JPH0227255B2 - SHIITOBUTSUNOKYUSOSOCHI - Google Patents

Description

[Detailed Description of the Invention] <Technical Field> The present invention is applied to the interior of a packaging machine, printing machine, paper folding machine, or other machine that handles sheet materials one by one, which is attached to the upper part of a table lifting device for stacking sheet materials. The present invention relates to a sheet material feeding device for feeding sheet materials one by one.

<Prior art> Figure 4 shows a conventional table lifting device for feeding sheet materials (cut paper) one by one into packaging machines, printing machines, paper folding machines, and other machines that handle sheet materials one by one. The sheet material feeding device B is shown attached to A.

The trailing edge of the topmost sheet M stacked on the lifting table of the table lifting device A is turned up by the vacuum pad 1b of the sheet turning device 1 having an air blowing function, and the sheet object is turned up from the air injection port 1d. Air is blown from behind so as to face the trailing edge of M and substantially parallel to the second sheet object to float the turned-up sheet object M, and the front upper surface of this lifted sheet object M is A vacuum-type feed roller 2 having a large number of air suction holes provided on the surface and sucking air only when it reaches the lower position rotates and feeds the sheet material M while sucking it.

To be more specific, the sheet material feeding device B presses the center of the rear edge of the top stacked sheet material M with the spring plate 1a of the sheet material turning device 1, and the spring plate 1a
2 Bakyum Pads 1 just in front of me
The structure is such that the trailing edge of the uppermost sheet M is turned over by suction by the lever b and the vacuum pad 1b is raised by the action of the ejector 1c. The air injection port 1d is opened when the vacuum pad 1b rises, and air is blown horizontally to the lower side of the trailing edge of the turned-up sheet object M, thereby lifting the sheet object M. The suction of the vacuum pad 1b is as follows.
The air injection port 1d is designed to stop blowing air almost simultaneously.

Therefore, the sheet material feeding device described above is composed of a sheet material turning device 1 having an air blowing function and a vacuum type delivery roller 2. This device flips up the trailing edge of the sheet and blows air toward the flipped up trailing edge from behind, approximately parallel to the stacking surface, to lift the sheet. This device has an air suction hole that sucks air only when it reaches the lower position, and rotates to feed the sheet while sucking the front upper surface of the sheet that floats up due to the blown air.

For this reason, with breathable paper such as Japanese paper, there is a drawback that not only the top paper but also several sheets are sucked up at once, and since the vacuum pad is pressed against it to create suction, the surface may have wrinkles or other irregularities. In the case of certain types of paper, there was a drawback that there was an extremely high probability of not being able to turn the pages.

This drawback is related to sheet turning, so the improvement can be made by separating the sheet turning device, which does not have an air blowing function, and the air blowing device.
The former is required.

<Object of the invention> The present invention was devised in view of the above points, and
By using adhesive or adhesive tape,
Be sure to turn up breathable paper, paper with wrinkles or other irregularities on the surface, and any other type of cut sheet material one by one, and handle it one by one in packaging machines, printing machines, paper folding machines, and other sheet materials. The present invention provides a feeding device for feeding sheets into a machine.

<Structure of the Invention> The sheet object feeding device of the present invention includes a sheet object turning device that turns up the trailing edge of the sheet object, and a rear section that is substantially parallel to the stacking surface toward the turned up trailing edge of the sheet object to be turned up. The sheet has an air blowing device that blows more air to make the sheet object float, and a sheet that has a number of air suction holes provided on the outer circumferential surface that suctions air only when it reaches the lower position. The sheet object turning device consists of a vacuum-type feed roller that rotates and feeds the sheet object while sucking the front upper surface of the object, and the sheet object turning device has a tape feeding shaft;
A tape winding shaft, a tape winding shaft driving means for intermittently rotating the tape winding shaft, and a tape winding shaft driving means for intermittently rotating the tape winding shaft, and a tape winding shaft that is attached to the tape feeding shaft and is fed out from the adhesive tape to the tape winding shaft. A tape pressing tool that presses and adheres the adhesive surface of the tape to the upper surface of a large number of stacked sheets with the lower end surface, a tape feeding shaft, a tape winding shaft, a tape winding shaft driving means, and a tape pressing tool. It consists of a movable bracket that supports the tape winding shaft, and a movable bracket vertical movement means that is attached and fixed to a required fixed side and moves the movable bracket up and down. A unidirectional rotation transmission device is provided in which a rack is urged and a pinion meshed with the pinion is attached to a movable bracket, and of the rotation of this pinion, only the rotation in the direction in which the tape winding shaft rotates for winding is transmitted to the tape winding shaft. A striker is attached to the fixed bracket, and is interposed between the pinion and the tape winding shaft, and when the movable bracket rises, the striker stops the rack at a rising position a required distance before the rising stop position of the movable bracket. It is characterized by:

<Example> An example of the sheet material feeding device of the present invention attached to a table lifting device is shown in FIG.
This will be explained with reference to FIGS. 2 and 3.

