JPH05124732A - Supply and takeout device to/from tray - Google Patents

Abstract

PURPOSE:To enhance the maneuvering performance, suppress the costs, and allow the device to be used in a variety of applications by reducing the number of component parts and simplifying the control mechanism while securing the reliance upon the motions. CONSTITUTION:A supply and takeout device to/from a tray is composed of a slide frame 6 to make reversal motions between a step clear part 1 and a locational part 3, an elevating/sinking table 7 moving vertically about the step clear part 1, and a pawl member 12 to open and shut at the step clear part 1 inward and outward, wherein the elevating/sinking table 7 with a tray 2 making interlocked motions through a gear mechanism part 11 placed thereupon sinks onto the slide frame 6 when it moves from the step clear part 1 to the locational part 3, and the pawl member 12 interlocking with the table 7 through a cam mechanism part 14 is engaged by a flange 13 of a second stage tray 2 from below while the undermost tray 2 is dropped onto the slide frame 6. At the locational part 3 a pinching piece 16 pinching tray 2 is provided with possibility of opening and shutting through a link mechanism part 15, and when the slide frame 6 makes motion, the link mechanism part 15 is moved by a projection 24 or a protruding piece 25 provided in an appropriate place thereon, and thereby the pinching piece 16 is opened and shut at a proper time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is to remove the lowermost tray from a stack of trays (separate them), set the removed tray at a predetermined working position (positioning), and automatically operate the tray at the working position. The present invention relates to a tray supply and take-out device for loading or unloading various kinds of articles (for example, electronic parts or foods), then stacking trays downward again, and moving to a separate position each time a fixed quantity is accumulated.

[0002]

2. Description of the Related Art Conventional tray supply / discharging devices include a horizontal tray supply / discharging device for extracting the uppermost tray from a stack of trays and a vertical tray supplying / discharging device for extracting the lowermost tray.

In the case of the conventional vertical tray supply and take-out device, all the trays stacked in the stepped-out position on the upper part of the supply and take-out device are pushed up from the bottom to a predetermined height by an air cylinder for raising and lowering, and the second tray from the bottom is taken up. It has a stepping device that sandwiches it from both sides with a pair of holding air cylinders, lowers the lifting air cylinders, and pulls out only the bottom tray, and the trays that have been dropped out are positioned horizontally by the positioning air cylinders. It was equipped with a positioning device that moved accurately to a certain working position, and a sensor was attached to each cylinder to detect and control the position of the cylinder or its accessories.

At the work position, various articles (for example, electronic parts and foods) are loaded into the tray or the articles loaded in advance are taken out by using an automatic machine or the like, and then the tray is moved to another work position by a lift which is driven separately. Along with stacking downwards, the stacking and positioning device described above is operated to supply new trays to the working position, and repeated loading or unloading work is performed, and a certain number of stacked trays are accumulated below the working position. Each time it was moved to a separate position on the conveyor.

[0005]

However, in the conventional tray supply and take-out device, since a large number of air cylinders are used as a drive source and a large number of sensors are attached to control them, the control mechanism is complicated. It was difficult to handle, and once it broke down, it could take time to find the cause. In addition, since many air cylinders and sensors are incorporated, the manufacturing cost is high, and although it is functionally usable for a wide variety of applications, the applications were limited for economic reasons. ..

Therefore, the present invention has been made based on the above circumstances, has a simpler structure than the conventional one, can be handled easily, can significantly reduce the manufacturing cost, and can be economically used for various purposes. It is an object of the present invention to provide a supply and takeout device for a tray.

