JP3142117B2 - Top plate loading / unloading equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a top plate loading / unloading facility for stacking or unstacking a top plate, for example, a top plate on which bread is placed.

Generally, in a bread manufacturing process, an operator places bread dough on a top plate that has been conveyed one by one, and the worker also stacks the top plate on which the bread dough is placed on a rack, and fermented. Carry to room. After holding the bread dough tabletop stacked in the rack in the fermentation room for a predetermined time, the operator unloads the tabletop from the rack, places the tabletop on the conveyor, transfers it to the oven, and places it in the oven. Then, the dough placed on the top plate is baked to produce bread.

[0003]

As described above, the work of stacking the top plate on which the dough is placed on a rack or separating the top plate from the rack one by one is performed manually. This is very hard work.

SUMMARY OF THE INVENTION [0004] The object of the present invention has been made in view of the above-mentioned circumstances, and a top plate stacking system capable of easily and quickly realizing loading and unloading of a top plate to and from a rack without manual intervention. It is to provide a drop-off facility.

[0005]

According to the first aspect of the present invention, a top plate on which bread dough is placed is stacked in a plurality of stages and stored in a rack, or stored in the rack in a stacked state. A top plate loading / unloading facility for separating a top plate one by one, wherein the transfer device transports the top plate one by one to a predetermined position, and the transport device is transported by the lift device and a hook lifting device. A ratchet stocker that allows the top plate to be stacked in multiple stages, or that can be separated one by one,
A loader arm is provided which is arranged in a plurality in the vertical direction and is provided so as to be able to advance and retreat and ascend and descend, and has a transfer loader for transferring the top plate in a stacked state with the ratchet stocker and the rack with the loader arm , Two ratchet stocks
Are placed side by side across the transport surface of the transport device, and each ratchet
The stocker has a lifting device below the transfer surface and a
A lifting and lowering device, and stacking or stacking each ratchet stocker.
Is the destination of the top plate transported by the transport device before and after the completion of step unloading
Is switched to use both ratchet stockers .

According to a second aspect of the present invention, in the first aspect of the present invention, the ratchet stocker lift device is disposed below the transport device to raise and lower the top plate, and the ratchet stocker is lifted up and down. Is configured to be able to be transferred between the lowermost position and the transfer device.

[0007] The invention described in claim 3 is the first or second invention.
In the invention described in the above, the hook lifting device of the ratchet stocker has fixed hooks that can be opened and closed at a plurality of vertical fixed positions in the ratchet stocker, and the fixed hook in a closed state can hold a top plate A fixed hook device and a movable hook that can be opened and closed at a plurality of vertical positions in the ratchet stocker are arranged,
A moving hook device provided with the moving hook in a closed state capable of holding the top plate and the moving hook being provided so as to be vertically movable by at least one pitch in the vertical direction of the fixed hook; The moving hook holding the top plate is raised and lowered under the open state of the fixed hook,
The top plate can be delivered to the fixed hook in a closed state.

The first aspect of the present invention has the following operation. The top plate conveyed by the transfer device is stacked in a plurality of stages by a ratchet stocker, and the plurality of top plates are stored in a rack by a transfer loader, or the plurality of top plates stored in the rack are stacked. Transfer to ratchet stocker by transfer loader,
Since the top plate is separated by the ratchet stocker and supplied one by one to the transfer device, loading and unloading of the top plate to and from the rack can be realized without manual operation. Therefore, the work of loading and unloading the top plate can be easily and quickly performed.

The invention according to claims 2 and 3 has the following effects. The moving hook of the moving hook device according to claim 3 holds the top plate in the closed state, moves up and down under the open state of the fixed hook of the fixed hook device, and transfers the top plate to the fixed hook in the closed state. The lift device according to claim 2, wherein the top plate can be transferred between the lowermost position of the ratchet stocker and the transfer device, so that the top plate is stacked in a plurality of stages by the ratchet stocker without manual operation, Alternatively, they can be separated.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view showing one embodiment of a top plate loading / unloading facility according to the present invention. FIG.
It is a front view of the top plate loading / unloading equipment of FIG. FIG. 3A is FIG.
3 (B) is a view taken in the direction of the arrow IIIB in FIG. FIG. 4 is a view of the ratchet stocker in FIG. 1 as viewed from an arrow IV. FIG. 5 is an enlarged front view showing a part of FIG. FIG. 6 is a sectional view taken along the line VI-VI in FIG.
FIG. 7 is a view taken in the direction of the arrow VII in FIG. FIG. 8 shows VIII of FIG.
It is sectional drawing which follows the -VIII line. FIG. 9 is an operation diagram showing the operation of the fixed hook of FIG. 7 and the movement hook of FIG. FIG. 10 is a schematic configuration diagram illustrating the lift device of FIG.