First, the configuration of the table lifting device A will be explained based on FIG. The table elevating device A stacks sheet materials (cut paper) M cut to a predetermined size on the elevating table 3, and as several sheet materials M are fed in, each time the table elevating device A raises the sheet material M by the thickness thereof.

To be more specific, when the sheets M stacked on the lifting table 3 are fed out one by one from the top, a sensor (not shown) is turned on, the clutch of the electromagnetic clutch brake 4 is turned on, and the brake is turned off. ', the motor 5 with a reducer is driven, and its rotation is transmitted to the chain transmission device 6, and the rotation of the chain transmission device 6 is further transmitted as the rotation of the screw shaft 8 via the bevel gear 7. Since the screw shaft 8 is screwed with a nut 10 fixed at the center of both ends of the lifting table 3 which is guided up and down by a guide shaft 9, the lifting table 3 is moved upward. When the elevating table 3 is moved up by the thickness of the five sheets of paper sent out, the sensor (not shown) turns off, the electromagnetic clutch brake 4 is de-clutched, the brake is applied, and the motor 5 with a speed reducer is turned off. is starting to stop driving.

The sheet material feeding device B is a table lifting device A.
It is attached to the upper part of the machine and consists of a sheet turning device 11, an air blowing device 12, and a vacuum type delivery roller 2. Air blowing device 12
, only the air injection tube attached to the lower part of the sheet turning device 11 is shown, and air is blown from the rear, approximately parallel to the stacking surface, toward the trailing edge of the sheet turning device 11 to turn the sheet object. It is a levitation device and is not fundamentally different from the conventional one.
In addition, the vacuum type feed roller 2 has a large number of air suction holes provided on the outer circumferential surface and sucks air only when it reaches the lower position. It is a device that rotates and feeds sheet materials, and is not fundamentally different from conventional devices.

2 and 3 show the sheet flipping device 11
FIG. 1 is an enlarged front view and a sectional view of a main part, and the sheet object turning device 11 is configured to have a function of turning up the trailing edge of the topmost sheet object stacked. It has the ability to reliably flip up breathable paper, paper with wrinkles or other irregularities on its surface, and any other type of sheet material by using adhesive or adhesive tape, unlike conventional methods.

To be more specific, a fixing bracket 111 is fixed to the upper frame of the table lifting device A by a fastener 112 such as a bolt so as to be adjustable in height and in the forward and backward directions of feeding. This fixed bracket 111 is equipped with rods 113, 113.
3, 113, a movable bracket 114 is guided up and down. A motor 115 with a speed reducer is attached to the fixed bracket 111, and an eccentric cam 116 attached to the output shaft of the motor 115 is attached to the movable bracket 11.
It is fitted into a long groove 117 provided on the 4th side,
When the motor 115 rotates once, the movable bracket 114 moves up and down once. This motor 115 is designed to rotate when the movable bracket 114 is at the highest position, and when it has made one rotation, a limit switch (not shown) detects this and stops the rotation of the motor 115. Therefore, the motor 115
The movable bracket 114 is constructed so that the period from the start of rotation to the stop thereof corresponds to the process in which the movable bracket 114 descends from the raised position and stops again at the raised position. The movable bracket 114 has a tape feed shaft 1.
18 and a tape winding shaft 119, and a tape winding shaft rotating means for rotating the tape winding shaft 119 is further provided. This tape winding shaft rotating means includes a rack 121 and a pinion 12.
2 is transmitted to the tape winding shaft 119 via a one-way clutch 123 that rotates only in the direction of arrow Y, and further via an endless rope. In this case, rack 121 and pinion 1
22 are both attached to the movable bracket 114, so that when the rack 121 rises, the striker 125 that comes into contact with the rack 121 and prevents the rack 121 from rising is attached to the fixed bracket 111.
It is installed more freely. Further, when the movable bracket 114 is lowered, the rack 121 is biased by a spring 126 so as to return to the raised position. 127 is an end plate. A tape pressing tool 128 made of a plate is suspended from the tip of the movable bracket 114.
A baffle plate 129 is attached further to the rear, and this baffle plate 129 serves to allow the air injected from the air injection pipe 12 of the air blowing device to escape laterally when the movable bracket 114 is lowered. Then, the adhesive tape T attached to the tape feed shaft 118 is guided to the lower end surface of the tape pressing tool 128 by the tape guides 130 and 131, and the tape guide 124 fitted into the one-way clutch 123 The tape is guided so as to be wound around the tape winding shaft 119. In this case, the non-adhesive surface of the adhesive tape T is
is guided with its back to the bottom.

Next, the effect will be explained.

When the motor makes one rotation, the movable bracket 114 in the raised position is lowered by the action of the eccentric cam 116, and then raised again and stopped. Movable bracket 11
4 descends, the adhesive tape T guided to the lower end surface of the tape pressing tool 128 is moved by the tape pressing tool 128 to the rear end in the feeding direction of the top sheet M loaded on the lifting table 3 of the table lifting device A. When the movable bracket 114 is raised, the sheet M can be turned up one by one. When the trailing edge of the sheet object M is turned up, the baffle plate 129
escapes onto the air injection pipe 12, and the air ejected from the air injection pipe 12 is directed toward the trailing edge of the sheet object M and is blown approximately parallel to the second sheet object. The sheet object M floats up.
The vacuum type feed roller 2 rotates while constantly adsorbing the floating sheet material M.
The sheet material M is fed in while adsorbing the upper surface of the material.

