JP2007311179A - Feed brake mechanism of chained terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a new feed brake mechanism for chained terminals without producing linty cutting dust when braking the feed of the plated chained terminals. <P>SOLUTION: This feed brake mechanism is structured to brake the feed of the chained terminals T by frictional engagement of a rolling element 22 rolling on a surface of a terminal t3 with a frictional engagement means 23, whereby plating applied to the surfaces of the terminals is never worn out. Even when a part of the plating is separated and adheres to the surface of the rolling element 22, it is removed from the surface by the frictional engagement with the frictional engagement means 23, whereby linty cutting dust is prevented from being produced by damaging the terminal surface by its fine particles. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a braking mechanism for temporarily stopping a chained terminal fed toward a terminal crimping device or the like. More specifically, the plating applied to the surface of the chained terminal causes sliding friction associated with braking. The present invention relates to a new feed braking mechanism for a chain-like terminal that does not wear and separate into fine particles and adheres to a braking portion and damages the surface of the terminal.

2. Description of the Related Art Conventionally, a terminal crimping device that crimps a terminal to an electric wire terminal portion has been used (see, for example, Patent Document 1 below).
The structure of this terminal crimping apparatus will be outlined with reference to FIGS. 9 to 11. A terminal guide rail for guiding and supplying terminals T linked in the horizontal direction in the direction of arrow A is provided below the base frame 1. 2 and an anvil 3 serving as a receptacle when crimping an electric wire to each terminal.
Above the anvil 3 is provided an elevating crimper 5 that is guided by a pair of vertical rails 4 and 4 to move up and down. When driven by a driving device (not shown), the elevating crimper 5 cooperates with the anvil 3. The core wire portion and the insulation coating portion of the electric wire are respectively crimped to the core wire barrel t1 and the insulation coating barrel t2 of each terminal T.

A cam roller 7 is rotatably supported by a support shaft 7a on a side arm 6 that moves up and down integrally with the elevating crimper 5.
A cam groove 10 in which the cam roller 7 is loosely fitted is provided in a swing arm 9 that is swingably supported by a support shaft 8 provided on the upper portion of the base frame 1.
Further, the feed claw 12 supported on the swing end of the swing arm 9 so as to be swingable by the support shaft 11 has its rear end 12a urged upward by the coil spring 13, and its front end 12b is lowered. It is adapted to engage with a through hole t4 provided in the carrier portion t3 of T.
Thus, each time the lifting / lowering crimper 5 is lowered, the swinging end of the swinging arm 9 is displaced to the front side in the terminal feeding direction by the engagement of the cam roller 7 and the cam groove 10. T can be moved forward intermittently.

A brake plate 14 is provided at the rear of the terminal guide rail 2 for braking and temporarily stopping the terminal T that moves intermittently forward.
As shown in an enlarged view in FIG. 11, the braking plate 14 has an end opposite to the terminal T protruding downward, and a lower surface thereof serving as a support portion 14 a that abuts on the upper surface of the terminal guide rail 2. ing.
Further, a portion of the braking plate 14 that vertically faces the carrier portion t3 of the terminal T protrudes downward, and a lower surface thereof is a sliding portion 14b that slides on the upper surface of the carrier portion t3 of the terminal T.

Further, a bolt 15 passing vertically through the brake plate 14 in the vicinity of the support portion 14a passes through the terminal guide rail 2 and extends downward, and a wing nut 16 is screwed to the lower end thereof so that the terminal guide rail is engaged. A plurality of disc springs 17 are held between the two.
As a result, the spring force of the disc spring 17 pulls the bolt 15 downward, so that the brake plate 14 swings downward with the support portion 14a as a fulcrum, and the slide portion 14b moves the carrier portion t3 of the terminal T to the terminal guide. Press against the upper surface of the rail 2.
Therefore, since the frictional resistance accompanying the sliding with the sliding portion 14b of the brake plate 14 continuously acts on the terminal T, the terminal T that is intermittently fed forward by the feeding claw 12 is prevented from overrun. Thus, the terminal T can be accurately positioned with respect to the anvil 3.

