CN108501184B - Carbon crucible vibration forming machine - Google Patents
Carbon crucible vibration forming machine Download PDFInfo
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- CN108501184B CN108501184B CN201810528695.9A CN201810528695A CN108501184B CN 108501184 B CN108501184 B CN 108501184B CN 201810528695 A CN201810528695 A CN 201810528695A CN 108501184 B CN108501184 B CN 108501184B
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 62
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 62
- 230000007246 mechanism Effects 0.000 claims abstract description 62
- 238000000465 moulding Methods 0.000 claims abstract description 31
- 238000003825 pressing Methods 0.000 claims abstract description 25
- 238000002156 mixing Methods 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 10
- 230000029058 respiratory gaseous exchange Effects 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 3
- -1 heat Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 238000005461 lubrication Methods 0.000 claims description 3
- 238000013016 damping Methods 0.000 claims description 2
- 238000001125 extrusion Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 description 18
- 230000009471 action Effects 0.000 description 14
- 238000001816 cooling Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 6
- 239000002245 particle Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000010406 cathode material Substances 0.000 description 4
- 238000003754 machining Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 239000000779 smoke Substances 0.000 description 4
- 239000000498 cooling water Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000010426 asphalt Substances 0.000 description 2
- 238000004898 kneading Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000007514 turning Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
- B28B3/20—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein the material is extruded
- B28B3/205—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein the material is extruded using vibrations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/54—Producing shaped prefabricated articles from the material specially adapted for producing articles from molten material, e.g. slag refractory ceramic materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
- B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
- B28B13/0215—Feeding the moulding material in measured quantities from a container or silo
- B28B13/026—Feeding the moulding material in measured quantities from a container or silo by using a movable hopper transferring the moulding material to the moulding cavities
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
- B28B3/20—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein the material is extruded
- B28B3/26—Extrusion dies
- B28B3/2654—Means for heating or cooling the die
Landscapes
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Structural Engineering (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
- Carbon And Carbon Compounds (AREA)
- Ceramic Products (AREA)
Abstract
A carbon crucible vibration molding machine comprises a main frame, an amplitude modulation vibrating table, an upper pressurizing mechanism, a lower pressurizing mechanism, an upper pressing die, an inner die, a middle die and an annular die, wherein the lower part of the upper pressurizing mechanism is provided with the upper pressing die; the lower pressurizing mechanism comprises a lower hydraulic cylinder, a pressurizing supporting seat, an inner mold connecting seat and a plurality of annular mold pressurizing seats, wherein the pressurizing supporting seat is arranged on the vibrating table top; the upper part of the annular die pressurizing seat is provided with an annular die; the pressurizing support seat is provided with a middle die; and the amplitude modulation vibrating table is also provided with a die lifting mechanism. The invention adopts the mode of bottom vibration and up-down extrusion, the crucible mouth faces downwards for molding, the thickness of each part of the crucible is uniform, the molding effect is good, the efficiency is high, no crack exists, and the density is basically consistent up and down.
Description
Technical Field
The invention belongs to the technical field of carbon crucible production, and particularly relates to a carbon crucible vibration forming machine.
Background
At present, two modes of carbon crucible production are adopted: (1) and (3) machining the baked round electrode carbon block blank into a crucible with a required size, wherein the crucible product is round. The production mode has the advantages that the raw materials are roasted, the yield is relatively high, the production efficiency is low, most raw materials (round electrode carbon block blanks) are purchased, the processing technology is complex, the processing waste is large, and the crucible cost is high. (2) And extruding and forming by adopting a large-scale extruder. Specifically, the paste is added into a die, and is extruded downwards by pressure of more than thousand tons (the crucible mouth is shaped upwards), then the blank crucible is obtained through roasting, and then the finished product is obtained through machining and shaping, and the crucible product is round. The production mode has high production efficiency and low production cost, and is suitable for large-scale production; however, the equipment investment is large, the paste flow is poor due to the adoption of forced extrusion molding, the paste particles at each part of the crucible are unevenly distributed, the product quality is poor, and the service period is short.
