JP4002947B1 - Sample sheet separating and supplying apparatus and sample sheet separating and supplying method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To support the conveyance of various types of sample sheets with different physical properties such as thickness and friction coefficient, and to contribute to the improvement of work efficiency and cost reduction for the test, inspection and processing of the sample sheets . A sample sheet separation and supply device and a method for separating and supplying a sample sheet are provided.
[Solution]
The control means 17 detects the sample sheet S sandwiched between the lower roller 5 and the upper roller 6 and conveyed in the forward direction by rotating the paper feed roller 3, the lower roller 5 and the upper roller 6 in the forward direction. Triggered by the input of the detection signal of the first sensor 15, the rotation of the lower roller 5 in the forward direction is stopped, and then the sheet feeding is triggered by the input of the detection signal of the second sensor 16 that detects the sample sheet S. the rotation in the positive direction of the roller 3 and the upper roller 6 is stopped, and, together with separating the said feed roller 3 from the sheet cassette 2 to rotate the lower roller 5 in the reverse direction, the current detector 18 is below By detecting the stable state of the current value of the motor that drives the side roller 5 within a predetermined time, it is determined that one sample sheet S is separated, and the rotation of the lower roller 5 in the reverse direction is stopped. In addition, one sample sheet S separated between the lower pinch roller 8 and the upper pinch roller 9 is sandwiched, and the lower pinch roller 8 and the upper pinch roller 9 are rotated in the forward direction to produce one sample. The drive of each motor 3M, 5M, 6M is controlled so that only the sheet S is conveyed .
[Selection] Figure 4

Description

The present invention is a sample sheet separation and supply device for automatically supplying a sheet (sheet-like) article in various industries such as pulp, fiber, film, etc. The present invention relates to a sample sheet separating apparatus capable of separating and feeding one sheet at a time, even when multiple types of sample sheets having different physical properties such as sheath and friction coefficient are set in a superimposed manner.

  In recent years, in various industries such as paper pulp, fiber, and film, inspection and testing of products have become more and more important in order to prevent the shipment of defective sheets and stabilize the quality. A wide variety of testing and inspection equipment suitable for each industry and product has been developed and put to practical use.

  For example, in paper pulp, there are a number of testing machines such as a paper thickness testing machine, surface smoothness testing machine, ultrasonic testing machine, Parker print surf testing machine, etc. For example, various testing machines that have been systematized and miniaturized for testing. A paper lab (Valmet Automation, product name), Auto Line (Lorentzen Wattre, product name), etc. that can be used as a single unit to perform multiple types of tests. There is.

Conventionally, when supplying a sheet (hereinafter referred to as a sample sheet) as a sample to such a test system or apparatus, an operator manually supplies the sample sheet one by one, or a sheet feeding device. Is used (see Patent Document 1).

As a method of using the sheet feeding device, for example, a roller in which a plurality of pre-cut sample sheets are stored in a superimposed manner on a cassette of a feeding device, and a material having a large frictional force such as rubber is arranged on the surface. In contact with the sample sheet located at the uppermost or lowermost part, and using the frictional force, the sample sheet is sequentially separated from other sample sheets and fed out one by one from the top or bottom. Yes (see Patent Document 2 for this paper feeder).

JP 2000-62984 A JP 2004-075395 A

However, the method in which the operator manually supplies the sample sheets one by one requires the operator to work on the testing machine, which causes problems such as increased labor costs and reduced work efficiency. there were.

In addition, a method of automatically storing a plurality of sample sheets superimposed on a cassette of a supply device, and automatically feeding the sample sheets in a conventional paper supply device is the size and type of the sample sheets stored in the same cassette. Since it is assumed that they are the same, when testing a variety of single wafers with different physical properties such as thickness and coefficient of friction, a sample sheet for each type of single wafer is used. Had to be stored in a different cassette.

In other words, if multiple types of sample sheets with different physical properties are mixed and stored in the same cassette, the thickness, hardness, surface roughness, coefficient of friction, etc. of the sample sheets are different, so they are separated one by one. Thus, it becomes difficult to feed, and a so-called double feed problem occurs in which a plurality of sample sheets are simultaneously fed.

Furthermore, in the method for feeding the uppermost utilizing frictional force or least significant sample sheet as described above forward, sequentially, but is intended to be sent to the next step, for example, for each type of sample sheet even when housed in a different cassette, is greater than the frictional force and acting between the superimposed sample towards the frictional force acting between the sheet the elastic body and the sample sheet surface in contact with the sample sheet Again, double feed was caused by deterioration of materials constituting rollers and the like, adhesion of paper dust, and the like.

Therefore, the present invention, when the sample sheet is double-fed between a pair of rollers arranged upstream in the paper conveyance path, conveys only the uppermost sample sheet in the forward direction and positions it below the lower layer. By transporting all the sample sheets in the opposite direction, the sample sheets can be separated and fed one by one, especially for conveying various types of sample sheets with different physical properties such as thickness and friction coefficient. which also supports the testing sample sheet, inspection, and to provide a sample sheet separator feeder and sample sheet separation method of supply which can help reduce the increase and cost of the work efficiency of machining such as It is.

