CN116786809A - Sand mo (u) ld casting automation line of paddle - Google Patents

Sand mo (u) ld casting automation line of paddle Download PDF

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Publication number
CN116786809A
CN116786809A CN202311049952.8A CN202311049952A CN116786809A CN 116786809 A CN116786809 A CN 116786809A CN 202311049952 A CN202311049952 A CN 202311049952A CN 116786809 A CN116786809 A CN 116786809A
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China
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pressing
preset
casting
paddles
condition
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吴伟锋
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Zhangjiagang Renda Metal Products Co ltd
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Zhangjiagang Renda Metal Products Co ltd
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Priority to CN202311049952.8A priority Critical patent/CN116786809A/en
Publication of CN116786809A publication Critical patent/CN116786809A/en
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Abstract

The invention relates to the technical field of blade casting, in particular to a sand mould casting automatic production line of a blade, which comprises the following steps: the sand feeding module is used for conveying sand materials into the casting box group in which the mould is placed; the pressing module is used for outputting a blade sand mould by pressing sand materials in the casting box group and comprises a second conveying belt, a vibration assembly and a pressing assembly; the casting molding module is used for casting the blade sand mold to output a molded blade and comprises a first mechanical arm, a third conveying belt and a casting pipeline; the polishing module comprises a polishing assembly, a weight sensor and a visual sensor; the central control module is used for adjusting the pressing pressure of the pressing assembly to a first corresponding pressure according to the variance of the weights of the finished paddles of the plurality of finished paddles, or adjusting the vibration frequency of the vibration assembly to a first corresponding frequency according to the average diameter of the finished paddles of the plurality of finished paddles; the invention realizes the improvement of the production efficiency and the production accuracy of the blade.

Description

Sand mo (u) ld casting automation line of paddle
Technical Field
The invention relates to the technical field of blade casting, in particular to a sand mould casting automatic production line of a blade.
Background
The sand mould casting is a casting form with wide application, and has the characteristics of good air permeability, high strength, high temperature resistance, easy recovery and the like; the sand casting process is the core of casting production, but the feeding rate of molten steel is poor due to the non-uniformity of the flow rate of the molten steel in the casting process of the traditional process, so that the temperature difference is easily generated in each part of the casting, and casting defects such as shrinkage porosity, shrinkage cavity and the like are easily generated in the casting when the molten steel is solidified.
Chinese patent publication No.: CN21514446U discloses an automatic riser digging device for sand casting, which comprises a framework, wherein a transverse translation mechanism is arranged on the framework, a vertical lifting mechanism is arranged on the transverse translation mechanism, the lower end of the vertical lifting mechanism is fixedly connected with a turnover mechanism, the front end of the turnover mechanism is provided with a clamping jaw for clamping a sand mould frame, and the opposite positions of the two sides of the clamping jaw are respectively provided with a turnover pressing cylinder or cylinder; an upper die lifting mechanism is further vertically arranged on the framework, an upper die mounting plate is fixedly arranged at the lower end of the upper die lifting mechanism, an upper die for sand mould riser digging is arranged at the bottom of the upper die mounting plate, a lower die mounting plate is further arranged right below the upper die, and a lower die is arranged on the lower die mounting plate; from this, it can be seen that the sand casting automation dead head digging device has the following problems: the problem of insufficient production stability of the blade due to inaccurate adjustment of the pressing pressure of the pressing assembly and inaccurate adjustment of the vibration frequency.
Disclosure of Invention
Therefore, the invention provides a sand mold casting automatic production line of paddles, which is used for solving the problem of insufficient production stability of paddles caused by inaccurate adjustment of pressing pressure of a pressing assembly and inaccurate adjustment of vibration frequency in the prior art.
In order to achieve the above object, the present invention provides a sand mold casting automation line for a blade, comprising: the pressing module is used for outputting a blade sand mould by pressing sand in the casting box group and comprises a vibration component and a pressing component, wherein the vibration component is partially arranged below the casting box group and used for driving the casting box group to vibrate in the horizontal direction, and the pressing component is arranged above the casting box group and used for performing pressing operation on the sand in the casting box group; the casting forming module is connected with the pressing module and used for casting the blade sand mould to output formed blades, and comprises a first mechanical arm and a casting pipeline, wherein the first mechanical arm is arranged above the casting box group and used for carrying out mould withdrawing operation, mould assembling operation and mould disassembling operation on the casting box group respectively, and the casting pipeline is arranged above the first mechanical arm and used for casting molten metal into the casting box group after the mould assembling operation is completed; the polishing module is connected with the casting molding module and comprises a first conveying belt, a polishing assembly, a weight sensor and a visual sensor, wherein the first conveying belt is arranged at the output end of the casting molding module and used for conveying the molded blade, the polishing assembly is connected with the first conveying belt and used for polishing the molded blade to output a finished blade, the weight sensor is arranged below the first conveying belt and used for detecting the weight of the finished blade, and the visual sensor is arranged on the first conveying belt Fang Yongyi and used for detecting the diameter of the finished blade and the surface crack area of the finished blade respectively; the central control module is respectively connected with the pressing module, the casting molding module and the polishing module and is used for carrying out primary adjustment on the pressing pressure of the pressing assembly when the stability of the production quality of the blades is judged to be lower than an allowable range according to the variance of the weights of a plurality of finished blades, or carrying out primary adjustment on the vibration frequency of the vibration assembly according to the average diameters of a plurality of finished blades; secondly adjusting the pressing pressure of the pressing assembly according to the average specific surface area of the cracks on a plurality of finished paddles under the first condition; and, secondarily adjusting the vibration frequency of the vibration assembly according to the length of time used for the pressing operation under the second condition; the first condition is that the central control module completes primary adjustment of the pressing pressure of the pressing assembly; the second condition is that the central control module completes primary adjustment of the vibration frequency of the vibration assembly.
