JPH0428793Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial field of application) This invention relates to a cover pasting forming device for a bookbinding machine.

(Prior art) In a bookbinding machine, such as a perfect binding machine, a clamper that clamps the paper to be bound is transported, and in the process, the back of the paper is cut with a cutter, and then glue is applied to the back of the paper, and the glue is removed. The paper is used to attach the cover to the back of the paper. When attaching this cover, first attach the cover to the back of the paper as described above, then press the attached part to ensure that the cover and paper are attached, and use molding scissors. The scissors are slid to sandwich and press the paper from both outside sides of the cover, thereby forming the pasted portion.

In addition to the structure in which the above-mentioned cover is pasted and formed while the clamped paper is being transported, without stopping the transport, and thus while the transport operation is continuing, There is also a structure in which the cover is temporarily stopped at the stop position, and the cover is pasted and formed at that stop position.

In such a configuration in which the cover is stopped once and then pasted and molded at that stopped position, the setting position of the cover and the installation position of the molding scissors are usually fixed in advance. Therefore, if the transported paper is not always stopped at a fixed position that corresponds to the set cover and the installation position of the scissors, it is impossible to expect the desired cover to be pasted or formed. In other words, if there are variations in the stopping position of the paper, even if you have prepared a cover of a size that matches the paper, it will not be possible to attach the cover to the paper so that the top and bottom of both sides match. .

However, as a practical matter, it is extremely difficult to always keep the paper at a constant stop position when the paper is transported at high speed, or because the transport chain becomes elongated due to long-term use. However, there is a drawback that maintenance and inspection for this purpose is extremely troublesome.

(Problem to be solved by the invention) The purpose of this invention is to use a simple structure to ensure that the stopping position of the transported paper for cover pasting and forming is always constant. .

(Means for solving the problem) In this invention, a position detection lever is prepared which is pressed by the clamper that clamps the paper when the clamper reaches a predetermined position, and when the clamper stops, the By rotating the position detection lever, the cover receiving plate, on which the cover is previously placed, is moved together with the cover above, so that its stopping position and the stopping position of the clamper are always at a constant relative position. It is characterized by

(Function) When the clamper stops, its stop position is detected by the position detection lever, and as the cover plate is moved by the rotation of this position detection lever, the position detection lever and the cover plate are moved. Since the relative positional relationship with the plate is always constant, the relative positional relationship between the clamper stopped with the position detection lever pressed and the cover on the cover receiving plate is also always constant. Therefore, even if the clamper stops at a slightly different position, the cover on the cover stand will also move to a position that matches the shifted and stopped position. This allows the cover to adhere properly to the paper being clamped.

(Example) An example of this invention will be explained with the help of diagrams: 1
is a clamper, 2 is a clamper member on the fixed side, and 3 is a movable side clamper member. For example, the clamper member 3
is said to be able to slide freely. The paper is clamped between the clamper members 2 and 3 by this slide. It is assumed that this clamp 1 is transported, for example, in the direction of the arrow by a required drive source and chain.

Reference numeral 5 denotes a cover pasting table, which can be raised and lowered by a suitable lifting mechanism. A pair of scissors 6 are slidably installed on the surface of the attachment table 5 on both sides of the stop position of the clamper 1, and when these are driven in the direction of the arrow, as will be described later, The cover affixed to the paper is pressed from both sides to form the paper. These structures are not particularly different from this type of bookbinding mechanism. For the above-mentioned clamper 1, pasting table 5, elevating mechanism, etc., those having the structure described in, for example, Japanese Utility Model Publication No. 58-30705 can be used.

According to this idea, a pair of cover receiving plates 7 are installed above the scissors 6 on both sides of the stop position of the clamper 1. This cover receiving plate 7 is slidable in a direction along the direction in which the clamper 1 is transported. The cover receiving plate 7 is provided with a cover receiving lever 8 that brings the top surface (or the ground) of the cover into contact. The lever 8 is slidable along the long groove 9 and fixed at any position. The cover to be pasted is placed on the surface of the cover receiving plate 7 so that it crosses the stop position of the clamper 1, and the top surface of the cover comes into contact with the cover receiving lever 8.

The paper is clamped by the clamper 1 so that its relative positional relationship is always constant. For example, by clamping the paper so that the top surface (or the ground) of the paper is always in contact with the pole 4, the relative positional relationship between the paper and the clamper can always be kept constant. By making the lever 8 movable along the long groove 9, it is possible to correct the set position of the cover.

A member 10 for supporting the cover plate 7 is fixed to the lower surface thereof, and a guide shaft 11 is inserted through this member 10. The member 10 is slidable along this guide shaft 11. 12
A pair of base frames are integrated with the attachment table 5, and both ends of the guide shaft 11 are supported by the base frames. A coil spring 13 is disposed between the one base frame 12 and the one member 10, and its elasticity always biases the cover receiving plate 7 in the opposite direction to the direction in which the clamper 1 is transferred. .

