阅读说明：本技术 一种全自动射砂机用废砂收集装置 (Waste sand collecting device for full-automatic 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：本发明公开了一种全自动射砂机用废砂收集装置,包括废料收集组件和射砂机本体,射砂机构固定安装在支撑柱的上端,安装架固定安装在支撑柱的上端,射砂机构在完成工作后,废料可直接落入废料收集组件中,磁块固定安装在第一腔室内壁的上端,可吸附废料中铁的物质,过滤筛网固定安装在第一腔室的内部,灰尘等细小物质附着在过滤筛网表面,废砂可直接落下,通过控制面板开启风机,使得风从吸风口中吸入过滤机构的内部,便于吸走第一腔室内部的灰尘,过滤网固定安装在固定环的上端,通孔设置在固定环的上表面,通过过滤网的阻挡,灰尘可吸附在过滤网上表面,废砂从通孔中掉落,吸进来的废砂可通过出砂管回到收集箱中保存,过滤效果好。(The invention discloses a waste sand collecting device for a full-automatic sand shooting machine, which comprises a waste collecting component and a sand shooting machine body, wherein a sand shooting mechanism is fixedly arranged at the upper end of a supporting column, a mounting frame is fixedly arranged at the upper end of the supporting column, after the sand shooting mechanism finishes work, waste materials can directly fall into the waste collecting component, a magnetic block is fixedly arranged at the upper end of the inner wall of a first cavity and can adsorb iron materials in the waste materials, a filter screen is fixedly arranged in the first cavity, fine materials such as dust and the like are attached to the surface of the filter screen, waste sand can directly fall down, a fan is started through a control panel, so that air is sucked into the filter mechanism from an air suction port to conveniently suck away the dust in the first cavity, the filter screen is fixedly arranged at the upper end of a fixing ring, through holes are formed in the upper surface of the fixing ring, and the dust can be, the waste sand drops from the through hole, and the sucked waste sand can be returned to the collecting box through the sand outlet pipe for storage, so that the filtering effect is good.)

1. The utility model provides a full-automatic sand shooting machine used waste sand collection device, includes garbage collection subassembly (1) and shooting machine body (2), garbage collection subassembly (1) fixed mounting is at the lower extreme of shooting machine body (2), its characterized in that: the waste collecting assembly (1) comprises a mounting frame (11), a first cavity (12), a second cavity (13), a collecting box (14) and a filtering mechanism (15), the mounting frame (11) is fixedly mounted at the upper end of the waste collecting assembly (1), the first cavity (12) is arranged inside the waste collecting assembly (1), the second cavity (13) is arranged inside the first cavity (12), the collecting box (14) is fixedly mounted at the lower end of the second cavity (13), and the filtering mechanism (15) is arranged at one end of the waste collecting assembly (1);

penetrate sand machine body (2) including support column (21), penetrate sand mechanism (22) and control panel (23), support column (21), penetrate sand mechanism (22) fixed mounting in the upper end of support column (21), mounting bracket (11) fixed mounting in the upper end of support column (21), control panel (23) fixed mounting is in the upper end of support column (21).

2. The waste sand collecting device for the full-automatic sand shooting machine according to claim 1, characterized in that: the first chamber (12) comprises a door body (121), magnetic blocks (122), a filtering screen (123) and an air suction opening (124), the door body (121) is hinged to the outer surface of the first chamber (12), the magnetic blocks (122) are fixedly mounted at the upper end of the inner wall of the first chamber (12), the filtering screen (123) is fixedly mounted inside the first chamber (12), and one end of the air suction opening (124) is arranged inside the first chamber (12).

3. The waste sand collecting device for the full-automatic sand shooting machine according to claim 1, characterized in that: the second chamber (13) corresponds in structure to the first chamber (12).

