JP2826806B2 - Mold material 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 molding material unloading facility for anodized materials and the like, and more particularly to a method for transferring a molding material such as alumite-treated materials to an empty pallet and carrying out the molding material together with the pallet. Equipment.

[0002]

2. Description of the Related Art Conventionally, as a facility for carrying out a material to be subjected to alumite treatment (hereinafter referred to as a mold), as shown in FIG. , A pallet lifter 2 and a second traverser 3.
Receives the empty pallet 4 from the empty pallet supply conveyor 5 at a position adjacent to the empty pallet supply conveyor 5 for supplying the empty pallet 4, and transfers it to a position adjacent to the pallet lifter 2. The pallet lifter 2 receives the empty pallet 4 from the first traverser 1, descends, moves the empty pallet 4 to the height of the molding material loading operation position X, and after ascending the molding material, loads the molding material. The second traverser 3 receives the actual pallet 6 from the pallet lifter 2 at a position adjacent to the pallet lifter 2 and moves the actual pallet 6 to the height position of the second traverser 3. Pallet conveyor 7
And then transferred to the actual pallet carry-out conveyor 7.

As shown in FIG. 1, the steps of loading a shape material onto an empty pallet and carrying out the actual pallet using the above-described conventional apparatus are as follows. First, as shown in FIG. The pallet 4 is transferred to the first traverser 1 by the pallet transfer mechanism of the first traverser 1. Next, the first traverser 1 moves in the direction of the arrow b in the drawing in the longitudinal direction of the pallet to a position adjacent to the pallet lifter 2 (FIG. 1A).

The empty pallet 4 is transferred to the pallet lifter 2 by the transfer mechanism of the first traverser 1 (arrow c in the figure). Thereafter, the pallet lifter 2 descends in the direction of the arrow d in the drawing to the work loading position where the work 8 is loaded on the empty pallet 4 and the actual pallet 6
It is said. On the other hand, the first traverser 1 from which the empty pallets 4 have been removed moves in the direction of arrow e in the drawing and returns to the original position adjacent to the empty pallet supply conveyor 5. On the other hand, the second traverser 3 moves in the direction of the arrow f in the figure to a position adjacent to the pallet lifter 2 at the time of ascending (FIG. 1B).

After the pallet lifter 2 loaded with the actual pallet 6 has been moved up to the original position adjacent to the second traverser 3 in the direction of the arrow g in the longitudinal direction of the pallet, the pallet transfer of the second traverser 3 is performed. The actual pallet 6 is transferred to the second traverser 3 by the mechanism (arrow h in the figure). On the other hand, a new empty pallet 4 is transferred to the first traverser 1 from the empty pallet supply conveyor 5 by the transfer mechanism (arrow i in the figure) (FIG. 1 (c)).

Then, the second traverser 3 loaded with the actual pallets 6 moves in the direction of the arrow j in the figure to a position adjacent to the actual pallet unloading conveyor 7, and then the actual pallets 6 are moved to the position of the second traverser 3. The pallet is transferred to the actual pallet unloading conveyor 7 by the pallet transfer mechanism (arrow k in the figure). The transferred real pallet 6 moves on the carry-out conveyor 7 in the direction of arrow m in the figure and is carried out (FIG. 1 (d)).

[0007] Usually, after the blanks are loaded on the empty pallet 4, an operation of fastening the bundle of the blanks in the pallet with a band and covering or packaging the blanks with a covering material such as vinyl are performed. This is to prevent a part or the whole of the shape material from being accidentally moved or collapsed in the pallet, thereby hindering the transfer, and to prevent the shape material after the actual pallet 6 is carried out by the real pallet carry-out conveyor 7. Is to be able to be shipped or stored in the bundle unit as it is, without re-sorting according to the shipping destination or product type. It should be noted that if the sorting operation is performed in parallel with the loading operation of the form material, the time for performing the sorting operation again as described above can be saved. Therefore, in order to shorten the required working time and increase the overall production efficiency, the bundle of the mold materials needs to be composed only of the same kind.

The pallet (empty pallet 4) is generally
It had a shape as shown in FIG. 2, and the size used was only one kind of length L × width W × height H, each of 5000 × 1000 × 900 (unit: mm).

[0009] In recent years, there has been a demand for a large variety and small quantities of molding materials, and the number of molding materials to be loaded per pallet for the same type in the molding material carrying-out process has been reduced. As described above, in order to increase the production efficiency, it is necessary that the shape materials loaded on one pallet be of the same type, so that the time required for unloading per pallet is long in the conventional small-type and mass production. At the same time, the number of profiles that can be carried out per day is
The number of pieces loaded per pallet is reduced by an amount corresponding to the reduced amount. This means that the total production amount of the molding material is reduced, which causes a shortage of supply to the market, and increases the production cost per molding material, thereby increasing the molding material price.

[0010] The inventors of the present invention have proposed a method of maintaining one level of the total discharge amount as much as possible in order to prevent a decrease in the total production volume of the shape members and, if possible, to improve the total production amount. We tried to shorten the time required for unloading work.

For this reason, first, the time distribution of each operation in the cycle of the molding material unloading process in the case of the conventional small variety and mass production was examined in detail. According to this, the time distribution of each work was as follows. (1) Time to transfer empty pallet 4 from empty pallet supply conveyor 5 to first traverser 1 Approx. 3 to 5 seconds (2) No. Time to move 1 traverser 1 to the position of pallet lifter 2 Approx. 20 seconds (3) Remove empty pallet 4 Transfer time from the first traverser 1 to the pallet lifter 2 Approx. 3 to 5 seconds Approximately 3 seconds (5) Die 8 on empty pallet 4 Loading time (per piece) ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ 3-5 seconds / piece (6) Loading Time for banding and wrapping the shaped material ... 15 seconds (7) Time to move the first traverser 1 to the original position adjacent to the empty pallet supply conveyor 5 ..about 20 seconds (8) Second Time to move the traverser 3 of the pallet lifter 2 to the position adjacent to the pallet lifter 2 when the pallet lifter 2 is lifted up .............. about 20 seconds Time to rise to the original position adjacent to 3 ・ ・ ・ ・ ・ ・ ・ ・ ・ about 3 seconds (10) The actual pallet 6 is moved from the pallet lifter 2 to the second traverser 3 Time to transfer to ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ about 3-5 seconds (11) Second traverser Time for moving the pallet 3 to a position adjacent to the pallet unloading conveyor 7 Approx. 20 seconds (12) The actual pallet 6 is moved from the second traverser 3 Time to transfer to pallet unloading conveyor 7 Approx. 3 to 5 seconds

The times (5) and (6) do not depend on the driving speed of each device or the distance between the devices. When the number of the shapes to be loaded on one empty pallet is large as in the conventional case, the total time obtained by multiplying the time of the above (5) by the number of the shapes is considerably long. The process was a rate-determining stage that determined the cycle of one cycle.

This will be described in detail with reference to FIG.
FIG. 3 shows that, in the case where the time of the above (5) is considerably long using the conventional device, the operation and operation of each device are made continuous between the devices so that the cycle of one cycle is minimized. 6 is a flow sheet showing a flow of a work process when the operation is performed. In FIG. 3, the circles connected by a dotted line indicate the movement of the first traverser 1, the crosses connected by a solid line indicate the movements of the pallet lifter 2, and the crosses connected by a double-dashed line indicate the movements of the pallet lifter 2. 2 shows the movement of the traverser 3 over time. And T ₁ is the first period of the traverser 1, t ₁₁ is time of the (7), t ₁₂ is time of the (1), t ₁₃ is time of the (2), t ₁₄ is the above (3) Time, T ₁ = t ₁₁ + t ₁₂ + t ₁₃ + t ₁₄
It is. T ₂ are periods of the second traverser 3, t ₂₁ is time of (11), t ₂₂ is time of (12), t ₂₃ is time of (8), t ₂₄ is time (10) a is a _{T 2 = t 21 + t 22} + t 23 + t 24. Period of T ₃ pallet lifter 2, t ₃₁ is time of the (4), t ₃₂
Is [(time of the above (5) × the number of mold members per pallet) + time of the above (6)], and t ₃₃ is the time of the above (9), and T ₃ = t ₃₁ + t ₃₂ + t ₃₃ + t _14. + T ₂₄ .

