JP2866146B2 - Plate discharge compression device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plate discharging compression device attached to an automatic plate discharging device of a rotary stencil printing machine.

Conventional technology and its problems In a stencil printing machine, the task of manually removing used base paper from the screen of a rotating drum is extremely disliked because the hands and clothes become dirty with ink due to the handling of base paper covered with ink. It was work.

On the other hand, it is conceivable that the plate discharging operation is to be performed automatically. In most cases, one end of the base paper 3 peeled off from the rotary drum 1 by the plate discharging claw 2 is rotated by a motor as shown in FIG. This is a method in which the sheet is sandwiched between a pair of plate discharging rollers 4, sent to a plate discharging box 5 behind through a guide plate 6, and discharged. Then, in this automatic discharge, the removed base paper 3
Are not discarded each time, but are compressed by the compression plate 7 in the plate discharge box 5, and are discarded after being collected to some extent.

Conventionally known as a plate discharge compression device using the compression plate 7 is as shown in FIGS. In this compressor, when the drive motor 10 is driven, the gears 11 and 12 rotate in the direction of the arrow, and the gear 14 meshing with the gear 13 concentric with the gear 12 rotates in the opposite direction, and is attached to the gear 14. When the arm pin 15 is rotated clockwise, the arm 17 engaged with the pin via the long groove 16 is swung about the support shaft 18. By the swing of the arm 17, the compression plate 7 is moved up and down with the receiving members 20 provided at both ends of the compression plate 7 being supported by the distal end of the arm 17. Reference numeral 21 denotes a tension spring, one end of which is fixed to pins 23 provided on both side plates of the unit body 22 on which the plate discharge box 5 is installed, and the other end of which is provided on a pin 24 provided on the receiving member 20.
When the arm 17 swings downward, the compressive plate 7 is moved downward by the pulling force to perform the compressing action. In the above description, the receiving members 20 are provided at both ends of the compression plate 7 via the compression plate shaft 26. In other words, the compression plate shafts 26 are provided with the elongated slots 27 for guide provided on both side plates of the plate discharge box 5 and the unit body 22. And projecting outward through a guide elongated hole 28 provided in both end plates, and a receiving member 20 is provided on the projected shaft portion.

By the way, in the above-described compression device, one end of the spring 21 is fixed to the pin 23 of the unit main body 22 and the other end is fixed to the pin 24 of the receiving member 20. The compression force acting on the base paper 3 of the plate becomes a state in which the spring 21 is not stretched at all, and it is hardly compressed. In other words, if the base paper 3 of the first plate should be sufficiently compressed, more base paper can be stored in a small space. The amount is reduced. That's why the spring
When the spring constant of 21 is increased, the compressive force increases, but the load on the motor 10 increases. In fact, the motor
Driving the arm 17 by 10 merely moves the compression plate 7 up to the upper limit position (home position) shown by the dashed line in FIG. 7, and the compression plate 7 is in the home position. As a result, the spring 21 is fully extended, so that the force of the spring 21 pulling the compression plate 7 is maximized, and the load on the motor 10 is increased.
However, there are various problems that the cost increases when trying to obtain a large output.

On the other hand, as another method, for example, a large cardboard box is placed below the printing press body and stored there,
Some of them are wound around the cylindrical core one after another inside the printer body. In the former case, a long path to the bottom of the machine is provided, and the base paper peeled from the rotary drum is lightly compressed and dropped in the path.However, troubles such as jamming in the middle are likely to occur. There is also a problem such as stinking because it will be stored for a long time in a large cardboard box. In the latter case, too, a large amount of base paper cannot be stored because it is stored in a limited place inside the main body. In recent years, the demand for stencil printing machines has increased, and the use of ordinary office machines has increased, the use of women has increased, and the use of stencil printing machines has increased in the sense of PPC. However, recently, the use of less than 100 sheets has increased, and a stencil printing machine has also been used for printing 20 to 30 sheets. In such a situation, in the case of a printing machine that makes one base paper per one manuscript, the amount of base paper used per day increases and the amount of plate discharge increases, but the size of the stencil printing machine becomes smaller and the plate discharge box becomes smaller. Because
1 when the storage amount of the base paper is small and therefore the usage amount is large.
Many times a day, the stencils must be removed from the machine and discarded.

