Casting molding device

Abstract

The present invention includes: a connecting part (4) that detachably connects the injection vessel (2) and the cover member (60); and a vertical drive mechanism (3) that moves the injection vessel (2) and the cover member (60) together in the vertical direction when connected, and moves the cover member (60) in the vertical direction when not connected.

Description

Technical Field

[0001] This invention relates to a mold-forming apparatus for pressing a foamed compound into the cavity of a heated mold to shape the mold. Background Technology

[0002] In recent years, due to the good collapse properties after casting, it has been proposed to use water-soluble binders as binders for particulate aggregates, and to solidify the water-soluble binders by evaporating the water through heating, thereby shaping the mold. For example, Patent Document 1 discloses a foamed mixture of materials for making such shapes, and a mold shaping device that uses air to inject the foamed mixture into the mold cavity. Figure 9 The molding apparatus 110 shown in Patent Document 1 includes: a groove 120 formed in the bottom through which a filling hole 122 passes; a stop mechanism 118 for opening and closing the filling hole 122; and a cover member 130 for sealing one side of the opening 120K in the groove 120. Furthermore, the molding apparatus 110 includes: a stirring mechanism 112 with a stirring blade 140 provided at the lower part; and a compressed air supply mechanism 150 for supplying compressed air to the interior of the groove 120 when the foaming mixture is filled from the filling hole 122 into the mold cavity of the mold 160. Furthermore, the molding apparatus 110 includes: a hydraulic cylinder 172Y for moving the groove 120 vertically; a servo hydraulic cylinder 116Y for moving the cover member 130 vertically; and a servo hydraulic cylinder 144Y for moving the stirring blade 140 vertically. That is, the molding apparatus 110 has a dedicated drive system for each component that moves vertically.

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent Application Publication No. 2018-192512 Summary of the Invention

[0006] The problem that the invention aims to solve

[0007] Regarding the molding apparatus of Patent Document 1, each component moving in the vertical direction has a dedicated drive system, resulting in a complex apparatus configuration. Furthermore, each of these components moving in the vertical direction is individually controlled. Consequently, the cycle time from mixing to injection is relatively long. In view of the above, the molding apparatus of Patent Document 1 allows for simplification of the apparatus configuration and for shortening the cycle time from mixing to injection.

[0008] Therefore, one objective of the present invention is to realize a molding apparatus that simplifies the apparatus structure and shortens the cycle time from mixing to injection compared to the past.

[0009] Methods for solving problems

[0010] To address the aforementioned issues, one aspect of the present invention relates to a molding apparatus comprising: an injection vessel for injecting a foamed compound into a mold cavity from an injection port; a cover member for opening and closing an upper opening of the injection vessel; a vertical drive mechanism for moving the cover member vertically along the depth direction of the injection vessel; and a connecting portion for detachably connecting the injection vessel and the cover member.

[0011] The effects of the invention

[0012] According to one aspect of the present invention, a mold-making apparatus that is simpler in construction and can achieve a shorter cycle time compared to the past can be provided. Attached Figure Description

[0013] Figure 1 This is a front view of a molding apparatus according to one embodiment of the present invention.

[0014] Figure 2 for Figure 1 The arrow view cross-section of the mold forming device at the cutting line AA′ shown.

[0015] Figure 3 This is a perspective view of the injection vessel periphery of a molding apparatus according to one embodiment of the present invention.

[0016] Figure 4 for Figure 1 The diagram shows a cross-sectional view of the injection vessel surrounding the molding apparatus.

[0017] Figure 5 for Figure 4 The diagram shows a cross-sectional view of the injection vessel's perimeter, in which a connecting part is used to connect the injection vessel and the cover component, making them an integral unit.

[0018] Figure 6 To indicate Figure 1 The diagram shows a cross-sectional view of the sealing body of the mold forming device.

[0019] Figure 7 For Figure 1 The diagram schematically illustrates an example of the operation of the mold-forming device shown.

[0020] Figure 8 For Figure 1 The diagram schematically illustrates an example of the operation of the mold-forming device shown.

[0021] Figure 9 A diagram illustrating the structure of a conventional casting mold assembly.

[0022] [Explanation of reference numerals in the attached figures]

[0023] 1. Molding device

[0024] 2 injection kettles

[0025] 3. Up and down drive mechanism

[0026] 4 connecting parts

[0027] 5. Stirring mechanism

[0028] 7a stop bolt (stop bolt)

[0029] 7b bolt stop plate

[0030] 9 drive mechanism

[0031] 11 molds

[0032] 20 injection sites

[0033] 27a Opening (Upper Opening)

[0034] 28-piece jacket

[0035] 43 clamping pin

[0036] 44 Clamping Cylinder (Drive Unit)

[0037] 60 cover components Detailed Implementation

[0038] The following describes a molding apparatus according to one embodiment of the present invention. Figures 1 to 8 Please provide an explanation.

