The mold only consists of an inner mold and an outer mold. The outer die consists of a forming cylinder and a positioning key fixed on the inner wall of the forming cylinder. Its structure is that a locating key 2 which is perpendicular to the plane of both ends of the bucket, has the same height as the bucket, and has the same protruding height and width is processed on the inner wall of the bottomless and lidless bucket with appropriate diameter and height. Suitable diameter and height, no bottom and no cover, and the drum of positioning key 2 is a forming drum 1. The internal mold consists of a pressure plate 3 with a positioning keyway 5 and a gas supply combustion hole column 4 fixed on the pressure plate 3 (Figures 3 and 4). Its structure is that a notch with the same cross-sectional shape (i.e., the same depth and width) as the positioning key 2 on the inner wall of the outer mold molding cylinder 1 is machined on the circumference of a circular plate with a certain thickness and the same diameter as the inner diameter of the molding cylinder 1, and this notch is the positioning key notch 5. This circular plate with a positioning key notch 5, a certain thickness and the same diameter as the forming cylinder 1 is the pressure plate 3. One side of the pressure plate 3 is provided with an appropriate number of cylinders with the same length and diameter, which are evenly symmetrical with respect to the center of the pressure plate 3. These cylinders are air supply combustion holes 4. When closing the mold, one end of the internal mold with the gas supply combustion hole column 4 is inserted into the external mold forming cylinder 1 with the positioning key 2, and the positioning key 2 on the inner wall of the forming cylinder 1 enters the positioning key gap 5 on the internal mold pressing plate 3. Due to the compact assembly, the surfaces of the inner wall of the molding cylinder 1, the circumferential surface of the pressure plate 3, the positioning key 2 on the inner wall of the molding cylinder 1 and the positioning key notch 5 on the pressure plate 3 should be smooth, so as to be free to move when in use. In fact, the mold can be welded by hand or fired and cast. During manual welding, a section of circular tube with suitable diameter, wall thickness and height can be selected for the outer die, and a locating key 2 with the same section and length as the molding cylinder 1 height is welded on its inner wall along the height direction. The positioning key 2 can be semicircular, triangular or square, which is usually suitable from the point of view of use and aesthetics. The thickness of the inner die press plate 3 should be properly thicker, mainly considering the flatness of the top view of the produced briquette. Because the welding between the press plate 3 and the gas supply combustion hole column 4 is not clean, the top view of the briquette will be uneven. The solution is generally to use the processed press plate 3, which has a positioning key notch 5 that matches the positioning key 2 on the inner wall of the outer die forming cylinder/kloc-0. According to the number of gas supply combustion holes required on the briquette, the welding positions of gas supply combustion hole columns 4 are symmetrically and uniformly arranged relative to the center of the pressure plate 3, a round hole with a diameter smaller than that of gas supply combustion hole columns 4 is drilled on the pressure plate 3, and then one end of round steel used as gas supply combustion hole columns 4 with the same cutting length and diameter is processed into a cylindrical protrusion with the same diameter and the same height as that of the pressure plate 3. A gas supply and combustion hole column 4 with a machined cylindrical protrusion is inserted into a circular hole on the pressure plate 3 from the same surface of the pressure plate 3 from the end of the cylindrical protrusion. Since the height of the cylindrical protrusion on the gas supply and combustion hole column 4 is the same as the thickness of the pressure plate 3, when the cylindrical protrusion on the gas supply and combustion hole column 4 is inserted into the pressure plate 3, it is in the same plane with the other surface of the pressure plate 3. Then, on the plane side of the pressure plate 3 penetrating into the cylindrical protruding part of the gas supply combustion hole column 4, the gas supply combustion hole column 4 is welded and fixed on the pressure plate 3 one by one. The assembly is very simple, as long as one end of the internal mold with the gas supply combustion hole column 4 is inserted into the external mold forming cylinder 1, and the positioning key 2 on the inner wall of the external mold forming cylinder 1 enters the positioning key notch 5 on the matching internal mold pressing plate 3. If the firing and casting process is adopted, it will be simpler, as long as a locating key 2 with the same height, width and depth (i.e. the same cross section) is arranged on the inner wall of the molding cylinder 1 of the outer mold for processing coal cakes, and a locating key notch 5 matching with the locating key 2 is arranged on the inner mold pressing plate 3 of the molding cylinder 1 of the inner wall, and the diameter and length evenly distributed around the center of pressing plate 3 are the same. The length of the gas supply and combustion-supporting hole column 4 on the inner die press plate 3 should be 4-6 cm shorter than the height of the forming cylinder. Only in this way, when the inside of the molding cylinder 1 is filled with coal powder with a good proportion, the briquette pressed by the internal mold pressing plate 3 will be harder. The above honeycomb briquette molds are mainly pressed by machines. It is also very convenient to stamp the honeycomb briquette mould by hand. Different from the above mold, the