The carbon crucible is mostly used in the cathode material industry, the cathode material is filled in the crucible, the crucible is orderly placed in a roasting furnace after being covered, the required finished cathode material is obtained after being roasted at high temperature, the carbon crucible used as a roasting container can be repeatedly used, the crucible produced in the first mode can be generally used for 6-7 times, the crucible produced in the second mode can be generally used for about 5 times, the carbon crucible becomes the largest consumable product for producing the cathode material, how to improve the utilization rate of the crucible, and the reduction of the use cost of the crucible becomes a difficult problem in the industry. In recent years, square crucibles are proposed to be used in the industry, and square crucibles are arranged more densely in roasting furnaces with the same size, and the single-charging volume is increased by about 15 to 25 percent, so that the square crucibles are ideal. However, the two production methods, such as the production of the square crucible, are finally machined and molded, the machining process is too complex, the production cost of the square crucible is too high, and the production cost is not remarkably reduced by comprehensive calculation.
Disclosure of Invention
The invention aims to overcome the defects, and provides a carbon crucible vibration forming machine, which adopts a mode of vibrating the bottom to match with up-down extrusion, a crucible opening is downwards formed, the thickness of each part of a crucible is uniform, the forming effect is good, the efficiency is high, no crack exists, the density is basically uniform up and down, a green body can be used only by cleaning the inner surface and the outer surface after roasting, a square crucible can be produced, and the production cost of a crucible manufacturer is reduced.
The invention aims at solving the technical problems by adopting the following technical scheme. The invention provides a carbon crucible vibration forming machine, which comprises a main frame, an amplitude modulation vibration table, an upper pressurizing mechanism and a lower pressurizing mechanism, wherein the upper pressurizing mechanism is arranged at the upper part of the main frame;
the lower pressurizing mechanism comprises a lower hydraulic cylinder, a pressurizing supporting seat, an inner mold connecting seat and a plurality of annular mold pressurizing seats, wherein the pressurizing supporting seat is arranged on the vibrating table top, the lower hydraulic cylinder is arranged at the bottom of the pressurizing supporting seat, one end of the inner mold connecting seat is connected with the lower hydraulic cylinder, the other end of the inner mold connecting seat is connected with the inner mold, the plurality of annular mold pressurizing seats are uniformly distributed at the bottom of the inner mold along the circumferential direction and are connected with steps at the bottom of the inner mold through springs, and a through groove matched with the shape of the annular mold pressurizing seat is formed in the top of the pressurizing supporting seat;
the upper part of the annular mold pressurizing seat is provided with an annular mold, the annular mold is sleeved outside the inner mold, the top of the pressurizing support seat is also provided with an annular groove matched with the annular mold in shape, and the annular mold pressurizing seat abuts against the bottom of the annular mold after penetrating through the through groove;
the middle die comprises a middle die body and guide seats, the guide seats are fixedly arranged on two sides of the middle die body, guide columns are arranged between the main frame and the vibrating table top, and the guide seats are connected with the guide columns in a sliding manner;
and the amplitude modulation vibrating table is also provided with a die lifting mechanism, the die lifting mechanism comprises a die lifting hydraulic cylinder, one end of the die lifting hydraulic cylinder is fixedly connected with the guide seat, and the other end of the die lifting hydraulic cylinder is arranged on the vibrating table top.
The aim of the invention and the solution of the technical problems are further achieved by adopting the following technical measures.
The carbon crucible vibration molding machine is characterized in that a first heating cavity is arranged in the middle mold.
The carbon crucible vibration molding machine is characterized in that a second heating cavity is formed in the inner mold.
In the carbon crucible vibration molding machine, the top of the inner mold is provided with the breathing door.
In the carbon crucible vibration forming machine, the auxiliary supporting frame is arranged around the main frame, the auxiliary supporting frame is arranged on the amplitude modulation vibration table, and the shock absorption rubber block is arranged at the contact part of the auxiliary supporting frame and the periphery of the main frame.