In order to achieve the above-described object, the sample sheet separation and supply apparatus of the present invention is a sample sheet separation and supply apparatus that separates and feeds multiple types of sample sheets having different physical properties one by one , and superimposes a plurality of sample sheets. A sheet feeding roller which is disposed so as to be press-contactable with the sample sheet above the sheet feeding cassette which can be stored, and is rotatably supported by a motor in a forward direction in the conveyance direction of the sample sheet; A lower roller disposed below the upstream conveying path and supported by a motor so as to be rotatable in both forward and reverse directions in the conveying direction of the sample sheet, and the lower roller via the conveying path Oppositely arranged, can be moved toward and away from the lower roller side, and driven in the forward direction in the sample sheet conveyance direction by driving the motor A transport roller comprising an upper roller supported in a rollable manner; a first sensor disposed immediately downstream of the transport roller in the transport path; and capable of detecting a transported sample sheet; and the first sensor in the transport path. A second sensor arranged immediately downstream of one sensor and capable of detecting the conveyed sample sheet, detects a current value flowing in a motor for rotating the lower roller, and detects 1 between the upper roller and the lower roller. A current detector capable of detecting that only one sample sheet is sandwiched, disposed between the first sensor and the second sensor in the transport path, and driven by a motor to transport the sample sheet A lower pinch roller that is rotatably supported in the forward direction, and is disposed opposite to the lower pinch roller via a conveying path, and the lower pinch roller Is capable separable into a pair of pinch rollers comprising a rotatably supported upper pinch roller by the rotation of the lower pinch roller, and the feed roller, the upper roller, lower roller and a lower A control means for controlling the driving of each motor for rotating the pinch roller is provided, and the maximum contact frictional force generated between a plurality of the superimposed sample sheets is A, the upper sheet and the sample sheet in contact with the upper sheet The contact friction force A is defined as B, and the minimum contact friction force generated between the lower roller and the sample sheet in contact therewith is C. , B, and C are adjusted so that the relationship of B>C> A is maintained, and the control unit rotates the paper feed roller, the lower roller, and the upper roller in the forward direction, Roller and upper side Triggered by the input of the detection signal of the first sensor that detects the sample sheet sandwiched between the rollers and conveyed in the forward direction, the rotation of the lower roller in the forward direction is stopped, and then the sample sheet is removed. In response to the input of the detected detection signal of the second sensor, the rotation of the paper feed roller and the upper roller in the forward direction is stopped, the paper feed roller is separated from the paper feed cassette, and the lower The side roller is rotated in the reverse direction, and the current detector detects the stable state of the current value of the motor that drives the lower roller within a predetermined time. The rotation of the side roller in the reverse direction is stopped, and only one sample sheet is sandwiched between the lower pinch roller and the upper pinch roller, so that the lower pinch roller La and the upper pinch roller is rotated in the forward direction, the to carry one sample sheet only, and controls the driving of each motor.

Such sample sheet separator feeder according to the present invention constructed as above, is sent from the paper cassette by the rotation of the feed roller in contact with, the sample sheet is conveyed while being held between the said lower rollers and the upper rollers The first sensor detects. Then, when the detection signal is input to the control means, the driving of the motor of the lower roller is stopped, and the rotation of the lower roller in the forward direction is stopped.

When the sample sheet to be conveyed is double-fed, the upper roller is still rotating in the forward direction, and the minimum contact frictional force B generated between the upper roller and the sample sheet that contacts the upper roller. Is larger than the maximum contact frictional force A generated between a plurality of sample sheets , and the uppermost sample sheet in contact with the upper roller is further conveyed downstream in the conveyance path. Further, since the minimum contact frictional force C generated between the lower roller and the sample sheet in contact with the lower roller is larger than the maximum contact frictional force A generated between the plurality of sample sheets , The lowest sample sheet in contact stops in place. When another sample sheet exists between the uppermost sample sheet and the lowermost sample sheet , the other sample sheet is moved to the uppermost sample sheet by the frictional force generated between the uppermost sample sheet and the lowermost sample sheet. Between the sample sheet and the lowest sample sheet .

When the uppermost sample sheet conveyed downstream is detected by the second sensor, the upper roller stops rotating in the forward direction and the lower roller rotates in the reverse direction. , in a state where the upper roller and in contact with which the uppermost sample sheet was stopped in place, in order from the lowest sample sheet in contact with the lower roller to the upper sample sheet, conveyed in the reverse direction.

At this time, the sample sheet contact frictional force C between the lower rollers and the sample sheet in contact with it, is greater than the maximum contact friction force A generated between the plurality of sample sheet, in contact with the lower roller Is peeled off from other sample sheets located at the upper layer. Since the upper roller and the contact frictional force between the sample sheet B is also greater than the maximum contact frictional force A generated between the plurality of sample sheet in contact therewith, the sample sheet in contact with the upper roller is positioned at the lower Without being dragged by another sample sheet, it stays in that position while being gripped by the upper roller.

In this way, by separating the uppermost one sample sheet from the other, only one sample sheet is transported to the supply position even when various types of sample sheets are superimposed on the paper feed cassette. Is possible.

Further, when the number of sample sheets sent from the sheet cassette is one, the upper roller continues to rotate in the forward direction and is further conveyed downstream in the conveyance path. Then, when this sample sheet said second sensor detects the once, to stop the rotation in the positive direction of the upper roller, but rotates the lower roller in the opposite direction, the sample sheet is the upper roller Since the frictional force in contact with the roller is superior to the coefficient of friction generated between the roller and the lower roller, the frictional force stops in place.

As described above, even when a variety of sample sheets are superimposed on the sheet feeding cassette, it is possible to always transport only one sample sheet to the supply position. The fact that only one sample sheet has been separated means that the current detector observes the change in the current value flowing through the motor that rotates the lower roller, and the current value has hardly changed in a predetermined time and is stable. It can be determined by detecting that . Therefore, based on the observation result of the light bulb detector, the rotation of the lower roller in the reverse direction is stopped, and only one sample sheet is sandwiched between the lower pinch roller and the upper pinch roller, thereby lowering the lower roller. By rotating the side pinch roller and the upper pinch roller in the forward direction, only the one sample sheet can be separately supplied.