[A] Overall Configuration In a top plate loading / unloading facility 10 shown in FIGS. 1 and 2, a top plate 1 on which frozen bread dough is placed is stacked by a worker in a rack 2 and further placed in the rack 2. The stacked top plates 1 are separated. The frozen bread dough on the top plate 1 stacked in the rack 2 by the top plate loading / unloading equipment 10 is thawed in the thawing room and fermented in the fermentation room. In addition, the top plate loading / unloading equipment 10
The bread dough on the top plate 1 that has been separated from the rack 2 is conveyed to the oven together with the top plate 1 and baked to produce bread.

Here, as shown in FIG. 3B, the rack 2 is configured such that the top plate 1 can be stacked, for example, in 17 stages, and can be moved by wheels 3 provided on the lower surface. Rack 2
Are three shelves (rack 2A,
2B, 2C).

As described above, the couch top loading / unloading equipment 10 is for stacking the couch top 1 on the rack 2 in 17 stages, and for disposing the top plate 1 in the rack 2 in the stacked state. As shown in FIGS. 1 and 2, a transport conveyor 11 as a transport device,
It has a ratchet stocker 12, a transfer loader 13, and a rack positioning device 14.

The transport conveyor 11 is disposed so as to intersect with the ratchet stocker 12, and the top plate 1 is moved one by one at a high speed.
The two ratchet stockers 12 are transported to predetermined positions.

As will be described in detail later, two ratchet stockers 12 are arranged (ratchet stockers 12A, 12A,
2B). Each ratchet stocker 12 includes a lifting device 15
And the hook elevating device 16 allows the top plate 1 conveyed to the predetermined position on the conveyor 11 to be stacked in a plurality of stages, or the stacked top plates 1 are separated one by one on the conveyor 11. Can be transferred to

One transfer loader 13 is arranged as shown in FIGS. 1 to 3 (particularly, FIG. 3). Transfer loader 13
The slide shaft (or rail) 18 is installed on the loader frame 17 in the vertical direction, and an elevating frame 20 is fitted on the slide shaft (or rail) 18 via a slide bearing 19 so as to be able to move up and down. A slide shaft (or rail) 21 is installed in the horizontal direction, and the slide shaft (or rail)
An arm board 24 provided with a loader arm 23 is fitted to a horizontal direction 21 via a slide bearing 22 so as to be able to advance and retreat in a horizontal direction. The loader arms 23 are arranged in a plurality of rows, for example, 17 rows in the vertical direction of the arm substrate 24, and each loader arm 23 can hold the top plate 1.

Loader arm 2 via arm substrate 24
3 is driven by a rodless cylinder device (or a chain and screw device) 25, and the lifting and lowering movement of the loader arm 23 is performed by lifting and lowering the lifting frame 20 by a lifting cylinder (not shown).

Further, the base 26 of the tabletop loading / unloading equipment 10 includes
A guide rail 27 (FIG. 11) extending in the same direction as the transport direction of the transport conveyor 11 is laid, and the loader frame 17 of the transfer loader 13 is slidably disposed on the guide rail 27. Further, a motor and a rack and pinion (not shown) are installed on the loader frame 17, and the transfer loader 13 is moved laterally between the ratchet stocker 12 and the rack 2 along the guide rail 27 by these actions. It is possible.

Accordingly, the transfer loader 13 operates the rodless cylinder device 25 and the like to advance the loader arm 23 into the ratchet stocker 12 and the rack 2, and operates the elevating cylinder device to raise the loader arm 23. , Ratchet stocker 12, top plate 1 stacked in rack 2
The loader arm 23 is retracted to the outside of the ratchet stocker 12 and the rack 2 by operating the rodless cylinder device 25 and the like and stored in the transfer loader 13, and the motor is operated to operate the ratchet via the rack and pinion. Stocker 12
Or, move laterally to the position of the rack 2. Further, after the horizontal movement, the transfer loader 13 advances the loader arm 23 supporting the top 1 in the stacked state again into the rack 2 and the ratchet stocker 12 and lowers the loader arm 23 to set the stacked state. Is supported by the rack 2 and the ratchet stocker 12, and the empty loader arm 23 is retracted outside the rack 2 and the ratchet stocker 12 again. Thus, the transfer loader 13 can transfer the top plate 1 in a stacked state between the ratchet stocker 12 and the rack 2.