In the carbon crucible vibration forming machine, one side of the main frame is provided with the auxiliary frame, and the auxiliary frame is provided with the uniform temperature mixing drum and the feeding mechanism from top to bottom in sequence.
The carbon crucible vibration molding machine further comprises a pushing block mechanism.
The carbon crucible vibration molding machine further comprises an auxiliary functional module positioned on one side of the main frame and used for providing electricity, liquid, heat, gas and lubrication required by the carbon crucible vibration molding machine.
The carbon crucible vibration molding machine comprises the upper pressurizing mechanism, wherein the upper pressurizing mechanism comprises an upper hydraulic cylinder, the upper hydraulic cylinder is installed on the main frame through a hydraulic cylinder support, the end part of the upper hydraulic cylinder is connected with an upper pressing die connecting seat, and the upper pressing die connecting seat is fixedly connected with an upper pressing die.
The outer surface of the inner mold connecting seat is a cylindrical surface and is matched with the inner surface of the pressurizing supporting seat, so that the inner mold connecting seat and the pressurizing supporting seat are in sliding connection.
By means of the technical scheme, compared with the prior art, the invention has at least the following beneficial effects:
1. the forming mode of the invention is that the bottom vibration is added with the vertical extrusion, which is different from the extrusion forming of the upper part of the extruder, and the paste particles are distributed uniformly under the action of high-frequency small-amplitude vibration force from the feeding stage, thereby avoiding the phenomena of large particles of crucible bottom aggregate, large fine materials on the upper part and uneven strength on the upper part and the lower part of the crucible produced by the extruder, and the extrusion is carried out at the same time, and the forming efficiency is greatly increased under the auxiliary vibration force of the vibrating table.
2. The carbon crucible mouth is formed downwards, and because the demoulding needs a certain draft angle, the mouth is formed downwards, the wall thickness of the crucible can be uniform and consistent, the problems of thin upper mouth wall and thick lower wall thickness of a crucible blank in extrusion forming are avoided, the carbon crucible can be uniformly thick and the heat conduction is uniform when the carbon crucible is used without secondary processing in the later stage.
3. Unlike available extruder with upper and lower dies, the molding die consists of upper pressing die, middle die, annular die and inner die, and the carbon crucible has homogeneous density and may be produced with different pressures applied separately to the bottom, upper opening circumference and inner cavity of the carbon crucible product.
4. The finished product rate of the cooling link after the product is formed is higher. Because the carbon crucible product is of a thin-wall structure, after the product is molded, the crucible mouth is pushed out downwards to a downstream spray cooling device, and the crucible can be rapidly cooled under the spray of cooling water of the upper nozzle and the lower nozzle. The crucible mouth formed by the existing extruder faces upwards, and the product just formed is softer and is not suitable for turning, so that the upper part is only used for spraying and cooling, cooling water falls into the inner cavity of the crucible, the crucible is easy to break under the action of the gravity of the water, the cooling water is required to be sucked out in time, and the yield is relatively low.
5. The invention mainly solves the problem of high production cost of the square crucible, the square crucible and the round crucible are produced by adopting the same method, only different dies are needed to be replaced, the wall thickness of the produced product is uniform, and the later processing is not needed, thereby solving the industrial problem.
6. The invention has the functions of stirring, metering, conveying, forming, pushing out and the like of the paste, adopts the full-automatic control of a PLC, and has high production efficiency.
The foregoing description is only an overview of the present invention, and is intended to be implemented in accordance with the teachings of the present invention, as well as the preferred embodiments thereof, together with the following detailed description of the invention given in conjunction with the accompanying drawings.
Drawings
Fig. 1 is a schematic cross-sectional elevation view of the present invention.
Fig. 2 is a schematic side sectional structure of the present invention.
Fig. 3 is a schematic view of the structure of the lower pressurizing mechanism and each mold in the present invention.
FIG. 4 is a schematic view of the internal mold according to the present invention.
Fig. 5 is a schematic structural view of a pressing support base in the present invention.
