JP3021456B2 - Parts supply device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a component feeder having a tapered upper rail surface for guiding a screw of a rail member, and a rail member for guiding a screw according to the outer diameter of the screw to be supplied. The present invention relates to a component supply device provided with a rail interval adjustment mechanism for adjusting an interval between inner wall surfaces.

[0002]

2. Description of the Related Art As shown in FIG. 8, a conventional component supply apparatus has a rail having a pair of rail members disposed in parallel with their inner wall surfaces facing each other at a larger interval than an outer peripheral thread portion of a screw N to be supplied. The upper rail surface S for guiding the screw N of the device R was formed horizontally.

[0003] Further, as shown in FIG. 8, a conventional component supply device uses a dedicated rail device R for each outer diameter of a screw N to be supplied.
Is prepared in advance, and every time the external dimensions of the screw N to be supplied change, the entire rail device R fixed to the bracket B fixed to the frame F is replaced.

Further, as shown in FIG. 9, the conventional component feeder receives a screw N supplied by a rail member and has an upper end near a bottom B of a cutout K into which the supplied screw N is inserted. The part was formed by a right-angled end face.

[0005]

In the conventional parts supply device, the upper rail surface for guiding the screws of the pair of rail members is formed horizontally, so that the upper rail surface and the lower end of the head of the screw to be supplied are provided. Or because the lower end of the washer attached to it makes surface contact, the contact area is large and the resistance is large, and it is not possible to supply the screw stably,
There is a problem that the rail surface is affected by dirt.

In addition, in the conventional component supply device, every time the external dimensions of a screw to be supplied change, it is necessary to replace the rail device with a dedicated rail device for each dimension. Since it is necessary to prepare a dedicated rail device for each outer diameter dimension of N in advance, there is a problem that the cost is increased.

Further, in the conventional component supply device, since the upper end near the bottom of the notch portion into which the supplied screw of the screw catcher is inserted is formed by a right-angled end face, the right angle of the notch portion is formed. The upper end face is engaged with the lower end of the head of the screw N or the lower end of the washer guided obliquely by an inclined portion corresponding to the inclination of the rail member,
There is a problem that the screw cannot be tightened because the screw does not become vertical.

Therefore, the inventors of the present invention provide a tapered upper rail surface for guiding the screws of a pair of rail members disposed in parallel with the inner wall surface facing at an interval larger than the outer thread portion of the screw to be supplied. Focusing on the first technical idea of the present invention, which realizes a point or linear contact with the lower surface of a washer attached to the lower part of the head of the screw to be screwed, the rail member according to the outer diameter dimension of the screw to be supplied. The present invention focuses on the second technical idea of the present invention that adjusts the facing distance between the inner wall surfaces, and chamfers the upper end near the bottom of the cutout in which the supplied screw of the screw catcher is inserted. Focusing on the third technical idea of the invention, and further research and development, reduce the contact area between the screw and the rail surface to enable stable supply of the screw, and to save time when the external dimensions of the supplied screw are changed. Reduce Lower the monitor costs, we have reached the present invention to achieve the object of preventing engagement with the notch perpendicular upper surface and the head lower portion of the screw, which is guided obliquely or lower end of the washer.

[0009]

According to a first aspect of the present invention, there is provided a component supply apparatus in which an inner wall surface is opposed to an outer peripheral thread portion of a screw supplied from a hopper for storing the screw at a larger interval. A pair of rail members arranged in parallel to each other, the upper rail surfaces for guiding the screws are opposed to each other.
The maximum height of the inner wall is
Guide with linear contact with the lower surface of the screw head
It is configured as follows.

According to a second aspect of the present invention, there is provided a component supply apparatus according to the first aspect, wherein the interval between the inner wall surfaces of the rail member is set in accordance with the outer diameter of a screw to be supplied. It has a rail spacing adjustment mechanism for adjustment.

According to a third aspect of the present invention, in the first aspect of the present invention, the component supply device is provided so as to face a lower end of the inclined rail member, The rail section for receiving the screw supplied by
The screw catcher provided with an inclined portion having the same inclination as that of the material has a chamfered upper end near the bottom of the cutout into which the supplied screw is inserted.

[0012]

According to the first aspect of the present invention, there is provided a component supply apparatus comprising:
The height of the upper rail surface of the pair of rail members arranged in parallel with the inner wall surfaces facing each other at a larger interval than the outer thread portion of the screw to be supplied has the maximum height at the opposed inner wall surfaces.
It is configured to be attached to the lower part of the head of the screw
Guide it in linear contact with the underside of the washer and remove the screw.
It is a stable guide.