As shown in FIG. 1, the rack positioning device 14 is a clamping type positioning device using a cylinder device (not shown), and includes a plurality of racks 2 (for example, three racks 2A, 2B, 2C). Is positioned at a predetermined position.

[B] Ratchet stockers Each of the two ratchet stockers 12 is provided with:
As shown in FIG. 1, FIG. 2 and FIG. 3 (A), a lift device 15 is arranged below the stocker frame 30 and a hook elevating device 16 is arranged from the center to the upper part. The hook lifting / lowering device 16 is fixed at a plurality of fixed positions in the vertical direction of the stocker frame 30 (FIGS. 6 and 7).
Fixed hook device 31 provided with a stocker frame 30
The hook 34 (FIG. 6,
8), and each fixed hook 32 of the fixed hook device 31 constitutes each stage of the ratchet stocker 12 that holds the top plate 1 in a stacked state.

The lift device 15 is shown in FIGS.
As shown in (A), the top plate 1 is located below the transfer surface 35 of the transfer conveyor 11 and the lower surface (first stage) a of the transfer surface 35 of the transfer conveyor 11 and the ratchet stocker 12.
Can be exchanged with ₁ . This lift device 15
As shown in FIG. 10, a guide rod 37 is suspended from a lift arm 36 that supports the top plate 1, and the guide rod 37 is slidably supported by a guide block 38, and is further rotated by a motor 39. A crank arm (or cam arm) 41 is supported by a driven crank wheel (or cam wheel) 40, and the crank arm (or cam arm) 41 abuts on the lift arm 36, and the lift arm 36 is driven by the motor 39. The top plate 1 on the transfer surface 35 of the transfer device 11 is moved up and down, and the ratchet stocker 1
2 to the bottom a _1, also the conveying surface 35 of the top plate 1 the conveyor 11 positioned at the bottom a ₁ ratchet stocker 12
Hand over.

As shown in FIG. 1, the fixed hook devices 31 are arranged at four corners of each ratchet stocker 12, respectively. These fixed hook devices 31 are shown in FIGS.
As shown in FIG. 5, a vertically extending ratchet bar 43 slidably supported by the stocker frame 30 via a guide block 42 so as to be vertically movable, and a plurality of fixed positions in the vertical direction of the stocker frame 30 via pivot pins 45. A plurality of fixed hooks 32 that are pivotally supported and connected to the ratchet bar 43 via links 44, and a piston rod 46 that is installed on the stocker frame 30 and that is connected to the ratchet bar 43 via a receiving member 47 that is fixed to the ratchet bar 43. Fixed hook opening / closing cylinder device 48 connected to the ratchet bar 43
And is configured.

The ratchet bar 43 is raised by the extension operation of the fixed hook opening / closing cylinder device 48, whereby the fixed hook 32 is rotated around the pivot pin 45 via the link 44 to be opened. (The position of the two-dot chain line in FIG. 9). Further, the ratchet bar 43 is lowered by the contraction operation of the fixed hook opening / closing cylinder device 48, whereby the fixed hook 32 is rotated around the pivot pin 45 via the link 44 to be closed (FIGS. 7 and 9). Solid line position). The top plate 1 can be held by the fixed hook 32 in the closed state, and the top plate 1 can be stacked in the ratchet stocker 12.

As shown in FIG. 1, the moving hook devices 33 are arranged to face each other in each ratchet stocker 12. As shown in FIGS. 4 to 6 and 8, each of the moving hook devices 33 includes a pair of slide shafts 50 installed in the stocker frame 30 in a vertical direction, and a slide block 51 fitted to the slide shafts 50. A pair of lift plates 53 are provided so as to be able to move up and down with respect to the stocker frame 30 and are integrated by a connection plate 52, and a guide block 54
A pair of vertically extending ratchet bars 55 (FIG. 5), which are slidably supported up and down via (FIG. 5), and fixed hooks 32 at a plurality of vertical positions of each lift plate 53.
A plurality of moving hooks 34 which are pivotally supported at the same pitch through a pivot pin 56 and are connected to the respective ratchet bars 55 via a link 57, are installed on the stocker frame 30, and are connected to a piston rod 58. A moving hook lift cylinder device 59 pivotally supported by the plate 52 and a piston rod 60 installed on the connection plate 52,
A movable hook opening / closing cylinder device 62 connected to the ratchet bar 55 via a receiving member 61 fixed to the pair of ratchet bars 55.