FIG. 6 is a schematic view showing the positional relationship among the annular mold pressing base, the pressing support base and the inner mold according to the present invention.
Fig. 7A to 7E are schematic views of a process flow of the present invention in producing a carbon crucible.
Detailed Description
In order to further describe the technical means and effects adopted by the invention to achieve the preset aim, the following detailed description refers to the specific implementation, structure, characteristics and effects of a carbon crucible vibration molding machine according to the invention with reference to the accompanying drawings and the preferred embodiments.
Referring to fig. 1 to 6, the vibration forming machine for carbon crucible of the present invention comprises a main frame 1, an amplitude modulation vibration table 2, an upper pressurizing mechanism 3, and a lower pressurizing mechanism 4, wherein the amplitude modulation vibration table 2 is fixedly installed on a device foundation 17.
The upper pressurizing mechanism 3 is arranged at the upper part of the main frame 1, an upper pressing die 5 is arranged at the lower part of the upper pressurizing mechanism 3, the lower part of the main frame 1 is connected with a vibrating table surface 21 of the amplitude modulation vibrating table 2, and the lower pressurizing mechanism 4 is arranged on the vibrating table surface 21. The upper pressurizing mechanism 3 is composed of an upper hydraulic cylinder 31 mounted on the main frame 1 via a cylinder mount, and the end of the upper hydraulic cylinder 31 is connected to an upper die connecting seat 32, and the upper die connecting seat 32 is connected to the upper die 5 via a fastener. The upper pressurizing mechanism 3 is mainly used for applying pressure to the bottom of the carbon crucible, the upper hydraulic cylinder 31 adopts a special high-pressure cylinder, and the pressurizing force can be adjusted according to different specifications of molded products, so that the products are different in specifications and consistent in molding density. The upper pressing die 5 is made of wear-resistant steel and is used for forming the bottom of the crucible under the action of an upper pressing mechanism.
The lower pressurizing mechanism 4 includes a lower hydraulic cylinder 41, a pressurizing support base 42, an inner mold connecting base 43, and a plurality of annular mold pressurizing bases 44. The pressing support base 42 is mounted on the vibration table 21, as shown in fig. 5, the pressing support base 42 is cylindrical, and a flange 423 is provided at the middle part thereof, and the flange can fix the pressing support base 42 and the vibration table 21 by fastening means such as bolts. The lower hydraulic cylinder 41 is mounted at the bottom of the pressurizing support base 42. One end of the inner mold connecting seat 43 is connected with the lower hydraulic cylinder 41, and the other end is connected with the inner mold 6. The plurality of annular die pressurizing seats 44 are uniformly distributed at the bottom of the inner die 6 along the circumferential direction and are connected with the step 61 at the bottom of the inner die 6 through the springs 7, and through grooves 421 matched with the shape of the annular die pressurizing seats 44 are formed in the top of the pressurizing support seat 42. As shown in fig. 6, 8 annular mold pressurizing seats 44 are provided, correspondingly, 8 through slots 421 are provided at the top of the pressurizing support seat 42, and the cross section of each through slot 421 is larger than the cross section of each annular mold pressurizing seat 44, so that the annular mold pressurizing seat 44 can pass through the through slot 421, and the cross section of the annular mold pressurizing seat 44 is fan-shaped. The inner mold 6 is mainly used for molding the inner cavity of the carbon crucible and realizing precise demolding.
The upper part of the annular mold pressurizing seat 44 is provided with an annular mold 7, the annular mold 7 is sleeved outside the inner mold 6, the top of the pressurizing support seat 42 is also provided with an annular groove 422 matched with the annular mold 7 in shape, and the annular mold pressurizing seat 44 passes through the through groove 421 and then abuts against the bottom of the annular mold 7. The annular die 7 is made of wear-resistant steel, is arranged outside the inner die, and applies pressure to the edge of the crucible under the action of the lower pressurizing mechanism during molding to accelerate the molding of the crucible.
The middle die 8 is arranged on the pressurizing support base 42, the middle die 8 comprises a middle die body 81 and guide bases 82, the guide bases 82 are fixedly arranged on two sides of the middle die body 81, guide columns 9 are arranged between the main frame 1 and the vibrating table top 21, and the guide bases 82 are in sliding connection with the guide columns 9. The middle mold 8 is mainly used for molding the appearance of the carbon crucible, and the guide seat and the guide post are matched to realize accurate demolding.
The amplitude modulation vibrating table 2 is also provided with a die lifting mechanism, the die lifting mechanism comprises a die lifting hydraulic cylinder 10, one end of the die lifting hydraulic cylinder 10 is fixedly connected with a guide seat 82, and the other end of the die lifting hydraulic cylinder is arranged on the vibrating table top 21. The mould lifting mechanism is mainly used for demoulding and lifting the middle mould 8 after forming and downwards locking the middle mould 8 during forming.
Preferably, the middle mold 81 is provided with a first heating cavity 811, and a heating medium can be introduced into the first heating cavity to heat and preserve heat around the crucible, so that the appearance of the crucible product is improved, and the demolding difficulty can be reduced; likewise, the second heating cavity 62 is arranged in the inner die 6, so that the periphery of the inner cavity of the crucible can be heated and insulated, the quality of crucible products can be improved, and the demolding difficulty can be reduced.
Preferably, a breathing gate 63 is arranged at the top of the inner mold 6. Specifically, when the pressurization molding is carried out, the breather door is closed, and when the mold is released, compressed air is introduced into the breather door, the inner cavity of the carbon crucible is communicated with the atmosphere, and the inner cavity of the carbon crucible can be prevented from generating vacuum when the mold is released, so that the bottom of the crucible is prevented from being torn.
Preferably, an auxiliary supporting frame 11 is arranged around the main frame 1, the auxiliary supporting frame 11 is mounted on the amplitude modulation vibration table 2, and a damping rubber block 111 is mounted at the contact part of the auxiliary supporting frame 11 and the periphery of the main frame 1. The auxiliary supporting frame 11 is mainly used for supporting and guiding and absorbing redundant vibration when the main frame part vibrates.
Further, an auxiliary frame 12 is arranged on one side of the main frame 1, and a temperature equalization mixing drum 13 and a feeding mechanism 14 are sequentially arranged on the auxiliary frame 12 from top to bottom. The auxiliary frame 12 is arranged on an equipment foundation 17 and mainly provides a supporting platform for a temperature-equalizing mixing drum, a feeding mechanism and the like. The temperature-homogenizing mixing drum adopts an authorized patent product of the applicant, the patent number is ZL200720090624.2, and the temperature-homogenizing mixing drum has the main functions of uniformly kneading paste from upstream conveying equipment, cooling, preserving heat and removing asphalt smoke. The feeding mechanism is arranged below the uniform temperature mixing barrel, the accurate measurement of the paste is mainly completed, the paste is conveyed to the upper part of the middle die from the measuring station, and the discharging is completed. In addition, the amplitude modulation vibration table 2 is also a patent product which is already authorized by the applicant, and has the patent number ZL200720090620.4, which mainly provides vibration force for a main frame part, paste is discharged into a die, the paste can be uniformly distributed through high-frequency small-amplitude vibration, and excessive smoke among the paste can be discharged, and when an upper pressurizing mechanism and a lower pressurizing mechanism are used for extrusion molding, the main frame is accelerated to be molded under the action of the vibration force. The specific structure and working principle of the vibrating table are not described in detail herein; of course, amplitude modulation vibration tables of other common structures can be adopted, and the structure of the amplitude modulation vibration table is not limited by the invention.
Further, the present invention includes a pushing block mechanism 15 for pushing the formed carbon crucible product from the main frame 1 to a cooling station (downstream equipment). The pushing block mechanism 15 is fixed on the equipment foundation 17 and is positioned below the feeding mechanism.
