KR100274577B1 - Moulding machine for artificial stone board - Google Patents

Abstract

The present invention relates to a molding machine for artificial stone plate material is placed on the support plate 10 in order to be able to mold the artificial stone plate filled with high density uniformly even with a relatively small molding pressure of less than 0.5kg / ㎠ and a short compression distance Cover the mold mold 12 with a vacuum cover 14, the compression plate 16 is connected to the elastic member 18 (18 ') and guide plates 19, 19' on the vacuum cover 14, The upper end of the fixing cylinders 26 and 26 ', which penetrates the packing members 29 and 29' fixed to the ceiling 28 of the vacuum cover 14, is fixed to the compression plate 16. The cylinders 26 and 26 'are fitted with actuating shafts 32 and 32' having pistons 30 and 30 ', and at the lower ends of the actuating shafts 32 and 32', a vibrator ( 22, the pressure vibrating plate 24 is fixed, and the first pressing coil springs 38, 38 'are installed on the upper sides of the operating shafts 32, 32', and the operating shafts 32, The lower part of (32 ') is the molding machine of the artificial stone board which carried the 2nd compression coil spring (40) and (40').

The present invention is to compact the filling contained in the mold into a pressurized vibrating plate that moves at a small amplitude and rapid vibration cycle, so that the surface of the high-quality artificial stone plate with smooth surface and no pores while using a conventional press with a pressing force of less than 0.5kg / ㎠ Can be mass-produced.

Description

Molding machine for artificial stone

The present invention relates to a molding machine for artificial stone plate, more specifically, a molding machine capable of manufacturing a high-density filled artificial stone plate while applying vibration and pressing under vacuum in forming an artificial stone plate with inorganic particles and binder resin crushed with natural stone. It is about.

U.S. Patent No. 4,204,822 is equipped with a double-acting hydraulic cylinder, a vacuum device, and an automatic transfer plate for inserting and removing moldings. US Patent No. 4,698,010 discloses an apparatus for forming a large block by vacuum, vibration, and pressurizing a raw material filled in a molding die, and a method for manufacturing artificial stone board material by cutting and grinding the molded block.

Conventional molding machines such as the upper part and the corner part of the molding are relatively lower than the lower part due to the filling density gradient of the raw material, which is generated when the raw material is filled into the mold, and the pressure difference generated when the pressing plate is pressed. As the packing density was lowered, the lower part with higher packing density received a higher compressive force, while the upper part and the lower part with lower packing density received relatively smaller compressive force, so that a molded article having the same appearance as the mold was produced. It was difficult, and the upper part and the corner part of the molding had to be vulnerable to impact or load, and the loss of material was increased by the pores in the molding during post-processing such as cutting and polishing, as well as uniform filling of raw materials. Large vibration for high density charging Because it had been more than 0.5kg / ㎠ requires a high pressing force geotyieoseo no choice but to increase the vibration device and the pressing device has a problem, such as the equipment scale of the entire molding machine be costly increases the production cost of the molded article.

The present inventors can solve the problems of the prior art by using a conventional press having a pressing force of less than 0.5kg / ㎠, if the filling can be made of artificial stone plate filled with high density uniformly high quality artificial stone plate at low cost It was found that the mass production can be completed to complete the present invention.

Accordingly, it is an object of the present invention to provide a molding machine capable of molding artificial stone plates in which fillers are uniformly filled with high density even at relatively small molding pressures and short compression distances.

1 is a cross-sectional view showing a part of the molding machine according to the present invention

Front view showing the internal structure.

Figure 2 is a state in which the molding machine according to the invention mounted on the press

Front view shown.

〈Explanation of the Signs of Major Parts of Drawings〉

10: support plate, 12: mold, 14: vacuum cover, 16: compression plate,

22: vibrator, 24: pressurized vibration plate, 26,26´: fixed cylinder,

32, 32 ': Working shaft, 38,38': First compression coil spring,

40, 40 ': Second compression coil spring.

As illustrated in FIG. 1, the molding die 12 is placed on the support plate 10, and the vacuum cover compression plate 16 is a compression coil on the vacuum cover 14 covering the molding die 12. It is connected by elastic members 18, 18 'and guide pins 19, 19', such as springs, so that the lower edge 20 of the vacuum cover 14 and the support plate 10 can be brought into close contact with each other. The upper end of the fixed cylinders 26, 26 'on which the pressure vibrating plate 24 with the vibrator 22 is suspended is fixed to the compression plate 16.

The fixed cylinders 26 and 26 'are provided with packing members 29 and 29' whose lower ends are fixed to the ceiling 28 of the vacuum cover 14 with the upper end fixed to the vacuum cover compression plate 16. And extends toward the pressure vibration plate 24.

The upper ends of the working shafts 32 and 32 'are fixed to the centers of the pistons 30 and 30' fitted to the fixed cylinders 26 and 26 ', and the working shafts 32 and 32 ´) extends toward the pressure vibrating plate 24 through the holes 36, 36 ′ formed in the caps 34, 34 'which close the bottom of the fixed cylinders 26, 26'. The lower ends of the working shafts 32 and 32 'are fixed to the pressure vibrating plate 24 in the hinged state.

First compression coil springs 38 for supporting the pressure vibrating plate 24 on the upper portions of the actuating shafts 32, 32 'between the pistons 30, 30' and the caps 34, 34 '. ), (38 ') are inserted, and pressurizing vibration plate 24 is pressed at the lower part of the operating shafts 32 and 32' between the pressure vibration plate 24 and the caps 34 and 34 '. The second compression coil springs 40, 40 'are fitted.

The vacuum cover 14 is connected to a vacuum conduit 42 which draws out the air inside the vacuum cover 14 to the outside.

