JP3515844B2 - Stencil printing machine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plate discharge device for a stencil printing machine.

[0002]

2. Description of the Related Art FIG. 13 shows a conventional stencil printing machine. In the figure, the stencil printing apparatus 50 includes a printing unit 5
1, plate making unit 52, paper feeding unit 53, plate discharging unit 54, paper discharging unit 55
It is mainly composed of.

The operation of the stencil printing machine 50 will be briefly described below. The document image read by the image reading device 56 of the plate making unit 52 is made into a plate by the master 58 by the plate making unit 57. Plate-mastered master 58 on which the plate-making image is formed
Is conveyed by the conveying means 59, and the plate cylinder 6 of the printing section 51 is conveyed.
It is wound on the outer peripheral surface of 0.

In parallel with the plate making operation for the master 58, the plate discharging section 54 performs the plate discharging operation. The used master 61 of the previous plate wound on the outer peripheral surface of the plate cylinder 60 is
The lower plate discharge roller 62 of the plate discharge unit 54 is separated from the outer peripheral surface of the plate cylinder 60 by rotating in the counterclockwise direction and swinging and contacting with the position of the chain double-dashed line in the figure. The separated used master 61 is sandwiched and conveyed by the lower plate discharge roller 62 and the upper plate discharge roller 63, and is stored inside the plate discharge box 64 of the plate discharge unit 54.

A master 5 made on the outer peripheral surface of the plate cylinder 60.
When 8 is wound and a plate making command is output, one sheet of printing paper P is fed from the paper feeding portion 53 to the registration roller pair 65. The printing paper P temporarily retained by the pair of registration rollers 65 is pressed at a certain timing, and then the press roller 66 and the printing drum 60 that perform a contact / separation operation with respect to the outer peripheral surface of the printing drum 60.
It will be sent between and.

On the printing paper P pressed against the outer peripheral surface of the plate cylinder 60 by the press roller 66, the ink supplied from the ink supply means 67 provided inside the plate cylinder 60 is
The print image is formed by being transferred through the apertures of the plate cylinder 60 and the perforations of the master 58. The printed printing paper P on which the print image is formed is peeled from the outer peripheral surface of the plate cylinder 60 by the peeling claw 68 of the paper discharging unit 55, and is discharged to the outside of the machine by the paper discharging unit 69, and the paper discharging tray 70. Loaded on top.

[0007]

During the above operation, when the used master 61 peeled in the plate discharging operation fills the inside of the plate discharging box 64, the operator opens the side portion of the casing of the stencil printing machine 50 to open the plate discharging box. The used master 61 is discarded by pulling out 64 to the position of the chain double-dashed line in the figure. At this time, part of the used master 61 is exposed from the plate discharge box 64 because the plate discharge box 64 is pulled out while the used master 61 is sandwiched between the lower plate discharge roller 62 and the upper plate discharge roller 63. If the plate discharge box 64 is pulled out in this state, there is a problem in that the operator's hands and clothes are stained with the ink attached to the used master 61.

Further, when a sorter is connected instead of the paper discharge tray 70 to perform divided printing, the housing side portion is opened and the plate discharge box 64 is pulled out to the side. Therefore, the housing side portion is opened. The sorter must be connected in a state in which a space for securing the space is secured, and the intermediate conveying means needs to be arranged between the housing and the sorter, which increases the cost and increases the installation space of the stencil printing apparatus. There is a problem that it ends up.

An object of the present invention is to provide a plate discharge device for a stencil printing machine which solves the above-mentioned problems, prevents ink from being deposited by a used master, and can reduce the installation space and cost. To do.

[0010]

The invention according to claim 1 is
A stencil comprising a pair of fine cutting rollers, which conveys a used master and conveys the used master, and a stencil box which accommodates the used master conveyed by the stencil conveying means and is detachable from the stencil printer main body. In the plate discharge device of a printing apparatus, the plate discharge box has a rotatable upper guide plate and a lower guide plate that guide the conveyance of the used master into the plate discharge box, and the upper guide plate and the lower guide plate. The lower guide plate is characterized in that each free end selectively occupies a first position where the free ends enter between the corresponding shredding rollers and a second position where the free ends separate from the shredding rollers and overlap with each other. To do.

