JP5226405B2 - Formwork device - Google Patents

Description

  The present invention relates to a formwork apparatus for molding a block having a hollow hole that linearly penetrates in a longitudinal direction, for example, a concrete block such as a side groove block, a culvert block, or a box culvert.

  2. Description of the Related Art Conventionally, as one form of a formwork apparatus, an outer frame body, an inner frame body arranged in the outer frame body, and a loading / unloading portion for taking the inner frame body into and out of the outer frame body are provided. There exists what shape | molds the block which has a hollow hole (for example, refer patent document 1).

Then, such a formwork apparatus reduces the diameter of the inner frame body at the time of demolding the molded block, and then pulls out from the outer frame body while pushing up the inner frame body using a booster mechanism. I try to let them leave.
Japanese Utility Model Publication No. 6-44646

  In the above-described formwork device, when the molded block is removed, the inner frame body is pulled out while being pushed up by using a boosting mechanism so as to be detached from the molded block. There are problems such as being damaged and the inner frame not being removed smoothly.

Therefore, in the present invention, an outer frame body, an inner frame body arranged in the outer frame body, and a take-in / out portion for taking in and out the inner frame body into and from the outer frame body have a linear through-hole. A mold apparatus for molding a block, wherein the inner frame body is freely changeable in an outer frame body between a diameter-expanded attitude in an assembled state of the mold and a diameter-reduced attitude to be detached from the molded block. In addition, the loading / unloading portion includes an arm body that penetrates into the inner frame body and supports the inner frame body so that the inner frame body can be inserted into and removed from the outer frame body, and the inner frame body in the expanded posture is supported by the outer frame body. On the other hand, the upper surface molding part of the inner frame floats from the arm body by a predetermined interval, while the inner frame body in a reduced diameter posture descends by its own weight by the fixed interval that has floated, and the upper surface molding part contacts the arm body. so as to be contact supporting, the out unit, Tose' a top forming portion of the inner frame member in erection form A pair of left and right arm bodies are provided, and a distal end side coupling body is horizontally mounted between the distal end portions of both arm bodies, and a proximal end side coupling body is horizontally disposed between the proximal end portions of both arm bodies to form a frame shape. The distal end side coupling body is formed as one end side engagement piece that engages with one end of the inner frame body when the inner frame body is pulled out, while the proximal end side coupling body is formed when the inner frame body is pushed in. The present invention provides a mold apparatus characterized in that the other end side engaging piece is engaged with the other end of the body .

  The present invention is also characterized by the following configuration.

The support part supporting the outer frame body is slidably attached to the insertion / removal part via the extension / contraction slide part, and the extension / contraction slide part is arranged adjacent to each other by arranging a plurality of slide bodies extending in the extension direction in a superposed state. Extending substantially half of the slide bodies so as to be in a superposed state, and supporting the support portion in a cantilevered state with the loading / unloading portion extending through the telescopic slide portion.

  (1) According to the first aspect of the present invention, an outer frame body, an inner frame body arranged in the outer frame body, and a loading / unloading portion for taking the inner frame body in and out of the outer frame body are provided. A mold apparatus for molding a block having a through-hole, wherein the inner frame body is divided into a diameter-expanded posture in a mold-assembled state and a diameter-reduced posture to be detached from the molded block in the outer frame body. The posture can be freely changed, and the insertion / removal portion includes an arm body that penetrates the inner frame body and supports the inner frame body so that the inner frame body can be inserted / removed from the outer frame body. Supported by the body, the upper surface molding part of the inner frame floats up from the arm body at a constant interval, while the inner frame body in a reduced diameter posture descends by its own weight at the fixed interval that floated to the arm body. The upper surface molding portion is abutted and supported.

  As described above, when the molded block is removed, the inner frame body in the reduced diameter posture is lowered by its own weight by a predetermined interval, and is separated from the molding block, and the upper surface molding portion is abutted and supported by the arm body. Therefore, the inner frame body can be smoothly pulled out from the molding block and the outer frame body by the loading / unloading portion. Therefore, after that, since the outer frame body is simply opened, it can be easily taken out without damaging the molding block. Further, when the inner frame body is pulled out by the drawer portion, it is not necessary to provide a booster mechanism because a large acting force is not required, and the structure of the mold apparatus itself can be reduced in size and simplified.

The insertion / removal portion includes a pair of left and right arm bodies that abut on and support the upper surface molding portion of the inner frame body, and the distal end side coupling body is horizontally mounted between the distal end portions of both arm bodies. One end side engagement that engages with one end of the inner frame body when the inner side frame body is pulled out by forming a base end side coupling body horizontally between the base end portions of the arm body to form a frame shape. On the other hand, the base-end connected body is formed as a second end-side engaging piece that engages with the other end of the inner frame when the inner frame is pushed.