Therefore, the period T ₁ of the first traverser ₁
= (About 20 seconds) + (about 3 to 5 seconds) + (about 20 seconds) + (about 3 to 5 seconds) = about 46 to 50 seconds, cycle T ₂ of the second traverser 3 = (about 20 seconds) + (About 3 to 5 seconds) + (about 20
Seconds) + (approximately 3-5 seconds) = about 46-50 seconds = T _1.
On the other hand, the cycle T ₃ of the pallet lifter 2 = (about 3
Second) + [(approximately 3 to 5 seconds) × the number of mold members (n)] + (approximately 12
~ 15 seconds) + (about 3 seconds) + (about 3-5 seconds) + (about 3-5
Second), when the number of mold members (n) is large (for example, 20), T ₃ = approximately 84 to 131 seconds, which is much larger than T ₁ (T ₂ ). The loading operation was the rate-determining stage, and the operation cycle was performed at a cycle below the capacity limit of the operation speed of each device.

Therefore, even if the working time can be shortened in accordance with the margin of the operating capacity of each device, and even if the time which cannot be shortened is referred to as a loss time, the problem of generating the loss time is caused by the molding material unloading equipment. It does not do. In addition, since a large number of molds are conventionally loaded on one pallet, the total production quantity of the necessary molds can be secured even if the operation time per cycle is slightly longer, and the cost per mold is greatly affected. There was no.

[0016]

However, when the number of molds to be loaded on one pallet is reduced, for example, five, when applied to the above-mentioned conventional apparatus, T ₃ = about 39 to 39.
56 seconds, the average of which is about 47.5 seconds,
₁ (T ₂ ) is smaller than the average of about 48 seconds. Accordingly, the step indicating T ₁ (T ₂ ) is the rate-determining step, and as a result, the cycle of one cycle in the cycle for carrying out the mold material is T ₁ (T ₂ ). Then, as mentioned above,
Although the number of molds that can be carried out per cycle is drastically reduced, the time required for one cycle is not shorter than a certain level due to the limitation of the equipment capacity, and is not as short as the above-mentioned reduction rate of the number of molds per cycle. As a result, the total number of sections that can be carried out per day is reduced. Accordingly, the work flow between the devices becomes discontinuous, and a loss time occurs there.

Here, with respect to the point that the work flow becomes discontinuous between the devices and a loss time occurs, a mechanism thereof will be described with reference to FIG. The flow sheet shown in FIG. 4 basically allows the operations (3) and (10) to be continuously performed, and the operation of transferring an empty pallet from the first traverser to the pallet lifter is completed. This shows a process in which an actual pallet is transferred from the pallet lifter to the second traverser as soon as possible.

In FIG. 4, as soon as the pallet lifter on which the actual pallet is placed rises, the actual pallet is transferred from the pallet lifter to the second traverser. The empty pallets are transferred to the pallet lifter 2 and the pallet lifter 2 is lowered to the shape loading work position as soon as the pallet is completed. Thus if you, stoppage time t ₃₀ occurs after mold material loading end of the empty pallet.

Although not illustrated, as soon as the pallet lifter is lowered to the work position for loading the shape material, the work of loading the shape material into the empty pallet is performed. As soon as the pallet lifter on which the actual pallet is placed is lifted, the pallet lifter is moved. As soon as it rises, the actual pallet is transferred from the pallet lifter to the second traverser.
When the empty pallets are transferred from the traverser to the pallet lifter, a loss time is similarly generated after the transfer of the empty pallets from the first traverser to the pallet lifter.

Although not illustrated, the pallet lifter on which the actual pallet is placed rises, and as soon as the pallet lifter rises, the actual pallet is transferred from the pallet lifter to the second traverser. The empty pallet is transferred from the traverser to the pallet lifter, and as soon as the pallet is lifted, the pallet lifter 2 is lowered to the shape loading work position.
If the pallet lifter on which the actual pallet is placed is raised immediately after the end of the loading operation of the mold material, a loss time similarly occurs after the pallet lifter is raised.

Further, although not illustrated, (3) and (1)
If you try to perform operations other than 0) continuously,
Between (3) and (10), that is, the operation of transferring the actual pallet from the pallet lifter on which the actual pallet is placed to the second traverser, and the operation of transferring the empty pallet from the first traverser on which the empty pallet is placed to the pallet lifter. Loss time occurs between loading operations.

As described above with reference to FIG. 4, for example,
Also is T ₃ by the mold material loading time is shorter becomes how short, first traverser, pallet lifters,
Whatever the phase of each operation of the second traverser (the degree of temporal shift of one operation cycle between each device), the cycle of one cycle is inevitably the first traverser (the second traverser). Operation cycle T ₁ (T
₂ ) Could not be shorter.

Therefore, the present inventors pay attention to the above-mentioned loss time, and in view of the fact that this loss time is equivalent to the surplus of the apparatus capacity, first try to eliminate the loss time when shortening the time of one cycle. Tried. If the loss time is eliminated by shortening at least T ₁ (T ₂ ) to be equal to T ₃ , the cycle of one cycle is shortened first, and the waste of making the apparatus idle is also eliminated.
Therefore, the present inventors examined whether the traverser that took the longest time in the process of the rate-determining stage could be made to have a higher moving speed.

However, this is impossible with the current traverser drive mechanism, and there are various problems in increasing the speed of the traverser even if a completely different drive mechanism is used. That is, even if the speed of the traverser is increased, it is necessary to apply a brake to decelerate the traverser and to decelerate it. In order to shorten the deceleration time, it is necessary to review the brake system so that it has sufficient capacity to suppress the inertia force due to the heavy load of the traverser body that is considerably heavy, the empty pallet and the actual pallet, In addition, there is a problem that the running cost of the device is increased because the brake system is greatly consumed.

Further, if the traverser is moved at a high speed or a sudden brake is applied, the pallet or the like loaded on the traverser may slide or shift in position, and in extreme cases, may jump out of the traverser and become dangerous. In addition, there is a possibility that the mold material may be damaged. In addition, the work environment is deteriorated due to noise. To prevent such a situation, it is conceivable to temporarily fix the pallet or the like to the traverser by means such as chucking the pallet. However, the work is troublesome and time is required for temporarily fixing. If the device is covered with a soundproof hood to prevent noise, the equipment is expensive and still it is not possible to completely shut off the noise.

As described above, economical problems such as equipment costs, running costs associated with equipment operation and maintenance, work costs associated with work required, work environment problems such as noise and danger, and product quality such as mold material breakage. When considering the problems of
An effective means of shortening the cycle of the work cycle to increase the total amount of molding material per day even in high-mix, low-volume production, and not significantly reduce it compared to conventional small-mix, high-volume production. There was no.

In addition, in addition to the above, in the conventional method, the size of the pallet is only one type. Therefore, if the number of molding materials loaded per pallet is small, a lot of useless space is generated in the pallet, and the transportation efficiency is deteriorated. And as a result,
There was a problem that the transportation cost was high and the price of the mold material was high. In order to solve this problem, a pallet having a size corresponding to the number of pallets to be loaded may be used. However, a plurality of types of pallets can be separated for each size in a short time without violating the above-mentioned purpose (reduction of cycle time). In order to select and supply pallets, in conventional equipment, pallets must be divided and arranged in a plane according to size and stocked in a plane. In addition to the necessity, there arises a problem that the space above the space is wasted.

Therefore, the present inventors reexamined the flow of the pallets in the process of carrying out the molding material in the conventional equipment, and made a policy of using a pallet of an appropriate size according to the number of molding materials. As a result of earnest research based on the idea of changing the pallet flow according to this,
The present invention has been completed. That is, the present invention can shorten one unloading work cycle without transporting a pallet or a mold at a high speed, so that the apparatus used for transferring the mold is not burdened, and the mold can be damaged or the work can be performed without the mold popping out. It is possible to carry out a relatively large amount of molds even in multi-product, small-quantity production, without having to worry about colliding with people or other parts or generating noise due to the collision, and has excellent transport efficiency. It is an object of the present invention to provide a shape material carrying-out facility capable of carrying out a real pallet in a form and requiring no large installation space.

