JP2005271542A - Method of determining tip tilting angle of sheet-like member and its apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method of determining a tip tilting angle of a sheet-like member capable of determining not only the tilting direction of the sheet-like member but whether the tilting angle is proper or not, and to provide its apparatus. <P>SOLUTION: The tip of a belt member 1 is sensed by a first sensor 11 and a second sensor 12 both arranged apart at a predetermined space in the widthwise direction in a transporting route. The tilting direction of the tip of the belt member 1 is determined by the sensing order of the first sensor 11 and the second sensor 12. It is determined whether the tip tilting angle θ1 is a proper tilting angle or not, the tip tilting angle θ1 calculated from the movement distance L1 from a time when one of the first sensor 11 and the second sensor 12 senses the tip of the belt member 1 to a time when the other sensor senses it and the distance L2 between sensing positions of the sensors 11 and 12. Accordingly it is possible to determine whether not only the tilting direction of the belt member 1 but the tilting angle are proper or not. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention, for example, in manufacturing a pneumatic tire used as a radial tire for a passenger car, determines whether or not the tip of a belt member conveyed to a forming drum has a predetermined inclination angle in a predetermined inclination direction. The present invention relates to a method and an apparatus for determining the tip inclination angle of the sheet-like member.

  Generally, this type of pneumatic tire includes a tread portion that contacts a road surface, a sidewall portion that forms a side surface of the tire, a shoulder portion that is formed between the tread portion and the sidewall portion, a sidewall portion, and a tire. It is comprised from the bead part located between these wheels.

  In the manufacture of the tire, there is a step of winding an inner liner made of a sheet-like rubber member, a carcass member, and a plurality of belt members on the forming drum in order. In this case, each belt member has a number of steel wires that are inclined with respect to the circumferential direction of the tire, and the tip of the belt member is cut obliquely along the inclination direction of the steel wires. Each belt member is sequentially conveyed to a forming drum by a conveyor, overlapped so that the inclination directions of the steel wires are opposite to each other, and are automatically wound around the forming drum.

  However, when each belt member is transported to the forming drum, since the operation of supplying each belt member to the conveyor is performed manually, each belt member is erroneously transported in the direction in which the inclination direction of the steel wire is the same direction. In some cases, there is a problem in that such an improperly oriented belt member is wound around the molding drum as it is to generate defective products. In addition, depending on the tire specifications, the steel wire inclination direction may be specified for the first belt member and the second belt member, respectively. In this case, the steel wire inclination direction of each belt member may be specified. Even if the directions are opposite to each other, the operator may make a mistake in the direction of inclination of the first and second sheets, and the tire may be manufactured in a direction opposite to the specified inclination direction, resulting in a tire different from the specification.

Therefore, by providing a pair of sensors for detecting the leading edge of the belt member on the conveyor conveyance path at intervals in the width direction of the conveying path, and determining the inclination direction of the belt member tip according to the detection order of each sensor, A device that determines whether or not the orientation of the belt member is appropriate is known (for example, see Patent Document 1).
JP-A-9-201885

  By the way, although the belt member may have different steel wire inclination angles depending on the tire specifications, the belt member supply operation to the conveyor is performed manually, so that other steel wire inclination angles are erroneously different. A belt member may be supplied to the conveyor. However, as described above, it is only possible to determine whether the inclination direction of the belt member is inclined based on the detection order of each sensor. Therefore, if the inclination direction is appropriate, the inclination angle is inappropriate. Even a simple belt member is supplied to the forming drum, and there is a problem that it is not possible to prevent the generation of defective products due to the belt member having an inappropriate inclination angle.

  The present invention has been made in view of the above-mentioned problems, and the object of the present invention is not only the inclination direction of the front end of the sheet-like member but also the inclination of the front end of the sheet-like member that can determine whether or not the inclination angle is appropriate. An object of the present invention is to provide an angle determination method and apparatus.

  In order to achieve the above object, according to the present invention, whether or not the front end of the sheet-like member conveyed in a predetermined direction by the conveying means forms a predetermined inclination angle in a predetermined inclination direction with respect to the width direction of the sheet-like member. In the method of determining the inclination angle of the leading edge of the sheet-like member, the leading edge of the sheet-like member is detected by the first and second sensors arranged at predetermined intervals in the width direction of the conveying path of the conveying means. By determining the inclination direction of the tip of the sheet-like member according to the detection order of the first and second sensors, it is determined whether the inclination direction is a predetermined inclination direction, and one of the first and second sensors is The inclination angle of the leading edge of the sheet-like member is calculated from the movement distance of the sheet-like member from the detection of the leading edge of the sheet-like member to the detection of the other and the distance between the detection positions of the first and second sensors. The inclination angle is to be determined whether a predetermined inclination angle by.