Reference numeral 14 denotes a position detection lever for detecting the stop position of the clamper 1, and the end of this lever is fixed to a shaft 15 supported by the base frame 12. Further, the tip thereof is adapted to come into contact with the end surface on the tip side of the clamper 1 that has been transferred. A roller 16 is rotatably supported at the tip of the position detection lever 14. In order to prevent the position detection lever 14 from rotating more than necessary and falling down, a stopper screw 17 is screwed into the position detection lever 14, and its tip is brought into contact with the base frame 12 under normal conditions.

A lever 18 for moving the cover receiving plate 7 is fixed to the shaft 15. The tip of this lever 18 is engaged with a stepped engagement portion 19 on the back surface of the cover receiving plate 7. Therefore, as will be described later, when the position detection lever 14 is pushed by the clamper 1 and rotated, the shaft 15 rotates, thereby causing the lever 18 to rotate. Due to this rotation, the cover receiving plate 7 engages with the engaging portion 19 at its tip.
is moved in the direction of movement of the clamper 1 against the elasticity of the coil spring 13.

In the above configuration, when the clamper 1 is transported and stopped above the attachment table 5, the attachment table 5 rises from the position shown in FIG. 2 to the position shown in FIG. 3. The operation up to this point is the same as that of conventional devices of this type, but during this rising process, the roller 16 at the tip of the position detection lever 14 hits the tapered portion 2A on the tip side of the clamper member 2, which has already stopped at the beginning. come into contact with When the pasting table 5 further rises, the position detection lever 14 is rotated by being pushed by the tapered portion 2A. Due to this rotation, axis 1
5. Through the lever 18, the cover receiving plate 7 is moved along the direction in which the clamper 1 is moved against the elasticity of the coil spring 13.

When the pasting table 5 further rises, the roller 16 comes into contact with the end surface 2B of the clamper member 2 as shown in FIG. As mentioned above, the position detection lever 1
4. Since the lever 18 is fixed to the shaft 15,
Since the angle formed by both levers 14 and 18 is constant,
When the roller 16 is in contact with the end surface 2B, the relative position between the end surface 2B and the cover receiving plate 7 is always the same regardless of the stopping position as long as the clamper member 2 stops within a predetermined range. It becomes constant.
Therefore, the relative position between the paper clamped by the clamper 1 and the cover placed on the cover receiving plate 7 in contact with the lever 8 is always constant.

The cover is pressed against the back surface of the paper by the cover receiving plate 7 which has been raised as described above. Thereafter, the scissors 6 move to sandwich and press the cover, thereby forming the cover. After this shaping, the pasting table 5 is lowered toward its original position. This lowering operation is the same as the conventional structure, but along with this lowering, the position detection lever 14, lever 18, etc. are also returned to their initial positions by the elasticity of the coil spring 13. When the pasting table 5 reaches the lowest point, the cover for the next pasting is supplied to the cover receiving plate 7. Repeat this below.

Note that the clamper 1 may be transferred in the direction opposite to the arrow, and even in that case, the cover receiving plate 7 will be slid by the raising of the pasting table 5 after the clamper 1 has stopped.

(Effects of the invention) As detailed above, according to this invention, when forming a cover by pasting the cover after stopping the clamper that clamps the paper, the relative The effect is that the cover can be pasted while keeping the position constant.

[Brief explanation of the drawing]

Figure 1 is a perspective view showing an embodiment of this invention;
3 are partial front views for explaining the operating state. 1... Clamper, 2A... Taper part, 2B
... End surface, 5 ... Pasting stand, 6 ... Scissors fittings, 7 ... Cover receiving plate, 12 ... Base frame, 13 ...
Coil spring, 14...Position detection lever, 18...
lever.

Claims (1)

[Claim for Utility Model Registration] A clamper that clamps the paper and a cover attached to the paper are pinched together so that the relative positional relationship between the paper and the clamp position is always constant. a pair of scissors that can be slid freely; and a clamper that is moved above the scissors and stopped at a position where the cover is to be pasted, and then rises toward the clamper to press and paste the cover on the back side of the paper. In a cover pasting forming device for a bookbinding machine, which is equipped with a pasting table, the cover to be pasted is placed in a fixed position, and is slidable along the direction of movement of the clamper, and a cover receiving plate that rises together with the attachment base; a position detection lever that rotates while coming into contact with an end surface of the clamper by rising together with the attachment base relative to the stationary clamper; Rotates integrally with the detection lever,
and a lever whose tip engages with the cover receiving plate so that the cover receiving plate is slid by the rotation, and the clamper is moved against the stopped clamper by the rotation of the lever. A cover pasting forming device for a bookbinding machine, wherein the cover receiving plate is slid to a position where a constant relative positional relationship is maintained at all times.