[0029]

According to the present invention, there is provided (1) an empty pallet storing / supplying system in which a plurality of empty pallet transfer devices capable of transferring and stopping an empty pallet are arranged in a height direction. The apparatus includes a pallet mounting table having an empty pallet transfer mechanism, and the pallet mounting table is moved to a position at which an empty pallet is received, a work position for loading a pallet above the empty pallet above the receiving position, and A pallet lifting / lowering device configured to be able to move up and down between the loaded pallets and the actual pallet unloading device, whichever is higher, and an empty pallet received from the empty pallet storage / supply device And an empty pallet standby device having an empty pallet transfer mechanism that can be transferred to a pallet mounting table in the pallet lifting device. The empty pallet standby device is installed between the end of the empty pallet storage / supply device and the pallet elevating device, and the pallet at the end of each transport device and the empty pallet receiving position in the empty pallet storage / supply device. (2) when the pallet mounting table is moved up to the shape loading operation position, the pallet mounting table is configured to be able to freely move up and down so as to be adjacent to each of the pallet mounting tables in the lifting device. The molding material unloading equipment according to the above (1), wherein an empty pallet storage / supply device, an empty pallet standby device, and a pallet elevating device are provided in the underground pit so that the pallet rises above the ground surface.
(3) The pallet mounting table is provided with a hollow lifter capable of ascending and descending such that the highest position is above the vicinity of the uppermost end of the pallet. (1) wherein the working position is always at the substantially uppermost position of the pallet.
Or (4) the molding material unloading equipment according to (2), (4) the molding material loading operation position is always set to a height of 700 to 1000 mm above the ground, and any of (1) to (3) above. The outline of the above-mentioned molding material unloading equipment is used.

[0030]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings. FIG. 5 and FIG. 6 are schematic side views showing one embodiment of the molding material unloading equipment of the present invention. As shown in FIG. 1, the molding material unloading equipment 10 of the present invention includes an empty pallet storage / supply device 20, a pallet lifting device 30, and an empty pallet standby device 40. In the drawing, 50 is an empty pallet, 60 is an actual pallet, 70 is an actual pallet unloading device, and 80 is a mold.

The empty pallet storage / supply device 20 is a device for sequentially supplying empty pallets 50 to the empty pallet standby device 40 when the empty pallets 50 are exhausted. If there is an empty pallet, two empty pallet transfer devices that can appropriately transfer and stop the empty pallets so that the supply of the empty pallets can be stopped by stopping the empty pallets and the empty pallets can be stored. 210 and 220 are arranged in the height direction.

Usually, empty pallets of different sizes are stored in each of the empty pallet transfer devices 210 and 220, respectively.
The empty pallet transfer devices 210 and 220 in which the empty pallets of each size are stored so as to sequentially supply the empty pallets 50 of an appropriate size selected according to the number of the shape materials to be loaded to the empty pallet standby device 40. Either one can be operated selectively.

The height h of each empty pallet accommodating portion of the empty pallet transfer devices 210 and 220 is usually set to a height corresponding to the height H of the empty pallet to be stored in each of them. There is no problem with storing empty pallets at high prices. However, in order not to waste space, it is preferable that h is slightly larger than H and approximately equal. In the figure, a higher empty pallet (usually a standard height size) is placed in the upper part 210, and a lower empty pallet (usually half the standard height size) is made in the lower part 220.
Is stored, but the vertical relationship is not limited to this.

It is preferable to prepare various sizes of the empty pallets 50 so as to be properly used according to the number of the shape members 80 to be loaded, but generally, two to three types are generally sufficient. That is, length L × width W × height H are respectively:
5000 × 1000 × 900 (unit mm), 5000
× 1000 × 600 (unit mm), 5000 × 100
Although it is 0x300 (unit mm), it is rarely used when the number of mold members is small. Therefore, when the number of molding materials is small, the above [standard height size] almost always means the above size, and the above [half the standard height size] almost always means the above size. means.

Then, for example, the empty pallet conveying device 210
Empty pallets 50 stored in the empty pallet standby device 40
When the empty pallet standby device 40 is placed adjacent to the end of the empty pallet transport device 210, the empty pallet transport device 210 and the pallet transfer mechanism 401 in the empty pallet standby device 40 are both operated to supply the empty pallet. 5
0 is transferred from the empty pallet transfer device 210 to the empty pallet standby device 40. When the empty pallet 50 is transferred from the empty pallet transfer device 220 to the empty pallet standby device 40, the same procedure as described above is performed. Empty pallet standby device 4
The details when 0 is adjacent to the empty pallet transfer device 210 (220) will be described later.

As the empty pallet conveying devices 210 and 220, conventionally known conveying devices such as a chain conveyor, a belt conveyor, and a roller conveyor can be used.

In the present invention, empty pallets are stored and stored.
As the supply device 20, three or more empty pallet conveyance devices may be arranged in the height direction.

By arranging a plurality of empty pallet transfer devices in the height direction, empty pallets are transferred to the pallet elevating device 30 by the empty pallet standby device 40 which can be adjacent to the pallet elevating device 30. It is possible. Therefore, both the pallet elevating device 30 and the empty pallet standby device 40 need only basically be able to perform the elevating operation, and need not have a complicated mechanism such as a fork mechanism, and can be a simple device mechanism.

Further, by disposing a plurality of empty pallet transfer devices in the height direction, the pallet elevating device 30 and the like can be placed and installed within the range of other device widths. Compared with a case where the devices are arranged in a plane such that they are arranged side by side in the longitudinal direction or the like, the required installation area can be reduced, which contributes to the effective use of the plane space and does not waste any space.

The pallet lifting / lowering device 30 receives the empty pallet 50 from the empty pallet standby device 40, raises it to the molding material loading operation position, and thereafter completes the molding material loading operation and removes the actual pallet 60 on which the molding material has been loaded.
Ru apparatus der for repeating a series of operations that the lifting or down until the transfer working position to a real pallet unloading device 70. The pallet lifting device 30 moves the pallet mounting table 310 having the pallet transfer mechanism 311 used for mainly receiving the empty pallet from the empty pallet standby device 40 to a position at which the empty pallet 50 is received , and a position above the receiving position. , mold material 8 to an empty pallet 50
It is configured to be able to move up and down between a loading operation position of 0 or a transfer operation position of the actual pallet 60 on which the shape material 80 is transferred to the actual pallet unloading device 70, whichever is higher.

Here, the pallet mounting table 310
The position where the empty pallet 50 is received from the empty pallet standby device 40 is usually a fixed position. Thus, empty pallets when the empty pallet standby unit 40, to be transferred and the position of the empty pallet standby unit 40 at the time of transferring the empty pallet 50 into the pallet table 310, the empty pallet 50 from the empty pallet conveying apparatus 210 or 220 The position of the standby device 40 may be different in height. Empty pallet standby device 4
Numeral 0 is freely movable up and down so that the empty pallet can be made adjacent to the empty pallet transport device 210 or 220 and the pallet mounting table 310 at the time of transferring the empty pallet.

As the elevating mechanism of the empty pallet standby device 40, a conventionally known mechanism such as a jack-up mechanism can be used. The lifting mechanism may be driven by a motor or the like or manually, but is usually driven by power.

The position of the pallet mounting table 310 where the empty pallet 50 is received from the empty pallet standby device 40 is as follows.
Normally, as shown in FIG. 5, for example, the height position of the empty pallet conveying device 210 (or any of the 220) is matched. In this way, when the empty pallet 50 is transferred from the empty pallet transfer device 210 to the empty pallet waiting device 40 via the empty pallet transfer device 210 via the empty pallet holding device 40 at least. The pallet 50 is moved to the pallet mounting table 3 without changing the height position of the empty pallet standby device 40.
10, and the lifting operation of the empty pallet standby device 40 can be minimized, which contributes to shortening the empty pallet transfer operation time.

Regarding that the empty pallet standby device 40 is made to be adjacent to the empty pallet transfer device 210 or 220 or the pallet mounting table 310 during the transfer of the empty pallet, the term “adjacent” means that each of the adjacent devices is By making the empty pallet 50 smoothly move between the devices on both sides sandwiching the adjacent part, regardless of contact or non-contact, and when the transfer mechanism of each device consists of a chain conveyor or a roller conveyor In such a case, for example, as schematically shown in FIG. 5, the chain portions and the roller portions may be in a state of being "inserted" with each other. In FIG. 5, the empty pallet standby device 40
The left end of the pallet transfer mechanism 401 is the right end of the empty pallet transfer devices 210 and 220 and the pallet transfer mechanism 4
The right end of 01 is configured to be in contact with the left end of the pallet transfer mechanism 311 in the pallet mounting table 310, respectively.

