JPH052525Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a crank type paper folding knife device for a paper folding machine.

Conventional devices of this kind are devices that cannot independently adjust the vertical position of the knife shaft, regardless of the vertical movement of the paper folding knife.In the case of vertical adjustment of the knife shaft, the vertical adjustment of the entire knife device itself is not possible. We must do this. Therefore, it is impossible to arrange the knife device main body and the drive device for a single plate, and the entire device cannot be integrated into a unit, so a large installation space is required and the entire mechanism becomes large. In addition, the adjustment of the entire knife device up and down is troublesome, labor-saving, and inconvenient, and the fine adjustment of the knife position lacks accuracy and speed. There are lever operating mechanisms driven by cams,
This is due to the high-speed vertical movement of the lever, which tends to cause wear and play in the lever and the lever support member, and as a result, the knife vertical speed may become slightly off, and the lever drive mechanism related to cam rotation becomes complicated and long. The noise of the cam rotation and the noise of the lever and the lever support member rubbing against each other are extremely large, and the lever movement tends to be slightly distorted due to cam wear, resulting in instability such as the risk of inaccurate knife positioning. There is.

Therefore, the present invention is intended to reliably eliminate the above-mentioned drawbacks of the conventional method.The knife device main body and the drive device are separated from each other by installing a transmission belt on a single plate, and the entire device can be made into a compact unit. By realizing this, the mechanism can be made smaller, simpler, and more economical, and in a small crank-type unit device, the knife device can be easily operated without moving the knife device itself and regardless of the vertical movement of the knife crank. Easy, independent vertical fine adjustment of just the knife axis.
A unit-type crank that can be made quickly and accurately, making handling labor-saving and convenient, and without worrying about mechanical parts being worn out.Therefore, there is no deviation in the vertical speed of the knife, ensuring long-term stability. The object of the present invention is to provide a paper folding knife device.

An embodiment of the present invention will be described with reference to the drawings. A rectangular single plate 1 has an electric crank type knife device main body a in which a paper folding knife mechanism moves up and down by an electric crank mechanism at the lower part of one side. , a drive motor device b for driving the main body a is separated from the other proximate upper part thereof, and pulleys 4 and 5 are pivotally attached to mutual rotation shafts 2 and 3 of the crank mechanism and the motor, The pulleys 4 and 5 are arranged and fixed so as to face each other on the outside of the plate 1, and a transmission belt 6 made of rubber or resin is spanned over the pulleys 4 and 5 arranged oppositely. As an example of the configuration of the electric crank type knife device main body a,
7 is an electric clutch, a brake mechanism, 8 is a rotating shaft 2
It is a case of the main body A member equipped with the brake mechanism 7 so as to protrude into the inside, and a suitable window hole 9 suitable for monitoring and repairing the case is provided on the front side, and a crank mechanism is installed inside. provided. In the crank mechanism, an eccentric plate 10 is fixed to a rotating shaft 2, one end of a crank rod 11 is pivotally attached to it by a screw 12, and a crank pin 13 is pivotally attached to the other end. Then, connect the inner periphery of the upper opening to the cap screw part 1.
4 and the opposite upper and lower through holes 15 and 16 of the case 8
A knife shaft 18 is a bottomed cylindrical knife shaft with a paper folding knife 17 attached to the lower end with a required length passing through the shaft, and a coil spring or other suitable elastic member is installed in the deep bottom of the cylindrical hole 19 of the shaft 18. 20 is inserted, and an idle core rod 21 of a length that reaches the threaded portion 14 that slides in the cylinder is loosely fitted thereon, and the crank pin 13 is inserted into the lower part of the core rod 21.
A long hole 22 with a corresponding range in the wall of the knife shaft 18 corresponding to
The knife shaft 18 is inserted vertically into the through holes 15 and 16 of the case 8, and the lower surface is in contact with the threaded portion 14 above the shaft 18. The adjustment screw 24 fitted with the handle knob 23 that is in contact with the core rod 21 and screwed onto the threaded portion 14 with the upper part exposed outside the cylinder is inserted into the idler core rod 2.
1 until it abuts on the knife shaft 18, and a locking nut 25 is screwed onto the exposed threaded portion of the screw 24 toward the upper edge of the knife shaft 18. In the drawings, the main body a and the motor device b are arranged vertically with respect to the single plate 1, but if the plate 1 is used horizontally, the arrangement becomes horizontally horizontal. In the figure, M is a motor and RR' is a paper folding roller.

