JP2008068954A - Rotary working bench and production work method by use of it - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make effective use of a limited space at a production site to improve workability. <P>SOLUTION: A worker A puts a semifinished product onto the rotary working bench 1. The semifinished product put on it is conveyed in accordance with rotation of a lower step rotary plate 4 and an upper step rotary plate 6 while the semifinished product is put on a face for putting it of a conveyance plate 30. When the conveyance plate 30 on which the semifinished product is put reaches a cam blade 40 installation section, the conveyance plate 30 is inclined to drop the semifinished product. The dropped semifinished product is transferred onto an upper face of the lower step rotary plate 4 through a guide chute 42. The transferred semifinished product passes a section where the worker A is assigned and reaches a section where a worker B is assigned to transfer it to the next process sequentially from here. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to, for example, a rotary work table used for production work of electronic components and the like, and a production work method performed using the same.

  As a prior art related to this type of rotary work table and production work method, there is known a transport device for performing assembly work of parts using an annular transport plate and a production method using the same (Patent Document 1). reference). In this prior art, the inner and outer transport plates are rotatably supported on a table and the inner or outer transport plate is rotated so that the components placed on these are transported separately.

In particular, in the above-described prior art, by arranging a plurality of workers around the transport device, these workers can transport different parts individually via the inner transport plate and the outer transport plate. In this case, since a plurality of workers can simultaneously assemble the parts using the inner conveyance plate and the outer conveyance plate, it is expected that the work efficiency is increased accordingly.
Japanese Patent No. 3538583

  However, when a production line is configured using an annular conveying plate as in the prior art, the total length is limited to a maximum of one round. Therefore, since the number of work processes that can be covered by one production line is also limited within a range that can be accommodated within one round, there is a limit to improving workability. In addition, since it is necessary to complete all the steps before the first put-in component has completed at least one round, there is an inconvenience that it is not possible to split each step for a long time.

  In the prior art, when various parts are not transported on one production line, it is not necessary to transport different parts separately between the inner transport plate and the outer transport plate. There is also a problem.

  Therefore, an object of the present invention is to provide a technique capable of effectively utilizing a limited space and improving workability even in an aspect in which an object is conveyed through an annular path.

  The rotary worktable of the present invention has a configuration in which an annular transport surface is also arranged outside the annular mounting surface, and the work surface is rotated by rotating the mounting surface and the transport surface around the center point. Are to be transported. Among these, a work object can be input from the outside to the inner mounting surface, and the input work object is conveyed in the circumferential direction by rotating the mounting surface. In particular, the present invention solves the above-mentioned problem by discharging the work object carried on the placement surface to the outside from the placement surface at a specific position in the circumferential direction and transferring it to the conveyance surface. To do. The outer conveyance surface receives the work object discharged from the placement surface, and conveys the work object while rotating around the center point.

  According to the rotating work table of the present invention, the work object that is initially input is transported in the circumferential direction while being placed on the mounting surface, and then transferred to the outer transport surface and subsequently transported in the circumferential direction. In this case, the transport path of the work object includes not only the length of the section in which the placement surface rotates from the first loading position to the specific position, but also the length of the section in which the transport surface continues to rotate from this specific position. Additional configurations can be made. For this reason, for example, since a single type of work object can be transported using one or more sections, the work object and its deposits are dried or cured during this time. The necessary time can be secured. Alternatively, since the work object can be transported using a section of one or more rounds, more work processes can be performed during this time.

  More specifically, the rotary worktable of the present invention has a circular base plate and an annular lower rotating plate and upper rotating plate installed thereon. The base plate has a form in which a plurality of workers can be arranged around it, and is appropriately positioned at a height suitable for work from the floor of the work place. The lower rotating plate is rotatably installed on the base plate via an annular rotation guide. On the upper surface of the lower rotating plate, a conveying surface for the work object is formed, and the central portion is open.

  The rotating work table also includes a drive source. The drive source is installed on the base plate at a position outside the opening of the lower rotating plate. The power of this drive source is transmitted to the rotation guide via the transmission member. Thereby, a lower stage rotation board can be rotated with a rotation guide. The upper rotating plate is connected to the lower rotating plate at a position spaced upward from the lower rotating plate. For this reason, the upper stage rotating plate can be rotated together with the lower stage rotating plate by the power of the drive source. The upper rotating plate is set to have an outer diameter smaller than that of the lower rotating plate, and has a form in which the central portion is opened.