Further, the pressing assembly includes:
the pressing hammer is arranged above the casting box group and is used for pressing sand materials in the casting box group;
and the first telescopic rod is connected with the pressing hammer and is used for adjusting the vertical position of the pressing hammer.
Further, the central control module judges whether the stability of the production quality of the blade is within an allowable range according to the variance of the weights of a plurality of finished blades, wherein,
the central control module judges that the stability of the production quality of the blade is lower than an allowable range under the first variance condition and the second variance condition, wherein,
the central control module judges that the pressing pressure of the pressing assembly needs to be increased under the first differential condition;
the central control module preliminarily judges that the compactness of the blade sand mould is lower than an allowable range under the second variance condition, and secondarily judges the compactness of the blade sand mould according to the average diameters of a plurality of finished blades;
the first variance condition is that variances of the weights of a plurality of finished product paddles are larger than a preset first variance and smaller than or equal to a preset second variance; the second variance condition is that variances of the weights of a plurality of finished product paddles are larger than a preset second variance; the preset first variance is smaller than the preset second variance.
Further, the central control module is provided with a plurality of adjusting modes for increasing the pressing pressure of the pressing assembly according to the difference value between the variance of the weights of a plurality of finished blades and the preset first variance under the condition of the first variance,
wherein, each pressure adjustment mode is different in adjustment magnitude to the pressing pressure of increase pressing assembly.
Further, the central control module carries out secondary judgment on the compactness degree of the sand mould of the blades according to the average diameters of a plurality of finished blades under the condition of a second variance, wherein,
the central control module judges that the compactness of the blade sand mould is lower than the allowable range under the condition of the preset diameter, adjusts the vibration frequency of the vibration assembly,
the preset diameter condition is that the average diameter of a plurality of finished product paddles is larger than the preset diameter.
Further, the central control module is provided with a plurality of adjusting modes for reducing the vibration frequency of the vibration assembly according to the difference value between the average diameter of a plurality of finished product paddles and the preset diameter under the preset diameter condition,
wherein, each vibration frequency adjusting mode is different in adjusting magnitude for reducing the vibration frequency of the vibration component.
Further, the central control module judges the air permeability of the blade sand mould according to the average specific surface area of the cracks on a plurality of finished blades under the first condition, wherein,
the central control module judges that the air permeability of the blade sand mould is lower than the allowable range under the condition of the preset specific surface area, and secondarily adjusts the pressing pressure of the pressing assembly,
the preset specific surface area condition is that the average specific surface area of the cracks on a plurality of finished product paddles is larger than the preset specific surface area of the cracks.
Further, the central control module is provided with a plurality of secondary adjustment modes for reducing the pressing pressure of the pressing assembly according to the difference value between the average specific surface area of the cracks on the plurality of finished product blades and the preset specific surface area of the cracks under the condition of the preset specific surface area,
wherein, each secondary adjustment mode is different in adjustment magnitude of the pressing pressure for reducing the pressing assembly.
Further, the central control module judges whether the production efficiency of the blade is within an allowable range according to the time length used by a single pressing process under the second condition, wherein,
the central control module judges that the production efficiency is lower than the allowable range under the condition of the preset duration, and secondarily adjusts the vibration frequency of the vibration assembly;
the preset duration condition is that the time length used in a single pressing process is longer than the preset pressing duration.
Further, the central control module is provided with a plurality of secondary adjustment modes for increasing the vibration frequency of the vibration assembly according to the difference value between the time length used in the single pressing process and the preset pressing time length under the condition of the preset time length,
wherein, each secondary adjustment mode is different in the adjustment of the vibration frequency of the vibration component.
Compared with the prior art, the automatic production line has the beneficial effects that the sand mold casting process of the blade is automatically produced and detected by arranging the sand feeding module, the pressing module, the casting forming module, the polishing module and the central control module, the central control module calculates the variance of the weight of a plurality of finished blades according to the weight of the plurality of finished blades weighed by the weighing assembly and judges the stability of the production quality of the blade, the sand collapse is reduced by increasing the compaction pressure of the pressing assembly, or the stability of the production quality of the blade is improved by reducing the water evaporation by decreasing the vibration frequency of the vibration assembly, the secondary adjustment of the pressing pressure of the pressing assembly is carried out according to the average specific surface area of cracks on the plurality of finished blades when the primary adjustment of the pressing pressure of the pressing assembly is completed, the ventilation property of the blade sand mold is improved on the premise of avoiding collapse, and the secondary adjustment of the vibration frequency of the vibration assembly is carried out according to the vibration frequency of the pressing operation after the primary adjustment of the vibration frequency of the vibration assembly, so that the production efficiency and the accuracy of the production are improved.
According to the automatic production line, the central control module is used for judging whether the stability of the production quality of the blades is within an allowable range according to the preset first variance and the preset second variance of the weight of a plurality of finished blades, the sand molds are unbalanced due to the fact that the pressing pressure is too low or sand materials are injected in a certain period in the preparation process, the loss weight of rough blades after polishing is further increased, the pressing pressure of the pressing assembly is adjusted by the central control module under the first variance condition through setting the preset first variance difference condition, the preset second variance difference condition, the preset first pressure adjusting coefficient and the preset second pressure adjusting coefficient, the loss of molten metal liquid is reduced and the quality of the finished blades is increased by increasing the pressing pressure of the pressing assembly, and the production efficiency and the production accuracy of the blades are further improved.
According to the automatic production line, the preset diameter condition is set, the central control module carries out secondary judgment on the compactness of the sand mould of the blades according to the average diameter of a plurality of finished blades, the vibration frequency of the vibration assembly is too high, so that the friction rate of sand materials is accelerated, the evaporation rate of water in the sand materials is accelerated due to generated heat, the acting force between the sand materials can be reduced due to the evaporation of the water, the sand mould generates additional hole structures in the mould closing process, the diameter of the blades is expanded, the preset first diameter condition, the preset second diameter condition, the preset first frequency adjustment coefficient and the preset second frequency adjustment coefficient are set, the central control module adjusts the vibration frequency of the vibration assembly, and the production efficiency and the production accuracy of the blades are further improved through reducing the evaporation of the water due to the reduction of the vibration frequency.
According to the automatic production line, the preset specific surface area condition is set, the central control module judges the air permeability of the sand mould of the blade according to the average specific surface area of cracks on a plurality of finished blades, the air permeability of the sand mould is reduced due to the fact that the air holes among sand materials are reduced after the pressing pressure of the pressing assembly is increased, so that the safety of the blade is reduced due to the fact that air holes and cracks appear in the casting process, and the production efficiency and the production accuracy of the blade are further improved by setting the preset first specific surface area difference condition, the preset second specific surface area difference condition, the preset third pressure regulating coefficient and the preset fourth pressure regulating coefficient, the central control module secondarily regulates the pressing pressure of the pressing assembly, and the air permeability of the sand mould of the blade is improved on the premise that sand mould collapse is avoided.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an automated sand mold casting line for paddles according to an embodiment of the invention;
FIG. 2 is a block diagram of the overall structure of an automated sand mold casting line for paddles according to an embodiment of the invention;
FIG. 3 is a schematic view of a vibration assembly of a sand mold casting automation line for a blade according to an embodiment of the present invention;
fig. 4 is a specific block diagram of a pressing module of a sand mold casting automation line of a blade according to an embodiment of the present invention.
Detailed Description
In order that the objects and advantages of the invention will become more apparent, the invention will be further described with reference to the following examples; it should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention.
Fig. 1, fig. 2, fig. 3 and fig. 4 show an overall schematic diagram of a sand mold casting automation line, an overall schematic diagram of a vibration component, and a specific schematic diagram of a pressing module of a blade according to an embodiment of the present invention. The invention relates to a sand mould casting automatic production line of a blade, which comprises the following steps:
the pressing module is used for outputting a blade sand mould by pressing sand in the casting box group and comprises a vibration assembly 15 which is partially arranged below the casting box group and used for driving the casting box group to vibrate horizontally and a pressing assembly which is arranged above the casting box group and used for performing pressing operation on the sand in the casting box group;
the casting forming module is connected with the pressing module and used for casting the blade sand mould to output formed blades, and comprises a first mechanical arm 5 which is arranged above the casting box group and used for carrying out mould withdrawing operation, mould assembling operation and mould disassembling operation on the casting box group respectively and a casting pipeline 7 which is arranged above the first mechanical arm 5 and used for casting molten metal into the casting box group which completes the mould assembling operation;
the polishing module is connected with the casting molding module and comprises a first conveying belt 21, a polishing assembly 10, a weight sensor 9 and a visual sensor 8, wherein the first conveying belt 21 is arranged at the output end of the casting molding module and is used for conveying the molded blade, the polishing assembly 10 is connected with the first conveying belt 21 and is used for polishing the molded blade to output a finished blade, the weight sensor 9 is arranged below the first conveying belt and is used for detecting the weight of the finished blade, and the visual sensor 8 is arranged on the fourth conveying belt Fang Yongyi and is used for detecting the diameter of the finished blade and the surface crack area of the finished blade respectively;
the central control module is respectively connected with the pressing module, the casting molding module and the polishing module and is used for carrying out primary adjustment on the pressing pressure of the pressing assembly when the stability of the production quality of the blades is judged to be lower than an allowable range according to the variance of the weights of a plurality of finished blades, or carrying out primary adjustment on the vibration frequency of the vibration assembly according to the average diameters of a plurality of finished blades;
secondly adjusting the pressing pressure of the pressing assembly according to the average specific surface area of the cracks on a plurality of finished paddles under the first condition;
and, secondarily adjusting the vibration frequency of the vibration assembly according to the length of time used for the pressing operation under the second condition;
the first condition is that the central control module completes primary adjustment of the pressing pressure of the pressing assembly; the second condition is that the central control module completes primary adjustment of the vibration frequency of the vibration assembly.
Specifically, the sand mold casting automation line of paddle still includes into sand module for with sand material carry to the casting incasement group of placing the mould, including setting up the top of casting incasement group is used for carrying the second conveyer belt 1 of sand material and with the second conveyer belt 1 links to each other and is used for providing the feeding motor 19 of the conveying power of second conveyer belt, wherein, casting incasement group includes upper casting case 2 and lower casting case 13, and sets up the first mould of upper casting case 2 bottom and the second mould of setting in lower casting case 13 bottom constitutes paddle whole mould jointly.
Specifically, the pressing module further includes a third conveyor belt 14 disposed below the casting box group to convey the casting box group to the corresponding pressing position, and a first conveyor motor 16 connected to the third conveyor belt 14 to supply the conveying power of the third conveyor belt 14.
Specifically, the casting molding module further comprises a fourth conveying belt 11, a second conveying motor 12 and an electric sliding rail 6, wherein the fourth conveying belt 11 is arranged below the first mechanical arm 5 and is used for conveying molding paddles output by the first mechanical arm in the unpacking operation, the second conveying motor 12 is connected with the fourth conveying belt 11 and is used for providing conveying power for the fourth conveying belt 11, and the electric sliding rail 6 is connected with the first mechanical arm 5 and is used for adjusting the horizontal position of the first mechanical arm 5.
Specifically, the polishing module further includes a third conveyor motor 20 connected to the first conveyor belt 21 to provide a conveying power of the fourth conveyor belt.
Specifically, the variance of the number of finished product blade weights is calculated by calculating an average finished product blade weight according to the number of finished product blade weights detected by the weight sensor, and the variance of the number of finished product blade weights is calculated according to the average finished product blade weight.
Specifically, the calculation formula of the average diameter of the number of finished blades is as follows:
wherein W is the average diameter of a plurality of finished product paddles, wr is the diameter of the r-th finished product paddle, n is the number of the finished product paddles, and n is a natural number greater than or equal to 1.
Specifically, the calculation formula of the average specific surface area of the cracks on the plurality of finished paddles is as follows:
wherein M is the average specific surface area of cracks on a plurality of finished product paddles, ee is the crack specific surface area of the e-th finished product paddle, f is the number of the finished product paddles, and f is a natural number greater than or equal to 1.
The calculation formula of the crack specific surface area of the finished blade is as follows:
wherein E is the crack specific surface area of the finished blade, m1 is the surface crack area of the finished blade, and m0 is the surface area of the finished blade.
In particular, a preferred embodiment of the sanding assembly is an angle grinder, as will be appreciated by those skilled in the art, provided that the sanding function for the molded blade is accomplished with a basic sanding assembly and fourth conveyor belt configured sanding module.
According to the automatic production line, the sand mold casting process of the blade is automatically produced and detected through the sand mold casting process of the blade, the pressing module, the casting forming module, the polishing module and the central control module, the central control module calculates the variance of the weight of a plurality of finished blades according to the weight of the plurality of finished blades weighed by the weighing assembly and judges the stability of the production quality of the blade, the compaction degree of the sand mold of the blade is improved through increasing the pressing pressure of the pressing assembly to reduce sand mold slump, or the stability of the sand mold of the blade is improved through reducing the vibration frequency of the pressing assembly to reduce water evaporation, the stability of the production quality of the blade is improved, the pressing pressure of the pressing assembly is secondarily adjusted according to the average specific surface area of cracks on the plurality of finished blades after the pressing pressure of the pressing assembly is primarily adjusted, the air permeability of the sand mold of the blade is improved on the premise of avoiding sand mold slump, the vibration frequency of the vibration assembly is secondarily adjusted according to the duration used for pressing operation after the primary adjustment of the vibration frequency of the vibration assembly, and the time length used for reducing the pressing process is reduced, and the production efficiency and the production accuracy of the blade is improved.
With continued reference to fig. 1, the pressing assembly includes:
a pressing hammer 3 which is arranged above the casting box group and is used for pressing sand materials in the casting box group;
a first telescopic rod 4 connected to the pressing hammer 3 for adjusting the vertical position of the pressing hammer 3.
Specifically, the vibration assembly 15 includes;
a second mechanical arm 17 connected to the upper casting box 2 or the lower casting box 13 for vibrating the casting box group in the horizontal direction;
and a second telescopic rod 18 connected to the second mechanical arm 17 for providing vibration power of the second mechanical arm 17.
Specifically, the adjustment of the vibration frequency of the vibration component by the central control module is realized by adjusting the telescopic period of the second telescopic rod.
With continued reference to fig. 1, the central control module determines whether the stability of the blade production quality is within an allowable range according to the variance of the weight of a plurality of finished blades, wherein,
the central control module judges that the stability of the production quality of the blade is lower than an allowable range under the first variance condition and the second variance condition, wherein,
the central control module judges that the pressing pressure of the pressing assembly needs to be increased under the first differential condition;
the central control module preliminarily judges that the compactness of the blade sand mould is lower than an allowable range under the second variance condition, and secondarily judges the compactness of the blade sand mould according to the average diameters of a plurality of finished blades;
the first variance condition is that variances of the weights of a plurality of finished product paddles are larger than a preset first variance and smaller than or equal to a preset second variance; the second variance condition is that variances of the weights of a plurality of finished product paddles are larger than a preset second variance; the preset first variance is smaller than the preset second variance.
Specifically, the variance of the weight of a number of finished blades is denoted as X, the preset first variance is denoted as X1, and the preset second variance is denoted as X2.
With continued reference to fig. 1, the central control module is provided with a plurality of adjustment modes for increasing the pressing pressure of the pressing assembly according to the difference between the variances of the weights of a plurality of finished blades and the preset first variance under the condition of the first variance,
wherein, each pressure adjustment mode is different in adjustment magnitude to the pressing pressure of increase pressing assembly.
The first adjusting mode is that the central control module adjusts the pressing pressure of the pressing assembly to a first pressure by using a preset first pressure adjusting coefficient under the condition of a preset first variance value;
the second adjusting mode is that the central control module adjusts the pressing pressure of the pressing assembly to a second pressure by using a preset second pressure adjusting coefficient under the condition of a preset second variance difference value;
the preset first variance difference condition is that the variance of the weights of a plurality of finished blades and the preset first variance difference are smaller than or equal to the preset variance difference; the preset second variance difference condition is that the variance of the weights of a plurality of finished blades and the preset first variance are larger than the preset variance difference; the preset first pressure adjustment coefficient is smaller than the preset second pressure adjustment coefficient.
Specifically, the difference between the variances of the weights of a plurality of finished blades and the preset first variance is denoted as Δx, Δx=x-X1 is set, the preset variance difference is denoted as Δx0, the preset first pressure adjustment coefficient is denoted as α1, the preset second pressure adjustment coefficient is denoted as α2,1 < α1 < α2, the pressing pressure of the pressing assembly is denoted as P, the pressing pressure of the adjusted pressing assembly is denoted as P ', P' =p×αi is set, wherein αi is a preset i-th pressure adjustment coefficient, and i=1, 2 is set.
According to the automatic production line, the central control module is used for judging whether the stability of the production quality of the blades is within an allowable range according to the preset first variance and the preset second variance of the weight of a plurality of finished blades, the sand molds are unbalanced due to the fact that the pressing pressure is too low or sand materials are injected in a certain period in the preparation process, the loss weight of rough blades after polishing is further increased, the pressing pressure of the pressing assembly is adjusted by the central control module under the first variance condition through setting the preset first variance difference condition, the preset second variance difference condition, the preset first pressure adjusting coefficient and the preset second pressure adjusting coefficient, the loss of molten metal liquid is reduced and the quality of the finished blades is increased by increasing the pressing pressure of the pressing assembly, and the production efficiency and the production accuracy of the blades are further improved.
With continued reference to fig. 1, the central control module performs secondary determination on the compaction degree of the sand mold of the blade according to the average diameters of a plurality of finished blades under the second variance condition, wherein,
the central control module judges that the compactness of the blade sand mould is lower than the allowable range under the condition of the preset diameter, adjusts the vibration frequency of the vibration assembly,
the preset diameter condition is that the average diameter of a plurality of finished product paddles is larger than the preset diameter.
Specifically, the average diameter of a number of finished paddles is noted as W, and the preset diameter is noted as W0.
With continued reference to fig. 1, the central control module is provided with a plurality of adjustment modes for reducing the vibration frequency of the vibration assembly according to the difference between the average diameter of the plurality of finished blades and the preset diameter under the preset diameter condition,
wherein, each vibration frequency adjusting mode is different in adjusting magnitude for reducing the vibration frequency of the vibration component.
The first frequency adjusting mode is that the central control module adjusts the vibration frequency of the vibration component to a first vibration frequency by using a preset second frequency adjusting coefficient under the preset first diameter condition;
the second frequency adjusting mode is that the central control module adjusts the vibration frequency of the vibration component to a second vibration frequency by using a preset first frequency adjusting coefficient under the condition of a preset second diameter;
the preset first diameter condition is that the difference value between the average diameter of a plurality of finished product paddles and the preset diameter is smaller than or equal to the preset diameter difference value; the preset second diameter condition is that the difference value between the average diameter of a plurality of finished product paddles and the preset diameter is larger than the preset diameter difference value; the preset first frequency adjustment coefficient is smaller than the preset second frequency adjustment coefficient.
Specifically, the difference between the average diameter of a plurality of finished blades and the preset diameter is denoted as Δw, Δw=w-W0 is set, the preset diameter difference is denoted as Δw0, the preset first frequency adjustment coefficient is denoted as β1, the preset second frequency adjustment coefficient is denoted as β2, wherein 0 < β1 < β2 < 1, the vibration frequency is denoted as H, the adjusted vibration frequency is denoted as H ', H' =hχβj is set, wherein βj is the preset jth frequency adjustment coefficient, and j=1, 2 is set.
According to the automatic production line, the preset diameter condition is set, the central control module carries out secondary judgment on the compactness of the sand mould of the blades according to the average diameter of a plurality of finished blades, the vibration frequency of the vibration assembly is too high, so that the friction rate of sand materials is accelerated, the evaporation rate of water in the sand materials is accelerated due to generated heat, the acting force between the sand materials can be reduced due to the evaporation of the water, the sand mould generates additional hole structures in the mould closing process, the diameter of the blades is expanded, the preset first diameter condition, the preset second diameter condition, the preset first frequency adjustment coefficient and the preset second frequency adjustment coefficient are set, the central control module adjusts the vibration frequency of the vibration assembly, and the production efficiency and the production accuracy of the blades are further improved through reducing the evaporation of the water due to the reduction of the vibration frequency.
With continued reference to fig. 1, the central control module adjusts the pressing pressure of the pressing assembly, and then determines the air permeability of the blade sand mold according to the average specific surface area of the cracks on a plurality of finished blades, wherein,
the central control module judges that the air permeability of the blade sand mould is lower than the allowable range under the condition of the preset specific surface area, and secondarily adjusts the pressing pressure of the pressing assembly,
the preset specific surface area condition is that the average specific surface area of the cracks on a plurality of finished product paddles is larger than the preset specific surface area of the cracks.
Specifically, the average specific surface area of the cracks on a plurality of finished paddles is denoted as M, and the preset crack specific surface area is denoted as M0.
With continued reference to fig. 1, the central control module is provided with a plurality of secondary adjustment modes for reducing the pressing pressure of the pressing assembly according to the difference between the average specific surface area of the cracks on the plurality of finished blades and the preset specific surface area of the cracks under the condition of the preset specific surface area,
wherein, each secondary adjustment mode is different in adjustment magnitude of the pressing pressure for reducing the pressing assembly.
The first secondary adjustment mode is that the central control module adjusts the pressing pressure of the pressing assembly to a third pressure by using a preset third pressure adjustment coefficient under the condition of a preset first specific surface area difference value;
the second secondary adjustment mode is that the central control module adjusts the pressing pressure of the pressing assembly to a fourth pressure by using a preset fourth pressure adjustment coefficient under the condition of presetting a second specific surface area difference value;
the preset first specific surface area difference condition is that the difference value between the average specific surface area of the cracks on the plurality of finished product blades and the preset specific surface area of the cracks is smaller than or equal to the preset specific surface area difference value; the preset second specific surface area difference condition is that the difference between the average specific surface area of the cracks on the plurality of finished product blades and the preset specific surface area of the cracks is larger than the preset specific surface area difference; the preset third pressure adjustment coefficient is less than the preset fourth pressure adjustment coefficient.
Specifically, the difference between the average specific surface area of the cracks on the plurality of finished paddles and the preset specific surface area of the cracks is denoted as Δm, Δm=m-M0 is set, the preset specific surface area difference is denoted as Δm0, the preset third pressure adjustment coefficient is denoted as α3, the preset fourth pressure adjustment coefficient is denoted as α4,0 < α3 < α4 < 1, the pressing pressure of the pressing assembly after secondary adjustment is denoted as P ", P" =p' × (1- αk) is set, wherein αk is the preset kth pressure adjustment coefficient, and k=3, 4 is set.
According to the automatic production line, the preset specific surface area condition is set, the central control module judges the air permeability of the sand mould of the blade according to the average specific surface area of cracks on a plurality of finished blades, the air permeability of the sand mould is reduced due to the fact that the air holes among sand materials are reduced after the pressing pressure of the pressing assembly is increased, so that the safety of the blade is reduced due to the fact that air holes and cracks appear in the casting process, and the production efficiency and the production accuracy of the blade are further improved by setting the preset first specific surface area difference condition, the preset second specific surface area difference condition, the preset third pressure regulating coefficient and the preset fourth pressure regulating coefficient, the central control module secondarily regulates the pressing pressure of the pressing assembly, and the air permeability of the sand mould of the blade is improved on the premise that sand mould collapse is avoided.
