CN115319897B - A hydraulic high-precision mold sleeve that can be opened and closed - Google Patents

Abstract

The present invention belongs to the technical field of refractory brick forming molds. The present invention discloses an openable and closable hydraulic high-precision mold sleeve, wherein guide columns are symmetrically arranged around hydraulic cylinder three and hydraulic cylinder four on the front and rear sides of the mold sleeve; the long mold is arranged on the inner side of the long movable plate, and the short mold is arranged on the inner side of the short movable plate; bolt holes two are symmetrically fixedly arranged near the left and right ends of the short movable plate, and the hydraulic cylinder mounting holes are symmetrically arranged in the middle position of the long movable plate; the fixing holes are arranged in the middle position of the long movable plate and the short movable plate. The beneficial effects of the present invention are: 1. The efficiency of replacing and assembling molds is improved, and the labor intensity is reduced. 2. When assembling and replacing molds, the overlap between the mold center and the mold sleeve center is improved. 3. The stability and mold cavity accuracy of the refractory brick forming mold are improved, and mold deformation is eliminated. 4. The friction force of demolding after the refractory brick blank is formed is reduced to zero.

Description

A hydraulic high-precision mold sleeve that can be opened and closed

Technical Field

The invention belongs to the technical field of refractory brick forming molds, and in particular relates to an openable and closable hydraulic high-precision mold sleeve.

Background Art

Refractory brick forming molds are key forming components in the refractory brick forming process. Refractory brick forming molds mainly include mold sleeves, pads, and molds; the mold sleeves are mainly used to fix and limit the pads and molds, as well as to fine-tune the mold size. For the forming of refractory bricks, with the continuous advancement of science and technology, the degree of automation of the laying, demolding, and handling of refractory brick blanks in the forming process of refractory bricks is getting higher and higher, especially the handling of refractory brick blanks with the cooperation of robots, which greatly improves the efficiency of the refractory brick forming process and the quality of product forming. However, the current degree of automation of traditional refractory brick forming molds cannot meet the needs of automatic coordination with refractory brick blank handling robots. Therefore, the improvement of refractory brick forming molds is more urgently needed.

At present, the main technical problems of traditional refractory brick forming molds are: 1. When assembling and replacing the mold, it is necessary to disassemble the mold sleeve to replace and assemble the mold. The efficiency of replacing and assembling the mold is low and the labor intensity is high. 2. When assembling and replacing the mold, it is difficult to ensure that the center of the mold coincides with the center of the mold sleeve, and it is difficult to cooperate with the highly automated material distribution, demolding and robot handling manufacturing execution system (MES) to form an intelligent refractory brick forming production operation. 3. The traditional refractory brick forming mold has poor stability and poor mold cavity accuracy. The mold is easy to deform and the molding quality of the refractory brick cannot be controlled. 4. When using the traditional refractory brick forming mold, the demolding friction after the refractory brick blank is formed is large, which easily causes demolding damage defects to the refractory brick. Based on the above defects in the prior art, the inventor has developed a hydraulic high-precision mold sleeve that can be opened and closed, which can well solve the above problems existing in the prior art.

Utility Model Content

In order to solve the above-mentioned technical problems, the present invention provides an openable and closable hydraulic high-precision mold sleeve, which has a simple and scientifically reasonable design structure, realizes the mold sleeve without disassembly, and changes the mold assembly and replacement mode; the present invention can solve the problem that when assembling and replacing the mold, the mold sleeve needs to be disassembled, resulting in low efficiency and high labor intensity in replacing and assembling the mold. At the same time, it solves the problem that when assembling and replacing the mold, it is difficult to ensure that the mold center coincides with the mold sleeve center, and it is difficult to cooperate with the manufacturing execution system with a high degree of automation for material distribution, demolding and manipulator handling to form an intelligent refractory brick forming production operation; it also solves the problem that the traditional refractory brick forming mold has poor stability, poor mold cavity accuracy, easy deformation of the mold, and uncontrollable molding quality of the refractory brick; it also solves the problem that when using the traditional refractory brick forming mold, the demolding friction is large after the refractory brick blank is formed, which easily causes the refractory brick to have demolding damage defects.

The technical solution adopted by the present invention to solve the technical problem is: a hydraulic high-precision mold sleeve that can be opened and closed, including hydraulic cylinder one, hydraulic cylinder two, and hydraulic cylinder three; hydraulic cylinder one is fixedly arranged on the left side of the mold sleeve near the rear end position, and hydraulic cylinder two is fixedly arranged in front of the hydraulic cylinder one; hydraulic cylinder three is fixedly arranged in the middle position of the front side of the mold sleeve, and hydraulic cylinder four is fixedly arranged in the middle position of the rear side of the mold sleeve; hydraulic cylinder five is fixedly arranged on the right side of the mold sleeve near the rear end position, and hydraulic cylinder six is fixedly arranged in front of the hydraulic cylinder five; guide columns are symmetrically arranged on the left and right sides of the mold sleeve around hydraulic cylinder one, hydraulic cylinder two, hydraulic cylinder five, and hydraulic cylinder six; guide columns are symmetrically arranged on the front and rear sides of the mold sleeve around hydraulic cylinder three and hydraulic cylinder four; limit bolts are symmetrically arranged on the left and right sides of hydraulic cylinder three and hydraulic cylinder four; the mold sleeve is a hollow cubic structure; long movable plates are symmetrically arranged On the left and right inner sides of the mold sleeve, the height of the long movable plate is equal to the height of the mold sleeve, and the long movable plate is a fixed combination of two long movable plates; the short movable plate is symmetrically arranged on the front and rear inner sides of the mold sleeve, the height of the short movable plate is equal to the height of the mold sleeve, and the short movable plate is a fixed combination of two short movable plates; the long pad is arranged in the middle position of the two long movable plates, and the short pad is arranged in the middle position of the two short movable plates; the long mold is arranged on the inner side of the long movable plate, and the short mold is arranged on the inner side of the short movable plate; the bolt holes are symmetrically fixedly arranged near the left and right ends of the short movable plate, the guide holes are symmetrically arranged in the upper and lower positions of the long movable plate, and the guide holes are symmetrically arranged at the left and right end positions of the short movable plate; the hydraulic cylinder mounting holes are symmetrically arranged in the middle position of the long movable plate, and the hydraulic cylinder mounting holes are arranged on the short movable plate at the center position of the short movable plate; the fixing holes are arranged in the middle position between the upper and lower parts of the long movable plate and the short movable plate.

