Immediate demolding of formwork

Abstract

To provide a structure of an instant demolding formwork for a concrete product which can release the lock of side plates from any side of the side plates.SOLUTION: Provided is an instant demolding formwork 100 comprising: a bottom plate 10; a side plate part 30 for forming an upper face-opened box-shaped space 60 on the upper face of the bottom plate 10 with a first side plate 32 and a second side plate 34 mutually approachable / separable in the upper face of the bottom plate 10 and a third side plate 36 and a fourth side plate 38 erected in a facing state in the upper face of the bottom plate 10; a side plate driving mechanism 40 for bringing the first side plate 32 and the second side plate 34 into an approach / separation operation; and a side plate state switching part 50 disposed in a state of being bridged over the first side plate 32 and the second side plate 34 along the outer surfaces of the third side plate 36 and the fourth side plate 38 and switching a clamping state of forming the box-shaped space 60 into an openable state of making the box-shaped space 60 openable. The clamping state and the openable state can be switched only in either operation for a first rotating plate 51 or a second rotating plate 52.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to an instant demolding mold.

Background Art

[0002] When manufacturing concrete products typified by concrete blocks in a short time, a concrete material with a small amount of moisture is filled into a mold forming a molding space while vibration is applied, and after applying pressure to the concrete material filled in the molding space, an instant demolding mold that enables the immediate removal of the concrete product from the molding space is known. As such an instant demolding mold, for example, a configuration disclosed in Patent Document 1 (Japanese Patent Laid-Open No. 10-296711) is known.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The instant demolding mold disclosed in Patent Document 1 enables the removal of a concrete product from a molding space by only a worker arranged on one side of a belt conveyor while transporting the instant demolding mold with a molded product built therein by the belt conveyor (removing the concrete product from one side surface of a side plate of the instant demolding mold). In recent years, in a manufacturing apparatus for concrete products using an instant demolding mold, a form in which a material is input into a molding space and then the concrete product is taken out, and only the concrete block is carried out by a belt conveyor or the like is often adopted. In such an instant demolding mold in a manufacturing apparatus, it is necessary to rotate the instant demolding mold in a direction of turning it upside down within the manufacturing apparatus when taking out the concrete product.

[0005] Therefore, when applying the immediate demolding method disclosed in Patent Document 1, the locking mechanism for the immediate demolding formwork after rotation is located at the back of the manufacturing equipment, making it impossible for the operator to operate the locking mechanism. For this reason, the operator needs to release the lock on the side plate before rotating the immediate demolding formwork. However, releasing the lock on the side plate before rotating the immediate demolding formwork can cause damage to the concrete product during rotation, leading to a decrease in manufacturing yield. [Means for solving the problem]

[0006] Therefore, the present invention aims to propose an immediate demolding formwork for concrete products in which the side plates forming the molding space can be switched between unlocking and locking the side plates from either side of the opposing side plates.