Furthermore, sample sheet separation feeder according to the present invention, between the lower rollers and the upper rollers, have a gap adjusting means for forming a gap of a predetermined dimension which constitutes the conveying path, before Symbol upper The roller is disposed between the tip portions of a pair of roller support members that are swingable, and the gap adjusting means is located on the lower side from the base formed on the roller support member outside the transport path. An adjustment member formed so as to be able to adjust the protrusion amount protruding toward the roller, and the upper roller and the lower roller disposed in the vicinity of the lower roller and contacting the lower end portion of the adjustment member; And an adjusting member cradle that forms a gap of a predetermined dimension that constitutes the conveying path.

The sample sheet separation and supply apparatus of the present invention configured as described above is supported between the tip portions of the pair of roller support members by adjusting the protruding amount of the adjustment member that contacts the adjustment member cradle. The size of the gap formed between the upper roller and the lower roller can be adjusted. Thus, by adjusting the size of the gap formed between the upper roller and the lower roller supported between the tip portions of the pair of roller support members, various types of the upper roller and the lower roller can be adjusted. Appropriate surface pressure and contact friction force can be obtained corresponding to the roller shape.

In addition, the sample sheet separation and supply method of the present invention is a sample sheet separation and supply method that separates and feeds multiple types of sample sheets of different physical properties one by one, and allows multiple sample sheets to be stacked and stored The paper feed roller is disposed above the paper feed cassette so as to be able to press contact with the sample sheet, and is supported by the motor so as to be rotatable in the forward direction in the direction of transport of the sample sheet. A lower roller disposed below the path and supported by a motor so as to be rotatable in both forward and reverse directions in the conveying direction of the sample sheet, and opposed to the lower roller via the conveying path, The lower roller side can be contacted / separated and is supported by a motor so as to be rotatable in the forward direction in the sample sheet conveying direction. A transport roller comprising an upper roller, a first sensor disposed immediately downstream of the transport roller in the transport path, and capable of detecting a transported sample sheet; directly downstream of the first sensor in the transport path A second sensor arranged and capable of detecting a sample sheet being conveyed, detects a current value flowing in a motor that rotates a lower roller, and only one sample sheet is interposed between the upper roller and the lower roller. A current detector for observing that is detected to be sandwiched, disposed between the first sensor and the second sensor in the transport path, and driven in the forward direction in the transport direction of the sample sheet by driving the motor. A lower pinch roller that is rotatably supported is disposed opposite to the lower pinch roller via a conveyance path, and can be brought into contact with and separated from the lower pinch roller. A pair of pinch rollers that are rotatably supported by the rotation of the lower pinch roller, and rotate the paper feed roller, upper roller, lower roller, and lower pinch roller A control means for controlling the drive of each motor to cause the maximum contact frictional force generated between the plurality of superimposed sample sheets to be A, between the upper roller and the sample sheet in contact therewith When the minimum contact friction force generated is B, and the minimum contact friction force generated between the lower roller and the sample sheet in contact therewith is C, the contact friction forces A, B, C Is adjusted so that the relationship of B> C> A is maintained, and the feeding roller, the lower roller, and the upper roller are rotated in the forward direction under the control of the control unit, and the lower roller and Upper side Triggered by the input of the detection signal of the first sensor that detects the sample sheet sandwiched between the rollers and conveyed in the forward direction, the rotation of the lower roller in the forward direction is stopped, and then the sample sheet is removed. In response to the input of the detected detection signal of the second sensor, the rotation of the paper feed roller and the upper roller in the forward direction is stopped, the paper feed roller is separated from the paper feed cassette, and the lower The side roller is rotated in the reverse direction, and the current detector detects the stable state of the current value of the motor that drives the lower roller within a predetermined time. The rotation of the side roller in the reverse direction is stopped, and one sample sheet is sandwiched between the lower pinch roller and the upper pinch roller, and the lower pinch roller And by rotating the upper pinch roller to the forward direction, characterized by transporting only the single sample sheet.

According to such a sample sheet separation and supply method of the present invention, even when various types of sample sheets are superimposed on the paper feed cassette, it is possible to always transport only one sample sheet to the supply position. Become.

According to the sample sheet separating and supplying apparatus and the sample sheet separating and supplying method of the present invention, it is possible to separate and supply sample sheets , and in particular, various types of sample sheets having different physical properties such as thickness and friction coefficient are cassettes. In the case where the sample sheet is stored in a superposed manner, it is possible to contribute to the improvement of the work efficiency and the cost reduction for the test, inspection, processing and the like of the sample sheet .

First, as an embodiment of the sample sheet separation and supply apparatus and the sample sheet separation and supply method of the present invention, samples of various types of sample sheets stored in a superimposed manner on a paper feed cassette are separated one by one and used as a supply position. A case where the sample sheet is conveyed to the test apparatus will be described with reference to FIGS.

FIG. 1 is a perspective view showing a main part of the sample sheet separating and supplying apparatus of the present embodiment, and FIG. 2 is a transparent front view. FIG. 3 is a circuit diagram showing electrical connection between the control means and other drive systems. FIG. 4 is a control state of the sheet feeding roller, the upper roller, the lower roller, and the pinch roller according to the states of the first sensor, the second sensor, and the current detector (1ST to 5ST) by the control unit of the present embodiment. FIG. 5 to FIG. 10 are schematic diagrams for explaining a control sample conveyance state and driving states of the paper feed roller, upper roller, lower roller and pinch roller in this embodiment.