FIG. 7 shows an example of the above structure.
FIG. 2A shows the structure of the “sleeve” when a chain conveyor is used as a transfer mechanism, and FIG. 2B shows the structure of the “sleeve” when a roller conveyor is used as a transfer mechanism. (C) is a top view which shows the structure of "the stake" when the belt conveyor is used as a transfer mechanism, respectively. In the figure, A indicates a chain, B indicates a roller, and C indicates a belt. In any of the above cases, any number of single chains, single rollers, or single conveyors may be used.

The empty pallet standby device 40, as described above, stores the empty pallet 50 in the empty pallet storage / supply device 2.
From the empty pallet storage / supply device 20. The device for receiving the empty pallet from the empty pallet storage / supply device 20. Until the pallet is transferred to the pallet mounting table 310, the pallet transfer mechanism 401 provided therein is stopped, and the received empty pallet 50 can be kept on standby.

In the empty pallet standby device 40, when the height position when the empty pallet 50 is received from the empty pallet storage / supply device 20 and the height position when the empty pallet 50 is passed to the pallet lifting device 40 are different, Pallet lifting device 40
Is moved up or down to a height position (empty pallet receiving position) for transferring an empty pallet to the pallet. Here, it is preferable that the lifting / lowering operation of the empty pallet standby device 40 be performed during the standby time because it can contribute to a reduction in the empty pallet transfer time and a reduction in the total work cycle time.

This also means that the selection of the size of the empty pallet is performed before the pallet lifting / lowering device reaches the empty pallet receiving position. For example, the total work cycle time can be reduced by the time required for selecting the size of the empty pallet, which greatly contributes to the reduction of the cycle time.

In the above description, the molding material loading work position means that the molding material 80 conveyed on the molding material conveying device 810 and carried out onto the molding material aligning table 820 is placed on the empty pallet 50.
And is usually set to be at a height from the waist to below the chest of the worker. Therefore, when the worker stands on the ground surface and performs the work, the above-mentioned work position for loading the mold material is usually about 700 to 1 from the ground.
000 mm, preferably 800-900 mm. Further, in the present invention, it is not limited to the case where the height position is designed so that the mold material loading worker stands on the ground and performs the work, and if the worker works on the work table or the like, If so, the working position is
The height from the ground surface is usually the sum of the above height and the height of the worktable.

The actual pallet unloading device 70 is provided with a pallet transfer mechanism 701 for pulling out the actual pallet 60 after the work of loading the mold material from the pallet mounting table 310 of the pallet lifting device 30. It is configured so that the pallet 60 can be taken out and carried out. This actual pallet unloading device 70
As for the empty pallet transfer device 210 (220), the same device can be used.

In the present invention, the actual pallet unloading device 7
The height position of the upper surface of the pallet is set to be the same as the height position of the upper surface of the pallet placing table 310 at the work material loading operation position. In such a case, the pallet transfer mechanism 311 of the pallet mounting table 310 and the actual pallet unloading device 70 may be operated at the same time.
Therefore, the actual pallet unloading device 70 does not need to be provided with the pallet transfer mechanism 701.

However, here, the pallet table 31
In order to avoid deteriorating the capacity of the apparatus by spending time for banding and packing of the loaded material on the pallet 0, the actual pallet 60 is first transferred to the actual pallet unloading apparatus 70 independent of the cycle of the work cycle. However, if the band fastening and the packaging are performed on the actual pallet unloading device 70, the cycle period can be further reduced.

In order to do so, the height position of the actual pallet unloading device 70 is adjusted to a height position suitable for the above-mentioned band band tightening and packaging work (having a height of about 600 to 9 from the back of the operator's foot).
00 mm, preferably about 700 to 800 mm), and the actual pallet unloading device 70
When the actual pallet 60 is transferred to the pallet mounting table 310, the pallet mounting table 310 is moved up or down to move the end of the pallet to a height position adjacent to the end of the actual pallet unloading device 70, and then the pallet is moved horizontally. Or transfer it to
Alternatively, as shown in FIG.
Is provided with a pallet transfer mechanism 701 configured to be able to move horizontally and vertically, and when transferring the real pallet 60 from the pallet mounting table 310 to the real pallet unloading device 70, The actual pallet 60 on the mounting table 310 may be transferred to the actual pallet unloading device 70 without moving the pallet mounting table 310 as it is.

As the pallet transfer mechanism 701 in the actual pallet unloading device 70 which can be moved horizontally and vertically, for example, a fork mechanism in a forklift or the like can be used.

FIG. 6 is a view showing the entirety of the empty pallet storage / supply device 20 connected to the left end of the equipment shown in FIG. 5 in the embodiment of the equipment of the present invention. In FIG.
0 indicates that the empty pallets 50 conveyed by the empty pallet carry-in device 920 such as a conveyor are stored in the empty pallet storage /
An empty pallet supply table for supplying the empty pallet to the supply device 20, and is provided adjacent to an end of the empty pallet storage / supply device 20.

As the empty pallet supply table 910, the same as the lifting mechanism in the empty pallet standby device 40 described above can be used. The lifting operation may be powered or manually operated, but is usually powered.

Reference numerals 211 and 221 denote pallet transfer mechanisms for receiving the empty pallets 50 received by the empty pallet supply table 910 into the empty pallet storage / supply device 20, respectively. 20 is provided in each empty pallet transfer device 210, 220.

Specifically, the empty pallet supply table 910 is
The empty pallet storage / supply device 20 can be set at a height position adjacent to both ends of the empty pallet transfer devices 210 and 220, and at a height position adjacent to the end of the empty pallet loading device 920. It is configured to be able to move up and down freely. The empty pallet carry-in device 920 is installed at a position where the end thereof is adjacent to the vertical range of the empty pallet supply table 910. That is, the empty pallet supply table 9
The empty pallet loading device 920 is provided at a position where it can be made to be adjacent to the end of each empty pallet conveying device 210, 220 by adjusting the elevation height. The pallet 910 is provided at a position where the height of the pedestal 910 can be adjusted so as to be adjacent to the end of the empty pallet carrying device 920.

Here, the empty pallet loading device 920
Even includes empty pallets carrying direction by the pallet conveying apparatus 920, is installed so that the empty pallet conveying direction coincides in the pallet conveying apparatus 210 or the like,
They may be installed so that they do not match . 6, an empty pallet loading apparatus 920, the air pallet carrying instrumentation
Empty pallet carrying-direction by location 920 is installed such that the perpendicular transverse to empty pallet conveying direction of the pallet conveying apparatus 210, 220 or the like. That is, the empty pallet transport direction of the pallet transport devices 210 and 220 and the like is the right side of the paper in the drawing, while the empty pallet transport direction of the empty pallet loading device 920 is the depth (or front) side of the paper in the drawing. ing. With this configuration, the length of the entire carry-out line does not increase, so that the installation space of the line can be reduced.

[0060] as a pallet transfer mechanism 211 and 221
It is in the actual pallet unloading device 70, horizontal movement and vertical movement and the possibility constructed pallet transfer mechanism 701
Similarly, for example, a fork mechanism in a forklift or the like can be employed .

8 and 9 are views showing an example of the pallet lifting device 30. FIG. 8 is a side view of the pallet lifting device 30, and FIG. 9 is a front view (as viewed from the actual pallet unloading device 70).
FIG. The pallet lifting device 30 is guided by a support guide 322 provided on the pedestal 321, and
A column 323 provided to be vertically movable with respect to 1.
A support 324 provided below and supported by the pallet mounting table 310 at an interval therefrom is provided at the upper end of the pallet mounting table 310, and a shaft provided on the pedestal 321 and / or the support guide section 322 is provided. A rotation shaft 326a, on which a pinion gear 326 is axially mounted, is rotatably supported on the rotation shaft 325, and an arbitrary rotation driving force is transmitted as necessary, for example, by connecting a rotation shaft such as a motor to the rotation shaft. A gear 327 that fits with the teeth of the pinion gear 326 is formed in a portion of the support 323 facing the pinion gear 326 in the vertical direction. (An enlarged view is shown in the lower right frame in the figure), the gear 327 is fitted with the teeth of a pinion gear 326, and the pinion gear 326
Is rotated, the support 324 is raised or lowered together with the support 323 depending on the direction of rotation, and the pallet mounting table 310 is raised or lowered (this mechanism is generally called a rack and pinion).