[0013] In the component supply apparatus of the second invention having the above-described configuration, the interval between the inner wall surfaces of the rail member is adjusted and adjusted by the rail interval adjusting mechanism according to the outer diameter of the screw to be supplied. Screws having different outer diameters are supplied by the rail members at the opposed intervals.

According to a third aspect of the present invention, there is provided a component supply apparatus according to the third aspect of the present invention, wherein the screw supplied by the inclined rail member is provided on the inclined portion of the screw catcher disposed opposite the lower end thereof. The cutout is formed in the vertical direction without being engaged with the chamfered upper end near the bottom of the cutout.

[0015]

[Effect of the Invention] component supply device of the first invention to achieve the above-described action, to the opposite front SL upper rail surface of the rail member
Screw with the maximum height on the inner wall
In linear contact with the underside of the washer attached to the lower part of the head
The above-mentioned guide is realized, so that the screw can be stably supplied and the effect of preventing the rail surface from being affected by dirt is exerted.

In the component supply apparatus according to the second aspect of the present invention, the opposing distance between the inner wall surfaces of the rail member is adjusted by the rail distance adjusting mechanism according to the outer diameter of the screw to be supplied. Since it is not necessary to replace the entire rail device unlike the device, it is possible to reduce the labor and the number of parts when the external dimensions of the supplied screws are changed, and to reduce the cost of the entire rail device to be prepared.

According to a third aspect of the present invention, the screw supplied by the rail member which is disposed at an angle is provided near the bottom of the notch of the screw catcher via the inclined portion . Since it is inserted smoothly without being engaged with the chamfered upper end portion and is inserted vertically, there is an effect that the next screw can be securely tightened.

[0018]

Embodiments of the present invention will be described below with reference to the drawings.

(First Embodiment) As shown in FIGS. 1 to 6, a component supply apparatus according to a first embodiment includes a hopper 1 for storing a screw N to be supplied, and a rocker after locking the screw in the hopper 1. The hopper track 2 which supplies the screw N by moving, a tapered surface 31 formed on the upper rail surface of a pair of rail members 30 arranged in parallel with inclination and having a height decreasing toward the outside, and a frame F A rail gap adjusting mechanism 34 for fixing to the fixed bracket 32 with a bolt via a spacer 33 corresponding to the outer diameter of the screw N to be supplied to form a larger gap than the outer thread of the screw N to be supplied; And a guide mechanism 3 for supplying a screw provided with.

The hopper 1 is composed of a semicircular case member 10 having a rectangular maximum opening at the top as shown in FIG.

The hopper track 2 is composed of a fan-shaped member 20, as shown in FIG. 3, and has a linear locking groove 21 formed on the upper portion thereof. Then, it is configured to be able to supply the guided screw 3 to the guide mechanism 3 by oscillating and tilting, and picking up the screw N.

In the guide mechanism 3, as shown in FIGS. 1 and 2, the upper rail surfaces of a pair of rail members 30, which are arranged in parallel with the rectangular members facing each other, increase in height linearly from the outer wall surface. Then, the inner wall surface is formed on the tapered surface 31 having the maximum height.

As shown in FIGS. 1 and 2, the rail member 30 located downstream from the lower end of the rail member 30 by a predetermined distance from the lower end of the rail member 30 and from the single feed mechanism 35 of the screw N.
By forming the portion on the tapered surface 31, the required minimum action can be realized.

The single feed mechanism 35 is configured such that the claw members 351 and 352 opposed by the twin rod cylinder 350 reciprocate up and down in FIG.
, And the screws N continuously supplied can be supplied downstream one by one.

As shown in FIGS. 1 to 5, the rail spacing adjusting mechanism 34 has a thickness corresponding to the outer diameter of a screw N which the pair of rail members 30 supplies to the bracket 32 fixed to the frame F. It is configured such that an opposing interval larger than the dimension of the outer peripheral thread portion of the screw N to be supplied is formed by fixing with a bolt via a spacer 33 having a thickness.

That is, as shown in FIGS. 1 and 2, the spacers 33 having different thicknesses are interposed between the bracket 32 and the rail member 30 so that the bracket 32 and the rail member 30 can be connected to each other. By changing the distance relationship, the distance between the inner wall surfaces of the pair of rail members 30 according to the outer diameter of the screw N to be supplied can be realized.