[0007] In other words, the present invention comprises a base plate, a first side plate and a second side plate erected on the upper surface of the base plate facing each other and capable of moving closer together and further apart, a third side plate and a fourth side plate erected on the upper surface of the base plate facing each other, thereby forming a rectangular parallelepiped box-shaped space with an open top on the upper surface of the base plate, a side plate driving mechanism for moving the first side plate and the second side plate closer together and further apart, and a side plate driving mechanism disposed along the outer surfaces of the third side plate and the fourth side plate, respectively, and the The mold comprises a side plate state switching unit that switches between a clamping state in which the approaching and separating movements of the first side plate and the second side plate are restricted to form the box-shaped space with the side plate portion, and an openable state in which the approaching and separating movements of the first side plate and the second side plate are permitted to open the box-shaped space with the side plate portion, wherein pins are erected on the sides of the first side plate and the second side plate at both ends in the width direction, perpendicular to the direction in which the first side plate and the second side plate move toward and toward each other in the same horizontal plane, and the side plate state switching unit has elongated holes through which the pins are inserted. The device comprises a first rotating plate attached to the first side plate and a second rotating plate attached to the second side plate, which are formed and rotatable about the pin as a central axis; a connecting pin mounted parallel to the pin on the first and second rotating plates; a first hook and a second hook connected to the connecting pin on the first and second rotating plates; and a rod connecting the first hook and the second hook. The operator operates the side plate state switching unit to change the position of the connecting pin on the first rotating plate to the first rotating plate. The clamping state can be set by setting the position of the connecting pin on the second rotating plate to a position further outward than the position of the pin on the second rotating plate and closer to the bottom plate than the position of the pin, and by setting the position of the connecting pin on the second rotating plate to a position further outward than the position of the pin on the second rotating plate and closer to the bottom plate than the position of the pin, or by the operator operating the side plate state switching unit to set the position of the connecting pin on the first rotating plate to a position closer to the upper opening of the box-shaped space than the position of the pin on the first rotating plate, orThe opening state can be set by positioning the connecting pin on the second rotating plate to a position closer to the upper opening of the box-shaped space than the position of the pin on the second rotating plate, and the rod is formed to a length that allows switching between the clamped state and the opening state by operating only one of the first rotating plate or the second rotating plate, and the first rotating plate is provided with a first stopper that restricts the rotation of the first rotating plate so that in the opening state, the position of the connecting pin on the first rotating plate is closer to the upper opening of the box-shaped space than the position of the pin on the first rotating plate, and the second rotating plate is provided with a second stopper that restricts the rotation of the second rotating plate so that in the opening state, the position of the connecting pin on the second rotating plate is closer to the upper opening of the box-shaped space than the position of the pin on the second rotating plate. The rod comprises a first rod extending from the first hook, a second rod extending from the second hook, and a turnbuckle that is screwed onto a threaded portion formed in a required length range at the tip of the first and second rods. This is a formwork that can be immediately demolded, characterized by its features.

[0008] This makes it possible to switch the lock state of the side plates from either side of the opposing side plates in the immediate demolding formwork for concrete products, which forms the molding space.

[0010] This allows for fine adjustment of the rod length at the turnbuckle, eliminating the need to precisely adjust the lengths of the first and second rods that make up the rod. This reduces the manufacturing cost of the rod and allows for fine adjustment of the rod length. [Effects of the Invention]

[0011] According to the configuration of the present invention, in an immediate demolding formwork for concrete products, it becomes possible to switch the lock state of the side plates from either side of the opposing side plates in the side plate portion that forms the molding space. [Brief explanation of the drawing]

[0012] [Figure 1]This is a plan view showing the schematic configuration of the immediate demolding formwork in this embodiment. [Figure 2] This is a front view of the immediate demolding formwork in this embodiment. [Figure 3] This is a left side view of the immediate demolding formwork in this embodiment. [Figure 4] These are a front view and a top view of the assembled state of the first moving plate, the first hook, and the first rod in this embodiment. [Figure 5] Figure 4 is a front view of the assembly of the first rotating plate, first hook, and first rod, disassembled into the first hook, first rod, and first rotating plate. [Figure 6] Figure 3 is a left side view showing the immediate demolding formwork rotated in the direction of being inverted. [Figure 7] This is a left side view showing the state after the lock on the second moving plate has been released from the state shown in Figure 6, and the second side plate has been separated from the first side plate by the side plate drive mechanism. [Figure 8] This is a left side view showing the state following Figure 7, where the second side plate and the first side plate have completely separated. [Figure 9] This is a left side view showing the state following Figure 8, where the lock state of the first moving plate has been released. [Figure 10] This is a left side view showing the state following Figure 9, where the first moving plate has been locked again. [Figure 11] This is a left side view showing the state following Figure 10, where the first side plate is being brought closer to the second side plate by the side plate drive mechanism. [Figure 12] This is a left side view showing the state following Figure 11, where the first and second side plates have been brought as close together as possible, and the first and second rotating plates have been locked. [Modes for carrying out the invention]

[0013] The instant demolding formwork 100 in this embodiment is for manufacturing a concrete block for a revetment as a molded product. However, the molded product of the instant demolding formwork 100 in the present invention is not limited to the concrete block for a revetment.