According to a second aspect of the present invention, in the plate discharge device of the stencil printing device according to the first aspect, the plate discharge box is in a front direction of the stencil printing device main body, which is orthogonal to a conveying direction of the used master. It is characterized by being attached to and detached from.

According to a third aspect of the present invention, in the plate discharge apparatus of the stencil printing apparatus according to the first or second aspect, the movement of rotating each of the guide plates from the first position to the second position is further performed. The feature is that the other operates after the operation of one.

According to a fourth aspect of the present invention, in the plate discharge apparatus of the stencil printing apparatus according to the first, second or third aspect, the plate discharge box further has a grip portion, and the grip portion is gripped. By doing so, the pivoting operation of each of the guide plates from the first position to the second position is performed.

According to a fifth aspect of the present invention, in the plate discharging apparatus of the stencil printing apparatus according to the fourth aspect, further, a holding member that holds each of the guide plates at the second position when the holding portion is held. And when the stencil discharge box is mounted on the stencil printing machine main body while the guide plates are held at the second position, the holding state of the guide plates is released to move the guide plates to the first position. And a release member which is positioned at position 1.

According to a sixth aspect of the present invention, in the plate discharge apparatus of the stencil printing apparatus according to the first, second or third aspect, the stencil printing apparatus main body further includes a guide for rotating each of the guide plates. It is characterized by comprising plate driving means.

According to a seventh aspect of the present invention, in the plate discharging apparatus of the stencil printing apparatus according to the sixth aspect, further, the stencil printing apparatus main body has a cover that opens and closes when the stencil discharging box is attached and detached, and the cover. The guide plate drive means is operated by the opening / closing operation of.

[0017]

1 is a schematic side sectional view of a plate discharge device of a stencil printing machine adopting a first embodiment of the present invention. In the figure, a plate discharge unit 2 as a plate discharge device is disposed on the left side of the plate cylinder 1 of the stencil printing machine. The plate discharge unit 2 includes an upper plate discharge roller 3 and a lower plate discharge roller 4 as plate discharge conveying means.
And the plate discharge box 5 and the like.

The upper plate-discharging roller 3 and the lower plate-discharging roller 4 are composed of finely divided rollers having the same diameter.
a and 4a, respectively. The support shaft 3a is shown in FIG.
As shown in FIG. 5, the support arm 7 is rotatably supported by the side plate 6a of the housing 6 of the stencil printing machine, and the support shaft 4a is a support arm 7, 7 whose base end is supported by the support shaft 3a in a swingable manner. The ends are rotatably supported at both ends. Top plate discharge roller 3
The lower plate discharge roller 4 and the lower plate discharge roller 4 are arranged in a state where their outer peripheral surfaces are in slight pressure contact with each other. A drive means (not shown) for rotationally driving the upper plate discharge roller 3 is connected to one end of the support shaft 3a. Further, the support shaft 3a and the support shaft 4a are connected by a driving force transmitting means (not shown), and the driving force from the driving means (not shown) is also transmitted to the supporting shaft 4a. Further, in the vicinity of the support arm 7, a swing means (not shown) for swinging the support arm 7 around the support shaft 3a is arranged. By operating this swinging means,
The lower plate discharge roller 4 is selectively positioned at a solid line position in which the outer peripheral surface is separated from the outer peripheral surface of the plate cylinder 1 and a two-dot chain line position in which the outer peripheral surface is in contact with the outer peripheral surface of the plate cylinder 1. .

The plate discharge box 5 is mounted in the space 6b of the housing 6 located to the left of the plate discharge rollers 3 and 4 from the front side of the paper surface of FIG. The plate discharge box 5 is mainly composed of a main body 5a, a lid 5b, an upper guide plate 8, a lower guide plate 9, and the like.

As shown in FIG. 3, a lid 5b is rotatably attached by a hinge 10 to the left side surface of the main body 5a. A handle (not shown) is formed on the lid 5b, and the plate discharge box 5 can be opened by gripping the handle and rotating the lid 5b counterclockwise. There is.

An opening 5c is formed on the right side surface of the main body 5a which faces the lid 5b. The opening portion 5c is formed above the central portion of the main body 5a, and when the plate discharge box 5 is mounted in the space 6b, the pressure contact portions of the plate discharge rollers 3 and 4 are located substantially in the center thereof. Body 5
It is formed over substantially the entire width of a.

