JPH07136758A - Vertical flaskless casting line system - Google Patents

Abstract

PURPOSE:To prevent mis-pouring at set up change, and to change the set up in gate cutting process at good timing by having the tracking display means to identify a casting product name, etc., of mold in real time at the time of pouring molten metal. CONSTITUTION:A casting schedule input means 29 displays the information on scheduled casting product name, a number of scheduled flasks on the day, which is inputted from a key board 29a, on CRT29b and transmits them to a central control unit 31. Further, the central control unit 31 transmits them to a pouring instructing means 27. Also, the central control unit 31 receives the scheduled casting data beforehand from a scheduled casting data registration device 30. Further, the central control unit 31 transmits a thickness in horizontal direction of a mold 18, which an encoder 23 and sensors 24a, 24 detect, to the pouring instructing means 27. At the same time, the central control means receives casting line information and controls the information on all molds on casting line, executing tracking display on CRT31a. Also, when a first mold at set up change is reached the setting position. a warning means 33 is actuated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work support system for a vertical frameless casting line.

[0002]

2. Description of the Related Art Generally, in a vertical frameless casting line,
After sand is blown into the mold forming space surrounded by the molds to form a mold to form a vertical frameless mold (hereinafter referred to as a mold), the molded mold is extruded horizontally by a driving means such as a cylinder, A sprue is formed in the center of the upper surface of the boundary between adjacent molds that are closely contacted in one row. Then, a pouring device equipped with a ladle containing the molten metal pours the molten metal into the spout along the pouring line while tilting the ladle. In this pouring work, when there are molds with different casting names on the casting line, the pouring worker casts the mold in front of the pouring device that is currently pouring by contact between the site workers. By recognizing the product name, erroneous pouring is prevented when a setup change occurs in which the material of the melt is changed. In addition, a weir folding device may be installed at the final end of the casting line. Then, when the product name of the mold moving on the casting line changes (changeover occurs), it is necessary to replace the dam folding tool. Therefore, in the vertical frameless casting line, accurate tracking and display of the mold progressing on the casting line are important as information support to the site worker.

[0003]

SUMMARY OF THE INVENTION In a vertical frameless casting line, when a molten metal is poured by a pouring device into a gate at the center of the upper surface of a boundary between adjacent molds, a pouring operator The method of recognizing the cast product name of the mold in front of the pouring device is due to communication between workers in the field, and there is no means for recognizing the cast product name of the mold in front of the pouring device in real time. Due to the above, for example, a setup change occurs, the mold to be molded changes, and therefore, when the components of the hot water to be poured into the mold before the setup change and the mold after the setup change, the mold in front of the pouring device There is no way to know when the name of the cast product will change, and there is a high risk of accidental pouring.
Further, this work is not efficient because it is carried out by the contact of the site worker.

[0004]

[Means for Solving the Problems] A vertical mold in which molding sand is blown into a space surrounded by a front mold and a rear mold to form a mold to form a vertical frameless mold, and then the mold is pushed forward. In a frameless casting line, mold thickness measuring means for measuring the thickness of the mold in the advancing direction, casting name input means for inputting a product name to be molded, thickness of each molded mold, product name, etc. The line information management means for managing the casting information of the mold and the pouring device for pouring the molten metal into the mold include the mold information from the line information management means and the current position of the pouring device. In addition to providing pouring instructing means for identifying the mold information of each individual mold, the line information management means is provided with an alarm means for issuing an alarm when the leading mold that has undergone a setup change reaches a predetermined position on the casting line. Characterized by having been installed Vertical-free frame casting line system that.

[0005]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a vertical cross-sectional explanatory view showing an example of a vertical frameless molding method. A molding die 1 includes a molding space 2 surrounded by a front mold 3 and a rear mold 4, each of which is to form a cavity. The front die 3 is fixed to the front die frame 5, and the pin 9
It is formed so as to be rotatable via. Further, the front mold 3 is mounted on a plate 11 which is movable in the horizontal direction via a driving means 12 such as a cylinder. The rear mold 4 is fixed to a rear mold frame 6 which is movable in the horizontal direction via a driving means 10 such as a cylinder. Reference numeral 7 denotes a hopper which is mounted above the molding die 1 through a blow port 13 and accommodates a molding sand 8. Further, an inlet 15 for the molding sand 8 having a shutter 14 is provided at the upper part of the hopper 7, and an air tank 16 is provided so that pressure can be applied to the hopper 7. With the above configuration, the molding die 1, the front die 3 and the rear die 4 are set as shown in FIG. 1, the charging port 15 at the upper part of the hopper 7 is closed by the shutter 14, and compressed air is discharged from the air tank 16. When the sand is supplied into the hopper 7 and a pressure is applied, the molding sand 8 accommodated in the hopper 7 can be blown into the molding space 2 to mold the mold.

