JPH0218946B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a mold feeding method for efficiently and continuously feeding a mold in a casting operation.

(Prior art) In general, in a mold casting line where molds are sequentially and consistently processed through multiple processes, the molds are processed in a certain order, at predetermined intervals, and at predetermined intervals. I need to send it.

However, in the past, the mold could not be sent until all processes were completed, even if the times required for each process were different.

As a result, the amount of movement of the mold in one cycle is determined by the time of a long process, and waiting time occurs in short processes, making efficient continuous operation impossible.

In addition, in the conventional technology, the lines are simply arranged in the order of the processes, so when multiple processes with different required times are arranged on the same line, a space is required between each process for feed adjustment, and the overall However, there was a problem in that the casting line equipment became larger.

(Problems to be Solved by the Invention) The prior art has various problems as described above.

The present invention provides a mold feeding method that eliminates the above-mentioned problems by efficiently transporting molds without increasing the area occupied by the equipment even if there are differences in process throughput. The purpose is to

[Structure of the invention]

(Means for Solving the Problems) In order to achieve the above object, the mold feeding method of the present invention has the following basic requirements: Select the basic required process with working time T ₁ and the longest required process with maximum required working time T ₂ ,
Calculate the ratio T ₁ :T ₂ between the basic required work time T ₁ and the longest required work time T ₂ , find the integer value R that is immediately above that value, and calculate the basic required process and the longest required process. are arranged in different lines and connected to each line, and the mold feeding operation in the circulation line is controlled so that the line having the basic required process has R times for one time in the line having the longest required process. It is composed of:

(Operation) Select the basic required process having the basic required working time T ₁ and the longest required process having the maximum required working time T ₂ and calculate the ratio T ₁ :T ₂ of the above T ₁ and T ₂ . Find the integer value R that is immediately above that value, place the basic required process and the longest required process on different lines, connect each line, and change the mold feeding operation in the circulation line to the longest required process. The line with the basic required process is R
Since the process is controlled so that the work throughput is approximately equal to the throughput in the longest required process and the throughput in the basic required process for one cycle in which all lines are operated.

In addition, since the basic required process and the longest required process are placed on different lines, other processes can be easily placed on any of the above lines as appropriate while considering the required work time and the type of process. Furthermore, by providing voids only at the connecting portions between the lines, the number of voids can be reduced and molds can be fed efficiently without requiring large equipment.

(Example) Next, how the mold feeding method of the present invention is implemented in a casting line will be specifically explained.

Figure 1 shows a line with four sides, two molds 2 are placed on each rectangular plate 1 with an aspect ratio of 2:1, and the plate 1 circulates along the line without changing its direction. It is becoming more and more common. A movable rail 3 as a moving device for the plate 1, a fixed rail 4 as a supporting device for the plate 1, a feeding device, etc. are provided. On the line, ~ indicates each casting process: mold heating or cooling, core placement, pouring, reversing, sprue folding, lift-folding, punching, and product transfer. .

Each of the above-mentioned processes requires different working time, so in order to perform circulating movement without any trouble, it is necessary to move the casting line along the side of the casting line where the molds 2 on the plate 1 are lined up in series in the direction of movement of the plate 1. In other words, both the left and right sides of FIG. 1 (hereinafter referred to as serial lines) and the sides of the casting line where the molds 2 on the plate 1 are lined up in parallel with respect to the direction of movement of the plate 1, that is, both the upper and lower sides of FIG. The movement of the movable rail 3 is made different depending on the parallel line (parallel line), and the movement of the movable rail 3 is made different depending on the line (parallel line). The feed of plate 1 must be adjusted accordingly.

For example, each casting process requires 14 seconds of pouring, 25 seconds of reversal, or 15 seconds of weir folding (gate folding, lifting).
If the required time is 27 seconds, etc., for the mold cutting process, the time required for the pouring process is selected as the basic time, and the ratio of the time required for the mold cutting process, which is the process that requires the longest time, is calculated. , 27/14≒1.9 is obtained, and the nearest higher integer ratio R=2 is determined, and when the number of plate feeds in the serial line that includes the pouring process, that is, the basic required process, is 2, the die cutting process, that is, The number of plate feeds on the parallel line that includes the longest required process is set to 1, and the number of plate feeds on the other series line and parallel line is set to 2 and 1 times, respectively, in the transfer section of both lines. The casting line is operated continuously by adjusting the In this case, if the plate 1 is made into a rectangle with an aspect ratio of 1:2 as in the embodiment shown in FIG. The distance of each line, that is, the line whose short side is one unit, can be made the same. Assuming that the time required for the pouring process is 13 seconds and the time required for the die cutting process is 28 seconds, R=3 is determined from 28/13≈2.1, and the number of feeds is set to 3:1.

