JP4841969B2 - Conveying apparatus and conveying method - Google Patents

Description

  The present invention relates to a transport apparatus and a transport method for transporting a long transport object such as a wiper blade used in a vehicle wiper at a high speed in the short direction (transverse transport).

Conventionally, a workpiece (conveyed material) in a production line is conveyed by being placed on a predetermined conveying pallet as necessary by a conveying conveyor using a chain, a belt, a roller, or the like. And the stop was performed mechanically by making a workpiece | work or a pallet collide with a predetermined | prescribed stopper unit.
However, in such a conveyor for conveyance, it is necessary to provide a stopper unit for each stop position of the conveyed object. Moreover, since the conveyed product bounces when the stopper collides, it is necessary to provide an anti-back unit. Therefore, the configuration of the transport device is complicated, which causes an increase in cost.

Conventionally, in order to transport a long object such as a wiper blade, the longitudinal direction is generally the transport direction (vertical feed transport). However, when the longitudinal direction is arranged in the conveyance direction, there is a problem that the entire production line becomes long. On the other hand, if the transverse direction is carried by placing the short side direction on the carrying conveyor in the carrying direction, the total length of the production line can be shortened.
However, when a long object is placed on the conveyor with the short direction facing the conveying direction, the object or pallet is easy to rotate on the conveyor. It was necessary to provide. Therefore, the structure of the transport device is further complicated, which causes an increase in cost.

In addition, in order to perform lateral feed conveyance, the structure in which both ends of a long pallet are guided by guide rails or the like and moved in the conveyance direction is conveyed by transmitting driving force to one place if the pallet has a relatively short longitudinal direction. However, due to play and rattling of the guide rail portion that guides both ends of the pallet, the timing of the both end portions of the pallet may be shifted and caught during the conveyance, and smooth movement may not be achieved. In addition, the effect becomes stronger as the conveyance speed becomes higher. Therefore, in order to avoid such problems and enable high-speed conveyance corresponding to mass production, it is conceivable to transmit driving forces to both ends of the pallet and synchronize them.
For example, a mountain-shaped rack is formed on both ends of a transfer pallet or a transfer conveyor, a gear is connected to the racks on both sides, and a timing chain connected to a drive motor is stretched to this gear, and the timing chain, gear, rack By transferring the driving force in this order, there is one in which both ends of the transport pallet or the transport conveyor are synchronized to achieve a balance (see, for example, Patent Document 1).

JP-A-6-9043

However, in the configuration of Patent Document 1, since the gear and the rack are directly meshed with each other, the friction between the gear and the rack may be biased during high-speed conveyance, and the problem is that synchronization cannot always be achieved. is there. In addition, there is a problem that gear noise increases due to friction, and noise increases due to constant contact between the chain and the pallet. Further, in order to increase the wear resistance of the contact surface, it is necessary to quench the contact surface, which causes a cost increase.
Further, instead of a method of transporting the pallet using a chain or belt mechanism, there is a method of transporting by holding the pallet with a gripper and moving the gripper claw in the transport direction by driving a cam feed mechanism or driving a ball screw. However, in the cam drive and ball screw drive, it is necessary to provide a detent for preventing the conveyed product from rotating together with the pallet or to provide grippers at both ends of the pallet, which complicates the configuration. In addition, since it takes time to open and close the gripper claws and to return the cam and the ball screw, a pallet conveyance waiting time is generated, and the conveyance is delayed correspondingly. Further, since the mechanical mechanism is complicated, there is a problem that the equipment cost increases and the apparatus becomes large.
There is also a method of connecting the pallet to a screw extending in the transport direction and transporting the pallet based on the rotation of the screw. However, this method also has a complicated mechanical mechanism, which increases the equipment cost and increases the size of the device. There is a point.