With continued reference to fig. 1, after the central control module adjusts the vibration frequency of the vibration assembly, it determines whether the production efficiency is within an allowable range according to the length of time used in a single pressing process, where,
the central control module judges that the production efficiency is lower than the allowable range under the condition of the preset duration, and secondarily adjusts the vibration frequency of the vibration assembly;
the preset duration condition is that the time length used in a single pressing process is longer than the preset pressing duration.
Specifically, the time length used in the single pressing process is denoted as T, and the preset pressing time length is denoted as T0.
With continued reference to fig. 1, the central control module is provided with a plurality of secondary adjustment modes for increasing the vibration frequency of the vibration assembly according to the difference between the time length used in the single pressing process and the preset pressing time length under the condition of the preset time length,
wherein, each secondary adjustment mode is different in the adjustment of the vibration frequency of the vibration component.
The first frequency secondary adjustment mode is that the central control module adjusts the vibration frequency of the vibration component to a third vibration frequency by using a preset third frequency adjustment coefficient under the condition of a preset first time length difference value;
the second frequency secondary adjustment mode is that the central control module adjusts the vibration frequency of the vibration component to a fourth vibration frequency by using a preset fourth frequency adjustment coefficient under the condition of presetting a second duration difference value;
the preset first time length difference condition is that the difference between the time length used in the single pressing process and the preset pressing time length is smaller than or equal to the preset time length difference; the preset second time length difference condition is that the difference between the time length used in the single pressing process and the preset pressing time length is larger than the preset time length difference; the preset third frequency adjustment coefficient is smaller than the preset fourth frequency adjustment coefficient.
Specifically, the difference between the time length used in the single pressing process and the preset pressing time length is denoted as Δt, Δt=t-T0 is set, the preset time length difference is denoted as Δt0, the preset third frequency adjustment coefficient is denoted as β3, the preset fourth frequency adjustment coefficient is denoted as β4, wherein 1 < β1 < β2 < 2, the vibration frequency after the secondary adjustment is denoted as H ", H" =h' × (1+lnβg) is set, βg is a preset g-th frequency adjustment coefficient, and g=3, 4 is set.
Example 1
Preset variance difference Δx0=0.3 kg in this example 1 2 Presetting a first pressure adjustment coefficient alpha 1 = 1.2, presetting a second pressure adjustment coefficient alpha 2 = 1.3, pressing the pressing assembly to a pressing pressure P = 80Pa,
in this example, Δx=0.34 kg was obtained 2 The central control module judges DeltaX > DeltaX0 and adjusts the pressing pressure of the pressing assembly by using alpha 2, and the adjusted pressing pressure of the pressing assembly is recorded as P' =80 Pa×1.3=104 Pa.
According to the embodiment, the central control module adjusts the pressing pressure of the pressing assembly by using the corresponding pressure adjusting coefficient according to delta X, so that the sand mold tightness is improved, the production quality of the blade is improved, and the production efficiency and the production accuracy of the blade are further improved.
Thus far, the technical solution of the present invention has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present invention, and such modifications and substitutions will be within the scope of the present invention.
The foregoing description is only of the preferred embodiments of the invention and is not intended to limit the invention; various modifications and variations of the present invention will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. An automated sand mold casting production line for paddles, comprising:
the pressing module is used for outputting a blade sand mould by pressing sand in the casting box group and comprises a vibration component and a pressing component, wherein the vibration component is partially arranged below the casting box group and used for driving the casting box group to vibrate in the horizontal direction, and the pressing component is arranged above the casting box group and used for performing pressing operation on the sand in the casting box group;
the casting forming module is connected with the pressing module and used for casting the blade sand mould to output formed blades, and comprises a first mechanical arm and a casting pipeline, wherein the first mechanical arm is arranged above the casting box group and used for carrying out mould withdrawing operation, mould assembling operation and mould disassembling operation on the casting box group respectively, and the casting pipeline is arranged above the first mechanical arm and used for casting molten metal into the casting box group after the mould assembling operation is completed;
the polishing module is connected with the casting molding module and comprises a first conveying belt, a polishing assembly, a weight sensor and a visual sensor, wherein the first conveying belt is arranged at the output end of the casting molding module and used for conveying the molded blade, the polishing assembly is connected with the first conveying belt and used for polishing the molded blade to output a finished blade, the weight sensor is arranged below the first conveying belt and used for detecting the weight of the finished blade, and the visual sensor is arranged on the first conveying belt Fang Yongyi and used for detecting the diameter of the finished blade and the surface crack area of the finished blade respectively;
the central control module is respectively connected with the pressing module, the casting molding module and the polishing module and is used for carrying out primary adjustment on the pressing pressure of the pressing assembly when the stability of the production quality of the blades is judged to be lower than an allowable range according to the variance of the weights of a plurality of finished blades, or carrying out primary adjustment on the vibration frequency of the vibration assembly according to the average diameters of a plurality of finished blades;
secondly adjusting the pressing pressure of the pressing assembly according to the average specific surface area of the cracks on a plurality of finished paddles under the first condition;
and, secondarily adjusting the vibration frequency of the vibration assembly according to the length of time used for the pressing operation under the second condition;
the first condition is that the central control module completes primary adjustment of the pressing pressure of the pressing assembly; the second condition is that the central control module completes primary adjustment of the vibration frequency of the vibration assembly.
