JPH01110433A - Feeder for automatic printing machine - Google Patents

Abstract

PURPOSE:To facilitate position adjustment of a paper piling pallet enabled to hold a stable condition in the predetermined paper feed direction by constituting a device liftably holding the paper piling pallet by a pallet rear part holding mechanism so as to be horizontally moved tilting by a moving piece. CONSTITUTION:Controlling a pallet rear part holding mechanism 30 holding a paper piling pallet 28 in its rear part from its both sides, the paper piling pallet 28 is adjusted in its direction to the predetermined paper feed direction. A lifting base bed is formed in its front end side movable in a width direction along a lift guide means 17, accordingly the paper piling pallet 28 moves the whole unit in the predetermined direction, smoothly performing position adjustment. When both or one rotary control handle 19 is controlled rotating, feeding by a thread a moving piece screwed to a thread bar in the system of the handle, the paper piling pallet 28 is horizontally moved tilting with a paper mounting bed 18 engaged with and connected to the moving piece. Accordingly, performing the position adjustment of the paper piling pallet 28 so as to be directed accurately, facing the paper feed direction, the pallet can be surely held.

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to a feeder that automatically feeds sheets one by one to an offset printing machine, and more particularly to a swing-type feeder that suspends a high stack of paper stacks.

[Conventional technology]

FIG. 9 is a schematic perspective view of a conventional swing type feeder, and FIG. 10 is a cross-sectional view of a bar mounting portion of the paper loading portion. In the figure, 1 is a chain installed on the front, rear, left and right sides of the feeder frame and driven up and down by a motor (not shown), 2 is a rod connected to the lower end of the chain, and 3 is integrally connected to the lower end of rod 2 by welding, etc. 4 is a front protruding shaft portion projecting forward from both sides of the hanging frame 3; 4a is a small diameter shaft portion of the forward protruding shaft portion 4;
Reference numeral 1 indicates a paper stacking pallet on which stacks of paper are piled high and is mounted on the hanging frame 3, 6 indicates a bolt that is removably fitted into the small diameter shaft portion 4a as required, and 7 indicates the bolt 6 and the above-mentioned paper. It is a model that is driven between the front end surface of the stacking pallet 5 and the front end surface as necessary. Next, a case will be described in which a paper stacking pallet is set on a feeder. The set includes bolts 6 and &! 7 may be used or may not be used. First, a case will be described in which a stacking pallet is set without using the bolts 6 and &y7. In this case, the paper stacking pallet 5 loaded with paper bundles is simply loaded onto the hanging frame 3 by a forklift, and as a result, the paper stacking pallet 5 is The stack of paper on the stacking pallet 5 is automatically fed to the rotary press one by one starting from the topmost paper. As the paper stack on the paper stacking pallet 5 decreases, the hanging frame 3 is sequentially and intermittently driven upward by the amount of the decrease. In such a paper feeding cycle, the paper stack on the paper stacking pallet 5 decreases. When the number of paper bundles decreases, the load of the paper stack decreases and the stability of the paper stacking pallet 5 deteriorates. For example, if the pallet 5 shifts diagonally and is left as it is, the paper will be delivered diagonally.Therefore, in order to prevent the paper stacking pallet 5 from moving, the gaps 6 and wedges 7 are In this case, after loading the paper stacking pallet 5 on the hanging frame 3,
A bolt 6 is fitted into the small diameter shaft portion 4a of the forward protruding shaft portion 4, and then a pattern 7 is inserted between the internuclear space 6 and the front end surface of the paper stacking pallet 5.
The paper stacking pallet 5 is fixed on the hanging frame 3 by driving the paper into the frame 3, and in this state paper is fed to the rotary press.