[0039] (1) Overview of the casting mold molding device 1

[0040] Figure 1 This is a front view showing the overall structure of the casting molding apparatus 1 according to this embodiment. Additionally, Figure 2 To indicate in Figure 1 The image shows a cross-sectional view of the mold-forming device 1 being cut off at the cutting line AA′ shown. Figure 3 This is a perspective view of the periphery of the injection vessel 2 within the molding apparatus 1. Additionally, Figure 4 To indicate in Figure 3The image shows a cross-sectional view of the mold-forming device 1 being cut off at the cutting line BB′. The mold-forming device 1 can be used in a process where material is pressed into the mold cavity and molded. It is particularly preferred for use in a process where a foamed compound obtained by mixing particulate aggregate, water-soluble binder, surfactant and water is used as the material for the mold and for molding the core.

[0041] The molding apparatus 1 includes an injection vessel 2, within which a stirring blade 51 is used. Figure 2 The foamed compound is generated and injected into the injection vessel 2. Additionally, the molding apparatus 1 injects the foamed compound into the injection vessel 2 by supplying air (e.g., compressed air) to the upper part of the injection vessel 2. The molding apparatus 1 also includes a cover member 60 for opening and closing the opening of the upper part of the injection vessel 2 and an injection air supply unit 65b. Figure 6 In addition, the molding device 1 is equipped with various drive systems to perform the actions from mixing to injection.

[0042] Regarding this drive system, the mold-forming apparatus 1 includes: a vertical drive mechanism 3 that moves the cover member 60 up and down along the depth direction of the injection vessel 2, and a connecting part 4 that detachably connects the injection vessel 2 and the cover member 60. Furthermore, when the injection vessel 2 and the cover member 60 are connected as one unit using the connecting part 4, the vertical drive mechanism 3 moves the injection vessel 2 and the cover member 60 together in the aforementioned vertical movement. On the other hand, when the connecting part 4 does not connect the injection vessel 2 and the cover member 60 (when the connection is detached), the vertical drive mechanism 3 does not move the injection vessel 2 up and down, but moves the cover member 60 up and down. Thus, according to the mold-forming apparatus 1, when it is necessary to move the injection vessel 2 up and down, by connecting it to the cover member 60 using the connecting part 4, the vertical drive mechanism 3 can be used to move it up and down. In other words, the mold-forming apparatus 1 is configured to move the injection vessel 2 up and down using the vertical drive mechanism 3 that moves the cover member 60 up and down, and does not have a dedicated drive mechanism for moving the injection vessel 2 up and down. Therefore, compared to previous mold-forming devices equipped with this dedicated drive mechanism, the mold-forming device 1 simplifies the configuration, resulting in a simpler structure. Furthermore, if each component requiring vertical movement has its own dedicated drive mechanism, the relative positions must be checked before movement. In this case, controlling the relative positional relationships during drive becomes complex. However, according to this embodiment, since the vertical drive mechanism 3 is shared by both the cover member 60 and the injection vessel 2 for vertical movement, the risk of interference is eliminated, and the possibility of stoppage due to conditional failure is reduced. Additionally, the cycle time can be shortened.

[0043] (2) Details of the casting mold molding device 1

[0044] Next, the details are explained. The molding device 1 includes: an injection vessel 2, a cover component 60, an upper and lower drive mechanism 3, and a connecting part 4. The molding device 1 also includes: a stirring mechanism 5, and a bolt-stopping mechanism 7. Figure 4 ), drive mechanism 9 ( Figure 1 and Figure 2 ) and mold 11 ( Figure 7 ).

[0045] The injection vessel 2 is a container used to mix various materials (molding materials) to generate a foamed compound, and is a container for holding the generated foamed compound until injection. The injection vessel 2 has: a lower side portion 21 with an injection port 20, an upper side portion 22 disposed opposite to the lower side portion 21, and a side portion 23 made of transparent material disposed between the lower side portion 21 and the upper side portion 22. The side portion 23 is cylindrical, and by sealing the opening at its lower end with the lower side portion 21, the lower side portion 21 becomes the bottom of the vessel, allowing it to hold the foamed compound internally. Figure 1 As shown, the injection vessel 2 has a plurality of support sections 24 on the outside of the side section 23, which connect the lower side section 21 to the upper side section 22.

[0046] Lower side 21 Figure 4 As shown, the device includes: a lower flange 25 with a shape that protrudes laterally from near the outer diameter of the side portion 23, and an injection plate 26 located below the lower flange 25. An opening 25a with a diameter slightly larger than the outer diameter of the side portion 23 is provided in the lower flange 25, and the lower end of the side portion 23 is fitted into this opening 25a, thereby connecting it to the side portion 23. The injection plate 26 is connected to the lower flange 25 at the bottom, with a portion of its upper part exposed towards the inner surface of the vessel. This exposed portion forms the upper surface of the bottom of the injection vessel 2. The injection port 20 is a through hole provided in the injection plate 26, for example... Figure 4 Three injection ports 20 are provided as shown. The number of injection ports 20 is not limited to this. A valve structure can be provided at each injection port 20 to prevent leakage of the foamed compound. The valve structure can be, for example, a known valve structure made of rubber.