2. A sand mould casting automation line for a blade according to claim 1, wherein the press assembly comprises:
the pressing hammer is arranged above the casting box group and is used for pressing sand materials in the casting box group;
and the first telescopic rod is connected with the pressing hammer and is used for adjusting the vertical position of the pressing hammer.
3. The sand mold casting automation line of paddles according to claim 2, characterized in that said central control module determines whether the stability of the quality of the paddles production is within an allowable range according to the variance of the weight of a number of finished paddles,
the central control module judges that the stability of the production quality of the blade is lower than an allowable range under the first variance condition and the second variance condition, wherein,
the central control module judges that the pressing pressure of the pressing assembly needs to be increased under the first differential condition;
the central control module preliminarily judges that the compactness of the blade sand mould is lower than an allowable range under the second variance condition, and secondarily judges the compactness of the blade sand mould according to the average diameters of a plurality of finished blades;
the first variance condition is that variances of the weights of a plurality of finished product paddles are larger than a preset first variance and smaller than or equal to a preset second variance; the second variance condition is that variances of the weights of a plurality of finished product paddles are larger than a preset second variance; the preset first variance is smaller than the preset second variance.
4. A sand mold casting automation line for paddles according to claim 3, characterized in that said central control module is provided with a plurality of adjustment means for increasing the pressing pressure of said pressing assembly under said first variance according to the difference between the variance of the weight of a plurality of finished paddles and a preset first variance,
wherein, each pressure adjustment mode is different in adjustment magnitude to the pressing pressure of increase pressing assembly.
5. The automated sand mold casting production line for paddles according to claim 4, wherein said central control module makes a secondary determination of the densification degree of the sand mold of the paddles according to the average diameter of a number of finished paddles under a second variance condition, wherein,
the central control module judges that the compactness of the blade sand mould is lower than the allowable range under the condition of the preset diameter, adjusts the vibration frequency of the vibration assembly,
the preset diameter condition is that the average diameter of a plurality of finished product paddles is larger than the preset diameter.
6. The automated sand mold casting production line of paddles according to claim 5, wherein the central control module is provided with a plurality of adjustment modes for reducing the vibration frequency of the vibration assembly according to the difference between the average diameter of a plurality of finished paddles and the preset diameter under the preset diameter condition,
wherein, each vibration frequency adjusting mode is different in adjusting magnitude for reducing the vibration frequency of the vibration component.
7. The automated sand mold casting production line of paddles according to claim 6, wherein said central control module determines the gas permeability of the sand mold of the paddles according to the average specific surface area of the cracks on a number of finished paddles in said first condition, wherein,
the central control module judges that the air permeability of the blade sand mould is lower than the allowable range under the condition of the preset specific surface area, and secondarily adjusts the pressing pressure of the pressing assembly,
the preset specific surface area condition is that the average specific surface area of the cracks on a plurality of finished product paddles is larger than the preset specific surface area of the cracks.
8. The automated sand mold casting production line of paddles according to claim 7, characterized in that the central control module is provided with a secondary adjustment mode for reducing the pressing pressure of the pressing assembly according to the difference between the average specific surface area of the cracks on the finished paddles and the preset specific surface area under the preset specific surface area,
wherein, each secondary adjustment mode is different in adjustment magnitude of the pressing pressure for reducing the pressing assembly.
9. The automated sand mold casting line for paddles according to claim 8, wherein said central control module determines whether the paddle production efficiency is within an allowable range based on the time duration of a single pressing process under said second condition, wherein,
the central control module judges that the production efficiency is lower than the allowable range under the condition of the preset duration, and secondarily adjusts the vibration frequency of the vibration assembly;
the preset duration condition is that the time length used in a single pressing process is longer than the preset pressing duration.
10. The automated sand mold casting production line of paddles according to claim 9, characterized in that the central control module is provided with a plurality of secondary adjustment modes for increasing the vibration frequency of the vibration assembly according to the difference between the time length used in the single pressing process and the preset pressing time length under the preset time length condition,
wherein, each secondary adjustment mode is different in the adjustment of the vibration frequency of the vibration component.
CN202311049952.8A 2023-08-21 2023-08-21 Sand mo (u) ld casting automation line of paddle Pending CN116786809A (en)

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CN105834377A (en) * 2016-05-16 2016-08-10 侯升利 Full-automatic box molding equipment and casting production line based on equipment
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