[0014] As shown in FIGS. 1 and 2, the instant demolding formwork 100 in this embodiment includes a bottom plate 10, a core 20 disposed on the upper surface of the bottom plate 10, a side plate portion 30 erected on the upper surface of the bottom plate 10, a side plate driving mechanism 40 for moving a part of the side plate portion 30 to approach and separate, and a side plate state switching portion 50. A rectangular parallelepiped-shaped box-shaped space 60 with an upper surface opening as a molding space for a concrete block for a revetment (hereinafter simply referred to as a block) is formed on the upper surface of the bottom plate 10 by the bottom plate 10 and the side plate portion 30.

[0015] The bottom plate 10 in this embodiment is formed in a rectangular shape in plan view. A hydraulic cylinder 42, which is a part of the side plate driving mechanism 40 for moving a pair of opposing moving side plates 31, which are a pair of opposing side plates constituting the side plate portion 30, is attached to the longitudinal edge of the bottom plate 10 in plan view via an attachment stay 12. A core 20 is disposed on the upper surface of the bottom plate 10. The core 20 in this embodiment has a fixing member 26 for fixing a partition plate 22 for forming a plurality of blocks in the box-shaped space 60 and a contour forming plate 24 for forming a block contour line by abutting against the partition plate 22, but is not limited to this form. Also, the attachment of the core 20 to the bottom plate 10 can be omitted.

[0016] Further, the side plate portion 30 erected on the upper surface of the bottom plate 10 has a first side plate 32, a second side plate 34, a third side plate 36, and a fourth side plate 38 that are arranged in a rectangular shape in plan view along the outer peripheral edge of the bottom plate 10. In the present embodiment, an output shaft (not shown) of a hydraulic cylinder 42 that expands and contracts by the hydraulic pressure from a hydraulic supply pump 44 that forms a part of the side plate drive mechanism 40 is connected to the first side plate 32 and the second side plate 34, and they constitute moving side plates 31 that approach and separate from each other. The first side plate 32 and the second side plate 34 are erected parallel to the longitudinal side edge of the bottom plate 10 in plan view, and irregularities (not shown) for forming a pattern on the outer surface of the block are formed on the inner surface. Further, at both ends in the width direction of the first side plate 32 and the second side plate 34, pins 32A (34A) are erected on a side surface (a side surface parallel to the outer surface of the third side plate 36 or the fourth side plate 38) that is orthogonal to the direction in which the first side plate 32 and the second side plate 34 approach and separate from each other in the same horizontal plane.

[0017] Further, the third side plate 36 and the fourth side plate 38 are in contact with both end surfaces in the width direction of the first side plate 32 and the second side plate 34, and are erected parallel to the short-side edge of the bottom plate 10 in plan view. The third side plate 36 and the fourth side plate 38 are fixed to the bottom plate 10 at required positions on the upper surface of the bottom plate 10, and constitute fixed side plates 39.

[0018] The side plate drive mechanism 40 in the present embodiment includes a hydraulic cylinder 42 attached to the first side plate 32 and the second side plate 34, a hydraulic supply pump 44 that supplies hydraulic pressure to the hydraulic cylinder 42, and a hydraulic supply tube 46. The hydraulic supply tube 46 is connected to the hydraulic supply pump 44, the hydraulic cylinder 42, the first side plate 32, and the second side plate 34. Since the hydraulic cylinder 42, the hydraulic supply pump 44, and the hydraulic supply tube 46 can adopt known configurations, detailed descriptions of each configuration here are omitted.