[Problems to be Solved by the Invention] Since the conventional automatic printing press feeder is configured as described above, the paper stacking pallet 5 is simply mounted on the hanging frame 3 without using the bolts 6 and the pins 7. When set, the paper stacking pallet 5 becomes easy to move, causing the problem that the paper is sent out diagonally.Also, even when the bolt 6 and JRA7 are used, the mounting of the paper stacking pallet 5 is difficult when set and Not only is the removal work time-consuming and very troublesome, but the pressing of the stacking pallet 5 by the above-mentioned gaps 6 and 7 may be insufficient in force. When the paper stacking pallet 5 starts to move, the paper becomes slanted to the paper feeding direction, so there is a problem in that each time this happens, the slanted paper must be picked up by hand to correct the paper feeding direction. . This invention was made in order to solve the above-mentioned problems, and it is possible to easily adjust the position of the paper stacking pallet mounted on the mounting table, and furthermore, in the adjusted position, the paper stacking pallet To provide a feeder for an automatic printing machine which can reliably hold a paper stack in a stable state in a predetermined paper feeding direction and prevent a paper stacking pallet from moving out of order. [Means for Solving the Problems] The feeder for an automatic printing press according to the present invention has a front end side of an elevating base for loading, which is suspended from the feeder frame via a chain that is driven up and down by a motor. , which is fitted into and engaged with the front support of the feeder frame so as to be movable up and down, and is engaged and supported by a lifting guide means projecting in the horizontal direction so as to be movable in the width direction; The rear part of the pallet is clamped from both ends by a pallet rear clamping mechanism so that it can be raised and lowered, and the moving pieces are attached to a pair of left and right threaded rods that are incorporated into the lifting base and rotated by a rotary operation handle. They are screwed together, and the movable pieces are engaged with and connected to the back sides of both sides of the paper mounting base, and the paper mounting base is horizontally tilted by the movable pieces that are screw-fed by the rotation of the threaded rod. be.

[For use]

The feeder for an automatic printing press according to the present invention uses a forklift to load a paper stacking pallet with a high stack of paper stacks onto a paper loading table, and then operates the pallet rear clamping mechanism to operate the pallet rear clamping mechanism as described above. By pinching the rear part of the paper stack pallet from both sides, the I theory amount of the paper stack pallet is adjusted in a predetermined paper feeding direction. At this time, the front end side of the elevating base is movable in the width direction along the elevating guide means, so that the paper stacking pallet is The entire paper is moved in a predetermined paper feeding direction, and its position can be adjusted smoothly. In addition, when both or one of the rotation operation handles is rotated, the threaded rod of that system rotates, and the moving piece screwed to the threaded rod is screwed in the axial direction, so that the moving piece is rotated. The engaged and connected paper loading platform tilts horizontally with respect to the paper feeding direction, and the paper stacking pallet is horizontally tilted together with the paper loading platform, thereby positioning the paper stacking pallet so that it faces the correct paper feeding direction. be adjusted.