The hydraulic cylinders 1, 2, 5 and 6 are arranged on the left and right sides of the mold sleeve in a corresponding manner; the hydraulic cylinders 3 and 4 are arranged on the front and back sides of the mold sleeve in a corresponding manner.

The mold sleeve includes a mold sleeve body, which is a cube with openings at the top and bottom. Four step holes are correspondingly arranged on the front and back of the left and right sides of the mold sleeve body, and four bolt holes are fixedly arranged on the front and back sides of the mold sleeve body and are symmetrically arranged on both sides of the step holes; six guide holes are symmetrically arranged on the left and right sides of the mold sleeve body, and four guide holes are symmetrically arranged on the front and back sides of the mold sleeve body.

The hydraulic cylinder one is fixedly installed in the step hole on the left side of the mold sleeve body near the rear end, and the hydraulic cylinder two is fixedly installed in the step hole on the left side of the mold sleeve body near the front end; the hydraulic cylinder three is installed in the step hole in the center of the front side of the mold sleeve body, and the hydraulic cylinder three is installed in the step hole in the center of the rear side of the mold sleeve body; the hydraulic cylinder five is installed in the step hole on the right side of the mold sleeve body near the rear end, and the hydraulic cylinder six is installed in the step hole on the right side of the mold sleeve body near the front end; the telescopic rods of hydraulic cylinder one, hydraulic cylinder two, hydraulic cylinder three, hydraulic cylinder three, hydraulic cylinder five and hydraulic cylinder six pass through the step hole of the mold sleeve body, the hydraulic cylinder mounting hole of the long movable plate or the short movable plate, and are fixedly connected to the center position of the outer side surface of the long mold or the short mold.

The guide posts are symmetrically arranged in six on the left and right sides of the mold sleeve body from front to back and up and down; four guide posts are symmetrically arranged in four on the front and back sides of the mold sleeve body from left to right and up and down; the guide posts are installed in the guide holes 1 on the left and right and front and back sides of the mold sleeve body and the guide holes 2 on the long movable plate and the short movable plate; the outer ends of the guide posts extend to the outside of the mold sleeve body, the inner ends of the guide posts are flush with the inner sides of the long movable plate and the short movable plate, and are fixedly connected to the outer sides of the long mold and the short mold.

The limit bolts are close to the left and right sides of the hydraulic cylinder three and the hydraulic cylinder four, and are symmetrically arranged in four. The limit bolts are installed in the bolt hole one of the mold sleeve body and the bolt hole two of the short movable plate to tighten and fix the mold sleeve body and the short movable plate into one.

The bolt hole 1 on the front and rear sides of the mold sleeve body is arranged in front and back correspondence with the bolt hole 2 on the short movable plate; the guide hole 1 on the left and right sides of the mold sleeve body is arranged in left and right correspondence with the guide hole 2 on the long movable plate; the guide hole 1 on the front and rear sides of the mold sleeve body is arranged in front and back correspondence with the guide hole 2 on the short movable plate.

The long mold includes a long mold body, which is in the shape of a rectangular parallelepiped. The mounting grooves are arranged at the upper and lower inner positions of the long mold body. The mounting grooves are in the shape of a flat convex letter. The mounting grooves run through the long mold body longitudinally, and the fixing screw holes evenly pass through the upper and lower mounting grooves horizontally.

The installation grooves and fixing screw holes provided on the long mold facilitate the installation of the mold capable of changing the specific shapes of the upper and lower surfaces of the refractory brick blank, so as to achieve the purpose of changing the shapes of the upper and lower surfaces of the refractory brick blank.

The short mold comprises a short mold body, which is in a rectangular shape, and connecting screw holes are symmetrically arranged in the upper and lower middle parts of the short mold body.

The long mold symmetrically arranged on the mold sleeve body and the short mold symmetrically arranged on the mold sleeve body are closely aligned to form a mold cavity for molding refractory bricks.

The mold installation method of the hydraulic high-precision mold sleeve that can be opened and closed and the mold cavity adjustment and demoulding molding method are as follows:

1. Mould installation and replacement method:

Step 1, installation of the die sleeve and hydraulic cylinder: first, fix the die sleeve in the center of the workbench of the press, then fix hydraulic cylinder 1 in the step hole on the left side of the die sleeve body near the rear end, and hydraulic cylinder 2 in the step hole on the left side of the die sleeve body near the front end; hydraulic cylinder 3 is installed in the step hole in the center of the front side of the die sleeve body, and hydraulic cylinder 3 is installed in the step hole in the center of the rear side of the die sleeve body; hydraulic cylinder 5 is installed in the step hole on the right side of the die sleeve body near the rear end, and hydraulic cylinder 6 is installed in the step hole on the right side of the die sleeve body near the front end;

Step 2: Coordinated installation of the long moving plate, the short moving plate, the long pad plate and the short pad plate: first, place the long pad plate in the middle of the two long moving plates, and use bolts to pass through the fixing holes on the two long moving plates and the upper and lower parts of the long pad plates to fix the two long moving plates and the long pad plates together; then place the short pad plate in the middle of the two short moving plates, and use bolts to pass through the fixing holes on the two short moving plates and the upper and lower parts of the short pad plates to fix the two short moving plates and the short pad plates together;

Step 3: Coordinated installation of the long movable plate, the short movable plate, the long pad, the short pad and the mold sleeve: symmetrically install the long movable plate and the long pad installed in step 2 on the left and right inner sides of the mold sleeve body of the mold sleeve; at the same time, symmetrically install the short movable plate and the short pad on the front and back inner sides of the mold sleeve body of the mold sleeve;

Step 4, coordination and installation of guide posts, limit bolts, long movable plates and short movable plates: 1. Installation of guide posts: pass the guide posts through guide holes 1 on the left and right sides of the mold sleeve body, and guide holes 2 on the long pad and long movable plates, so that the inner end of the guide posts is fixed to the guide hole 2 on the inner long movable plate; at the same time, pass the guide posts through guide holes 1 on the front and rear sides of the mold sleeve body, and guide holes 2 on the short pad and short movable plates, so that the inner end of the guide posts is fixed to the guide hole 2 on the inner short movable plate; 2. Installation of limit bolts: pass the limit bolts through bolt holes 1 on the front and rear sides of the mold sleeve body, and bolt holes 2 on the short pad and short movable plates, so that the screw heads of the limit bolts are flush with the bolt holes 2 on the inner short movable plates, and the screw rods of the limit bolts extend to the outside of the mold sleeve body and are tightened and fixed with nuts;

Step 5. Coordinated installation of the long mold, short mold, hydraulic cylinder, mold sleeve, long movable plate, short movable plate, long pad and short pad: first, symmetrically install the long mold on the inner side of the long movable plate, so that the long mold and the long movable plate are aligned; at the same time, symmetrically install the short mold on the inner side of the short movable plate, so that the short mold and the short movable plate are aligned; then pass the telescopic rods of hydraulic cylinder one, hydraulic cylinder two, hydraulic cylinder three, hydraulic cylinder three, hydraulic cylinder five and hydraulic cylinder six through the step hole of the mold sleeve body, the hydraulic cylinder mounting hole of the long movable plate or the short movable plate and fix them to the center position of the outer side of the long mold or the short mold.