[0019] In this embodiment, the fourth side plate 38 in the immediate demolding formwork 100 has the same shape as the third side plate 36. Therefore, by describing the form of the third side plate 36 using Figure 3, a detailed explanation of the fourth side plate 38 using the right side view is omitted. As shown in Figures 1 to 3, the immediate demolding formwork 100 in this embodiment has a side plate state switching section 50 arranged along the outer surface of the third side plate 36. The side plate state switching section 50 is arranged in a state where it spans the first side plate 32 and the second side plate 34. The side plate state switching section 50 switches between a clamped state in which the approaching and separating movements of the first side plate 32 and the second side plate 34 are restricted to form a box-shaped space 60, and an openable state in which the approaching and separating movements of the first side plate 32 and the second side plate 34 are permitted to open the box-shaped space 60.

[0020] As shown in Figures 3 to 5, the side plate state switching unit 50 in this embodiment includes a first rotating plate 51, a second rotating plate 52, a connecting pin 53, a first hook 54, a second hook 55, a rod 56, and a turnbuckle 57. Note that, in order to simplify the drawings, the side plate drive mechanism 40 is omitted from drawings other than Figures 1 and 2.

[0021] Two identical first rotating plates 51 are formed. The two first rotating plates 51 are positioned parallel to each other with a required gap in the thickness direction so that the positions of the elongated holes 58 overlap, and the first hook 54 is sandwiched in the gap between the first rotating plates 51, with the connecting pin 53 inserted through the connecting pin hole 54A to connect them. In other words, the first hook 54 is rotatable with the connecting pin 53 as its central axis of rotation. Pins 32A, which are erected on both ends of the first side plate 32 in the width direction, are inserted through the elongated holes 58 of the two first rotating plates 51 connected by the connecting pin 53. The first rotating plates 51 are held rotatably with the pins 32A inserted through the elongated holes 58 as their central axis of rotation.

[0022] Furthermore, an operating rod insertion portion 51A is attached to a part of the outer edge of the two connected first rotating plates 51, into which an operating rod (not shown) used by the operator when rotating the first rotating plates 51 is inserted. In this embodiment, the operating rod insertion portion 51A is formed as a cylindrical body and is attached by being sandwiched between the first rotating plates 51 at two locations on the outer edge of the first rotating plates 51, with different insertion angles for the insertion rod (the centerlines of each operating rod insertion portion 51A are perpendicular to each other). Note that the operating rod insertion portion 51A can also be attached to one or more locations at any position on the first rotating plates 51. In this embodiment, the inner surface of one of the operating rod insertion portions 51A functions as a first stopper 51B that restricts the rotation angle around the pin 32A of the first rotating plate 51.

[0023] The second rotating plate 52 is formed in the same way as the first rotating plate 51. That is, two identical second rotating plates 52 are formed. The two second rotating plates 52 are positioned parallel to each other with a required gap in the plate thickness direction so that the positions of the elongated holes 58 overlap, and the second hook 55 is sandwiched in the gap between the second rotating plates 52, with the connecting pin 53 inserted through the connecting pin hole 55A to connect them. That is, the second hook 55 is rotatable with the connecting pin 53 as its central axis of rotation. The two second rotating plates 52 connected by the connecting pin 53 have pins 34A, which are erected on both ends of the second side plate 34 in the width direction, inserted through the elongated holes 58. The second rotating plates 52 are held rotatably with the pins 34A inserted through the elongated holes 58 as their central axis of rotation.

[0024] Furthermore, an operating rod insertion portion 52A is attached to a part of the outer edge of the two connected second rotating plates 52, into which an operating rod (not shown) used by the operator when rotating the second rotating plates 52 is inserted. In this embodiment, the operating rod insertion portion 52A is formed as a cylindrical body and is attached by being sandwiched between the second rotating plates 52 at two locations on the outer edge of the second rotating plates 52, with different insertion angles for the insertion rod (the centerlines of each operating rod insertion portion 52A are perpendicular to each other). Note that the operating rod insertion portion 52A can also be attached to one or more locations at any position on the second rotating plates 52. In this embodiment, the inner surface of one of the operating rod insertion portions 52A functions as a second stopper 52B that restricts the rotation angle around the pin 34A of the second rotating plate 52.