The ratchet bar 55 is raised by the extension operation of the moving hook opening / closing cylinder device 62, whereby the moving hook 34 is rotated about the pivot pin 56 and opened via the link 57 (see FIG. 9). Dotted line position). Further, the ratchet bar 55 is lowered by the contraction operation of the moving hook opening / closing cylinder device 62, whereby the moving hook 34 is rotated around the pivot pin 56 and closed through the link 57 (FIGS. 8 and 9). Solid line position). The top plate 1 can be held by the movable hook 34 in the closed state. The lift plate 53 is moved up and down via the connecting plate 52 by the expansion and contraction operation of the moving hook lift cylinder device 59 to move up and down each of the plurality of moving hooks 34 arranged in the vertical direction. The moving hook 34 is moved up and down by the fixed hook 3
2 is performed for at least one pitch in the vertical direction.

The moving hook 34 which holds the top plate 1 by being closed by the contraction operation of the moving hook opening / closing cylinder device 62.
Is moved up and down by the expansion and contraction operation of the moving hook lift cylinder device 59 under the open state of the fixed hook 32 so that the top plate 1 can be delivered to the fixed hook 32 in the closed state.

As shown in FIG. 3A, a lowermost sensor 63, a next full sensor 64, and a full sensor 65 are installed on the stocker frame 30 of the ratchet stocker 12, respectively. The lowermost sensor 63 detects that the top plate 1 is moved to the lowermost position a of the ratchet stocker 12 by the lift device 15.
It detects that it has passed between ₁ and the transport surface 35 of the lift device 15.

Further, full sensor 65 is located is the top plate 1 at the top a ₁₇ of the ratchet stocker 12, the top plate 1 with the ratchet stocker 12 detects that it has been staked to the full.

Further, the next full sensor 64 detects that the top board 1 is located at 16 steps a ₁₆ (one step below the uppermost step) of the ratchet stocker 12. When the detection signal is output from the next full sensor 64, the top plate 1 to be transported next by the transport device 11 is moved to the ratchet stocker 12 currently being stacked.
Then, the transfer position of the top plate 1 by the transfer conveyor 11 is switched so that the top plate 1 is transferred to the adjacent ratchet stocker 12 where the stacking operation has not been performed yet.

Next, the stacking operation and the unstacking operation of the ratchet stocker 12 will be described mainly with reference to FIG. (a) Stacking operation The top plate 1 from the transport conveyor 11 is transported onto the lift device 15 in one of the two ratchet stockers 12. During this time, the moving hook 34 of the mobile hook device 33 is closing operation in each stage, except the lowermost a _1, is fixed a hook 32 of the fixing hook 31 is opened simultaneously operated.

In this state, the lift arm 36 of the lift device 15 rises, and lifts the top plate 1 on the lift arm 36 to the lowermost stage a ₁ of the ratchet stocker 12.

Thereafter, all the fixed hooks 32 of the fixed hook device 31 are closed, and the fixed hooks 32 constituting the lowermost stage a ₁ hold the top plate 1 on the lift arm 36. Next, the lift arm 36 of the lift device 15 is lowered, and all the moving hooks 34 of the moving hook device 33 are moved.
Is opened to lower the fixed hook 32 by one pitch.

Next, all the mobile hook 34 of the mobile hook device 33 is closing operation, holds the top plate 1 supported by the fixed hook 32 of the bottom a _1. After this,
All the fixed hooks 32 of the fixed hook device 31 are opened. During this time, the next top plate 1 is transported from the transport device 11 onto the lift device 15 of the ratchet stocker 12.

[0035] Thereafter, the mobile hooks all mobile hook 34 is raised by one pitch equivalent fixing hook 32 of the device 33, the fixing hook 32 from the second stage a ₂ constituting the bottom a ₁
The top plate 1 is raised to a position corresponding to the fixed hook 32 that constitutes.