Further, an auxiliary function module 16 is provided on one side of the main frame 1, and the auxiliary function module 16 is also mounted on an equipment foundation 17 for providing electricity, liquid, heat, gas and lubrication required by the carbon crucible vibration forming machine. Specifically, the bottom end of the breathing gate 63 is connected to the auxiliary function module 16 through an air pipe, and the second heating chamber 62 is connected to the auxiliary function module 16 through an oil pipe.
Preferably, the outer surface of the inner mold connecting seat 43 is a cylindrical surface and is matched with the inner surface of the pressurizing supporting seat 42, so that the inner mold connecting seat and the pressurizing supporting seat are in sliding connection, and the guiding function of the inner mold moving is achieved.
Referring to fig. 7A to 7E, the specific process flow of the present invention during production is as follows:
the metering value of the feeding mechanism 14 is weighed and adjusted to the weight of the required paste before operation. The paste from the kneading process is conveyed into a temperature equalization mixing drum 13, the paste is cooled and exhausted in the temperature equalization mixing drum 13, and when the temperature reaches a proper temperature, a bottom material door of the temperature equalization mixing drum 10 is opened, and the paste is rapidly discharged into a feed mechanism 14 bin at the lower part. When the required amount is discharged, the material gate is automatically closed, and the paste metering is completed. The feeding mechanism 14 is driven to advance through a speed reducer after receiving the material, and when the feeding mechanism 14 advances to the position right above the middle die 8, the feeding mechanism 14 stops advancing. The amplitude modulation vibration table 2 works with small amplitude, the lower pressurizing mechanism 4 drives the annular die 7 to descend to the initial descending position, the annular die 7 falls into the annular groove 422 of the pressurizing support seat 42 (as shown in fig. 7E), and then the paste in the storage bin is completely fed into the middle die 8, and then the storage bin is returned to reset and waits for receiving the discharge of the uniform temperature mixing drum again. The paste flows evenly under the action of high-frequency small-amplitude vibration force and is spread in the middle die 8, and meanwhile, a large amount of asphalt smoke can be discharged, so that the product molding is facilitated. At this time, as shown in FIG. 7A, the paste was in a loose state after the addition was completed.
Next, the upper pressurizing mechanism 3 and the upper pressing die 5 move downward, after the upper pressurizing mechanism contacts the paste, the lower pressurizing mechanism 4 and the annular die pressurizing seat 44 start to move upward, the annular die pressurizing seat 44 is connected with the step 61 of the inner die 6 through a plurality of springs 441, after a certain distance upward, the annular die pressurizing seat 44 contacts the annular die 7, the springs at the bottom of the annular die pressurizing seat 44 are subjected to extrusion deformation to generate reaction force, the annular die 7 is under the action of the springs, the upper edge of the carbon crucible product is pressurized by the force released by the deformation of the springs, the inner die 6 is directly under the action of the lower hydraulic cylinder 41 of the lower frame mechanism 4 to pressurize the bottom and the inner wall of the carbon crucible product, meanwhile, the amplitude modulation vibrating table 2 starts to work with large amplitude, after the springs 441 between the annular die pressurizing seat 44 and the inner die 6 are deformed to a certain stage, the annular die pressurizing seat is directly contacted with the inner die, the pressure applied by the lower hydraulic cylinder is directly transferred to the annular die 7, and the annular die 7 and the inner die 6 are both pressurized together under the action of the pressurization force. Specifically, as shown in fig. 7B, the upper die 5 and the inner die 6 extrude the paste; and FIG. 7C shows the upper die 5, the inner die 6, and the annular die 7 pressing the paste at the same time until molding.