When the movable bracket 114 is raised, the rack 121 and the pinion 122 that mesh with the rack 121
is raised together with the movable bracket 114, and the striker 125 begins to push down the rack 121 from the time when the movable bracket 114 returns to the required height before the raised stop position. Therefore, the pinion 122 is rotated, and the one-way clutch 123 transmits this rotation to the tape winding shaft 119, so that the adhesive tape is slightly wound onto the winding bobbin attached to the tape winding shaft 119. . Therefore, a new tape adhesive surface is pulled out from the lower side of the tape pressing tool 128. Therefore, as described above, when the motor 115 makes one revolution again, the sheet material M can be turned over with the new adhesive surface of the tape.

Note that when the movable bracket 114 is lowered,
The rack 121 and the pinion 122 that mesh with it are lowered together with the movable bracket 114, and the rack 121, which had been pressed down by the striker 125, returns to the raised position by the bias of the spring 126, and at this time,
The pinion 122 will rotate in the opposite direction, but since the transmission of this rotation is cut off by the one-way clutch 123, the tape winding shaft 119 will not rotate back.

<Modifications> The sheet material feeding device of the present invention includes the following modifications as part of the technical field of the invention described in the claims.

In the tape winding shaft driving means, the one-way clutch 123 may be directly connected to the tape winding shaft 119.

The movable bracket vertical movement means may use a cylinder device instead of a motor.

<Effects of the Invention> As explained above, according to the sheet material feeding device of the present invention, the sheet material turning device has the following features: a tape feeding shaft, a tape winding shaft, and a tape pressing tool are attached to the movable bracket; The non-adhesive surface of the adhesive tape is guided to the lower end surface of the tape pressing tool, and a tape winding shaft driving means is attached to the movable bracket. The rotation is transmitted to the tape winding shaft via a one-way clutch, and when the movable bracket reaches the raised position, the striker prevents the rack from rising, causing the pinion to rotate, and this rotation of the tape winding shaft causes the tape to move. The structure is such that the adhesive surface of the adhesive tape guided to the lower end of the pressing tool is renewed, so it can reliably turn over breathable paper, paper with wrinkles or other irregularities on the surface, and any other type of cut sheet material. It is possible to reliably feed one sheet at a time into packaging machines, printing machines, paper folding machines, and other machines that handle sheet materials one by one.

[Brief explanation of drawings]

FIG. 1 shows a side view of a sheet material feeding device attached to a table lifting device of the present invention. FIGS. 2 and 3 are an enlarged front view and a sectional view of a main part of the sheet turning device. FIG. 4 shows a side view of a sheet material feeding device attached to a conventional table lifting device. M... Sheet object (cut paper), A... Table lifting device, B... Sheet object feeding device, 11... Sheet object turning device, 12... Air blowing device (air injection tube), 2... ...Bakyume type feed roller,
114...Movable bracket, 115...Motor with reducer, 118...Tape feed shaft, 119...
...Tape winding shaft, 120...Rack, 121...
...Pinion, 122...One-way clutch, 1
25...Striker, 126...Spring, 128
...Tape pressing tool, T...Adhesive tape.

Claims (1)

[Scope of Claims] 1. A sheet object turning device that turns up the trailing edge of a sheet object, and a sheet object turning device that blows air toward the turned up trailing edge of the sheet object from behind substantially parallel to the stacking surface. It has a floating air blowing device and a number of air suction holes provided on the outer circumferential surface that suck air only when it reaches the lower position, and rotates while adsorbing the front upper surface of the sheet object that floats up with the blown air. The above-mentioned sheet turning device consists of a tape feeding shaft,
A tape winding shaft, a tape winding shaft driving means for intermittently rotating the tape winding shaft, and a tape winding shaft driving means for intermittently rotating the tape winding shaft, and a tape winding shaft that is attached to the tape feeding shaft and is fed out from the adhesive tape to the tape winding shaft. A tape pressing tool that presses and adheres the adhesive surface of the tape to the upper surface of a large number of stacked sheets with the lower end surface, a tape feeding shaft, a tape winding shaft, a tape winding shaft driving means, and a tape pressing tool. It consists of a movable bracket that supports the tape winding shaft, and a movable bracket vertical movement means that is attached and fixed to a required fixed side and moves the movable bracket up and down. A biased rack and a pinion meshing with the pinion are attached to the movable bracket, and a one-way clutch transmits only the rotation of the pinion in the direction in which the tape winding shaft rotates for winding to the tape winding shaft. A striker which is interposed between the winding shaft and which raises and stops the rack at a raised position a required position before the raising stop position of the movable bracket when the movable bracket rises is attached and fixed to the required fixed side. A sheet material feeding device characterized by: