Tray Optional Equipment

Abstract

To provide an option device for tray, capable of rotating a lunch box (a tray) by 90 degrees or 180 degrees according to the layout or the like of a factory on the user side.SOLUTION: An option device for tray includes belt conveyors 6, 33 for delivering a rectangular lunch box 50 (a tray) flowing from upstream side to downstream side; an optical sensor 47 for detecting the lunch box 50 arriving at the belt conveyors 6, 33; lunch box holding plates 25a, 25b holding the lunch box 50 from both sides after detection by the optical sensor 47; and an enclosure 26 and a motor M3 rotating the lunch box 50 held with the lunch box holding plates 25a, 25b by 90 degrees or 180 degrees. The lunch box holding plates 25a, 25b, after the lunch box 50 is rotated by 90 degrees or 180 degrees, are structured so as to be separated from the lunch box 50 and so that the rotated lunch box 50 is delivered to the downstream side with the belt conveyors 6, 33.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an optional tray device that can rotate a lunch box (tray) containing rice by 90 or 180 degrees depending on the layout of the factory in which it is installed and the way in which the side dishes are placed, and further allows the lunch boxes (trays) to be arranged in two rows. [Background technology]

[0002] Conventionally, a device has been proposed that automatically supplies rice and side dishes to a lunch box (tray) (Patent Document 1). In this device, the lunch box is placed on a belt conveyor, and after first supplying rice to the lunch box, the lunch box moves to a side dish supply area by the belt conveyor, and in the side dish supply area, various side dishes are automatically supplied to predetermined locations (for example, two locations) of the lunch box.

[0003] Alternatively, rice may be automatically supplied to the lunch boxes by a rice supplying device, but in some factories, workers may line up along a conveyor and place the prepared foods into the lunch boxes by hand, or a work robot may place the prepared foods into the lunch boxes. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2019-218062 A Summary of the Invention [Problem to be solved by the invention]

[0005] According to the device of Patent Document 1, the lunch box moves on a linear conveyor belt, and rice and side dishes are automatically supplied to the lunch box by a side dish supply device, so there is no particular problem.

[0006] However, after rice is dispensed into the lunch boxes by the rice dispenser, the lunch boxes are usually transported downstream by a conveyer belt. For example, in a user's factory, when multiple workers line up along the conveyer belt and manually dispense prepared foods into the lunch boxes, work efficiency may be poor depending on whether the workers are lined up on the left or right side of the conveyer belt, depending on their position in relation to the area where prepared foods are dispensed into the lunch boxes.

[0007] Alternatively, in a user's factory, multiple workers may line up on both sides of a conveyor belt to put prepared food into lunch boxes, or the layout of the factory may vary in terms of the location of the prepared food dispenser, the location of the work robot, etc., and work efficiency may be poor due to the relationship with the prepared food insertion area in the lunch box.

[0008] Therefore, the present invention has been made in consideration of the above-mentioned problems in the conventional art, and provides an optional tray device that can rotate a tray (lunch box) containing rice by 90 degrees or 180 degrees depending on the layout of the factory in which it is installed, the position of the prepared food dispenser, the placement of workers, the placement of work robots, etc.

[0009] It also provides an optional tray device that allows trays (lunch boxes) to be arranged in two rows. [Means for solving the problem]

[0010] First, in order to achieve the above-mentioned object, the present invention is configured with a tray optional device comprising a conveyor means for conveying trays flowing from upstream to the downstream side, a pre-detection means for detecting the trays that have arrived at the conveyor means with a sensor, a tray clamping means for clamping the trays from both sides after they have been detected by the pre-detection means, and a rotation means for rotating the trays clamped by the tray clamping means by 90 degrees or 180 degrees, wherein the tray clamping means is separated from the trays after the rotation means has rotated the trays by 90 degrees or 180 degrees, and the trays are transported downstream by the conveyor means.

[0011] The tray is, for example, a lunch box without a lid, and may be a square (e.g., rectangular) lunch box (50). The conveyor means may be, for example, a belt conveyor (6) and a belt conveyor (33). The front detection means may be, for example, an optical sensor (47). The tray clamping means may be, for example, lunch clamping plates (25a, 25b), a motor (M2) for driving them, and a drive mechanism (horizontal plate (18), arm (23a, 23b), shaft (19), etc.) for driving the lunch clamping plates in the approaching and separating directions. The rotation means may be, for example, a motor (M3) for rotating the tray (e.g., lunch box) clamped by the tray clamping means by 90 degrees or 180 degrees, a rotating frame (15), a housing (26), etc. The above-mentioned tray clamping means moving away from the tray (lunch box) after rotation includes not only moving away parallel to the side of the tray (lunch box) but also moving away upward. With this configuration, the tray clamping means can rotate the tray (lunch box) flowing from upstream by 90 degrees or 180 degrees, and then the rotated tray (lunch box) can be transported downstream by the conveyor means. Therefore, on the downstream side, it is possible to select whether to rotate the tray (lunch box) by 90 degrees or 180 degrees depending on, for example, the arrangement of the workers, the arrangement of the work robot, or the layout of the side dish input section, which is a great advantage for the user.

[0012] Secondly, the tray clamping means is provided with a clamping means vertical movement mechanism, and when the rotation means rotates the tray by 90 degrees, the tray clamping means is moved upward by the clamping means vertical movement mechanism so as not to interfere with the transport of the tray, and is configured as an optional device for the tray described above in claim 1.

[0013] The clamping means vertical movement mechanism can be configured, for example, by a mechanism for driving the tray clamping means in the vertical direction, for example, a slide plate (9) supporting the tray clamping means, a shaft (8) along which the slide plate (9) slides in the vertical direction, a circular crank plate (27) for driving the slide plate (9) up and down, and a motor (M4) for driving the circular crank plate (27). The tray clamping means flows from upstream to downstream so that the longitudinal direction of the tray (lunch box) is parallel to the direction of travel, and the tray clamping means clamps the longitudinal direction of the tray (lunch box) from both sides. If the tray (lunch box) is rotated 90 degrees while clamping it, the tray clamping means will hinder the progress of the lunch box. In this case, the clamping means is moved upward by the clamping means vertical movement mechanism. With this configuration, the user can easily select whether to rotate the tray (lunch box) 90 degrees or 180 degrees.

[0014] Thirdly, a conveyor means is provided which conveys square trays flowing from upstream to the downstream side, and a two-row parallel arrangement means for the trays on the conveyor means, the two-row parallel arrangement means being provided with a parallel movement means, a moving plate driving means which moves the parallel movement means left or right relative to the traveling direction of the trays, and a rear detection means which detects the trays flowing from upstream with a sensor, and when the rear detection means detects the tray, the moving plate driving means abuts against the side of the tray flowing from upstream and moves the parallel movement means alternately left or right, thereby lining up the trays in two rows, and the trays aligned in two rows are transported downstream by the conveyor means, and is configured as a tray optional device.

[0015] The two-row parallel arrangement means can be configured, for example, by a two-row parallel arrangement device (3). The parallel movement means can be configured, for example, by a parallel movement plate (42). The moving plate driving means can be configured, for example, by a male screw (39) provided in a horizontal housing (38) on the conveyor means, a slider (40) screwed into the male screw (39), the parallel movement plate (42) provided on the slider (40), and a motor (M6) that drives the male screw (39). The rear detection means can be configured, for example, by an optical sensor (51). With this configuration, when a tray (lunch box) flows, the moving plate driving means first moves the tray (lunch box) to the left, and the next tray (lunch box) flows to the right, so that the trays (lunch boxes) can be arranged in two rows on the conveyor means. Therefore, the trays (lunch boxes) arranged in parallel in two rows can then be sent downstream by a conveyor means, so that the trays (lunch boxes) can be sent in two rows downstream depending on the placement of workers, the placement of work robots, or the layout of the prepared food input area, which is of great benefit to the user.

[0016] Fourthly, the two-row parallel means is provided with a parallel means vertical movement mechanism, and the two-row parallel means is positioned above where the parallel movement means does not interfere with the transport of the tray by the parallel means vertical movement mechanism, and when the tray is moved leftward or rightward, the parallel movement means is lowered by the parallel means vertical movement mechanism to a position below where it can abut against the side of the tray, which is configured by the optional device for the tray described in the third aspect.

[0017] The parallel means vertical movement mechanism can be configured, for example, by a mechanism for driving the parallel movement means in the vertical direction, such as a slide plate (36) supporting the parallel movement means, a shaft (35) along which the slide plate (36) slides in the vertical direction, a circular crank plate (44) for driving the slide plate (36) up and down, a motor (M7) for driving the circular crank plate (44), etc. With this configuration, since the parallel movement means is usually located at an upper position where it does not interfere with the transport of the trays (lunch boxes), it is possible to directly flow the trays (lunch boxes) rotated by 90 degrees or 180 degrees to the downstream side without using, for example, a two-row parallel movement means.

[0018] Fifthly, the optional device for the tray described in the above item 1 is installed on the upstream side, and the optional device for the tray described in the above item 3 is installed on the downstream side, and the tray is rotated by 90 degrees or 180 degrees by the tray clamping means, and then moved alternately to the left or right by the parallel movement means, thereby arranging the rotated trays in two rows.

[0019] With this configuration, the trays (lunch boxes) can be rotated 90 or 180 degrees and then arranged in two rows, which can be adapted to the layout of the user's factory, providing great benefits to the user.

[0020] Sixthly, the optional device for the tray described in the above item 2 is installed on the upstream side, and the optional device for the tray described in the above item 4 is installed on the downstream side, and the tray is rotated by 90 degrees or 180 degrees by the tray clamping means, and then moved alternately to the left or right by the parallel movement means, thereby arranging the rotated trays in two rows.

[0021] With this configuration, the trays (lunch boxes) can be rotated 90 or 180 degrees and then arranged in two rows, which can be adapted to the layout of the user's factory, providing great benefits to the user.

[0022] Seventh, the conveyor means is configured by the optional tray device described in the fifth or sixth above, which is composed of a narrow first conveyor means provided with the tray clamping means and the rotating means, and a wide second conveyor means provided with the two-row parallel means.

[0023] The first conveyor means can be a belt conveyor (6), and the second conveyor means can be a belt conveyor (33). With this configuration, the first conveyor means can be made of a narrow conveyor, except for the second conveyor means that carries the lunch boxes in two rows, so that the overall space efficiency can be improved. Effect of the Invention

[0024] As described above, in the present invention, the tray clamping means can rotate the tray (e.g., lunch box) flowing from upstream by 90 degrees or 180 degrees, and then the rotated tray (lunch box) can be sent downstream by the conveyor means.Therefore, on the downstream side, it is possible to select whether to rotate the tray (lunch box) by 90 degrees or 180 degrees depending on, for example, the placement of workers, the placement of work robots, or the layout of the prepared food insertion area, which offers great benefits to the user.

[0025] Also, if the tray (lunch box) is rotated, for example, 90 degrees while being clamped, the tray clamping means would impede the movement of the tray (lunch box), so in this case, the tray clamping means is moved upward by the clamping means vertical movement mechanism. In this way, the user can easily select whether to rotate the tray (lunch box) 90 degrees or 180 degrees.

[0026] In addition, as the trays (lunch boxes) flow, they can be lined up in two rows on the conveyor means, and then the trays (lunch boxes) lined up in two rows can be flowed downstream by the conveyor means.Therefore, on the downstream side, the trays can be flowed in two rows depending on, for example, the placement of workers, the placement of work robots, or the layout of the prepared food input area, which offers great benefits to users.

[0027] In addition, since the parallel movement means is usually positioned above where it does not interfere with the transport of the trays (lunch boxes), the trays (lunch boxes) can be rotated 90 degrees or 180 degrees and flow downstream as is without using, for example, a two-row parallel movement means.

[0028] It is also possible to not use a rotating device, but to allow the trays (lunch boxes) coming from the upstream side to flow directly downstream, and to arrange the trays (lunch boxes) in two rows using a two-row parallel arrangement device. This type of configuration offers great benefits to users as an optional device depending on their circumstances.

[0029] In addition, after rotating the trays (lunch boxes) by 90 or 180 degrees, the trays (lunch boxes) can be arranged in two rows, which can be adapted to the layout of the user's factory, providing great benefits to the user.