  The annular mounting surface is configured as follows. That is, the transport plate is arranged on the upper rotating plate in a ring shape along the outer peripheral edge. The transport plate has a mounting surface on which work objects input from the outside of the base plate can be stacked. By arranging the mounting surfaces of the individual transport plates one after another in the circumferential direction, an annular mounting surface is configured as a whole.

  The transport plate is individually connected to the upper rotating plate via a connector. This connector supports the transport plate so that it can be displaced with respect to the upper rotating plate. That is, the transport plate can be displaced between a stationary position whose mounting surface is along the upper surface of the upper rotating plate and an inclined position that is inclined downward toward the outside of the upper rotating plate.

  A driven member is connected to the transport plate at a position below the outer edge of the upper rotating plate and above the lower rotating plate. The driven member has a function of displacing the transport plate from the stationary position toward the inclined position when receiving an external force inward from the outer edge of the upper rotating plate at the connected position.

  The rotating worktable includes an external force applying member provided at a specific position on the peripheral edge with respect to the base plate. The external force applying member is for applying an external force to the driven member. Specifically, when the upper rotating plate is first rotated by the power of the driving source, the driven member moves in the circumferential direction together with the conveying plate. At this time, the external force applying member can relatively contact the driven member at a specific position, and can apply an external force to the driven member.

  When the driven member receives an external force as described above, the conveying plate is displaced to the inclined position, and the mounting surface is inclined downward toward the outside of the upper rotating plate. At this time, the work object placed on the placement surface falls along the downward slope, and thus is automatically transferred to the conveyance surface of the lower rotating plate.

  According to the rotating work table described above, the mounting surface and the transport surface can be rotated with a simple configuration that only transmits the power of the drive source to the rotation guide, so that the rotating work table is light and inexpensive. be able to.

  In addition, the drive source is located outside the center position of the base plate, and both the lower rotating plate and the upper rotating plate are open at the center, so that an empty space is secured in the center of the rotating work table. Yes. For this reason, this invention can raise the convenience at the time of work using a rotary worktable by installing a work jig, a tool, an attached facility, etc. in the empty space in the center.

  In addition, the table may be installed in the vacant space of the center position. The table can be installed inside the rotation guide on the base plate through the openings of the lower rotation plate and the upper rotation plate.

  Moreover, practically, it is preferable that the rotating work table includes a guide chute installed below the upper rotating plate at a specific position together with the external force applying member. The guide chute is inclined downward in the rotation direction of the lower rotating plate. For this reason, the work object dropped from the placement surface when the transport plate is displaced to the inclined position is received by the guide chute, where the dropping direction is converted into the transport direction of the lower rotating plate. In this case, since the work object does not fall directly from the placement surface to the transport surface, damage due to the impact of the drop can be prevented. Thereafter, the work object moves on the conveyance surface via the guide chute and is subsequently conveyed in the circumferential direction along with its rotation.

  The present invention also provides a production work method for performing work necessary for production on a work object using the rotary work table. The production work method includes the following steps.

(1) Input process: An operation target is input to the mounting surface from the outside of the rotating work table.
(2) 1st conveyance process: The work target thrown into the mounting surface is conveyed with the movement of a mounting surface.
(3) Automatic transfer process: When the work object transported through the first transport process reaches a specific position, the work object is discharged from the mounting surface in conjunction with the movement of the mounting surface and the transport surface. It is automatically transferred to the transfer surface.
(4) Second transport step: The work object automatically transferred from the placement surface to the transport surface is transported along with the movement of the transport surface.
(5) Work process: At least one work is performed on the work object transported through the second transport process.

  According to the production work method of the present invention, for example, the first transporting process is simply a transporting process, so that the time required is used to dry or harden deposits on the work object. Can be reliably performed. On the other hand, since it is clear that at least the first transport process is finished, the drying and curing processes are finished, so the work object in the middle of the second transport process can be relieved. Can be taken over to the process.

  Furthermore, the following production work methods can be obtained by using a plurality of rotary worktables of the present invention. For example, three rotary worktables are arranged adjacent to each other in the work place, and a first work process for performing a predetermined work on a work target using two of the rotary worktables is executed. Then, the work object after the predetermined work is performed in the first work process is transferred from two rotary worktables to another rotary worktable, and this single rotary worktable is used. The second work process following the first work process is executed in common.

  According to such a production work method, work objects that have passed separately through two rotary work tables (production lines 1 and 2) are collectively collected on one rotary work table (production line 3). The work process here can be made common. Therefore, there is an advantage that the limited space in the work place can be effectively used.

  As described above, the present invention is extremely effective for effective utilization of work space and improvement of workability. In addition, the rotary worktable of the present invention can carry over the work object from the annular mounting surface to the transfer surface, so that the work object can be transported and produced while effectively utilizing the space. Suitable for the intended use.

