阅读说明：本技术 一种射砂机用可调式射砂筒 (Adjustable sand shooting barrel for 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：本发明公开了一种射砂机用可调式射砂筒,包括底座和筒体,在底座的上端设置有调节结构,气缸设置在底座的上端,连接杆设置在气缸的上端,卡环与筒体通过安装孔固定安装,且在卡环的上表面设置有耐磨层,提高了卡环的耐磨性,提高了使用寿命,通过利用控制面板,使得气缸进行上下运动,同时伸缩连杆进行伸长与缩短,能够带动卡环与筒体进行上下角度的调节,自动化程度高,提高了筒体的使用范围,利用风口能够将型砂向上出砂口和下出砂口方向吹动,在上出砂口和下出砂口均设置有电磁阀和压力传感器,当压力传感器感受到压力时,能将压力信号转化为电信号,通过控制面板使得电磁阀能够打开,方便使型砂能够从上出砂口排出,操作简单。(The invention discloses an adjustable sand shooting barrel for a sand shooting machine, which comprises a base and a barrel body, wherein an adjusting structure is arranged at the upper end of the base, a cylinder is arranged at the upper end of the base, a connecting rod is arranged at the upper end of the cylinder, a clamping ring and the barrel body are fixedly installed through an installation hole, a wear-resistant layer is arranged on the upper surface of the clamping ring, the wear resistance of the clamping ring is improved, the service life of the barrel is prolonged, the cylinder can move up and down by utilizing a control panel, meanwhile, a telescopic connecting rod can extend and shorten to drive the clamping ring and the barrel body to adjust the up and down angle, the automation degree is high, the use range of the barrel body is improved, molding sand can be blown in the directions of an upper sand outlet and a lower sand outlet by utilizing an air port, electromagnetic valves and pressure sensors are arranged at the upper sand outlet and the lower sand outlet, when the pressure sensors, make the solenoid valve can open through control panel, conveniently make the molding sand can follow sand outlet and discharge easy operation.)

1. The utility model provides a penetrate sand section of thick bamboo with adjustable penetrate sand machine, includes base (1) and barrel (2), and barrel (2) set up the upper end at base (1), its characterized in that: the base (1) comprises a blowing structure (11), a telescopic connecting rod (12), an adjusting structure (13) and a control panel (14), wherein the blowing structure (11) is arranged at the upper end of the base (1), the telescopic connecting rod (12) is arranged at one side of the blowing structure (11), the adjusting structure (13) is fixedly arranged at one side of the telescopic connecting rod (12), and the control panel (14) is arranged at the upper end of the base (1);

barrel (2) are including observation window (21), funnel (22), go up sand outlet (23), sand outlet (24) down, puigging (25), reinforcing plate (26) and deflector (27), observation window (21) set up the surface at barrel (2), funnel (22) set up the upper end at barrel (2), go up sand outlet (23) and set up the one side in barrel (2), sand outlet (24) set up the lower extreme at last sand outlet (23) down, puigging (25) set up the inner wall at barrel (2), reinforcing plate (26) set up the inside at puigging (25), deflector (27) fixed mounting is in the inside of barrel (2).

2. The adjustable sand shooting barrel for the sand shooting machine according to claim 1, characterized in that: the air blowing structure (11) comprises a fan (111), an air inlet pipe (112), a connecting piece (113), an air guide plate (114) and an air opening (115), wherein the fan (111) is arranged at the upper end of the base (1), the air inlet pipe (112) is arranged on one side of the fan (111), the other side of the air inlet pipe (112) is connected with the connecting piece (113), the air guide plate (114) is arranged on one side of the connecting piece (113), the air guide plate (114) is arranged inside the barrel body (2), and the air opening (115) is arranged on one side of the air guide plate (114).

3. The adjustable sand shooting barrel for the sand shooting machine according to claim 1, characterized in that: the adjusting structure (13) comprises an air cylinder (131), a connecting rod (132) and a clamping ring (133), the air cylinder (131) is arranged at the upper end of the base (1), the connecting rod (132) is arranged at the upper end of the air cylinder (131), and the clamping ring (133) is arranged at the upper end of the connecting rod (132).

