CN115319892A

CN115319892A - Bidirectional-pressurizing refractory brick forming press

Info

Publication number: CN115319892A
Application number: CN202211102156.1A
Authority: CN
Inventors: 曾亚宏; 杨海军; 王鸿妹; 刘纪华
Original assignee: Luoyang Maile Refractory Co ltd; Luoyang Xingda Technology Co ltd; Luoyang Daimengte Intelligent Equipment Manufacturing Co ltd
Current assignee: Luoyang Maile Refractory Co ltd; Luoyang Xingda Technology Co ltd; Luoyang Daimengte Intelligent Equipment Manufacturing Co ltd
Priority date: 2022-09-09
Filing date: 2022-09-09
Publication date: 2022-11-11
Anticipated expiration: 2042-09-09
Also published as: CN115319892B

Abstract

The invention belongs to the technical field of bidirectional pressure forming of refractory bricks, and discloses a bidirectional pressure refractory brick forming press, wherein a die upper plate is fixedly arranged at the lower part of an upper hammer head; the sliding rails are fixedly arranged at the left side and the right side of the upper side in the pressure frame; the forming die is fixedly arranged at the upper part of the forming die bracket, and the forming die bracket is fixedly arranged at the bottom in the pressure frame; the lower hydraulic cylinder is fixedly arranged in the middle of the bottom of the forming die support. The beneficial effects of the invention are as follows: 1. the consistency of the density of the upper surface and the lower surface of the refractory brick is improved, and the forming quality of the refractory brick is improved. 2. The disassembly-free die sleeve is realized, and the die assembly replacement mode is changed; 3. the friction force of demoulding after the fire-resistant green brick is formed is reduced to zero, and the forming quality of the fire-resistant green brick is improved; 4. the automatic adjustment of the extrusion thickness of the material is realized by using an intelligent algorithm of a motion controller; thereby realizing the accurate control of the material extrusion thickness in the die cavity of the forming die.

Description

Two-way pressurized refractory brick forming press

Technical Field

The invention belongs to the technical field of bidirectional pressure forming of refractory bricks, and particularly relates to a bidirectional pressure refractory brick forming press.

Background

The forming press for refractory bricks is an important device for forming refractory bricks with relatively high degree of automation. The method has wide application in the compression molding industry of refractory bricks. The refractory brick molding press has two types, namely an upper pressing type and a double-sided pressing type, and the currently used double-sided pressing refractory brick molding press realizes the double-sided pressing effect through the up-and-down floating of a die sleeve instead of simultaneously pressing an upper oil cylinder and a lower oil cylinder; the lower oil cylinder is used for ejecting the formed refractory brick out of the die sleeve, so that the ejection and the die stripping are realized. Therefore, in the technical field of refractory brick forming, the so-called double-surface pressurizing refractory brick forming hydraulic machine is not a true double-surface pressurizing forming hydraulic machine and cannot play a due role in the consistency of the density of the upper surface and the lower surface in the refractory brick forming process.

The current hydraulic press for forming refractory bricks mainly has the technical problems that: 1. in the process of forming the refractory brick material in the forming mold, the density of the upper surface and the lower surface of the refractory brick is inconsistent due to different up-down extrusion forces, so that the forming quality of the refractory brick is influenced; 2. when the forming die on the existing hydraulic press for forming refractory bricks is assembled and replaced, a die sleeve needs to be disassembled, the die needs to be replaced and the die needs to be assembled, and the efficiency of replacing and assembling the die is low; 3. by adopting the traditional refractory brick forming die, the demoulding friction force is large after the refractory brick blank is formed, so that the defect of demoulding damage of the refractory brick is easily caused, and the forming quality of the refractory brick is influenced; 4. the extrusion depth of the refractory brick molding hydraulic press to the molding die cannot be accurately controlled, and meanwhile, the error of the extrusion depth cannot be intelligently adjusted. The inventor develops a refractory brick forming press capable of bidirectional pressurization based on the defects in the prior art, and can well solve the technical problems in the prior art.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems, the invention provides a bidirectional-pressurizing refractory brick forming press which is simple, scientific and reasonable in design structure; the invention can solve the problem that the compactness of the upper surface and the lower surface of a refractory brick is inconsistent and the forming quality of the refractory brick is influenced because the upper extrusion force and the lower extrusion force of a refractory brick material are different in the forming process of a forming die, and simultaneously solves the problems that the forming die on the existing hydraulic press for forming the refractory brick needs to be disassembled and replaced and assembled when the die is assembled and replaced, and the replacing and assembling die has low efficiency, and also solves the problem that the forming quality of the refractory brick is influenced because the traditional refractory brick forming die is adopted, the demoulding friction force is large after the refractory brick blank is formed, and the refractory brick is easy to generate the demoulding damage defect; the problem that the hydraulic press for forming the refractory bricks can not accurately control the extrusion depth of the forming die and can not intelligently adjust the error of the extrusion depth is solved.

The technical scheme adopted by the invention for solving the technical problem is as follows: a bidirectional-pressurizing refractory brick molding press comprises a press frame, an end face connecting plate and an upper hydraulic cylinder; the pressure frame is a cuboid structure with an opening at the front and the back and closed at the upper and the lower parts; the end face connecting plate is circular, the end face connecting plate is fixedly arranged in the middle of the upper part of the pressure frame, and the upper hydraulic cylinder is arranged in the center of the end face connecting plate; the sliding plate is fixedly arranged at the lower part of the telescopic cylinder of the upper hydraulic cylinder, the upper hammer head is fixedly arranged at the central position of the bottom of the sliding plate, and the upper plate of the die is fixedly arranged at the lower part of the upper hammer head; the sliding rails are fixedly arranged at the left side and the right side of the upper side in the pressure rack, the sliding rails are arranged in a bilateral symmetry manner, and the sliding plates are sleeved on the sliding rails and can slide up and down in a matched manner; the forming die is fixedly arranged at the upper part of the forming die bracket, and the forming die bracket is fixedly arranged at the bottom in the pressure rack; the lower hydraulic cylinder is fixedly arranged in the middle of the bottom of the forming die support, and the bottom of the lower hydraulic cylinder is fixedly connected with the bottom of the inner side of the pressure rack; the demolding oil cylinders are fixedly arranged at the left side and the right side of the forming mold support, four demolding oil cylinders are arranged, two demolding oil cylinders are in a group, the bottom of each demolding oil cylinder is fixedly connected with the inner bottom of the pressure frame, and the upper parts of the demolding oil cylinders penetrate through the left side and the right side of the forming mold support; the lower hammer head is fixedly arranged at the upper part of the lower hydraulic cylinder telescopic cylinder, a lower die plate is arranged at the upper part of the lower hammer head, and the lower hammer head and the lower die plate penetrate through the center of the forming die support and extend to the upper part of the forming die support; the first displacement sensor is fixedly arranged at a corresponding position on the right side of the upper part of the forming die and is fixedly connected with the inner wall of the right side of the pressure rack; the second displacement sensor is fixedly arranged at the right side position corresponding to the upper part of the lower plate of the die and is fixedly connected with the right inner wall of the pressure rack; the hydraulic servo system is fixedly connected with the upper hydraulic cylinder and the lower hydraulic cylinder through pipelines respectively, and the hydraulic servo system is used for realizing automatic accurate control of the extrusion thickness of the refractory brick molding material in two directions by the upper die plate and the lower die plate through automatic accurate control of the upper hydraulic cylinder and the lower hydraulic cylinder.

The sliding plate comprises a sliding plate body, the sliding plate body is square, sliding grooves are formed in the left side and the right side of the sliding plate body, and the sliding grooves are sleeved on the sliding rails.

The forming die 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 face of the die sleeve, and the second hydraulic cylinder is fixedly arranged at the position, close to the front end, 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 V is fixedly arranged on the right side surface of the die sleeve and close to the rear end, and the hydraulic cylinder VI is fixedly arranged at the front side position of the hydraulic cylinder V; the hydraulic cylinder I, the hydraulic cylinder II, the hydraulic cylinder V and the hydraulic cylinder VI are arranged on the left side surface and the right side surface of the die sleeve in a left-right corresponding manner; 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-back manner; guide posts are symmetrically arranged on the left side surface and the right side surface of the die sleeve around the first hydraulic cylinder, the second hydraulic cylinder, the fifth hydraulic cylinder and the sixth hydraulic cylinder up and down; 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 from top to bottom; the limiting bolts are symmetrically arranged at the left side and the right side of the third hydraulic cylinder and the fourth hydraulic cylinder; the die sleeve is of a hollow tetragonal structure and comprises a die sleeve body, the die sleeve body is a tetragonal body with an upper opening and a lower opening, four stepped holes are correspondingly formed in the left side surface and the right side surface of the die sleeve body in the front-back direction, and four bolt holes are fixedly formed in the front side surface and the rear side surface of the die sleeve body and are symmetrically formed in the up-down direction; six guide holes I are symmetrically formed in the left side surface and the right side surface of the die sleeve body from top to bottom, and four guide holes I are symmetrically formed in the front side surface and the rear side surface of the die sleeve body from top to bottom; the first hydraulic cylinder is fixedly arranged in a stepped hole close to the rear end on the left side surface of the die sleeve body, and the second hydraulic cylinder is fixedly arranged in a stepped hole close to the front end on the left side surface of the die sleeve body; the hydraulic cylinder III is arranged in a stepped hole in the center of the front side surface of the die sleeve body, and the hydraulic cylinder III is arranged in a stepped hole in the center of the rear side surface of the die sleeve body; the hydraulic cylinder V is installed in the stepped hole close to the rear end on the right side surface of the die sleeve body, and the hydraulic cylinder VI is installed in the stepped hole close to the front end on the right side surface of the die sleeve body; telescopic rods of the hydraulic cylinder I, the hydraulic cylinder II, the hydraulic cylinder III, the hydraulic cylinder V and the hydraulic cylinder VI penetrate through the stepped hole of the die sleeve body and the hydraulic cylinder mounting hole of the long movable plate or the short movable plate to be fixedly connected with the center position of the outer side face of the long die or the short die; the long moving plates are symmetrically arranged on the left inner side and the right inner side of the die sleeve, the height of each long moving plate is equal to that of the die sleeve, and the long moving plates are formed by fixedly combining two long moving plates; the short movable plates are symmetrically arranged on the front inner side and the rear inner side of the die sleeve, the height of the short movable plates is equal to that of the die sleeve, and the short movable plates are formed by fixedly combining two short movable plates together; the long backing plate is arranged in the middle of the two long moving plates, and the short backing plate is arranged in the middle of the two short moving plates; the long mould is arranged on the inner side of the long moving plate, and the short mould is arranged on the inner side of the short moving plate; the bolt holes II are vertically symmetrically and fixedly arranged at the positions close to the left end and the right end of the short movable plate, the guide holes II are vertically symmetrically arranged at the upper position and the lower position of the long movable plate, and the guide holes II are horizontally symmetrically arranged at the left end and the right end of the short movable plate; the hydraulic cylinder mounting holes are symmetrically arranged in the left and right directions in the middle of the long movable plate, and the hydraulic cylinder mounting holes are arranged in the center of the short movable plate on the short movable plate; the fixing hole is arranged at the middle position above and below the long moving plate and the short moving plate.

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 up and down; 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 up and down; the guide posts are arranged in the guide holes I on the left side, the right side, the front side and the rear side of the die sleeve body and the guide holes II on the long movable plate and the short movable 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 faces of the long movable plate and the short movable plate and is fixedly connected with the outer side faces of the long die and the short die.

The four limiting bolts are arranged close to the left side and the right side of the hydraulic cylinder III and the hydraulic cylinder IV and are arranged symmetrically up and down; and the limit bolt is arranged in the bolt hole I of the die sleeve body and the bolt hole II of the short movable plate to screw and fixedly connect the die sleeve body and the short movable plate into a whole.

The first bolt holes on the front side and the rear side of the die sleeve body correspond to the second bolt holes of the short movable plate in the front-rear direction; a first guide hole on the left side surface and a second guide hole on the right side surface of the die sleeve body are arranged in a left-right corresponding mode with a second guide hole on the long movable plate; the first guide hole on the front side surface and the second guide hole on the front side surface and the rear side surface of the die sleeve body are arranged in a front-back corresponding mode.

The long die comprises a long die body, the long die body is cuboid, mounting grooves are formed in the upper inner side and the lower inner side of the long die body, the mounting grooves are in a flat-lying convex shape and longitudinally penetrate through the long die body, and fixing screw holes uniformly and transversely penetrate through the upper mounting grooves and the lower mounting grooves; the short die comprises a short die body, the short die body is cuboid, and connecting screw holes are symmetrically formed in the upper middle part and the lower middle part of the short die body; the long dies symmetrically arranged on the left and right of the die sleeve body are closely aligned with the short dies symmetrically arranged on the front and back of the die sleeve body to form a die cavity for molding the refractory bricks.

The forming die support comprises four guide rods, the bottom of each guide rod is fixedly arranged at the edge positions of the left side and the right side of the bottom in the pressure frame, the upper part of each guide rod penetrates through a die fixing plate to be installed in a matched mode with the die fixing plate, a stripping plate is arranged at the lower part of the die fixing plate and is square, and the stripping plate is installed on the four guide rods; the middle positions of the die fixing plate and the stripper plate are provided with square holes, and the square holes in the die fixing plate and the square holes in the stripper plate are arranged in a vertically corresponding mode.

The demoulding oil cylinders are fixedly arranged at the left side and the right side of the demoulding plate, the bottom of the demoulding oil cylinder is fixedly connected with the inner bottom of the pressure frame, and the upper part of the telescopic cylinder of the demoulding oil cylinder penetrates through the left side and the right side of the demoulding plate and is fixedly connected with the demoulding plate; the lower hammer head and the lower die plate penetrate through the centers of the die fixing plate and the stripper plate and extend to the upper part of the die fixing plate.

The hydraulic servo system comprises a motion controller, the motion controller is fixedly connected with a first servo valve or a second servo valve through a lead, and the first servo valve or the second servo valve is fixedly arranged on the input end of a hydraulic oil pipeline of an upper hydraulic cylinder or a lower hydraulic cylinder; and closed-loop control is formed between the upper hydraulic cylinder or the lower hydraulic cylinder and the servo valve I or the servo valve II, and closed-loop control is formed between the servo valve I or the servo valve II and the valve core position and the pipeline flow in the body of the servo valve I or the servo valve II.

1. The installation and replacement process of the forming die comprises the following steps:

step one, installing a die sleeve and a hydraulic cylinder: firstly, fixedly mounting a die sleeve at the center of a workbench of a press machine, then fixedly mounting a first hydraulic cylinder in a stepped hole close to the rear end on the left side surface of a die sleeve body, and fixedly mounting a second hydraulic cylinder in a stepped hole close to the front end on the left side surface of the die sleeve body; the hydraulic cylinder III is arranged in a stepped hole in the center of the front side surface of the die sleeve body, and the hydraulic cylinder III is arranged in a stepped hole in the center of the rear side surface of the die sleeve body; the hydraulic cylinder II is arranged in the stepped hole close to the front end of the die sleeve body;

step two, the long movable plate and the short movable plate are installed with the long backing plate and the short backing plate in a matching way: firstly, a long base plate is placed between two long moving plates, bolts penetrate through fixing holes in the two long moving plates and the upper and lower parts of the long base plate, and the two long moving plates and the long base plate are fixedly connected into a whole; then the short base plate is placed between the two short moving plates, and a bolt penetrates through the fixing holes in the two short moving plates and the upper part and the lower part of the short base plate to fixedly connect the two short moving plates and the short base plate into a whole;

step three: the long movable plate, the short movable plate, the long base plate, the short base plate and the die sleeve are matched and arranged: respectively and symmetrically installing the long movable plate and the long backing plate which are installed in a matched mode in the step two on the left inner side face and the right inner side face of the die sleeve body of the die sleeve; meanwhile, the short movable plate and the short base plate are respectively and symmetrically arranged on the front inner side and the rear inner side of the die sleeve body of the die sleeve;

step four, the guide post, the limiting bolt are installed with the long movable plate and the short movable plate in a matching mode: 1. installation of the guide post: the guide post penetrates through a guide hole I on the left side surface and a guide hole II on the right side surface of the die sleeve body, the long base plate and the long moving plate, so that the inner side end of the guide post is fixed with the long moving plate guide hole II on the inner side; meanwhile, the guide post penetrates through a guide hole I on the front side surface and the rear side surface of the die sleeve body, the short base plate and a guide hole II on the short movable plate, so that the inner side end of the guide post is fixed with the guide hole II on the short movable plate on the inner side; 2. installing a limiting bolt: a limiting bolt penetrates through a first bolt hole on the front side surface and the rear side surface of the die sleeve body, a short base plate and a second bolt hole on the short movable plate, so that the screw head of the limiting bolt is flush with a second bolt hole on the inner short movable plate, and a screw of the limiting bolt extends to the outer side of the die sleeve body and is screwed and fixed by a nut;

step five, the long mould, the short mould, the hydraulic cylinder, the mould sleeve, the long movable plate, the short movable plate, the long cushion plate and the short cushion plate are installed in a matching way: firstly, respectively and symmetrically installing long dies on the inner side surfaces of long moving plates to enable the long dies to be attached and aligned with the long moving plates; simultaneously, the short dies are respectively and symmetrically arranged on the inner side surfaces of the short movable plates, so that the short dies are attached to and aligned with the short movable plates; and then, the telescopic rods of the first hydraulic cylinder, the second hydraulic cylinder, the third hydraulic cylinder, the fifth hydraulic cylinder and the sixth hydraulic cylinder penetrate through the stepped hole of the die sleeve body and the hydraulic cylinder mounting hole of the long movable plate or the short movable plate to be fixedly connected with the center position of the outer side face of the long die or the short die.

Step six, replacement of the long die, the short die, the hydraulic cylinder, the die sleeve, the long movable plate, the short movable plate, the long base plate, the short base plate and the guide column: when any part of the long die, the short die, the first hydraulic cylinder, the second hydraulic cylinder, the third hydraulic cylinder, the fifth hydraulic cylinder, the sixth hydraulic cylinder, the die sleeve, the long moving plate, the short moving plate, the long base plate, the short base plate and the guide column needs to be replaced, the die sleeve does not need to be disassembled, and replacement of any part can be achieved according to operation of reverse installation actions of the related parts in the first step to the fifth step.

2. Adjusting the forming die:

step one, determining a mold adjustment reference: after the die is installed, taking the center of a die sleeve on a press workbench as an adjusting reference; simultaneously, loosening and disassembling nuts on the limiting bolts on the front side surface and the rear side surface of the die sleeve;

step two, adjusting the length and the width of a die cavity of the die: starting the hydraulic cylinder I, the hydraulic cylinder II, the hydraulic cylinder III, the hydraulic cylinder V and the hydraulic cylinder VI to work, controlling the stroke amounts of the telescopic rods of the hydraulic cylinder I, the hydraulic cylinder II, the hydraulic cylinder III, the hydraulic cylinder V and the hydraulic cylinder VI according to the technical size of the refractory brick, controlling the stretching actions of the telescopic rods of the hydraulic cylinder I, the hydraulic cylinder II, the hydraulic cylinder III, the hydraulic cylinder V and the hydraulic cylinder VI on the forming die by using the motion controller, and pushing the long dies which are symmetrically arranged at the left and right sides and the short dies which are symmetrically arranged at the front and back sides to move towards the center of the die sleeve body under the guide coordination of the guide columns until the long dies and the short dies are tightly adhered and aligned to form a die cavity for forming the refractory brick blank; at the moment, the center of a die cavity formed by the long dies symmetrically arranged at the left and right sides and the short dies symmetrically arranged at the front and back sides coincides with the center of the die sleeve body of the die sleeve.

3. The working process of the bidirectional pressurizing refractory brick forming press comprises the following steps:

after the installation and adjustment of the forming die are finished, the long dies symmetrically arranged left and right in the die sleeve body and the short dies symmetrically arranged front and back are tightly attached and closed, at the moment, the motion control of a hydraulic servo system simultaneously transmits a control instruction to the upper hydraulic cylinder and the lower hydraulic cylinder, the telescopic cylinders of the upper hydraulic cylinder and the lower hydraulic cylinder extend to move, and the upper hammer head and the upper die plate push the lower hammer head and the lower die plate downwards by the upper hydraulic cylinder and push the lower hydraulic cylinder upwards and press the central position of the forming die simultaneously; meanwhile, the motion controller sends control commands of feeding and distributing to the feeding robot, the feeding robot distributes materials in a die cavity of the forming die, at the moment, the upper hammer head and the upper die plate continue to push downwards, the lower hammer head and the lower die plate continue to push upwards, when the upper die plate moves to the position of the first displacement sensor and the lower die plate moves to the position of the second displacement sensor, position signals of the upper die plate and the lower die plate of the lower hydraulic cylinder of the upper hydraulic cylinder detected by the first displacement sensor and the second displacement sensor are transmitted to the motion controller, the motion controller calculates and processes the received position signals of the upper die plate and the lower die plate of the lower hydraulic cylinder of the upper hydraulic cylinder and transmits the control commands to the first servo valve and the second servo valve, the first servo valve and the second servo valve receive the control commands and then output hydraulic flow through calculation and amplification, the opening of the first servo valve and the second servo valve core is controlled, and finally the modulated hydraulic flow is converted and output to a pipeline; meanwhile, the pipeline conveys the hydraulic quantity converted by the servo valve I and the servo valve II to the hydraulic cylinder, and the upper hydraulic cylinder and the lower hydraulic cylinder stretch and retract to realize bidirectional pressure forming on the material in the forming die; when the first displacement sensor and the second displacement sensor detect that the material extrusion thickness required by the process has an error of 0.1 millimeter, the upper hydraulic cylinder and the lower hydraulic cylinder feed back error signals to the motion controller, the motion controller calculates through an intelligent algorithm and transmits the error signals to the first servo valve and the second servo valve, the first servo valve and the second servo valve automatically adjust the opening of a valve core and convey the adjusted flow or pressure to oil cylinders of the upper hydraulic cylinder and the lower hydraulic cylinder through pipelines, and the automatic adjustment of the material extrusion thickness is realized; thereby realizing the accurate control of the material extrusion thickness in the die cavity of the forming die. After refractory brick materials in a forming mold are subjected to bidirectional pressure forming, a motion controller controls the return stroke of an upper hydraulic cylinder, the motion controller controls the retraction of a first hydraulic cylinder, a second hydraulic cylinder, a third hydraulic cylinder, a fifth hydraulic cylinder and a sixth hydraulic cylinder to open a mold cavity formed by a long mold and a short mold which are symmetrically arranged from front to back, the motion controller controls the return stroke of the cylinders of a lower hydraulic cylinder, and simultaneously the motion controller controls four demolding cylinders to synchronously retract downwards to drive the forming mold to move downwards, when the hydraulic cylinders and the four demolding cylinders retract to the bottom, the formed refractory bricks are discharged, and finally, the motion controller controls a brick taking robot to take away the formed refractory bricks.

In the invention, a first hydraulic cylinder is fixedly arranged at the position, close to the rear end, of the left side surface of a die sleeve, and a second hydraulic cylinder is fixedly arranged at the position of the front side 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 V is fixedly arranged on the right side surface of the die sleeve and close to the rear end, and the hydraulic cylinder VI is fixedly arranged at the front side position of the hydraulic cylinder V; the first hydraulic cylinder is fixedly arranged in a stepped hole close to the rear end on the left side surface of the die sleeve body, and the second hydraulic cylinder is fixedly arranged in a stepped hole close to the front end on the left side surface of the die sleeve body; the hydraulic cylinder III is arranged in a stepped hole in the center of the front side surface of the die sleeve body, and the hydraulic cylinder III is arranged in a stepped hole in the center of the rear side surface of the die sleeve body; the hydraulic cylinder V is installed in the stepped hole close to the rear end on the right side surface of the die sleeve body, and the hydraulic cylinder VI is installed in the stepped hole close to the front end on the right side surface of the die sleeve body; the telescopic rods of the first hydraulic cylinder, the second hydraulic cylinder, the third hydraulic cylinder, the fifth hydraulic cylinder and the sixth hydraulic cylinder penetrate through the stepped hole of the die sleeve body and the hydraulic cylinder mounting hole of the long movable plate or the short movable plate to be fixedly connected with the center position of the outer side face of the long die or the short die. The hydraulic cylinder I, the hydraulic cylinder II, the hydraulic cylinder III, the hydraulic cylinder V and the hydraulic cylinder VI are arranged, so that on one hand, the long die and the short die are tightly pushed and limited; on the other hand, the long dies symmetrically arranged on the left and right sides and the short dies symmetrically arranged in the front and back sides are pushed to move towards the center of the die sleeve body by utilizing the telescopic action of the first hydraulic cylinder, the second hydraulic cylinder, the third hydraulic cylinder, the fifth hydraulic cylinder and the sixth hydraulic cylinder telescopic rod under the guiding coordination of the guide post, so that the long dies, the short dies and the like can move in stroke.

In the invention, guide posts are symmetrically arranged on the left side surface and the right side surface of the die sleeve up and down around the first hydraulic cylinder, the second hydraulic cylinder, the fifth hydraulic cylinder and the sixth hydraulic cylinder; 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 from top to bottom; 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 up and down; 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 up and down; the guide posts are arranged in the guide holes I on the left side, the right side, the front side and the rear side of the die sleeve body and the guide holes II on the long movable plate and the short movable 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 faces of the long movable plate and the short movable plate and is fixedly connected with the outer side faces of the long die and the short die. The main purposes of the above arrangement are: by matching the guide column with the first hydraulic cylinder, the second hydraulic cylinder, the third hydraulic cylinder, the fifth hydraulic cylinder and the sixth hydraulic cylinder, on one hand, the long die and the short die can be stably moved under the telescopic pushing of the first hydraulic cylinder, the third hydraulic cylinder, the fifth hydraulic cylinder and the sixth hydraulic cylinder; on the other hand, the adjustment of the sizes of the long die and the short die taking the die sleeve as the center is more accurate; on the other hand, the deformation of the long die and the short die in the die sleeve can be effectively prevented.

In the invention, the limiting bolts are symmetrically arranged at the left side and the right side of the hydraulic cylinder III and the hydraulic cylinder IV from top to bottom; the four limiting bolts are arranged close to the left side and the right side of the hydraulic cylinder III and the hydraulic cylinder IV and are arranged symmetrically up and down; and the limiting bolt is arranged in the bolt hole I of the die sleeve body and the bolt hole II of the short movable plate to screw and fixedly connect the die sleeve body and the short movable plate into a whole. The main purposes of the above arrangement are: on one hand, when the positions of the long die and the short die are adjusted, the nut on the limiting bolt is in a loosening and unloading state, and the limiting bolt plays a role in guiding, so that the moving stability of the short die is improved; on the other hand, when the long die and the short die are adjusted in place, the nut is arranged on the limiting bolt to play a role in limiting and fixing the positions of the short movable plate and the short die.

According to the invention, the die sleeve comprises a die sleeve body, the die sleeve body is a square body with an upper opening and a lower opening, four stepped holes are correspondingly arranged in the front and the back of the left side surface and the right side surface of the die sleeve body, and four bolt holes I are fixedly arranged on the two sides of the stepped holes on the front side surface and the back side surface of the die sleeve body and are symmetrically arranged in the up-and-down direction; six guide holes I are symmetrically formed in the left side surface and the right side surface of the die sleeve body from top to bottom, and four guide holes I are symmetrically formed in the front side surface and the rear side surface of the die sleeve body from top to bottom. The main purpose of the stepped bore provided therein is: and the first hydraulic cylinder, the second hydraulic cylinder, the third hydraulic cylinder, the fifth hydraulic cylinder and the sixth hydraulic cylinder are firmly arranged in the step holes. The main purpose of the first bolt hole is that: the limiting bolt can conveniently penetrate through the first bolt hole to limit and fix the positions of the short movable plate and the short die. The main purposes in which the guide holes are provided are: the guide posts are conveniently connected with the long movable plate and the short movable plate through the guide holes.

In the invention, the long movable plates are symmetrically arranged on the left inner side and the right inner side of the die sleeve, the height of the long movable plates is equal to that of the die sleeve, and the long movable plates are formed by fixedly combining two long movable plates together; the short movable plates are symmetrically arranged on the front inner side and the rear inner side of the die sleeve, the height of the short movable plates is equal to that of the die sleeve, and the short movable plates are formed by fixedly combining two short movable plates together; the long backing plate is arranged in the middle of the two long moving plates, and the short backing plate is arranged in the middle of the two short moving plates; the long mold is arranged on the inner side of the long moving plate, and the short mold is arranged on the inner side of the short moving plate. The main purposes of arranging the long moving plate, the long backing plate, the short moving plate and the short backing plate are as follows: on one hand, when the press is used for forming the refractory brick blank, the long movable plate, the long backing plate, the short movable plate and the short backing plate play a role in buffering radial pressure; on the other hand, the die sleeve body, the long die and the short die are protected from being impacted by radial pressure, and the deformation of the die sleeve and the die cavity is effectively avoided.

In the invention, bolt holes II are vertically symmetrically and fixedly arranged at the positions close to the left end and the right end of the short moving plate, guide holes II are vertically symmetrically arranged at the upper position and the lower position of the long moving plate, and the guide holes II are horizontally symmetrically arranged at the left end and the right end of the short moving plate; the hydraulic cylinder mounting holes are symmetrically arranged in the left and right directions in the middle of the long movable plate, and the hydraulic cylinder mounting holes are arranged in the center of the short movable plate on the short movable plate; the fixing hole is arranged at the middle position between the upper part and the lower part of the long moving plate and the short moving plate. The second bolt hole is arranged for the main purpose that: the die sleeve body and the short movable plate are screwed and fixedly connected into a whole by arranging the bolt holes II and installing the limiting bolts in the bolt holes I of the die sleeve body and the bolt holes II of the short movable plate; on one hand, when the positions of the long die and the short die are adjusted, the nut on the limiting bolt is in a loosening and unloading state, and the limiting bolt plays a role in guiding, so that the moving stability of the short die is improved; on the other hand, when the long die and the short die are adjusted in place, the nut is arranged on the limiting bolt to play a role in limiting and fixing the positions of the short movable plate and the short die. The second guide hole is arranged for the main purpose that: through the arrangement of the guide hole II and the guide hole I on the die sleeve body and the cooperation with the guide column, on one hand, the long die and the short die can stably move under the telescopic pushing of the hydraulic cylinder I, the hydraulic cylinder III, the hydraulic cylinder V and the hydraulic cylinder VI; on the other hand, the adjustment of the size of the long die and the short die taking the die sleeve as the center is more accurate; on the other hand, the deformation of the long mold and the short mold in the mold sleeve can be effectively prevented.

According to the invention, the first step to the sixth step of the mounting and replacing method of the die jointly act, on one hand, the disassembly-free die sleeve is realized, and the assembling and replacing mode of the die is changed; the efficiency of replacing and assembling the die is improved, and the labor intensity is reduced; on the other hand, when the mold is assembled and replaced, the contact ratio between the mold center and the mold sleeve center is improved, and the manufacturing execution systems with high automation degree for distributing, demolding and manipulator carrying are in linkage fit, so that an intelligent refractory brick molding production operation procedure is formed.

According to the invention, the adjustment of the mold cavity of the mold and the combined action of the first step to the third step in the demolding and molding method, on one hand, the demolding friction force after the refractory brick blank is molded is reduced to zero, the molding quality of the refractory brick blank is improved, and the demolding defect caused by demolding after the refractory brick blank is molded is effectively avoided; on the other hand, the stability and the die cavity accuracy of the refractory brick forming die are improved, the die deformation is avoided, and the forming quality of refractory bricks can be effectively controlled.

According to the invention, a forming die support comprises four guide rods, the bottoms of the guide rods are fixedly arranged at the edge positions of the left side and the right side of the bottom in a pressure rack, the upper parts of the guide rods penetrate through a die fixing plate to be installed in a matched manner with the die fixing plate, a stripping plate is arranged at the lower part of the die fixing plate and is square, and the stripping plate is arranged on the four guide rods; a square hole is formed in the middle of the mold fixing plate and the middle of the demolding plate, and the upper square hole of the mold fixing plate and the square hole in the demolding plate are arranged in a vertically corresponding mode. The main purposes of this arrangement are: through the arrangement of the guide rod, the die fixing plate, the stripping plate and the square hole, on one hand, a stable supporting effect is provided for the installation of the forming die; on the other hand, the pushing of the lower hydraulic cylinder and the demoulding oil cylinder is matched with the combined action of the guide rod, so that the up-and-down stable movement of the forming mould is realized, and meanwhile, the up-and-down movement of the forming mould is utilized to realize the zero-friction demoulding of the formed refractory brick.

According to the invention, the demoulding oil cylinders are fixedly arranged at the left side and the right side of the demoulding plate, the bottom of the demoulding oil cylinder is fixedly connected with the inner bottom of the pressure frame, and the upper part of the telescopic cylinder of the demoulding oil cylinder penetrates through the left side and the right side of the demoulding plate and is fixedly connected with the demoulding plate; the lower hammer head and the lower die plate penetrate through the centers of the die fixing plate and the stripper plate and extend to the upper part of the die fixing plate. The main purposes of the above arrangement are: through the arrangement of a demoulding oil cylinder, a guide rod, a mould fixing plate, a demoulding plate and a square hole; on the one hand, when the upper hydraulic cylinder and the lower hydraulic cylinder stretch and move down, the upper hammer head and the upper die plate are extruded downwards, and the lower hammer head and the lower die plate are extruded upwards at the same time, so that the lifting of the demolding oil cylinder plays a role in sharing the extrusion force of the upper hydraulic cylinder borne by the lower hydraulic cylinder, and the service life of the lower hydraulic cylinder is protected. On the other hand, the combined action of the demoulding oil cylinder and the lower hydraulic cylinder realizes the up-and-down movement of the forming mould after the refractory brick is formed, and realizes the zero-friction demoulding of the formed refractory brick.

The hydraulic servo system comprises a motion controller, wherein the motion controller is fixedly connected with a first servo valve or a second servo valve through a lead, and the first servo valve or the second servo valve is fixedly arranged on the input end of a hydraulic oil pipeline of an upper hydraulic cylinder or a lower hydraulic cylinder; and closed-loop control is formed between the upper hydraulic cylinder or the lower hydraulic cylinder and the servo valve I or the servo valve II, and closed-loop control is formed between the servo valve I or the servo valve II and the valve core position and the pipeline flow in the body of the servo valve I or the servo valve II. The main purposes of the above arrangement are: through the arrangement of the motion controller, the first servo valve, the second servo valve, the upper hydraulic cylinder and the lower hydraulic cylinder, closed-loop control formed by the positions of the first servo valve or the second servo valve and the valve core and the flow of the pipeline and closed-loop control formed between the first servo valve or the second servo valve and the first servo valve or the second servo valve form a mutually-associated nested structure; the automatic adjustment of the extrusion thickness of the material is realized by utilizing an intelligent algorithm of a motion controller; thereby realizing the accurate control of the material extrusion thickness in the die cavity of the forming die.