Sample sheet separating feeding device 1 of this embodiment is provided with a tray-shaped paper feed cassette 2 for accommodating by superimposing a sheet of various kinds as a sample sheet S one by plural (see FIGS. 5 to 10 ). The sheet feeding cassette 2 includes a pressing plate 2a for stacking the sample sheets S stored in the sheet feeding cassette 2, and a spring (not shown) as a pressing member for applying a pressing force to the pressing plate 2a. Yes. Or you may comprise the press plate 2a so that raising / lowering is possible by the drive of a motor not shown.

Above the paper feed cassette 2, a paper feed roller 3 is supported so as to be rotatable in the forward direction in the transport direction of the sample sheet S by driving a paper feed motor 3M. The paper feed roller 3 is composed of a roller shaft 3a and two roller bodies 3b that are spaced apart from the roller shaft 3a. By driving a paper feed roller contact / separation motor 4, a feed port is provided in the transport path. A sample sheet stacked on the pressing plate 2a when the paper feed roller 3 is close to the paper feed cassette 2. S is pressed against the roller body 3b with an appropriate pressure, and the paper feed roller 3 is separated from the paper feed cassette 2, so that the pressure contact between the sample sheet S and the roller body 3b is released. Yes. In addition, a pressure sensor is disposed on the roller body 3b, and the pressure plate 2a is lifted and brought into contact with the roller body 3b arranged in advance while confirming the pressure contact with the pressure sensor. You may comprise as follows.

A pair of transport rollers 7 including a lower roller 5 and an upper roller 6 are disposed in the uppermost stream in the transport path of the sample sheet S connecting the paper feed cassette 2 and the test apparatus.

The lower roller 5 includes a roller shaft 5a and two roller main bodies 5a spaced apart from the roller shaft. The lower roller 5 is disposed below the transport path and is connected to the lower motor 5M connected thereto. The sample sheet S is supported so as to be rotatable in both forward and reverse directions in the conveying direction of the sample sheet S by a reverse driving force. In the present embodiment, the lower motor 5M is provided with a current detector 18 for detecting a current change during rotation in the reverse direction by a control means described later.

The upper roller 6 is composed of a roller shaft 6a and two roller bodies 6b that are spaced apart from the roller shaft 6a. Each roller body 8b is a roller body 5a that is disposed on the lower roller 5. while being opposed via the transfer path, which is separable freely arranged with respect to the lower roller 5 side by the driving force of the connected upper motor 6M, positive in the transport direction of the sample sheet S It is supported so that it can rotate in the direction.

Specifically, the lower roller 5 is rotatably supported between a pair of lower roller bearing portions 11 formed facing the inside of the housing of the sample sheet separating and supplying apparatus 1.

The upper roller 6 is rotatably supported between the distal ends of a pair of arms 12 as roller support members. The base ends of the pair of arms 12 are respectively formed with locking shafts 12a protruding outward, and the shafts formed on the pair of arm support portions 13 formed facing the inside of the housing. By fitting the locking shaft 12a into the hole 13a, the upper roller 6 and the arm 12 can swing, and are supported so as to be close to and away from the lower roller 7. Further, the upper roller 6 and the arm 12 can move up the upper roller 6 by driving the air cylinder 6S so that the gap with the lower roller 5 can be separated so as not to hinder the conveyance of the sample sheet S.

  Further, a plate-like base portion 14a that constitutes the gap adjusting means 14 is formed at the distal end portions of the arms 12 so that the amount of protrusion of the base portion 14a protruding toward the lower roller 5 can be adjusted. A screw hole 14c for screwing the screw-like adjustment member 14b formed in the above is disposed. Further, when the arm 12 is swung so that the upper roller 6 is brought close to the lower roller 5, the lower end portion of the adjusting member 14 c is abutted outside the conveyance path in the vicinity of the lower roller 5. A pedestal 14d as an indirect adjustment means 14 to be contacted is disposed, and the adjustment member 14b is screwed into the screw hole 14c of the base portion 14a to adjust the protruding amount of the tip portion from the base portion 14a. Therefore, a gap dimension that constitutes the transport path is defined between the upper roller 6 and the lower roller 5, more specifically, between the surface of the roller body 8b of the upper roller 6 and the surface of the roller body 5a of the lower roller 5. Adjustable.

Here, a plurality of sample sheets S of a variety of types are stored so as to overlap each other, and the maximum contact frictional force generated between the sample sheets S stacked above and below is A, and the upper roller 6 the minimal contact friction force generated between the respective sample sheet S B, the minimum contact friction force generated between the lower rollers 5 wherein each sample sheet S when the C and the By replacing the upper roller 6 and the lower roller 5 with ones having different structures or adjusting the gap dimension between the rollers, the relationship of the contact frictional forces A, B, and C is maintained as B>C> A. Yes.

For example, the upper roller 6 and the lower roller 5 are preferably metal rollers in order to correspond to any sample sheet S , but rubber rollers can also be used. Silicon rubber (Shore A70) or urethane rubber (Shore A50 / A70 / A90) is used as the rubber material. Various rollers such as those having smooth surfaces, small wrinkles (waves), and knurled surfaces can be used.

  And the relationship of the said contact frictional forces A, B, and C can be adjusted with the following method, for example.

  That is, if the upper roller 6 and the lower roller 5 are made of the same rubber material, the length of the roller is changed in order to produce a difference in contact friction force. Further, if the rubber material of the upper roller 6 and the lower roller 5 is different, for example, the upper roller 6 is set to Shore A50 and the lower roller is set to Shore A90. Use one that is softer than the rubber hardness. Alternatively, the diameter of the upper roller 6 is changed to be larger than the diameter of the lower roller 5 by changing the diameter, and the contact area is changed.

