JPH0318599B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for tightening a fastener in a booklet, such as a calendar, whose one end is fixed by a fastener.

For a booklet such as a calendar, the tip of the booklet 1 is tightened with a fastener 2 as shown in Figure 1.
As a conventional fastener tightening device of this type, the second
As shown in Figure a, the booklet 1, which has a hook-shaped cross-section fastener 2 attached to its tip, is opened and closed horizontally with respect to the fixed base plate 3. The fastener 2 is located on the inner movable base plate 4. The first press is applied to the hook portion 2A of the fastener 2 by the pressure plate 5, which descends from above on the movable base plate 4, as shown in FIG. Both base plates 3 with base plate 4 open,
The knife 6 is lowered from above to the neck 2B of the fastener 2 supported on the base plate 4, and the neck 2A of the fastener is bent into a V shape between the base plates 3 and 4, and then the movable base plate 4 is moved to the fixed base. There is known a seaming device which performs a second press so as to approach the board 3 and compress the bent portion between the end faces of both the base boards 3 and 4 (Japanese Utility Model Publication No. 52-24019).

Also, as shown in Fig. 3, both base plates 3 shown in Fig. 2
A pair of clamping rollers 7 and 8 are disposed below the clamping rollers 7 and 4, and after the knife 6 descends to bend the clamping tool 2 between the end faces of both base plates 3 and 4, the clamping fixture 2 is held in the clamping position. The booklet 1 is pushed in from above so as to be inserted between the clamping rollers 7 and 8, and the clamping rollers 7 and 8 perform a second pressing of the fastener neck 2B, and the rollers also press the booklet 1 into the machine. There is also a known device that allows for discharge to the outside (Special Publication No. 54-39771).

As can be understood from the above-mentioned conventional example, in the conventional device of this type, the tightening as the second press on the neck portion 2B of the fastener is performed between the end surfaces of both base plates 3 and 4 as in the device shown in FIG. This is carried out by clamping by closing and closing them, or by clamping by passing between rotating clamping rollers 7 and 8 as in the apparatus shown in FIG.

What these devices have in common is that in all of them, the second press against the neck portion 2B of the fastener is performed by the surface contact pressure of the left and right pressure bodies.

By the way, when the second press on the fastener neck 2B is performed by surface contact pressure between the left and right pressurizing bodies, both of the above-mentioned means have the following problems. That is, when the neck part 2B of the fastener is clamped between the end faces of both base plates 3 and 4 as in the apparatus shown in FIG. The process of crushing the booklet temporarily interrupts the process of transporting the booklet, which has the disadvantage that the device is not efficient. In addition, when the fastener neck 2B is passed between the rotating nipping rollers 7 and 8 as in the device shown in FIG. In reality, unless a gap is provided between both rollers 7 and 8, the fastener 2 cannot pass smoothly between the rollers, so the surface contact pressure of both rollers against the fastener 2 is weak, and the fastener 2 is The disadvantage is that reliable clamping pressure cannot be expected. Furthermore, in the case of this roller clamping, it is necessary that both rollers 7 and 8 are in close contact with each other so that the booklet 1 can be ejected and fed, and that the bent part of the neck part 2B of the fastener is not yet completely crushed. Due to the large curved surface, the neck of the fastener 2B
Before the booklet is completely caught between the two rollers, it slips on the valley between the two rollers and spins idly.If the booklet 1 is simply fed in from above, the fastener part is not easily caught between the rollers. No,
If the rollers are pushed in forcibly, the pressure applied to the fasteners 2 of both rollers is applied while rotating, which may cause the coating on the fasteners 2 to peel off due to slipping, making it difficult to perform continuous seaming. There are drawbacks.

The present invention solves the above-mentioned problems of the conventional fastener tightening means, does not produce any noise during tightening, operates quietly, and provides reliable winding with sufficient tightening force. The object of the present invention is to provide a method and device for tightening a fastener, which can be expected to have a tightening effect and can be expected to be significantly faster in terms of work efficiency than conventional means.

The tightening means for a fastener according to the present invention includes a pair of rocking plates arranged on the same plane with a small gap between them, whose opposing inner sides swing in the vertical direction with their respective outer sides as centers. When both rocking plates are on the same plane, a first press is applied to the fastener on one rocking plate, and then both rocking plates are pushed upward to create a space between the two plates. With the gap open, the fastener that has been subjected to the first press is pushed into the gap between the two plates with a knife, and from this state both the swing plates rotate downward, so that the two swing plates face each other. The second press of the neck of the fastener and the ejection of the booklet from the machine can be performed by the inner end press surface of the press.

Next, the present invention will be explained with reference to the embodiments shown in Fig. 4 and below. Fig. 4 is a sectional view showing the configuration of the seaming device according to the present invention, and Fig. 5 is a sectional view showing the part shown in Fig. 4 outside the machine frame. FIG.