FIG. 2 shows a driving means 10 for driving the molded mold.
An example is shown in which the sheet is extruded in the horizontal direction via and is conveyed in a close contact state. First, the carrying procedure is as follows: a molding sand 8 is placed in a molding space 2 surrounded by the molding die 1, the front die 3, and the rear die 4.
Is blown in to mold the mold 18, and then the plate 11 is moved to the right through the driving means 12. Then pin 9
The front mold 3 and the front frame 5 are rotated clockwise via the. Further, the rear mold frame 6 is driven through the driving means 10.
When the mold 18 is moved to the right, the mold 18 moves to the right on the conveying means 17 such as a walking beam type, comes into close contact with the plurality of molds 19 previously formed and conveyed, and then the driving means 10 advances. Move to the limit. A cavity 20 and a spout 21 for injecting the molten metal into the cavity 20 are formed between the molds 18 and 19 that are in close contact with each other as described above.

FIG. 3 shows a system configuration diagram for implementing the present invention. 22 is a mold making machine, which molds the mold 19 as described above. In the mold making machine 22, an encoder 23 and a sensor 24, which are mold thickness measuring means for measuring the horizontal thickness of the mold 18 extruded in the horizontal direction.
a and the sensor 24b are provided. The encoder 23 is the mold 18
The driving means 10 such as a cylinder for pushing out in the horizontal direction is provided at an appropriate position, and the stroke of the driving means 10 is detected. The sensor 24a and the sensor 24b are arranged in the vicinity of the mold 18 in a horizontal straight line direction at a constant distance L, and detect the passage of the front edge of the mold 18 pushed horizontally by the driving means 10. Reference numeral 25 is a pouring device of a fixed position type or a moving carriage type. The pouring device 25 is equipped with a ladle 26 containing molten metal adjusted for pouring in the mold 19, and pouring the molten metal into the spout 21 along the pouring line 28 while tilting the ladle 26. To do. A pouring instruction means 27 is provided in the pouring device 25. The pouring instruction means 27 is a device composed of a microcomputer and is connected to the CRT 27a and the hot water request switch 27b. Further, the pouring instruction means 27 recognizes the positions of the pouring device 25 and the mold 19 by an encoder or the like (not shown). Two types of hot water request switches 27b are provided: a switch for requesting hot water currently being poured and a switch for requesting hot water to be poured after the setup change. Reference numeral 29 denotes a planned casting product name input means for inputting a planned casting product name, which is composed of a microcomputer and is connected with a keyboard 29a and a CRT 29b. Reference numeral 30 denotes a casting schedule data registration device which is composed of a microcomputer, and inputs the data of the casting scheduled product name of the day (scheduled casting number, amount of additive to be added to the molten metal, die thickness) and the like from the keyboard 30a. Reference numeral 31 is a central control unit, which is also line information management means composed of a microcomputer, and is connected to the CRT 31a.
3, sensor 24a, sensor 24b, pouring instruction means 27,
Each of the scheduled casting product name input means 29 and the scheduled casting data registration device 30 is connected via a communication cable or a signal line. In addition, 32 is a weir folding device installed at the final end of the casting line. Reference numeral 33 is an alarm means connected to the central controller 31 and uses a satellite or the like.

Next, the operation of the present invention will be described. First, the planned casting name of the day and the planned number of casting frames are input in advance from the keyboard 29a of the planned casting name input means 29. The to-be-casted product name input means 29 displays these pieces of information on the CRT 29b and sends them to the central controller 31. The central controller 31 sends the information to the pouring instruction means 27. Further, the central control unit 31 stores the casting schedule data such as the planned casting name and the number of casting frames on the day of the casting schedule data registration device 3
Receive from 0 in advance. Further, the central controller 31 detects the horizontal thickness of the mold 18 pushed out by the encoder 23, the sensor 24a, and the sensor 24b in the horizontal direction,
The thickness of the mold 18 is transmitted to the pouring instruction means 27 and the casting line information (for example, one-frame molding, setup change signal, etc.) is received, the information of all the molds 19 on the casting line is managed, and the tracking is displayed on the CRT 31a. To do.