Molding mold 12 is a prefabricated that can be separated into the side wall plate 44 and the bottom plate 46.

The inner bottom edge of the side wall plate 44 is formed with a recess 48 to which the bottom plate 46 is fitted so as not to be deformed when the mold 12 is moved in the horizontal direction.

In the present invention, the first compression coil springs 38, 38 'and the second compression coil springs 40, 40' have compression forces of these springs with the vibrator 22 in a state of equilibrium of force. It is preferable to select the size of the spring so that the weight of the pressure vibrating plate 24 can be greater than the sum of the weights of the vibration vibrating plate 24. Even if it acts on the pressurized vibrating plate 24 to move with a small amplitude and a very fast vibration cycle, the filling contained in the mold 12 is dense and dense so as not to generate an unfilled hole in any part of the mold 12 It is to be able to charge.

In addition, the side wall plate 44 of the mold 12 is preferably made of aluminum alloy or stainless steel having excellent thermal conductivity, and the bottom plate 46 is preferably made of a light aluminum alloy having excellent thermal conductivity. Preferably, the rubber plate 50 is attached to the surface of the bottom plate 46 because it can effectively vibrate and press-form the filling filled into the mold 12.

The molding machine according to the present invention is elastic when the compression plate 16 is pressed in a state mounted between the lower movable plate 100 and the upper fixing plate 102 of the conventional press 104 as illustrated in FIG. As the members 18 and 18 'are compressed, the lower edge 20 of the vacuum cover 14 is brought into close contact with the support plate 10.

In the sealed state between the vacuum cover 14 and the support plate 10, the air inside the vacuum cover 14 is drawn out through the vacuum conduit 42 connected to the vacuum cover 14 to reduce the degree of vacuum inside the vacuum cover 14. By operating the vibrator 22 while maintaining about 15 mbar, the first coil spring 38, (in the fixed cylinders 26, 26 'is applied to the pressing force transmitted from the compression plate 16 to the pressure vibrating plate 24. 38 ') and pressurized while vibrating the filling 200 contained in the molding die 12 while being received through the working shaft 32, 32' is installed. At this time, as the second coil springs 40 and 40 'installed between the fixed cylinders 26, 26' and the pressure vibrating plate 24 contract, the pressure vibrating plate 24 is filled in the forming die 12. It is possible to pressurize the filling 200 with a greater force, and the first coil springs 38, 38 'and the second coil springs installed above and below the operating shafts 32 and 32'. 40), 40 'are alternately contracted and inflated so that the pressure vibrating plate 24 suspended from the bottom of the working shaft 32, 32' vibrates with a small amplitude and a very fast cycle.

Therefore, even if the compression force that presses the pressure vibrating plate 24, that is, the molding pressure is less than 0.5kg / cm 2, the operating shafts 32, 32 'with the pressure vibrating plate 24 fitted to the fixed cylinders 26, 26'. ) Has a small amplitude and a fast vibration period by the elastic force of the first coil springs 38, 38 'and the second coil springs 40, 40', which are piled up above and below, respectively. The filling 200 is pressurized and vibrated in the filling 200 so that the filling 200 is densely filled at any part of the forming mold 12 so that unfilled pores are not generated. 12) It allows high density filling of the whole.

In addition, since the sidewall plate 44 and the bottom plate 46 are prefabricated, the molding die 12 used in the present invention may remove the sidewall plate 44 and the bottom plate 46 when the molding is taken out from the molding die 12. Because it can be separated, it can be easily taken out without fear of damaging the edge of the molding, compared to the conventional one, in which the molding frame is made of one body and the side wall is tapered, and a molded article is formed at right angles with the top, bottom and sides To make sure.

The present invention is to squeeze the filling 200 contained in the mold 12 with a pressurized vibration plate 24 that moves at a small amplitude and a fast vibration cycle, so that the molding pressure of 0.5kg / cm 2 or more is required from 0.15 to Since the molding pressure of 0.2kg / ㎠ can be used to form the densely filled artificial stone plate with high density, the high quality artificial stone plate can be produced at a low cost while using a conventional press with a pressing force of less than 0.5kg / ㎠. It can be produced, the surface is smooth, no pores, there is no inclination on the side, there is an advantage such as molding the artificial stone plate which can reduce the loss of material when grinding and cutting.

Claims (4)

On the support plate 10 on which the molding die 12 is placed, a vacuum cover 14 covering the periphery of the molding die 12 is placed. On the vacuum cover 14, the compression plate 16 is formed of an elastic member 18, ( 18 ') and guide pins 19 and 19', and the compression plate 16 penetrates the packing members 29 and 29 'fixed to the ceiling 28 of the vacuum cover 14. The upper ends of the fixed cylinders 26 and 26 'are fixed, and the working shafts 32 and 32' have pistons 30 and 30 'in the fixed cylinders 26 and 26'. ), The pressurized vibration plate 24 with the vibrator 22 is fixed to the lower ends of the operating shafts 32 and 32 ', and the first side of the operating shafts 32 and 32'. Compression coil springs 38, 38 ', artificial stone plate, characterized in that the second compression coil springs (40, 40') are installed on the lower side of the operating shaft (32), (32 '). Molding machine. The molding machine according to claim 1, wherein the molding die (12) is adapted to separate and couple the side wall plate (44) and the bottom (46). 3. The molding machine for artificial stone plate material according to claim 2, wherein the inner bottom edge of the side plate (44) is formed with a recessed portion (48) into which the bottom plate (46) is fitted. 3. The molding machine for artificial stone plate material according to claim 2, wherein a rubber plate (50) is attached to the surface of the bottom plate (46).