  Further, according to the production work method using the rotary worktable of the present invention, it is possible to wait for the completion of drying or curing while transporting the work object over a certain amount of time, so that temporary storage space or the like can be reduced. It is not necessary and the space in the workplace can be used effectively.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a plan view showing a rotary work table 1 according to an embodiment. FIG. 2 is a longitudinal sectional view showing the structure of the rotating work table 1 in detail. The rotating work table 1 is mainly configured such that a lower rotating plate 4 and an upper rotating plate 6 having an annular shape (a donut shape) are sequentially stacked on a base plate 2 having a disk shape. The center points of the base plate 2, the lower rotating plate 4, and the upper rotating plate 6 are positioned on one vertical line. The rotary worktable 1 has a plurality of legs 8 provided on the lower surface of the base plate 2, and the rotary worktable 1 is installed on the floor surface of a work place (not shown) via the legs 8. In addition, the aspect by which the caster (leg cart) was provided in the lower end of the leg 8 may be sufficient.

  The base plate 2 located at the lowermost layer has the largest outer diameter, and then the outer diameter becomes smaller in the order of the lower rotating plate 4 and the upper rotating plate 6. For this reason, when viewed in the radial direction, there is an appropriate distance between the outer edge of the base plate 2 and the outer edge of the lower rotating plate 4 and between the outer edge of the lower rotating plate 4 and the outer edge of the upper rotating plate 6. A space having a width is secured.

  When viewed in the height direction, an appropriate size (height) is provided between the base plate 2 and the lower rotating plate 4 on the base plate 2 and between the lower rotating plate 4 and the upper rotating plate 6 over the entire circumference. Space is secured. Note that the height from the upper surface of the base plate 2 to the lower surface of the lower rotating plate 4 is smaller than the height from the upper surface of the lower rotating plate 4 to the lower surface of the upper rotating plate 6.

  A ring-shaped rotating rail 10 is attached to the upper surface of the base plate 2. The rotating rail 10 has a structure in which a movable part that is rotatable along this part is combined with a ring-shaped part that serves as a base, and a ball bearing is interposed therebetween (for example, a commercially available metal product). Pallet stand, product name: “Mawar (registered trademark)”). Such a rotating rail 10 has a function of guiding the load in a rotatable manner.

  An annular loading plate 12 is attached to the upper surface of the rotating rail 10, and the lower rotating plate 4 is supported by the rotating rail 10 via the loading plate 12. The loading plate 12 has substantially the same outer diameter as that of the rotating rail 10. The upper stage rotating plate 6 positioned above the lower stage rotating plate 4 is supported by the lower stage rotating plate 4 via, for example, four support columns 14. In this state, the lower rotating plate 4 and the upper rotating plate 6 are mutually restrained. The center point of the rotating rail 10 is positioned on the same vertical line as the positions of the center points of the base plate 2 and the lower rotating plate 4. For this reason, when the lower rotating plate 4 is rotated by being guided by the rotating rail 10, the upper rotating plate 6 is also rotated integrally therewith.

  The rotary work table 1 has a circular table 16 at the center position. The table 16 includes a top plate 16a and four support columns 16b that support the table 16a. The four struts 16b are installed on the upper surface of the base plate 2 via, for example, the bottom plate 16c. On the other hand, circular openings 4a and 6a are formed at the centers of the lower rotating plate 4 and the upper rotating plate 6, respectively. The column 16b of the table 16 extends from the upper surface of the base plate 2 to the upper side of the upper rotating plate 6 through the openings 4a and 6a. The outer diameter of the table 16 is slightly larger than the inner diameter of the opening 6a of the upper rotary plate 6. In addition, the opening part of the same shape is formed also about the loading board 12 (a code | symbol is not shown). The table 16 is fixed together with the base plate 2. Therefore, even when the lower rotating plate 4 and the upper rotating plate 6 rotate together, the table 16 remains stationary together with the base plate 2.

  The rotating work table 1 includes a drive unit 18 for automatically rotating the lower rotating plate 4 and the upper rotating plate 6. The drive unit 18 is located below the lower rotating plate 4 and outside the opening 4a in the radial direction. A motor 20 is installed in the drive unit 18, and the motor 20 is attached to the lower surface of the base plate 2 with its output shaft oriented vertically upward. The base plate 2 is formed with a rectangular opening 2a through which the output shaft of the motor 20 passes, and a drive gear 22 (or drive pulley) is attached to the output shaft. The drive gear 22 is positioned between the upper surface of the base plate 2 and the lower surface of the lower rotating plate 4.

