JP2005297246A - Apparatus for producing concrete block - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for producing a concrete block which can improve production efficiency while reducing facility costs and running costs by making both of a core-exposed pressurized surface and a core-nonexposed pressurized surface be pressurized by one press means when a concrete block with holes is produced by an immediate demolding method. <P>SOLUTION: The apparatus 1 has an excitation means 41 having a form 6 for molding uncured concrete, a vibration table 39 which can join the form 6 attachably/detachably, and an excitation member 40 vibrating the vibration table 39, a core insertion/extraction means 43 for inserting/extracting the core 42 into/from the side part of the form 6, and the press means 44 which pressurizes the upper surface of the uncured concrete packed in the form 6 and freely changes over a press state to a partial press state for pressurizing the upper surface of the uncured concrete while avoiding the core 42 or to a total press state for pressurizing the upper surface of the uncured concrete approximately according to the plane shape of the form 6. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

The present invention relates to a concrete block manufacturing apparatus suitable for manufacturing a composite porous block with holes, for example.
In the present specification, the composite porous block refers to a concrete block obtained by laminating porous concrete having continuous voids and dense ordinary concrete.

  Porous concrete is porous concrete with continuous voids, and has the property of allowing water and air to freely pass through, so it has the function of naturally purifying water quality by microorganisms that inhabit the porous interior and exterior surfaces. . In order to make full use of such characteristics, it is preferable to make the porosity as large as possible. However, if the porosity is made too large, there is a dilemma that the strength is lowered this time.

  Therefore, in order to ensure the strength and other performance as a concrete block for civil engineering structures while taking advantage of the above-mentioned porous concrete, a composite porous block in which porous concrete and ordinary concrete are laminated has already been developed. For example, uncured porous concrete is placed on the mold bottom plate, zero slump super-concrete ordinary concrete is placed on it, and the top surface is pressurized and vibrated, then immediately removed. It can be manufactured by molding (see Patent Document 1).

JP-A-10-151612 (Claim 2)

  By the way, in the composite porous block manufacturing method described above, a first layer of concrete made of uncured porous concrete is filled into a mold and the vibration table is vibrated while pressing the upper surface thereof, and then uncured plain concrete If the mold is filled with a second layer of concrete and the vibration table is vibrated while pressing the upper surface, ordinary concrete is filled on the porous concrete once compacted by the pressure vibration. Therefore, the ratio of mixing of both concretes during the final pressure vibration is reduced, and a composite porous concrete with high dimensional accuracy in which the joint surfaces of both concretes appear more clearly can be obtained.

  However, for example, a pedestrian road boundary block (see FIG. 12) and a slope greening block, which will be described later, with respect to a composite porous block that is a laminate of porous concrete and ordinary concrete, a hole that straddles the laminated surface of both concrete There are products that need to be formed. In the case of such a composite porous block with holes, it is necessary to mold the concrete with the core mounted in the mold in advance, but the core is exposed when pressing the upper surface of the first layer of concrete. This interferes with the press work.

  That is, in this type of immediate mold release type concrete manufacturing apparatus, a press machine that pressurizes the upper surface of the concrete usually has a press surface that substantially corresponds to the shape of the upper surface. When the pressing work is performed on the first layer of concrete, the upper surface of the concrete cannot be properly pressed due to the presence of the core. For this reason, if it is going to adopt the above-mentioned manufacturing method which applies pressure vibration not only to the second layer but also to the first layer concrete, a dedicated press machine and vibration table for pressure vibration to the first layer concrete are installed. It is necessary to add to manufacturing equipment separately, and the problem that equipment cost becomes high arises in this respect.

  Also, even if a press machine and a vibration table for the first layer of concrete are installed, the work place for applying pressure vibration to the first layer of concrete and work for applying pressure vibration to the second layer of concrete It is necessary to secure a place. In this respect, the running cost becomes high, and after the pressure vibration for the first layer of concrete is finished, the formwork is set again at the pressure vibration position for the second layer of concrete. Since it is necessary, there is also a problem that production efficiency increases and production efficiency deteriorates.

  In view of such a situation, the present invention provides a pressing means for both a pressed surface where a core is exposed and a pressed surface where the core is not exposed in manufacturing a perforated concrete block by an immediate demolding method. An object of the present invention is to provide a concrete block manufacturing apparatus that can improve the production efficiency while reducing the equipment cost and running cost.

In order to achieve the above object, the present invention takes the following technical means.
That is, the concrete block manufacturing apparatus according to the present invention includes an uncured concrete mold, a vibration table that can be detachably connected to the mold, and a vibration member that applies vibration to the vibration table. Vibration means, core insertion / removal means for inserting / removing the core from the side of the mold, and press means for pressing the upper surface of the uncured concrete filled in the mold Can be switched between a partial press state in which the upper surface of the uncured concrete is pressed in a state where the core is avoided, and a full press state in which the upper surface of the uncured concrete is pressed according to the substantially planar shape of the molding mold. And a pressing means.

  According to the present invention described above, a partial press state in which the upper surface of the uncured concrete is pressed in a state where the pressing means avoids the core, and a full surface press in which the upper surface of the uncured concrete is pressed according to the substantially planar shape of the molding frame. Since the core is exposed on the pressed surface of the concrete, pressurize in a partially pressed state, and the core is not exposed on the pressed surface. In this case, it is sufficient to press the entire surface in a pressed state, and both the pressed surface where the core is exposed and the pressed surface where the core is not exposed can be pressed with a single pressing means.