[0030] Furthermore, except for the second conveyor means which carries the trays (lunch boxes) in two parallel rows, the first conveyor means can be constructed of a narrow conveyor, thereby improving the overall space efficiency. [Brief description of the drawings]

[0031] [Figure 1] FIG. 2 is a perspective view of an optional device for the tray according to the present invention. [Diagram 2] FIG. 2 is a side view of the device as viewed from the front side. [Diagram 3] FIG. [Figure 4] FIG. [Diagram 5] FIG. 4 is a perspective view showing a drive system in the vicinity of the lunch box clamping plate of the device. [Figure 6] 8 is a cross-sectional view showing a drive system in the vicinity of the lunch box clamping plate of the same device (cross-sectional view taken along line XX in FIG. 7). [Figure 7] FIG. 4 is a rear view showing the drive system near the lunch box clamping plate of the device. [Figure 8] FIG. 4 is a perspective view showing a drive system in the vicinity of the lunch box clamping plate of the device. [Figure 9] FIG. 4 is a partial cross-sectional view showing a drive system in the vicinity of the lunch box clamping plate of the device. [Figure 10] 10 is a partial cross-sectional view showing a drive system in the vicinity of the lunch box clamping plate of the device (cross-sectional view taken along line YY in FIG. 9). [Figure 11] FIG. 2 is an electrical block diagram of a control unit of the above device. [Figure 12] 4 is a flowchart showing an operation procedure of the above device. [Figure 13] 4 is a flowchart showing an operation procedure of the above device. [Figure 14] 4 is a flowchart showing an operation procedure of the above device. [Figure 15] 11A and 11B are explanatory diagrams illustrating the case where the lunch box of the above device is rotated by 90 degrees, in which (a) shows the state before rotation and (b) shows the state after rotation. [Figure 16] 10A and 10B are explanatory diagrams for rotating the lunch boxes of the above-mentioned device by 90 degrees, in which (c) shows the state in which the lunch boxes have been moved to the two-row parallel device, and (d) shows the state in which the lunch boxes have been moved to the left. [Figure 17] 11A and 11B are explanatory diagrams illustrating the case where the lunch box of the above device is rotated by 90 degrees, in which (a) shows the state before rotation and (b) shows the state after rotation. [Figure 18] 10A and 10B are explanatory diagrams for rotating the lunch boxes of the above-mentioned device by 90 degrees, in which (c) shows the state in which the lunch boxes have been moved to the two-row parallel device, and (d) shows the state in which the lunch boxes have been moved to the right. [Figure 19] 10A and 10B are explanatory diagrams illustrating the case where the lunch box of the above device is rotated 180 degrees, in which (a) shows the state before rotation and (b) shows the state after rotation. [Figure 20]10A and 10B are explanatory diagrams for rotating the lunch boxes of the above-mentioned device by 180 degrees, in which (c) shows the state in which the lunch boxes have been moved to the two-row parallel device, and (d) shows the state in which the lunch boxes have been moved to the left. [Figure 21] 10A and 10B are explanatory diagrams illustrating the case where the lunch box of the above device is rotated 180 degrees in the opposite direction, where (a) shows the state before rotation and (b) shows the state after rotation. [Figure 22] 10A and 10B are explanatory diagrams showing the case where the lunch boxes of the above device are rotated 180 degrees in the opposite direction, where (c) shows the state where the lunch boxes have been moved to the two-row parallel device, and (d) shows the state where the lunch boxes have been moved to the right side. [Diagram 23] 1 shows a part of the vertical drive mechanism for the parallel moving plate of the device. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0032] The optional devices for the tray according to the present invention will be described in detail below.

[0033] As shown in Figures 1 to 4, the tray option device 1 according to the present invention is composed of a rotation device 2 for lunch boxes (trays) without lids, followed by a two-row parallel arrangement device 3 for arranging lunch boxes (trays) in two rows. In Figure 1, in the traveling direction of the belt conveyor 6 (the direction of the arrow A), the upstream side of the direction of the arrow A is referred to as the "upstream" or "front", and the downstream side of the direction of the arrow A is referred to as the "downstream" or "rear", and the left and right directions when facing from the front (upstream) to the rear (downstream) are defined as the left and right in the following explanation.

[0034] The lunch box 50 is a concave rectangle without a lid, as shown in Fig. 15(a), for example, and flows from the upstream side along the central part (center line P) of the belt conveyor 6 with its longitudinal direction parallel to the direction of arrow A. The lunch box 50 has a rice input area 50a on the front side, as shown in Fig. 15(a), for example, and a large side dish input area 50b on the left side and a small side dish input area 50c on the right side, also by a partition plate, on the rear side. It is assumed that rice is input only into the rice input area 50a of the lunch box 50 by a rice supply mechanism (not shown) at the front stage.

[0035] Also, the lunch box 50 is only one example, and any shape may be used as long as it is a rectangular (square) concave tray (without a lid) with an opening on the top into which rice or side dishes are put. In the following embodiment, a rectangular lunch box 50 is described, but it is not limited to the lunch box 50 and may be the above-mentioned tray. Note that the tray may be either one with the above-mentioned partition plate inside or one without the above-mentioned partition plate. Below, a rectangular lunch box 50 without a lid will be described as an embodiment of the tray.

[0036] Furthermore, the optional tray device of the present invention is used as an option for the user in a device in which, for example, the lunch boxes are stacked on top of each other, one lunch box is removed from the stack, rice is inserted into the rice insertion area 50a, and the lunch boxes are transported sequentially on a conveyor belt.

[0037] The lunch box rotating device 2 has a housing 5 provided on the top surface of a machine frame 4, and a belt conveyor 6 is provided horizontally along the housing 5. A drive shaft 6a and a driven shaft 6b are rotatably supported in the housing 5 on the front and rear sides of the belt conveyor 6, and a belt 6c is hung horizontally between the shafts 6a and 6b. A motor M1 is provided in the housing 5 on the drive shaft 6a side (see FIG. 2), and the belt conveyor 6 can be driven in the direction of arrow A by driving the motor M1.

[0038] 5 is fixed to the housing 5, and four shafts 8, 8, 8, 8 are vertically erected at the four corners of a rectangle on the housing 5. Pipes 10, 10, 10, 10 are inserted into the four corners of a slide plate 9 made of a horizontal plate on the four shafts 8 (hereinafter, the shafts are collectively referred to as "8"), and the slide plate 9 is configured so that the pipes 10 (hereinafter, the pipes are collectively referred to as "10") can slide up and down along the four shafts 8.

[0039] A pair of arms 11, 11 are arranged horizontally above the belt conveyor 6 on the left side of the slide plate 9, and a base plate 12 is fixed between the arms 11, 11 in the center of the pair of arms 11, 11, and a motor M2 and a cylindrical motor M3 are provided on the base plate 12 (see Figures 5 and 6).

