Guide rail positioning device

Abstract

To provide a guide rail position adjustment device capable of easily positioning a guide rail and a batten without executing additional machining.SOLUTION: The position adjustment device for fitting a batten which serves as a joint to another guide rail to a guide rail of an elevator comprises: a conveyance unit that moves the guide rail from an upstream side to a downstream side in a longitudinal direction; and a first position adjustment unit disposed on the downstream side of the conveyance unit and brought into contact with downstream one end of the guide rail moving from the conveyance unit in the longitudinal direction so as to adjust a position of the guide rail in the longitudinal direction to a longitudinal fitting position. The longitudinal fitting position is a position in the longitudinal direction corresponding to the batten disposed at a batten fitting position for fitting the batten to the guide rail.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present disclosure relates to a position adjusting device for a guide rail.

Background Art

[0002] Generally, a joint plate that serves as a joint between an elevator guide rail and another guide rail is manually attached using a jig or the like. Patent Document 1 discloses such a guide rail and a joint plate. The guide rail and the joint plate are subjected to fitting processing. The joint plate can be accurately attached by an operator to a position where the alignment of the guide rail is easily performed.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, additional cutting or the like needs to be performed on the guide rail and the joint plate described in Patent Document 1. Further, the guide rail and the joint plate are attached manually. Therefore, it is necessary to assign an operator to the process of attaching the guide rail and the joint plate.

[0005] The present disclosure has been made to solve the above problems. An object of the present disclosure is to provide a position adjusting device that can easily position a guide rail and a joint plate without performing additional processing.

Means for Solving the Problems

[0006] The position adjustment device according to this disclosure is a device for attaching a joint plate to a guide rail of an elevator, which serves as a joint between another guide rail, and comprises: a transport unit that moves the guide rail from the upstream side to the downstream side along the longitudinal direction; and a first position adjustment unit that is located downstream of the transport unit and contacts one downstream end of the guide rail in the longitudinal direction as it moves from the transport unit, thereby adjusting the position of the guide rail in the longitudinal direction to the longitudinal mounting position. The longitudinal mounting position is the position in the longitudinal direction corresponding to the joint plate that is located at the joint plate mounting position for attaching the joint plate to the guide rail. [Effects of the Invention]

[0007] According to this disclosure, the position adjustment device adjusts the position of the guide rail to a longitudinal mounting position corresponding to the sheave plate placed at the sheave plate mounting position. Therefore, the positioning of the guide rail and the sheave plate can be easily performed without any additional processing. [Brief explanation of the drawing]

[0008] [Figure 1] This diagram shows an overview of the transport system in Embodiment 1. [Figure 2] This is a side view showing an overview of the position adjustment device in Embodiment 1. [Figure 3] This is a perspective view showing an overview of the main parts of the position adjustment device in Embodiment 1. [Figure 4] This is a side view of the first frame of the position adjustment device in Embodiment 1, viewed from the upstream side to the downstream side. [Figure 5] This is a top view of the main part of the downstream transport section of the position adjustment device in Embodiment 1. [Figure 6] This is a perspective view showing the main parts of the mounting device for the transport system in Embodiment 1. [Figure 7] This is a side view showing an overview of the position adjustment device in Embodiment 1. [Figure 8] This is a side view showing an overview of the position adjustment device in Embodiment 1. [Figure 9] This is a side view showing an overview of the position adjustment device in Embodiment 1. [Figure 10] This is a side view showing an overview of the position adjustment device in Embodiment 1. [Figure 11] This is a side view showing an overview of the position adjustment device in Embodiment 1. [Figure 12] This is a side view showing an overview of the position adjustment device in Embodiment 1. [Figure 13] This is a side view showing an overview of the position adjustment device in Embodiment 1. [Modes for carrying out the invention]

[0009] The embodiments for implementing this disclosure will be described with reference to the attached drawings. In each drawing, the same or corresponding parts are denoted by the same reference numerals. The explanation of such parts will be simplified or omitted as appropriate.

[0010] Embodiment 1. Figure 1 is a diagram showing an overview of the transport system in Embodiment 1.

[0011] The transport system 1000 shown in Figure 1 is equipment for transporting guide rails G and cover plates P attached to guide rails G. Generally, when guide rails G are installed, one guide rail G and another guide rail G are connected by cover plates P at their joints. At this time, a alignment process is required in which the positions of one guide rail G and another guide rail G are precisely adjusted so that their longitudinal directions are aligned.

[0012] For example, the conveying system 1000 is installed in the production factory or shipping factory of the guide rail G. For example, the conveying system 1000 includes an upstream conveying line 100, a downstream conveying line 200, and an attachment device 300. The upstream conveying line 100, the downstream conveying line 200, and the attachment device 300 may be provided so that their relative positions do not change. Further, the conveying system 1000 may further include a control device 400. The guide rail G is conveyed in the direction of arrow D from the upstream conveying line 100 on the upstream side to the downstream conveying line 200 on the downstream side. The guide rail G is conveyed such that its head faces upward and the back surface of the bottom, which is the part opposite to the head, faces downward.

[0013] The upstream conveying line 100 is movable in the longitudinal direction of the guide rail G. The downstream conveying line 200 is located on the downstream side of the upstream conveying line 100. The downstream conveying line 200 is movable in the longitudinal direction of the guide rail G to which the eye plate P is attached.

[0014] The attachment device 300 arranges the eye plate P between the upstream conveying line 100 and the downstream conveying line 200 and attaches it to the guide rail G. The attachment device 300 includes an arranging device 300a and a connecting device 300b.

[0015] As a positioning operation of the eye plate P, the arranging device 300a moves the eye plate P from the eye plate storage place and arranges it at the eye plate attachment position. The eye plate attachment position is set at a position between the upstream conveying line 100 and the downstream conveying line 200. The eye plate attachment position is a position below the area where the guide rail G is conveyed. For example, the arranging device 300a is provided with an articulated robot arm. The eye plate P is arranged at the eye plate attachment position by the articulated robot arm. Note that any robot such as a linear robot may be applied to the arranging device 300a as long as the eye plate P is accurately arranged at the eye plate attachment position and the position of the eye plate P is regulated during attachment, instead of the articulated robot arm.

[0016] The connecting device 300b connects the eyelet plate P arranged at the eyelet plate mounting position and the guide rail G arranged at the mounting position corresponding to the eyelet plate mounting position. Specifically, for example, the connecting device 300b connects the eyelet plate P and one end of the guide rail G with bolts and nuts which are connecting tools. One end of the guide rail G is the downstream end in the longitudinal direction of the guide rail G when the guide rail G is conveyed. In addition, the connecting device 300b may include a mechanism for supplying connecting tools for connecting the eyelet plate P and the guide rail G.