Step 6. Replacement of long mold, short mold, hydraulic cylinder, mold sleeve, long movable plate, short movable plate, long pad, short pad and guide column: When it is necessary to replace any of the long mold, short mold, hydraulic cylinder one, hydraulic cylinder two, hydraulic cylinder three, hydraulic cylinder three, hydraulic cylinder five, hydraulic cylinder six, mold sleeve, long movable plate, short movable plate, long pad, short pad and guide column, there is no need to disassemble the mold sleeve. Any of its components can be replaced by performing the opposite operations of the installation actions of the relevant components in the above steps one to five.

2. Adjustment of mold cavity and demoulding method:

Step 1: Determine the mold adjustment reference: After the mold is installed, use the center of the mold sleeve on the press workbench as the adjustment reference; at the same time, loosen and remove the nuts on the limit bolts on the front and rear sides of the mold sleeve;

Step 2, adjustment of the length and width of the mold cavity: start hydraulic cylinder 1, hydraulic cylinder 2, hydraulic cylinder 3, hydraulic cylinder 3, hydraulic cylinder 5, hydraulic cylinder 6 to start working, and control the stroke of the telescopic rods of hydraulic cylinder 1, hydraulic cylinder 2, hydraulic cylinder 3, hydraulic cylinder 3, hydraulic cylinder 5, hydraulic cylinder 6 according to the process size of the refractory bricks. Through the extension action of the telescopic rods of hydraulic cylinder 1, hydraulic cylinder 2, hydraulic cylinder 3, hydraulic cylinder 3, hydraulic cylinder 5, hydraulic cylinder 6, under the guidance of the guide column, push the long mold symmetrically arranged on the left and right and the short mold symmetrically arranged on the front and back to move toward the center of the mold sleeve body, until they are closely aligned to form a mold cavity for forming refractory brick blanks; at this time, the center of the mold cavity formed by the long mold symmetrically arranged on the left and right and the short mold symmetrically arranged on the front and back coincides with the center of the mold sleeve body of the mold sleeve;

Step 3, forming and demolding of refractory brick blanks: after the adjustment of the mold cavity in step 2 is completed, the feeding device automatically feeds the material to the long mold symmetrically arranged left and right and the short mold symmetrically arranged front and back, and forms the refractory brick blanks by bidirectional extrusion of the press; after the refractory brick blanks are formed, the upper hammer of the press drives the upper mold in the upper direction of the mold sleeve to leave the upper part of the mold sleeve cavity, and at the same time, the telescopic rods of hydraulic cylinder 1, hydraulic cylinder 2, hydraulic cylinder 3, hydraulic cylinder 3, hydraulic cylinder 5, and hydraulic cylinder 6 retract, and the long mold and the short mold are restored to the state before the size adjustment under the pull of the retraction action of the telescopic rods of hydraulic cylinder 1, hydraulic cylinder 2, hydraulic cylinder 3, hydraulic cylinder 3, hydraulic cylinder 5, and hydraulic cylinder 6; at this time, the lower hammer and the lower mold located at the lower part of the press eject the formed refractory brick blank from the upper part of the mold sleeve cavity, thereby realizing zero friction demolding of the refractory brick blank.

In the present invention, hydraulic cylinder one is fixedly arranged on the left side of the mold sleeve near the rear end position, and hydraulic cylinder two is fixedly arranged on the front side position of the hydraulic cylinder one; hydraulic cylinder three is fixedly arranged on the middle position of the front side of the mold sleeve, and hydraulic cylinder four is fixedly arranged on the middle position of the rear side of the mold sleeve; hydraulic cylinder five is fixedly arranged on the right side of the mold sleeve near the rear end position, and hydraulic cylinder six is fixedly arranged on the front side position of the hydraulic cylinder five; hydraulic cylinder one is fixedly installed in the step hole near the rear end on the left side of the mold sleeve body, and hydraulic cylinder two is fixedly installed in the step hole near the front end on the left side of the mold sleeve body; hydraulic cylinder three is installed in the step hole at the center of the front side of the mold sleeve body, and hydraulic cylinder three is installed in the step hole at the center of the rear side of the mold sleeve body; hydraulic cylinder five is installed in the step hole near the rear end on the right side of the mold sleeve body, and hydraulic cylinder six is installed in the step hole near the front end on the right side of the mold sleeve body; telescopic rods of hydraulic cylinder one, hydraulic cylinder two, hydraulic cylinder three, hydraulic cylinder three, hydraulic cylinder five and hydraulic cylinder six pass through the step hole of the mold sleeve body, the hydraulic cylinder mounting hole of the long movable plate or the short movable plate and are fixedly connected to the center position of the outer side surface of the long mold or the short mold. The above-mentioned arrangement of hydraulic cylinder one, hydraulic cylinder two, hydraulic cylinder three, hydraulic cylinder three, hydraulic cylinder five and hydraulic cylinder six, on the one hand, plays a role in tightening and limiting the long mold and the short mold; on the other hand, by utilizing the telescopic action of the telescopic rods of hydraulic cylinder one, hydraulic cylinder two, hydraulic cylinder three, hydraulic cylinder three, hydraulic cylinder five and hydraulic cylinder six, under the guidance of the guide column, the long mold symmetrically arranged on the left and right and the short mold symmetrically arranged on the front and back are pushed to move toward the center of the mold sleeve body, thereby playing a role in moving the long mold and the short mold with the same stroke.