Further, when the upper roller 6 is a metal roller and the lower roller 5 is a rubber roller, the contact frictional force of the metal roller is large, so the material and hardness of the rubber roller may be selected according to the sample sheet S to be used. .

  The gap between the surface of the upper roller 6 and the surface of the lower roller 5 may be 60 μm to 80 μm, preferably 40 μm to 50 μm. This is because there is a problem of dimensional error and processing accuracy when supporting each roller.

For example, when a plurality of a sheets Sa, b sheets Sb, and c sheets Sc are prepared as sample sheets S and overlapped in the order of a sheets Sa, b sheets Sb, and c sheets Sc from the top, When the largest contact friction force is generated in relation to the a paper Sa and the smallest contact friction force is generated in relation to the c paper Sc, the maximum generated between the a paper Sa and the b paper Sb. The contact friction force A is 50, the minimum contact friction force B generated between the upper roller 6 and the c paper Sc is 80, and the minimum contact friction generated between the lower roller 5 and the c paper Sc. Adjust force C to be 60.

A transmissive sensor (first sensor) 15 capable of detecting the sample sheet S being conveyed is disposed immediately downstream of the pair of conveyance rollers 7 in the conveyance path. Similarly, a transmission type sensor (second sensor) 16 capable of detecting the conveyed sample sheet S is disposed immediately downstream of the sensor 15.

Furthermore, on the downstream side of the pair of transport rollers 7 in the transport path, a lower pinch roller 8 supported rotatably by the lower motor 8M in the forward direction in the transport direction of the sample sheet S ; The lower pinch roller 8 is disposed to face the lower pinch roller 8 through a conveyance path, can be moved toward and away from the lower pinch roller 8 side, and can be driven and rotated by the lower pinch roller 8 with a sample sheet interposed therebetween. A pinch roller 10 composed of a supported upper pinch roller 9 is disposed, and the separated sample sheet S is conveyed to a supply position via a conveying means such as a feed roller (not shown) disposed further downstream. Is configured to do. Further, the upper pinch roller 9 can move up the upper pinch roller 6 by driving the air cylinder 9S so that the gap between the upper pinch roller 6 and the lower roller 5 can be separated so as not to hinder the conveyance of the sample sheet S.

Further, as shown in FIG. 3, the sample sheet separating and supplying apparatus 1 of the present embodiment has one sample between the upper roller 6 and the lower roller 5 from the change state of the current value measured by the current detector 18. It is possible to determine that the sheet S has been clamped, and further to allow detection signals from the first sensor 15 and the second sensor 16 to be input, and to rotate the paper feed roller 3, the lower roller 5, and the upper roller 6. The control means 17 which controls the drive of each motor to be provided is provided. The control means 17 is connected to the paper feed roller contact / separation motor 4 and is configured to control the paper feed roller 3 to contact and separate from the paper feed cassette 2. Further, the control means 17 is connected to the air cylinder 6S and the air cylinder 9S and raises and lowers the upper roller 6 and the upper pinch roller 9 to provide necessary gaps between the lower roller 5 and the lower pinch roller 8, respectively. It can be formed.

Here, as the operation of the sample sheet separating and supplying apparatus 1 and the sample sheet separating and supplying method of the present embodiment, the control by the control means 17 relating to the separating and supplying of the sample sheet S will be described with reference to FIGS. .

  In the following, the meaning of “rotating” the rollers 3, 5, 6... Means that the control means 17 controls the driving of the motors 3M, 5M, 6M. It shall mean that it is rotated. In each figure, an arrow indicates the direction of movement or rotation of each roller, and a black circle indicates that the roller is stopped.

First, as shown in FIG. 5, the paper feed roller 3 is brought close to the paper feed cassette 2 storing the various types of sample sheets S by the paper feed roller contact / separation motor 4 and stacked on the pressing plate 2a. The sheet feeding roller 3 is pressed against the sample sheet S with an appropriate pressing force. Then, the upper roller 6 is brought close to the lower roller 5 side, and in this state, the paper feed roller 3, the lower roller 5 and the upper roller 6 are rotated in the forward direction, and the space between the lower roller 5 and the upper roller 6 is increased. The sample sheet S is sandwiched between the two and the sample sheet S is conveyed in the forward direction in the conveying direction (1ST in FIG. 4).

As shown in FIG. 6, when the first sensor 15 detects the sample sheet S conveyed while being sandwiched between the lower roller 5 and the upper roller 6 and the detection signal is input to the control means 17, The driving of the motor of the roller 5 is stopped, and the rotation of the lower roller 5 in the forward direction is stopped (2ST in FIG. 4).

At this time, even when the sample sheet S to be conveyed is double-fed, the drive of the lower motor 5M is stopped when the detection signal of the sample sheet S of the first sensor 15 is input, Even if the rotation of the lower roller 5 in the forward direction is stopped, the upper roller 6 still continues to rotate in the forward direction, and the contact frictional force B between the upper roller 6 and the sample sheet S that contacts the upper roller 6 continues. Is larger than the maximum contact friction force A generated between the plurality of sample sheets S, and therefore the uppermost sample sheet S in contact with the upper roller 6 can be further conveyed downstream in the conveyance path. . At this time, the upper roller 6 and the lower roller are swung so that the arm supporting the upper roller 6 contacts and separates from the lower roller 5 in accordance with the stacking dimension of the sample sheet S to be conveyed. The gap of 5 is automatically adjusted.

At that time, the contact frictional force C between the lower roller 5 and the sample sheet S that contacts the lower roller 5 is also larger than the maximum contact frictional force A generated between the plurality of sample sheets S. It is possible to stop the lowest sample sheet S in place. When another sample sheet S exists between the uppermost sample sheet S and the lowermost sample sheet S , the other sample sheet S is generated between the adjacent sample sheet S. Due to the frictional force, the uppermost sample sheet S and the lowermost sample sheet S can be wound.

