CN218349935U

CN218349935U - Molding sand air permeability sample preparation facilities

Info

Publication number: CN218349935U
Application number: CN202222526731.2U
Authority: CN
Inventors: 邓宇辉; 吴执成; 钟飞升
Original assignee: Wuhan Fengyuanzhisheng Technology Co ltd; ZHANGWU COUNTY LIAN XIN FOUNDRY SILICON SAND CO LTD
Current assignee: Wuhan Fengyuanzhisheng Technology Co ltd; ZHANGWU COUNTY LIAN XIN FOUNDRY SILICON SAND CO LTD
Priority date: 2022-09-23
Filing date: 2022-09-23
Publication date: 2023-01-20
Anticipated expiration: 2032-09-23

Abstract

The utility model discloses a device for preparing a sample with air permeability of molding sand, which belongs to the technical field of molding sand testing; it includes: a vertically through sand cavity is arranged in the middle of the sand section mould; the reverse die assembly comprises a liftable storage box, the bottom of the storage box is provided with a sand outlet hole arranged relative to the sand mold cavity, and the bottom of the storage box can be abutted against the top of the sand mold and seal the upper opening of the sand mold cavity; the bottom of the storage box is provided with an exhaust groove, the exhaust groove is arranged opposite to the sand outlet, and the exhaust groove can be communicated with the sand mold cavity; the mold stripping assembly comprises a movable block capable of lifting, the movable block is arranged in the sand mold cavity and is in sliding connection with the inner wall of the sand mold cavity, and the sliding track of the movable block in the sand mold cavity is provided with a first position for filling molding sand to form a molding sand sample and a second position for ejecting the molded molding sand sample; the mould drying component comprises a heating pipe, the heating pipe is arranged in the sand mould and surrounds the sand mould cavity, the utility model discloses can prepare standardized molding sand sample and test.

Description

Molding sand air permeability sample preparation facilities

Technical Field

The utility model relates to a molding sand test technical field especially relates to a molding sand air permeability sample preparation facilities.

Background

The molding sand is generally prepared by mixing molding materials such as raw sand for casting, a molding sand binder, auxiliary additives and the like according to a certain proportion. In production and scientific research, the air permeability of molding sand is often required to be tested, and usually, a plurality of sand mold samples are prepared after the molding sand is prepared according to a certain proportion, and the air permeability of the plurality of sand mold samples is respectively tested to obtain the average air permeability of the molding sand in the proportion.

In order to realize standardized measurement, sand mold samples with basically consistent shapes and internal structures need to be prepared, and the air permeability of each sand mold sample is ensured to be in an approximate range.

However, in the existing sand mold sample preparation equipment, the sand mold sample is difficult to demould, and the damage of the sand mold sample is easily caused. The production efficiency is not high, and a plurality of sand mold samples are difficult to prepare under the same condition, so that the air permeability of each sand mold sample has a large difference, and the real air permeability of the molding sand under a certain proportion is difficult to obtain.

SUMMERY OF THE UTILITY MODEL

In view of the above, there is a need to provide a device for preparing a sample of air permeability of molding sand, which solves the problem of lack of standardized equipment for preparing a sample of a molding sand.

The utility model provides a molding sand air permeability sample preparation facilities, include:

the sand mold comprises a sand mold, wherein a vertically through sand cavity is formed in the middle of the sand mold;

the mold reversing assembly is arranged above the sand mold and comprises a liftable storage box, the bottom of the storage box is provided with a sand outlet hole arranged relative to the sand mold cavity, and the bottom of the storage box can be abutted against the top of the sand mold and can block an upper opening of the sand mold cavity; an exhaust groove is formed in the bottom of the storage box, the exhaust groove is arranged opposite to the sand outlet hole, and the exhaust groove can be communicated with the sand mold cavity;

the mold stripping assembly comprises a lifting movable block, the movable block is arranged in the sand cavity and is in transition fit and sliding connection with the inner wall of the sand cavity, and the sliding track of the movable block in the sand cavity is provided with a first position for filling molding sand to form a molding sand sample and a second position for ejecting the molded molding sand sample;

and the mold drying component comprises a heating pipe, and the heating pipe is arranged in the sand mold and surrounds the sand mold cavity.

Further, the section of the sand cavity is circular.

Furthermore, a first lifting unit is arranged between the bottom of the moving block and the rack, and the first lifting unit can drive the moving block to vertically move along the sand mold cavity.

Further, the first lifting unit is an air cylinder, a hydraulic cylinder or an electric push rod.