4. The waste sand collecting device for the full-automatic sand shooting machine according to claim 1, characterized in that: the collecting box (14) comprises a sand outlet (141) and a pressure sensor (142), the sand outlet (141) is arranged on the outer surface of the collecting box (14), and the pressure sensor (142) is fixedly arranged on the inner wall of the upper end of the collecting box (14) and electrically connected with the control panel (23).

5. The waste sand collecting device for the full-automatic sand shooting machine according to claim 1, characterized in that: filtering mechanism (15) includes fan (151), mounting panel (152), filter screen (153), go out sand pipe (154) and spout (155), fan (151) fixed mounting is in the upper end of filtering mechanism (15), mounting panel (152) fixed mounting is in the inside of filtering mechanism (15), the lower extreme at mounting panel (152) is installed to the one end of filter screen (153), the other end sets up the upper end at filtering mechanism (15) inner wall, the one end setting of going out sand pipe (154) is at the lower extreme of filtering mechanism (15), the other end is connected with the surface of collecting box (14), spout (155) set up the upper end at filtering mechanism (15) inner wall.

6. The waste sand collecting device for the full-automatic sand shooting machine according to claim 2, characterized in that: filter screen cloth (123) including installation piece (1231) and mounting (1232), installation piece (1231) fixed mounting is at the both ends of filtering screen cloth (123), and the cutting ferrule installs the one end at mounting (1232), and mounting (1232) pass through the upper end of bolt fixed mounting at first cavity (12) inner wall.

7. The waste sand collecting device for the full-automatic sand shooting machine according to claim 5, characterized in that: the filter screen (153) includes solid fixed ring (1531), through-hole (1532) and slider (1533), and filter screen (153) fixed mounting is in the upper end of solid fixed ring (1531), and through-hole (1532) set up the upper surface at solid fixed ring (1531), and slider (1533) fixed mounting is in the surface of solid fixed ring (1531), and with spout (155) phase-match.

8. The waste sand collecting device for the full-automatic sand shooting machine according to claim 5, characterized in that: the pressure sensor (142) is a spoke sensor with wireless control.

9. The waste sand collecting device for the full-automatic sand shooting machine according to claim 1, characterized in that: the waste sand can control the opening size of the air suction opening (124) in real time by using an automatic control method, so that the purity of the waste sand is ensured. The method comprises the specific steps of preparing a composite material,

step A1: in the control panel (23), the CPU converts the transmission value of the pressure sensor (142) into a pressure value F (t) by using the formula (1)₀)

Wherein F (t)₀) Is represented at 0-t₀A pressure value into which a transmission value of the pressure sensor (142) is converted in time; c (t)₀) Is represented at 0-t₀A transmission value of the pressure sensor (142) in time; t is t₀Represents t₀Time of day;

step A2: obtaining a relational expression of the variation of the pressure value in unit time and the purity of the waste sand in the collection box (14) by using the formula (2)

Wherein S (t)₀-Δt,t₀) Is shown at t₀-Δt,t₀The purity of the waste sand of a collecting box (14) in the waste sand collecting device for the full-automatic sand shooting machine in time; k is represented at t₀-Δt,t₀The screening ratio of the waste sand of the filtering screen (123) in the waste sand collecting device for the full-automatic sand shooter in time (the screening ratio of the mechanism is 85 percent, so the K value is 85 percent); n represents the number of chambers (N is 2 because there are two chambers, the first chamber (12) and the second chamber (13)), and Δ t represents Δ t times (in units of time);

step A3: let F (t)₀-Δt,t₀)＝F(t₀)-F(t₀Δ t) with S (t)₀-Δt,t₀) For F (t)₀-Δt,t₀) Is subjected to derivation to obtainOrder toObtain the corresponding F (t)₀-Δt,t₀) Will yield the corresponding F (t)₀-Δt,t₀) The value is substituted back into S (t) obtained in equation (2)₀-Δt,t₀) F (t) corresponding to maximum value₀-Δt,t₀) The value is the variation F of the pressure value in unit time with the highest purity of the waste sand;

step A4: substituting the change quantity of the pressure value in unit time with the highest purity of the waste sand obtained in the step A3 into a formula (3) to obtain a real-time opening angle beta (t) of the air suction opening (124)

Wherein beta (t) represents the opening angle of the air suction opening (124) at the moment t; f represents a change amount of the pressure value per unit time having the highest degree of purity of the waste sand obtained in step a 3; t represents time t;

and then, the CPU in the control panel (23) is used for controlling the opening of the suction opening (124) in real time according to the angle obtained by the formula (3) so as to achieve the highest purity of the collected waste sand.