  In view of the above-described problems, the present invention provides a transport device for laterally transporting a long object. When a driving force is transmitted to both ends of a transport pallet to perform high-speed transport, the timing difference between both ends of the pallet is not long. An object is to prevent sticking, stabilize the posture of the conveyed product in the laterally conveyed conveyance, and reduce impact and noise during conveyance so that long distances can be conveyed with high speed and accuracy. Moreover, it aims at reducing an installation cost, without using a complicated mechanism.

According to the present invention, the subject includes a transport pallet unit on which a transported article is placed, and a transport mechanism that transports the transport pallet unit, and at both ends of the transport pallet unit, A plurality of rollers that are rotatable about an axis substantially perpendicular to the transport direction are disposed at predetermined intervals along the transport direction, and the transport mechanism includes a guide unit that supports both ends of the transport pallet unit movably. A plurality of sprockets installed at predetermined intervals along the guide portion so as to be capable of meshing with the rollers, and a drive unit coupled to the sprockets via a transmission mechanism . the sprockets of both ends of the transport pallet unit, the installed the sprocket at one end, and is constituted by the installed the sprocket at the other end, the transport mechanism, the drive unit Said sprocket disposed at one side based on the force, by rotating synchronously through the transmission mechanism and the sprocket placed at the other end, the transport pallet unit to rotate the said rollers This is solved by moving both ends of the frame synchronously.

As described above, in the present invention, a plurality of rotatable rollers are provided at both ends of the conveyance pallet unit, the rollers and the sprocket are meshed, and the conveyance pallet unit is moved while rotating the rollers as the sprocket rotates. ing. As described above, since the rotatable roller is interposed between the sprocket and the transport pallet unit, the roller serves as a bearing to reduce friction between the transport pallet unit and the transport mechanism and to generate an impact. Reduced. Therefore, wear can be reduced, failure rate can be reduced, maintenance can be facilitated, and cost can be reduced. In addition, noise during conveyance is reduced. Further, the driving load during transportation can be reduced by reducing friction.
Further, since the shift of the movement timing at both ends of the conveyance pallet part due to friction or impact is prevented, the movement of the conveyance pallet part is prevented even during high-speed conveyance, and the movement becomes smooth and the posture is stabilized. Accordingly, it is possible to stabilize the posture of the conveyed product even during the lateral feed conveyance.

Further, according to the present invention, the inertia at the time of conveyance is absorbed by the rotation of the roller, stable conveyance is possible, and stop control is facilitated. Further, the gap between the meshing portions can be adjusted by adjusting the position of the roller and the sprocket, and the feed accuracy can be adjusted.
Further, in the present invention, a sprocket disposed at one side of the transport pallet unit are synchronously rotated by connecting the sprocket installed on the other end to the drive unit via a transmission mechanism. Thus, since the sprocket that can be meshed with both ends of the transport pallet unit is rotated in synchronization with a simple configuration of being connected to a single drive unit, the equipment cost is reduced. In addition, the synchronous rotation of the sprocket prevents the movement timing from shifting at both ends of the transport pallet section even during high-speed transport, preventing rattling, and stabilizing the posture of the transported object even during lateral feed transport. Can be achieved.
Moreover, since it is not necessary to provide the stopper mechanism for a stop in the structure of this invention, a structure is simplified and equipment cost is reduced.

In the present invention, more specifically, the transmission mechanism includes a transmission sprocket assembled to each of the rotation shafts of the plurality of sprockets, and the transmission sprocket stretched on the plurality of transmission sprockets. An endless belt-like connecting member connected to each other , each of the transmission sprockets being connected via the connecting member, and the rotation shaft of one of the transmission sprockets is the drive by being connected to the part of the output shaft, the output shaft of the drive unit, may be linked structure in each of the rotary shaft of the transmission sprocket.
In the present invention, more specifically, one end side of the output shaft of the drive unit is connected to a rotation shaft of a sprocket that can mesh with a roller on one end side of the transport pallet unit, and the output shaft The rotation end of a sprocket that can mesh with the roller on the other end of the transport pallet is connected to the other end of the transport pallet so that both ends of the transport pallet are moved synchronously. I can .
As this, the respective interlockable sprocket roller, a simple transmission mechanism that stretched an endless belt-shaped connecting member, such as a chain or a timing belt transmission sprocket and both ends of the output shaft of the drive unit by applying a simple transmission equipment 構等 that respectively connected to the rotation shaft of the arranged on both end sides of the transport pallet section sprocket can rotate in good synchronization at both ends of the transport pallet portion.

  In the present invention, more specifically, the wiper blade can be placed on the transport pallet unit with its short direction facing substantially the same direction as the transport direction. As described above, when the present invention is applied to the conveyance of a long object such as a wiper blade, the production line length can be shortened by performing the lateral feed conveyance in which the conveyance direction and the short direction coincide with each other. Further, as described above, the posture of the conveyed product can be stabilized even during high-speed conveyance, which is preferable.

In addition, according to the present invention, the object is placed on the transport pallet unit supported at both ends by the guide unit such that the short direction of the transport object substantially coincides with the transport direction of the transport pallet unit. A first step of meshing a plurality of rollers rotatably disposed at both ends of the transport pallet unit with a plurality of sprockets installed at predetermined intervals along the guide unit, and driving the plurality of sprockets The second step of rotating the rollers meshed with the sprocket and moving both ends of the transport pallet unit synchronously by rotating them synchronously via the transmission mechanism by the unit is solved. The
In this way, in the case of performing lateral feed conveyance in which the conveyance direction and the short direction coincide with each other in the conveyance of a long object, after installing a rotatable roller between the sprocket and the conveyance pallet part, The sprocket engaged with the roller is rotated synchronously at both ends of the transport pallet unit. Thereby, as above-mentioned, a roller becomes a bearing and friction and an impact are reduced. Therefore, wear can be reduced, failure rate can be reduced, maintenance can be facilitated, and cost can be reduced. In addition, noise during conveyance is reduced. Further, the driving load during transportation can be reduced by reducing friction. In addition, it is possible to stabilize the posture of the conveyed product even during the transverse feeding. In addition, the rotation of the roller absorbs the inertia at the time of conveyance, enabling stable conveyance and facilitating stop control.

In the present invention, more specifically, in the first step, the wiper blade is placed on the transport pallet unit so that the short direction thereof coincides with the transport direction, and in the second step, The wiper blade can be configured to be transported together with the transport pallet unit . In this way, in the conveyance of a long object such as a wiper blade, the production line length can be shortened by carrying out the lateral feed conveyance in which the conveyance direction and the short direction coincide with each other. Further, as described above, the posture of the conveyed product can be stabilized even during high-speed conveyance, which is preferable.

The present invention has the following effects.
A roller interposed between the sprocket and the transport pallet unit serves as a bearing to reduce friction between the transport pallet unit and the transport mechanism and to reduce the occurrence of impact. Therefore, noise during conveyance is reduced. In addition, it is possible to prevent the shift of the movement timing at both ends of the transport pallet part due to friction and impact, to prevent rattling during high-speed transport, and to stabilize the posture of the transported object and improve the feeding accuracy.
○ Equipment costs can be reduced due to reduced wear and reduced failure rate. Further, since it is not necessary to provide a stopper mechanism for stopping, the configuration is simplified. In addition, the sprocket is rotated synchronously by a simple configuration in which it is connected to a single drive unit. Therefore, the equipment cost is reduced.
○ The length of the production line can be shortened by carrying out lateral feed conveyance in which the conveyance direction and the short direction coincide.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. It should be noted that members, arrangements, and the like described below do not limit the present invention, and it goes without saying that various modifications can be made in accordance with the spirit of the present invention.
1 to 8 relate to an embodiment of the present invention, FIG. 1 is a plan view of a transport pallet unit on which a wiper blade is placed, FIG. 2 is a side view of the transport pallet unit, and FIG. 3 is a transport pallet. 4 is a plan view of the transport mechanism (guide section, sprocket section, chain and drive section), and FIGS. 5 and 6 are cross-sectional views of the transport mechanism (FIG. 4). BB cross-sectional view, CC cross-sectional view), FIG. 7 is a cross-sectional explanatory view (DD cross-sectional view of FIG. 4) showing the meshed state of the sprocket part and the roller, FIG. 8 is the sprocket part of the roller and chain It is sectional explanatory drawing (EE sectional drawing of FIG. 4) which shows an assembly | attachment state.

