JPH05318902A - Apparatus for discharging stencial - Google Patents

Abstract

PURPOSE:To drastically increase the storage capacity for used stencils and to eliminate the necessity frequently performing the cleaning and replacement of a disposal box even in a screen printing machine high in use frequency. CONSTITUTION:There are provided a primary duct 19 having at its upper end port through which used stencils are received, and a horizontal secondary duct 21 having a cross-sectional area larger than that of the primary duct 19 and communicating with the lower end of the primary duct 19 and closed at the rear end thereof by a barrier wall. Press plates 43, 75 are respectively provided to the primary and secondary ducts 19, 21 and an openable and closable door member 27 is provided to the primary duct 19 and, when a predetermined number of used stencils are stored in the primary duct 19, they are sent out to the secondary duct 21.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plate discharge processing apparatus,
In particular, the present invention relates to a stencil printing apparatus provided in a stencil printing machine and configured to dispose of used stencil sheet removed from the plate cylinder.

[0002]

2. Description of the Related Art A stencil sheet used as a stencil sheet removed from a plate cylinder of a stencil printing machine, that is, a stencil sheet discharging apparatus for squeezing the stencil sheet, is squeezed so that the stencil sheet is discarded without being bulky. A plate discharge processing device configured to be stored in a waste box has already been proposed. This type of plate discharge processing device is disclosed in, for example, Japanese Patent Laid-Open No. 60-71466,
It is shown in each of Japanese Unexamined Patent Publication Nos. 2-175277 and 2-251480.

[0003]

The plate discharge processing apparatus as described above achieves the intended purpose, but in this plate discharge processing apparatus, the waste box is made too large due to space restrictions. I can't. For this reason, the number of discharged plates that can be accommodated in one waste box cannot be set too large, which is about 100 at most. In a stencil printing machine that is frequently used, cleaning and replacement of the waste box are relatively difficult. It becomes necessary to do it frequently.

The present invention has been made by paying attention to the above-mentioned problems in the conventional plate discharge processing apparatus, and in a stencil printing apparatus which can greatly increase the number of stored discharged plates and which is frequently used. It is an object of the present invention to provide a large-capacity type plate discharge processing device that does not require frequent cleaning and replacement of the waste box.

[0005]

According to the present invention, there is provided a first plate discharge duct having a plate discharge inlet for receiving a plate discharge at one end, and a duct cross-sectional area larger than that of the first plate discharge duct. A second plate discharge duct having one end communicating with the other end of the first plate discharge duct and the other end closed by an impact wall, and an openable and closable provided at the other end of the first plate discharge duct A door member, a first pressing member that is reciprocally movable in the first plate discharge duct and compresses the plate discharge between the door member, and a reciprocating member in the second plate discharge duct. And a second pressing member that compresses the plate discharge between the plate and the abutting wall.

[0006]

According to the above-mentioned structure, the used stencil sheet removed from the plate cylinder of the printing apparatus, that is, the discharged plate is first put into the first plate discharge duct, and then the first plate discharge duct is used. The plate discharge compressed by the pressing member and compressed by the first plate discharging duct enters the second plate discharging duct when the door member is opened, and is compressed by the second pressing member in the second plate discharging duct. In this case, the waste plate discard box may be installed in the second plate discharge duct.

[0007]

Embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

FIG. 1 shows an example of the overall construction of a stencil printing machine equipped with a plate discharge processing apparatus according to the present invention. In FIG. 1, the stencil printing apparatus is indicated by reference numeral 1, and the stencil printing apparatus 1 is mounted on a frame 3.

The stencil printing machine 1 has a plate cylinder 7 in a cabinet 5. In the cabinet 5, a used stencil sheet removed from the plate cylinder 7, that is, a discharged plate for receiving a discharged plate from a direction of penetrating the paper surface. A box 9 is provided.

The plate discharge box 9 includes a lateral feed roller 11,
A semi-circular plate discharge pressing feed member 13 and a side feed roller pair 15 are provided, which laterally feed the plate discharge fed into the plate discharge box 9, that is, from the right to the left in FIG. The sheet is conveyed and sent to the primary duct (first plate ejection duct) 19 of the plate ejection processing device 17.