  Further, the present invention provides a sheet shape for determining whether or not the leading end of the sheet-like member conveyed in a predetermined direction by the conveying means has a predetermined inclination angle in a predetermined inclination direction with respect to the width direction of the sheet-like member. In the apparatus for determining the inclination angle of the leading end of the member, a first sensor and a second sensor, which are arranged at predetermined intervals in the width direction of the transport path of the transport means and detect the leading end of the sheet-like member, respectively, 2 determines the inclination direction of the leading edge of the sheet-like member based on the detection order of the two sensors to determine whether the inclination direction is a predetermined inclination direction, and one of the first and second sensors is the leading edge of the sheet-like member. The inclination angle is determined by calculating the tip inclination angle of the sheet-like member from the movement distance of the sheet-like member from when the other is detected and the distance between the detection positions of the first and second sensors. And a determining means for determining the inclination angle or not the.

  Thereby, it is determined whether or not the inclination direction of the front end of the sheet-like member determined by the detection order of the first and second sensors is a predetermined inclination direction, and the movement distance of the sheet-like member and the first and second movements are determined. Since it is determined whether or not the inclination angle calculated from the distance between the detection positions of the sensors is a predetermined inclination angle, the inclination direction of the front end of the sheet-like member and the suitability of the inclination angle are respectively determined.

  Further, the present invention provides a sheet shape for determining whether or not the leading end of the sheet-like member conveyed in a predetermined direction by the conveying means has a predetermined inclination angle in a predetermined inclination direction with respect to the width direction of the sheet-like member. In the method for determining the tip end tilt angle of the member, the tip end of the sheet-like member is moved by the first and second sensors arranged at an interval in a direction that forms an angle inclined with respect to the width direction of the transport path of the transport means. Whether the leading edge inclination angle of the sheet-like member forms a predetermined inclination angle in a predetermined inclination direction by detecting whether the first and second sensors simultaneously detect the leading edge of the sheet-like member. It is determined whether or not.

  Further, the present invention provides a sheet shape for determining whether or not the leading end of the sheet-like member conveyed in a predetermined direction by the conveying means has a predetermined inclination angle in a predetermined inclination direction with respect to the width direction of the sheet-like member. In the apparatus for determining the inclination angle of the leading end of the member, a first and a second are arranged to be spaced apart from each other in a direction that forms an angle inclined with respect to the width direction of the conveying path of the conveying means, and respectively detect the leading end of the sheet-like member. Whether the leading edge inclination angle of the sheet-like member forms a predetermined inclination angle in a predetermined inclination direction by determining whether or not the first and second sensors simultaneously detect the leading edge of the sheet-like member. Determination means for determining whether or not.

  Thus, by determining whether or not the first and second sensors arranged in the direction that forms an angle inclined with respect to the width direction of the transport path simultaneously detect the leading end of the sheet-like member, the sheet-like member Since it is determined whether or not the leading end tilt angle is equal to the predetermined tilt direction in the predetermined tilt direction, it is determined whether the tip tilt direction and the tilt angle of the sheet-like member are appropriate.

  According to the present invention, not only the inclination direction of the leading end of the sheet-like member but also the suitability of the inclination angle can be determined. For example, when a belt member as a sheet-like member is wound around a forming drum in the manufacture of a tire, the belt When a member is transported in an inappropriate direction or an inappropriate belt member having a different inclination angle is transported, the supply of such a belt member to the forming drum can be prevented. Occurrence can be reliably prevented.

  1 to 5 show an embodiment of the present invention. FIG. 1 is a schematic side view of an inclination angle determination device, a forming drum, and a conveyor. FIG. 2 is an outline plan view of the inclination angle determination device and the conveyor. Is a block diagram of an inclination angle determination device, FIG. 4 is an operation explanatory diagram thereof, and FIG. 5 is a flowchart showing an operation of a determination processing unit.