As shown in FIG. 4, this device includes a pair of rocking plates 10 arranged so that a minute gap 13 is separated between opposing inner sides 10a on the same plane, and a fastener 12. In order to perform the first press, a pressure plate 14 disposed above these swing plates 10 and a fastener 12 are also attached to the inner sides of both swing plates.
A knife 15 is arranged above both rocking plates 10 for pushing into the gap 13 of 0a.

The swing plate 10 has both ends of each outer side 10b pivoted to the machine frame 16 shown in FIG. The ends of the pivoted links 18 are connected to one guide base 19 via arms 20, and the lower ends of rods 21 connected to the lower ends of the guide bases 19 are connected to drive shafts supported within the machine frame 16. 22, and as the drive shaft 22 rotates, the press surfaces 10a of the inner sides of both rocking plates move vertically around the outer sides 10b. It is designed to move back and forth.

Further, the pivot end 17 of the outer side 10b of both rocking plates is attached to a cam 24 pivoted to the machine frame 16, as shown in FIG.
The tips of the arms 25 connected to the respective cams 24 are screwed into a common screw rod 26, and by rotating the screw rod 26, the respective shaft support ends 17 are rotated. Center P1 is the center of cam 24
By rotating around P2, the distance between the minute gaps 13 between the inner sides 10a of both rocking plates can be adjusted.

On both the swing plates 10, there is a fastener 12 having a hook-shaped cross section at the tip from the front direction of the device (right side in FIG. 4).
A stopper 27 is provided on the upper surface of one of the swing plates 10 at the inner depth in the transport direction, so that the booklet 11 with the attached booklet 11 is fed across the gap 13. The fastener 12 of the booklet 11 is stopped at a predetermined position.

Further, above the swing plate 10 with a stopper, there is a pressure plate 14 for crushing the fastener 12 of the booklet sent in as a first press on the swing plate 10.
is provided so that it can move up and down. Further, above the minute gap 13 between both rocking plates, there is a knife 15 for inserting the fastener 12 into the gap 13.
is provided so as to be vertically movable parallel to the pressure plate 14.

As shown in FIG. 4, the pressure plate 14 and knife 1
5, the upper ends of rods 28 and 29 are connected, respectively, and the lower end of the pressure plate rod 28 is provided so as to be pivotally supported around the cam 30 on the drive shaft 22 via a pin 32. A knife actuating arm 3 is connected to the pressure plate actuating arm 31, and the lower end of the knife rod 29 is also pivotally supported around the cam 30 via a pin 34.
The rods 28, 29 are connected to
The pressure plate 14 and the knife 15 are configured to move up and down via the pressure plate 14 and the knife 15.

A booklet 1 with a fastener 12 having a hook 2A at the tip is attached to the front part of the device (right side in Fig. 4).
A book feeding section 35 for feeding books 1 toward both swing plates 10 is provided. This book Children's Fee Department 35
are the feed rollers 36 and 37 of the booklet 11, and the booklet 11.
hook-shaped stopper 39 for temporarily waiting
and a pedestal 40 located behind the hook-shaped stopper and pivoted in the vertical direction by a shaft 41 to lift the fastener 12 from the bottom to the top. When the pedestal 40 is positioned below as indicated by the dotted line, the fasteners 12 are fed one by one from a fastener supply device 42 attached to the side of the apparatus as shown in FIG.
As this fastener supply device 42,
The structure shown in No. 1999 and Utility Model Publication No. 58-30704 is used.

Further, below both the swing plates 10, feed rollers 43 and 44 are arranged for discharging the booklet 11 that has been tightened to the outside of the machine.

A signal is issued after the booklet 11 is sent from outside the machine onto the booklet feeding section 35 and temporarily stopped by the hook-shaped stopper 39, and after waiting for the end of the tightening process of the preceding booklet by both swing plates 10. stopper 3
9 is removed, and the booklet 11 is sent toward the swing plate 10 by the rotation of the feed rollers 36 and 37, with the fastener 12 hooked to the tip.

As shown in FIG. 7a, the booklet 11 fed in the direction of the rocking plate 10 is moved so that the fastener 12 crosses the gap 13 between the two rocking plates on the same plane and passes through the inner rocking plate. It stops at a predetermined position where it hits the stopper 27 at 10. At this time, the cam 30 on the drive shaft 22 comes into contact with the tip of the pressure plate actuating arm 31 and pulls the pressure plate rod 28, so the pressure plate 14 is lowered and the hook portion 12 of the fastener 12 is moved as a first press.
Crush A.

From that stage, due to the movement of the grooved cam 23 at the outer end of the drive shaft 22 shown in FIG. 5, both swing plates 10 are pushed upward as shown in FIG. 7b, and the gap 13 is opened. The pressure plate 14 escapes upward as the cam 30 on the drive shaft 22 in FIG. 7b disengages from the tip of the pressure plate operating arm 31 and the pressure plate rod 28 rises. Subsequently, the same cam 30 comes into contact with the tip of the knife actuating arm 33 and pulls the knife rod 29, so that the knife 15 descends and moves the neck 12B of the fastener 12 into the gap 1 between the two swing plates 10.
It will be pushed within 3.

