JPH0333729Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for precisely and easily adjusting the position of a paper folding knife, which is moved up and down by an electric mechanism in a knife paper folding machine, relative to a paper folding roller.

The conventional knife adjustment device that adjusts the required position of a paper folding knife with respect to the paper folding roller, which is moved up and down by an electric mechanism, is a complex mechanism, and the entire case equipped with a knife shaft can be moved by operating a position fixing screw. Since this is a device that moves up and down along a guide board and adjusts the height of the knife shaft by the up and down movement of the case, electric control is required each time to determine the knife position. Since the entire extremely heavy box to which the device is attached must be adjusted up and down one by one, handling operations are difficult.
The casing is heavy and cumbersome, and it is extremely labor-saving, and it is difficult to accurately and quickly finely adjust the vertical movement of the heavy casing along the guide board. In particular, in the case of an electric crank type knife device in which the knife shaft is electrically moved up and down, the casing is very heavy, making it inconvenient to adjust, and in the case of a lever that drives the knife shaft up and down. The high-speed vertical movement of the lever tends to cause fatigue and wear and play in the lever and the lever support member, which can cause slight deviations in the vertical speed of the knife, and the lever drive mechanism related to cam rotation.
As the mechanism becomes more complex and longer, the noise of the cam rotation and the noise of the lever and the lever support member rubbing against each other become very large, and the lever movement tends to be slightly distorted due to cam wear, making the knife adjustment position inaccurate. It has disadvantages such as instability.

The present invention reliably eliminates the drawbacks of the above-mentioned conventional devices, and also equips the upper part of the knife shaft with an adjustment screw mechanism in the electric crank type knife device.
To provide a convenient knife adjustment device that allows the vertical movement of only the knife axis to be independently and directly adjusted easily, quickly, and accurately without worrying about wear and play of knife device members without moving the entire case, and to improve the knife adjustment operation. The object of the present invention is to provide an economical knife paper folding machine that is quick and simple and labor-saving, and has a simple mechanism.

An embodiment of the present invention will be described below with reference to the drawings.

1 is an electric control mechanism, 2 is a rotating shaft of the control mechanism 1, and 3 is a case equipped with the control mechanism 1 so that the rotating shaft 2 protrudes into the inside, and on the front side there is a box for monitoring and repairing the inside of the case. A suitable aperture 4 is provided.

A crank mechanism is installed within the box for the electric rotating shaft 2 protruding into the box. That is, an eccentric plate 5 is fixed to the rotating shaft 2, and a screw 8, which pivotally connects one end of the crank rod 6 to the plate 5 via a bearing 7, is screwed to the plate 5, and the other end is fixed to the eccentric plate 5 via a bearing 9. The crank pin 10 is pivotally mounted. Then, screw the lower part of the required vertically long cylindrical collar 11 onto the threaded part of the pin 10, and attach the upper shaft part to the collar 11 with a length and shaft diameter that allows the upper part to slide through the inside of the collar 11. A threaded shaft portion 12 is formed into a rod portion 13, and a paper folding knife 14 is formed below the rod portion 13.
The rod portion 13 of the knife shaft 16, which has a thicker shaft portion than the rod portion 13 to which the mounting member 15 with the attached mounting member 15 is fixed by riveting to the lower end, is slidably attached to the cylindrical collar 1.
The upper part of the threaded shaft part 12 is projected from 1 and is fitted and supported, and there is an allowance diameter that corresponds to the thick shaft part of the shaft 16 and the collar 11 part which is bored in the upper and lower walls of the casing body 3 facing each other. For the upper and lower through holes 17 and 18, the collar 11 is inserted from the upper through hole 17 into the lower through hole 1.
8, the thick shaft portions are made to protrude through each with a margin,
The adjustment nut 19 is screwed onto the threaded shaft portion 12 of the protruding rod portion 13, and the collar 11 and the knife shaft 1 are screwed together.
A coil spring or other appropriate elastic member 20 is interposed between the two thick shaft portions on the outer periphery of the rod portion 13. In the figure, 21 and 21' are paper folding rollers, and S and S' are anti-rotation stopper mechanisms provided on both sides of the knife, which can be of any suitable design.

