JPH0314323Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention is a staple pusher drive device of an automatic staple loading device, more specifically, a staple pusher drive device of an automatic staple loading device. In an automatic staple loading device that automatically replenishes and loads staples into a loaded stapler, when the staple loading device automatically replenishes and loads staples into the loaded stapler, the staple pusher provided in the magazine of the stapler is The present invention relates to a pusher drive device for driving a staple to the rear of newly loaded staples in the magazine.

Note that in this specification, a staple refers to a plurality of staples formed as a single unit.

(Prior Art) Conventionally, as an automatic staple loading device, a staple loading device and a tack are provided separately, and the staples are automatically supplied and loaded into the tack positioned at a predetermined position of the staple loading device.
No. 159401 (Unexamined Japanese Patent Publication No. 59-54206)
Something like No. 73901 has been proposed.

By the way, in this type of staple loading device, when automatically replenishing and loading staples into a magazine positioned at a predetermined position, a staple pusher provided in the magazine is moved to the rear of newly loaded staples. For this reason, in the automatic staple loading device described above, as shown in FIG. A retractable engagement claw is provided, and when a new staple is loaded into the magazine, the pusher actuating member is simultaneously moved from the rear of the staple pusher to the front (at this time, the engagement claw engages with the staple pusher). After falling down), it moves backward and engages the staple pusher (the engaging claw does not fall down) to move the staple pusher backward behind the new staple. Thereafter, when the tacker leaves the predetermined position, the engagement between the staple pusher and the engaging claw is disengaged, and the staple pusher engages with the rear end of the staple that is biased forward.

However, in the above-mentioned staple pusher driving method, when the actuating member moves forward, it is necessary to overtake the staple pusher, so the engaging pawl must be configured to be retractable. When engaging with the staple pusher and retracting, a staple detent must be provided to prevent the staples loaded in the magazine from moving back in the opposite loading direction together with the staple pusher, which makes the mechanism complicated. Further, when the staple pusher is disengaged from the engagement pawl, the staple pusher is biased by the spring and engages the rear end of the staple in an impactful manner. For this reason,
There was a risk that the loaded staples would be damaged or deformed, causing the staples to become jammed in the magazine.

(Purpose of the invention) An object of the invention is to provide a pusher drive device for an automatic staple loading device that eliminates the above-mentioned drawbacks, has a simple structure, and can prevent damage to staples, clogging, etc. .

(Means for Achieving the Object) In order to achieve the above object, the pusher drive device of the automatic staple loading device according to the present invention includes a pusher and a staple loading device that are separately provided, and are positioned at a predetermined position of the staple loading device. In an automatic staple loading device that automatically replenishes and loads staples into a loaded stapler, the staple loading device is provided so as to be movable through the stapler, and when moving through the stapler, pushes out the staples stored inside the stapler from the stapler. a staple loading operation member for loading staples into the magazine of the tackifier body positioned in front of the tackler body; a staple pusher slidably provided in the magazine and biased toward the staple ejecting portion of the tackler body; , located in front of the staple pusher,
a pusher actuating member that moves the staple pusher to the rear of the staples loaded by the staple loading actuating member; the staple loading actuating member and the pusher actuating member are each driven by an air cylinder, The cylinders are controlled to be simultaneously driven in opposite directions, and in an initial state, the staple loading actuating member is located outside the stapler, the pusher actuating member is located in front of the staple pusher, and the staple loading actuating member is located in front of the staple pusher. The present invention is characterized in that the air cylinder is controlled so that its speed becomes slow when both actuating members return.

(Operations and Effects of the Invention) Since the present invention is configured as described above, when the staple loading actuating member moves through the stapler from the back to the front, it pushes out the staples in the stapler and positions them at the front of the stapler. Load it into the magazine of the Tatsuka body. Simultaneously with the movement of the staple loading actuating member, the pusher actuating member moves backward from the front of the staple pusher of the magazine in the opposite direction to the moving direction of the actuating member, engages with the staple pusher, and moves the staple pusher into the magazine. Push back. At this time, the staple pusher comes into contact with the staples loaded in the magazine and acts to push the staples back.
Since the staple is pressed in the loading direction by the actuating member, it will not move back.

Next, when the staple loading actuating member moves backward and returns to the initial position after staple loading, the pusher actuating member moves forward at the same time, so that the staple pusher also engages with the rear end of the loaded staple by the biasing means. However, since the staple loading actuating member and the pusher actuating member are operated at a slow speed, the staple pusher gently engages the rear end of the loaded staple.

