A sand processing device for lost foam casting production line

Abstract

The invention relates to the field of molding sand processing, and in particular to a sand processing device for a lost foam casting production line, which comprises a base, a molding sand collecting hopper, a feed box, a spiral filter cartridge and a molding sand testing component. The agglomerated molding sand is put into the spiral filter cartridge through the feed box. The spiral filter cartridge has a wave crest portion and a wave trough portion. During the rotation and screening of the spiral filter cartridge, large pieces of agglomerated molding sand are squeezed to the upper end by loose molding sand during the transmission process, so that the large pieces of agglomerated molding sand are more likely to turn over the wave crest portion to the next wave trough portion, and the agglomerated molding sand is separated from the loose molding sand, so that the agglomerated molding sand is prevented from falling onto the loose molding sand to form a buffer, which is helpful to improve the crushing and breaking effect of the agglomerated molding sand; the spiral filter cartridge is a spiral cone structure, and can provide different crushing effects for agglomerated molding sand of different sizes; the molding sand amount in each area inside the spiral filter cartridge is detected by the molding sand testing component, and the inclination angle of the spiral filter cartridge is adjusted according to the test result, so that the distribution of the molding sand inside the spiral filter cartridge is more uniform.

Description

Technical Field

[0001] The invention relates to the technical field of molding sand processing, in particular to a sand processing device for a lost foam casting production line. Background Art

[0002] Molding sand can be divided into surface sand, filling sand and single sand. Surface sand is a layer of molding sand that is close to the casting and has high quality requirements. Filling sand is behind the surface sand layer and does not come into contact with the molten metal, so the quality requirements are not strict. Single sand is molding sand that is not divided into surface sand and back sand, and is mainly used for machine modeling. In addition, the sand molds of large castings often need to be dried before pouring. The molding sand used contains more clay, which is called dry mold sand; small and medium-sized castings often use wet molds for casting, and the molding sand used contains less clay, which is called wet mold sand. After the molding sand is used to complete the casting of parts or equipment, the used molding sand needs to be processed and recycled.

[0003] In the related technology, the sand processing of the lost foam casting production line usually includes magnetic separation, screening, crushing and other processes. Among them, a drum screening device is usually used to filter, screen and crush the molding sand. The drum screening device picks up the molding sand and throws it down by rotation to complete the crushing, breaking up and screening of the molding sand. When the molding sand is thrown down, the clumped molding sand falls on the loose sand. The loose sand will buffer the clumped molding sand, reduce the crushing effect of the clumped molding sand, and affect the processing efficiency. Summary of the invention

[0004] Based on this, it is necessary to provide a lost foam casting production line sand processing device to improve the crushing effect of agglomerated sand in order to address the problem that the current lost foam casting production line sand processing device has poor effect in crushing and breaking up agglomerated sand when screening and crushing the sand.

[0005] The above purpose is achieved by the following technical scheme: comprising a base, a molding sand collecting hopper, a feed box and a spiral filter cartridge;

[0006] The molding sand collecting hopper is installed in the middle of the base, and the feed box is installed at a preset position at one end of the base;

[0007] The spiral filter cartridge is rotatably arranged on the base around its own axis and is located above the molding sand collecting hopper in the vertical direction. One end of the spiral filter cartridge is the feed end, and the other end is the discharge end. The feed end is connected to the feed box, and the material can flow from the feed end to the discharge end of the spiral filter cartridge. The body of the spiral filter cartridge is provided with a plurality of filter holes of the same diameter. The spiral filter cartridge is spiral-shaped, so that it has crests and troughs.

[0008] Optionally, the spiral direction of the spiral filter cartridge is configured so that when the spiral filter cartridge rotates around a preset direction, the material tends to run from the discharge end to the feed end.

[0009] Optionally, the spiral filter cartridge is cylindrical, the spiral filter cartridge is initially tilted and the feed end is higher than the discharge end.

[0010] Optionally, the spiral filter cartridge is in a cone shape, the small end of the spiral filter cartridge is the feed end, and the large end is the discharge end.

[0011] Optionally, a transmission rod is provided at the center of the spiral filter cartridge, and the transmission rod and the spiral filter cartridge are connected by a connecting rod;

[0012] A support seat is provided at one end of the base close to the feed box, and a first bracket is provided on the support seat. A support platform is provided at the other end of the base, and a second bracket is provided on the support platform. One end of the transmission rod is rotatably supported on the first bracket, and the other end is rotatably supported on the second bracket. A motor is provided on the support platform, and the output shaft of the motor is connected to the transmission rod.