In the present invention, guide columns are symmetrically arranged around the hydraulic cylinder 1, hydraulic cylinder 2, hydraulic cylinder 5 and hydraulic cylinder 6 on the left and right sides of the mold sleeve; guide columns are symmetrically arranged around the hydraulic cylinder 3 and hydraulic cylinder 4 on the front and rear sides of the mold sleeve; six guide columns are symmetrically arranged from front to back on the left and right sides of the mold sleeve body; four guide columns are symmetrically arranged from left to right on the front and rear sides of the mold sleeve body; the guide columns are installed in the guide holes 1 on the left and right and front and rear side surfaces of the mold sleeve body and the guide holes 2 on the long movable plate and the short movable plate; the outer ends of the guide columns extend to the outside of the mold sleeve body, the inner ends of the guide columns are flush with the inner sides of the long movable plate and the short movable plate, and are fixedly connected to the outer sides of the long mold and the short mold. The main purpose of the above-mentioned setting is: through the cooperation of the guide column with hydraulic cylinder one, hydraulic cylinder two, hydraulic cylinder three, hydraulic cylinder three, hydraulic cylinder five and hydraulic cylinder six, on the one hand, the long mold and the short mold can be moved smoothly under the telescopic push of hydraulic cylinder one, hydraulic cylinder two, hydraulic cylinder three, hydraulic cylinder three, hydraulic cylinder five and hydraulic cylinder six; on the other hand, the adjustment of the size of the long mold and the short mold centered on the mold sleeve is more precise; on the other hand, the deformation of the long mold and the short mold in the mold sleeve can be effectively prevented.

In the present invention, the limit bolts are symmetrically arranged on the left and right sides of the hydraulic cylinder three and the hydraulic cylinder four; the limit bolts are close to the left and right sides of the hydraulic cylinder three and the hydraulic cylinder four, and four are symmetrically arranged; the limit bolts are installed in the bolt hole one of the mold sleeve body and the bolt hole two of the short movable plate to tighten and fix the mold sleeve body and the short movable plate into one. The main purpose of the above arrangement is: on the one hand, when adjusting the position of the long mold and the short mold, the nut on the limit bolt is in a loosened and removed state, and the limit bolt at this time plays a guiding role, which improves the moving stability of the short mold; on the other hand, when the long mold and the short mold are adjusted in place, the nut is installed on the limit bolt to play a role in limiting and fixing the position of the short movable plate and the short mold.

In the present invention, the mold sleeve includes a mold sleeve body, which is a cube with upper and lower openings. Four step holes are correspondingly arranged on the front and rear sides of the left and right sides of the mold sleeve body. Four bolt holes are fixedly arranged on the front and rear sides of the mold sleeve body and are symmetrically arranged on both sides of the step holes; six guide holes are symmetrically arranged on the left and right sides of the mold sleeve body, and four guide holes are symmetrically arranged on the front and rear sides of the mold sleeve body. The main purpose of setting the step holes is to allow hydraulic cylinder one, hydraulic cylinder two, hydraulic cylinder three, hydraulic cylinder three, hydraulic cylinder five and hydraulic cylinder six to be firmly installed in the step holes. The main purpose of setting the bolt hole one is to facilitate the limiting bolt to pass through the bolt hole one, so as to limit and fix the position of the short movable plate and the short mold. The main purpose of setting the guide holes is to facilitate the connection of the guide column with the long movable plate and the short movable plate through the guide holes.

In the present invention, the long movable plate is symmetrically arranged on the left and right inner sides of the mold sleeve, the height of the long movable plate is equal to the height of the mold sleeve, and the long movable plate is a fixed combination of two long movable plates; the short movable plate is symmetrically arranged on the front and rear inner sides of the mold sleeve, the height of the short movable plate is equal to the height of the mold sleeve, and the short movable plate is a fixed combination of two short movable plates; the long pad is arranged in the middle position of the two long movable plates, and the short pad is arranged in the middle position of the two short movable plates; the long mold is arranged on the inner side of the long movable plate, and the short mold is arranged on the inner side of the short movable plate. The main purpose of arranging the long movable plate, the long pad, the short movable plate, and the short pad is: on the one hand, when the refractory brick blank is formed by a press, the long movable plate, the long pad, the short movable plate, and the short pad play a role in buffering radial pressure; on the other hand, the mold sleeve body, the long mold, and the short mold are protected from the impact of radial pressure, and the deformation of the mold sleeve and the mold cavity is effectively prevented.

In the present invention, bolt hole two is fixedly arranged near the left and right ends of the short movable plate, guide hole two is symmetrically arranged at the upper and lower positions of the long movable plate, and guide hole two is symmetrically arranged at the left and right ends of the short movable plate; the hydraulic cylinder mounting hole is symmetrically arranged at the middle position of the long movable plate, and the hydraulic cylinder mounting hole is arranged at the center position of the short movable plate on the short movable plate; the fixing hole is arranged at the middle position of the long movable plate and the short movable plate. The main purpose of the above-mentioned bolt hole two is: by using the setting of bolt hole two, the mold sleeve body and the short movable plate are tightened and fixedly connected into one by installing the limit bolt in the bolt hole one of the mold sleeve body and the bolt hole two of the short movable plate; on the one hand, when adjusting the position of the long mold and the short mold, the nut on the limit bolt is in a loosened and removed state, and the limit bolt at this time plays a guiding role, which improves the moving stability of the short mold; on the other hand, when the long mold and the short mold are adjusted in place, the nut is installed on the limit bolt to play a role in limiting and fixing the position of the short movable plate and the short mold. The main purpose of setting the above-mentioned guide hole 2 is: through the setting of guide hole 2 and guide hole 1 on the mold sleeve body, and in coordination with the guide column, on the one hand, the long mold and the short mold can be pushed and retracted by hydraulic cylinder 1, hydraulic cylinder 2, hydraulic cylinder 3, hydraulic cylinder 3, hydraulic cylinder 5 and hydraulic cylinder 6 to achieve smooth movement; on the other hand, the adjustment of the size of the long mold and the short mold centered on the mold sleeve can be more precise; on the other hand, the deformation of the long mold and the short mold in the mold sleeve can be effectively prevented.

In the present invention, steps one to six in the mold installation and replacement method work together. On the one hand, the mold sleeve can be disassembled without being disassembled, and the mold assembly and replacement mode is changed; the efficiency of replacing and assembling the mold is improved, and the labor intensity is reduced; on the other hand, when assembling and replacing the mold, the overlap between the mold center and the mold sleeve center is improved, so that the manufacturing execution system with a high degree of automation, such as material distribution, demoulding and robot handling, is coordinated and coordinated, thereby forming an intelligent refractory brick molding production operation process.

In the present invention, the combined effect of the adjustment of the mold cavity and steps one to three in the demolding molding method, on the one hand, reduces the friction force of demolding after the refractory brick blanks are formed to zero, thereby improving the molding quality of the refractory brick blanks and effectively preventing demolding defects caused by demolding after the refractory brick blanks are formed; on the other hand, it improves the stability of the refractory brick molding mold and the accuracy of the mold cavity, preventing mold deformation, and effectively controlling the molding quality of the refractory bricks.