【Example】

Hereinafter, one embodiment of the present invention will be described based on the drawings. In FIG. 1, reference numeral 10 is an offset printing machine consisting of a plurality of rotary presses 10a to 10d that perform different color printing, and 11 is a feeder that continuously supplies printing paper to the offset printing machine 10. As shown in FIG.
It is equipped with 4. The front end side of this elevating base 14 is adapted to move up and down using the front support column 120 of the feeder frame 12 as a guide. That is, the elevating base 14 consists of a frame whose front end is open to a width that allows the fork of a forklift to be inserted, and has left and right front arm portions 140 protruding in opposite directions on both sides of the front end, and opposite arms on both sides of the rear end. It has left and right rear arm parts 141 that project in the direction, and between these front arm part 140 and rear arm part 141, there are a pair of left and right suspensions that are parallel to each other on both sides of the lifting base 14. A lower horizontal shaft 15 is mounted, and a lower end connecting rod 13a of the chain 13 is integrally connected to the front and rear ends of the horizontal suspension shaft 15 by welding or the like. As a result, the elevating base 14 is horizontally suspended by the chain 13, and is driven up and down by means to be described later. Further, as shown in FIGS. 2 to 4, the front arm portion 140 is provided with two guide rollers 16 that protrude forward.
is rotatably supported. The guide roller 16 is connected to the feeder frame 1.
A guide member (
It is engaged with the lifting guide means (17) so as to be horizontally movable. To explain this point in more detail, the front support 12
0 is the vertical guide groove 1 as shown in FIGS. 3 and 4.
21, and the guide member 1 is inserted into this vertical guide groove 121.
The tip protrusion 17a of No. 7 is fitted and engaged so as to be slidable up and down. Further, a vertical outer rail 122 (see FIGS. 3 and 4) is integrally attached to the outer side of the front support column 120, and a vertical outer rail 122 (see FIGS. 3 and 4) is integrally attached to the outer side of the tip of the guide member 17. A rail receiving groove member 17b is fitted and engaged so as to be slidable up and down. This allows the guide member 17 to move up and down with good stability along the front support 120 while protruding from the inside of the front support 120 in a right angle direction. As shown in FIG. 4, this guide member 17 is provided with a horizontal sliding groove 17c along the axial direction.
The guide roller 16 is movably fitted and engaged with 7c. Incidentally, slits 17d are provided on both sides of the sliding groove 17c in the longitudinal direction, and the slits 17d include the following:
The shaft portion of the guide roller 16 and the distal end side of the horizontal suspension shaft 15 are slidably fitted. Therefore, both sides of the front end of the elevating base 14 are engaged with the front support 120 via the suspension horizontal shaft 15, guide rollers 16, and guide members 17 so as to be able to rise and fall. On the elevating base 14, a mounting base 18 for mounting a paper stack pallet is supported so as to be movable back and forth and horizontally tiltable. Here, the related structure of the elevating base 14 and the paper mounting table 18 will be explained. First, on both sides of the front end of the elevating base 14, a pair of left and right rotary operation handles 19 for adjusting the movement of the paper mounting table 18 are rotatably provided. Here, as shown in FIG.
A threaded rod 22 is interlocked with the rotating shaft 19a of 9 through a bevel gear 20°21. The threaded rod 22 is rotatably supported on the back side of the elevating base 14 via a plurality of bearings 23 in a fixed position. The threaded portion 22a of the threaded rod 22 has the threaded portion 22a of the threaded rod 22
A moving piece 24 that is screwed and moves in the axial direction when the
are screwed together. In this case, the movable piece 24 moves in sliding contact with the back surface of the elevating base 14, thereby preventing co-rotation with the screw stud 22. Further, in the case of the illustrated example, the moving piece 24 is connected to the threaded rod 2.
It is fixed with a set screw 26 to a screw plate 25 screwed into the screw plate 2. This saves the effort of threading the movable piece 24. The movable piece 24 itself is threaded to form the threaded plate 2.
5 may be omitted. The moving piece 24 is integrally provided with an upward engaging protrusion 24a, and this engaging protrusion 24a is connected to a guide slit 14 provided on the lifting base 14 and parallel to the threaded rod 22.
