JPH06194281A - Cement paste removing apparatus for concrete specimen form - Google Patents

Abstract

PURPOSE:To efficiently remove cement paste adhered to the end face of a form. CONSTITUTION:A plurality of protruding teeth 19 are provided on the push- contact surface 16 of a rotatable table 15. A motor 21 for rotating the table 15 is provided. The table 15 is rotated by the motor 21, and the upper end face 18 of a divided side plate 1 of a form K is brought into contact with the surface 16 of the rotating table 15. Adhered cement paste P can be efficiently removed in a short time by the teeth 1 provided on the surface 16.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for removing cement paste from a mold used for manufacturing concrete strength test specimens, and more particularly to a cement paste that adheres to the end face of the mold by capping during the manufacture of the specimen. The present invention relates to a cement paste removing device for a concrete sample form to be removed.

[0002]

2. Description of the Related Art Specimens used for compressive strength tests, tensile strength tests, etc. of concrete are manufactured by using a metal mold having a bottomed tubular shape, and the specimens are manufactured according to Japanese Industrial Standards (JISA 1132). ) Has been defined as a cylindrical shape having a height twice as large as the diameter, and the mold for manufacturing the test piece has, for example, a diameter of 10 cm and a height of 20 cm,
A diameter of 12.5 cm and a height of 25 cm are used. For example, as shown in FIG. 18, a mold K for manufacturing the test piece is made of metal, for example, a casting, which includes a pair of split side plates 1 and 1 that vertically divides a cylindrical tube portion and a bottom plate 2. The split side plate 1 is provided with joint portions 3 on the upper, lower, left, and right sides thereof, and the bottom plate 2 is provided with flange portions 4 on the left and right sides, respectively.
A fastener 5 is rotatably attached to the joint portion 3 and the flange portion 4, engages a butting portion 6 of the left and right divided side plates 1, 1 with each other, and engages a step portion 7 of the lid 2 with a lower end opening. And tightening tool 5
Allows assembly and disassembly. Further, in addition to the one in which the tubular portion is divided, a form made up of a cylindrical tubular portion and a bottom plate is also used. By the way, in the manufacture of a specimen, so-called capping using cement paste is performed for finishing the upper end surface of the specimen so that a load is accurately applied along the axis of the specimen when a compressive strength test is performed. In this capping work, cement paste is filled in the upper part of the mold K, and a compression plate made of a smooth glass plate or the like is covered on the cement paste,
The surplus cement paste is scraped off so that the upper end surface of the specimen is finished smooth. However, as shown in FIG. 19, the cement paste P used by the capping operation is hardened and adhered to the upper end surface 8 of the mold K in a thin layer, and the peripheral surface 8 of the upper end rib portion 8 is formed.
Since it also adheres to A and cannot be used for the next production of the specimen as it is, an operator uses a metal spatula or a hammer to remove the adhered cement paste P.

[0003]

SUMMARY OF THE INVENTION In the above conventional method,
An operator removes the cement paste P attached by using a metal spatula or a hammer, but since the cement paste P is a thin layer and has a larger adhesive force than concrete, it takes time to remove it. There was a problem of poor workability.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a cement paste removing device for a concrete specimen formwork capable of efficiently removing the cement paste attached to the end face of the formwork.

[0005]

An apparatus according to claim 1 of the present invention is a removing device for removing cement paste adhering to an end surface of a concrete specimen formwork, which is a rotatable table and one of the tables. It is provided with a pressing surface which is provided on a side plane and which presses the end surface of the mold, a plurality of protruding teeth provided on the pressing surface, and a rotation driving means which rotates the table.

A guide member that engages with the inner surface of the frame is provided.

Further, in the apparatus of claim 3 of the present invention, an idle shaft is provided at the center of the table, and a guide cylinder which engages with the inner surface of the mold is detachably provided on the idle shaft. It is a thing.

[0008]

In the structure of the above-mentioned claim 1, when the table is rotated by the rotation driving means and the end face of the form is pressed against the pressing surface of the rotating table, the plurality of projecting teeth provided on the pressing surface cause The cement paste that has adhered can be scraped off.

According to the second aspect of the present invention, the inner surface of the mold can be aligned with the guide member and the end surface of the mold can be evenly pressed against the pressing surface.

Further, according to the third aspect of the present invention, the end surface of the mold can be pressed uniformly against the pressing surface along the guide cylinder by the surface contact between the outer surface of the guide cylinder and the inner surface of the mold.

