JPH0673837B2 - Punching device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field and Outline of the Invention] The present invention relates to a device for punching a punching hole for binding in a booklet such as a form or a catalog, that is, a punching device.

[Prior Art and its Problems] As a device for punching a punching hole for binding in a laminated sheet group such as a form or a catalog, there is a punching device as shown in FIG. 4, for example.

In this structure, a plurality of perforation units (2) and (2) are integrally moved up and down with respect to the table (T), and a lower part of the perforation units (2) and (2) is always in a rotational drive state. The protruding punched cylindrical blade (1) is punched by pushing it into the laminated sheet group (S) placed on the table (T).

In the punching device, in order to satisfactorily punch the lowermost sheet of the laminated sheet group (S), the blade receiving tree (3) is provided on the upper surface of the table (T) so as to face the punching cylindrical blade (1). At the most lowered position of the perforated tubular blade (1), the tip of the perforated tubular blade (1) is in contact with the blade receiving tree (3) as shown by the chain double-dashed line in FIG. Then, the blade receiving tree (3) is movably accommodated in a concave portion (4) having a laterally long opening formed on the table (T), and in this accommodation state, the top surface of the blade receiving tree (3) is It is made to coincide with the upper surface of the table (T).

In this case, the number of perforations increases, and the cutting trace of the cutting edge of the perforating cylinder blade (1) formed on the blade receiving tree (3) becomes large, so that the gap between the perforating cylinder hole (1) and the above-mentioned cutting trace is maximized. The lower layer sheet is pushed in and it becomes impossible to perforate cleanly. Therefore,
Conventionally, the size of the cut mark and the state of perforation are judged by intuition, and the operator manually slightly shifts the blade receiving tree (3) before the defective perforation occurs.

Therefore, as long as the blade receiving tree (3) is displaced by a certain distance in advance at a proper time, the perforation of the lowermost layer sheet which is the least perforated in the laminated sheet group (S) is always good.

However, in the above-mentioned thing, since it is necessary to judge the timing when the blade receiving tree (3) is slid, the timing when the blade receiving tree (3) is slid too early, or conversely it is too late, resulting in poor perforation. The problem arises that Even if the blade receiving tree (3) can be moved accurately when the number of times of drilling reaches a predetermined number, the blade receiving tree (3) must be moved manually, so the drilling work must be interrupted. There is a problem that it is inconvenient to use. Further, due to the automation of the production line, when the laminated sheet group (S) is continuously and automatically transferred, this conventional manual type cannot be adopted.

[Technical Problem] According to the present invention, such a "drilling cylinder blade (1) is rotated to raise and lower a drilling unit (2) having the same, and the drilling cylinder blade (1) is moved to the table (T). The punching unit is of a type in which it is pressed into the laminated sheet group (S) placed on it and punches it, and the above-mentioned punching cylinder blade (1) is in contact with the punching unit (2) at the lowest position in the ascending / descending region. In a piercing device in which the blade receiving tree (3) is arranged at a position ", the blade receiving tree (3) can be moved accurately when the piercing performance becomes insufficient, and the piercing work can be continuously performed without interruption. It is a technical issue to enable the blade receiving tree (3) to be used for a long time when the blade receiving tree (3) is a rectangular plate.

[Technical Means] The technical means of the present invention taken to solve the above technical problem is that "the blade receiving tree (3) is a rectangular plate having a predetermined thickness, and the blade receiving tree (3) is supported. A blade receiving member supporting portion which is positionally variable and detachably supported and fixed, a rotary driving device which rotationally drives the blade receiving member supporting member in a horizontal plane while maintaining the blade receiving member supporting member in a constant posture, and the number of times of perforation unit (2) lifting and lowering. And a counter (K) that outputs a rotation drive signal when the number of rotations reaches a predetermined number, the rotation drive device rotates the blade receiving tree support part by a certain angle according to the rotation drive signal output of the counter (K). It was configured to drive ”.

[Operation] The above technical means operates as follows.

As the number of boring times increases, the blade marks of the blade receiving tree (3) formed by the boring cylindrical blade (1) increase, but the number of times that good boring can be performed is generally constant as a rule of thumb.

The output generation timing of the counter (K) is set to a predetermined value based on the above empirical rule.

