JPH09221227A - Recovery device for empty pallet for manufacturing game machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To save an installation space required for recovering empty pallets by automatically piling up the empty pallets from a supply stage utilizing a conveyance line. SOLUTION: After an empty pallet 6e-1 is inserted into a storage space D formed below an empty pallet 6e supported by a claw 5h while it is put on an conveying chain 5b, the empty pallet 6e-1 is raised by a lift base 5g, and the claw 5h is brought into a state where it can be drawn out from the empty pallet 6e supported by it. After the claw 5h is drawn out from the empty pallet 6e, the empty pallets 6e-1, 6e are lifted up by the lift base 5g, and the claw 5h is brought into a state where it is locked to the empty pallet 6e-1. After the claw 5h is locked to the empty pallet 6e-1, the lift base 5g is lowered, and the claw 5h supports the empty pallet 6e-1. Then, a storage space is formed in preparation for the following insertion of an empty pallet, that is, plural empty pallets are recovered by piling up them stepwise from below.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention supplies an empty pallet generated when a gaming board in a gaming board block is completely supplied to a gaming machine manufacturing line when manufacturing a gaming machine such as a pachinko machine. The present invention relates to a device for automatically stacking and collecting from a stage using a transfer line.

[0002]

2. Description of the Related Art A game board of a pachinko machine is formed by integrally bonding a cell sheet having a design drawing on its back surface to one surface of a game board such as veneer.

By the way, in order to manufacture a gaming machine such as a pachinko machine, a group of four game boards such as veneer cut by a woodworking maker into substantially rectangular predetermined dimensions are arranged in a grid pattern in a plane. 70 to 80 layers are stacked on a pallet, and a dummy veneer for protecting a game board as a product is formed on the uppermost layer to form a layered body, and this layered body together with the pallet does not collapse with a band. The game board blocks are bundled together to form a game board block, and a large number of game board blocks are loaded on the truck bed and transported to the pachinko machine maker's warehouse, and the forklift truck loads each gaming board block from the truck bed to the warehouse. I am unloading.

In a pachinko machine maker, an operator cuts a band of a game board block unloaded in front of a supply stage of a cell pasting device arranged at the uppermost stream of a game machine manufacturing line from a warehouse by a forklift truck to perform packing. When the game board is unpacked, the dummy veneer is removed from the unpacked game board block, and the game board is mounted on the supply stage of the cell attaching device. From this supply stage, for example, 2 game boards
It is supplied to the hot press which is the first step of the cell sticking device so as to be arranged in a plane in a row.

[0005]

However, when the game board in the game board block is completely supplied from the supply stage to the game machine manufacturing line, an empty pallet is generated, but this empty pallet is generated every time the game board is generated. A worker artificially stacked near the block, and when it reaches a certain height, it is transported to the warehouse by a forklift truck, and empty pallets stacked before the transportation are game boards. Not only hinders the work of supplying the machine to the amusement machine manufacturing line, but also causes the operator to accidentally hit an empty pallet that has been stacked.
Occasionally, the stacked empty pallets may collapse and the operator may be injured.

Therefore, the present invention provides an apparatus capable of automatically stacking and collecting empty pallets generated by the supply of game boards to the game machine manufacturing line from the supply stage using the transfer line. I will try to provide it.

[0007]