  Thus, since the pair of left and right arm bodies, the distal end side coupling body, and the proximal end side coupling body are formed in a frame shape, the rigidity of the cantilevered arm body can be secured, and the distal end side The connecting body and the base end side connecting body also function as engaging pieces that engage with the inner frame body, respectively, and the inner frame body can be reliably put in and out.

(2) In the present invention as set forth in claim 2 , a loading / unloading portion is slidably attached to the support portion supporting the outer frame body via the expansion / contraction slide portion, and the expansion / contraction slide portion extends in the extension direction. The slide body is placed in a superposed state and is extended so that approximately half of adjacent slide bodies are in a superposed state, and the support part is cantilevered in a stretched state via the telescopic slide part. I have to.

  In this way, since it is possible to extend so that substantially half of the plurality of slide bodies extending in the extension direction are in a superposed state, it is possible to easily make an elongated slide part appropriately long according to the length of the block to be formed. Can be formed. Therefore, it is possible to ensure a good work for inserting and removing the inner frame, and it is possible to efficiently remove the molding block.

  The best mode of the present invention will be described below with reference to the drawings.

  FIG. 1 is an explanatory side view of a formwork apparatus A according to the present invention, and FIG. 2 is an explanatory back view of the formwork apparatus A.

  As shown in FIGS. 1 and 2, the formwork apparatus A is configured by mounting a formwork body 2 extending in the front-rear direction on the support portion 1, and is a block having straight through-holes ( (Not shown) can be molded as a product.

  The support unit 1 includes a plurality of (three in the present embodiment) pillow bodies 3 that extend in the left-right direction and are arranged at intervals in the front-rear direction, and a pair of left and right slides that extend in the front-rear direction on the pillow bodies 3. The rail bodies 4, 4 are mounted and configured.

  An extendable slide portion 5 is disposed between the slide rail bodies 4, 4, and the extendable slide portion 5 extends in the extension direction (the front-rear direction in this embodiment) as shown in FIGS. 6 and 7. A plurality of (two in the present embodiment) slide bodies 6 and 7 formed in a frame shape in rear view are arranged in a superposed state in a nested manner, and adjacent slide rail bodies 4 and 4 and a base arranged on the inside thereof are arranged. The substantially half parts of the slide body 6 on the end side are stretched so that they are in a superposed state, and the half parts of the slide body 6 on the base end side and the slide body 7 on the distal end side disposed inside thereof are superposed. The support portion 1 is extended so as to be in a state, and the loading / unloading portion 8 is cantilevered and supported in an overhanging state via the telescopic slide portion 5. 4a and 7a are guide rollers, respectively.

  As shown in FIG. 5, the loading / unloading portion 8 includes a pair of left and right arm bodies that are erected on the front end portion (rear end portion) of the slide body 7 on the front end side and forward from the support post 9. 10 and 10 are extended substantially horizontally, and a horizontally elongated rectangular plate-like distal end side coupling body 11 is horizontally mounted between the distal end surfaces of both arm bodies 10 and 10, and a cross section is provided between the base end portions of both arm bodies 10 and 10. The L-shaped base end side coupling body 12 is formed in a frame shape so as to extend horizontally, and the distal end side coupling body 11 is engaged with one end of the inner frame body 15 when the inner frame body 15 described later is pulled out. On the other hand, the base end side coupling body 12 serves as the other end side engagement piece that engages with the other end of the inner frame body 15 when the inner frame body 15 is pushed. Reference numeral 13 denotes a gripping portion provided on the upper rear surface of the support column 9. An operator grips the gripping portion 13, and slides the insertion / removal portion 8 in the front-rear direction via the telescopic slide portion 5, which will be described later. The inner frame 15 can be inserted into and removed from the body 14 manually.

  The mold body 2 is formed by an outer frame body 14 having an upper surface opening, an inner frame body 15 as a core, a pair of front and rear mirror surface molded bodies 16 and 16, and an opening forming body 17.

  The outer frame body 14 is formed on the left and right outer side surfaces around the fulcrums 14b and 14b at the left and right side edge portions of the base portion piece 14a which is an upper end surface molding piece for molding the upper end surface of the block molded in an inverted state. The pieces 14c and 14c can be opened and closed in an upright state and an outwardly inclined state so that the mold can be opened at the time of demolding.

  As shown in FIG. 5, the mirror surface molded body 16 is provided with an opening inner peripheral edge portion 16a having the same shape as the hollow hole of the block molded in an inverted state, and the mirror surface molded bodies 16 and 16 are opposed to each other in the front-rear direction. The inner frame body 15 is used as a core by arranging and installing a cylindrical inner frame body 15 extending in the front-rear direction between the opening inner peripheral edge portions 16a, 16a of both mirror surface molded bodies 16, 16 in a penetrating state. It is installed and a hollow hole is formed by the inner frame 15. Then, the mirror surface molded body 16 can be opened and closed at the front and rear ends of the base piece 14a, with the fulcrums 16b and 16b as the center, and the mirror surface molded bodies 16 and 16 can be opened and closed in an upright state and an outwardly inclined state. When removing the mold, the mold can be opened after the inner frame 15 is pulled out. At this time, the middle portion of the lower surface of the inner frame body 15 is supported by the upper surface of the concave portion of the opening forming body 17.

  As shown in FIG. 4, the inner frame body 15 includes a support piece 15 a that is a bottom surface forming piece for forming a bottom surface of a block that is formed as an upper surface forming portion, that is, a block that is formed in an inverted state in this embodiment, and a hollow hole Are provided with expansion / contraction diameter pieces 15b, 15b, which are a pair of left and right side surface formation pieces for forming the left and right side surfaces, and an action piece 15c acting on both expansion / contraction diameter pieces 15b, 15b.

  And the support piece 15a is formed in the plate shape extended in the front-back direction, The base edge part (upper end) of the expansion / contraction diameter pieces 15b and 15b via the expansion / contraction fulcrum parts 15d and 15d at the right-and-left side edge part of the support piece 15a. Edge). Further, the expansion / contraction diameter pieces 15b, 15b are formed in a plate shape extending in the front-rear direction, and are formed in a band shape extending in the front-rear direction between the front end edges (lower end edge parts) of the both expansion / contraction diameter pieces 15b, 15b. The piece 15c is interposed so as to freely advance and retract. 18 is an expansion / contraction coupling body interposed between the expansion / contraction diameter pieces 15b, 15b, 19 is an expansion / contraction operation rod linked to the expansion / contraction connection body 18, and 20 shown in FIG. 1 is connected to the rear end of the expansion / contraction operation rod. The expansion / contraction operation body is provided so that both the expansion / contraction diameter pieces 15b, 15b can be expanded / contracted by rotating the expansion / contraction operation body 20. Reference numerals 21 and 22 denote action piece fixing tools. The base end portions of the action piece fixing tools 21 and 22 are pivotally supported by the lower portions of the mirror surface molded bodies 16 and 16 via pivot portions 23 and 24, respectively. The tip portions of the tools 21 and 22 are detachably locked to fixing projections 25 and 26 projecting from the front and rear ends of the action piece 15c.

  Here, the state in which the action piece 15c is interposed between the tip edge portions (lower end edge portions) of the expansion / contraction diameter pieces 15b, 15b is the diameter expansion state of the expansion / contraction diameter pieces 15b, 15b. In this state, the front and rear end portions are in contact with the inner peripheral edge portions 16a and 16a of the opening. At this time, the distal end portions of the action piece fixtures 21 and 22 are locked to the fixing protrusion pieces 25 and 26 of the action piece 15c. Further, the action piece 15c is slid upward and retracted from between the front end edges (lower end edges) of the expansion / contraction diameter pieces 15b, 15b, and the front end edges of the expansion / contraction diameter pieces 15b, 15b approach each other. The state is the reduced diameter state of the expanded / reduced diameter pieces 15b, 15b, and is the mold disassembly state in which the front and rear end portions are separated from the opening inner peripheral edge portions 16a, 16a of the mirror surface molded bodies 16, 16. At this time, the distal ends of the action piece fixtures 21 and 22 are unlocked from the fixing protrusions 25 and 26 of the action piece 15c.

  A plurality of suspension bodies 27 having a T-shape in rear view are provided on the lower surface of the support piece 15a so as to extend in the front-rear direction, and are supported between the pair of left and right arm bodies 10 and 10 through the suspension bodies 27. The piece 15a is suspended. When the inner frame body 15 is pulled out, the distal end side connecting body 11 as one end side engagement piece abuts and engages with the foremost suspension body 27, and when the inner frame body 15 is pushed in, the other end side engagement body is engaged. The base end side coupling body 12 which is a piece is brought into contact with and engaged with the rearmost suspension body 27. Accordingly, the inner frame body 15 is restricted in its front-rear direction movement by the connecting bodies 11, 12 and left-right direction movement is restricted by the pair of left and right arm bodies 10, 10 via the suspension body 27. Vertical movement is free.