An upper guide plate 8 and a lower guide plate 9 are arranged inside the main body 5a. The guide plates 8 and 9 are fixed to the support shafts 8a and 9a, and the support shafts 8a and 9a are rotatably supported by the main body 5a. As shown in FIG. 2, each of the guide plates 8 and 9 has a comb blade shape of the same shape (only the lower guide plate 9 is shown in FIG. 2), and each convex portion which is a free end of each of the guide plates 8 and 9. 8b (see FIG. 4), 9b
Is formed so as to enter between the plate discharge rollers 3 and 4 when the guide plates 8 and 9 are positioned at the open position described later. Further, as shown in FIG. 4, a mountain-shaped projection 9c integrally formed with the lower guide plate 9 is provided near the end of the lower guide plate 9 on the front side of the paper surface in FIG. The protrusions 9c deviate from the transport path of the used master transported by each of the plate discharge rollers 3 and 4 when the plate discharge box 5 is set in the housing 6 and the lower guide plate 9 is positioned at the open position described later. It is provided in the position.

As shown in FIGS. 4 and 5, a grip portion 11 is provided on the side surface of the main body 5a on the front side of the paper surface in FIG. The grip 11 is mainly composed of a fixed handle 12 and a movable handle 13.

The U-shaped fixed handle 12 whose both ends are bent in an L-shape has its ends fixed to the side surface of the main body 5a.

The U-shaped movable handle 13 is a fixed handle 12.
Both ends are rotatably attached to the outside of the bent portion by means of pins 14. Opening 5 of movable handle 13
Inside the side wall on the c side, projecting pieces 15a and 15b projecting to the front side of the paper surface of FIG. 4 are integrally provided. Engagements 16a and 16b that are opposed to each other and project in the vertical direction are integrally provided on the respective projecting pieces 15a and 15b. As shown in FIG. 5, an engaging portion 13a protruding toward the main body 5a is integrally formed on the side wall of the movable handle 13 on the side of the lid 5b. Engaging part 13a
Has a notch at one corner at its tip, and is configured to be engageable with an operating piece 20 described later. Further, one end of a tension spring 17 having the other end fixed to the main body 5a is fixed to both side walls of the movable handle 13, and the movable handle 13 is centered on the pin 14 and is counterclockwise in FIG. A rotational biasing force in the rotating direction is applied.

One end of the support shaft 8a protruding from the side surface of the main body 5a on the side of the gripping portion 11 has a cylindrical shape, and the outer peripheral surface of the support shaft 8a has a cylindrical shape.
A solid cam 18 having a spiral groove of a book is fixed. The tips of the engaging elements 16a and 16b are engaged with the respective grooves of the three-dimensional cam 18. Further, on the support shaft 8a between the side surface of the main body 5a and one side portion of the upper guide plate 8, and the main body 5
On the support shaft 9a between the side surface of a and one side portion of the lower guide plate 9, the protrusions 5d, 5d having one end protruding from the side surface of the main body 5a.
And the torsion coils 19, 19 respectively locked to the projection 8c projecting from the upper guide plate 8 and the projection 9d projecting from the lower guide plate 9 at the other end. The respective guide plates 8 and 9 are oriented so that the tip end portions of the guide plates 8 and 9 are directed toward the inner side of the paper surface of FIG. Has been given the power of turning. The protrusions 8c and 9d are in contact with the side surface of the main body 5a near the opening 5c in a state where the guide plates 8 and 9 are placed at the open position shown in FIG. 4 (the position shown by the solid line in FIG. 1). The open position of each of the guide plates 8 and 9 is determined.

An operating piece 20 as a holding member is arranged outside the left side surface of the main body 5a. An operating piece 2 rotatably supported by a pin 21 at substantially the center thereof.
0 has an engaging portion 20a in the upper portion and a locking portion 20b in the lower portion. The engaging portion 20a having a fan-shaped outer shape has one corner cut out, and this notch engages with the notch of the engaging portion 13a. The locking portion 20b has an inverted J-shape, and a positioning pin 22 as a releasing member that is planted in the housing 6 can be fitted into the curved portion of the locking portion 20b. Also,
One end of a tension spring 23, the other end of which is fixed to the fixed handle 12, is fixed to the operating piece 20, and the operating piece 20 has a rotational biasing force around the pin 21 in the clockwise direction in the drawing. Is given.