[0007]

In order to achieve the above-mentioned object, a tray supply and take-out device according to the present invention comprises a stepped portion on the base end side and a positioning portion on the tip end side on both sides of a base plate above the main frame. Equipped with a tray transfer slide frame that moves between spaces, and an elevating platform that is supported by a post that penetrates the base plate at the center of the stepped portion so that it can move up and down between the slide frames, and a base plate on both sides of the stepped portion. A support rod that vertically moves through is provided, and the support rod is connected to the support rod on the lower surface side of the base plate by a substrate, and the horizontal movement of the slide frame in the stepped portion over the slide frame and the base plate Provided with a gear mechanism part that changes into movement, and attached pawl members on the base plates on both sides of the stepped part so as to be rotatable inward and outward,
The claw member is at a position higher than the slide frame by at least one step of the tray when it is rotated inward, and is in a position where it can be engaged with the flange of the tray from below. A cam mechanism section is provided that straddles the upper part of the claw member and the claw member by the vertical movement of the support rod, and when the slide frame moves from the base end side of the stepped portion to the tip side, The lift table in the high position descends to a position lower than the slide frame, and the claw members rotate from the outside to the inside while the lift table descends, and from the bottom on the lift table to the collar of the second tray from below. When the slide frame is engaged and the slide frame moves from the tip end side to the base end side of the stepped portion, the elevating platform at a position lower than the slide frame rises to a position higher than the slide frame. Is characterized in that the pawl member is provided with a stepped disassembling apparatus so as to move to a position which does not interfere with the tray rotates from the inside to the outside.

Further, the tray supply and take-out device of the present invention is
On both sides of the base plate above the main frame, there is a tray transfer slide frame that moves between the stepped part on the base end side and the positioning part on the tip end side. Attaching projecting pieces, the sandwiching pieces that sandwich the tray are attached to both sides of the base plate of the positioning section so as to be openable and closable via the link mechanism section, and the passive member is moved to the link mechanism section from the base end side to the tip side. When the sandwiching piece is attached to the position where the sandwiching piece opens and the closing piece closes with the movement in the opposite direction, and the slide frame on which the tray is placed moves slightly from the stepped portion to the positioning portion, the passive member is moved to the base end side by the protrusion. When the slide frame is moved to the positioning portion side and the holding member is moved to, the passive member is moved to the distal end side by the protruding piece and the holding device is closed. The one in which the features.

Furthermore, the supply and take-out device of the present invention is characterized in that it has both the above-mentioned step-out device and the positioning device.

[0010]

When the slide frame moves from the stepping portion side to the positioning portion side, the stepping device of the tray supply and take-out device according to the present invention slides by the gear mechanism portion provided over the slide frame, the base plate and the elevating table. The elevating table above the frame descends below the slide frame, and the vertical movement of the elevating table causes the cam mechanism to act to rotate the claw member at the appropriate time, and the second tray from the bottom on the elevating table is rotated. The pawl member engages with the collar from below, and the tray at the bottom is pulled out onto the slide frame.

Further, in the positioning device of the present invention, the tray on the slide frame is located in front of the tray held by the positioning part when the slide frame moves from the stepped part side to the positioning part side. Then, by moving the passive member toward the base end side by the protrusion at the tip of the slide frame, the sandwiching piece is opened via the link mechanism portion.

Further, according to the positioning device of the supply and take-out device of the present invention, when the slide frame on which the tray is placed is moved to the most tip end side toward the positioning part in which the holding piece is opened, the protrusion in the middle part of the slide frame is formed. Hits a passive member attached to the link mechanism section toward the tip side to close the sandwiching piece and hold the tray on the slide frame immovably.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a tray supply / discharging device according to the present invention will be described in detail with reference to the drawings. The supply / discharging device according to the present invention is a tray having a substantially rectangular shape in the middle portion on a box-shaped main frame 4. A guide strut 27 for supplying the two in a stacked state is provided upright, the stepped-out portion 1 is provided on the front upper side of the guide strut 27, and the positioning portion 3 is provided on the remaining upper portion.
Is provided and a motor-driven stacking lifter 28 for receiving and stacking the trays 2 after the work is arranged below the positioning unit 3. The stacking lifter 28 is arranged from below the stacking lifter 28 to below the stacking unit 1 and then to the main frame 1 Conveyor 2 for transfer to the front side
9 is provided, and its basic configuration is the same as that of the conventional supply and take-out device, but in the case of the supply and take-out device of the present invention, it is characterized by the step-out device 30 of the step-out part 1 and the positioning device 26 of the positioning part 3. .. The stacking lifter 28 and the conveyor 29 are the same as those of the conventional one, and the description thereof will be omitted.

First, the step-out device 30 of the present invention will be described. The main frame 4 has a base plate 5 on the upper surface, and rails 31 are laid on both sides of the upper surface of the base plate 5 over substantially the entire length, and a U-shaped side portion 32 is bent outward from the rail 31 in the opposite direction. Is provided, the distance between both rails 31 is set to be a little wider than the width of the tray 2, the entire main frame 4 is covered with the base plate 5 in the step-out portion 1, and the tray 2 is used as the lower stacker 28 in the positioning portion 3. A space S for moving is formed.

Slide frames 6 which can slide along the rails 31 are provided on both sides of the upper surface of the base plate 5 so as to face each other, the gap between the slide frames 6 is made narrower than the width of the tray 2, and both slide frames 6 are used as a base. It is integrated by a connecting piece 33 at the end side (away from the positioning part 3) or the tip side, and an elastic pad 34 for pushing out the tray 2 to the positioning part 3 side when the slide frame 6 slides is attached. ..

A motor 35 is installed on the upper surface of the base plate 5 on the base end side and is connected to the slide frames 6 on both sides via mechanical power transmission means. Sliding along 31 is from the stepped portion 1 side to the positioning portion 3 side or in the opposite direction.

That is, the two rails 3 are provided on the base end side of the motor 35.
1 is provided, and a sprocket 38 attached to the drive shaft 37 of the motor 35 and a sprocket 39 attached to the pivot 36 are hooked with an endless chain 40 to form the pivot 3
6 have separate sprockets 41 attached to both ends thereof, and the sprocket 4 at the end of the pivot 36 is provided on both sides of the upper surface of the base plate 5 intermediate portion.
The sprocket 42 corresponding to No. 1 is provided, another chain 43 is hung between the both sprockets 41, 42, and one portion of the chain 43 is fixed to the lower surface of the slide frame 6 by a fixing bracket 44.

Further, at the center of the step-out portion 1, there is provided a lifting table 7 which moves up and down in association with the sliding of the slide frame 6 via a gear mechanism 11. A pair of window-equipped sleeves 45 penetrating the base plate 5 are erected side by side between the rails 31 in the center of the stepped-out portion 1, and the columns 8 of the lifting platform 7 are vertically movably inserted into the window-attached sleeves 45. Vertical rack 46 is formed on
The lower ends of both columns 8 projecting from the lower surface of the base plate 5 are attached to a belt-shaped substrate 10 having substantially the same width as the base plate 5.

On the other hand, a horizontal rack 49 having a predetermined length is provided on the lower surface of each slide frame 6 along the moving direction thereof, and an intermediate shaft 50 is provided at a position close to the sleeve 45 of the base plate 5 along the facing direction of the rail 31. The small pinion 51 at both ends of the intermediate shaft 50, and the medium pinion 5 having a slightly larger diameter toward the center.
2 sets are attached respectively, the middle pinion 52 is always meshed with the vertical rack 46 exposed from the window of the sleeve 45, and the small pinion 51 is the horizontal rack 4 when the slide frame 6 slides.
It is designed to temporarily mesh with 9.

As described above, the slide frame 6 and the lift 7
The horizontal rack 49 and the small pinion 51,
By providing the gear mechanism unit 11 including the intermediate shaft 50, the middle pinion 52, and the vertical rack 46, when the slide frame 6 slides toward the positioning unit 3 side in the stepped-out unit 1, the horizontal rack 49 and the small pinion 51 move. When meshed, the vertical rack 46 that meshes with the small pinion 51 and the middle pinion 52 that is coaxial moves downward, and the lifting platform 7 moves down from a position higher than the slide frame 6 to a position lower than the slide frame 6. Sliding in the opposite direction, the horizontal rack 49 and the small pinion 51
When the gears are meshed with each other, the lift 7 is raised from a position lower than the slide frame 6 to a position higher than the slide frame 6. When the horizontal rack 49 and the small pinion 51 do not mesh with each other, the lifting table 7
Is held immobile.

At both ends of the substrate 10, side portions 3 of the base plate 5 are provided.
The support rod 9 penetrating through 2 is erected, and a pair of bearing plates 53 are respectively arranged on both side portions 32 of the stepped-out portion 1 in the sliding direction of the slide frame 6 and erected with the support rod 9 interposed therebetween. A pair of bearing plates 53 pivotally support the shaft rod 54 in parallel with the rail 31, the claw members 12 are fixedly attached to both ends of the shaft rod 54, and the support rod 9 and the claw member 12 are moved up and down. There is provided a cam mechanism portion 14 for rotating the claw member 12 inward and outward in a timely manner in conjunction with.

That is, a substantially horizontal upper cam plate 47 is provided at the upper end of the support rod 9, and a lower cam plate 48 is provided slightly below the upper cam plate 47. The upper cam plate 47 is shortened inward, and the lower cam plate 48 is projected long.
The bearing member 55 is attached to the middle portion of the shaft rod 54 to receive the bearing plate 5
3, the piece plate 57 is swingably attached near the receiving member 55,
An inner protrusion 58 and an outer protrusion 59 are provided on the inner and outer ends of the piece plate 57.

The claw member 12 is at the center (inside) of the step-out portion 1.
It is possible to take a state in which the trays 2 stacked on each other are locked from below from the state in which they are rotated together with the shaft rod 54 and do not interfere with the trays 2 at all. The urging spring 56 constantly urges the claw member 12 in the direction in which it engages with the collar 13. Auxiliary piece 60 on the piece board 57
A holding spring 61 is additionally provided via the pin to hold the state in which the inner protrusion 58 abuts the receiving member 55 from above or the inner protrusion 58 swings above the receiving member 55 and is separated. Is done.

Here, the holding spring 61 is stronger than the biasing spring 56, and the inner protrusion 58 has the receiving member 5
5, the claw member 1 coaxial with the receiving member 55
2 also rotates in the direction (outside) away from the collar 13 of the tray 2.

When the slide frame 6 is located at the most proximal side of the stepped-out portion 1, the lift table 7 is located higher than the slide frame 6, and a large number of trays 2 are stacked on the lift table 7. It is placed. Further, the lower cam plate 48 of the support rod 9 connected to the lift table 7 through the support column 8 and the substrate 10 pushes up the outer protrusion 59 of the piece plate 57, and the inner protrusion 58 of the piece plate 57 is rotated downward to receive the same. The member 55 is pushed down, the claw member 12 coaxial with the receiving member 55 is opened to the outside, and the claw member 12 is separated from the collar 13 of the tray 2.

From this state, the slide frame 6 is moved to the positioning portion 4 side by the operation of the motor 35, and the horizontal rack 4 is moved.
When 9 meshes with the small pinion 51, the slide frame 6
Is transmitted via the gear mechanism unit 11, and the lift table 7 supported by the support column 8 descends to a position lower than the slide frame 6.

The supporting rod 9 connected by the support 8 and the substrate 10 is also lowered, and the lower cam plate 48 attached to the supporting rod 9 is attached to the piece plate 5.
7, but a holding spring 6 attached to the piece plate 57
1 keeps the state until then (the state where the claw member 12 is opened to the outside).

After a short time, while the lift table 7 is still higher than the slide frame 6, the upper cam plate 47 descends and strikes the outer protrusion 59 of the piece plate 57 from above, so that the inner protrusion 58 faces upward. It is rotated to separate from the receiving member 55. Then, the biasing spring 56 causes the claw member 12 to rotate inward, and the collar 13 of the tray 2 on the lifting table 7 being lowered.
Engage from below.

Here, the pawl member 12 is engaged with the collar 13 of the tray 2 on the second stage from the bottom on the lifting table 7 which is being lowered.
After the positions of the claw member 12 and the upper and lower cam plates 47 and 48 are set and the claw member 12 is engaged, the elevating table 7 is further lowered to a position lower than the slide frame 6, and the tray 2 of the second stage or more is used.
Is held above the slide frame 6 by the claw member 12, and the tray 2 at the bottom is slide frame 6
It's designed to slip up.

The piece plate 57 is an upper cam plate 47 and an outer projection 59.
After being hit from above, the holding spring 61 stably holds the inner projection 58 in a state of being separated from the receiving member 55. In this state, even if the support rod 9 is lifted again, the upper cam plate 4 is lifted.
7, the outer projection 59 is not hit and the lower cam plate 48 pushes the outer projection 59 up.

In the stage disassembling section 1, the tray 2 at the bottom stage
When the slide frame 6 is further moved to the positioning portion 3 side after being pulled out onto the slide frame 6, the meshing state of the horizontal rack 49 and the small pinion 51 is eliminated. At this time, the lifting table 7 is lower than the slide frame 6 and is stopped at a position where its movement is not hindered.

When the slide frame 6 returns after the tray 2 is transferred to the positioning unit 3, the horizontal rack 49
While the small pinion 51 meshes with the small pinion 51, the lifting table 7 rises from a position lower than the slide frame 6 to a position higher than the claw member 12, and a large number of trays 2 held by the claw member 12 are mounted on the lifting table 7. When the support rod 9 is lifted again, the lower cam plate 48 pushes up the outer protrusion 59 of the piece plate 57, and the inner protrusion 58 interposes the receiving member 55 and the shaft rod 54 on the pawl member 12.
Open to the outside. Even after the meshing state of the lateral rack 49 and the small pinion 51 is resolved, the lateral rack 49 is further moved to the base end side, but at this time, the immediately preceding state is maintained.

Next, the structure of the positioning device 26 provided in the positioning unit 3 will be described. In the positioning portion 3, the sandwiching pieces 16 are openably and closably attached to the side portions 32 on both sides of the positioning portion 3 via the link mechanism portion 15.
Sliding member 18 which reciprocates in the direction of rail 31 in 2
And a sliding member 18 is provided along with the movement of the slide frame 6.
The link mechanism portion 15 is moved to open and close the sandwiching piece 16 in a timely manner.

The sliding member 18 is provided with an elongated hole 62 of a predetermined length along the rail 31 direction, and a pair of guide pins 63 attached to the side portions 32 are inserted into the elongated hole 62 to attach the sliding member 18 to the rail 31. Mounted so as to be reciprocally movable within a predetermined range along the direction, and bent portions 19 and 20 are formed at both ends of the sliding member 18,
A swing rod 21 whose upper and lower ends swing in the direction of the rail 31 is provided in the side part 32 near the base end side of the sliding member 18, and rollers 22 and 23 are attached above and below the swing rod 21, respectively. Is swung toward the base end side, the base end side bent portion 5 of the sliding member 18 is moved.
4 is abutted from the tip side.

Further, the link mechanism portion 15 connects one end of the bell crank 64 to the holding piece 16 and pins the center of the bell crank 64 to the side portion 32, and the other end of the bell crank 64 is connected to the first link 65, It connects with the upper end of the vertical axis 67 via the two links 66, the base end of the third link 68 is fixed to the lower end of the vertical axis 67 in the side part 32, and the passive member (roller) 17 is attached to the front end of the third link 68. Is attached, and the distal end side bent portion 19 of the sliding member 18 is engaged with the passive member 17 from the distal end side.

Further, a protrusion 24 is provided below the tip of the slide frame 6, and a protrusion 25 is provided on the side surface of the intermediate portion.
When the slide frame 6 moves a little toward the tip side, the projection 24 hits the lower roller 23 of the swing rod 21, and when the slide frame 6 moves to the most tip side, the protrusion 25 The passive member 17 of the link mechanism 15 can be hit.

The positioning unit 3 is provided with a stopper so that the tray 2 transferred by the slide frame 6 does not exceed a predetermined position, and a sensor for detecting that the slide frame 6 has moved to the most distal end side. ..

While the positioning unit 3 is loading or unloading the tray 2 by an automatic machine or the like, the sandwiching piece 16 is closed to hold the tray 2, and the slide frame 6 on which one tray 2 is placed is It stands by before the positioning unit 3.

When the work by the automatic machine is completed, the motor 35 is operated based on the completion signal from the automatic machine, and the slide frame 6 moves to the positioning portion 3 side. In the slide frame 6, the projection 24 hits the lower roller 23 of the swing rod 21 and temporarily stops at that position. At this time, the tray 2 on the slide frame 6 is still in a position where it does not interfere with the tray 2 between the sandwiching pieces 16.

In the positioning portion 3, the upper roller 22 of the swing rod 21 comes into contact with the proximal end side bent portion 54 of the sliding member 18 from the distal end side, and the sliding member 18 moves toward the proximal end side. Sliding member 1
The tip side bent portion 19 of 8 abuts the passive member 17 from the tip side, the tip of the third link 68 rotates to the base end side (the stepped portion 1 side), and the vertical pivot 67 connected to the third link 68, The bell crank 64 is rotated through the second link 66 and the first link 65 to open the sandwiching piece 16. The tray 2 between the sandwiching pieces 16 is dropped onto the stacking lifter 28 that stands by immediately below. Each time the stacker lifter 28 receives one tray 2, the stacker lifter 28 detects it and lowers it by one.

After the sensor detects that the stacking lifter 28 has received the tray 2 and is lowered, the slide frame 6 further moves to the positioning portion 3 side. When the tray 2 on the slide frame 6 reaches the position where it comes into contact with the stopper, the protrusion 25 at the middle of the slide frame moves the passive member 17 of the link mechanism portion 15 from the base end side opposite to that when the holding piece 16 is opened. Hitting and sandwiching both via the link mechanism 15
6 is closed and the tray 2 on the slide frame 6 is held immovably.

When the slide frame 6 moves to a position where it directly hits the passive member 17 with its protruding piece 25, it is detected by a sensor, and the motor 35 reverses after the time required to hold the tray 2 as described above and the base end side ( The slide frame 6 returns to the step-out portion 1 side).

[0043]

As described above, in the tray supply and take-out device according to the first aspect of the present invention, the slide frame moved by one power source (motor) mechanically interlocks the entire stepping device. Therefore, the operation is reliable, a large number of air cylinders are not required unlike the conventional case, and it is not necessary to use a large number of sensors as in the conventional case.

Also, in the tray supply and take-out device according to the second aspect, since the entire positioning device is mechanically interlocked with the slide frame which is driven by one power source, the operation is sure and the conventional device is provided. It does not require a large number of air cylinders and does not require a large number of sensors as in the past.

Therefore, the manufacturing cost can be remarkably reduced, and it is possible to use it for the purpose which has been difficult to use for the economical reason, and it can greatly contribute to the improvement of the work efficiency in various fields.

[Brief description of drawings]

FIG. 1 is a perspective view showing the structure of a main part of a tray supply and take-out device according to the present invention.

FIG. 2 is a partially cutaway front view of a main part of the supply / extraction device of the present invention.

FIG. 3 is a vertical cross-sectional view of a main part of the supply / extraction device of the present invention.

FIG. 4 is a partially cutaway plan view of the supply and take-out device of the present invention.

FIG. 5 is a schematic front view of the supply and take-out device of the present invention.

FIG. 6 is a schematic side view of the supply and take-out device of the present invention.

[Explanation of symbols]

 1 step disassembly part 2 tray 3 positioning part 4 main frame 5 base plate 6 slide frame 7 lift base 8 pillar 9 support rod 10 substrate 11 gear mechanism part 12 claw member 13 collar 14 cam mechanism part 15 link mechanism part 16 sandwiching piece 17 passive Member 24 Projection body 25 Projection piece 26 Positioning device 30 Step disassembling device

Claims (3)

[Claims] 1. The bottom tray (2) is removed from the trays (2) stacked on the destacking section (1) and set at a fixed position of the positioning section (3), and articles are loaded on the tray (2). Alternatively, in a tray supply / extraction device that moves the tray (2) to a separate position after taking it out, on both sides of the base plate (5) above the main frame (4), the stepped-out portion (1) on the base end side and the tip end side It has a tray (2) moving slide frame (6) that moves between it and the positioning part (3), and it is supported by a column (8) penetrating the base plate (5) at the center of the stepped-out part (1). A lift base (7) is provided between the slide frames (6) so that it can move up and down, and support rods (9) that penetrate the base plate (5) so as to move up and down are provided on both sides of the stepped portion (1). The pillar (8) and the support rod (9) are connected by the substrate (10) on the lower surface side of the plate (5), A gear mechanism (11) is provided which changes the horizontal movement of the slide frame (6) in the stepped portion (1) into the vertical movement of the support (8) across the slide frame (6), the base plate (5) and the support (8). , The claw members (12) are rotatably mounted on the base plate (5) on both sides of the stepped-out portion (1) so that the claw members (12) can rotate inward and outward, and the claw members (12) can rotate at least at the slide frame (6). ) Of the tray (2) at a position higher than the tray (2) by one step.
3) at a position where it can be engaged from below, at a position where it does not interfere with the tray (2) when it is rotated outward, and the support rod straddles the upper part of the support rod (9) and the claw member (12). A cam mechanism (14) for rotating the pawl member (12) by the vertical movement of (9)
When the slide frame (6) moves from the base end side to the tip end side of the stepped portion (1), the lift table (7) located at a higher position than the slide frame (6) is more than the slide frame (6). While descending to a lower position, the claw member (12) rotates from the outside to the inside during the lowering of the lift table (7), so that the collar () of the tray (2) on the second stage from the bottom on the lift table (7) ( 13) Engaging from below, slide frame (6)
When moving from the tip end side to the base end side of the stepped portion (1), the lift table (7) at a position lower than the slide frame (6) rises to a position higher than the slide frame (6), and A tray supply and take-out device, characterized in that the member (12) is provided with a step disassembling device (30) which is rotated from the inside to the outside so as to move to a position where it does not interfere with the tray (2). 2. The lowermost tray (2) is removed from the trays (2) stacked on the stepped-out portion (1) on the base end side, and the tray (2) is placed at a fixed position on the positioning portion (3) on the tip end side, and the tray is placed. In a tray supply and take-out device for moving the tray (2) to a separate position after loading or unloading articles in (2), the step-out parts (1) are provided on both sides of the base plate (5) above the main frame (4). ) And a positioning part (3), a slide frame (6) for transferring the tray (2) is provided, and a projection (24) is provided at the tip of the slide frame (6).
A projection piece (25) attached to the middle part of the positioning section (3)
Holding plate (1) for holding tray (2) on both sides of base plate (5) of
6) is openably and closably attached via the link mechanism section (15), and the holding member (16) opens on the link mechanism section (15) as the passive member (17) moves from the proximal end side to the distal end side. Along with the movement in the opposite direction, the sandwiching piece (16) was attached to the position where the holding piece (16) was closed, and the slide frame (6) on which the tray (2) was placed moved slightly from the stepped portion (1) to the positioning portion (3). In the state, the projection member (24) moves the passive member (17) toward the base end side to open the holding piece (16), and when the slide frame (6) is moved to the most distal end side,
A tray feeding / discharging device comprising a positioning device (26) configured to move the passive member (17) toward the tip side by the projecting piece (25) to close the sandwiching piece (16). 3. The bottom tray (2) is removed from the trays (2) stacked on the destacking section (1) and set on the positioning section (3), and articles are loaded or unloaded on the tray (2). A tray supply / pull-out device for transferring the rear tray (2) to a separate position, wherein the stepping device (30) according to claim 1 and the positioning device (2) according to claim 2.
6) and a tray supply / discharging device.