JPH025650B2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention automatically feeds a large number of stacked papers as one unit between display tapes (ream marker tapes) inserted every predetermined number of sheets. This relates to a device that has been used.

Conventional technology and its problems In paper mills, paper cut to a predetermined size is stacked on a pallet in large numbers, and between these stacked papers, a fixed number of sheets, such as 100 sheets, 250 sheets, 500 sheets, or 1000 sheets, are cut. It is shipped with a ream marker tape inserted that allows it to be sorted. Then, when supplying this to paper wholesalers, etc., or when supplying it to printers and publishers,
If this is to be packaged as a unit between the ream marker tapes or further to be cut into smaller dimensions, it is fed to a guillotine cutter. At this time, an operator manually separates and supplies a predetermined number of sheets of paper stacked on the pallet one by one using a ream marker tape to an automatic packaging machine, guillotine cutter, or the like. For this reason, it is labor-intensive and inefficient to separate and supply a constant number of sheets from stacked papers.

Furthermore, since it is difficult to supply an accurate number of sheets, paper mills etc. insert this ream marker tape at a position where the number of sheets is stacked slightly more than the set number of sheets, to prevent paper shortages when feeding. This is a huge loss for paper wholesalers and paper wholesalers.

Means for Solving the Problems The present invention has been made in view of the above, and includes a pallet elevating paper feeding section which places stacked papers on a pallet and is movable up and down, and a ream marker tape for the stacked papers. a wedge-shaped insertion head equipped with a sensor for detecting the presence or absence of a ream marker tape, a suction hole for adsorbing the tape, and a ream marker tape. A head frame equipped with an insertion bellow that is inserted into the paper along the tape is provided so as to be movable in the front and back and up and down directions, and the stacked paper is separated vertically at the ream marker tape section using the insertion bellow and the head. The present invention is characterized in that it is equipped with a gripper that grips the separated paper ends and moves them to the next process side.

Embodiments The present invention will be described below based on illustrated embodiments.

In the figure, A is the main body of the automatic paper feeder of the present invention, which is installed adjacent to a flat-format automatic packaging machine, guillotine cutter, etc. This is the main body of the automatic paper feeder of the present invention, which is installed in a paper factory etc. to cut paper into predetermined sizes on a pallet PT. A ream marker tape T is inserted every predetermined number of sheets of paper, and the stacked sheets are fed by a forklift or the like and automatically raised and lowered to feed a fixed number of sheets. A separation supply unit adjacent to a pallet elevating paper feeding section 1 and an elevating table on which the pallet is placed and ascending and descending, separates the paper along the ream marker tape, and feeds the paper as one unit to the next process. It consists of part 3.

This pallet elevating table 2 is equipped with an elevating machine 2a, and the pallets placed on this pallet elevating table are sequentially raised or lowered to the separation supply section installed at the upper part of the main body, and are automatically raised and lowered. None, this elevator 2a adopts various types such as link lift type, chain type, hydraulic cylinder type, etc.

The separating feeder 3 comprises an insertion head 4, an insertion bellows 5 and a gripper 6, as shown in detail in FIGS. 1 and 2. This insertion head 4 is attached to the main body frame F.
Racks L and L are respectively disposed on the inner surface of a vertical frame Fa that protrudes approximately horizontally in parallel to the frame.The lower part of the rack L is supported by a cam C, and the rotation of the cam C allows the rack L. At the same time, a pinion P is engaged on this rack L, and this pinion P is horizontally mounted between two opposing pinions P and P that are respectively engaged on the opposing rack L. A head frame 41 which is slidable in the longitudinal direction of the shaft and can be stopped at any position is provided on the moving shaft S, which is integrally formed with the head frame 41, and the insertion head 4 is mounted on this head frame 41. This head frame 41 has a guide rod 42 along the direction of movement of the insertion head, as shown in detail in FIG.
The guide rod 42 is provided with a slidable boss 43, and the center or rear part of the insertion head 4 is fixed to the boss 43. 4
is placed on the head frame with a little space, and a rod 45 is installed between the rear end of the insertion head and the crank 44, and when the crank rotates, the insertion head 4 is moved back and forth through the rod. Proceed. This crank 44 is supported by a motor M provided on the head frame, and is rotated by the motor. As shown in the figure, the insertion head 4 has a wedge-shaped tip so that it can be inserted accurately into the stacked sheets, and has a flat lower surface and an inclined upper surface. A suction hole 4a for suctioning a ream marker tape is bored, and a ream marker tape detection sensor _C1 for detecting the presence or absence of a ream marker tape and a sensor _C2 for detecting a defective ream marker tape are provided at different positions. .