[0025] Furthermore, a first rod 56A is connected to a first hook 54 which is rotatably connected to a connecting pin 53 of the first rotating plate 51, and the first rod 56A extends from the first hook 54 toward the second hook 55. A second rod 56B is connected to a second hook 55 which is rotatably connected to a connecting pin 53 of the second rotating plate 52, and the second rod 56B extends from the second hook 55 toward the first hook 54. In this embodiment, the rod 56 is composed of a first rod 56A and a second rod 56B. The required length range of the tip of the first rod 56A and the required length range of the tip of the second rod 56B are each formed as threaded portions 56C, and these threaded portions 56C are attached to the turnbuckle 57 by nuts 56D. This creates a link mechanism in which a first rod 56A extending from a first rotating plate 51 attached to the first side plate 32 and a second rod 56B extending from a second rotating plate 52 attached to the second side plate 34 are connected by a turnbuckle 57 in a manner that allows for length adjustment. The side plate state switching section 50, configured as a link mechanism in this way, is installed in a state where it is stretched between the first side plate 32 and the second side plate 34.

[0026] The operator can operate the side plate state switching unit 50 by inserting an operating rod (not shown) into the operating rod insertion part 51A (52A) from either the first side plate 32 (first rotating plate 51) side or the second side plate 34 (second rotating plate 52) side and rotating it. By operating the side plate state switching unit 50, the box-shaped space 60 formed in the bottom plate 10 and the side plate part 30 can be switched between a clamped state and an openable state.

[0027] The clamping state of the immediate demolding formwork 100 will now be described. In this embodiment, the worker's standing position in the block manufacturing apparatus (not shown) using the immediate demolding formwork 100 is facing the first side plate 32 at the start of block manufacturing (the right side position of the immediate demolding formwork 100 in each left side view described later). After the concrete material for immediate demolding has been formed in the box-shaped space 60, the immediate demolding formwork 100 is rotated in a direction that inverts it upside down within the block manufacturing apparatus in order to remove the block. That is, the worker's standing position in the block manufacturing apparatus does not change, but the worker's standing position when removing the block is facing the second side plate 34. The worker's standing position relative to the immediate demolding formwork 100 is assumed to be as described above.

[0028] The operator can rotate the first rotating plate 51, which is located on the side of the first side plate 32, and rotate the second rotating plate 52 via the link mechanism of the side plate state switching section 50, which is connected to the first rotating plate 51 and the second rotating plate 52. When the operator rotates the first rotating plate 51, the position of the connecting pin 53 on the second rotating plate 52 is set to a position further outward than the position of pin 34A and closer to the bottom plate 10 than the position of pin 34A, thereby locking the second rotating plate 52. Subsequently, the operator rotates the first rotating plate 51, setting the position of the connecting pin 53 on the first rotating plate 51 to a position further outward than the position of pin 32A and closer to the bottom plate 10 than the position of pin 32A, thereby locking the first rotating plate 51. In this embodiment, by locking both the first moving plate 51 and the second moving plate 52 of the immediate demolding formwork 100, the first side plate 32 and the second side plate 34, which are moving side plates 31, enter a clamped state in which their approaching and separating movements are restricted. In the clamped state, a box-shaped space 60, which is the space for forming the block, is formed and maintained.

[0029] Concrete material for immediate demolding is filled into the box-shaped space 60 of the immediately demolding formwork 100, which is in a clamped state. After the concrete material is poured into the box-shaped space 60, a lid (not shown) that presses down on the concrete material filled in the box-shaped space 60 is attached to the upper opening of the immediately demolding formwork 100 by the block manufacturing device. The worker applies vibration to the immediately demolding formwork 100 and the lid using the block manufacturing device and moves the lid into the inside of the box-shaped space 60 to perform compression molding of the concrete material. Since this method of compression molding of concrete material using the immediately demolding formwork 100 is well known, a detailed explanation is omitted here. Once the compression molding of the concrete material filled in the box-shaped space 60 is complete, the worker rotates the immediately demolding formwork 100 in an inverted direction using the block manufacturing device and proceeds to the block removal process.