Thereafter, the above operations (1) to (4) are repeated,
Ratchet engaging hooks 32 of the top a ₁₇ of stocker 12 when the top plate 1 is held, stacking of the top plate 1 in the corresponding ratchet stocker 12 is completed.

(B) Step-off operation A plurality of (17) top plates 1 are carried into one ratchet stocker 12. At this time, all the fixed hooks 32 of the fixed hook device 31 are in the closed state, each holding the top plate 1, and the moving hook 3 of the moving hook device 33.
4, holds the top plate 1 in the closed state in each stage, except the lowermost a _1.

In this state, the lift arm 36 of the lift device 15 moves up to hold the top plate 1 held by the fixed hook 32 constituting the lowermost stage. Then, after all the fixing hooks 32 are opened, the lift arm 36 of the lift device 15 is lowered to move the top plate 1 to the transfer surface 3 of the transfer conveyor 11.
The transport surface 35 transports the top plate 1 to a subsequent process.

Next, all of the mobile hook 34 is lowered one pitch equivalent fixing hook 32 moves the top plate 1 that has been in two stages a ₂ at the bottom a _1.

Thereafter, all the fixed hooks 32 are closed to hold the top plate 1, and then all the movable hooks 34 are opened and raised by one pitch of the fixed hooks 32. Is closed.

Thereafter, the above operations (1) to (4) are repeated,
When the top plate 1 from the fixed hook 32 constituting the lowermost a ₁ ratchet stocker 12 is conveyed to the lifting device 15, stage of the top plate 1 in the ratchet stocker 12 disassembling is completed.

[C] Operation of the Top Plate Loading / Unloading Equipment (See FIG. 1) (a) When the Top Plate 1 is Stacked on the Rack 2 The top plate 1 transported by the transport conveyor 11 is one of two racks When it is located above the lifting device 15 of one ratchet stocker 12B close to 2, the lifting device 15 and the hook lifting device 16 of the ratchet stocker 12B
The top plate 1 is sequentially stacked in the ratchet device 12B to be in a stacked state.

Each of the top boards 1 stacked by the ratchet stocker 12B is held by the loader arm 23 by the forward and upward movement of the loader arm 23 in the transfer loader 13, and the transfer loader is moved by retreating the loader arm 23. 13 and is transported to an empty rack 2B position in this state.

The top plate 1 in the stacked state transferred by the transfer loader 13 is stored in the rack 2B in a stacked state by the forward and downward movement of the loader arm 23 in the transfer loader 13. Thereafter, the transfer loader 13 retreats the loader arm 23 and stays at the position corresponding to the rack 2C.

After the above operation is completed, during the above operations, the top plate 1 conveyed from the conveyer 11 is stacked on another ratchet stocker 12A farther from the rack 2 among the two. .

When the stacking of the top plate 1 is completed by the ratchet stocker 12A, the transfer loader 13 moves the top plate 1 in the stacked state to the rack 2 in the same manner as described above.
Transfer into A.

During the above operation, the top 1 is stacked on the ratchet stocker 12B close to the rack 2, and after the stacking is completed, the top 1 in this stacked state is loaded into the rack 2C by the transfer loader 13. Is stored.

(B) When the top plate 1 in the rack 2 is stepped down The top plate 1 in the stacked state stored in the rack 2B is transferred by the transfer loader 13 into the ratchet stocker 12B. It is separated in the stocker 12B,
It is transported to the transport conveyor 11.

During the unloading operation of the ratchet stocker 12B in the above-described operation, the stacked top plate 1 stored in the rack 2A is transferred by the transfer loader 13 into the ratchet stocker 12A. Thereafter, the top plate 1 is separated by the ratchet stocker 12 </ b> A and transported to the transport device 11.

During the unloading operation of the ratchet stocker 12A in the above operation, the stacked top plate 1 stored in the rack 2C is transferred by the transfer loader 13 into the ratchet stocker 12B. After that, the top plate 1 is separated by the ratchet stocker 12 </ b> B and transported to the transport conveyor 11.

[D] Effects of the Embodiment of the Invention According to the embodiment of the invention described above, the top plate 1 conveyed by the conveyor 11 is stacked by the ratchet stocker 12 in a plurality of stages, and The top plate 1 is stored in the rack 2 by the transfer loader 13, or the plurality of top plates 1 stored in the rack 2 is stored in the ratchet stocker 1 by the transfer loader 13.
2 and the ratchet stocker 12 separates the top plate 1 and supplies it one by one to the conveyor 11, so that the loading and unloading of the top plate 1 to and from the rack 2 is performed manually. It can be realized without. Therefore, the top plate 1
Can be easily and quickly performed.