[0047] The lower portion 21 is a two-piece structure, or a structure that ensures a certain thickness, which helps to improve the rigidity of the injection vessel 2. The lower flange 25 and the injection plate 26 are preferably made of a material that is alkali-resistant and easily peels off from the mixed sand, for example, a metal such as stainless steel, or a fluoropolymer such as PTFE. Using metal to construct them further improves rigidity. The lower flange 25 and the injection plate 26 can be made of the same material or different materials.

[0048] Upper side 22 Figure 3 and Figure 4As shown, the upper flange 27 has a shape that protrudes laterally from near the outer diameter of the side portion 23. In the upper flange 27, as... Figure 4 As shown, an upper opening with a diameter slightly larger than the outer diameter of the side portion 23 is provided, and the upper end of the side portion 23 fits into this opening 27a, thereby connecting it to the side portion 23. The upper flange 27 can be made of a metal such as stainless steel, or a fluoropolymer such as PTFE. However, it is not limited to these. The upper flange 27, by having a certain thickness, contributes to the improvement of the rigidity of the injection vessel 2. If it is further made of metal, the rigidity can be further improved.

[0049] The upper part 22 also has a sleeve 28 that connects to the upper part of the upper flange 27. The sleeve 28 is provided at two locations opposite to the central axis of the injection vessel 2, and each of them has a hole 28a for inserting the clamping pin 43 (described later). The sleeve 28 and the clamping pin 43 (described later) together form the connecting part 4. The sleeve 28 may be made of the same material as the upper flange 27, or it may be made of a different material.

[0050] 24 pillars Figure 3 As shown, it is connected to the lower side portion 21 and the upper side portion 22. The support portion 24 is preferably also made of metal, just like the lower side portion 21 and the upper side portion 22. Therefore, the support portion 24, together with the lower side portion 21 and the upper side portion 22, can contribute to improving the rigidity of the injection vessel 2. Furthermore, the support portions 24 maintain the spacing between the lower side portion 21 and the upper side portion 22 at a predetermined distance. In this embodiment, a total of four support portions 24 are provided at equal intervals along the outer periphery of the side portion 23. However, the number of support portions 24 is not limited to four.

[0051] The side portion 23 is fixed to the lower side portion 21 and the upper side portion 22, forming the side portion of the vessel for containing the foamed compound. The side portion 23 is made of a transparent material. This allows for a good observation of the interior of the injection vessel 2. By observing, it is possible to confirm the changes and volume of the compounding sand, as well as the presence or absence of any adhering substances that should be removed during cleaning of the injection vessel 2 and the presence or absence of any residue of such adhering substances after cleaning. Furthermore, it is also possible to confirm whether a sealing body 61 (e.g., an air-filled seal) described later has been used. As the transparent material, a transparent thermoplastic resin (so-called plastic) can be used, preferably selected from rigid plastics such as acrylic resins, polycarbonate, vinyl chloride, and polystyrene.

[0052] The side portion 23 only needs to be strong enough to withstand the weight of the foamed compound and the pressure during filling. The rigidity of the injection vessel 2 can be ensured by the lower side portion 21, the upper side portion 22 and the support portion 24, so the thickness of the side portion 23 can be relatively thin in terms of withstanding internal pressure.

[0053] The cover member 60 has a circumferential surface 60a opposite to the inner circumferential surface of the opening on one side of the upper part 22 of the injection vessel 2, and a sealing body 61 is provided on the circumferential surface 60a.

[0054] The sealing body 61 is deformable in a radial direction from the center of the cover member 60 toward the circumferential surface 60a. If the sealing body 61 is deformed radially, the front end of the sealing body 61 is sealed against the inner circumferential surface of the injection vessel 2, thus sealing the opening at the top of the injection vessel 2. In other words, before the sealing body 61 is deformed, a gap exists between the sealing body 61 and the inner circumferential surface of the injection vessel 2. The deformation of the sealing body 61 is achieved by pressurizing the air supplied by the sealing air supply unit 65a, which provides a hollow portion within the sealing body 61. If the cover member 60 closes the opening at the top of the injection vessel 2, sealing the sealing body 61 against the inner circumferential surface of the injection vessel 2, the injection vessel 2 is sealed. In this state, if air is pressurized into the injection vessel 2 using the injection air supply unit 65b, the foamed compound inside the injection vessel 2 is compressed by the compressed air and injected from the injection port 20. If the supply of air to the hollow portion inside the sealing body 61 is stopped, the sealing part 61a returns to its original state (the state before expansion) and separates from the inner circumferential surface of the injection vessel 2. The sealing body 61 also deforms (expands) during mixing, sealing the injection vessel 2 and suppressing the shaking of the injection vessel 2 caused by mixing. It should be noted that the configuration of the cover member 60 is not limited to the above configuration, as long as it is a configuration that can close the opening at the top of the injection vessel 2.