Next, each of the transfer sections described above is provided with feeding devices No. 1 to No. 4 as shown in FIG. No. 1 and No. 3 have the same structure, and No. 2 and No. 4 have the same structure, and each performs the same feeding operation. The plate feeding operation by the movable rail and the feeding device will be explained with reference to FIGS. 2 and 3.

Note that in both figures, the areas marked with an x in the plate squares indicate that no plate exists and are empty spaces. FIG. 2 shows the feeding operations of feeding devices No. 1 and No. 3, and depicts No. 3 in FIG. 1 as viewed from the direction of arrow A. The feeding operation is performed in the order of ○A → ○B → ○C → ○D → ○H → ○. As can be seen from the figure, in the series line, the movable rail 3 is in the states of ○A, ○C and ○Ho
On the other hand, in the parallel line, the movable rail 3 performs a feeding operation in the states of ○A and ○E. Therefore, the feeding operation by the movable rail 3 in the series line is performed twice while the feeding operation by the movable rail 3 in the parallel line is performed once.

Next, the feeding device No. 3 simultaneously sends the plate in the state of ○B, and becomes the state of ○C, and in the state of ○D, it feeds the plate, and becomes the state of ○E.

FIG. 3 shows the feeding operations of feeding devices No. 2 and No. 4, and depicts No. 4 in FIG. 1 as viewed from the direction of arrow B. The feeding operation is performed in the order of ○i → ○ro → ○ is → ○ → ○ho → ○. ○I to ○ in FIG. 3 and ○I to ○ in FIG. 2 are drawn so that those with the same symbols operate simultaneously.

As can be seen from Fig. 3, in the series line, the movable rail 3 performs the feeding operation in the ○, ○, and ○ conditions, whereas in the parallel line, the movable rail 3 performs the feeding operation in the ○, ○, and ○ conditions. An action is taken. Therefore, the feeding operation by the movable rail 3 in the series line is performed twice while the feeding operation by the movable rail 3 in the parallel line is performed once.

Next, the feeding device No. 4 continues to feed the plate twice from the ○ro state to the ○ha state, and in the ○ state, it feeds the plate once and becomes the ○ho state.

As described above, in a mold feeding method consisting of a circulation line that has multiple processes with different required working times, the required working time of the pouring process is selected as the basic time T ₁ , and the longest required working time process for this is selected as the basic time T 1. The working time is T ₂ , one of the pair of lines consisting of four sides is selected as the pouring process of T ₁ , and one of the other pair of lines is selected as the process of T ₂ , and T ₂ /T The nearest higher integer ratio R of the value of ₁
, the number of times the plate is fed by the movable rail in the line that includes the pouring process is set to R times, the number of times the plate is fed by the movable rail in the line that includes the process of _T2 is set to be one time, and the number of times that the plate is fed by the movable rail in the line that includes the process of T 2 is set to be 1. In the loading section, by feeding the plates corresponding to the R times and once, the casting line can be operated continuously and efficiently.

Since the ratio of the number of plate feeds by the movable rail in the line including the pouring process, that is, the basic required process and the longest required process, is R:1 as described above, the number of processing means on the line of the basic required process. Even if is 1, R objects on the plate can be processed by feeding R times. Therefore, if the number of processing means on the line of the longest required process is R, the processing amount of the processed material will be balanced, and the processing amount will be improved, although the cycle operating time will be slow. can be done.

In addition, an appropriate gap is provided at the part where each line touches each other, and this is used as a mold transfer area, and the mold that has been sent by the feeding operation of each line is adjusted and transferred to the next line. By mounting the mold, the feeding of the mold can be rationally and easily adjusted.