  In this embodiment, the belt member 1 as a sheet-like member is conveyed by a conveyor 2 as a conveying means, and in the step of winding the belt member 1 around the forming drum 3 from the conveyor 2, the tip of the belt member 1 is in a predetermined inclination direction. A method of determining whether or not a predetermined inclination angle is made using the inclination angle determination device 10 will be described.

  The belt member 1 is made of a rubber member disposed between a carcass member (not shown) and a tread member for reinforcing the tire, and has a number of steel wires 1a that are inclined with respect to the circumferential direction of the tire. In this case, the tip of the belt member 1 is cut obliquely along the inclination direction of the steel wire 1a, and the inclination angle θ varies depending on the tire specifications.

  The conveyor 2 includes a number of conveyor rollers 2a arranged along the conveyance path, a pair of side plates 2b arranged on both sides in the width direction of the conveyance path, and guide rollers 2c provided inside each side plate 2b. Then, by rotating each conveyor roller 2a by a driving means (not shown), the belt member 1 is conveyed to the molding drum 3 side. When a plurality of belt members 1 are wound around the forming drum 3, the conveyor 2 is provided for each belt member 1. For example, when the first belt member 1 is supplied from the predetermined conveyor 2 to the forming drum 3, A second belt member 1 is supplied from the conveyor 2 to the forming drum 3.

  The forming drum 3 is rotated by a driving means (not shown) to wind the belt member 1 supplied from the conveyor 2. After winding an inner liner and a carcass member (not shown), a plurality of belt members 1 are wound. It is designed to be wound sequentially.

  The inclination angle determination device 10 includes first and second sensors 11 and 12 that detect the tip of the belt member 1 conveyed by the conveyor 2, a distance sensor 13 that detects a moving distance of the belt member 1 by the conveyor 2, Based on the detection operation of each sensor 11, 12, the determination unit 14 is configured to determine whether or not the tip end inclination angle of the belt member 1 has a predetermined inclination angle in a predetermined inclination direction.

  The first and second sensors 11, 12 are well-known devices such as optical sensors, and are arranged above the conveying path of the conveyor 2 with a predetermined interval L 1 in the width direction, and pass through the belt member. The tip of 1 is detected.

  The distance sensor 13 includes a known device such as an encoder, and detects the moving distance of the belt member 1 by the rotation of the conveyor roller 2a.

  The determination processing unit 14 is configured by a microcomputer, and is connected to the sensors 11 and 12, the distance sensor 13, and the conveyor 2. The determination processing unit 14 is connected to a central processing unit 4 having information on the tip inclination direction and the inclination angle of the belt member 1 such as the specifications of the tire to be manufactured, and the tip inclination direction of the belt member 1 wound around the forming drum 3. In addition, tilt angle data is input from the central processing unit 4.

  Here, the operation of the determination processing unit 14 will be described with reference to the flowchart of FIG. First, when the belt member 1 is conveyed by the conveyor 2 and the tip thereof is detected by one of the first and second sensors 11 and 12 (S1), measurement of the distance sensor 13 is started (S2), When the tip of the belt member 1 is detected by the other of the second sensors 11 and 12 (S3), the measurement of the distance sensor 13 is ended (S4). Here, the distance measured by the distance sensor 13 is L1 (S5), and the inclination angle θ1 is calculated based on the distance L2 between the detection positions of the sensors 11 and 12 and the distance L1 (S6). That is, the inclination angle θ1 is calculated by the following equation (1) from the relationship between the movement distance L1 of the belt member 1 and the distance L2 (specified value) between the detection positions of the sensors 11 and 12.

tanθ1 ＝ L1 / L2 (1)
Next, the inclination direction of the tip of the belt member 1 is determined according to the detection order of the first and second sensors 11 and 12 (S7). For example, when the first sensor 11 detects before the second sensor 12 as shown in FIG. 4, the inclination direction of the tip of the belt member 1 is as shown in FIG. If it is determined that the tilt direction is tilted backward from the right side to the left side and this direction is not an appropriate tilt direction (S8), an alarm such as an alarm buzzer is issued (S9), and the conveyor 2 is stopped (S10). ).