In particular, the top plate 1 is held with the moving hook 34 of the moving hook device 33 in the ratchet stocker 12 in the closed state, and is moved up and down under the open state of the fixed hook 32 of the fixed hook device 31, and the closed fixed hook is closed. The top plate 1 is transferred to the ratchet stocker 31, and the lift device 15 in the ratchet stocker 12 is moved to the lowermost stage a ₁ of the ratchet stocker 12.
Since the top plate 1 can be transferred between the conveyor 1 and the conveyor 11, the ratchet stocker 12 can stack or unstack the top plate 1 in a plurality of stages without manual intervention.

[0053]

As described above, according to the couch top loading / unloading equipment of the present invention, loading / unloading of the couch top to / from the rack can be easily and quickly realized without manual operation.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of a couch top loading / unloading facility according to the present invention.

FIG. 2 is a front view of the tabletop loading / unloading equipment of FIG. 1;

FIG. 3A is a view taken in the direction of arrows IIIA in FIG. 2, and FIG.
(B) is a view on arrow IIIB of FIG. 2.

FIG. 4 is a view showing the IV of the ratchet stocker in FIG. 1;
It is an arrow view.

FIG. 5 is an enlarged front view showing a part of FIG. 4;

FIG. 6 is a sectional view taken along the line VI-VI in FIG. 5;

FIG. 7 is a view taken in the direction of arrow VII in FIG. 5;

FIG. 8 is a sectional view taken along the line VIII-VIII in FIG. 5;

FIG. 9 is an operation diagram showing the operation of the fixed hook of FIG. 7 and the movement hook of FIG. 8;

FIG. 10 is a schematic configuration diagram showing the lift device of FIG. 3 (A).

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Top plate 2 Rack 10 Top plate loading / unloading equipment 11 Conveyor 12 Ratchet stocker 13 Transfer loader 15 Lift device 16 Hook elevating device 23 Loader arm 31 Fixed hook device 32 Fixed hook 33 Moving hook device 34 Moving hook 43 Ratchet bar 48 Fixed Hook opening / closing cylinder device 53 Lift plate 55 Ratchet bar 59 Moving hook lift cylinder device 62 Moving hook opening / closing cylinder device

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B65G 1/00-1/20 B65G 57/30

Claims (3)

(57) [Claims] 1. A top plate loading and unloading device in which a top plate on which bread dough is placed is stacked in a plurality of stages and stored in a rack, or the top plates stored in the rack are stacked one by one. A transport device that transports the top plate one by one to a predetermined position, and a lift device and a hook lifting device that allow the top plate transported by the transport device to be stacked in a plurality of stages; or
A ratchet stocker that can be separated one by one, and a loader arm that is arranged in a plurality of vertical directions and is provided so as to be able to advance and retreat and move up and down. And a transfer loader to transfer the two ratchet stockers across the transport surface of the transport device.
And each ratchet stocker is relocated below the transfer surface.
The lifting device is placed above the lifting device, and each ratchet
Transport before and after stacking or unstacking of stockers
Switch the destination of the top plate by the device and switch between the ratchet
A top plate loading / unloading facility characterized by switching between different containers. 2. The ratchet stocker lift device, which is arranged below the transfer device, lifts and lowers a top plate, and is configured to be able to transfer the top plate between the lowermost position of the ratchet stocker and the transfer device. Item 4. The top plate loading / unloading device according to item 1. 3. The ratchet stocker hook elevating device, wherein a fixed hook that can be opened and closed is arranged at a plurality of vertical fixed positions in the ratchet stocker, and the fixed hook in a closed state can hold a top plate. And a movable hook that can be opened and closed at a plurality of positions in the vertical direction of the ratchet stocker. The movable hook in a closed state can hold a top plate, and the movable hook is vertically attached to the fixed hook. A movable hook device provided so as to be able to ascend and descend by at least one pitch in the direction, wherein the movable hook holding the top plate in a closed state is moved up and down with the fixed hook opened and closed. 3. The system according to claim 1, wherein said top plate is configured to be able to be transferred to said fixed hook.
Table top loading and unloading equipment.