[0055] In the cover member 60, such as Figure 4 As shown, a stirring shaft insertion hole 64 is provided, through which a bearing 68 is inserted for the stirring shaft 53, which has stirring blades 51 at its lower end. The up-and-down movement of the cover member 60 and the up-and-down movement of the stirring shaft 53 and stirring blades 51 are achieved by the up-and-down drive mechanism 3. Figure 2 It drives and controls the system as a whole.

[0056] The sealing air supply unit 65a supplies air to the hollow portion of the sealing body 61. Specifically, the sealing air supply unit 65a is connected to the other end of the flow path 62 provided inside the cover member 60. During the process of injecting the foamed compound in the injection vessel 2 from the injection port 20, air is supplied to the hollow portion to deform the sealing body 61. As a result, the opening at the top of the injection vessel 2 is blocked, and the interior of the injection vessel 2 is sealed.

[0057] Regarding the air supply to the sealing body 61, the sealing air supply unit 65a includes a valve (not shown) and a pressure gauge in the cover member 60. A compressed air supply device is connected to the valve via a hose, a flow meter, and a three-way valve. This compressed air supply device enables the supply of compressed air to the sealing body 61 via the flow meter, three-way valve, hose, and valve. The pressure gauge measures the pressure in the hollow portion of the sealing body 61.

[0058] In addition, the sealing air supply unit 65a includes an air supply control unit that is connected to a pressure gauge, a flow meter, a three-way valve, and a compressed air supply device. The air supply control unit controls the operation of the compressed air supply device and the three-way valve, and performs the supply and cessation of air to the sealing body 61.

[0059] The injection air supply unit 65b supplies air to the injection vessel 2. Specifically, the injection air supply unit 65b is as follows: Figure 6 As shown, the air supply unit 65b connects to the inlet pipe 67 provided on the cover member 60, through which air can be supplied to the injection vessel 2. The injection air supply unit 65b supplies air to the injection vessel 2 when the injection port 20 of the injection vessel 2 is open by the stop mechanism 7 (described later). At this time, the sealing air supply unit 65a supplies air to the sealing body 61, causing the sealing body 61 to expand. The expanded sealing body 61 then seals the injection vessel 2. By supplying air to the injection vessel 2 through the injection air supply unit 65b in this state, the foamed compound in the injection vessel 2 is injected through the injection port 20. The timing of air supply by the sealing air supply unit 65a and the injection air supply unit 65b is different. Furthermore, the sealing air supply unit 65a supplies air at a higher pressure than the injection air supply unit 65b.

[0060] The injection air supply unit 65b includes a valve (not shown) and a pressure gauge in the cover member 60. A compressed air supply device is connected to the valve via a hose, a flow meter, and a three-way valve. This compressed air supply device enables the supply of compressed air to the injection vessel 2 via the flow meter, three-way valve, hose, and valve. The pressure gauge measures the pressure inside the injection vessel 2.

[0061] In addition, the injection air supply unit 65b includes an air supply control unit connected to a pressure gauge, a flow meter, a three-way valve, and a compressed air supply device. The air supply control unit controls the operation of the compressed air supply device and the three-way valve.

[0062] The up-and-down drive mechanism 3 is a mechanism that moves the cover member 60 up and down along the depth direction of the injection vessel 2. The up-and-down drive mechanism 3 enables the injection vessel 2 to move up and down as needed, together with the cover member 60. Furthermore, the up-and-down drive mechanism 3 causes the cover member 60 and the stirring mechanism 5 to move up and down together frequently.

[0063] The up-and-down drive mechanism 3 includes a cylinder 30a and a rod 30b arranged axially in the up-and-down direction of the device, and an electric servo motor (not shown) for up-and-down drive. The lower end of the rod 30b is connected to the cover member 60 and the stirring mechanism 5. Thus, by operating the electric servo motor, the cover member 60 and the stirring mechanism 5 are configured to move integrally in the direction close to the bottom of the injection vessel 2 and in the opposite direction, in other words, in the up-and-down direction of the device. The electric servo motor is connected to the up-and-down motion control unit (not shown).