[0040] The drive shafts of the motors M2 and M3 are provided concentrically (see FIG. 10), and the drive shaft 13 of the motor M3 is connected to an outer tube 14, which protrudes downward and is fixed at its lower end to a rotating frame 15 perpendicular to the outer tube 14 (see FIG. 8). The drive shaft 16 of the motor M2 is connected to a drive shaft 17 provided concentrically within the outer tube 14 (see FIG. 10), and the lower end of the drive shaft 17 is located below the rotating frame 15 and is connected to a horizontal plate 18 below the rotating frame 15 (see FIGS. 8 and 9).

[0041] The rotating frame 15 has vertical plates 15a, 15b at both ends (see FIG. 8), and a pair of shafts 19, 19 are provided between the vertical plates 15a, 15b at the same level (see FIG. 8 to FIG. 10). A pair of upright slider plates 20a, 20b are provided on the shafts 19, 19 so as to be slidable in the approaching direction (arrows C, C' direction) and the separating direction (arrows D, D' direction) through their respective openings 20. As shown in FIG. 9, an arm 23a is provided between a rotation shaft 21a at the upper center of the upright slide plate 20a and a rotation shaft 22a at one end of the horizontal plate 18, and an arm 23b is provided between a rotation shaft 21b at the upper center of the upright slide 20b and a rotation shaft 22b at the other end of the horizontal plate 18.

[0042] Fixed plates 24a, 24a are provided on the front and rear side surfaces of the upright sliding plate 20a, and a lunch box clamping plate 25a is provided between the fixed plates 24a, 24a facing downward. Furthermore, fixed plates 24b, 24b are provided on the front and rear side surfaces of the upright sliding plate 20b, and a lunch box clamping plate 25b is provided between the fixed plates 24b, 24b facing downward opposite the lunch box clamping plate 25a (see Figures 9 and 10).

[0043] Therefore, by driving the motor M2 in the forward direction, the drive shaft 17 is rotated and the horizontal plate 18 is rotated in the direction of the arrow B (see FIG. 8) to bring the lunch clamping plates 25a, 25b closer to each other (in the direction of the arrows C, C'), and by driving the motor M2 in the reverse direction, the drive shaft 17 is reversed and the horizontal plate 18 is rotated in the direction of the arrow B' (see FIG. 8) to move the lunch clamping plates 25a, 25b away from each other (in the direction of the arrows D, D'). The lunch clamping plates 25a, 25b clamp the lunch box 50 coming from the front by moving in the approaching direction, and after rotating, move in the moving away direction to move away from the lunch box 50 (see FIG. 15(a) and FIG. 16(d)).

[0044] The arrival of lunch box 50 from the front is detected by optical sensor 47 (see Figures 1 to 3) (the reflected wave reflected by lunch box 50 is received by the light receiving portion of the sensor), and a detection signal is transmitted to control unit 48 (see Figure 11).

[0045] By driving the motor M3 in the forward direction, the outer tube 14 is rotated and the rotating frame 15 is rotated in the direction of the arrow E (see FIG. 8), and by driving the motor M3 in the reverse direction, the outer tube 14 is rotated and the rotating frame 15 is rotated in the direction of the arrow E'. The rotation angle can be changed to rotate the lunch box 50 (whose longitudinal direction is parallel to the direction of the arrow A) coming from the front by 90 degrees (see FIGS. 15 to 18) or 180 degrees (see FIGS. 19 to 22). A rotary encoder 49 is provided on the drive shaft of the motor M3 (see FIG. 10), and a signal from the rotary encoder 49 is sent to a control unit 48, which grasps the rotation angle.

[0046] Since the rotating frame 15 rotates with each of the vertical plates 15a, 15b, the lunch box holding plates 25a, 25b also rotate by 90 degrees or 180 degrees.

[0047] The rotating frame 15 and the vertical plates 15a, 15b, etc. shown in Fig. 8 are covered by the housing 26 shown in Fig. 1 and Fig. 5 (the lower part is open), and the lunch box clamping plates 25a, 25b protrude from the lower part of the housing 26. The lunch box clamping plates 25a, 25b are positioned parallel to both side edges of the upper surface of the belt conveyor 5 (see Fig. 1 and Fig. 3). The lunch box clamping plates 25a, 25b are configured to straddle the bottom plate 15c (see Fig. 8).

[0048] Further, the movement of the lunch box holding plates 25a, 25b toward and away from each other by the motor M2 and the rotation of the rotating frame 15 by the motor M3 are carried out simultaneously in parallel.

[0049] When the lunch box clamping plates 25a and 25b rotate 90 degrees, the rotating frame 15 (the housing 26) needs to move upward (away from the lunch box) to allow the lunch box to flow backward. For this reason, as shown in FIG. 6, the center of the circular crank plate 27 is connected to a joint 29 (the angle of the crank shaft 30 may change around the joint 29) on the lower surface of the slide plate 9 and to a drive shaft of a motor M4 fixed to the upper surface 7a of the gate-shaped frame 7 via a bevel gear, and a crank shaft 30 is provided between a rotating shaft 28 provided at an eccentric position of the circular crank plate 27 and the joint 29. The crank shaft 30 is inserted through an opening 7b (see FIG. 5) on the upper surface 7a of the gate-shaped frame 7 and is connected to the circular crank plate 27 below the upper surface 7a by the rotating shaft 28.

[0050] Further, a rotary encoder 52 is provided on the central axis of the circular crank plate 27 (see FIG. 7), and the control unit 48 grasps the rotation angle of the central axis.

[0051] Therefore, by driving the motor M4, the circular crank plate 27 rotates 180 degrees, and the rotating shaft 28 is positioned upward, so that the slide plate 9 rises up the shaft 8 with the tube 10, and as a result, the motor M2, the housing 26, and the lunch box clamping plates 25a, 25b rise and rise to a position that does not impede the movement of the lunch box 50 downstream, and then, only the lunch box 50 moves backward (downstream) on the belt conveyor 6. Also, by driving the motor M4, the circular crank plate 27 rotates another 180 degrees, so that the rotating shaft 28 is positioned downward, so that the slide plate 9 descends the shaft 8 with the tube 10, and as a result, the lunch box clamping plates 25a, 25b descend to a position near the upper surface of the belt conveyor 6.

[0052] Next, the two-row parallel device 3 will be described. A machine frame 31 having the same height as the machine frame 4 is provided (see FIG. 1), and a housing 32 is provided at the rear right side of the upper part of the machine frame 31 (see FIG. 3). A belt conveyor 33 is provided from the housing 32 at the same level as the belt conveyor 6 and has a width (wide) approximately twice the width (narrow) of the belt conveyor 6. Since the center line P of the belt conveyor 6 and the center line P of the belt conveyor 33 coincide with each other, the belt conveyor 33 is evenly spread in the left-right direction of the belt conveyor 6 (see FIGS. 1 and 3).

