JP5976294B2 - Sheet member joining apparatus and manufacturing method - Google Patents

Description

  The present invention relates to a sheet member bonding apparatus and a sheet member manufacturing method for bonding end portions of sheet members.

  Unvulcanized tires are molded from various sheet members that are tire constituent members. The sheet member is formed into a sheet shape from unvulcanized rubber (or unvulcanized rubber and another member) and used for molding an unvulcanized tire. For example, a sheet-like carcass ply is made of unvulcanized rubber and a cord and is wound around a molding drum. Both ends of the carcass ply are joined by a joining device on the forming drum. Conventionally, a manual joining device has been used as this joining device.

  A conventional joining apparatus includes a bevel gear for joining and is manually operated. The joining device sandwiches the end portions of the sheet members and joins the end portions of the sheet members using a bevel gear. At that time, the bevel gear is rotated by a motor, and the bevel gear is manually pressed against the end of the sheet member. The bevel gear is moved manually to join the end portions of the sheet member. However, since the conventional joining apparatus is heavy (for example, about 13 kg in total weight), it is difficult to handle. For this reason, when a person carries out the work with the joining device, there is a concern that the way of working varies. Further, in the sandwiching type joining apparatus, since the end portion of the sheet member is lifted and joined, an operation of manually pressing the end portion of the joined sheet member also occurs.

On the other hand, conventionally, a joining apparatus that automatically joins end portions of sheet members with a joining roller is known (see Patent Documents 1 to 4).
However, in these conventional joining devices, it is difficult to cope with the inclination of the sheet member. That is, in order to uniformly join the end portions of the sheet member, it is necessary to press a predetermined position of the joining roller against the end portion of the sheet member. However, in the conventional joining apparatus, the joining roller is pressed against the sheet member in a constant state. Therefore, when the sheet member is inclined or when the inclination is changed, the predetermined position of the joining roller may be deviated from the end portion of the sheet member. In connection with this, there exists a possibility that the joining precision of the edge parts of a sheet | seat member may fluctuate. In particular, when the inclination of the sheet member increases, it becomes difficult to join the end portions of the sheet member with high accuracy.

JP 7-276530 A JP-A-8-238686 Japanese Patent Laid-Open No. 2003-71951 JP 2007-320196 A

  The present invention has been made in view of the above-described conventional problems, and an object thereof is to join the end portions of the sheet member with high accuracy in response to the inclination of the sheet member.

The present invention is a sheet member joining device that is disposed above the end portions of a sheet member and joins the end portions of the sheet members, and rolls on the end portions of the sheet member to perform predetermined engagement. A pair of joining members that engage and join the end portions of the sheet member between teeth that mesh with each other at a position; a moving device that moves the pair of joining members along the end portions of the sheet member; and the engagement of the pair of joining members A change device for changing the insertion position, and a position adjusting means for adjusting the biting position of the pair of joining members on the end portions of the sheet member by the change device in response to the inclination of the sheet member. The member is tilted in the reverse direction with respect to the upper side so that the axis of each other intersects at the center plane between the pair of joining members in a state where the biting position is located on the end portion of the sheet member , and the position adjusting means Detecting the inclination of the sheet member And stage, on the basis of the detection result of the detecting means, a joining device for a seat member having a control device which controls the change unit is changed in accordance with biting position of the pair of joint members to the inclination of the seat member.
Moreover, this invention joins the edge parts of a sheet member by a pair of joining member of the joining apparatus of the sheet member arrange | positioned above the edge part of a sheet member, and manufactures the joined sheet member. In the manufacturing method, the sheet member joining apparatus rolls on the end portion of the sheet member and bites and joins the end portions of the sheet member between the teeth meshing with each other at a predetermined biting position. In a state where the biting position is located on the end portion of the sheet member, a pair of joining members that are inclined in the reverse direction with respect to the upper side so that the axes of each other intersect at the center plane between the pair of joining members, a pair of joint members is moved along the edge of the sheet member, a pair of joining members to roll on the end portion of the sheet member, the ends of the sheet member, biting given pair of the joining members Biting between teeth that mesh with each other in position And bonding in, in response to the inclination of the seat member, by changing the biting position of the pair of joint members by changing device, a position for adjusting the biting position of the pair of joint members on the end portions of the sheet member An adjustment step, the position adjustment step detects the inclination of the sheet member by the detection means, and the control device controls the change device based on the detection result of the detection means in the detection step, And a step of changing the biting position of the joining member according to the inclination of the sheet member.

