JPS59182136A - Device for separating and transferring uppermost sheet of laminated sheet or sheet-shaped material - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention (a) Technical Field The present invention relates to a device for separating and transporting the uppermost sheet of a laminated sheet or a sheet-like material, and more specifically, a device for separating and transporting the uppermost sheet of a laminated sheet or a sheet-like object, and more specifically, a device for separating and transporting the uppermost sheet of a laminated sheet or a sheet-like object, and more specifically, a device for separating and transporting the uppermost sheet of a laminated sheet or a sheet-like object. The present invention relates to a device for separating and transporting a laminated sheet or the uppermost sheet of a sheet-like material by means of a movable suction section in which the movement of supported suction sections is simultaneously controlled.

(1) Prior art This type of device is disclosed in, for example, German Utility Model Publication No. 17822.
As described in No. 67, this device requires an air nozzle in order to transfer the material to a transfer roller provided at a later stage. However, there is a drawback that the air flow generated from the air nozzle attracts the upper plurality of laminated sheets, making it difficult to separate the sheets.

C) Purpose Therefore, the present invention has been made in order to eliminate such conventional drawbacks, and it is possible to reliably separate the sheets, and to simply transfer the sheets to the conveying roller in the latter stage. It is an object of the present invention to provide an apparatus for separating and transporting the top sheet of a stacked notebook or sheet-like material.

2) Structure and Effects of the Invention According to the present invention, this object can be achieved by the features set forth in claim 1.

In the device according to the invention, the movable suction member first performs a stroking movement, whereby the uppermost sheet is separated from the stack. This stroke motion is followed by a pulsating motion of the suction section, and if a plurality of sheets are inadvertently suctioned by the suction section, they are screened out, and the sheets are periodically subjected to alternating stroke motion and falling motion. This allows the sheet to be guided to the subsequent transport roller. The pulsating movement of the suction part can be increased by enlarging the active surface of the periodically changing air pressure prevailing at the connection between the suction part and the valve pump by means of a membrane connected to the suction part.

In order to adjust the size of the stack, it is also possible to provide an adjustment device connected to an external drive or an adjustment table capable of controlling the height of the stack.

Further, in the embodiment according to the present invention, the stacking table is tilted with respect to the transport direction, and a stopper surface is provided at the rear part to support the stacking of sheets, thereby making it possible to further reliably separate and transport the sheets. It becomes possible. In this way, very thin, air-permeable sheets as well as plastic sheets etc. that adhere to each other due to static electricity can likewise be reliably separated.

The transfer speed in the direction of the transfer roller provided at the rear stage can be increased by providing a stopper in the front part or by using a stacking table inclined in the transfer direction.

In this embodiment, replenishment of sheets during the drive is also preferred.

In any of the embodiments of the present invention, the transported sheet can be transported between the transport rollers that are driven once in the drive mode of the subsequent device or to the end of the lamination side, in which case the movable suction unit and the transport No significant frictional force is generated on the sheet, and no wear phenomenon occurs due to friction. This excellent effect can be obtained.

Example The present invention will be described in detail below according to embodiments shown in the drawings.

In each figure from FIG. 6 to FIG. 9, reference numeral 101 indicates a valveless pump, 102 a pump cover, 103 a connecting part,
104 is a suction cylinder, 105 is a pulsating suction piston, 106 is a stopper, 107 is a suction rubber, 108 is a top sheet, 109 is a laminated sheet, 110 is a storage container, 1
11 is a stopper surface, 112 is another stopper surface, 113 is an adsorption gas pressure chamber, 114 is a transfer roller, and 115 is a T-shaped connection portion.

In the embodiment shown in FIG. 1, the cover 102 is provided with only connections and without any valves. This is a technically simple configuration and provides an inexpensive method.

The backflow prevention valve V1. Using a pump cover with V2 makes it possible to adjust the transfer in different ways. In this case, the surface connections of the pump cover are integrated via a single-shaped connection 115.

In the device configured in this manner, the storage container 110 is arranged with a slight inclination toward the rear, and the laminated sheets in contact with the rear stopper surface 111 are laminated to a height of Z. The adsorption section which is placed in contact with the laminated sheet is placed in the middle of the sheet at the front end of the sheet, and the angle β between the axis of this adsorption section and the lamination surface is selected to be smaller than 90°.

In the non-operating position where the pump 101 is not operated, the suction surface of the suction rubber 107 fixed to the lower end of the suction piston 105 is placed flat with the top sheet of the laminated sheet (Fig. 3). reference). When the membrane pump 101 is operated, positive pressure and negative pressure are generated alternately in the adsorption pressure chamber 113 in synchronization with the pump frequency, and the uppermost sheet is lifted by the adsorption rubber 107. During this suction mode, the suction piston, together with its top sheet, makes a stroke movement as the stopper 106 contacts the stopper surface 112 (FIG. 4). In this case, the stroke of the piston is A.

The part up to this point is the separation process, and the separated sheets are
Normally, it is transferred to another device and transported, but in the present invention,
In this case, the positive pressure and negative pressure modes continue alternately, during which the suction piston 105 pulsates with an amplitude A'. In this case, the notes adsorbed to the suction rubber are momentarily released in the positive pressure mode, and are attracted in the subsequent suction (negative pressure) mode.

As is clear from the vector diagrams shown in FIGS. 6 to 9, the sheets separated by this pulsation are transferred to the transport roller 111.
(Figure 1), so it will move forward in the X direction.

After a predetermined period of time has elapsed, the sheet can be removed from the suction section 107 without removing the suction section or rendering the pump inoperable.

In the embodiment shown in FIG. 10, a stacking table 2 on which sheets 3 are stacked is arranged in the apparatus 1. This stacking table 2 is inclined at an angle α with respect to the horizontal plane, and a stopper surface 2a is provided at the rear step.
, and the laminated sheet 3 @ has this stopper surface 2 due to gravity.
a. The stacking table 2 is a so-called adjustment table, and can be automatically moved in the direction perpendicular to the stacking surface by a sensor (not shown) via an adjusting screw 4, so that the stacking surface is always maintained as indicated by Ho in the figure. I am trying to maintain the same level.

The movable suction part 6 is held still on the uppermost sheet 3a of the laminated sheet 3 by its own weight and by the provision of the pressing spring 5. The suction portion 6 is coupled to a suction lower a having a central opening IC formed at the lower end of the movable piston 7. The piston 7 is slidably supported in the axial direction in a guide cylinder 8, into which a threaded screw 9 that enters the notch 71) of the piston 7 is screwed. The guide cylinder 8 is 1 fixed to the device itself.
The upper end of the cylinder is connected to a coupling part 11 provided with a central opening 11a and screwed into the guide cylinder 8. This coupling part 11 also serves as a support part for the pressure spring 5 arranged inside the piston 7.

A connecting portion 11 is connected between the inside of the guide cylinder 8 and the valveless membrane pump 1.
It is inserted into the connection part 12 that connects the 3. Membrane pump 1
The membrane 16 of No. 3 is arranged between the -F section 14 and the lower part 15, and is connected to the crankshaft 17 by a screw 16a.

The crankshaft 17 is supported on the lower part of the membrane pump, and an eccentric plate 18 is driven in the direction of arrow B by a single drive motor (not shown).
This causes periodic movement. Of course, instead of the membrane pump shown, it is also possible to use other valve piston pumps or other pumps capable of generating cyclically positive and negative pressures.

The second part 14 of the pump 13 is a connecting part i4a with the connecting part 12.
It has a knob 14b on the outside that functions as an exhaust section, and this pipe 141) can be closed by a hemispherical valve body 19 made of elastic plastic. Valve body 19
The protrusion 19a is a protrusion 20a of a bifurcated swinging leno<-20.
The two-pronged lever 20 is given counterclockwise sliding ability by the action of the screw 9 coil spring, so that the valve body 19 can be fitted into the recess formed in the vibrator 1.
41] and close it. Forked, ku-
The arm 20b of 20 is operated by an operation lever -21 which can be operated from the open part 1a of the device 1.

This operating lever 21 can be controlled by a control device of a device provided downstream of the separation device, for example, by means of an electromagnetic device (not shown). In this case, when the valves 141), 19 are opened, the separation and transfer process is immediately interrupted.

Furthermore, disposed downstream of the stacking table 2 in the transport direction F are transport rollers 22, 23, which are mounted on shafts 24.25. These transfer rollers 22 and 23 are constantly rotated in the direction shown in the figure or are driven intermittently by a subsequent device at a predetermined clock. In the case of intermittent driving, the recording paper can be correctly placed on the recording cylinder, as in the case of a copying machine, for example.

The transport rollers 22, 23 are surrounded by guide plates 26, 27 which guide the sheets to be transported.