FIG. 4 shows a principle diagram for detecting the horizontal thickness of the mold 18 extruded in the horizontal direction. First sensor 2
4a and the sensor 24b are arranged in the vicinity of the mold 18 side by side at a constant distance L in the horizontal straight line direction. In advance, the rear mold 4 and the mold 18
The sensor 24a detects the passage of the front edge of the rear mold frame 6 which is pushed out horizontally by the driving means 10 in a state where the rear mold frame 6 is not fixed to the rear mold frame 6 (FIG. 4a). The measured value of the encoder 23 at this time is set as a measurement origin, and the measured value at this time is set to 0, for example. Next, after the rear mold 4 is fixed to the rear mold frame 6 and the mold 18 is molded, the sensor 24b detects the passage of the front edge of the mold 18 extruded in the horizontal direction via the driving means 10. The distance X by which the driving means 10 (cylinder) pushes the mold 18 horizontally is calculated from the measured value of the encoder 23 at this time. Also this mold 18
After molding, the thickness Mx of the mold 18 is calculated by the following formula, where P is the thickness of the mold 4. From L = X + P + Mx Mx = L− (X + P) (1) where L: horizontal straight line distance between the sensor 24a and the sensor 24b X: distance of the mold 18 pushed out in the horizontal direction P: rear Thickness of mold 4 Mx: Thickness of mold 18

Next, the pouring instruction means 27 is the central control unit 3.
Based on the thickness of the mold 18 received from the first example, the positional relationship between the ladle 26 mounted on the pouring device 25 and the mold 19 conveyed on the conveying device 17 in front of the ladle 26 is grasped, and CR
Tracking is displayed on T27a in real time. FIG. 4 shows a method in which the pouring instruction means 27 grasps and manages the positional relationship between the ladle 26 mounted on the pouring device 25 and the molds 19 conveyed on the conveying device 17 in front of the ladle 26.
And shown in FIG.

First, in the mold making machine 22, n-1, n, n +
The thickness of the mold 19 molded in order from the first, respectively,
_Let L _n-1 , L _n , and L _{n + 1} . Next, the sprue formed by the n−1th and nth molds 19 is defined as n, and the portion surrounded by □ in FIG. 4B is defined as the spout number n region. The area of the sprue number n is the n-th mold 1 from the distance L _n-1 / 2 from the rear edge of the n-1-th mold 19 to the front.
It is a region from the front edge of 9 to a distance of L _n / 2 rearward. In other words, the n-th cavity 20 that forms the casting by pouring the molten metal into the spout number n is present in the above area, and the ladle 26 installed in the pouring device 25 is currently used for real-time tracking display on the CRT 27a. The above area is provided as a means for grasping whether the gate is in front of the position of the gate number.

Further, the pouring instructing means 2 determines which spout number the ladle 26 mounted on the pouring device 25 is currently in front of.
FIG. 5 shows a method managed by the No. 7 system. First, pouring instruction means 27
Calculates the moving distance T of the ladle 26 mounted on the pouring device 25 from an encoder installed at an appropriate position of the pouring device 25.
The moving distance T is the distance from the trailing edge of the mold 19 (hereinafter referred to as a reference position) moved to the forward limit of the driving means 10 such as a cylinder to the ladle 26 mounted on the pouring device 25.
Subsequently, the pouring instructing means 27 calculates the first gate number whose distance from the reference position is larger than the moving distance T of the ladle 26 (in the traveling direction of the ladle 26). This calculation is shown in FIG.
The thickness of the mold 18 (mold thickness) received from the central controller 31 as shown in FIG.
, And the moving distance of each ladle 26 can be calculated by adding the received thickness of the mold 18 (mold thickness) to the moving distance from the reference position at which the gate has moved. The gate number can be calculated by comparing with T. In the example of FIG. 5, the moving distance of the gate with the gate number n is larger than the moving distance T of the ladle 26. That is, L _{n + 4} + L _{n + 3} + L _{n + 2} + L _{n + 1} + L _n
> T.