An empty pallet collection device for manufacturing a gaming machine according to claim 1 is a top-level supply of a warehouse and a gaming machine manufacturing line inside a building of a factory that manufactures gaming machines such as pachinko machines. Inside the transfer line that has a pair of chains installed between the stage and the upper and lower sides of the upper transfer surface of the pair of chains, the transfer switch that moves up and down and sideways at the ascending limit position A stage is installed, and in this transfer switching stage part, a stack of empty pallets that have been exhausted from a large number of game boards in a game board block for a pachinko machine such as a pachinko machine are collected on the side of the transfer line. While the empty pallet stage is installed, the empty pallet stage is relatively spaced at a predetermined interval on the substantially same plane as the transfer surface at the ascending limit position of the transfer switching stage. A pair of chains that are placed to convey empty pallets to and from the conveyance line via the conveyance switching stage, and a rising limit position where a storage space for one or more empty pallets is formed above the pair of chains. A lift base that moves up and down to a descent limit position located below the pair of chains, and an empty pallet mounted on the lift base at a lift limit position above the lift limit position of the lift base from the side. The empty pallet is held so as to sandwich it from the left and right, and when the held empty pallet is lifted by the empty pallet mounted on the lift base being lifted, the empty pallet is pulled out to the left and right from the held empty pallet and the ascending And a pair of pawls that move so as to allow the lift of an empty pallet mounted on the lift base. According to the structure of claim 1, since the empty pallet stage has the pair of chains, the lift base, and the pair of claws, the empty pallet is transferred from the supply stage to the transfer switching stage via the transfer line and transferred. When the switching stage rises and sends the empty pallet from the transfer line to the empty pallet stage side, the pair of chains of the empty pallet stage starts the transfer operation at the same speed as the transfer speed of the transfer switching stage and is discharged from the transfer switching stage. The empty pallet is carried into the accommodation space formed between the pair of chains and the pair of pawls, and is transferred directly above the lift base of the empty pallet stage. Then, the transport operation of the pair of chains of the empty pallet stage stops, and the lift base starts to rise.During the ascent, the lift base floats and supports the empty pallet from the pair of chains and stops at the rising limit position. . This stop of the lift base to the ascent limit position causes the lift base to start descending after the pair of claws of the empty pallet stage have entered into the projection plane of the empty pallet mounted on the lift base from the side, and then descending. On the way, the empty pallet is received from above by a pair of claws, and a storage space for carrying in the next empty pallet is formed between the lower surface of the empty pallet held by the pair of claws and the upper part of the pair of chains. Lift base stops at the lower limit position. By repeating the pair of chain transfer operation, the lift base up / down operation, and the pair of claw holding / release operations on this empty pallet stage, the empty pallets collected from the supply stage are lifted in order from the bottom. The empty pallets that have been stacked and filled with game boards in the game board block are automatically collected from the supply stage to the empty pallet stage via the transfer line and transfer switching stage to save space for installation. Can be achieved.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 2, a transfer line 1 is installed on a floor near a warehouse (not shown) which is divided inside a building (not shown) of a factory that manufactures game machines such as pachinko machines and conveys it. The game board block 6 which is the target article is automatically carried by being placed on the pair of chains 1a from the warehouse to the supply stage 2, or the empty pallet 6e (actually the same as the pallet 6b, the game board 6a Is attached to the pallet in the stacked state, and reference numeral 6b is attached to the pallet in the empty state where the gaming board 6a is completely supplied from the supply stage 2 of the gaming machine manufacturing line 2 to the inspection stage 6 and is not stacked. Is carried from the supply stage 2 to the warehouse side, and a pair of endless chains 1a can stably mount the pallet 6b of the game board block 6 on the skeleton frame 1b. They are arranged mutually opposed to with a constant interval.

The chain 1a is wound around the sprockets 1c and 1d, which are rotatably mounted on the skeleton frame 1b at the front and rear ends in the conveying direction, so as to reverse the direction of movement, and is located between the sprockets 1c and 1d. The upper transporting part of the chain 1a moves in the one direction indicated by arrow X1 on the supply stage 2 side from the warehouse side by the forward rotation drive of a motor (not shown) fixed to the skeleton frame 1b, and the supply stage is driven by the reverse rotation of the motor. Move from 2 side to the other direction indicated by arrow X2 on the warehouse side.

A rail 1 for slidably supporting the upper carrying portion of the chain 1a on the skeleton frame 1b between the sprockets 1c and 1d and for bearing the weight of the game board block 6.
e is provided.

The supply stage 2 is a region for planarly supplying a set of game boards 6a of the game board block 6 to, for example, an inspection stage (not shown) as the first step of a game machine manufacturing line (not shown), and is a transfer line. It is equipped with a hydraulic cylinder 2a installed inside one end of one chain 1a. A lift base 2b having a size capable of stably mounting the pallet 6b of the game board block 6 is connected to the hydraulic cylinder 2a so as to move up and down by expanding and contracting the piston rod of the hydraulic cylinder 2a.

The lift base 2b is a hydraulic cylinder 2
It is positioned above the transport surface of the upper transport section of the chain 1a of the transport line 1 by stopping from the lower limit position to the upper limit position by the extension drive of a, and the hydraulic cylinder 2
It is positioned below the carrying surface of the upper carrying section of the chain 1a of the carrying line 1 by stopping from the ascending limit position to the descending limit position by the reduction drive of a.

The warehouse receiving stage 3 cuts the band 6d of the game board block 6 to unpack the package and also the dummy veneer 6
In a region where c is removed, a lift base 3a is provided which is moved up and down by an expansion / contraction drive of a hydraulic cylinder (not shown) installed inside one end of the pair of chains 1a of the transfer line 1.

The pallet 6b of the game board block 6 can be stably mounted on the lift base 3a, and the upper transfer in the chain 1a of the transfer line 1 is performed by stopping from the lower limit position to the upper limit position by the extension drive of the hydraulic cylinder. Is located above the carrying surface of the transporting section, and is located below the carrying surface of the upper carrying section of the chain 1a of the carrying line 1 when the hydraulic cylinder contracts from the ascending limit position to the descending limit position.

As shown in FIG. 4, the transfer switching stage 4 is moved up and down and transferred to switch the transfer direction of the empty pallet 6e transferred on the transfer line 1 so as to switch between the transfer line 1 and the empty pallet stage 5. Empty pallet 6e
The hydraulic cylinder 4a is installed inside the transfer line 1 in the middle of the transfer line 1 in the transfer direction. A lift base 4b is connected to the hydraulic cylinder 4a so that the lift base 4b can be moved up and down by expanding and contracting a piston rod of the hydraulic cylinder 4a. A plurality of rollers 4c are rotatably attached to the lift base 4b in a spaced apart arrangement in parallel.

Each roller 4c has an axial length capable of stably mounting an empty pallet 6e, and is extended from the lower limit position of the phantom line shown in FIG. 4 by the extension drive of the hydraulic cylinder 4a to the solid line shown in FIG. Is positioned above the transport surface of the upper transport portion of the chain 1a of the transport line 1 when stopped to the ascending limit position, and when the transport line 1 is stopped from the ascending limit position to the descending limit position by the reduction drive of the hydraulic cylinder 4a. It is located below the carrying surface of the upper carrying section of the chain 1a.

Further, each roller 4c is a lift base 4b.
A motor (not shown) attached to the rotation rotates so as to give a transport direction from the transport line 1 side to the empty pallet stage 5 side, and reverse rotation drive of the motor drives the empty pallet stage 5 side to the transport line 1 side. Rotate to give the transport direction to.

As shown in FIGS. 3 and 4, the empty pallet stage 5 is an area for collecting and stacking empty pallets 6e from the supply stage 2, and is a box-shaped skeleton frame opened to the transfer line 1 side. Inside 5a, there is provided a pair of endless chains 5b which are arranged relative to each other at a predetermined interval so that empty pallets 6e can be stably mounted.

The chain 5b is wound around sprocket wheels 5c and 5d mounted on the skeleton frame 5a so as to be rotatable left and right at the front and rear ends in the carrying direction so as to reverse the moving direction, and is located between the sprocket wheels 5c and 5d. The transport surface of the upper transport portion of the chain 5b is located substantially in the same plane as the transport surface composed of the rollers 4c of the transport switching stage 4 at the ascending limit position, and is not shown in the figure fixed to the skeleton frame 5a. The empty pallet 6e is loaded into the skeleton frame 5a from the transport line 1 side by the normal rotation drive of the motor, and the empty pallet 6e is unloaded from the skeleton frame 5a side to the transport line 1 side by the reverse rotation drive of the motor.

Between the sprockets 5c and 5d, a skeleton frame 5a is provided with a rail 5e for slidably supporting the upper carrying portion of the chain 5b and for bearing the weight of the game board block 6.

A hydraulic cylinder 5f is provided on the inner bottom of the skeleton frame 5a. A lift base 5g having a size capable of stably mounting the empty pallet 6e is connected to the hydraulic cylinder 5f so as to move up and down by the expansion and contraction drive of the piston rod of the hydraulic cylinder 5f.

The lift base 5g is stopped from the lower limit position to the upper limit position by the extension drive of the hydraulic cylinder 5f, and accommodates one or more empty pallets 6e above the transport surface of the upper transport portion of the chain 5b. When the space D (see FIG. 3) is formed, and the lift base 5g is stopped from the ascending limit position to the descending limit position by the reduction drive of the hydraulic cylinder 5f, the upper surface of the chain 5b is conveyed from the conveying surface of the upper conveying portion. Located below.

A pair of claws 5h provided on the skeleton frame 5a above the lift limit position of the lift base 5g.
Is inserted laterally into the empty pallet 6e mounted on the lift base 5g stopped at the lift limit position and holds the empty pallet 6e so as to sandwich the empty pallet 6e from the left and right, while the held empty pallet 6e is rising. Lift base 5g
When being lifted by the empty pallet 6e mounted on the vehicle, the empty pallet 6e is pulled out to the left and right from the held empty pallet 6e and moves so as to allow the lift of the empty pallet 6e mounted on the lift base 5g.

As shown in FIG. 2, the game board block 6 is a set in which, for example, four game boards 6a such as veneer cut into a substantially square shape by a woodworking maker are arranged adjacent to each other in a planar lattice pattern. 70 to 80 steps are stacked on the pallet 6b, and a dummy veneer 6c for protecting the game board 6a is placed on the top of the pallet 6b to form a laminated body, and this laminated body is formed of a synthetic resin together with the pallet 6b. Band 6
700-800k, tied so that the load does not collapse at d
It has a weight of about g. A large number of these game board blocks 6 are loaded on the bed of a truck (not shown) by a woodworking maker and transported to the warehouse of a factory that manufactures game machines such as the pachinko machines mentioned above. After being unloaded from the loading platform, the cranes not shown in the figure store the items one by one on a shelf frame not shown in the warehouse. This game board block 6 stacked
Are loaded on the transfer line 1 from the shelf frame one by one by the crane.

In this embodiment, the carrier line 1 supplies the game board block 6 from the warehouse by a controller (not shown) that receives an output signal from a sensor (not shown) that detects the game board block 6 or the empty pallet 6e. In the case of supplying the empty pallets 6e from the supply stage 2 to the empty pallet stage 5 and stacking them, and in the case of collecting the stacked empty pallet blocks from the empty pallet stage 5 to the warehouse. It works separately as follows.

That is, when the game board block 6 is supplied from the warehouse to the supply stage 2, one game board block 6 is placed on the warehouse side end of the chain 1a of the transfer line 1 by the crane from the shelf frame of the warehouse. When the crane arm is removed from the pallet 6b of the game board block 6 that is mounted, the chain 1a of the transfer line 1 transfers the game board block 6 to the supply stage 2 side, and the game board block 6 receives the warehouse receiving stage. 3, when the carrying operation of the carrying line 1 is stopped, the warehouse receiving stage 3 rises, and the warehouse receiving stage 3 floats and supports the game board block 6 above the carrying line 1 in the ascending state. , The worker cuts the band 6d of the game board block 6 mounted on the transfer line 1 to unpack and remove the dummy veneer 6c To keep.

After that, in response to a game board block supply start command output from a controller (not shown), the warehouse receiving stage 3
Starts to descend, and in the middle of its descending, the chain 1a of the transfer line 1 moves after receiving the game board block 6 and transfers it to the supply stage 2 side, and the game board block 6 arrives at the supply stage 2 and When the carrying operation of the carrying line 1 is stopped, the pallet 6b of the game board block 6 is levitationally supported by the chain 1a of the carrying line 1 while the lift base 2b of the supply stage 2 is rising.

Then, the uppermost set of game boards 6a arranged in a lattice from the game board blocks 6 transferred to the supply stage 2 are arranged on the upstream side of the inspection stage of the gaming machine manufacturing line, which is not shown. It is supplied to the inspection stage by a supply mechanism.

Game board 6a in this game board block 6
The supply of the game board 6a to the inspection stage is exhausted, and the empty pallet 6e remains on the supply stage 2, and the empty pallet 6 remains on the supply stage 2.
When collecting e on the empty pallet stage 5, the lift base 2b of the supply stage 2 is lowered by an empty pallet recovery start command output from a controller (not shown) accompanying the exhaustion of the game board 6a. During the descent, the chain 1a of the transfer line 1 receives the empty pallet 6e and moves to the warehouse side while receiving the empty pallet 6e, and the empty pallet 6e arrives at the transfer switching stage 4 and the transfer operation of the transfer line 1 is started. Is stopped, the empty pallet 6e is floated and supported by the chain 1a of the transfer line 1 while the lift base 4b of the transfer switching stage 4 is rising, and then each roller 4c of the transfer switching stage 4 is moved from the transfer line 1 side to the empty pallet stage. It rotates to the 5 side and conveys the empty pallet 6e to the empty pallet stage 5 side.

Empty pallet 6 on this transfer switching stage 4
Chain 5b of empty pallet stage 5 due to the transportation of e
Starts the carrying operation at the same speed as the carrying speed of each roller 4c of the carrying switching stage 4, and carries the empty pallet 6e transferred from the carrying switching stage 4 into the skeleton frame 5a. When the chain 5b is transferred right above the lift base 5g of the stage 5, the chain 5b
When the carrying operation is stopped, the lift base 5g starts to rise, and the lift base 5g floats and supports the empty pallet 6e from the chain 5b during the ascent (see FIG. 1a).

When the pair of pawls 5h is laterally inserted into the empty pallet 6e mounted on the lift base 5g due to the subsequent stop of the lift base 5g to the upper limit position,
The lift base 5g starts descending, and during the descending process, the upper wall of the empty pallet 6e is received by the pair of claws 5h from above, and the lower surface of the empty pallet 6e held by the pair of claws 5h and the upper part of the chain 5b. Between empty pallet 6e
The accommodation space D having a height equal to or larger than the number of the pieces is formed, and the lift base 5g stops at the lowering limit position (see FIG. 1b).

Further, the empty pallet 6e is replaced by the supply stage 2
Each time it is collected, a certain amount of stacking is performed so that the chain 5b of the empty pallet stage 5 is repeatedly conveyed, the lift base 5g is moved up and down, and the pair of pawls 5h is held / released so that the empty pallet stage 5 moves upward from the bottom. To be done.

The stacking of the empty pallets 6e is carried out through the steps shown in FIGS. 1C to 1F.

First, as shown in FIG. 1c, the storage space D formed below the lowermost empty pallet 6e on which the empty pallet 6e-1 is mounted on the chain 5b and supported by the claws 5h.
Will be transported to.

Next, as shown in FIG. 1D, when the empty pallet 6e-1 enters the accommodation space D and comes directly below the empty pallet 6e, the transport operation of the chain 5b is stopped.

Then, as shown in FIG. 1e, the lift base 5g rises to lift the empty pallet 6e-1, so that the empty pallet 6e-1 is supported by the pawl 5h during the ascent. When the empty pallet 6e is lifted so that the claw 5h comes off the empty pallet 6e, the lifting of the lift base 5g is temporarily stopped.

Subsequently, as shown in FIG. 1f, the claw 5
An output signal from a sensor (not shown) which detects that h is pulled out from the empty pallet 6e and the claw 5h is pulled out from the empty pallet 6e causes the lift base 5g to rise again and stop at the rising limit position.

After that, as shown in FIG.
Is inserted into the empty pallet 6e-1 on the lift base 5g stopped at the ascent limit position.

Finally, as shown in FIG. 1H, the lift base 5g descends, and the empty pallet 6e-
1 is lowered and the upper surface of the empty pallet 6e-1 is claw 5h.
The empty pallet 6e-1 is supported by the claw 5h by being received by the empty pallet 6e-1 and the chain 5e.
An accommodation space D for the next insertion of an empty pallet is formed between it and b.

The symbol H in FIGS. 1a to 1c, f, e, and h is the distance between the chain 5b and the claw 5h, which is filled in for easy understanding of the positional relationship in each drawing. is there.

On the other hand, when the empty pallet block composed of the plurality of stacked empty pallets 6e is collected from the empty pallet stage 5 to the warehouse, the empty pallet 6 is used.
In response to an empty pallet block collection start command output from a controller (not shown) accompanying a certain amount of stacking of e, the lift base 5g starts to rise, After lifting the lower empty pallet 6e, the pair of claws 5h retracts from the empty pallet 6e and comes off.

When the claw 5h comes off from the empty pallet 6e in the lowermost stage of the empty pallet block, the lift base 5g starts to descend, and during the downward movement, the chain 5b of the empty pallet stage 5 is in the empty pallet block. After receiving the empty pallet 6e at the bottom of the table, the pallet block moves and is conveyed to the transfer switching stage 4 side, and the empty pallet block is rotating at the ascending limit position.
When it is transferred to the chain 1a of the transfer line 1 via c and arrives at the warehouse side end, and the transfer operation of the transfer line 1 is stopped, the crane described above moves from the predetermined standby position of the warehouse to the transfer line 1 of the transfer line 1. It moves to the warehouse side end, receives an empty pallet block, unloads it to the warehouse, and returns to a predetermined standby position.

