JP6870644B2 - Release agent spraying device and release agent spraying method - Google Patents

Description

The present invention relates to a mold release agent spraying device and a mold release agent spraying method for spraying a mold release agent toward a pattern plate in a mold molding machine for molding a mold from casting sand using a casting frame and a pattern plate.

Conventionally, it has been known that in a mold molding machine, a mold release agent is sprayed on a mold molding space formed by the mold molding machine in order to prevent casting sand from adhering to the pattern plate and to maintain moldability. (See, for example, Patent Document 1).

Utility Model Registration No. 253576

When spraying the release agent, if the spray amount is not appropriate, problems such as sticking (a phenomenon in which casting sand adheres to the pattern plate) and poor die cutting occur. Therefore, it is important to control the amount of spray. However, conventionally, the amount of spray is generally adjusted visually, and there is a problem that even if the amount of spray changes due to clogging of the spray nozzle or the like, it is often not noticed. In addition, there is a problem that even if there is a release agent leak from the piping route of the device or the release agent spray, it may not be noticed.

Therefore, the present invention detects leakage of the release agent, clogging of the release agent spray nozzle, or a malfunction of the equipment of the release agent spray device, and appropriately manages the spray amount of the release agent. An object of the present invention is to provide a mold release agent spraying device and a mold release agent spraying method capable of preventing the occurrence of stagnation and mold release failure.

In order to solve the above problems, the release agent spraying device according to the first aspect of the present invention uses a casting frame 10 and a pattern plate 20 to mold a mold from the casting sand S, for example, as shown in FIGS. 1 and 2. In the mold molding machine for molding, a mold release agent spraying device 1 for spraying a mold release agent A toward the pattern plate 20, and a mold release agent spray nozzle 30 for spraying the mold release agent A toward the pattern plate 20. From the release agent supply pipe 40 that supplies the release agent A to the release agent spray nozzle 30, the flow sensor 42 that measures the flow rate of the release agent A flowing through the release agent supply pipe 40, and the measured flow rate. , A controller 90 for detecting leakage of the release agent A, clogging of the release agent spray nozzle 30, or a malfunction of the device of the release agent spray device 1.

With this configuration, a flow sensor that measures the flow rate of the release agent flowing through the release agent supply pipe that supplies the release agent to the release agent spray nozzle, and the release and release of the release agent from the measured flow rate. Since it is equipped with a controller that detects clogging of the mold release agent spray nozzle or malfunction of the equipment of the mold release agent spray device, leakage of the mold release agent and clogging of the mold release agent spray nozzle are based on the flow rate of the mold release agent. Alternatively, a malfunction of the release agent spraying device can be detected, and the amount of the release agent sprayed can be appropriately controlled.

Further, the mold release agent spraying device according to the second aspect of the present invention supplies gas G1 for spraying the mold release agent A to the mold release agent spray nozzle 30, for example, as shown in FIG. A pipe 32 and a pressure sensor 34 for measuring the pressure of the gas G1 flowing through the gas supply pipe 32 are further provided, and the controller 90 leaks the gas G1 and clogs the release agent spray nozzle 30 from the measured pressure. Alternatively, a malfunction of the device of the release agent spraying device 1 is detected. With this configuration, a pressure sensor that measures the pressure of the gas flowing through the gas supply pipe that supplies the gas for spraying the release agent, gas leakage from the measured pressure, and the eyes of the release agent spray nozzle. Since it is equipped with a controller that detects clogging or malfunction of the equipment of the mold release agent sprayer, gas leakage, clogging of the mold release agent spray nozzle, or equipment of the mold release agent sprayer is based on the gas pressure. The defect can be detected and the spray amount of the release agent can be controlled appropriately.