Next, the pouring instructing means 27 judges whether or not the ladle 26 mounted on the pouring device 25 exists in the area of the spout number n calculated above (the portion surrounded by □ in FIG. 5). . First, assuming that the area of the gate number n is U and the moving distance of the gate number n is N, the area U of the gate number n from the reference position is in the following range. _{N - L n / 2 <U} <N + L n-1/2 _{where: N = L n + 4 +} L n + 3 + L n + 2 + L
_n + 1 + L _n clogging N moving distance T of the ladle 26 mounted on the scope of the above pouring device 25 is present _{- L n / 2 <T <} N + L n-1/2 where: N = L _{n + 4} + L _{n + 3} + L _{n + 2} + L
_{If n + 1} + L _n , the ladle 26 is in the area of the spout number n, and the sprue number immediately before is n. If the moving distance T of the ladle 26 does not exist in the above range, the gate number n immediately before in the traveling direction is n.
Whether or not it exists in the +1 area is determined by the following formula. _{N - L n + 1/2} <T <N + L n / 2 _{where: N = L n + 4 +} L n + 3 + L n + 2 + L
_{n + 1}

Further, the pouring instructing means 27 receives graphic information (molding = 1: setup change top frame = 2, etc.), casting name, pouring material, etc. from the central control unit 31, and FIG.
Tracking is displayed in real time like. Figure 6
Is the gate number area of the pouring zone (n + 4, n + 3, ...
), The ladle 26 mounted on the pouring device 25, the name of the casting product during or during pouring, the number of frames to be cast, the number of frames to be poured, the pouring material, etc. are displayed. In addition, the mold 18
The area of each sprue number shifts to the right each time is created. Subsequently, the ladle 26 also moves and displays the graphic of the ladle to the gate number area in front of the ladle 26 whenever the area of the gate number in front of the ladle 26 changes. Further, for example, if the area of the gate number n is the top frame of the setup change, the area of the gate number n is displayed in different colors so that the pouring operator can determine the top frame of the setup change. As a result, the pouring operator can enter the name of the cast product during or during pouring and the position information of the top frame of the setup change into C.
It is possible to know the timing of the hot water request while confirming with the RT 27a.

In the present invention, the central control unit 3
Since the alarm means 33 is continued at 1, when the leading mold of the setup change on the casting line reaches the preset position,
The alarm means 33 can be activated. For example, the alarm means 33 is activated when the mold at the top of the setup change reaches 10 frames before the dam folding device 32. As a result, the operator can replace the jig of the dam folding device 32 with good timing.

[0016]

The present invention described above has the following effects. In a vertical frameless casting line, when pouring molten metal with a pouring device, the pouring operator has a tracking display means for recognizing in real time the casting name of the mold in front of the pouring device, etc. The operator can know the timing of the molten metal request while checking the name of the cast product to be poured or scheduled to be poured, and the position information of the top frame of the setup change on the CRT 27a, and the molten metal can be poured into the mold before and after the setup change. It is possible to prevent erroneous pouring when the ingredients of Iwatoyu change. In addition, the weir folding process can be changed in a timely manner. Further, it becomes possible to automate the exchange of tools of the weir folding device.

[Brief description of drawings]

FIG. 1 is a diagram showing a method of making a vertical frameless mold.

FIG. 2 is a diagram showing a method of making a vertical frameless mold in the same manner.

FIG. 3 is a diagram showing an example of a system configuration for implementing the present invention.

FIG. 4 is a diagram showing the principle of measuring the mold thickness.

FIG. 5 is a view for explaining the principle by which the pouring instruction device recognizes the mold.

FIG. 6 is a view for explaining the principle of how the pouring instruction device recognizes the mold.

FIG. 7 is a diagram showing an example of a mold tracking display.

[Explanation of symbols]

 3 Front mold 4 Rear mold 18 Vertical frameless mold 19 Vertical frameless mold 25 Pouring device 26 Ladle 27 Pouring instruction means 29 Casting product name input means 30 Casting data registration device 31 Line information management means 33 Alarm means

 ─────────────────────────────────────────────────── --- Continuation of the front page (72) Inventor Minoru Ueno 13 Kinugaoka, Moka City, Tochigi Prefecture Hitachi Metals Co., Ltd. Moka Factory

Claims (1)

[Claims] 1. A vertical frameless casting in which a molding sand is blown into a space surrounded by a front mold and a rear mold to form a mold to form a vertical frameless mold, and the mold is then pushed forward. In the line, mold thickness measuring means for measuring the thickness of the mold in the advancing direction, casting name input means for inputting the product name to be molded, thickness of each molded mold, casting information such as product name The line information management means for managing and the pouring device for pouring molten metal into the mold include the mold information from the line information managing means and the individual molds for pouring from the current position of the pouring device. In addition to the pouring instructing means for identifying the mold information, the line information management means is equipped with an alarm means for issuing an alarm when the leading mold after the setup change reaches a predetermined position on the casting line. Characteristic vertical type frameless casting Manufacturing line system.