[0064] The connecting part 4 has a vessel clamping mechanism 40 that connects and disconnects the upper and lower drive mechanism 3, the cover member 60, and the stirring mechanism 5 to the injection vessel 2. The connection is achieved by inserting the clamping pin 43 of the vessel clamping mechanism 40 into the hole 28a of the sleeve 28, which connects to the upper flange 27 of the upper side portion 22 of the injection vessel 2. Therefore, the connecting part 4 is constituted by the vessel clamping mechanism 40 and the sleeve 28. The upper part of the connecting part 4 connects and fixes the lower end of the rod 30b of the upper and lower drive mechanism 3, and a plate-shaped member 4a is provided at the lower part of the connecting part 4, to which the cover member 60 is connected and fixed. The plate-shaped member 4a is as follows: Figure 3 and Figure 4 As shown, two locations opposite the stirring shaft 53 of the clamping stirring mechanism 5 are respectively connected to the vessel clamping mechanism 40. Additionally, the connecting part 4 has a vessel upper and lower cable tray 46. Figure 2 ).

[0065] 40-inch vessel clamping mechanism Figure 4 As shown, it includes: a clamping cylinder 44 (drive unit) with a rod 41, a clamping base 42, and a clamping pin 43. The vessel clamping mechanism 40 is connected to a plate-shaped member 4a fixed to the cover member 60, and the rod 41 ( Figure 4 The rod 41 is supported by a plate-shaped member 4a. A clamping base 42 is connected to the top of the rod 41, and a clamping pin 43, which is supported by the plate-shaped member 4a, is provided on the clamping base 42. There are two clamping bases 42, and two clamping pins 43 are arranged in parallel on each base.

[0066] The protruding ends of each clamping pin 43 are inserted into the holes 28a of the sleeve 28 that connect to the upper flange 27 of the upper side 22 of the injection vessel 2. Corresponding to the vessel clamping mechanism 40, the sleeve 28 is provided with two holes 28a at two locations along the circumference of the upper flange 27.

[0067] The clamping cylinder 44 can move the clamping base 42 via the rod 41. This causes the clamping pin 43, protruding from the clamping base 42, to advance or retract in the protruding direction, thereby achieving insertion into the hole 28a and release of that insertion (removal from the hole 28a). The clamping cylinder 44, according to the clamping control unit (not shown), inserts the clamping pin 43 into the hole 28a or releases the insertion. The state of the clamping pin 43 inserted into the hole 28a is shown below. Figure 5 In China. Through, as... Figure 5 As shown, the clamping pin 43 is inserted into the hole 28a, thereby connecting the injection vessel 2 and the cover member 60. Thus, the cover member 60 moves up and down via the up-and-down drive mechanism 3, and the injection vessel 2 also moves up and down simultaneously.

[0068] Figure 2 One end of the upper and lower cable brackets 46 shown in the diagram is connected and fixed to the device frame F. Figure 2 One end is connected and fixed to the connecting part 4, which will guide the cable support arranged in the molding device 1. The upper and lower cable racks 46 of the reactor move up and down with the action of the connecting part 4 through the upper and lower drive mechanism 3, so that the length in the vertical direction can be extended or retracted.

[0069] The mixing mechanism 5 mixes the various materials supplied to the injection vessel 2. The mixing mechanism 5, as shown... Figure 4 As shown, the apparatus includes: a stirring blade 51, a stirring shaft 53, and a stirring motor 55. The stirring shaft 53 is arranged vertically. The stirring blade 51 is located at the lower end of the stirring shaft 53. The stirring motor 55 is connected to the stirring shaft 53. The stirring blade 51 is rotated by the driving of the stirring motor 55. The stirring mechanism 5 uses the stirring blade 51 to mix various materials in the injection vessel 2. The various materials (particulate aggregate, water-soluble binder, surfactant, and water) are fed into the injection vessel 2, for example, by a material supply unit 8 equipped with various supply mechanisms.

[0070] Examples of such materials include, for example, artificial sand (e.g., Espal) as particulate aggregate, sodium silicate as a water-soluble binder, anionic surfactants as surfactants, and water. However, the invention is not limited to these examples and may include other additives.

[0071] Bolt-stopping mechanism 7 Figure 4 As shown, a stopper 7a is provided for blocking the injection port 20 on the lower side 21 of the injection vessel 2. The stopper 7a protrudes upward from the horizontally arranged stopper plate 7b. Furthermore, the stopper mechanism 7, via a mechanism not shown, [is used to prevent blockage]. Figure 2 The paper moves horizontally to the left and right.

[0072] The bolt-stopping mechanism 7 also includes: a support portion 7d that supports the bolt-stopping plate 7b. Figure 1 The support portion 7d is relative to the device frame F ( Figure 2 The drive mechanism 9 is movably connected to the support.

[0073] Drive mechanism 9 is used to keep bolt-stopping mechanism 7 in the horizontal direction ( Figure 2 The drive mechanism that moves in the left-right direction on the paper surface has: a support portion 7d of the support bolt mechanism 7 and a support guide portion 91 ( Figure 1 The drive mechanism 9, along with the guide rod 92 of the cylinder for the stop mechanism (not shown), moves the position of the stop plate 7b of the stop mechanism 7 horizontally by operating the cylinder for the stop mechanism. Specifically, it moves the stop 7a between a position directly below the injection port 20 of the injection vessel 2 (first position) and a position offset from directly below the injection port 20 of the injection vessel 2 (second position, which may be outside the device). The position offset from directly below the injection port 20 of the injection vessel 2 corresponds to a position that does not obstruct injection during the process of injecting the foamed compound into the mold 11 from the injection port 20 of the injection vessel 2.