Technical Field

The invention relates to the technical field of sand shooting machines, in particular to a waste sand collecting device for a full-automatic sand shooting machine.

Background

The core shooter has the working principle that the precoated sand is shot into a heated metal core box die by using compressed air, the precoated sand is quickly solidified in the core box die when heated, the die is opened and taken out after certain strength and thickness are achieved, a high-quality sand core with smooth surface and accurate size is formed so as to facilitate the pouring of molten iron after assembly, and a core or a shell manufactured by the core shooter has high accuracy and surface quality and high finished product smoothness.

The sand core casting of current sand shooting machine is accomplished the back at the psammitolite, need carry out the drawing of patterns and handle, returns to producing certain waste sand in the mould of drawing of patterns, can reuse after the waste sand is collected, but current waste sand is collected comparatively troublesome, and lies in that air contact process can produce substances such as certain dust, and is inconvenient to its filtration, detains and influences the psammitolite casting of next time in the mould, and the result of use is not good.

Aiming at the problems, the invention provides a waste sand collecting device for a full-automatic sand shooting machine.

Disclosure of Invention

The invention aims to provide a waste sand collecting device for a full-automatic sand shooting machine, which has the advantages of convenience in waste sand collection and good filtering effect, so that the problems that certain waste sand is generated in a demoulded mould in the background technology, the existing waste sand collection is troublesome, certain substances such as dust and the like are generated in the air contact process, the waste sand is not convenient to filter, the substances are retained in the mould to influence the next sand core casting, and the using effect is poor are solved.

In order to achieve the purpose, the invention provides the following technical scheme: a waste sand collecting device for a full-automatic sand shooting machine comprises a waste collecting component and a sand shooting machine body, wherein the waste collecting component is fixedly arranged at the lower end of the sand shooting machine body and comprises a mounting frame, a first cavity, a second cavity, a collecting box and a filtering mechanism;

penetrate sand machine body includes the support column, penetrates sand mechanism and control panel, the support column, penetrates sand mechanism fixed mounting in the upper end of support column, mounting bracket fixed mounting is in the upper end of support column, control panel fixed mounting is in the upper end of support column.

Preferably, first cavity includes a body, magnetic path, filter screen and inlet scoop, and the surface at first cavity is installed in the articulated of a body, and magnetic path fixed mounting is in the upper end of first cavity inner wall, and filter screen fixed mounting is in the inside of first cavity, and the one end setting of inlet scoop is in the inside of first cavity.

Preferably, the second chamber is identical in structure to the first chamber.

Preferably, the collecting box includes sand outlet and pressure sensor, and the sand outlet sets up the surface at the collecting box, and pressure sensor fixed mounting is at the upper end inner wall of collecting box, and with control panel electric connection.

Preferably, the filter mechanism includes fan, mounting panel, filter screen, sand outlet pipe and spout, and fan fixed mounting is in filter mechanism's upper end, and mounting panel fixed mounting is in filter mechanism's inside, and the lower extreme at the mounting panel is installed to the one end of filter screen, and the other end setting is in the upper end of filter mechanism inner wall, and sand outlet pipe's one end setting is at filter mechanism's lower extreme, and the other end and the surface connection of collecting box, the spout setting is in the upper end of filter mechanism inner wall.

