings 32 are continuously pressed, there is no inconvenience that the pressed terminal fittings 32 are not separated from the upper mold 22, and good terminal crimping work can be smoothly performed. Moreover, since the lubricating oil application work is automatically performed, it does not bother the operator and there is no fear of forgetting to apply the lubricating oil. Reference numeral 51 indicates an adjustment dial for adjusting the amount of lubricating oil discharged from the lubricator 50. By operating the adjustment dial 51 to adjust the amount of lubricating oil, a desired amount of lubricating oil to be applied can be discharged.

The preset number of times can be arbitrarily set by the operation switch 44a. Therefore, the number of times corresponding to the type of the terminal fitting to be crimped can be set, and even if the type or the like of the terminal fitting 32 to be crimped is changed, this can be easily accommodated. That is, even when the type of the terminal fitting 32 is changed, the number of times the pressed terminal fitting 32 can be reliably separated from the upper mold 22 when the terminal fitting 32 is pressed by the upper die 22 and the lower die 21. Can be set to.

Particularly, in this embodiment, the nozzles 60,
Since the lubricator 50 and the air supply unit 40 are configured as a unit, the terminal crimping device can be made compatible with each other. Therefore, regardless of the type of the terminal crimping device (whether it is a so-called side feed type or end feed type), the lubricating oil supply device O
Can be equipped with S.

The present invention is not limited to the above embodiment, and a modified example as shown in FIG. 2 can be considered. With reference to FIG. 2, the difference between this modification and the embodiment is the position of the outlet 61 of the nozzle 60. That is,
In one embodiment, the air outlet 61 was arranged in the vicinity of the upper die 22, and the lubricating oil was applied to the press surface of the upper die 22, but in the present modification, the air outlet 61 supplies the lubricating oil. It is located in the vicinity of the terminal fitting 32 to be closed. Note that other configurations are similar to those of the one embodiment, and therefore their description is omitted.

The blowout port 61 according to this modification has a lower mold 21.
Lubricating oil is sprayed on the outside of the barrel 34 of the terminal fitting 32 immediately before being supplied to the upper portion. Thus, if the lubricating oil adheres to the inside of the barrel 34, it may be sprayed on the outside of the barrel 34 depending on the specifications of the electric wire E (referred to as “scaled electric wire”) to which the terminal fitting 32 is crimped. This is because there are some unfavorable ones due to the contact resistance of the crimping portion. For example, this is a case where the scaled electric wire is a constituent element of an automobile wire harness. Further, in order to reliably prevent the lubricating oil from being sprayed on the inside of the barrel 34, a shielding plate for shielding the inside of the barrel 34 may be provided. Note that, depending on the specifications of the length-adjusted electric wire, there may be no effect even if the lubricating oil adheres to the inside of the barrel 34 (for example, a wire harness for a copying machine). In such a case, the terminal metal fitting 32 is used. It is also possible to spray the lubricating oil on the whole.

In this modification, the terminal fitting 32 to be pressed is used.
Since the lubricating oil is applied to the upper mold 22, the lubricating oil can be indirectly supplied to the upper mold 22. Therefore, as in one embodiment,
Even if the terminal fittings 32 are continuously pressed, the pressed terminal fittings 32 do not become separated from the upper mold 22, and the favorable terminal crimping work can be smoothly performed. Moreover, since the lubricating oil is applied to the terminal fitting 32, even if it is difficult to directly spray the lubricating oil onto the upper die 22, the lubricating oil can be reliably supplied to the upper die 22. In addition, various design changes can be made within the scope of the present invention.

[0030]

According to the invention of claim 1, when the crimping work is performed a preset number of times, the lubricating oil can be automatically supplied to the upper mold. The pressed metal terminal does not remain stuck to the upper mold due to the oil applied to the oil running out. Further, since the lubrication work is automatically performed, it does not bother the operator and there is no fear of forgetting the lubrication. Therefore, it is possible to prevent the adverse effect caused by the pressed terminal metal fitting being left stuck to the upper mold, that is, the defective crimping of the terminal metal fitting, the damage of the upper mold and the lower mold, and the damage of the terminal crimping device itself.