The horizontal feeding mechanism for this plate discharge is Japanese Patent Publication No. 61-54.
It may be the same as the original transport device shown in Japanese Patent Publication No. 708, and if detailed explanation thereof is required,
See Japanese Examined Patent Publication No. 61-54708.

The plate discharge processing device 17 is incorporated in the cabinet 5 of the stencil printing device 1 and extends above and below the side portion of the stencil printing device 1 in the vertical direction. And a secondary duct (second stencil discharge duct) 21 extending to the.

The primary duct 19 has a plate discharge inlet 23 opened at the upper end with respect to the pair of side feed rollers 15, and is aligned at the lower end with a communication opening 25 formed at the upper surface of the gantry 3. It is open.

The secondary duct 21 has a duct cross-sectional area that is sufficiently larger than that of the primary duct 19, and as shown by the phantom line in FIG. 1, the pedestal 3 can be drawn out in the left-right direction in FIG. In the plate discharge receiving position in the gantry 3 as shown by the solid line in FIG. 1, the primary duct 19 is connected through the communication opening 25 at the left end in FIG.
Communicates with the bottom opening. A waste box B such as a corrugated cardboard box is installed in the secondary duct 21 so as to be replaceable in a horizontal state.
The waste box B installed in the secondary duct 21 is the inner wall Bf.
Thus, the right end of the secondary duct 21 is closed, and the back wall Bf forms a substantial collision wall that closes the right end of the secondary duct 21.

As shown in FIGS. 1 and 2, a double door type door member 27 is provided near the lower end of the primary duct 19. The door member 27 is located at a door closing position for closing the primary duct 19 in a steady state in which it is biased in the door closing direction by a spring (not shown), and is opened by being given a downward door opening force of a predetermined value or more. It is configured to door.

As best shown in FIGS. 2-4, one side of the primary duct 19 has a vertical guide member 29 along it.
Is fixedly placed. The vertical guide member 29 has a guide groove 3
1 is provided with a vertical movement slider 35 which is engaged with a guide roller 33 and can move up and down, and a pressure plate base 39 is attached to the vertical movement slider 35 by an arm 37. A primary duct 19 is attached to the pressure plate base 39 by a pivot 41.
A primary pressure plate 43 located inside is tiltably attached. A solenoid 45 is attached to the arm 37, and the solenoid 45 is drivingly connected to the primary pressure plate 43. In the off state, as shown by a phantom line in FIG. 4, the solenoid 45 is connected to the primary pressure plate 43. Inside the primary duct 19, the primary pressure plate 43 is horizontally supported inside the primary duct 19, as shown by the solid line in FIG.

A vertical guide member 29 is attached to the vertical movement slider 35.
A pinion 49 that meshes with a rack 47 attached to is mounted rotatably by a shaft 51. Pinion 49
Is connected to the primary duct motor 57 by the bevel gears 53 and 55.
The primary duct motor 57 is driven to rotate forward and backward. By the forward and reverse rotation of the pinion 49, the vertical movement slider 35 and the primary pressure plate 43 move up and down, and the primary pressure plate 43 moves to the upper limit position (initial position) of the upper end of the primary duct 19 as shown by the solid line in FIG. And a pressing lower limit position that is a predetermined amount above the position where the door member 27 is arranged (the position indicated by the phantom line A1 in FIG. 2).
And a door opening / closing lower limit position (a position indicated by an imaginary line A2 in FIG. 2) which is a predetermined amount below the position where the door member 27 is arranged.

The primary pressure plate 43 is located at each of the above-mentioned upper limit position, pressing lower limit position, and door opening / closing lower limit position, so that the upper limit switch 59 is switched on and off, and the lower pressing limit. The switch 61 and the door open / close lower limit switch 63 are fixed.

As shown in FIGS. 2, 3 and 5, a horizontal guide member 65 is fixedly arranged along one side of the secondary duct 21. The horizontal guide member 65 is provided with a horizontal movement slider 71 which is engaged with a guide groove 69 by a guide roller 69 and is horizontally movable. The horizontal movement slider 71 is positioned in the secondary duct 21 by an arm 73. A secondary pressure plate 75 is attached.