Further, the hollow lifter 3 is provided on the support 324.
28, and the hollow lifter 328 is provided with a lifting bar 330 which is guided by a lifting bar guide 329 and is provided to be vertically movable with respect to the support 324.
Is provided at the upper end of the support 324.
And / or a shaft mount 3 provided on a lifting bar guide portion 329
32, a rotation shaft 333a having a pinion gear 333 axially mounted thereon.
So that a rotational driving force can be applied to the pinion gear 333 via an arbitrary rotational driving force transmission mechanism as needed, for example, by connecting a rotating shaft such as a motor to the rotating shaft of the pinion gear 333. A gear 334 that fits with the teeth of the pinion gear 333 is formed vertically at a portion of the lifting bar 330 that faces the pinion gear 333 (the enlarged view is a lower right frame in the drawing). The gear 334 is fitted with teeth of a pinion gear 333, and by rotating the pinion gear 333, the mold receiving base 331 rises or falls depending on the direction of rotation, and the lifting bar 330 rises or falls. It has a rack and pinion configuration in which the mold receiving large 331 rises or descends.

A portion corresponding to the position of the hollow lifter 328 near the center of the pallet mounting table 310 is hollowed out at least to a size corresponding to the size of the die receiving base 331 of the hollow lifter 328. The lifter 328 is in the same state as if it were hollowed or substantially hollowed out, so that the shape receiving table 331 of the hollow lifter 328 can be raised above the surface of the pallet mounting table 310.

In the hollow lifter 328, as shown in FIG. 10, the shape receiving table 331 is so arranged that the width thereof expands and contracts in the pallet width direction, and the both sides in the width direction slide outward on both sides in the pallet width direction. It is configured. The slide is performed by supplying air to or removing air from the air cylinder 335. The maximum width of the mold receiving table 331 when the both sides in the width direction are slid and extended is larger than the pallet width, and the minimum width when contracted is slightly smaller than the pallet width.

Here, reference numeral 336 denotes a member for converting the force received from below in the horizontal direction.
It is provided such that when it is extended, it is inclined with respect to the vertical direction (or the horizontal direction). When the mold receiving table 331 is lowered into the pallet in a state of being extended in the width direction, the member 336 hits both the frame portions 51 and 52 in the width direction of the pallet. When the member 336 is lowered as it is, the member 336 is tilted in the direction of the arrow r by the action of the inclined surface of the member 336, and accordingly, the extending portions on both sides of the mold receiving base 331 are slid in the direction of the arrow s.

At this time, the supply of air to the air cylinder 335 is stopped, and the residual air is
When the external air 37 is pressed by an external force, the air is naturally released. However, since some external force is required for the residual air to escape, a buffer effect is generated here, and
The sliding movement of the extended portions on both sides in the direction of arrow s is performed slowly but smoothly with some resistance.

The blank receiving member 331 of the hollow lifter 328
Is configured as described above, even if the shapes are piled up on the shape receiving base 331 outside the width of the pallet 50, when the shape receiving base 331 descends, both sides of the pallet are Since the both sides of the mold receiving base 331 are slid to reduce the overall width by hitting the frame parts 51 and 52 in the width direction, the moldings on the mold receiving base 331 are also aligned within the full width of the pallet accordingly. Therefore, there is an effect that the pallets can be reliably accommodated in the empty pallet without damaging the pallets or the pallets and in a state where the pallets are aligned.

In the present invention, the hollow lifter 3
28 is not required. However, a hollow lifter 328 that can be raised and lowered so that the highest position is above the vicinity of the uppermost end of the pallet is provided, and by sequentially lowering the hollow lifter 328, the position of the pallet is constantly maintained during the loading operation of the pallet. It is preferable to configure the pallet so as to be located at the substantially uppermost position. In this case, when loading the dies on the empty pallet, the pallet loading work position is always at a constant height near the pallet uppermost end. There is an advantage that the loading operation can be performed easily without the side frame being disturbed, and the loading efficiency can be improved.

In the above, the work position for loading the mold material is
To be set at a height of 700 to 1000 mm above the ground,
More preferably, the hollow lifter 328 is configured to descend sequentially. With this configuration, the shape loading operation is always at a height of 700 to 1000 mm above the ground, which corresponds to a height in the range from the waist to below the chest, and is suitable for the shape loading operation. It is possible to expect the effect of reducing fatigue and accidents and improving work efficiency.

Further, in the above, the pallet lifting device 3
0 is configured such that the height of the pallet mounting table 310 can be arbitrarily selected according to the type of pallet height so that the substantially uppermost end of the pallet is automatically adjusted to the height of the work material loading operation position. With this configuration, the height of the uppermost end of the pallet when the pallet is lifted is changed according to the type of the pallet, so that the pallet of any type can be loaded. There is an effect that the working position can be set to the appropriate fixed position.

Further, in transferring the empty pallet 50 from the empty pallet storage / supply device 20 to the empty pallet standby device 40, the empty pallet standby device 40 adjacent to the empty pallet transfer device in which the desired empty pallet 50 is stored.
It is preferable that the height of the pallet mounting table 310 is automatically determined according to the size of the desired empty pallet selected to determine the height of the pallet. In such a case, When the empty pallets are transferred from the empty pallet storage / supply device 20 to the empty pallet standby device 40, the empty pallets in which the desired empty pallets are stored are transported based on the selection result of selecting the empty pallets of a desired size. When the height of the empty pallet standby device 40 adjacent to the device is determined, the required height of the pallet mounting table 310 of the pallet elevating device 30 is automatically determined based on the selection result. There is no need to determine and operate the height of the rise of 310, and there is an advantage that the operation can be omitted.

8 and 9, the pallet table 3
The pallet transfer mechanism 311 provided in FIG.
As shown in FIG. 9, a chain conveyor is used (an enlarged view is shown in the figure in the frame of FIG. 9, and D represents a chain). As the transfer mechanism 311, any mechanism may be used as described above. . Since the pallet mounting table 310 is provided with the transfer mechanism 311, a portion corresponding to the position of the hollow lifter 328 near the center of the transfer mechanism 311 is at least a part of the hollow lifter 32.
8 is hollowed out or substantially in the same state as the hollowed-out lifter 328 of the pallet transfer mechanism 311. It can rise above the surface.

Next, a process of carrying out a mold using the mold carrying-out equipment of the present invention will be described. FIG. 11 shows the equipment 10 of the present invention.
FIG. 3 is a process diagram showing an outline of a mold material unloading process using the method. As shown in the drawing, first, the empty pallets 5 transferred from the empty pallet storage / supply device 20 to the empty pallet standby device 40.
0 is transferred to the pallet mounting table 310 of the pallet lifting device 30 (FIG. 7A). Next, the pallet table 3
10 is raised to the molding material loading operation position, and in the molding material loading operation position, the molding material 80 is loaded from the molding material alignment table 820 onto an empty pallet (FIG. 9B). afterwards,
The real pallet 60 is transferred to the real pallet unloading device 70 by the pallet transfer mechanism 701 of the real pallet unloading device 70 (FIG. 3C). When the transfer of the actual pallets 60 is completed, the pallet mounting table 310 is lowered to the empty pallet receiving position, where another new empty pallet 50 is placed.
Is transferred from the empty pallet standby device 40 (FIG. 4D). In this manner, a series of operations are repeatedly performed.

The operation of each device of the facility of the present invention in the above series of operations will be described in more detail with reference to FIGS. First, a case where an empty pallet to be used is selected according to the size of the mold material and the selected empty pallet 50 is stored in, for example, the empty pallet transfer device 210 in the empty pallet storage / supply device 20 is shown in FIG. As such, the empty pallet waiting device 40 is raised or lowered so that it is at a level adjacent to the end of the empty pallet transport device 210 where the selected empty pallet is stored.

Then, the empty pallet transfer device 210 is operated, and the pallet transfer mechanism 401 of the empty pallet standby device 40 is operated, so that the empty pallet 50 is transferred from the empty pallet transfer device 210 to the empty pallet standby device 40. Let me do.