  According to the present invention, the end portions of the sheet member can be joined with high accuracy corresponding to the inclination of the sheet member.

It is a side view which shows the joining apparatus of the sheet | seat member of this embodiment. It is a figure which shows a pair of joining member. It is sectional drawing of the joining apparatus seen by the arrow X3-X3 line | wire of FIG. It is a figure which shows the holding member inclined by the inclination apparatus. It is a figure which shows the sheet | seat member inclined with the joining apparatus.

An embodiment of a sheet member bonding apparatus (hereinafter simply referred to as a bonding apparatus) according to the present invention will be described with reference to the drawings.
The joining device of this embodiment is an automatic joining device for sheet members, and automatically joins the end portions (joining end portions) at which the sheet members are abutted to each other. A joining apparatus joins edge parts, and manufactures the sheet member (joint sheet member) by which the edge part was joined.

  The sheet member may be a member made of unvulcanized rubber and another member, or may be a member made of only unvulcanized rubber. The sheet member is formed into a sheet shape from rubber. The sheet member is formed into a predetermined shape by cutting or the like. The joining device abuts and joins end portions of one or a plurality of sheet members. Hereinafter, a carcass ply that is a tire constituent member will be described as an example of the seat member. This sheet member (carcass ply) has a plurality of cords (for example, metal cords). The sheet member is disposed on the outer periphery of the forming drum in the process of forming the unvulcanized tire. The both end portions of the sheet member are joined to form the sheet member in a cylindrical shape.

FIG. 1 is a side view showing the joining apparatus of this embodiment. In FIG. 1, the principal part of a joining apparatus is shown typically. A cross-sectional view of the forming drum 4 and the sheet member S is also shown.
As illustrated, the joining device 1 includes a pair of joining members 10 (only one is shown in FIG. 1), a pressing device 2 that presses the joining member 10 against the sheet member S, and a moving device 3 that moves the joining member 10. The change device 20 and the position adjusting means 40 are provided. The joining device 1 joins the sheet member S on the forming drum 4.

  The forming drum 4 is a support that supports the sheet member S to be joined when the unvulcanized tire is formed. The sheet member S is wound around the outer periphery of the forming drum 4 once. The forming drum 4 holds the cylindrical sheet member S on the outer periphery. The forming drum 4 has a cylindrical shape and is rotated around an axis line by a rotation driving device (not shown). The rotational drive device includes a motor and a transmission mechanism that transmits the rotational power of the motor to the forming drum 4. The forming drum 4 rotates the sheet member S and stops at an arbitrary rotation angle.

  The sheet member S is wound around the forming drum 4 or the forming drum 4 on which other members are arranged. The sheet member S is attached to the forming drum 4. Both end portions of the sheet member S are arranged in a predetermined direction (for example, the axial direction of the forming drum 4). Further, both end portions of the sheet member S are arranged to face each other and supported by the forming drum 4. The joining device 1 joins the end portions of the sheet member S to each other by the pair of joining members 10 on the forming drum 4. When joining the end portions, the pair of joining members 10 are moved in the moving direction (joining direction) T by the moving device 3.

  FIG. 2 is a view showing a pair of joining members 10. 2A is a front view of the pair of joining members 10 as viewed from the direction of the arrow X1 in FIG. 2B is a plan view of the pair of joining members 10 as seen from the direction of the arrow X2 in FIG. FIG. 2B schematically shows the pair of joining members 10. In FIG. 2, end portions S1 and S2 of the sheet member S are also shown.