Further, in the release agent spraying device according to the third aspect of the present invention, for example, as shown in FIG. 2, the release agent tank 44 for storing the release agent A and the release agent tank A are filled with pressurized air. A pressurized air supply device 49 that supplies G2 and supplies the release agent A to the release agent spray nozzle 30 through the release agent supply pipe 40 is further provided. With this configuration, pressurized air is supplied to the release agent tank for storing the release agent and the release agent tank, and the release agent is supplied to the release agent spray nozzle through the release agent supply pipe. Since the air supply device is further provided, the release agent can be reliably supplied to the release agent spray nozzle by the pressurized air.

Further, in the release agent spraying device according to the fourth aspect of the present invention, the controller 90 adjusts the time for spraying the release agent A from the release agent spray nozzle 30 based on the measured flow rate. With this configuration, the controller adjusts the time during which the release agent is sprayed from the release agent spray nozzle based on the measured flow rate, so that the amount of the release agent sprayed can be appropriately controlled.

Further, the mold release agent spraying device according to the fifth aspect of the present invention is, for example, as shown in FIG. 4, a laser sensor for detecting that the mold release agent A is sprayed from the mold release agent spray nozzle 30. 60 is further provided. With this configuration, a laser sensor for detecting that the release agent is sprayed from the release agent spray nozzle is further provided, so that it can be confirmed that the release agent is properly sprayed.

In order to solve the above problems, the mold release agent spraying method according to the sixth aspect of the present invention uses the casting frame 10 and the pattern plate 20 as shown in, for example, FIGS. 1, 2 and 3, and the casting sand S. A mold release agent spraying method for spraying a mold release agent A from a mold release agent spray nozzle 30 toward a pattern plate 20 in a mold molding machine for molding a mold from a mold, wherein the mold release agent A is sprayed onto the mold release agent spray nozzle 30. The step S10 for supplying the release agent A, the step S50 for spraying the release agent A from the release agent spray nozzle 30 toward the pattern plate 20, and the step S20 for measuring the flow rate at which the release agent A is supplied were measured. Steps of detecting leakage of mold release agent A, clogging of mold release agent spray nozzle 30, or malfunction of equipment for spraying mold release agent A from the flow rate S202, S204, S206, S220, S222, S224, It includes S242.

With this configuration, the flow rate at which the release agent sprayed from the release agent spray nozzle toward the pattern plate 20 is supplied is measured, and from the measured flow rate, the release agent leaks and the release agent spray nozzle Since it is provided with a step of detecting clogging or a malfunction of the device for spraying the release agent, the amount of the release agent sprayed can be appropriately controlled.

Further, in the mold release agent spraying method according to the seventh aspect of the present invention, for example, as shown in FIGS. 2 and 3, a gas G1 for spraying the mold release agent A is supplied to the mold release agent spray nozzle 30. Step S30, step S40 for measuring the pressure of gas G1, and steps S100, S120, S130 for detecting leakage of gas G1, clogging of the release agent spray nozzle 30, or equipment malfunction from the measured pressure. And. With this configuration, the pressure of the gas flowing through the gas supply pipe that supplies the gas for spraying the release agent is measured, and from the measured pressure, gas leaks, the release agent spray nozzle is clogged, or , Since the malfunction of the device of the release agent spraying device is detected, the spray amount of the release agent can be appropriately controlled.

Further, in the release agent spraying method according to the eighth aspect of the present invention, for example, as shown in FIG. 3, the time during which the release agent A is sprayed from the release agent spray nozzle 30 based on the measured flow rate. The step S300 for adjusting the above is further provided. With such a configuration, since the step of adjusting the time for spraying the release agent from the release agent spray nozzle based on the measured flow rate is provided, the spray amount of the release agent can be appropriately controlled.

Further, in the release agent spraying method according to the ninth aspect of the present invention, for example, as shown in FIG. 4, in the spraying step S50, the release agent spray nozzle 30 is moved from the release agent spray nozzle 30. The release agent A is sprayed toward the pattern plate 20. With this configuration, the release agent is sprayed toward the pattern plate while moving the release agent spray nozzle, so that the release agent can be sprayed over a wide range of the pattern plate.