[0053] Specifically, a driving shaft 33a and a driven shaft 33b are provided from the housing 32, a frame 33c is provided between the driving shaft 33a and the driven shaft 33b, and a belt 33d is stretched between the driving shaft 33a and the driven shaft 33b to form the belt conveyor 33 (see FIG. 3). A motor M5 is provided on the driving shaft 33a, and by driving the motor M5, the belt conveyor 33 is driven in the direction of arrow A (see FIG. 1).

[0054] In addition, lunch boxes 50 are transported onto the belt conveyor 33 from the preceding belt conveyor 6, and the arrival of the lunch boxes 50 on the belt conveyor 33 is detected by an optical sensor 51 (see Figure 3) and a detection signal is sent to the control unit 48 (the reflected waves reflected by the lunch boxes 50 are received by the light receiving portion of the sensor).

[0055] In addition, a gate-shaped frame 34 is fixed to the machine frame 31 on the right side of the belt conveyor 33 (see Figure 4), and four shafts 35, 35, 35, 35 are vertically set on the upper surface 34a of this gate-shaped frame 34. A slide plate 36 is provided which is inserted into these shafts 35 (hereinafter, the shafts will be collectively referred to as "35") and slides up and down, and pipes 37, 37, 37, 37 are provided at the four corners of the slide plate 36, and the pipe 37 (hereinafter, the pipes will be collectively referred to as "37") is inserted into the shaft 35, thereby allowing the slide plate 36 to slide up and down relative to the shaft 35.

[0056] A horizontal housing 38 is provided on the slide plate 36 in the direction of the belt conveyor 33, parallel to the upper surface of the belt conveyor 33 (see Figs. 1 and 2), and a male screw 39 is axially supported in the horizontal housing 38 so as to be rotatable parallel to the horizontal housing 38 (see Fig. 2). A pulley is provided in parallel to the right end of the male screw 39, and a drive shaft of a motor M6 is connected via a timing belt (see Fig. 3). The motor M6 is fixed to the slide plate 36.

[0057] Meanwhile, a female screw is screwed into the male screw 39, and a slider 40 having the female screw is provided (so-called ball screw mechanism), and a parallel movement plate 42 parallel to the moving direction of the lunch box 50 is provided on the slider 40 via an arm 41. Therefore, by driving the motor M6 forward and backward, the male screw 39 is driven forward and backward, and the parallel movement plate 42 is moved from the center (parallel to the center line P) to the right, thereby moving the lunch box 50 to the right on the belt conveyor 33 (see FIG. 18(d)), and by moving the parallel movement plate 42 from the center to the left, the next lunch box 50 is moved to the left on the belt conveyor 33 (see FIG. 16(d)). As a result, it is possible to arrange the lunch boxes 50 coming down in two rows.

[0058] The vertical movement of the slide plate 36 is similar to the vertical movement of the rotation frame 15 . That is, a joint 43 is provided under the slide plate 36 (see FIG. 4), and as shown in FIG. 23, a drive shaft of a motor M7 is connected to the center of the circular crank plate 44 via a bevel gear (not shown), and a crank shaft 46 is provided between the joint 43 and a rotating shaft 45 provided at an eccentric position of the circular crank plate 44. When the motor M7 is driven to rotate the rotating shaft 45 by 180 degrees to be located below the circular crank plate 44, the slide plate 36 descends along the shaft 35, and the lower edge 42a of the parallel moving plate 42 approaches the upper surface of the belt conveyor 33. When the rotating shaft 45 is further rotated by 180 degrees, the rotating shaft 45 is located above the circular crank plate 44, and the slide plate 36 rises along the shaft 35. In this case, the parallel moving plate 42 moves upward (to the position in FIG. 4) so ​​as not to impede the movement of the lunch box 50.

[0059] A rotary encoder 53 is also provided on the central shaft of the circular crank plate 44, and the control unit 48 grasps the rotation angle of the central shaft.

[0060] Figure 11 shows an electrical block diagram of the control unit 48 of the present invention, and the control unit 48 is provided with, in relation to the rotating device 2, a motor M1 for the belt conveyor 6, a motor M2 for the lunch clamping plates 25a, 25b, a motor M3 for rotating the housing 26, a motor M4 for moving the lunch clamping plates 25a, 25b up and down, an optical sensor 47, and rotary encoders 49, 52, and in relation to the two-row parallel device 3, a motor M5 for the belt conveyor 33, a motor M6 for the parallel movement plate 42, a motor M7 for moving the parallel movement plate 42 up and down, an optical sensor 51, and a rotary encoder 53.

[0061] The control section 48 has a CPU, in which the operational procedures of the flowcharts shown in Figs. 12 to 14 are preprogrammed, and the control section 48 operates in accordance with the flowcharts.

[0062] The operation of the present invention will now be described. Furthermore, the lunch box 50 is the lunch box 50 shown in Figure 15(a), and, for example, in the orientation shown in Figure 15(a) (wherein a rice supply area 50a, a side dish supply area (large) 50b, and a side dish supply area (small) 50c are provided, with the rice supply area 50a facing upstream), i.e., with the longitudinal direction of the lunch box 50 parallel to the direction of arrow A, the lunch box 50 (with only rice being supplied to the rice supply area 50a) flows downstream at regular intervals from the upstream conveyor belt.

[0063] First, the case where lunch box 50 is rotated counterclockwise (in the direction of arrow E in FIG. 15(b) = counterclockwise) by 90 degrees will be described.

[0064] The control unit 48 (rotating device 2) drives motor M1 to drive the belt conveyor 6 in the direction of arrow A (see Figure 12P1) (note that the control unit 48 also drives motor M5 to drive the belt conveyor 33 in the direction of arrow A at the same speed (see Figure 13P1)), and the lunch box clamping plates 25a, 25b are lowered (see Figure 12P2) and are positioned on both side ends of the belt conveyor 6.

[0065] Thereafter, when a lunch box 50 flows from the upstream conveyor belt in the direction shown in Figure 15(a), a detection signal from the optical sensor 47 is sent to the control unit 48, and the control unit 48 detects the arrival of the lunch box 50 (see Figure 12P3), and the control unit 48 immediately drives the motor M2 to drive the lunch clamping plates 25a, 25b in the approaching direction (direction of arrows C, C') to clamp the lunch box 50 (see Figure 12P4, Figure 15(a)).