  In the drive unit 18, two tension pulleys 24 are installed on the base plate 2 at a position closer to the rotating rail 10 than the drive gear 22. These tension pulleys 24 are located symmetrically on the base plate 2 with a straight line (imaginary line) formed by connecting the output shaft of the motor 20 and the center point of the rotating rail 10 interposed therebetween.

  An endless toothed belt 26 is wound between the drive gear 22 and the rotating rail 10. The toothed belt 26 has teeth formed on the inner peripheral side thereof, and the individual teeth mesh with the periphery of the drive gear 22 and are in close contact with the outer surface of the rotating rail 10 by frictional force. Further, the toothed belt 26 is sandwiched between the drive gear 22 and the rotating rail 10 by two tension pulleys 24 from the outside. As a result, an appropriate tension is applied to the toothed belt 26 and adhesion between the toothed belt 26 and the outer surface of the rotating rail 10 is enhanced. Only the movable parts are exposed on the outer surface of the rotating rail 10.

  When the motor 20 is driven in this state, the toothed belt 26 travels while meshing with the drive gear 22. Along with this traveling, the toothed belt 26 rotates the movable parts of the rotating rail 10 with frictional force, so that the lower rotating plate 4 and the upper rotating plate 6 installed thereon rotate around the center point. However, only the lower rotating plate 4 and the upper rotating plate 6 rotate, and the other base plate 2 and table 16 remain stationary. In this embodiment, the rotation direction of the lower rotating plate 4 and the upper rotating plate 6 is counterclockwise as viewed in FIG.

Furthermore, the other structure which the rotary worktable 1 has is demonstrated.
The rotary work table 1 includes a plurality of transport plates 30 installed on the upper rotary plate 6. These conveying plates 30 are arranged at equal intervals (constant angle) along the peripheral edge of the upper rotating plate 6 and the total number thereof is 60, for example. Each carrier plate 30 has a mounting surface on the top surface on which electronic components and the like can be stacked. These conveying plates 30 also rotate together with the rotation of the lower rotating plate 4 and the upper rotating plate 6. In FIG. 1, only some of the transport plates 30 are denoted by reference numerals in order to prevent complication. Further, in the vicinity of the drive unit 18, the lower rotating plate 4 and the upper rotating plate 6 are shown broken, and the conveyance plate 30 is not shown in the broken portion. The conveyance plate 30 will be further described later.

  The rotary work table 1 includes a cam blade 40 installed on the base plate 2. The cam blade 40 is located on the opposite side (180 ° opposite direction) of the drive unit 18 when viewed in the circumferential direction. As shown in FIG. 2, the cam blade 40 passes from above the base plate 2 over the lower rotating plate 4 and extends horizontally toward the center point, and its tip is at a position below the upper rotating plate 6. It has entered the area inside the outer edge. The base end portion of the cam blade 40 is fixed to the base plate 2 via a bracket 44.

  Further, the rotary work table 1 includes a guide chute 42 installed together with the cam blade 40. When viewed in the height direction, the guide chute 42 is located between slightly below the upper surface of the upper rotating plate 6 and slightly above the upper surface of the lower rotating plate 4, and is inclined downward in the circumferential direction within this range. It has a guide surface. Further, the guide chute 42 has a width sufficient to fill a space between the outer edge of the upper rotating plate 6 and the outer edge of the lower rotating plate 4 in the radial direction. The cam blade 40 and the guide chute 42 will be further described later.

  FIG. 3 is a partial longitudinal sectional view of the rotary work table 1 showing the transport plate 30 in more detail. The conveying plate 30 has an L-shaped longitudinal section (a shape obtained by rotating the L-shape by 90 °). On the upper side of the upper rotating plate 6, the transport plate 30 extends horizontally, and the tip thereof faces the center point of the upper rotating plate 6. The conveying plate 30 is bent downward from a position slightly outside the outer edge of the upper rotating plate 6, and a round bar-like driven member 32 is attached to the lower end thereof.

  As shown in FIG. 3, a protection plate 34 is installed on the upper surface of the upper rotation plate 6, and the outer diameter of the protection plate 34 is slightly larger than that of the upper rotation plate 6. For this reason, the protection plate 34 slightly protrudes from the outer edge of the upper rotating plate 6, and a hinge 36 is installed on the protruding portion. The hinge 36 has a posture in which its axis is oriented horizontally. In the hinge 36, one sheet metal that rotates about its axis is fixed to the lower surface of the protection plate 34, and the other sheet metal is fixed to a portion where the conveying plate 30 hangs down.

