阅读说明：本技术 一种射砂机的垂直升降机构 (Vertical lifting mechanism of sand shooting machine ) 是由 刘德军 黄玉贤 戴建军 严静 于 2020-06-03 设计创作，主要内容包括：本发明提供一种射砂机的垂直升降机构,属于射砂机技术领域,包括方形的底座,底座的顶部横向固定安装有支撑箱体,支撑箱体的正表面固定安装有支撑抬升机构,支撑抬升机构包括与支撑箱体固定支撑连接的第一电动伸缩杆,第一电动伸缩杆的伸缩端固定安装有用于放置工件的支撑漏斗,支撑漏斗的顶部两边侧均固定安装有侧壁支撑挡板,本发明通过借助抽液压缸和吸液软管方便将储存放置在储料箱体内部的混合砂芯进行抽离,并且借助射芯压缸以便于将抽出的砂芯原料进行加压导出,并且通过吸液软管即可在抽芯的过程中,将砂芯最终导入进喷砂头再由喷砂头的加压喷砂作用下。(The invention provides a vertical lifting mechanism of a sand shooting machine, belonging to the technical field of sand shooting machines, comprising a square base, wherein the top of the base is transversely and fixedly provided with a supporting box body, the front surface of the supporting box body is fixedly provided with a supporting and lifting mechanism, the supporting and lifting mechanism comprises a first electric telescopic rod fixedly connected with the supporting box body in a supporting way, the telescopic end of the first electric telescopic rod is fixedly provided with a supporting funnel for placing a workpiece, two sides of the top of the supporting funnel are fixedly provided with side wall supporting baffles, the invention is convenient to pump out a mixed sand core stored in a storage box body by means of a hydraulic pumping cylinder and a liquid suction hose, and the core shooting cylinder is used for pressurizing and guiding out the extracted raw materials of the sand core, and the sand core can be finally guided into the sand blasting head through the liquid suction hose in the core pulling process and then is subjected to the pressurizing and sand blasting action of the sand blasting head.)

1. The vertical lifting mechanism of the sand shooting machine comprises a square base (1) and is characterized in that a supporting box body (2) is transversely fixedly mounted at the top of the base (1), a supporting lifting mechanism (3) is fixedly mounted on the front surface of the supporting box body (2), the supporting lifting mechanism (3) comprises a first electric telescopic rod (4) fixedly supported and connected with the supporting box body (2), a supporting funnel (5) used for placing a workpiece is fixedly mounted at the telescopic end of the first electric telescopic rod (4), side wall supporting baffles (6) are fixedly mounted on two sides of the top of the supporting funnel (5), a pressure sensor (7) is fixedly mounted on the surface of each side wall supporting baffle (6), a sand shooting head (8) is fixedly mounted at the top end of the pressure sensor (7), and an electromagnetic valve (9) is fixedly mounted at the top end of the sand shooting head (8), the core shooting mechanism (10) is fixedly installed at the bottom end of the pressure sensor (7), the core shooting mechanism (10) comprises a casing (11) which is fixedly covered with the core shooting mechanism (10), a core shooting pressure cylinder (12) is fixedly installed inside the casing (11), the output end of the core shooting pressure cylinder (12) is communicated with the sand blasting head (8), and one end of the sand blasting head (8) is electrically connected with the pressure sensor (7).

2. The vertical lift mechanism of a blasting machine according to claim 1, wherein: the top fixed mounting of casing (11) has suction cylinder (13), the air inlet end fixed mounting pipe of suction cylinder (13), the one end of pipe and the feed liquor port intercommunication of shooting core pressure cylinder (12), the lateral wall imbibition mouth department of suction cylinder (13) still fixed mounting has imbibition hose (14), the sealed intercommunication of one end of imbibition hose (14) is equipped with the storage box.

3. The vertical lift mechanism of a blasting machine according to claim 2, wherein: the utility model discloses a support box, including the top fixed mounting of supporting box body (2) have vertical lift mechanism (15), vertical lift mechanism (15) include with supporting box body (2) top mid-mounting fixed base (16), the equal vertical fixed mounting in four edges at top of base (16) has slide pipe (17), the surface cover of slide pipe (17) is equipped with the sliding sleeve, the top fixed mounting of sliding sleeve installs supporting roof (18), the top fixed mounting of supporting roof (18) has second electric hydraulic cylinder (19), the flexible end of electric hydraulic cylinder (19) and the back fixed connection of supporting roof (18).

4. The vertical lift mechanism of a blasting machine according to claim 1, wherein: the inside fixed mounting of supporting box (2) has the mixing agitator tank that is used for mixing the psammitolite, the inside of mixing agitator tank is equipped with the agitator, the outside of supporting box (2) is passed and the coupling joint transmission that sets up with the outside to the one end of agitator is connected, the outside of coupling joint is fixed mounting still has the motor, the output of motor is connected with the one end transmission of coupling joint.

5. The vertical lift mechanism of a sander according to claim 3, wherein: the utility model discloses a motor casing, including casing (11), front fixed mounting of casing (11) has module drive case (20), the inside fixed mounting of module drive case (20) has PCB board (21), the surface of PCB board (21) is provided with the soldering circuit, the top surface of PCB board (21) all is soldered there is singlechip (22), pressure sensor (7) and singlechip (22) electric connection, the outside fixed mounting of casing (11) has the PLC controller, PCB board (21) and PLC controller electric connection, first electric telescopic handle (4), take out hydraulic cylinder (13), second electric hydraulic cylinder (19) and motor all with PLC controller electric connection, PLC controller and external power supply electric connection.

6. The vertical lift mechanism of a blasting machine according to claim 4, wherein: the speed of the stirrer can be automatically controlled and adjusted according to the pressurizing amount of the sand-blasting body adjusted by a user, and the specific steps comprise,

step A1: obtaining a relational expression of the real-time residual mixed sand core amount S (t) in the storage box body and the pressurizing amount J (t) of the sand injection body adjusted by a user by using a formula (1)

S (t) represents the amount of the residual mixed sand cores in the storage box at the moment t; j (t) represents the pressurizing amount of the sand body sprayed by the user at the time t; k represents a pressure coefficient ratio (value: 0.8) of the shot body;

step A2: the derivation is carried out on J (t) and S (t) in the formula (1)

step A3: obtaining the real-time reduction amount C (t) of the mixed sand core in the material storage box by using a formula (2)

Wherein C (t) represents the decrement of the mixed sand core in the storage box at the moment t; j (t) represents the pressurizing amount of the sand body sprayed by the user at the time t;

step A4: substituting the amount of the residual mixed sand core in the optimal storage box body obtained in the step A2 and the reduced amount of the mixed sand core in the storage box body obtained in the formula (2) into the formula (3) to obtain the real-time stirring speed V (t) of the stirrer

Wherein V (t) represents the stirring speed of the stirrer at the moment t; w represents the dose delivered to the inside of the hopper tank per unit time after the stirrer successfully stirs.

Technical Field

The invention belongs to the technical field of sand shooting machines, and particularly relates to a vertical lifting mechanism of a sand shooting machine.

Background

The injection and compression molding machine is a molding machine that uses compressed air to uniformly inject molding sand into a flask for pre-compacting, and then applies pressure to compact the molding sand. The common injection molding machine has a vertical parting flaskless injection molding machine and a horizontal parting flaskless injection molding machine. The vertical parting flaskless shooting and pressing molding machine does not need a sand box for molding, molding sand is directly shot into a molding chamber with a template, the manufactured sand mould has high dimensional precision, cavities are arranged on two sides of the sand box, the production efficiency is high, the core setting is difficult, and the requirement on the quality of the molding sand is strict. The horizontal parting and stripping injection molding machine utilizes the sand box to mold, and the sand box is closed and stripped after being manufactured, so that the core setting is convenient, and the production efficiency is high.

The vertical lifting device of the conventional sand blasting machine cannot realize convenient ascending and descending of the sand blasting head, is inconvenient for manual operation in use, and is inconvenient for automatic adjustment, and the traditional vertical lifting device of the sand blasting machine is huge and cannot improve the efficiency of the lifting process in the lifting process.

Disclosure of Invention

The invention aims to provide a vertical lifting mechanism of a sand shooting machine, and aims to solve the problems that the conventional vertical lifting device of the sand shooting machine in the prior art cannot conveniently and quickly lift and lower a sand blasting head, is inconvenient to operate manually during use and is inconvenient to automatically adjust.

In order to achieve the purpose, the invention provides the following technical scheme: the device comprises a square base, wherein a supporting box body is transversely and fixedly installed at the top of the base, a supporting and lifting mechanism is fixedly installed on the front surface of the supporting box body, the supporting and lifting mechanism comprises a first electric telescopic rod connected with a fixed support of the supporting box body, a supporting funnel used for placing a workpiece is fixedly installed at the telescopic end of the first electric telescopic rod, side wall supporting baffles are fixedly installed on two sides of the top of the supporting funnel, a pressure sensor is fixedly installed on the surface of each side wall supporting baffle, a sand blasting head is fixedly installed at the top end of the pressure sensor, an electromagnetic valve is fixedly installed at the top end of the sand blasting head, a core shooting mechanism is fixedly installed at the bottom end of the pressure sensor and comprises a casing which is fixedly connected with the core shooting mechanism in a covering manner, a core shooting pressure cylinder is fixedly installed inside the casing, and the output end of the core shooting pressure cylinder, and one end of the sand blasting head is electrically connected with the pressure sensor.

In order to facilitate a user to spray sand on the surface of the supporting funnel, as a preferable mode of the invention, a pumping hydraulic cylinder is fixedly installed at the top end of the casing, a guide pipe is fixedly installed at the air inlet end of the pumping hydraulic cylinder, one end of the guide pipe is communicated with an air inlet port of the core shooting hydraulic cylinder, a liquid suction hose is further fixedly installed at a liquid suction port of the side wall of the pumping hydraulic cylinder, and a storage box body is arranged at one end of the liquid suction hose in a sealing and communicating mode.

In order to support and lift a supporting top plate arranged at the end head, as a preferable mode of the invention, a vertical lifting mechanism is fixedly installed in the middle of the top end of the supporting box body, the vertical lifting mechanism comprises a base which is fixedly supported with the middle of the top end of the supporting box body, sliding pipes are vertically and fixedly installed at four corners of the top of the base, a sliding sleeve is sleeved on the surface of each sliding pipe, the top end of the sliding sleeve is fixedly supported and installed with the supporting top plate, the top of the supporting top plate is fixedly installed with a second electric hydraulic cylinder, and the telescopic end of each electric hydraulic cylinder is fixedly connected with the back of the supporting top plate.

In order to facilitate the stirring processing of the sand core for injection, as a preferred aspect of the present invention, a mixing and stirring tank for mixing the sand core is fixedly installed inside the supporting box, a stirrer is installed inside the mixing and stirring tank, one end of the stirrer penetrates through the outside of the supporting box and is in transmission connection with a coupling installed outside, a motor is further fixedly installed outside the coupling, and an output end of the motor is in transmission connection with one end of the coupling.

In order to facilitate the power-on control, as a preferable option of the invention, a module driving box is fixedly installed on the front side of the casing, a PCB board is fixedly installed inside the module driving box, a soldering circuit is arranged on the surface of the PCB board, a single chip microcomputer is soldered on the top surface of the PCB board, the pressure sensor is electrically connected with the single chip microcomputer, a PLC controller is fixedly installed on the outer side of the casing, the PCB board is electrically connected with the PLC controller, the first electric telescopic rod, the hydraulic pumping cylinder, the second electric hydraulic cylinder and the motor are electrically connected with the PLC controller, and the PLC controller is electrically connected with an external power supply.

In one embodiment, the speed of the stirrer can be automatically controlled and adjusted according to the pressurizing amount of the sand-blasting body adjusted by a user, and the specific steps comprise,

step A1: obtaining a relational expression of the real-time residual mixed sand core amount S (t) in the storage box body and the pressurizing amount J (t) of the sand injection body adjusted by a user by using a formula (1)

S (t) represents the amount of the residual mixed sand cores in the storage box at the moment t; j (t) represents the pressurizing amount of the sand body sprayed by the user at the time t; k represents a pressure coefficient ratio (value: 0.8) of the shot body;

step A2: the derivation is carried out on J (t) and S (t) in the formula (1)

Order toReplacing all the obtained S (t) values into the formula (1), and marking the value of S (t) corresponding to the minimum value of J (t) obtained as S, wherein the value of S represents the residual mixed sand core amount in the optimal storage box under the condition that the pressurizing amount of the sand body sprayed by a user is minimum;

step A3: obtaining the real-time reduction amount C (t) of the mixed sand core in the material storage box by using a formula (2)

Wherein C (t) represents the decrement of the mixed sand core in the storage box at the moment t; j (t) represents the pressurizing amount of the sand body sprayed by the user at the time t;

step A4: substituting the amount of the residual mixed sand core in the optimal storage box body obtained in the step A2 and the reduced amount of the mixed sand core in the storage box body obtained in the formula (2) into the formula (3) to obtain the real-time stirring speed V (t) of the stirrer

Wherein V (t) represents the stirring speed of the stirrer at the moment t; w represents the dosage of the materials which are sent to the interior of the material storage box in unit time after the stirrer successfully stirs;

the beneficial effects of the above technical scheme are: obtaining a relational expression of the real-time residual mixed sand core amount S (t) in the storage box and the pressurizing amount J (t) of the sand jetting body adjusted by the user by using a formula (1) in the step A1, aiming at fitting the relation between the two, and combining the step A2 to achieve the minimum pressurizing amount of the sand jetting body of the user, compared with the traditional non-calculation mode, the method and the step reduce the physical strength of the user, and save the power consumption given by pressurizing; obtaining the real-time reduction amount of the mixed sand cores inside the storage box body by using the formula (2) in the step A3, so that the real-time reduction amount of the mixed sand cores inside the storage box body can be known subsequently when the stirrer is controlled, and the mixed sand cores inside the storage box body are supplemented in time to reach the optimal amount of the residual mixed sand cores inside the storage box body; and finally, obtaining the real-time stirring speed of the stirrer by using a formula (3) in the step A4, wherein the purpose is to provide a value which can be adjusted and converted in real time for the singlechip (22), so that the control and calculation are convenient to compare with the traditional method of maintaining a stirring speed without calculation.

Compared with the prior art, the invention has the beneficial effects that:

1) the mixed sand core stored in the storage box body is conveniently extracted by the aid of the extraction hydraulic cylinder and the imbibition hose, extracted sand core raw materials are conveniently pressurized and led out by the aid of the core shooting hydraulic cylinder, the sand core is finally led into the sand blasting head by the aid of the imbibition hose in the core extraction process, and then the sand core is sprayed on the surface of the supporting funnel by a user under the action of pressurization and sand blasting of the sand blasting head, so that the user can conveniently and automatically adjust the sand core;

2) in daily use, the user can lift the supporting top plate arranged at the end position up and down by means of the vertical lifting mechanism, the supporting top plate arranged at the end position can be adjusted under the driving action of the sliding sleeve and the second electric hydraulic cylinder in the moving process, and the supporting top plate arranged at the end position can be supported and lifted by means of the second electric hydraulic cylinder arranged by the sliding sleeve in the daily use process.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

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

FIG. 2 is a schematic side view of the present invention;

FIG. 3 is a schematic top view of the present invention;

FIG. 4 is a schematic view of the internal structure of the atomization box of the present invention;

FIG. 5 is a schematic diagram of a PCB structure according to the present invention;

fig. 6 is a circuit diagram of the single chip microcomputer of the invention.

In the figure: 1. a base; 2. supporting the box body; 3. a supporting and lifting mechanism; 4. a first electric telescopic rod; 5. a support funnel; 6. a sidewall support baffle; 7. a pressure sensor; 8. a sand blasting head; 9. an electromagnetic valve; 10. a core shooting mechanism; 11. a housing; 12. a core shooting pressure cylinder; 13. pumping the hydraulic cylinder; 14. a liquid suction hose; 15. a vertical lifting mechanism; 16. a base; 17. a slide pipe; 18. supporting a top plate; 19. an electric hydraulic cylinder; 20. a module drive box; 21. a PCB board; 22. and a single chip microcomputer.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.