JPH0247004A - Device and method of manufacturing ready-made concrete product - Google Patents

Abstract

PURPOSE: To manufacture a plurality of precast concrete products by rotatably mounting in a supporting frame, raising a mold tray to remove a molded concrete product, and inverting it upside down. CONSTITUTION: The molding machine 10 has a rectangular base 12 supported by a frame 14. A plurality of mold gaps are formed as constituents of a mold tray 15. A hopper is moved across an upper part of the mold, and concrete is distributed until the gaps are fully filled. A ready mixed concrete is vibrated to remove an air pocket in the mold, and then cured. After the concrete is cured, a holding means 18 is fixed onto a cured concrete product, the tray is raised to a high position, and rotated to a position inverted by manually or mechanical means. The inverted tray is suspended to be placed on the means 28 upside down, and the molding means is removed, and the molded concrete is released. The base is removed from the product, and this process is repeated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a casting technique for molded concrete products. More particularly, the present invention relates to an apparatus and method that provides a convenient means for making multiple molded products at one time and removing the final products from their molds.

[Conventional technology]

Concrete products such as bollard curbs, railroad ties, fence posts and patio flocking are typically made in molds that are large and cumbersome to handle. Molded articles are typically made in multi-cavity molds that sometimes require one or at least two workers and additional heavy equipment to lift and invert the mold to remove the cured product. It will be done. There is no single device for sale that can form multiple concrete products and yet provide both a means for vibration and a means for removing the final formed product.

For example, Gaudelli et al. in U.S. Pat. It can be easily removed by suspending the entire mold bed and molded product and turning the mold bed upside down so that the molded part is released by gravity. This type of device is associated with some drawbacks. First, the mold bed when filled with concrete is very heavy and requires at least two people or a forklift to lift it onto a pedestal before inverting it. Furthermore, if it is desired to vibrate the entire mix after pouring the fresh concrete into the mold, it is necessary to install a separate vibrating device. Also, the mold bed of Gopri et al. lacks flexibility as it can only be used for elongated products such as concrete spacers used in parking lots.

Bratchell's U.S. Patent No. 1L
No. D58555 discloses a number of molds with a tilting device that lifts one side of the mold, pivots the mold about its longitudinal axis, lowers the mold, and inverts the mold to release the concrete sleepers formed therein. It teaches you how to combine.

There are some drawbacks associated with the production method disclosed in the Brachell patent. First, to use tilt formwork effectively,
For example, additional heavy machinery is required, such as attaching a separate vibration device to the hopper filled with fresh concrete. Second, a forklift truck must be used to support the filled mold prior to the lifting and tilting steps. In addition, in order to lift the formwork containing the formed concrete sleepers, it is necessary to have a hoisting device attached to the crane. As is clear from the above review of the prior art, what is needed is multiple molded concrete systems that incorporate all the equipment necessary to make the product in a single device that can be operated by only one person with minimal effort. It is a device that can manufacture products.

[Invention tries to solve it! 19) The main object of the invention is to provide a device for making a plurality of ready-made concrete products in mold trays of various types, which can be operated by a single person.

Yet another object is to provide an apparatus fitted with vibration means for vibrating a mold tray containing fresh concrete.

Another object of the invention is an apparatus for accommodating formwork or form trays of a plurality of different dimensions, incorporating lifting means so that external hoisting equipment or forklifts are not required to remove the formed concrete product. The purpose is to provide equipment.

Yet another object is to provide an apparatus having a shaking table capable of mounting a variety of patterns including, but not limited to, curbs, patio blocks, fence posts, and railroad ties.

Another object is to provide a mobile device with large retractable wheels that allows the production of concrete products to be carried out either indoors or outdoors or indeed at the work site.

It is another object of the present invention to provide a method and apparatus for making formed concrete products that is more efficient, less expensive, and ultimately reduces the cost of the product per unit.

[Means to solve the problem]

Briefly, one device of the invention comprises a substantially rectangular platform having two side edges, a leading edge, a trailing edge, a top surface and a bottom surface, and a platform placed on top of said platform as an integral component of the platform itself. or a plurality of molds formed either as a series of individually formed components or as a mold tray, removably placed on the top of said platform.

The support frame of this device includes two rhombic beams placed along each side edge of the platform and in substantially parallel relation to the platform. Each dovetail beam has at least two inwardly projecting support beams or arms attached to said horizontal member for supporting a rearwardly located vertically extending member, a horizontally extending member and said platform. There is a means.