According to the present invention, based on the flow rate of the release agent, leakage of the release agent, clogging of the release agent spray nozzle, or a malfunction of the equipment of the release agent sprayer can be detected, and the amount of the release agent sprayed. By properly managing the above, it is possible to prevent the occurrence of clinging and defective mold release.

FIG. 1 is a side sectional view showing a main part of an example of a molding machine equipped with a mold release agent spraying device. FIG. 2 is a block diagram of an embodiment for supplying a release agent of a release agent spraying device and a gas for spraying the release agent. FIG. 3 shows a release agent or gas leak, a clogging of a release agent spray nozzle, or a device of a release agent sprayer, based on the flow rate of the release agent and the pressure of the gas for spraying the release agent. It is a flow chart of an example of the method of detecting a defect of. It should be noted that one flow chart is divided into two sheets (a) and (b). FIG. 4 shows, as a modification of the mold molding machine shown in FIG. 1, a mold provided with a laser sensor that sprays a mold release agent while moving a mold release agent spray nozzle and detects that the mold release agent is sprayed. It is a side sectional view which shows the main part of a molding machine.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In each figure, devices that are the same as or correspond to each other are designated by the same reference numerals, and duplicate description will be omitted. With reference to FIG. 1, a casting frame 10, a pattern plate 20, and the like for molding a mold of a mold molding machine will be described. FIG. 1 is a side sectional view of a main part of a molding machine including a casting frame 10, a filling frame 12, a frame-shaped frame 16, a pattern plate 20, a pattern carrier 22, a squeeze member 54, a casting sand hopper 50, and the like. In this document, the pattern plate 20 also includes a match plate for molding the upper and lower molds at the same time. Then, in the following description, a mold molding machine for manufacturing a mold with a casting frame will be described as an example, but the present invention can be similarly used for a frame drawing machine.

In the molding machine, the pattern plate 20 is placed on the pattern carrier 22. The casting frame 10 and the filling frame 12 are sequentially stacked on the frame-shaped frame 16 that surrounds the outer periphery of the pattern plate 20. The frame-shaped frame 16 is moved up and down by a lifting cylinder (not shown) via a guide pin 18 inserted into a hole formed in the pattern carrier 22. The squeeze member 54 is inserted into the filling frame 12 from above. The space surrounded by the pattern plate 20, the frame-shaped frame 16, the casting frame 10, the filling frame 12, and the squeeze member 54 is the molding space.

The cast sand hopper 50 is arranged on the upper part of the filling frame 12. Molding sand hopper 50, the molding sand S is stored, through sand-nozzles 52 provided in the lower, supplying molding sand S in the molding space. The casting sand S is supplied to the casting sand hopper 50 via a sand supply chute 56 provided at the upper part.

When the molding space is filled with the casting sand S, the casting sand hopper 50 and the squeeze member 54 are lowered, and the casting sand S is squeezed with the pattern plate 20 in the internal space of the casting frame 10 to form a mold (not shown). ) Is molded. At that time, as the frame-shaped frame 16 is lowered, the casting sand S is squeezed from the pattern plate 20 side as well, and the mold is uniformly squeezed. After that, the cast sand hopper 50 and the squeeze member 54 rise, the mold and the squeeze member 54 are separated, and the filling frame 12 also rises. Further, after the frame-shaped frame 16 is raised and the mold and the pattern plate 20 are separated, the casting frame 10 is further raised. The molded mold is sent to the next step while being held in the casting frame 10.