11 and 12 illustrate the movement of the suction unit 6 and the sheet 3a suctioned by the suction unit. In this case, the movable suction part 6 first comes to rest on the uppermost sheet of the laminated sheet 3 under the action of the pressure spring 5. After the exhaust valve 19 is closed (FIG. 10), or after the pump 13 is activated if such an exhaust valve is not provided, the sheet 3a is attracted to the suction section. In that case, depending on the type of non-return valve, the opening 7C of the piston 7 is closed. Negative pressure is generated inside the guide cylinder 8. This negative pressure acts on the rear end surface (FIG. 10) of the piston cross section 7d, so that the piston 7 moves from the level I]O to the guide cylinder 8 and the membrane pump 13 against its own weight and the biasing force of the pressure spring 5. It is lifted by a stroke H1 corresponding to the volume ratio of .

During the continued positive pressure mode of the diaphragm pump 13, the piston 7 is unable to follow the movement of the pump without delay, thereby creating a volume difference between the pump stroke and the piston stroke. As a result, positive pressure is generated in the connecting portion 12, which is under negative pressure due to the weight of the piston and the action of the pressing spring 5.

As a result, air is discharged via the non-return valve formed by the seat 3a and the movable suction part 6. Due to this, combined with the inertia of the movable adsorption part, the piston 7 cannot quickly reach the end position on the side of the laminated sheet during the subsequent stroke of the membrane pump 13, and furthermore, the piston 7 cannot reach the end position on the side of the laminated sheet quickly, and the stroke corresponding to the volume ratio of the pump 13 and the guide cylinder 8 H.

cannot move for the entire stroke. After a short transient time, a periodic piston movement with approximately the same amplitude A is obtained during the entire operating time teO, so that the suction part 6 moves 1-1 m at a frequency corresponding to the pump frequency f. It moves back and forth between i n and l-1 ma y . The magnitude of the amplitude A to I-1may, l (min is determined by (a) the volume ratio of the pump, the cylinder guide, and the connection between them, (1)) the inertia of the movable suction part and the return acting on it. Type and strength of force (for example, biasing force of a pressure spring), (C) pump frequency, (d
) The negative pressure that prevails in the suction section is determined by factors such as the relative influence acting on the suction of the cylinder and the lifting of the piston, and desired control can be achieved by appropriately selecting these factors.

For example, using a pressure spring with a weak Tanuhiko Taira characteristic, the stroke l(
The max is about 10-20mm and the pump frequency is about 20-3
Using a conventional telescopic suction device at 0 Hz, favorable transfer characteristics were obtained for separating and transporting paper sheets of different weight per area as well as thin plastic sheets.

Furthermore, in the separation and transfer device according to the present invention, the adsorption characteristics and separation characteristics are as follows when using an adsorption section having an elastic adsorption plate 6a as large as possible, as shown in Figs. It can be further improved. Due to its elasticity, the suction plate 6a comes into close contact with the topmost sheet of the stack even if the sheets are uneven or angularly misaligned, and provides a large suction surface due to the negative pressure. Furthermore, even if a small distance remains between the suction plate 6a and the uppermost seam 33, sufficient negative pressure can be generated for the normal suction process due to the air flowing in at a relatively high speed with the thick Hiko suction plate. can.

The air pressure governing the connecting portion 12 can be controlled by expanding the effective surface 7d of the piston, which will be described later, or by arranging a membrane combined with the piston 7 in the air passage.
It is possible to relatively influence the stroke movement of the

In particular, as is clear from FIG. 11, when the movable suction portion 6 performs the above-described movement, the uppermost sheet 3a of the laminated sheet 3 first moves from the laminated portion to the H.

can be lifted a distance of Subsequently, in synchronization with the pump frequency, a stroke motion along the moving direction H of the movable suction section 6 is performed in addition to a falling motion along the gravity direction G. When the axial direction of the suction part is inclined by a predetermined angle β with respect to the gravity direction G, a composite movement in the transport direction F is generated by the above-described falling movement and stroke movement.

In the embodiment illustrated in FIGS. 10 and 11, the transport direction F
is tilted at an angle α with respect to the horizontal. This inclination in the conveying direction F coincides with the inclination of the lower surface of the suction part and the inclination of the laminated surface, and this inclination allows the laminated sheet to be held by gravity,
Thereby, the separation of the separator can be ensured.

A further advantage of the invention is that the conveyed sheet does not have a frictional connection with the suction part 6 during the above-mentioned stroke and falling movement. It is therefore possible to move or hold the separated sheet in a predetermined direction provided by the suction section substantially without friction by applying additional force without shutting off the pump. This has implications when the separated sheets are placed on a stationary suction roller, and at the same time, as will be explained later with reference to FIG. It becomes possible to transport a sheet of the same size and to bring the sheet into contact with the measurement guide during transport.