The invention has the beneficial effects that: 1. through the combined action of the upper hydraulic cylinder and the lower hydraulic cylinder, the downward extrusion of the upper plate of the die is realized, the lower plate of the die is upwards extruded to form bidirectional pressure, the consistency of the density of the upper surface and the lower surface of the refractory brick is improved, and the forming quality of the refractory brick is improved. 2. The disassembly-free die sleeve is realized, and the die assembly replacement mode is changed; the efficiency of replacing and assembling the die is improved; 3. the friction force of demoulding after the refractory brick blank is formed is reduced to zero, the forming quality of the refractory brick blank is improved, and the quality defect caused by demoulding after the refractory brick blank is formed is effectively avoided; 4. the automatic adjustment of the extrusion thickness of the material is realized by utilizing an intelligent algorithm of a motion controller; thereby realizing the accurate control of the material extrusion thickness in the die cavity of the forming die.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a partial enlarged view of the sliding plate, upper hammer head, upper die plate, forming die, and forming die holder of the present invention;

FIG. 3 is a schematic structural view of the lower hammer head and the lower die plate according to the present invention;

FIG. 4 is a schematic structural view of a forming mold according to the present invention;

FIG. 5 is a schematic view of the structure of the die case of the present invention;

FIG. 6 is a schematic view of the construction of the long movable plate of the present invention;

FIG. 7 is a schematic view of the short movable plate structure of the present invention;

FIG. 8 is a schematic structural view of an elongated die of the present invention;

FIG. 9 is a schematic structural view of a short mold of the present invention;

FIG. 10 is a block diagram of the hydraulic servo control for the upper and lower cylinders of the present invention;

the labels in the figure are: 1. a press frame 2, an end face connecting plate 3, an upper hydraulic cylinder 4, a sliding plate 41, a sliding plate body 42, a sliding groove 5, a sliding rail 6, an upper hammer head 7, a die upper plate 8, a forming die 81, a hydraulic cylinder I82, a hydraulic cylinder II, a hydraulic cylinder 83, a hydraulic cylinder III, a hydraulic cylinder 84, a hydraulic cylinder IV, a hydraulic cylinder 85, a hydraulic cylinder V, a hydraulic cylinder VI, a hydraulic cylinder 87, a guide post 88, a limit bolt 89, a die sleeve 891, a die sleeve body 892, a step hole 893, a bolt hole I894, a guide hole I, a guide hole 810, a long moving plate 811, a short moving plate 812, a long cushion plate 813, a short cushion plate 814 and a long die, 8141, a long die body, 8142, a mounting groove, 8143, a fixing screw hole, 815, a short die, 8151, a short die body, 8152, a connecting screw hole, 816, a bolt hole II, 817, a guide hole II, 818, a hydraulic cylinder mounting hole, 819, a fixing hole, 9, a forming die support, 91, a guide rod, 92, a die fixing plate, 93, a demoulding plate, 94, a square hole, 10, a lower hydraulic cylinder, 11, a demoulding cylinder, 12, a lower hammer head, 13, a die lower plate, 14, a displacement sensor I, 15, a displacement sensor II, 16, a hydraulic servo system, 161, a motion controller, 162, a servo valve I, 163 and a servo valve II.

Detailed Description

The following detailed description of embodiments of the invention is provided in connection with the accompanying drawings.

The invention provides a hydraulic high-precision die sleeve capable of being opened and closed, which comprises:

as shown in fig. 1, the press frame 1 is a cuboid structure with a front opening and a back opening and a top closed and a bottom closed, the upper part of the press frame 1 is used for installing the upper hydraulic cylinder 3, the inside of the press frame 1 is used for installing the sliding plate 4, the sliding rail 5, the upper ram 6, the upper die plate 7, the forming die 8, the forming die support 9, the lower hydraulic cylinder 10, the demoulding cylinder 11, the lower ram 12 and the lower die plate 13.

As shown in fig. 1, the end face connecting plate 2 is used to fixedly mount the upper hydraulic cylinder 3, and the end face connecting plate 2 fixes the upper hydraulic cylinder 3 at the upper center position of the press frame 1.

As shown in fig. 1, the sliding plate 4 includes a sliding plate body 41, the sliding plate body 41 is square, sliding grooves 42 are formed on the left and right sides of the sliding plate body 41, and the sliding grooves 42 are sleeved on the sliding rail 5; the width of the sliding groove 42 is larger than that of the sliding rail 5, and the sliding groove 42 moves up and down along the sliding rail 5 under the telescopic action of the upper hydraulic cylinder 3, so that the refractory brick molding raw material in the molding die 8 is extruded and molded by the upper hammer head 6 and the die upper plate 7.

As shown in fig. 4 and 5, the first hydraulic cylinder 81 is fixedly arranged at the position close to the rear end of the left side surface of the die sleeve 89, and the second hydraulic cylinder 82 is fixedly arranged at the front position of the first hydraulic cylinder 81; a third hydraulic cylinder 83 is fixedly arranged in the middle of the front side surface of the die sleeve 89, and a fourth hydraulic cylinder 84 is fixedly arranged in the middle of the rear side surface of the die sleeve 89; a fifth hydraulic cylinder 85 is fixedly arranged on the right side surface of the die sleeve 89 close to the rear end, and a sixth hydraulic cylinder 86 is fixedly arranged on the front side of the fifth hydraulic cylinder 85; the hydraulic cylinder I81, the hydraulic cylinder II 82, the hydraulic cylinder V85 and the hydraulic cylinder VI 86 are arranged on the left side surface and the right side surface of the die sleeve 89 in a left-right corresponding manner; the hydraulic cylinder three 83 and the hydraulic cylinder four 84 are arranged on the front side surface and the rear side surface of the die sleeve 89 in a front-rear corresponding mode; the first hydraulic cylinder 81 is fixedly arranged in a stepped hole 892 close to the rear end on the left side surface of the die sleeve body 891, and the second hydraulic cylinder 82 is fixedly arranged in a stepped hole 892 close to the front end on the left side surface of the die sleeve body 891; the hydraulic cylinder three 83 is installed in a stepped hole 892 in the center of the front side of the die sleeve body 891, and the hydraulic cylinder three 84 is installed in a stepped hole 892 in the center of the rear side of the die sleeve body 891; a fifth hydraulic cylinder 85 is installed in the stepped hole 892 close to the rear end on the right side surface of the die sleeve body 891, and a sixth hydraulic cylinder 86 is installed in the stepped hole 892 close to the front end on the right side surface of the die sleeve body 891; the telescopic rods of the hydraulic cylinder I81, the hydraulic cylinder II 82, the hydraulic cylinder III 83, the hydraulic cylinder III 84, the hydraulic cylinder V85 and the hydraulic cylinder VI 86 penetrate through a step hole 892 of the die sleeve body 891 and a hydraulic cylinder mounting hole 818 of the long movable plate 810 or the short movable plate 811 to be fixedly connected with the center position of the outer side surface of the long die 814 or the short die 815. The hydraulic cylinder I81, the hydraulic cylinder II 82, the hydraulic cylinder III 83, the hydraulic cylinder III 84, the hydraulic cylinder V85 and the hydraulic cylinder VI 86 are fixedly connected with the hydraulic control valve, the motion controller and the hydraulic station through high-pressure oil pipes, the hydraulic station transmits a precise hydraulic flow control command to the hydraulic control valve through the motion controller, and precisely transmits hydraulic oil to the hydraulic cylinder I81, the hydraulic cylinder II 82, the hydraulic cylinder III 83, the hydraulic cylinder III 84, the hydraulic cylinder V85 and the hydraulic cylinder VI 86, so that precise telescopic action of the hydraulic cylinder I81, the hydraulic cylinder II 82, the hydraulic cylinder III 83, the hydraulic cylinder III 84, the hydraulic cylinder V85 and the hydraulic cylinder VI 86 is realized.

As shown in fig. 4, guide posts 87 are symmetrically arranged on the left side surface and the right side surface of the die sleeve 89 up and down around the hydraulic cylinder I81, the hydraulic cylinder II 82, the hydraulic cylinder V85 and the hydraulic cylinder VI 86; guide posts 87 are symmetrically arranged on the front side surface and the rear side surface of the die sleeve 89 up and down around the hydraulic cylinder three 83 and the hydraulic cylinder four 84; the limiting bolts 88 are symmetrically arranged at the left side and the right side of the hydraulic cylinder III 83 and the hydraulic cylinder IV 84 from top to bottom; six guide posts 87 are symmetrically arranged on the left and right side surfaces of the die sleeve body 891 from front to back; four guide posts 87 are symmetrically arranged on the front and rear side surfaces of the die sleeve body 891 from left to right; the guide posts 87 are arranged in the guide holes 894 on the left, right, front and rear sides of the die sleeve body 891 and the guide holes 817 on the long movable plate 810 and the short movable plate 811; the outer ends of the guide posts 87 extend outside the die case body 891, and the inner ends of the guide posts 87 are flush with the inner sides of the long and short moving plates 810 and 811 and are fixedly connected to the outer sides of the long and short dies 814 and 815. The number of the guide posts 87 is determined according to the process requirements and the length or width of the die case body 891.

As shown in fig. 5, 6 and 7, the die case 89 is a hollow tetragonal structure; the die sleeve 89 comprises a die sleeve body 891, the die sleeve body 891 is a square body with an upper opening and a lower opening, four stepped holes 892 are correspondingly arranged in front and at back of the left side surface and the right side surface of the die sleeve body 891, and four bolt holes 893 are fixedly arranged on two sides of the stepped holes 892 in the front side surface and the back side surface of the die sleeve body 891 in an up-and-down symmetrical manner; six first guide holes 894 are symmetrically arranged on the left side and the right side of the die sleeve body 891, and four first guide holes 894 are symmetrically arranged on the front side and the rear side of the die sleeve body 891. The first bolt holes 893 on the front and rear side surfaces of the die sleeve body 891 are arranged in front and rear correspondence with the second bolt holes 816 of the short movable plate 811; a first guide hole 894 on the left side and a second guide hole 817 on the left side and the right side of the die sleeve body 891 are arranged in a left-right corresponding mode; the first guide holes 894 on the front and rear sides of the die sleeve body 891 are arranged corresponding to the second guide holes 817 on the short movable plate 811. The number of the first bolt holes 893 on the die case body 891 is determined according to the process requirements and the width of the die case body 891, the width of the short moving plate 811, the short backing plate 813 and the width of the short die 815.