The beneficial effects of the present invention are: 1. It realizes the non-disassembly of the mold sleeve, changes the mold assembly and replacement mode; improves the efficiency of replacing and assembling the mold, and reduces the labor intensity. 2. When assembling and replacing the mold, the overlap between the mold center and the mold sleeve center is improved, so that the manufacturing execution system with a high degree of automation, demolding and manipulator handling can be coordinated to form an intelligent refractory brick molding production process. 3. The stability of the refractory brick molding mold and the accuracy of the mold cavity are improved, and the deformation of the mold is eliminated, so that the molding quality of the refractory brick can be effectively controlled. 4. The friction force of demolding after the refractory brick blank is formed is reduced to zero, which improves the molding quality of the refractory brick blank and effectively eliminates the quality defects caused by demolding after the refractory brick blank is formed.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a schematic structural diagram of the present invention;

FIG2 is a schematic structural diagram of a mold sleeve of the present invention;

FIG3 is a schematic diagram of the structure of a long movable plate of the present invention;

FIG4 is a schematic structural diagram of a short movable plate of the present invention;

FIG5 is a schematic structural diagram of a long mold of the present invention;

FIG6 is a schematic structural diagram of a short mold of the present invention;

Markings in the figure: 1. Hydraulic cylinder one, 2. Hydraulic cylinder two, 3. Hydraulic cylinder three, 4. Hydraulic cylinder four, 5. Hydraulic cylinder five, 6. Hydraulic cylinder six, 7. Guide column, 8. Limit bolt, 9. Die sleeve, 91. Die sleeve body, 92. Step hole, 93. Bolt hole one, 94. Guide hole one, 10. Long movable plate, 11. Short movable plate, 12. Long pad, 13. Short pad, 14. Long mold, 141. Long mold body, 142. Mounting groove, 143. Fixing screw hole, 15. Short mold, 151. Short mold body, 152. Connecting screw hole, 16. Bolt hole two, 17. Guide hole two, 18. Hydraulic cylinder mounting hole, 19. Fixing hole.

DETAILED DESCRIPTION

The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings.

The present invention provides a hydraulic high-precision mold sleeve that can be opened and closed:

As shown in Figures 1 and 2, hydraulic cylinder 1 is fixedly set on the left side of the mold sleeve 9 near the rear end, and hydraulic cylinder 2 is fixedly set in front of the hydraulic cylinder 1; hydraulic cylinder 3 is fixedly set in the middle position of the front side of the mold sleeve 9, and hydraulic cylinder 4 is fixedly set in the middle position of the rear side of the mold sleeve 9; hydraulic cylinder 5 is fixedly set on the right side of the mold sleeve 9 near the rear end, and hydraulic cylinder 6 is fixedly set in front of the hydraulic cylinder 5; hydraulic cylinder 1, hydraulic cylinder 2, hydraulic cylinder 5, hydraulic cylinder 6 are arranged on the left and right sides of the mold sleeve 9 in a left-right corresponding manner; hydraulic cylinder 3 and hydraulic cylinder 4 are arranged on the front and rear sides of the mold sleeve 9 in a front-rear corresponding manner; the hydraulic cylinder 1 is fixedly installed on the left side of the mold sleeve body 91 near the rear end platform In the step hole 92, hydraulic cylinder 2 2 is fixedly installed in the step hole 92 on the left side of the mold sleeve body 91 near the front end; hydraulic cylinder 3 3 is installed in the step hole 92 in the center of the front side of the mold sleeve body 91, and hydraulic cylinder 3 4 is installed in the step hole 92 in the center of the rear side of the mold sleeve body 91; hydraulic cylinder 5 5 is installed in the step hole 92 on the right side of the mold sleeve body 91 near the rear end, and hydraulic cylinder 6 6 is installed in the step hole 92 on the right side of the mold sleeve body 91 near the front end; the telescopic rods of hydraulic cylinder 1 1, hydraulic cylinder 2 2, hydraulic cylinder 3 3, hydraulic cylinder 3 4, hydraulic cylinder 5 5 and hydraulic cylinder 6 6 pass through the step hole 92 of the mold sleeve body 91, the hydraulic cylinder mounting hole 18 of the long movable plate 10 or the short movable plate 11 and are fixedly connected to the center position of the outer side of the long mold 14 or the short mold 15. The above-mentioned hydraulic cylinder 1, hydraulic cylinder 2, hydraulic cylinder 3, hydraulic cylinder 3, hydraulic cylinder 4, hydraulic cylinder 5, and hydraulic cylinder 6 are fixedly connected to the hydraulic control valve and the hydraulic station through high-pressure oil pipes. The hydraulic station accurately transports hydraulic oil to hydraulic cylinder 1, hydraulic cylinder 2, hydraulic cylinder 3, hydraulic cylinder 3, hydraulic cylinder 4, hydraulic cylinder 5, and hydraulic cylinder 6 through the hydraulic control valve.

As shown in Figure 1, guide columns 7 are symmetrically arranged around the hydraulic cylinder 1, hydraulic cylinder 2, hydraulic cylinder 5, and hydraulic cylinder 6 on the left and right sides of the mold sleeve 9; guide columns 7 are symmetrically arranged around the hydraulic cylinder 3 3 and hydraulic cylinder 4 4 on the front and rear sides of the mold sleeve 9; limit bolts 8 are symmetrically arranged on the left and right sides of the hydraulic cylinder 3 3 and hydraulic cylinder 4 4; six guide columns 7 are symmetrically arranged on the left and right sides of the mold sleeve body 91 from front to back; four guide columns 7 are symmetrically arranged on the front and rear sides of the mold sleeve body 91 from left to right; the guide columns 7 are installed in the guide holes 1 94 on the left and right and front and rear side surfaces of the mold sleeve body 91 and the guide holes 2 17 on the long movable plate 10 and the short movable plate 11; the outer end of the guide column 7 extends to the outside of the mold sleeve body 91, and the inner end of the guide column 7 is flush with the inner side surfaces of the long movable plate 10 and the short movable plate 11, and is fixedly connected to the outer side surfaces of the long mold 14 and the short mold 15. The number of the guide posts 7 is determined according to the process requirements and the length or width of the mold sleeve body 91 .

