JPH0220420B2 - - Google Patents

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a paper feeding device applicable to paper processing machines having a paper feeding section, box making machines, flexo folder gluers, printer slotters, die cutters, etc. It is.

(Prior Art) FIG. 1 shows an outline of a conventional paper feeding device for a box making machine. In the figure, a front stop 1 is held in place by left and right machine frames (not shown). 2 is a sheet fixing device, and its bottom plate 16
A convex portion (not shown) provided on the table 3 is fitted into a groove a provided on the table 3, and this engagement is used as a guide to slide the table 3 to a predetermined position in alignment with the scales 4 and 4'. , and can be fixed in that position by clasps 5, 5'.

The scales 6 are fixed to the slide bars 7, 7' fitted in the grooves b, b' of the table 3 by bolts 8 in alignment with the scales 9, 9', and are moved back and forth as the slide bars 7, 7' move back and forth. It is designed so that it can be slid back and forth on the table 3 within a certain range.

(Problem to be solved by the invention) However, in the conventional device shown in FIG.
Since all of these setups were done manually, (a) it took a considerable amount of time each time the sheet size was changed due to an order change.

(b) Also, there are individual differences and reading errors in scale reading, and when setting the position of the cutter 6, it is difficult to position it accurately and parallel to the front stop 1 on the left and right sides, making it impossible to feed paper correctly. However, there were drawbacks that led to a decline in product quality and production.

The present invention was proposed in order to solve the above-mentioned conventional problems, and by automating all the parts that conventionally relied on manual labor and also making presetting possible, it greatly shortens the setup time. It is an object of the present invention to provide a paper feeding device that can provide stable product quality.

(Means for Solving the Problems) Therefore, the present invention provides a sheet retaining device that is fixed and slidable on a table, and a groove provided on the table in parallel with the sliding direction of the sheet retaining device. In a paper feeding device having a lock that is fixed to a fitted slide bar via a bolt and can reciprocate back and forth as the slide bar moves back and forth, a rack installed in an expanded manner; a gear rotatably supported by the sheet locking device and meshing with the rack; a drive device attached to the sheet locking device and rotating the gear; A cylinder that can selectively fix the locker to the seat locking device when the rod protrudes; a cylinder that is rotatably connected to the seat locking device and has a concave cross section that can turn the head of a fixing bolt that fixes the locker and the slide bar; This device consists of a socket and vertical movement means that can selectively move the socket up and down, and is used as a means to solve the problem.

(Operation) When the drive device is started, the rotation of the gear is easily transmitted, and the seat stop device can be moved back and forth. Further, by operating the cylinder downward until the tip of the rod is inserted into the locker, the locker can be connected, and in this state, by moving the sheet stop device back and forth, the locker can be interlocked. Moreover, this interlock can be canceled by operating the cylinder in the direction in which the rod retracts.

Next, with the bolt connected with the rod, fit the recessed end of the socket into the head of the bolt, and then turn the bolt in the tightening direction.
Fix the cover and slide bar using the same bolt and nut. Next, when the seat stopper and the stopper are uncoupled, the seat stopper can be moved and stopped independently.

(Embodiment) An embodiment of the present invention will be described below with reference to the drawings.The structural positioning of the sheet stopping device and the paper feed section of the box making machine according to the present invention is the same as that of the conventional one. 2, 3, and 4 show a first embodiment of the present invention, in which FIG. 2 is a rear view of the sheet fastening device 2, FIG. 3 is a side view of the same, and FIG.
The figure shows a nut runner device 10, 10'.
In addition, 3 in FIGS. 2 to 4 is a table, and 6 is a table.
is a kitsuka, 7, 7' is a slide bar, 8 is a bolt,
16 is a bottom plate, which is the same as in FIG.

