阅读说明：本技术 智能混砂机系统 (Intelligent sand mixer system ) 是由 朱以松 周光照 于 2020-08-13 设计创作，主要内容包括：本发明提供铸造领域的一种智能混砂机系统,包括：混砂机、供料阀门、砂库、液料供给装置、振实台；所述砂库用于存储型砂并通过供料阀门向混砂机供给；砂库设置在混砂机上方；所述供料阀门用于控制所供给的型砂的种类和供砂量；供料阀门设置在砂库与混砂机之间；所述液料供给装置用于存储粘结剂和固化剂并向混砂机供给；所述混砂机用于输送型砂,并将型砂与粘结剂和固化剂混合后输出用于形成砂型的混合料；所述振实台布设在混砂机的出砂口下方,用于承载模型和套设于模型的砂箱,并用于通过振动实现对砂箱中的混合料的振实。本发明降低了人工劳动强度,提高了砂型的质量,也节约成本。(The invention provides an intelligent sand mixer system in the field of casting, which comprises: the device comprises a sand mixer, a feeding valve, a sand warehouse, a liquid material supply device and a jolt ramming table; the sand warehouse is used for storing the molding sand and supplying the molding sand to the sand mixer through a feeding valve; the sand warehouse is arranged above the sand mixer; the feeding valve is used for controlling the type and the sand supply amount of the supplied molding sand; the feeding valve is arranged between the sand warehouse and the sand mixer; the liquid material supply device is used for storing the adhesive and the curing agent and supplying the adhesive and the curing agent to the sand mixer; the sand mixer is used for conveying the molding sand, mixing the molding sand with the binder and the curing agent and outputting a mixture for forming the sand mold; the compaction table is arranged below a sand outlet of the sand mixer and used for bearing the model and sleeving the sand box of the model and realizing compaction of the mixture in the sand box through vibration. The invention reduces the labor intensity of workers, improves the quality of the sand mold and saves the cost.)

1. An intelligent sand mixer system, comprising: the device comprises a sand mixer (1), a feeding valve (2), a sand warehouse (3), a liquid material supply device (4) and a vibrating table (5);

the sand storage (3) is used for storing molding sand and supplying the molding sand to the sand mixer (1) through the feeding valve (2); the sand warehouse (3) is arranged above the sand mixer (1);

the feeding valve (2) is used for controlling the type and the sand supply amount of the supplied molding sand; the feeding valve (2) is arranged between the sand warehouse (3) and the sand mixer (1);

the liquid material supply device (4) is used for storing the adhesive and the curing agent and supplying the adhesive and the curing agent to the sand mixer;

the sand mixer (1) is used for conveying molding sand, mixing the molding sand with a binder and a curing agent and outputting a mixture for forming a sand mold (9);

the compaction table (5) is arranged below a sand outlet of the sand mixer (1) and used for bearing the model (6) and the sand box (7) sleeved on the model (6) and achieving compaction of the mixture in the sand box (7) through vibration.

2. An intelligent sand mixer system as claimed in claim 1, characterized in that the system further comprises a model (6), a sand box (7), a model conveying device (8);

the sand box (7) is sleeved on the model (6); the model conveying devices (8) are arranged on two sides of the jolt ramming table (5), the model conveying device (8) on one side is used for bearing the model (6) and the empty sand box (7) sleeved on the model (6) and conveying the model and the empty sand box to the jolt ramming table (5), and the model conveying device (8) on the other side is used for outputting the model (6) and the sand filled sand box (7) sleeved on the model (6).

3. Intelligent roller mill system according to claim 1 or 2,

the sand warehouse (3) is divided into at least 2 sand grids (301) for storing different types of molding sand;

the feeding valve (2) comprises a gate valve (201), a buffer sand hopper (202), a sand mixing proportional valve (203) and a discharging sand hopper (204); the buffer sand hopper (202) is arranged below the sand warehouse (3), and the buffer sand hopper (202) is divided into a plurality of buffer grids (2021) which are in one-to-one correspondence with the sand grids (301); a gate valve (201) is arranged in each buffer grid (2021); the sand mixing proportional valve (203) is connected below the buffer sand hopper (202); each buffer grid of the buffer sand hopper (202) corresponds to each sand molding channel in the sand mixing proportional valve (203) one by one; the blanking sand hopper (204) is connected below the sand mixing proportional valve (203); the blanking sand hopper (204) is butted with a sand inlet of the sand mixer (1).

4. The intelligent roller mill system of claim 3,

the sand mixing proportional valve (203) comprises a flow orifice plate (2031); the flow orifice plate (2031) is provided with sand passing holes (2032) which correspond to the buffer grids (2021) and the sand grids (301) and can adjust the flow; a pneumatic valve plate (2033) is arranged below each sand passing hole (2032) to realize the on-off of the sand passing holes; each pneumatic valve plate (2033) is driven by a corresponding flow regulating cylinder (2037).

5. The intelligent roller mill system of claim 4,

the sand warehouse (3) is at least divided into a surface sand grid and a back sand grid;

a quantitative pore plate (2034) is arranged in the sand passing hole (2032) corresponding to the back sand grid;

a flow plugboard (2035) is arranged below the sand passing hole (2032) corresponding to the surface sand grid, and the flow plugboard (2035) is connected to the adjusting screw component (2036).

6. The intelligent roller mill system of claim 5,

the sand warehouse (3) is divided into a first sand surface grid (301A), a second sand surface grid (301B) and a back sand grid (301C); the back sand lattice (301C) is positioned in the middle of the two face sand lattices (301A and 301B);

on the flow orifice plate (2031), one sand passing hole corresponding to the back sand grid is positioned between two groups of sand passing holes corresponding to the face sand grid; each group of sand passing holes corresponding to the face sand grids comprise two sand passing holes, the on-off of the sand passing holes is controlled through a pneumatic valve plate (2033) which is respectively configured, and the two pneumatic valve plates of the group of sand passing holes are respectively driven through flow adjusting cylinders (2037) which are arranged on two sides of a flow orifice plate (2031).

7. Intelligent roller mill system according to claim 1 or 2,

the sand mixer (1) comprises a sand mixer base (102), a sand mixer big arm (103) and a sand mixer small arm (104);

the large arm (103) and the small arm (104) of the sand mixer are both of cylinder structures, and a molding sand conveying mechanism is arranged in the cylinder structures; the rear end of the big arm (103) of the sand mixer is provided with a sand inlet; the rear end of the large arm (103) of the sand mixer is connected with a base (102) of the sand mixer, and a large arm rotary driving mechanism is arranged in the base (102) of the sand mixer and used for driving the large arm (103) of the sand mixer to rotate; a large arm pitching driving mechanism (105) is further arranged on the front side of the sand mixer base (102) and used for driving the large arm (103) of the sand mixer to pitch; the front end of the big arm (103) of the sand mixer is connected with the rear end of the small arm (104) of the sand mixer; a small arm rotation driving mechanism is arranged at the front end of the large arm (103) of the sand mixer and used for driving the small arm (104) of the sand mixer to rotate; a stirring mechanism is also arranged in the small arm (104) of the sand mixer; the lower part of the front end of the small arm (104) of the sand mixer is provided with a sand outlet.

8. Intelligent roller mill system according to claim 1 or 2,

the sand mixer (1) and the feeding valve (2) are controlled by a controller; after the model (6) stuck with the identification label finishes the action of the sand covering box (7), the model is transferred to the compaction table (5) through a model conveying device (8); the radio frequency recognizer recognizes the label information on the model (6) and feeds the label information back to the controller; the controller controls the sand mixer (1) to start automatic track sand filling according to corresponding model information in the database; the controller controls the feed valve (2) to adjust the sand supply ratio in real time, realize the switching of the back sand and the surface sand and realize the variable sand supply to the model; in the sand filling process, the vibration of the compaction table (5) is started in time according to the set control logic, and the excitation force, the excitation frequency and the vibration duration required by the corresponding sand mold (9) are provided according to the model label information, so that the molding process is completed.