[0011]

Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 to 3 show a first embodiment of the present invention, in which the same parts as those of the above-mentioned conventional example are designated by the same reference numerals and detailed description thereof will be omitted. At the upper part of 11, the base plate 12 is installed obliquely downward to the front,
A bearing 13 capable of supporting the thrust direction is provided on the front side of the base plate 12, and a rotary shaft 14 is rotatably provided through the bearing 13, and a disc-shaped disc made of metal is provided above the rotary shaft 14. The table 15 is provided, and the upper surface of the table 15 constitutes a pressing surface 16 against which the upper end surface 8 of the mold K is pressed. This pressing surface 16 has a square shape 12
The toothed tips 17 are radially attached via bolts 18, and the toothed tips 17 are made of a material having excellent durability and abrasion resistance, such as a hard carbide material,
A plurality of protruding teeth 19 having a substantially quadrangular pyramid shape and a flat surface 19A at the tip are aligned on the upper surface, and each protruding tooth 19 has a square of about 3 mm square and a height of about 1 mm. The angle of the inclined surface is approximately 45 degrees. Further, four metal brushes 35 are planted at equal intervals between the toothed chips 17. Further, around the pressing surface 16 of the table 15, a plurality of arc-shaped inner teeth 20 are vertically installed at equal intervals around the rotation shaft 14, and at least inner corner portions of the inner teeth 20 are hardened. Etc., it is processed to a predetermined hardness. Further, on the rear side of the base plate 12, a motor 21 with a speed reducer, which is a rotary drive device, is attached, and a drive pulley 23 is fixed to a motor shaft 22 of the motor 21, and the drive pulley 23 and the rotary shaft 22 are attached. Drive belt with driven pulley 24
25 is mounted, and the table is rotated by the rotation of the motor 21.
15 is designed to rotate. A pair of left and right mounting boss portions 26, 26 are provided upright on the front side of the base plate 12, and a mounting plate 27 is installed between the boss portions 26, 26.
A front end side of a guide member 28 having a substantially L-shaped longitudinal section is fixed to the center of 27. The guide member 28 is spaced from the table 15 at the rear end thereof and has a pressing surface of the table 12.
16 has a plate-shaped guide piece 29 perpendicular to this.
Curved engagement surfaces 30 are formed on the left and right end surfaces of the so as to engage with the inner surface of the mold K. Further, on the front surface of the machine frame 11, there is a bottomed box-shaped drawer 31 having an upper opening.
Is provided and can be taken out from the inside of the machine frame 11 by a handle 32 provided on the front surface. Further, an opening 33 for discharging cement waste is provided in the base plate 12 on the left and right of the plane of the guide piece 29, and the cement waste dropped from the opening 33 is stored in the drawer 31. It has become so. Further, in FIG. 2, the divided side plate 1 of the mold K having an inner diameter of 10 cm is shown by a solid line, and the mold K having a diameter of 12.5 cm is shown.
The divided side plate 1A of is shown by the alternate long and short dash line, and as shown in FIG.
The toothed tips 17 are arranged so as to be adjacent to each other on the peripheral side of the table 15 so as to correspond to the upper end surfaces 8 of the divided side plates 1 and 1A.

The method of using the cement paste removing device will be described below. First, the motor 21 is driven by a switch (not shown) to rotate the table 15. Then, the operator holds the split side plate 1 vertically and rotates the table 15
When the upper end surface 8 of the divided side plate 1 is pressed against the pressing surface 16 of
The projecting teeth 19 of the toothed tip 17 scrape off the cement paste P that has adhered, and scraps of this paste P drop from the opening 33 into the lower drawer 31. Further, when the upper end surface 8 of the divided side plate 1 is pressed against the toothed tip 17, the worker scrapes off the paste P by pressing the inner surface of the divided side plate 1 against the guide piece 29 as shown in FIG. Because the divided side plate 1 does not shift its position due to resistance at the time, stable pressing work can be performed, and the upper end surface 8 can be pressed in parallel with the pressing surface 16, so that the upper end surface 8 The attached paste P can be scraped off evenly and evenly. Further, the peripheral surface 8 of the upper end rib portion of the divided side plate 1
When removing the cement paste P adhering to A, as shown in FIG. 3, when the peripheral surface 8A is pressed against the inner teeth 20, the cement paste P adhering to the corners of the inner teeth 20 is scraped off.