The L-shaped beams are connected by two connecting beams, the first beam connecting the vertical members at the top and the second beam connecting the vertical members at the bottom. A telescoping arm means for lifting and inverting the mold tray and/or platform is removably attached to the mold tray and/or the mold tray. Also, at least one motor-operated vibration device is attached to the bottom of the platform.

There are also removable retaining means for temporarily retaining the formed concrete product in the mold tray when the mold tray is in its inverted position prior to removal.

Briefly, the method for making multiple concrete products includes the following steps.

(1) supported by a frame having a plurality of inwardly projecting hinged support arms and hydraulically controlled to lift and invert either the platform or form tray to remove the formed concrete product; (2) providing a form tray having a plurality of formworks on a substantially rectangular platform associated with the lifting device and on which a vibrating means is attached; (2) attaching the vibrating means to the platform; (3) applying fresh concrete to the platform; The process of making.

(11) Process of pouring fresh concrete into the mold, (5
) placing retaining means across the top of the mold for temporary fixation before removing the molded product in the mold when the platform is in its inverted position; (6) fine and heavy particles in the uncured mixture; - vibrating the platform and the uncured mixture in the mold in order to sieve it to the bottom of the mold and eliminate all voids; (7) curing the fresh concrete; (8) using a hydraulically controlled lifting device; (9) inverting the mold tray; and (10) raising the hinged support arm upwardly and outwardly.

(11) lowering the mold tray until the holding means rests on the stand; (12) removing the holding means; and (13) lifting the mold tray to leave the formed concrete product on the stand.

〔Example〕

Referring in detail to the drawings, one embodiment of a forming apparatus 10 is shown in FIG. In this embodiment, the molding apparatus 10 includes a rectangular vibration table 12 attached to a frame ill.

The platform 12 has side edges 16, a leading edge 18, a trailing edge 20, and, in the embodiment shown in FIG.
A mold tray 13 is provided which has a bottom surface 22 which also functions as a 1+ bottom. The mold cavity 211 is.

In an alternative embodiment it is formed as an integral component of the mold tray 13 by inserting and fixing walls or partitions 26 and 27 extending longitudinally and laterally within the mold tray 13, respectively. The platform 12 is manufactured separately as a flat surface so that individual mold trays can be placed on top of the platform. This allows the apparatus of the present invention to be used for casting various shaped concrete products. For example, a tray having a plurality of rectangular mold cavities similar to those that make up the rainwater splash block shown in FIG. It can be fixed by any suitable means.

Returning to the embodiment of FIG. 1, two or more retaining bars 28 or other conventional means, such as a wire sieve screen, are typically placed across the top of the mold cavity 24 to hold the trailing edge 2 in the mold tray.
It is fixed to two brackets that are fixed at the front edge 0 and 1g. The retaining bar 28 is provided with a threaded hole 51 that receives a screw member that is turned into position by a wheel crank 55. Although the primary function of the retaining bar 2g is to temporarily secure the formed concrete product in the mold when the mold tray is inverted to remove the hardened product, the retaining bar is also shown in FIG. As such, it may also serve to maintain individually configured molds in place when mounted across the mold tray. Depending on the formwork used, it may be necessary to vary the number and placement of retaining bars 28.

The frame 11i fully supports the platform 12 and is comprised of two L-shaped beams 30, one L-shaped beam 30 located along each side edge of the platform 12 in a substantially parallel relationship. Each beam 30 has a rearwardly located vertically extending member 52 and a horizontally extending member 54. At least two inwardly projecting support beams 56 are attached to each rounded beam 50 to support the vibrator box 50 above the base 12 metal ground.
The vibrator (not shown) surrounded by
, allowing them to vibrate freely without touching the ground. The platform block lI3 is.

It is attached to the bottom surface 40 of the stand 12 and serves to support the twelve-carat gold map at an appropriate height above the table.

Suitable connection means, such as bolts or pins 45 shown in FIG. 1, are used between block 43 and platform 12 to maintain proper positioning of the platform. The L-shaped beam 50 is connected by two connecting beams.

The first connecting beam 142 extends between the upper parts of the two vertical members 52 and the second connecting beam 1111 extends between the lower parts of the two vertical members 2.

Frame Structure 1 = Additional connecting beams may be added if additional reinforcement is desired.