As shown in fig. 5 and 6, the long moving plates 810 are symmetrically arranged on the left inner side and the right inner side of the die sleeve 89, the height of the long moving plates 810 is equal to that of the die sleeve 89, and the long moving plates 810 are two long moving plates 810 which are fixedly combined together; the short moving plates 811 are symmetrically arranged on the front inner side and the rear inner side of the die sleeve 89, the height of the short moving plates 811 is equal to that of the die sleeve 89, and the short moving plates 811 are two short moving plates 811 which are fixedly combined together; a long pad 812 is disposed at the middle position of the two long moving plates 810, and a short pad 813 is disposed at the middle position of the two short moving plates 811; long die 814 is disposed inside the long moving plate 810 and short die 815 is disposed inside the short moving plate 811.

As shown in fig. 3 to 9, bolt holes two 816 are vertically symmetrically and fixedly provided at positions near left and right ends of short moving plate 811, guide holes two 817 are vertically symmetrically provided at positions above and below long moving plate 810, and guide holes two 817 are horizontally symmetrically provided at positions at left and right ends of short moving plate 811; the hydraulic cylinder mounting holes 818 are arranged in the middle of the long moving plate 810 in a bilateral symmetry mode, and the hydraulic cylinder mounting holes 818 are arranged on the short moving plate 811 and are arranged in the center of the short moving plate 811; a fixing hole 819 is provided at an intermediate position above and below the long moving plate 810 and the short moving plate 811.

As shown in fig. 3, four limit bolts 88 are symmetrically arranged up and down near the left and right sides of the third hydraulic cylinder 83 and the fourth hydraulic cylinder 84; the limit bolt 88 is installed in the first bolt hole 893 of the die sleeve body 891 and the second bolt hole 816 of the short moving plate 811 to fasten and fixedly connect the die sleeve body 891 and the short moving plate 811 into a whole. The number of the limit bolts 88 is determined according to the process requirements and the width of the die case body 891, the width of the short movable plate 811, the short shim plate 813 and the width of the short die 815, and mainly achieves the purpose of fixing the die case body 891, the short movable plate 811, the short shim plate 813 and the short die 815.

As shown in fig. 8 and 9, the long mold 814 includes a long mold body 8141, the long mold body 8141 is a rectangular parallelepiped, the installation grooves 8142 are disposed at upper and lower inner sides of the long mold body 8141, the installation grooves 8142 are in a flat-lying convex shape, the installation grooves 8142 longitudinally penetrate through the long mold body 8141, and the fixing screw holes 8143 uniformly and transversely penetrate through the upper and lower installation grooves 8142. The short die 815 comprises a short die body 8151 and a cuboid short die body 8151, wherein connection screw holes 8152 are symmetrically formed in the upper middle portion and the lower middle portion of the short die body 8151. The long molds 814 symmetrically arranged on the left and right of the die sleeve body 891 are closely aligned with the short molds 815 symmetrically arranged on the front and back of the die sleeve body 891 to form a mold cavity for molding refractory bricks.

As shown in fig. 1 and 2, the forming die holder 9 is used for supporting and mounting the forming die 8, and also for providing a fixed mounting platform for the stripper cylinder 11; in the process of the telescopic action of the lower hydraulic cylinder 10, the lower hammer 12 and the lower die plate 13 are pushed to extrude the refractory brick molding material upwards, so that the material is extruded at the lower position.

As shown in fig. 1 and 2, four guide rods 91 are provided, the bottom of each guide rod 91 is fixedly arranged at the edge positions of the left side and the right side of the bottom in the pressure frame 1, the upper part of each guide rod 91 passes through a die fixing plate 92 to be matched with the die fixing plate 92, a stripper plate 93 is arranged at the lower part of the die fixing plate 92, the stripper plate 93 is square, and the stripper plates 93 are arranged on the four guide rods 91; the demoulding oil cylinders 11 are fixedly arranged at the left side and the right side of the demoulding plate 93, the bottom of the demoulding oil cylinder 11 is fixedly connected with the inner bottom of the pressure frame 1, and the upper parts of the telescopic cylinders of the demoulding oil cylinders 11 penetrate through the left side and the right side of the demoulding plate 93 and are fixedly connected with the demoulding plate 93. The up-and-down movement of the mold fixing plate 92 and the forming mold 8 is realized by the telescopic action of the telescopic cylinder of the demolding oil cylinder 11 and the lifting guide function of the guide rod 91, so that the zero-friction demolding of the molded refractory brick blank is finally realized.

As shown in fig. 1 and 2, a lower hammer head 12 is fixedly arranged at the upper part of a telescopic cylinder of the lower hydraulic cylinder 10, and a lower die plate 13 is arranged at the upper part of the lower hammer head 12; the lower ram 12 and the lower die plate 13 extend through the centers of the die fixing plate 92 and the stripper plate 93 to the upper portion of the die fixing plate 92. Under the telescopic action of the telescopic cylinder of the lower hydraulic cylinder 10, the lower hammer 12 and the lower die plate 13 are pushed to penetrate through the demoulding plate 93 and the square hole 94 on the die fixing plate 92 to apply lower extrusion force for extruding materials to be formed to the forming die 8, and under the matching of the upper hydraulic cylinder 3, the upper hammer 6 and the upper die plate 7, the bidirectional force application to the forming die 8 is realized.

As shown in fig. 10, the hydraulic servo system 16 includes a motion controller 13, the motion controller 13 is disposed in an electric control cabinet of the bi-directional pressurized refractory brick forming press, the motion controller 13 is fixedly connected to a first servo valve 162 or a second servo valve 163 through a wire, and the first servo valve 162 or the second servo valve 163 is fixed to an input end of a hydraulic oil pipeline of the upper hydraulic cylinder 3 or the lower hydraulic cylinder 10.

As shown in fig. 10, a closed-loop control is formed between the upper hydraulic cylinder 3 or the lower hydraulic cylinder 10 and the first servo valve 162 or the second servo valve 163, and a closed-loop control is formed between the first servo valve 162 or the second servo valve 163 and the spool position and the pipe flow rate in the body thereof. The closed-loop control formed by the servo valve I162 or the servo valve II 163 and the valve core position and the pipeline flow and the closed-loop control formed between the upper hydraulic cylinder 3 or the lower hydraulic cylinder 10 and the servo valve I162 or the servo valve II 163 form a mutually related nested structure, and the intelligent correction of the extrusion error is carried out by the motion controller 161 by adopting a commonly used pid, fuzzy pid or neural network algorithm.

As shown in fig. 1, the first displacement sensor 14 and the second displacement sensor 15 are absolute value type displacement sensors.

1. The mounting and replacing process of the forming die comprises the following steps:

step one, installing a die sleeve and a hydraulic cylinder: firstly, fixedly installing a die sleeve 89 at the center of a workbench of a press, then fixedly installing a first hydraulic cylinder 81 in a stepped hole 892 close to the rear end on the left side surface of a die sleeve body 891, and fixedly installing a second hydraulic cylinder 82 in the stepped hole 892 close to the front end on the left side surface of the die sleeve body 891; the hydraulic cylinder three 83 is installed in a stepped hole 892 in the center of the front side of the die sleeve body 891, and the hydraulic cylinder three 84 is installed in a stepped hole 892 in the center of the rear side of the die sleeve body 891; a fifth hydraulic cylinder 85 is installed in the stepped hole 892 close to the rear end on the right side surface of the die sleeve body 891, and a sixth hydraulic cylinder 86 is installed in the stepped hole 892 close to the front end on the right side surface of the die sleeve body 891;

step two, the long movable plate and the short movable plate are installed with the long backing plate and the short backing plate in a matching way: firstly, a long base plate 812 is placed between two long moving plates 810, bolts penetrate through fixing holes 819 in the two long moving plates 810 and the upper portion and the lower portion of the long base plate 812, and the two long moving plates 810 and the long base plate 812 are fixedly connected into a whole; then the short backing plate 813 is placed between the two short moving plates 811, and bolts are used for penetrating through the fixing holes 819 on the two short moving plates 811 and the upper and lower parts of the short backing plate 813 to fixedly connect the two short moving plates 811 and the short backing plate 813 into a whole;

step three: the long movable plate, the short movable plate, the long base plate, the short base plate and the die sleeve are matched and installed: respectively and symmetrically installing the long movable plate 810 and the long cushion plate 812 which are installed in the step two in a matched manner on the left inner side surface and the right inner side surface of the die sleeve body 891 of the die sleeve 89; meanwhile, the short moving plate 811 and the short backing plate 813 are respectively and symmetrically arranged on the front and rear inner side surfaces of the die sleeve body 891 of the die sleeve 89;

step four, the guide post, the limiting bolt are installed with the long movable plate and the short movable plate in a matching mode: 1. installation of the guide post: the guide column 87 passes through a first guide hole 894 on the left side and the right side of the die sleeve body 891, the long cushion plate 812 and a second guide hole 817 of the long moving plate 810, so that the inner end of the guide column 87 is fixed with the second guide hole 817 of the long moving plate 810 on the inner side; meanwhile, the guide post 87 passes through a first guide hole 894 on the front side and the rear side of the die sleeve body 891, a short backing plate 813 and a second guide hole 817 on the short movable plate 811, so that the inner end of the guide post 87 is fixed with the second guide hole 817 on the inner short movable plate 811; 2. installing a limiting bolt: the limiting bolt 88 penetrates through a first bolt hole 893 on the front side surface and the rear side surface of the die sleeve body 891, a short cushion plate 813 and a second bolt hole 816 on the short moving plate 811, so that the screw head of the limiting bolt 88 is flush with the second bolt hole 816 on the inner short moving plate 811, and the screw rod of the limiting bolt 88 extends to the outer side of the die sleeve body 891 and is screwed and fixed by a nut;

step five, the long mould, the short mould and the hydraulic cylinder, the mould sleeve, the long movable plate, the short movable plate, the long backing plate and the short backing plate are installed in a matching way: firstly, respectively and symmetrically installing long dies 814 on the inner side surfaces of the long movable plates 810, so that the long dies 814 are attached to and aligned with the long movable plates 810; meanwhile, short molds 815 are respectively and symmetrically arranged on the inner side surfaces of the short moving plates 811, so that the short molds 815 are attached to and aligned with the short moving plates 811; then the telescopic rods of the hydraulic cylinder I81, the hydraulic cylinder II 82, the hydraulic cylinder III 83, the hydraulic cylinder III 84, the hydraulic cylinder V85 and the hydraulic cylinder VI 86 penetrate through the stepped hole 892 of the die sleeve body 891 and the hydraulic cylinder mounting hole 818 of the long moving plate 810 or the short moving plate 811 to be fixedly connected with the central position of the outer side surface of the long die 814 or the short die 815.