As mentioned above, since the pusher actuating member is always located in front of the staple pusher, there is no need to provide a retractable engagement pawl as in the prior art. Also, loading the staple by the staple loading actuating member;
Since the movement of the staple pusher by the pusher actuating member proceeds simultaneously, there is no possibility that the staple will be moved back by the staple pusher. Furthermore, since the return operation of the pusher actuating member after staple loading is performed at a slow speed, the staple pusher engages the rear end of the loaded staple loosely, thereby preventing damage or jamming of the loaded staple. There is no fear. Therefore, the practical effect is very large.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

In the figure, numeral 1 indicates tatsuka. This stapler 1 has a magazine 1b that can load the necessary amount of staples in the stapler main body 1a, and its movement is controlled by a sequence program preset in a drive unit provided in an automatic stapler (not shown), such as a work table, etc. A series of driving operations in which a predetermined number of staples are driven into predetermined positions of the material that is sequentially supplied to the automatic driving machine is repeated.When the magazine 1b runs out of staples, the staples fixed to one side of the automatic driving machine are The loading device 2 receives staples.

The magazine 1b has a staple guide 3 and a staple pusher guide 4, and a staple pusher 5 is slidably provided on the staple pusher guide 4. Staple pusher 5
is formed into a unit, and a staple pressing piece 7 is provided inside the left and right side pieces 6a of the unit main body 6 so as to be openable and closable with respect to the sides of the staple guide 3, and is biased toward the closing side by a spring 8.
The engagement piece 9 is formed on the side piece 6a on the side far from the tackifier body 1a, and the detection part 10 is formed on the side piece 6a on the side closer to the tackifier body 1a. It is biased to slide toward. In addition, Tatsuka main body 1a
A staple detector 13 is provided at the same height as the detector 10 at the connecting portion between the magazine 1b and the magazine 1b. Further, a positioning hole 14 is formed in the lower surface of the magazine 1b.

Next, the staple loading device 2 has a storage section that stores a large amount of staples S stacked in multiple stages in the front and back direction, and a stacker 16 that has an opening 15 formed at the front and rear lower ends thereof through which one staple S can pass.
A staple loading actuating member 17 pushes out the staples S housed in the stacker 16 from the stacker 16 and loads them into the magazine 1b of the stapler body 1a, and a pusher actuating member 18 moves the staple pusher 5 of the magazine 1b backward. It consists of

The staple loading actuating member 17 and the pusher actuating member 18 are disposed parallel to each other and facing each other in opposite directions, and are driven by compressed air pressure. It is set in. Note that the pusher operating member 18 is formed to slide along the guide rod 21. Both air cylinders 19, 20 are set to be driven at the same time, so that both actuating members 17, 18 are actuated simultaneously in opposite directions, with the staple loading actuating member 17 at the inlet opening of the stacker 16. The pusher operating member 18 moves through the section 15a toward the outlet opening 15b, moves along the magazine 1b of the stapler 1 at a predetermined position, and engages with the engagement piece 9 of the staple pusher 5 during the movement. Ru. In addition, when the staple loading actuating member 17 and the pusher actuating member 18 return, the speed thereof is set to be slow.

A receiving part 22 for the stacker 1 is formed in front of the outlet opening 15b of the stacker 16 in the loading device 2, and a pin 23 corresponding to the positioning hole 14 of the magazine 1b is formed protruding from the upper end of the receiving part 22. There is. When these pins 23 and positioning holes 14 are engaged, the stacker 1 is positioned at a predetermined position in the loading device 2, and the rear end of the magazine 1b is inserted into the stacker 1.
It is arranged at a position facing the outlet opening 15b of No. 6.

Here, the operation mode of the staple loading device 2 having the above configuration will be explained.

First, when the detection unit 10 of the staple pusher 5 passes the position detector 13 of the stapler body 1a during the driving operation of the stapler 16, it is detected that the remaining amount of staples is low, and then the stapler 1 is driven according to a predetermined sequence program. Statska 1 mentioned above
6 is positioned at a predetermined position.

Next, air cylinders 19 and 20 are simultaneously driven. As a result, the staple loading actuating member 17
and the pusher operating member 18 simultaneously reciprocate in opposite directions.