  In its free state, the transport plate 30 is stationary with the portion located above the upper rotation plate 6 (protection plate 34) being held in a horizontal posture. In this state, when the conveying plate 30 receives some force from the outside, as shown by a two-dot chain line in FIG. 3, the conveying plate 30 is displaced (rotated) so as to be lifted and inclined from the upper rotating plate 6. At this time, the portion where the conveying plate 30 hangs is displaced (rotated) so as to wrap around the upper rotating plate 6.

  FIG. 4 is a longitudinal sectional view showing a state in which the transport plate 30 is displaced using the cam blade 40 described above. FIG. 5 is a plan view showing the same state as FIG. As shown in FIGS. 4 and 5, the driven member 32 of the conveying plate 30 contacts the tip of the cam blade 40 at the place where the cam blade 40 is installed as viewed in the circumferential direction of the rotary work table 1. . In the present embodiment, a mechanism is employed in which the driven member 32 is brought into contact with the tip of the cam blade 40 so that an external force acts to displace the conveying plate 30. This will be described in more detail below.

  As shown in FIG. 5, the distal end portion of the cam blade 40 has a tapered (mountain shape) edge, and this edge overlaps the region in which the driven member 32 moves. For this reason, the driven member 32 is caught by the edge of the front-end | tip part in the installation position of the cam blade 40, while each conveyance board 30 moves to the circumferential direction with rotation of the lower stage rotating plate 4 and the upper stage rotating plate 6. FIG. At this time, as the transport plate 30 moves, the edge relatively bites into the center direction, so that the driven member 32 is gradually guided toward the center along the edge. Thereby, the conveying plate 30 is displaced on the upper surface of the upper rotating plate 6 so as to gradually increase the inclination angle.

  The displacement amount (inclination angle) of the conveying plate 30 is maximized at the moment when the driven member 32 passes through the tip (edge vertex) of the cam blade 40, and the displacement amount gradually decreases after passing through the tip. Thereafter, the transport plate 30 returns to the original posture along with the movement, and the driven member 32 moves away from the tip of the cam blade 40.

  As described above, when the conveyance plate 30 is inclined at the place where the cam blade 40 is installed, an object (for example, an electronic component) placed on the placement surface (upper surface) slides down along the inclination, and the upper rotating plate 6 It is discharged to the outside in the radial direction. The discharged object is received by the guide chute 42 and further guided in the circumferential direction along the inclination. Then, the object is received on the upper surface of the lower rotating plate 4 via the guide chute 42 and is conveyed in the circumferential direction along with the rotation.

  6 is a cross-sectional view of the cam blade 40 and the guide chute 42 taken along line VI-VI in FIG. As shown in FIG. 6, the guide chute 42 is fixed to the cam blade 40 via a mounting plate 46. The guide chute 42 extends from the mounting position of the cam blade 40 while being inclined downward in the rotational direction of the lower rotary plate 4 and the upper rotary plate 6. The lower end portion of the guide chute 42 is narrowed in a tapered shape in accordance with the curvature of the lower rotating plate 4.

  The above is the description of the configuration of the rotary worktable 1 and its main operation. Next, a production work method performed using the rotary work table 1 of the present embodiment will be described.

[First working example]
FIG. 7 is a layout diagram showing an example of a production work method (first work example) performed using the rotary work table 1. In this first work example, five workers A to E are arranged so as to surround the rotary work table 1. Among these, the arrangement of the worker A corresponds to a place where the opening of the cam blade 40 is opened by about 90 ° when viewed in the circumferential direction of the rotary work table 1. The other workers B to D are arranged at appropriate intervals in the counterclockwise direction from the worker A, and the last worker E is the cam blade 40 as viewed from the worker A in the counterclockwise direction. It is arranged in front of the installation location. In FIG. 7, reference numerals are given only to portions necessary for the description, and illustrations of portions that have already been described and are not significantly related to the description are omitted. Hereinafter, the work performed by the workers A to E and the progress of each process will be described in order.

S1: Input process Worker A inputs, for example, a semi-finished product of an electronic component as an object to be produced. The place where the semi-finished product is put is the upper surface (mounting surface) of the transport plate 30 close to the arrangement of the worker A. Preferably, one semi-finished product is put into one transport plate 30, but two or more semi-finished products may be put into one transport plate 30 at a time.