An embodiment in which the transport apparatus of the present invention is applied to a transport apparatus for transporting pallets used for transporting a wiper blade placed on a pallet will be described.
(Conveyor configuration)
The wiper blade W transported by the transport device S of this example can be suitably used as a wiper blade of a vehicle wiper. The transport apparatus S of the present example is configured to be able to transport (longitudinal transport) the long and slender wiper blade W in the short direction rather than the long direction.
The transport device S is installed along the transport direction of the transport pallet unit 10 with the transport pallet unit 10 transported on a predetermined path with the wiper blade W as a transported object placed thereon. A guide unit 20 that is movably supported, a sprocket unit 30 that is installed along the guide unit 20 at regular intervals, a chain 40 that is stretched around the sprocket unit 30, and a drive unit 50 that rotationally drives the sprocket unit 30. Are the main components.

First, the configuration of the transport pallet unit 10 will be described. As shown in FIGS. 1 to 3, the transport pallet unit 10 is provided on a pallet 11 for placing the wiper blade W, a support member 12 that supports both ends of the pallet 11, and a lower surface of the support member 12. The bearing 13 and the roller 14 provided on the side surface of the support member 12 are provided.
The pallet 11 of this example is configured by attaching an upper pallet 11B to the upper surface of a plate-like lower pallet 11A. A joining plate 11a is erected at a predetermined position on the upper surface of the lower pallet 11A, and the joining plate 11a and the upper pallet 11B are joined via a joining pin 11b. The lower pallet 11 </ b> A and the upper pallet 11 </ b> B are both substantially rectangular in plan shape, and the long side dimension is larger than the length of the wiper blade W, and the short side dimension is larger than the width of the wiper blade W. Accordingly, the wiper blade W can be placed and transported on the upper surface of the upper pallet 11B.
In this example, a groove is formed in the approximate center of the upper pallet 11B as shown in FIG. 1. However, for example, by making this groove corresponding to the shape of the lower surface of the wiper blade W, the wiper blade W It is also possible to use for positioning and detent.

The support member 12 is a rod-shaped member having a substantially rectangular cross section, and the end portion on the short side of the lower pallet 11A is joined to the side surface 12a on the long side with a bolt or the like. A plurality of rollers 14 are installed at regular intervals below the side surface 12a. A plurality of bearings 13 are provided on the side 12b on the short side facing downward.
The roller 14 has a shaft 14a formed so as to protrude substantially vertically from the side surface 12a, and a substantially cylindrical roller surface 14b that is rotatable about the shaft 14a is formed on the outer periphery. In this example, the plurality of rollers 14 are provided in a line at a substantially constant interval and in parallel with the side surface 12b. That is, the roller surfaces 14b of the plurality of rollers 14 are arranged at the both ends of the transport pallet unit 10 so as to form an uneven shape. And this uneven | corrugated shape is formed so that it can mesh with the tooth | gear of the 1st sprocket 31 mentioned later. In this example, since the arrangement of the plurality of rollers 14 and the teeth of the first sprocket 31 can be meshed as described above, the teeth are engaged between the teeth and the valleys of the teeth as the first sprocket 31 rotates. The roller 14 is pressed and moved in the rotation direction, and the support member 12 and the pallet 11 fixedly supported by the support member 12 can be linearly moved based on the pressing force.