As described above, in this embodiment, the rotatable table 15, the pressing surface 16 on one side of the table 15 for pressing the end surface of the form K, and the pressing surface 16 are provided. Since it is provided with a plurality of protruding teeth 19 and a motor 21 as a rotation driving means for rotating the table 15,
When the table 15 is rotated by the motor 21 and the upper surface 8 of the form K is pressed against the pressing surface 16 of the rotating table 15,
By the plurality of projecting teeth 19 provided on the pressing surface 16, the attached cement paste P can be efficiently removed in a short time.

As described above, in this embodiment, since the guide member 28 that engages with the inner surface of the mold K is provided at a distance from the pressing surface 16 of the table 15, the divided side plate 1 that is pressed against the divided side plate 1 is pressed. Does not cause positional displacement, and stable pressing work can be performed, and since the upper end surface 8 can be pressed in parallel with the pressing surface 16, the paste P attached to the upper end surface 8 is evenly distributed. It can be scraped off and work time can be shortened.

Further, as an effect of the embodiment, by forming the flat surface 19A at the tips of the projecting teeth 19, only the cement paste P can be scraped off without damaging the form K, and the projecting teeth are also possible. The table 15 can be smoothly rotated by pressing the upper end surface 8 of the divided side plate 1 as compared with the case where the table 19 is sharp. Further, by providing the table 35 with the brush 35, it is possible to effectively remove the shavings of the cement paste P adhering to the upper end surface 8, and further, a plurality of internal parts are provided around the pressing surface 16 of the table 15. By vertically arranging the teeth 20 at equal intervals, the inner teeth 20 allow the peripheral surface 8 of the split side plate 1 to be formed.
The cement paste P attached to A can also be easily removed. Furthermore, since the table 15 is obliquely installed, the worker can hold the split side plate 1 and press it against the table 15 in a comfortable and easy posture. Further, since the engaging surface 30 of the guide piece 29 is formed in a curved shape, it can be pressed smoothly without damaging the inner surfaces of the divided side plates 1, 1A. Further, the toothed tip 17 having a rectangular shape in a plane is arranged so as to be adjacent to the peripheral side of the table 15 so as to correspond to the upper end surfaces 8 of the divided side plates 1 and 1A, thereby using the toothed tip 17 The amount can be suppressed, and the cement paste P of the divided side plates 1 and 1A of different sizes can be efficiently removed by using the toothed tip 17 having a small area. Moreover, since the toothed tip 17 can be removed by the bolt 18, the toothed tip 17 can be replaced together with the protruding tooth 19 when it wears.

FIG. 4 shows a second embodiment of the present invention, in which the same parts as those in the first embodiment are designated by the same reference numerals and detailed description thereof will be omitted. 16
In, showing an example in which the toothed tip 17 forming a planar rectangle is radially attached, in this way, the toothed tip 17, that is, the arrangement of the protruding teeth 19 on the pressing surface 16 can be appropriately selected, and in this example The shavings of the cement paste P fall between the teeth 17 and the table 15 from between the inner teeth 20.
Good discharge out of the.

FIGS. 5 to 8 show a third embodiment of the present invention. The same parts as those of the first embodiment are designated by the same reference numerals and detailed description thereof will be omitted.
A modified example of A is shown. A plurality of radially long projecting teeth 34 are integrally formed with the table 15A on the pressing surface 16 of the table 15A made of metal, and a position between the projecting teeth 34 is provided. And four brush mounting grooves 35A are formed at equal intervals,
A metal brush 35 is erected in the mounting groove 35A, and a tapered opening 35B is formed in the upper portion of the mounting groove 35A. Further, as shown in FIG. 7, the projecting teeth 34 have a flat surface at the tip of the vertical surface 36 and the inclined surface 36 inclined at 45 degrees.
34A, each of the projecting teeth 34 is provided with the inclined surface 36 side facing in the rotation direction Y. The protruding teeth 34 and the inner teeth 20 are processed to have a predetermined hardness by quenching or the like.

When the motor 21 is driven to rotate the table 15A in the rotation direction Y of FIG. 7, the cement paste P adhering to the upper end surface 8 is scraped off by the protruding teeth 34, and the metal brush 35 is used. Scraped off, while surface 8
When A is pressed against the inner teeth 20, the cement paste P adhering to the peripheral surface 8A can be scraped off, and scraps of the paste P are discharged from the outer peripheral portion of the tapered opening 35B to the outside. The table 15A can be rotated in the direction opposite to the rotation direction Y, but it is better that the table 15A rotates so that the inclined surface 37 side of the protruding teeth 34 moves forward even if the upper end surface 8 is pressed, and The cement paste P can be scraped off efficiently.