In the empty pallet 50, the pallet mounting table 310 of the pallet elevating device 30 is placed at the empty pallet receiving position (usually, the fixed position as described above. In this embodiment, the height of the empty pallet transfer device 210 is (It is at the same height as the position), and is kept waiting on the empty pallet waiting device 40.

After the pallet mounting table 310 is lowered to the empty pallet receiving position to be adjacent to the empty pallet standby device 40, the pallet transfer mechanism 401 of the empty pallet standby device 40 and the pallet transfer mechanism 311 of the pallet mounting table 310 Are operated together, and the empty pallet 50 is transferred from the empty pallet standby device 40 to the pallet mounting table 310.

Next, as shown in FIG. 13, the pallet mounting table 310 is raised, so that the empty pallet 50 is raised to the molding material loading work position. In this loading position of the molding material, the molding material 80 is
0 is loaded on the empty pallet 50 on the pallet mounting table 310, and the empty pallet is the actual pallet 6 on which the shape material is loaded.
It is set to 0. During this time, the empty pallet standby device 40 in which the empty pallet is no longer present due to the above operation
The operation of supplying another new empty pallet from the empty pallet storage / supply device 20 is performed on the upper side, and the new empty pallet 50 is made to stand by on the empty pallet waiting device 40. The supply of the empty pallets 50 to the empty pallet standby device 40 is performed as described above.

The work of loading the mold material 80 on the empty pallet 50 may be performed manually by an operator, or may be performed by using a mold material transfer device disclosed in Japanese Utility Model Laid-Open No. 6-1343. However, the time required for loading the mold material is slightly different between the case of manual work and the case of the above-mentioned mechanical work, and there is a slight difference between the two depending on the number of mold materials loaded per pallet. When mold material number stowed per pallet is small, but who the former method is advantageous in shortening the time, since the possible Rashimeru to completely automate the mold material loading work in the case of the latter, This is advantageous in terms of stabilizing the production amount by reducing the work labor and stabilizing the work efficiency.

Next, as shown in FIGS. 14 and 15, the real pallet 60 is transferred from the pallet mounting table 310 onto the real pallet unloading device 70 by the pallet transfer mechanism 701 of the real pallet unloading device 70. You. Here, as described above, the height position of the actual pallet unloading device 70 is set to a height position suitable for the banding and packaging work of the pallet (approximately 600 to 900 mm, preferably about 700 to 900 mm above the back of the operator's foot). 800mm) and set the pallet table 3
When transferring the real pallet 60 from 10 to the real pallet unloading device 70, the pallet mounting table 310 is raised or lowered to move the end to a height position such that the end is adjacent to the end of the real pallet unloading device 70. the actual pallet 60 by transfer in the horizontal direction or transfer, or Figure 5,1
1, 13-16 , the actual pallet unloading device 7
0, may be provided a pallet transfer mechanism 701 that is configured to allow the horizontal movement and the vertical movement, the pallet mounting base 310
When the real pallet 60 is transferred from the pallet to the real pallet unloading device 70, the pallet mounting table 310 is not moved up and down while the pallet mounting table 310 is in the work loading position.
If the upper actual pallet 60 is transferred to the actual pallet unloading device 70, and the banding and the packaging work are performed after the actual pallet 60 is transferred to the actual pallet unloading device 70, the work cycle time is significantly reduced. It is preferable because it can be shortened.

In FIGS. 14 and 15, the above arrangement of the apparatus and the method of transferring the actual pallets are employed, and the actual pallet unloading apparatus 70 is set to a position slightly lower than the appropriate molding material loading position. The pallet mounting mechanism 701 is used to transfer the actual pallet 60 while the pallet mounting table 310 is not moved from the mold material loading operation position. As the pallet transfer mechanism 701 in this case, a mechanism similar to a fork mechanism in a forklift is adopted, but here, the height position of the actual pallet 60 is such that the bottom 61 is the height position of the actual pallet unloading device 70. Specifically, as the mechanism, first, the fork claw p is lowered (the fork claw p is
If than the bottom 61 is in the upper position), then plugging the lower side of the bottom portion 61 of the actual pallet 60 in the fork claw p by horizontally moving mold material loading work position (FIG. 14
(A)). Then , the fork claw p is
To the fork claw moving means (not shown)
Therefore, the actual pallet 60 is positioned on the actual pallet unloading device 70.
The fork claw p is retracted until it comes to
Is horizontally moved to a real pallet unloading device 70 side (FIG. 14
(B)) Thereafter, the fork claw p is lowered to lower the actual pallet 60 onto the actual pallet unloading device 70 (FIG. 1).
5) What is configured to be able to do so is adopted.
Incidentally, the fork claw p and the actual pallet unloading device 70 are
It has a "reiko" structure like
Can descend below the upper surface of the actual pallet discharge device 70
And the fork claw p is
By lowering to a position below the upper surface, the actual palette
To be placed on the actual pallet unloading device 70
Has become.

Next, as shown in FIG. 16, the real pallet 60 transferred from the pallet mounting table 310 is moved on the real pallet unloading device 70 in the unloading direction. On the other hand, the pallet mounting table 310 from which the actual pallets 60 have been removed is lowered to the empty pallet receiving position, where another new empty pallet 50 waiting on the empty pallet standby device 40 is replaced with the empty pallet standby device 40. From the pallet mounting table 310.

By repeating the series of operations described above, a series of unloading operations is performed.

In order to supply the empty pallets 50 to the empty pallet storage / supply device 20, first, the empty pallet loading device 9
The empty pallet 50 conveyed by the pallet 20 is lifted to the height position of the empty pallet carry-in device 920 and placed on the empty pallet supply table 910 whose ends are adjacent to each other,
Next, the empty pallet 50 on this empty pallet supply table 910
Pallet transfer device 211 (221) of the empty pallet transfer device 210 (220) is lifted up and taken up by the pallet transfer mechanism 211 (221).
Transfer to the top.

FIG. 17 shows a cycle of the above series of operations. In the figure, T is a cycle of one cycle, t ₁ is a time required for lowering the pallet mounting table 310 in the pallet elevating device 40 to the empty pallet receiving position, and t ₂ is a time required to move the empty pallet 50 from the empty pallet standby device 40. The time required for the transfer to the pallet table 310,
t ₃ is the time required to raise the pallet placing table 310 to the work position for loading the form material, t ₄ is the time required for loading the form material 80 on the empty pallet 50, and t ₅ is the time required to move the actual pallet 60 from the pallet placing table 310 to the actual pallet. The time required for the work to be transferred to the unloading device 70 is shown.

As described above, the conventional transfer (transfer) mechanism is used for transferring (transferring) empty pallets and actual pallets between the respective devices. Almost equivalent. In addition, the lifting speed of the pallet mounting table 222 is the same as that in the case of using the conventional pallet lifter.
m), which is slightly longer than usual (usually at least about 1
From about 000 mm), the time required for raising and lowering is about 3 seconds in the conventional equipment as described above,
In the facility of the present invention, about 5 seconds and about 2 seconds are required.

When these are arranged, t ₁ = about 5 seconds, t ₂
= About 3 to 5 seconds, t ₃ = about 5 seconds, t ₄ = about 3 to 5 seconds / line,
t ₅ = approximately 3 to 5 seconds.

Then, the loaded shape members are band-tightened,
Assuming that the packaging operation is performed on the actual pallet unloading device 70, if the average number of pallets loaded per pallet is, for example, five, T = [t ₁ + t ₂ + t ₃ +
(5 × t ₄ ) + t ₅ ] = (about 5 seconds) + (about 3 to 5 seconds) +
(About 5 seconds) + [5 x (about 3 to 5 seconds)] + (about 3 to 5 seconds)
= 31 to 45 seconds. Here, as described above, the time required for banding and wrapping of the mold material is about 12 to 15 seconds, which is smaller than the above-mentioned about 31 to 45 seconds, and can be sufficiently performed within the above-mentioned cycle time. Also, the time required to transfer the empty pallets from the empty pallet carrying device 920 to the empty pallet transporting device 20 is shorter than the above-mentioned about 12 seconds per pallet. Therefore, the above-mentioned cycle time of about 31 to 45 seconds (about 38 seconds on average) is the cycle time in this case, and the time required for unloading the same number of sections using the conventional equipment [ie, T ₁ (T ₂ ) If T _{3 is} the larger one and the number of the shape members is 5, the value of T ₁ (T ₂ ) = about 46
-50 seconds, average 48 seconds].