The operation based on the above configuration will be described below. In the state where the plate discharge box 5 is set in the housing 6, the positioning pin 22 is engaged with the locking portion 20b,
The movable handle 13 is positioned at the position shown by the solid line in FIGS. 4 and 5 where the engaging portion 13a is engaged with the engaging portion 20a by the biasing force of the tension springs 17, 17. At this time,
The guide plates 8 and 9 are positioned at the open position shown by the solid line in FIG. 1 by the biasing force of the torsion coils 19 and 19. In this state, the used master conveyed by the plate discharge rollers 3 and 4 is guided by the guide plates 8 and 9 and reliably stored in the main body 5a.

When the inside of the main body 5a is filled with the stored used master, the operator removes the plate discharge box 5 from the housing 6, and the used master is discarded in a trash box or the like.

The operator grips the grip portion 11 and moves the movable handle 13 from the position shown by the solid line in FIGS. 4 and 5 to the position shown by the chain double-dashed line. As the movable handle 13 moves, the protruding pieces 15a and 15b and the engaging elements 16a and 16b are also moved to the positions shown by the chain double-dashed line in FIG. Each engaging element 16
When a and 16b move, the three-dimensional cam 18 having the tips of the engaging elements 16a and 16b engaged with the grooves on the outer peripheral surface moves upward in FIG. 4 (clockwise when FIG. 4 is viewed from the right). The support shaft 8a and the upper guide plate 8 which are rotated and integrated with the three-dimensional cam 18
Is also rotated in the same direction against the biasing force of the torsion coil 19.

The upper guide plate 8 is rotated from the open position as shown in FIG. 6, and eventually its tip comes into contact with the projection 9c. The upper guide plate 8 is further rotated even after the tip is brought into contact with the projection 9c, and the lower guide plate 9 is rotated in the counterclockwise direction as shown in FIG. . Then, when the movable handle 13 is moved to the position indicated by the chain double-dashed line in FIG. 4, the guide plates 8 and 9 are positioned in the closed position in which the tips of the guide plates 8 and 9 overlap each other, as shown in FIG.

Even if the rear end of the used master protrudes from the opening 5c to the outside of the main body 5a due to the rotation of the guide plates 8 and 9 from the open position to the closed position as described above. Since the guide plates 8 and 9 push the guide plates 8 and 9 into the main body 5a, it is possible to prevent the operator's hands, clothes, and the housing 6 from being contaminated by the ink attached to the used master.

On the other hand, in the operating piece 20, the movable handle 13 is shown in FIG.
Even if it is moved to the position indicated by the chain double-dashed line, since the positioning pin 22 is fitted in the locking portion 20b, it is positioned at the position shown in FIG. From the state shown in FIG. 5, if the movable handle 13 is positioned at the position indicated by the chain double-dashed line, and the plate discharge box 5 is removed from the housing 6 in the front direction (arrow direction in FIG. 9) orthogonal to the transport direction of the used master. The engagement between the locking portion 20b and the positioning pin 22 is gradually released, and the actuating piece 20 is rotated clockwise by the urging force of the tension spring 23, as shown in FIG. Then, when the operating piece 20 is rotated to a position where the biasing force of the tension spring 23 does not act, the engagement between the locking portion 20b and the positioning pin 22 is completely released. At this time, as shown in FIG.
The fan-shaped end of the engaging portion 20a contacts the lower end of the engaging portion 13a, and the movable handle 13 is held at the position shown in FIG.

The operator removes the plate discharge box 5 with the movable handle 13 held from the housing 6 to remove the lid 5
After opening b and discarding the used master in the plate discharge box 5, the plate discharge box 5 is attached to the housing 6 again. When the plate discharge box 5 is attached to or detached from the housing 6, the plate discharge box 5 is attached or detached in the front direction, so that the operator can perform the discarding work of the plate discharge while being positioned in front of the printing apparatus, and the plate discharge unit The sorter can be directly attached to the printing apparatus main body on the downstream side of 2 without providing an intermediate conveying apparatus, and the occupied space of the printing apparatus can be reduced.