Furthermore, a second lifting unit is arranged between the storage box and the rack, and the telescopic end of the second lifting unit is detachably connected with the storage box.

Further, the second lifting unit is an air cylinder, a hydraulic cylinder or an electric push rod.

Furthermore, a channel is arranged in the sand mould, the channel is in a shape of a square circle and surrounds the sand mould cavity, the heating pipe penetrates through the channel, and water, oil or steam is introduced into the heating pipe.

Furthermore, the sand mould fixing device further comprises a case, and the bottom of the case is fixedly connected with the sand mould through a support.

Furthermore, a display screen is arranged on the case and embedded in the case shell.

Compared with the prior art, the utility model discloses the beneficial effect who has does:

(1) The utility model discloses a molding sand air permeability sample preparation facilities is equipped with the reverse mould subassembly in the top of sand mould, and the reverse mould subassembly includes the storage case of liftable, and storage bottom of the case portion is equipped with the sand outlet that relative sand mould chamber set up, and the storage case can descend and with the top butt of sand section mould, and the upper shed of sand mould chamber is sealed, flows according to the molding sand of certain proportion misce bene in the sand outlet, fills the sand mould chamber of sand mould, and degree of automation is high, and maneuverability is good.

(2) The utility model discloses a molding sand air permeability sample preparation facilities is equipped with the demolding subassembly in the lower part of sand mould, and the demolding subassembly includes the movable block of liftable, and the movable block sets up in the sand die cavity with the inner wall transition fit and the sliding connection of sand die cavity, and the movable block has the first position that supplies in filling the molding sand in order to form the molding sand sample in the sand die cavity slip orbit to and supply in the second position of ejecting fashioned molding sand sample. The periphery of the moving block is connected with the inner wall of the sand mold cavity of the sand mold in a sealing and sliding mode, and the molding sand located in the sand mold cavity cannot leak from the gap between the moving block and the sand mold cavity. When the moving block moves upwards to the second position, the formed sand mold sample can be ejected out of the sand mold cavity automatically, the mold-withdrawing and discharging of the sand mold sample are completed, and the integrity of the sand mold sample is good.

(3) The utility model discloses a molding sand air permeability sample preparation facilities is equipped with the mould subassembly of drying by the fire in the sand mould, and the mould subassembly of drying by the fire includes the heating pipe, and the heating pipe sets up in the sand mould and encircles the setting of sand mould chamber, and the heating pipe can preheat and keep warm to the sand mould chamber, promotes the drying of sand mould sample, improves the shaping efficiency of sand mould sample.

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 application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:

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

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

FIG. 3 is a schematic cross-sectional view of a sand mold of the present invention;

FIG. 4 is a schematic structural view of a material storage box of the present invention;

in the figure, a sand mold 100, a sand cavity 110, a channel 120, a reverse mold assembly 200, a storage box 210, a sand outlet 211, an exhaust groove 212, a second lifting unit 220, a connecting piece 230, a mold stripping assembly 300, a moving block 310, a first lifting unit 320, a mold drying assembly 400, a heating pipe 410, a machine box 500 and a display screen 510 are shown.

Detailed Description

The following detailed description of the preferred embodiments of the invention, which is to be read in connection with the accompanying drawings, forms a part of this application, and together with the embodiments of the invention, serve to explain the principles of the invention and not to limit its scope.

A molding sand air permeability sample preparation facilities in this embodiment relates to molding sand test technical field, can standardize the molding sand sample of preparation shape and inner structure basic uniformity, ensures that the air permeability of each molding sand sample all is located reasonable within range for the result of test is more accurate.

Referring to fig. 1 to 4, an apparatus for preparing a permeability sample of molding sand in the present embodiment includes: a sand mold 100, a reverse mold assembly 200, an ejection assembly 300, and a drying assembly 400.

The middle part of the sand mould 100 is provided with a vertically through sand mould cavity 110, and the moulding sand is poured into the sand mould cavity 110 for drying and forming to obtain a moulding sand sample.

The reverse mould subassembly 200 sets up in the top of sand mould 100, reverse mould subassembly 200 includes the storage case 210 of liftable, storage case 210 bottom is equipped with the sand outlet 211 that relative sand mold cavity 110 set up, storage case 210 can descend and with the top butt of sand mould 100, with the opening on the sealed sand mold cavity 110, flow out according to the certain proportion misce bene's molding sand from sand outlet 211, pour into the sand mold cavity 110 of sand mould 100, and the automation is high, and good operability.