As described above, in the present embodiment, the rotatable table 15A, the pressing surface 16 provided on one flat surface of the table 15A for pressing the end surface of the form K, and the pressing surface.
Since it is provided with a plurality of projecting teeth 34 provided on 16 and the motor 21 which is a rotation driving means for rotating the table 15A, the table 21A is rotated by the motor 21 and the pressing surface of the rotating table 15A. When the upper end surface 8 of the split side plate 1 is pressed against the 16 side, the plurality of projecting teeth 34 provided on the pressing surface 16 can efficiently remove the adhered cement paste P in a short time. Since the upper end surface 8 of the divided side plate 1 can be evenly pressed against the pressing surface 16 by aligning 1 with the guide member, the cement paste P can be uniformly removed.

Further, as an effect of the embodiment, by providing the brush 35 on the table 15, the shavings of the cement paste P adhering to the upper end surface 8 can be effectively removed. From the tapered opening 35B of
The shavings of the cement paste P can be satisfactorily discharged to the outside of the table 15A.

10 to 16 show a fourth embodiment of the present invention, in which the same parts as those in the first embodiment are designated by the same reference numerals and detailed description thereof will be omitted.
And, as shown in FIG. 11, the table 13B by the bearing 13A.
A rotary cylinder 41 that is perpendicular to the rotary cylinder 41 is rotatably provided. The upper part of the rotary cylinder 41 is fixed to the lower surface of the table 15B, and the driven pulley 24 is fixed to the lower end of the rotary cylinder 41. Is transmitted to the table 15B via the transmission belt 25, the driven pulley 24, and the rotary cylinder 41. Further, bearings 42 and 42 are provided above and below the rotary cylinder 41, and a free rotation shaft 43 is provided through the bearings 42 and 42 so as to freely rotate.
Is projectingly provided at the center of the table 15B, and a receiving flange 44 is fixed to the pressing surface 16 of the table 15B at a distance. A guide cylinder 15C is provided at the center of the table 15B, and the idle shaft 43 is freely rotatably inserted into the guide cylinder 15C. Reference numerals 45 and 45A denote guide cylinders detachably provided on the idle shaft 43.
5, 45A are made of synthetic resin such as hard nylon, and the outer diameter of one guide cylinder 45 is approximately 10 cm or slightly smaller than the inner diameter of the mold K, and the other guide cylinder 45A The outer diameter of the guide cylinder 4 is formed to be approximately 12.5 cm or slightly smaller.
Each form K is slidable up and down along 5, 45A, and an insertion hole 46 into which the idle shaft 43 is inserted is vertically provided at the center of the guide cylinders 45, 45A.

Further, in this example, radial projecting teeth 47 are integrally formed on the pressing surface 16 of the table 15B, and the projecting teeth 47 are shown in the plan view of FIG. 13 and the sectional view of FIG. As described above, the vertical surface 36 and the inclined surface 37 are provided, and the tooth tips 48 and the valleys 49 are formed radially, and as shown in the sectional view of FIG. Are parallel to each other, and the valleys 49 are formed so as to be lowered toward the outer circumference. Then, a separate ring portion 50 is fixed to the outer periphery of the table 15B, the inner teeth 20 are provided on the ring portion 50, and the valley portion 49 is located in a gap 51 between the inner teeth 20. It is provided. In addition, an inclined inner surface 20A is provided substantially at the center in the height direction of the inner tooth 20. Further, four openings 52 are provided in the center of the table 15B for discharging cement waste. In addition, 10 in the figure
1 is the cylindrical part of the form K with an inside diameter of 10 cm, 102 is the inside diameter 1
It is a cylindrical part of the form K of 2.5 cm.