9. Intelligent roller mill system according to claim 1 or 2,

the liquid material supply device (4) comprises an adhesive supply subsystem (41) and a curing agent supply subsystem (42) which are controlled by a controller;

the adhesive supply subsystem (41) comprises an adhesive container (411), an adhesive filter (412), an adhesive delivery pump (413), an adhesive flow meter (414) and an adhesive pneumatic tee joint (415);

the adhesive container (411) is connected with one end of an adhesive filter (412) through a pipeline, the other end of the adhesive filter (412) is connected with one end of an adhesive delivery pump (413) through a pipeline, and the other end of the adhesive delivery pump (413) is connected with the first end of an adhesive pneumatic tee joint (415) through a pipeline; a binder flow meter (414) is arranged on a pipeline between the binder delivery pump (413) and the binder pneumatic tee joint (415); the second end of the adhesive pneumatic tee joint (415) is connected with an adhesive container (411) through a pipeline, and the third end of the adhesive pneumatic tee joint is connected with a small arm (104) of the sand mixer (1) through a pipeline; the controller is connected with the adhesive delivery pump (413) through a first frequency converter (416); the cement flowmeter (414) is electrically connected with the controller;

the curing agent supply subsystem (42) comprises a curing agent container (421), a curing agent filter (422), a curing agent delivery pump (423), a curing agent flow meter (424) and a curing agent pneumatic tee joint (425);

the curing agent container (421) is connected with one end of a curing agent filter (422) through a pipeline, the other end of the curing agent filter (422) is connected with one end of a curing agent delivery pump (423) through a pipeline, and the other end of the curing agent delivery pump (423) is connected with the first end of a curing agent pneumatic tee joint (425) through a pipeline; a curing agent flow meter (424) is arranged on a pipeline between the curing agent delivery pump (423) and the curing agent pneumatic tee joint (425); the second end of the curing agent pneumatic tee joint (425) is connected with the curing agent container (421) through a pipeline, and the third end is connected with a sand mixer small arm (104) in the sand mixer (1) through a pipeline; the controller is connected with a curing agent delivery pump (423) through a second frequency converter (426); the curing agent flow meter (424) is electrically connected to the controller.

10. The intelligent roller mill system of claim 9,

the curing agent supply subsystem (42) is provided with two sets which are respectively used for supplying two curing agents with different curing rates;

after the sand mixer is started, according to the ambient temperature, the humidity, the sand inlet temperature and the sand inlet weight, the controller automatically calculates the theoretical flow needed by the binder and the curing agent according to the control program, and correspondingly controls the rotating speed of the binder delivery pump and the curing agent delivery pump to output the calculated theoretical flow; and the controller continuously corrects the rotating speeds of the binder delivery pump and the curing agent delivery pump so that the actual flow of the binder and the curing agent is within the required flow tolerance range.

11. Intelligent roller mill system according to claim 1 or 2,

the compaction table (5) comprises a compaction base (501), an air spring (502), a compaction frame (503), a transmission channel (504) and a vibration motor (505);

an air spring (502) is arranged on the tap base (501), and the tap frame (503) is connected to the air spring (502); the tap frame (503) is positioned in the middle area of the tap base (501), and the two side areas of the tap base (501) are provided with transmission channels (504); the vibration motor (505) is installed on the jolt frame (503).

Technical Field

The invention relates to the technical field of casting mechanical equipment, in particular to an intelligent sand mixer system.

Background

At present, a sand mixer is the core in a resin sand molding line in China, and sand filling molding must be completed by manual assistance, so that the labor intensity of a sand mixer is high, and a working area has more harmful gas, which is not beneficial to the occupational health of workers.

The traditional liquid material control system of the sand mixer adopts fixed proportion adding amount of resin and curing agent no matter the size and difference of the model. The resin liquid is expensive, which causes a great deal of waste. And the sand mixer can not realize variable sand supply to the model.

The existing compaction table adopts fixed exciting force and exciting frequency no matter the size and difference of a model, so that the compactness of a sand mold is poor.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, and provides an intelligent sand mixer system which can realize automatic sand mixing operation, reduce the labor intensity of workers, improve the quality of sand molds and realize the proportion control of a binder and a curing agent.

The embodiment of the invention adopts the technical scheme that:

an intelligent roller mill system comprising: the device comprises a sand mixer, a feeding valve, a sand warehouse, a liquid material supply device and a jolt ramming table;

the sand warehouse is used for storing the molding sand and supplying the molding sand to the sand mixer through a feeding valve; the sand warehouse is arranged above the sand mixer;

the feeding valve is used for controlling the type and the sand supply amount of the supplied molding sand; the feeding valve is arranged between the sand warehouse and the sand mixer;

the liquid material supply device is used for storing the adhesive and the curing agent and supplying the adhesive and the curing agent to the sand mixer;

the sand mixer is used for conveying the molding sand, mixing the molding sand with the binder and the curing agent and outputting a mixture for forming the sand mold;

the compaction table is arranged below a sand outlet of the sand mixer and used for bearing the model and sleeving the sand box of the model and realizing compaction of the mixture in the sand box through vibration.