As shown in FIG. 3, the bearing 13 is disposed so as to partially protrude from a recess formed in the side 12 b on the short side facing the lower side of the support member 12. A plurality of recesses are formed on the side surface 12 b of the support member 12, and a plurality of bearings 13 are provided on the lower surface side of each support member 12. Accordingly, the support member 12 comes into contact with the support surface 21 a formed on the guide rail 21 described later via the plurality of bearings 13. Therefore, the support member 12 can travel on the support surface 21 a with low friction while being stably supported by the plurality of bearings 13.
The bearing 13 is, for example, a columnar member in which a sphere is rotatably held on a substantially cylindrical outer peripheral surface, and the support member 12 is configured such that the central axis thereof is rotatably held in the recess of the support member 12. Is attached. At this time, the bearing 13 is attached so that the rotation direction and the conveyance direction of the pallet 11 are the same direction. In addition to such a configuration, various known bearings can be used.

Next, the structure of the conveyance mechanism provided with the guide part 20, the sprocket part 30, the chain 40, and the drive part 50 is demonstrated, referring FIGS. 4-8.
As shown in FIGS. 4 to 6, the guide unit 20 is installed at a predetermined interval so as to support two guide rails 21, which are installed along the transport path of the transport pallet unit 10. A plurality of support columns 22. The two guide rails 21 are installed at substantially the same interval as the interval between the support members 12 provided at the left and right ends of the conveying pallet unit 10, and the upper surface has a width that allows the above-described bearing 13 to travel. A support surface 21a is formed.

As shown in FIG. 4, the sprocket units 30 are installed in two rows along the two guide rails 21 at predetermined intervals. Each sprocket portion 30 includes a first sprocket 31 installed in the vicinity of the guide rail 21, a second sprocket 32 disposed on substantially the same central axis as the first sprocket 31, and the center of the first sprocket 31. A substantially horizontal rotating shaft 33 in which the center of the second sprocket 32 is non-rotatably assembled; a bearing portion 34 that rotatably supports the rotating shaft 33 between the first sprocket 31 and the second sprocket 32; It has.
Thus, each sprocket part 30 has the 1st sprocket 31 and the 2nd sprocket 32 connected with the rotating shaft 33. Accordingly, the first sprocket 31 can be driven to rotate as the second sprocket 32 is driven to rotate.
The first sprocket 31 of this example corresponds to the sprocket of the present invention, and the second sprocket 32 of this example corresponds to the transmission sprocket of the present invention.

In addition, the sprocket portions 30 are each installed in one row along the two guide rails 21 as described above, but the sprocket portions 30 belonging to the same row are annularly attached to the second sprocket 32. They are connected to each other by a chain 40. Accordingly, the second sprockets 32 belonging to the same row are all driven to rotate synchronously by rotating one of them. And since the 2nd sprocket 32 is connected with the 1st sprocket 31 and the rotating shaft 33, after all the 1st sprocket 31 and the 2nd sprocket 32 which belong to the same row | line | column are rotated synchronously. It has become.
In this example, the chain 40 is used as a transmission member for synchronously rotating the sprocket portion 30. However, instead of the chain 40, the rotary shaft 33 may be synchronously rotated by being connected by a timing belt or a gear gear. Good. In short, an endless belt-like connecting member may be used as the transmission member. In addition, it is preferable that the material of the chain 40 is a material that generates less noise.

  As shown in FIGS. 7 and 8, the first sprocket 31 and the second sprocket 32 are formed with teeth having a predetermined shape on the outer peripheral surface thereof. As described above, the teeth of the first sprocket 31 are meshed with the plurality of rollers 14 provided in a row at the lower side of the support member 12. That is, the dimension of the first sprocket 31 between the teeth and the valley of the teeth is such that the roller 14 can be engaged at the installation position. The first sprocket 31 is installed at a position where the teeth of the first sprocket 31 and the roller 14 can come into contact with each other by the rotation of the first sprocket 31 as described above. Thus, if the roller surface 14b and the teeth of the first sprocket 31 can come into contact with the rotation of the first sprocket 31, the roller 14 can be pressed in the transport direction by the first sprocket 31. Therefore, the conveyance pallet unit 10 can be moved in the conveyance direction together with the roller 14.