  If the inclination direction is an appropriate direction (S8), it is determined whether the inclination angle θ1 calculated in step S6 is appropriate. That is, when the inclination angle θ1 is not an appropriate inclination angle θ0 (value previously input from the central processing unit 4) (S11), an alarm such as an alarm buzzer is issued (S9) and the conveyor 2 is stopped (S10). . In this case, in consideration of some errors, if the inclination angle θ1 is within a range obtained by adding or subtracting a predetermined allowable value α to the inclination angle θ0, that is, within a range of θ0 ± α, it is determined to be appropriate. If it is determined in step S11 that the tilt angle θ1 is an appropriate tilt angle θ0, the program is terminated.

  Thus, according to this embodiment, while detecting the front-end | tip of the belt member 1 with the 1st and 2nd sensors 11 and 12 arrange | positioned in the conveyance path | route of the conveyor 2 at predetermined intervals in the width direction, The inclination direction of the front end of the belt member 1 is determined according to the detection order of the first and second sensors 11 and 12, and one of the first and second sensors 11 and 12 detects the front end of the belt member 1 and then the other. It is determined whether or not the tip end inclination angle θ1 of the belt member 1 calculated based on the movement distance L1 of the belt member 1 until the detection is detected and the distance L2 between the detection positions of the sensors 11 and 12 is a predetermined inclination angle θ0. Thus, not only the inclination direction of the tip of the belt member 1 but also the suitability of the inclination angle can be determined. Thereby, when the belt member 1 is conveyed in an inappropriate direction or an inappropriate belt member 1 having a different inclination angle is conveyed, such a belt member 1 may be supplied to the forming drum. Therefore, it is possible to reliably prevent the occurrence of defective products.

  In addition, since the distance from when one of the sensors 11 and 12 detects the leading edge of the belt member 1 to when the other is detected, the movement distance L1 of the belt member 1 can be calculated easily and accurately. Can do.

  6 to 10 show another embodiment of the present invention. FIG. 6 is a schematic side view of an inclination angle determination device, a forming drum, and a conveyor. FIG. 7 is a schematic plan view of the inclination angle determination device and the conveyor. 8 is a block diagram of the tilt angle determination device, FIG. 9 is an operation explanatory diagram thereof, and FIG. 10 is a flowchart showing the operation of the determination processing unit. In addition, the same code | symbol is attached | subjected and shown to the component equivalent to the said embodiment.

  The inclination angle determination device 20 of this embodiment includes a first sensor 21 and a pair of second sensors 22 that detect the tip of the belt member 1 conveyed by the conveyor 2, and each second sensor 22 is connected to the conveyor 2. Based on the sensor moving mechanism 23 that moves in the width direction of the transport path and the detection operations of the sensors 21 and 22, it is determined whether or not the tip end tilt angle of the belt member 1 is a predetermined tilt angle in a predetermined tilt direction. And a determination processing unit 24.

  The first sensor 21 is composed of a known device such as an optical sensor, and is arranged at the center in the width direction above the conveyance path of the conveyor 2 and detects the tip of the belt member 1 passing below the first sensor 21. .

  Each of the second sensors 22 includes a known device such as an optical sensor, and is arranged above the conveyance path of the conveyor 2 with a gap in the width direction, and detects the tip of the belt member 1 that passes below the second sensor 22. It is like that.

  The sensor moving mechanism 23 includes a pair of support members 23a that respectively support the second sensors 22, a screw shaft 23b that is screwed into the support members 23a, and a motor 23c that rotates the screw shaft 23b. It is composed of The support members 23a are arranged at intervals in the width direction of the transport path of the conveyor 2, and the second sensors 22 are fixed to the support members 23a. The screw shaft 23b is disposed so as to extend in the width direction of the conveyance path, and the support members 23a are screwed to both ends thereof. In this case, opposite-direction screws are formed on both ends of the screw shaft 23b, and the support members 23a are simultaneously moved in opposite directions by the rotation of the screw shaft 23b. The motor 23c is a motor capable of controlling the amount of rotation, such as a stepping motor, and is connected to the screw shaft 23b via a pair of pulleys 23d and a belt 23e.

That is, in the sensor moving mechanism 23, the first sensor 21 and the second sensor are moved as shown in FIG. 7 by rotating the screw shaft 23b to move the second and third sensors 22 to arbitrary positions. The inclination angle θ2 formed by the line segment A connecting with the line 22 in the width direction of the transport path is set to an angle that coincides with the inclination angle θ0 of the belt member 1 (value previously input from the central processing unit 4). . In this case, the distance L3 between the first sensor 21 and the second sensor 22 in the width direction of the transport path is an inclination angle θ0 that the first and second sensors 21 and 22 should make with respect to the width direction of the transport path. Is given by the following equation (2) from the distance L4 (specified value) between the first sensor 21 and the second sensor 22 in the transport direction and the inclination angle θ0:
tanθ0 = L4 / L3 (2)
In the sensor moving mechanism 23, each second sensor 22 is moved so that the distance between the first and second sensors 22 in the width direction of the transport path becomes the calculated distance L3.