The staple loading actuating member 17, which was located outside the stacker 16 before operation, is inserted through the inlet opening of the stacker 16 and moves through the stacker 16 while pushing out the lowermost staple S from the outlet opening 15b. Since the magazine 1b of the stapler 1 is arranged ahead of the outlet opening 15b, the extruded staples S are loaded into the guide of the magazine 1b and further pushed into the front of the magazine 1b. at the same time,
The pusher actuating member 18 located in front of the pusher 5 engages with the engagement piece 9 of the staple pusher 5 when moving along the guide rod, causing the staple pusher 5 to resist the spring force of the pusher spring 11. and push it back. When the staple pusher 5 moves along the staple pusher guide 4 in this way,
As described above, the pressing piece 7 intersects with the staple pusher 5 which moves in the opposite direction by the staple loading actuating member 17, engages with the staple S, opens it, and moves further rearward. At this time, since the staple S is pressed by the staple loading actuating member 17, it will not return due to the engagement of the staple pusher 5.

Further, by switching the air cylinders 19 and 20, the staple loading operating member 17 and the pusher operating member 18 return to operate in opposite directions. When the staple loading actuation member 17 moves to the return end and exits from the inlet opening 15a of the stacker 16, the second staple S from the bottom drops to the lowest stage of the stacker 16. Pusher operating member 18
When the staple pusher 5 returns and operates, the staple pusher 5 also slides in the same direction together with the pusher operating member 18 due to the spring force of the pusher spring 11, and its pressing piece 7 engages with the rear end of the staple S loaded in the magazine 1b. When the staple pusher 5 stops,
The pusher actuating member 18 continues to move to the return end. Note that since the speed during the return operation is set slowly, the staple pusher 5 does not engage the staple S in an impactful manner.

As described above, in the staple loading device 2, the pusher operating member 18 is configured to move in the opposite direction simultaneously with the movement of the staple loading operating member 17, so that the staple pusher 5 engages with and pushes the staple S. Even if it acts to return, it will not return because it is pressed in the loading direction by the staple loading operating member 17 at this time.

Next, when both actuating members 17 and 18 return to the operating step after loading, the pusher actuating member 18 moves forward, and the staple pusher 5 also moves forward until it engages with the rear end of the loaded item by the biasing means. ,
Since the staple pusher actuating means 18 and the staple pusher 5 have slow speeds, the staple pusher 5 gently engages the rear end of the load.

As mentioned above, since the pusher operating member 18 is always located in front of the staple pusher 5, there is no need to provide a collapsible engagement claw as in the conventional case. Also,
Since the loading of the staple S by the staple loading actuating member 17 and the movement of the staple pusher 5 by the pusher actuating member 18 proceed simultaneously, there is no fear that the staple S will be moved back by the staple pusher 5. Furthermore, since the return operation of the pusher operating member 18 after loading is performed at a slow speed, the staple pusher 5 engages the rear end of the loaded staple slowly, and the loaded staple S is damaged or jammed. There is no fear.

[Brief explanation of the drawing]

FIG. 1 is a side view showing a staple loading mode of an automatic staple loading device according to the present invention, FIG. 2 is a plan view thereof, and FIG. 3 is a perspective view showing a staple loading mode and a pusher driving mode. Code 1...Tatsuka, 1a...Tatsuka body, 1b
... Magazine, 2 ... Staple loading device, 5 ...
... Pusher, 6 ... Unit main body, 7 ... Pressing piece, 9 ... Engagement piece, 11 ... Pusher spring, 12
... Embossing portion, 15 ... Opening section, 16 ... Stacker, 17 ... Staple loading operation member, 18 ...
Pusher operating member, 19, 20...air cylinder.

Claims (1)

[Scope of Claim for Utility Model Registration] An automatic staple loading device in which a stapler and a staple loading device are provided separately, and the stapler is automatically supplied and loaded into a stapler positioned at a predetermined position of the staple loading device. a staple loading actuating member that is provided so as to be movable through the stacker of the loading device, and that pushes out the staples housed inside the stapler from the stacker and loads them into the magazine of the stapler body positioned in front of the stapler when the stapler is moved through the stacker; A staple pusher is slidably provided in the magazine and biased toward the staple ejecting portion of the stapler body, and an actuation member for loading the staples is located in front of the staple pusher. a pusher actuating member for moving the staples to the rear to be loaded by the stapler; the staple loading actuating member and the pusher actuating member are each driven by an air cylinder;
The air cylinders are controlled to be driven in opposite directions at the same time, and in an initial state, the staple loading actuating member is located outside the stapler, the pusher actuating member is located in front of the staple pusher, and . A pusher drive device for an automatic staple loading device, characterized in that the air cylinder is controlled so that its speed becomes slow when the two operating members return.