[0066] Thereafter, the control unit 48 drives the motor M3 to rotate the rotating frame 15, and therefore the housing 26, together with the lunch box clamping plates 25a and 25b, by 90 degrees in the direction of the arrow E (leftward = clockwise) (see FIG. 12P5 and FIG. 15(b)). Therefore, the lunch box 50 also rotates 90 degrees leftward, and the longitudinal direction of the lunch box 50 becomes perpendicular to the direction of the arrow A (see FIG. 15(b)).

[0067] After that, the control unit 48 drives the motor M4 to rotate the circular crank plate 27 by 180 degrees, and raises the slide plate 9 along the shaft 8 (moves away from the lunch box), resulting in raising the lunch clamping plates 25a and 25b to a position that does not interfere with the movement of the lunch box 50 (see FIG. 12P6). Then, the lunch box 50, rotated 90 degrees, moves on the belt conveyor 6 in the direction of arrow A and transfers onto the adjacent belt conveyor 33 (see FIG. 12P7 and FIG. 16(c)).

[0068] Thereafter, the control unit 48 drives the motor M3 to rotate 90 degrees in the E' direction (reverse direction) (see Figure 16(c)), and then the control unit 48 drives the motor M2 to drive the lunch clamping plates 25a, 25b in the separating direction (arrows D, D' directions) and return to their original positions (see Figure 16(d) and Figure 12P8).

[0069] The control unit 48 (rotation device 2) is not terminated (FIG. 12P 9 12), and then returns to step P1 in FIG. 12 and repeats the same operations thereafter.

[0070] Meanwhile, the control unit 48 (two-row parallel device 3) drives the motor M5 to drive the belt conveyor 33 in the direction of the arrow A (see FIG. 13P1), the parallel movement plate 42 is located in the center (see FIG. 15(a)), and the parallel movement plate 42 is in the raised position (see FIG. 13P2). Then, the control unit 48 drives the motor M6 to move the parallel movement plate 42 to the right the first time, and moves it further to the right from the position in the short side direction of the lunch box 50 rotated 90 degrees (see FIG. 13P3, FIG. 15(b)).

[0071] Thereafter, the control unit 48 drives the motor M7 to rotate the circular crank plate 44 180 degrees and position the rotation axis 45 downward, thereby lowering the slide plate 36. As a result, the lower edge 42a of the parallel moving plate 42 descends to a position close to the upper surface of the belt conveyor 33 (see FIG. 13P4).

[0072] Thereafter, the lunch box 50, rotated 90 degrees, moves onto the belt conveyor 33 (see Figure 13 "1"), and the control unit 48 detects the detection signal of the optical sensor 51 and detects that the lunch box 50 has moved onto the belt conveyor 33 (see Figure 13P5 and Figure 16(c)), and the control unit 48 drives the motor M6 to move the parallel movement plate 43 to the left (see Figure 13P6 and Figure 16(d)).

[0073] As a result, the lunch boxes 50 move to the left side (left row) on the belt conveyor 33, and then the lunch boxes 50 move in the direction of arrow A (see FIG. 13P7 and FIG. 16(d)). Then, the control unit 48 drives the motor M7 to raise the slide plate 36, thereby raising the parallel movement plate 42 (see FIG. 13P8 and FIG. 16(d)). Then, if the process is not finished (see FIG. 13P9), the process returns to step P1 in FIG. 13 and repeats the same operation.

[0074] The second time, in step P5 of FIG. 12, the control unit 48 (rotation device 2) clamps the lunch box 50 between lunch clamping plates 25a, 25b and rotates it 90 degrees in the direction of arrow E (leftward = clockwise) (see FIG. 17(b)). In step P3 of FIG. 13, the control unit 48 (two-row parallel device 3) moves the parallel movement plate 42 to the left for the second time (see FIG. 17(b)). In step P6 of FIG. 13, the control unit 48 moves the parallel movement plate 42 to the right, thereby moving the lunch box 50 to the right side (right row) (see FIG. 13P6 and FIG. 18(d)). Thereafter, the lunch box 50 moves in the direction of arrow A (see FIG. 18(d)).

[0075] Thereafter, the third (first) lunch box 50 that is sequentially conveyed from the upstream side on the belt conveyor 6 is rotated 90 degrees to the left=clockwise (see FIG. 15(b)), the third (first) lunch box 50 is moved to the left row on the belt conveyor 33 (see FIG. 16(d)), the fourth (second) lunch box 50 is rotated 90 degrees to the left=clockwise (see FIG. 17(b)), and the fourth (second) lunch box 50 is moved to the right row on the belt conveyor 33 (see FIG. 18(d)). Thus, the fifth lunch box 50 is rotated 90 degrees to the left and moved to the left row, and the sixth lunch box is rotated 90 degrees to the right and moved to the right row, and as a result, the successively conveyed lunch boxes 50 are arranged in two rows on the belt conveyor 33.

[0076] Of course, the lunch boxes 50 are moved in two rows on a belt conveyor installed following the belt conveyor 33, and for example, a number of workers are standing on both sides of the belt conveyor, and the workers can put the prepared food into the prepared food areas 50b, 50c of the lunch boxes 50. In this case, since the lunch boxes 50 flow in two rows on the belt conveyor, the workers on both sides of the belt conveyor, or the prepared food putting-in device, can work efficiently.

[0077] Next, a case where the lunch box 50 is rotated 180 degrees counterclockwise (in the direction of the arrow E in FIG. 19(b)) will be described.

[0078] The control unit 48 (rotating device 2) drives motor M1 to drive the belt conveyor 6 in the direction of arrow A (see Figure 14P1) (note that the control unit 48 also drives motor M5 to drive the belt conveyor 33 in the direction of arrow A at the same speed (see Figure 13P1)), and the lunch box clamping plates 25a, 25b are lowered (see Figure 14P2) and are positioned on both side ends of the belt conveyor 6.

[0079] Thereafter, when a lunch box 50 flows from the upstream conveyor belt in the direction shown in Figure 19(a), a detection signal from the optical sensor 47 is sent to the control unit 48, and the control unit 48 detects the arrival of the lunch box 50 (see Figure 14P3), and the control unit 48 immediately drives the motor M2 to drive the lunch clamping plates 25a, 25b in the approaching direction (direction of arrows C, C') to clamp the lunch box 50 (see Figure 14P4, Figure 19(a)).