It is engaged with the paper mounting table 18 via 2. As the engagement means, as shown in FIGS. 5 and 6, on the back side of both sides of the above-mentioned guide slit 18, there are left and right sides having a long axis above the guide slit 142 and perpendicular to the longitudinal direction thereof. A pair of horizontally elongated holes 18a are provided, and the engaging protrusion 24a is fitted into and engaged with the horizontally elongated holes 18a. With such a securing means, when the left and right rotational operation handles 19 are rotated simultaneously in the same direction and at the same speed,
As each threaded rod 22 rotates in the same direction at the same speed and each movable piece 24 moves in the same direction at the same speed, the engaging protrusion 24a of the movable piece 24 is perpendicular to the horizontally elongated hole 18a in its longitudinal direction. The paper mounting table 18 moves forward or backward while maintaining its current posture. Further, when only one of the left and right rotary operation handles 19 is rotated, only the threaded rod 22 of this system is rotated, and the moving piece 24 of the same system is moved, and the engagement protrusion 24a of the screw rod 22 is rotated, and the engaging protrusion 24a of the moving piece 24 moves. By pushing only one side of the holder 18, the holder 18 is tilted in a horizontal state. In this way, use the left and right rotation operation handles 19 to rotate the
8 can be moved straight or tilted in the forward and backward directions, thereby making it possible to correctly position the holder 18 in a predetermined paper feeding direction. The mounting base 18 is mounted on the elevating base 14 via a plurality of fixed motion plates 27 made of friction members, and the frictional engagement force of the fixed motion plates 27 prevents the paper mounting metalwork 8 from collapsing. Moreover, only when the rotary operation handle 19 is operated, it moves accurately in the position adjustment direction as described above. As shown in FIG. 5, a paper stacking pallet 28 on which stacks of paper 29 are piled up is mounted on the paper loading table 18 by a forklift or the like. In addition, at the rear of the feeder frame 12, there are
As shown in the figure, a pallet rear clamping mechanism 30 is provided which clamps and stabilizes the rear end of the paper stacking pallet 28 mounted on the paper stacking table 18 from both sides. This pallet rear clamping mechanism 30 includes a pair of left and right vertical guide members 31. which are vertically elongated angle members that are movable in the width direction at the rear of the feeder frame 12.
32, screw feeding pieces 33.34 integrally projecting from each of these vertical guide members 31.32, and screwed through the screw feeding pieces 33.34, respectively, and fixedly positioned on the feeder frame 12 side. A rotatably supported threaded rod 35
36, and operating handles 37 and 38 integrally provided on the threaded rods 35 and 36. Therefore, the screw feed pieces 33.34 are screw fed by the rotation of the threaded rods 35, 36 by the rotation of the operation handles 37, 38, and the vertical guide member 31° is integrally moved with the screw feed pieces 33.34. 32 moves in a direction to expand or contract the mutual spacing, and the rear end of the stacking pallet 28 is sandwiched from both sides by the vertical guide members 31, 32. In this case, the vertical guide members 31 and 32 are adjusted to a pinching state that allows the paper stacking pallet 28 to move up and down. As a result, the paper stacking pallet 28 is also stably held in the correct position facing the predetermined paper feeding direction. Next, the elevating and lowering driving means for the elevating foundation 4 will be explained. In the upper part of the feeder frame 12, front and rear and left and right sprockets 41 to 44 are rotatably arranged at the front and rear ends on both sides, as shown in FIGS. 7 and 8. The chains 713 are wound in an interlocking manner, and a balance way 1-13b for preventing loosening is connected to the end of the chains 713. Here, the sprockets 41 and 42 are connected to the first rotating shaft 45.
And, the sprockets 43 and 44 are connected by a second rotating shaft 46, and the first rotating shaft 45 and the second rotating shaft 46 are connected to each other by bevel gears 45a, 47a, transmission shaft 47, and bevel gears 47b, 46a. are maintained in an interlocking relationship through each of them. The first rotating shaft 45 is a reduction gear 45b. It is linked to the motor 48 via 48a. This motor 48 is activated when a micro switch 49 (see FIGS. 2 and 5) provided on the feeder frame 12 is turned on.
It is activated intermittently by turning it off. This microswitch 49 is connected to the paper stacking pallet 28.