The operator grips the fixed handle 12 and
The plate discharge box 5 is inserted into the space 6b. When the plate discharge box 5 is inserted, the positioning pin 22 and the operating piece 20 come into contact with each other, the positioning pin 22 is fitted into the locking portion 20b, and the movable handle 13 is moved to the position shown by solid lines in FIGS. 4 and 5. Be positioned at. With the positioning of the movable handle 13, the respective guide plates 8 and 9 are positioned at the open position, and the mounting of the plate discharge box 5 on the housing 6 is completed.

During the above-described operation, the operation of gripping the grip 11 and moving the movable handle 13 is performed a plurality of times, and the guide plates 8 and 9 are rotated a plurality of times so that the trailing end of the used master is removed from each plate. Even when it is sandwiched between the rollers 3 and 4, it can be housed in the main body 5a, and when the plate discharge box 5 is removed from the housing 6, the stains due to the ink attached to the used master are prevented. It can be prevented more reliably.

FIG. 11 shows a second embodiment of the present invention. Compared with the first embodiment, the second embodiment uses a plate discharge box 24 instead of the plate discharge box 5, and the side plate 6a has a motor 2 as a guide plate driving means.
A plurality of positioning members 3 are provided in the housing 6 in that 5, 26 are provided.
The difference is that 1 is provided. The members described in the first embodiment are given the same reference numerals,
Detailed description of each is omitted.

The plate discharge box 24 includes a main body 24a and a lid 5.
b, the upper guide plate 8, the lower guide plate 9, the handle 27 and the like.

A handle 27 is fixed to the right side surface of the main body 24a (side surface on the front side of the printer when the housing is set). Further, similarly to the main body 5a, a lid 5b (not shown) is rotatably attached to the front side surface of the main body 24a in the drawing. Further, in the figure, the main body 2
An opening 24c is formed on the inner side surface of 4a.

An upper guide plate 8 and a lower guide plate 9 are provided inside the main body 24a, and the support shafts 8a and 9a are rotatably supported by the main body 24a. Left ends of the support shafts 8a and 9a protrude from the main body 24a, a gear 28 is fixed to the tip of the support shaft 8a, and a gear 29 is fixed to the end of the support shaft 9a. There is.

On the support shaft 8a between the right side surface of the main body 24a and one side portion of the upper guide plate 8, and on the support shaft 9a between the right side surface of the main body 24a and one side portion of the lower guide plate 9. Is provided with torsion coils 30, 30 each having one end locked to a projection 24b, 24b protruding from the right side surface of the main body 24a and the other end respectively locked to a projection 8c and a projection 9d. When the guide plates 8 and 9 are viewed from the right side in FIG. 11 by the biasing force of the torsion coils 30 and 30, the upper guide plate 8 is rotated clockwise around the support shaft 8a.
The lower guide plate 9 is given a turning force in a counterclockwise direction about the support shaft 9a. In addition, each guide plate 8,
A protrusion 24d that protrudes from the right side surface of the main body 24a is arranged in the rotation locus of 9. The ends of the front guide plate (the upper guide plate 8 in this embodiment) come into contact with the protrusions 24d, so that the guide plates 8 and 9 are separated from each other by the plate discharge box 2.
It is configured to be positioned at the closed position shown in FIG. 11 when the housing 4 is removed from the housing 6.

Motors 25 and 26, which are stepping motors and pulse motors, are attached to the side plate 6a, and the pinion gear 3 is attached to the tip of the output shaft of the motor 25.
2 and a pinion gear 33 is fixed to the tip of the output shaft of the motor 26. Each motor 25,2
6 is operated by a switch (not shown)
Rotate in different directions, clockwise or counterclockwise, by the same predetermined angle. Each motor 2
When the plate discharge box 24 is set inside the housing 6, the motors 5 and 26 have the motor 25 at a position where the pinion gear 32 meshes with the gear 28 and the motor 26 at a position where the pinion gear 33 meshes with the gear 29. Each is installed.

A plurality of columnar positioning members 31 are embedded in the housing 6, and the position of the plate discharging box 24 with respect to the housing 6 is adjusted so that the positioning can be performed when the plate discharging box 24 is set in the housing 6. , Are arranged so that they are always constant in the front-rear direction and the left-right direction.