[0080] Thereafter, the control unit 48 drives the motor M3 to rotate the rotating frame 15, and therefore the housing 26, together with the lunch box clamping plates 25a and 25b, 180 degrees in the direction of the arrow E (leftward = clockwise) (see FIG. 14P5 and FIG. 19(b)). Therefore, the lunch box 50 also rotates 180 degrees leftward (clockwise), and the longitudinal direction of the lunch box 50 becomes parallel to the direction of the arrow A (see FIG. 19(b)).

[0081] Thereafter, the control unit 48 drives the motor M2 to drive the lunch clamping plates 25a, 25b in the separating direction (the direction of the arrows D, D') to separate them from the lunch box 50 (see FIG. 14P6 and FIG. 20(c)).

[0082] Then, the lunch box 50 rotates 180 degrees, moves along the belt conveyor 6 in the direction of arrow A, and transfers onto the adjacent belt conveyor 33 (see FIG. 14P7 and FIG. 20(c)).

[0083] If the process is not completed (see P8 in FIG. 14), the control unit 48 (rotation device 2) returns to step P1 in FIG. 14 and repeats the same operations thereafter.

[0084] On the other hand, the control unit 48 (two-row parallel device 3) drives the motor M5 to drive the belt conveyor 33 in the direction of the arrow A (see FIG. 13P1), the parallel movement plate 42 is located in the center (see FIG. 19(a)), and the parallel movement plate 42 is in the upper position (see FIG. 13P2). Since the rotation direction of the housing 26 of the rotation device 2 is the direction of the arrow E (counterclockwise, clockwise), the control unit 48 drives the motor M6 to move the parallel movement plate 42 to the right the first time, and then to the right of the right longitudinal position of the lunch box 50 rotated 180 degrees (see FIG. 13P3, FIG. 19(b)).

[0085] Thereafter, the control unit 48 drives the motor M7 to rotate the circular crank plate 44 180 degrees and position the rotation axis 45 downward, thereby lowering the slide plate 36. As a result, the lower edge 42a of the parallel moving plate 42 descends to a position close to the upper surface of the belt conveyor 33 (see FIG. 13P4).

[0086] Thereafter, the lunch box 50 rotated 180 degrees moves onto the conveyor belt 33 (see Figure 13 "1"), and the control unit 48 detects the detection signal of the optical sensor 51 and detects that the lunch box 50 has moved onto the conveyor belt 33 (see Figure 13P5 and Figure 20(c)), and the control unit 48 drives the motor M6 to move the parallel movement plate 42 to the left (see Figure 13P6 and Figure 20(d)).

[0087] As a result, the lunch boxes 50 move to the left side (left row) on the belt conveyor 33, and then the lunch boxes 50 move in the direction of arrow A (see FIG. 13P7 and FIG. 20(d)). Then, the control unit 48 drives the motor M7 to raise the slide plate 36, thereby raising the parallel movement plate 42 (see FIG. 13P8 and FIG. 20(d)). Then, if the process is not finished (see FIG. 13P9), the process returns to step P1 in FIG. 13 and the same operation is repeated.

[0088] The control unit 48 (rotation device 2) for the second time, in step P5 of FIG. 14, clamps the lunch box 50 between lunch clamping plates 25a, 25b and rotates it 180 degrees in the direction of arrow E' (clockwise, counterclockwise) (see FIG. 21(b)). In step P3 of FIG. 13, the control unit 48 (two-row parallel device 3) for the second time moves the parallel movement plate 42 to the left (see FIG. 21(b) and FIG. 13P3). In step P6 of FIG. 13, the control unit 48 moves the parallel movement plate 42 to the right, thereby moving the lunch box 50 to the right side (right row) (see FIG. 13P6 and FIG. 22(d)). Thereafter, the lunch box 50 moves in the direction of arrow A (see FIG. 22(d)).

[0089] Thereafter, the third (first) lunch box 50 that is sequentially conveyed from the upstream side on the belt conveyor 6 is rotated 180 degrees to the left (clockwise) (see FIG. 19(b)), the third (first) lunch box 50 is moved to the left row on the belt conveyor 33 (see FIG. 20(d)), the fourth (second) lunch box 50 is rotated 180 degrees to the right (counterclockwise) (see FIG. 21(b)), and the fourth (second) lunch box 50 is moved to the right row on the belt conveyor 33 (see FIG. 22(d)). Thus, when the lunch box 50 is rotated 180 degrees to the left for the fifth time, it is moved to the left row, and when the lunch box 50 is rotated 180 degrees to the right for the sixth time, it is moved to the right row, and as a result, the lunch boxes 50 that are sequentially conveyed are arranged in two rows on the belt conveyor 33.

[0090] Of course, the lunch boxes 50 are moved in two rows on a belt conveyor installed following the belt conveyor 33, and, for example, workers stand on both sides of the belt conveyor and can insert side dishes into the side dish area of ​​the lunch boxes 50.

[0091] When ending (see Figures 12P9 and 14P8), the control unit 48 stops motor M1 to stop the belt conveyor 6 (see Figures 12P10 and 14P9), and at the same time stops motor M5 to stop the belt conveyor 33 (see Figure 13P10) to end the process.

[0092] After rotating the lunch boxes 50 by 90 degrees or 180 degrees using the rotation device 2, the lunch boxes 50 may be moved in a single row onto the belt conveyor 33 without using the two-row parallel arrangement device 3. In this case, the parallel movement plate 42 is located above and in a position that does not interfere with the movement of the lunch boxes 50.

[0093] Conversely, the rotation device 2 may not be used, the lunch boxes 50 pass through the rotation device 2 as is, and the two-row parallel device 3 may arrange the lunch boxes 50 in two rows.

[0094] In addition, the rotation device 2 can be used alone, or the two-row parallel device 3 can be used alone.

[0095] As described above, in the present invention, the tray clamping means (e.g., lunch clamping plates 25a, 25b) can rotate the lunch boxes 50 (trays) flowing from upstream by 90 degrees or 180 degrees, and then the rotated lunch boxes 50 (trays) can be sent downstream by the conveyor means. Therefore, on the downstream side, it is possible to select whether to rotate the lunch boxes 50 (trays) by 90 degrees or 180 degrees depending on, for example, the placement of workers, the placement of work robots, or the layout of the prepared food insertion area, and this offers great benefits to users as an optional device.