This is to detect the top paper 29a of the stacked paper stack 29.It is pushed up by the top paper 29a and turns OFF, and after passing the top paper 29a, it returns and turns ON.
At this time, the motor 48 is started. Therefore, by intermittent activation of the motor 48 by turning on and off the microswitch 49, the first rotating shaft 45 and the second
The chain 71 is intermittently driven to rotate in the opposite direction to the rotating shaft 46, thereby meshing with the sprockets 41 to 44.
3, the elevating base 14 is intermittently driven up and down while maintaining a horizontal state. The means for driving the sprockets 41 to 44 by the motor 48 is not limited to the one shown in the drawings, but any means may be used as long as it is capable of intermittently driving the elevating base I4 up and down as described above. It may be. At the top of the feeder frame 12, a paper feed header 50 is disposed for feeding the paper bundle 29 sheet by sheet one by one starting from the topmost sheet 29a. This paper feed header 50 is connected to the top paper 29a of the paper bundle 29.
It has a well-known configuration including an air injection nozzle 51 for loosening the uppermost paper 29a from the lower paper bundle, and a suction nozzle 52 for sucking the uppermost paper 29a that has been loosened and sending it out to the rotary aloa. Next, the operation will be explained. First, the paper stacking pallet 28 on which the paper bundles 29 are piled up is loaded onto the paper loading table 18 in the lowered position using a forklift. Next, the paper stacking pallet 28 on the paper stacking platform 18 is moved back and forth or tilted using the rotary operation handle 19.
Adjust to the desired position. After that, the operation handle 37.
38 and move the vertical guide members 31 and 32 of the pallet rear clamping mechanism 30, the rear ends of the stacking balents 28 are moved from both sides by the vertical guide members 31 and 32. Insert. By this pinching, the paper stack 29 on the paper stacking pallet 28 is correctly positioned in a predetermined paper feeding direction with respect to the rotary press 10a. Here, the paper stacking pallet 28 moves in the width direction when it is pinched by the vertical guide members 31 and 32, but in this case, the guide roller 16 moves in the sliding groove of the guide member 17 on the front end side of the elevating base 14. 17c to move in the width direction, and the lifting base 1
Since the rear end side of 4 is in a state where it can swing freely as it is simply suspended by the chain 13, the lifting base 14 and the paper loading platform 18 are integrally moved in the width direction with the paper stacking pallet 28. Moving. Therefore, the paper stacking pallet 28 does not move alone due to the pinching, and the paper stacking pallet 28 is always maintained in a stable state on the paper mounting table 18. In this way, after the paper stacking pallet 2 on the paper loading platform 18 is correctly installed in the predetermined paper feeding direction, when the start switch (not shown) is turned on to start the motor 48, the sprocket Chain 13 via 41-44
By being rolled up, the elevating base 14, the loading table 18, and the paper stacking pallet 28 are raised integrally. As a result, when the top paper 29a of the paper bundle 29 on the paper stacking pallet 28 pushes up the microswitch 49,
The motor 48 stops, and at the stopped position, the uppermost paper 29a is decomposed by the air jetted from the air injection nozzle 51, and at the same time, the uppermost paper 29a is sucked by the suction nozzle 52 and sent to the rotary press 10a. Ru. After sending out the paper, the motor 48 is restarted by the return operation of the microswitch 49, and the lifting base 14, the loading table 18, and the stacking pallet 28 rise again, and the next top paper is loaded onto the wheel. It is sent to the turning point 10a. By repeating such a cycle, the paper stack 29 on the paper stacking pallet 28 is automatically and continuously delivered sheet by sheet starting from the top sheet 29a. Therefore, by sending out the paper stack 29 on the paper stacking pallet 28, the number of paper stacks 29 on the paper stacking pallet 28 gradually decreases, and thereby the paper stack load on the paper stacking pallet 28 becomes lighter. 28 will not move unsteadily on the paper table 18. That is, the mounting base 18 is the fixed moving plate 2
The paper stacking pallet 28 is securely held on the lifting base 14 by the frictional engagement force of
1.32, the paper stack pallet 28 is held securely and stably on the paper platform 18. Therefore, even if the paper stack load on the paper stacking pallet 28 becomes lighter, the paper stacking pallet 28 will not move, and the paper stack 29 will reliably and smoothly move in the predetermined paper feeding direction until the last paper. Sent out.