  The determination processing unit 24 is constituted by a microcomputer and is connected to the sensors 21 and 22 and the motor 23c of the sensor moving mechanism 23. Further, as in the above-described embodiment, the central processing unit 4 is connected to the determination processing unit 24 so that the data of the tip inclination direction and the inclination angle of the belt member 1 wound around the forming drum 3 are input from the central processing unit 4. It has become.

  Here, the operation of the determination processing unit 24 will be described with reference to the flowchart of FIG. First, the belt member 1 is conveyed by the conveyor 2, and the front end of the belt member 1 is detected by the first sensor 21 and one second sensor 22 (or the other second sensor 22 when the inclination direction of the belt member 1 is opposite). When detected (S20, S21), it is determined whether or not the inclination direction and the inclination angle of the belt member 1 are appropriate. That is, when the front end of the belt member 1 is detected simultaneously by the first sensor 21 and the second sensor 22 (S22), it is determined that the inclination direction and the inclination angle of the belt member 1 are appropriate, and the program ends. To do. When the leading end of the belt member 1 is not simultaneously detected by the first sensor 21 and the second sensor 22 (S22), the inclination angle θ of the conveyed belt member 1 is the first and second sensors. Since the inclination angle θ2 of the belt member 1 does not coincide with that of the belt member 1, the belt member 1 is detected from one of the first and second sensors 11 and 12 until it is detected by the other. The moving distance L5 is measured by the distance sensor 13 (S23), and the inclination angle θ of the belt member 1 is calculated based on the distances L3 and L4 between the first sensor 21 and the second sensor 22 and the moving distance L5. (S24). That is, when the first sensor 11 detects the belt member 1 first, the inclination angle θ is calculated by the following equation (3), and the second sensor 12 detects the belt member 1 first. In such a case, the inclination angle θ is calculated by the following equation (4).

tanθ = L3 / (L4−L5) (3)
tanθ = L3 / (L4 + L5) (4)
If the calculated inclination angle θ is within the predetermined allowable angle range α (S25), it is determined that the inclination direction and the inclination angle of the belt member 1 are appropriate, and the program ends. If the inclination angle θ is not within the predetermined allowable angle range α (S25), it is determined that the inclination direction and the inclination angle of the belt member 1 are not appropriate, an alarm such as an alarm buzzer is issued (S26), and the conveyor 2 Is stopped (S27).

  As described above, according to the present embodiment, the first and second sensors 21 and 22 disposed at a distance from each other in the direction forming the predetermined inclination angle θ2 with respect to the width direction of the transport path of the conveyor 2. By detecting the front end of the belt member 1 and determining whether the first and second sensors 21 and 22 detect the front end of the belt member 1 at the same time, the front end inclination angle of the belt member 1 is a predetermined inclination. Since it is determined whether or not the predetermined inclination angle θ0 is formed in the direction, not only the inclination direction of the tip of the belt member 1 but also the suitability of the inclination angle can be determined as in the above-described embodiment. In this case, since the determination can be performed in a short time and a short distance as compared with the embodiment, it is advantageous when the conveyance distance to the forming drum 3 is short.

  In addition, the first sensor 21 is disposed at the center in the width direction of the transport path, and the pair of second sensors 22 are disposed on both sides in the width direction of the transport path so as to be spaced apart from each other. Since one of the second sensors 22 detects the tip of the belt member 1 at the same time, whether or not the inclination direction and the inclination angle are appropriate regardless of the inclination direction of the belt member 1 is determined. It can be determined, which is advantageous when dealing with a plurality of types of specifications.