  The pair of joining members 10 are bevel gears constituting the biting means of the sheet member S. The pair of joining members 10 have a truncated cone shape, and are respectively attached to the central shaft 11. The central shaft 11 is supported by a support member 12. The joining member 10 rotates around the central axis 11. The pair of joining members 10 are inclined in opposite directions so that the outer circumferences thereof are in contact with the sheet member S. The axes of the pair of joining members 10 intersect at the center plane between the pair of joining members 10.

  The pair of joining members 10 includes a plurality of teeth 13 formed on the edge and a plurality of protrusions 14 formed on the outer periphery. The plurality of teeth 13 are protrusions and are formed at equal intervals in the circumferential direction of the bonding member 10. The teeth 13 of the pair of joining members 10 are meshed at a predetermined meshing position (meshing position) 15. When the plurality of teeth 13 are sequentially engaged with each other, the pair of joining members 10 are rotated at the same speed in conjunction with each other. The ridges 14 are formed along the circumferential direction of the joining member 10. The plurality of protrusions 14 are arranged side by side on a predetermined portion of the joining member 10 including the teeth 13. The plurality of protrusions 14 are pressed against the end portions S1 and S2 of the sheet member S.

  The pair of joining members 10 is pressed against the end portions S1 and S2 of the sheet member S and moves along the end portions S1 and S2. At that time, the biting position 15 of the pair of joining members 10 is pressed against the sheet member S. Moreover, a pair of joining member 10 is rotated with the motor (not shown) which is a rotational drive apparatus. The pair of joining members 10 roll on the ends S1 and S2 of the sheet member S to join the ends S1 and S2. The end portions S <b> 1 and S <b> 2 are engaged between the teeth 13 that mesh with each other at a predetermined engagement position 15, and are joined by the teeth 13 of the joining member 10. The joining apparatus 1 joins edge part S1, S2 continuously by a pair of joining member 10, and forms the sheet | seat member S in a cylinder shape. Thus, the predetermined biting position 15 is a position (joining position) for biting and joining the end portions S1 and S2 set to the teeth 13 that mesh with each other.

  The pressing device 2 (see FIG. 1) of the joining device 1 includes a piston / cylinder mechanism. The piston rod 2A moves in and out of the cylinder (air cylinder) 2B. A connecting member 5 is fixed to the tip of the piston rod 2A. The connecting member 5 is a frame (or bracket) in which each part of the joining device 1 is connected. The pair of joining members 10 are attached to the connecting member 5. The pressing device 2 operates the piston / cylinder mechanism to move the pair of joining members 10 together with the connecting member 5. As a result, the pair of joining members 10 approaches the sheet member S or moves away from the sheet member S. The pressing device 2 presses the pair of joining members 10 against the sheet member S with a predetermined pressure.

  The moving device 3 includes a guide rail 3A and a moving member 3B. The guide rail 3 </ b> A is arranged linearly above the forming drum 4. The moving member 3B is attached to the guide rail 3A and moves along the guide rail 3A. The pressing device 2 is fixed to the lower surface of the moving member 3B and moves integrally with the moving member 3B. Further, the moving device 3 has a drive device (not shown) that moves the moving member 3B. For example, the drive device includes a screw shaft, a nut attached to the screw shaft, and a motor that rotates the screw shaft. The nut is fixed to the moving member 3B. The drive device rotates the screw shaft to move the nut and the moving member 3B.

  The moving device 3 moves the pressing device 2, the connecting member 5, and the pair of joining members 10 in the moving direction T by the movement of the moving member 3B. When joining the sheet member S, the moving device 3 moves the pair of joining members 10 along the end portions S1 and S2 of the sheet member S. The pair of joining members 10 are pressed against the end portions S1 and S2 of the sheet member S by the pressing device 2 to join the end portions S1 and S2. When the sheet member S is inclined, the biting position 15 of the pair of joining members 10 is changed by the changing device 20 in accordance with the inclination of the sheet member S.