[0030] The operation to switch from the clamped state to the release-ready state in order to remove the blocks from the immediate demolding formwork 100 will be described. As shown in Figure 6, the immediate demolding formwork 100 has been rotated in a direction that is inverted vertically compared to the state when the concrete material was poured, and the worker rotates the second rotating plate 52 in the direction of arrow A in Figure 6. Then, as shown in Figure 7, the position of the connecting pin 53 on the second rotating plate 52 is moved to a position closer to the upper opening of the box-shaped space 60 than the position of the pin 34A on the second rotating plate 52 (a position lower than the position of pin 34A in Figure 7). In this way, once the locked state of the second rotating plate 52 (or the first rotating plate 51) is released, the approach and separation movement of the first side plate 32 and the second side plate 34 is permitted, and the box-shaped space 60 can be opened to a release-ready state. In this embodiment, the release-ready state of the immediate demolding formwork 100 refers to the state in which the locked state of at least one of the first rotating plate 51 or the second rotating plate 52 is released.

[0031] When the second rotating plate 52 rotates to a predetermined rotation angle, the inner surface of the operating rod insertion portion 52A, which acts as the second stopper 52B, comes into contact with the second hook 55. As a result, the rotation of the second rotating plate 52 around the pin 34A is restricted so that, in the openable state, the position of the connecting pin 53 of the second rotating plate 52 on the side of the first rotating plate 51 is lower in Figure 7 than the position of the pin 34A of the second rotating plate 52 (the position on the side of the upper opening of the box-shaped space 60 (lid side)). When the operator operates the hydraulic supply pump 44, the output shaft of the hydraulic cylinder 42 extends due to the hydraulic pressure supplied via the hydraulic supply tube 46, and the first side plate 32 and the second side plate 34 separate, as shown in Figure 7. In this embodiment, due to the length of the hydraulic supply tube 46 from the hydraulic supply pump 44, immediately after the hydraulic supply pump 44 is activated, only the second side plate 34 will be separated from the first side plate 32 (towards the operator).

[0032] Furthermore, by setting the distance between the second stopper 52B, which restricts the rotation angle of the second rotating plate 52, and the connecting pin 53 of the first rotating plate 51 and the connecting pin 53 of the second rotating plate 52 to a predetermined length, the connecting pin 53 of the second rotating plate 52 can maintain a position inside (on the side of the first rotating plate 51) of the pin 34A and below the pin 34A in Figure 7. In this way, by rotating the first rotating plate 51 or the second rotating plate 52 while the position of the connecting pin 53 of the second rotating plate 52 relative to the pin 34A is restricted in the openable state, it is possible to switch the second rotating plate 52 or the first rotating plate 51 from the openable state to the clamped state.

[0033] Then, once the separation movement of the second side plate 34 from the first side plate 32 is complete (the second side plate 34 has separated to the maximum design separation distance), the first side plate 32 moves in the direction away from the second side plate 34, as shown in Figure 8. At this time, the first rotating plate 51 is in a locked state, and the second rotating plate 52 is pulled by the second rod 56B, which is connected to the first rod 56A extending from the first rotating plate 51 via a turnbuckle 57. Furthermore, the distance between the connecting pin 53 of the first rotating plate 51 and the connecting pin 53 of the second rotating plate 52 is constant, and since the second rotating plate 52 has an elongated hole 58, the second rotating plate 52 moves towards the first rotating plate 51 along the elongated hole 58 which is oriented laterally. This allows the first side plate 32 to separate from the second side plate 34. Furthermore, as shown in Figure 9, once the first side plate 32 and the second side plate 34 are separated to their maximum extent, the operator may rotate the second rotating plate 52 to release the clamping state (locked state) of the first rotating plate 51, which is located at the back of the block manufacturing device (and cannot be directly operated).

[0034] By immediately demolding the mold 100 to the state shown in Figure 8 or Figure 9, the block can be removed from the box-shaped space 60 and placed on a lid (not shown). In practice, the lid and the block placed on the lid can be transported out of the block manufacturing apparatus by a transport device such as a belt conveyor (not shown).