In addition, the head frame 41 has an auxiliary frame 46.
This auxiliary frame 46 is provided with a bellow guide 51 for guiding the insertion bellows 5 made of a thin leaf spring so as to appear and retract above the insertion head and along the insertion head, and a cylinder 52 for the bellows to emerge and retract. The rear end of the insertion bellow, which is provided so as to be slidable in and out of the bellows guide 51, is fixed to the rod of the cylinder 52.

In addition, a bellow 5 for lifting the ream marker tape is provided on the front end side of the head frame 41 so that the ream marker tape is surely attracted to the suction hole of the insertion head.
Place 3. This lifting bellows 53 is provided at the tip of a lifting bellows frame 55 which is provided so as to be raised and lowered by a cylinder 54 with respect to the head frame 41, and is arranged so as to intersect with the lifting bellows frame 55. That is, an insertion cylinder 56 is provided in a direction perpendicular to the insertion head and at a position outside the insertion head, and the lifting bellows 53 is fixed to the rod tip of this cylinder 56.

Therefore, the insertion head 4 and the insertion bellows 5 are supported by one head frame 41, and the head frame can be moved horizontally (operated by rotating the screw rod 48 arranged below the head frame), and can be moved up and down by raising and lowering the rack L. By rotating the pinion or moving forward and backward by moving the rack, both move sideways, up and down, and back and forth at the same time, and the movement of appearance and retraction is performed individually.

The gripper 6 has a sliding body 62 supported by a guide rod 61 arranged approximately horizontally on the main body frame F, and a support rod 63 is installed between the sliding bodies 62, 62 facing each other at the left and right inner ends of the main body frame. integrated and sliding along this support rod,
and is provided so that it can be fixed at any position,
The grippers 6 are usually arranged in pairs on both sides of the insertion head 4, and each gripper 6 is provided with a gripper body 64 that is slidably supported on a support rod 63, and a gripper body 64 that is mounted on the gripper body. The lower end of the gripper body is formed into a fork shape, and the fork portion 64a and a pressing plate 65a provided on the rod of the cylinder 65 are vertically opposed to each other, and are stacked together when the insertion head is inserted. A unit of paper edge separated by the required number of sheets from the paper section is held and transferred to an automatic packaging machine or cutter. At this time, in order to easily transfer the paper, an air blowing hole 64b is bored in the fork portion of the gripper body, and air is blown into the separated position of the stacked papers. The gripper 6 is moved forward by a chain 66 or cylinder arranged along the guide rod 61.
This is carried out using a moving device such as a screw rod, and in this embodiment, a part of the chain 66 is fixed to a sliding body, and the gripper 6 is moved forward and backward by selectively driving the chain in forward and reverse directions. be.

Operation The operation of the automatic paper feeder configured as described above will be explained with reference to the operation explanatory diagram of FIG. 3.

After the papers stacked on the pallet PT are placed on the lifting table 2, the lifting table is raised by driving the lifting device. (See Fig. 3, 1) The presence or absence of the ream marker tape is detected by the sensor _C1 attached to the lower surface of the insertion head 4, which is stopped at the standby position, and the elevating device is stopped. (See FIG. 3, FIG. 2) Next, the lifting bellows 53 is moved forward by operating the cylinder 56, and is inserted into the position below the ream marker tape. Next, when the bellows frame is raised by operating the cylinder 54, the tip of the ream marker tape T inserted between the paper sheets (the part that protrudes from the stacked paper) is lifted by the lifting bellows and placed in the insertion head. It is adsorbed by the suction hole 4a. This is a suction pump (vacuum pump) for the suction hole 4a.
Since the tape is connected to the insertion head, the tape is attracted to the lower surface of the insertion head by the intake air. Thereafter, both cylinders 56 and 54 return to their original positions and stop. (Same state as in FIG. 3, FIG. 2) Next, the insertion bellows 5 protrudes along the upper surface of the ream marker tape adsorbed to the lower surface of the insertion head. (Refer to Fig. 3) This is because the bellows 5 is guided to the bellow guide 51 by operating the cylinder 52, and the tip of the bellows protrudes while slightly pressing the top surface of the tape, and in this state, the stacked papers are removed. inserted in between. (See FIG. 3 and 4) Next, the rotation of the motor M in FIG. 3 rotates the crank 44, and the insertion head is inserted between the insertion bellow and the ream marker tape as shown in FIG. 3. Here, the paper above the ream marker tape and the paper below the ream marker tape are accurately distinguished using the ream marker tape as a boundary. The crank stops at the lower fulcrum of the crank when the head is inserted.