The upper and lower hydraulic cylinders continuously supply oil to apply pressure to the surface of the paste, and the vibration molding of the carbon crucible is accelerated under the action of vibration force. Referring to fig. 7D, after the carbon crucible a is formed, the upper pressing mold 5 is lifted up by about 10mm, and then the inner mold 6 and the annular mold pressing seat 44 move downward along with the lower hydraulic cylinder 41 to perform the mold stripping action, at this time, compressed air is introduced into the breathing gate 63 on the inner mold 6, and the inner cavity of the carbon crucible a is connected to the atmosphere, so that the crucible bottom is prevented from being torn due to vacuum generated in the inner cavity of the crucible during mold stripping. The annular mold 7 is adhered to the edge of the carbon crucible A while the inner mold 6 moves downwards, after the inner mold removing action is completed, the middle mold 8 is lifted upwards under the upward jacking action of the mold lifting hydraulic cylinder 10 of the mold lifting mechanism, a carbon crucible product and the annular mold 7 fall down, the annular mold 7 falls into the annular groove 422 above the pressurizing support seat 42, after the middle mold 8 is lifted upwards by about 100mm, the upper pressing mold 5 also starts to move upwards until returning to the upper initial position, and the state diagram of the process is shown in fig. 7E. After the middle die 8 reaches the upper limit of the lifting die, the pushing block mechanism 15 is driven to advance through a hydraulic cylinder, the pushing block mechanism 15 separates the carbon crucible A from the annular die 7 after contacting with the carbon crucible product, the carbon crucible A is pushed to downstream equipment, and the pushing block mechanism 15 is retracted and reset. The middle die 8 is lowered and reset, and the single process is finished.
Because the carbon crucible is of a thin-wall structure, how to ensure uniform distribution of particles in the product, smooth demolding and uniform and rapid cooling are important problems to be solved in production. The structure of the invention carries out key optimization design in the three aspects: firstly, by using the amplitude modulation vibration table 2, the paste can flow uniformly under the action of vibration force, and meanwhile, the smoke is discharged, so that the problems of uniform particle distribution and uniform density of products are solved. And secondly, heat conduction oil is filled in heating cavities arranged in the middle die 8 and the inner die 6, so that the paste is not easy to adhere to the die. Meanwhile, the surfaces of all parts of the die are polished, so that the smoothness is improved, and the friction force between the product and the die is reduced; the inner mold 6 is provided with a breathing door 63, and the bottom of the inner cavity of the carbon crucible is directly communicated with the atmosphere during demolding, so that the inner cavity of the product is prevented from generating vacuum during demolding to tear the product. Most importantly, the die is divided into four parts, and the die is an important innovation for ensuring smooth demolding through parting in multiple times. In addition, the scheme of downward molding is adopted, the molded product enters a cooling station after being pushed out, and the downward cooling mode of the port can be more suitable for the production of carbon crucible products, so that the product yield is improved without turning over the product, the wall thickness of the produced product is uniform, the shrinkage rate is uniform during cooling, and shrinkage cracks caused by uneven thickness are avoided.
Preferably, the invention can produce square crucible with uniform wall thickness, and the later machining is not needed, thus greatly reducing the production cost.
The above description is only of the preferred embodiments of the present invention, and any simple modification, equivalent variation and modification of the above embodiments according to the technical principles of the present invention will still fall within the scope of the technical solutions of the present invention.
Claims (10)
1. The utility model provides a carbon crucible vibration forming machine, includes main frame (1), amplitude modulation shaking table (2), upper portion pressurizing mechanism (3), lower part pressurizing mechanism (4), its characterized in that: the upper pressurizing mechanism (3) is arranged at the upper part of the main frame (1), an upper pressing die (5) is arranged at the lower part of the upper pressurizing mechanism (3), the lower part of the main frame (1) is connected with a vibrating table board (21) of the amplitude modulation vibrating table (2), and the lower pressurizing mechanism (4) is arranged on the vibrating table board (21);
the lower pressurizing mechanism (4) comprises a lower hydraulic cylinder (41), a pressurizing support seat (42), an inner mold connecting seat (43) and a plurality of annular mold pressurizing seats (44), wherein the pressurizing support seat (42) is arranged on the vibrating table top (21), the lower hydraulic cylinder (41) is arranged at the bottom of the pressurizing support seat (42), one end of the inner mold connecting seat (43) is connected with the lower hydraulic cylinder (41), the other end of the inner mold connecting seat is connected with the inner mold (6), the plurality of annular mold pressurizing seats (44) are uniformly distributed at the bottom of the inner mold (6) along the circumferential direction and are connected with a step (61) at the bottom of the inner mold (6) through springs (7), and through grooves (421) matched with the shape of the annular mold pressurizing seats (44) are formed in the top of the pressurizing support seat (42);
the upper part of the annular mold pressurizing seat (44) is provided with an annular mold (7), the annular mold (7) is sleeved outside the inner mold (6), the top of the pressurizing support seat (42) is also provided with an annular groove (422) matched with the annular mold (7) in shape, and the annular mold pressurizing seat (44) passes through the through groove (421) and then abuts against the bottom of the annular mold (7);
the middle die (8) is arranged on the pressurizing supporting seat (42), the middle die (8) comprises a middle die body (81) and guide seats (82), the guide seats (82) are fixedly arranged on two sides of the middle die body (81), guide columns (9) are arranged between the main frame (1) and the vibrating table top (21), and the guide seats (82) are in sliding connection with the guide columns (9);
the amplitude modulation vibrating table (2) is also provided with a die lifting mechanism, the die lifting mechanism comprises a die lifting hydraulic cylinder (10), one end of the die lifting hydraulic cylinder (10) is fixedly connected with the guide seat (82), and the other end of the die lifting hydraulic cylinder is arranged on the vibrating table top (21).
2. A carbon crucible vibration molding machine as defined in claim 1, wherein: a first heating cavity (811) is arranged in the middle die (81).
3. A carbon crucible vibration molding machine as defined in claim 1, wherein: a second heating cavity (62) is arranged in the inner die (6).
4. A carbon crucible vibration molding machine according to claim 1 or 3, wherein: the top of the inner mold (6) is provided with a breathing door (63).
5. A carbon crucible vibration molding machine as defined in claim 1, wherein: an auxiliary supporting frame (11) is arranged around the main frame (1), the auxiliary supporting frame (11) is arranged on the amplitude modulation vibrating table (2), and a damping rubber block (111) is arranged at the contact part of the auxiliary supporting frame (11) and the periphery of the main frame (1).
6. A carbon crucible vibration molding machine as defined in claim 1, wherein: an auxiliary frame (12) is arranged on one side of the main frame (1), and a temperature-equalizing mixing drum (13) and a feeding mechanism (14) are sequentially arranged on the auxiliary frame (12) from top to bottom.
7. A carbon crucible vibration molding machine as defined in claim 1, wherein: it also comprises a push block mechanism (15).
8. A carbon crucible vibration molding machine as defined in claim 1, wherein: it also comprises an auxiliary functional module (16) positioned on one side of the main frame (1) and used for providing electricity, liquid, heat, gas and lubrication required by the carbon crucible vibration forming machine.
9. A carbon crucible vibration molding machine as defined in claim 1, wherein: the upper pressurizing mechanism (3) comprises an upper hydraulic cylinder (31), the upper hydraulic cylinder (31) is arranged on the main frame (1) through a hydraulic cylinder support, the end part of the upper hydraulic cylinder (31) is connected with an upper pressing die connecting seat (32), and the upper pressing die connecting seat (32) is fixedly connected with the upper pressing die (5).
10. A carbon crucible vibration molding machine as defined in claim 1, wherein: the outer surface of the inner mold connecting seat (43) is a cylindrical surface and is matched with the inner surface of the pressurizing supporting seat (42), so that sliding connection of the inner mold connecting seat and the pressurizing supporting seat is realized.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810528695.9A CN108501184B (en) | 2018-05-28 | 2018-05-28 | Carbon crucible vibration forming machine |
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|---|---|---|---|
| CN201810528695.9A CN108501184B (en) | 2018-05-28 | 2018-05-28 | Carbon crucible vibration forming machine |
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| CN108501184B true CN108501184B (en) | 2024-01-23 |
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| CN113733307B (en) * | 2021-08-16 | 2022-09-02 | 三峡大学 | Novel efficient forming device and method for honeycomb briquette furnace pipe blank |
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