【Effect of the invention】

As described above, according to the present invention, the front end side of the lifting base, which is suspended by a chain and driven up and down, is engaged in the width direction with the lifting guide means fitted into and engaged with the front support of the feeder frame so as to be able to move up and down. When the rear part of the paper stacking pallet in the Gito high-stack state, which is movably fitted and engaged and mounted on the Gito loading base on the lifting base, is pinched on both sides by the pallet rear clamping mechanism. The orientation of the paper stacking pallet can be adjusted in a predetermined paper feeding direction together with the lifting base and the mounting base, and the rear part of the paper stacking pallet is sandwiched as described above, so that the paper stacking This prevents the paper pallet from moving unsteadily on the paper tray. Also,
By rotating the rotation operation handles on both the left and right sides of the lifting base, or either one of the left and right rotation handles, the threaded rod of the system rotates, and the movable piece screwed onto the threaded rod is screwed in the axial direction. The paper stacking platform that is engaged and connected to the moving piece moves forward and backward or tilts horizontally with respect to the paper feeding direction, and the paper stacking pallet moves together with the paper stacking platform, so that the paper stacking pallet is guided in the correct paper feeding direction. The position can be easily and skillfully adjusted to face the user. Therefore, unlike the conventional case where bolts and wedges were used together, replacing the paper stacking pallet can be done easily and quickly, which greatly contributes to improving work efficiency. Paper feeding efficiency is also improved since the paper does not start moving on the stand.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an automatic printing machine equipped with a feeder according to an embodiment of the present invention, FIG. 2 is a front perspective view of the feeder for the automatic printing machine, and FIG. A schematic plan view of the mounting section, FIG. 4 is an enlarged sectional view showing the related structure between the front part of the lifting base and the front support of the feeder frame, and FIG. 5 is an enlarged view showing the position adjustment means of the mounting table. 6 is a back view of the paper loading table, FIG. 7 is a plan view of the elevating drive means, FIG. 8 is a front view of FIG. 7, and FIG. 9 is a view of a conventional swing type feeder. FIG. 10 is a schematic perspective view showing the paper loading section, and a sectional view of the bar mounting section in the paper loading section. In the figure, 12 is a feeder frame, 13 is a chain, and 14 is a feeder frame.
1 is a lifting base, 17 is a guide member (lifting guide means), 1
8 is a mounting stand, 19 is a rotating operation handle, 22 is a threaded rod, 24 is a moving piece, 30 is a pallet rear clamping mechanism, 48
is the motor.

Claims (3)

[Claims] (1) An elevating base for paper loading suspended from the feeder frame via a chain that is driven up and down by a motor, a paper loading base movably placed on this elevating base, and the elevating and lowering base mentioned above. A pair of left and right threaded rods built into the base, a rotation operation handle that rotates the threaded rods in fixed positions, and a rotation operation handle that is screwed onto each of the threaded rods and is engaged and connected to the back side of both sides of the paper mounting table. A movable piece that allows horizontal tilting of the paper loading platform engages and supports the front end side of the elevating base so as to be movable in the width direction, and is fitted and engaged with the front support of the feeder frame so as to be movable up and down. and a lifting guide means that projects horizontally from the front support, and a pallet rear clamping mechanism that clamps the rear part of the paper stacking pallet mounted on the paper loading table from both ends and stabilizes it so that it can be raised and lowered. Feeder for printing presses. (2) The elevating guide means includes a guide member that is fitted into and engaged with the front support so as to be able to move up and down and projects horizontally inward from the front support, a sliding groove provided in the guide member, and a sliding groove provided in the guide member. The automatic printing machine according to claim 1, further comprising guide rollers rotatably provided on both sides of the front end of the base and movably fitted into and engaged with the sliding grooves. feeder. (3) The pallet rear clamping mechanism includes a pair of left and right vertical guide members that are movable in the width direction at the rear of the feeder frame, and operating means for individually moving these vertical guide members. A feeder for an automatic printing press according to claim 1, characterized in that the feeder comprises: