JPH0524738A - Bending device of booklet by knife - Google Patents

Abstract

PURPOSE:To provide a concise device which can take a booklet bound with a wire from its upper surface to bend the booklet from its lower side without a turn out and maintain the accuracy of a bending position. CONSTITUTION:Such constitution is provided that a booklet (s) is positioned by a stopper piece 24 after being inserted into a table 1, at the same time, a pair of guide bars 3, 3 are lowered till right above the booklet (s), then a knife 5 is raised so as to push up the prescribed position of the booklet s and is thrust between the guide bars 3, 3 while creasing on the prescribed position of the said booklet (s). After this time, the said guide bars 3, 3 are raised again so as to stop right under the bend rollers 2, 2 and while, the knife 5 thrusts the booklet (s) between the bend rollers 2, 2 and goes down to an initial position and, on the other hand, the said stopper piece 24 also returns to the initial status.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a booklet knife folding device used for folding a booklet having one or more sheets stacked at a predetermined position, and more particularly, binding the booklet at a predetermined position with wire from above. The present invention relates to a booklet knife folding apparatus which is optimal when it is necessary to fold a booklet from below at the position because the end of the wire is exposed downward.

[0002]

2. Description of the Related Art A conventional device of this type is for placing a booklet having a folding knife for lowering a booklet from above and folding it at a predetermined position, and a gap for passing the knife at the knife raising / lowering position. A table and a pair of folding rollers located below the table, the pair of folding rollers being folded by the knife and folding the booklet inserted between them into a firmly folded state and sending it downward. And a positioning means for positioning the booklet to be folded on the table. Further, the above-mentioned device is a device having a structure inverted upside down, for folding a booklet that is lifted from below and bending it at a predetermined position, and for placing a booklet that has a clearance for passing the knife at the elevating position of the knife. A table, a pair of folding rollers located above the table, folded by the knife, and folding the projected booklet into a firmly folded state and sending it upward; and a folding target on the table. Some of them are composed of positioning means for positioning the booklet.

[0003]

The former of the above-mentioned conventional examples is a basic one, and a booklet in which a plurality of sheets of paper are stacked is bent at the center or at another position without wire binding. It has been used in some cases. As long as it is, the booklet can be bent accurately, and there is no particular problem. By the way, the wire binding is performed from above the booklet due to the mechanism of the device for performing the binding, and as a result, the end portion of the wire is exposed in a state of being bent toward the lower surface side of the booklet. However, for the booklet bound by wire binding in this way, when it is necessary to fold it at the wire binding position or at another position, the exposed side of the wire end, that is, the lower surface side is set to the inside. If you try to do this with the former device, the former device is of a type in which the knife descends from above and makes a crease. Need to be supplied to the table. However, the reversal of the booklet causes the size of the device and the complexity of the mechanism to be avoided.

The latter of the conventional examples is a type in which a booklet placed on a table is pushed up from a predetermined position to make a crease, and therefore a wire-stitched booklet is folded. Even when tuned, it is not necessary to invert it in advance like the former. However, it is difficult to bend at an accurate position for the following reasons. That is, in such a device, the booklet to be folded is fed into the table from the side, and the folding roller does not interfere with the table in order not to disturb the feeding operation of the booklet. There is no choice but to place a wide gap between them. As a result, when the knife pushes up the booklet placed on the table, the booklet is immediately pushed up to the vicinity of contact with the folding roller without making a crease, and the center of the booklet is not always folded. It is not limited to the bending position, and even if it is, it does not mean that the left and right are perfectly balanced, so that a slight deviation occurs between the left and right, and it is about the time before and after the contact with the folding roller. There is a very serious problem that a crease will be formed at the displaced position.

It is an object of the present invention, in particular, to provide a knife folding device for a booklet, which is effective for folding a wire-bound booklet. More specifically, the former conventional example is used. It eliminates the problem of having to invert and supply such a booklet, and eliminates the problem of loss of accuracy of the folding position as in the latter conventional example, so that it is simple and accurate. It is an object of the present invention to provide a booklet knife folding device capable of folding a booklet.

[0006]

SUMMARY OF THE INVENTION The gist of the structure of the present invention is a knife for raising and lowering a booklet, a knife having a folding blade portion at the upper end, and a knife for raising and lowering the knife. A booklet placing table located at a position where the knife passes, and a booklet placing table having a passage gap at a passage position of the knife, and a pair of folding rollers located above the table, each of which passes the knife. A pair of folding rollers positioned on both sides of the extended position of the passing gap, which is a position, and a pair of guide rods positioned between the pair of folding rollers and the table, each of which is a position where the knife passes. A positioning means having a pair of guide bars that move up and down on both sides of an extended position of a passage gap, and a positioning member that positions the four sides of a booklet placed on the table. Positioning means for retracting the positioning member at that position so as to allow it when loading into the table, and positioning of the positioning means at the retracted position at the same time when the booklet is loaded on the table. The member returns to a fixed position to position the booklet, the pair of guide bars descend from the upper retracted position to a predetermined guide position, the knife starts to rise, and the knife passes through the passage gap. Then, the booklet is pushed up to a predetermined position, and the guide rod is gradually raised from the time when the booklet is pushed between the pair of guide rods while making a crease at that position, and finally the guide rod is retracted upward. While stopping at the position, the knife inserts a creased booklet between the folding rollers that are rotating so as to pull it upward while always folding the booklet definitely. Is the position To the lowered position is lowered, a knife folding apparatus of a booklet configured with a drive for driving mechanism so as to retreat the positioning member also a predetermined holding position of the other said positioning means.

The folding roller serves to make a crease at a predetermined position with the knife, and folds the booklet inserted between the folding rollers in a definite folded state and feeds it upward. The rotation direction is determined so that each facing portion moves upward so that the booklet inserted between the sheets can be sent upward, and the drive mechanism is configured to always rotate and drive in such a manner. The pair of folding rollers are arranged so as to be movable in a direction in which they are separated from each other within a certain range, and the pair of folding rollers exert an action force so that a booklet inserted between them can be strongly pressed by a spring member. give.

The pair of guide rods prevent the booklet pushed up by the knife from below on both sides and the upper surface side so as not to be pushed up unnecessarily high as a whole, so that the crease operation by the knife can be started as soon as possible. Therefore, it should be constructed with a diameter as small as possible, and by the drive mechanism, the knife should be moved downward so as to take a guide position as low as possible before the pushing-up operation of the knife is performed. Should be determined. In addition, when the booklet is fed from the side to the table, it should be retracted as high as possible so as not to obstruct this.

As long as it has the above-mentioned function, the positioning means can have any structure. For example, the positioning members on both sides are constituted by fixed guide walls which extend guides on both sides of the conveyor device for feeding the booklet, and those at the front and rear ends are configured to be openable / closable by stopper pieces. Each stopper piece is rotatably supported at its lower end, and an air cylinder or other expansion / contraction mechanism is connected to an arm extending in the direction perpendicular to the vicinity of the lower end. To do. The front and rear ends of the booklet placed on the table in a raised state are accurately positioned. Usually, only the stopper piece on the receiving side of the booklet may be configured to be undulated.

The drive mechanism is configured to include a sensor for detecting the passage of a booklet arranged immediately before the booklet receiving side on the table, and this sensor detects the passage of the booklet and outputs a drive signal. Then, in response to this, the positioning member of the positioning means is immediately brought into a predetermined positioning state (for example, the stopper piece is raised), the pair of guide rods is lowered to the guide position, and then the knife is raised. It is suitable to start the operation of the drive mechanism such as. Needless to say, the rotating operation of the folding roller should be always performed as described above.

[0011]

Since the present invention is constructed as described above, it operates as follows. When the specified sheets are collated in the previous process and wire bound in some cases, and then the booklet is fed, for example, when a sensor that detects the passage of the booklet described above is adopted, It is detected that the toner has been fed to a predetermined position, a drive signal is output, and predetermined operations described later are sequentially started. When the booklet is fed to the table (when the sensor is arranged immediately in front of the table, the booklet is placed on the table by detecting that the booklet has passed the position. At the same time, the positioning member of the positioning means that has been retracted returns to a fixed position to position the rear end of the booklet, and at the same time, the pair of guide rods is at the retracted position. To a predetermined guide position, for example, a position about 1 mm from the upper surface of the table, and the knife starts to rise.

The knife rapidly passes through a passage gap opened at a corresponding position of the table to push up a predetermined position of the booklet, and while pushing the booklet between the pair of guide bars, the predetermined position. Make a crease. On the other hand,
The pair of guide rods thus starts to rise from the time when the booklet is thrust between them by the knife,
Finally, it rises to the uppermost position (immediately below the pair of folding rollers), which is the retracted position, and stops. Also, the knife is
The booklet is continuously pushed up at the position of the fold formed by the booklet and the pair of guide rods, and is pushed between the pair of folding rollers. As described above, the folding roller is constantly rotating, and the folds formed by the knife and the guide rod of the booklet inserted therebetween as described above are transferred to a definite folding state. It is to pull up while making it. Then, it is transferred to the required next step.