  The changing device 20 changes the biting position 15 of the pair of joining members 10 by inclining the pair of joining members 10. The changing device 20 includes a holding member 21 that holds the pair of joining members 10 and a tilting device 30 that tilts the holding member 21. The holding member 21 is rotatably attached to the connecting member 5. The tilting device 30 tilts the holding member 21 by rotating the holding member 21. The tilting device 30 includes a motor 31, a rotating shaft 32, and a worm gear 33. The motor 31 is a rotational drive device and is fixed to an arm 6 provided on the connecting member 5. The arm 6 is disposed toward the front in the movement direction T from the connecting member 5.

FIG. 3 is a cross-sectional view of the joining apparatus 1 as seen in the direction of arrows X3-X3 in FIG.
The holding member 21 is a frame-like member and has support shafts 22 and 23 fixed to both side surfaces. Each of the support shafts 22 and 23 is rotatably attached to the lower end of the connecting member 5 (only part of which is shown in FIG. 3). The holding member 21 is supported by the support shafts 22 and 23 and rotates (inclines) about the support shafts 22 and 23. The support member 12 described above is fixed to the holding member 21. The central axis 11 of the pair of joining members 10 is arranged on a straight line connecting the axes of the support shafts 22 and 23. One support shaft 22 passes through the connecting member 5 and is connected to the tilting device 30.

  The motor 31 of the tilting device 30 is a stepping motor, for example. The motor 31 rotates the rotation shaft 32 and controls the rotation angle of the rotation shaft 32. The worm gear 33 includes a worm 33A and a worm wheel 33B. The worm 33 </ b> A is fixed to the tip of the rotating shaft 32. The worm wheel 33 </ b> B is fixed to the support shaft 22 of the holding member 21. The tilting device 30 rotates the motor 31 to rotate the worm 33A. The worm wheel 33B and the support shaft 22 are rotated by the rotation of the worm 33A. The tilting device 30 rotates the support shaft 22 and the holding member 21 by the worm gear 33. Thereby, the holding member 21 inclines. The pair of connecting members 10 are inclined integrally with the holding member 21. The biting position 15 of the pair of joining members 10 is changed by 360 ° by the tilting device 30.

FIG. 4 is a view showing the holding member 21 tilted by the tilting device 30. In FIG. 4, the holding member 21 before and after the inclination is indicated by a dotted line. Further, the biting position 15 is virtually indicated by a triangle. The vertex of the triangle is the optimum biting position 15.
The inclination device 30 adjusts the biting position 15 of the pair of joining members 10 by adjusting the inclination angle of the holding member 21 as shown in the figure. The changing device 20 changes the biting position 15 to an arbitrary position in the rotation direction of the holding member 21 by the tilting device 30. The changing device 20 stops the holding member 21 and the pair of joining members 10 to maintain the biting position 15 at a fixed position.

  The joining device 1 (see FIG. 1) controls the changing device 20 by the position adjusting means 40 to adjust the biting position 15 of the pair of joining members 10. The position adjusting means 40 adjusts the biting position 15 so that the biting position 15 is positioned on the ends S1 and S2 of the sheet member S. The position adjusting means 40 includes a control device 7 that controls the changing device 20 and an inclination detecting means 41. The control device 7 includes a computer having a microprocessor and a memory (ROM, RAM). The control device 7 changes the biting position 15 by controlling the motor 31 of the changing device 20. The control device 7 is connected to each part of the joining device 1 and controls the whole joining device 1. The detecting means 41 detects the inclination at the end portions S1 and S2 of the sheet member S during the joining of the sheet member S.

  Here, “on the ends S1 and S2 of the sheet member S” means a state in contact with the ends S1 and S2 of the sheet member S and on the surfaces of the ends S1 and S2. Therefore, the pair of joining members 10 rolls in a state where they are in contact with the end portions S1 and S2 of the sheet member S. The biting position 15 for joining the sheet member S set to the pair of joining members 10 is adjusted to be in contact with the end portions S1 and S2 of the sheet member S.