Therefore, when the number of perforations reaches the preset number, a rotary drive signal is input from the counter (K) to the rotary drive, and the rotary drive operates for a certain period of time or a certain amount of time to support the blade receiving tree. The part will be driven to rotate by a certain angle in the horizontal plane while maintaining a constant posture, and the new surface of the blade receiving tree (3), which is held on this part, will not face the drilling cylinder blade (1). Becomes Since the blade receiving tree (3) has a rectangular plate-like shape, if the above operation is repeated every time the number of times of punching reaches the set number of times, finally, a circular locus with a radius of gyration by the rotary drive device is obtained. Blade marks are continuous over the entire area.

In such a state, the supporting position of the blade receiving tree (3) is changed and used. Then, a new surface without a blade mark faces the perforated cylindrical blade (1), and the blade can be continuously used in this state until the blade mark continues over the entire circular locus matching the radius of rotation by the rotary drive device.

Then, the blade receiving tree (3) can be used until a group of circular blade marks as a whole are densely continuous.

[Effects] The present invention having the above-described configuration has the following unique effects.

Since the blade receiving tree (3) can be automatically moved accurately at the time when the number of times of bad drilling is reached, the blade receiving tree (3) does not move too early or too late. Permanently piercing can be performed while making full use of the life of the receiving tree (3).

Moreover, the blade receiving tree (3) can be continuously used without interrupting the drilling work.
Because work can be moved, workability improves.

Furthermore, since the blade receiving tree (3) can be used until the group of circular blade marks as a whole are densely continuous, the blade receiving tree (3) can be used for a long time.

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

A first embodiment of the present invention is shown in FIG.

In the punching device of this embodiment, the holding metal fitting (7) is intermittently circularly moved within the recessed portion (4) of the table (T) by a rotary drive device without rotating, so that the blade receiving tree (3) and The position facing the perforated cylindrical blade (1) is shifted in the circumferential direction at regular pitch intervals.

The holding metal fitting (7) has a U-shaped cross section (see FIG. 2).
As a result, the blade receiving tree (3) is press-fitted into the U-shaped cross section, and the mounting height is set so that the upper surface of the blade receiving tree (3) and the upper surface of the table (T) are aligned. Therefore, the parallel sides of the blade receiving tree (3) are held in the relative movement preventing state by the frictional force with the rising portion of the holding metal fitting (7). Further, in order to change the holding position of the blade receiving tree (3) by the holding metal fitting (7) in the longitudinal direction, the blade receiving tree (3) is forcibly removed and pressed into a new position again.

In order to enable the movement in the circumferential direction, as shown in FIG. 1, the first conduction shaft (60) and the second conduction shaft (61) having the enlarged diameter portion (65) on the upper side are recessed. From the bottom of the part (4), the table (T) is rotatably projected to the lower surface side of the table (T). Pulleys (64) are provided on the projections of the first and second transmission shafts (60) (61), respectively. A belt (62) is hung between the pulleys (64) (64) to enable synchronous rotation of the first and second transmission shafts (60) (61). A driven gear (6) is attached to the lower end of the first transmission shaft (60), and the driven gear (6) and the drive gear (5) provided on the output shaft of the pulse motor (P) are engaged with each other. I am making it.

Further, the enlarged diameter portion (65) is embedded so that the upper surface thereof coincides with the bottom surface of the recessed portion (4) formed in the table (T). From the axial center of the enlarged diameter portion (65), A pin (70) formed on the bottom surface of the holding metal fitting (7) is rotatably inserted through the through hole (63) formed at the displaced position.
In addition, the through holes (6
3) are located in the same direction.

The operation timing of the pulse motor (P) is set by a counter (K) that counts the number of times the punching unit (2) is moved up and down via a limit switch (R), and the count value of this counter (K) is set. Becomes a set value, the output signal at this time causes the pulse motor (P) to rotate at a constant angle.

The first and second transmission shafts (60) and (61) are rotated synchronously via the drive gear (5), the driven gear (6) and the belt (62), and the holding metal fitting (7) is through hole (63). The orbit will be performed according to the amount of eccentricity. In this embodiment, the arc length when the holding metal fitting (7) circularly moves is set to about 1 mm to 5 mm every time the number of times the boring unit (2) moves up and down reaches 50 times.