Next, when the insertion head is inserted, the insertion bellows 5 retreats, passes through the paper, and stops at the original position. At the same time, the head frame equipped with the insertion head and bellows is rotated by the rotation of the cam drive motor _M1 , and the cam C rotates, lifting the entire head frame part through the rack and pinion, and as shown in FIG. Lift up the top paper. Next, the gripper 6 is driven by the drive device to grip the guide rod 61.
Move forward along the fork part 6 of the gripper body.
If the gripper cylinder 4a hits the inserted paper while it is being lifted by the insertion head, the gripper cylinder will stop.
(See Fig. 3, 7) Then, motor _M1 rotates again,
When this motor stops at the low point of the cam, Fig. 3-8
As shown in the figure, the insertion head uses the weight of the entire head frame to press down on the paper below so that it does not shift, and the gripper cylinder operates to grip the paper as much as it is lifted between the fork and the pressing plate. ,
While blowing out air from the tip of the fork section below the gripper, the gripper cylinder moves further toward the automatic packaging machine and feeds it into the other packaging machine, etc. (FIG. 3, 9) At this point, the insertion head remains as shown in FIG. 3, with the ream marker tape adsorbed. Next, the motor M provided in the head frame rotates, and the crank stops at the most retracted position l of the insertion head, that is, the top dead center of the crank.

The ream marker tape moves backward while being attracted to the insertion head until the crank stops at point L from point K in the forward position. When the crank stops at point L, the solenoid valve of the air circuit is switched through the vacuum hole of the insertion head ( (Air circuit omitted) Air is blown out and the ream marker tape is separated from the insertion head and falls into the gutter that is received below.The ream marker tape flows down the gutter and enters the ream marker tape receiving tray. During the process, a phototube detects that the ream marker tape has fallen and moves on to the next operation.

Next, upon receiving a signal that the ream marker tape has fallen, the insertion head rotates the motor M, causing the crank to stop at the standby position M point, and the lifting platform is raised by the drive of the lifting device, and the tape is placed on the underside of the insertion head. The ream marker tape detection sensor stops the lifting platform and one stroke ends. This operation is repeated in sequence to automatically feed each unit of paper.

Effects of the Invention According to the present invention, the paper can be accurately separated along the ream marker tape inserted into the stacked paper,
Moreover, since only the paper above the tape can be supplied to the next process, there is an advantage that paper feeding can be carried out automatically, accurately and quickly.

[Brief explanation of drawings]

Figure 1 is an overall external view, Figure 2 is an external view of the insertion head and bellows part, Figure 3 is an explanatory diagram showing the operating sequence, and Figure 4 is an explanatory diagram showing the relationship between the insertion head and the ream marker tape. , FIG. 5 is a diagram of papers stacked on a pallet. Reference numeral 1 indicates a pallet elevating and lowering sheet feeding section, 2 a pallet elevating table, 3 a separation supply section, 4 an insertion head, 5 an insertion bellow, and 6 a gripper.

Claims (1)

[Claims] 1 Consists of a pallet elevating and lowering paper feeding section that places stacked papers on a pallet and is movable up and down, and a separation supply section that separates the stacked papers vertically using a ream marker tape. The supply section is equipped with a wedge-shaped insertion head equipped with a sensor for detecting the presence or absence of a ream marker tape and a suction hole for suctioning the tape, and an insertion bellow that is inserted into the paper along the suction ream marker tape. The head frame is provided so as to be movable back and forth and up and down, and the insertion bellows and head separate stacked papers vertically at the ream marker tape section, and pinch the separated paper ends for the next process. An automatic paper feeding device characterized by being equipped with a gripper that moves the paper to the side.