To what extent this cycle time can be shortened, calculation is made for each case by changing the number of molds. When the average number of molds loaded per pallet is 7, T = about 37 to 51. About 4 seconds on average
4 seconds, T ₁ (T
₂ ) or T ₃ , whichever is greater [T ₁ (T ₂ ) = about 4
6 to 50 seconds, T ₃ = (about 3 seconds) + (about 3 to 5 seconds) × 7 +
(About 12 to 15 seconds) + (about 3 seconds) + about 3 to 5 seconds) + (about 3 to 5 seconds) = about 45 to 66 seconds] = about 45 to 66 seconds, and about 55.5 on average. Since this is seconds, the use of the equipment of the present invention is advantageous in terms of time, about 11.5 seconds per cycle.

When the average number of pallets loaded per pallet is three, T = about 25 to 35 seconds, which is about 30 seconds on average. On the other hand, when the conventional equipment is used, the average is about 30 seconds. Since it is about 48 seconds (since it is known from the above that it depends on T ₁ (T ₂ )), the use of the equipment of the present invention has a significant advantage of about 18 seconds in time. I understand.

Further, the case where the number of mold members is relatively large is examined. When the number of mold members is 20, T = (about 5 seconds) + (about 3 to 5 seconds)
+ (About 5 seconds) + [20 × (about 3 to 5 seconds)] + (about 3 to 5
Second) = about 76 to 120 seconds, which is about 98 seconds on average, whereas T ₁ (T ₂ ) or T _{3 in} the case of using the conventional equipment
Whichever is greater [T ₁ (T ₂ ) = about 46 to 50
Sec, T ₃ = (approximately 3 seconds) + (approximately 3-5 seconds) × 20 + (about 1
2 to 15 seconds) + (about 3 seconds) + (about 3 to 5 seconds) + (about 3 to
5 seconds) = approximately 78 to 121] = approximately 84 to 131 seconds, which is an average of approximately 107.5 seconds. Therefore, when the equipment of the present invention is used, it is still approximately 9.5 seconds, It is advantageous. Thereafter, even if the number of mold members exceeds 20 and the number increases, the use of the equipment of the present invention can reduce the average by about 9.5 seconds as compared with the case of using the conventional equipment. This reduction of about 9.5 seconds is a very large reduction. In particular, when the number of molds is small, the work time is significantly shortened.
It has a significant effect on production efficiency.

That is, taking the case where the number of mold members is five as an example, when the equipment of the present invention is used, five mold members are carried out in about 38 seconds. Therefore, with full operation for 8 hours a day, 5
× (8 × 60 × 60 ÷ 38) = 3789 pieces can be carried out. On the other hand, when the conventional equipment is used, it is operated at full capacity for 8 hours a day and 5 × (8 × 60 × 60).
(# 48) = Only 3000 molds can be carried out. If the number of mold members is smaller, the difference is larger.

[0093] When the average number of pallets loaded per pallet is 20 using the conventional equipment,
As described above, 20 pieces are unloaded in about 107.5 seconds. According to this, full operation 8 hours a day, 20 ×
(8 × 60 × 60 / 107.5) = 5358 mold members have been carried out. Therefore, at this point, if the number of molds per pallet is reduced due to the production of many kinds and small quantities, the total output amount per day (total production amount) is inevitably reduced. However, when comparing the equipment of the present invention with the conventional equipment for the case where the number of molding materials per pallet is the same, it is always better to use the equipment of the invention than to use the conventional equipment, regardless of the size of the number of molding materials. Because the total production volume can be increased, the equipment of the present invention is not only effective for high-mix, low-volume production, but also for small-mix, high-volume production, the same or slightly higher productivity as the conventional equipment. Are better.

Further, according to the present invention, a pallet of a desired size can be supplied in accordance with the number of molding materials without affecting the work cycle time as described above, so that the work cycle is shortened. The efficiency of transportation can be further increased without diminishing the effect, and the supply to the market can be substantially increased significantly.

More specifically, if only 10 pallets can be stored, for example, 20 pallets, the transport efficiency is reduced to 1/2 simply. Therefore, as a pallet for accommodating ten mold members, a pallet capable of accommodating ten mold members is most efficiently transported. In the present invention, it is possible to select and use a pallet having a size that does not cause useless storage space as much as possible according to the number of the shape members without affecting the work cycle time. The effect of improving the transport efficiency can be obtained at once.

Therefore, when viewed comprehensively, according to the present invention, in terms of the supply amount of the molding material to the market and the molding material cost,
Compared with the conventional case of mass production with a small number of dies and a large number of molds loaded per pallet, it is possible to realize and maintain a production amount and cost that are not inferior thereto.

In the molding material unloading equipment of the present invention, an empty pallet is supplied from an empty pallet storage / supply device to an empty pallet standby device, and then supplied from the empty pallet standby device to a pallet mounting table in a pallet elevating device. Raise the pallet mounting table to raise the empty pallet to the molding material transfer work position where the molding material is transferred.After the manual material transfer operation, the actual pallet on which the molding material is transferred is manually operated by the manual switch operation. It is preferable that the above-mentioned series of operations for transferring the pallet to the pallet unloading device and lowering the pallet mounting table to the empty pallet receiving position be automatically and sequentially repeated.

In order to automatically perform the above-described series of operations, in the present invention, although not particularly shown,
It can be configured as follows. That is, a first sensor that senses when the pallet table is lowered to the pallet receiving position and a second sensor that senses when an empty pallet is received at a fixed position in the empty pallet standby device. A sensor, a third sensor for sensing when the empty pallet has reached the fixed position of the pallet placing table, and a third sensor for detecting when the empty pallet placed on the pallet placing table has reached the work transfer position. A fourth sensor for sensing the electric current is provided, and the first sensor, the second sensor, and the third sensor are electrically connected to a power source and an operating power unit of a pallet transfer mechanism in the empty pallet standby device, respectively. The empty pallet standby device receives electric signals from the first sensor, the second sensor, and the third sensor, and receives the electric signals from the first sensor, the second sensor, and the third sensor. When and pallet mounting base in a state in which empty pallets is placed pallets in position and the pallet table In the empty pallet receiving position is not in a state of being reached,
The pallet transfer mechanism is operated to keep moving the empty pallet, and otherwise stops and stops the empty pallet except for being operated by manual operation.

At the same time, the second sensor, the third sensor, and the fourth sensor are electrically connected to a power source and an operation power unit of a pallet transfer mechanism in the pallet mounting table, respectively. When the pallet table is lowered to the pallet receiving position in response to the electric signal from the second sensor, the empty pallet transfer mechanism in the pallet table operates to receive the empty pallet, and receives the electric signal from the third sensor. The pallet transfer mechanism stops when the empty pallet arrives at the fixed position of the pallet mounting table in response to the signal, and then the pallet mounting table rises to raise the empty pallet, and the electric signal from the fourth sensor is transmitted. When the empty pallet placed on the pallet table reaches the work transfer position, the pallet table stops and the manual switch is When the pallet table lowered by the operation receives the electric signal from the first sensor and reaches the empty pallet receiving position, the pallet table stops and the empty pallet transfer mechanism in the pallet table operates to empty the pallet table. Configure to receive pallets.

As each of the above-mentioned sensors, a conventionally known sensor such as a distance sensor for detecting a position or a pressure sensor for detecting a contact state is used in order to determine whether or not the pallet has reached a fixed position. Can be.

When a light sensor such as an infrared sensor is used to detect that the pallet has reached a fixed position, a pressure sensor is used at a position where the light path is not interrupted. In such a case, any portion of the pallet that comes into contact with the pallet at the position when the pallet is reached to the home position may be on any device in the equipment of the present invention, and may be used without being provided directly on the device. It may be provided at a remote position.

In the present invention, as shown in FIGS. 5 and 6, an empty pallet storage / supply device is provided so that the pallet mounting table rises above the ground surface when the pallet mounting table is raised to the work loading position. Preferably, an empty pallet waiting device and a pallet lifting device are provided in the underground pit.