The horizontal slider 71 has a horizontal guide member 65.
A pinion 79 that meshes with a rack 77 attached to is rotatably provided by a shaft 81. Pinion 79
Is a secondary duct motor 87 by the bevel gears 83 and 85.
The secondary duct motor 87 is driven and rotated in forward and reverse directions. Due to the forward and reverse rotations of the pinion 79, the horizontal slider 71 and the secondary pressure plate 75 move horizontally, and the secondary pressure plate 75 moves to the left end in FIG. 5 of the secondary duct 21 as indicated by the solid line in FIG. The reciprocating position (standby position) and the forward position (the position shown by the phantom line in FIG. 5) advanced to the right in FIG. 5 from the retracted position are reciprocated.

Since the secondary pressure plate 75 is located at each position corresponding to each of the retracted position and the advanced position, the reverse switch 89 and the forward switch 91, which are turned on and off, are fixed. ing.

A pressure plate switch 93 is mounted on the front surface of the secondary pressure plate 75 to turn it on and off when a pressing force of a predetermined value or more acts on it.

Next, the operation of the plate discharge processing apparatus having the above configuration will be described with reference to the operation flows shown in FIGS. 6 and 7 and the time charts in FIGS. 8 and 9.

First, the operation flow shown in FIG. 6 is started by activating the stencil printing machine, and first, the primary duct motor 57 is driven to rise (step 10).
As a result, the primary pressure plate 43 moves up toward the upper limit position which is the initial position.

When the upper limit switch 59 is turned on by the primary pressure plate 43 being located at the upper limit position, the ascending drive of the primary duct motor 57 is stopped (steps 20 and 30). As a result, the primary pressure plate 43 stands still at the upper limit position.

Next, it is monitored that the plate discharge permission signal is turned on (step 40). The plate discharge permission signal is generated by the timer control, for example, by a timer control, and a predetermined time has elapsed since the plate discharge was started.
This is a signal output at the time when the discharge of the plate to the primary duct 19 is completed, and when the plate discharge permission signal is turned on, the solenoid 45 is turned on and the primary pressure plate 43 is turned on.
Is horizontally supported, and the primary duct motor 57 is driven to descend (step 50). As a result, the primary pressure plate 43 descends in the primary duct 19 in a horizontal posture.

Under this condition, it is determined whether or not the count value of the counter indicating the number of discharged sheets stored in the primary duct 19 has reached a predetermined value, for example, "10" (step 60). If the count value has not reached the predetermined value, it is monitored that the pressing lower limit switch 61 is switched to the on state (step 70).

When the primary pressure plate 43 is located at the pressing lower limit position as shown by the phantom line A1 in FIG. 2, the pressing lower limit switch 61 is switched to the ON state, thereby stopping the descent drive of the primary duct motor 57. Is performed (step 80). As a result, the primary pressure plate 43 temporarily stops at the pressing lower limit position, and the primary pressure plate 43 moves to the primary duct 19.
The discharged stencil is compressed and squeezed between the door members 27 in the closed position.

Next, the count value is incremented by one, the solenoid 45 is turned off (step 90), the process returns to step 10, and the primary pressure plate 43 is returned to the upper limit position.

If it is determined in step 60 that the count value of the counter indicating the number of discharged plates stored in the primary duct 19 has reached a predetermined value, for example, "10", the primary duct full signal is given. The output is turned on, and the secondary duct motor 87 is driven backward (step 1).
00). As a result, the secondary pressure plate 75 moves backward in the secondary duct 19.

When the reverse switch 89 is turned on by the primary pressure plate 43 being in the retracted position, the backward drive of the secondary duct motor 87 is stopped (steps 110 and 120). As a result, the secondary pressure plate 75
Stands still at the retracted position, and the state where the discharged plate is received in the secondary duct 21 is completed.

Further, at this time, it is monitored that the door opening / closing switch 63 is turned on (step 13).
0), the primary pressure plate 43 passes through the pressing lower limit position as shown by the phantom line A1 in FIG. 2 and descends below it.

Due to the lowering of the primary pressure plate 43, the discharge plate accumulated in the door member 27 at the closed position is pushed by the primary pressure plate 43, pushes the door member 27 open, and passes through the communication opening 25 from the lower end opening of the primary duct 19. The secondary pressure plate 75 near the left end of FIGS. 1 and 2 of the secondary duct 21, that is, in the retracted position.
Fall in front of.

When the primary pressure plate 43 is located at the door opening / closing lower limit position as shown by the phantom line A2 in FIG. 2, the door opening / closing lower limit switch 63 is switched to the ON state, thereby raising the primary duct motor 57 from the descent drive. Switch to drive, turn off the solenoid 45, and set the count value to 0.
Is initialized (step 140).

