JP2836519B2 - Staple separator in staple stocker - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a staple separating device for separating staples stored in a staple stocker one by one from a magazine provided in a nailing machine.

[0002]

2. Description of the Related Art Generally, in an automatic assembling apparatus for assembling a plurality of pieces of wood by nailing and assembling them into a fixed structure, a plurality of nailing machines usually move on a predetermined trajectory and operate at a predetermined position. It is controlled to be. Then, when the number of remaining staples of the nailing machine is reduced, the nailing machine is moved to a staple charger provided at a fixed position of the apparatus, where staples are refilled and loaded.

[0003] As such a staple charger, a large number of staples are stacked in a vertical direction in a stocker with a needle leg facing down, and the lowermost staple is separated from other staples and sequentially nailed. What is sent to the magazine of the machine is known. As the separating device, as shown in FIG. 3 (a), the actuators 21 and 22 by the air cylinder mechanism are installed on the left and right sides of the lowermost portion of the stocker, respectively, in two upper and lower stages. There is known a system in which a lowermost staple 2a is separated from another staple 2 by operating the staple 2 in the reverse direction. In addition, as shown in FIG. 2B, a separating claw 23 swinging in the opposite directions to the left and right is alternately moved into and out of the lowermost stage and the upper staples 2a and 2 in a seesaw manner for separation. It has been known.

[0004] However, in the former method, it is necessary to install as many as four actuators, and it is difficult to organically operate those that operate independently by synchronizing the timing. Further, in the latter method, when the staple has a short staple, arrangement and control are troublesome, and a large stroke is hardly obtained.

[0005]

SUMMARY OF THE INVENTION The object of the present invention is to solve the above-mentioned drawbacks, and in particular, it is possible to easily synchronize the timing of the upper and lower engaging claws, and to smoothly and surely separate the staples regardless of the length of the staple legs. An object of the present invention is to provide an apparatus for separating staples in a staple stocker.

[0006]

In order to achieve the above object, a staple separating device in a staple stocker according to the present invention has a large number of staples stacked vertically in a horizontal direction with a needle leg facing down. First links having engagement claws formed at lower ends thereof capable of engaging with staples in the stocker are swingably disposed outside the side walls facing both ends of the staples of the stocker. Connected to the cylinder device, the engaging claw at the lower end enters or retreats from the inside of the side wall when swinging, so that it protrudes and retracts between the needle legs at both ends of the staple one stage higher than the lowermost stage of the stocker. At the same time, the upper end of an L-shaped second link is pivotally attached to a substantially middle portion of the first link so as to be swingable, and the central portion of the second link is pivotally attached to the side wall. Dowels above And the approach or retreat relative to the inner characterized by being arranged to haunt between Hariashi the ends of the lowermost staple of the stocker.

[0007]

According to the present invention, when the air cylinder devices on both sides of the staple stocker are simultaneously operated,
In synchronization with this, the first links on both sides swing, and when the first link swings, the second link swings simultaneously with the swing. In addition, since the swing directions of the first link and the second link are opposite to each other, the respective engagement claws also move to the opposite sides.

Therefore, when the lowermost staple is supported by the engaging pawl of the second link so as not to drop, the first link swings by operating the air cylinder device to one side. At the same time as the engaging claw at the lower end enters the staple stocker and protrudes between the needle legs at both ends of the staple one stage higher than the lowermost stage, the second link also rotates in the opposite direction, and the engaging claw is Retreat from between the needle legs at both ends of the lowermost staple. In this way, the staples one stage higher than the lowermost stage are supported by the first link, while the staples at the lowermost stage lose support by the second link and are separated from other staples and fall.

When the air cylinder device is operated in the reverse direction from this state, the engaging claws of the first link retract from the staple stocker, and simultaneously the engaging claws of the second link move into the staple stocker. Since the staples advance, the staples one stage higher than the lowermost stage and the staples above the lower stage lose support and fall, and are supported by the second link. Less than,
By repeating this operation, the staples are separated one by one.

Therefore, according to the present invention, the timing of the upper and lower engaging claws can be easily synchronized, and the distance between the upper and lower engaging claws can be reduced by the length of the first link and the second link. Since it can be easily adjusted by changing, the upper and lower engaging claws can easily correspond to the length of the staple, and can be separated smoothly and irrespective of the length of the staple.

[0011]

1 and 2 show a staple separating device in a staple stocker according to the present invention. This separating device is mounted on a part of a staple charger (not shown).

Reference numeral 1 denotes a staple stocker. The upper and lower ends of the staple 1 are open, and a plurality of staples 2 are stored in the inside of the staple in a horizontally stacked state with the needle legs facing downward, and stacked in a vertical direction. The apparatus is configured such that the plurality of staples 2 in the stocker 1 are separated one by one.

An air cylinder device 3 is disposed above the stocker 1 in the vertical direction. These air cylinder devices 3 on both sides are controlled to operate simultaneously.