[0017] The conveying system 1000 includes a position adjusting device 1. The position adjusting device 1 at least includes a part of the downstream devices of the upstream conveying line 100 and a part of the upstream devices of the downstream conveying line 200. The position of the guide rail G is adjusted by the position adjusting device 1 to be at the mounting position.

[0018] The control device 400 can overall control the operations of each device included in the conveying system 1000. For example, the control device 400 may store program information for the mounting operation and the conveying operation. The control device 400 may control the conveying system 1000 so that the operations of the mounting process of the eyelet plate P and the conveying process of the guide rail G are automatically performed by executing the program with a processor. In addition, the control device 400 may include an input terminal for receiving an operation from a person. The operator may cause the control device 400 to perform the control operation of the conveying system 1000 by operating the input terminal.

[0019] Next, the position adjusting device 1 will be described with reference to FIGS. 2 and 3. FIG. 2 is a side view showing an overview of the position adjusting device in Embodiment 1. FIG. 3 is a perspective view showing an overview of the main part of the position adjusting device in Embodiment 1.

[0020] Figure 2 shows the position adjustment device 1 when the guide rail G is adjusted to its mounting position and the cover plate P is positioned at the cover plate mounting position. The position adjustment device 1 comprises a first frame 2, which is a downstream frame, and a second frame 3, which is an upstream frame. For example, the first frame 2 is part of the upstream side of the downstream conveyor line 200. For example, the second frame 3 is part of the downstream side of the upstream conveyor line 100.

[0021] The first frame 2 comprises a first base 4, a first position adjustment unit 5, and a downstream transport unit 6.

[0022] The first base 4 constitutes the framework of the first frame 2. Various components of the first frame 2 are attached to the first base 4. For example, the first base 4 is a platform constructed from square pipes. In this case, the first base 4 includes legs and an upper section. The upper section is supported by the legs.

[0023] The first position adjustment unit 5 is provided at the upstream end of the first base 4. A portion of the first position adjustment unit 5 extends from the first base 4 toward the second frame 3. The first position adjustment unit 5 stops the guide rail G as it moves from the upstream transport line 100 toward the first frame 2 by contacting one end of the guide rail G. When stopping the guide rail G, the first position adjustment unit 5 adjusts the position of the guide rail G to the longitudinal mounting position, which is the mounting position in the longitudinal direction. The first position adjustment unit 5 can take at least two forms: a form that stops the guide rail G and a form that allows the guide rail G to pass toward the downstream side.

[0024] The downstream transport section 6 is provided on the upper part of the first base section 4. The downstream transport section 6 moves the guide rail G, to which the cover plate P is attached, downstream of the first position adjustment section 5. At this time, the downstream transport section 6 moves the guide rail G along its longitudinal direction while supporting the guide rail G with support parts so as not to come into contact with the cover plate P. The downstream transport section 6 is provided with a contact area and a non-contact area. The contact area is the area of ​​the downstream transport section 6 that supports the guide rail G. The support parts correspond to the contact area. For example, the downstream transport section 6 has a plurality of slats 61 as support parts that are in the contact area. The non-contact area is the area of ​​the downstream transport section 6 in which the cover plate P is located inside when the guide rail G is moved.

[0025] The second frame 3 comprises a second base 7, a transport section 8, a second position adjustment section 9, and an intermediate support section 10.

[0026] The second base 7 constitutes the framework of the second frame 3. The various components of the second frame 3 are attached to the second base 7. For example, the second base 7 is a platform constructed from square pipes. In this case, the second base 7 includes legs and an upper section. The upper section is supported by the legs.

[0027] The transport unit 8 is provided on the upper part of the second base unit 7. For example, the transport unit 8 consists of multiple motor rollers. The transport unit 8 supports the guide rail G and moves it along its longitudinal direction from upstream to downstream. Specifically, the transport unit 8 moves the guide rail G to the first frame unit 2. The transport unit 8 can stop the guide rail G at any position.

[0028] The second position adjustment unit 9 is provided on the upper side of the second base unit 7. The second position adjustment unit 9 adjusts the position of the guide rail G to the width mounting position, which is the mounting position in the width direction. The width direction is the direction perpendicular to the longitudinal direction of the guide rail G and parallel to the back surface to which the bottom plate P of the bottom G1 is attached. The second position adjustment unit 9 adjusts the position of the guide rail G by applying force in the width direction to the guide rail G. For example, the second position adjustment unit 9 is an air chuck having a pair of claws. In this case, the air chuck is positioned above the conveying unit 8. The air chuck adjusts the position of the guide rail G to the width mounting position by gripping two surfaces G3 of the head G2 of the guide rail G with the pair of claws.

[0029] The intermediate support section 10 is provided on the upper side of the second base section 7 so as to be movable in the direction in which the guide rail G is transported. The intermediate support section 10 comprises a movable section 11 and a support body 12.

[0030] The movable part 11 supports the load of the support 12. The movable part 11 moves the support 12. Specifically, the movable part 11 has a beam 13 and a drive mechanism 14. For example, the beam 13 is rod-shaped. The beam 13 is movably positioned on the upper part of the second base 7 such that its longitudinal direction faces the direction in which the guide rail G is transported. The drive mechanism 14 is positioned on the upper part of the second base 7. The drive mechanism 14 moves the beam 13 to any position in the longitudinal direction.

[0031] The support 12 is fixed to the upper side of the beam 13 at the downstream end of the beam 13. When a guide rail G exists between the first frame 2 and the second frame 3, the support 12 is in contact with the guide rail G in a manner that allows it to move relative to the guide rail G. For example, the support 12 is a free roller that does not have a drive function. Note that the support 12 is not limited to a free roller; it may be a ball caster or the like, as long as it can be in contact with the guide rail G in a manner that allows it to move relative to the guide rail G. The support 12 can support the guide rail G together with the beam 13 in a manner that allows it to move. As shown in Figure 2, when the cover plate P is attached, the support 12 is in a first position that does not interfere with the cover plate P. The first position is the position on the side of the second frame 3 that is closer to the cover plate P when the cover plate P is attached. In this case, the distance from the transport section 8 to the first position is shorter than the distance from the downstream transport section 6 to the first position.

[0032] The placement device 300a includes a placement section 301a. The placement section 301a transports the cover plate P to the cover plate mounting position while supporting it from below. For example, the placement section 301a is part of a robot arm. The cover plate mounting position is located between the first frame 2 and the second frame 3, and is below the area in which the guide rail G moves.

[0033] The first position adjustment unit 5 includes a contact portion 51 and an avoidance portion 52. The contact portion 51 stops the guide rail G at its longitudinal mounting position by contacting one end of the guide rail G that has moved from the second frame 3. The avoidance portion 52 moves the position of the contact portion 51 to either the contact position or the avoidance position. The contact position is the position in which the contact portion 51 can contact the guide rail G. In the first position adjustment unit 5, the configuration in which the contact portion 51 is in the contact position is the configuration in which the guide rail G is stopped. The avoidance position is the position in which the contact portion 51 does not contact or interfere with the guide rail G when the guide rail G moves from the upstream side to the downstream side. In the first position adjustment unit 5, the configuration in which the contact portion 51 is in the avoidance position is the configuration in which the guide rail G can pass toward the downstream side. Note that the avoidance portion 52 may be configured to move the contact portion 51 to a position other than the contact position and the avoidance position, as long as the contact portion 51 can be moved to at least two positions, the contact position and the avoidance position.

[0034] Figure 2 shows an example of the specific configuration of the first position adjustment unit 5. In this example, the avoidance unit 52 has a stopper shaft 53, a bush 54, and an air cylinder 55 as a lifting mechanism. The stopper shaft 53 is rod-shaped. The stopper shaft 53 is fixed to the first base 4 so as to extend upward from the first base 4. The bush 54 surrounds the stopper shaft 53 so as to be coaxial with the stopper shaft 53. The bush 54 slides relative to the stopper shaft 53. That is, the bush 54 is movable along the stopper shaft 53. The air cylinder 55 is fixed to the upper part of the stopper shaft 53.

[0035] In this example, the contact portion 51 includes a linear guide 56, a stopper 57, and a buffer 58.

[0036] The linear guide 56 includes a fixed body 56a and a sliding body 56b. The fixed body 56a is fixed to a bush 54. The fixed body 56a is movable along the stopper shaft 53 together with the bush 54. The sliding body 56b is located on the opposite side of the fixed body 56a from the bush 54. The sliding body 56b slides relative to the fixed body 56a. Therefore, the sliding body 56b is supported from above by the fixed body 56a and is movable along the longitudinal direction of the guide rail G relative to the fixed body 56a.

[0037] The stopper 57 is fixed to the sliding body 56b. The stopper 57 is movable along the longitudinal direction of the guide rail G together with the sliding body 56b. The stopper 57 extends horizontally from the sliding body 56b toward the second frame 3. When the contact portion 51 is in the contact position, the stopper 57 is positioned at the same height as the bottom G1 of the guide rail G which rests on the second frame 3. At this time, the lower surface of the stopper 57, which is the side of the cover plate mounting position, is not positioned below the bottom surface of the bottom G1. Therefore, the lower surface of the stopper 57 is at a height that does not interfere with the cover plate P positioned at the cover plate mounting position.

[0038] For example, the buffer 58 is a cylinder-type shock absorber. The buffer 58 is fixed to the surface of the stopper 57 that is attached to the linear guide 56. In this case, the buffer 58 is fixed to the upper surface of the stopper 57, which is the surface opposite to the lower surface of the stopper 57. When the stopper 57 moves downstream, the buffer 58 moves together with the stopper 57. Then, the buffer 58 decelerates the stopper 57 by coming into contact with the fixed body 56a of the linear guide 56. After that, the buffer 58 stops the stopper 57 at the stopping position. This stopping position corresponds to the longitudinal mounting position of the guide rail G.

[0039] The shock absorber, which is the buffer body 58, has a cylinder 58a, a shaft 58b, and an impact body 58c. The cylinder 58a is arranged coaxially with the longitudinal direction of the guide rail G. The shaft 58b is arranged coaxially with the cylinder 58a inside the cylinder 58a. The shaft 58b is positioned downstream of the cylinder 58a and in a position where it can collide with the stationary body 56a. The impact body 58c is provided at the downstream end of the shaft 58b. That is, the impact body 58c is provided at the end of the shaft 58b on the linear guide 56 side.

[0040] As the shaft 58b moves inside the cylinder 58a, the cylinder 58a absorbs longitudinal impact from the shaft 58b. When the shaft 58b is fully retracted into the cylinder 58a while the impactor 58c is in contact with the stationary body 56a, the shaft 58b stops relative to the cylinder 58a. At this time, the stopper 57 is stopped at its stopping position. That is, the position where the shaft 58b is fully retracted into the cylinder 58a and stops corresponds to the stopping position of the stopper 57. This position of the stopper 57 corresponds to the longitudinal mounting position of the guide rail G.

[0041] The first position adjustment unit 5 further includes an adjustment detector 59. The adjustment detector 59 detects when the stopper 57 has stopped. When the stopper 57 has stopped, it means that the position of the guide rail G has been adjusted to the longitudinal mounting position. In other words, the adjustment detector 59 detects that the operation of adjusting the position of the guide rail G to the longitudinal mounting position has been completed. In this example, the adjustment detector 59 is a photosensor. However, the adjustment detector 59 is not limited to a photosensor and may be a proximity sensor, a position detection switch, etc., as long as it can detect when the stopper 57 has stopped.

[0042] Next, the first position adjustment unit 5 will be further explained using Figure 3. Note that some equipment, such as the adjustment detector 59, is not shown in Figure 3.

[0043] As shown in Figure 3, the stopper shafts 53 and bushings 54 each come in pairs. The pair of stopper shafts 53 are positioned on either side of the area through which the guide rail G passes. The pair of bushings 54 are mounted coaxially to the pair of stopper shafts 53. The air cylinder 55 is fixed to a plate connecting the upper ends of the pair of stopper shafts 53. The air cylinder 55 has an operating shaft 55a that is movable in the axial direction of the stopper shafts 53. The fixed body 56a of the linear guide 56 extends from one bushing 54 to the other. The lower end of the operating shaft 55a of the air cylinder 55 is fixed to the fixed body 56a.

[0044] The air cylinder 55 moves the operating shaft 55a up and down, thereby moving the stationary body 56a up and down along the pair of stopper shafts 53. As the stationary body 56a moves, the contact portion 51, including the stopper 57 and the buffer 58, moves to a contact position or an avoidance position. In this example, the avoidance position is a position above the contact position, i.e., a position above the area through which the guide rail G passes.

[0045] Furthermore, as shown in Figure 3, the guide rail G is provided with multiple mounting holes G4, an end face G5, and a projection G6. The multiple mounting holes G4 are holes that penetrate from the side of the head G2 to the back surface at the bottom G1. The end face G5 is the surface facing downstream at one downstream end of the guide rail G. When the guide rail G is installed, it comes into contact with another guide rail G at the end face G5. The projection G6 is provided on the end face G5. Although not shown, a groove corresponding to the projection G6 is provided at the other end of the guide rail G opposite to the one end. When the guide rail G is installed, the projection G6 fits into the groove at the other end of the other guide rail G. That is, the projection G6 is used when aligning one guide rail G with another guide rail G. For example, the projection G6 is provided in a straight line from the bottom G1 side to the head G2 side at the end face G5.

[0046] The stopper 57 contacts the guide rail G at the contact end 57a on the side of the second frame 3. The contact end 57a has a groove in its center to correspond to the protruding body G6. The contact end 57a has a first end 57b and a second end 57c at the ends of the groove. The first end 57b and the second end 57c are separated by a specified groove distance in the width direction. The groove distance is at least longer than the width direction length of the protruding body G6 of the guide rail G. Furthermore, the groove distance may be longer than the distance between two faces G3 at the head G2 of the guide rail G. The distance between two faces G3 is the distance between the furthest faces of the guide rail G in the width direction. If the groove distance is longer than the distance between two faces G3, the possibility of the contact end 57a contacting a location other than the end face G5 of the guide rail G when it moves in the vertical direction is reduced.

[0047] As the guide rail G moves downstream towards the first frame 2, the stopper 57, located at the contact point, contacts the bottom G1 of the guide rail G at the first end 57b and second end 57c of the contact end 57a. At this time, because a groove is provided, the contact end 57a does not come into contact with the protruding body G6. Subsequently, due to the downstream momentum of the guide rail G, the stopper 57 moves downstream while remaining in contact with the guide rail G. The buffer body 58, supported by the fixed body 56a, absorbs the momentum of the guide rail G, decelerating both the guide rail G and the stopper 57. At this time, the cylinder 58a of the buffer body 58 absorbs the longitudinal impact on the guide rail G from the shaft 58b moving inside. When the movement of the shaft 58b relative to the cylinder 58a stops, the guide rail G stops at the longitudinal mounting position. That is, the position of the guide rail G is adjusted to the longitudinal mounting position.

[0048] Before the guide rail G comes to a stop, the first position adjustment unit 5 experiences an impact caused by the movement of the guide rail G. Each component of the first position adjustment unit 5 is designed to have sufficient strength to withstand this impact. Specifically, the thickness and material of the stopper 57 are designed to prevent deformation due to the impact. The shock absorption capacity of the buffer 58 is designed to withstand the impact. The diameter, material, and fixing members of the pair of stopper shafts 53 are designed to withstand the impact. Furthermore, by providing the pair of stopper shafts 53 on both sides of the area through which the guide rail G passes, resistance to the impact is improved, and the accuracy of position adjustment is enhanced.

[0049] Next, the downstream transport section 6 will be explained using Figures 4 and 5. Figure 4 is a side view of the first frame of the position adjustment device in Embodiment 1, viewed from the upstream side to the downstream side. Figure 5 is a top view of the main part of the downstream transport section of the position adjustment device in Embodiment 1. Note that the first position adjustment section 5 is not shown in Figure 4.

[0050] As shown in Figure 4, the downstream conveying section 6 is, for example, a chain conveyor that conveys the guide rail G by slats 61 which are support parts. The downstream conveying section 6 further includes a drive unit 60. The downstream conveying section 6 moves the support parts downstream by the drive unit 60. In this example, the drive unit 60 includes a pair of brackets 62, a pair of bearings 63, a conveyor shaft 64, a pair of sprockets 65, and a pair of chain belts 66.

[0051] Each of the pair of brackets 62 is fixed to the legs of the first base 4. The pair of brackets 62 are located on the left and right sides of the first base 4 when viewed from the downstream side. The pair of bearings 63 are fixed to the pair of brackets 62, respectively. The axis of the conveyor shaft 64 is oriented in the left-right direction when viewed from the downstream side. The conveyor shaft 64 is rotatably supported about its axis by each of the pair of bearings 63. Each of the pair of sprockets 65 is fixed to the conveyor shaft 64. The pair of sprockets 65 are rotatable in sync with the conveyor shaft 64.

[0052] Each of the pair of chain belts 66 is manufactured in a chain shape. Each of the pair of chain belts 66 is manufactured in an endless shape. One end of the pair of chain belts 66 is wrapped around one of the pair of sprockets 65. The other end of the pair of chain belts 66 is wrapped around the other of the pair of sprockets 65. Although not shown, each of the pair of chain belts 66 is stretched to the opposite end of the first frame 2. The left and right ends of the slats 61 are attached to the pair of chain belts 66, respectively.

[0053] A pair of sprockets 65 rotate due to a driving force generated by a drive device (not shown). The conveyor shaft 64 causes the pair of sprockets 65 to rotate synchronously with each other. Each of the pair of chain belts 66 moves in accordance with the rotation of the pair of sprockets 65. As the pair of chain belts 66 move, the multiple slats 61 circulate along the upper part of the first base 4, from upstream to downstream, together with the chain belts 66. During this process, guide rails G are placed on the upper slats 61. Although not shown, the cover plate P and guide rails G move above the conveyor shaft 64. In particular, the cover plate P moves in an area below the upper surface of the upper slats 61 and above the conveyor shaft 64.

[0054] Each component of the downstream conveying section 6 is designed to have sufficient strength to prevent deformation under the weight of the cover plate P and the guide rail G. The thickness and material of the slats 61 are designed to prevent deformation when the guide rail G with the cover plate P attached is placed on it. The thickness, material, and mounting strength of the brackets 62 to the first base 4 are designed to prevent deformation even when the load of the downstream conveying section 6 with the cover plate P attached on the guide rail G is received from the bearings 63. The thickness and material of the bearings 63 and the conveyor shaft 64 are designed to prevent deformation even when subjected to the load of the guide rail G with the cover plate P attached, the multiple slats 61, the pair of chain belts 66, and the pair of sprockets.

[0055] As shown in Figure 5, a space E is formed between the multiple slats 61. This space E is the non-contact region in this example. The upper slat 61 is the contact region in this example. The non-contact region and the contact region move along the upstream-to-downstream direction while maintaining their relative positions to each other.