Now, in FIG. 2, the sheet locking device 2 is restrained only left and right and up and down by blocks 11, 11' fixed to its lower end and sliding plates 12, 12' fixed to the table 3, and moves back and forth on the table 3. It is arranged so that it can be slid on. Further, the sheet fixing device 2 is provided with a shaft 14 rotatably supported by left and right reinforcing members 13, 13', and gears 15, 15' are fixed to the shaft 14.

Bearings 17, 17' are fixed to the bottom plate 16, and shafts 18, 1 are fixed to the bearings 17, 17'.
8' is rotatably supported. Gears 19, 19' are pivotally attached to the shafts 18, 18' at positions where they mesh with the gears 15, 15'.
It is adapted to mesh with racks 20, 20' buried in the front and back direction. Further, one end of the shaft 14 is directly connected to a geared motor 21 fixed to the reinforcing member 13'. In addition, in FIG. 3, cylinders 22,
22' is fixed at a position where the tips of the piston rods 23, 23' can freely pass through holes c in the bottom plate 16.

FIG. 4 schematically shows the nut runner device 10, which includes a base 47 fixed to the bottom plate 16 and a shaft 2 fixed to the top plate 24.
5, 25a, a bearing 26 is fitted so as to be slidable up and down. At the center of this bearing 26 is a gear 2.
7 is fixed to a shaft 29 by a key 28, and a socket 30 having a concave cross section shaped to allow the head of a bolt 8 to be turned is riveted to the lower end of the shaft 29. Also shaft 29
The bearings 31 and 32 provided in the bearing 26
It is rotatably supported by.

The bearing 33 fixed to the base 47 rotatably supports the bell crank 34.
The shaft 29 is inserted into the left end fork part with a gap maintained. The other end of the bell crank 34 is connected by a pin to an end of a piston rod 36 of a cylinder 35 fixed to the seat stopper 2. The shaft 25a also has a pinion 37 at its upper end at a position where it meshes with the gear 27, and a worm wheel 3 at its lower end.
An integral gear 39 having a gear 8 is rotatably fitted therein. Further, a worm gear 40 is provided at a position where it meshes with the worm wheel 38, and the worm gear 40 is fixed to a shaft 42 which is rotatably supported by a bearing 41. This shaft 42 is directly connected to a motor (not shown). A nut runner device 10' having the same structure as described above is also provided on the opposite side of the sheet fixing device 2, and is connected to the nut runner device 10' by a single shaft 42.

Next, the operation of the first embodiment described above will be explained. First, in Fig. 2, geared motor 2
1 is started, the rotation of the shaft 14 is caused by the gears 15, 15', 19, 19' and the racks 20, 2.
0', and the seat stop device 2 can be moved back and forth. Next, in FIG. 3, when the cylinders 22, 22' are operated downward until the tips of the piston rods 23, 23' reach the positions indicated by the chain lines in the figure, the seat locking device 2 and the locker 6 can be connected, and in this state By moving the sheet locking device 2 back and forth, the locker 6 can be interlocked. In addition, the cylinders 22, 22' are connected to the piston rod 23,
This interlock can be released by operating 23' in the retracting direction.

FIG. 4 shows the locker 6 in the above-mentioned connected state, moved together with the bolt 8 and nut 44 to the set position by interlocking with the seat locking device 2, and then operating the cylinder 35 in the direction in which the piston rod 36 protrudes.
The socket 30, shaft 29, bearing 26, and gear 27 are lowered, and the recessed end of the socket 30 is shown fitted into the head of the bolt 8. When the motor (not shown) is started from this state in the direction in which the bolt 8 is tightened, the rotation is transferred to the socket 30 via the worm gear 40 and gears 39 and 27.
is transmitted, and the bolt 8 pulls up the nut 44 (the nut 44 is rotationally restrained by the wall of the square hole e).

FIG. 5A shows a state in which the locker 6 and the slide bar 7 are fixed by the bolt 8 and nut 44 due to this action. In FIG. 5B, the cylinder 35 shown in FIG. This shows the state in which the engagement with the Incidentally, the above-mentioned operation is performed simultaneously on the nut runner device 10' on the opposite side.

