JPH0351076Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a female screw feeding device in a female screw driving machine.

[Conventional technology]

BACKGROUND ART Conventionally, for example, multistage female screws for screwing in dowels of shelf holders have been driven into the surface facing the side panels of furniture.

As shown in Fig. 12, the above-mentioned female screw can be smoothly inserted into the cylinder body 2 with the threaded part 1 on the inner circumference and the hole provided in the side plate at one end of the outer circumference of the cylinder body 2. It is composed of a chamfered part 3 provided to prevent the cylindrical body from coming off, and a cutting annular groove 5 that forms a plurality of harpoon parts 4 for preventing removal on the outer periphery of the cylindrical body 2, and the female threads 6 are arranged in parallel. A large number of chamfered portions 3 are supplied to the hopper of each driving machine so as to be placed in front (facing downward).

[Problem that the invention attempts to solve]

When female screws are automatically fed from the feeder through the chute to the hopper, it is not possible to feed all the female screws with the chamfered part first.
One female screw is supplied to the hopper while manually advancing the chamfered portion.

This posed a problem that required considerable effort.

Furthermore, when driving a large number of female screws into the side plate, a large number of driving machines are lined up, which requires a lot of manpower, leading to an increase in cost.

[Means for solving problems]

In order to solve the above problems, this invention consists of a cylindrical body with a threaded part on the inner periphery, a chamfered part on one end of the outer periphery of this cylindrical body for smooth insertion into the hole, and A female screw consisting of a plurality of annular harpoon parts provided on the outer periphery of the hopper is fed to the hopper so that the chamfered part leads, and the female screw in the hopper is intermittently fed to the driving machine from the lowest position. In a driving machine for driving female screws into holes in furniture parts using the lifting hammer shaft of the driving machine, a recessed groove is used with the high receiving end facing the female screw discharge part of the feeder that stores and feeds the female screws. An inclined chute is provided to roll and transfer the female thread within the chute, and when the chamfered part of the female thread is located on one side of the groove in the middle of this inclined chute, the end face support on the chamfered part side is lost and the female thread falls and is ejected. A sorting opening is provided by leaving one side and part of the bottom of the concave groove, and the return side located above the belt conveyor is exposed to the lower side of the lower discharge end of the inclined chute. From the falling point to the forward return side and the inverted part,
A guide plate is provided along the entire length of the carrier side to guide the transfer of the female screw, and the high end of each hopper is connected in communication with the guide plate located on the carrier side of the belt conveyor.

[Effect]

The female screw fed into the feeder fits between the engaging members of the rotating body and is transported upward, and then falls to the high end of the inclined chute that reaches the highest point and is fitted into the groove, so that the female screw is inserted into the groove. Roll and move inside.

At this time, if the chamfered portion of each female screw is located on one side of the groove, it will fall through the opening, and if it is located on the remaining side of the groove, it will pass through.

The female screws reaching the lower end of the inclined chute fall onto the return side of the belt conveyor and are transported forward.

The female screws transported by the belt conveyor are prevented from falling at the inverted portion and the carrier side portion located below by a guide plate parallel to the belt surface of the belt conveyor, and when the female screws reach each hopper portion, When the screws fall into the hopper and the inside of the hopper is filled, they are sequentially transferred to the end on the carrier side, and the female screws that have fallen are collected and fed into the feeder again.

The lowest female screw in each hopper is dropped into the end of the rotating tube that has been rotated back to the horizontal position, and when the rotating tube has been rotated 90 degrees to the vertical position, it is inserted into each hole of the furniture part. The tips of the two match.

Then, lower the hammer shaft and drive a female screw into the hole.

〔Example〕

In the figure, A is a female screw driven into a hole b of a furniture part B, and this female screw A is connected to a cylinder 2 having a threaded part 1 on the inner periphery as shown in FIG.
It is composed of a chamfered part 3 provided at one end of the outer periphery of the cylinder body 2 for smooth insertion into the hole b, and a cutting annular groove 5 in which harpoon parts 4 for preventing removal are formed in multiple stages on the outer periphery of the cylindrical body 2.

6 is a feeder that supplies the female screw A that has been introduced.

As shown in FIGS. 2 to 4, the feeder 6 has a circular main wall 7 whose center is rotatably supported by a shaft 7', and a direction from the periphery of the main wall 7 to one side of the main wall 7. A drum 9 consisting of a peripheral wall 8 protruding from the outside, a rubber roller 12 whose peripheral edge is partially pressed against the surface of the peripheral wall 8 so as to be attached to the drive shaft 11 of the motor 10 to drive the drum 9, and a rubber roller 12 which is attached to the inner peripheral surface of the peripheral wall 8. Annular groove 1 provided so that the female screw A fits into it
3, and a plurality of female screws A fitted into the annular groove 13 at a predetermined interval in the front and rear of the annular groove 13.
A rod 14 provided to be engaged with and sent upward;
It consists of a hopper 15 provided to allow the female screw A to flow into the lower part of the drum 9, and the female screw A fed into the hopper 15 flows into the drum 9, falls into the annular groove 13, and falls. The female screw A is locked by a rod 14 and moved upward.

Reference numeral 16 designates an inclined chute whose high end faces the female screw A discharge portion of the feeder 6 and rolls and transfers the female screw A that has fallen into the groove 17.

Although the above-mentioned inclined chute 16 has a combination of an inclined part and a vertical part in the illustrated case, it may have only an inclined part.

In addition, a groove 17 is provided in the middle of the inclined chute 16.
When the chamfered part 3 of the female screw A is located on one side of the groove 1, the end face support on the chamfered part 3 side is lost as shown in FIG.
A sorting opening 18 is provided in a portion of one side surface of the container 7 and a portion of the bottom surface thereof. That is, when the remaining end of the female screw A is located on one side of the groove 17, the upper peripheral edge of the end surface of the cylinder 2 is pulled against the upper edge of the opening 18 on one side of the groove 17, as shown in FIG. It used to be able to prevent falling and move by rolling.