The stand 12 and the mold tray 13 are connected to the vertical member 5 of the L-shaped beam 50.
The installation fixed to 2 is on the 4th floor of the box! selectively connected to a hydraulically controlled lifting device consisting of an electric motor 116 mounted on the. Two telescoping or pup lifting arm means 50 are pivotally attached to the first connecting beam 112 at one end. The lifting arm generally includes a first or outer portion 51 and an inner portion 55 into which the puppy is received. The free end of the inner portion 55 of the lifting arm is formed with a groove 70 therein which receives a laterally projecting bin or protrusion 72 extending from the side edge of the mold tray 13. Shaking table 12 also includes a jar or protrusion 74'z projecting laterally from each side edge thereof.

Each lifting arm 50, when actuated by the electric motor 46, then, as shown in FIGS. 2 and 5,
It is attached to a hydraulic cylinder 52 that raises the mold tray 13 or platform 12 to a high position.

The height reached must be sufficient to allow the mold tray 13 or platform 12 to make 180 revolutions.

Inversion of the mold tray or platform is typically accomplished by grasping the side edges and manually rotating the member 180 degrees. Rotation can be facilitated by attaching control wheels (not shown) to the side edges or by adding a second hydraulic device.

The telescoping arm means 50 greatly enhances the flexibility of the present invention by allowing the apparatus to accommodate mold trays of varying lengths.

In some cases, particularly when forming fence posts for soundproofing on site, it is convenient to be able to move the apparatus 10 as construction progresses. For purposes of construction, a large retractable wheel (not shown) can be attached to the T-L beam 50 at its outer end. Such wheels also provide an easy means of moving the device 10 indoors or outdoors depending on the weather.

Next, referring to a method for making a ready-made concrete block, the following steps describe a method for making the product using the forming apparatus 10 shown in FIG.

In this embodiment, the molding apparatus includes a rectangular platform 12 supported by a frame 114. The plurality of mold cavities illustrated in FIG. The trailing edge 20 forms one side of the rear mold cavity 24 . Sidewalls 26 are inserted at equal intervals therebetween to form the desired plurality of voids.

A hopper (not shown) is provided and filled with concrete, and the hopper moves across the top of the mold to dispense the concrete until the mold voids are filled.

The vibrator motor ++1 shown in Fig. 5 is installed in box II8.
activated by an on-off switch mounted on the The fresh concrete is shaken in the mold for about 5 minutes to settle out heavy fine particles and remove any air pockets trapped therein.

After the shaking step, reinforcing bars may be added and the concrete is generally allowed to harden overnight.

After the concrete has hardened, retaining means are secured over the hardened concrete product and the mold tray 13 is raised to a raised position as shown in FIG. is rotated to the inverted position by means of. The inverted tray is first lowered upside down onto the holding means 28 and then the holding means is removed to release the shaped concrete product. The mold tray is
It is lifted again, leaving the finished product on the platform 12. Next, remove the finished product from the platform by inserting a fork between the beams 28 and repeating the process.

The device can be used continuously with replaceable interlocking sculpting trays, the filled trays being removed by a forklift or similar means and set aside for opening where new trays are filled. It will be destroyed. The protrusion 7II attached to the valve 12 also allows the platform to be inverted in the same manner as the mold tray, as shown in FIG. 5, for cleaning or maintenance of vibrating motors, shafts, etc.

〔Effect of the invention〕

The apparatus for producing ready-made concrete products according to the present invention is as follows.

With the structure explained above, one person can perform the work from casting multiple concrete forms to removing the products from the molds, and since the molds can be changed, various products can be handled with the same equipment. It can also be made mobile by adding wheels and can be used at the product application site.

By using this device, the price of formed concrete products can be reduced, so the device of the present invention has great practical effects.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the concrete forming apparatus. Is the second figure a mold stand? 1 is a side view of the present device shown in a vertically raised position; FIG. Figure i3 is a perspective view of the apparatus showing the shaking table in an inverted and raised position for cleaning or maintenance. 12-1 unit, 13-1 type tray, 28-1 holding pa 3O-
- L-shaped beam, 50-- one lifting means;

Claims (1)