[0096] Also, if the lunch box 50 (tray) is rotated, for example, 90 degrees while being clamped, the tray clamping means (for example, lunch clamping plates 25a, 25b) will impede the progress of the lunch box 50 (tray), so in this case, the tray clamping means (for example, lunch clamping plates 25a, 25b) is moved upward by the clamping means up-down movement mechanism. In this way, the user can easily select whether to rotate the lunch box 50 (tray) 90 degrees or 180 degrees.

[0097] In addition, as the lunch boxes 50 (trays) flow, the lunch boxes 50 (trays) can be lined up in two rows on the conveyor means, and then the lunch boxes 50 (trays) lined up in two rows can be flowed downstream by the conveyor means.As a result, on the downstream side, the rotated lunch boxes can be flowed in two rows depending on, for example, the placement of workers, the placement of work robots, or the layout of the prepared food input area, etc., and this offers great benefits to users as an optional device.

[0098] Furthermore, since the parallel movement means (e.g., the parallel movement plate 42) is usually positioned above where it does not interfere with the transport of the lunch boxes 50 (trays), the lunch boxes (trays) rotated by 90 degrees or 180 degrees can be directly conveyed downstream without using, for example, a two-row parallel means.

[0099] It is also possible to allow the lunch boxes 50 (trays) flowing from the upstream side to flow directly downstream without using the rotating device 2, and align the lunch boxes 50 (trays) in two rows using the two-row aligning device 3. This configuration offers great benefits to the user as an optional device depending on the user's circumstances.

[0100] In addition, after rotating the lunch boxes 50 (trays) 90 degrees or 180 degrees, the lunch boxes 50 (trays) can be arranged in two rows, which can be adapted to the layout of the user's factory, etc., providing great benefits to the user.

[0101] Furthermore, except for the second conveyor means which arranges the lunch boxes 50 (trays) in two parallel rows, the first conveyor means can be constructed of a narrow conveyor, so that the overall space efficiency can be improved.

[0102] In the figure, 54 is an upper plate of the rotating device 2, and 55 is an upper plate of the two-row parallel device 3. [Industrial Applicability]

[0103] The optional tray device of the present invention allows the tray (lunch box) to be rotated 90 or 180 degrees, or the tray (lunch box) to be arranged side by side in two rows, and the lunch box can be rotated depending on the subsequent placement of workers and the placement of the prepared food insertion area, etc., which provides great benefits to the user. [Explanation of symbols]

[0104] 1 Tray Optional Equipment 2 Rotating device 3 2-row parallel device 6 Belt conveyor (first conveyor means) 8 Shaft 9 Slide plate 15 Rotating Frames 25a,25b Lunch box holding plate 26 Case 27 Circular crank plate 30 Crankshaft 33 Belt conveyor (second conveyor means) 35 Shaft 36 Slide plate 38 Horizontal housing 42 Parallel moving plate (parallel moving means) 44 Circular crank plate 46 Crankshaft 47 Optical sensor (front detection means) 50 Lunch box (tray) 51 Optical sensor (rear detection means) M1 Motor (for driving belt conveyor 6) M2 Motor (for driving lunch box clamp plates 25a and 25b) M3 motor (for driving rotating frame 15) M4 motor (for driving lunch box clamp plates 25a and 25b up and down) M5 motor (for driving belt conveyor 33) M6 motor (for driving parallel moving plate 42) M7 motor (for driving the parallel moving plate 42 up and down)

Claims

1. An optional tray device for use in a device in which rice or side dishes are supplied in rectangular, open-topped, concave trays are stacked on top of each other, one of the trays is removed from the stack, rice is placed in a portion of the tray, and the trays are transported in sequence on a conveyor belt, a conveyor means for conveying the trays flowing from upstream to downstream; a pre-detection means for detecting the tray that has arrived on the conveyor means by a sensor; a tray clamping means for clamping the tray from both sides after the detection by the front detection means; a rotating means for rotating the tray held by the tray holding means by 90 degrees or 180 degrees, An optional device for a tray in which the tray clamping means is separated from the tray after the rotating means rotates the tray by 90 degrees or 180 degrees, and the tray is transported downstream by the conveyor means.

2. The tray clamping means is provided with a clamping means vertical movement mechanism, 2. A tray option device as described in claim 1, wherein when said rotating means rotates said tray 90 degrees, said clamping means is moved upwardly by said clamping means vertical movement mechanism so as not to interfere with the transport of said tray.

3. An optional tray device for use in an apparatus in which rectangular, open-top concave trays into which rice or side dishes are supplied are stacked, one of the trays is removed from the stack, rice is placed in a portion of the tray, and the trays are transported in sequence on a conveyor belt, a conveyor means for conveying the trays flowing from upstream to downstream; A two-row parallel means for the trays of the conveyor means is provided; The two-row parallel means is provided with a parallel movement means, a moving plate driving means for moving the parallel movement means leftward or rightward with respect to the traveling direction of the trays, and a rear detection means for detecting the trays flowing from upstream with a sensor, When the rear detection means detects the tray, the moving plate driving means abuts against the side of the tray flowing from upstream along the parallel moving means and is moved alternately leftward or rightward, thereby arranging the trays in two rows, An optional tray device in which the trays arranged in two rows are transported downstream by the conveyor means.

4. The two-row paralleling means is provided with a paralleling means vertical movement mechanism, the two-row parallel means is located above the parallel means by the parallel means vertical movement mechanism so that the parallel movement means does not interfere with the transport of the trays, 4. The tray option device according to claim 3, wherein when said tray is moved leftward or rightward, said parallel moving means vertical movement mechanism lowers said parallel moving means to a position below where said parallel moving means can come into contact with a side surface of said tray.

5. The optional device of the tray according to claim 1 is installed on the upstream side, and the optional device of the tray according to claim 3 is installed on the downstream side, An optional tray device in which the tray is rotated 90 degrees or 180 degrees by the tray clamping means, and then moved alternately to the left or right by the parallel movement means, thereby arranging the rotated trays in two parallel rows.

6. The optional device of the tray according to claim 2 is installed on the upstream side, and the optional device of the tray according to claim 4 is installed on the downstream side, An optional tray device in which the tray is rotated 90 degrees or 180 degrees by the tray clamping means, and then moved alternately to the left or right by the parallel movement means, thereby arranging the rotated trays in two parallel rows.

7. 7. The tray option device according to claim 5 or 6, wherein the conveyor means is composed of a narrow first conveyor means on which the tray clamping means and the rotating means are provided, and a wide second conveyor means on which the two-row parallel means is provided.

Images