Since the present invention is configured as described above, the eccentric plate 5 is rotated by the electric power of the rotating shaft 2 of the electric control mechanism 1, and the pivoting screw 8 rotates in a circular orbit, so that the pivoting crank rod 6 is rotated. As the crank pin 10 moves up and down due to crank movement within the body 3, the cylindrical collar 11 fixed to the pin 10 moves into the upper through hole 1.
7, and this upward movement of the collar 11 is caused by the adjustment nut 1 in contact with the upper edge.
9 is pushed up, the rod portion 13 of the knife shaft 16 to which the nut 19 is screwed is also pushed up, and the shaft 16 is pushed up together with the collar 11 into the upper and lower through-holes 1.
7 and 18, and conversely, when the collar 11 is lowered, the lower edge of the lower collar presses the elastic member 20, so the spring pressure causes the shaft 1 to move upward.
6 is pressed down, and the shaft 16, together with the adjusting nut 19, moves directly downward with the downward movement of the collar 11, and as a result, the knife shaft is 1
The paper folding knife 6 is directly moved up and down, and the knife paper folding operation is performed by the vertical movement of the paper folding knife 14.

By the way, depending on the paper quality, paper thickness, etc., the paper folding roller 2
1, 21' can be changed or adjusted simply by rotating the adjustment nut 19 on the outside of the top surface of the case 3, making it extremely easy and quick to adjust the height of the knife accurately. Can be adjusted.

This is because when the nut 19 is rotated, the threaded shaft portion 12 of the rod portion 13 of the knife shaft 16 is screwed and slides inside the collar 11 to move up and down, and the paper folding knife 14 is prevented from rotating. Therefore, the knife shaft 16 is moved up and down by the screw movement of the adjusting nut 19 under the spring pressure of the elastic member 20, and the height of the knife is easily and quickly adjusted.

As a result, in the present invention, there is no need to move the entire case 3, and regardless of the vertical movement of the knife crank, only the knife shaft 16 itself can be independently and directly screwed to quickly and accurately adjust the height of the knife position. can be finely adjusted, and the vertical movement of the knife mechanism by the crank mechanism reduces the fatigue of mechanical members compared to the lever operation mechanism.
There is no fear of wear, so there is no deviation in the vertical speed of the knife. Furthermore, since it is an electric crank pin mechanism, the mechanism is not complicated and long compared to conventional lever drive mechanisms, and the drive noise mentioned above is also eliminated. The crank pin movement ensures long-term use and stability, and as a result of the independent operation of only the knife shaft 16, knife adjustment is very accurate and convenient, and the weight is lower than that of the conventional one. The overall mechanism is simpler than other devices that adjust the entire large box up and down.
Its handling operation is labor-saving and very convenient, and the simplification of the mechanism is advantageous for downsizing.
It is possible to provide a high-performance knife device that is simple in mechanism, economical, and allows knife adjustment to be performed simply, quickly, and accurately, and has effects such as being able to realize accurate knife paper folding work.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a front view, and FIG. 2 is a side sectional view taken along line A--B of the same. DESCRIPTION OF SYMBOLS 1... Electric control mechanism, 3... Case, 10... Crank pin, 11... Cylindrical collar, 12... Threaded shaft portion, 13... Rod portion, 14... Paper folding knife, 16... Knife Shaft, 17, 18... Upper and lower through holes, 19... Adjustment nut, 20... Elastic member.

Claims (1)

[Scope of utility model registration request] An electric crank mechanism rotated by an electric control mechanism 1 is provided in the case 3, and a required vertically long cylindrical collar 11 is fixed upright to the crank pin 10,
The upper part of the collar 11 is a rod part 13 having a length and shaft diameter that allows it to slide through the inside of the collar 11, and the upper shaft part is a threaded shaft part 12, and a paper folding knife 14 is attached to the lower end of the rod part 13. The rod portion 1 of the knife shaft 16 is thicker than the rod portion 13.
3, the upper part of the threaded shaft part 12 protrudes from the collar 11 and is fitted and supported, and the corresponding part of the collar 11 is inserted through upper and lower through holes 17 and 18 formed oppositely in the upper and lower walls of the casing body 3. The thick shaft portion of the shaft 16 is allowed to protrude through the shaft 16 with a margin, and the adjustment nut 19 is screwed onto the threaded shaft portion 12 of the protruding rod portion 13, so that the adjustment nut 19 is inserted between the collar 11 and the thick shaft portion of the shaft 16. This knife adjustment device for a knife paper folding machine is provided with an elastic member 20 interposed therein.