When the upper limit switch 59 is turned on by the primary pressure plate 43 being located at the upper limit position, the ascending drive of the primary duct motor 57 is stopped (steps 150 and 160). As a result, the primary pressure plate 43 rests again at the upper limit position, and the primary duct full signal is returned to the off output.

At this time, the secondary duct motor 87 is driven forward (step 160). As a result, the secondary pressure plate 75 moves forward from the retracted position, and due to the forward movement of the secondary pressure plate 75, the discharged plate dropped from the primary duct 19 to the secondary duct 21 is pushed into the waste box B, and the secondary pressure plate 75 and The waste box B is compressed and squeezed with the back wall Bf.

While the number of discharged plates stored in the waste box B is small, as shown in the time chart of FIG. 8, the secondary pressure plate 75 advances to the forward position, at which time the forward switch 91 is turned on. The forward drive of the secondary duct motor 87 is stopped by switching to the state (steps 180, 190). As a result, the secondary pressure plate 75
Stands still in the forward position.

On the other hand, when the number of stored discharged plates in the waste box B is large, as shown in the time chart of FIG. 9, the secondary pressure plate 75 is moved by the reaction force due to the discharged plate compression before advancing to the forward position. The pressure plate switch 93 is turned on by the pressing force of a predetermined value or more acting on the pressure plate switch 93, and the forward drive of the secondary duct motor 87 is stopped at the time of this switching (steps 170 and 190). ). As a result, the secondary pressure plate 75
The stationary state is maintained at an arbitrary forward position in the secondary duct 21, and the discharged plate is compressed and squeezed between itself and the back wall Bf of the waste box B.

When the waste box B becomes full due to the plate discharge, the secondary duct 21 is pulled out from the frame 3, the waste box B is removed from the secondary duct 21, and the secondary duct 21 is removed.
It suffices if an empty waste box B is set in.

[0040]

As can be understood from the above description, according to the plate discharge processing apparatus of the present invention, the used stencil sheet removed from the plate cylinder of the printing apparatus, that is, the discharged plate, is finally mounted on the mount or the like. The second plate discharge duct, which can be installed at a position distant from the printer body, is compressed and squeezed, and the second plate discharge duct has a large duct cross-sectional area without being restricted in space by the printer body. Therefore, the number of discharged plates can be dramatically increased compared to the conventional one, and even in the stencil printing machine which is frequently used, cleaning and replacement of the waste box etc. It is not necessary to do it frequently, and it is possible to reduce the work time consumed by this.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing an example of the overall configuration of a stencil printing apparatus including a plate discharge processing apparatus according to the present invention.

FIG. 2 is a side view showing an embodiment of a plate discharge processing apparatus according to the present invention.

3 is an arrow view taken along line III-III in FIG.

FIG. 4 is a view taken along line IV-IV in FIG.

5 is an arrow view taken along line V-V in FIG.

FIG. 6 is a flowchart showing an operation flow of the plate discharge processing apparatus according to the present invention for steps 10 to 130.

FIG. 7 is a flowchart showing the operation flow of the plate discharge processing apparatus according to the present invention for steps 140 to 190.

FIG. 8 is a time chart showing an operation example of the plate discharge processing apparatus according to the present invention.

FIG. 9 is a time chart showing another operation example of the plate discharge processing apparatus according to the present invention.

[Explanation of reference numerals] 1 stencil printer 3 mount 7 plate cylinder 9 plate discharge box 17 plate discharge processing device 19 primary duct 21 secondary duct 27 door member 43 primary pressure plate 75 secondary pressure plate

Claims (1)

[Claims] 1. A first plate ejection duct having a plate ejection port for taking in the plate ejection at one end, and a duct cross-sectional area larger than that of the first plate ejection duct and having one end communicating with the other end of the first plate ejection duct. A second plate discharge duct having the other end closed by an impact wall, an openable / closable door member provided at the other end of the first plate discharge duct, and reciprocating in the first plate discharge duct. A first pressing member that is provided for compressing the plate discharge with the door member and a plate that is reciprocally movable in the second plate discharge duct and compresses the plate discharge A plate discharge processing apparatus comprising: a second pressing member.