Preferably, the filter screen comprises an installation block and a fixing piece, the installation block is fixedly installed at two ends of the filter screen, the clamping sleeve is installed at one end of the fixing piece, and the fixing piece is fixedly installed at the upper end of the inner wall of the first chamber through a bolt.

Preferably, the filter screen includes solid fixed ring, through-hole and slider, and filter screen fixed mounting is in solid fixed ring's upper end, and the through-hole setting is at solid fixed ring's upper surface, and slider fixed mounting is at solid fixed ring's surface, and with the spout phase-match.

Preferably, the pressure sensor is a spoke sensor with wireless control.

Preferably, the waste sand can control the opening size of the suction opening (124) in real time by using an automatic control method, so that the purity of the waste sand is ensured. The method comprises the specific steps of preparing a composite material,

step A1: in the control panel (23), the CPU converts the transmission value of the pressure sensor (142) into a pressure value F (t) by using the formula (1)₀)

Wherein F (t)₀) Is represented at 0-t₀A pressure value into which a transmission value of the pressure sensor (142) is converted in time; c (t)₀) Is represented at 0-t₀A transmission value of the pressure sensor (142) in time; t is t₀Represents t₀Time of day;

step A2: obtaining a relational expression of the variation of the pressure value in unit time and the purity of the waste sand in the collection box (14) by using the formula (2)

Wherein S (t)₀-Δt,t₀) Is shown at t₀-Δt,t₀The purity of the waste sand of a collecting box (14) in the waste sand collecting device for the full-automatic sand shooting machine in time; k is represented at t₀-Δt,t₀The screening ratio of the waste sand of the filtering screen (123) in the waste sand collecting device for the full-automatic sand shooter in time (the screening ratio of the mechanism is 85 percent, so the K value is 85 percent); n represents the number of chambers (N is 2 because there are two chambers, the first chamber (12) and the second chamber (13)), and Δ t represents Δ t times (in units of time);

step A3: let F (t)₀-Δt,t₀)＝F(t₀)-F(t₀Δ t) with S (t)₀-Δt,t₀) For F (t)₀-Δt,t₀) Is subjected to derivation to obtainOrder toObtain the corresponding F (t)₀-Δt,t₀) Will yield the corresponding F (t)₀-Δt,t₀) The value is substituted back into S (t) obtained in equation (2)₀-Δt,t₀) F (t) corresponding to maximum value₀-Δt,t₀) The value is the variation F of the pressure value in unit time with the highest purity of the waste sand;

step A4: substituting the change quantity of the pressure value in unit time with the highest purity of the waste sand obtained in the step A3 into a formula (3) to obtain a real-time opening angle beta (t) of the air suction opening (124)

Wherein beta (t) represents the opening angle of the air suction opening (124) at the moment t; f represents a change amount of the pressure value per unit time having the highest degree of purity of the waste sand obtained in step a 3; t represents time t;

and then, the CPU in the control panel (23) is used for controlling the opening of the suction opening (124) in real time according to the angle obtained by the formula (3) so as to achieve the highest purity of the collected waste sand.

The beneficial effects of the above technical scheme are: converting the transmission value of the pressure sensor (142) into a pressure 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 (Central processing Unit) so as to facilitate subsequent control, and the transmission value in a time period is accumulated and iteratively regressed by using integration to obtain a value, so that the obtained result is more accurate than other formulas such as averaging in the same time period, and the error is smaller; obtaining a relational expression of the change quantity of the pressure value in unit time and the purity of the waste sand of the collecting box (14) by using a formula (2) in the step A2, effectively avoiding factors such as instability of the pressure value and accumulation of the pressure value caused by the fact that a worker checks and replaces the collecting box 14 in time and the collecting box 14 accumulates continuously by using the change quantity of the pressure value in unit time as a parameter value, obtaining the change quantity of the pressure value in unit time with the highest purity of the waste sand according to the step A3, ensuring that the waste sand can be collected in the state of the highest purity of the waste sand all the time in the waste sand collecting process, and compared with other methods, the formula and the steps can constantly keep the state of the highest purity of the waste sand for collection so as to achieve the state of maximum benefit; and finally, obtaining the real-time opening angle of the air suction opening (124) by using the formula (3) in the step A4, substituting the change quantity of the pressure value in the unit time with the highest purity of the waste sand obtained in the step A3 into the real-time automatic collection in the state of the highest purity of the waste sand all the time in the collection process, so that the aim of automatic control is fulfilled, and compared with the automatic control formula added by other methods and the steps, the automatic collection method has the advantages that the automation degree of the whole mechanism is higher, and the efficiency is higher.