Next, as shown in FIG. 7c, the movement of the grooved cam 23 at the outer end of the drive shaft 22 causes both swing plates 10 to rotate in the direction of returning to the same plane again, so that the gap 13 is closed. The neck portion 12B of the fastener 12 is clamped and pressed, and a second press is performed. At that time, the cam 3 of the drive shaft 22
0 disengages from the knife actuating arm 33, the knife 15 escapes upward, causing both rocking plates 10
Only the second pressing of the fastener 12 by means of this method is ensured.

After the two rocking plates 10 press the fastener 12 for the second time, the two rocking plates 10 completely open the gap 13 downward from the lowering process as shown in FIG. The booklet 11 whose metal fittings 12 have been tightened is sent out below both swing plates 10, and the leading end of the booklet 11 is caught by the lower feed rollers 43, 44, thereby being ejected out of the machine. This biting into the rollers 43 and 44 occurs after the neck portion 12B of the fastener 12 has been securely tightened.
Since the fastener 12 is flat, there is no problem of the fastener not getting caught, unlike the rollers in the device shown in FIG.

As described above, in the method for tightening a booklet fastener according to the present invention, the hook portion 12A of the fastener 12 is
The clamping and crimping of the neck 12B after crushing is performed by a pair of rocking plates 10 whose opposing inner sides swing vertically with the outer side as an axis. The metal fittings clamped in the gap 13 between the inner sides of the plates can be compressed without producing impact noise by reducing the gap 13 with the vertical movement of the inner sides of both rocking plates. Compared to the conventional example shown in which both base plates collide with each other and crush the metal fittings, noise can be significantly reduced.

Furthermore, when looking at the process of clamping the fastener neck 12B, the clamping process is achieved by simply moving the swing plates 10 from above to below. This has the effect of improving work efficiency compared to the case where one platform is reciprocated toward the other platform.

Furthermore, in the present invention, since the clamping force of the fastener neck 12B is performed by the vertical movement of both rocking plates, the knife 15 is placed in a position where both rocking plates are raised and the gap 13 is opened upward.
can be inserted into the press surface gap 13 from feeding into the inner side press surface of the fastener.
The action up to the application of clamping force due to the reduction of the size can be reliably performed, and the metal fittings will not spin idle in the valleys, as in the case of the example in Figure 3 where the end fittings of the booklet are dropped into the valleys between the rollers. There is no problem of no jamming, and there is an effect that sufficient tightening pressure can be applied due to reliable surface contact pressure.

[Brief explanation of the drawing]

Fig. 1 is a partial perspective view showing the shape of a fastener in a general-purpose calendar-shaped booklet, Fig. 2 a to d are cross-sectional views of each process showing an example of a conventional fastener tightening method, and Fig. 3 is a separate perspective view. FIG. 4 is a sectional view showing the configuration of a seaming device according to the present invention, FIG. 5 is a side view, FIG. 6 is a partial perspective view of the device, and FIG. A to D are cross-sectional views showing the seaming process in the present invention. In the figure, 10: Rocking plate, 10a: Inside side press surface, 10
b: Outer side, 11: Booklet, 12: Fastener, 12
A: Fastener hook, 12B: Fastener neck, 13: Gap, 14: Pressure plate, 15: Knife, 16: Machine frame,
17: Axial support end, 18: Link, 19: Guide base, 20, 25: Arm, 21: Rod, 22:
Drive shaft, 23: Groove cam, 24, 30: Cam, 2
7: Screw rod, 28: Pressure plate rod, 29: Knife rod, 31: Pressure plate operating arm, 32, 34:
Pin, 33: Knife operating arm, 35: Book feeding section, 36, 37: Feed roller, 38: Guide plate,
39: Stopper, 40: Fastener holder, 42: Fastener supply device, 43, 44: Feed roller.

Claims (1)

[Scope of Claims] 1. Above a pair of rocking plates that are arranged on the same plane and rotate vertically about their respective outer sides with a minute gap between their opposing inner side pressing surfaces. First, a booklet with a fastener attached to its tip is fed onto one of the swing plates so that the fastener crosses the press surface gap between both swing plates, and the hook of the tip is placed on the swing plate. When both rocking plates are rotated upward and both pressing surfaces are released, the neck of the fastener that was subjected to the first press is pushed between both pressing surfaces by the upper knife, and both rocking plates return to the same plane direction. During the process, a second press was performed to squeeze the neck of the fastener between both pressing surfaces, and in the process of rotating both rocking plates downwards, the booklet with the fastener completed was sent out of the machine. How to tighten the fasteners for a calendar-shaped booklet. 2. A pair of rocking plates that are arranged on the same plane and rotate vertically around their respective outer sides with a small gap between their inner side pressing surfaces facing each other, and one rocking plate The hook of the fastener, which is attached to the tip of the booklet fed across the press surface gap between both swing plates, is compressed as a first press on the swing plate. The press plate is arranged to move up and down on the gap between the pressing surfaces of both rocking plates. A calendar-shaped booklet tightening device consisting of a knife for pushing the neck of the fastener between both press surfaces.