Therefore, the present invention solves the above-mentioned problems of the prior art, and a sufficient compressive force can be obtained even when compressing the first plate of base paper from an empty plate discharge box, thereby efficiently compressing the base paper into the plate discharge box. A plate discharge compression device which can store the plate discharge box in a small amount as in the related art, and can reliably remove the plate discharge box frequently and discard the base paper in the day. The purpose is to do.

Means for Solving the Problems In order to achieve the above object, the present invention provides a plate discharging compression device as described above, wherein a rotating body is provided on receiving members provided at both ends of the compression plate, and the rotating body has one end. Is fixed at a position below the lower limit position of the compression plate, and the other end is wound around a cable or the like fixed to the arm. The cord has a length that allows the compression plate to move between the upper limit position and the lower limit position due to the swing of the arm, and faces downward to the outer compression plate when the compression plate reaches the lower limit position. To provide a tensile force.

A pulley is preferable as the rotating body, and a wire is preferable as the cord.

In the above configuration, a biasing member such as a spring may be provided at one end of the cord.

When the used base paper is discharged into the plate discharge box, the compression plate at the upper limit position is moved down by the arm swinging downward so as to be pulled by the cord, and the base paper stored in the plate discharge box. Compress. At this time, even when the compression plate is at the lower limit position, the cord body applies a downward tensile force to the compression plate, so that the first stencil can be sufficiently compressed. After compression, the compression plate is moved upward while the receiving member is supported and held by the arm that swings upward, and is again brought back to the upper limit position. In this way, the second and subsequent plates are sequentially compressed and stored.

Embodiment FIGS. 1 to 5 show an embodiment of the present invention, and FIG. 1 shows a state in which a base paper 3 is filled in a plate discharge box 5 and compressed.
FIG. 2 is a perspective view of the entirety in which the driving unit at that time is omitted, FIG. 3 is a partially omitted perspective view of the plate discharge box 5, FIG. 4 is a state in which the compression plate 7 is at the home position, and FIG. The state where the compression plate 7 is at the lower limit position is shown.

In this embodiment, the same parts as those shown in FIGS. 7 and 8 are denoted by the same reference numerals, detailed description thereof will be omitted, and different parts will be mainly described below.

Reference numerals 31 denote receiving members provided on both end shaft portions of the compression plate shaft 26 protruding from the elongated holes 23 of the unit body 22, and also function as a switch operation plate as described later. A pulley as a rotating body is provided at both end shaft portions of the compression plate shaft 26 protruding to the surface of the receiving member 31.
32 is installed. This pulley 32 has a spring at one end
A spring wire 35 connected in series with one end 33 is wound with one end of the spring 33 fixed to a position below the lower limit position of the compression plate 7 in the unit body 22. The other end of the spring wire 35 is fixed to the tip of the arm 17. The spring wire 35 is in a state where the spring 33 is slightly extended when the compression plate 7 reaches the lower limit position, so that a downward tensile force can be applied to the compression plate 7. Spring 33 of spring wire 35
Other wire portions have a fixed length. 36 is a pulley
When the spring wire 35 is wound around 32, the receiving member 31
A notch for eliminating buffering to the lower end of the receiving member 31.

37 is a home position switch and 38 is a full switch. When the compression plate 7 moves up and down, it is turned on by an operation projection 39 provided on the receiving member 31 also serving as a switch operation plate.
By the ON / OFF operation, the home position of the compression plate 7 and the full state of the base paper 3 in the plate discharge box 5 can be detected. 41 is a lower limit position switch,
The compression plate 7 is turned on by the arm 17 and is turned on by this ON operation.
The lower limit position can be detected.

 Next, the operation of this embodiment will be described.

The compression plate 7 is normally at the home position as shown in FIG. 4 and is stopped so as not to hinder the storage of the base paper 3 discharged into the plate discharge box 5.