[0035] Next, as shown in Figure 9, the process of moving the first side plate 32 and the second side plate 34 as far apart as possible, then bringing them closer together again, and switching the box-shaped space 60 to the clamped state will be explained. As shown in Figure 10, the operator rotates the second rotating plate 52 to lock the first rotating plate 51, which is located at the back of the block manufacturing device (and cannot be operated directly). Subsequently, the operator reverses the rotation of the hydraulic supply pump 44 to bring the first side plate 32 and the second side plate 34 closer together. In Figure 11, the first side plate 32 first approaches the second side plate 34. After this, once the approach of the first side plate 32 to the second side plate 34 is complete (the first side plate 32 contacts the third side plate 36 and the fourth side plate 38), the second side plate 34 approaches the first side plate 32. Eventually, the second side plate 34 comes into contact with the third side plate 36 and the fourth side plate 38, and the first side plate 32, the second side plate 34, the third side plate 36, and the fourth side plate 38 once again form a rectangular side plate section 30 in plan view.

[0036] Next, as shown in Figure 12, the worker rotates the second movable plate 52 to lock it as well. By rotating the immediate demolding formwork 100 in the direction of inversion as shown in Figure 12, it can be brought to the state shown in Figure 3, allowing concrete material to be poured into the box-shaped space 60, and the same operation can be repeated thereafter.

[0037] In the embodiments described above, the operation procedure for block manufacturing when a new immediate demolding formwork 100 is applied to a block manufacturing apparatus has been explained. However, when repeatedly manufacturing blocks with the block manufacturing apparatus, the immediate demolding formwork 100 in a clamped state is supplied to the worker. Therefore, the worker can immediately pour concrete material into the box-shaped space 60.

[0038] The immediate demolding mold 100 according to the present invention has been described above based on this embodiment, but the technical scope of the present invention is not limited to the above embodiment. For example, in this embodiment, the immediate demolding mold 100 is rotated in the direction of inversion after compression molding of the block as shown in Figure 6, and only the locked state of the second rotating plate 52 is released, but the invention is not limited to this form. It is also possible to adopt a form in which the operator releases the locked state of the first rotating plate 51 immediately before or after the locked state of the second rotating plate 52. When the locked state of the first rotating plate 51 is released and the first rotating plate 51 rotates around the pin 32A by the required angle, the inner surface of the operating rod insertion part 51A, which acts as the first stopper 51B, comes into contact with the first hook 54. As a result, the rotation of the first rotating plate 51 around pin 34A is restricted, similar to the second rotating plate 52, so that when it is in the openable state, the position of the connecting pin 53 of the first rotating plate 51 remains lower in Figure 7 than the position of pin 32A of the first rotating plate 51.

[0039] Furthermore, in this embodiment, after the state shown in Figure 9, only the first rotating plate 51 is locked. However, even if the first rotating plate 51 and the second rotating plate 52 remain unlocked, the first side plate 32 and the second side plate 34 can be brought closer together. In this case, even after the approach of the first side plate 32 and the second side plate 34 is complete, the operator can rotate the immediate demolding formwork 100 in the direction of inverting it upside down while the first rotating plate 51 and the second rotating plate 52 remain unlocked. Alternatively, after the approach of the first side plate 32 and the second side plate 34 is complete, the operator can lock the first rotating plate 51 and the second rotating plate 52 and then rotate the immediate demolding formwork 100 in the direction of inverting it upside down. This allows the immediate demolding formwork 100 to be brought into the state shown in Figure 3.

[0040] Furthermore, although the rod 56 in this embodiment is composed of a first rod 56A and a second rod 56B, it can also be formed from a single rod 56 whose length has been pre-adjusted. If a single rod 56 is used, it is preferable to provide a turnbuckle 57 at the connection point with either the first hook 54 or the second hook 55 in order to accommodate changes in length due to thermal expansion of the rod 56 and to enable fine adjustment of the length of the rod 56.