Since the present invention has the above-mentioned configuration, when the pulley 5 is rotated by the rotation of the motor M, the pulley 4 of the main body a is transmitted and rotated by the transmission belt 6, the rotating shaft 2 is rotated, and as the eccentric plate 10 is rotated, the crank is rotated. The crank movement of the rod 11 is performed, and the crank pin 13
As the knife shaft 18 moves up and down, the paper folding roller
It moves up and down with respect to RR'.

This crank up and down movement of the knife shaft 18 is caused by the crank up and down movement of the crank pin 13.
An idle core rod 21 is formed in the long hole 22 of the shaft 18 and is loosely fitted into the cylinder of the shaft 18 and supported by the pin 13.
slides up and down inside the cylinder under the elasticity of the elastic member 20, and its upward movement pushes up the upper adjusting screw 24 that is in contact with it.
The knife shaft 18 screwed onto the screw 24 is pushed up together with the screw 24, and the paper folding knife 17
moves upward, and conversely, its downward movement occurs because the lower surface of the core rod 21 presses the elastic member 20, and the entire shaft 18 simultaneously descends due to the pressed spring pressure.
8, the knife paper folding operation is performed by moving the crank up and down.

Next, to adjust the knife position, loosen the fixing nut 25, turn the handle knob 23, and tighten the adjustment screw 24.
When the knife shaft 18 is screwed into the cap screw 14, the knife shaft 18, which is screwed into the cap screw 14, moves up and down about the core rod 21 as the elastic member 20 expands and contracts as the screw 24 rotates. The height of the knife position can be easily, quickly and precisely finely adjusted independently of the crank movement of the knife shaft 18, and then the fixing nut 25 is tightened and fixed.

As a result, in the crank-type paper folding knife device, the present invention allows only the knife shaft 18 to be made independent by a simple screw rotation operation, without moving the entire main body a and regardless of the vertical movement of the knife crank. It is very convenient to be able to make fine adjustments simply, quickly and accurately, and because the mechanism allows only the knife shaft 18 to be adjusted independently, the main body a and the motor device b
A belt drive unit can be equipped for the single plate 1, and its unitization greatly reduces the installation space of the entire mechanism, realizing a compact unit of the entire knife device.
The overall mechanism is simple and easy to manufacture, making it economical.The simplicity and economy of the mechanism make it highly practical and in demand, and it is labor-saving.Also, the main body of the electric crank knife device A is because there is no fear of wear on the mechanical members, so there is no deviation in the vertical speed of the knife, and because it is an electric crank pin mechanism,
Compared to the conventional lever drive mechanism, the mechanism is not complicated and long, and the drive noise mentioned above does not occur, and the crank pin movement ensures long-term use and stability, and the knife can be precisely adjusted. With these features, it is possible to provide a high-performance unit-type crank paper folding device.

[Brief explanation of the drawing]

The drawings show an example of the implementation of the present invention; FIG. 1 is a front view with a part of the knife section omitted, and FIG. 2 is a right sectional view showing the main part longitudinally. 1... Single plate, 2, 3... Rotating shaft, 6...
...Transmission belt, a...Electric crank knife device main body, b...Drive motor device, 8...Case, 1
4... Cap screw part, 15, 16... Upper and lower through holes, 17... Paper folding knife, 18... Knife shaft, 2
0...Elastic member, 21...Idle core rod, 22...Elongated hole, 24...Adjustment screw, 25...Loosening fixing nut, 13...Crank pin.

Claims (1)

[Scope of utility model registration request] An electric crank type knife device main body a in which a paper folding knife mechanism moves up and down by an electric crank mechanism with respect to a single plate 1, and a drive motor device b are separated, and each rotation shaft 2 of the crank mechanism and motor is separated. A power transmission belt 6 is installed on the main body a, and the main body a is fixedly arranged in a unit shape so that the belt is indirectly driven. A paper folding knife 1 is attached to the lower end with a length that passes through the upper and lower through holes 15 and 16.
An elastic member 20 is inserted into the deep bottom of the cylindrical knife shaft 18 with a bottom attached to it, and an elastic member 20 is inserted into the deep bottom of the cylindrical hole 19 of the shaft 18, and an idle core rod 21 that slides inside the cylinder is mounted on the elastic member 20. Built-in play, crank pin 1
3 to the core rod 21 through a long hole 22 bored in the wall of the knife shaft 18 corresponding to the pin 13, and the shaft 18 is passed through the through holes 15, 16 vertically; For the threaded portion 14 above the shaft 18,
A belt drive unit type for a paper folding machine, which consists of screwing an adjusting screw 24 whose lower end abuts the core rod 21, and screwing a locking nut 25 onto the screw 24 toward the upper edge of the shaft 18. Paper folding knife device.