Immediately thereafter, the knife descends to the lowermost position which is the initial position, that is, below the table.
On the other hand, the positioning member of the positioning means also retreats to the retreat position after the step of creasing the booklet with the knife and the guide rod is completed. Since the positioning means has completed its function after the crease formation step, it may be retracted to the retracted position at any time. The retracted position is below or above the table, depending on the configuration of its positioning means.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. As shown in FIG. 1, a pair of folding rollers 2 and 2 are arranged above a table 1 on which a booklet s is placed, and a pair of folding rollers 2 and 2 are vertically movable between the folding rollers 2 and 2 and the table 1. Guide rods 3, 3 are provided. The table 1 has, at its central portion, a single passage gap 4 orthogonal to a rectangular mounting space for mounting the booklet s. The passage gap 4 is a passage gap when the knife 5 for folding the booklet s, which will be described later, is moved up and down.

The folding rollers 2 and 2 are parallel to the passage gap 4 and have a center line portion between them.
It is arranged so as to be located on the vertically upward extension of. As shown in FIG. 2, both folding rollers 2 and 2 rotatably support both ends thereof on slider plates 6 and 6. Rollers 2, 2
With respect to the above, it is arranged slidably so that the above condition is always satisfied. It should be noted that tension springs 8 are arranged between the slider plates 6 attached to the folding rollers 2 and 2 so as to attract each other. In addition, reference numeral 9 in the drawing denotes a slide rail portion provided in the guide portion 7.
Is a stopper that prevents the two folding rollers 2 and 2 from being displaced from the center line portion when they face each other. Further, the folding rollers 2 and 2 have booklets s inserted between them.
A rotative driving force is applied so as to definitively bend along the fold line and to send it upward. It is adapted to be transmitted from an electric motor (not shown) through a sprocket, a chain and a gear.

The knife 5 for folding the booklet s is arranged so as to be movable up and down below the extension of the passage gap 4 of the table 1. The width of the booklet s is slightly wider than the target booklet s, and the folding blade is provided at the upper end. As shown in FIG. 1, the knife 5 has a lower portion fixed to a base holder 11, and the base holder 11 is fixed to the slider 1.
2 is slidably fitted to a vertically fixed guide shaft 13. That is, the purpose is to accurately raise and lower the knife 5, which will be described later, in a vertical plane. Needless to say, the vertical surface is a surface that passes through the passage gap 4 of the table 1 and reaches the center line portion between the folding rollers 2 and 2. The base holder 11 is pin-coupled to the crank plate 15 via the connecting rod 14. By rotating the crank plate 15, the knife 5 is moved to the table 1.
The folding roller 2 from below through the passing gap 4;
The purpose is to move up and down between two. The crank plate 1
5 is connected to the electric motor via a clutch mechanism (not shown) on the way.

The pair of guide rods 3, 3 are arranged on both sides of the vertical surface of the knife 5 which moves up and down, and at intervals so that the knife 5 and the booklet s folded in half and pushed up by the knife 5 can pass through. Further, as described above, the table 1 and the folding rollers 2 and 2 are configured to be movable up and down. As shown in FIG. 3, both ends of the pair of guide rods 3 and 3 are fixed to the support plates 16 and 16, and the support plates 16 and 16 can be slid up and down on the guide portions 17 and 17 of the support frame. To be installed. The support plates 16 and 16 are respectively connected to one end of an operating arm 19 via a connecting rod 18 by pin connection. The operating arm 19 is rotatably attached to a part of a supporting frame in the middle of the operating arm 19, and a tension spring 20 is connected to the other end thereof.
The action force in the direction of raising 6 is applied. Further, the auxiliary arms 21 are connected from the shaft attachment portions in the middle of the respective operation arms 19.
And a driven roller 23 that comes into contact with the outer periphery of the cam 22 is rotatably attached to the tip thereof.

The cam 22 corresponds to the crank plate 15
And the outer circumference of the guide rod 3 as shown in FIG. 3 (this presupposes that the knife 5 is at the lowest position, and the guide rod 3,
When the crank plate 15 rotates and the knife 5 starts to move upward, the cam 22 also rotates at the same time, and the tip of the knife 5 moves onto the table 1 before the guide rod. 3 and 3 are lowered to the lowest position, the tip of the knife 5 comes out on the table 1 and pushes up the booklet s, and while holding that position until the booklet s is pushed in while making a crease, the knife 5 is raised to the highest position. Even when the knife 5 is raised to the raised position and returned from the highest raised state to the lowest lowered state, the knife 5 is held at the same position, that is, the highest raised position.