Further, since the holding metal fitting (7) revolves around, the locus where the facing points (blade marks) on the blade receiving tree (3) of the perforated tubular blade (1) are continuous is a circle.

Therefore, when a rectangular blade receiving tree (3) of a certain size is used while changing the position of the blade receiving tree (3), the total length of the trajectory of the facing points (blade traces) of the perforated tubular blade (1) is It is significantly larger than the one that moves the receiving tree (3) in a straight line. Therefore, the replacement cycle of the blade receiving tree (3) becomes long. In addition,
After one revolution of the blade receiving tree (3), the same blade receiving tree (3) can be used by shifting the blade receiving tree (3) in the longitudinal direction by the revolution diameter, but in some cases, The deviation distance may be smaller than the revolution diameter.

Next, a second embodiment of the present invention will be described based on FIGS. 2 and 3.

The moving device of the blade receiving tree (3) in the punching device of this embodiment has substantially the same structure as that of the first embodiment, but the second device is used to move the holding metal fitting (7) accurately by a predetermined amount. As shown in the figure, the rotation of the pulse motor (P) is transmitted to the drive gear (5) via the Geneva gear device (Z).

The Geneva gear device (Z) described above is composed of a driven wheel (98) having 12 teeth and a driving wheel (99) having a pin (97) that meshes with the driven wheel (98). By rotating, as shown in FIG. 3, the pin (97) rotates the driven wheel (98) by one tooth. That is, one rotation of the driving wheel (99) causes the driven wheel (98) to move exactly 30 times.
It is set to rotate once.

As shown in the figure, the driving wheel (99) is attached to the output shaft of the pulse motor (P), and the driven wheel (98) is attached to the drive gear (5).

Therefore, when the count value of the counter (K) becomes a set value and the output shaft of the pulse motor (P) is rotated once by the output signal, the driven wheel (98) of the Geneva gear device (Z) rotates 30 degrees. Driven and driven gear (6)
The holding metal fitting (7) is moved via the pulleys (64), (64) and the like.

In the case of the first and second embodiments described above, the blade receiving tree (3)
Since it revolves in the recessed portion (4) of the table (T), the distance between the side wall of the recessed portion (4) and the blade receiving tree (3) changes, but the blade receiving tree (3) ) And the concave portion (4) are covered with a thin plate, the laminated sheet (S)
Even when the sheet is automatically fed, the laminated sheet group does not fall into the gap and is not caught.

As the moving device, a driving device other than the above-mentioned pulse motor (P) can be used as a substitute, and other detection means such as a photo sensor other than the limit switch (R) can be used for detecting the punching operation. It goes without saying that you can do it.

Further, as the holding metal fitting (7), other supporting structure can be adopted as long as it can give a moving force to the blade receiving tree (3).

[Brief description of drawings]

FIG. 1 is an explanatory view of a moving device according to the first embodiment of the present invention, and FIG.
The figure is an overall explanatory view of a rotary drive device of a second embodiment of the present invention,
FIG. 3 is a plan view of the mechanism of the main part of the rotary drive apparatus of the second embodiment, and FIGS. 4 and 5 are explanatory views of a conventional punching device, in which (1) ... (2) …… Punching unit (3) …… Blade receiving tree (7) …… Holding bracket (T) …… Table (K) …… Counter

Claims (1)

[Claims] 1. A laminated sheet group in which a perforating cylinder blade (1) is rotated and a perforating unit (2) including the perforating cylinder blade (1) is moved up and down to place the perforating cylindrical blade (1) on a table (T). It is of a type that it is pushed into (S) and punches it, and the blade receiving tree (3) is located at a position where the above-mentioned punching cylindrical blade (1) is in contact at the lowest position of the ascending / descending region of the punching unit (2). In the punching device, the blade receiving tree (3) is a rectangular plate with a predetermined thickness, and the blade receiving tree (3) is detachably supported and fixed at a variable supporting position. A rotary drive device for rotationally driving in the horizontal plane while maintaining the blade receiving tree support part in a fixed posture, and a counter (for outputting a rotary drive signal when the number of times of raising and lowering the perforation unit (2) reaches a predetermined number ( K) and the rotation driving device rotates the counter (K). The motion signal output, configuration and the punching device for the blade receiving part supporting portion fixed angular rotation driven.