For this reason, it is not necessary to add a press machine dedicated to the surface to be pressed with the core exposed and a vibration table corresponding to the press machine to the manufacturing equipment, and the equipment cost can be reduced and the press machine dedicated to them can be used. In addition, since it is not necessary to separately secure a work place for pressure vibration by the vibration table, the running cost of the manufacturing apparatus can be reduced.
In addition, since the pressing work on the pressurized surface where the core is exposed and the pressing work on the non-exposed pressure surface can be performed with one pressing means, after the pressure vibration on the first layer of concrete is over, There is no need to reset the formwork when applying pressure vibration to the second layer of concrete, and production efficiency can be improved in this respect.

In the present invention, if another pressing member that gives vibration to the upper surface of the uncured concrete is provided in the press means, the vibration member that gives vibration to the vibration table is combined with the unhardened concrete. Since vibration can be applied from both the upper and lower sides, the work time required for compacting the uncured concrete can be shortened.
On the other hand, in the present invention, when the concrete block manufacturing apparatus adopts a reversing means having a reversing table on which a vibration table and a core inserting / removing means are mounted and a reversing mechanism for reversing the table up and down. It is preferable to provide a lock means for fixing the vibration table to the reversal table at the time of reversal and releasing the fixation at the time of vibration.

If such a lock means is adopted, the vibration table is fixed to the reversal table at the time of reversal, so that it can be reversed without disturbing the compacted state of the molded concrete in the molding frame connected to the vibration table, and at the time of vibration Since the fixation is released, the vibration table can freely vibrate with respect to the reversing table, and the uncured concrete in the molding form connected to the vibration table can be vibrated so as to be in a uniform compacted state. .
In the case of a concrete block manufacturing apparatus adopting a material supply unit having a material input hopper of uncured concrete and a hopper feeder that can transport the hopper directly above a molding form mounted on a vibration table. It is preferable to provide a leveling means for leveling the upper surface of the uncured concrete in the material charging hopper substantially flush.

By adopting such leveling means, it is possible to adjust the amount of uncured concrete to be put into the molding form substantially uniformly and to obtain a uniform concrete block with high dimensional accuracy.
Further, in the present invention, if an embedding means for embedding and positioning an embedded member with respect to uncured concrete inside from the outside of the molding mold is employed, the embedded member (anchor or cylinder described later) is simultaneously formed with the concrete. Embedment of the object etc.).

By the way, in the case of a drainage block such as a pedestrian boundary block described later, a water collecting slit may be formed to introduce rainwater or the like from the outside. In order to prevent clogging, the intake port is preferably a so-called reverse gradient hole that is narrow and wide toward the inside. However, it is very difficult to mold such a reverse-gradient hole with a core. Therefore, as the embedded member, a cylindrical body having a hole portion whose inner space portion gradually increases toward the inner side of the concrete is used. If it is adopted and such a cylindrical body is left buried in a concrete molded product, a concrete block having a reverse gradient hole can be manufactured very easily.

Furthermore, in the present invention, when the concrete block manufacturing apparatus adopts a reversing means having a reversing table on which a vibration table and a core inserting / removing means are mounted and a reversing mechanism for reversing the table up and down. A demolding table for receiving the mold mold that has been inverted while the upper end opening is closed by the blocking plate, and lowering the demolding table above the cross-sectional height of the mold mold to remove the uncured concrete. It is preferable to provide lifting means for removing the mold from the mold.
In this case, after releasing the fixing between the closing plate and the molding frame, the mold release table is lowered by the lowering means to the height of the cross section of the molding frame or more so that the compacted concrete is not disturbed. Concrete can be removed from the mold.

Further, in the case of providing the mold release table and the lifting / lowering means, the molding mold frame is fixed to the upper surface of the vibration table before reversing, and the inner mold is inserted into the guide frame so as to be movable up and down. Preferably, the vibration table is provided with extraction means for extracting the inner mold frame downward from the guide frame in synchronization with the lowering of the mold release table.
In this case, after releasing the fixation between the closing plate and the molding form, if the demolding table is lowered by the lowering means to the height of the cross section of the molding form, the inner mold form filled with the molded concrete is removed. The mold will be removed from the guide frame by the means, and the molded concrete will be removed in a state protected by the inner mold frame, so it is possible to more reliably prevent the concrete from being disturbed during demolding. can do.

  As described above, according to the present invention, in manufacturing a concrete block with a hole by an immediate demolding method, both the pressed surface where the core is exposed and the pressed surface where the core is not exposed are pressed together. Since pressurization can be performed by means, production efficiency can be improved while reducing facility costs and running costs.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 12 shows a composite porous block 201 with a hole to be manufactured by the concrete block manufacturing apparatus according to the present embodiment, and the porous block 201 is a walking road boundary block having a drainage function. Among these, the block 201A in FIG. 12A is a straight line type used for a road straight-line portion, and the block 201B in FIG. 12B is a curved type used for a curve portion in a road intersection.
The boundary block 201 has a precast block body in which the upper half of the cross section is composed of the porous concrete layer 202 and the lower half of the cross section is composed of the ordinary concrete layer 203 having the same thickness as the upper half. 204.

  The block main body 204 includes a base portion 205 embedded in a paved road surface, and a vehicle riding portion 206 formed in a porous concrete portion on the upper surface side of the base portion 205. The ride-up portion 206 is inclined so that the upper surface gradually becomes lower toward the roadway side, and has a cross-sectional height at which a vehicle such as a wheelchair or a passenger car can easily ride. The block main body 204 of the pedestrian road boundary block 201 is formed with a circular drainage passage 207 penetrating in the longitudinal direction inside the cross section, and the center of the drainage passage 207 is approximately the two concrete layers 202 and 203. The block main body 204 is disposed at the center of the cross section so as to be located on the joint surface.

Thus, the boundary block 201 shown in FIG. 12 is configured such that the upper portion of the block main body 204 extending from the upper surface of the block main body 204 to the drainage channel 207 is constituted by the porous concrete layer 202, thereby flowing to the upper surface of the block main body 204. External water such as rain water passes through continuous voids in the porous concrete layer 202 and is taken into the drainage channel 207. Further, the boundary block 201 shown in FIG. 12 is formed with two water collecting slits 208 penetrating in an inclined manner from the upper surface of the block main body 204 to the drainage channel 207, and such water collecting slits 208 are formed. As a result, the water collection function of external water is enhanced.
But the composite porous block 201 with a hole used as the manufacturing object of the concrete block manufacturing apparatus which concerns on this embodiment should just be a two-layer structure with a hole and porous concrete, and a walkway boundary block shown in FIG. Other than the above, for example, a slope greening block or the like may be used.

FIGS. 1-10 has shown an example of the manufacturing apparatus 1 of the concrete block which employ | adopted this invention. As shown in FIG. 1, the manufacturing apparatus 1 of the present embodiment vibrates while pressurizing a material supply unit 2 that measures and conveys porous concrete and ordinary concrete, and uncured concrete supplied from the material supply unit 2. A press molding unit 3 for molding, a demolding unit 4 for demolding the molded concrete from the molding mold 6, and a transport unit 5 for transporting the demolded concrete to the outside of the apparatus. ing.
In FIG. 1, reference numeral 7 denotes a hydraulic unit that supplies hydraulic oil to hydraulic equipment such as a hydraulic cylinder that drives each of the above parts 2 to 5, and reference numerals 8 and 9 denote a control panel and an operation panel, respectively. In the following, the direction of the reference sign X shown in FIG. 1 is defined as the left-right direction of the manufacturing apparatus 1, and the direction of the reference sign Y shown in FIG.

Among the units 2 to 5 constituting the manufacturing apparatus 1 of the present embodiment, the material supply unit 2 measures the first supply unit 11 that measures and conveys porous concrete and the second supply unit that measures and conveys ordinary concrete. 12.
Among these, the 1st supply part 11 is the material feeder 14 consisting of the fixed hopper 13 for receiving the porous concrete carried in from the outside of the apparatus, and the belt conveyor which conveys the porous concrete discharged | emitted from the lower part of this hopper 13 ahead. And a material supply unit 15 that measures and transports the porous concrete conveyed from the feeder 14 to the press molding unit 3.

As shown in FIG. 9, the material supply unit 15 of the first supply unit 11 is a transport frame that is long in the left-right direction provided on the right side (right side in FIG. 1, right side in FIG. 9A) of a vibration table 39 to be described later. 16, a material charging hopper 17 mounted on the transport base 16 so as to be slidable in the left-right direction, and a hopper capable of transporting the hopper 17 directly above the molding frame 6 mounted on the vibration table 39. And a feeder 18.
The material charging hopper 17 is formed of a hollow rectangular tube whose upper and lower ends are open, and its lower end opening is closed by a flat slide lid 19 that is slidable in the left-right direction. The tip of the drive rod of the open / close cylinder 20 is connected to the right end edge of the slide lid 19, and the slide lid 19 is slid in the left-right direction by the drive rod of the open / close cylinder 20 to open the lower end of the material charging hopper 17. Can be opened and closed.

The hopper feeder 18 is composed of a pair of left and right feed cylinders 21 and 21 disposed on the transport frame 16 with the material charging hopper 17 sandwiched from both sides in the width direction (vertical direction in FIG. 9A). The tip ends of the drive rods 21 and 21 are connected to a bracket projecting from the side surface in the width direction of the material charging hopper 17. Therefore, as shown by the phantom line in FIG. 9, when the material loading hopper 17 is extended from the retracted position on the conveyance platform 16 in synchronization with the drive rods of the feed cylinders 21, 21, the material loading hopper 17 It moves to the left together with the slide lid 19 and the opening / closing cylinder 20 and is positioned directly above the molding frame 6.
As will be described later, in the manufacturing apparatus 1 of the present embodiment, since the pair of left and right molding molds 6 and 6 are disposed on the vibration table 39, the inside of the material charging hopper 17 is inside the pair of molds 6. , 6 are partitioned into a pair of material weighing chambers 22, 22 formed in a planar shape corresponding to each.

In the material supply hopper 17 of the first supply unit 11, leveling means 23 for leveling the upper surface of the uncured porous concrete in the hopper 17 is provided. The leveling means 23 includes a swirl vane 25 that is rotatably provided on an installation plate 24 that spans the upper end opening of the material charging hopper 17, and a swirl motor 26 that rotationally drives the swirl vane 25. ing.
The swirl vane 25 is inserted through a rotary boss portion provided in a suspended form from the center of the erection plate 24 of the material charging hopper 17 so as to be rotatable about an axis in the vertical direction. By turning at 26, the upper surface of the porous concrete in the material charging hopper 17 can be leveled.

  As shown in FIG. 1, the second supply unit 12 is disposed on the left side of the first supply unit 11, and includes a fixed hopper 28 for receiving ordinary concrete carried from outside the apparatus, and a lower portion of the hopper 28. The material feeder 29 includes a belt conveyor that conveys the discharged ordinary concrete forward, and the material supply unit 30 that measures the ordinary concrete conveyed from the feeder 29 and transfers it to the press molding unit 3. The material feeder 29 of the second supply unit 12 is disposed in parallel with the material feeder 14 of the first supply unit 11.

As shown in FIG. 10, the material supply unit 30 of the second supply unit 12 is transported long in the front-rear direction provided on the rear side of the vibration table 39 described later (upper side in FIG. 1, right side in FIG. 10A). A gantry 31, a material charging hopper 32 mounted on the conveyance gantry 31 so as to be slidable in the front-rear direction, and the hopper 32 can be conveyed directly above the molding frame 6 mounted on the vibration table 39. A hopper feeder 33 is provided.
The material feeding hopper 32 of the second supply unit 12 is also formed of a hollow rectangular tube whose upper and lower ends are open, but its lower end opening is not closed by a lid but remains open. A pair of adjustment cylinders 35, 35 for adjusting the level of the lower edge of the front wall of the hopper 32 are provided on the front end surface of the material charging hopper 32. By finely adjusting the vertical position of the front wall of the material charging hopper 32 with the adjusting cylinder 35, the concrete charging fee when the material charging hopper 32 is retracted can be adjusted.

The hopper feeder 33 includes a single feed cylinder 36 disposed on the rear side (right side in FIG. 10A) of the material charging hopper 32, and the tip of the drive rod of this cylinder 36 is located on the rear side surface of the material charging hopper 32. It is connected. Therefore, as shown by the phantom line in FIG. 10, when the drive rod of the feed cylinder 36 is extended from the retracted position where the material charging hopper 32 is located on the conveyance base 31, the material charging hopper 32 is moved forward together with the adjusting cylinder 35. It moves so that it is positioned directly above the mold 6.
As will be described later, in the manufacturing apparatus 1 of the present embodiment, since the pair of left and right molding molds 6 and 6 are arranged on the vibration table 39, the inside of the material charging hopper 32 is inside the pair of mold frames 6. , 6 are partitioned into a pair of left and right material measuring chambers 37, 37 formed in a planar shape corresponding to each.

A leveling means 23 for leveling the upper surface of the uncured ordinary concrete in the hopper 32 is also provided inside the material feeding hopper 32 of the second supply unit 12. The leveling means 23 includes a swirl vane 25 that is rotatably provided on an installation plate 24 that spans the upper end opening of the material charging hopper 32, and a swirl motor 26 that rotationally drives the swirl vane 25. ing.
The swirl vane 25 is inserted through a rotary boss portion provided in a suspended form from the center of the erection plate 24 of the material charging hopper 32 so as to be rotatable about the vertical axis. By turning at 26, the upper surface of the ordinary concrete in the material charging hopper 32 can be leveled.

  As shown in FIG. 2 and FIG. 3, the press molding unit 3 vibrates the uncured concrete molding form 6, a vibration table 39 that can removably connect the molding form 6, and the vibration table 39. A vibrating means 41 having a vibrating member 40 to be applied; a core inserting / removing means 43 for inserting / removing a core 42 for molding the drainage channel 207 of the block 201 from the side of the molding frame 6; Press means 44 for pressing the upper surface of the uncured concrete filled in the mold 6, a reversing table 45 on which a vibration table 39 and a core inserting / removing means 43 are mounted, and a reversing mechanism for reversing the table 45 up and down Inverting means 47 having 46 (see FIG. 6).

  Among these, the vibration table 39 of the excitation means 41 is made of a hollow plate material having a substantially rectangular shape in plan view, and a plurality of elastic support members 48 (accordingly, a total of four in this embodiment) are arranged at the four corners of the lower surface thereof. And is connected to the upper surface of the reversing table 45. On the lower surface of the vibration table 39, the vibration member 40 composed of a pair of front and rear vibration motors formed by connecting an eccentric weight to a drive shaft is attached. Therefore, when the vibration member 40 is operated, the vibration table 39 vibrates in a relatively short cycle substantially the same as the rotation cycle of the vibration member 40 due to the elasticity of each elastic support member 48, and thereby mounted on the vibration table 39. Vibration can be imparted to the molded mold 6 and the uncured concrete inside.

Note that the molding form 6 of the present embodiment is formed in an interior shape that is an upside down version of the pedestrian road boundary block 201 shown in FIG. 12. For this reason, in the manufacturing apparatus 1 of the present embodiment, the molding mold 6 is formed. After the porous concrete is first filled in the frame 6 with a predetermined thickness, the ordinary concrete is filled in the mold 6. Moreover, in the manufacturing apparatus 1 of this embodiment, the same molding form 6 is provided with one pair with respect to one vibration table 39, and two concrete blocks can be shape | molded by one shaping | molding operation.
However, only one molding mold 6 may be provided for one vibration table 39, or three or more molding molds 6 may be provided.

As shown in FIGS. 3 and 5, the core inserting / removing means 43 is inserted through the rear end wall portions of the molding dies 6 and 6 so as to be movable in the front-rear direction (left-right direction in FIG. 5). Further, a substantially cylindrical core 42, an insertion / removal bracket 50 fixed to the rear end (right end in FIG. 5) of the core 42, and a drive rod housed in the vibration table 39 and retracted in the front-rear direction. It is comprised from the insertion / removal cylinder 51 which has these. The tip of the drive rod of the insertion / removal cylinder 51 is connected to the insertion / removal bracket 50. For this reason, when the drive rod of the insertion / removal cylinder 51 is protruded, the core 42 is extracted from the molding die 6, and when the rod is inserted, the core 42 is inserted into the molding die 6. .
A support roller 52 is provided at the rear end portion of the vibration table 39 to support the base end portion of the core 42 in a cantilevered manner so as to be retractable.

The pressing means 44 is mounted on an elevating frame 53 having an area that substantially surrounds the vibration table 39 and the reversing table 45, an elevating slider 54 that is connected to the frame 53 so as to be movable up and down, and a lower part of the slider 54. A vibration plate 55 and a pressing member 56 mounted on the lower surface of the plate 55 and having a pressing surface for uncured concrete on the lower end side are provided.
Further, the pressing means 44 of the present embodiment has either a partial press state in which the pressing surface of the pressing member 56 against the uncured concrete avoids the core 42 or a full press state in accordance with the substantially planar shape of the mold 6. A switching mechanism 57 (see FIG. 7) for switching between the two is provided.