The demolding assembly 300 includes a movable block 310 capable of being lifted, the movable block 310 is disposed in the sand cavity 110 and is slidably connected to the inner wall of the sand cavity 110, the movable block 310 is in transition fit with the inner wall of the sand cavity 110, and a sliding track of the movable block 310 in the sand cavity 110 has a first position for filling molding sand to form a molding sand sample and a second position for ejecting the molding sand sample. And the peripheral side of the moving block 310 is connected to the inner wall of the sand cavity 110 of the sand mold 100 in a sealing and sliding manner, so that the molding sand in the sand cavity 110 cannot leak from the gap between the moving block 310 and the sand cavity 110. When the moving block 310 moves upwards to the second position, the formed sand mold sample can be automatically ejected out of the sand mold cavity 110, the mold-withdrawing and discharging of the sand mold sample are completed, and the integrity of the sand mold sample is good. The bottom of the storage tank 210 is provided with an exhaust groove 212, the exhaust groove 212 is arranged opposite to the sand outlet 211, and the exhaust groove 212 can be communicated with the sand cavity 110. When the sand mold cavity 110 is filled with molding sand, the gas in the sand mold cavity 110 may be exhausted from the exhaust groove 212, so that the molding sand is filled into the sand mold cavity 110.

The mold drying assembly 400 comprises a heating pipe 410, the heating pipe 410 is arranged in the sand mold 100 and surrounds the sand mold cavity 110, and the heating pipe 410 can preheat and preserve heat of the sand mold cavity 110, so that drying of a sand mold sample is promoted, and molding efficiency of the sand mold sample is improved.

In the use, at first during the storage case 210 is filled to the molding sand that will mix according to a certain proportion, movable block 310 to first position, form in the sand die cavity 110 and supply in the filling chamber of filling the molding sand in order to form the molding sand sample, drive storage case 210 moves down and with sand mould 100 butt, go out sand hole 211 and communicate sand die cavity 110 and pour the molding sand into sand mould cavity 110. After the sand mold cavity 110 is filled, the accumulator tank 210 is moved up away from the sand mold 100. The heating pipe 410 heats the sand mold cavity 110, and after the sand mold sample in the sand mold cavity 110 is dried, the moving block 310 is driven to move upwards to eject the sand mold sample out of the sand mold cavity 110.

Referring to fig. 1 and 2, the cross-section of the sand cavity 110 is circular, and the circular sand cavity 110 can shape the molding sand into a standard cylindrical shape. As a further embodiment, the moving block 310 is also circular, and the moving block 310 may be closely fitted to the sand mold chamber 110. A first lifting unit 320 is arranged between the bottom of the moving block 310 and the frame, the first lifting unit 320 is specifically an air cylinder, a hydraulic cylinder or an electric push rod, and the first lifting unit 320 can push the moving block 310 to move along the sand mold cavity 110 to eject a sand mold sample molded in the sand mold cavity 110.

Referring to fig. 1 and fig. 2, a second lifting unit 220 is disposed between the material storage box 210 and the frame, the second lifting unit 220 is specifically an air cylinder, a hydraulic cylinder or an electric push rod, a telescopic rod of the air cylinder, the hydraulic cylinder or the electric push rod is detachably connected to the material storage box 210, and the second lifting unit 220 can drive the material storage box 210 to move up and down. In the specific implementation process, the connecting member 230 is arranged between the storage box 210 and the second lifting unit 220, and the connecting member 230 is fastened with the storage box 210, so that the storage box 210 can be very conveniently detached from the connecting member 230, and the storage box 210 can be conveniently filled.

It should be noted that: the connecting member 230 is specifically a U-shaped seat, two inner sides of the U-shaped seat are respectively provided with protrusions which are oppositely arranged, the protrusions are used for clamping the material storage box 210, the circumferential side of the material storage box 210 is provided with clamping convex rings corresponding to the protrusions, and the clamping convex rings of the material storage box 210 can move along the U-shaped seat to complete the dismounting. Be equipped with in the U-shaped seat with the pressurization chamber of the inside intercommunication of storage case 210, the pressurization chamber passes through the pipeline and communicates with external air compressor machine, and the air compressor machine can be to the intracavity delivery air that pressurizes, increases the pressure of pressurization intracavity portion. When the bottom of storage case 210 and sand mould 100 butt, the top and the U-shaped seat butt of storage case 210, pressurization chamber and storage case 210's inner chamber merge into a seal chamber, through carrying out air pressurization to the pressurization chamber, can pour the molding sand into in the sand mould cavity 110.

