JPH04504094A - Siphoning device for flat sheets with separation by turbulent air - 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] Technical field of suction equipment for flat sheets with separation due to turbulent air The present invention relates to a machine that moves flat sheets one by one fed from a stack of sheets, e.g. a flat sheet, e.g. a paper sheet This invention relates to a device for automatically and regularly sucking up water.

prior art There are various types of sheet suction devices that can feed sheets at a predetermined speed. There is. In the suction device, the sheets contact the suction machine, and they It is moved as a result of mechanical displacement.

The rubber of the suction machine has dried out, causing more or less frequent displacements.

Furthermore, these devices require precise adjustment of suction.

Anomalies (e.g. overlapping sheets) only occur when a certain amount of movement is done This often results in paper jams, paper waste, and operator intervention.

Friction devices employ constant pressure maintained on the sheet by pads or rollers. ing. Adjusting this pressure is difficult and this makes the system somewhat limited. For example, very thin sheets such as delicate paper can be processed. Processing is not possible.

Suction and friction devices depend on the sheet's physical length, weight, overall dimensions, and its wetness. The characteristics of sheets taken out from a pile of sheets, such as their adhesion to each other and static electricity. Be insensitive to changes in the parameters being characterized (these parameters are It can vary randomly within the same mountain in the market. Especially regarding paper sheets, Paper consumption is limited to copy paper, such as non-carbon paper (seI f-copy i ng It is noteworthy that there is a steady increasing trend in the use of paper.

Currently known friction machines do not satisfy the working conditions in this area, and suction machines satisfies them only with difficulty.

Devices for sucking up sheets by suction through movable gratings are also known; has a simple and compact structure and is suitable for systems of different thicknesses, types and dimensions. The paper can be operated reliably and at high speeds, resulting in less paper waste and significantly reduces human intervention.

To ensure a regular and fast flow of sheets, it is necessary to load the sheets in a reliable manner. It is essential to take them out one by one and send them. Here, two or more Sheets stick to each other or the top sheet of the pile of sheets cannot be removed properly. things can happen.

A pile of sheets, e.g. paper, may be Limited by various parameters such as mutual adhesion due to freshness of the Let's go. These parameters vary randomly even in the same pile of the same type of paper. can be obtained. This refers to assembling machines. This causes various problems with the separation of sheets in the Requires pre-treatment before use.

Summary of the invention The present invention provides a solution to this problem and provides a solution to this problem by providing a − Concerning the equipment for effectively separating the sort from the pile of the sort, even when the top sheet is not successfully removed from the sheet pile. This ensures that each sheet is fed one by one.

Features of the invention are made clear in the accompanying drawings.

Drawing description The invention is illustrated below by means of the accompanying drawings. Of these drawings, FIG. 1 is a partially cutaway elevational view of a typical embodiment of the invention.

FIG. 2 is a partially cutaway sectional view taken along the line ■-■ in FIG. 1.

FIG. 3 is a sectional view taken along the line l1llr-[ of FIG. 2.

FIG. 4 is a sectional view taken along the line TV-IV in FIG. 2.

FIG. 5 is a professional diagram of the control system of the peeling device according to the present invention.

6 and 7 show two operating states of the stripping device according to the invention.

DESCRIPTION OF TYPICAL EMBODIMENTS Referring to FIG. 1, the supply space of a typical assembly machine is shown. supply table A sheet suction device 2 is provided on the table 1.

The illustrated sheet suction device is characterized in particular by a drive mechanism with gears and rollers 5. The stand of the above assembly is arranged so that it can be displaced in parallel motion as a whole under the action of the structure. It is provided with a perforated grid section (grid) 4, which is provided on the ground. Illustrated fruit In the embodiment, the lattice part 4 is itself closed, and it 1 in the direction of the discharge area 3. The above lattice part Suction means 9 consisting of, for example, a fan 7 is provided above 6.

It is provided above the discharge area 3 and spans the entire width of the siphoning device in the lateral direction. Preferably, the diverting means 9 extending from the top of the discharge area close the top of the discharge area.

A pile of flat sheets is placed on the supply table 1 and the suction fan 7 is activated. When the latter is opened, the latter creates a draft of air in the free space 8 and the open sides of the device. This creates an air flow that is drawn into the space through the air. this horizontal sky Under the action of airflow, the upper sheet of the mountain is put into a vibrating state, and the uppermost sheet is bent. contact with the part 6 of the grid part, and the particles adhering to it by suction through the grid part. The state is maintained. And this seat is along this and guided towards the discharge area 3, while the following sheets are lattice It is sucked up towards the part. In this way, the sheets are sucked up one by one. , are carried continuously towards the discharge area.

The mutual distance between the lower surface 6 of the grid section and the top of the pile of sheets on the supply table is The height of the pile of the sheet decreases while remaining constant. This supply table 1, for example, in order to keep the mountain at a constant distance from the portion 6 of the grid section, It is installed on a mechanism that allows vertical displacement in proportion to the decrease in the height of the Ru. Conversely, the sheet suction device itself is placed on the supply table 1 which will be in a stationary state. It can be provided so as to be displaced relative to.

The sheet suction device described above does not have a suction device, roller, or pad. Simplicity and compactness make it particularly suitable for integrated machines of modular construction. can be manufactured as accurate and reliable mechanical elements or modules. do.

Control of all components is controlled by a processor that may be integrated into the machine. Within the program system for the overall automatic control of the above equipment under the direction of the output elements. It is possible to be integrated. The sensing element controls the operation of the sheet wicking device It is provided for.

In particular: - the detection element serves to detect the presence or absence of a sheet on the supply table 1; ing. The format of the sheets stacked on supply table 1 can be detected. A plurality of detection elements are installed so that a desired number of fans 7 can be commanded to be driven. They may be arranged at regular intervals, one sensing element detecting the passage of sheets through the discharge area 3. It plays the role of monitoring the road.

To ensure a uniform and rapid flow of sheets, the sheets must be removed from the supply table. It is essential that the documents be sent one by one. This can be achieved according to the invention, namely This may occur in situations where abnormal operation occurs, for example when multiple sheets are stuck together. This is achieved by arranging the stripping device so that it is effective.

A typical embodiment of a stripping device according to the invention is shown in the accompanying drawings. This peeling The device is designated generally by 10. For example, below the discharge area 3. Air flow generation consisting of a turbine 15 extending along the bottom wall 18 of the supply table 1 of As can be seen from the figure, the turbine 15 is located at the top of the pile 100 of sheets. at least one air turbulence-inducing roller on the approximate leading edge of the sheet; It works together with the circulation means. In the illustrated embodiment, the bottom wall 18 of the chamber includes a plurality of orifices. 2, which are shown in FIG. These orifices The stand 19 pivots around a rotating shaft 22 whose end is connected to the stand of the machine. Normally closed by a shutter formed by a flap 21 mounted on the I'm being teased.

As is clear from FIG. 3, this tilting of the flap 21 causes one end of the flap 21 to This is done by a link 27 mounted and driven by an electromagnet 16.

In the illustrated embodiment, two top flaps 23.25 are also shown, of which The functions will be described later. This top flap is coupled to the stand of the machine above. It is rotatably provided around rotational axes 24 and 28. This flap 23 ．． 25 is attached to one end of this flap as shown in FIG. Driven by links 28, 29 driven by stones 17.

The stripping device 10 has a control processor which can be the overall control processor of the machine. controlled by To control this stripping device, this processor in order to permanently monitor the presence of the sheet in the free space 8 near the part 6 of the Cutting sheets, presence of multiple sheets stuck to each other, wrinkled or bent sheets. Any operation on the grid, such as warped sheets, sheets of different thickness, or sheets with prints, etc. It interacts with a detection device arranged to also detect anomalies.

More specifically, this detection device is located in front of the grid section of the sheet suction device 2. Thickness tester installed and positioned to permanently check the thickness of the material located It is an output device. In the exemplary embodiment shown, the thickness sensing device is powered by a light source 12. It consists of a photoelectric cell 11 that responds to the light beam generated by the photovoltaic device. This detection cell 11 generates an electrical signal that is a function of the thickness of the material that always interrupts the light beam at the same location. produce.

The control system of the peeling device according to the present invention is represented by the block diagram in FIG. There is. The microprocessor control unit 14 controls the detection device 11 the detected signal and the settings retrieved from the reference memory 13. Compare with point (a set po-int) R. This set point R is set on the calibration sheet ( the value of the detection signal corresponding to the presence of represents the range of The limit value of the predetermined range of reference values is determined by, for example, R1 and R2. It will be specified. The control unit 14 generates a detection signal regarding the reference values R1 and R2. control for any one of the electromagnets 16 and 17 which controls the deflection means by the value of The microprocessor is configured to generate a control signal.

When a suitable sheet is present in the sensing fluid of the sensing cell 11, the sensing signal is equal to the reference signal. Between R1 and R2, the microprocessor does not command any corrections. and , the flaps 21, 23 and 25 are kept closed as shown in FIG. Turbine 15 is stopped. and a sheet conveyed along section 6 of the lattice section. is carried towards discharge area 3. The phase identified as corresponding to the reference value The corresponding sheet is then located downstream of a pressure member consisting of rollers 31, 32. The roller 31 rotates continuously, and the roller 32 moves to the detection cell. An electromagnet (Fig. (not shown).