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

1. the invention provides a waste sand collecting device for a full-automatic sand shooting machine, which is characterized in that a sand shooting mechanism is fixedly arranged at the upper end of a supporting column, a mounting frame is fixedly arranged at the upper end of the supporting column, after the sand shooting mechanism finishes work, waste materials can directly fall into a waste material collecting assembly, a magnetic block is fixedly arranged at the upper end of the inner wall of a first cavity and can adsorb iron materials in the waste materials, a filter screen is fixedly arranged in the first cavity, fine materials such as dust and the like are attached to the surface of the filter screen, waste sand can directly fall, a second cavity is consistent with the first cavity in structure, and the waste sand is screened twice, so that the purity of the waste sand is conveniently ensured and the waste sand falls into a collecting box for storage.

2. According to the waste sand collecting device for the full-automatic sand shooting machine, one end of the air suction opening is arranged inside the first cavity, the fan is electrically connected with the control panel, the fan is started through the control panel, so that air is sucked into the filtering mechanism from the air suction opening, dust inside the first cavity and dust inside the second cavity are conveniently sucked away, the filter screen is fixedly arranged at the upper end of the fixing ring, the through hole is formed in the upper surface of the fixing ring, the dust can be adsorbed on the upper surface of the filter screen through the blocking of the filter screen, waste sand falls from the through hole, the sucked waste sand can return to the collecting box through the sand outlet pipe for storage, and the filtering effect is good.

3. The invention provides a waste sand collecting device for a full-automatic sand shooting machine, wherein a sand shooting mechanism is electrically connected with an external power supply, waste sand is generated after the sand shooting mechanism starts to work and falls into a collecting box, a pressure sensor is a spoke type sensor with wireless control, the weight of the waste sand in the collecting box can be sensed, the pressure sensor is electrically connected with a control panel, and when the weight reaches a standard preset value of the pressure sensor, the control panel is lightened by a display lamp, and a worker is reminded to look over and replace the collecting box in time in the front, so that the waste sand in the collecting box is prevented from expanding due to excessive sand.

4. According to the waste sand collecting device for the full-automatic sand shooting machine, the sliding block is fixedly arranged on the outer surface of the fixing ring and matched with the sliding groove, the sliding block slides into the sliding groove, so that the filter screen is convenient to mount and dismount, the mounting blocks are fixedly arranged at two ends of the filter screen, the clamping sleeve is arranged at one end of the fixing piece, the filter screen and the filter screen can be replaced through the door body, and the problem of poor filtering effect caused by dust accumulation is avoided.

Drawings

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

FIG. 2 is a cross-sectional view of the waste collection assembly of the present invention;

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

FIG. 4 is a schematic view of a filter screen configuration of the present invention;

FIG. 5 is an enlarged view taken at A in FIG. 3 according to the present invention;

fig. 6 is a block diagram of the present invention.

In the figure: 1. a waste collection assembly; 11. a mounting frame; 12. a first chamber; 121. a door body; 122. a magnetic block; 123. filtering the screen; 1231. mounting blocks; 1232. a fixing member; 124. an air suction opening; 13. a second chamber; 14. a collection box; 141. a sand outlet; 142. a pressure sensor; 15. a filtering mechanism; 151. a fan; 152. mounting a plate; 153. a filter screen; 1531. a fixing ring; 1532. a through hole; 1533. a slider; 154. a sand outlet pipe; 155. a chute; 2. a sand shooting machine body; 21. a support pillar; 22. a sand shooting mechanism; 23. a control panel.

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, a waste sand collecting device for a full-automatic sand shooting machine comprises a waste collecting component 1 and a sand shooting machine body 2, wherein the waste collecting component 1 is fixedly installed at the lower end of the sand shooting machine body 2, the waste collecting component 1 comprises an installation frame 11, a first cavity 12, a second cavity 13, a collecting box 14 and a filtering mechanism 15, the installation frame 11 is fixedly installed at the upper end of the waste collecting component 1, the first cavity 12 is arranged inside the waste collecting component 1, the second cavity 13 is arranged inside the first cavity 12, the collecting box 14 is fixedly installed at the lower end of the second cavity 13, and the filtering mechanism 15 is arranged at one end of the waste collecting component 1; penetrate sand machine body 2 includes support column 21, penetrates sand mechanism 22 and control panel 23, support column 21, penetrates sand mechanism 22 fixed mounting in the upper end of support column 21, and mounting bracket 11 fixed mounting is in the upper end of support column 21, penetrates sand mechanism 22 and is accomplishing the work back, and the waste material can directly fall into garbage collection subassembly 1, and control panel 23 fixed mounting is in the upper end of support column 21.

Referring to fig. 2 and 3, the first chamber 12 includes a door 121, a magnet 122, a filter screen 123 and an air inlet 124, the door 121 is hinged to the outer surface of the first chamber 12, the magnet 122 is fixedly mounted at the upper end of the inner wall of the first chamber 12, the filter screen 123 capable of absorbing iron in waste materials is fixedly mounted inside the first chamber 12, fine materials such as dust are attached to the surface of the filter screen 123, waste sand can directly fall down, one end of the air inlet 124 is disposed inside the first chamber 12, the second chamber 13 has a structure identical to that of the first chamber 12, waste sand is screened twice, so as to ensure the purity of the waste sand and falls into the collection box 14 for storage, the filter mechanism 15 includes a fan 151, a mounting plate 152, a filter screen 153, a sand outlet pipe 154 and a chute 155, the fan 151 is fixedly mounted at the upper end of the filter mechanism 15, the mounting plate 152 is fixedly mounted inside the filter mechanism 15, one end of the filter screen 153 is installed at the lower end of the installation plate 152, the other end is installed at the upper end of the inner wall of the filter mechanism 15, one end of the sand outlet pipe 154 is installed at the lower end of the filter mechanism 15, the other end is connected with the outer surface of the collection box 14, the chute 155 is installed at the upper end of the inner wall of the filter mechanism 15, the fan 151 is electrically connected with the control panel 23, the fan 151 is turned on through the control panel 23, so that air is sucked into the interior of the filter mechanism 15 from the air suction port 124 to suck away dust in the interior of the first chamber 12 and the second chamber 13, the sucked waste sand can return to the collection box 14 through the sand outlet pipe 154 for storage, the filtering effect is good, the collection box 14 comprises a sand outlet 141 and a pressure sensor 142, the sand outlet 141 is installed at the outer surface of the collection box 14, the pressure sensor 142 is fixedly installed at the inner wall of the, the sand shooting mechanism 22 is operated to generate waste sand, which falls into the collection box 14.

Referring to fig. 4, the filter screen 123 includes an installation block 1231 and a fixing member 1232, the installation block 1231 is fixedly installed at two ends of the filter screen 123, and the fastening sleeve is installed at one end of the fixing member 1232, the fixing member 1232 is fixedly installed at the upper end of the inner wall of the first chamber 12 through a bolt, and the filter screen 153 and the filter screen 123 can be replaced through the door 121, so as to prevent dust accumulation and poor filtering effect.