S2: 1st conveyance process The input semi-finished product is conveyed with it mounted on the mounting surface of the conveyance board 30 with rotation of the lower stage rotation board 4 and the upper stage rotation board 6. FIG. The semi-finished product is simply transported through the section from the place where it is first introduced to the place where the cam blade 40 is installed. As described above, the worker A is arranged at an opening of about 90 ° in the counterclockwise direction from the installation location of the cam blade 40. Therefore, the conveyance plate 30 on which the semi-finished product is placed is installed at the installation location of the cam blade 40. It will go through the section of about 270 degrees in the counterclockwise direction until reaching.

S3: Automatic transfer process When the conveying plate 30 on which the semi-finished product is placed reaches the installation location of the cam blade 40, the conveying plate 30 is inclined as described above to drop the semi-finished product. The dropped semi-finished product is transferred to the upper surface of the lower rotating plate 4 through the guide chute 42.

S4: Second conveying step The semi-finished product transferred to the upper surface of the lower rotating plate 4 is further conveyed in the circumferential direction along with the rotation. The conveyance destination from here is a place where the next worker B is arranged. Since the position of the worker B is located at a position that is farther counterclockwise than the previous worker A, the semi-finished product transferred to the upper surface of the lower rotating plate 4 is the place where the previous worker A is disposed. To reach the place where the worker B is located. Therefore, the semi-finished product makes one round counterclockwise when viewed from the position where it is first introduced, and then is delivered to the next process performed by the worker B at a position further ahead. Thus, in this embodiment, the conveyance distance of a semi-finished product can be ensured longer than the physical space | interval of the worker A and the worker B.

S5: 1st process The worker B performs the work of the next process with respect to the semi-finished product conveyed to the arrangement | positioning location. Note that a part of a series of processes necessary for completion of the electronic component (for example, a process for performing some processing on the semi-finished product) is assigned to the work content performed by the worker B. At this time, the worker B can perform the work by appropriately transferring the target semi-finished product onto the base plate 2. Since the base plate 2 is fixed as described above, the semi-finished product does not flow here, and the worker B can settle down and proceed with work carefully and accurately.

  Then, when the worker B performs necessary work, the semi-finished product after the work is returned to the lower rotating plate 4 again. Thereafter, the semi-finished product is further conveyed to the next process as the lower rotating plate 4 rotates. The next step is performed at the location where worker C is located downstream of worker B.

S6: Second Step Similarly, the worker C performs the work of the next step on the semi-finished product that has been transported to the place of placement. Here again, the operator C can perform work by appropriately transferring the target semi-finished product onto the base plate 2. When the worker C performs a necessary work, the semi-finished product after the work is transported to the next process as the lower rotating plate 4 rotates.

S7: Third Step Subsequently, similarly, the operator D performs the following operation on the semi-finished product that has been transported to the placement location. Here again, the operator D can perform work by appropriately transferring the target semi-finished product onto the base plate 2. When the worker D performs a necessary work, the semi-finished product after the work is further transported to the next process as the lower rotating plate 4 rotates.

S8: Fourth Step Worker E performs the next step of work on the semi-finished product that has been transported to the placement location. In the work example shown in FIG. 7, a simple work is performed in which the worker E moves the semi-finished product from the rotary work table 1 to another place (next process).

  According to the production work method using the rotary workbench 1 of the present embodiment, a production line can be constructed only by arranging a plurality of workers around the rotary workbench 1. Compared with a conveyor-type production line arranged in a straight line, the required area can be kept small.

  Moreover, about the semi-finished product in the middle of 1st conveyance process S2, if the rule which none of workers B-C touch is predetermined, it will use the time required for this 1st conveyance process S2, and will use the time required for this first process. It is possible to perform a drying process or a curing process on the applied material (for example, an adhesive or a curing agent) attached in (1). Furthermore, if the rotation speed of the motor 20 is adjusted and the time required for the first transport step S2 is appropriately set, it is possible to ensure the drying time and the curing time according to the physical properties of the coated material. In this case, the time required for the second transport step S4 can be secured as a margin for the drying time and the curing time.

  On the other hand, the drying process and the curing process have already been completed for the semi-finished product falling on the lower rotating plate 4 through the first transport process S2. For this reason, the worker B (or the workers C and D) who executes the next process simply needs to pick up the semi-finished products flowing on the lower rotating plate 4 in order. Therefore, the worker B (or the workers C and D) does not need to identify each of the semi-finished products that can be worked, and does not have to stack the semi-finished products somewhere before performing the work. In this case, if a sufficient gap is secured so that the semi-finished product can pass under the guide chute 42, even if the semi-finished product passes in front of the operator B, the semi-finished product is 1 Since it goes around and returns again, even if the worker B misses the semi-finished product, the order of the production line is not particularly disturbed.