In order to facilitate the separation of the mold and the pattern plate 20, the mold release agent A is sprayed onto the pattern plate 20 in the state shown in FIG. The release agent A may be a commercially available release agent such as oil-based or water-soluble. In the present embodiment, a slit 14 penetrating the filling frame 12 is formed, a mold release agent spray nozzle 30 is inserted into the slit 14, and the mold release agent A is sprayed from the mold release agent spray nozzle 30 into the molding space. Since the mold release agent A is sprayed into the molding space surrounded by the pattern plate 20, the frame-shaped frame 16, the casting frame 10, the filling frame 12, and the squeeze member 54, it is prevented from being scattered in the atmosphere and is environmentally friendly. It is also economically favorable. Further, since the mold release agent spray nozzle 30 is installed on the filling frame 12, it does not hinder the molding of the mold, that is, when the casting sand S is squeezed by the squeeze member 54. In the figure, the release agent spray nozzle 30 is installed horizontally, but it may be inclined downward toward the pattern plate 20. The place where the release agent spray nozzle 30 is installed is not limited to the above, and may be any place such as a squeeze member 54 where the release agent A can be sprayed on the pattern plate 20.

FIG. 2 shows an example of a block diagram of the release agent spraying device 1 that sprays the release agent A from the release agent spray nozzle 30. Release agent spray device 1, in addition to the release agent spray nozzle 30, a release agent tank 44 which savings built a release agent A, a controller 90 for controlling the spraying of release agent A. Further, the release agent spraying device 1 separates the release agent supply pipe 40 that supplies the release agent A from the release agent tank 44 to the release agent spray nozzle 30, and the gas G1 for spraying the release agent A. It has a gas supply pipe 32 that supplies the mold agent spray nozzle 30. Also includes a release agent supplying pressurized air pipe 46 for supplying pressurized air G2 to the release agent tank 44 for supplying the release agent A in the release agent spray nozzle 30 from the release agent tank 44. Thus, since supply a release agent A at a pressure by supplying pressurized air G2 to release agent tank 44 to the release agent spray nozzle 30, reliably, i.e. at a constant flow rate, releasing the release agent A It can be supplied to the mold release nozzle 30. However, to provide a release agent A in the release agent spray nozzle 30 from the release agent tank 44 may be a means other than the pressure of the pressurized air G2, for example, be a gravity flow, a pump May be good. The gas G1 for spraying the release agent A from the release agent spray nozzle 30 may be air, and the release agent A is supplied from the release agent tank 44 to the release agent spray nozzle 30. pressurized air G2 is a gas other than air, it may be an inert gas such as nitrogen or the like. These gases G1 or pressurized air G2 is sent from the gas supply source or pressurized air source (not shown).

The release agent supply pipe 40 is provided with a flow rate sensor 42 that measures the flow rate of the release agent A supplied to the release agent spray nozzle 30. A pressure sensor 34 for measuring the pressure of the gas G1 supplied to the release agent spray nozzle 30 is installed in the gas supply pipe 32. The release agent supply for pressurized air pipe 46, a pressure sensor 48 for measuring the pressure of the pressurized air G2 for supplying a release agent A from the release agent tank 44 to the release agent spray nozzle 30 is installed ing. Incidentally, the release agent supply for pressurized air pipe 46, the pressure sensor 48 and pressurized air supply source (not shown) such as to constitute a pressurized air supply device 49. Incidentally, pressurized air supply source (not shown) may be a compressor or blower, or a pressurized tank for storing the pressurized air supplied from the other equipment, it may be a cylinder or the like. Then, the measured values by the flow rate sensor 42, the pressure sensor 34, and the pressure sensor 48 are transmitted to the controller 90 via the cable 92. The flow rate sensor 42, the pressure sensor 34, the pressure sensor 48 and the controller 90 may be wirelessly connected instead of the cable 92. The controller 90, pressurized air supply apparatus 49 may control the release agent operation of the spray device 1 that includes a pressurized air supply source or the like. Further, the controller 90 may be a dedicated controller, incorporated in a personal computer, a controller of a molding machine, or a controller of another device or system, and may be used for molding. It may be located in a location remote from the aircraft.