As shown in Figs. 2, 3 and 4, the mold sleeve 9 is a hollow cubic structure; the mold sleeve 9 includes a mold sleeve body 91, which is a cubic body with upper and lower openings, and four step holes 92 are correspondingly arranged on the left and right sides of the mold sleeve body 91, and four bolt holes 93 are fixedly arranged on the front and rear sides of the mold sleeve body 91, and the step holes 92 are symmetrically arranged on both sides of the upper and lower sides; six guide holes 94 are symmetrically arranged on the left and right sides of the mold sleeve body 91, and four guide holes 94 are symmetrically arranged on the front and rear sides of the mold sleeve body 91. The bolt holes 93 on the front and rear sides of the mold sleeve body 91 are arranged in front and back correspondence with the bolt holes 16 of the short movable plate 11; the guide holes 1 94 on the left and right sides of the mold sleeve body 91 are arranged in left and right correspondence with the guide holes 17 on the long movable plate 10; the guide holes 1 94 on the front and rear sides of the mold sleeve body 91 are arranged in front and back correspondence with the guide holes 17 on the short movable plate 11. The number of the bolt holes 93 on the mold sleeve body 91 is determined according to the process requirements and the width of the mold sleeve body 91 , the width of the short moving plate 11 , the short pad 13 , and the short mold 15 .

As shown in Figures 3 and 4, the long movable plate 10 is symmetrically arranged on the left and right inner sides of the mold sleeve 9, the height of the long movable plate 10 is equal to the height of the mold sleeve 9, and the long movable plate 10 is two long movable plates 10 fixedly combined together; the short movable plate 11 is symmetrically arranged on the front and rear inner sides of the mold sleeve 9, the height of the short movable plate 11 is equal to the height of the mold sleeve 9, and the short movable plate 11 is two short movable plates 11 fixedly combined together; the long pad 12 is arranged in the middle position of the two long movable plates 10, and the short pad 13 is arranged in the middle position of the two short movable plates 11; the long mold 14 is arranged on the inner side of the long movable plate 10, and the short mold 15 is arranged on the inner side of the short movable plate 11.

As shown in Figures 1 to 6, the bolt hole 16 is symmetrically fixed in the upper and lower parts near the left and right ends of the short movable plate 11, the guide hole 17 is symmetrically arranged in the upper and lower parts of the long movable plate 10, and the guide hole 17 is symmetrically arranged at the left and right ends of the short movable plate 11; the hydraulic cylinder mounting hole 18 is symmetrically arranged in the middle position of the long movable plate 10, and the hydraulic cylinder mounting hole 18 is arranged on the short movable plate 11 at the center position of the short movable plate 11; the fixing hole 19 is arranged in the middle position of the long movable plate 10 and the short movable plate 11.

As shown in FIG1 , the limit bolts 8 are close to the left and right sides of the hydraulic cylinder 3 3 and the hydraulic cylinder 4 4, and are symmetrically arranged in four positions; the limit bolts 8 are installed in the bolt hole 1 93 of the die sleeve body 91 and the bolt hole 2 16 of the short movable plate 11 to tighten and fix the die sleeve body 91 and the short movable plate 11 into one body. The number of the limit bolts 8 is determined according to the process requirements and the width of the die sleeve body 91, the width of the short movable plate 11, the short pad 13, and the short mold 15, and is mainly used to fix the die sleeve body 91, the short movable plate 11, the short pad 13, and the short mold 15.

As shown in Figs. 5 and 6, the long mold 14 includes a long mold body 141, which is in the shape of a rectangular parallelepiped. The mounting groove 142 is arranged at the upper and lower inner positions of the long mold body 141. The mounting groove 142 is a flat convex shape. The mounting groove 142 vertically penetrates the long mold body 141, and the fixing screw hole 143 evenly passes through the upper and lower mounting grooves 142 horizontally. The short mold 15 includes a short mold body 151, which is in the shape of a rectangular parallelepiped. The connecting screw holes 152 are symmetrically arranged in the upper and lower middle of the short mold body 151. The long mold 14 symmetrically arranged on the mold sleeve body 91 and the short mold 15 symmetrically arranged on the mold sleeve body 91 are closely aligned to form a mold cavity for molding refractory bricks.

The mold installation method of the hydraulic high-precision mold sleeve that can be opened and closed and the mold cavity adjustment and demoulding molding method are as follows:

1. Mould installation and replacement method:

Step 1, installation of the die sleeve and hydraulic cylinder: first, fix the die sleeve 9 in the center of the workbench of the press machine, then fix the hydraulic cylinder 1 in the step hole 92 on the left side of the die sleeve body 91 near the rear end, and fix the hydraulic cylinder 2 in the step hole 92 on the left side of the die sleeve body 91 near the front end; hydraulic cylinder 3 is installed in the step hole 92 at the center of the front side of the die sleeve body 91, and hydraulic cylinder 3 is installed in the step hole 92 at the center of the rear side of the die sleeve body 91; hydraulic cylinder 5 is installed in the step hole 92 on the right side of the die sleeve body 91 near the rear end, and hydraulic cylinder 6 is installed in the step hole 92 on the right side of the die sleeve body 91 near the front end;

Step 2: Coordinated installation of the long movable plate, the short movable plate, the long pad plate, and the short pad plate: first, place the long pad plate 12 in the middle of the two long movable plates 10, and use bolts to pass through the fixing holes 19 on the two long movable plates 10 and the upper and lower parts of the long pad plate 12 to fix the two long movable plates 10 and the long pad plate 12 together; then place the short pad plate 13 in the middle of the two short movable plates 11, and use bolts to pass through the fixing holes 19 on the two short movable plates 11 and the upper and lower parts of the short pad plate 13 to fix the two short movable plates 11 and the short pad plate 13 together;

Step 3: Coordinated installation of the long movable plate, the short movable plate, the long pad, the short pad and the mold sleeve: the long movable plate 10 and the long pad 12 assembled in step 2 are symmetrically mounted on the left and right inner sides of the mold sleeve body 91 of the mold sleeve 9; at the same time, the short movable plate 11 and the short pad 13 are symmetrically mounted on the front and rear inner sides of the mold sleeve body 91 of the mold sleeve 9;

Step 4, the coordinated installation of the guide column, the limit bolt, the long movable plate and the short movable plate: 1. Installation of the guide column: pass the guide column 7 through the guide hole 1 94 on the left and right sides of the mold sleeve body 91, the long pad 12, and the guide hole 2 17 of the long movable plate 10, so that the inner end of the guide column 7 is fixed to the guide hole 2 17 of the inner long movable plate 10; at the same time, the guide column 7 passes through the guide hole 1 94 on the front and rear sides of the mold sleeve body 91, the short pad 13, and the guide hole 2 17 on the short movable plate 11, so that the inner end of the guide column 7 is fixed to the guide hole 2 17 on the inner short movable plate 11; 2. Installation of the limit bolt: pass the limit bolt 8 through the bolt hole 1 93 on the front and rear sides of the mold sleeve body 91, the short pad 13, and the bolt hole 2 16 on the short movable plate 11, so that the screw head of the limit bolt 8 is flush with the bolt hole 2 16 on the inner short movable plate 11, and the screw of the limit bolt 8 extends to the outside of the mold sleeve body 91 and is tightened and fixed with a nut;