[0056] Although not shown in the diagram, when the guide rail G is moved from the upstream side to the downstream side, the cover plate P moves while positioned inside the non-contact area space E. The contact area slat 61 moves from the upstream side to the downstream side while supporting the guide rail G in a position where it does not contact the cover plate P, due to the force received from the chain belt 66.

[0057] Next, the mounting device 300 will be explained using Figure 6. Figure 6 is a perspective view showing the main parts of the mounting device for the transport system in Embodiment 1.

[0058] As shown in Figure 6, the cover plate P is provided with multiple connecting holes P1. The connecting holes P1 are located at positions corresponding to the mounting holes G4 of the guide rail G.

[0059] The coupling device 300b has a coupling part 301b. For example, the coupling part 301b is an electric wrench for tightening bolts and nuts, which are the couplings. After the position of the guide rail G is adjusted to the mounting position by the first position adjustment part 5 and the second position adjustment part 9, and the cover plate P is positioned at the cover plate mounting position, the coupling part 301b inserts the bolt B into the mounting hole G4 and the coupling hole P1. Then the coupling part 301b tightens the nut onto the bolt B. The coupling device 300b attaches the cover plate P to the guide rail G by performing this operation for each of the multiple mounting holes G4 and multiple coupling holes P1.

[0060] Next, we will explain the flow of operations performed by the transport system 1000 using Figures 7 to 13. Figures 7 to 13 are side views showing an overview of the position adjustment device in Embodiment 1.

[0061] Figure 7 shows the initial state of the position adjustment device 1. One end of the guide rail G is located upstream of the second frame 3. In the initial state, the contact portion 51 is in the avoidance position. The stopper 57 is located upstream of the stopping position. The impact body 58c of the buffer body 58 is not in contact with the linear guide 56. In the air chuck of the second position adjustment unit 9, the pair of claws are open. The slat 61 of the downstream transport unit 6 is in the initial position. The support body 12 is in the first position as its initial position.

[0062] Subsequently, as shown in Figure 8, the transport unit 8 moves the guide rail G to the downstream side of the second frame 3. At this time, the head G2 of the guide rail G passes between a pair of claws that are in the open position.

[0063] Subsequently, as shown in Figure 9, the avoidance unit 52 moves from the avoidance position to the contact position by lowering the contact unit 51. When the contact unit 51 is lowered, the second position adjustment unit 9 pre-adjusts the widthwise position of the guide rail G. Specifically, the pair of claws of the air chuck grip the head G2 by closing, and then open again.

[0064] Furthermore, the preliminary adjustment may be performed at a timing different from the lowering of the contact portion 51. Also, the contact portion 51 may be moved simultaneously with or before the operation shown in Figure 8. In addition, if the guide rail G does not move significantly in the width direction while being transported by the upstream transport line 100 and the transport section 8, the preliminary adjustment by the second position adjustment unit 9 may not be performed.

[0065] Subsequently, as shown in Figure 10, the transport unit 8 moves the guide rail G toward the first frame 2, which is the downstream side. One end of the guide rail G moves over the intermediate support 10 to the space between the first frame 2 and the second frame 3, and then collides with the stopper 57 of the contact portion 51. After the guide rail G, stopper 57, and buffer 58 all move downstream, the buffer 58 collides with the linear guide 56. The buffer 58 generates a force that reduces the kinetic energy of the guide rail G, causing the guide rail G, stopper 57, and buffer 58 to gradually decelerate and stop at the longitudinal mounting position of the guide rail G. The adjustment detector 59 detects that the position of the guide rail G has been adjusted to the longitudinal mounting position. The transport unit 8 may move the guide rail G downstream until the guide rail G stops at the longitudinal mounting position. In this way, the longitudinal mounting position of the guide rail G is positioned.

[0066] After the position of the guide rail G is adjusted to the longitudinal mounting position, the second position adjustment unit 9 adjusts the widthwise position of the guide rail G to the widthwise mounting position while one end of the guide rail G is in contact with the contact portion 51. Specifically, the air chuck adjusts the widthwise position of the guide rail G by gripping it with the head G2 using a pair of claws. In this way, the widthwise mounting position of the guide rail G is positioned. Thus, the position of the guide rail G is adjusted to the mounting position.

[0067] Subsequently, as shown in Figure 11, the mounting device 300 positions the cover plate P at the cover plate mounting position, and then the cover plate P is attached to the guide rail G. After the cover plate P is attached, the mounting device 300 retracts to another position from between the first frame 2 and the second frame 3.

[0068] Subsequently, as shown in Figure 12, the avoidance unit 52 moves the contact unit 51 from the contact position to the avoidance position by raising the contact unit 51. In other words, the first position adjustment unit 5 is configured to allow the guide rail G to pass downstream.

[0069] Subsequently, as shown in Figure 13, the transport unit 8 moves the guide rail G downstream. At this time, the movable unit 11 moves the support 12 downstream from the first position, following the movement of the guide rail G. Specifically, the drive unit 14 moves the beam 13 downstream. The support 12 moves downstream together with the beam 13. At this time, the support 12 is moved at a speed that does not exceed the speed at which the guide rail G is transported, that is, at a speed that does not come into contact with the cover plate P. The support 12 is moved from the first position to the second position. The second position is closer to the first frame 2 than the first position. The second position is further from the second frame 3 than the first position. In this case, the distance from the second position to the transport unit 8 is longer than the distance from the first position to the transport unit 8. For example, the second position is midway between the first frame 2 and the second frame 3. A portion of the load at one end of the guide rail G and the load on the cover plate P is supported by the support 12. This prevents the guide rail G from rotating due to the load at one end and the cover plate P from falling between the first frame 2 and the second frame 3.

[0070] After the cover plate P passes over the bracket 62, the downstream transport unit 6 begins moving the slat 61. The slat 61 supports the guide rail G in a position where it does not contact the cover plate P, and transports the guide rail G downstream. The transport unit 8 assists the operation of the downstream transport unit 6 by moving the guide rail G downstream. In this case, the transport unit 8 may operate at a speed synchronized with the speed at which the downstream transport unit 6 moves the guide rail G. This reduces the resistance generated between the guide rail G and the transport unit 8.

[0071] Although not shown in the diagram, the guide rail G is then transported to another process by the downstream transport line 200. After the other end of the guide rail G, opposite to one end, passes the position adjustment device 1, the position adjustment device 1 returns to its initial state.

[0072] Furthermore, the downstream transport unit 6 may perform the operation of returning the slats 61 to their initial position after the cover plate P is attached to the guide rail G. Regardless of when this operation is performed, the downstream transport unit 6 can reliably place the cover plate P inside the non-contact area by returning the slats 61 to their initial position each time the guide rail G is transported.

[0073] According to Embodiment 1 described above, the position adjustment device 1 has a transport unit 8 and a first position adjustment unit 5. The first position adjustment unit 5 adjusts the longitudinal position of the guide rail G to the longitudinal mounting position by contacting one end of the guide rail G that has been moved downstream by the transport unit 8. The longitudinal mounting position is the longitudinal position corresponding to the cover plate P which is placed at the cover plate mounting position. The positioning of the guide rail G relative to the cover plate P is performed automatically by the position adjustment device 1. Therefore, the positioning of the guide rail G can be easily performed. In addition, since the longitudinal positioning operation of the guide rail G is performed by the device rather than by human hands to meet the required precision, the guide rail G can be positioned with high precision. Furthermore, there is no need to perform additional processing on the guide rail G and the cover plate P, such as providing grooves for alignment. If such additional processing is performed, the cost and work of processing will increase. Also, in this case, the rigidity of the guide rail G or the cover plate P may decrease. On the other hand, since the positioning is performed by the position adjustment device 1, the need for additional processing is suppressed. Therefore, the positioning of the guide rail G and the cover plate P can be performed without compromising the rigidity of the components, and while keeping costs down.

[0074] According to Embodiment 1 described above, the position adjustment device 1 may further include the following additional components.

[0075] The first position adjustment unit 5 has a contact portion 51 and an avoidance portion 52. The avoidance portion 52 moves the contact portion 51 to either the contact position or the avoidance position. When the contact portion 51 is in the avoidance position, the guide rail G to which the cover plate P is attached can be moved downstream of the first position adjustment unit 5. Therefore, the guide rail G can be easily transported to the next process.

[0076] Furthermore, the avoidance section 52 moves the contact section 51 above the contact position to an avoidance position. In this case, the movement of the contact section 51 can be achieved by a lifting mechanism provided in the avoidance section 52. This lifting mechanism can also serve as a mechanism to support the load of the contact section 51. Therefore, a mechanism to move the contact section 51 to an avoidance position can be easily realized compared to a mechanism to move the contact section 51 horizontally above the contact position.

[0077] Furthermore, the contact portion 51 has a contact end 57a. The contact end 57a has a groove that is wider than the projection G6 formed on the end face G5 of the guide rail G. If the contact end 57a were to come into contact with the projection G6, the guide rail G would stop at a position upstream of the longitudinal mounting position by the amount of the projection G6. In this embodiment, the contact end 57a comes into contact with the end face G5 without coming into contact with the projection G6 due to the groove. Therefore, the accuracy of adjusting the position of the guide rail G can be improved.

[0078] Furthermore, the contact portion 51 includes a stopper 57 and a buffer 58. The stopper 57 contacts one end of the guide rail G. The buffer 58 stops the stopper 57 at a predetermined stopping position. The stopping position corresponds to the longitudinal mounting position of the guide rail G. Therefore, the longitudinal position of the guide rail G can be precisely adjusted to the longitudinal mounting position.

[0079] Furthermore, the stopper 57 is positioned to move downstream after contacting the guide rail G. The buffer 58 stops the stopper 57, which is moving from the upstream side to the downstream side, at the stopping position. At this time, the stopper 57 moves downstream together with the guide rail G while in contact with it. If the guide rail G were to come into contact with the stopper 57, which is fixed at the stopping position, the guide rail G might bounce upstream due to the impact of the collision with the stopper 57 and fail to stop at the longitudinal mounting position. In this embodiment, by stopping the stopper 57, which is moving together with the guide rail G, with the buffer 58, it is possible to suppress the guide rail G from bouncing back due to the impact of the collision. As a result, the longitudinal position of the guide rail G can be precisely adjusted to the longitudinal mounting position.

[0080] Furthermore, the buffer 58 is a shock absorber that absorbs impact via the shaft 58b. Therefore, the buffer 58 can absorb the momentum of the guide rail G as well as the impact generated when stopping the stopper 57 and the guide rail G. The guide rail G stops at its longitudinal mounting position after deceleration. As a result, the longitudinal position of the guide rail G can be precisely adjusted to its longitudinal mounting position.

[0081] The buffer 58 may not be a shock absorber, but a damper with a spring attached to the shaft 58b. In this case, the buffer 58 may have a structure comprising a cylinder 58a, a shaft 58b, and a spring. The spring expands and contracts coaxially with the shaft 58b in its natural length state. The spring absorbs longitudinal shocks from the shaft 58b moving inside the cylinder 58a. The spring stops the shaft 58b at a position where the stopper 57 is in the stopping position. That is, the natural length and elastic constant of the spring are determined such that the position where the force moving the guide rail G downstream balances the restoring force of the spring corresponds to the longitudinal mounting position of the guide rail G. Even in this case, the buffer 58 can absorb the momentum of the moving guide rail G and the shock generated when the stopper 57 stops the guide rail G. As a result, the longitudinal position of the guide rail G can be precisely adjusted to the longitudinal mounting position.

[0082] Furthermore, the position adjustment device 1 further includes a second position adjustment unit 9. The second position adjustment unit 9 adjusts the position of the guide rail G in the width direction to the width mounting position. Therefore, the positioning of the guide rail G in the width direction relative to the cover plate P is performed automatically by the second position adjustment unit 9. As a result, the positioning of the guide rail G can be easily performed. In addition, since the positioning operation of the guide rail G in the width direction is performed by the device rather than by human hands to meet the required precision, the guide rail G can be positioned with high precision. Moreover, there is no need to perform additional processing on the guide rail G and the cover plate P, such as providing grooves for adjusting the mounting position. As a result, the positioning of the guide rail G and the cover plate P can be performed without compromising the rigidity of the members, and while keeping costs down.

[0083] Furthermore, the position adjustment device 1 further includes a downstream transport unit 6. The downstream transport unit 6 transports the guide rail G downstream of the first position adjustment unit 5 while supporting it so as not to come into contact with the cover plate P. Specifically, the downstream transport unit 6 has a support unit and a drive unit 60. Therefore, when transporting the guide rail G to the next process, it is possible to suppress changes in the position of the cover plate P relative to the guide rail G.

[0084] The position adjustment device 1 further comprises a support 12 and a movable part 11. The support 12 movably supports the guide rail G in a first or second position. When the guide rail G, to which the cover plate P is attached, is moved downstream, the movable part 11 moves the support 12 from the first position to the second position. The presence of the support 12 in the second position prevents one end of the guide rail G from falling between the transport unit 8 and the downstream transport unit 6.

[0085] Furthermore, the transport system 1000 does not necessarily have to be installed in the shipping plant; for example, it may be installed in the building where the guide rail G is installed.

[0086] The transport system 1000 does not necessarily include the control device 400. Workers may perform the process of installing the cover plate P and transporting the guide rail G by operating each device of the transport system 1000 as appropriate. Furthermore, the control device 400 does not need to control all of the devices of the transport system 1000. In this case, some of the devices may be operated by workers.

[0087] The position adjustment device 1 may include the entirety of the upstream transport line 100 and the entirety of the downstream transport line 200.

[0088] Furthermore, the first base 4 may be made of a material other than a square pipe, or of a thickness and material not shown in the illustration, as long as it has sufficient strength to not deform when the guide rail G to which the cover plate P is attached, the first position adjustment unit 5, and the downstream transport unit 6 are placed on it.

[0089] Furthermore, the second base 7 may be made of a material other than a square pipe, or of a thickness and material not shown in the figures, as long as it has sufficient strength to not deform when the guide rail G to which the cover plate P is attached, the transport section 8, the second position adjustment section 9, and the intermediate support section 10 are placed on it.

[0090] Furthermore, the transport unit 8 may have a function that allows the guide rail G to be moved upstream after the cover plate P is attached to the guide rail G. The transport unit 8 may also have a function that allows the guide rail G to be moved in the width direction after the cover plate P is attached to the guide rail G.

[0091] Furthermore, the transport unit 8 is not limited to a motor roller, as long as it is configured to move while supporting the guide rail G; for example, it may be a chain conveyor or the like.

[0092] Note that the avoidance section 52 does not have to be configured as shown in this embodiment, as long as it can move the contact section 51. For example, the avoidance section 52 may be an electric cylinder or the like instead of an air cylinder 55. Also, the avoidance position may be shifted from the contact position in the width direction or diagonally.

[0093] Furthermore, two or more buffers 58 may be provided. For example, if the impact of the guide rail G colliding with the stopper 57, that is, the momentum of the guide rail G toward the downstream side, exceeds the impact absorption capacity of the buffer 58, then a number of buffers 58 capable of absorbing the impact may be provided. In this case, the buffers 58 may be arranged so that their respective axes are parallel.

[0094] Furthermore, the downstream transport section 6 is not limited to a chain conveyor system, as long as it has contact and non-contact areas and is capable of transporting the guide rail G to which the cover plate P is attached. For example, a timing belt system may also be used.

[0095] To summarize the above explanation, the possible configurations of the technology relating to this disclosure include the configurations listed below as appendices. (Note 1) A device for attaching a joint plate to an elevator guide rail to connect it to another guide rail, A transport unit that moves the guide rail along its longitudinal direction from the upstream side to the downstream side, A first position adjustment unit is positioned downstream of the transport unit and contacts one downstream end of the guide rail in the longitudinal direction as it moves from the transport unit, thereby adjusting the position of the guide rail in the longitudinal direction to the longitudinal mounting position. Equipped with, The longitudinal mounting position is a position adjustment device that corresponds to the longitudinal position of the cover plate, which is positioned at the cover plate mounting position for attaching the cover plate to the guide rail. (Note 2) The first position adjustment unit is, A contact portion that comes into contact with the guide rail at the contact position when the guide rail moves, An avoidance unit that moves the contact portion to either the contact position or the avoidance position, It has, The avoidance position is a position in which the contact portion does not interfere with the moving guide rail, as described in Appendix 1 of the position adjustment device. (Note 3) The position adjustment device described in Appendix 2, wherein the avoidance position is a position above the contact position. (Note 4) The contact portion has a contact end that contacts the end face at one end of the guide rail, The aforementioned end face is the surface on which a projection for alignment is formed, which comes into contact with the other guide rail when the guide rail is installed. The position adjustment device according to Appendix 2 or Appendix 3, wherein the contact end has a groove wider than the protruding body and contacts the end face without contacting the protruding body. (Note 5) The aforementioned contact portion is A stopper is attached to the avoidance portion so as to be movable in the longitudinal direction, and is positioned so as to be aligned in the longitudinal direction with the guide rail that has moved when the contact portion is in the contact position, A buffer body fixed to the stopper and stopping the stopper at the stopping position in the longitudinal direction, It has, The position adjustment device according to any one of the appendices 2 to 4, wherein the stopping position is the position of the stopper when the stopper is in contact with the guide rail located at the longitudinal mounting position. (Note 6) The stopper is located upstream of the stopping position in the state before it comes into contact with the guide rail. The buffer is a position adjustment device as described in Appendix 5, which stops the stopper, which moves from the upstream side to the downstream side, at the stopping position. (Note 7) The buffer is a shock absorber that absorbs impact through a cylinder and a shaft movably disposed inside the cylinder. The shaft body is positioned relative to the cylinder on the side of the avoidance portion, and is positioned to collide with the avoidance portion when moving together with the stopper from the upstream side to the downstream side. The cylinder absorbs the longitudinal impact from the shaft moving inside, The position adjustment device according to Appendix 6, wherein the shaft body stops relative to the cylinder when the stopper is in the stop position. (Note 8) The buffer is a damper that absorbs shock by comprising a shaft movably disposed inside the cylinder and a spring disposed between the cylinder and the shaft inside the cylinder. The shaft body is positioned on the side of the avoidance portion relative to the cylinder, and is located in a position where it collides with the avoidance portion when moving together with the stopper from the upstream side to the downstream side. The spring absorbs the longitudinal shock from the shaft moving inside the cylinder. The position adjustment device according to Appendix 6, wherein the shaft body stops relative to the cylinder when the stopper is in the stop position. (Note 9) When the one end is in contact with the first position adjustment unit, the second position adjustment unit adjusts the position of the guide rail in the width direction to the width mounting position. Furthermore, The width direction is a direction perpendicular to the longitudinal direction and horizontal to the surface of the guide rail facing the surface plate. The position adjustment device according to any one of the appendices 1 to 8, wherein the width mounting position is a position in the width direction corresponding to the cover plate that is placed at the cover plate mounting position. (Note 10) A downstream conveying unit is positioned downstream of the conveying unit and moves the guide rail, to which the cover plate is attached, to a position downstream of the first position adjustment unit while supporting the guide rail so as not to come into contact with the cover plate. A position adjustment device according to any one of the appendices 1 to 9, further comprising the above. (Note 11) The downstream transport section is, A support portion that supports the guide rail at a position that does not come into contact with the aforementioned cover plate, A drive unit for moving the support unit downstream, A position adjustment device as described in Appendix 10, having the following characteristics: (Note 12) A support body that movably supports the guide rail between the transport section and the downstream transport section, When the guide rail to which the cover plate is attached moves from the transport section to the downstream transport section, a movable part moves the support from a first position to a second position, Furthermore, The first position is the position where the support is located when the cover plate is attached to the guide rail, and the distance from the transport section is shorter than the distance from the downstream transport section. The position adjustment device according to Appendix 10 or Appendix 11, wherein the second position is a position between the conveying unit and the downstream conveying unit, and the distance to the conveying unit is longer than the distance from the first position to the conveying unit. [Explanation of symbols]

[0096] 1 Position adjustment device, 2 First frame, 3 Second frame, 4 First base, 5 First position adjustment unit, 6 Downstream transport unit, 7 Second base, 8 Transport unit, 9 Second position adjustment unit, 10 Intermediate support unit, 11 Movable unit, 12 Support unit, 13 Beam, 14 Drive unit, 51 Contact unit, 52 Avoidance unit, 53 Stopper shaft, 54 Bushing, 55 Air cylinder, 55a Operating shaft, 56 Linear guide, 56a Fixed body, 56b Sliding body, 57 Stopper, 57a Contact end, 57b First end, 57c Second end, 58 Buffer, 58a Cylinder, 58b Shaft body, 58c Collision body, 59 Adjustment detector, 60 Drive unit, 61 Slats, 62 Brackets, 63 Bearings, 64 Conveyor shafts, 65 Sprockets, 66 Chain belts, 100 Upstream conveying line, 200 Downstream conveying line, 300 Mounting device, 300a Placement device, 300b Connecting device, 301a Placement section, 301b Connecting section, 400 Control device, 1000 Conveying system, B Bolts, G Guide rails, G1 Bottom, G2 Head, G3 Two sides, G4 Mounting holes, G5 End faces, G6 Projections, P Cover plates, P1 Connecting holes

Claims

1. A device for attaching a joint plate to an elevator guide rail to connect it to another guide rail, A transport unit that moves the guide rail along its longitudinal direction from the upstream side to the downstream side, A first position adjustment unit is positioned downstream of the transport unit and contacts one downstream end of the guide rail in the longitudinal direction as it moves from the transport unit, thereby adjusting the position of the guide rail in the longitudinal direction to the longitudinal mounting position. Equipped with, The longitudinal mounting position is a position adjustment device that corresponds to the longitudinal position of the cover plate, which is positioned at the cover plate mounting position for attaching the cover plate to the guide rail.

2. The first position adjustment unit is, A contact portion that comes into contact with the guide rail at the contact position when the guide rail moves, An avoidance unit that moves the contact portion to either the contact position or the avoidance position, It has, The position adjustment device according to claim 1, wherein the avoidance position is a position in which the contact portion does not interfere with the moving guide rail.

3. The position adjustment device according to claim 2, wherein the avoidance position is a position above the contact position.

4. The contact portion has a contact end that contacts the end face at one end of the guide rail, The aforementioned end face is the surface on which a projection for alignment is formed, which comes into contact with the other guide rail when the guide rail is installed. The position adjustment device according to claim 2, wherein the contact end has a groove wider than the protrusion and contacts the end face without contacting the protrusion.

5. The aforementioned contact portion is A stopper is attached to the avoidance portion so as to be movable in the longitudinal direction, and is positioned so as to be aligned in the longitudinal direction with the guide rail that has moved when the contact portion is in the contact position, A buffer body fixed to the stopper and stopping the stopper at the stopping position in the longitudinal direction, It has, The position adjustment device according to claim 2, wherein the stopping position is the position of the stopper when the stopper is in contact with the guide rail located at the longitudinal mounting position.

6. The stopper is located upstream of the stopping position in the state before it comes into contact with the guide rail. The buffer body stops the stopper, which moves from the upstream side to the downstream side, at the stopping position, as described in claim 5.

7. The buffer is a shock absorber that absorbs impact through a cylinder and a shaft movably disposed inside the cylinder. The shaft body is positioned relative to the cylinder on the side of the avoidance portion, and is positioned to collide with the avoidance portion when moving together with the stopper from the upstream side to the downstream side. The cylinder absorbs the longitudinal impact from the shaft moving inside, The position adjustment device according to claim 6, wherein the shaft body stops relative to the cylinder when the stopper is in the stop position.

8. The buffer is a damper that absorbs shock by comprising a shaft movably disposed inside the cylinder and a spring disposed between the cylinder and the shaft inside the cylinder. The shaft body is positioned on the side of the avoidance portion relative to the cylinder, and is located in a position where it collides with the avoidance portion when moving together with the stopper from the upstream side to the downstream side. The spring absorbs the longitudinal shock from the shaft moving inside the cylinder. The position adjustment device according to claim 6, wherein the shaft body stops relative to the cylinder when the stopper is in the stop position.

9. When the aforementioned end is in contact with the first position adjustment unit, a second position adjustment unit adjusts the position of the guide rail in the width direction to the width mounting position. Furthermore, The width direction is a direction perpendicular to the longitudinal direction and horizontal to the surface of the guide rail facing the surface plate. The position adjustment device according to any one of claims 1 to 8, wherein the width mounting position is a position in the width direction corresponding to the seam plate that is placed at the seam plate mounting position.

10. A downstream conveying unit is positioned downstream of the conveying unit and moves the guide rail, to which the cover plate is attached, to a position downstream of the first position adjustment unit while supporting the guide rail so as not to come into contact with the cover plate. A position adjustment device according to any one of claims 1 to 8, further comprising the above.

11. The downstream transport section is, A support portion that supports the guide rail at a position that does not come into contact with the aforementioned cover plate, A drive unit for moving the support unit downstream, The position adjustment device according to claim 10, having the following features.

12. A support body that movably supports the guide rail between the transport section and the downstream transport section, When the guide rail to which the cover plate is attached moves from the transport section to the downstream transport section, a movable part moves the support from a first position to a second position, Furthermore, The first position is the position where the support is located when the cover plate is attached to the guide rail, and the distance from the transport section is shorter than the distance from the downstream transport section. The position adjustment device according to claim 10, wherein the second position is a position between the conveying unit and the downstream conveying unit, and the distance to the conveying unit is longer than the distance from the first position to the conveying unit.

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