Next, with reference to FIG. 3, a method of detecting the operation and malfunction of the release agent spraying device 1 will be described. FIG. 3 shows a leak of the release agent A or the gas G1, clogging of the release agent spray nozzle 30, or a malfunction of the equipment of the release agent spray device 1 based on the flow rate of the release agent A and the pressure of the gas G1. It is a flow chart of an example of the method of detecting. It should be noted that one flow chart is divided into two sheets (a) and (b), and the points to be connected are indicated by numbers 1 to 5 circled. First, through the pressurized air supply source (not shown) release agent supplying pressurized air pipe 46 Start, supplies pressurized air G2 to the release agent tank 44. At that time the pressure of the pressure sensor 48 at pressurized air flowing through the release agent supplying pressurized air pipe 46 G2 for release agent supplying measured, and transmits to the controller 90. Note that by pressurized air G2 is supplied to the release agent tank 44, the internal pressure of the release agent tank 44 rises, pushing the release agent A. Incidentally, not provided with the pressure sensor 48 of the release agent for supplying the pressure of pressurized air G2 may not be measured. Releasing agent tank 44, a release agent A liquid and savings built, may be discharged a release agent A by pressure air, it may be a known structure. The release agent A flows from the release agent tank 44 through the release agent supply pipe 40 to reach the release agent spray nozzle 30. So far, the step S10 for supplying the release agent A has been performed. At that time, the flow rate sensor 42 measures the flow rate of the release agent A flowing through the release agent supply pipe 40 and transmits it to the controller 90 (step S20). Further, pressurized air supply source (not shown) may be a compressor or blower, or a pressurized tank for storing the pressurized air supplied from the other equipment, it may be a cylinder or the like.

Further, the gas supply source (not shown) is activated, and the gas G1 for spraying the release agent A from the release agent spray nozzle 30 is supplied to the release agent spray nozzle 30 through the gas supply pipe 32. This is the release agent spray gas supply step S30. At that time, the pressure sensor 34 measures the pressure of the gas G1 flowing through the gas supply pipe 32 and transmits it to the controller 90 (step S40). The gas supply source may be a compressor or a blower, or may be a pressurized tank, a cylinder or the like for storing pressurized air supplied from other equipment. The gas supply source may be a common and pressurized air source (not shown). For common, and a pressure reduction valve or the like (not shown) in the release agent supply for pressurized air pipe 46, the pressure of the pressurized air G2 supplying the releasing agent tank 44, the release agent spray nozzle 30 The pressure is lower than the pressure of the gas G1 for spraying the release agent A from the water.

By supplying the release agent A at a predetermined flow rate and the gas G1 at a predetermined pressure to the release agent spray nozzle 30, the release agent A is sprayed from the release agent spray nozzle 30 toward the pattern plate 20. To. When spraying toward the pattern plate 20, the direction of the mold release agent A sprayed from the mold release agent spray nozzle 30 does not necessarily have to face the pattern plate 20, and the sprayed mold release agent A does not necessarily have to face the pattern plate 20. Should reach the pattern plate 20. For example, it may float in the molding space and then fall on the pattern plate 20.

Here, a method of detecting leakage of gas G1, clogging of the release agent spray nozzle 30, or a malfunction of the equipment of the release agent spray device 1 will be described based on the pressure of the gas G1. First, it is determined whether the pressure of the gas G1 measured by the pressure sensor 34 is within a predetermined range (step S100). The predetermined pressure range is, for example, 0.1 Mpa to 0.2 Mpa, but it differs depending on the structure of the release agent spray nozzle 30 and the properties such as the viscosity of the release agent A. If the pressure of the gas G1 is within a predetermined range, it is considered to be normal (step 110).

If the pressure of the gas G1 is smaller than a predetermined range, it is predicted that the equipment of the release agent spraying device 1 such as the gas supply source, the release agent spray nozzle 30, and the gas supply pipe 32 will malfunction. Therefore, typically, a worker investigates the defect (process S120), and based on the result, a measure for correcting the defect is performed (process S290).