With the above construction, the plate discharge box 2 with the guide plates 8 and 9 positioned in the closed position.
After setting 4 in the housing 6, a switch (not shown) is operated to rotate the motor 25 in the clockwise direction and the motor 26 in the counterclockwise direction by a predetermined angle, thereby opening the guide plates 8 and 9. Be positioned in position.
When removing the plate discharge box 24 from the housing 6,
The motor 25 is rotated in the counterclockwise direction and the motor 26 is rotated in the clockwise direction by a predetermined angle. At this time, by providing a time difference between the operation timings of the motor 25 and the motor 26, the guide plates 8 and 9 can be rotated. Interference can be prevented.

FIG. 12 shows a modification of the second embodiment. This modification is different from the second embodiment in that a cover 34 is provided on the housing 6, limit switches 35 and 36 that are turned on / off by the opening / closing operation of the cover 34 are provided, and each limit switch 35. , 36 on the basis of signals from the motors 36, 36, except that a control means (not shown) for operating the motors 25, 26 is provided, and the other configurations are the same.

The cover 34 is the plate discharge box 2 of the housing 6.
4 is attached so as to cover the attachment / detachment portion, one end of which is fixed to the housing 6 by a hinge 37, and is provided so as to be openable / closable in the direction of the arrow in the figure.

The limit switches 35 and 36 are attached to the housing 6, and are configured so that their respective operating pieces are pushed when the cover 34 is closed. The signals from the limit switches 35 and 36 are input to the control means (not shown), and the control means (not shown) actuates the motors 25 and 26. When a signal from the limit switch 35 is input, the control means (not shown) causes the motor 25 to rotate clockwise and the motor 26 to rotate.
Is rotated counterclockwise by a predetermined angle, and when a signal from the limit switch 36 is input, the motor 25 is rotated counterclockwise and the motor 26 is rotated clockwise by a predetermined angle.

Here, the limit switch 35 has an a contact, and the limit switch 36 has a b contact. As a result, when the cover 34 is closed, a signal from the limit switch 35 is input to the control means (not shown) to position the guide plates 8 and 9 at the open position, and when the cover 34 is opened, the control (not shown) is performed. A signal from the limit switch 36 is input to the means to position the guide plates 8 and 9 at the closed position.

When a signal from the limit switch 36 is input to the control means (not shown), a time difference is provided between the operation timings of the motor 25 and the motor 26, so that each guide plate 8, 9 interference can be prevented.

[0050]

According to the first aspect of the invention, when each guide plate occupies the first position, the used master conveyed by the plate discharge conveying means is guided by each guide plate to ensure the plate discharge box. Since the master is stored inside, it is possible to suppress the plate ejection failure such as the used master not being stored in the plate ejection box, and when each guide plate occupies the second position, each guide plate puts the used master inside the plate ejection box. Since it is pushed in, it is possible to prevent stains on the operator's hand, clothes, and the inside of the printing apparatus due to the ink attached to the used master when the plate discharge box is pulled out.

According to the second aspect of the present invention, the operator can perform the work of discarding the plate discharge while being positioned in front of the printing device, and the sorter can be installed downstream of the plate discharge device without providing an intermediate conveying device. It can be attached directly, and the space occupied by the printing device can be reduced.

According to the third aspect of the present invention, since the interference between the guide plates is prevented, the turning operation can be performed smoothly.

According to the fourth aspect of the invention, when the plate discharge box is removed from the apparatus body, the operation of pushing the used master into the plate discharge box can be easily performed manually.

According to the fifth aspect of the present invention, since the plate discharge box keeps each guide plate held at the second position by the holding member when it is removed from the apparatus body, the operator mistakenly operates. It prevents the used master from falling into the stencil box and prevents the used master from dropping from the stencil box. Also, when the master is attached to the apparatus main body, the state in which the release member is held is released and each guide plate is moved to the first position. Since it is positioned at the position, the plate discharge box can be mounted and the guide plates can be positioned easily and quickly.

According to the sixth aspect of the invention, since the apparatus main body has the guide plate driving means, the structure of the plate discharge box can be simplified, and the positioning of each guide plate can be automatically and easily performed. It can be carried out.

According to the seventh aspect of the present invention, the guide plates can be positioned by opening / closing the cover, and the plate discharge box can be attached / detached more easily.