[0074] Furthermore, the drive mechanism 9 can place the injection vessel 2, which is not yet connected to the cover member 60 via the connecting part 4, on the stop plate 7b, and move it horizontally. The injection vessel 2, not yet connected to the cover member 60, is in a state where the stop 7a is engaged with the injection port 20. Therefore, the injection vessel 2 can be stably mounted on the stop plate 7b, and in this state, it can be moved from a position directly below the cover member 60 and the stirring mechanism 5, etc. Thus, for example, it can be moved outside the device for maintenance work such as cleaning the injection vessel 2. Conventionally, dedicated drive mechanisms are included for moving the injection vessel horizontally, while the molding apparatus 1 uses a drive mechanism 7a that moves the stop plate 7b... Figure 2 The drive mechanism, which moves the paper surface left and right, causes the injection vessel 2 to move horizontally. Therefore, compared to the past, the molding device 1 has a simplified structure, allowing for a more streamlined design. Furthermore, for applications requiring… Figure 2 If each component moving horizontally on the paper has its own dedicated drive mechanism, controlling the relative positions of the components during the drive becomes complex. However, in this embodiment, the drive mechanism 9 is shared by both the stop mechanism 7 and the injection vessel 2 for horizontal movement, thus simplifying control. Furthermore, conventionally, during maintenance, the heavy injection vessel must be removed from the molding device within a limited space, resulting in poor workability and making cleaning the injection vessel very difficult. However, with the above configuration, maintenance of the injection vessel can be performed more easily than before.

[0075] Mold 11 Figure 7As shown in (iii), a mold is provided on the lower side of the mold forming device 1 for shaping the foamed compound mixed by the mixing mechanism 5 into a predetermined shape to form a mold. A filling hole 11a is formed through the mold 11 and is arranged adjacent to the injection port 20 of the injection vessel 2. In addition, the mold forming device 1 also includes a mold extrusion mechanism (not shown) for removing the mold from the mold 11 by opening the mold 11.

[0076] (4) Casting molding action using casting molding device 1

[0077] The operation of the molding device 1 will be explained below. The explanation will begin with the state in which the foamed compound is contained within it. Figure 7 and Figure 8 The illustration of the foamed compound is omitted in the text.

[0078] first, Figure 7 (i) indicates the state where the foamed compound is contained and the cover member 60 closes the opening at the top of the injection vessel 2. The clamping pin 43 is inserted into the hole 28a of the jacket 28, and the cover member 60 is connected to the injection vessel 2. The sealing body 61 provided on the cover member 60 has not yet sealed the opening at the top of the injection vessel 2. In addition, the stop plug 7a blocks the injection port 20.

[0079] Next, remove the stop plug 7a that was blocking the injection port 20. From Figure 7 (i) In the connected state, the cover member 60 rises with the injection vessel 2, thereby pulling the stop plug 7a out from the injection port 20. This state is shown in Figure 7 (ii). In Figure 7 In state (ii), the stop valve mechanism 7 can be moved horizontally and retracted from directly below the injection vessel 2.

[0080] Next, an injection process is performed where the foamed compound is injected into the injection vessel 2, which is open from the injection port 20. Figure 7 In state (ii), the stop plug 7a is moved horizontally, causing the injection vessel 2 to descend so that it is positioned on the mold 11, and the injection port 20 of the injection vessel 2 is positioned adjacent to the filled hole 11a of the mold 11. This state is shown in Figure 7 (iii) In the injection process, air is supplied to the injection vessel 2 from the injection air supply unit 65b. The foamed compound in the injection vessel 2 is filled into the mold cavity of the mold 11 through the injection port 20. The mold 11 is heated by a heating method not shown, and the foamed compound filled into the mold cavity is heated and cured.

[0081] Furthermore, before injection, it is determined whether the sealing body 61 properly seals the inner circumferential surface of the injection vessel 2, that is, whether it can seal the opening of the injection vessel 2. Specifically, the pressure of the air supplied from the sealing air supply unit 65a to the sealing body 61 is measured, and the determination is made based on whether the measured value is above a threshold. If the measured value is above the threshold, it means that the sealing body 61 properly seals the inner circumferential surface of the injection vessel 2. On the other hand, if the measured value is below the threshold, it means that there is a possibility of air leakage from the sealing body 61. If the state of being below the threshold continues from the start of supply until a predetermined time has elapsed, an error is displayed. In this case, maintenance such as inspection and replacement of the sealing body 61 is performed.