positioning key 2 on the inner wall of the molding cylinder 1 is processed in the same way, and the upper end of the molding cylinder 1 has a circular cover plate with appropriate thickness and the same outer diameter as the molding cylinder 1, which is welded to one end of the molding cylinder 1. The gas supply combustion hole column 4 is symmetrical to the center of the circular cover plate and is vertically welded on the circular cover plate. One end of the non-welded column is in the molding cylinder 1, and its end point is in the same plane as the circular opening of the molding cylinder 1, that is, the length of the gas supply combustion hole column 4 under the upper circular cover plate of the molding cylinder 1 is the same as the height of the molding cylinder 1. Generally, after fixing the gas supply and combustion-supporting hole column 4 on the circular cover plate of the molding cylinder 1, one end of the column with the gas supply and combustion-supporting hole column 4 is put into the interior of the molding cylinder 1 so that the circumference of the circular cover plate of the molding cylinder 1 completely coincides with the circumference of one end of the molding cylinder 1, and then the circular cover plate is attached to the molding cylinder 1. The circular cover plate of the molding barrel 1 should be opened with a suitable small hole at the position avoiding the gas supply combustion hole column 4, so that the push rod that can push the molded briquette out of the molding barrel 1 push plate can move up and down in it. The small holes that can make the push rod of the push plate move up and down are generally round holes. If there is no gas supply combustion hole in the center of the briquette, just drill a round hole in the center of the circular cover plate, otherwise the small holes should be set in other positions, and the number can be determined according to the situation. The push plate is a circular plate with a thickness suitable for the inner diameter of the molding cylinder 1, and there is a positioning key notch 5 around the circular plate, which matches the positioning key 2 on the inner wall of the molding cylinder 1. The push plate is drilled with a round hole with the same position and diameter as the gas supply and combustion hole column 4 fixed on the forming cylinder 1 circular cover plate, so that the push plate can move freely up and down during the tamping process of briquette. A round steel with a proper length and a diameter slightly smaller than that of the molding barrel 1 circular cover plate is welded as a push rod on the push plate drilled with a round hole and provided with a positioning key notch 5. Align one end of the push plate with the push rod, so that the circular opening of one end of the push rod without the molding cylinder 1 circular cover plate is aligned, align the positioning key notch 5 on the push plate with the positioning key 2 on the inner wall of the molding cylinder 1, align the circular holes on the push plate with the gas supply combustion hole array 4 one by one, align the push rod on the push plate with the circular cover plate of the molding cylinder 1, and push the push plate into the molding cylinder 1. For the sake of firmness, the welding method of the gas supply burning hole column 4 of the manual hand-ramming honeycomb briquette mold and the circular cover plate of the forming cylinder 1 is the same as that of the gas supply burning hole column 4 of the mechanical pressing mold and the pressure plate 3, that is, according to the number of gas supply burning holes required on the coal cake, the welding positions of the gas supply burning hole column 4 are evenly distributed on the circular cover plate of the forming cylinder 1, which is symmetrical to the center of the cover plate, and the diameter of the gas supply burning hole column 4 is centered on the welding position. One end of the gas supply combustion hole column 4 with the same length and diameter is processed into the same cylindrical boss one by one, the length of the cylindrical boss is the same as the thickness of the circular cover plate, and the diameter of the circular hole on the circular cover plate is the same. Then, the gas supply and combustion hole rows 4 processed with cylindrical bosses are inserted into the circular holes of the circular cover plate of the molding cylinder 1 one by one from the end of the cylindrical bosses. Since the height of the cylindrical bosses of the gas supply and combustion hole array 4 is the same as the thickness of the circular cover plate, when the cylindrical bosses of the gas supply and combustion hole array 4 are inserted into the circular holes of the circular cover plate of the molding cylinder 1, they are in the same plane with the other surface. Then, on one side of the plane of the circular cover plate of the molding cylinder 1, the gas supply combustion hole columns 4 are welded and fixed on the circular cover plate of the molding cylinder 1 one by one through the cylindrical projection of the gas supply combustion hole columns 4. Then, the circular cover plate fixed with the gas supply and combustion-supporting hole column 4 is loaded into the molding cylinder 1 from one end of the gas supply and combustion-supporting hole column 4 by using the positioning key 2, so that the circumference of the circular cover plate completely matches the circumference of one end of the molding cylinder 1, and then the circular cover plate and the molding cylinder 1 are welded into a whole. The small hole on the circular cover plate that can make the push rod on the push plate move up and down, the positioning key notch 5 on the push plate, the circular hole on the push plate corresponding to the gas supply combustion hole column 4 and the position of the push rod on the push plate are the same as above.