As shown in FIG. 13, sheets 3a of various sizes are arranged on the stacking table 2. The suction part 6 is arranged so as to be able to suction the sheet 3a that is in contact with the rear end 2a and the side end 2b. Its conveying direction F' is offset by an angle γ with respect to the original conveying direction F, which results in a conveying component F'' directed toward the lateral edge 2b.The sheet being conveyed is therefore independent of its format. The transfer rollers 22, 2 are brought into contact with the end portion 2b during transfer, and are aligned therewith.
I am guided by 3.

Similarly, as is clear from FIG. 13, another suction section 6' can be arranged outside the suction section 6 to bridge the long transfer path up to the first transfer rollers 22 and 23. Similarly, a plurality of suction units 6, 6'' may be arranged adjacently to convey sheets of a wide format.

FIG. 14 shows another embodiment of the invention, in which the stacking table 28 is inclined at an angle α with respect to the horizontal direction. In this case, the stopper surface 28a is the laminated sheet 3
installed in the front part of the Adsorption device 2 having adsorption section 30
9 is fixed to a swinging member 31 that can swing around a shaft 32. This rocking member 31 is subjected to the action of a tension spring 33, whereby the rocking member 31 tends to pivot counterclockwise and comes into contact with a stop 34 fixed to the device.

Due to the rotational movement, the suction part 30 is separated from the laminated surface in the non-operating state. During this mode of operation it becomes possible to replenish the laminated sheet 3 with other sheets.

In this case, the guide plate 35 attached to the swinging member 31 prevents the replenished sheets from jamming behind the suction section 30. Furthermore, an inclined surface 30a is formed in a portion of the suction portion 30 that protrudes from the guide plate 35 in the non-operating state.

The swinging motion of the swinging member 31 has the effect of increasing the initial stroke movement of the suction section. If it is not necessary to increase the initial stroke, l(min) shown in Figure 12 can be decreased accordingly, thereby increasing the degree of freedom when determining the amount that influences the stroke of the suction part. be able to.

An electromagnet 36 coupled to the arm 3L of the swing member 31 by a rod 37 is used to generate the swing motion. This electromagnet 36 is activated briefly by suitable means before the pulsating suction device 29,30 is activated and is shut off again after the suction device has been activated. The connection 38 to the suction device 29, 30, which is mounted on the swinging member 31, is led to a hollow swinging shaft 32.

The inclination β of the stroke direction H with respect to the direction of gravity G is selected in this case as follows. That is, one sheet is separated from the laminated portion by the stroke movement accompanied by the swinging of the swinging member 31, is lifted along the rim surfaces 28a and 28B, and is then released from the falling movement along the direction of gravity G. The separated sheet 3a is selected to have a movement component in the transport direction F. By this transfer, the sheet is transferred to the transfer rollers 22 and 23 disposed in the guide path formed by the guides 26 and 27.
guided by.

In the example shown in FIG. 15, a membrane 39 is fixed to the upper end of a pipe-shaped piston 37 that supports the movable part 6 via a hollow 37a. This membrane 39 is a guide cylinder 40
The guide cylinder 4
It is protected by a cover 42 which is secured by a screw 41 and connected to the connection part 12 . The space formed between the membrane 39 and the cover 42 is connected to a valveless pump, while the space in the lower part of the gland is in communication with outside air via the exhaust port 40b.

In this configuration, the pump pressure acts on an area much larger than the cross-sectional area of the piston 37, so the negative pressure required for the suction portion 6 becomes even stronger and causes the piston 37 to move.

As mentioned above, the movement characteristics shown in FIG.
2 is improved so that it acts more strongly on the movement of the suction part.