Thereafter, as shown in FIG. 7, the second sensor 16 detects the uppermost sample sheet S that is continuously conveyed by rolling contact with the upper roller 6, and the detection signal is input to the control means 17. Then, as shown in FIG. 8, the paper feed roller contact / separation motor 45 is driven to move the paper feed roller 3 away from the paper feed cassette 2 so as to contact the sample sheet S stored in the paper feed cassette 2. The contact is released, the rotation of the upper roller 6 in the forward direction is stopped, and the lower roller 5 is rotated in the reverse direction (3ST in FIG. 4).

Thus, when the second sensor 16 detects the uppermost sample sheet S conveyed downstream, the upper roller 6 stops rotating in the forward direction and the lower roller 5 is reversed. by rotating the direction, the state in which the upper roller 6 and the sample uppermost sheet S in contact stopped in place, from the least significant sample sheet S in contact with the lower roller 5 top sample The sheet S can be conveyed upstream in order.

At that time, since the contact frictional force C between the lower roller 5 and the sample sheet S that contacts the lower roller 5 is larger than the maximum contact frictional force A generated between the plurality of sample sheets S , the lower roller 5 The contacting sample sheet S can be transported to the upstream side while being peeled off from the other sample sheet S positioned above. Then, the contact frictional force between the sample sheet S in contact with the upper roller 6 in its B also larger than the maximum contact friction force A generated between the plurality of sample sheet S, the sample sheet S in contact with the upper roller 6 Without being dragged by the other sample sheet S located below, it is possible to stop at that position while being gripped by the upper roller 6.

In this embodiment, the control means 17 and the current detector 18 observe the change in the rotational load of the lower motor 5M, that is, the change in the value of the current flowing through the lower motor 5M, for a predetermined time (for example, 3 seconds). When a stable state is detected in which the current value hardly changes in any time between 10 seconds and 10 seconds), only one sample sheet S is sandwiched between the upper roller 6 and the lower roller 5; to decide. That is, interposed plurality of sample sheet S between the upper roller 6 and the lower roller 5, the lower roller 5 to the reverse rotation, while the sample sheet S conveyed in the reverse direction in the conveying direction is present When the load applied to the lower motor 5M changes at any time depending on the relationship with the sample sheet S to be conveyed, etc., when only one sample sheet S is sandwiched between the upper roller 6 and the lower roller 5 In this case, the sample sheet S is gripped by the contact frictional force with the upper roller 6 and stops there, so that the rotational load of the lower roller 5 is longer than the time required for normal sample sheet S conveyance. The same state continues for a predetermined time. Therefore, by observing this change, it is possible to determine whether or not there is one sample sheet S sandwiched between the upper roller 6 and the lower roller 5.

The lower motor 5M may be locked depending on the thickness of the sample sheet S , the material of the lower roller 5 and the like when rotating in the reverse direction, so use a geared motor with a built-in torque limiter or the like. Even when locked, it is also possible to perform control to determine that only one sample sheet S is sandwiched. Or, simply, the number of driving steps of the lower motor 5M when the lower roller 5 rotates in the forward direction is counted and rotated in the reverse direction by the number of steps, or the sample sheet S It may be configured to rotate in the reverse direction for a preset time or a preset number of steps necessary for conveyance in the reverse direction.

Then, as shown in FIG. 9, the paper feed roller 3 is separated from the paper feed cassette 2, and the upper roller 6 is raised by an air cylinder 6 </ b> S so that the gap between the lower roller 5 and the lower roller 5 is conveyed. Form large enough not to interfere. At the same time, one sample sheet S separated by the lower pinch roller 8 and the upper pinch roller 9 is sandwiched, and the lower pinch roller 8 is rotated in the forward direction (the upper pinch roller 9 sandwiches the sample sheet S) . One sample sheet S is transported downstream of the transport path (4ST in FIG. 4).

With such control, it is possible to separate only the topmost sample sheet S stored in the paper feed cassette 2 from other sample sheets S.

When the number of sample sheets S delivered from the sheet feeding cassette 2 is one from the beginning, when the second sensor 16 detects the sample sheet S in the control described above, While the rotation in the direction is stopped and the lower roller 5 is rotated in the opposite direction, the sample sheet S is in contact with the upper roller 6 and the contact friction force between the lower roller 5 and the lower side roller 5 is larger. Therefore, the sample sheet S can be stopped on the spot as it is.

Then, as shown in FIG. 10, when the first sensor 15 stops detecting the sample sheet S , the driving of the motor 8M of the lower pinch roller 8 is stopped (5ST in FIG. 4), and the sample sheet The conveyance of S is left to conveyance means such as a conveyance roller (not shown). After that, when both the first sensor 15 and the second sensor 16 have not detected the sample sheet S , the process returns to 1ST in FIG. 4, and the separation and conveyance of the next sample sheet S is started.

Thus, according to the sample sheet separator feeder 1 of the present embodiment, it is possible to perform even one by one sample sheets S of various kinds having different properties such as thickness and friction coefficient, of the sample sheet S Tests, inspections, etc. are not interrupted by multiple feeds, and the device does not malfunction, so work efficiency can be improved, and multiple types of sample sheets S can be superimposed and stored in the paper feed cassette. Since it is possible to prevent the worker from being attached to one device, it is possible to reduce labor costs and the like.

  In addition, this invention is not limited to embodiment mentioned above, A various change is possible as needed.