[Claims] 1. a) A platform having two side edges, a leading edge, a trailing edge, a top surface and a bottom surface, and a piece of concrete placed on the top surface of said platform, each defined by a side wall and a bottom surface. b) vibrating means for vibrating said platform and said plurality of molds; c) lifting and inverting said mold tray and said plurality of molds to remove the formed concrete product; d) removable retaining means for temporarily securing the formed concrete products in the mold before removal when said mold tray is in an inverted position; and e) a plurality of precast concrete products comprising a support frame. equipment for making. 2. The plurality of molds comprises individually molded components removably attached to the top surface of the platform.
Equipment for making multiple ready-made concrete products as described in . 3. Apparatus for making a plurality of ready-made concrete products according to claim 1, wherein said vibrating means comprises at least one motor-operated vibrator mounted on the bottom of said platform. 4. The support frame comprises two L-shaped beams, one of the L-shaped beams being placed in parallel relation to the platform along each side edge of the platform, each L-shaped beam being located at the rear. a vertically extending member; a horizontally extending member; at least two inwardly projecting support arm means attached to said horizontal member; and two connecting beams, the first connecting beam being connected to said vertically extending member. Apparatus for making a plurality of ready-made concrete products according to claim 1, wherein the members are connected at the top and a second connecting beam connects the vertical members at the bottom. 5. said lifting means having a pair of arms, each arm having an outer portion and an inner portion telescopically received within said outer portion and extendable from said outer portion; a pair of arms extending between an upper connecting beam of the support frame and approximately the center of each side edge of the mold tray and platform, the arms being pivotally mounted at both ends; An apparatus for making a plurality of ready-made concrete products according to item 4. 6. The apparatus for making a plurality of prefabricated concrete products as claimed in claim 5, wherein said lifting means further comprises a hydraulically controlled lifting device with one hydraulic cylinder attached to each arm. 7. said removable retaining means comprising at least two retaining bars extending across said mold between leading and trailing edges of said mold tray; and means for attaching said retaining means to said mold tray; An apparatus for making a plurality of ready-made concrete products according to claim 1. 8. The apparatus for making multiple ready-made concrete products according to claim 7, further comprising an end insert for making shaped products of various lengths. 9. The apparatus for making a plurality of ready-made concrete products according to claim 1, further comprising a formed concrete product having at least one elongated reinforcing bar inserted therein. 10. The apparatus for making ready-made concrete products as claimed in claim 1, further comprising a support frame having a plurality of wheels to facilitate moving the apparatus for making ready-made concrete products to any desired location. 11.a) A mold tray disposed on a platform supported by a frame and selectively attached to a hydraulically controlled lifting device for lifting and inverting the mold tray to remove the formed concrete product. providing a plurality of molds in a tray; b) attaching a vibration means to the stand; c) forming ready-mixed concrete; d) pouring the ready-mixed concrete into the mold; e) above the mold. f) vibrating the fresh concrete in the platform and the mold; g) curing the fresh concrete; h) lifting the mold tray with the hydraulically controlled lifting device; lifting, i) inverting the mold tray; J) lowering the mold tray until the holding means rest on the platform; k) removing the holding means; and l) raising the mold tray. , a process of leaving the formed concrete product on a table; 12. The method of making a plurality of concrete products according to claim 11, further comprising the step of suspending reinforcing bars in the fresh concrete immediately after pouring the fresh concrete into the mold. 13.a) A mold tray disposed on a platform supported by a frame and selectively attached to a hydraulically controlled lifting device for lifting and inverting the mold tray to remove the formed concrete product. providing a plurality of molds in a mold tray; b) attaching a vibrating means to the stand; c) forming ready-mixed concrete; d) pouring the ready-mixed concrete into the mold; e) placing the stand and vibrating the fresh concrete in the mold; f) curing the fresh concrete; g) applying holding means across the top of the mold; h) lifting the mold tray with the hydraulically controlled lifting device. i) inverting the mold tray; j) lowering the mold tray until the holding means rests on the platform; k) removing the holding means; and l) raising the mold tray. A method of making a plurality of concrete products, comprising the step of: leaving the formed concrete product on a table; 14. a) a support frame; b) a platform having two side edges, a leading edge, a trailing edge, a top surface and a bottom surface; c) a cavity placed on the top surface of said platform and defined by the side walls and the bottom to receive concrete; d) vibration means mounted on said platform and operative in conjunction with said platform to vibrate said platform and a plurality of mold cavities; e) vibrating means pivotally mounted on said support frame and configured to form concrete; means for lifting and inverting said mold tray and a plurality of mold cavities to remove product, each having a pair of opposite ends and pivotally mounted at one end on each of said side edges of said platform; motorized lifting means comprising a pair of arm means pivotably mounted on said support frame at opposite ends, and further comprising means for raising said arm means; f) when the mold tray is in an inverted position; a plurality of ready-made concrete products, comprising: removable holding means for temporarily fixing the formed concrete products in the voids before removal; and g) control means mounted on said support frame and actuating said vibration means and lifting means. equipment for making.