In this embodiment, a honeycomb briquette production mold with a diameter of 100 mm and a height of 70 mm is used as an external mold, and the external mold consists of a molding cylinder 1 and a positioning key 2 fixed on the inner wall of the molding cylinder 1. The concrete method is to intercept a section of seamless steel pipe with an inner diameter of 100mm and a height of 120mm, and fix a semicircular steel bar with a diameter of 14mm and a length of 120mm on its inner wall along the height direction, with its semi-arc facing the center of the steel pipe, so that the seamless steel pipe with the semicircular steel bar is a forming cylinder/kloc-. There may be one or more positioning keys 2, and generally one is enough.
The internal mold consists of a pressure plate 3 with a positioning key notch 5 and a gas supply combustion hole column 4 fixed on the pressure plate 3 (Figures 3 and 4). The specific method is to draw two mutually perpendicular diameters on a steel plate with a smooth circumference, a thickness of 6mm and a diameter of 100mm, and draw two line segments parallel to the diameter of 1 1mm on both sides of each diameter, with a length of 666mm. The four line segments cross each other vertically, and the diameters perpendicular to them are divided into four intersections and eight endpoints. Then, a semicircular notch with a diameter of 14mm is machined on the circumference of a diameter, the center of the semicircular notch is on this diameter, and the arc of the semicircle faces the center of the circular steel plate. This semicircular notch is the positioning key notch 5, and this circular steel plate with the positioning key notch 5 is the pressure plate 3. The number of locating key notches 5 is determined by the number of locating keys 2 on the inner wall of the outer mold barrel. The gas supply combustion hole string 4 is 12 round steel with a diameter of 12 mm and a length of 76 mm, and one end of the round steel is respectively machined into cylindrical bosses with a length of 6 mm and a diameter of 8 mm. The cylindrical bosses of the gas supply combustion hole string 4 are assembled into the circular holes of the pressure plate 3 from the same surface. Since the length of the cylindrical boss on the gas supply combustion hole array 4 is the same as the thickness of the pressure plate 3, the other surface of the pressure plate 3 is still flat after the cylindrical boss of the gas supply combustion hole array 4 is fitted into the circular hole of the pressure plate 3. On the plane side of the pressure plate 3, the gas supply combustion hole column 4 is fixed on the pressure plate 3 by welding.
When closing the mold, one end of the internal mold with the gas supply combustion hole column 4 is inserted into the external mold forming cylinder 1, and the positioning key 2 on the inner wall of the external mold forming cylinder 1 enters the positioning key notch 5 on the matching internal mold pressing plate 3.
The mold of the utility model for producing automatic hole-aligning honeycomb briquette is simple to manufacture, and a semicircular positioning key 2 can be fixed on the inner wall of the outer mold forming cylinder 4 along its height direction only by slightly modifying the original mold, and a positioning key hole 5 matching with the positioning key 2 on the inner wall of the outer mold forming cylinder 1 can be opened on the inner mold pressing plate 3 of the pressing mold.
The surface of the briquette cylinder produced by the utility model is provided with a vertical semicircular positioning groove with the same height as the briquette cylinder. After the coal cake is put into the furnace liner with the matching positioning key, the hole can be automatically aligned, which is very convenient to use and solves the problem of difficult alignment of the round hole for honeycomb coal gas supply combustion. The die is simple to manufacture and has the value of popularization.
Claim 1. An automatic hole-discharging honeycomb briquette production mold. The outer mold consists of a molding barrel 1, and the inner mold consists of a pressure plate 3 with gas supply and combustion holes 4. Characterized in that at least one positioning key 2 with the same cross section and height as the molding barrel 1 is arranged on the inner wall of the molding barrel 1 along the height direction, and an air supply combustion hole 4 is arranged on the edge of the pressure plate 3.
2. The mold for producing honeycomb briquette with automatic hole alignment according to claim 1 is characterized in that the positioning key 2 on the inner wall of the molding cylinder 1 can be semicircular, triangular or square.