Referring to fig. 3, a passage 120 is formed in the sand mold 100, the passage 120 is a square-shaped passage and surrounds the sand cavity 110, a heating pipe 410 is inserted into the passage 120, and water, oil or steam is introduced into the heating pipe 410. Two ends of the heating pipe 410 are respectively communicated with a heat source, the heat source is constant-temperature water, oil or steam, and the water, the oil or the steam circularly flows in the heating pipe 410 under the action of a pump to heat the sand mold cavity 110, so that the molding of the sand mold sample is promoted. As another embodiment, a heating wire is inserted into the heating tube 410, and two ends of the heating wire are connected to a circuit to electrically heat the heating tube 410.

Referring to fig. 1 and 2, the sand mold manufacturing apparatus further includes a chassis 500, and the bottom of the chassis 500 is fixedly connected to the sand mold 100 through a bracket. The case 500 is connected to the second elevating unit 220 and the first elevating unit 320, respectively, and supports the installation and fixation of an air cylinder, a hydraulic cylinder, or an electric push rod. The sand mold 100 is also fixed to the casing 500, and may determine the driving stroke of the second elevating unit 220 and the first elevating unit 320. As a further implementation manner, a display screen 510 is arranged on the case 500, the display screen 510 is embedded in the casing of the case 500, the display screen 510 is electrically connected with the pressure sensor and the temperature sensor in each component, and the working condition of each component can be monitored through the display screen 510, so that the molding environment of the sand mold sample is ensured not to change.

The working process is as follows: firstly, the storage box 210 is filled with molding sand mixed according to a certain proportion, the storage box 210 is fixed on the second lifting unit 220 by means of the connecting piece 230, the first lifting unit 320 is adjusted, the first lifting unit 320 is in a contraction state, the moving block 310 is located at the first position of the sand mold cavity 110, the storage box 210 is driven to move downwards and abut against the sand mold 100, the sand outlet hole 211 is aligned with the sand mold cavity 110, and the molding sand is poured into the sand mold cavity 110. Next, after the sand mold cavity 110 is filled, the holding tank 210 is moved upward away from the sand mold 100. The heating pipe 410 heats the sand mold cavity 110, and after the sand mold sample in the sand mold cavity 110 is dried, the moving block 310 is driven to move up to the second position, so that the sand mold sample is ejected out of the sand mold cavity 110.

The above description is only for the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention.

Claims

1. The utility model provides a molding sand air permeability sample preparation facilities which characterized in that includes:

the mould reversing assembly is arranged above the sand mould and comprises a liftable storage box, the bottom of the storage box is provided with a sand outlet hole arranged opposite to the sand mould cavity, and the bottom of the storage box can abut against the top of the sand mould and block an upper opening of the sand mould cavity; an exhaust groove is formed in the bottom of the storage box, the exhaust groove is arranged opposite to the sand outlet hole, and the exhaust groove can be communicated with the sand mold cavity;

the mold stripping assembly comprises a movable block capable of lifting, the movable block is arranged in the sand cavity, is in transition fit with the inner wall of the sand cavity and is in sliding connection with the inner wall of the sand cavity, and a sliding track of the movable block in the sand cavity is provided with a first position for filling molding sand to form a molding sand sample and a second position for ejecting the molded molding sand sample;

2. The apparatus of claim 1, wherein the sand cavity has a circular cross-section.

3. The molding sand air permeability sample preparation device according to claim 2, wherein a first lifting unit is arranged between the bottom of the moving block and the frame, and the first lifting unit can drive the moving block to vertically move along the sand mold cavity.

4. The apparatus of claim 3, wherein the first lifting unit is a pneumatic cylinder, a hydraulic cylinder or an electric push rod.

5. The apparatus for preparing a molding sand permeability sample according to claim 1, wherein a second lifting unit is arranged between the storage box and the frame, and a telescopic end of the second lifting unit is detachably connected with the storage box.

6. The apparatus of claim 5, wherein the second lifting unit is a cylinder, a hydraulic cylinder or an electric push rod.

7. The molding sand air permeability sample preparation device according to claim 1, wherein a passage is arranged in the sand mold, the passage is in a shape of a Chinese character 'hui' and surrounds the sand mold cavity, the heating pipe penetrates through the passage, and water, oil or steam is introduced into the heating pipe.

8. The molding sand air permeability sample preparation device according to claim 1, further comprising a case, wherein the bottom of the case is fixedly connected with the sand mold through a support.

9. The apparatus for preparing a molding sand permeability sample according to claim 8, wherein a display screen is arranged on the machine case, and the display screen is embedded on the machine case shell.