If the pressure of the gas G1 is larger than a predetermined range, clogging of the release agent spray nozzle 30 is assumed (step S130). Therefore, a measure for correcting the clogging defect is performed (step S290).

Further, it is determined whether or not the release agent A is sprayed from the release agent spray nozzle 30 (step S200). It is determined whether or not the controller 90 is transmitting a command to spray. Alternatively, the worker may select on the touch panel. When spraying, it is determined whether the flow rate of the release agent A measured by the flow rate sensor 42 is equal to or higher than a predetermined flow rate (step S220). The predetermined flow rate varies depending on the size of the pattern plate 20, the properties of the release agent A, the structure of the release agent spray nozzle 30, and the like. When the release agent A is flowing at a predetermined flow rate or more, it is determined whether the flow rate is detected only at the time of the spray command (step S240). If the flow rate is detected only at the time of the spray command, it is considered to be normal (step S260).

When it is determined not to spray in step S200, it is determined whether the flow rate of the release agent A is detected by the flow rate sensor 42 (step S202). If the flow rate of the release agent A is not detected (“none” in step S202), it is considered normal (step S210). When the flow rate of the release agent A is detected, the liquid leakage portion is confirmed (step S204). For example, a worker visually inspects the release agent spraying device 1. If there is a liquid leaking part, a measure for correcting the defect of the liquid leaking part is performed (step S290). If there is no liquid leakage point, investigate the defects of the measuring equipment, the mold release agent supply pipe 40, and the like (step S206). Based on the investigation results, measures are taken to correct defects in the defective measuring instruments, the release agent supply pipe 40, and the like (step S290).

When it is determined in step S220 that the flow rate of the release agent A is less than the predetermined flow rate, the release agent spray nozzle 30 is clogged or the release agent spray device 1 is defective, for example, the release agent supply pipe 40 is opened and closed. off valve and the release agent off valve for opening and closing a supply for pressurized air pipe 46 defect that determines the presence or absence of (step S222). When it is determined that the release agent spray nozzle 30 is clogged or the release agent spray device 1 is defective, the release agent spray nozzle 30 is clogged or the release agent spray device 1 is defective. (Step S290). If it is determined that there is no clogging of the release agent spray nozzle 30 or a malfunction of the equipment of the release agent spray device 1, it is assumed that there is a malfunction of the measuring equipment, so the measuring equipment is investigated (step S224). ). Then, a measure for correcting the defect of the measuring equipment is performed (step S290).

If the flow rate of the release agent A is detected in step S240 other than when the spray is commanded, liquid leakage from the release agent spray nozzle 30 or the release agent supply pipe 40 or the like is assumed (step S242). Therefore, measures are taken to correct defects in the release agent spray nozzle 30, the release agent supply pipe 40, and the like (step S290).

When the step of correcting the defect is performed in step S290, the process of supplying the release agent A is repeated from step S10. Further, although not shown in FIG. 3, when both are judged to be normal in the judgment based on the flow rate of the release agent A and the pressure of the gas G1, that is, when the steps S110 and S210 or S260 are reached. Is repeated from step S10 for supplying the release agent A. If necessary, the spraying time of the release agent A may be adjusted (step S300).

In the step S300 for adjusting the spray time of the release agent A, the spray time is adjusted based on the flow rate of the release agent A measured by the flow rate sensor 42. That is, the amount of the release agent A sprayed on the pattern plate 20 is a value obtained by multiplying the flow rate of the release agent A by the spray time. Therefore, the spraying time is adjusted so that an appropriate amount of the release agent A is sprayed on the pattern plate 20.

The steps and the like described so far are basically performed by the controller 90. However, the process S120, the process S204, the process S206, the process 224, the process S242 and the treatment (process S290) are basically performed by the worker. However, it is not limited to these.

