JPS6135425Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a guillotine-type cutting device for cutting mainly sheet-like materials such as paper, paperboard, cardboard, and synthetic resin sheets. This relates to a device for adjusting the mounting height of the blade that is directly supported.

Conventionally, with guillotine-type cutting machines, if the blade is not set correctly, there may be some uncut parts of the sheet during operation, so at least when the blade reaches the bottom dead center, Install and set the blades horizontally so that their full widths touch. However, in reality, the cutting blade inevitably wears out as it is used, and it is essential to adjust the position of the blade to the optimum position each time it is polished and reattached.
The adjustment mechanism for this purpose basically follows the conventional adjustment mechanism in the present invention, and the basic configuration of the adjustment mechanism is shown in Fig. 5, which is an explanatory diagram of the present invention. A brief explanation is as follows. First, the blade 4 is attached to the blade holder 3, and a diagonal slit is cut on the back surface of the blade holder 3 so that the blade 4 descends diagonally along the length of the blade. On the other hand, a block 8 is attached to the frame side, and this block 8 is assembled so as to fit into the slit.
Adjustment of the position of the blade holder 3, that is, adjustment so that the cutting end of the blade attached to the blade holder 3 hits the table 2 in parallel, is done by slightly changing the attachment position of the block 8 to the frame. It is designed to be adjusted. For this reason, the block 8 is equipped with an eccentric shaft mechanism for adjustment, and the eccentric shaft 10 is rotatably attached to the frame 1.
On the other hand, the working end 11 is eccentrically attached to the tip thereof, and by rotating this eccentric shaft 10, the block 8 fitted into the pin-shaped working end 11 changes its position up and down. . Conventionally, in such an adjustment mechanism, the adjustment end 12 of the eccentric shaft 10 is turned directly with a tool or a handle attached to the adjustment end 12, and the eccentric shaft is fixed at the optimal position with a lock nut. It is something that However, when using such a mechanism, the operator must go to the rear of the device each time to make adjustments. This means that this type of equipment is installed in an extremely small work site considering the actual usage conditions in Japan, and even if it is not narrow, the work site is extremely small because the work materials such as paper are piled up around it. Considering this, it was pointed out as a significant inconvenience in terms of work. In addition, conventionally, when rotating this eccentric shaft, the blade holder is rotated directly, so considering that the blade holder is extremely heavy, it requires a large amount of force to rotate the eccentric shaft. It required skill.

The present invention was developed in view of these circumstances, and its configuration is such that the blade holder of a guillotine-type cutting machine fits into a block protruding from the frame at a slit on the back side of the blade holder, and the blade holder fits into the block protruding from the frame. In an apparatus in which the block is guided to set an upward and downward locus, and the protruding position of the block relative to the frame is adjusted by an eccentric shaft mechanism, a worm wheel is attached to the adjustment end of the eccentric shaft, and a worm wheel is attached to the adjustment end of the eccentric shaft. A worm is engaged with the worm shaft, an operating shaft is directly or indirectly connected to the worm shaft, the tip of the operating shaft is pulled out to the front of the device, and an adjustment dial is attached to the end. This eliminates the work required in the past at the back of the machine, and allows the operator to adjust the blade position by simply adjusting a dial while remaining at the front of the machine.

The present invention will be explained in detail below based on the illustrated embodiments. 1 and 2 show the overall configuration of a cutting machine, with reference numeral 1 representing a frame and reference numeral 2 representing a table. This frame 1 has a so-called gate shape above a table 2, and supports a blade holder 3 in the center by front and rear main frames and sub-frames. Incidentally, the cutting machine shown in this example is of relatively large specification, and the pressure acting on the cutting blade is approximately several tons, so the main frame should be moved rearward enough to receive the reaction force. It will be placed in In other words, the main frame itself needs to have sufficient width, so when the momentum is sent forward, the position of the worker and the position of the blade will be too far apart, which will significantly impair the operability, so the main frame should be moved backwards. It is arranged in Next, the structure of the blade holder 3 and its driving device will be described. The blade holder 3 is a cast iron member having a substantially flat plate shape, and the blade 4 is attached to the lower end surface of the cast iron member with a bolt. A pair of left and right slits 5 are formed at the rear of the blade holder 3. Of course, as will be described later, in this embodiment, since the blade holder 3 is configured to be lowered by only one crank mechanism on the right side, a pair of left and right slits 5 is required. In the case of a type that is attached and pulled down from both sides, it is sufficient to provide only one slit 5. It goes without saying that the present invention can be applied to such things as well. A crank mechanism is connected to the side surface of the blade holder 3, and the small end of a conrod 7 attached to the tip of the crank, indicated by reference numeral 6, is connected to the side end surface of the blade holder 3 with a pin.
Incidentally, this crank is constructed so that the rotational force which is rotated by an appropriate power is connected/disconnected by an electromagnetic clutch or the like, so that it rotates only during the disconnection action. Since these are conventionally known devices, further explanation will be omitted. Next, a mechanism for adjusting the position of this blade holder 3 will be explained. A block 8 is attached to the frame 1 side, and this block 8 is fitted into the slit 5. This block 8 is not directly attached to the frame, but first has an eccentric shaft 10 rotatably attached to the frame 1, and a pin-shaped working end 11 that is integral with the eccentric shaft 10 and extends eccentrically. It is constructed by being fitted into the center of the block. and eccentric axis 1
The other end of 0 extends sufficiently until it protrudes from the rear of the frame 1, and its end is connected to the adjustment end 12.
That is. A worm wheel 13 is fixed to the adjustment end 12, and a worm 14, for example, is disposed horizontally above the worm wheel 13 in correspondence with the worm wheel 13. A relay worm wheel 15 is further provided at the shaft end of the worm 14, and a relay worm 16 is engaged with the relay worm wheel 15. Then, the shaft 17 of the relay worm 16 is pulled out upward, and this is connected to the relay shaft 19 via the universal joint 18. This relay shaft 19 is routed slightly diagonally upward, and is further connected to an operating shaft 21 via a universal joint 20 at its upper end. This operating shaft 21 rotates above the frame, and its tip extends to the upper end surface of the frame. An adjustment dial 22 is attached to the front end of the operating shaft 21. In this embodiment, the adjustment dial 22 may be a dial with an indicator 23 for indicating the number of revolutions. It is preferable that the same indicator scale be placed symmetrically on the left and right sides. In this case, the number of rotations for clockwise and counterclockwise rotations will be displayed, which will contribute to improving work efficiency. .