Step six, replacement of the long die, the short die, the hydraulic cylinder, the die sleeve, the long movable plate, the short movable plate, the long base plate, the short base plate and the guide post: when any of the long die 814, the short die 815, the first hydraulic cylinder 81, the second hydraulic cylinder 82, the third hydraulic cylinder 83, the third hydraulic cylinder 84, the fifth hydraulic cylinder 85, the sixth hydraulic cylinder 86, the die case 89, the long moving plate 810, the short moving plate 811, the long cushion plate 812, the short cushion plate 813 and the guide posts 87 needs to be replaced, the die case does not need to be disassembled, and the replacement of any part can be realized according to the operation opposite to the installation action of the relevant part in the steps one to five.

2. Adjusting the forming die:

step one, determining a mold adjustment reference: after the die is installed, taking the center of a die sleeve on a press workbench as an adjusting reference; simultaneously, the nuts on the limiting bolts 88 on the front side surface and the rear side surface of the die sleeve 89 are unscrewed and removed;

step two, adjusting the length and the width of a die cavity of the die: starting a hydraulic cylinder I81, a hydraulic cylinder II 82, a hydraulic cylinder III 83, a hydraulic cylinder III 84, a hydraulic cylinder V85 and a hydraulic cylinder VI 86 to start working, controlling the stroke amounts of telescopic rods of the hydraulic cylinder I81, the hydraulic cylinder II 82, the hydraulic cylinder III 83, the hydraulic cylinder III 84, the hydraulic cylinder V85 and the hydraulic cylinder VI 86 according to the technical size of the refractory brick, controlling the extending actions of the telescopic rods of the hydraulic cylinder I81, the hydraulic cylinder II 82, the hydraulic cylinder III 83, the hydraulic cylinder III 84, the hydraulic cylinder V85 and the hydraulic cylinder VI 86 on the forming die 8 by a motion controller 161, and pushing long dies 814 symmetrically arranged at the left and right sides and short dies 815 symmetrically arranged at the front and the rear sides to move towards the center of a die sleeve body 891 under the guiding coordination of a guide post 87 until the dies are closely aligned to form a die cavity for forming the refractory brick blank; at this time, the center of the cavity formed by the long mold 814 and the short mold 815, which are symmetrically arranged in the left-right direction, coincides with the center of the die case body 891 of the die case 89.

after the installation and adjustment of the forming mold are completed, the long molds 814 symmetrically arranged left and right and the short molds 815 symmetrically arranged front and back in the mold sleeve body 891 are closed tightly, at this time, the motion control 161 of the hydraulic servo system 16 simultaneously transmits a control command to the upper hydraulic cylinder 3 and the lower hydraulic cylinder 10, the telescopic cylinders of the upper hydraulic cylinder 3 and the lower hydraulic cylinder 10 are opened, the upper hammer 6 and the mold upper plate 7 push the lower part of the upper hydraulic cylinder 3 downwards, and the lower hammer 12 and the mold lower plate 13 push the lower part of the lower hydraulic cylinder 10 upwards and pressurize the central position of the forming mold 8; meanwhile, the motion controller 161 sends a control command of feeding and distributing to the feeder robot, the feeding robot distributes to the cavity of the forming mold 8, at this time, the upper hammer 6 and the upper mold plate 7 continue to push downwards, the lower hammer 12 and the lower mold plate 13 continue to push upwards, when the upper mold plate 7 moves to the position of the first displacement sensor 14, the lower mold plate 13 moves to the position of the second displacement sensor 15, the position signals of the upper mold plate 7 of the upper hydraulic cylinder 3 and the lower mold plate 13 of the lower hydraulic cylinder 10, which are detected by the first displacement sensor 14 and the second displacement sensor 15, are transmitted to the motion controller 161, the motion controller 161 calculates and processes the received position signals of the upper mold plate 7 of the upper hydraulic cylinder 3 and the lower mold plate 13 of the lower hydraulic cylinder 10, and transmits the control command to the first servo valve 162 and the second servo valve 163, the first servo valve 162 and the second servo valve 163 receive the control command, and then calculate and amplify the hydraulic flow, and output the opening of the first servo valve 162 and the second valve 163, and finally convert the modulated hydraulic quantity to the pipeline; meanwhile, the pipeline conveys the hydraulic quantity converted by the first servo valve 162 and the second servo valve 163 to the hydraulic cylinder, and the upper hydraulic cylinder and the lower hydraulic cylinder perform telescopic actions to realize bidirectional pressurization forming on the material in the forming die 8; when the first displacement sensor 14 and the second displacement sensor 15 detect that an error exists with a material extrusion thickness of 0.1 millimeter required by the process, the upper hydraulic cylinder 3 and the lower hydraulic cylinder 10 feed back error signals to the motion controller, the motion controller calculates through an intelligent algorithm, the error signals are transmitted to the first servo valve 162 and the second servo valve 163, the first servo valve 162 and the second servo valve 163 automatically adjust the opening of the valve core, and the adjusted flow or pressure is transmitted to the oil cylinders of the upper hydraulic cylinder 3 and the lower hydraulic cylinder 10 through pipelines, so that the automatic adjustment of the material extrusion thickness is realized; thereby realizing the accurate control of the extrusion thickness of the material in the die cavity of the forming die 9. After refractory brick materials in the forming mold 8 are subjected to bidirectional pressure forming, the motion controller 161 controls the return stroke of the upper hydraulic cylinder 3, at this time, the motion controller 161 controls the first hydraulic cylinder 81, the second hydraulic cylinder 82, the third hydraulic cylinder 83, the third hydraulic cylinder 84, the fifth hydraulic cylinder 85 and the sixth hydraulic cylinder 86 to retract, so that mold cavities formed by the long molds 814 and the short molds 815 symmetrically arranged at the left and right sides of the long molds 814 and the short molds 815 symmetrically arranged at the front and the back sides are opened, at the same time, the motion controller 161 controls the cylinder return stroke of the lower hydraulic cylinder 10, and at the same time, the motion controller 161 controls the four demolding cylinders 11 to synchronously retract downwards, so that the forming mold 8 is driven to move downwards, when the lower hydraulic cylinder 10 and the four demolding cylinders 11 retract to the bottom, the formed refractory bricks leak out, and finally, the motion controller 161 controls a brick machine worker to take the formed refractory bricks away.

First embodiment, the installation grooves 8142 and the fixing screw holes 8143 provided on the long mold 814 facilitate installation of a mold capable of changing the specific shape of the upper and lower surfaces of a green brick, so as to achieve the purpose of changing the shape of the upper and lower surfaces of the green brick.

Specific examples of hydraulic servo systems for the upper and lower hydraulic cylinders 3, 10:

the first embodiment,

The motion controller 13 is fixedly connected with a first servo valve 162 through a lead, and the first servo valve 162 is fixed on the input end of the hydraulic oil pipeline of the upper hydraulic cylinder 3.

The first embodiment,

The motion controller 13 is fixedly connected with a second servo valve 163 through a lead, and the second servo valve 163 is fixed at the input end of the hydraulic oil pipeline of the lower hydraulic cylinder 10.