As shown in FIGS. 2 and 3, the elevating frame 53 is formed by connecting a base plate 58 and a top end plate 59 to each other by four elevating columns 60, and an elevating cylinder 61 is installed in the lower half portion of each column 60. It is connected. Each of the elevating cylinders 61 includes an elevating rod 62 that protrudes and retreats in the vertical direction from the upper end. By connecting the tip of the elevating rod 62 to the edge of the elevating slider 54, the elevating slider 54 is moved within the elevating frame 53. It is to be lifted and lowered.
A connecting rod 63 is provided in a penetrating manner at the four corners of the elevating slider 54, and a vibration plate 55 is fixed to the lower end of the rod 63. A spring shoe 64 made of a coil spring is wound around the lower end portion of the connecting rod 63, and the vibration plate 55 is moved up and down by connecting the elevating slider 54 and the vibration plate 55 with the connecting rod 63 with the spring shoe 64 interposed. The slider 54 is suspended so as to be able to vibrate.

Further, on the upper surface of the vibration plate 55, a second vibration member 65 composed of a pair of front and rear vibration motors formed by connecting an eccentric weight to the drive shaft is attached. Therefore, when the second vibration member 65 is operated, the vibration plate 55 vibrates in a relatively short cycle substantially the same as the rotation cycle of the second vibration member 65 due to the elasticity of each spring shoe 64, thereby pressing the vibration plate 55. Vibration can be applied to the upper surface of the uncured concrete via the member 56.
Thus, in the manufacturing apparatus 1 of the present embodiment, the second vibrating member 65 that applies vibration to the upper surface of the uncured concrete is the pressing means, separately from the first vibrating member 40 on the vibration table 39 side. 44.

As shown in FIGS. 7 and 8, the pressing member 56 of the present embodiment includes a pair of left and right side presses 67 and 67 fixed to positions on the lower surface of the vibration plate 55 corresponding to the molding frames 6 and 6. The center press 68 is housed between the side presses 67 and 67 so as to be movable up and down. The distance between the pressing plates 69 of the pair of side presses 67, 67 is substantially the same as the diameter of the core 43, and the width of the pressing plate 70 of the center press 68 is substantially the same as the diameter of the core 42. It is a dimension.
The switching mechanism 57 includes the presses 67 and 68 and a switching cylinder 71 formed by a hydraulic cylinder standing on the upper surface of the vibration plate 55. The drive rod 72 of the switching cylinder 71 is inserted through a hole formed in the vibration plate 55, and the upper end of the center press 68 is directly connected to the lower end of the drive rod 72.

  Therefore, when the drive rod 72 of the switching cylinder 71 is immersed and the center press 68 is raised, the pressing plate 70 of the center press 68 does not contact the core 42, and only the pressing plates 69 of the side presses 67 and 67 are not touched. It will be in the partial press state (state of FIG. 7) which presses the upper surface of hardened concrete. On the other hand, when the drive rod 72 of the switching cylinder 71 is protruded and the center press 68 is lowered, the pressing plate 70 of the center press 68 becomes flush with the pressing plates 69 of both side presses 67 and 67. Both pressing plates 69 and 70 of 68 are in a full press state in which the upper surface of the uncured concrete in the mold 6 is pressed.

  As shown in FIGS. 2 and 4, in the manufacturing apparatus 1 of the present embodiment, the embedding means 75 for embedding and positioning the embedding member 74 with respect to the uncured concrete inside the molding mold 6 vibrates from the outside of the mold 6. It is mounted on the table 39. This buried member 74 is for molding the water collecting slit 208 of the pedestrian road boundary block 201, and as shown in FIG. 11, the through hole in which the inner space portion gradually increases toward the inner side of the concrete. It consists of a rectangular tube having both ends 76 in the longitudinal direction and is made of a synthetic resin such as plastic.

  The burying means 75 includes a support bracket 77 formed in an outwardly-opening inclined shape at both the left and right ends of the vibration table 39 and a positioning cylinder 78 attached to the support bracket 77, and a drive rod 79 of the cylinder 78. A positioning plate 80 to which two embedment members 74 made of the cylindrical body can be detachably attached is fixed to the front end. Therefore, by attaching the embedded member 74 to the tip of the immersed drive rod 79 and then projecting the rod 79 toward the mold frame 6, the embedded member 74 can be positioned at a predetermined position in the mold frame 6. It has become.

In the state where the embedded member 74 is positioned in the molding die 6, the tip edge formed in a concave curved shape comes into contact with the outer peripheral surface of the core 42. Therefore, by leaving the buried member 74 inside the concrete and burying it, the water collecting slit 208 can be formed by the hole 76 penetrating the inside of the buried member 74.
Further, the burying member 74 embedded by the burying means 75 is not limited to the cylinder for forming the water collecting slit 208 as shown in FIG. 12, but may be an anchor bolt or an anchor nut.

As shown in FIG. 6, the reversing table 45, which is a constituent member of the reversing means 47, is provided so as to be swingable in the vertical direction via a reversing shaft 81 facing in the front-rear direction provided adjacent to the left side of the lifting frame 53. The reversing gear 82 is fixed to the rear end portion of the reversing shaft 81. A rack 83 is engaged with the reversing gear 82, and the reversing table 45 is rotated 180 degrees by moving the rack 83 up and down by a hydraulic cylinder (not shown) to convert the linear motion of the rack 83 into the rotational motion of the reversing gear 82. It can be reversed.
Thus, the reversing mechanism 46 for vertically reversing the reversing table 45 is constituted by the reversing gear 82, the rack 83, and a hydraulic cylinder (not shown) for driving them.