  In the present embodiment, the detection means 41 has a distance measuring device 42 attached to the lower end of the arm 6. The distance measuring device 42 is disposed in front of the moving direction T with respect to the pair of joining members 10. The distance measuring device 42 is a distance sensor that measures a distance with a laser or an ultrasonic wave, and is disposed toward the surface of the sheet member S. The distance measuring device 42 always measures the distance L between the sheet member S and outputs the measurement result (measurement distance) to the control device 7. The distance L between the distance measuring device 42 and the sheet member S changes corresponding to the inclination of the sheet member S.

FIG. 5 is a view showing the joining device 1 and the inclined sheet member S. FIG. 5A and 5B, the sheet member S is inclined in the reverse direction.
As illustrated, the distance measuring device 42 approaches the sheet member S or moves away from the sheet member S in accordance with the inclination of the sheet member S. As a result, the distance L between the distance measuring device 42 and the sheet member S changes. The distance L is a value corresponding to the inclination of the sheet member S. The detection means 41 always detects the inclination of the sheet member S by measuring the distance L by the distance measuring device 42 in front of the moving direction T of the joining member 10.

  The control device 7 controls the changing device 20 based on the inclination detection result by the detecting means 41. The control device 7 causes the changing device 20 to change the biting position 15 of the pair of joining members 10 according to the inclination of the sheet member S. Further, the control device 7 changes the biting position 15 in accordance with the positions of the end portions S1 and S2 of the sheet member S. At that time, the control device 7 controls the changing device 20 based on the distance L measured by the distance measuring device 42.

  The control device 7 compares the measurement distance L with the reference distance. For example, the reference distance is the distance L between the distance measuring device 42 and the sheet member S when the sheet member S is not inclined. The reference distance is set in the control device 7 in advance. The control device 7 controls the changing device 20 so that the biting position 15 of the pair of joining members 10 is positioned on the end portions S1 and S2 of the sheet member S based on the distance comparison result. Further, the control device 7 determines a position (change position) for changing the biting position 15 from the difference between the measurement distance L and the reference distance. The control device 7 determines the inclination of the sheet member S from the measurement distance L, and causes the change device 20 to change the biting position 15 to the change position. The control device 7 causes the biting position 15 to follow the inclination of the sheet member S by the above means. When the inclination of the sheet member S is upward (see FIG. 5A), the measurement distance L is shortened, and the biting position 15 is changed to the front side in the movement direction T. When the inclination of the sheet member S is downward (see FIG. 5B), the measurement distance L is increased, and the biting position 15 is changed to the rear side in the movement direction T.

  Thus, the position adjustment means 40 controls the changing device 20 in conjunction with the detection result of the detection means 41 (measurement result of the distance measurement device 42). The position adjusting means 40 adjusts the biting position 15 of the pair of joining members 10 by the changing device 20 in response to the inclination of the sheet member S. The position adjusting means 40 adjusts the biting position 15 on the ends S1 and S2 of the sheet member S. During the joining of the sheet member S, the position adjusting means 40 adjusts the biting position 15 in response to the inclination of the sheet member S and the change of the inclination.

  The biting position 15 is changed by the position adjusting means 40 onto the end portions S1 and S2 so as to always contact the end portions S1 and S2. As a result, the sheet member S is joined at the optimum position of the pair of joining members 10. The sheet member S is joined in the same manner as the flat portion (see FIG. 1) at the inclined portion (see the up portion in FIG. 5A and the down portion in FIG. 5B). The joining apparatus 1 always joins the sheet member S under the optimum conditions by the pair of joining members 10 corresponding to all the inclination conditions of the sheet member S.

Next, operation | movement of the joining apparatus 1 is demonstrated. Moreover, the joining method of the sheet member S and the manufacturing method of the joined sheet member S are demonstrated.
First, the sheet member S is wound around the outer periphery of the forming drum 4, and the sheet member S is disposed on the forming drum 4. The end portions S <b> 1 and S <b> 2 of the sheet member S are arranged so as to be parallel to the moving direction T and are abutted on the forming drum 4. At that time, the end surfaces (joint surfaces) of the end portions S1 and S2 are abutted while being arranged in a predetermined direction according to the light beam of the projector, for example. When the joining apparatus 1 is instructed to start joining, the forming drum 4 rotates. When the end portions S1 and S2 of the sheet member S are moved to a position where they are joined by the joining device 1, the rotation of the forming drum 4 is stopped.

  The joining device 1 presses the pair of joining members 10 against the end portions S1 and S2 of the sheet member S by the pressing device 2, and starts joining the end portions S1 and S2. The pair of joining members 10 are moved in the moving direction T by the moving device 3. The moving device 3 moves the pair of joining members 10 along the end portions S1 and S2 from one side edge of the sheet member S to the other side edge. At that time, the pair of joining members 10 are rolled on the end portions S1 and S2 of the sheet member S. The ends S1 and S2 of the sheet member S are joined together by the pair of joining members 10 that roll. The pair of joining members 10 bite the end portions S <b> 1 and S <b> 2 between teeth 13 that mesh with each other at a predetermined biting position 15. The end portions S1 and S2 are engaged and joined between the teeth 13.

  During the joining of the sheet member S, the distance L between the distance measuring device 42 and the sheet member S is measured by the distance measuring device 42 arranged toward the sheet member S. The distance L changes corresponding to the inclination of the sheet member S. The detecting means 41 measures the distance L and detects the inclination of the sheet member S. Further, the change position 20 changes the biting position 15 of the pair of joining members 10 according to the inclination of the sheet member S based on the detection result of the inclination. The position adjusting means 40 adjusts the biting position 15 so as to be positioned on the end portions S1 and S2 of the sheet member S corresponding to the inclination of the sheet member S. The joining device 1 joins the end portions S1 and S2 of the sheet member S with the pair of joining members 10 while always adjusting the biting position 15. The ends S1 and S2 are joined together to complete the joining. Thereby, the joined sheet member S is manufactured.

  As described above, in the present embodiment, the biting position 15 of the pair of joining members 10 is adjusted corresponding to the inclination of the sheet member S. Therefore, the end portions S1 and S2 of the sheet member S can be joined with high accuracy. Moreover, since the fluctuation | variation of the joining precision of the sheet | seat member S can be suppressed, edge part S1, S2 can be joined uniformly. By automatically adjusting the biting position 15, the operator's skill becomes unnecessary. Since the joining quality can be reduced by automating the joining work, the quality of the sheet member S can be improved. Since it is not necessary for a person to work with the joining device 1, the burden on the operator can be reduced. Productivity at the time of joining the sheet member S can also be improved.

  Since the pair of joining members 10 are pressed against the end portions S1 and S2 of the sheet member S, it is not necessary to press the end portions S1 and S2 after joining. The pair of joining members 10 can join the end portions S1 and S2 reliably and firmly. The joining strength of the end portions S1 and S2 is increased, and the quality of joining is stabilized. Even when the sheet member S is thick (for example, 10 mm or more), the end portions S1 and S2 can be joined with sufficient strength. By adopting the worm gear 33, the structure of the changing device 20 and the tilting device 30 is simplified. Thereby, the joining apparatus 1 can also be made small. By measuring the distance L with the distance measuring device 42, the inclination of the sheet member S can be detected easily and accurately.

  The distance measuring device 42 may be connected to the holding member 21 and tilted together with the pair of joining members 10. In this case, the control device 7 compares the measurement distance L measured by the distance measurement device 42 with the reference distance. When the measurement distance L is different from the reference distance, the change device 20 changes the biting position 15 of the pair of joining members 10. Corresponding to the change of the biting position 15, the position of the distance measuring device 42 is changed. The biting position 15 is changed until the measurement distance L measured by the distance measuring device 42 matches the reference distance. The biting position 15 is changed by changing the biting position 15 so that the measurement distance L always matches the reference distance.

  A position (vertex) at which the teeth 13 of the pair of joining members 10 are most engaged with each other is defined as 0 °. In the pair of joining members 10, portions from 0 ° to 15 ° toward the rear in the movement direction T are portions (optimal portions) where the sheet member S can be joined most favorably. It is desirable that the sheet member S is joined at an optimum portion of at least the pair of joining members 10.

  In this embodiment, the example which joins the sheet | seat member S on the forming drum 4 was demonstrated. On the other hand, the sheet | seat member S can be joined also on support bodies other than the forming drum 4 by using the joining apparatus 1. FIG. For example, the sheet | seat member S arrange | positioned to the planar support member and the conveyor can be joined by the joining apparatus 1.

  DESCRIPTION OF SYMBOLS 1 ... Joining device, 2 ... Pushing device, 3 ... Moving device, 3A ... Guide rail, 3B ... Moving member, 4 ... Forming drum, 5 ... Connecting member, 6 ... arm, 7 ..., control device, 10 ... joining member, 11 ... center axis, 12 ... support member, 13 ... teeth, 14 ... projection, 15 ... Biting position, 20 ... change device, 21 ... holding member, 22, 23 ... support shaft, 30 ... tilting device, 31 ... motor, 32 ... rotating shaft, 33 ... .... Worm gear, 33A ... Worm, 33B ... Worm wheel, 40 ... Position adjustment means, 41 ... Detection means, 42 ... Distance measuring device, S ... Sheet member, S1, S2 ... End, T ... Moving method.

Claims (5)

A sheet member joining device that is disposed above the end portions of the sheet member and joins the end portions of the sheet members,
A pair of joining members that roll on the end portions of the sheet member and engage and join the end portions of the sheet member between teeth meshing with each other at a predetermined engagement position;
A moving device that moves the pair of joining members along the end of the sheet member;
A changing device for changing the biting position of the pair of joining members;
Corresponding to the inclination of the sheet member, the position adjustment means for adjusting the biting position of the pair of joining members on the end of the sheet member by the changing device,
The pair of joining members are tilted in the opposite direction with respect to the upper side so that the axis of each other intersects at the center plane between the pair of joining members in a state where the biting position is located on the end of the sheet member ,
The position adjusting means detects the inclination of the sheet member, and controls to change the engagement position of the pair of joining members according to the inclination of the sheet member based on the detection result of the detection means. A sheet member joining apparatus having the apparatus. In the joining apparatus of the sheet | seat member described in Claim 1,
The detection means is disposed toward the sheet member, and has a distance measuring device that measures a distance between the sheet member that changes in accordance with the inclination of the sheet member,
An apparatus for joining sheet members, in which the control device controls the changing device based on a distance measured by the distance measuring device. In the joining apparatus of the sheet | seat member described in Claim 1 or 2,
Change device, joining device for a seat member for chromatic and holding member for holding the pair of joint members and a tilting device for tilting the holding member. A sheet member manufacturing method for manufacturing the joined sheet member by joining the end portions of the sheet member by a pair of joining members of a joining device for the sheet member disposed above the end of the sheet member,
The sheet member joining apparatus rolls on the end portion of the sheet member and engages and joins the end portions of the sheet member between teeth meshing with each other at a predetermined engagement position, and the engagement position is the sheet member. A pair of joining members that are tilted in the opposite direction with respect to the upper side so that the axis of each other intersects at the center plane between the pair of joining members.
The pair of joining members are moved along the end portions of the sheet member, the pair of joining members are rolled on the end portions of the sheet member, and the end portions of the sheet members are engaged with each other by a predetermined engagement of the pair of joining members. Biting and joining between teeth that mesh with each other in position;
A position adjusting step for adjusting the biting position of the pair of joining members on the end portion of the sheet member by changing the biting position of the pair of joining members by a changing device corresponding to the inclination of the sheet member. And
The position adjustment step detects the inclination of the sheet member by the detection means, and the change device is controlled by the control device based on the detection result of the detection means in the detection step, and the biting position of the pair of joining members is determined. The manufacturing method of a sheet | seat member which has a process changed according to the inclination of a sheet | seat member. Te manufacturing method smell of the sheet member according to claim 4,
A method for manufacturing a sheet member, wherein the detecting step includes a step of measuring a distance between the distance measuring device and the sheet member, which changes corresponding to the inclination of the sheet member, by a distance measuring device arranged toward the sheet member.

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