On the upper part of the opposite rail member 30, a screw N is supplied as shown in FIGS. 1, 4 and 5.
A guide rail 301 is provided to regulate the position of the head and prevent the screws N from overlapping.

As shown in FIG. 3, the rail member 30 is disposed so as to face the lower end of the rail member 30 which is disposed obliquely.
Screw catcher 3 arranged below screw tightening mechanism 4
6 is provided with an inclined portion 361 having an inclination similar to that of the rail member 30 for receiving the screw N supplied by the rail member 30 as shown in FIG. 6, and a notch into which the supplied screw N is inserted. A chamfered portion 363 is formed at the upper end near the bottom of the portion 362.

In the component feeder of the first embodiment having the above-described configuration, the screw N previously stored in the hopper 1 is locked in the locking groove 21 by swinging the hopper track 2 counterclockwise. In the groove 35 formed between the inner wall surfaces of the opposed rail members 30, the screws are mounted one by one on the upper rail surface of the opposed rail members 30 of the guide mechanism 3. The screw portion of the screw N is inserted.

When the washer W attached to the lower part of the head of the screw N inserted in the groove 35 is inserted, the washer W is guided downstream by the rail member 30 which is arranged obliquely. The screw is supplied to the screw catcher 36.

At this time, the upper rail surface of the rail member 30 is formed as a tapered surface 31 whose height is increased linearly from the outer wall surface and the height is maximized on the inner wall surface. And the lower surface of the washer W of the screw N mounted on the tapered surface 31 is guided in a line contact state.
When the screw N is guided along the inclined rail member 30, it does not swing.

When the outer diameter of the screw N to be supplied is changed, the rail member 30 is fixed to the bracket 32 via the spacer 33 that matches the outer diameter of the screw N, so that the opposite rail member is provided. An interval corresponding to the outer diameter of the thread portion of the newly changed screw N is formed between the inner wall surfaces of the thread 30.

The screw N supplied to the screw catcher 36 is guided along an inclined portion 361 having the same inclination as that of the rail member 30, and is inclined by a notch formed in the inclined portion 361. The inserted screw N is smoothly guided without being engaged by the chamfered portion 363 formed at the upper end near the bottom of the notch 362, and the screw N is inserted into the bottom of the horizontal notch 362. Inserted vertically.

In the component feeder according to the first embodiment having the above operation, the upper rail surface formed on the tapered surface 31 of the rail member 30 makes contact with the lower surface of the washer mounted below the head of the screw. This realizes a linear contact with small diameter, prevents the screw from oscillating, enables a stable supply, and prevents the rail surface from being affected by dirt. Further, the above effect can be realized by forming the tapered surface 31 at least in a necessary minimum area corresponding to a rail surface downstream of the single feed mechanism 35 for dropping the screw by its own weight.

In the component supply device of the first embodiment, the rail member 30 is fixed to the bracket 32 by the rail interval adjusting mechanism 34 via the spacer 33 corresponding to the outer diameter of the screw to be supplied. Since the interval between the inner wall surfaces of the rail member 30 is adjusted, there is no need to replace the entire rail device unlike the conventional device,
This has the effect of reducing the labor and the number of parts when the external dimensions of the supplied screws are changed, and of lowering the cost of the entire rail device to be prepared.

Further, in the component supply device of the first embodiment, the screw supplied by the rail member 30 which is disposed at an angle is provided at the bottom of the notch 362 of the screw catcher 36 via the inclined portion 361. Since the chamfered portion 363 is formed at the upper end in the vicinity, it is inserted smoothly without engaging with the upper end, and is stably inserted in the vertical state, so that the next screw tightening can be surely performed. It works.

(Second Embodiment) As shown in FIG. 7, the component supply device of the second embodiment uses the rail member 3 of the first embodiment.
The upper rail surface 31 is formed by a tapered surface 311 having a linearly reduced height from the outer wall surface and having a minimum height on the inner wall surface. Is directly fixed to the bracket 32 fixed to the frame F, and is fixed to the bracket by a bolt via a spacer 33 having a thickness corresponding to the outer diameter of the screw N supplied only by the other rail member. Thus, the present embodiment differs from the first embodiment only in that the opposed distance between the rail members 30 is larger than the dimension of the outer peripheral thread of the screw N to be supplied, and the other components have the same configuration. Is omitted.