According to the structure of this embodiment, every time the empty pallet 6e is collected from the supply stage 2, the empty pallet stage 5 transfers the chain 5b and the lift base 5 is moved.
Since the empty pallets 6e can be automatically stacked and collected so that the empty pallets 6e are pushed up in order from the bottom by repeating the lifting and lowering operation of g and the holding and opening operations of the pair of claws 5h, the empty pallets 6e and A large number of empty pallets 6e generated with the progress of the manufacturing of gaming machines such as pachinko machines without the blocks being scattered around the factory.
It is possible to reduce the installation space of the collection device by orderly collecting and stacking in a small area.

In the above-mentioned embodiment, the lift bases 2b, 3b, and 3b in each of the supply stage 2, the transfer switching stage 4, the warehouse receiving stage 3 and the empty pallet stage 5 are arranged.
The state in which 4b and 5g are directly fixed to the piston rods of the hydraulic cylinders 2a, 4a and 5f is schematically illustrated, but in reality, the lift bases 2b, 3b, 4b and 5g are stably lifted and lowered so as not to wobble. Although not shown in the drawing, for example, two sets of X-shaped lever units, in which two levers are rotatably connected by pins, are provided between the respective lift bases and the floor with a predetermined interval left and right relative to each other. The lower end of one lever of each lever unit is rotatably connected to a frame installed on the floor with a pin, and the lower end of the other lever is slidably engaged with the frame, and each lever unit While the upper end of the lever is slidably engaged with the lift base, the bottom part of the hydraulic cylinder is rotatably connected by a pin to the lower part of the lever that is pin-connected to the frame, Is equipped with a parallel lifting mechanism in which the piston rod end of the hydraulic cylinder is rotatably connected by a pin to a position above the pin that constitutes the rotation center of each lever unit at the connection point of the two levers. By the extension / contraction drive, the lift base moves up and down in parallel while maintaining the horizontal state via two sets of lever units.

Even if the transfer line 1 is divided into a warehouse line on the warehouse side and a main line on the supply stage 2 side, the same effect can be obtained.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing a collecting operation of an embodiment.

FIG. 2 is a perspective view showing the first embodiment.

FIG. 3 is a front view of the empty pallet stage of the same embodiment.

FIG. 4 is a schematic view corresponding to a cross section taken along the line AA of FIG.

[Explanation of symbols]

 1 Transport Line 2 Supply Stage 4 Transport Switching Stage 5 Empty Pallet Stage 5b Empty Pallet Stage Chain 5g Empty Pallet Stage Lift Base 5h Empty Pallet Stage Claw 6 Game Board Block 6a Game Board 6b Pallet 6e, 6e-1 Empty Pallet

Claims (1)

[Claims] 1. Inside a transfer line having a pair of chains installed between a warehouse and a most upstream supply stage of a gaming machine manufacturing line in a building of a factory for manufacturing gaming machines such as pachinko machines. , A transfer switching stage that moves up and down above and below the upper transfer surface of the pair of chains and moves laterally at the ascending limit position is installed on the side of the transfer line at the part of the transfer switching stage. While installing an empty pallet stage that collects and stacks empty pallets that have exhausted a large number of game boards in a game board block for a game machine such as a pachinko machine, this empty pallet stage is a transfer switching stage. A pair for transporting empty pallets to and from the transport switching stage, which are arranged relative to each other at a predetermined distance on the substantially same plane as the transport surface at the ascent limit position. A chain; a lift base that moves up and down to a lift limit position where one or more empty pallet spaces are formed above the pair of chains; and a lift limit position below the pair of chains; The lift pallet mounted on the lift base above the lift limit position is inserted laterally to hold the empty pallet from the left and right, and the held empty pallet is lifted during lifting. A pair of claws that are pulled out to the left and right from the held empty pallet when lifted by the empty pallet mounted on the base, and that move so as to allow the empty pallet mounted on the lift base during the ascent to rise. An empty pallet collection device for manufacturing a gaming machine, which is characterized by being provided.