  Further, in the manufacturing apparatus 1 of the present embodiment, the reversing table 45 is equipped with a locking means 85 that fixes the vibration table 39 to the reversing table 45 at the time of reversing and releases the fixing at the time of vibration. As shown in FIGS. 4 and 6, the lock means 85 is composed of a total of four lock members 86 having dead bolts attached to the four corners of the reversing table 45 and retracting electromagnetically or hydraulically. By fitting 86 dead bolts into the holes of the lock pieces protruding from the vibration table 39, the vibration table 39 can be fixed to the reversing table 45 so as not to vibrate.

  For this reason, by operating the lock means 85 at the time of reversal to regulate the vibration of the vibration table 39, it can be reversed without disturbing the compacted state of the molded concrete in the mold 6 connected to the vibration table 39. it can. On the other hand, when the vibration is applied, the locking means 85 is released so that the vibration table 39 can freely vibrate with respect to the reversing table, so that the uncured concrete in the molding frame 6 connected to the vibration table 39 can be made uniform. It can be vibrated so as to be in a consolidated state.

  As shown in FIGS. 4 and 5, rotary fixing for fixing the end portions of the closing plate 87 that closes the upper end openings of the two molding dies 6, 6 to both front and rear end portions of the upper surface of the vibration plate 39. A hook 88 is provided. The fixed hook 88 is provided so as to be swingable up and down via a rotation shaft in the front-rear direction, and a pinion is formed on the boss portion. A rack 90 driven by a fixed cylinder 89 is engaged with the pinion, and by moving the rack 90 back and forth (in the left-right direction in FIG. 5), the claw portion of the fixed hook 88 is attached to the closing plate 87. It can be engaged with and disengaged from the end. The means for fixing the closing plate 87 is not limited to the rotary fixing hook 88, and other types of locking devices such as a turning / tightening method can also be adopted.

As shown in FIG. 2, the demolding section 4 includes a demolding table 91 for receiving both molding molds 6 and 6 that have been inverted with the upper end opening closed by a closing plate 87, and the table 91. And a lowering means 92 for releasing uncured concrete from the molding mold 6 by lowering the height of the molding mold 6 to be equal to or higher than the cross-sectional height of the molding mold 6.
Among these, the mold release table 91 includes a pair of front and rear roller frames 94 fixed to a mold release frame 93 disposed on the left side of the elevating frame 53, and a plurality of lines arranged in the horizontal direction between the roller frames 94. Each of the rollers 95 is rotationally driven to the conveyance unit side (left side in FIG. 2) by being interlocked and connected to the conveyance motor 96 through a winding transmission mechanism such as a chain or a belt. It has become so.

The demolding table 91 is attached to the demolding frame 93 so as to be movable up and down, and is moved up and down along the demolding frame 93 by the lowering means 92. The lowering means 92 can be constituted by a power transmission mechanism that performs linear motion such as a hydraulic cylinder or a rack and pinion mechanism.
As shown in FIG. 7, the molding mold 6 of this embodiment includes a guide frame 98 fixed to the upper surface of the vibration table 39 before reversal, and an inner mold inserted through the guide frame 98 so as to be movable up and down. The frame 99 is composed of a frame 99 and has an inner / outer double structure. As shown in FIGS. 2 and 4, in the manufacturing apparatus 1 of this embodiment, the extraction means 100 for extracting the inner mold frame 99 downward from the guide frame 98 in synchronization with the lowering of the mold release table 91 vibrates. The table 39 is provided.

The extraction means 100 includes a pair of left and right extraction rods 101 provided below the vibration table 39 before reversing so as to penetrate the vibration table 39 and the guide frame 98 in the vertical direction, and a vertical direction between the extraction rods 101. And a drive rod of the cylinder 102 is connected to a central portion of a connecting bar 103 that connects the lower ends of the extraction rods 101 and 101 to each other.
Therefore, assuming that the vibration table 39 is in the state before reversing (the state shown in FIG. 4), when the drive rod of the extraction cylinder 102 is immersed, both extraction rods 101 and 101 protrude upward in the guide frame 98. The inner mold frame 99 is extracted upward from the upper end opening of the guide frame 98 by the tip.

  In this embodiment, the extraction cylinder 102 is operated in synchronization with the lowering of the demolding table 91 by the lowering means 92. Therefore, when the reversing table 45 is reversed and the molding frames 6 and 6 are placed on the demolding table 91 together with the closing plate 87, the demolding table 91 is released by the lowering means 92 after the lock by the fixing hook 88 is released. Is lowered to a height equal to or higher than the cross section of the mold 6, the inner mold 99 filled with the molded concrete is extracted from the guide frame 98 by the extraction rod 101, and the molded concrete is protected by the inner mold 99. Demolded in state.

As shown in FIG. 1, the transport unit 5 includes a rotary table 105 disposed on the left side of the mold release table 91, a feed table 107 having a number of idle rollers 106 disposed on the front side of the table 105, The table 107 is composed of a carry-out table 108 arranged further on the front side.
Next, the manufacturing method by the manufacturing apparatus 1 of the concrete block which concerns on the said structure is demonstrated with the effect | action.

When the walking road boundary block 201 shown in FIG. 12 is manufactured by the manufacturing apparatus 1 of the present embodiment, the reversing table 45 is initially in the normal rotation state (solid line state in FIG. 2) set at the press position of the lifting frame 53. The core 42 and the embedded member 74 are inserted into the molding molds 6 and 6 on the drive table 39. Moreover, the raising / lowering slider 54 of the press means 44 and the pressing member 56 mounted thereon are in the raised state (the phantom line state in FIG. 2).
In this state, first, uncured porous concrete accommodated in the fixed hopper 13 of the first supply unit 11 is conveyed by the material feeder 14, and only a predetermined amount is transferred to the material input hopper 17 of the material supply unit 15. . The porous concrete in the material charging hopper 17 is leveled substantially uniformly by the swirl vanes 25 of the leveling means 23.