  Further, when the front end of the belt member 1 is not detected by the first and second sensors 21 and 22 at the same time, the belt member 1 is detected by one of the first and second sensors 11 and 12. The inclination angle θ calculated based on the moving distance L5 of the belt member 1 from the first sensor 21 to the second sensor 22 and the distances L3 and L4 between the first sensor 21 and the second sensor 22 is a predetermined allowable angle range α. If the inclination angle θ is within the range, it is determined that the inclination direction and the inclination angle of the belt member 1 are appropriate. Therefore, even when the strict accuracy is not required for the inclination angle θ, it is determined whether the inclination angle is appropriate or not. It can be performed accurately within an allowable range.

  In addition, since each second sensor 22 is provided so as to be movable in the width direction of the transport path, the inclination angles of the first sensor 21 and the second sensor 22 can be obtained by moving the second sensors 22 and 23. θ2 can be set to an arbitrary angle, and it is possible to accurately cope with belt members of other specifications having different tip inclination angles.

  Further, since each second sensor 22 is screwed to the screw shaft 23b and each second sensor 22 is moved by the rotation of the screw shaft 23b, each second sensor 22 is surely secured by a simple structure. This is extremely advantageous for practical use.

  In this case, each second sensor 22 is screwed to both ends of the screw shaft 23b, and screws opposite to each other are formed on both ends of the screw shaft 23b, and each second sensor 22 is rotated by rotation of the screw shaft 23b. 22 are moved simultaneously in opposite directions, the inclination angle of the first sensor 21 and the one second sensor 22 and the inclination angle of the first sensor 21 and the other second sensor 22 are set. And the inclination angle can be easily set.

  Further, an inclination angle θ0 that the first and second sensors 21 and 22 should make with respect to the width direction of the transport path, a distance L3 between the first and second sensors 21 and 22 in the width direction of the transport path, Based on the relationship with the distance L4 between the first and second sensors 21 and 22 in the transport direction, the distance L3 between the first and second sensors 21 and 22 in the width direction (sensor movement direction) of the transport path is calculated. Since the second sensor 22 is moved so that the distance L3 becomes the calculated value, the inclination angle θ2 of the first sensor 21 and the second sensor 22 can be automatically set. When the specification is changed, the setting of the inclination angle θ2 can be quickly changed.

  In the second embodiment, the second sensors 22 are provided so as to be movable in the width direction of the transport path. However, for example, the second sensors 22 are fixed and the first sensors 21 are fixed. If the inclination angle of the first sensor 21 and the second sensor 22 can be changed, for example, the first sensor 21 and the second sensor 22 can be moved along the conveying direction of the conveyor 2, either the first sensor 21 or the second sensor 22 can be moved. You may make it move, and you may make it move to which direction.

Schematic side view of an inclination angle determination device, a forming drum, and a conveyor showing an embodiment of the present invention Schematic plan view of inclination angle determination device and conveyor Block diagram of tilt angle determination device Operation explanatory diagram of tilt angle determination device A flowchart showing the operation of the determination processing unit The schematic side view of the inclination-angle determination apparatus which shows other embodiment of this invention, a forming drum, and a conveyor Schematic plan view of inclination angle determination device and conveyor Block diagram of tilt angle determination device Operation explanatory diagram of tilt angle determination device A flowchart showing the operation of the determination processing unit

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Belt member, 2 ... Conveyor, 10 ... Inclination angle determination apparatus, 11 ... 1st sensor, 12 ... 2nd sensor, 14 ... Determination processing part, 20 ... Inclination angle determination apparatus, 21 ... 1st sensor, 22 ... 2nd sensor, 23 ... Sensor moving mechanism, 23b ... Screw shaft, 23c ... Motor, 24 ... Judgment processing part.

Claims (10)