  In addition, in the production work method using the rotary work table 1 of the present embodiment, the workers B to D can share work (same process) having the same content. In this case, since the workers B to D appropriately pick up the semi-finished product flowing on the lower rotating plate 4 and perform the work, and hand it over to the next process performed by the worker E. The workers C and D do not need to wait for the work of the previous process to be completed, and the production efficiency can be improved accordingly.

  Further, in the rotary work table 1 of the present embodiment, the table 16 is only installed at the center position, and the driving unit 18 that rotates the lower rotating plate 4 and the upper rotating plate 6 is installed outside the center. ing. For this reason, in the central position (table 16) of the rotating work table 1, the vacant space in the center is effective by installing lighting equipment and processing equipment, air conditioning ducts, suction ducts, production accessory equipment, etc. necessary for production work. It is possible to improve the workability in each process.

  Furthermore, the rotating work table 1 of the present embodiment is configured to transmit this power by a simple and inexpensive mechanism such as the toothed belt 26 and the rotating rail 10 by using the motor 20 as a drive source. Cost can be reduced.

  Further, the rotating work table 1 of the present embodiment is configured such that the lower rotating plate 4 and the upper rotating plate 6 are arranged in a circular shape (doughnut shape) with different diameters and are automatically overlapped using these rotations. Since the product (semi-finished product) is provided with a mechanism for transferring from the upper rotating plate 6 to the lower rotating plate 4, the entire length of the transport path can be secured longer than one turn of each rotating plate 4, 6. Thereby, even if the installation area of the rotary work table 1 is reduced, the length necessary for the production line can be sufficiently secured, and the space efficiency in the work place is further increased.

[Second working example]
Next, a second work example of the production work method using the rotary work table 1 will be described. In the first work example described above, a certain number of processes are digested using a single rotary workbench 1, but in the second work example, a larger number of processes using a plurality of rotary worktables 1 are used. Can be digested.

  For example, three rotary worktables (identified by reference numerals 1A, 1B, and 1C in the text) are arranged adjacent to each other, and two of these rotary worktables 1A and 1B are used to perform steps 1 and 2. Shall be executed. Then, the remaining one rotary work table 1C is used to execute the step 3.

  According to the second work example, semi-finished products that have undergone the same steps 1 and 2 in the two rotary work tables 1A and 1B can be shared by the single rotary work table 1C in the next step 3. For this reason, it is not necessary to connect the individual production lines to the two rotary work platforms 1A and 1B, so that the installation space can be reduced accordingly.

  Further, in the three rotary work platforms 1A, 1B, and 1C, even if the two rotary work tables 1A and 1B handle different processes and different types of products, the next process that follows this is one rotation. If it can be executed in common on the work table 1C, the installation space can be similarly reduced.

  Furthermore, when it is necessary to install expensive work equipment on the production line, for example, such expensive equipment is installed on the common rotating workbench 1C and shared, thereby minimizing capital investment. Since it can suppress, it can contribute greatly to the manufacturing cost reduction.

  The present invention is not limited to the embodiments described above, and can be implemented with various modifications. For example, details such as the size and height of the rotating workbench 1 can be appropriately changed in accordance with the space of the work place and the contents of the production process.

  About the conveyance board 30 of one Embodiment, this can also be arranged in the circumferential direction at an equal interval, and you may change a width | variety and length according to a target object.

  Further, the mechanism for automatically transferring the object from the upper stage to the lower stage is not limited to the mechanism that uses the conveyance plate 30, for example, the push rod is operated using an air cylinder or the like, and the object is dropped by its power. May be.

  In one embodiment, upper and lower two-stage rotating plates are used, but rotating plates may be stacked in three or more stages. In this case, a mechanism for automatically transferring the object from the uppermost stage to the lower stage and further to the lower stage may be provided individually.

  In one embodiment, the lower rotating plate 4 and the upper rotating plate 6 are connected to each other and rotate integrally. However, they may be rotated by separate drive sources. . In this case, the rotational speed and the rotational direction of the two may be different from each other.

  Moreover, it replaces with the table 16 of one Embodiment, a post etc. are installed in the center position of the rotation worktable 1, and a jig is equipped, or a display apparatus etc. is installed and the information regarding a production process is displayed. You can also.

  In addition, the shapes and structures of members, parts, and the like mentioned in the embodiment are merely preferred examples, and it goes without saying that the present invention can be implemented by appropriately modifying these.