  In the expanded state of the expanded / contracted diameter pieces 15b, 15b, the inner frame 15 is supported between the opening inner peripheral edge portions 16a, 16a of the mirror surface molded bodies 16, 16 opposed to the front and rear, and the pair of left and right arm bodies 10 is supported. , 10 so as to float upward by a predetermined interval t (see FIG. 4A). Specifically, the lower surfaces of the left and right side portions 27a and 27a of the suspension body 27 are separated upward from the upper surfaces of the arm bodies 10 and 10 by a predetermined interval (for example, 2 mm) t.

  Further, in the reduced diameter state of the expanded / reduced diameter pieces 15b, 15b, the inner frame body 15 is lowered downward by its own weight by a predetermined interval t, and the support piece 15a is in contact with and supported by the pair of left and right arm bodies 10, 10. Thus, the inner frame 15 is supported by the arm bodies 10 and 10 in a suspended state. Specifically, the lower surfaces of the left and right side portions 27a and 27a of the suspension body 27 are lowered by a predetermined interval (for example, 2 mm) t so as to contact the upper surfaces of the arm bodies 10 and 10. At this time, the surface of the support piece 15a and the pair of left and right enlarged / reduced diameter pieces 15b, 15b is separated from the inner peripheral surface of the hollow hole of the block by a predetermined interval (for example, about 2 mm) t. Therefore, the inner frame 15 can be smoothly pulled out from the block and detached.

  Thus, in the formwork apparatus A of the present embodiment, the inner frame body 15 can be easily pulled out from the molded block and removed with a simple configuration in which the inner frame body 15 as a core is dropped by its own weight. Therefore, the mold apparatus A can be manufactured at a low cost, and the block can be efficiently molded and removed from the mold apparatus A.

Side surface explanatory drawing of the formwork apparatus which concerns on this invention. The back explanatory drawing of the same formwork apparatus A. FIG. The rear view of a mirror surface molded object. (A) Explanatory drawing of the diameter expansion state of an inner frame, (b) Explanatory drawing of the diameter reduction state of an inner frame. (A) Plane explanatory drawing of an in / out part, (b) Side explanatory drawing of an in / out part. (A) Plane explanatory drawing of the expansion | extension state of an expansion-contraction slide part, (b) Plane | planar explanatory drawing of the shortening state of an expansion-contraction slide part, (c) The II sectional view explanatory drawing of (b). II-II sectional view explanatory drawing of FIG.6 (b).

Explanation of symbols

DESCRIPTION OF SYMBOLS A Formwork apparatus 1 Support part 2 Formwork body 5 Extendable slide part 8 Putting in / out part 10 Arm body 14 Outer frame body 15 Inner frame body

Claims (2)

A mold for forming a block having a straight through-hole, comprising an outer frame, an inner frame arranged in the outer frame, and a take-in / out part for taking the inner frame in and out of the outer frame. A device,
In the outer frame body, the inner frame body can be freely changed in posture to a diameter-expanded posture in a mold assembly state and a reduced-diameter posture to be detached from the molded block,
The taking in / out part comprises an arm body that penetrates into the inner frame body and supports the inner frame body so that it can be taken in and out freely from the outer frame body,
The inner frame body in the expanded posture is supported by the outer frame body, and the upper surface molding portion of the inner frame body floats from the arm body by a predetermined interval, while the inner frame body in the reduced diameter posture floats. The upper surface molding part is brought into contact with and supported by the arm body by falling by its own weight at a constant interval ,
The loading / unloading portion includes a pair of left and right arm bodies that abut on and support the upper surface molding portion of the inner frame body. The distal end side coupling body is horizontally mounted between the distal end portions of both arm bodies, and both arm bodies are A base end side coupling body is horizontally placed between the base end portions of the
The distal end side coupling body serves as one end side engagement piece that engages with one end of the inner frame body when the inner frame body is pulled out, while the proximal end side coupling body is the other of the inner frame body when the inner frame body is pushed in. A formwork device characterized in that the other end side engaging piece is engaged with the end . The support part supporting the outer frame body is slidably attached to the insertion / removal part via the extension / contraction slide part, and the extension / contraction slide part is arranged adjacent to each other by arranging a plurality of slide bodies extending in the extension direction in a superposed state. approximately half of the sliding bodies is is extended so that the polymerized state, claim 1 Symbol mounting is characterized in that so as to the cantilevered state overhanging the out unit via a telescopic sliding portion to the support portion Formwork equipment.

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