Referring to fig. 5, the filter screen 153 includes a fixing ring 1531, a through hole 1532 and a sliding block 1533, the filter screen 153 is fixedly installed at an upper end of the fixing ring 1531, the through hole 1532 is disposed on an upper surface of the fixing ring 1531, the sliding block 1533 is fixedly installed on an outer surface of the fixing ring 1531 and is matched with the sliding groove 155, the sliding block 1533 slides into the sliding groove 155, so that the filter screen 153 is conveniently installed and disassembled, the dust is adsorbed on the upper surface of the filter screen 153 by being blocked by the filter screen 153, and the waste sand falls from the through hole 1532.

Referring to fig. 6, the sand shooting mechanism 22 is electrically connected to an external power source, waste sand is generated after the sand shooting mechanism 22 starts to work and falls into the collection box 14, the pressure sensor 142 is a spoke type sensor with wireless control, which can sense the weight of the waste sand in the collection box 14, and the control panel 23 is electrically connected to the control panel 23, so that when the weight reaches a standard predetermined value of the pressure sensor 142, the control panel 23 lights up from a display lamp and reminds a worker to check and replace the collection box 14 in time, thereby preventing the waste sand in the collection box 14 from expanding due to excessive sand.

In summary, the following steps: the invention provides a waste sand collecting device for a full-automatic sand shooting machine, wherein a sand shooting mechanism 22 is fixedly arranged at the upper end of a supporting column 21, a mounting frame 11 is fixedly arranged at the upper end of the supporting column 21, after the sand shooting mechanism 22 finishes work, waste materials can directly fall into a waste material collecting assembly 1, a magnetic block 122 is fixedly arranged at the upper end of the inner wall of a first chamber 12 and can absorb iron materials in the waste materials, a filter screen 123 is fixedly arranged in the first chamber 12, fine materials such as dust and the like are attached to the surface of the filter screen 123, the waste sand can directly fall down, a second chamber 13 has the same structure with the first chamber 12, the waste sand is screened twice, the purity of the waste sand is convenient to ensure and falls into a collecting box 14 for storage, one end of an air suction opening 124 is arranged in the first chamber 12, a fan 151 is electrically connected with a control panel 23, the fan 151 is started through the control panel 23, so that air is sucked into the interior of the filter mechanism 15, the dust in the first chamber 12 and the second chamber 13 can be easily sucked away, the filter screen 153 is fixedly installed at the upper end of the fixing ring 1531, the through hole 1532 is arranged at the upper surface of the fixing ring 1531, the dust can be adsorbed on the upper surface of the filter screen 153 by the blocking of the filter screen 153, the waste sand falls from the through hole 1532, the sucked waste sand can return to the collecting box 14 through the sand outlet pipe 154 for storage, the filtering effect is good, the pressure sensor 142 is fixedly installed at the inner wall of the upper end of the collecting box 14 and is electrically connected with the control panel 23, the sand shooting mechanism 22 is electrically connected with an external power supply, the waste sand is generated after the sand shooting mechanism 22 starts working and falls into the collecting box 14, the pressure sensor 142 is a spoke type sensor with wireless control, the weight of the waste sand in the collecting box 14 can be sensed and is electrically connected with the control panel 23, when the weight reaches the standard preset value of the, control panel 23 lights from the tape light, and remind the staff to look over before and in time change collecting box 14, prevent that the useless sand from expanding because of too much in the collecting box 14, slider 1533 fixed mounting is at solid fixed ring 1531's surface, and with spout 155 phase-match, through with inside slider 1533 slips into spout 155, be convenient for to the installation and the dismantlement of filter screen 153, installation piece 1231 fixed mounting is at the both ends of filter screen 123, and the cutting ferrule is installed in the one end of mounting 1232, can be to the change of filter screen 153 and filter screen 123 through door body 121, prevent that the dust from piling up and leading to the filter effect not good.