In addition, on the side surface of the terminal guide rail 2, a lever 18 is swingably supported by a horizontally extending support shaft 18 a, and a cam portion 18 b is in contact with the lower surface of the tip 14 c of the brake plate 14.
When the lever 18 is swung counterclockwise from the state shown in FIG. 9, the cam portion 18 b lifts the tip 14 c of the brake plate 14, so that the lower surface of the sliding portion 14 b and the upper surface of the terminal guide rail 2 are A gap is formed between the two.
Thereby, the state in which the brake plate 14 can be lifted and the terminal T can be replaced and the state in which the brake plate 14 is lowered and the terminal T is braked by the sliding portion 14b can be easily switched by the swinging operation of the lever 18. it can.

  An example of a braking mechanism that temporarily stops a chained terminal that is intermittently fed toward a terminal crimping device while having a configuration different from that of a braking plate is described in Patent Document 2 below.

No. 7-27591 JP 2000-133404 A

Incidentally, in recent years, the number of terminals plated with gold in order to increase the conductive efficiency has increased.
The gold-plated terminal has a structure in which the surface of a thin plate of brass or phosphor bronze, which is the material, is plated with nickel and then further plated with gold.
Therefore, when the above-described braking plate 14 is used to brake the forward movement of the gold-plated terminal T, the plating layer is worn away by the frictional sliding between the carrier portion t3 of the gold-plated terminal T and the sliding portion 14b of the braking plate 14, and hard. Nickel is separated into fine particles and gradually accumulates on the rear end corner portion 14d of the sliding portion 14b.

The nickel fine particles deposited on the rear end corner portion 14d of the sliding portion 14b damage the surface of the carrier portion t3 as the terminal T advances, and generate fine lint-like cutting waste.
And while crimping an electric wire to the terminal T to which this lint-like cutting waste has adhered, when this terminal T is inserted in a connector housing and a connector is completed, this cutting is carried out to the terminal T adjacent inside a connector. There is a problem that the scrap comes into contact and a short circuit occurs, or that the cutting waste comes into contact with the mating device to which the connector is assembled, resulting in malfunction.
Therefore, measures are taken to smooth the rear end corner portion 14d of the sliding portion 14b or to increase the surface roughness by polishing the surface, but the effect is temporary, and as time passes, the nickel The fine particles accumulate again, and lint-like cutting waste is generated.

  Therefore, the object of the present invention is to solve the above-mentioned problems of the prior art, and when braking the feeding of the chained terminal on which plating is applied, the plating is worn away by the sliding friction accompanying the braking, so that the fine particles form. It is an object of the present invention to provide a new feeding braking mechanism for a chain-like terminal that does not separate and adhere to the braking portion and damage the surface of the terminal.

The means described in claim 1 for solving the above problem is as follows.
A braking mechanism for braking the feeding of the chain terminal,
Rolling elements that roll on the surface of the chain terminal;
Friction engagement means for friction engagement with the rolling elements;
Holding means for holding the rolling elements and the friction engagement means;
Pressing means for pressing the rolling element against the surface;
It is characterized by providing.
The pressing means can press the rolling element against the terminal surface by urging the holding means, or can directly urge the rolling element against the terminal surface.
The friction engagement means may be a metal or polymer material member that frictionally slides on the surface of the rolling element, and also serves as a coil spring that urges the rolling element toward the terminal surface. You can also.

That is, the chain terminal feed braking mechanism according to claim 1 is a structure in which the rolling element rolls on the terminal surface instead of the brake plate sliding on the terminal surface unlike the conventional braking mechanism. Therefore, the plating applied to the terminal surface is not worn and separated into fine particles.
In addition, the frictional engagement between the rolling elements and the frictional engagement means brakes the rolling of the rolling elements and presses the rolling elements against the surface of the chained terminals. Can be braked.
Further, even if a part of the plating is separated into fine particles and adheres to the surface of the rolling element, the fine particles are removed from the surface by the frictional engagement between the rolling element and the frictional engagement means. It does not accumulate on the surface of the moving body and damage the terminal surface.

Further, the means described in claim 2 is the chain terminal feeding and braking mechanism according to claim 1,
The pressing means is configured to urge the holding means toward the surface;
The rolling element is held by the holding means so as to be able to contact with and separate from the surface;
It further comprises urging means held by the holding means for urging the rolling element toward the surface.
Note that a spring such as a coil spring or a resilient rubber body can be used as the biasing means.