Thereafter, the material charging hopper 17 of the first supply unit 11 is pushed out to the left by the feed cylinders 21 and 21. When the material feeding hopper 17 comes directly above the molding frames 6 and 6, the slide lid 19 is opened. The uncured porous concrete in 22 is filled in the molds 6 and 6, respectively.
Next, the elevating slider 54 of the pressing means 44 is lowered and the pressing members 56 and 56 are set inside the molding dies 6 and 6, respectively. At this time, the switching cylinder 71 raises the center press 68 so as not to interfere with the core 42 (see FIG. 7), and the pressing members 56, 56 are in a partially pressed state. For this reason, the pressing force by the elevating cylinder 61 is transmitted to the left and right side portions of the core 42 on the upper surface of the concrete via the pressing plate 69 of the side press 67.

Then, the upper and lower vibration members 40 and 65 are actuated under such a partial press state, whereby both pressurization and vibration are applied to the uncured porous concrete in the molds 6 and 6 for a predetermined time. Added.
Thus, when the pressurization vibration process with respect to porous concrete is complete | finished, the raising / lowering slider 54 of the press means 44 will raise by the raising / lowering cylinder 61, and the press member 56 will return to a raise state (virtual line state of FIG. 2).

Next, when the material charging hopper 32 of the second supply unit 12 is pushed forward by the feed cylinder 36 and comes directly above the molding dies 6, 6, the opening lid 34 is opened, and the respective material measuring chambers 37, 37 are opened. The uncured ordinary concrete inside is filled in the molds 6 and 6, respectively. The ordinary concrete in the material charging hopper 32 of the second supply unit 12 is also leveled substantially uniformly by the swirl vanes 25 of the leveling means 23.
Thereafter, the elevating slider 54 of the pressing means 44 is lowered and the pressing members 56 and 56 are set inside the molding dies 6 and 6, respectively. At this time, the center press 68 is lowered by the switching cylinder 71 so that the pressing plate 70 thereof is flush with the pressing plate 69 of the side press 67, and the pressing members 56, 56 are in a fully pressed state. For this reason, the pressing force by the elevating cylinder 61 is transmitted to the entire concrete upper surface via the pressing plates 69 and 70 of both the side press 67 and the center press 68.

Then, the upper and lower vibrating members 40 and 65 are operated under such a full-press state, whereby pressurizing and vibrating the uncured ordinary concrete and porous concrete in the molds 6 and 6 for a predetermined time. Both are added.
Thus, when the second pressure vibration process for the uncured concrete is completed, the elevating slider 54 of the pressing means 44 is raised by the elevating cylinder 61, and the pressing member 56 is raised (the phantom line state in FIG. 2). Return to. At this time, the locking means 85 is activated to fix the vibration plate 39 to the reversing table 45.

Next, after the upper end openings of both molds 6 and 6 are closed by the closing plate 87 and the ends thereof are fixed by the fixing hooks 88, the reversing table 45 is reversed by 180 degrees by the reversing mechanism 46. The frames 6 and 6 are placed on the demolding table 91 together with the closing plate 87.
Thereafter, the core 42 is removed from the molding die 6 by the insertion / removal cylinder 51 of the core insertion / removal means 43, while the embedded member 74 is removed from the positioning plate 80 and left in the molding die 6.

Then, while the lowering means 92 is actuated and the demolding table 91 is lowered, the extraction rod 101 protrudes into the guide frame 98 by the extraction cylinder 102, whereby the inner mold frame 99 is extracted from the guide frame 98. Thus, the molded concrete is removed from the guide frame 98 while being protected by the inner mold frame 99.
Thereafter, the molded concrete is sent to the transport unit 5 together with the closing plate 87, and is transferred from the carry-out table 108 to a curing space outside the apparatus.

  As described above, according to the manufacturing apparatus 1 of the present embodiment, the pressing member 56 of the pressing unit 44 presses the upper surface of the uncured concrete in a state where the core 42 is avoided, and the mold 6 Since it can be switched to either a full press state in which the upper surface of the uncured concrete is pressed almost according to the planar shape, when the core 42 is exposed on the pressed surface of the concrete, a partial press state is set. When the core 42 is not exposed on the surface to be pressed, the entire surface may be pressed in a pressed state. The surface to be pressed with the core 42 exposed and the surface to be pressed not exposed Both of them can be pressurized by one press means 44.

For this reason, it is not necessary to separately add a press machine dedicated to the surface to be pressed with the core 42 exposed and a vibration table 39 corresponding to the press machine to the manufacturing equipment 1, and the equipment cost can be reduced. Since there is no need to separately secure a work place for pressure vibration by the press machine or the vibration table 39, the running cost of the manufacturing apparatus 1 is also reduced.
In addition, the pressing work on the surface to be pressed with the core 42 exposed and the pressing operation on the surface to be pressed not exposed can be performed by one pressing means 44, so that the pressure vibration for the first layer of porous concrete is finished. After that, it is not necessary to reset the molding frame 6 when performing the pressure vibration on the second-layer ordinary concrete, and there is an advantage that the production efficiency can be improved in this respect.

  Moreover, according to the concrete block manufacturing method according to the above-described embodiment, the core 42 is taken out from the molding frame 6 immediately before the concrete molded body is immediately demolded. The (drainage 207) can be formed easily and cleanly without breaking. Further, according to the manufacturing method of the present embodiment, the core 42 is adopted from the straight rod-like member that penetrates the side wall of the molding frame 6 so that it can be inserted and removed along the axial direction. Immediately before molding, the core 42 can be removed from the mold by simply pulling the core 42 straight from the side wall of the molding frame 6 along its axial direction. There is an advantage that it becomes simple.