Then, the motor 21 is driven to rotate the table 15B in the rotation direction Y of FIG. 14, and the operator guides the inner surface of the divided side plate 1 having an inner diameter of 10 cm from the motor 21 side to the guide cylinder 45.
When the divided side plate 1 is pressed against the pressing surface 16 of the table 15B along the guide cylindrical body 45 as it is, the cement paste P adhering to the upper end surface 8 is scraped off by the protruding teeth 47, and the metal It is scraped off by the brush 35. In this case, the idle shaft 43 guides the guide cylinder 45.
Does not rotate, the operator can comfortably hold the divided side plate 1 along the guide cylindrical body 45 and evenly press it, and the outer circumference of the guide cylindrical body 45 is centered around the idle shaft 43. Since it forms a concentric circle with the table 15B, the upper end surface 8 is pressed against the protruding teeth 47 in parallel, whereby the split side plate 1
The cement paste P adhering to the upper end surface 8 of the is uniformly scraped off by the radial protruding teeth 47. Further, the scraps of the paste P fall on the inclined surface 37 and collect in the valleys 49, and the rotation of the table 15B causes the table 15 to follow the inclination of the valleys 49.
It is blown to the outer peripheral side of B and discharged from the gap 51 of the inner teeth 20 to the outside. When using side plates 1A having different sizes, for example, an inner diameter of 12.5 cm, a guide cylinder 45A having an outer diameter of 12.5 cm is attached to the idle shaft 43 and the cement paste P attached to the divided side plates 1A. To remove. Furthermore, FIG.
Also when using the cylinder parts 101 and 102 of the form shown in FIG. 2, the guide cylinders 45 and 45A having outer diameters substantially the same as the inner diameters of these cylinder parts 101 and 102 are mounted on the idle shaft 43. The paste P is removed. On the other hand, similarly to the first embodiment, when the peripheral surface 8A is pressed against the internal teeth 20 while the divided side plates 1 and 1A are inclined, the cement paste P adhered to the peripheral surface 8A.
In the case of the cylinder parts 101 and 102, the guide cylinders 45 and 45A are removed from the idle shaft 43, and the peripheral surfaces thereof are pressed against the internal teeth 20 to cement the peripheral surfaces. The paste P can be scraped off.

As described above, in this embodiment, the rotatable table 15B, the pressing surface 16 that is provided on one flat surface of the table 15B and presses the end surface of the form K, and the pressing surface.
The table 15 is provided with a plurality of projecting teeth 47 provided on the table 16 and a motor 21 as a rotation driving means for rotating the table 15B.
The idle shaft 43 is provided at the center of B, and the form K is
Since the guide cylinders 45, 45A that engage with the inner surface of the guide cylinder are detachably provided, the split side plates 1, 1A are provided as guide cylinders.
It is possible to move along 45, 45A and evenly press the upper end surface 8 against the projecting teeth 47, and in particular, the inner surface of the divided side plates 1, 1A and the outer surface of the guide cylinders 45, 45A are in surface contact. Thereby, since the divided side plates 1 and 1A can be positioned stably, the paste P attached to the upper end surface 8 can be reliably and uniformly removed. Further, since the guide cylinders 45 and 45A having different outer diameters can be selectively mounted via the idle shaft 43, the divided side plates 1 and 1A can be respectively positioned at the concentric positions of the table 15B. Further, since the guide cylinders 45, 45A can be provided at the center position of the table 15B via the idle shaft 43, the paste P of the form K having the integral cylinder parts 101, 102 can be easily removed. be able to.

Further, as an effect of the embodiment, the valley portion 49 of the projecting tooth 47 is formed so as to become lower toward the outer periphery of the table 15B, and the gap 51 of the internal tooth 20 is arranged at the position of the valley portion 49. From the above, the waste of the paste P falls on the inclined surface 37 and collects in the valley portion 49, and is blown to the outer peripheral side of the table 15B along the inclination of the valley portion 49 by the rotation of the table 15B, and from the gap 51 of the internal teeth 20. Good discharge to the outside.

FIG. 17 shows a fifth embodiment of the present invention, in which the same parts as those in the first embodiment are designated by the same reference numerals and detailed description thereof will be omitted. Using a guide member 61 that engages with, a slide member 62 is attached to the attachment plate 27 so as to be slidable in the front-rear direction in the figure.
A pair of long holes 63 are formed in the slide member 62, and the slide member 62 is attached to the mounting plate 27 via bolts 64 inserted into the long holes 63, and is slid back and forth in the figure by the length of the long holes 63. It is fixed to the mounting plate 27. The guide member 61 is attached to the slide member 62 via a fixing bolt 65,
The guide member 61 includes a pair of guide arms 6 on a base plate 66.
7 and 67 are fixed in a V-shape, and the pair of guide arms 67 and 67 are in contact with the outer surfaces of the cylindrical portions 101 and 102 of the mold K. Then, as shown in FIG. 17, the cylindrical portions 101, 10 of the form K are
The paste P on the upper end portion 8 can be removed while the outer surface of 2 is pressed against the guide arms 67, 67 for positioning. In addition, the outer surface of the split side plate 1, 1A is attached to the guide arm 67,
The paste P can be removed by pressing it against 67.
Also, adjust the mounting position of the guide member 61 by the long hole 63,
The mold can be positioned according to the outer diameter of each mold.