In one embodiment, the waste sand can control the opening size of the suction opening (124) in real time by using an automatic control method, so that the purity of the waste sand is ensured. The method comprises the specific steps of preparing a composite material,

step A1: in the control panel (23), the CPU converts the transmission value of the pressure sensor (142) into a pressure value F (t) by using the formula (1)₀)

Wherein F (t)₀) Is represented at 0-t₀A pressure value into which a transmission value of the pressure sensor (142) is converted in time; c (t)₀) Is represented at 0-t₀A transmission value of the pressure sensor (142) in time; t is t₀Represents t₀Time of day;

step A2: obtaining a relational expression of the variation of the pressure value in unit time and the purity of the waste sand in the collection box (14) by using the formula (2)

Wherein S (t)₀-Δt,t₀) Is shown at t₀-Δt,t₀The purity of the waste sand of a collecting box (14) in the waste sand collecting device for the full-automatic sand shooting machine in time; k is represented at t₀-Δt,t₀The screening ratio of the waste sand of the filtering screen (123) in the waste sand collecting device for the full-automatic sand shooter in time (the screening ratio of the mechanism is 85 percent, so the K value is 85 percent); n represents the number of chambers (N is 2 because there are two chambers, the first chamber (12) and the second chamber (13)), and Δ t represents Δ t times (in units of time);

step A3: let F (t)₀-Δt,t₀)＝F(t₀)-F(t₀Δ t) with S (t)₀-Δt,t₀) For F (t)₀-Δt,t₀) Is subjected to derivation to obtainOrder toObtain the corresponding F (t)₀-Δt,t₀) Will yield the corresponding F (t)₀-Δt,t₀) The value is substituted back into S (t) obtained in equation (2)₀-Δt,t₀) F (t) corresponding to maximum value₀-Δt,t₀) The value is the variation F of the pressure value in unit time with the highest purity of the waste sand;

step A4: substituting the change quantity of the pressure value in unit time with the highest purity of the waste sand obtained in the step A3 into a formula (3) to obtain a real-time opening angle beta (t) of the air suction opening (124)

Wherein beta (t) represents the opening angle of the air suction opening (124) at the moment t; f represents a change amount of the pressure value per unit time having the highest degree of purity of the waste sand obtained in step a 3; t represents time t;

and then, the CPU in the control panel (23) is used for controlling the opening of the suction opening (124) in real time according to the angle obtained by the formula (3) so as to achieve the highest purity of the collected waste sand.

The beneficial effects of the above technical scheme are: converting the transmission value of the pressure sensor (142) into a pressure 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 (Central processing Unit) so as to facilitate subsequent control, and the transmission value in a time period is accumulated and iteratively regressed by using integration to obtain a value, so that the obtained result is more accurate than other formulas such as averaging in the same time period, and the error is smaller; obtaining a relational expression of the change quantity of the pressure value in unit time and the purity of the waste sand of the collecting box (14) by using a formula (2) in the step A2, effectively avoiding factors such as instability of the pressure value and accumulation of the pressure value caused by the fact that a worker checks and replaces the collecting box 14 in time and the collecting box 14 accumulates continuously by using the change quantity of the pressure value in unit time as a parameter value, obtaining the change quantity of the pressure value in unit time with the highest purity of the waste sand according to the step A3, ensuring that the waste sand can be collected in the state of the highest purity of the waste sand all the time in the waste sand collecting process, and compared with other methods, the formula and the steps can constantly keep the state of the highest purity of the waste sand for collection so as to achieve the state of maximum benefit; and finally, obtaining the real-time opening angle of the air suction opening (124) by using the formula (3) in the step A4, substituting the change quantity of the pressure value in the unit time with the highest purity of the waste sand obtained in the step A3 into the real-time automatic collection in the state of the highest purity of the waste sand all the time in the collection process, so that the aim of automatic control is fulfilled, and compared with the automatic control formula added by other methods and the steps, the automatic collection method has the advantages that the automation degree of the whole mechanism is higher, and 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.