  Further, in this example, the number of the rollers 14 arranged at the end of the transport pallet unit 10 and the installation interval of the adjacent sprocket units 30 are the rollers 14 arranged in a line during the transport of the transport pallet unit 10. Is set such that at least a part thereof is always able to mesh with any one of the first sprockets 31. Thereby, the meshing state of the roller 14 and the first sprocket 31 is always ensured during the conveyance of the conveyance pallet unit 10. Therefore, it is possible to forcibly carry out any position on the carrying path.

  As shown in FIGS. 4 and 6, the drive unit 50 includes a drive motor 51 installed between two rows of sprocket units 30, and a linear output shaft 52 that is rotationally driven based on the output of the drive motor 51. And two bearing portions 53, 53 that rotatably support both ends of the output shaft 52, respectively. A predetermined transmission mechanism connected to the drive motor 51 is connected to the center of the output shaft 52, and the output of the drive motor 51 is transmitted to the output shaft through this transmission mechanism. Further, both ends of the output shaft 52 are connected to each of the two rows of sprocket parts 30. That is, in this example, one end side of the output shaft 52 is any one of the sprocket parts 30 belonging to one row, and the other end side is any one of the sprocket parts 30 belonging to the other row. It is a rotating shaft.

With this configuration, the drive unit 50 can rotate the two rows of sprocket units 30 synchronously. That is, as both ends of the output shaft 52 are rotated synchronously, the first sprocket 31 and the second sprocket 32 assembled to both ends are rotated synchronously. Then, as the second sprockets 32 belonging to the same row are rotated in synchronization by the chain 40, the first sprocket 31 is also rotated in synchronization.
Thus, in this example, the two rows of the first sprockets 31 arranged along the two guide rails 21 can all be rotated synchronously. That is, the first sprockets 31 that mesh with the rollers 14 provided at both ends of the transport pallet unit 10 are all rotated synchronously. Therefore, the conveyance timings at both ends of the conveyance pallet unit 10 are not shifted during high-speed conveyance, and the conveyance can be performed in a balanced manner. Therefore, the occurrence of rattling can be prevented, and the posture of the conveyed product can be stabilized even during the lateral feed conveyance.
Since it is generally difficult to synchronize a plurality of drive motors by control, it is more reliable and easier to rotate the plurality of drive motors based on the output of the single drive motor 51 in this way. One sprocket 31 can be synchronized.

Further, the drive unit 50 of this example may be configured to be able to control the acceleration / deceleration pattern of the drive motor 51. That is, a servo motor, a stepping motor, or the like is used as the drive motor 51, and a drive unit 51 is driven by a predetermined acceleration / deceleration pattern by providing a control unit that controls a voltage applied to the drive motor 51. Thereby, the acceleration / deceleration pattern of the rotation of the first sprocket 31 is controlled, and the conveyance speed pattern of the conveyance pallet unit 10 can be freely controlled. Therefore, the conveyance pallet part 10 can be conveyed with a desired conveyance speed pattern in processes such as assembly, processing, and inspection on the production line. Further, it is possible to prevent the conveyed product from rolling on the conveyance pallet unit 10 by speed control such as slow start when the conveyance pallet unit 10 starts moving and slow stop when the conveyance pallet unit 10 stops.
If speed control and stop control are performed in this way, there is no need to provide a stopper mechanism for stopping. Therefore, the configuration of the apparatus is simplified and the equipment cost is reduced.