Further, the system also comprises a model, a sand box and a model conveying device;

the sand box is sleeved on the model; the model conveying devices are arranged on two sides of the jolt ramming table, the model conveying device on one side is used for bearing the model and the empty sand box sleeved on the model and conveying the model and the empty sand box to the jolt ramming table, and the model conveying device on the other side is used for outputting the model and the sand box sleeved on the model and subjected to sand filling.

Further, the sand silo is divided into at least 2 sand grids for storing different types of molding sand;

the feeding valve comprises a gate valve, a buffer sand hopper, a sand mixing proportional valve and a discharging sand hopper; the buffer sand hopper is arranged below the sand warehouse and is divided into a plurality of buffer grids which correspond to the sand grids one by one; a gate valve is arranged in each cache grid; the sand mulling proportional valve is connected below the buffer sand hopper; each buffer grid of the buffer sand hopper corresponds to each sand molding channel in the sand mulling proportional valve one by one; the blanking sand hopper is connected below the sand mulling proportional valve; the blanking sand hopper is butted with a sand inlet of the sand mixer.

Further, the sand mulling proportioning valve includes a flow orifice plate; the flow pore plate is provided with sand passing holes which correspond to the cache grids and the sand grids and can adjust the flow; a pneumatic valve plate is arranged below each sand passing hole to realize the connection and disconnection of the sand passing holes; each pneumatic valve plate is driven by a corresponding flow regulating cylinder.

Furthermore, the sand warehouse is at least divided into a surface sand grid and a back sand grid;

a quantitative pore plate is arranged in the sand passing hole corresponding to the back sand grid;

and a flow plugboard is arranged below the sand passing hole corresponding to the surface sand grid and connected to the adjusting screw assembly.

Furthermore, the sand warehouse is divided into a first surface sand grid, a second surface sand grid and a back sand grid; the back sand lattice is positioned between the two face sand lattices;

on the flow pore plate, one sand passing hole corresponding to the back sand lattice is positioned between two groups of sand passing holes corresponding to the face sand lattice; each group of sand passing holes corresponding to the face sand grids comprise two sand passing holes, the on-off of the sand passing holes is controlled through respective pneumatic valve plates, and the two pneumatic valve plates of the group of sand passing holes are driven through flow adjusting cylinders arranged on two sides of the flow orifice plate respectively.

Further, the sand mixer comprises a sand mixer base, a sand mixer large arm and a sand mixer small arm;

the large arm and the small arm of the sand mixer are both of cylinder structures, and a molding sand conveying mechanism is arranged in the cylinder structures; the rear end of the big arm of the sand mixer is provided with a sand inlet; the rear end of the large arm of the sand mixer is connected with a base of the sand mixer, and a large arm rotation driving mechanism is arranged in the base of the sand mixer and used for driving the large arm of the sand mixer to rotate; a large arm pitching driving mechanism is also arranged on the front side of the base of the sand mixer and used for driving the large arm of the sand mixer to pitch; the front end of the large arm of the sand mixer is connected with the rear end of the small arm of the sand mixer; the front end of the big arm of the sand mixer is provided with a small arm rotation driving mechanism for driving the small arm of the sand mixer to rotate; a stirring mechanism is also arranged in the small arm of the sand mixer; the lower part of the front end of the small arm of the sand mixer is provided with a sand outlet.

Further, the sand mixer and the feeding valve are controlled by the controller; after the model with the identification label finishes the action of the sand box set, the model is transferred to a compaction table through a model conveying device; the wireless radio frequency recognizer recognizes the label information on the model and feeds the label information back to the controller; the controller controls the sand mixer to start automatic track sand filling according to the corresponding model information in the database; the controller controls the feeding valve to adjust the sand supply ratio in real time, so that the switching between back sand and surface sand is realized, and the variable sand supply to the model can be realized; and in the sand filling process, timely starting vibration of the compaction table according to a set control logic, and providing the exciting force, the exciting frequency and the vibration duration required by the corresponding sand mold according to the model label information to finish the molding process.

Further, the liquid material supply device comprises a binder supply subsystem and a curing agent supply subsystem controlled by the controller;

the binder supply subsystem comprises a binder container, a binder filter, a binder delivery pump, a binder flowmeter and a binder pneumatic tee joint;

the other end of the binder conveying pump is connected with the first end of the binder pneumatic tee joint through a pipeline; a binder flowmeter is arranged on a pipeline between the binder delivery pump and the binder pneumatic tee; the second end of the binder pneumatic tee joint is connected with a binder container through a pipeline, and the third end of the binder pneumatic tee joint is connected with a small arm of a sand mixer in the sand mixer through a pipeline; the controller is connected with the adhesive delivery pump through a first frequency converter; the binder flowmeter is electrically connected with the controller;

the curing agent supply subsystem comprises a curing agent container, a curing agent filter, a curing agent delivery pump, a curing agent flowmeter and a curing agent pneumatic tee joint;

the curing agent container is connected with one end of a curing agent filter through a pipeline, the other end of the curing agent filter is connected with one end of a curing agent delivery pump through a pipeline, and the other end of the curing agent delivery pump is connected with the first end of a curing agent pneumatic tee joint through a pipeline; a curing agent flow meter is arranged on a pipeline between the curing agent delivery pump and the curing agent pneumatic tee; the second end of the curing agent pneumatic tee joint is connected with a curing agent container through a pipeline, and the third end of the curing agent pneumatic tee joint is connected with a small arm of a sand mixer in the sand mixer through a pipeline; the controller is connected with the curing agent delivery pump through a second frequency converter; the curing agent flowmeter is electrically connected with the controller.

Furthermore, the curing agent supply subsystem is provided with two sets which are respectively used for supplying two curing agents with different curing rates;

after the sand mixer is started, according to the ambient temperature, the humidity, the sand inlet temperature and the sand inlet weight, the controller automatically calculates the theoretical flow needed by the binder and the curing agent according to the control program, and correspondingly controls the rotating speed of the binder delivery pump and the curing agent delivery pump to output the calculated theoretical flow; and the controller continuously corrects the rotating speeds of the binder delivery pump and the curing agent delivery pump so that the actual flow of the binder and the curing agent is within the required flow tolerance range.

Further, the compaction table comprises a compaction base, an air spring, a compaction frame, a transmission channel and a vibration motor;

an air spring is arranged on the tap base, and the tap frame is connected to the air spring; the tap frame is positioned in the middle area of the tap base, and the two side areas of the tap base are provided with transmission channels; the vibrating motor is installed on the jolt ramming frame.

The invention has the technical effects that: the sand mixing, sand filling and jolting operations can be automatically completed according to the model information, the sand supply ratio can be adjusted in real time, the switching between back sand and surface sand is realized, and variable sand supply to the model can be realized; the liquid material is supplied accurately, the using amount of the adhesive/curing agent can be saved, and the cost is reduced; according to the model RFID label information, the exciting force, the exciting frequency and the corresponding vibration duration needed by the corresponding sand mold can be provided, and the optimal compactness of the sand mold is provided.

Drawings

Fig. 1 is a schematic diagram of an intelligent sand mixer system in an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a sand silo and a feed valve in the embodiment of the invention.

Fig. 3 is a schematic structural diagram of a sand mulling proportioning valve in the embodiment of the invention.

FIG. 4 is a schematic view of a liquid material supply apparatus according to an embodiment of the present invention.

Fig. 5A and 5B are schematic views of a tapping table in an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

An embodiment of the present invention provides an intelligent sand mixer system, as shown in fig. 1, including: the device comprises a sand mixer 1, a feeding valve 2, a sand warehouse 3, a liquid material feeding device 4 and a compaction table 5; the method can also comprise the following steps: a model 6, a sand box 7 and a model conveying device 8;

the sand reservoir 3 is used for storing molding sand and supplying the molding sand to the sand mixer 1 through the feeding valve 2; the sand silo 3 is arranged above the sand mixer 1;

the supply valve 2 is used for controlling the type and amount of supplied molding sand; the feeding valve 2 is arranged between the sand warehouse 3 and the sand mixer 1;

the liquid material supply device 4 is used for storing the adhesive and the curing agent and supplying the adhesive and the curing agent to the sand mixer;

the sand mixer 1 is used for conveying molding sand, mixing the molding sand with a binder and a curing agent and outputting a mixture for forming a sand mold 9;

the compaction table 5 is arranged below a sand outlet of the sand mixer 1, is used for bearing the model 6 and the sand box 7 sleeved on the model 6, and is used for realizing compaction of the mixture in the sand box 7 through vibration.

The sand box 7 is sleeved on the model 6, so that the mixture can be prevented from falling from the side surface of the model during sand filling; the model conveying devices 8 are arranged on two sides of the jolt ramming table 5, the model conveying device 8 on one side is used for bearing the model 6 and the empty sand box 7 sleeved on the model 6 and conveying the empty sand box 7 to the jolt ramming table 5, and the model conveying device 8 on the other side is used for outputting the model 6 and the sand filled sand box 7 sleeved on the model 6; filling a mixture into the sand box 7 after sand filling, and compacting and curing to form a sand mold 9; the model conveying device 8 can adopt a motorized roller bed;

in a preferred embodiment, the model 6 is tagged with an identification tag, such as an RFID tag;

after the sand mold 9 is taken out, it is separated from the mold 6 and can be used for casting.

When the sand mould 9 is manufactured, in order to save cost as much as possible, the molding sand is divided into back sand and surface sand, and the area of the sand mould 9 which does not need to be in contact with a casting can be filled with a mixture containing the back sand, because the back sand is cheap; the area of the sand mold 9, which needs to be contacted with the casting, namely the area close to the molding surface of the sand mold is filled with the mixture containing the facing sand, the price of the facing sand is high, but the surface quality of the formed sand mold 9 is good;

as shown in fig. 2, the sand silo 3 is divided into at least 2 sand grids 301 for storing different kinds of molding sand; in a specific embodiment, the sand silo 3 is divided into a first sand-facing grid 301A, a second sand-facing grid 301B and a back-sand grid 301C for storing the sand-facing grid a, the sand-facing grid B and the back-sand grid C, respectively; the back sand lattice 301C is positioned between the two face sand lattices 301A and 301B;

as shown in fig. 2 and 3, the feed valve 2 comprises a gate valve 201, a buffer sand hopper 202, a sand mixing proportional valve 203 and a blanking sand hopper 204; the buffer sand hopper 202 is arranged below the sand warehouse 3, and the buffer sand hopper 202 is divided into a plurality of buffer grids 2021 which are in one-to-one correspondence with the sand grids 301; the gate valve 201 is arranged in each buffer grid 2021; the sand mulling proportional valve 203 is connected below the buffer sand hopper 202; each buffer grid of the buffer sand hopper 202 corresponds to each sand molding channel in the sand mulling proportional valve 203 one by one; the blanking sand hopper 204 is connected below the sand mulling proportional valve 203; the blanking sand hopper 204 is butted with a sand inlet of the sand mixer 1; a sand inlet cone hopper 101 is arranged at a sand inlet of the sand mixer 1;

the gate valve 201 can adopt a manual gate valve or a pneumatic gate valve, and the supply of molding sand can be cut off when the gate valve is closed, so that the sand mixer proportional valve 203, the sand mixer 1 and the like can be assembled or overhauled conveniently by maintenance personnel; in this embodiment, the buffer cells corresponding to the sand-backed cells 301C are configured as pneumatic gate valves,

as shown in fig. 3, the mullion proportioning valve 203 includes a flow orifice 2031; the flow orifice plate 2031 is provided with sand passing holes 2032 which correspond to the cache grids 2021 and the sand grids 301 and can adjust the flow; a pneumatic valve plate 2033 is arranged below each sand passing hole 2032 to realize the on-off of the sand passing holes; each pneumatic valve plate 2033 is driven by a corresponding flow rate adjustment cylinder 2037;

the quantitative orifice plates 2034 are arranged in the sand passing holes 2032 corresponding to the back sand grids 301C, and since the sand supply amount of the back sand only needs to be roughly adjusted, the quantitative orifice plates 2034 with different calibers can be replaced;

a flow plugboard 2035 is arranged below the sand passing hole 2032 corresponding to the surface sand grids 301A and 301B, and the flow plugboard 2035 is connected to the adjusting screw assembly 2036; the flow rate of the sand passing holes 2032 corresponding to the face sand grids can be finely adjusted by adjusting the flow rate inserting plate 2035 through the adjusting screw assembly 2036, so that the fine adjustment requirement of the sand supply amount of the face sand is met; the flow plug 2035 is located above the corresponding pneumatic valve plate 2033;

in a specific embodiment, one sand passing hole corresponding to the back sand lattice is positioned between two groups of sand passing holes corresponding to the face sand lattice; each group of sand passing holes corresponding to the face sand grids comprises two sand passing holes, the on-off of the two sand passing holes is controlled by a pneumatic valve plate 2033 which is respectively configured, and the two pneumatic valve plates of the group of sand passing holes are respectively driven by flow adjusting cylinders 2037 which are arranged at two sides of a flow orifice plate 2031; each group of sand passing holes corresponding to the face sand grids are arranged into two groups, so that the sand supply amount of the face sand can be finely adjusted in a larger range;

as shown in fig. 1, the mixer 1 includes a mixer base 102, a mixer large arm 103, and a mixer small arm 104;

the large arm 103 and the small arm 104 of the sand mixer are both of a cylinder structure, and a sand conveying mechanism, such as a conveying belt, is arranged in the cylinder structure; the rear end of the big arm 103 of the sand mixer is provided with a sand inlet, and a sand inlet cone 101 can be arranged at the sand inlet; the rear end of the large arm 103 of the sand mixer is connected to the base 102 of the sand mixer, and a large arm rotation driving mechanism is arranged in the base 102 of the sand mixer and can be used for driving the large arm 103 of the sand mixer to rotate within a range of 120 degrees; the front side of the sand mixer base 102 is also provided with a large arm pitching driving mechanism 105 which can be used for driving the large arm 103 of the sand mixer to pitch; the front end of the large arm 103 of the sand mixer is connected with the rear end of the small arm 104 of the sand mixer; the front end of the big arm 103 of the sand mixer is provided with a small arm rotation driving mechanism which can drive the small arm 104 of the sand mixer to rotate within the range of 260 ℃; the small arm 104 of the sand mixer is also provided with a stirring mechanism, such as a stirring knife assembly, so that the molding sand (back sand or face sand) can be mixed with the binder and the curing agent and then output; a sand outlet is arranged at the lower part of the front end of the small arm 104 of the sand mixer; in some embodiments, the large arm rotary driving mechanism and the small arm rotary driving mechanism both adopt motor rotary driving mechanisms; the boom pitch drive 105 employs a variable stroke cylinder;

the sand mixing proportional valve 203 in the sand mixer 1 and the feed valve 2 and the pneumatic gate valve in some embodiments are controlled by a controller; in the embodiment, a PLC controller is adopted; after the model 6 with the RFID label finishes the action of the sand covering box 7, the model is transferred to the compaction table 5 through the model conveying device 8; the radio frequency recognizer recognizes the label information on the model 6 and feeds the label information back to the controller; the controller controls the sand mixer 1 to start automatic track sand filling according to corresponding model information in the database; the controller controls the feed valve 2 to adjust the sand supply ratio in real time, so that the switching between back sand and surface sand is realized, and the variable sand supply to the model can be realized; in the sand filling process, the vibration table 5 is started to vibrate in time (the starting time corresponding to each model may be different) according to a set control logic, and the excitation force, the excitation frequency and the vibration duration required by the corresponding sand mold are provided according to the model label information, so that the molding process is completed.

As shown in fig. 4, the liquid material supply device 4 includes an adhesive supply subsystem 41 and a curing agent supply subsystem 42 controlled by a controller;

the intelligent sand mixer system is provided with an electric control cabinet 10, and a PLC controller is arranged in the electric control cabinet 10;

the adhesive supply subsystem 41 comprises an adhesive container 411, an adhesive filter 412, an adhesive delivery pump 413, an adhesive flow meter 414 and an adhesive pneumatic tee 415;

the adhesive container 411 is connected with one end of an adhesive filter 412 through a pipeline, the other end of the adhesive filter 412 is connected with one end of an adhesive delivery pump 413 through a pipeline, and the other end of the adhesive delivery pump 413 is connected with the first end of an adhesive pneumatic tee 415 through a pipeline; a binder flow meter 414 is arranged on a pipeline between the binder delivery pump 413 and the binder pneumatic tee 415; the second end of the binder pneumatic tee 415 is connected with the binder container 411 through a pipeline, and the third end is connected with the small arm 104 of the sand mixer 1 through a pipeline; the controller is connected with an adhesive delivery pump 413 through a first frequency converter 416; the cement flow meter 414 is electrically connected to the controller;

the curing agent supply subsystem 42 comprises a curing agent container 421, a curing agent filter 422, a curing agent delivery pump 423, a curing agent flow meter 424 and a curing agent pneumatic tee joint 425;

the curing agent container 421 is connected with one end of a curing agent filter 422 through a pipeline, the other end of the curing agent filter 422 is connected with one end of a curing agent delivery pump 423 through a pipeline, and the other end of the curing agent delivery pump 423 is connected with the first end of a curing agent pneumatic tee 425 through a pipeline; a curing agent flow meter 424 is arranged on a pipeline between the curing agent delivery pump 423 and the curing agent pneumatic tee 425; the second end of the curing agent pneumatic tee 425 is connected with a curing agent container 421 through a pipeline, and the third end is connected with a sand mixer small arm 104 in the sand mixer 1 through a pipeline; the controller is connected with a curing agent delivery pump 423 through a second frequency converter 426; the curing agent flow meter 424 is electrically connected to the controller;

in a preferred embodiment, the curing agent supply subsystem 42 is configured with two sets for supplying two curing agents having different curing rates; in summer, the temperature is high, the proportion of the curing agent is reduced when the curing agent is used as a medium-fast curing agent, the proportion of the curing agent is increased when the curing agent is used as a medium-fast curing agent, and even the curing agent is completely used as a slow curing agent, otherwise, the curing agent is used in winter;

the adhesive pneumatic tee 415 and the curing agent pneumatic tee 425 have the functions that when no adhesive or curing agent needs to be supplied, the adhesive in a pipeline between the adhesive container 411 and the adhesive pneumatic tee 415 and the curing agent in a pipeline between the curing agent container 421 and the curing agent pneumatic tee 425 can flow back to the corresponding containers;

the intelligent sand mixer system is provided with an ambient temperature and humidity sensor and a sand inlet temperature sensor; the sand inlet temperature sensor is usually arranged at a sand outlet at the lower part of the sand warehouse; a sand weight sensor is arranged in the large arm of the sand mixer; after the sand mixer is started, according to the ambient temperature, the humidity, the sand inlet temperature and the sand inlet weight, the controller automatically calculates the theoretical flow needed by the binder and the curing agent according to the control program, and correspondingly controls the rotating speed of the binder delivery pump and the curing agent delivery pump to output the calculated theoretical flow; the controller continuously corrects the rotating speeds of the binder delivery pump and the curing agent delivery pump, so that the actual flow of the binder and the curing agent is within the required flow tolerance range, and the precise control of the PID supply flow of the liquid material is realized.

As shown in fig. 5A and 5B, the tapping platform 5 includes a tapping base 501, an air spring 502, a tapping frame 503, a conveying passage 504, and a vibration motor 505;

an air spring 502 is arranged on the tap base 501, and the tap frame 503 is connected to the air spring 502; the tap frame 503 is located in the middle area of the tap base 501, and the two side areas of the tap base 501 are provided with transmission channels 504; the vibration motor 505 is mounted on the jolt frame 503; the transmission channel 504 can adopt a motorized roller bed;

the vibration motor 505 comprises two sets of motors 505A, 505B with different power; when the sleeved model 6 enters a sand filling and compacting station, the wireless radio frequency identifier identifies the label information on the model 6 and feeds the label information back to the controller; the controller starts a large power motor 505A or a small power motor 505B corresponding to the model 6 according to the existing model parameters to perform asynchronous synchronous rotation; by configuring two groups of vibration motors with different sizes, the vibration exciting force and the vibration exciting frequency can be adjusted according to the size and the weight of the model when vibration is realized, so that the compaction requirements of different workpiece models are met; the air spring not only provides a carrier for the vibrating frame 503 to vibrate, but also can realize the lifting of the vibrating frame 503 by adjusting the air pressure so as to connect or output the model 6 and the sand box 7 sleeved on the model 6.

Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.