According to the invention of claim 2, the same effect as that of the invention of claim 1 can be obtained. Particularly, in the invention according to the present claim, since the lubricating oil is indirectly supplied to the pressing surface of the upper mold by applying the lubricating oil to the barrel of the terminal fitting to be crimped, the lubricating oil is directly supplied to the upper mold. Even if it is difficult to do so, the lubricating oil can be reliably supplied. According to the third aspect of the invention, the same effects as those of the first or second aspect of the invention can be obtained. In addition, in the invention according to this claim, since the lubricating oil supply device can be made compatible with the terminal crimping device, it does not depend on the type of the terminal crimping device (so-called side feed type or end feed type. Can be equipped with a lubricating oil supply device.

[Brief description of drawings]

FIG. 1 is a schematic view of an applicator equipped with a lubricating oil supply device according to an embodiment of the present invention.

FIG. 2 is a schematic view of an applicator equipped with a lubricating oil supply device according to a modification.

FIG. 3 is a front view showing the structure of an applicator.

FIG. 4 is a perspective view of a terminal chain.

[Explanation of symbols]

 A Applicator E Electric wire E1 Electric wire end OS Lubricating oil supply device 10 Platform 20 Terminal crimping part 21 Lower mold 22 Upper mold 23 Guide block 24 Shank 30 Terminal chain 32 Terminal fitting 40 Air supply device 41 Counter 42 Discrimination part 43 Air feed Part 50 Lubricator 60 Nozzle 61 Air outlet

Claims (3)

[Claims] 1. A base and a terminal crimping portion provided on the base,
The terminal crimping section includes a terminal feeding section connected to the terminal crimping section, and the terminal crimping section is provided on a slide base that is erected on the base, a shank that can slide up and down along the slide base, and a lower end of the shank. It has an upper mold and a lower mold that is provided on the base plate in a state of facing the upper mold, and the terminal feed unit causes the chain of terminals to interlock with the vertical movement of the upper mold to intermittently lift the upper mold. And the electric wire is supplied to the lower mold by a predetermined supply means, and the electric wire and one terminal metal fitting that is a component of the terminal chain are pressed by the upper mold and the lower mold to crimp. A lubricating oil supply device applied to a terminal crimping device, which is attached to the slide base and has a blowout nozzle having a blowout port arranged in the vicinity of the upper die so that the lubricating oil is blown to the press surface of the upper die. , Connected to the upstream side of the blowing nozzle A lubricator and an air supply unit for supplying air to the lubricator, the air supply unit has a counting unit for counting the number of crimping times, and the number of crimping times counted by the counting unit has reached a predetermined number. And a sending means for sending air to the lubricator for a predetermined time when the judging means judges that the number of times of crimping has reached the above-mentioned predetermined number of times. Lubricating oil supply device. 2. A base and a terminal crimping portion provided on the base,
The terminal crimping section includes a terminal feeding section connected to the terminal crimping section, and the terminal crimping section is provided on a slide base that is erected on the base, a shank that can slide up and down along the slide base, and a lower end of the shank. It has an upper mold and a lower mold that is provided on the base plate in a state of facing the upper mold, and the terminal feed unit causes the chain of terminals to interlock with the vertical movement of the upper mold to intermittently lift the upper mold. And the electric wire is supplied to the lower mold by a predetermined supply means, and the electric wire and one terminal metal fitting that is a component of the terminal chain are pressed by the upper mold and the lower mold to crimp. A lubricating oil supply device applied to a terminal crimping device, which is attached to the slide base and has a blowout nozzle in which a blowout port is arranged so that the lubricating oil is blown to the barrel of the terminal fitting to be crimped, and a blowout nozzle. Connected to the upstream side of A lubricator and an air supply unit for supplying air to the lubricator, the air supply unit has a counting unit for counting the number of crimping times, and the number of crimping times counted by the counting unit has reached a predetermined number. And a sending means for sending air to the lubricator for a predetermined time when the judging means judges that the number of times of crimping has reached the above-mentioned predetermined number of times. Lubricating oil supply device. 3. The lubricating oil supply apparatus according to claim 1 or 2, wherein the blowout nozzle, the lubricator and the air supply section are configured as a unit.