Step 5. Coordinated installation of the long mold, short mold, hydraulic cylinder, mold sleeve, long movable plate, short movable plate, long pad and short pad: first, symmetrically install the long mold 14 on the inner side of the long movable plate 10, so that the long mold 14 is fitted and aligned with the long movable plate 10; at the same time, symmetrically install the short mold 15 on the inner side of the short movable plate 11, so that the short mold 15 is fitted and aligned with the short movable plate 11; then pass the telescopic rods of hydraulic cylinder 1, hydraulic cylinder 2, hydraulic cylinder 3, hydraulic cylinder 4, hydraulic cylinder 5, and hydraulic cylinder 6 through the step hole 92 of the mold sleeve body 91, the hydraulic cylinder mounting hole 18 of the long movable plate 10 or the short movable plate 11, and fix them to the center position of the outer side of the long mold 14 or the short mold 15.

Step six, replacement of long mold, short mold, hydraulic cylinder, mold sleeve, long movable plate, short movable plate, long pad, short pad and guide column: when it is necessary to replace any of the long mold 14, short mold 15, hydraulic cylinder one 1, hydraulic cylinder two 2, hydraulic cylinder three 3, hydraulic cylinder three 4, hydraulic cylinder five 5, hydraulic cylinder six 6, mold sleeve 9, long movable plate 10, short movable plate 11, long pad 12, short pad 13 and guide column 7, there is no need to disassemble the mold sleeve. Any of its components can be replaced by following the opposite operations of the installation actions of the relevant components in the above steps one to five.

2. Adjustment of mold cavity and demoulding method:

Step 1: Determine the mold adjustment reference: After the mold is installed, use the center of the mold sleeve on the press workbench as the adjustment reference; at the same time, loosen and remove the nuts on the limit bolts 8 on the front and rear sides of the mold sleeve 9;

Step 2, adjustment of mold cavity length and width: start hydraulic cylinder 1, hydraulic cylinder 2, hydraulic cylinder 3, hydraulic cylinder 3, hydraulic cylinder 4, hydraulic cylinder 5, hydraulic cylinder 6 and start working, control the stroke of telescopic rods of hydraulic cylinder 1, hydraulic cylinder 2, hydraulic cylinder 3, hydraulic cylinder 3, hydraulic cylinder 4, hydraulic cylinder 5, hydraulic cylinder 6 and hydraulic cylinder 6 according to the process size of refractory bricks, and push the long mold 14 symmetrically arranged on the left and right and the short mold 15 symmetrically arranged on the front and back to move toward the center of the mold sleeve body 91 under the guidance of the guide column 7, until they are closely aligned to form a mold cavity for forming refractory brick blanks; at this time, the center of the mold cavity formed by the long mold 14 symmetrically arranged on the left and right and the short mold 15 symmetrically arranged on the front and back coincides with the center of the mold sleeve body 91 of the mold sleeve 9;

Step 3, forming and demolding of refractory brick blanks: after the adjustment of the mold cavity in step 2 is completed, the feeding device automatically feeds the long mold 14 symmetrically arranged on the left and right and the short mold 15 symmetrically arranged on the front and back, and forms refractory brick blanks by bidirectional extrusion of the press; after the refractory brick blanks are formed, the upper hammer of the press drives the upper mold in the upper direction of the mold sleeve 9 to leave the upper part of the mold cavity of the mold sleeve 9, and at the same time, the telescopic rods of hydraulic cylinders 1, 2, 3, 4, 5, and 6 retract, and the long mold 14 and the short mold 15 are restored to the state before the size adjustment under the pull of the retraction action of the telescopic rods of hydraulic cylinders 1, 2, 3, 4, 5, and 6; at this time, the lower hammer and the lower mold located at the lower part of the press eject the formed refractory brick blanks from the upper part of the mold cavity of the mold sleeve 9, thereby realizing zero friction demolding of the refractory brick blanks.

Embodiment 1: The mounting groove 142 and the fixing screw hole 143 provided on the long mold 14 facilitate the installation of the mold capable of changing the special shapes of the upper and lower surfaces of the refractory brick blank, so as to achieve the purpose of changing the shapes of the upper and lower surfaces of the refractory brick blank.

Various modifications to the above embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims (2)

