JPH08268537A - Section carrying-out equipment - Google Patents

Abstract

PURPOSE: To shorten carrying out work time per single cycle by transferring an empty pallet to a pallet placing stand after it is transferred to a standby position from a storage-supply device, raising it up to a section loading position to load sections at the same time, and transferring an actual pallet loaded with sections to a carrying-out device thereafter. CONSTITUTION: An empty pallet 50 is supplied to an empty pallet standby device 40 from an empty pallet storage-supply device 20. Next, it is supplied to a pallet placing stand 310 in a pallet raising-lowering device 30 from the empty pallet standby device 40. Next, the pallet placing device 310 is raised, and the empty pallet 50 is raised up to a section transferring work position to which sections 80 are respectively transferred, and after section transferring work by manual operation, an actual pallet 60 to which the sections 80 are transferred is transferred to an actual pallet carrying-out device 70 by manual switch operation. At the same time, the pallet placing stand 310 descends up to an empty pallet receiving position. In this way, carrying-out work time per a singel cycle can be shortened.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a facility for carrying out a mold material such as alumite-treated material, and more specifically, for transferring a mold material such as alumite-treated mold material to an empty pallet and carrying out the mold material together with the pallet. Regarding equipment.

[0002]

2. Description of the Related Art Conventionally, as a unloading facility for a material to be anodized (hereinafter referred to as a mold material), as shown in FIG. 1 which is a schematic diagram showing a mold material unloading process, a first traverser 1 is used. , A pallet lifter 2 and a second traverser 3, and the first traverser 1
The pallet lifter 2 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 and descends, moves the empty pallet 4 to the height of the mold material loading work position X, and raises after loading the mold material to load the mold material. The actual pallet 6 is moved to the height position of the second traverser 3, and the second traverser 3 receives the actual pallet 6 from the pallet lifter 2 at a position adjacent to the pallet lifter 2 and executes the operation. Pallet unloading conveyor 7
Is transferred to a position adjacent to the pallet and then transferred to the actual pallet unloading conveyor 7.

As shown in FIG. 1, the steps of loading the mold material into the empty pallets and unloading the actual pallets using the above-mentioned conventional apparatus are first carried out by the empty pallet supply conveyor 5 in the direction of arrow a in the figure. 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 to the position adjacent to the pallet lifter 2 in the pallet longitudinal direction in the direction of arrow b in the figure (FIG. 1A).

Then, 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). After that, the pallet lifter 2 descends in the direction of the arrow d in the figure to the mold material loading work position, where the mold material 8 is loaded onto the empty pallet 4 and the actual pallet 6 is loaded.
It is said. On the other hand, the first traverser 1 from which the empty pallet 4 has been removed moves in the direction of the arrow e in the figure and returns to the original position adjacent to the empty pallet supply conveyor 5. On the other hand, the second traverser 3 moves to the position adjacent to the pallet lifter 2 in the ascending direction in the direction of the arrow f (FIG. 1B).

Then, after the pallet lifter 2 loaded with the actual pallet 6 is moved up to the original position adjacent to the second traverser 3 in the direction of the arrow g in the pallet longitudinal direction, the pallet transfer of the second traverser 3 is carried out. 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 from the empty pallet supply conveyor 5 to the first traverser 1 by the transfer mechanism (arrow i in the figure) (FIG. 1 (c)).

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

Usually, after the mold materials are loaded on the empty pallet 4, a work of fastening a bundle of mold materials in the pallet with a band and a work of covering or wrapping the mold material with a covering material such as vinyl. This is to prevent a part or all of the mold material in the pallet from being inadvertently moved or collapsed to hinder the transfer, and after the real pallet 6 is carried out by the real pallet carry-out conveyor 7, the mold material is removed. This is to enable the products to be shipped or stored in the bundle unit as they are without being sorted again according to the shipping destination or the product type. Incidentally, if the sorting work is performed in parallel during the work of loading the mold material, the time for carrying out the sorting work again as described above can be saved. Therefore, in order to reduce the required working time and increase the overall production efficiency, the bundle of mold materials needs to be composed of only the same type.

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

By the way, in recent years, there has been a demand for a large number of types of mold materials and small-quantity production, and the number of mold materials to be loaded per pallet for each same kind is decreasing in the mold material unloading process. As mentioned above, in order to improve the production efficiency, it is necessary that the mold materials loaded on one pallet are of the same type, so the time required for carrying out per pallet was required for the conventional small type and mass production. At the same time, the number of molds that can be carried out per day is
The number of items loaded per pallet will be reduced by a corresponding amount. This means that the total production amount of the die material decreases, which leads to a shortage of the supply amount to the market, and the production cost per die material is high and the die material price becomes expensive.

Therefore, the inventors of the present invention maintain the same level of the total carry-out amount as possible to prevent the decrease in the total production quantity of the die material, and if possible, improve the quantity by one pallet. I tried to reduce the time required to carry out the work.

Therefore, first, the time allocation of each work in the cycle of the mold material unloading process in the case of the conventional small type and mass production was examined in detail. According to it, the time allocation of each work was as follows. (1) Time for transferring the empty pallet 4 from the empty pallet supply conveyor 5 to the first traverser 1 ... about 3 to 5 seconds (2) Second Time to move the traverser 1 of 1 to the position of the pallet lifter 2 ・ ・ ・ ・ ・ ・ ・ ・ About 20 seconds (3) Empty pallet 4 Transfer time from the first traverser 1 to the pallet lifter 2 ・ ・ ・ ・ ・ ・ ・ ・ About 3 to 5 seconds (4) Pallet lifter 2 Time to drop to the working position ... 3 seconds (5) Empty pallet 4 and mold material 8 Loading time (per die material) ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ 3-5 seconds / piece (6) Loading Time for banding and wrapping loose mold materials ... 15 seconds (7) Time to move the first traverser 1 to the original position adjacent to the empty pallet supply conveyor 5 Approx. 20 seconds (8) Second It takes about 20 seconds to move the traverser 3 of No. 2 to the position adjacent to the pallet lifter 2 when it is lifted. Ascending time to the original position adjacent to 3 ... Approx. 3 seconds (10) Move the actual pallet 6 from the pallet lifter 2 to the second traverser 3 Transfer time to ・ ・ ・ ・ ・ ・ ・ ・ 3 to 5 seconds (11) Second traverser It takes about 20 seconds to move 3 to the position adjacent to pallet unloading conveyor 7 (12) Actual pallet 6 is removed from the second traverser 3 Transfer time to pallet unloading conveyor 7 Approx. 3 to 5 seconds

The above times (5) and (6) do not depend on the drive speed of each device or the distance between each device. When the number of mold materials to be loaded into one empty pallet is large as in the conventional case, the total time obtained by multiplying the above time by the number of mold materials becomes considerably long, and as a result, the process of loading the mold material into the empty pallet is 1 It was the rate-determining step that determines the cycle period.

This will be described in detail with reference to FIG.
FIG. 3 shows that when the time of (5) above is considerably long using the conventional device, the cycle of one cycle is minimized by making the operation and work of each device continuous between the devices. It is a flow sheet showing the flow of the work process when doing. In FIG. 3, the mark connecting the circles with a dotted line indicates the movement of the first traverser 1, the mark connecting the crosses with a solid line indicates the movement of the pallet lifter 2, and the mark connecting the squares with a two-dot chain line indicates the movement. The movement of the traverser 3 of No. 2 is shown along with the passage of time. Then, T ₁ is the period of the first traverser 1, t ₁₁ is the time (7), t ₁₂ is the time (1), t ₁₃ is the time (2), and t ₁₄ is the time (3). Time, and T ₁ = t ₁₁ + t ₁₂ + t ₁₃ + t ₁₄
Is. T ₂ is the period of the second traverser 3, t ₂₁ is the time (11) above, t ₂₂ is the time (12) above, t ₂₃ is the time (8) above, and t ₂₄ is the time (10) above. And T ₂ = t ₂₁ + t ₂₂ + t ₂₃ + t ₂₄ . T ₃ is the cycle of the pallet lifter 2, t ₃₁ is the time of (4) above, and t ₃₂
Is [(time of above (5) x number of mold materials per pallet) + time of above (6)], t ₃₃ is time of 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, the cycle T ₂ of the second traverser 3 = (about 20 seconds) + (About 3 to 5 seconds) + (about 20
Seconds) + (about 3 to 5 seconds) = about 46 to 50 seconds = T ₁ .
On the other hand, the period T ₃ of the pallet lifter 2 = (about 3
Second) + [(about 3 to 5 seconds) x number of mold materials (n)] + (about 12
~ 15 seconds) + (about 3 seconds) + (about 3 to 5 seconds) + (about 3 to 5)
Therefore, when the number of mold materials (n) is large (for example, 20 molds), T ₃ = about 84 to 131 seconds, which is much larger than the above T ₁ (T ₂ ). The loading work is at a rate-determining step, and the work cycle is performed at a cycle below the capacity limit of the operating speed of each device.

Therefore, even if the working time should be shortened in accordance with the margin of the operating capacity of each device, and the time that cannot be shortened is called loss time, the problem that this loss time occurs is due to the mold material unloading equipment. Not something to do. Moreover, since many mold materials were loaded on one pallet in the past, it was possible to secure the total production quantity of the necessary mold materials even if the work time per cycle was a little long, and the cost per mold material was greatly affected. It wasn't.

[0016]

However, when the number of molds loaded on one pallet is small, for example, 5 molds, when applied to the above-mentioned conventional apparatus, T ₃ = about 39-.
56 seconds, and the average is about 47.5 seconds.
The average value of ₁ (T ₂ ) is less than about 48 seconds. Therefore, the step showing T ₁ (T ₂ ) becomes the rate-determining step, and as a result, the cycle of one cycle in the mold material unloading work cycle becomes T ₁ (T ₂ ). Then, as mentioned above,
Despite the drastic decrease in the number of mold materials that can be carried out per cycle, the time required for one cycle does not become shorter than a certain amount due to the limit of the equipment capacity, and is not as short as the reduction ratio of the number of mold materials per cycle. As a result, the total number of molds that can be carried out per day will decrease. Along with this, the work flow becomes discontinuous between the respective devices, resulting in loss time.

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

In FIG. 4, the real pallet is transferred from the pallet lifter to the second traverser as soon as the pallet lifter carrying the real pallet rises, and as soon as it is completed, the pallet lifter from the first traverser is transferred. The empty pallet is transferred to the pallet lifter 2, and as soon as it is finished, the pallet lifter 2 is lowered to the work position for loading the mold material, and as soon as it is lowered, the work for loading the mold material is performed. In this case, a loss time t ₃₀ occurs after the loading of the mold material on the empty pallet is completed.

Although not illustrated, as soon as the pallet lifter descends to the mold material loading work position, the work of loading the mold material on the empty pallet is carried out, and as soon as it is finished, the pallet lifter on which the actual pallet is placed rises and the pallet lifter moves. As soon as it rises, the actual pallet is transferred from the pallet lifter to the second traverser, and once it is finished, the first pallet is transferred.
When an empty pallet is transferred from the traverser to the pallet lifter, a loss time is similarly generated after the transfer of the empty pallet from the first traverser to the pallet lifter is completed.

Although not illustrated, the pallet lifter on which the real pallet is placed rises, and as soon as the pallet lifter rises, the real pallet is transferred from the pallet lifter to the second traverser, and when the pallet lifter finishes, the first pallet is placed. The empty pallet is transferred from the traverser to the pallet lifter, and as soon as it is finished, the pallet lifter 2 is lowered to the work position for loading the mold material, and as soon as it is lowered, the work for loading the mold material is performed.
If the pallet lifter on which the actual pallet is placed is raised as soon as the work of loading the mold material is finished, a similar loss time is generated 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 with the actual pallet to the second traverser, and the empty pallet from the first traverser with the empty pallet to the pallet lifter. Lost time occurs during the work of placing.

As described above with reference to FIG. 4, for example,
No matter how short T ₃ becomes due to the shortening of the mold material loading time, the first traverser, pallet lifter,
Regardless of the mutual phase of each operation of the second traverser (the degree of time shift of one operation cycle between each device), the cycle of one cycle is always the first traverser (second traverser). Cycle of operation T ₁ (T
₂ ) Could not be shorter.

Therefore, the inventors of the present invention pay attention to the above-mentioned loss time, and in view that this loss time corresponds to the surplus of the device capacity, in order to reduce the time of one cycle, the loss time is first solved. I tried. If at least T ₁ (T ₂ ) is shortened to be equal to T ₃ to eliminate the loss time, the cycle of one cycle is shortened first, and the waste of leaving the device idle is also eliminated.
Therefore, the present inventors examined whether the traverser, which took the longest time in the rate-determining step, could be made to have a faster moving speed.

However, this is not possible with the current drive mechanism of the traverser, and even if a completely different drive mechanism is used, increasing the speed of the traverser has various problems. That is, even if the speed of the traverser is increased, it is necessary to apply a brake to decelerate it when stopping the traverser, and inevitably it takes time in the meantime. In order to shorten the deceleration time, it is necessary to review the brake system so that the traverser body with considerable weight and the capacity to suppress the inertial force due to the weight load of the empty pallet and the actual pallet, In addition, there is a problem that the running cost of the device increases because the wear of the brake system becomes severe.

Further, if the traverser is moved at a high speed or abruptly braked, the pallets loaded on the traverser may slip or be displaced, and in extreme cases, it may jump out of the traverser, which is dangerous. There is also a risk of damaging the mold material. In addition, it causes noise and the like to deteriorate the working environment. In order to prevent such a situation, it is conceivable to temporarily fix the pallet or the like to the traverser by means such as chucking, but it takes time and labor even if the work is temporarily fixed. If the device is covered with a soundproof hood in order to prevent noise, the equipment is expensive and it is still impossible to completely block the noise.

As described above, there are economic problems such as equipment costs, running costs associated with equipment operation and maintenance, work costs associated with labor required for work, working environment problems such as noise and danger, and product quality such as mold material damage. When considering issues such as 1
An effective means to shorten the work cycle period to increase the total amount of die material carried out per day even in high-mix, low-volume production, and not significantly reduce it compared to the conventional low-mix, high-volume production. There was no

In addition to the above, in the conventional method, since the size of the pallet is only one type, if the number of mold materials loaded in one pallet is small, a lot of wasted space is generated in the pallet and transport efficiency is deteriorated. And as a result,
There is a problem that the cost of the transportation costs and the price of the mold material becomes expensive. In order to solve this problem, a pallet of a size corresponding to the number of mold materials to be loaded may be used. However, a plurality of types of pallets can be prepared for each size in a short time without violating the above purpose (shortening the cycle time). In order to select and supply the pallets, in the conventional equipment, it is necessary to divide the size of pallets into planes and stock them in a plane. There is a problem that the space above the space is wasted as well as the space required.

Therefore, the inventors of the present invention newly drastically reviewed the flow of pallets in the mold material unloading work process in the conventional equipment, and newly established a policy of using a pallet having an appropriate size according to the number of mold materials. As a result of intensive research based on the idea of changing the flow of pallets according to this,
The present invention has been completed. That is, according to the present invention, one unloading work cycle can be shortened without carrying a pallet or a mold material at a high speed. Therefore, the device used for transferring the mold material does not burden the mold material, and the mold material is not jumped out or damaged. There is no risk of collision with other people or other parts, or noise due to collision, and even in the case of high-mix low-volume production, it is possible to carry out a relatively large amount of mold material and it has excellent transport efficiency. It is an object of the present invention to provide a mold material unloading facility that can carry out a real pallet in a form and does not require a large installation space.

[0029]

According to the present invention, (1) an empty pallet storage / supply system is constructed by arranging a plurality of empty pallet conveyors capable of transferring and stopping empty pallets in a height direction. An apparatus and a pallet mounting table having an empty pallet transfer mechanism are provided, and the pallet mounting table is provided with a position for receiving an empty pallet, a work position for loading the empty pallet above the receiving position, and a mold material. A pallet elevating device configured to elevate the loaded pallet to the actual pallet unloading device, whichever is higher, and receives an empty pallet from the empty pallet storage / supply device. And an empty pallet standby device having an empty pallet transfer mechanism that can be put on standby and transferred to the 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 lifting device, and the pallet at the end of each transport device and the empty pallet receiving position in the empty pallet storage / supply device. A mold material unloading facility characterized by being configured so that it can freely move up and down so as to be adjacent to each of the pallet mounting tables in the lifting device, (2) When the pallet mounting table is raised to the mold material loading work position, The mold material unloading facility according to (1) above, wherein an empty pallet storage / supply device, an empty pallet standby device, and a pallet lifting device are provided in an underground pit so that the pallet storage / supply device is provided above the ground surface.
(3) The pallet mounting table is provided with a hollow punch lifter that can be moved up and down such that the highest lift position is higher than the vicinity of the uppermost end portion of the pallet, and the hollow punch lifter successively descends during the work of loading the mold material. The work position is always set to the substantially uppermost position of the pallet (1)
Alternatively, in any of the above (1) to (3), the mold material unloading facility described in (2) and (4) the mold material loading work position are always set to a height of 700 to 1000 mm above the ground. The outline is the facility for unloading the mold material.

[0030]

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

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 pallet standby device 40 runs out. When there is an empty pallet, two empty pallet transfer devices capable of appropriately transferring and stopping the empty pallet so that the supply of the empty pallet can be stopped and the empty pallet can be stored by stopping the empty pallet. 210 and 220 are arranged in the height direction.

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

The height h of each empty pallet accommodating portion of the empty pallet transporter 210, 220 is usually set to a height corresponding to the height H of the empty pallet to be stored in each, but more than that. It does not matter as long as there is no hindrance to empty pallet storage. However, in order not to waste space, it is preferable that h be slightly larger than H and substantially equal. In the figure, an empty pallet with a high height (usually a standard height size) is shown at 210 in the upper part, and an empty pallet with a low height (usually ½ of the standard height size) is shown at 220 in the lower part.
However, the hierarchical relationship is not limited to this.

It is preferable to prepare various sizes of the empty pallet 50 so that the empty pallet 50 can be used properly according to the number of the mold materials 80 to be loaded, but generally, two or three kinds are generally sufficient. That is, length L × width W × height H,
5000 x 1000 x 900 (Unit mm), 5000
X1000x600 (unit mm), 5000x100
Although it is 0 × 300 (unit: mm), it is not often used when the number of mold materials is small. Therefore, when the number of mold materials is small, the above [standard height size] means the above size in most cases, and the above [standard height size 1/2 size] almost always means the above size. means.

Then, for example, an empty pallet transfer device 210
Empty pallet 50 stored in the empty pallet waiting device 40
In the case of supplying the empty pallet to the empty pallet standby device 40, the empty pallet standby device 40 is placed adjacent to the end of the empty pallet transport device 210, and then the empty pallet transport device 210 and the pallet transfer mechanism 401 in the empty pallet standby device 40 are operated together to supply the empty pallet. 5
0 is transferred from the empty pallet carrier device 210 to the empty pallet standby device 40. When transferring the empty pallet 50 from the empty pallet transport device 220 to the empty pallet standby device 40, the same procedure as above is followed. Empty pallet standby device 4
Details of making 0 adjacent to the empty pallet transfer device 210 (220) will be described later.

As the empty pallet conveyors 210 and 220, conventionally known conveyors such as chain conveyors, belt conveyors and roller conveyors can be used.

In the present invention, empty pallet storage /
As the supply device 20, three or more empty pallet transfer devices may be arranged in the height direction.

By arranging a plurality of empty pallet conveying devices in the height direction, the empty pallet waiting device 40 that can adjoin the empty pallet to the pallet elevating device 30 transfers a pallet of a desired size to the pallet elevating device 30. It is possible. Therefore, both the pallet elevating device 30 and the empty pallet standby device 40 basically need to be able to perform the elevating operation, and do not need to have a complicated mechanism such as a fork mechanism, and can be a simple device mechanism.

Further, by arranging a plurality of empty pallet transporting devices in the height direction, the device can be installed and installed within the range of other device widths such as the pallet lifting device 30. Compared with the case of arranging them in a plane such as arranging them side by side in the longitudinal direction, the required installation area is smaller, which contributes to the effective utilization of the plane space and the space is not wasted.

The pallet raising / lowering device 30 receives the empty pallet 50 from the empty pallet standby device 40, lifts it to the work position for loading the mold material, and then finishes the work for loading the mold material and finishes the actual pallet 60 loaded with the mold material.
The pallet transfer mechanism 311 is a device for repeatedly performing a series of operations of lifting or lowering to a transfer work position to the actual pallet unloading device 70, and is mainly used to receive an empty pallet from the empty pallet standby device 40. Set the pallet stand 310 to the empty pallet 5
The position when receiving 0, the loading work position of the mold material 80 on the empty pallet 50 above the receiving position, and the transfer work position of the real pallet 60 on which the mold material 80 is transferred to the real pallet unloading device 70 It is configured to be able to move up and down between the higher one of them.

Here, of the pallet mounting table 310,
The position for receiving the empty pallet 50 from the empty pallet standby device 40 is usually a fixed position. Therefore, the position of the empty pallet standby device 40 when the empty pallet 50 is transferred to the pallet mounting table 310, and the empty pallet transport device 210.
Alternatively, the height may be different from the position when the empty pallet 50 is transferred from 220. Empty pallet standby device 40
To the empty pallet transfer device 210 or 220 or the pallet mounting table 310, according to the different heights.
It is configured so that it can be raised and lowered so that it can be placed adjacent to another when transferring an empty pallet.

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

The position of the pallet mounting table 310 for receiving the empty pallet 50 from the empty pallet standby device 40 is as follows.
Usually, as shown in FIG. 5, for example, the height position of the empty pallet transport device 210 (or 220) is matched. In this way, when the empty pallet 50 is transferred from the empty pallet transfer device 210 to the pallet mounting table 310 via the empty pallet standby device 40, the empty pallet transfer device 210 transfers the empty pallet standby device 40 to the empty pallet standby device 40. The pallet 50 can be mounted on the pallet mounting table 3 without changing the height position of the empty pallet standby device 40.
10 and the vertical movement of the empty pallet standby device 40 can be minimized, which contributes to the reduction of the empty pallet transfer work time.

The term "adjacent" means that the empty pallet standby device 40 is adjacent to the empty pallet transport device 210 or 220 or the pallet placing table 310 during the transfer of the empty pallets. By placing the empty pallet 50 in such a state that the empty pallets 50 can move smoothly between the devices on both sides of the adjacent part, the transfer mechanism of each device may be a chain conveyor or a roller conveyor regardless of contact or non-contact. In such a case, as shown schematically in FIG. 5, for example, the chain parts and the roller parts may be in a state of being “recessed” with each other. In FIG. 5, an empty pallet standby device 40
The left end of the pallet transfer mechanism 401 in FIG.
The structure is such that the right end of 01 and the left end of the pallet transfer mechanism 311 on the pallet mounting table 310 are in contact with each other.

FIG. 7 shows an example of the structure of the above "Ireko".
The figure (a) shows the structure of "Ireko" when a chain conveyor is used as the transfer mechanism, and the figure (b) shows the structure of "Ireko" when a roller conveyor is used as the transfer mechanism. (C) is a top view which respectively shows the structure of "Ireko" when a belt conveyor is used as a transfer mechanism. In the figure, A is a chain, B is a roller, and C is a belt. In any of the above cases, the number of chain chains, rollers, or conveyors that have been incorporated may be any number.

As described above, the empty pallet standby device 40 stores the empty pallet 50 in the empty pallet storage / supply device 2.
A device for receiving from the empty pallet storage / supply device 20 for receiving from 0 and delivering to the pallet mounting table 310 in the pallet elevating device 30 and installed between the two devices. The pallet transfer mechanism 401 provided therein can be stopped and the received empty pallet 50 can be kept on standby until it is delivered to the pallet table 310.

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 transferred to the pallet elevating device 40 are different, Pallet lifting device 40
It is raised or lowered to a height position (empty pallet receiving position) for transferring an empty pallet to. Here, it is preferable that the raising / lowering operation of the empty pallet standby device 40 is performed during the standby time because it can contribute to the reduction of the empty pallet transfer time and the reduction of the total work cycle time.

This also means that the size of the empty pallet is selected before the pallet elevating device reaches the empty pallet receiving position. In this case, the total work cycle time can be shortened by the time required for selecting the size of the empty pallet, which greatly contributes to the shortening of the cycle time.

In the above description, the mold material loading work position means that the mold material 80 which has been conveyed on the mold material conveying device 810 and carried out on the mold material aligning table 820 is an empty pallet 50.
It is a work position where the work of loading is carried out, and is usually set to a height position around the waist to the chest of the worker. Therefore, when the worker stands on the ground surface and works, the work position for loading the mold material is usually about 700 to 1 from the ground.
The height is 000 mm, preferably 800 to 900 mm. Further, the present invention is not limited to the case where the height position is designed so that a mold material loading worker stands on the ground to perform the work, and if the worker works on a workbench or the like, If it is, the work position is
The height from the ground surface is usually the above height plus the height of the workbench.

The actual pallet unloading device 70 is equipped with a pallet transfer mechanism 701 for picking up the actual pallet 60 after the work of loading the mold material from the pallet mounting table 310 of the pallet lifting device 30. The pallet 60 can be picked up and taken out. This real pallet unloading device 70
Also, the same one as the empty pallet transport device 210 (220) described above can be used.

In the present invention, the actual pallet unloading device 7
The height position of the upper surface of 0 is made the same as the height position of the upper surface of the pallet mounting table 310 at the work position for loading the mold material, and both devices are placed adjacent to each other by, for example, putting the two devices adjacent to each other to make the actual pallet horizontal. The pallet transfer mechanism 311 of the pallet mounting table 310 and the real pallet unloading device 70 are simultaneously operated to move the real pallet 60.
The pallet transfer mechanism 701 does not need to be provided in the actual pallet unloading device 70 because the pallet transfer mechanism 701 can be transferred.

However, here, the pallet mounting table 31
Avoid declining the capacity of the equipment by spending time for banding and packing of the mold material after loading on 0, and transfer the real pallet 60 to the real pallet unloading device 70 that does not depend on the cycle of the work cycle first. If the band fastening and the packaging are performed on the actual pallet unloading device 70, the cycle period can be further shortened.

In order to do so, the height position of the actual pallet carrying-out device 70 is set to a height position suitable for the above-mentioned band fastening of the mold material and the packaging work (height about 600 to 9 from the bottom of the foot of the worker).
00 mm, preferably about 700 to 800 mm), and the actual pallet unloading device 70 from the pallet mounting table 310.
When transferring the real pallet 60 to the real pallet 60, the pallet mounting table 310 is moved up or down to a height position such that its end is adjacent to the end of the real pallet unloading device 70, and then the real pallet is horizontally moved. Or transfer it to
Alternatively, as shown in FIG. 5, the actual pallet unloading device 70
Further, a pallet transfer mechanism 701 configured to be capable of horizontal movement and vertical movement is provided, and at the time of transferring the real pallet 60 from the pallet mounting table 310 to the real pallet unloading device 70, the work position is set to the mold material loading work position. The actual pallet 60 on the pallet mounting table 310 may be transferred to the actual pallet unloading device 70 without moving the pallet mounting table 310 as it is.

For example, a fork mechanism in a forklift or the like can be used as the pallet transfer mechanism 701 in the actual pallet unloading device 70 which is configured to be horizontally movable and vertically movable.

FIG. 6 is a diagram showing the entire contents of the empty pallet storage / supply device 20 connected to the left end portion of the equipment shown in FIG. 5 in the embodiment of the equipment of the present invention. In the figure, 91
0 stores empty pallets 50 conveyed by an empty pallet carry-in device 920 such as a conveyor, and stores the empty pallets.
It is an empty pallet supply table for enabling supply to the supply device 20, and is provided adjacent to the end of the empty pallet storage / supply device 20.

As the empty pallet supply table 910, the same lift mechanism as that of the empty pallet standby device 40 described above can be used. The raising and lowering operations may be powered or manual, but are typically 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. Each of the empty pallet transfer devices 210 and 220 in FIG.

Specifically, the empty pallet supply table 910 is
In the empty pallet storage / supply device 20, it can be located at a height position adjacent to both ends of the empty pallet transport devices 210 and 220, and at a height position adjacent to the end part of the empty pallet loading device 920. It is configured to be able to move up and down. The empty pallet carry-in device 920 is installed at a position such that its end portion is adjacent to the elevating range of the empty pallet supply table 910. That is, the empty pallet supply table 9
10 is provided at a position where it can be adjacent to the end of each empty pallet transfer device 210, 220 by adjusting the elevation height thereof, and the empty pallet carry-in device 920 is used for supplying the empty pallet. The height of the platform 910 is adjusted so that it can be located adjacent to the end of the empty pallet loading device 920.

Here, the empty pallet carry-in device 920
May be installed such that the empty pallet carry-in direction therewith may be the same as or different from the empty pallet carry-out direction of the pallet carrier devices 210 and 220, but in FIG. Empty pallet loading device 92
No. 0 is installed so that the empty pallet carry-in direction by it is a horizontal direction perpendicular to the empty pallet carry direction of the pallet carrier devices 210, 220 and the like. That is, while the empty pallet transporting direction of the pallet transporting devices 210, 220 and the like is the right side in the drawing, the empty pallet transporting device 92
The empty pallet carry-in direction of 0 is the direction toward the back (or front) of the drawing. With this configuration, the length of the entire carry-out line does not become long, so that the installation space of the line can be reduced.

The pallet transfer mechanisms 211 and 221 may be the same as the pallet transfer mechanism 701 of the actual pallet unloading device 70 which is configured to be horizontally movable and vertically movable, for example, a fork mechanism of a forklift or the like may be used. it can.

8 and 9 are views showing an example of the pallet elevating device 30, FIG. 8 is a side view of the pallet elevating device 30, and FIG. 9 is the front (viewed from the actual pallet unloading device 70 side).
FIG. The pallet raising / lowering device 30 is guided by a column guide portion 322 provided on a pedestal 321, and the pedestal 32
A column 323 movably provided in the vertical direction with respect to 1.
At the upper end of the pallet mounting table 310, there is provided a support body 324 which is provided below the pallet mounting table 310 with a space therebetween to support the pallet mounting table 310. A rotary shaft 326a, to which a pinion gear 326 is rotatably mounted, is rotatably supported, and the rotary shaft such as a motor is connected to the rotary shaft of the pinion gear 326. A gear 327 that is fitted to the teeth of the pinion gear 326 is formed in the vertical direction at a portion of the support column 323 that faces the pinion gear 326 while being configured to be able to apply a rotational driving force via a mechanism. (The enlarged view is shown in the lower right frame in the figure), the teeth of the pinion gear 326 are fitted to the gear 327, and the pinion gear 326 is
Is rotated so that the support body 324 moves up or down together with the support column 323 depending on the direction of rotation, and the pallet mounting table 310 moves up or down (this mechanism is generally called a rack and pinion).

Further, the support 324 has a hollowing lifter 3
28 is provided, and the hollowing lifter 328 is guided by the lifting bar guide portion 329 and is vertically movable with respect to the support body 324.
At the upper end of the die, a die stand 331 is provided, and the support 324
And / or a shaft frame 3 provided on the lifting bar guide portion 329.
A rotating shaft 333a in which a pinion gear 333 is attached to the shaft 32
Is rotatably supported, and a rotation driving force can be applied to the pinion gear 333 through an arbitrary rotation driving force transmission mechanism, for example, by connecting a rotation shaft such as a motor to the rotation shaft thereof. A gear 334 that is configured and fits to the teeth of the pinion gear 333 is formed in the vertical direction at a portion of the elevating bar 330 that faces the pinion gear 333. (Shown in the inside), the teeth of the pinion gear 333 are fitted to the gear 334, and by rotating the pinion gear 333, the die support 331 is raised or lowered depending on the direction of rotation, and the lifting bar 330 is raised or lowered. The rack and pinion configuration is such that the die material receiving large 331 descends and rises or descends.

Then, at least a portion corresponding to the position of the hollowing lifter 328 near the central portion of the pallet mounting table 310 is hollowed out so as to have a size corresponding to at least the size of the die material receiving base 331 of the hollowing lifter 328. In the same state as when it is hollowed out or substantially hollowed out, the mold material receiving base 331 of the hollowing lifter 328 can be raised above the surface of the pallet mounting base 310.

In the hollowing lifter 328, as shown in FIG. 10, the die receiving base 331 is arranged so that its width expands and contracts in the pallet width direction and both widthwise parts slide outward in the pallet widthwise direction. It is configured. The sliding is performed by supplying air to the air cylinder 335 or removing air. The maximum width when the widthwise side portions of the mold material receiving base 331 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 is a member for converting the force received from below in the lateral direction, and is used as the die support 3
When 31 is extended, it is provided so as to be inclined with respect to the vertical direction (or the horizontal direction). When the template receiving base 331 is lowered into the pallet in the state of being extended in the width direction, this member 336 abuts both width direction frame portions 51 and 52 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 material 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 residual air is removed from the cylinder bar 3.
When 37 is pushed by an external force, it naturally comes off, but a slight external force is required for the residual air to come off.
Sliding movement of the extension portions on both sides of 1 in the direction of arrow s is performed gently but smoothly with some resistance.

A die support 331 for the hollow lifter 328.
Is configured as described above, even if the mold materials are stacked on the mold material receiving base 331 outside the width of the pallet 50, both sides of the pallet are lowered when the mold material receiving base 331 descends. Both sides of the mold material receiving base 331 are slid to narrow the entire width by hitting the both frame portions 51 and 52 in the width direction, so that the mold material on the mold material receiving base 331 is also aligned within the range of the entire width of the pallet accordingly. Therefore, there is an effect that the mold material and the pallet can be reliably accommodated in the empty pallet without damaging the mold material and in the aligned state.

In the present invention, the above-mentioned hollowing lifter 3
28 is not essential. However, a hollowing lifter 328 that can be moved up and down such that the highest lifted position is above the uppermost end of the pallet is provided, and by successively lowering the hollowing lifter 328, that position is always on the pallet during the work of loading the mold material. It is preferable to configure it so that it is substantially at the uppermost end position, and when doing so, when loading the mold material into the empty pallet, the work position for loading the mold material is always at a constant height position near the top end of the pallet, so that the pallet There is an advantage that the loading work can be performed easily and the loading work efficiency can be improved without disturbing the side frame.

In the above, the work position for loading the mold material is
As set to a height of 700-1000 mm above the ground,
More preferably, the hollowing lifter 328 is configured to be successively lowered. With this configuration, the work of loading the mold material is always 700 to 1000 mm above the ground, which is a position suitable for the work of loading the mold material, which corresponds to a height in the range from the waist to the chest of a person, and therefore, an unreasonable posture should be taken during the work. It can be expected that the effect of reducing fatigue and accidents and improving work efficiency can be expected.

Further, in the above, the pallet lifting device 3
0 is configured such that the rising height of the pallet mounting table 310 can be arbitrarily selected according to the height type of the pallet so that the substantially uppermost end of the pallet is automatically set to the height of the work position for loading the mold material. It is preferable that the height of the top end of the pallet when the pallet is lifted is changed according to the type of pallet, so that any type of pallet can be loaded with the mold material. 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 which is adjacent to the empty pallet transport device in which the desired empty pallet 50 is stored.
It is preferable that the ascending 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 loading table. When transferring an empty pallet from the empty pallet storage / supply device 20 to the empty pallet standby device 40, an empty pallet transport in which a desired empty pallet is stored is selected based on the selection result. When the height of the empty pallet standby device 40 adjacent to the device is determined, the required elevation of the pallet mounting table 310 of the pallet lifting device 30 is automatically determined according to the selection result. There is an advantage that the work can be omitted because it is not necessary to determine and operate the rising height of 310.

In FIG. 8 and FIG. 9, the pallet mounting table 3
The pallet transfer mechanism 311 provided in FIG.
As shown in Fig. 9, a chain conveyor is used (enlarged view is shown in the drawing in the frame of Fig. 9, D represents a chain), but as the transfer mechanism 311, any mechanism may be used as described above. . Since the pallet mounting table 310 is provided with this transfer mechanism 311, naturally, at least the portion corresponding to the position of the hollowing lifter 328 near the central portion of the transporting mechanism 311 is at least the hollowing lifter 32.
The size corresponding to the size of the mold material receiving base 331 of No. 8 is hollowed out, or is substantially in the same state as when it is hollowed out, and the mold material receiving base 331 of the hollowing lifter 328 is the pallet transfer mechanism 311. It is possible to climb above the plane.

Next, a process of carrying out the mold material using the mold material carrying-out facility of the present invention will be described. FIG. 11 shows the equipment 10 of the present invention.
FIG. 7 is a process diagram showing an outline of a mold material unloading process using. As shown in the figure, first, the empty pallet 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 ((a) in the same figure). Next, pallet table 3
10 is moved up to the mold material loading work position, and the mold material 80 is loaded from the mold material aligning table 820 onto an empty pallet at the mold material loading work position (FIG. 7B). afterwards,
The actual pallet 60 is transferred to the actual pallet unloading device 70 by the pallet transfer mechanism 701 of the actual pallet unloading device 70 ((c) in the figure). When the transfer of the actual pallet 60 is completed, the pallet mounting table 310 is lowered to the empty pallet receiving position, and another new empty pallet 50 is moved there.
Are transferred from the empty pallet standby device 40 ((d) in the same figure). In this way, a series of work is repeated.

The operation of each device of the equipment of the present invention in the above series of operations will be described in more detail with reference to FIGS. First, when 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 transport device 210 in the empty pallet storage / supply device 20, it is shown in FIG. Thus, the empty pallet standby device 40 is raised or lowered so that it is located at a height position adjacent to the end of the empty pallet transport device 210 in which the selected empty pallet is stored.

Then, the empty pallet carrier device 210 is operated and the pallet transfer mechanism 401 of the empty pallet waiting device 40 is operated to transfer the empty pallet 50 from the empty pallet carrier device 210 to the empty pallet waiting device 40. To be made.

In the empty pallet 50, the pallet mounting table 310 of the pallet elevating device 30 is at the empty pallet receiving position (usually the fixed position as described above. It is made to wait on the empty pallet waiting device 40 until it descends to the same height position as the position).

After the pallet mounting table 310 is lowered to the empty pallet receiving position and is 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.

Then, as shown in FIG. 13, the empty pallet 50 is raised to the mold material loading work position by raising the pallet mounting table 310. At this mold material loading position, the mold material 80 is positioned on the mold material alignment table 82.
The empty pallet 50 is loaded from 0 to the empty pallet 50 on the pallet mounting table 310.
It is set to 0. During this period, the empty pallet waiting device 40 in which the empty pallets are no longer present due to the above work
An operation of supplying another new empty pallet from the empty pallet storage / supply device 20 is performed thereon, and the new empty pallet 50 is made to stand by on the empty pallet standby device 40. The supply of the empty pallet 50 to the empty pallet standby device 40 is performed as described above.

The work of loading the mold material 80 onto the empty pallet 50 may be carried out manually by the operator, or may be carried out by using the 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 manual work and the mechanical work, and there is also a slight difference between the two depending on the number of mold materials loaded per pallet. When the number of mold materials to be loaded per pallet is small, the former method is shorter in time and advantageous, but in the latter case, it is possible to fully automate the mold material loading work. This is advantageous in terms of reducing labor and stabilizing production efficiency by stabilizing work efficiency.

Next, as shown in FIGS. 14 and 15, the actual pallet 60 is transferred from the pallet mounting table 310 onto the actual pallet unloading device 70 by the pallet transfer mechanism 701 of the actual pallet unloading device 70. It Here, as described above, the height position of the actual pallet unloading device 70 is set to a height position suitable for the mold band fastening and the packaging work (height from the bottom of the foot of the worker is about 600 to 900 mm, preferably about 700 to 800 mm) and set the pallet table 3
When the real pallet 60 is transferred from the real pallet unloading device 70 to the pallet mounting table 310, the pallet mounting table 310 is moved up and down so that its end is adjacent to the end of the real pallet unloading device 70. The actual pallet 60 is horizontally transferred and transferred, or, as shown in FIG. 9, the actual pallet unloading device 70 is provided with a pallet transfer mechanism 701 configured to be horizontally movable and vertically movable. When the actual pallet 60 is transferred from the pallet mounting table 310 to the actual pallet unloading device 70, the actual pallet mounting table 310 is not moved up and down without moving the pallet mounting table 310 on the mounting table 310. After the pallet 60 is transferred to the actual pallet unloading device 70, the banding of the mold material and the packaging work are performed after transferring the actual pallet 60 to the actual pallet unloading device 70. If so done, preferred since the work cycle time can be significantly shortened.

In FIGS. 14 and 15, the apparatus arrangement and the method of transferring the actual pallet are used, and the actual pallet unloading device 70 is slightly lower than the appropriate mold material loading position, and the mold material band fastening and The actual pallet 60 is transferred by using the pallet transfer mechanism 701 provided at a position suitable for the packaging work and without moving the pallet mounting table 310 from the position for loading the mold material. In this case, as the pallet transfer mechanism 701, a mechanism similar to a fork mechanism in a forklift is adopted, but here, as the height position of the actual pallet 60, the bottom 61 thereof is at the height position of the actual pallet unloading device 70. Since it is located at a lower position than that, specifically, as a mechanism, first, the fork pawl p is lowered, and then the fork pawl p is horizontally moved to the lower side of the bottom portion 61 of the actual pallet 60 in the mold material loading work position. Then, the fork claw p is raised, and the actual pallet 60 is horizontally moved to the actual pallet unloading device 70 side so that the actual pallet 60 is on the actual pallet unloading device 70, and then the fork claw p is lowered to remove the actual pallet 60. The pallet unloading device 70 is configured so that it can be unloaded onto the pallet unloading device 70.

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 real pallet 60 has been removed is lowered to the empty pallet receiving position, and another new empty pallet 50 waiting on the empty pallet waiting device 40 is replaced by the empty pallet waiting device 40. Are transferred to the pallet mounting table 310.

By repeating the above series of operations, a series of mold material unloading work is carried out.

In order to supply the empty pallet 50 to the empty pallet storage / supply device 20, first, the empty pallet carry-in device 9 is used.
The empty pallet 50 conveyed by 20 is raised to the height position of the empty pallet carry-in device 920 and placed on the empty pallet supply table 910 having its ends adjacent to each other.
Next, the empty pallet 50 on this empty pallet supply table 910
Are picked up by the pallet transfer mechanism 211 (221) of the empty pallet transfer device 210 (220), and the empty pallet transfer device 210 (220).
Reprinted above.

FIG. 17 shows a cycle of the above series of operations. In the figure, T is the cycle of one cycle, t ₁ is the time required to lower the pallet platform 310 in the pallet lifting device 40 to the empty pallet receiving position, and t ₂ is the empty pallet waiting device 40 from the empty pallet standby device 40. Time required to transfer to the pallet table 310,
t ₃ is the time required to raise the pallet mounting table 310 to the mold material loading work position, t ₄ is the time required to load the mold material 80 on the empty pallet 50, t ₅ is the actual pallet 60 from the pallet mounting table 310 to the actual pallet The time required for the transfer operation to the carry-out device 70 is shown.

Since the conventional transfer (transfer) mechanism is used for transferring (transferring) the empty pallet and the actual pallet between the respective devices, the time required for the transfer (transfer) work is different from the conventional one. It is almost the same. In addition, the ascending / descending speed of the pallet mounting table 222 is the same as that when the conventional pallet lifter is used, and the required ascending / descending distance is equal to that of the conventional equipment (typically several hundred m
It is necessary to be a little longer than (about m) (usually at least about 1
Approximately 000 mm), while the time required for raising and lowering is about 3 seconds in the conventional equipment as described above,
The equipment of the present invention requires about 5 seconds and about 2 seconds in addition.

Summarizing these, t ₁ = about 5 seconds, t ₂
= About 3 to 5 seconds, t ₃ = about 5 seconds, t ₄ = about 3 to 5 seconds / piece,
t ₅ = approximately 3 to 5 seconds.

Then, the loaded mold materials are band-tightened,
When the packing work is performed on the actual pallet unloading device 70, if the average number of mold materials loaded per pallet is 5, for example, 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, the time required for banding and wrapping the mold material is about 12 to 15 seconds as described above, which is smaller than the above-mentioned about 31 to 45 seconds, and therefore can be sufficiently performed within the above cycle time. Also, the time required to transfer the empty pallets from the empty pallet carry-in device 920 to the empty pallet transport device 20 is shorter than the above-mentioned about 12 seconds per pallet. Therefore, the cycle time in this case is about 31 to 45 seconds (about 38 seconds on average), and the time required to carry out the same number of mold materials using conventional equipment [that is, T ₁ (T ₂ )] The value of T ₁ (T ₂ ) = approximately 46 when T _{3 is} the larger one and the number of mold materials is 5.
~ 50 seconds, average 48 seconds].

To what extent the cycle time can be shortened, the number of mold materials is changed and calculation is performed for each case. When the average number of mold materials loaded per pallet is 7, T = about 37 to 51. It is about 4 on average in seconds
It is 4 seconds, while T ₁ (T
₂ ) or T ₃ whichever is larger [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, which is about 55.5 on average. Since it is seconds, it is more advantageous in terms of time to use the equipment of the present invention for about 11.5 seconds per cycle.

When the average number of mold materials loaded per pallet is 3, T = about 25 to 35 seconds and the average time is about 30 seconds. On the other hand, when the conventional equipment is used, the average value 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 time when using the equipment of the present invention is significantly advantageous, about 18 seconds. I understand.

Further, the case where the number of mold materials is relatively large will be examined. When the number of mold materials is 20, T = (about 5 seconds) + (about 3 to 5) when the equipment of the present invention is used. 5 seconds)
+ (About 5 seconds) + [20 x (about 3 to 5 seconds)] + (about 3 to 5
Second) = about 76 to 120 seconds, which is an average of about 98 seconds, while T ₁ (T ₂ ) or T ₃ when the conventional equipment is used.
Whichever is greater [T ₁ (T ₂ ) = approximately 46 to 50
Seconds, T ₃ = (about 3 seconds) + (about 3-5 seconds) × 20 + (about 1
2 to 15 seconds) + (about 3 seconds) + (about 3 to 5 seconds) + (about 3 to
5 seconds) = about 78 to 121] = about 84 to 131 seconds, which is about 107.5 seconds on average, so that the equipment of the present invention is still used for about 9.5 seconds and temporally. It is advantageous. Then, even if the number of mold materials is increased to more than 20 and thereafter, it can be shortened on average by about 9.5 seconds by using the equipment of the present invention as compared with the case of using the conventional equipment. This reduction of about 9.5 seconds is an extremely large reduction. Especially when the number of mold materials is small
It has a significant effect on production efficiency.

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

If the average number of mold materials loaded on one pallet is 20 using the conventional equipment,
As described above, 20 mold materials are unloaded in about 107.5 seconds. According to this, full operation for 8 hours a day, 20x
(8 × 60 × 60 ÷ 107.5) = 5358 pieces of mold material have been carried out. Therefore, in this respect, if the number of mold materials per pallet decreases as a result of high-mix low-volume production, the total carry-out amount (total production amount) per day is unavoidable. However, when the equipment of the present invention and the conventional equipment are compared for the case where the number of mold materials per pallet is the same, it is always better to use the equipment of the present invention than the case of using the conventional equipment regardless of the number of mold materials. Since the total production amount can be increased, the equipment of the present invention is not only effective in preparation for high-mix low-volume production, but also in the case of low-volume high-volume production, it is equivalent to or slightly more productive than conventional equipment. Are better.

Furthermore, in the present invention, the work cycle time can be shortened because it is possible to supply a pallet of a desired size according to the number of mold materials without affecting the work cycle time as described above. It will be possible to further increase the transportation efficiency without compromising the effect, and it will be possible to substantially increase the supply to the market substantially.

Specifically, if only 10 pallets can be accommodated in a pallet that can accommodate 20, for example, the transportation efficiency is halved simply. Therefore, as a pallet for accommodating 10 mold members, a pallet capable of accommodating 10 molds has the best transportation efficiency. In the present invention, it is possible to select and use a pallet having a size that does not cause a wasteful storage space depending on the number of mold materials without affecting the work cycle time. The effect of improving transportation efficiency can be obtained all at once.

Therefore, when viewed comprehensively, in terms of the amount of mold material supplied to the market and the cost of mold material, according to the present invention,
It is possible to realize and maintain a production amount and cost that are in no way inferior to the conventional case in which a large number of mold materials are loaded and the number of mold materials loaded per pallet is large.

As the die material unloading equipment of the present invention, empty pallets are supplied from an empty pallet storage / supply device to an empty pallet standby device, then supplied from the empty pallet standby device to a pallet mounting table in a pallet elevating device, then Raise the pallet mounting table to raise the empty pallet to the mold material transfer work position where the mold material is transferred to it, and after the mold material transfer work by manual operation, the actual pallet with the mold material transferred is operated by the manual switch operation. It is preferable that the series of operations of transferring to the pallet unloading device and lowering the pallet mounting table to the empty pallet receiving position are automatically and sequentially repeated.

In order to automatically perform the above-mentioned series of operations, the present invention does not particularly show it.
It can be configured as follows. That is, a first sensor that senses the pallet mounting table when it is lowered to the pallet receiving position and a second sensor that senses it when the empty pallet is received at a fixed position in the empty pallet standby device. A sensor and a third sensor that detects when the empty pallet has reached the fixed position of the pallet mounting table, and when the empty pallet mounted on the pallet mounting table has reached the template transfer work position. A fourth sensor for detecting it is provided, and the first sensor, the second sensor, and the third sensor are electrically connected to the power source and the operation power unit of the pallet transfer mechanism in the empty pallet standby device, respectively. However, the empty pallet standby device receives the electric signals from the first sensor, the second sensor, and the third sensor, and the empty pallet standby device receives a fixed position in the empty pallet standby device. 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 continue moving the empty pallet, and at other times, the empty pallet is stopped except for the manual operation.

At the same time, the second sensor, the third sensor, and the fourth sensor are electrically connected to the power source and the operating power unit of the pallet transfer mechanism in the pallet mounting table, respectively, and the pallet lifting device has the above-mentioned configuration. In response to the electric signal from the second sensor, the empty pallet transfer mechanism in the pallet mounting table operates to receive the empty pallet when the pallet mounting table is lowered to the pallet receiving position, and the electric signal from the third sensor is received. When the empty pallet arrives at the fixed position of the pallet mounting table in response to the signal, the pallet transfer mechanism stops, and then the pallet mounting table rises to raise the empty pallet, and the electric signal from the fourth sensor is sent. When the empty pallet received and placed on the pallet mounting table reaches the mold material transfer work position, the pallet mounting table stops and the manual switch When the pallet mounting table lowered by the operation receives the electric signal from the first sensor and reaches the empty pallet receiving position, the pallet mounting table stops and the empty pallet transfer mechanism in the pallet mounting table operates to empty the pallet mounting table. Configure to receive a pallet.

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 to determine whether or not the pallet has reached a fixed position. You can

In order to detect that the pallet has reached a fixed position, a pressure sensor is used at a portion where the optical path is not blocked when an optical sensor such as an infrared sensor is used. In the case, the pallet may be on any device in the equipment of the present invention as long as it is a part that comes into contact with the pallet at that position when it reaches a fixed position. It may be provided at a distant position.

Further, in the present invention, as shown in FIGS. 5 and 6, an empty pallet storage / supply device is provided so that when the pallet mounting table is moved up to the mold material loading work position, it comes out above the ground surface. An empty pallet standby device and a pallet lifting device are preferably provided in the underground pit.

According to the above structure, most of the devices constituting the equipment are buried underground and there are few portions projecting above the ground surface, so that the ground surface and the space above the ground surface are Since it can be effectively used and each device does not exist above the ground surface, a sufficient passageway for the worker can be secured, work efficiency can be improved, and the body of the device can be caught in the machine part during the mold material unloading work. It is possible to prevent the device from being hit and injured. Further, there is an effect that the device will not be dropped and collapsed at the time of a disaster such as an earthquake and the worker will not be exposed to danger, and that a stricken road can be secured.

[0104]

As described above, the mold material unloading facility of the present invention has an empty pallet storage / supply device in which a plurality of empty pallet transfer devices are arranged in the height direction, and a pallet mounting table that can be moved up and down. The pallet mounting table is provided with a pallet lifting device and a pallet standby device that can be moved up and down so as to be adjacent to each of the former two, and after transferring an empty pallet from the empty pallet storage / supply device to the empty pallet standby device. It is configured to transfer to an actual pallet unloading device by moving the pallet loading table to a mold material loading position by raising the pallet mounting table to the mold material loading position. It is a thing, so that the carrying out process is completely different from the conventional equipment,
In particular, since the traverser used in the conventional equipment is not used, the time required for one work cycle can be made independent of the device capacity, and as a result, the number of mold materials loaded per pallet is small. Also, the working time cannot be shortened to a certain extent by being restricted by the limit time due to the limit of the device capacity, and the carry-out work time per cycle can be shortened according to the number.

Further, since it is not necessary to move the real pallet in a state in which the mold materials are loaded suddenly in the horizontal direction or to suddenly stop the work, banding of the mold materials and packaging work are performed on the real pallet. Since it can be performed after the transfer from the mounting table to the actual pallet unloading device, one working cycle can be further shortened.

Further, since the empty pallets are stored in the height direction, a desired pallet can be supplied to the mold material loading position by the pallet lifting device and the empty pallet standby device, without impairing the above effect. Moreover, it is possible to supply a pallet of an appropriate size according to the number of mold materials loaded per pallet without requiring a vast stock space. Therefore, effective use of space can be achieved, and as a result, real pallets in a form with good transport efficiency can be supplied in a short time, and as a result, transport costs can be reduced and the amount supplied to the market can be substantially increased.

Thus, by using the mold material unloading equipment of the present invention, even if the average number of mold materials loaded on one pallet decreases due to the production of a wide variety of products in small quantities, it is compared with the case where the conventional equipment is used. As a result, it is possible to substantially dramatically increase the total number of mold materials that can be carried out (produced) per day, and it is possible to contribute to stable supply of mold materials and stable price.

Further, since the equipment of the present invention basically uses each device in the conventional equipment and the arrangement thereof is changed, since each device can basically use the conventional equipment, The present invention has an effect that it can be realized at a relatively low cost without requiring a large facility cost newly.

Further, in the above-mentioned mold material carrying-out facility, when the pallet mounting table is moved up to the mold material loading work position, it comes out above the ground surface so that an empty pallet storage / supply device, an empty pallet standby device and a pallet lifting device are provided. When is installed in the underground pit, most of the devices that make up the equipment are buried underground and there are few parts that project above the ground surface, so the ground surface and the space above the ground surface Since each device can be effectively used and each device does not exist above the ground surface, the operator's passage can be sufficiently secured, the work efficiency can be improved, and the body of the device can be sandwiched by the machine part of the device when carrying out the mold material discharge work. , It is possible to prevent injury by hitting the body against the device. Further, there is an effect that the device will not be dropped and collapsed in the event of a disaster such as an earthquake to endanger workers, and an evacuation route can be secured.

Further, in the above-mentioned die material discharge facility, the pallet mounting table is provided with a vertically movable punching lifter whose maximum lift position is higher than the vicinity of the uppermost end portion of the pallet. If the position is always set to the uppermost position of the pallet during the loading of the mold material by lowering it, when loading the mold material into the empty pallet, the work position of loading the mold material is always near the top end of the pallet. Since the pallet is at the height position, the side frame of the pallet does not get in the way and the loading work can be performed easily and the loading efficiency can be improved.

Further, in the above, when the mold material loading work position is always set to a height of 700 to 1000 mm above the ground, the mold material loading work is always 700 to 1000 mm above the ground. ~ The position is suitable for loading mold materials, which is in the range of the height under the chest, so you do not have to take an unreasonable posture during loading work, reduce the degree of fatigue and the possibility of accidents and improve work efficiency. You can expect the effect that you can.

[Brief description of drawings]

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

FIG. 2 is a diagram showing an example of a palette.

FIG. 3 is a diagram showing a time distribution of a mold material unloading process when a small variety of products are mass-produced using a conventional mold material unloading facility.

FIG. 4 is a diagram showing time distribution of a mold material unloading process in the case of performing high-mix low-volume production using a conventional mold material unloading facility.

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

FIG. 6 is a schematic side view showing an example of the mold material unloading facility of the present invention, and is a view connected to the left end of FIG. 9.

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

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

9 is a view for explaining the pallet lifting device, which is a front view of the pallet lifting device of FIG. 12;

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

FIG. 11 is an explanatory diagram for explaining a step of unloading a mold material using the mold material unloading facility of the present invention.

FIG. 12 is an explanatory view for explaining a part of a mold material unloading process using the mold material unloading facility of the present invention.

FIG. 13 is an explanatory diagram for explaining another part of the mold material unloading process using the mold material unloading facility of the present invention.

FIG. 14 is an explanatory view for explaining still another part of the mold material carrying-out step using the mold material carrying-out facility of the present invention.

FIG. 15 is an explanatory view for explaining still another part of the mold material unloading process using the mold material unloading facility of the present invention.

FIG. 16 is an explanatory diagram for explaining still another part of the mold material unloading process using the mold material unloading facility of the present invention.

FIG. 17 is a diagram showing time distribution in a mold material unloading process when a variety of products are produced in small quantities by using the mold material unloading facility of the present invention.

[Explanation of symbols]

 10 Mold material unloading equipment 20 Empty pallet storage / supply device 210 Empty pallet carrier device 220 Empty pallet carrier device 30 Pallet lifting device 310 Pallet loading table 40 Empty pallet standby device 50 Empty pallet 60 Real pallet 70 Real pallet unloader 80 Model material

Claims (4)

[Claims] 1. An empty pallet storage / supply device configured by arranging a plurality of empty pallet transfer devices capable of transferring and stopping an empty pallet in a height direction, and a pallet loading device having an empty pallet transfer mechanism. A pallet mounting table is provided, and the pallet mounting table is moved to a position for receiving an empty pallet, a work position for loading a mold material onto an empty pallet above the receiving position, and an actual pallet unloading device for an actual pallet loaded with the mold material. Of the transfer work position, whichever is higher, and a pallet elevating device configured to elevate the pallet elevating device when the pallet elevating device receives the empty pallet from the empty pallet storage / supply device and waits. And an empty pallet standby device having an empty pallet transfer mechanism that can be transferred to a table. Each of the pallet mounts in the pallet lifting / lowering device at the end of each carrier in the empty pallet storage / supply device and the empty pallet receiving position while being installed between the end of the pallet storage / supply device and the pallet lifting device. A mold material unloading facility, which is configured so that it can be freely moved up and down so as to be adjacent to. 2. When the pallet mounting table rises to the mold material loading work position, it comes out above the ground surface,
An empty pallet storage / supply device, an empty pallet standby device, and a pallet lifting device are provided in an underground pit.
Equipment for carrying out the mold material described. 3. The pallet mounting table is provided with a hollowing lifter which can be moved up and down such that the highest lift position is higher than the vicinity of the uppermost end of the pallet, and the hollowing lifter successively descends to load the mold material. The mold material unloading facility according to claim 1 or 2, wherein the working position thereof is always set to be substantially the uppermost end position of the pallet. 4. The work position for loading the mold material is always 7 above the ground.
The mold material unloading facility according to any one of claims 1 to 3, which is configured to be set to a height of 00 to 1000 mm.