Furthermore, the mold or mold plate is quadrilateral, the ratio of the length of the short side to the long side is 1:R, and the basic required processes are arranged on a line where the long side is one unit, and the short side is one unit. By arranging the longest required process in a unit line, there is no need to create gaps in the transfer section or gaps between molds or between mold plates, which reduces the moving distance and, in turn, reduces the equipment area. It can be done.

Next, a description will be given of mold feeding device No. 3 for implementing the method of moving molds in the transfer section of the casting line shown in FIGS. 4 to 6. This feeding device is used in the cases shown in FIGS. 1 to 3.

On the upper part of the support frame 11, feed rollers 12 are arranged in two rows in the direction of movement of the plates 1, and three for each plate 1, and serve as receivers for the plates 1.

A bracket 14 is fixed to the lower support frame 13, and the feed cylinder 15 is rotatably supported substantially horizontally with respect to the bracket 14. An adjustable stop 20 is movably connected and fixed to the support frame 19 in front of the rod 16. The lower end of the actuating plate member 17 is supported by being screwed onto a bracket 21 fixed to the support frame 13 with a pin 22, and the upper end is supported by inserting a pin 25 into a vertically long hole 24 provided at the lower part of the pushing body 23. It is supported so that vertical sliding and rotation are possible.

The pushing body 23 is inserted through and supported by two parallel tie bars 26 fixed to the support frames 11 and 27 via bearings 37, and is configured to be able to slide forward and backward in the feeding direction of the plate 1. A pressing support member 35 is fixed to the upper part of the pushing body 23, and a front pressing piece 29 and a rear pressing piece 28 are rotatably attached to the front and rear positions of the pressing support member 35 in the feeding direction with pins 30, and are attached to the end surface of the plate 1 during pressing operation. It is configured to be compatible. The front pressing piece 29 is provided with a stopper 31 so that it does not bend backward even when bent forward, and a coil spring 32 is provided on the back surface of the pressing piece 29 and is attached to the rear so that the pressing piece 29 can quickly stand up from the bent forward state. The rear pressing piece 28 is formed in an inverted L shape and is designed to stand up on its own when weight changes around the pin 30, but an auxiliary spring 33 is attached to the protrusion 38 to help the rear pressing piece 28 stand up. Furthermore, an adjustable stopper 34 allows the rear pressing piece 28 to bend forward and prevent it from bending backward. stoppa 3
Reference numeral 6 positions the plate 1 and is adjustable.

Feeder No. 1 has exactly the same structure as No. 3.

Next, mold feeding device No. 4 for carrying out the method of moving a mold in the transfer section of a casting line shown in FIGS. 7 to 12 will be explained. This feeding device is used in the embodiments of FIGS. 1-3.

On the upper part of the support frame 40, feeding rollers 41 are arranged in two rows in the feeding direction of the plate 1, and three feeding rollers are arranged for each plate to serve as receivers for the plate 1.

A bracket 44 is fixed to the lower support frame 43, and the feed cylinder 45 is rotatably supported substantially horizontally with respect to the bracket 44, and the rod 46 and the center of the actuating plate member 47 are rotated via a pin 48. A stopper 50 is movably connected and fixed to the support frame 49 in front of the rod 46. The lower end of the actuation plate member 47 is connected to the support frame 43.
It is hinged and supported by a pin 52 to a bracket 51 fixed to the pusher 53, and the upper end can be slid up and down and rotated by inserting a pin 55 into a vertically long hole 54 provided at the bottom of the pusher 53. I support it as such.

The pushing body 53 is inserted and supported by two parallel tie bars 56 fixed to the support frames 40 and 57, and is configured to be able to slide forward and backward in the feeding direction of the plate 1.

A pressing support member 39 is fixed to the upper part of the pushing body 53, and a front pressing piece 59 is provided at the front and rear positions in the feeding direction.
The rear pressing piece 58 is rotatably attached with a pin 60 and has a height such that it can press a recess 66 in the center of the end face of the plate 1. The front pressing piece 59 is provided with a stopper 61 so that it does not bend backward even when bent forward, and a coil spring 62 is provided on the back surface of the pressing piece 59 and is attached to the rear so that it can quickly stand up from the bent forward state. The rear pressing piece 58 is formed in an inverted L-shape and is designed to stand up on its own due to changes in weight around the pin 60.
is attached to help the rear pressing piece 58 stand up, and an adjustable stopper 64 allows the rear pressing piece 58 to bend forward and prevent it from bending backward.