1. A hydraulic high-precision die sleeve capable of being opened and closed comprises a first hydraulic cylinder, a second hydraulic cylinder and a third hydraulic cylinder; the first hydraulic cylinder is fixedly arranged at the position, close to the rear end, of the left side surface of the die sleeve, and the second hydraulic cylinder is fixedly arranged at the front side position of the first hydraulic cylinder; the hydraulic cylinder III is fixedly arranged in the middle of the front side surface of the die sleeve, and the hydraulic cylinder IV is fixedly arranged in the middle of the rear side surface of the die sleeve; the hydraulic cylinder five is fixedly arranged at the position, close to the rear end, of the right side surface of the die sleeve, and the hydraulic cylinder six is fixedly arranged at the front side position of the hydraulic cylinder five; the first hydraulic cylinder and the second hydraulic cylinder are correspondingly arranged on the left side surface and the right side surface of the die sleeve; The hydraulic cylinder III and the hydraulic cylinder IV are correspondingly arranged on the front side surface and the rear side surface of the die sleeve in a front-rear manner; the method is characterized in that: guide posts are symmetrically arranged around the first hydraulic cylinder, the second hydraulic cylinder, the fifth hydraulic cylinder and the sixth hydraulic cylinder on the left side surface and the right side surface of the die sleeve; guide posts are symmetrically arranged on the front side surface and the rear side surface of the die sleeve around the hydraulic cylinder III and the hydraulic cylinder IV in an up-down mode, and six guide posts are symmetrically arranged on the left side surface and the right side surface of the die sleeve body from front to back in an up-down mode; four guide posts are symmetrically arranged on the front side surface and the rear side surface of the die sleeve body from left to right and up and down; the guide posts are arranged at the left and right sides of the die sleeve body, the first guide holes of the front side and the rear side and the guide Kong Erzhong on the long moving plate and the short moving plate; The outer end of the guide post extends to the outer side of the die sleeve body, and the inner end of the guide post is flush with the inner side surfaces of the long moving plate and the short moving plate and is fixedly connected with the outer side surfaces of the long die and the short die; the limiting bolts are vertically symmetrically arranged at the left side and the right side of the hydraulic cylinder III and the hydraulic cylinder IV, and the limiting bolts are close to the left side and the right side of the hydraulic cylinder III and the hydraulic cylinder IV and are vertically symmetrically arranged with four limiting bolts; the limiting bolt is arranged in a first bolt hole of the die sleeve body and a second bolt hole of the short moving plate, and the die sleeve body and the short moving plate are screwed and fixedly connected into a whole; the die sleeve is of a hollow tetragonal structure and comprises a die sleeve body, the die sleeve body is of a tetragonal body with an upper opening and a lower opening, four step holes are correspondingly formed in the front side and the rear side of the die sleeve body, and four first bolt holes are fixedly formed in the two sides of the step holes in the front side and the rear side of the die sleeve body and are symmetrically formed in the upper side and the lower side; Six guide holes are formed in the left side surface and the right side surface of the die sleeve body in an up-down symmetrical mode, four guide holes are formed in the front side surface and the rear side surface of the die sleeve body in an up-down symmetrical mode, and the first bolt holes in the front side surface and the rear side surface of the die sleeve body are arranged in a front-back corresponding mode with the second bolt holes in the short moving plate; the first guide holes on the left side surface and the right side surface of the die sleeve body are correspondingly arranged on the left side and the right side of the guide holes on the long moving plate; the first guide holes on the front side surface and the rear side surface of the die sleeve body are arranged in a front-rear corresponding way with the second guide holes on the short moving plate; the first hydraulic cylinder is fixedly arranged in a step hole, close to the rear end, of the left side surface of the die sleeve body, and the second hydraulic cylinder is fixedly arranged in a step hole, close to the front end, of the left side surface of the die sleeve body; The hydraulic cylinder III is arranged in a step hole in the center of the front side surface of the die sleeve body, and the hydraulic cylinder III is arranged in a step hole in the center of the rear side surface of the die sleeve body; the hydraulic cylinder III is arranged in a step hole on the right side surface of the die sleeve body, which is close to the rear end, and the hydraulic cylinder III is arranged in a step hole on the right side surface of the die sleeve body, which is close to the front end; the telescopic rods of the first hydraulic cylinder, the second hydraulic cylinder, the third hydraulic cylinder, the fourth hydraulic cylinder, the fifth hydraulic cylinder and the sixth hydraulic cylinder penetrate through the stepped holes of the die sleeve body and the hydraulic cylinder mounting holes of the long moving plate or the short moving plate and are fixedly connected with the center position of the outer side surface of the long die or the short die; the long moving plates are symmetrically arranged on the left inner side surface and the right inner side surface of the die sleeve, the height of the long moving plates is equal to that of the die sleeve, and the long moving plates are formed by fixedly combining two long moving plates; The short moving plates are symmetrically arranged on the front inner side surface and the rear inner side surface of the die sleeve, the height of the short moving plates is equal to that of the die sleeve, and the short moving plates are formed by fixedly combining two short moving plates; the long backing plate is arranged at the middle position of the two long moving plates, and the short backing plate is arranged at the middle position of the two short moving plates; the long die is arranged on the inner side of the long moving plate and comprises a long die body, the long die body is cuboid, the mounting grooves are arranged on the upper inner side and the lower inner side of the long die body and are in flat convex shapes, the mounting grooves longitudinally penetrate through the long die body, and the fixing screw holes uniformly and transversely penetrate through the upper mounting grooves and the lower mounting grooves; the short mould is arranged on the inner side of the short moving plate and comprises a short mould body, the short mould body is cuboid, and connecting screw holes are symmetrically formed in the upper middle and the lower middle of the short mould body; The second bolt hole is vertically and symmetrically arranged at the position close to the left end and the right end of the short moving plate, the second guide hole is vertically and symmetrically arranged at the upper position and the lower position of the long moving plate, and the guide Kong Erzuo is symmetrically arranged at the left end and the right end of the short moving plate; the hydraulic cylinder mounting holes are symmetrically arranged at the middle position of the long moving plate, are arranged on the short moving plate and are arranged at the center position of the short moving plate; the fixed hole is arranged at the middle position of the long moving plate and the short moving plate.

2. The method for adjusting and demolding a mold cavity of a retractable hydraulic high-precision mold sleeve according to claim 1, which is characterized in that: step one, determining a die adjustment reference: after the die is installed, taking the center of a die sleeve on a working table of the press machine as an adjusting reference; simultaneously unscrewing and disassembling nuts on limit bolts on the front side surface and the rear side surface of the die sleeve; step two, adjusting the length and width of a die cavity of the die: starting the first, second, third, fourth, fifth and sixth hydraulic cylinders to work, controlling the stroke amounts of the first, second, third, fourth, fifth and sixth hydraulic cylinders according to the technological dimensions of the refractory bricks, and pushing the long dies symmetrically arranged on the left and right and the short dies symmetrically arranged on the front and rear to move towards the center of the die sleeve body until the die dies are closely aligned to form a die cavity for forming the refractory brick blank through the extending action of the first, second, third, fourth, fifth and sixth hydraulic cylinders; at the moment, the center of a die cavity formed by a long die and a short die which are symmetrically arranged left and right and a short die which are symmetrically arranged front and back is overlapped with the center of a die sleeve body of the die sleeve; step three, molding and demolding the refractory brick blank: after the die cavity of the die in the second step is adjusted, the material distribution device automatically distributes materials in a long die symmetrically arranged left and right and a short die symmetrically arranged front and back, and a press machine is used for bidirectional extrusion molding to form a refractory brick blank; after the fire-resistant brick blank is formed, an upper hammer head of the press drives an upper die in the upper direction of a die sleeve to leave the upper part of a die cavity of the die sleeve, and simultaneously, a first hydraulic cylinder, a second hydraulic cylinder, a third hydraulic cylinder, a fourth hydraulic cylinder, a fifth hydraulic cylinder and a sixth hydraulic cylinder are retracted, and the long die and the short die are restored to the state before size adjustment under the pulling of the retraction actions of the first hydraulic cylinder, the second hydraulic cylinder, the third hydraulic cylinder, the fourth hydraulic cylinder, the fifth hydraulic cylinder and the sixth hydraulic cylinder; at the moment, the lower hammer head and the lower die which are positioned at the lower part of the press machine eject the molded refractory brick blank from the upper part of the die cavity of the die sleeve, so that zero friction demoulding of the refractory brick blank is realized.