4. The adjustable sand shooting barrel for the sand shooting machine according to claim 3, wherein: the clamping ring (133) comprises a wear-resistant layer (1331) and a mounting hole (1332), the wear-resistant layer (1331) is arranged on the upper surface of the clamping ring (133), and the clamping ring (133) and the cylinder body (2) are fixedly mounted through the mounting hole (1332).

5. The adjustable sand shooting barrel for the sand shooting machine according to claim 1, characterized in that: funnel (22) are including protection shield (221), boss (222) and fixing bolt (223), and protection shield (221) set up the inner wall at funnel (22), and boss (222) fixed mounting passes through fixing bolt (223) fixed mounting at the surface of funnel (22) with barrel (2) at boss (222).

6. The adjustable sand shooting barrel for the sand shooting machine according to claim 1, characterized in that: go up sand outlet (23) and include solenoid valve (231) and pressure sensor (232), solenoid valve (231) set up the surface at last sand outlet (23), and pressure sensor (232) set up the inner wall at last sand outlet (23), and solenoid valve (231) and pressure sensor (232) all link to each other with control panel (14) electrical property, and solenoid valve (231) are a ZCW solenoid valve, and pressure sensor (232) are an MPM270 type pressure sensor.

7. The adjustable sand shooting barrel for the sand shooting machine according to claim 1, characterized in that: the fan (111) can control the blown air by using the control panel (14) so as to keep the sand output of the upper sand outlet (23) consistent with that of the lower sand outlet (24). The method comprises the specific steps of preparing a composite material,

step A1: the transmission value of the pressure sensor (232) is converted into a pressure value F by using a formula (1) in a CPU (Central processing Unit) of a control panel (14)_i(t₀)

Wherein F_i(t₀) Is represented at 0-t₀The pressure value converted from the transmission value of the pressure sensor (232) at the ith sand outlet in time; i represents an ith sand outlet (an upper sand outlet (23) when i is 1, and a lower sand outlet (24) when i is 2); c (t)₀) Is represented at 0-t₀A transmission value of a pressure sensor (232) at an ith sand outlet in time; t is t₀Represents t₀Time of day;

step A2: substituting the pressure value of the upper sand outlet (23) into the formula (2) to obtain the air output D of the fan (111) corresponding to the pressure value increment of the upper sand outlet (23)₁

Wherein D₁The air output of the fan (111) corresponding to the pressure value increment of the upper sand outlet (23) in unit time is represented; Δ t represents Δ t times (unit time); g represents the gravity acceleration (the value is 9.8m/s 2); d represents the horizontal length of the cylinder (2); k represents the velocity ratio of the molding sand at the sand outlet, which is influenced by the air output of the fan (111) and corresponds to the increase of the pressure value of the upper sand outlet (23) in unit time; q represents the damping ratio of the air output of the fan (111) corresponding to the pressure value increment of the upper sand outlet (23) in unit time;

step A3: substituting the pressure value of the lower sand outlet (24) into the formula (3) to obtain the air output of the fan (111) corresponding to the pressure value increment of the lower sand outlet (24)

Wherein D₂The air output of the fan (111) corresponding to the pressure value increment of the lower sand outlet (24) in unit time is represented;

step A4: for the relational expression pair F in the formula (2) and the formula (3)_i(t₀) Taking the inverse function to obtain the inverse function D₁ ^-1,D₂ ^-1Let D₁ ^-1＝D₂ ^-1Find D₁＝D₂And D, controlling the fan (111) by utilizing the CPU in the control panel (14) so that the air output is kept at the value D at any time.

Technical Field

The invention relates to the technical field of sand shooting machine equipment, in particular to an adjustable sand shooting barrel for a sand shooting machine.