Furthermore, the female screw A that has fallen from the opening 18 is guided to the hopper 15 by the chute 19.

The female screw A discharged from the lower end of the inclined chute 16 falls onto the upper return of the belt conveyor 20, and from the falling point covers the entire length of the front return side part, the reversed part and the carrier side part. It is designed to be guided and transported by a guide plate 21.

In addition, on the guide plate 21 located on the carrier side of the belt conveyor 20, a parallel female screw driving machine C is provided.
The upper ends of each hopper 22 are connected in a continuous manner, and the rolling female screw A on the guide plate 21 connects to the hopper 22.
When the upper part is empty, it falls down, and when it is full, it passes and is transferred to the front, and is transferred to the belt conveyor 20.
The female screw A discharged from the carrier side terminal is dropped into a receiving box and then thrown into the hopper 15 again.

The above-mentioned driving machine C is shown in Fig. 1 and Fig. 8.
As shown in Figure 0, a plate-like body 23 that closes the lower end of each hopper 22 is provided so as to be movable forward and backward by a guide member 24, and when this plate-like body 23 is moved forward via an arm 26 by the action of a cylinder 25, first the above-mentioned As shown in FIG. 9, the lowest female screw A falls into the notch 27 of the plate-like body 23, and the cylinder 2
When the plate-shaped body 23 is moved backward through the arm 26 by the action of 5, the lower end of the hopper 22 is closed by the plate-shaped body 23, and the female screw A in the notch 27 is placed in a horizontal position as shown in FIG. The rod 31 falls into the rotating tube 28 from the notch 29 on the upper peripheral surface of the distal end of the rotating tube 28 which has returned to its rotational state, and then the rod 31 is advanced by the action of the cylinder 30 to insert the female thread A into the rotating tube 28.
is pushed in, and after the pushing is completed, the rod 31 is moved back by the action of the cylinder 30.

When the shaft 32 is driven 90° counterclockwise in FIG. 8 to stop the rotating tube 28 in a vertical position, the tip of the rotating tube 28 is aligned directly above each hole b of the component B.

After that, by the action of the cylinder 33, the plate 3
4, the hammer shaft 35 whose upper end is supported by the plate 34 is lowered and fitted into the rotating tube 28, so that the female screw A in the rotating tube 28 is inserted into the hole b by the hammer shaft 35. Driven into it.

When the hammer shaft 35 returns to the upward position, the rotating cylinder 28
rotates back.

In the figure, 36 is a pin that stops the supply of unnecessary female threads A of the hopper 22.

〔effect〕

As described above, according to the female screw feeding device according to this invention, the female screw is fed from the feeder to the inclined chute, and the female screw is rolled and transferred in the groove, and the unevenness of the direction of the female screw is corrected. Since the screws are dropped through the opening and the directionality is aligned, female screws with the same directionality can be automatically supplied to the hopper of the driving machine.

Therefore, the inconvenience of manually supplying each product is eliminated.

Further, since the female screws can be fed along the entire length of the carrier side of the belt conveyor using the belt conveyor and the guide plate, the female screws can be stably supplied to each hopper of a large number of parallel driving machines.

[Brief explanation of drawings]

Figure 1 is a front view of the driving machine according to this invention, Figure 2
The figure is a partially cutaway enlarged front view of the female screw supply device,
The figure is a partially cutaway plan view of the same as above, and Figure 4 is Figure 2
5 is a plan view of the inclined chute, FIG. 6 is a sectional view taken along line Y-Y in FIG. 5, and FIG.
The figures are a sectional view taken along the Z-Z line in FIG. 12 is a perspective view of the parts, and FIG. 12 is a partially cutaway plan view of the female thread. A... Female screw, B... Furniture part, b... Hole, C
...Driver, 1...Thread part, 2...Cylinder body, 3...
Chamfered portion, 4... Harpoon portion, 5... Cutting annular groove, 6...
...Feeder, 7...Main wall, 8...Peripheral wall, 9...
Drum, 10... Motor, 11... Drive shaft, 12... Rubber roller, 13... Annular groove, 14
... Rod, 15 ... Hopper, 16 ... Inclined chute, 17 ... Concave groove, 18 ... Sorting opening, 19 ...
Shoot, 20...Belt conveyor, 21...Guide plate, 22...Hopper.

Claims (1)

[Scope of utility model registration request] A cylindrical body with a threaded part on the inner periphery, a chamfered part on one end of the outer periphery of the cylindrical body to facilitate fitting into the hole, and a plurality of annular harpoon parts provided on the outer periphery of the cylindrical body. The female screw configured with the above is fed to the hopper so that the chamfered part comes first, and the female screw in the hopper is intermittently fed to the driving machine from the lowest position, and then inserted into the hole of the furniture part by the lifting hammer shaft of the driving machine. A female screw driving machine is provided with a high receiving end facing a female screw discharge portion of a feeder that stores and sends out female screws, and an inclined chute that rolls and transfers female screws in a concave groove. In addition, when the chamfered part of the female thread is located on one side of the groove during this inclined chute, the end face support on the chamfered part side is lost and a part of the bottom and one side of the groove is left so that the female screw can fall and be ejected. Furthermore, the return side located above the belt conveyor is exposed to the lower side of the low discharge end of the inclined chute, and the forward return side, the inverted part, and the carrier A female screw driving method characterized in that a guide plate is provided along the entire length of the side for guiding the transfer of the female screw, and the high end of each hopper is connected in a continuous manner to the guide plate located on the carrier side of the belt conveyor. A feeding device for female screws in a threading machine.