As described above, in the release agent spraying device 1, the release agent is determined from the flow rate of the release agent A measured by the flow rate sensor 42 or the pressure of the gas G1 for spraying the release agent measured by the pressure sensor 34. Since it is possible to detect leakage of A, leakage of gas G1, clogging of the release agent spray nozzle 30, or malfunction of the equipment (including measuring equipment) of the release agent spray device 1, the amount of the release agent sprayed is appropriate. Can be managed.

In FIG. 3, the defect is detected from the flow rate of the release agent A measured by the flow rate sensor 42 or the pressure of the gas G1 for spraying the release agent measured by the pressure sensor 34. It is also possible to make a judgment using both the flow rate of the mold A and the pressure of the gas G1, and it is also possible to detect a defect with higher reliability. For example, when the pressure of the gas G1 is normal when the release agent A is to be sprayed, but the flow rate of the release agent A is not detected, the release agent spray nozzle 30 is not clogged and the release agent A is not clogged. It is assumed that the agent supply pipe 40 or the like has a problem.

In FIG. 3, the defect is detected based on the flow rate of the release agent A measured by the flow rate sensor 42 and the pressure of the gas G1 for spraying the release agent A measured by the pressure sensor 34. The defect may be determined based only on the flow rate of the release agent A measured by the flow rate sensor 42, or the defect may be determined based only on the pressure of the gas G1. That is, the release agent spraying device 1 shown in FIG. 2 may not be provided with the flow rate sensor 42 or may not be provided with the pressure sensor 34.

An example of the mold release agent spraying device 1 further including a laser sensor 60 for detecting that the mold release agent A is sprayed will be described with reference to FIG. In the mold molding machine shown in FIG. 4, the mold release agent A is sprayed from the mold release agent spray nozzle 30 when the filling frame 12 is placed on the casting frame 10. That is, the mold release agent A is sprayed while moving the filling frame 12 downward and thus moving the mold release agent spray nozzle 30 downward. In this way, when the release agent A is sprayed while moving the release agent spray nozzle 30 downward, the release agent A is sprayed over a wider range than sprayed from one point, and the wide range of the pattern plate 20 The release agent can be sprayed uniformly.

Then, the laser sensor 60 is installed between the filling frame 12 and the casting frame 10 on the outside of the moving filling frame 12. When installed in this way, the release agent A does not easily adhere to the lens of the laser sensor 60, and even if it adheres, it is easy to remove it. The laser sensor 60 can detect that the release agent A is sprayed by reducing the amount of light received by the laser due to the sprayed release agent A. Thus, confirmed that the release agent A is properly sprayed, the higher the reliability of the release agent A is properly sprayed pattern plate 20. The laser sensor 60 has a configuration in which the pattern plate 20, the casting frame 10, and the filling frame 12 are stacked at other positions than below the squeeze member 54 and moved below the squeeze member 54 on a turntable (not shown). In the mold molding machine, the mold release agent spray nozzle 30 and the laser sensor 60 may be installed in the vicinity of the turntable. Further, the laser sensor 60 may be installed on the filling frame 12, and the installation location is not limited.

Previously, releasing agent releasing agent A is supplied to the release agent spray nozzle 30 by pressure air G2 for supplying, in the release agent spray nozzle 30, the release is supplied separately from the release agent A releasing agent a has been described as being atomized by the gas G1 for spraying agent a. However, without supplying gas G1 for spraying release agent A in the release agent spray nozzle 30, sprayed with release agent A from the release agent spray nozzle 30 by pressure air G2 release agent for supplying You may try to do it. In this case, leakage of the release agent A, clogging of the release agent spray nozzle 30, and malfunction of the equipment (including the measuring equipment) of the release agent spray device 1 are measured by the flow rate sensor 42. It is detected by the flow rate of mold A. Further, in this case, the release agent spraying device 1 may not include the gas supply pipe 32, the pressure sensor 34, and the like.