A plate positioning member 70 as a plate positioning member and an interlocking member 71 with rollers are provided on both sides of the front of the plate 1 of the feeding device No. 4 in the feeding direction.

The plate positioning member 70 positions one of the plates 1 being transported, and is rotatably attached at its center to an L-shaped bearing member 73 fixed to the support frame 72. The roller interlocking member 71 is rotatably attached at its center to a bearing member 75 fixed to the support frame 57. The interlocking member 71 with rollers is an interlocking member that has a roller 76 on its upper part, and a plate positioning member 70 on its lower part.
is connected to the lower part of the body by an adjustable connecting member 77.

Since the plate positioning member 70 is structured so that it is always in a fallen state (the dotted line position in FIG. 7), that is, in a backward bent state, the interlocking member 71 with rollers is always in an upright state via the connecting member 77. (The dotted line position in Figure 7).

The plate positioning member 70 and the interlocking member 71 with rollers are located on both sides of the pushing body 53 provided between the movable rails 3 and in front thereof.

Feeding device No. 2 also has exactly the same structure as No. 4.

Next, the operation of the mold feeding device will be explained.

First, the operation of feeder No. 3 will be explained. When the movable rails 3 in the series line and the parallel line operate simultaneously in the casting line, the plate is sent out in the feeding device No. 3 (see Figure 2).

Next, as the rod 16 of the feed cylinder 15 of feed device No. 3 moves forward (moves to the right in FIG. 4), the front pressing piece 29 is moved through the actuating plate member 17, the pushing body 23, and the pressing support member 35. and rear pressing piece 28
moves forward, so the plates in which both the pressing pieces 28 and 29 are engaged are fed at the same time (Fig. 2, circle c).

Next, when the movable rail 3 in the series line is operated, the plate is fed out (○D in Figure 2), and a space for one plate is created, so the feeding cylinder 15
With the second operation, the plate is pushed into the space (see Figure 2). Next, when the movable rails 3 in the series line and the parallel line operate simultaneously, the plate is fed out and at the same time, the plate is fed in (see circle in FIG. 2).

As mentioned above, in the casting line, the serial line,
Between the time when the movable rails 3 in the parallel line operate all at once and the time when they operate all at once again, the movable rail 3 in the series line operates one more time, but the movable rail 3 in the parallel line does not operate, so the movable rail 3 The number of operations is 2:1 between the series line and the parallel line.

The operation of feeder No. 1 is exactly the same as No. 3.

Next, the operation of feeding device No. 4 will be explained. When the movable rails 3 in the series line and the parallel line operate simultaneously in the casting line, the plate is sent out in the feeding device No. 4 (circle in FIG. 3). Next, press support member 3
The front pressing piece 5 is pivoted to the pressing body 53 via 9.
9 and the rear pressing piece 58, since the rod 46 of the feed cylinder 45 moves back, the actuating plate member 47 and the pushing body 5
3, and then comes into contact with the back surface of plate 1 and bends forward to pick up the sent plate.

When the rear pressing piece 58 at the rear in the feeding direction engages with the recess 66 on the rear end of the plate, the rod 46 moves forward and feeds the plate onto the roller 41 while pressing the plate. With one operation of the feed cylinder 45, the plate is fed by one plate, and while the next plate is being transferred, two of the feed cylinders 45 are moved.
By the second operation, the front pressing piece 59 sends the plate to a predetermined position (circle in FIG. 3). Then,
The roller interlocking member 71 is pushed down via the roller 76 by the front lower surface of the sent plate.
Therefore, the plate positioning member 70 is interlocked with the connecting member 77 to be in an upright state, and the rear end face of the plate is pressed and fixed for positioning. At this time, the rod 46 remains moved forward. When the second plate is fed as described above by the movable rail 3 in the series line, the rod 46 retreats again, and in conjunction with this, the rear pressing piece 58 also retreats and engages with the rear end surface of the plate, and then, As the rod 46 moves forward, the plate is pressed and sent forward over the rollers 41 until it comes into contact with the upright plate positioning member 70 and stops, and the plate is placed at a predetermined position with a predetermined distance from the previous plate. Stop (Fig. 3).