For example, the paper feed motor 3M and the upper motor may be driven by the same motor with a link mechanism interposed. At the time of reverse rotation of the upper motor, the paper feed roller 3 is released from the rolling contact with the sample sheet S stored in the paper feed cassette 2, so that there is no particular problem even if the paper feed roller 3 is rotating.

  Furthermore, the first sensor 15 and the second sensor 16 are not limited to transmission type sensors, but may be reflection type sensors, ultrasonic type sensors, or the like. However, since there are samples such as paper and colored paper with high transmittance, it is desirable to use a transmission type or ultrasonic type sensor.

  In the present embodiment, a contact / separation mechanism is provided in the sheet feed cassette 2 and is configured to contact and separate from the sheet feed roller 3 side. However, the position of the sheet feed cassette 2 is fixed, The paper feed roller 3 may be configured to be in contact with or separated from the upper surface of the paper feed cassette 2.

Sample sheet Sa with a friction coefficient of 0.18 as paper a, sample sheet Sb with a friction coefficient of 0.25 as paper b, and 15 sample sheets Sc with a friction coefficient of 0.11 as paper c, in this order. The upper roller 6 is a metal roller having a diameter of 28 mm (trade name: non-slip roller manufactured by Tsukada Screw Manufacturing Co., Ltd.), the lower roller as the upper roller 6. As the side roller 5, a 28 mm diameter metal roller (trade name non-slip roller, manufactured by Tsukada Screw Co., Ltd.) having a plurality of 40 μm protrusions formed on the surface is used. The surface of the upper roller 6 and the surface of the lower roller 5 are used. The sample sheet separating and supplying apparatus 1 was adjusted in which the gap adjusting means 14 was adjusted so that the gap dimension of the sample was 170 μm.

In the sample sheet separating and supplying apparatus 1 of this embodiment configured as described above, the maximum contact frictional force A generated between the sample sheets S is 0.25 (JIS P 8147: the same applies hereinafter), and the upper roller 6 and The minimum contact friction force B generated between each sample sheet S is 0.8 or more, and the minimum contact friction force C generated between the lower roller 5 and each sample sheet S is 0.5. In other words, the above-described relationship between the tactile friction forces A, B, and C is maintained.

As a result of this driving test, all the various types of sample sheets S stored in the sheet feeding cassette 2 were separated one by one up to the last one, and conveyed to the downstream side of the conveying path.

The perspective view which shows the structure of the conveyance roller of the sample sheet separation supply apparatus of this embodiment. Transmission front view showing the configuration of the conveyance roller of the sample sheet separation and supply apparatus of the present embodiment The circuit diagram which shows the electrical connection of the control means and other drive system in the sample sheet separation supply apparatus of this embodiment The flowchart explaining the control state of the feed roller, the upper roller, and the lower roller according to the state of the first sensor, the second sensor, and the current detector (1ST to 5ST) by the control unit of the present embodiment. FIG. 4 is a schematic diagram for explaining a sample sheet conveyance state and driving / rotating states of the sheet feeding roller, the upper roller, and the lower roller in control (sample sheet separation and supply method) in the present embodiment. FIG. 4 is a schematic diagram for explaining a sample sheet conveyance state and driving / rotating states of the sheet feeding roller, the upper roller, and the lower roller in control (sample sheet separation and supply method) in the present embodiment. FIG. 4 is a schematic diagram for explaining a sample sheet conveyance state and driving / rotating states of the sheet feeding roller, the upper roller, and the lower roller in control (sample sheet separation and supply method) in the present embodiment. FIG. 4 is a schematic diagram for explaining a sample sheet conveyance state and driving / rotating states of the sheet feeding roller, the upper roller, and the lower roller in control (sample sheet separation and supply method) in the present embodiment. FIG. 4 is a schematic diagram for explaining a sample sheet conveyance state and driving / rotating states of the sheet feeding roller, the upper roller, and the lower roller in control (sample sheet separation and supply method) in the present embodiment. FIG. 4 is a schematic diagram for explaining a sample sheet conveyance state and driving / rotating states of the sheet feeding roller, the upper roller, and the lower roller in control (sample sheet separation and supply method) in the present embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sheet | seat separation supply apparatus 2 Paper feed cassette 2a Press plate 3 Paper feed roller 3M Paper feed motor 4 Paper feed roller contact / separation motor 5 Lower roller 5M Lower motor 6 Upper roller 6M Upper motor 6S Air cylinder 7 Conveying roller 8 Lower pinch roller 8M Motor 9 Upper pinch roller 9S Air cylinder 10 Pinch roller 11 Lower roller bearing portion 12 Arm 12a Locking shaft 13 Arm support portion 13a Shaft hole 14 Gap adjusting means 14a Base portion 14b Adjusting member 14c Screw hole 14d Table 15 First sensor 16 Second sensor 17 Control means 18 Current detector S Sample sheet

Claims (3)