Various modifications to the above-described embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A bidirectional-pressurizing refractory brick molding press comprises a press frame, an end face connecting plate and an upper hydraulic cylinder; the pressure frame is a cuboid structure with an opening at the front and the back and closed at the upper and the lower parts; the end face connecting plate is circular, the fixed upper portion intermediate position that sets up at pressure frame of end face connecting plate, its characterized in that: the upper hydraulic cylinder is arranged in the center of the end face connecting plate; the sliding plate is fixedly arranged at the lower part of the telescopic cylinder of the upper hydraulic cylinder, the upper hammer head is fixedly arranged at the central position of the bottom of the sliding plate, and the upper plate of the die is fixedly arranged at the lower part of the upper hammer head; the sliding rails are fixedly arranged at the left side and the right side of the upper side in the pressure rack, the sliding rails are arranged in a bilateral symmetry manner, and the sliding plates are sleeved on the sliding rails and can slide up and down in a matched manner; the forming die is fixedly arranged at the upper part of the forming die bracket, and the forming die bracket is fixedly arranged at the bottom in the pressure stand; the lower hydraulic cylinder is fixedly arranged in the middle of the bottom of the forming die support, and the bottom of the lower hydraulic cylinder is fixedly connected with the bottom of the inner side of the pressure frame; the demolding oil cylinders are fixedly arranged at the left side and the right side of the forming mold support, four demolding oil cylinders are arranged, two demolding oil cylinders are in a group, the bottom of each demolding oil cylinder is fixedly connected with the inner bottom of the pressure frame, and the upper parts of the demolding oil cylinders penetrate through the left side and the right side of the forming mold support; the lower hammer head is fixedly arranged at the upper part of the lower hydraulic cylinder telescopic cylinder, a lower die plate is arranged at the upper part of the lower hammer head, and the lower hammer head and the lower die plate penetrate through the center of the forming die support and extend to the upper part of the forming die support; the first displacement sensor is fixedly arranged at a corresponding position on the right side of the upper part of the forming die and is fixedly connected with the inner wall of the right side of the pressure rack; a second displacement sensor is fixedly arranged at the right side position corresponding to the upper part of the lower die plate, and is fixedly connected with the right inner wall of the pressure frame; the hydraulic servo system is fixedly connected with the upper hydraulic cylinder and the lower hydraulic cylinder through pipelines respectively, and the hydraulic servo system is used for realizing automatic accurate control of the extrusion thickness of the refractory brick molding material in two directions by the upper die plate and the lower die plate through automatic accurate control of the upper hydraulic cylinder and the lower hydraulic cylinder.

2. The bi-directional pressurized refractory brick forming press as recited in claim 1, further comprising: the sliding plate comprises a sliding plate body, the sliding plate body is square, sliding grooves are formed in the left side and the right side of the sliding plate body, and the sliding grooves are sleeved on the sliding rails.

3. The bi-directional pressurized refractory brick forming press as recited in claim 1, further comprising: the forming die 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 face 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 V is fixedly arranged at the position, close to the rear end, of the right side face of the die sleeve, and the hydraulic cylinder VI is fixedly arranged at the position of the front side of the hydraulic cylinder V; the hydraulic cylinder I, the hydraulic cylinder II, the hydraulic cylinder V and the hydraulic cylinder VI are arranged on the left side surface and the right side surface of the die sleeve in a left-right corresponding mode; 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-back manner; guide posts are symmetrically arranged on the left side surface and the right side surface of the die sleeve around the first hydraulic cylinder, the second hydraulic cylinder, the fifth hydraulic cylinder and the sixth hydraulic cylinder up and down; 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 from top to bottom; the limiting bolts are symmetrically arranged at the left side and the right side of the third hydraulic cylinder and the fourth hydraulic cylinder; the die sleeve is of a hollow tetragonal structure and comprises a die sleeve body, the die sleeve body is a tetragonal body with an upper opening and a lower opening, four stepped holes are correspondingly formed in the left side surface and the right side surface of the die sleeve body in the front-back direction, and four bolt holes are fixedly formed in the front side surface and the rear side surface of the die sleeve body and are symmetrically formed in the up-down direction; six guide holes I are symmetrically formed in the left side surface and the right side surface of the die sleeve body from top to bottom, and four guide holes I are symmetrically formed in the front side surface and the rear side surface of the die sleeve body from top to bottom; the first hydraulic cylinder is fixedly arranged in a stepped hole close to the rear end on the left side surface of the die sleeve body, and the second hydraulic cylinder is fixedly arranged in a stepped hole close to the front end on 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 face of the die sleeve body, and the hydraulic cylinder III is arranged in a step hole in the center of the rear side face of the die sleeve body; the hydraulic cylinder V is installed in the stepped hole close to the rear end on the right side surface of the die sleeve body, and the hydraulic cylinder VI is installed in the stepped hole close to the front end on the right side surface of the die sleeve body; the telescopic rods of the hydraulic cylinder I, the hydraulic cylinder II, the hydraulic cylinder III, the hydraulic cylinder V and the hydraulic cylinder VI penetrate through the stepped hole of the die sleeve body and the hydraulic cylinder mounting hole of the long movable plate or the short movable plate to be 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 and the right inner side 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 together; the short movable plates are symmetrically arranged on the front inner side and the rear inner side of the die sleeve, the height of the short movable plates is equal to that of the die sleeve, and the short movable plates are formed by fixedly combining two short movable plates together; the long backing plate is arranged in the middle of the two long moving plates, and the short backing plate is arranged in the middle of the two short moving plates; the long mould is arranged on the inner side of the long moving plate, and the short mould is arranged on the inner side of the short moving plate; the bolt holes II are vertically symmetrically and fixedly arranged at the positions close to the left end and the right end of the short movable plate, the guide holes II are vertically symmetrically arranged at the upper position and the lower position of the long movable plate, and the guide holes II are horizontally symmetrically arranged at the left end and the right end of the short movable plate; the hydraulic cylinder mounting holes are arranged in the middle of the long moving plate in a bilateral symmetry mode, and the hydraulic cylinder mounting holes are arranged on the short moving plate and are arranged in the center of the short moving plate; the fixing hole is arranged at the middle position between the upper part and the lower part of the long moving plate and the short moving plate.

4. The bi-directional pressurized refractory brick forming press as recited in claim 3, further comprising: 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 up and down; 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 up and down; the guide posts are arranged in the guide holes I on the left side, the right side, the front side and the rear side of the die sleeve body and the guide holes II on the long movable plate and the short movable plate; the outer ends of the guide posts extend to the outer side of the die sleeve body, and the inner ends of the guide posts are flush with the inner side faces of the long movable plate and the short movable plate and are fixedly connected with the outer side faces of the long die and the short die.

5. The bi-directional pressurized refractory brick forming press as recited in claim 3, further comprising: the four limiting bolts are close to the left side and the right side of the hydraulic cylinder III and the hydraulic cylinder IV and are symmetrically arranged up and down; and the limiting bolt is arranged in the bolt hole I of the die sleeve body and the bolt hole II of the short movable plate to screw and fixedly connect the die sleeve body and the short movable plate into a whole.

6. The bi-directional pressurized refractory brick forming press as recited in claim 5, wherein: the first bolt holes on the front side and the rear side of the die sleeve body correspond to the second bolt holes of the short movable plate in the front-rear direction; a first guide hole on the left side surface and a second guide hole on the right side surface of the die sleeve body are arranged in a left-right corresponding mode with a second guide hole on the long movable plate; the first guide holes in the front side and the rear side of the die sleeve body and the second guide holes in the short movable plate are arranged in a front-rear corresponding mode.

7. The bi-directional pressurized refractory brick forming press as recited in claim 3, wherein: the long die comprises a long die body, the long die body is cuboid, mounting grooves are formed in the upper inner side and the lower inner side of the long die body, the mounting grooves are in a flat-lying convex shape and longitudinally penetrate through the long die body, and fixing screw holes uniformly and transversely penetrate through the upper mounting grooves and the lower mounting grooves; the short die comprises a short die body, the short die body is cuboid, and connecting screw holes are symmetrically formed in the upper middle part and the lower middle part of the short die body; the long dies symmetrically arranged on the left and right of the die sleeve body are tightly attached to the short dies symmetrically arranged on the front and back of the die sleeve body to form a die cavity for forming refractory bricks.

8. The bi-directional pressurized refractory brick forming press as recited in claim 1, wherein: the forming die support comprises four guide rods, the bottoms of the guide rods are fixedly arranged at the edge positions of the left side and the right side of the bottom in the pressure rack, the upper parts of the guide rods penetrate through a die fixing plate to be installed in a matched mode with the die fixing plate, a stripping plate is arranged at the lower part of the die fixing plate and is square, and the stripping plate is installed on the four guide rods; a square hole is formed in the middle of the mold fixing plate and the middle of the demolding plate, and the upper square hole of the mold fixing plate and the square hole in the demolding plate are arranged in a vertically corresponding mode.

9. The bi-directional pressurized refractory brick forming press as recited in claim 8, wherein: the demoulding oil cylinders are fixedly arranged at the left side and the right side of the demoulding plate, the bottom of the demoulding oil cylinder is fixedly connected with the inner bottom of the pressure frame, and the upper part of the telescopic cylinder of the demoulding oil cylinder penetrates through the left side and the right side of the demoulding plate and is fixedly connected with the demoulding plate; the lower hammer head and the lower die plate penetrate through the centers of the die fixing plate and the stripper plate and extend to the upper part of the die fixing plate.

10. The bi-directional pressurized refractory brick forming press as recited in claim 1, wherein: the hydraulic servo system comprises a motion controller, the motion controller is fixedly connected with a first servo valve or a second servo valve through a lead, and the first servo valve or the second servo valve is fixedly arranged on the input end of a hydraulic oil pipeline of an upper hydraulic cylinder or a lower hydraulic cylinder; and closed-loop control is formed between the upper hydraulic cylinder or the lower hydraulic cylinder and the servo valve I or the servo valve II, and closed-loop control is formed between the servo valve I or the servo valve II and the valve core position and the pipeline flow in the body of the servo valve I or the servo valve II.