Background

The precoated sand core shooter is a machine which takes precoated sand as a raw material and utilizes the hot box principle to manufacture a precoated sand mold, the raw material for manufacturing the precoated sand core of the core shooter is phenolic resin precoated sand, and the core shooter is seen by a plurality of casting enterprises in recent years.

However, when the sand shooting cylinder is used to shoot the molding sand, since the position of the sand shooting cylinder is fixed, the sand shooting can be performed only in the same direction, the angle of the sand shooting cylinder cannot be adjusted, the application range is small, large noise is generated during the sand shooting, and the using effect is poor.

Aiming at the problems, the invention provides an adjustable sand shooting barrel for a sand shooting machine.

Disclosure of Invention

The invention aims to provide an adjustable sand shooting barrel for a sand shooting machine, which has the advantages of capability of vertically adjusting a barrel body, simple operation, wide application range, capability of reducing noise and good use effect, and solves the problems in the background art.

In order to achieve the purpose, the invention provides the following technical scheme: an adjustable sand shooting barrel for a sand shooting machine comprises a base and a barrel body, wherein the barrel body is arranged at the upper end of the base, the base comprises an air blowing structure, a telescopic connecting rod, an adjusting structure and a control panel, the air blowing structure is arranged at the upper end of the base, the telescopic connecting rod is arranged at one side of the air blowing structure, the adjusting structure is fixedly arranged at one side of the telescopic connecting rod, and the control panel is arranged at the upper end of the base;

the barrel includes observation window, funnel, goes up sand outlet, puigging, reinforcing plate and deflector down, and the observation window sets up on the surface of barrel, and the funnel setting is in the upper end of barrel, goes up sand outlet setting in one side of barrel, and lower sand outlet sets up the lower extreme at last sand outlet, and the puigging sets up the inner wall at the barrel, and the reinforcing plate setting is in the inside of puigging, deflector fixed mounting in the inside of barrel.

Preferably, the blowing structure comprises a fan, an air inlet pipe, a connecting piece, an air deflector and an air port, the fan is arranged at the upper end of the base, the air inlet pipe is arranged at one side of the fan, the other side of the air inlet pipe is connected with the connecting piece, the air deflector is arranged at one side of the connecting piece, the air deflector is arranged in the barrel, and the air port is arranged at one side of the air deflector.

Preferably, the adjusting structure comprises an air cylinder, a connecting rod and a clamping ring, the air cylinder is arranged at the upper end of the base, the connecting rod is arranged at the upper end of the air cylinder, and the clamping ring is arranged at the upper end of the connecting rod.

Preferably, the snap ring comprises a wear-resistant layer and a mounting hole, the wear-resistant layer is arranged on the upper surface of the snap ring, and the snap ring and the barrel are fixedly mounted through the mounting hole.

Preferably, the funnel includes protection shield, boss and fixing bolt, and the protection shield setting is at the inner wall of funnel, and boss fixed mounting passes through fixing bolt fixed mounting with the barrel at the surface of funnel, boss.

Preferably, go up the sand outlet and include solenoid valve and pressure sensor, the solenoid valve sets up the surface at last sand outlet, and pressure sensor sets up the inner wall at last sand outlet, and solenoid valve and pressure sensor all link to each other with control panel electrical property, and the solenoid valve is a ZCW solenoid valve, and pressure sensor is an MPM270 type pressure sensor.

Preferably, the fan (111) controls the blown air by using the control panel (14) so as to keep the sand output of the upper sand outlet (23) consistent with that of the lower sand outlet (24). The method comprises the specific steps of preparing a composite material,

step A1: the transmission value of the pressure sensor (232) is converted into a pressure value F by using a formula (1) in a CPU (Central processing Unit) of a control panel (14)_i(t₀)

Wherein F_i(t₀) Is represented at 0-t₀The pressure value converted from the transmission value of the pressure sensor (232) at the ith sand outlet in time; i represents an ith sand outlet (an upper sand outlet (23) when i is 1, and a lower sand outlet (24) when i is 2); c (t)₀) Is represented at 0-t₀A transmission value of a pressure sensor (232) at an ith sand outlet in time; t is t₀Represents t₀Time of day;

step A2: the pressure value of the upper sand outlet (23) is substituted into the formula (2) to obtain the upper sand outletThe air output D of the fan (111) corresponding to the pressure value increment of the sand outlet (23)₁

Wherein D₁The air output of the fan (111) corresponding to the pressure value increment of the upper sand outlet (23) in unit time is represented; Δ t represents Δ t times (unit time); g represents the gravity acceleration (the value is 9.8m/s 2); d represents the horizontal length of the cylinder (2); k represents the velocity ratio of the molding sand at the sand outlet, which is influenced by the air output of the fan (111) and corresponds to the increase of the pressure value of the upper sand outlet (23) in unit time; q represents the damping ratio of the air output of the fan (111) corresponding to the pressure value increment of the upper sand outlet (23) in unit time;

step A3: substituting the pressure value of the lower sand outlet (24) into the formula (3) to obtain the air output of the fan (111) corresponding to the pressure value increment of the lower sand outlet (24)

Wherein D₂The air output of the fan (111) corresponding to the pressure value increment of the lower sand outlet (24) in unit time is represented;

step A4: for the relational expression pair F in the formula (2) and the formula (3)_i(t₀) Taking the inverse function to obtain the inverse function D₁ ^-1,D₂ ^-1Let D₁ ^-1＝D₂ ^-1Find D₁＝D₂And D, controlling the fan (111) by utilizing the CPU in the control panel (14) so that the air output is kept at the value D at any time.

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

1. according to the adjustable sand shooting barrel for the sand shooting machine, the adjusting structure is arranged at the upper end of the base, the air cylinder is arranged at the upper end of the base, the connecting rod is arranged at the upper end of the air cylinder, the clamping ring and the barrel body are fixedly installed through the installing hole, the wear-resisting layer is arranged on the upper surface of the clamping ring, the wear resistance of the clamping ring is improved, the service life is prolonged, the air cylinder can move up and down by utilizing the control panel, the telescopic connecting rod is extended and shortened at the same time, the clamping ring and the barrel body can be driven to adjust the up-down angle, the automation degree is high, and the using range of the barrel body is.

2. According to the adjustable sand shooting barrel for the sand shooting machine, the air blowing structure is arranged at the upper end of the base, the fan is connected with the connecting piece through the air inlet pipe, the air port is formed in the barrel, an operator can discharge air from the air port by using the control panel and the fan, when molding sand falls into the barrel from the upper end of the funnel, the reinforcing plate is arranged in the barrel, the barrel can be protected, and the service life of the barrel is prolonged.

3. According to the adjustable sand shooting barrel for the sand shooting machine, molding sand can be blown in the directions of the upper sand outlet and the lower sand outlet by utilizing the air port, the electromagnetic valve and the pressure sensor are arranged on the upper sand outlet and the lower sand outlet, when the pressure sensor senses pressure, the pressure signal can be converted into an electric signal, when the preset standard value is reached, the electromagnetic valve can be opened through the control panel, the molding sand can be conveniently discharged from the upper sand outlet, the operation is simple, the guide plate is arranged on one side of the upper sand outlet, the molding sand can be conveniently shot out of the barrel body from the upper sand outlet and the lower sand outlet, and the working efficiency is improved.

4. According to the adjustable sand shooting barrel for the sand shooting machine, the sound insulation layer is arranged on the inner wall of the barrel body, noise generated during sand shooting can be reduced, the sound insulation effect is good, the protection plate is arranged on the inner wall of the funnel, abrasion of molding sand to the funnel can be reduced, and the reinforcing block is arranged on the outer surface of the funnel, so that the funnel is prevented from deforming during use.

Drawings

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

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

FIG. 3 is a schematic view of a snap ring structure according to the present invention;

FIG. 4 is an enlarged view taken at A of FIG. 2 in accordance with the present invention;

fig. 5 is a block diagram of the system of the present invention.

In the figure: 1. a base; 11. a blower structure; 111. a fan; 112. an air inlet pipe; 113. a connecting member; 114. an air deflector; 115. a tuyere; 12. a telescopic connecting rod; 13. an adjustment structure; 131. a cylinder; 132. a connecting rod; 133. a snap ring; 1331. a wear layer; 1332. mounting holes; 14. a control panel; 2. a barrel; 21. an observation window; 22. a funnel; 221. a protection plate; 222. a reinforcing block; 223. fixing the bolt; 23. an upper sand outlet; 231. an electromagnetic valve; 232. a pressure sensor; 24. a lower sand outlet; 25. a sound insulating layer; 26. a reinforcing plate; 27. a guide plate.

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.

Referring to fig. 1, an adjustable sand shooting barrel for a sand shooting machine comprises a base 1 and a barrel 2, wherein the barrel 2 is arranged at the upper end of the base 1, the base 1 comprises a blowing structure 11, a telescopic connecting rod 12, an adjusting structure 13 and a control panel 14, the blowing structure 11 is arranged at the upper end of the base 1, the telescopic connecting rod 12 is arranged at one side of the blowing structure 11, the adjusting structure 13 is fixedly arranged at one side of the telescopic connecting rod 12, and the control panel 14 is arranged at the upper end of the base 1; the barrel 2 comprises an observation window 21, a funnel 22, an upper sand outlet 23, a lower sand outlet 24, a sound insulation layer 25, a reinforcing plate 26 and a guide plate 27, the observation window 21 is arranged on the surface of the barrel 2, the funnel 22 is arranged on the upper end of the barrel 2, the upper sand outlet 23 is arranged on one side of the barrel 2, the lower sand outlet 24 is arranged on the lower end of the upper sand outlet 23, the sound insulation layer 25 is arranged on the inner wall of the barrel 2, noise generated during sand shooting can be reduced, the sound insulation effect is good, the reinforcing plate 26 is arranged inside the sound insulation layer 25, the air blowing structure 11 is arranged on the upper end of the base 1, the air blower 111 is connected with the connecting piece 113 through an air inlet pipe 112, the air outlet 115 is arranged inside the barrel 2, an operator can discharge air from the air outlet 115 by utilizing the control panel 14 and the air blower 111, when molding sand falls into the barrel 2, the reinforcing plate 26 is provided inside the cylinder 2 to protect the cylinder 2 and prolong the service life of the cylinder 2, and the guide plate 27 is fixedly installed inside the cylinder 2.

Referring to fig. 2 and 3, the blowing structure 11 includes a fan 111, an air inlet pipe 112, a connecting member 113, an air deflector 114 and an air opening 115, the fan 111 is disposed at the upper end of the base 1, the air inlet pipe 112 is disposed at one side of the fan 111, the other side of the air inlet pipe 112 is connected to the connecting member 113, the air deflector 114 is disposed at one side of the connecting member 113, the air deflector 114 is disposed inside the barrel 2, and the air opening 115 is disposed at one side of the air deflector 114; the adjusting structure 13 comprises an air cylinder 131, a connecting rod 132 and a snap ring 133, wherein the air cylinder 131 is arranged at the upper end of the base 1, the connecting rod 132 is arranged at the upper end of the air cylinder 131, and the snap ring 133 is arranged at the upper end of the connecting rod 132; the clamping ring 133 comprises a wear-resistant layer 1331 and a mounting hole 1332, the wear-resistant layer 1331 is arranged on the upper surface of the clamping ring 133, and the clamping ring 133 and the cylinder body 2 are fixedly mounted through the mounting hole 1332; be provided with regulation structure 13 in the upper end of base 1, cylinder 131 sets up the upper end at base 1, connecting rod 132 sets up the upper end at cylinder 131, snap ring 133 passes through mounting hole 1332 fixed mounting with barrel 2, and be provided with wearing layer 1331 at the upper surface of snap ring 133, the wearability of snap ring 133 has been improved, service life is prolonged, through utilizing control panel 14, make cylinder 131 carry out the up-and-down motion, flexible connecting rod 12 extends and shortens simultaneously, can drive snap ring 133 and barrel 2 and carry out the regulation of angle from top to bottom, the degree of automation is high, the application range of barrel 2 has been improved.

Referring to fig. 4 and 5, the funnel 22 includes a protection plate 221, a reinforcing block 222 and a fixing bolt 223, the protection plate 221 is disposed on an inner wall of the funnel 22, the reinforcing block 222 is fixedly mounted on an outer surface of the funnel 22, and the reinforcing block 222 and the cylinder 2 are fixedly mounted by the fixing bolt 223; a protective plate 221 is provided on the inner wall of the funnel 22 to reduce abrasion of the molding sand to the funnel 22, and a reinforcing block 222 is provided on the outer surface of the funnel 22 to prevent the funnel 22 from being deformed during use; the upper sand outlet 23 comprises an electromagnetic valve 231 and a pressure sensor 232, the electromagnetic valve 231 is arranged on the outer surface of the upper sand outlet 23, and the pressure sensor 232 is arranged on the inner wall of the upper sand outlet 23; solenoid valve 231 and pressure sensor 232 all link to each other with control panel 14 electrical property, and solenoid valve 231 is a ZCW solenoid valve, pressure sensor 232 is a MPM270 type pressure sensor, utilize wind gap 115 can blow the molding sand to go up sand outlet 23 and sand outlet 24 direction down, it all is provided with solenoid valve 231 and pressure sensor 232 to go up sand outlet 23 and sand outlet 24 down, when pressure sensor 232 experienced pressure, can turn into the signal of telecommunication with pressure signal, when reaching preset's standard value, make solenoid valve 231 open through control panel 14, conveniently make the molding sand can follow last sand outlet 23 and discharge, and easy operation, and be provided with deflector 27 in one side of last sand outlet 23, be favorable to the molding sand to jet out the barrel 2 from last sand outlet 23 and sand outlet 24 down, and the work efficiency is improved.

In summary, the following steps: the adjustable sand shooting barrel for the sand shooting machine is characterized in that an adjusting structure 13 is arranged at the upper end of a base 1, an air cylinder 131 is arranged at the upper end of the base 1, a connecting rod 132 is arranged at the upper end of the air cylinder 131, a clamping ring 133 and a barrel body 2 are fixedly installed through an installation hole 1332, a wear-resistant layer 1331 is arranged on the upper surface of the clamping ring 133, the wear resistance of the clamping ring 133 is improved, the service life of the clamping ring 133 is prolonged, the air cylinder 131 can move up and down by utilizing a control panel 14, meanwhile, an expansion connecting rod 12 extends and shortens, the clamping ring 133 and the barrel body 2 can be driven to adjust the vertical angle, the automation degree is high, the use range of the barrel body 2 is improved, an air blowing structure 11 is arranged at the upper end of the base 1, an air inlet 111 and a connecting piece 113 are connected through an air inlet pipe 112, an air outlet 115 is arranged inside the, when the molding sand falls into the cylinder 2 from the upper end of the funnel 22, the reinforcing plate 26 is arranged in the cylinder 2 to protect the cylinder 2, so that the service life of the cylinder 2 is prolonged, the molding sand can be blown towards the upper sand outlet 23 and the lower sand outlet 24 by the air port 115, the electromagnetic valve 231 and the pressure sensor 232 are arranged at the upper sand outlet 23 and the lower sand outlet 24 respectively, when the pressure sensor 232 senses the pressure, the pressure signal can be converted into an electric signal, when the preset standard value is reached, the electromagnetic valve 231 can be opened through the control panel 14, so that the molding sand can be discharged from the upper sand outlet 23 conveniently, the operation is simple, the guide plate 27 is arranged at one side of the upper sand outlet 23 to facilitate the molding sand to be ejected out of the cylinder 2 from the upper sand outlet 23 and the lower sand outlet 24, so that the working efficiency is improved, the sound insulation layer 25 is arranged on the inner wall of the cylinder 2 to reduce noise generated during the sand ejection, the sound insulation effect is good, the protective plate 221 is arranged on the inner wall of the funnel 22, the abrasion of the molding sand to the funnel 22 can be reduced, and the reinforcing block 222 is arranged on the outer surface of the funnel 22, so that the funnel 22 is prevented from being deformed in use.

In one embodiment, the fan (111) can control the blown air by using the control panel (14) so as to keep the sand output of the upper sand outlet (23) consistent with that of the lower sand outlet (24). The method comprises the specific steps of preparing a composite material,

step A1: the transmission value of the pressure sensor (232) is converted into a pressure value F by using a formula (1) in a CPU (Central processing Unit) of a control panel (14)_i(t₀)

Wherein F_i(t₀) Is represented at 0-t₀The pressure value converted from the transmission value of the pressure sensor (232) at the ith sand outlet in time; i represents an ith sand outlet (an upper sand outlet (23) when i is 1, and a lower sand outlet (24) when i is 2); c (t)₀) Is represented at 0-t₀A transmission value of a pressure sensor (232) at an ith sand outlet in time; t is t₀Represents t₀Time of day;

step A2: substituting the pressure value of the upper sand outlet (23) into the formula (2) to obtain the air output D of the fan (111) corresponding to the pressure value increment of the upper sand outlet (23)₁

Wherein D₁Indicates the increase of the pressure value of the upper sand outlet (23) in unit timeThe air output of the corresponding fan (111); Δ t represents Δ t times (unit time); g represents the gravity acceleration (the value is 9.8m/s 2); d represents the horizontal length of the cylinder (2); k represents the velocity ratio of the molding sand at the sand outlet, which is influenced by the air output of the fan (111) and corresponds to the increase of the pressure value of the upper sand outlet (23) in unit time; q represents the damping ratio of the air output of the fan (111) corresponding to the pressure value increment of the upper sand outlet (23) in unit time;

step A3: substituting the pressure value of the lower sand outlet (24) into the formula (3) to obtain the air output of the fan (111) corresponding to the pressure value increment of the lower sand outlet (24)

Wherein D₂The air output of the fan (111) corresponding to the pressure value increment of the lower sand outlet (24) in unit time is represented;

step A4: for the relational expression pair F in the formula (2) and the formula (3)_i(t₀) Taking the inverse function to obtain the inverse function D₁ ^-1,D₂ ^-1Let D₁ ^-1＝D₂ ^-1Find D₁＝D₂And D, controlling the fan (111) by utilizing the CPU in the control panel (14) so that the air output is kept at the value D at any time.

The beneficial effects of the above technical scheme are: converting the transmission value of the pressure sensor (232) into a weight value by using the formula (1) in the step A1, wherein the purpose is to convert the transmission value into a value which can be identified, calculated and stored by a CPU in a control panel (14) so as to facilitate subsequent control, and the transmission value in a time period is subjected to accumulation iterative regression value by using integration, so that the obtained result is more accurate and has smaller error compared with other formulas such as averaging in the same time period; obtaining the air output of the fan (111) corresponding to the pressure value increment of the upper sand outlet (23) by using the formula (2) in the step A2, observing the corresponding relation between the pressure value increment of the upper sand outlet (23) and the air output of the fan (111) by using the formula, facilitating the calculation of subsequent control, obtaining the optimal air output by combining the air output of the fan (111) corresponding to the pressure value increment of the lower sand outlet (24) obtained by the formula (3) and realizing an inverse function according to the step A4, wherein the air output can ensure that the sand output of the upper sand outlet (23) and the lower sand outlet (24) is kept consistent all the time, facilitating the unified management of the two air vents, and simultaneously blowing out the two sand outlets when the preset pressure thresholds are the same, compared with the traditional uncontrolled mechanism, adding a control formula and the steps can ensure that the automation degree of the whole mechanism is higher, the efficiency is higher.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.