In a sample sheet separation and supply device that separates and feeds multiple types of sample sheets with different physical properties one by one ,
Above the paper feed cassette that can store multiple sample sheets in an overlapping manner, it is arranged so that it can be press-contacted with the sample sheet, and is supported by the motor so that it can rotate in the forward direction in the transport direction of the sample sheet Paper feed roller,
A lower roller disposed below the most upstream conveying path and supported by a motor so as to be rotatable in both forward and reverse directions in the conveying direction of the sample sheet, and the lower roller via the conveying path A conveying roller composed of an upper roller that is disposed opposite to the lower roller and can be moved toward and away from the lower roller, and supported by a motor so as to be rotatable in the positive direction in the conveying direction of the sample sheet,
A first sensor disposed immediately downstream of the transport roller in the transport path and capable of detecting a transported sample sheet;
A second sensor disposed immediately downstream of the first sensor in the transport path and capable of detecting a transported sample sheet;
A current detector that detects a current value flowing in a motor that rotates the lower roller, and can detect that only one sample sheet is sandwiched between the upper roller and the lower roller;
A lower pinch roller disposed between the first sensor and the second sensor in the transport path and supported by a motor so as to be rotatable in the forward direction in the transport direction of the sample sheet; and the lower pinch roller A pair of pinch rollers which are arranged opposite to each other via a conveyance path and which can be brought into contact with and separated from the lower pinch roller and supported by the rotation of the lower pinch roller so as to be rotatable. ,
and,
Control means for controlling the driving of each motor for rotating the paper feed roller, the upper roller, the lower roller and the lower pinch roller;
A is the maximum contact friction force generated between the plurality of superimposed sample sheets, A is the minimum contact friction force generated between the upper roller and the sample sheet in contact therewith, and B is the lower side. When the minimum contact friction force generated between the roller and the sample sheet in contact with the roller is C, the contact friction forces A, B, and C are maintained in a relationship of B>C> A. Adjust so that
The control unit rotates the paper feed roller, the lower roller, and the upper roller in the forward direction, and detects the sample sheet that is sandwiched between the lower roller and the upper roller and conveyed in the forward direction. Triggered by the input of the detection signal, the rotation of the lower roller in the forward direction is stopped, and then triggered by the input of the detection signal of the second sensor that has detected the sample sheet. A motor that stops rotation of the roller in the forward direction, separates the paper feed roller from the paper feed cassette, rotates the lower roller in the reverse direction, and causes the current detector to drive the lower roller Detecting a stable state of the current value within a predetermined time, it is determined that one sample sheet is separated, and the rotation of the lower roller in the reverse direction is stopped. The is sandwiched only one sample sheet between the lower pinch roller and an upper pinch roller, the lower pinch roller and an upper pinch roller is rotated in the forward direction, so as to convey only the single sample sheet In addition, a sample sheet separating and supplying apparatus that controls driving of each motor. There is a gap adjusting means for forming a gap of a predetermined dimension constituting the conveying path between the upper roller and the lower roller, and the upper roller is supported by a pair of rollers that can swing. The gap adjusting means is disposed between the front end portions of the members, and is formed so as to be able to adjust a protruding amount protruding from the base portion formed on the roller support member to the lower roller side outside the conveying path. The adjustment member and a gap of a predetermined size that is disposed in the vicinity of the lower roller and forms the conveyance path between the upper roller and the lower roller by contacting the lower end portion of the adjustment member. The sample sheet supply device according to claim 1, wherein the sample sheet supply device is configured by an adjustment member cradle that forms a plate . In the separation and supply method of sample sheets, in which sample sheets of various types having different physical properties are separated and fed one by one,
  Above the paper feed cassette that can store multiple sample sheets in an overlapping manner, it is arranged so that it can be press-contacted with the sample sheet, and is supported by the motor so that it can rotate in the forward direction in the conveying direction of the sample sheet. Paper feed roller,
  A lower roller disposed below the most upstream conveying path and supported by a motor so as to be rotatable in both forward and reverse directions in the conveying direction of the sample sheet, and the lower roller via the conveying path A conveying roller composed of an upper roller that is disposed opposite to the lower roller and can be moved toward and away from the lower roller, and supported by a motor so as to be rotatable in the positive direction in the conveying direction of the sample sheet,
  A first sensor disposed immediately downstream of the transport roller in the transport path and capable of detecting a transported sample sheet;
  A second sensor disposed immediately downstream of the first sensor in the transport path and capable of detecting a transported sample sheet;
  A current detector that detects a current value flowing through a motor that rotates a lower roller and that can detect that only one sample sheet is sandwiched between the upper roller and the lower roller;
  A lower pinch roller disposed between the first sensor and the second sensor in the transport path and supported by a motor so as to be rotatable in the forward direction in the transport direction of the sample sheet; and the lower pinch roller A pair of pinch rollers which are arranged opposite to each other via a conveyance path and which can be brought into contact with and separated from the lower pinch roller and supported by the rotation of the lower pinch roller so as to be rotatable. ,
  and,
  Control means for controlling the driving of each motor for rotating the paper feed roller, the upper roller, the lower roller and the lower pinch roller;
  A is the maximum contact friction force generated between the plurality of superimposed sample sheets, A is the minimum contact friction force generated between the upper roller and the sample sheet in contact therewith, and B is the lower side. When the minimum contact friction force generated between the roller and the sample sheet in contact with the roller is C, the contact friction forces A, B, and C are maintained in a relationship of B> C> A. Adjust so that
  Under the control of the control means, the sheet feeding roller, the lower roller and the upper roller are rotated in the forward direction, and the sample sheet which is sandwiched between the lower roller and the upper roller and conveyed in the forward direction is detected. Triggered by the input of the detection signal of one sensor, the rotation of the lower roller in the forward direction is stopped, and then the input of the detection signal of the second sensor that detects the sample sheet is triggered. And stopping the rotation of the upper roller in the forward direction, and separating the paper feed roller from the paper feed cassette and rotating the lower roller in the reverse direction,
  When the current detector detects the stable state of the current value of the motor that drives the lower roller within a predetermined time, it determines the separation of one sample sheet, and rotates the lower roller in the reverse direction. In addition to stopping, one sample sheet is sandwiched between the lower pinch roller and the upper pinch roller, and the lower pinch roller and the upper pinch roller are rotated in the forward direction to convey only the one sample sheet. A method for separating and supplying a sample sheet.

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