  In the configuration of this example, as described above, since the rotatable roller 14 is interposed between the first sprocket 31 and the support members 12 provided at both ends of the transport pallet unit 10, the rotation is possible. The roller 14 serves as a bearing to reduce friction between the transport pallet unit 10 and the first sprocket 31 of the sprocket unit 30 constituting the transport mechanism, and to reduce the occurrence of an impact on the transport pallet unit 10. Therefore, wear can be reduced, failure rate can be reduced, maintenance can be facilitated, and cost can be reduced. In addition, noise during conveyance is reduced. Further, since the shift of the movement timing at both ends of the conveyance pallet unit 10 due to friction and impact is prevented, the conveyance pallet unit is prevented from rattling even during high-speed conveyance, and the movement becomes smooth and the posture is stabilized. Accordingly, it is possible to stabilize the posture of the conveyed product even during the lateral feed conveyance.

In this example, the bearing 13 is interposed between the support member 12 and the support surface 21a to reduce friction, and the roller 14 is interposed so that the conveying pallet unit 10 and the first sprocket 31 Friction reduction during the period is achieved. As described above, since the friction between all the contact surfaces of the transport pallet unit 10 and the transport mechanism is reduced, the driving load at the time of transport is reduced.
In this example, since the roller 14 is rotatable, the roller 14 can be rotated at the time of stopping or accelerating / decelerating to absorb the inertia at the time of conveyance. Thereby, stable conveyance is possible, and acceleration / deceleration control and stop control are also facilitated. Further, by adjusting the position of the roller 14 and the first sprocket 31, the gap between the meshing portions of both members can be adjusted, and the feed accuracy can be adjusted.

(Conveying method)
Next, the conveyance method of the conveyed product performed using the said conveying apparatus is demonstrated.
First, in the first step, both ends of the transport pallet unit 10 of the transport device S are placed on the support surfaces 21a of the two guide rails 21 so as to be movably supported through the bearings 13, and the transport pallet The plurality of rollers 14 provided at both ends of the portion 10 are engaged with the plurality of first sprockets 31 respectively installed along the two rows of guide rails 21. At the same time, a transported object (for example, wiper blade W) is placed on the upper surface of the upper pallet 11B of the transport pallet unit 10 in such a direction that its short direction substantially coincides with the transport direction. At this time, the transport pallet unit 10, the first sprocket 31, the roller 14 and the like are stationary.

  Subsequently, in the second step, driving of the driving unit 50 is started. Thereby, based on the fact that both ends of the output shaft 52 of the drive motor 51 are rotated synchronously, the first sprocket 31 and the second sprocket 32 assembled to both ends of the output shaft 52 are respectively rotated synchronously. The And the 2nd sprocket 32 which belongs to the same row | line | column by the chain 40 is each rotated synchronously, and the 1st sprocket 31 assembled | attached to the same rotating shaft as the 2nd sprocket 32 is also rotated synchronously. That is, based on the output of the drive motor 51, all the first sprockets 31 are rotated synchronously via the transmission mechanism including the output shaft 52, the chain 40, and the second sprocket 32.

  At this time, based on the rotation of the first sprocket 31, the teeth of the first sprocket 31 come into contact with the surface of the roller 14 meshed with the first sprocket 31, and the roller 14 slides along the surface of the roller 14. Is pressed in the conveying direction. As a result, the roller 14 is pressed and moved in the transport direction while rotating, whereby the support member 12 moves on the guide rail 21 support surface 21a via the bearing 13 with low friction. That is, the transport pallet unit 10 is moved while being supported by the guide rails 21 at both ends. In this example, since the 1st sprocket 31 is rotated synchronously, the roller 14 is rotated and pressed synchronously in the both ends of the conveyance pallet part 10. FIG. Therefore, both ends of the transport pallet unit 10 are moved in the transport direction in synchronism, and there is no shift in the movement timing at both ends of the transport pallet unit 10.

  In the transport device S of this example, the transport pallet unit 10 can be transported stably at a transport speed of about 0.6 m / sec by the above-described configurations. On the other hand, the conveyance speed of the conventional conveyance conveyor is about 0.3 m / sec, and a significant increase in speed is achieved compared to the conventional one.