[0041] Furthermore, the configuration of this embodiment described above can also be adapted by combining it with the modifications described in the specification or other known configurations as appropriate. [Explanation of Symbols]

[0042] 10: Bottom plate 12: Mounting bracket 20: Middle child 22: Partition plate, 24: Contour forming plate, 26: Fixing member 30: Side plate part 31: Movable side plate, 32: First side plate, 32A: Pin, 34: Second side plate, 34A: Pin, 36: Third side plate, 38: Fourth side plate, 39: Fixed side plate 40: Side panel drive mechanism 42: Hydraulic cylinder, 44: Hydraulic supply pump, 46: Hydraulic supply tube 50: Side panel state switching section 51: First moving plate, 51A: Operating rod insertion part, 51B: First stopper, 52: Second moving plate, 52A: Operating rod insertion part, 52B: Second stopper, 53: Connecting pin, 54: First hook, 54A: Connecting pin hole, 55: Second hook, 55A: Connecting pin hole, 56: Rod, 56A: First rod, 56B: Second rod, 56C: Threaded part, 56D: Nut, 57: Turnbuckle, 58: Slotted hole 60: Box-shaped space 100: Immediate demolding of formwork

Claims

[Claim 1] The structure comprises a base plate, a first side plate and a second side plate erected on the upper surface of the base plate facing each other and capable of moving closer together and further apart, a third side plate and a fourth side plate erected on the upper surface of the base plate facing each other, forming a rectangular parallelepiped-shaped box-like space with an open top on the upper surface of the base plate, a side plate drive mechanism for moving the first side plate and the second side plate closer together and further apart, and a side plate state switching unit disposed along the outer surfaces of the third side plate and the fourth side plate, respectively, and spanning across the first side plate and the second side plate, switching between a clamped state in which the movement of the first side plate and the second side plate is restricted to form the box-like space with the side plate section, and an openable state in which the movement of the first side plate and the second side plate is permitted to open the box-like space with the side plate section. At both ends in the width direction of the first and second side plates, pins are erected on the sides perpendicular to the direction in which the first and second side plates move toward and away from each other within the same horizontal plane. The side plate state switching section includes a first rotating plate attached to the first side plate and a second rotating plate attached to the second side plate, both having an elongated hole through which the pin is inserted and rotatable about the pin as a central axis; a connecting pin mounted parallel to the pin on the first and second rotating plates; a first hook and a second hook connected to the connecting pin on the first and second rotating plates; and a rod connecting the first hook and the second hook. The clamped state can be set by an operator operating the side plate state switching unit to set the position of the connecting pin on the first rotating plate to a position further outward than the position of the pin on the first rotating plate and closer to the bottom plate than the position of the pin, and by setting the position of the connecting pin on the second rotating plate to a position further outward than the position of the pin on the second rotating plate and closer to the bottom plate than the position of the pin, and the openable state can be set by an operator operating the side plate state switching unit to set the position of the connecting pin on the first rotating plate to a position closer to the top opening of the box-shaped space than the position of the pin on the first rotating plate, or by setting the position of the connecting pin on the second rotating plate to a position closer to the top opening of the box-shaped space than the position of the pin on the second rotating plate. The rod is formed to a length that allows switching between the clamped state and the open state by operating only one of the first rotating plate and the second rotating plate. The first rotating plate is provided with a first stopper that restricts the rotation of the first rotating plate so that, in the openable state, the position of the connecting pin of the first rotating plate on the side of the second rotating plate is located closer to the upper opening of the box-shaped space than the position of the pin of the first rotating plate. The second rotating plate is provided with a second stopper that restricts the rotation of the second rotating plate such that, in the openable state, the position of the connecting pin of the second rotating plate on the side of the first rotating plate is located closer to the upper opening of the box-shaped space than the position of the pin of the second rotating plate. The aforementioned rod is A ready-to-deform formwork characterized by having a first rod extending from the first hook, a second rod extending from the second hook, and a turnbuckle that is screwed onto a threaded portion formed in a required length range at the tip of the first rod and the second rod.

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