A mounting piece 4 is formed outside the side wall 1a facing both ends of the staple 2 of the stocker 1, and a Z-shaped first link 6 is provided on a support shaft 5 provided on each mounting piece 4. Is pivotally mounted about a shoulder at the upper end thereof.

The upper end of the first link 6 is connected to the shaft 7 of the rod portion 3a at the lower end of the air cylinder device 3 so as to be swingable back and forth. The engagement claws 8 formed at the lower end of the first link 6 enter or retract with respect to the inside of the side wall 1a at the time of rotation, and the needles at both ends of the staple 2 one step higher than the lowermost step of the stocker 1. It is arranged so that it may appear between the legs.

Next, a second link 10 is connected to a support shaft 9 provided substantially at an intermediate portion of the first link 6.
The second link 10 is formed in an L-shape, and the upper end thereof is the first link.
The link 6 is pivotally mounted on the support shaft 9, and the center of the link 6 is mounted on the support shaft 11 of the mounting piece 4 of the side wall 1 a. Therefore, the second link 10 can swing back and forth around the support shaft 11 at the center. Also, the second link 1
At the lower end of the second link 10, the engaging claw 12 enters or retracts inside the side wall 1a when the second link 10 rotates, so that the lowermost staple 2 of the stocker 1 is moved. Are arranged so as to protrude and retract between the needle legs at both ends.

With the above configuration, the first stocker on both sides of the stocker 1
Simultaneously oscillate, the second links 10 on both sides oscillate synchronously. Moreover, the first link 6
Since the swing directions of the second link 10 and the second link 10 are opposite, the respective engaging claws 8 and 12 also move to the opposite sides.

At the tips of the engaging claws 8 and 12 of the first and second links 10, receiving pieces 13 of the staple 2 are provided.
14 are formed.

Here, the operation of the staple separating device will be described. First, the lowermost staple 2a in the stocker 1 usually has the engaging claw 12 of the second link 10 which has entered the stocker 1. It is supported not to fall by. Here, when the air cylinder device 3 is operated to operate (extend) the rod portion 3a downward, the first link 6 swings about the support shaft 5, so that the engagement claw 8 is located inside the stocker 1. To protrude between the needle legs at both ends of the staple 2b, which is one stage higher than the lowermost stage, to support the staple 2. At the same time, the second link 10 also rotates about the support shaft 11 in conjunction with the swing of the first link 6, and the engaging claw 12 retreats from the stocker 1 and is located at both ends of the lowermost staple 2 a. Retreat from between the needle legs. As a result, the staples 2b one stage higher than the lowermost stage are supported by the first link 6, whereas the staples 2a at the lowermost stage lose their support and are separated from other staples and fall.

In this state, when the rod portion 3a of the air cylinder device 3 is operated upward (reduced), the engaging claw 8 of the first link 6 is retracted from the stocker 1 at the same time as the second. The engaging claw 12 of the link 10 is the stocker 1
Therefore, the staple 2b, which is one stage higher than the lowermost stage, and the staple 2 thereabove lose their support and fall, and are supported by the second link 10. Hereinafter, by repeating this operation, the staples 2 are separated one by one.

Next, a staple supply device is provided below the stocker 1. The supply device includes a receiving groove 15 of the separated staple 2 and a slider 16 sliding along the receiving groove 15.
2, a pressing piece 17 is formed so as to protrude as shown in FIG. Therefore, when the slider 16 is moved after the staple 2 separated by the staple separating device falls onto the receiving groove 15, the pressing piece 17 is engaged with the end of the staple 2, and the staple 2 is moved together with the slider into the receiving groove 1.
5 to the tip side. Therefore, the staples 2 are supplied into the magazine by arranging the rear end of the magazine 19 of the nailing machine 18 at an end of the receiving groove 15 by appropriate means so as to be continuous.

[Brief description of the drawings]

FIG. 1 is a front view of a part of a staple charger including a staple separating device in a stocker according to the present invention.

FIG. 2 is a side view of the staple separating device.

FIGS. 3A and 3B are explanatory diagrams of an example of a conventional staple separating apparatus.

[Explanation of symbols]

 2 Staple 3 Air Cylinder Device 6 First Link 8 Engagement Claw 10 Second Link 12 Engagement Claw

Claims (1)

(57) [Claims] 1. A plurality of staples are stacked horizontally in a vertical state with a needle leg facing down. The staples in the stocker are respectively engaged with the outer ends of the side walls opposed to both ends of the staples at the lower end thereof. A first link formed with a possible engaging claw is swingably disposed, and the first link is connected to the air cylinder device, and the lower end engaging claw enters or enters the inside of the side wall when swinging. The staples are retracted so as to protrude and retract between the needle legs at both ends of the staple one stage higher than the lowermost stage of the stocker, and the upper end of the L-shaped second link is rocked almost at the middle of the first link. The second link is pivotally connected, the center of the second link is pivotally attached to the side wall, and the engaging claw at the lower end is moved in or out of the inside of the side wall, and both ends of the lowermost staple of the stocker are moved. Between the needle legs A staple separating device in a staple stocker.