According to the above configuration, most of the devices constituting the equipment are buried underground and there are few portions protruding above the ground surface, so that the space above the ground surface and the space above the ground surface is reduced. It can be used effectively, and since each device does not exist above the ground surface, a sufficient passage for workers can be ensured, work efficiency can be improved, and the body is caught in the machine part of each device when carrying out the mold material removal work, It is possible to prevent the user from being injured by hitting the body with the device. In addition, there is the effect that the apparatus does not fall or collapse at the time of a disaster such as an earthquake, thereby exposing workers to danger and also ensuring a refuge.

[0104]

As described above, according to the present invention, originating <br/> Ming type material unloading equipment according to claim 1, and an empty pallet storage and supply device empty pallet conveying apparatus of a plurality machine was arranged in the height direction Pallet lifting device having a pallet table that can be raised and lowered,
A pallet standby device capable of being moved up and down, which can be made adjacent to each of the pallets, for transferring the empty pallets from the empty pallet storage / supply device to the empty pallet standby device, and then to the pallet mounting table, A conventional pallet in which the actual pallet in which the shape material is loaded at the shape material loading position is transferred to the actual pallet unloading device by raising the mounting table to the shape material loading position, and And the traverser used in conventional equipment is not used, so that the time required for one work cycle can be made independent of the equipment capacity, and as a result, Even when the number of loaded form materials is small, work is restricted by the time limit due to the limit of equipment capacity. Without that the can not be shortened from a certain degree while, can shorten the unloading operation time per cycle in accordance with the number.

Further, since it is not necessary to suddenly move or stop the actual pallet in a state in which the pallets are loaded in the horizontal direction, it is necessary to perform banding and packaging of the pallets. This operation can be performed after the transfer from the mounting table to the actual pallet unloading device, so that there is an effect that one operation cycle can be further reduced.

Further, since the empty pallets are stored in the height direction, a desired pallet can be supplied to the molding material loading position by the pallet elevating and lowering device and the empty pallet standby device, without impairing the above-mentioned effects. In addition, it is possible to supply a pallet of an appropriate size according to the number of molding materials loaded per pallet without requiring a large stock space. As a result, effective use of space can be achieved, and real pallets in a form with good transport efficiency can be supplied in a short time, so that there is an effect that the transport cost can be reduced and the supply amount to the market can be substantially increased.

According to the molding material unloading equipment according to the first aspect of the present invention, even if the average number of molding materials loaded per pallet is reduced due to the production of many kinds and small quantities,
Compared to the case where conventional equipment is used, the total number of molds that can be carried out (produced) per day can be substantially increased, contributing to stable supply of molds and stable price. Play.

[0108] In addition, equipment of the invention according to請Motomeko 1 is using the devices in a basically conventional equipment, since it is obtained by changing the arrangement, the apparatus basically used the conventional Therefore, there is an effect that it can be realized at a relatively low cost without newly adding a large facility cost.

[0109] In the molding material unloading equipment according to the second aspect of the present invention , the empty pallet storage / supply device and the empty pallet are provided so that when the pallet mounting table rises to the molding material loading work position, it rises above the ground surface. Since the stand-by device and the pallet elevating device are provided in the underground pit, most of the equipment constituting the equipment is buried underground and there are few parts that protrude above the ground surface, so the ground surface and above the ground surface Space can be used effectively, and since each device does not exist above the ground surface, a sufficient passage for workers can be ensured, work efficiency can be improved, and the body is sandwiched between the mechanical parts of each device when carrying out the molding material removal work. It is possible to prevent the user from being injured by being hit or hitting the device. In addition, there is the effect that the apparatus does not fall and fall when a disaster such as an earthquake exposes workers to danger, and an evacuation route can be secured.

[0110] Further, the molding material unloading equipment according to the third aspect of the present invention.
The pallet mounting table is provided with a hollow lifter capable of ascending and descending such that the highest position is above the vicinity of the uppermost end of the pallet, and by sequentially lowering the hollow lifter, that position is since There was configured to be substantially uppermost position constantly pallet, when loading the mold material into an empty pallet, the mold material loading work position is always a constant height adjacent pallet uppermost end, the side frame of the pallet Loading work can be performed easily without disturbing the loading efficiency.

[0111] Further, the molding material unloading equipment according to the fourth aspect of the present invention.
Is that the loading position of the mold material is always 700 to 10
Because was configured to be set to the height of 300 mm, that always ground 700~1000mm the mold material loading work,
It is located at a height between the waist and below the chest and is suitable for loading work on shapes, so it is not necessary to take an unreasonable posture during loading work, reducing the degree of fatigue and the possibility of accidents The effect of improving efficiency can be expected.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram for explaining a conventional mold material unloading step.

FIG. 2 is a diagram illustrating an example of a pallet.

FIG. 3 is a diagram showing a time distribution of a molding material unloading process when a small variety and mass production are performed using the conventional molding material unloading equipment.

FIG. 4 is a diagram showing a time distribution of a molding material unloading step in a case where a large variety and a small quantity are produced using a conventional molding material unloading equipment.

FIG. 5 is a schematic side view showing an example of a molding material unloading facility of the present invention.

FIG. 6 is a schematic side view showing an example of a molding material unloading facility of the present invention, and is a view connected to the left end of FIG.

FIG. 7 is a diagram showing an example of the structure of “reiko”.

FIG. 8 is a view for explaining a pallet lifting device, and is a side view showing an example of the pallet lifting device.

9 is a diagram for explaining a pallet elevating device, and is a front view of the pallet elevating device of FIG.

FIG. 10 is a diagram for explaining a hollow lifter.

FIG. 11 is an explanatory diagram for explaining a step of carrying out a mold material using the mold material carrying-out equipment of the present invention.

FIG. 12 is an explanatory diagram for explaining a part of a molding material unloading step using the molding material unloading equipment of the present invention.

FIG. 13 is an explanatory diagram for explaining another part of the molding material unloading step using the molding material unloading equipment of the present invention.

FIG. 14 is an explanatory diagram for explaining still another part of the molding material unloading step using the molding material unloading equipment of the present invention.

FIG. 15 is an explanatory diagram for explaining still another part of the molding material unloading step using the molding material unloading equipment of the present invention.

FIG. 16 is an explanatory diagram for explaining still another part of the molding material unloading step using the molding material unloading equipment of the present invention.

FIG. 17 is a diagram showing a time distribution in a molding material unloading step in a case where a large variety and a small quantity are produced using the molding material unloading equipment of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 10 mold material unloading equipment 20 empty pallet storage / supply device 210 empty pallet transport device 220 empty pallet transport device 30 pallet elevating device 310 pallet placing table 40 empty pallet standby device 50 empty pallet 60 actual pallet 70 actual pallet unloading device 80

Claims (4)

(57) [Claims] 1. An empty pallet storage / supply device comprising a plurality of empty pallet transfer devices capable of transferring and stopping an empty pallet arranged in a height direction, and a pallet loading device having an empty pallet transfer mechanism. The pallet mounting table is provided, and the pallet mounting table is moved to a position at which an empty pallet is received, a work position for loading a mold material onto an empty pallet above the receiving position, and an actual pallet unloading device for the actual pallet on which the mold material is loaded. A pallet elevating device configured to be able to move up and down to the higher one of the transfer work positions of the pallets, receiving an empty pallet from the empty pallet storage / supply device, waiting, and loading the pallet in the pallet elevating device. And an empty pallet standby device having an empty pallet transfer mechanism that can be transferred to the mounting table. Each of the pallet placing tables in the pallet elevating device at the end of each transport device and the empty pallet receiving position in the empty pallet storing / supplying device, which are installed between the end of the pallet storing / supplying device and the pallet elevating device. Characterized in that it is configured to be able to freely move up and down so as to be adjacent to the section. 2. When the pallet placing table is raised to the form loading work position, it rises above the ground surface.
2. The underground pit is provided with an empty pallet storage / supply device, an empty pallet standby device, and a pallet lifting device.
The described mold material unloading equipment. 3. The pallet mounting table is provided with a hollow lifter capable of ascending and descending such that the highest position is above the vicinity of the uppermost end of the pallet. 3. The molding material unloading equipment according to claim 1, wherein the work position is always set to a substantially uppermost position of the pallet. 4. The work for loading a mold material is always carried out on the ground 7
4. The molding material unloading equipment according to claim 1, wherein the molding material unloading equipment is configured to be set to a height of 00 to 1000 mm.