As described above, the movable rail 3 in the series line operates twice, and the feeder No. 4 also operates to feed the feeder.
When the two plates are aligned in No. 4, the movable rail 3 in the parallel line is operated once and the plates are sent out. At this time, the movable rail 3 in the serial line is also activated and the third plate is fed into the feeding device No. 4 (see ◯ in FIG. 3).

The operation of feeder No. 2 is exactly the same as No. 4.

In the description of the embodiment, the front pressing pieces 29, 59 and the rear pressing pieces 28, 58 are attached to pressing support members 35, 39, and this pressing support member is attached to the pressing bodies 23, 53.
However, it is not necessary to have such a structure, and the pressing piece may be rotatably supported at an appropriate pressing portion. Further, in the description of the embodiment, the pushing bodies 23, 53 are reciprocated by the actuating plate members 17, 47, but they do not necessarily have to be plate members, and any appropriate actuating member may be used. Further, the pressing pieces do not necessarily need to be provided at the front and rear.

〔Effect of the invention〕

Select the basic required process with the basic required working time T ₁ and the longest required process with the maximum required working time T ₂ , calculate the ratio T ₁ :T ₂ of the above T ₁ and T ₂ , and calculate the Find the most recent integer value R, place the basic required process and the longest required process on different lines, connect each line, and transfer the mold feeding operation in the circulation line to the line with the longest required process. By controlling the line having the basic required process R times for every one operation of Since the amount can be approximately the same for one cycle and an efficient feeding method can be achieved, production efficiency can be improved.

In addition, since the basic required process and the longest required process are placed on different lines, other processes of the casting line can be easily placed on any of the above lines, taking into account the required work time and the type of process. In addition, by using the connection part between the lines as the transfer part, there is no need to provide a large number of voids as in the conventional technology, and the mold can be made more efficiently with smaller equipment. It has the effect of being able to be sent.

[Brief explanation of drawings]

FIG. 1 is an example of the work in which the mold feeding method of the present invention is implemented, and is a layout diagram of a casting line, and FIGS. A diagram explaining the order of the mold feeding method,
Figures 4 to 6 show an embodiment of the mold feeding device No. 3 used to carry out the method of the present invention, with Figure 4 being a partially cutaway elevation view and Figure 5 being FIG. 4 is an enlarged front view of a part of the operating part, FIG. 6 is a side view thereof, and FIGS. 7 to 12 are also examples of mold feeding device No. 4 used for carrying out the method of the present invention. So, the seventh
The figure is a partially cut-away elevational view, FIG. FIG. 11 is a cross-sectional view of the plate positioning member, and FIG. 12 is a plan view of mold feeding device No. 4. 1... Plate, 2... Mold, 3... Movable rail, 4... Feeding rail,... Pouring process as the basic required process,... Mold cutting process as the longest required process, No. 1 to No. .4...Mold feeding device.

Claims (1)

[Claims] 1. In a mold feeding method consisting of a circulation line having a plurality of processes having different required working times, a basic required process having a basic required working time T ₁ and a longest required working time having a maximum required working time T ₂ Select the required process, calculate the ratio T ₁ :T ₂ of the basic required working time T ₁ and the longest required working time T ₂ , find the integer value R immediately above that value, and The required process and the longest required process are arranged in different lines and the lines are connected, and the mold feeding operation in the circulation line is performed R times in the line having the basic required process for one time in the line having the longest required process. A mold feeding method characterized by controlling the mold so that 2. The mold feeding method according to claim 1, wherein the processing means are arranged so that the ratio of the number of processing means for the basic required step to the number of processing means for the longest required step is 1:R. 3. A patent claim in which an appropriate gap is provided at the part where each line touches each other and this is used as a mold transfer section, and the mold is moved in the transfer section to match the mold feeding operation of each line. The mold feeding method described in scope 2. 4 The mold or the plate for the mold is quadrilateral,
The ratio of the length of the short side to the long side is 1:R, and the basic required processes are arranged on a line with the long side as one unit,
4. The mold feeding method according to claim 3, wherein the longest required process is arranged in a line in which the short side is one unit.