The present invention is not limited to the above embodiments, and various modifications can be made within the scope of the present invention. For example, the shape, size and size of the protruding teeth,
The number and the like can be appropriately selected. The inclination angle of the projecting teeth is 45 degrees in the embodiment, but is 30 to 60.
It may be about a degree. Furthermore, the cement paste removing device of the present invention can be applied to a mold integrated with a cylinder. Furthermore, in the first and second embodiments, the protruding teeth 19 may be formed integrally with the table 15 without using the toothed tip.

[0028]

The apparatus according to claim 1 of the present invention is a removing apparatus for removing the cement paste adhering to the end surface of the concrete specimen formwork, which is provided on the rotatable table and one side flat surface of the table. A pressing surface against which the end surface of the mold is pressed, and a plurality of projecting teeth provided on the pressing surface,
It is provided with a rotation driving means for rotating the table, and it is possible to provide a cement paste removing device for a concrete specimen formwork capable of efficiently removing the cement paste attached to the end surface of the formwork.

The apparatus according to claim 2 of the present invention is provided with a guide member which engages with the inner surface of the mold at a distance from the pressing surface of the table, and the work of pressing the mold against the table. It is possible to provide a cement paste removing device for a concrete sample mold, which can easily remove the cement paste attached to the end surface of the mold.

Further, in the apparatus of claim 3 of the present invention, an idle shaft is provided at the center of the table, and a guide cylinder which engages with the inner surface of the mold is detachably provided on the idle shaft. It is easy to press the formwork against the table,
It is possible to provide a cement paste removing device for a concrete specimen formwork capable of efficiently removing the cement paste attached to the end surface of the formwork.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing a first embodiment of the present invention.

FIG. 2 is a plan view of a main part showing a first embodiment of the present invention.

FIG. 3 is a vertical cross-sectional view of a main part showing a first embodiment of the present invention.

FIG. 4 is a plan view of an essential part showing a second embodiment of the present invention.

FIG. 5 is a plan view of a table showing a third embodiment of the present invention.

FIG. 6 is a partially cutaway side view of a table showing a third embodiment of the present invention.

FIG. 7 is a sectional view taken along line AA of FIG. 5 showing a third embodiment of the present invention.

FIG. 8 is a sectional view taken along line BB in FIG. 5 showing a third embodiment of the present invention.

FIG. 9 is a vertical cross-sectional view showing a fourth embodiment of the present invention.

FIG. 10 is a sectional view of an essential part showing a fourth embodiment of the present invention.

FIG. 11 is a plan view of a guide cylindrical body showing a fourth embodiment of the present invention.

FIG. 12 is a plan view of a guide cylindrical body showing a fourth embodiment of the present invention.

FIG. 13 is a plan view of a table showing a fourth embodiment of the present invention.

FIG. 14 is a view taken along the line CC of FIG. 13 showing a fourth embodiment of the present invention.

FIG. 15 is a vertical cross-sectional view of the main parts of a table showing a fourth embodiment of the present invention.

FIG. 16 is a sectional view of a ring portion having internal teeth according to a fourth embodiment of the present invention.

FIG. 17 is a plan view of an essential part showing a fifth embodiment of the present invention.

FIG. 18 is an exploded perspective view of a mold.

FIG. 19 is a cross-sectional view of a main part of a mold.

[Explanation of symbols]

 K formwork P Cement paste 1,1A Dividing side plate 8 Upper end surface 15,15A, 15B Table 16 Pressing surface 19,34,47 Projecting teeth 21 Motor (rotary driving device) 28 Guide member 43 Idler shaft 45,45A Guide cylinder Body 101, 102 Tube

Claims (3)

[Claims] 1. A removing device for removing cement paste adhering to an end surface of a concrete specimen formwork, which comprises a rotatable table and a pusher provided on one side of the table for pressing the end surface of the formwork. A cement paste removing device for a concrete specimen formwork, comprising: an immediate surface, a plurality of projecting teeth provided on the pressing surface, and a rotation driving means for rotating the table. 2. The cement paste removing apparatus for a concrete specimen formwork according to claim 1, further comprising a guide member provided at a distance from the pressing surface of the table so as to engage with the inner surface of the formwork. 3. An idle shaft is provided so as to protrude from the center of the table,
The cement paste removing device for concrete specimen formwork according to claim 1, wherein a guide cylinder that engages with the inner surface of the formwork is detachably provided on the idle shaft.