1 Release agent spraying device 10 Casting frame 12 Filling frame 14 Slit 16 Frame-shaped frame 18 Guide pin 20 Pattern plate 22 Pattern carrier 30 Release agent spray nozzle 32 Gas supply pipe 34 Pressure sensor 40 Release agent supply pipe 42 Flow sensor 44 release agent tank 46 releasing agent supplying pressurized air pipe 48 pressure sensor 49 pressurized air supply device 50 molding sand hopper 52 sand-nozzle 54 squeeze member 56 sand feed chute 60 the laser sensor 90 controller 92 cable A release agent gas G2 pressurized air S foundry sand for spraying G1 release agent

Claims (9)

A mold release agent spraying device that sprays a mold release agent toward the pattern plate in a mold molding machine that molds a mold from casting sand using a casting frame and a pattern plate.
With a mold release agent spray nozzle that sprays the mold release agent toward the pattern plate;
With the release agent supply pipe that supplies the release agent to the release agent spray nozzle;
With a flow rate sensor that measures the flow rate of the release agent flowing through the release agent supply pipe;
From the measured flow rate, the leakage of the release agent, clogging of the release agent spray nozzle, or e Bei and a controller for detecting a malfunction of the device releasing agent spray device;
When the controller sprays the release agent, it determines that there is a problem when the measured flow rate is less than a predetermined flow rate, and detects that there is a flow rate when the release agent is not sprayed. Is judged to be defective;
Release agent sprayer. With a gas supply pipe that supplies a gas for spraying the release agent to the release agent spray nozzle;
Further equipped with a pressure sensor for measuring the pressure of the gas flowing through the gas supply pipe;
From the measured pressure, the controller detects the gas leak, the clogging of the release agent spray nozzle, or the malfunction of the equipment of the release agent spray device;
The release agent spraying device according to claim 1. With a release agent tank for storing the release agent;
It further includes a pressurized air supply device that supplies pressurized air to the release agent tank and supplies the release agent to the release agent spray nozzle through the release agent supply pipe;
The release agent spraying device according to claim 1 or 2. The controller adjusts the time at which the release agent is sprayed from the release agent spray nozzle based on the measured flow rate;
The release agent spraying device according to claim 1 or 2. A laser sensor for detecting that the mold release agent is sprayed from the mold release agent spray nozzle is further provided;
The release agent spraying device according to claim 1 or 2. A mold release agent spraying method for spraying a mold release agent from a mold release agent spray nozzle toward the pattern plate in a mold molding machine that molds a mold from casting sand using a casting frame and a pattern plate.
With the step of supplying the release agent to the release agent spray nozzle;
A step of spraying the release agent from the release agent spray nozzle toward the pattern plate;
The step of measuring the flow rate at which the release agent is supplied;
From the measured flow rate, a step of detecting leakage of the release agent, clogging of the release agent spray nozzle, or a malfunction of the device for spraying the release agent is provided;
When spraying the release agent, if the measured flow rate is less than the predetermined flow rate, it is determined that there is a problem, and if it is detected that there is a flow rate when the release agent is not sprayed, there is a problem. Judge as yes;
Release agent spraying method. A step of supplying a gas for spraying the release agent to the release agent spray nozzle;
With the process of measuring the pressure of the gas;
From the measured pressure, the step of detecting the gas leakage, the clogging of the release agent spray nozzle, or the malfunction of the equipment is provided;
The release agent spraying method according to claim 6. A step of adjusting the time at which the release agent is sprayed from the release agent spray nozzle based on the measured flow rate is further provided;
The release agent spraying method according to claim 6 or 7. In the spraying step, the mold release agent is sprayed from the mold release agent spray nozzle toward the pattern plate while moving the mold release agent spray nozzle;
The release agent spraying method according to claim 6 or 7.

Images