When the first stencil 3 is discharged into the stencil box 5, the motor
10 is driven. As a result, the arm pin 15 is rotated clockwise by the gear mechanism as in the conventional case, so that the arm 17 is rotated.
Is swung downward. When the arm 17 starts swinging, the compression plate 7 is moved downward so as to be pulled by the spring wire 35, thereby compressing the first stencil sheet. At this time, after the full switch 38 is turned on by the operating projection 39, the lower limit position switch 41 is turned on by the arm 17, and the lower limit position shown in FIG. 5 is reached. When the lower limit switch 41 is turned ON, the drive of the motor 10
Stopped for 30 seconds. This is for sufficient compression over time. After compression in this manner, the motor 10
Is driven to swing the arm 17 upward. Then, the rocking member hinders the receiving member 31 at the distal end of the arm 17 to move the compression plate 7 upward, and sequentially turns on the full switch 38 and the home position switch 37 to return to the original home position shown in FIG. Return to

This completes one cycle of the compressing operation of the first stencil 3, and the second and subsequent stencils are similarly compressed.

In the above, the spring 33 is slightly extended even at the lower limit position of the compression plate 7 so that the spring 33 can be compressed by the compression plate 7 even at the lower limit position. It will be in a fully extended state.

When the plate discharge is advanced and the inside of the plate discharge box 5 becomes full, as shown in FIG. 1, the full switch 38 is not turned on even when the lower limit position switch 41 of the arm 17 is turned on. In this way, the full switch 38 is not turned on,
When the full state is detected in the OFF state, for example, a display indicating that the discharge box is full is lit on an operation panel or the like, and an instruction is given to the operator. Also, the lower limit position switch 41 can be turned ON without being able to turn on the full switch 38 when full. Spring wire 35 to turn on
This is because the structure of the spring 33 allows the force of the arm 17 to escape, and if the wire only has no spring 33, the load of the motor 10 is detected and the role of the spring escape Need to be done.

Effect of the Invention In the invention according to claim 1, because of the above-described configuration, sufficient compression can be achieved even when the first platen original is compressed from an empty state of the plate discharge box, The base paper can be efficiently compressed and stored in the plate discharge box, and the storage amount of the plate discharge can be increased. And swing the arm,
For example, even if the load on the motor as the driving member is small, a sufficient compressive force can be realized easily and at low cost.

According to the second aspect of the present invention, in addition to the above effects, the urging member extends as the base paper is stored in the plate discharge box, so that a stronger compressive force is obtained, and the compression efficiency is further increased. .

[Brief description of the drawings]

FIG. 1 is a vertical sectional front view of a full state showing one embodiment of the present invention, FIG.
Fig. 4 is a perspective view of the same plate discharge box with a part omitted, Fig. 4 is a vertical sectional front view showing a state where the compression plate is at a home position, and Fig. 5 is a vertical sectional front view showing a state where the compression plate is at a lower limit position. 6, FIG. 6 is a schematic front sectional view showing a conventional automatic plate discharging device, FIG. 7 is a longitudinal sectional front view showing a conventional plate discharging compression device, and FIG. 8 is an overall perspective view omitting a driving unit of the same. DESCRIPTION OF SYMBOLS 1 ... Rotary drum, 2 ... Plate discharge claw 3 ... Base paper 5, 5 ... Plate discharge box 7 ... Compression plate, 10 ... Drive motor 22 ... Unit body, 31 ... Receiving member 32 ... Pulley, 33 ... … Spring 35 …… Spring wire

Claims (2)

(57) [Claims] 1. A discharge plate box for storing used base paper which is peeled off from a rotary drum by a peeling member and discharged by a pair of rollers which press against each other, and a compression plate for compressing the base paper in the plate discharge box. Are movably arranged up and down,
Receiving members are provided at both ends of the compression plate, and an arm for supporting the receiving member and holding the compression plate is swingably provided in the moving direction of the compression plate. A rotatable body such as a wire, one end of which is fixed at a position below the lower limit position of the compression plate and the other end of which is fixed to the arm, is wound around the rotating body; Has a length such that the compression plate can be moved between the upper limit position and the lower limit position by swinging the arm, and when the compression plate reaches the lower limit position, a downward tension is applied to the compression plate. A plate discharging / compressing device characterized by applying a force. 2. The plate discharging compression device according to claim 1, wherein a biasing member such as a spun ring is provided at one end of the cord.