[Brief description of drawings]

FIG. 1 is a partial side sectional view of a main part of a plate discharge device of a stencil printing apparatus adopting a first embodiment of the present invention.

FIG. 2 is a partial top view of the inside of the plate discharge box showing the first embodiment of the present invention.

FIG. 3 is a side view of a plate discharge box used in the first embodiment of the present invention.

FIG. 4 is a partial side sectional view of a plate discharge box for explaining the first embodiment of the present invention.

FIG. 5 is a partial side view of the plate discharge box for explaining the first embodiment of the present invention.

FIG. 6 is a diagram for explaining the rotating operation of each guide plate in the first embodiment of the present invention.

FIG. 7 is a diagram for explaining the rotating operation of each guide plate in the first embodiment of the present invention.

FIG. 8 is a diagram for explaining the rotating operation of each guide plate in the first embodiment of the present invention.

FIG. 9 is a diagram illustrating the operation of the holding unit according to the first embodiment of the present invention.

FIG. 10 is a diagram illustrating the operation of the holding unit according to the first embodiment of the present invention.

FIG. 11 is a partial side sectional view of a main part of a plate discharge device of a stencil printing machine adopting a second embodiment of the present invention.

FIG. 12 is a partial side sectional view of a main part of a plate discharge device of a stencil printing machine, which is a modification of the second embodiment of the present invention.

FIG. 13 is a schematic side sectional view of a conventional stencil printing machine.

[Explanation of symbols] 2 Plate discharging device (plate discharging unit) 3 Plate discharge conveyor (upper plate discharge roller) 4 Plate discharging conveyor (lower plate discharging roller) 5,24 Plate ejection box 8 Upper guide plate 9 Lower guide plate 8b, 9b Free end (convex part) 11 grip 20 Holding member (operating piece) 22 Release member (positioning pin) 25,26 Guide plate drive means (motor) 34 cover

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-7-156522 (JP, A) JP-A-5-309933 (JP, A) Fukui Sho 61-201858 (JP, U) JP-B 4- 69074 (JP, B2) Jpn. Hei 6-11833 (JP, Y2) Jpn. 62-43811 (JP, Y2) (58) Fields investigated (Int.Cl. ⁷ , DB name) B41L 13/14 B41L 31 / 00

Claims (7)

(57) [Claims] 1. A stencil ejecting box which is composed of a pair of finely divided rollers and which conveys a used master and conveys the used master conveyed by the stencil conveying means, and is detachable from the stencil printing machine main body. In the stencil printing machine of the stencil printing machine comprising, the stencil box has a rotatable upper guide plate and a lower guide plate for guiding the conveyance of the used master into the stencil box, respectively, The upper guide plate and the lower guide plate selectively have a first position where each free end enters between the corresponding shredding rollers and a second position where the free ends separate from the shredding rollers and overlap each other. A stencil ejector of a stencil printing machine characterized by occupying. 2. The plate discharge device for a stencil printing apparatus according to claim 1, wherein the plate discharge box is attached and detached in a front direction of the stencil printing apparatus main body, which is orthogonal to a conveying direction of the used master. 3. The rotating operation of each of the guide plates from the first position to the second position is delayed for one operation and the other operation is performed, wherein the other operation is performed. Stencil ejector for stencil printer. 4. The plate discharge box has a gripping portion, and the gripping portion grips the gripping portion to rotate the guide plates from a first position to a second position. The plate discharge apparatus of the stencil printing apparatus according to claim 1, claim 2, or claim 3. 5. A holding member that holds each of the guide plates at a second position when the gripping portion is gripped, and the plate discharge box with the guide plates held at the second position. When mounted on the stencil printing machine main body, the holding state of each of the guide plates is released to move the guide plates to the first position.
5. A stencil ejector for a stencil printing machine according to claim 4, further comprising a releasing member positioned at the position. 6. The stencil printing apparatus main body according to claim 1, wherein the stencil printing apparatus main body comprises guide plate driving means for rotating each of the guide plates. apparatus. 7. The stencil printing apparatus main body has a cover that opens and closes when the stencil box is attached and detached, and the guide plate driving means is operated by the opening and closing operation of the cover. Stencil ejector for stencil printer.