  Furthermore, according to the manufacturing method of the present embodiment, normal concrete is filled after the porous concrete is filled and pressurized and vibrated, so that the normal concrete is usually placed on the porous concrete once compacted by the pressurized vibration. Since the concrete is filled, the proportion of the two concretes mixed during the final pressure vibration is reduced, and a concrete block 201 with high dimensional accuracy in which the joint surface of both concretes appears more clearly is obtained.

The above-described embodiments are all illustrative and not restrictive.
For example, in the above embodiment, the porous concrete is first filled and pressure-vibrated, then the normal concrete is filled and the pressure-vibration is performed. Conversely, the normal concrete is first filled. After pressurizing and vibrating, porous concrete may be filled and pressurized and vibrated.
Further, the core 42 may be disposed not only at the joint portion between the porous concrete and the ordinary concrete but also at a portion corresponding to only one of the concrete. Further, the core 42 may have a curved rod shape whose axis is curved. However, in the case of the curved rod-shaped core 42, the dedicated core insertion / removal means 43 is required.

Furthermore, in the manufacturing apparatus 1 of the said embodiment, it can also be set as the structure which does not provide the core insertion / extraction means 43. FIG. In this case, since there is no core insertion / removal means 43, there is no need to provide the pressing means 44 with a switching mechanism for switching the pressing state of the pressing member 56.
For this reason, it deviates from the gist of the present invention according to claim 1, but the invention according to the subordinate claims (for example, leveling means 23, reversing means 47, locking means 85, extraction means 100, etc.). The technical effect relating to the invention having the independent configuration is achieved.

It is a schematic plan view of the manufacturing apparatus of a concrete block. It is a front view of the press molding part and mold release part of the same apparatus. It is a side view of the press molding part of the same apparatus. (A) is a front view of the vibration means mounted on the reversing table, and (b) is a plan view of the vibration means. (A) is AA sectional drawing of FIG. 4, (b) is BB sectional drawing of FIG. (A) is a top view of the inversion table shown in the state which removed the vibration plate, (b) is a front view of the inversion table. It is an enlarged front view of the pressing member of a press means. It is an enlarged side view of the pressing member of a press means. (A) is a top view of a 1st supply part, (b) is a side view of the supply part. (A) is a top view of a 2nd supply part, (b) is a side view of the same supply part. (A) is a front view of an embedded member, (b) is a plan sectional view of the member, (c) is a left side view of the member, and (d) is a right side view of the member. . (A) is a perspective view of a linear type walkway boundary block, (b) is a perspective view of a curved type walkway boundary block.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Concrete block manufacturing apparatus 2 Material supply part 3 Press molding part 4 Demolding part 5 Conveyance part 6 Molding form 15 Material supply unit 17 Material input hopper 18 Hopper feeder 22 Material measurement chamber 30 Material supply unit 32 Material input hopper 33 Hopper Feeder 39 Vibration table 40 Excitation member 41 Excitation means 42 Core 43 Core insertion / removal means 44 Press means 45 Inversion table 46 Inversion mechanism 47 Inversion means 65 Excitation member 74 Embedding member 75 Embedding means 76 Hole 85 Locking means 87 Closure plate 91 Demolding table 92 Lowering means 98 Guide frame 99 Inner mold frame 101 Extraction means

Claims (8)

A mold form of uncured concrete,
A vibration table having a vibration table that can be detachably connected to the molding form, and a vibration member that applies vibration to the vibration table;
Core insertion / removal means for inserting / removing the core from the side of the mold,
A pressing means for pressing the upper surface of the uncured concrete filled in the molding mold, wherein the pressing means presses the upper surface of the uncured concrete in a state avoiding the core; A pressing means that can be switched to either a full press state in which the upper surface of the uncured concrete is pressed according to a planar shape;
Concrete block manufacturing equipment equipped with.   The concrete block manufacturing apparatus according to claim 1, wherein another pressing member that applies vibration to the upper surface of the uncured concrete is provided in the pressing means. Reversing means having a reversing table on which the vibration table and the core inserting / removing means are mounted, and a reversing mechanism for reversing the table up and down,
Lock means for fixing the vibration table to the reversal table at the time of reversal and releasing the fixation at the time of vibration;
The manufacturing apparatus of the concrete block of Claim 1 or 2 provided with these. A material supply unit having a material charging hopper of uncured concrete, and a hopper feeder capable of transporting this hopper directly above the molding frame mounted on the vibration table;
Leveling means for leveling the upper surface of the uncured concrete in the material charging hopper substantially flush with each other;
The manufacturing apparatus of the concrete block in any one of Claims 1-3 provided with these.   The concrete block manufacturing apparatus according to any one of claims 1 to 4, further comprising an embedding unit for embedding and positioning an embedding member with respect to uncured concrete inside the molding form from outside.   The concrete block manufacturing apparatus according to claim 5, wherein the embedded member is formed of a cylindrical body having a hole portion in which an inner space portion gradually increases toward an inner side of the concrete.   A demolding table for receiving the molding frame that has been inverted with the upper end opening closed by the blocking plate, and lowering the demolding table to a height equal to or higher than the cross-sectional height of the molding frame to remove uncured concrete. The apparatus for producing a concrete block according to any one of claims 1 to 6, further comprising a lowering means for removing the mold from the mold. The molding form consists of a guide frame fixed to the upper surface of the vibration table before reversal, and an inner form frame inserted through the guide frame so as to be movable up and down.
The concrete block manufacturing apparatus according to claim 7, wherein extraction means for extracting the inner mold frame downward from the guide frame in synchronization with the lowering of the mold release table is provided on the vibration table.

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