That is, since the feeding engagement hole is provided through the carrier portion of the chain terminal, the rolling element may enter the engagement hole when rolling on the surface of the carrier portion.
In this case, in the chain terminal feeding and braking mechanism according to claim 2, the rolling elements are held so as to be able to come into contact with and separate from the terminal surface, and the rolling elements are moved toward the terminal surface by the urging means. Since it is biased, the rolling element can easily follow the step between the engagement hole and the general portion in the carrier portion.
As a result, the holding means is lifted by an impact when the rolling element crosses the step of the engagement hole, and the pressing force of the rolling element against the terminal surface is not lost, and the braking effect on the chained terminal by the rolling element is not lost.
In addition, even if the distance between the holding means and the terminal surface changes, the rolling elements can be displaced to absorb the change in the distance, so that the rolling elements can be reliably brought into contact with the terminal surface to connect the chained terminals. Can be braked.

Further, the means described in claim 3 is the chain terminal feeding and braking mechanism according to claim 1,
The holding means is fixed in a stationary state;
The rolling element is held by the holding means so as to be able to contact with and separate from the surface;
The pressing means is configured to be held by the holding means and bias the rolling element toward the surface.
Note that a spring such as a coil spring or a resilient rubber body can be used as the pressing means.

That is, the chain terminal feeding and braking mechanism described in claim 3 fixes the holding means in a stationary state, and the pressing means held by the holding means urges the rolling elements so that the rolling elements are connected to the terminals. It is a structure that presses against the surface.
Thereby, the rolling element can easily follow the step between the engagement hole and the general portion in the carrier portion.
In addition, the holding means is lifted by an impact when the rolling element gets over the step of the engagement hole provided in the carrier portion of the chain terminal, and the braking effect on the chain terminal by the rolling element is not lost.
Furthermore, since the holding means is fixed in a stationary state, the distance between the holding means and the terminal surface does not change, and the chained terminals can be braked by reliably bringing the rolling elements into contact with the terminal surface. .

According to a fourth aspect of the present invention, there is provided the chain terminal feeding and braking mechanism according to the first aspect.
The pressing means is configured to urge the holding means toward the surface,
The rolling element is held so as to be displaced integrally with the holding means.

  That is, the chain terminal feeding and braking mechanism described in claim 4 is extremely simple in that the holding means and the rolling element are integrally displaced and the rolling means is pressed against the terminal surface by urging the holding means. Even though it is a simple structure, the same effect can be obtained that the feeding of the chained terminals can be reliably braked without damaging the plating on the terminal surface.

Further, the means described in claim 5 is the chain terminal feeding and braking mechanism according to claim 2,
The rolling element is housed in a cylindrical casing having a male screw threaded on the outer peripheral surface thereof so as to be displaceable in the axial direction thereof,
The biasing means is configured to be housed in the cylindrical casing so as to bias the rolling elements toward the surface,
The holding means has a mounting hole that extends toward the surface and has a female screw that is screwed with a male screw of the cylindrical casing.

That is, in the chain terminal feeding and braking mechanism according to claim 5, when the cylindrical casing is screwed into the mounting hole provided in the holding means, the cylindrical shape with respect to the holding means is adjusted by adjusting the screwing amount. The position of the casing and thus the position of the rolling element relative to the holding means can be easily adjusted.
Further, since the rolling element is detachable from the terminal surface inside the cylindrical casing and is urged toward the terminal surface by the urging means, it is provided in the carrier portion of the chain terminal. It is possible to easily follow the step between the engagement hole and the general portion, and to absorb variations in the position of the cylindrical casing relative to the holding means.
Further, for example, when wear occurs on the rolling element, the cylindrical casing is removed from the holding means, and a new cylindrical casing is screwed in, so that the rolling element and the biasing means can be easily replaced.

Further, the means described in claim 6 is the chain terminal feeding and braking mechanism according to any one of claims 1 to 5,
The plurality of rolling elements are arranged in parallel in the feeding direction of the chain terminals.
At this time, a friction engagement member and a biasing means can be provided for each rolling element, or a plurality of rolling elements can be handled by a single frictional engagement member and biasing means.
Alternatively, a plurality of attachment holes can be provided in the holding means, and the cylindrical casing according to claim 5 can be attached to each attachment hole.