It is the top view which showed the rotary worktable 1 of one Embodiment. It is the longitudinal cross-sectional view which showed the structure of the rotating work table in detail. It is a partial longitudinal cross-sectional view of the rotary worktable which showed the conveyance board in detail. It is the longitudinal cross-sectional view which showed the state which displaced the conveyance board using the cam blade. It is the top view which showed the same state as FIG. It is sectional drawing which follows the VI-VI line in FIG. It is the layout which showed the 1st work example of the production work method performed using a rotary worktable.

Explanation of symbols

1 Rotating work table 2 Base plate 4 Lower rotating plate (second carrier)
6 Upper rotating plate (first carrier)
10 Rotating rail (Rotation guide)
16 Table 18 Drive unit 20 Motor (drive source)
22 Drive gear 24 Tension pulley 26 Toothed belt (Transmission member)
30 Conveying plate 32 Follower member 36 Hinge (connecting member)
40 Cam blade (transfer mechanism, external force applying member)
42 Guide chute (transfer mechanism)

Claims (6)

A first transport that has an annular mounting surface on which a work object that is input from the outside can be loaded, and that transports the work object in the circumferential direction by rotating the mounting surface around a predetermined center point. Body,
A transfer mechanism for transferring the work object conveyed in the circumferential direction along with the rotation of the placement surface to discharge the work object to the outside of the placement surface at a specific position fixed with respect to the center point;
It has an annular conveyance surface formed outside the placement surface as viewed from the center point, receives the work object discharged by the transfer mechanism at the conveyance surface, and in this state the conveyance surface is A rotating work table comprising: a second transport body that transports a work object in a circumferential direction outside the mounting surface by rotating around a center point. A circular base plate that can place multiple workers around it,
An annular lower rotating plate, which is rotatably installed on the base plate via an annular rotation guide, and has a work surface transport surface formed on the upper surface, and an open central portion of the work surface.
A drive source installed on the base plate at a position outside the opening of the lower rotating plate;
A transmission member that rotates the lower rotating plate together with the rotation guide by transmitting power of the drive source to the rotation guide;
It is installed in a position spaced apart from the lower rotating plate and connected to the lower rotating plate so that it rotates together with the lower rotating plate and has an outer diameter set smaller than the lower rotating plate. An annular upper rotating plate with an opening,
A plurality of transport plates having a mounting surface on which work objects to be loaded from the outside of the base plate can be stacked, arranged in a row along the outer peripheral edge of the upper rotating plate;
A plurality of the conveying plates are individually connected to the upper rotating plate, and the conveying plate is inclined downwardly toward a stationary position along the upper surface of the upper rotating plate and the outside of the upper rotating plate. A connecting tool that is displaceably supported between the inclined position and
When it is integrally connected to the conveying plate at a position below the outer edge of the upper rotating plate and above the lower rotating plate, and when receiving an external force inward from the outer edge of the upper rotating plate at this position A driven member for displacing the transport plate from the stationary position toward the inclined position;
The conveyance plate is provided at a specific position on the peripheral edge of the base plate and relatively contacts a driven member of the conveyance plate that moves in the circumferential direction as the upper rotating plate rotates at the specific position. A rotating worktable comprising: an external force applying member that applies an external force inward from the outer edge of the upper rotating plate to the driven member. The rotary workbench according to claim 2,
A rotating work table further comprising a guide chute installed below the upper rotating plate at the specific position together with the external force applying member and inclined downward in the rotation direction of the lower rotating plate. In the rotating workbench according to claim 2 or 3,
The rotating work table further comprising a table installed inside the rotation guide on the base plate through the openings of the lower rotating plate and the upper rotating plate. In a production work method for performing work necessary for production on a work object using the rotary worktable according to any one of claims 1 to 4,
A loading process for loading a work object on the mounting surface from the outside of the rotating workbench;
A first transport step for transporting the work object thrown into the mounting surface according to the movement of the mounting surface;
When the work object conveyed through the first conveyance process reaches the specific position, the work object is discharged from the placement surface in conjunction with the movement of the placement surface and the conveyance surface, and is transferred to the conveyance surface. An automatic transfer process for automatic transfer;
A second transfer step of transferring the work object automatically transferred from the placement surface to the transfer surface along with the movement of the transfer surface;
A production work method comprising: a work process for performing at least one work on a work object transported through the second transport process. In a production work method for performing work necessary for production on a work object using the rotary worktable according to any one of claims 1 to 4,
Three rotating work tables are arranged adjacent to each other in a predetermined work place, and each of the first work steps for performing a predetermined work on a work object using two of the rotating work tables is performed.
The work object after the predetermined work is performed in the first work process is transferred from the two rotary worktables to the other rotary worktable, and the one rotary worktable is moved. A production work method using the second work process following the first work process in common.

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