[0082] If the injection process is complete, then from Figure 7 In state (iii), the injection vessel 2, the cover component 60, and the stirring mechanism 5 are raised together towards the zenith to the stop-operation position. Then, the stop-operation mechanism 7 moves directly below the injection vessel 2, becoming as follows: Figure 7 As shown in (ii), the injection vessel 2, the cover member 60, and the stirring mechanism 5 are lowered, and the stop plug 7a is inserted into the injection port 20, becoming Figure 7 As shown in (i). In becoming Figure 7 At the moment shown in (i), the clamping pin 43 is removed from the hole 28a of the jacket 28, and the connection between the injection vessel 2 and the cover member 60 and the stirring mechanism 5 is released. During this time, the mold 11 is moved from directly below the injection vessel 2. Thus, a series of actions involved in the injection are completed. It should be noted that during the pressing process, while the mold 11 is heated to heat-solidify the foamed compound, the injection vessel 2, the cover member 60, and the stirring mechanism 5 can be integrally raised towards the zenith to the stop travel position.

[0083] Next, with the injection vessel 2 placed under the stop plate 7b, the cover member 60 and the stirring mechanism 5 rise to the material feeding position. This state is shown below. Figure 7 In step (iv), in this state, a material feeding process is performed to add particulate aggregate, water-soluble binder, surfactant, and water into the injection vessel 2. Feeding is carried out via a material supply unit (not shown) through a feeding port or an opening at the top of the injection vessel 2. After material feeding, the weight of the injection vessel 2 containing the material is measured to manage the amount of material fed. Measurement can be performed using a measuring device mounted on the stop mechanism 7. During this stage, since neither the cover member 60 nor the stirring blades 51 are in contact with the injection vessel 2, the weight of the injection vessel 2 containing the material can be accurately measured.

[0084] Next, the cover member 60 and the stirring mechanism 5 are lowered toward the injection vessel 2 to perform a mixing process. During the mixing process, the cover member 60 and the stirring mechanism 5 are positioned below the height at which the clamping pin 43 is inserted into the hole 28a of the jacket 28 relative to the injection vessel 2. This state is shown below. Figure 7 In (v). In other words, in Figure 7 In the mixed state of (v), located Figure 7 The original position of (i), compared with the state during the clamping action, is the position of the stirring blade 51 on the lower side, that is, the position close to the bottom of the vessel.

[0085] Secondly, if mixing is complete, raise the cover member 60 and the stirring mechanism 5 until the clamping pin 43 is at the same height as the hole 28a of the jacket 28, and insert the clamping pin 43 into the hole 28a of the jacket 28. This state is... Figure 7 The state shown in (i).

[0086] The molding device 1 takes the above-mentioned injection, material input, metering, and mixing as a working cycle and can repeat this working cycle.

[0087] Furthermore, in the case of maintenance, Figure 7 In the state shown in (i), the cycle is stopped, the clamping pin 43 is removed from the hole 28a of the jacket 28, and the injection vessel 2 is separated from the cover member 60 and the stirring mechanism 5. Thus, the injection vessel 2 is placed on the stop plate 7b of the stop mechanism 7. In this state, the cover member 60 and the stirring mechanism 5 are raised. Then, the connection portion 52 connecting the stirring shaft 53 and the stirring blade 51 is closed as shown in (i). Figure 8 As shown in (vi), it rises above the upper end of the injection vessel 2, and stops rising when the working space can be ensured around the connecting part 52.

[0088] Next, operate the connection part 52, such as... Figure 8 As shown in (vii), the stirring blade 51 is removed from the stirring shaft 53, leaving only the stirring blade 51 housed within the injection vessel 2. Since the injection vessel 2, housing the stirring blade 51, is placed on the stop plate 7b, it can move horizontally along with the stop plate 7b. After moving to a position deviating from directly below the connecting portion 4, maintenance such as cleaning the injection vessel 2 and the stirring blade 51 can be performed. As described above, since the injection vessel 2 is configured to be separate from the cover member 60 and the stirring mechanism 5, this molding apparatus 1 significantly improves maintenance operations. Furthermore, by detaching the stirring blade 51 as described above, it is not necessary to raise the lower end of the stirring blade 51 above the upper end of the injection vessel 2, allowing for a shorter vertical movement range of the stirring mechanism 5. Additionally, the vertical drive mechanism 3 can be miniaturized.