Next, the sheet fixing device 2 and the locking device 6 shown in FIG.
When the connection is released, the sheet stopping device 2 can be moved and stopped independently. That is, using the basic operation as described above, the pusher 6 and the sheet locking device 2
can be fixed or stopped at any set position on the table 3. All of the above operations are automatically performed by a push button switch (not shown), and the sheet locking device 2 and the locking device 6 are also operated automatically.
If the continuously variable positions of the table 3 are connected to a digital counter display (not shown), each can be automatically stopped at a predetermined position on the table 3, and presetting is possible.

FIG. 6 shows a schematic structure of a second embodiment, in which a pulse transmitter 43 is attached to the geared motor 21 shown in the first embodiment (FIG. 2), and a sheet stopping device 2 is provided with a pulse generator 43 as shown in FIG. A proximity switch 45 and an operating piece 46 are added to the lock 6, and a deviation counter (not shown) for storing the movement amount l is added in place of the digital counter display meter (not shown) of the first embodiment. ) has been established separately.

Next, the operation of the second embodiment shown in FIG. 6 will be explained. In addition, FIG. 7 shows the sheet fastening device 2 and the locking device 6.
This is an example of a sequence for automatically determining the set position. In No. 1 of the same figure, the pusher 6 and sheet holding device 2 indicated by solid lines indicate their current positions on the table 3, and the position indicated by chain lines corresponds to the feeding of a different size of paper, that is, the next order. This indicates the new position each of them should occupy. The sheet stop device 2 is then advanced by a distance l in the direction of the arrow in order to connect with the stopper 6, and the amount of movement l is stored in a deviation counter (not shown).

Next, as shown in No. 2, the pusher 6 and the sheet stop device 2 overlap, and the moment the proximity switch 45 detects the action piece 46, the transfer of the sheet stop device 2 is stopped (the chain line position shown in No. 2 is Same as No. 1). No.
Stage 3 is from No. 2 to the state shown in Figure 4.
In the stage No. 5, the socket 30 is in the position shown in FIG.
The new position (No.1 or
The figure shows a state in which the motor moves backward (moves by the difference between the preset counter setting value and the current position) to the position indicated by the chain line in No. 2, and then stops.

In addition, in the No. 7 stage, the piston rods 23 and 23' are returned to the position shown in Figure 5 A, in the No. 8 stage, the piston rods 23 and 23' are returned to the chain line positions in Figure 3, and in the No. 9 stage, they are returned to the same state as No. 4, and in the final stage. For No. 10, the sheet stop device 2 moves back by a distance l stored in a deviation counter (not shown), and the seat stopper 6 and the sheet stop device 2 move back to No. 1 or No. 1, respectively.
This shows that No. 2 was forced to take the new position indicated by the chain line. For other effects, please refer to 1 above.
This is similar to the example.

Incidentally, only the cylinders 22, 22' and the piston rods 23, 23' shown in FIG. 3 may be removed from the seat locking device 2 described as the first embodiment.
Further, when it is desired to interlock the seat locking device 2 and the locking member 6 from the state shown in FIG. It is also possible to release the fixation of the bolt 6 (the state shown in FIG. 4).
Further, when the sheet locking device 2 is moved in this state, the kicker 6 is interlocked with the sheet locking device 2 together with the bolt 8 and the nut 44 due to the engagement between the inner wall surface of the hole d and the outer peripheral surface of the socket 30. Furthermore, the cylinders 22, 22' and piston rods 23, 23' shown in FIG. 3 may be removed from the seat locking device 2 of the second embodiment.