That is, in the feeding brake mechanism for the chain terminal described in claim 6, since the plurality of rolling elements roll on the surface of the terminal, it is necessary to brake and temporarily stop the feeding of the terminal. Sufficient braking force can be secured.
In addition, even if one of the plurality of rolling elements enters the engaging hole for feeding provided in the carrier portion of the chain terminal, the remaining rolling elements roll on the surface of the terminal. The feeding of the chain terminal can be reliably braked.

Further, the means described in claim 7 is the chain terminal feeding and braking mechanism according to any one of claims 1 to 6,
An engagement hole for feeding a terminal is provided in the carrier portion of the chain terminal,
The rolling element is positioned in the front-rear direction so as to engage with the rear edge of the engagement hole in the terminal feeding direction to temporarily stop the chained terminal.

That is, in the chain terminal feeding and braking mechanism according to the seventh aspect, the rolling elements are engaged with the rear edge of the engagement hole penetrating the carrier portion of the chain terminal.
Thereby, the terminal which is intermittently fed and moves forward can be surely temporarily stopped while being accurately positioned at a predetermined position in the front-rear direction.

Further, the means described in claim 8 is the chain terminal feeding and braking mechanism according to any one of claims 1 to 6,
An engagement hole for feeding a terminal is provided in the carrier portion of the chain terminal,
The rolling element has an outer shape and a position in the front-rear direction that are engaged with a rear edge and a front edge of the engagement hole in a terminal feeding direction to temporarily stop the chained terminal. It is characterized by.

That is, in the chain terminal feeding and braking mechanism according to the eighth aspect, the rolling elements are fitted to the rear edge and the front edge of the engagement hole penetrating the carrier portion of the chain terminal.
As a result, the terminal that is intermittently fed and moved forward or retracted backward by the terminal take-up roller can be more reliably temporarily stopped while being more accurately positioned at a predetermined position in the front-rear direction.

  According to a ninth aspect of the present invention, there is provided the chain terminal feeding and braking mechanism according to any one of the first to eighth aspects, wherein the rolling elements are spherical.

  That is, in the chain terminal feeding and braking mechanism according to claim 9, since the surface of the terminal and the spherical surface of the rolling element are in point contact, the plating peeled off in the form of fine particles is the spherical surface of the rolling element. Therefore, it is possible to reliably prevent lint-like cutting waste from being generated due to scratches on the terminal surface.

  According to a tenth aspect of the present invention, in the chain terminal feeding and braking mechanism according to any one of the first to eighth aspects, the rolling elements are cylindrical.

That is, in the feeding brake mechanism for chained terminals described in claim 10, since the surface of the terminal and the cylindrical surface of the rolling element are in line contact, the contact surface pressure between them can be reduced. it can.
Thereby, when the cylindrical rolling element rolls on the surface of the terminal, it is possible to reliably prevent the plating layer on the terminal surface from being worn and separated into fine particles.
Further, by appropriately selecting the axial length of the cylindrical rolling element, the cylindrical rolling element can be prevented from entering the engagement hole penetrating the carrier portion of the chain terminal. .

  According to the present invention, when braking the feeding of a chained terminal that has been plated, the plating is worn away by sliding friction accompanying the braking, and is separated into fine particles and adhered to the braking portion, and the surface of the terminal is removed. It is possible to provide a new feed braking mechanism for the chained terminal that is not damaged.

Hereinafter, with reference to FIGS. 1-8, each embodiment of the feeding brake mechanism of the chain-like terminal which concerns on this invention is described in detail.
In the following description, the same reference numerals are used for the same parts including the above-described prior art, and redundant descriptions are omitted, and the direction in which the chained terminals are fed is defined as the front-rear direction and the vertical direction as the vertical direction. The direction that is perpendicular to the direction and both directions and is horizontal is called the left-right direction.

1st Embodiment First, with reference to FIGS. 1-4, it demonstrates in relation to the terminal crimping | compression-bonding apparatus about the supply brake mechanism of the chain terminal of 1st Embodiment.

In the terminal crimping device 100 shown in FIG. 1, the braking plate 14 in the conventional terminal crimping device shown in FIGS. 9 to 11 is replaced with a braking plate (holding means) 20 constituting the feed braking mechanism of the present invention. The structure of other parts is the same.
Therefore, the characteristic part of the feed braking mechanism of the first embodiment using this braking plate 20 will be described mainly.

As shown in an enlarged view in FIG. 2, the overall shape of the brake plate 20 is substantially the same as that of the conventional brake plate 14, and can be easily replaced with the brake plate 14 in an existing terminal crimping device. .
More specifically, the end of the braking plate 20 opposite to the terminal T protrudes downward, and the lower surface thereof serves as a support portion 20 a that contacts the upper surface of the terminal guide rail 2.
In addition, a portion of the braking plate 20 that faces the carrier portion t3 of the terminal T in the vertical direction protrudes downward to form a holding portion 20b. The lower surface of the braking plate 20 faces the carrier portion t3 of the terminal T. So that they are always spaced upward.
Further, the cam portion 18b of the lever 18 is in contact with the lower surface of the distal end portion 20c on the terminal T side of the brake plate 20, and the brake plate 20 is lifted and the brake plate 20 is lowered. The braking state can be easily switched by the swinging operation of the lever 18.

Further, the bolt 15 passing vertically through the brake plate 20 in the vicinity of the support portion 20a passes through the terminal guide rail 2 and extends downward, and the wing nut 16 is screwed to the lower end thereof so that the terminal guide is engaged. A plurality of disc springs 17 are held between the rails 2.
As a result, the spring force of the disc spring 17 pulls the bolt 15 downward, so that the brake plate 20 swings downward with the support portion 20a as a fulcrum, and the ball (rolling element) 22 described below is moved to the carrier portion of the terminal T. It can be pressed against the surface of t3.
In other words, the bolt 15, the wing nut 16, and the disc spring 17 constitute a pressing means for pressing the ball 22 against the surface of the carrier part t3.

The mounting portion 20b of the brake plate 20 is provided with four mounting holes 20d extending in the vertical direction toward the surface of the carrier portion t3 of the chain terminal T so as to be aligned in the front-rear direction along the carrier portion t3. Yes.
And the internal thread of these attachment holes 20d is provided with the internal thread screwed together with the external thread provided in the outer peripheral surface of the cylindrical casing 21 described below.
Thereby, each cylindrical casing 21 can be easily mounted in each mounting hole 20d, and the vertical position of each cylindrical casing 21 with respect to the brake plate 20 can be easily adjusted by adjusting the screwing amount. Can do.

Inside the cylindrical casing 21, a ball 22 and a coil spring (biasing means) 23 are accommodated.
The ball 22 is always urged by the coil spring 23 toward the surface of the carrier part t3, but the tip opening of the cylindrical casing 21 is formed in a tapered shape so that it does not fall off the cylindrical casing 21. Absent.
Further, the coil spring 23 is in contact with the surface of the ball 22 and also serves as a friction engagement means for preventing the rotation and braking when the ball 22 rolls and rotates on the surface of the carrier portion t3. .
Further, the inner peripheral surface of the cylindrical casing 20, particularly the inner peripheral surface of the tapered portion provided at the tip opening thereof, also frictionally slides on the surface of the ball 22, and friction engagement means for preventing the rotation and braking. Is configured.

That is, the chain terminal feed braking mechanism of the first embodiment does not slide on the surface of the carrier portion t3 of the chain terminal T like the conventional brake plate 14 shown in FIG. Since the ball 22 is configured to roll on the surface of the carrier portion t3, the plating applied to the surface of the carrier portion t3 is not worn and separated into fine particles. There is no deposition on the surface.
The ball 22 is braked by the frictional engagement of the ball 22 with the coil spring 23 and the inner peripheral surface of the cylindrical casing 21, and the ball 22 is held by the spring force of the disc spring 17 and the spring force of the coil spring 23. Since the structure presses against the surface of the portion t3 (arrow B), the feeding of the chain terminal T can be reliably braked.

Further, even if a part of the plating is separated into fine particles and adheres to the surface of the ball 22, the fine particles are separated from the surface by frictional engagement between the ball 22 and the coil spring 23 and the inner peripheral surface of the cylindrical casing 21. Since the particles are removed, the fine particles do not accumulate on the surface of the ball 22 and damage the surface of the carrier portion t3.
Therefore, the fine particles deposited on the surface of the ball 22 do not damage the surface of the carrier part t3 and generate lint-like cutting waste, thereby preventing the various problems described above.

  Further, since the four balls 22 are arranged in parallel in the feeding direction (arrow A) of the chain terminal T, even if one of them enters the engagement hole t4 penetrating the carrier portion t3, the remaining ball 22 The three balls 22 roll on the surface of the carrier part t3, and a necessary and sufficient braking force can be ensured to brake and temporarily stop the feeding of the chain terminal T.

Further, each ball 22 is held inside and away from the surface of the carrier portion t3 inside each cylindrical casing 21, and is urged toward the surface of the carrier portion t3 by a coil spring 23. Therefore, the ball 22 can easily follow the step between the engagement hole t4 of the carrier part t3 and the general part.
Thereby, the braking plate 20 is lifted by an impact when each ball 22 gets over the step of the engagement hole t4, and the braking effect due to the contact between the carrier portion t3 and each ball 22 is not lost.
Even if the distance between the surface of the carrier part t3 and the brake plate 20 changes, the ball 22 can be displaced in the vertical direction to absorb the change in the distance, so that the ball 22 can be securely attached to the terminal surface. The feeding of the chained terminal T can be braked by contacting the terminal.

  One of the four balls 22 engages with the outer surface when entering the inside of the engagement hole t4 penetrating the carrier portion t3 and coming into contact with the surface of the terminal guide rail 2. The position in the front-rear direction is such that the chained terminal T engaged with the rear edge t5 of the hole t4 and intermittently fed forward can be temporarily stopped while being positioned at a predetermined position in the front-rear direction. Can also be determined.

  Alternatively, when one of the four balls 22 enters the inside of the engagement hole t4 penetrating through the carrier portion t3 and comes into contact with the surface of the terminal guide rail 2, its outer surface is engaged. While engaging the rear edge t5 and the front edge t6 of the hole t4, the terminal that is intermittently fed and advanced or pulled back by the terminal winding roller is positioned more accurately in a predetermined position in the front-rear direction. The outer shape and the position in the front-rear direction can also be determined so that the temporary stop can be performed more reliably.

Second Embodiment Next, with reference to FIG. 5, a feeding brake mechanism for a chain terminal according to a second embodiment will be described.

Unlike the brake plate 20 described above, the brake plate 30 in the second embodiment can be fixed to the terminal guide rail 2 so as not to be relatively displaceable in the front, rear, up, down, left and right directions. The wing nut 16 and the disc spring 17 are not provided.
Further, the holding portion 31 of the brake plate 30 is provided with a mounting hole 32 extending in the vertical direction toward the surface of the carrier portion t3 of the chain terminal T.
Then, a drop-off preventing member 33 is attached to the lower end of the mounting hole 32 to prevent the ball (rolling element) 34 from dropping off.
Further, a friction engagement member 35 made of a polymer material, a coil spring (pressing means) 36, and a circlip 37 are provided above the ball 34, and the spring force of the coil spring 36 causes the friction engagement member 35 to pass through. The ball 34 is pressed against the surface of the carrier part t3.

That is, in the second embodiment, the chain terminal feeding and braking mechanism fixes the brake plate 30 in a stationary state, and the coil spring 36 held by the brake plate 20 urges the ball 34 to carry the carrier portion. This structure is pressed against the surface of t3.
As a result, the braking plate 30 is lifted by an impact when the ball 34 goes over the step of the engagement hole t4, and the braking effect is not impaired because the contact between the carrier portion t3 and the ball 34 is lost.
In addition, by appropriately selecting the polymer material forming the friction engagement member 35, when a situation occurs in which fine particles of the plating adhere to the surface of the ball 34, the fine particles are caused to adhere to the friction engagement member 35. It can also be removed by entanglement.
Further, since the conventional braking mechanism described above and the feed braking mechanism of the first embodiment described above are not the structure using the pressing means including the bolt 15, the wing nut 16, and the disc spring 17, the other structure The feed braking mechanism of the second embodiment can also be applied to the terminal crimping terminal.

Third Embodiment Next, with reference to FIG. 6, a feed brake mechanism for a chain terminal according to a third embodiment will be described.

  The brake plate 40 in the third embodiment is the same as the brake plate 20 described above, and the holding portion 41 is connected to the carrier of the chain terminal T by the pressing means composed of the bolt 15, the wing nut 16 and the disc spring 17. The structure is biased toward the surface of the portion t3.

The holding portion 41 of the brake plate 40 is provided with a mounting hole 42 extending in the vertical direction toward the surface of the carrier portion t3 of the chain terminal T.
A drop prevention member 43 is attached to the lower end of the attachment hole 42 to prevent the ball (rolling element) 44 from falling off.
Further, a friction engagement member 45 made of a polymer material is stacked above the ball 44 and is prevented from coming off by a circlip 46.
As a result, the ball 44 is pressed against the surface of the carrier portion t3 by pressing means including the bolt 15, the wing nut 16, and the disc spring 17 (not shown).

That is, the chain terminal feeding and braking mechanism in the third embodiment is such that the brake plate (holding means) 40 and the ball (rolling element) 44 are integrally displaced in the vertical direction, and the bolt 15 and the wing nut (not shown). 16. Wearing the plating on the surface of the carrier part t3 while having a very simple structure of pressing the ball 44 against the surface of the carrier part t3 by urging the brake plate 40 downward using the disc spring 17 Thus, it is possible to obtain an excellent effect that the feeding of the chain terminal T can be reliably braked.
Note that the ball 44 can be urged toward the surface of the carrier part t3 by the friction engagement member 45 by selecting a polymer material forming the friction engagement member 45.

Fourth Embodiment Next, with reference to FIG. 7 and FIG. 8, a feed braking mechanism for chained terminals according to a fourth embodiment will be described.

The brake plate 50 in the fourth embodiment is fixed in a state where it is stationary relative to the terminal guide rail 2 so that it cannot be displaced relative to the terminal guide rail 2 in the same manner as the brake plate 30 described above. Nut 16 and disc spring 17 are not provided.
Further, in the holding portion 51 of the brake plate 50, three attachment holes 52 extending in the vertical direction toward the surface of the carrier portion t3 of the chain terminal T are arranged in the front-rear direction along the carrier portion t3 of the terminal T. It is so penetrated.

A drop-off prevention member (not shown) is attached to the lower end of each mounting hole 52 to prevent the cylindrical roller (rolling element) 53 from dropping off.
Further, a friction engagement member 54 made of a polymer material, a coil spring (pressing means) 55 and a circlip 56 are provided above the roller 53, and the spring force of the coil spring 55 causes the friction engagement member 54 to pass through. The roller 53 is pressed against the surface of the carrier part t3.
At this time, since the opening at the lower end of the friction engagement member 54 is formed in a tapered shape, the roller 53 does not fall off the holding portion 51.
Further, since the dimension of the roller 53 in the axial direction (left-right direction) is substantially the same as the width of the carrier portion t3 of the terminal T and is larger than that of the engagement hole t4, the roller 53 does not enter the engagement hole t4. Absent.

That is, in the chain terminal feeding and braking mechanism of the fourth embodiment, the surface of the carrier portion t3 and the cylindrical surface of the roller 53 are in line contact with each other, which is compared with the case where a ball is used as the rolling element. Thus, the contact surface pressure between them can be reduced.
Thus, when the roller 53 rolls on the surface of the carrier part t3, it is possible to reliably prevent the plating on the surface of the carrier part t3 from being worn away and separated into fine particles.
Therefore, fine particles accumulate on the surface of the roller 53 and damage the surface of the carrier portion t3, thereby generating lint-like cutting waste and not causing the above-described problems.
Further, since the three rollers 53 arranged in the front-rear direction roll on the surface of the carrier part t3, it is possible to secure a necessary and sufficient braking force for braking and temporarily stopping the feeding of the chain terminal T. it can.

As mentioned above, although each embodiment of the feed brake mechanism for chained terminals according to the present invention has been described in detail, it is needless to say that the present invention is not limited to the above-described embodiments, and various modifications are possible. .
For example, also in the second and third embodiments described above, a plurality of balls 34 and 44 can be arranged in parallel in the feeding direction of the chain terminal T, as in the first embodiment.
Furthermore, it goes without saying that the present invention can also be applied to a feed braking mechanism having a structure described in Patent Document 2 without using a braking plate as in the above-described embodiments.
In addition, the roller in the fourth embodiment can be changed so as to enter the inside of the engagement hole penetrating through the carrier portion so that the same effect as the ball in the first embodiment can be obtained.

The side view of the terminal crimping apparatus provided with the terminal braking mechanism of 1st Embodiment. The perspective view which shows the terminal braking mechanism of 1st Embodiment. FIG. 3 is a main part sectional view of the terminal braking mechanism shown in FIG. 2. FIG. 4 is a cross-sectional view taken along the IV-IV break line in FIG. 3. Sectional drawing which shows the terminal braking mechanism of 2nd Embodiment. Sectional drawing which shows the terminal braking mechanism of 3rd Embodiment. Sectional drawing which shows the terminal braking mechanism of 4th Embodiment. Sectional drawing along the VIII-VIII fracture line in FIG. The front view of the terminal crimping | compression-bonding apparatus currently disclosed by Japanese Utility Model Publication No. 7-27591. The side view of the terminal crimping apparatus shown in FIG. The perspective view which shows the braking mechanism in the terminal crimping apparatus shown in FIG.

Explanation of symbols

T chained terminal t3 carrier part t4 engagement hole t5 rear edge t6 front edge 1 base frame 2 terminal guide rail 12 feed claw 14 brake plate 14b sliding part 15 bolt 16 wing nut 17 disc spring (pressing means)
20 Brake plate (holding means)
21 Cylindrical casing 22 Ball 23 Coil spring (friction engagement member)
30 Brake plate (holding means)
31 Holding part 32 Mounting hole 34 Ball 35 Friction engagement member 36 Coil spring (pressing means)
40 Brake plate (holding means)
41 Holding part 42 Mounting hole 44 Ball (rolling element)
45 Friction engagement member 50 Brake plate (holding means)
53 Roller (rolling element)
54 Friction engagement member 100 Terminal crimping machine provided with feeding brake mechanism of first embodiment

Claims (10)

A braking mechanism for braking the feeding of the chain terminal,
Rolling elements that roll on the surface of the chain terminal;
Friction engagement means for friction engagement with the rolling elements;
Holding means for holding the rolling elements and the friction engagement means;
Pressing means for pressing the rolling elements against the surface of the chain terminal;
A chain terminal feeding and braking mechanism comprising: The pressing means is configured to urge the holding means toward the surface,
The rolling element is held by the holding means so as to be able to contact with and separate from the surface;
2. The chain terminal feeding and braking mechanism according to claim 1, further comprising biasing means held by the holding means for biasing the rolling elements toward the surface. The holding means is fixed in a stationary state;
The rolling element is held by the holding means so as to be able to contact with and separate from the surface;
2. The feeding brake for a chain terminal according to claim 1, wherein the pressing means is configured to be held by the holding means and urge the rolling elements toward the surface. mechanism. The pressing means is configured to urge the holding means toward the surface of the chain terminal,
2. The chain terminal feeding and braking mechanism according to claim 1, wherein the rolling elements are held so as to be displaced integrally with the holding means. The rolling element is accommodated in a cylindrical casing having a male screw threaded on its outer peripheral surface so as to be displaceable in the axial direction thereof,
The biasing means is housed in the cylindrical casing and configured to bias the rolling element toward the surface;
The feeding of the chain-shaped terminal according to claim 2, wherein the holding means has a mounting hole extending toward the surface, which has a female screw threadedly engaged with a male screw of the cylindrical casing. Braking mechanism.   6. The chain terminal feeding and braking mechanism according to claim 1, wherein the plurality of rolling elements are arranged in parallel in the feeding direction of the chain terminal. An engagement hole for feeding a terminal is provided in the carrier portion of the chain terminal,
The position of the rolling direction is defined so that the rolling element may be engaged with a rear edge of the engagement hole in a terminal feeding direction to temporarily stop the chained terminal. A feed braking mechanism for a chain terminal according to any one of 1 to 6. An engagement hole for feeding a terminal is provided in the carrier portion of the chain terminal,
The rolling element has an outer shape and a position in the front-rear direction that are engaged with a rear edge and a front edge of the engagement hole in a terminal feeding direction to temporarily stop the chained terminal. A feed braking mechanism for a chain terminal according to any one of claims 1 to 6.   9. The chain terminal feeding and braking mechanism according to claim 1, wherein the rolling elements are spherical.   9. The chain terminal feeding and braking mechanism according to claim 1, wherein the rolling elements are cylindrical.

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