If there is no sheet in the detection hot water of cell 11 within the allowed time, detection cell 1 1 produces a signal with a higher value than the reference signal R1, and the microprocessor 14 The first control signal CDI is generated to lower the lower flap 21 as shown in FIG. an electromagnet 16 that drives the flap 21 in order to move it towards the open position and gradually bring it into the open state; is energized, while the turbine 15 is put into operation. Figure 6 shows the flap The drive mechanism of 21 is not shown. The air flow created by the turbine 15 is guided by the flow path A towards the orifice 19, resulting in a pile of sheets 100 led to the anterior edge of the The sheet is then lifted into a fan shape and the top sheet 101 is sucked up towards the grid section 6, while the other sheets on top of the pile of sheets 100 due to the air that has entered between the sheet and the following sheet. Back again. In the device, the detection cell 11 detects the presence of the sheet 101 in the detection water. When you issue it, it immediately returns to hibernation. If it satisfies the necessary conditions, this system The waste is then conveyed towards discharge area 3.

Multiple sheets stick together and suck towards the grate within the allowed time. When raised, the detection signal produced by the detection cell 11 is the reference signal R1. Lower than, and microprocess.

14 is a second control for energizing the electromagnet 17 which drives the upper flap 23.25. A control signal CD2 is generated and brought into the state shown in FIG. This diagram In order to avoid too much complexity, the drive mechanism of the flaps 23.25 is here It is not shown. The airflow created by the turbine 15 is is directed towards the evacuation area 3 via path B, which brings it into the detection cell 11. directed towards the front edge of the sheet located within the detection field. This sheet is vibrating and the air flow B is sucked up by the upper sheet 101 toward the grid section 6. 100 sheets, while other sheets are returned to the top of the pile 100 of sheets. . Immediately after the device detects one sheet 101 in the detection cell 11 or the detection section, Returns to feeding state, and if it meets the required conditions, then this sheet is ejected. It will be carried to Exit Area 3 at the same time.

As a result of the complementary action of the turbulent air, the peeling device according to the invention can remove the sheets one by one. I guarantee it will be released. If there is any abnormality in taking out the sheet, is identified in the system without being displaced from the original pile. The sheet is Only when the necessary conditions are met are they sent to the discharge area 3, which allows the paper to Debris and operator intervention are significantly reduced. In addition, this system automatically adjusts its speed (ratte) as a function of the quality of the image. That's good Under favorable conditions it is possible to achieve high speeds at the exit of the chamber.

Finally, it is possible to print sheets that are not identical, sheets of different thickness, and full of wrinkles. , or allows detection of folded sheets. Paper sheets cannot be processed. The range of paper used is very wide, for example from 10 grams to 300 grams, and so on. In some cases, it will be more.

The peeling device according to the present invention can be combined with any sheet suction device. For example, a current suction type (a current suction type) pe) Can be combined with a sheet suction device. However, the peeling according to the present invention The combination of the separating device and the suction type sheet suction device is as described above and In terms of optimum results in terms of efficiency and flow rate resulting therefrom, as shown by the accompanying drawings. This is particularly advantageous. This device according to the invention has a feed rate of 130 per minute in one supply space. It is possible to provide a flow rate of sheets on the order of 100 sheets.

An advantage of the device according to the invention is that it provides an assembly consisting of a plurality of sheet supply spaces. is particularly attractive. In particular, the tightly controlled uniform flow of sheets in each compartment As a result of the synchronization of the control of the pressure members 31, 32, the completeness of the seat in the assembly system This makes it possible to guarantee good overlap. Multiple supply spaces or stacked vertical assembly With respect to the cylinder 3, the control pulse sequentially drives the pressure member in each chamber to 4. Continuously advance toward the transport heald 33 circulating on 35 and 36. The sea urchin is turning. - the sheets fed by the feeding space are preferably heddled 33; It is preferable that the cylinders 3B and 39 be pressed between the belt 37 and the belt 37 that rotates over the cylinders 3B and 39. belt 37 may extend beyond the total height of the assembly. by any one supply space. The sheet fed by is superimposed on the sheet fed by the upper supply space, The set of superimposed notes pressed between belt 33 and belt 37 is , is conveyed towards the evacuation zone of the assembly.

As mentioned above, the detection member and other more conventional monitoring members are integral to the instrumentation as a whole. Preferably, it is controlled by a process forming a management unit. that prog Ramming can include, but is not limited to, starting and stopping a fan motor in sequence. Control the stop and speed, control and adjust the effect of the peeling device, and control the parallel movement of the grating section. and as a function of the sensing information permanently supplied by the sensing element described above. , an association to maintain the relative spacing between the bottom surface of the lattice section and the top of the pile of sorting. Give each other control. This programmed device is a continuous sheet wicking device. control the physical activity of each sheet taken from the top of the pile of sheets, and in particular the before transport towards the discharge area. Detects any abnormalities immediately, automatically stops the equipment, and records any abnormalities. to be corrected and then restart the machine.

This improves the reliability and efficiency of the automatic control to an optimal range.

The exemplary embodiments of the invention described above are examples given for illustrative purposes only, and the invention is not limited to this example. Any modifications, variations, and It is contemplated that any equivalent device would fall within the scope of this invention.

FIG.5 Submission of translation of written amendment Article 184-8 of the Patent Act) September 17, 1991

Claims (13)

[Claims] 1. Suction of flat sheets from a pile of sheets placed on the supply table (1) an air flow generator and an air flow generator for arranged to direct the turbulent air created on at least one side of the pile of sheets. Stripping device (10) characterized by guided guide means (A, B). 2. Said air flow guiding means is arranged such that the pile (10) of sheets placed on the supply table (1) 0) on one side of the upper part of the airflow produced by the airflow generator (15). 2. The device according to claim 1, further comprising a first channel (A) arranged to guide the flow. 3. The first flow path (A) connects between the first state (Fig. 1) and the second state (Fig. 6). A first shutter (21) arranged to move and a control device (14) The first shutter (21) is operated in response to the issued first control signal (CD1). and a drive device (16) for driving the first shutter in the first state. The shutter closes the first air flow path (A), and in the second state, the first shutter closes the first air flow path (A). The air flow path is opened, and the control device moves the sheet from the pile (100) of the sheets. 3. Generating the first control signal (CD1) when the first control signal (CD1) is not extracted. equipment. 4. The control device (14) is mounted on the supply table (1) for thickness detection. According to claim 3, the detection signal (D) is responsive to a detection signal (D) produced by a device (11). The device described. 5. The control device (14) detects whether a sheet is present in the detection field of the detector (11). In order to generate the control signal (CD1) when the detection signal (D) and the sheet 5. The device according to claim 4, wherein the device is for comparing a reference signal (R) for the thickness of the material. . 6. The guide means is located in a free space ( 8) arranged to direct the air flow created by said generator (15) into the upper part of said generator (15); 6. A device according to any one of claims 1 to 5, comprising a second flow path (B) located at the second flow path (B). 7. Said second flow path (B) discharges the air flow into the discharge area (3) of said machine. 7. A device according to claim 6, arranged as follows. 8. The second flow path moves between the first state (Fig. 1) and the second state (Fig. 7). The second shutter (25) arranged in for operating the second shutter (25) in response to the second control signal (CD2) a driving device (17), and in the first state, the second shutter is in the second state. 2 flow path (B) is closed, and in the second state, the second shutter closes the air flow. and the control device causes the material removed from the sheet suction device to producing the second control signal (CD2) when the thickness is greater than a predetermined value; The device according to claim 6 or 7. 9. The control device includes a thickness detector (11) mounted on the supply table (1). ) in response to a detection signal (D) produced by Place. 10. The control device (14) detects when a sheet is present in the detection field of the detector (11). When the thickness of the material to be used is greater than the thickness corresponding to the reference signal (R), the control signal ( CD1) corresponding to the above detection signal (D) and a predetermined thickness of the material. 10. The device according to claim 9, wherein the device is for comparing with a reference signal (R). 11. The sheet suction device includes a movable grid section (4) and a suction means (7). , the lattice part (4) is located above the supply table (1) in the direction of the discharge area (3). The suction means (7) is mounted on a stand so as to be displaceable over a certain length (6). ), the suction created by the suction means (7) causes the pile of sheets (100 ) displaced towards the evacuation area (3) so as to cause airflow to the sides of the is mounted on the portion (6) of said lattice section which is to be The sheet (101) is brought into a vibrating state, and the sheet (101) is moved toward the discharge area (3). oriented toward said lattice part (6) so as to be displaced together with said lattice part (6); 11. A device according to any one of claims 1 to 10, wherein the device is siphoned once. 12. 12. The device of claim 11, wherein the lattice is itself closed. 13. The suction means (7) is distributed over the lateral width of the lattice portion (4). 13. The fan according to claim 11 or 12, comprising one or more fans arranged equipment.