FIG. 8 schematically shows another embodiment of the apparatus. Note that FIG. 8 corresponds to the nut runner apparatus 10, 10' shown in FIG. 4 as a first embodiment. Hereinafter, the differences from FIG. 4 will be explained with reference to FIG. 8. In this embodiment, the bearing 49 supports a shaft 51, and the shaft 51 can only rotate freely (cannot move up and down). The socket 52, which has two front and rear ear shafts 53, is fitted in a shape (for example, rectangular) that is restrained from rotation by engagement with the shaft 51 but can freely slide up and down (for example, a square shape), and is always pressed down by a spring 54. It's structured.

Next, the operation of the embodiment shown in FIG. 8 will be explained.
First, operate the cylinder 35 and move the piston rod 36.
When the socket 52 is moved in and out, the socket 52 moves up and down via the bell crank 34 using the shaft 51 as a guide as the spring 54 expands and contracts, and can engage or disengage the head of the bolt 8. The functions of the other constituent parts are the same as in the first embodiment. In this embodiment, the structure of the bearing 49 is simpler than in the first embodiment, and the gear 50 does not need to move in the axial direction relative to the pinion 37, so the gear 50 has a tooth width. It only needs to be narrow. In addition, the sheet fastening device 2 shown in FIG.
and the connecting element of Kitsuka 6 becomes unnecessary.

(Effects of the Invention) Since the present invention is configured as described in detail above, stopping the movement of the sheet fixing device on the table and fixing or loosening the sheet fixing device to the slide bar were all done manually in the past. However, with the present invention, all of this can be done in an extremely short time and easily by operating a panel from outside the machine, and it is also possible to preset, making it possible to perform setups using conventional setups. The time required can be drastically reduced. It is also possible to eliminate manual setup errors.

On the other hand, by presetting as described above,
Setup personnel (1 to 2 people) that were previously required
is no longer necessary, saving labor. In the conventional method (manual method), individual differences and setting errors occurred in the reading of the scale, and errors in the parallelism or spacing between the front stopper and the stopper occurred, resulting in problems with sheet feeding. According to the present invention, since the movement is stopped mechanically, there is no setting error, which contributes to improved productivity and quality.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an example of a conventional paper feeding device;
FIG. 2 is a partial cross-sectional rear view showing a sheet holding device of a paper feeding device according to an embodiment of the present invention, FIG. 3 is a side view of the same, and FIG. 4 is a vertical cross-sectional view showing a nut runner device in the same embodiment. 5A and 5B are enlarged views of the main parts shown in FIG. 4 in different operating states, FIG. 6 is a rear cross-sectional view showing a sheet locking device of a different embodiment from FIG. 2, and FIG. 7 6 is an explanatory diagram illustrating the sequence in FIG. 6, and FIG. 8 is a sectional view showing a nut runner device of an embodiment different from that in FIG. 4. Explanation of the main parts of the figure, a...Groove, 2...Sheet stopper, 3...Table, 6...Kicker, 7...Slide bar, 14...Shaft (drive device), 15...Gear (drive device), 19...Gear, 20...Lack, 21
...Geared motor (drive device), 22...Cylinder,
23... Piston rod, 30, 52... Socket.

Claims (1)

[Claims] 1 A sheet fixing device that is fixed and slidable on a table, and a slide bar that is fixed via bolts to a slide bar that is fitted into a groove provided on the table in parallel to the sliding direction of the sheet fixing device. , in a sheet feeding device having a rack that can reciprocate back and forth as the slide bar moves back and forth, a rack attached to the table extending in the front and back direction parallel to the groove; A gear that is rotatably supported and meshes with the rack, a drive device that is attached to the sheet locking device and rotates the gear, and a rod that is provided on the sheet locking device and selectively applies the hitter to the sheet locking device when the rod protrudes. a cylinder that can be fixed to the seat, a socket that is rotatably connected to the seat locking device and has a concave cross section that can turn the head of a fixing bolt that fixes the locker and the slide bar, and a vertically movable socket that can selectively move the socket up and down. A paper feeding device comprising: means.