In the example shown in FIG. 16, the holding part 43 fixed to the device
A ring body 44 is provided in which two membranes 45, 46 are arranged. The lower membrane 45 is held within the ring body 44 by a screw ring 47 and the upper membrane 46 by a screw cap. An annular support 50 for supporting the movable adsorption section 6 is fixed to the membrane 45 by a nut 49. The membrane 46 has a screw 51
is connected to a bolt-shaped plunger 52 which fits into a magnetic coil 53 arranged on the screw cap 48. The magnetic coil 53 is connected to a lead wire 54.
55 to an AC power source (not shown);
This constitutes a membrane pump necessary for driving the top of the laminated sheet 3, and this membrane pump can be fitted into the apparatus together with the adsorption device as a unit, or can be removed from the apparatus for maintenance purposes. Of course, it is also possible to house the pipe-shaped support body 50 that supports the movable suction part 6 in the guide cylinder as in the example shown in FIG.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing the schematic structure of the first embodiment of the device of the present invention, Fig. 2 is a sectional view showing the structure of another embodiment of the adsorption section, and Figs. 3 to 6 are sheet separation. FIG. 7 is an explanatory diagram showing the suction and conveyance state, FIG. 8 is a cross-sectional view showing the structure of the suction section showing suction and conveyance, and FIG. 9 is a cross-sectional view showing the suction and conveyance state. An explanatory diagram showing the state of transportation,
FIG. 10 is a sectional view showing the structure of another embodiment of the present invention, FIGS. 11 and 12 are explanatory diagrams explaining the state of suction and conveyance in the embodiment of FIG. 10, and FIG. 13 is a suction section. FIG. 14 is a sectional view showing the structure of still another embodiment of the present invention, and FIGS. 15 and 16 show different embodiments of the suction part. FIG. 2... Lamination table 3... Lamination sheet 6...
Adsorption part 7... Piston 8... Guide cylinder 12... Connection part 13... Membrane pump 16...
・Membrane 17... Crankshaft 20... Swinging lever 21... Operating lever 22, 23... Transfer roller 10
1... Pump 102... Pump cover 10
3... Connection part 104... Adsorption cylinder 10
5... Piston bottom 07... Adsorption rubber 113...
・Adsorption or pressure chamber 114...transfer roller agent Takashi Kafuji 241, patent attorney

Claims (1)

[Scope of Claims] 1) Separating the uppermost sheet of a laminated sheet or a sheet-like object by a movable suction part whose movement is controlled by a negative pressure that adsorbs the sheet and which is slidably supported along a guide. , in the device for transferring, the movable suction part (6
, 30) is connected to a valveless pump that generates periodically varying negative and positive pressure modes at the connection (12) between the adsorption part and the pump, and is also movable along the guides (8, 40, 45). The moving direction of the suction part (6, 30) is inclined at a predetermined angle (β) with respect to the direction of gravity ((2), so that the movement direction of the movable suction part (6, 30) is inclined at a predetermined angle (β), so that the sea caused during the negative pressure mode of the movable suction part) (3a ) and the falling movement that occurs during the positive pressure mode, the sheet is transported in a predetermined movement direction (F), separating and transporting the uppermost sheet of a laminated sheet or sheet-like object. Device. 2) The suction part (6, 30) is guided along a guide cylinder (8, 40) connected to a valveless pump (13), and a piston (7° 37) provided with a central opening (7C).
). 3) The piston (7) has a suction part (6) attached to the seat (3).
3. The device according to claim 2, wherein a biasing force is provided by a restraining spring (5) which a) is brought into abutment. 4) The movable adsorption part (6) is driven by a membrane (39, 45) arranged at a connection part (12) with a valve pump (13). The device according to paragraph 3 or paragraph 3. 5) The device according to claim 4, wherein the movable suction part (6) is directly fixed to the membrane (45). 6) The valveless pump (13) is a membrane pump (14 to 18).
) The device according to any one of claims 1 to 5, configured as: 7) The device according to claim 6, wherein an electromagnetically driven membrane pump (46, 52, 53) is arranged on the guide (43, 44, 45) of the movable suction part (6). 8) Attach an elastic plate (6a) to the end of the suction part (6) facing the lamination side.
) is formed. 9) Claims 1 to 8 in which a plurality of suction portions (6, 6', 6'') are provided adjacent to each other in the transport direction or in front and back of each other to suction sheets of different sizes. The apparatus according to any one of the preceding items.]0) The conveyance direction (F'') of at least one suction part (6, 6', 6'') is at a predetermined angle (F'') with respect to the predetermined conveyance direction (F). γ), so that in addition to the movement component in the transport direction, there is also a movement component (
y') is generated. 11) The movable suction part (6) is moved by the exhaust part (14) of the suction part.
13) can be adjusted by a valve (19) connected to the valve (19).
Equipment described in Section. 12) Moving device (31~) that moves the movable suction part (30)
36). The device according to any one of claims 1 to 11. 3) The device according to claim 12, wherein the moving devices (31-36) are driven by an electromagnet (36). 14) The device according to any one of claims 1 to 13, characterized in that it is provided with a height-adjustable adjustment platform (2, 4). 15) The stacking table (2) is inclined with respect to the sheet transport direction (Ii'), and a stopper surface (2a
).) The device according to any one of claims 1 to 14. 16) Notebook stacking table tilted in the sheet transport direction (F) (
28), and a stopper surface (28) is provided at the front part of the stacking table.
The apparatus described in any one of the preceding paragraphs.