When the crank plate 15 rotates 90 degrees, the knife 5 rises from the lowermost position to a position where the upper end of the knife 5 coincides with the upper surface of the table 1, and the succeeding 90 ° rotation reaches the highest position. With a rotation of 90 degrees, the upper end of the table 1 is lowered until it coincides with the upper surface of the table 1.
Assuming that the cam 22 returns to the original position, that is, the lowest position by rotating the cam 22 degrees, as shown in FIG. The large-diameter portion is formed, and further, each 45-degree portion between the small-diameter portion and the large-diameter portion is formed as an excessive smooth portion connecting them smoothly. The rotation angle state of the cam 22 in FIG. 3 corresponds to the lowermost state of the knife 5.

Fixed guide walls (not shown) are formed on both sides of the table 1 by extending guides on both sides of the conveyor device c for feeding the booklet s to the table 1 (not shown). As shown in FIG. 1, a positioning mechanism that can be opened and closed by the stopper pieces 24, 24 is configured. The stopper pieces 24, 24 are, as shown in FIG.
At the boundary between the conveyor device c and the conveyor device c, the supporting piece 25 is pivotally attached to the supporting frame below the table 1 via the supporting pieces 25. Booklet s on table 1 when standing upright
Is configured to be accurately positioned. Arms 26 project from the support pieces 25, 25 at 90 degrees and are pin-connected to an operating rod 29 of a solenoid device 28 via connecting rods 27. Working rod 29
That is, the stopper 24 stands up when is protruded. The stopper pieces 24, 24 are formed in a skewer shape, and the conveyor device c corresponding to these stopper pieces is positioned.
Also in the part of (1), a large number of grooves are formed corresponding to those skewers.

A booklet detection sensor 30 is arranged immediately before the table 1. More specifically, the booklet detection sensor 30 is located immediately below the table 1 and directly below the conveyor device c, as shown in FIG. When the passage of the booklet s is detected by a reflection type sensor composed of a light emitting element and a light receiving element, a drive signal is output to drive the solenoid device 28 to raise the stopper piece 24, and at the same time, The clutch mechanism is connected to drive the crank plate 15 and the cam 22 to rotate. The clutch mechanism rotates the crank plate 15 and the cam 22 once to disengage them immediately. It also has a brake device to stop it in exactly one revolution.

Since this embodiment is constructed as described above, it operates as follows. This example relates to an example in which a predetermined number of sheets are collated in the previous step, and then a booklet s wire-stitched at the center is fed from the left side in FIG. 1 by a conveyor device c. The booklet s has a crease at its center and is sent upward through the folding rollers 2 and 2. Since the booklet s is not sent to the right side of the table 1 in FIG. 1, the stopper piece 24 on the right side in FIG. 1 is always kept upright.

The booklet s, which has been gathered in the previous step and bound by wire, is fed toward the table 1 by the conveyor device c. When the booklet s passes just in front of the table 1, the booklet detection sensor 30 arranged immediately below the conveyor device c.
Detects this and outputs a drive signal to drive the solenoid device 28 of the left stopper piece 24 to raise the corresponding stopper piece 24, and the booklet fed to the table 1 as described above. Accurately position the front and rear ends of s. On the other hand, the clutch mechanism installed between the electric motor and the shaft of the crank plate 15 and the cam 22 is brought into a connected state, and these are rotationally driven.

When the booklet s is positioned on the table 1, on the other hand, the driven roller 23 is moved to the left in FIG. 3 along with the rotation of the cam 22, and the actuating arm 19 is moved clockwise. The support plate 16 is rotated to lower the support plate 16 via the connecting rod 18, and the pair of guide rods 3, 3 are lowered to the lowest position, that is, just above the upper surface of the booklet s. On the other hand, with the rotation of the crank plate 15, the base holder 11 is raised via the connecting rod 14 and the knife 5 is raised.

By the time the upper end of the knife 5 passes through the passage gap 4 of the table 1, the guide rods 3, 3 are at the lowest position as described above and shown in FIG. When the knife 5 further rises with the rotation of the plate 15 and the booklet s is pushed up at the center of the folding position, as shown in FIG. Since the booklet s in which 3 and 3 are pushed up is brought into contact with and restrained on both sides of the upper surface of the pushed up position,
This prevents the booklet s from moving in the front-rear direction and assists the folding operation by the knife 5. Further, when the crank plate 15 further rotates and the knife 5 further rises and reaches the position where the knife 5 is thrust together with the booklet s having the crease between the guide rods 3 and 3, the cam 22 shifts to a small diameter portion with the rotation. Therefore, the driven roller 23 moves to the right in FIG. 3 together with the action of the tension spring 20 to rotate the actuating arm 19 in the counterclockwise direction and raise the support plate 16 via the connecting rod 18. Then, as shown in FIG. 6, the pair of guide rods 3, 3 are moved to the highest position, that is, the retracted position immediately below the folding rollers 2, 2.

As described above, at the same time when the guide rods 3 and 3 are raised to the highest position, the knife 5 is also in the highest state, and the booklet s that has been pushed up is pushed between the pair of folding rollers 2 and 2. Immediately after that, the descending operation is started, and as the crank plate 15 continues to rotate, it descends to the lowermost position under the table 1 and stops. The crank plate 15
As described above, the clutch mechanism is disengaged at this point, so the clutch mechanism is stopped. The braking system stops exactly at this position. Since the clutch mechanism releases the engagement, naturally, the cam 22 also stops rotating at the same position, and the guide rods 3, 3 are stopped at the highest position.
Further, the stopper piece 24 releases the operation of the solenoid device 28 at the time when the guide rods 3, 3 start to move up and retracts the actuating rod 29, so that the stopper piece 24 returns to the lying state shown in FIG. It stands by until the drive signal is output.

As the booklet s inserted between the folding rollers 2 and 2 is rotated, the booklet s is pulled upward while being strongly pressed, and in a definite folded state, it is transferred to the upper conveyor means.

[0028]

According to the present invention, however, it is particularly effective for folding a wire-stitched booklet, and the wire-stitched booklet can be supplied as it is from the upper side without inverting and the folding operation can be performed. Although the knife is pushed up from below, the accuracy of the folding position of the booklet can be maintained by the action of the guide rod.

[Brief description of drawings]

FIG. 1 is a schematic front view with a part omitted.

FIG. 2 is a schematic front view showing a supporting mechanism of a folding roller.

FIG. 3 is a schematic front explanatory view of a drive mechanism for a guide rod.

FIG. 4 is an explanatory view showing a state where the knife is lifted up to just below a passing gap when the guide rod is at the lowest position.

FIG. 5 is an explanatory view showing a state in which the knife slightly pushes over the passage gap and starts pushing up the booklet when the guide bar is at the lowest position.

FIG. 6 is an explanatory view showing a state in which the knife has risen to just below the folding roller and the guide rod has also risen.

[Explanation of symbols]

 1 Table 2 Folding Roller 3 Guide Rod 4 Gap for Passing 5 Knife 6 Slider Plate 7 Guide Part 8 Tension Spring 9 Slide Rail Part 10 Stopper 11 Base Holder 12 Slider 13 Guide Shaft 14 Connecting Rod 15 Crank Plate 16 Support Plate 17 Guide Part 18 Connecting rod 19 Operating arm 20 Tension spring 21 Auxiliary arm 22 Cam 23 Driven roller 24 Stopper piece 25 Support piece 26 Arm 27 Connecting rod 28 Solenoid device 29 Operating rod 30 Booklet detection sensor c Conveyor device s Booklet

Claims (1)

Claim: What is claimed is: 1. A knife for raising and lowering a booklet, comprising a knife having a folding blade portion at the upper end, and a table for placing a booklet which is located in the middle of raising and lowering the knife. A booklet mounting table having a passage gap at the knife passage position, and a pair of folding rollers located above the table, each of which is an extension position of the passage gap that is the knife passage position. A pair of folding rollers located on both sides of the table, and a pair of guide rods located between the pair of folding rollers and the table, both sides of the extended position of the passage gap being the passage position of the knife. A positioning means having a pair of guide rods for moving up and down, and a positioning member for positioning the four sides of the booklet placed on the table, which is allowed when the booklet is loaded on the table. When the booklet is loaded on the table, the positioning member for retracting the positioning member at that position and the positioning member for the positioning means at the retracted position at the same time position the booklet at a fixed position. The pair of guide bars descends from the upper retracted position to a predetermined guide position, the knife starts to rise, and the knife passes through the passage gap and pushes up a predetermined position of the booklet. , The guide rod gradually rises from the time when the booklet is inserted between the pair of guide rods while making a crease at the position, and finally stops at the upper retracted position, while the knife is After inserting the folded booklet between the folding rollers that are rotating so as to always pull it upward while definitely bending it, descend to the lowest position, which is the initial position, Before the other Booklet knife folding device constructed in the positioning member of the positioning means is also a drive mechanism for driving to retracted to a predetermined retreat position.