In the component feeder of the second embodiment having the above-described structure, the upper rail surface of the rail member 30 is linearly reduced in height from the outer wall surface and the height is minimized on the inner wall surface. , The tapered surface 311
One point of the screw N placed on the tapered surface 311 and the lower surface of the washer W is guided in a state of point contact.

When the outer diameter of the screw N to be supplied changes, only the other rail member 30 is opposed to the bracket 32 by fixing the rail member 30 to the bracket 32 via the spacer 33 matching the outer diameter of the screw N. A gap is formed between the rail members 30 between the inner wall surfaces so as to match the outer diameter of the thread portion of the newly changed screw N.

The component feeder according to the second embodiment, which has the above-described operation, is characterized in that the upper rail surface formed on the tapered surface 311 of the rail member 30 makes contact with the lower surface of the washer mounted below the head of the screw. Is achieved, the contact resistance is reduced, the screw N is smoothly supplied, and the rail surface is not affected by dirt.

In the component supply apparatus of the second embodiment, only the other rail member 30 is fixed to the bracket 32 by the rail interval adjusting mechanism 34 via the spacer 33 corresponding to the outer diameter of the screw to be supplied. Thereby, the interval between the inner wall surfaces of the rail member 30 is adjusted, so that it is possible to reduce the trouble when the external dimensions of the screws to be supplied are changed more than in the first embodiment, and to reduce the cost of the entire rail device to be prepared. This has the effect that it can be lowered.

The above-described embodiments have been described by way of illustration, and the present invention is not limited to these embodiments. Those skilled in the art will recognize from the claims, the detailed description of the invention, and the drawings. Modifications and additions are possible without departing from the technical idea of the present invention.

In each of the above embodiments, an example has been described in which the distance between the opposed rail members is adjusted by inserting a spacer between the bracket and the rail member. However, the present invention is not limited to this. Instead, it is also possible to adopt a mode in which a spacer is provided in advance according to the outer diameter of a screw for supplying a spacer inserted between the inner wall surfaces of the opposed rail members, and the spacer is replaced every time the outer diameter of the screw changes. It is.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a rail member of a guide mechanism of an apparatus according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view showing an arrangement of a rail member of a guide mechanism corresponding to a screw having a large outer diameter in the device of the first embodiment.

FIG. 3 is a side view showing the entire apparatus of the first embodiment.

FIG. 4 is a side view showing a rail member of the guide mechanism of the first embodiment.

FIG. 5 is a plan view showing a rail member of the guide mechanism of the first embodiment.

FIG. 6 is a perspective view showing a screw catcher of the first embodiment.

FIG. 7 is a cross-sectional view showing a rail member of a guide mechanism of the device according to the second embodiment of the present invention.

FIG. 8 is a cross-sectional view showing a rail member of a guide mechanism of a conventional device.

FIG. 9 is a perspective view showing a screw catcher of the conventional device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hopper 2 Hopper track 3 Guide mechanism N screw F frame 30 Rail member 31 Tapered surface 32 Bracket 33 Spacer 34 Rail spacing adjustment mechanism

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Takato Ogushi, 1 Ochiai, Nagahata, Kasuga-cho, Nishi-Kasugai-gun, Aichi Prefecture Inside Toyoda Gosei Co., Ltd. Sho 61-175327 (JP, U) Shokai Sho 61-156233 (JP, U) Shohei Hei 4-67960 (JP, U) Shokai 64-53126 (JP, U) (58) Fields surveyed (Int) .Cl. ⁷ , DB name) B23P 19/06 B25B 23/04 B65G 47/14

Claims (3)

(57) [Claims] 1. A pair of rail members which are arranged in parallel with their inner wall surfaces facing each other at a larger interval than an outer peripheral thread portion of a screw supplied from a hopper for storing the screw, the upper rail surface for guiding the screw is provided. On the opposing inner wall surface
It is configured for maximum height, under the head of the screw
It is configured to guide with linear contact with the surface
Component supply apparatus characterized by there. 2. A component feeder according to claim 1, further comprising a rail interval adjusting mechanism for adjusting an interval between the inner wall surfaces of the rail member facing each other in accordance with an outer diameter of a screw to be supplied. . 3. The rail member according to claim 1, wherein the rail member is provided to face a lower end of the rail member that is provided at an angle, and receives a screw supplied by the rail member. Slope to make
Component supplying device being characterized in that chamfered upper end near the bottom of the notch in which the supplied thread of the screw catcher is interposed with a.