[0089] (5) Effects of this implementation method

[0090] The molding apparatus 1 of this embodiment includes: a vertical drive mechanism 3 for moving the cover member 60 vertically along the depth direction of the injection vessel 2; and a connecting part 4 for connecting the injection vessel 2 and the cover member 60 together or disconnecting the connection. Therefore, when it is necessary to move the injection vessel 2 vertically, by connecting it to the cover member 60 via the connecting part 4, the vertical drive mechanism 3 can be used to move it vertically. That is, according to the molding apparatus 1, a dedicated vertical drive mechanism for the injection vessel 2 is not required. Therefore, the configuration can be simplified, resulting in a simpler structure. Furthermore, if each component requiring vertical movement has its own dedicated vertical drive mechanism, it is necessary to check their relative positions while moving. In this case, controlling the relative positional relationships during driving becomes complex. However, according to this embodiment, since the vertical drive mechanism 3 is shared by both the cover member 60 and the injection vessel 2, the risk of interference is eliminated. In addition, the cycle time can be shortened.

[0091] [Summarize]

[0092] The molding apparatus of embodiment 1 of the present invention includes: an injection vessel for injecting foamed compound into the mold cavity of a mold from an injection port, a cover member for opening and closing the upper opening of the injection vessel, a vertical drive mechanism for moving the cover member up and down along the depth direction of the injection vessel, and a connecting part for removably connecting the injection vessel and the cover member.

[0093] According to the above configuration, the molding apparatus of one embodiment of the present invention does not need to have a dedicated drive mechanism for the up-and-down movement of the injection vessel, thus enabling a molding apparatus with a simpler configuration than conventional ones. When the injection vessel and the cover member are integrated by connecting the two parts, the up-and-down drive mechanism can move the injection vessel and the cover member up and down together. On the other hand, when this connection is removed, the up-and-down drive mechanism can move the cover member up and down without moving the injection vessel. That is, when it is necessary to move the injection vessel up and down, the connecting part is used to connect it to the cover member.

[0094] Furthermore, based on the above configuration, since the up-and-down drive mechanism is shared as the drive mechanism for the up-and-down movement of the cover member and the injection vessel, control becomes easier, and the cycle time from mixing to injection can be shortened compared to the past.

[0095] Furthermore, the molding apparatus according to embodiment 2 of the present invention, in embodiment 1 above, further includes a stirring mechanism for stirring the foamed compound in the injection vessel, and the up-and-down driving mechanism can be configured to cause the cover member and the stirring mechanism to move up and down as described above.

[0096] Based on the above configuration, since the stirring mechanism moves up and down using the up-and-down drive mechanism, it is not necessary to have a dedicated drive mechanism for the up-and-down movement of the stirring mechanism, thus enabling a simple mold-forming device.

[0097] Furthermore, in the mold-forming apparatus of embodiment 3 of the present invention, in embodiment 1 or 2 above, the connecting part may have a clamping pin, a jacket disposed in the injection vessel, and a driving part for driving the clamping pin.

[0098] Based on the above configuration, the connection between the cover component and the injection vessel and the disconnection of the connection can be easily achieved using the clamping device.

[0099] Furthermore, the molding apparatus according to embodiment 4 of the present invention, in embodiments 1 to 3 above, further includes: a stop plate having a stop for opening and closing the injection port, and a drive mechanism for moving the stop plate in the horizontal direction. The injection vessel is placed on the stop plate when the connection of the connecting part is released, and can move in the horizontal direction as the stop plate is moved by the drive mechanism.

[0100] According to the above configuration, a drive mechanism that moves the stop plate horizontally moves the injection vessel horizontally. Previously, during maintenance, the heavy injection vessel had to be removed from the molding apparatus within a limited space, resulting in poor workability and making cleaning the injection vessel very difficult. However, the molding apparatus according to one embodiment of the present invention allows for easier maintenance of the injection vessel compared to previous methods.

[0101] This invention is not limited to the embodiments described above, and various modifications can be made within the scope of the claims. Embodiments obtained by appropriately combining the disclosed technical means are also included within the technical scope of this invention.

Claims

1. A molding apparatus, comprising: The foamed compound is injected into the mold cavity of the mold through the injection port. The cover component for opening and closing the upper opening of the injection vessel; A stirring mechanism for stirring the foamed compound inside the injection vessel; An up-and-down drive mechanism that moves the cover member and the stirring mechanism up and down along the depth direction of the injection vessel; A connection portion that detachably connects the injection vessel to the cover member; A stopper plate having a stopper for opening and closing the injection port; as well as The drive mechanism that moves the bolt stop plate in the horizontal direction In the case where the injection vessel and the cover member are integrated by means of the connecting part, the up-and-down driving mechanism causes the injection vessel, the cover member, and the stirring mechanism to move up and down together, and When the connection between the injection vessel and the cover member is released at the connecting part, the up-and-down drive mechanism does not move the injection vessel up and down, but moves the cover member and the stirring mechanism up and down. The injection vessel is placed on the stop plate when the connection between the connecting part and the cover member has been released, and can move in the horizontal direction as the stop plate moves due to the movement of the drive mechanism.

2. The molding apparatus according to claim 1, wherein, The connecting part has a clamping pin, a jacket disposed in the injection vessel, and a driving part for driving the clamping pin.

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