It is a top view of the conveyance pallet part concerning this embodiment. It is a side view of the conveyance pallet part concerning this embodiment. It is sectional drawing (AA sectional drawing of FIG. 1) of the conveyance pallet part which concerns on this embodiment. It is a top view of the conveyance mechanism concerning this embodiment. It is sectional drawing (BB sectional drawing of FIG. 4) of the conveyance mechanism which concerns on this embodiment. It is sectional drawing (CC sectional drawing of FIG. 4) of the conveyance mechanism which concerns on this embodiment. It is a section explanatory view of a sprocket part and a roller concerning this embodiment. It is a section explanatory view of a sprocket part, a roller, and a chain concerning this embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Conveying pallet part, 11 ... Pallet, 11A ... Lower pallet, 11B ... Upper pallet 11a ... Joining plate, 11b ... Joining pin, 12 ... Support member, 12a ... Side, 12b ... Side 13 ... Bearing, 14 ... Roller, 14a ··· shaft, 14b · roller surface · 20 · guide portion 21 · guide rail · 21a · support surface · 22 · support column · 30 · sprocket portion
31... 1st sprocket, 32... 2nd sprocket, 33... Rotating shaft, 34... Bearing 40 .. Chain, 50. …… Wiper blade

Claims (6)

A transport pallet unit on which a transported article is placed, and a transport mechanism for transporting the transport pallet unit,
At both ends of the transport pallet unit, a plurality of rollers that are rotatable about an axis substantially perpendicular to the transport direction of the transport pallet unit are disposed at predetermined intervals along the transport direction,
The transport mechanism includes a guide unit that movably supports both ends of the transport pallet unit, a plurality of sprockets that are installed along the guide unit at predetermined intervals so as to be able to mesh with the rollers, and a transmission to the sprocket. A drive unit connected through a mechanism,
The plurality of sprockets are composed of the sprockets installed on one end side of both ends of the transport pallet unit, and the sprockets installed on the other end side,
The transport mechanism is configured to rotate the sprocket installed on one end side and the sprocket installed on the other end side synchronously via the transmission mechanism based on the output of the drive unit, A conveying apparatus characterized in that a roller is rotated and both ends of the conveying pallet part are moved synchronously. The transmission mechanism includes a transmission sprocket assembled to each of the rotation shafts of the plurality of sprockets, and an endless belt-like connecting member that is stretched around the plurality of transmission sprockets and connects the transmission sprockets to each other. Prepared,
Each of the transmission sprockets is connected via the connecting member, and the rotation sprocket of one of the transmission sprockets is connected to the output shaft of the drive unit, so that the drive part of the output shaft, the conveying apparatus according to claim 1, characterized in that connected to each of the rotation shaft of the transmission sprocket.   A rotating shaft of a sprocket that can mesh with a roller on one end side of the transport pallet unit is connected to one end side of the output shaft of the drive unit, and the other end side of the output shaft is connected to the end of the transport pallet unit. The transport apparatus according to claim 2, wherein both ends of the transport pallet unit are moved synchronously by connecting a rotation shaft of a sprocket that can mesh with a roller on the other end side.   The transport apparatus according to claim 1, wherein the wiper blade is placed on the transport pallet unit so that a short direction thereof substantially coincides with the transport direction. The transported article is placed on the transport pallet unit supported at both ends by the guide unit so that the short direction of the transported object substantially coincides with the transport direction of the transport pallet unit , and is rotatable at both ends of the transport pallet unit. A first step of engaging a plurality of disposed rollers with a plurality of sprockets installed at predetermined intervals along the guide portion;
A second step of rotating the plurality of sprockets synchronously via a transmission mechanism by a drive unit to rotate a roller meshed with the sprocket and to move both ends of the transport pallet unit synchronously; Carrying method. In the first step, the wiper blade is placed on the transport pallet unit so that the short direction thereof coincides with the transport direction,
The transport method according to claim 5 , wherein in the second step, the wiper blade is transported together with the transport pallet unit .

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