The present invention has such a configuration,
To carry out normal cutting action, crank 6 in the usual manner.
The connecting rod 7 is operated to draw the blade holder 3 downward.
In such a configuration, the attachment position of the blade 4 can be adjusted as follows. Of course, the purpose of adjusting the position of the blade is to avoid leaving uncut portions during cutting, so it is sufficient to set the blade so that it is parallel to the table 2 at least when it reaches the bottom dead center. There is no problem even if it is slightly slanted along the way. In fact, the blade is not simply descending diagonally,
Initially, the blade is tilted somewhat as it swings, and as it approaches the bottom dead center, the tilt becomes gentler. Incidentally, in order to achieve this, the inclination angles of the pair of left and right slits mentioned above are made different on the left and right sides. The blade holder is then manually positioned at the bottom dead center, and the dial 22 is rotated so that the blade contacts the table surface over its entire range. According to such rotation, the rotation is from the operating shaft 21 to the universal joint 20 to the relay shaft 1.
9, transmitted to the shaft 17 of the relay worm via the universal joint 18. The rotation of the relay worm 16 is transmitted to the relay worm wheel 15 while being decelerated, and the rotation is further transmitted as rotation to the worm 14 integrated with the relay worm wheel 15. This rotation of the worm 14 then causes the worm wheel 13 to rotate, which causes the eccentric shaft 10 to rotate somewhat. In such a case, the working end 11 of the eccentric shaft 10 moves either up or down, and the block 8 fitted therewith moves.
The position (height) of the image is changed. In such a case, the regulation position by block 8 will shift,
The block 8 shifts the blade holder 3 either up or down.

As described above, according to the present invention, since the eccentric shaft can be adjusted at the front of the device, there is no need to go to the rear of the device each time the blade position is adjusted, improving work efficiency. This is a marked improvement. Furthermore, since a worm wheel mechanism is used, the rotation is sufficiently slowed down, and adjustments can be made with extremely light force. In addition, a feature of the worm gear mechanism is that the worm does not rotate even if rotational torque from the worm wheel side is applied to the worm side, so there is no need to lock the eccentric shaft again when it is set at the desired position. However, it has excellent workability.

In addition, in the embodiment described above, the worm gear mechanism is set in two stages between the eccentric shaft and the adjustment dial to reduce the speed, but the setting is not necessarily limited to two stages. There is no problem even if it is just a one-step deceleration rather than a full-scale reduction. In addition, although the configuration is such that the rotation is transmitted from the worm shaft to the operation shaft on the operation dial side via two universal joints, an appropriate mechanism such as a flexible shaft or level gear mechanism that can transmit the rotation while changing the direction is used. There is no problem in adopting the .

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an example of a cutting machine to which the present invention is applied, FIG. 2 is a front view of the same, and FIG. 3 is a side view showing the eccentric shaft portion of the blade position adjustment device of the present invention. FIG. 4 is a partially exploded perspective view of the same as above. 1; Frame, 2; Table, 3; Blade holder, 4; Blade, 5; Slit, 10; Eccentric shaft, 11; Working end, 12; Adjustment end, 13; Worm wheel, 14; Worm, 21; Operation shaft ,2
2; Adjustment dial.

Claims (1)

[Scope of utility model registration request] The blade holder of the guillotine type cutting machine is
The block is fitted into a block protruding from the frame in a slit on its back surface, and is guided by the block to set an upward and downward locus, and the block is configured so that its protruding position with respect to the frame is adjusted by an eccentric shaft mechanism. In this device, a worm wheel is attached to the adjustment end of the eccentric shaft, a worm is engaged with the worm wheel, an operating shaft is directly or indirectly connected to the worm shaft, and the tip of the operating shaft is pulled out to the front of the device. A device for adjusting the position of a blade in a cutting machine, characterized in that an adjustment dial is attached to the end.