Determining whether or not the leading end of the sheet-like member is conveyed in a predetermined direction by the conveying means to determine whether or not the leading end of the sheet-like member has a predetermined inclination angle in a predetermined inclination direction with respect to the width direction of the sheet-like member In the method
While detecting the leading edge of the sheet-like member by the first and second sensors arranged at a predetermined interval in the width direction of the conveying path of the conveying means,
By determining the inclination direction of the tip of the sheet-like member according to the detection order of the first and second sensors, it is determined whether the inclination direction is a predetermined inclination direction,
From one of the first and second sensors detecting the leading edge of the sheet-like member until the other is detected, and the distance between the detection positions of the first and second sensors from the movement distance of the sheet-like member A method for determining a tip end tilt angle of a sheet-like member, comprising: calculating a tip end tilt angle of the member to determine whether or not the tilt angle is a predetermined tilt angle. Determining whether or not the leading end of the sheet-like member is conveyed in a predetermined direction by the conveying means to determine whether or not the leading end of the sheet-like member has a predetermined inclination angle in a predetermined inclination direction with respect to the width direction of the sheet-like member In the method
Detecting the leading edge of the sheet-like member by first and second sensors arranged at intervals in a direction that forms an angle inclined with respect to the width direction of the conveying path of the conveying means;
By determining whether or not the first and second sensors simultaneously detect the leading edge of the sheet-like member, it is determined whether or not the leading-edge inclination angle of the sheet-like member forms a predetermined inclination angle in a predetermined inclination direction. A method for determining the tip inclination angle of a sheet-like member. A sheet from when one of the first and second sensors detects the leading edge of the sheet-like member until the other is detected when the leading edge of the sheet-like member is not simultaneously detected by the first and second sensors Determining whether the inclination angle is within a predetermined inclination angle range by calculating the tip inclination angle of the sheet-like member from the movement distance of the sheet-like member and the distance between the detection positions of the first and second sensors. The method for determining a tip inclination angle of a sheet-like member according to claim 2. Determining whether or not the leading end of the sheet-like member is conveyed in a predetermined direction by the conveying means to determine whether or not the leading end of the sheet-like member has a predetermined inclination angle in a predetermined inclination direction with respect to the width direction of the sheet-like member In the device
A first sensor and a second sensor, which are arranged at predetermined intervals in the width direction of the transport path of the transport means and detect the leading edge of each sheet-like member,
By determining the inclination direction of the tip of the sheet-like member according to the detection order of the first and second sensors, it is determined whether the inclination direction is a predetermined inclination direction, and one of the first and second sensors is the sheet. By calculating the tip inclination angle of the sheet-like member from the distance traveled by the sheet-like member from the detection of the tip of the sheet-like member to the detection of the other and the distance between the detection positions of the first and second sensors And a determination means for determining whether or not the inclination angle is a predetermined inclination angle. Determining whether or not the leading end of the sheet-like member is conveyed in a predetermined direction by the conveying means to determine whether or not the leading end of the sheet-like member has a predetermined inclination angle in a predetermined inclination direction with respect to the width direction of the sheet-like member In the device
A first sensor and a second sensor, which are arranged at intervals from each other in a direction forming an angle inclined with respect to the width direction of the transport path of the transport means, and respectively detect the leading edge of the sheet-like member;
By determining whether or not the first and second sensors simultaneously detect the leading edge of the sheet-like member, it is determined whether or not the leading-edge inclination angle of the sheet-like member forms a predetermined inclination angle in a predetermined inclination direction. And a determination means for determining the tip end inclination angle of the sheet-like member. The first sensor is arranged at the center in the width direction of the conveyance path, and the pair of second sensors are arranged on both sides in the width direction of the conveyance path at intervals.
The sheet-like member according to claim 5, wherein the determination unit is configured to determine whether or not the first sensor and any one of the second sensors simultaneously detect the leading edge of the sheet-like member. Tip inclination angle determination device. A sheet from when one of the first and second sensors detects the leading edge of the sheet-like member until the other is detected when the leading edge of the sheet-like member is not simultaneously detected by the first and second sensors Determination of whether or not the inclination angle is within a predetermined inclination angle range by calculating the tip inclination angle of the sheet-like member from the movement distance of the member and the distance between the detection positions of the first and second sensors The apparatus according to claim 5 or 6, further comprising a means. The sheet-like sheet according to claim 5, 6 or 7, further comprising sensor moving means for moving one of the first and second sensors in either the width direction of the conveyance path or the conveyance direction. Member tip inclination angle determination device. The sensor moving means comprises a screwing member that is screwed to a sensor to be moved, and a motor that moves the sensor in the width direction of the conveyance path or the conveyance direction by rotating the screwing member. The sheet | seat-shaped member tip inclination angle determination apparatus of Claim 8. The sensor moving means includes a tilt angle that the first and second sensors should make with respect to the width direction of the transport path, a distance between the first and second sensors in the width direction of the transport path, and transport of the transport path. The distance between the first and second sensors in the moving direction of the sensor is calculated based on the relationship with the distance between the first and second sensors in the direction, and the distance between the first and second sensors in the same direction 10. The apparatus according to claim 8, wherein the sensor is moved so that the calculated value becomes the calculated value.

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