[0013] Optionally, a plurality of molding sand testing assemblies are arranged inside the spiral filter cartridge. Multiple groups of molding sand testing assemblies are arranged along the axial direction of the spiral filter cartridge, with at least one in each group. The molding sand testing assemblies are configured to detect the amount of molding sand in the corresponding area inside the spiral filter cartridge. The inclination angle of the spiral filter cartridge can be adjusted.

[0014] Optionally, a power telescopic cylinder is provided on the base, the power telescopic cylinder can be telescoped in the vertical direction, and the support platform is provided at the output end of the power telescopic cylinder;

[0015] A first hinge and a second hinge are respectively provided at both ends of the transmission rod. One end of the transmission rod is hingedly connected to the first bracket through the first hinge, and the other end of the transmission rod is hingedly connected to the second bracket through the second hinge. The second hinge is softly connected to the output shaft of the motor.

[0016] Optionally, the first hinge is hinged to the first bracket ball, and the second hinge is hinged to the second bracket ball.

[0017] Optionally, the second hinged member and the output shaft of the motor are connected by a universal joint transmission or a flexible coupling.

[0018] Optionally, the molding sand test assembly includes a slide rail, an elastic expansion member and a sensing plate, the slide rail is fixedly installed in the spiral filter cartridge, the fixed end of the elastic expansion member is fixedly installed on a fixed seat at the bottom of the slide rail, the top of the output end is fixedly connected to the sensing plate, and the sensing plate is slidably connected to the slide rail;

[0019] The molding sand testing assembly also includes a sensor configured to detect the displacement of the sensing plate.

[0020] The beneficial effects of the present invention are as follows: a spiral filter cartridge is provided in the present invention, and the spiral filter cartridge has a crest portion and a trough portion. During the screening and crushing process, as the spiral filter cartridge rotates, the molding sand rolls inside the spiral filter cartridge, and large pieces of agglomerated molding sand are squeezed to the upper end by the loose molding sand during the transmission process, thereby making it easier for the large pieces of agglomerated molding sand to roll over the crest portion. After the large pieces of agglomerated molding sand pass over the crest portion of the spiral filter cartridge, they will come to the next trough portion, and so on, ultimately separating the agglomerated molding sand from the loose molding sand. The agglomerated molding sands of different degrees are also separated by the same principle, preventing the agglomerated molding sand from falling onto the loose molding sand to form a buffer, which helps to improve the crushing and breaking up effect of the agglomerated molding sand.

[0021] Furthermore, the spiral direction of the spiral filter cartridge is arranged so that the material tends to flow toward the feed end when the spiral filter cartridge rotates, which helps to increase the residence time of the molding sand in the spiral filter cartridge and improve the screening effect.

[0022] Furthermore, the spiral filter cartridge is configured to be conical, and its small end is the feed end, which helps to provide different crushing effects for molding sands with different degrees of cohesion; the larger the agglomerates are toward the rear end, the stronger the crushing effect is, which helps to improve the crushing effect of agglomerated molding sands.

[0023] Furthermore, by providing a molding sand testing component and setting the inclination angle of the spiral filter cartridge to be adjustable, the molding sand testing component senses the amount of material in different areas inside the spiral filter cartridge and adjusts the inclination of the spiral filter cartridge according to the amount of material, so that the amount of molding sand in each area can be evenly distributed, which helps to improve the crushing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of a sand processing device for a lost foam casting production line of the present invention;

[0025] Figure 2 for Figure 1 A right view of a sand processing device for a lost foam casting production line of the present invention;

[0026] Figure 3 for Figure 2 Middle AA section view;

[0027] Figure 4 for Figure 3 Enlarged view of point B in the middle.

[0028] in:

[0029] 1. Base;

[0030] 2. Molding sand collecting hopper; 21. Collection box; 22. Baffle;

[0031] 3. Support seat;

[0032] 4. Feed box; 41. Feed section; 42. Discharge section;

[0033] 5. The first bracket;

[0034] 6. Spiral filter cartridge; 61. Filter hole; 62. Feed end; 63. Discharge end; 64. Wave crest; 65. Wave trough;

[0035] 7. Transmission rod; 71. First hinge; 72. Second hinge;

[0036] 8. Connecting rod;

[0037] 9. The second bracket;

[0038] 10. Power telescopic cylinder;

[0039] 11. Support platform;

[0040] 12. Motor;

[0041] 13. Molding sand testing assembly; 131. Slide rail; 1311. Fixed seat; 132. Elastic telescopic member; 1321. Outer cylinder; 1322. Inner rod; 133. Induction plate. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0043] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in the present invention, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0044] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0045] like Figure 1-Figure 4 As shown, a sand processing device for a lost foam casting production line provided by the present invention comprises a base 1, a molding sand collecting hopper 2, a feed box 4 and a spiral filter cartridge 6.

[0046] The molding sand receiving hopper 2 is installed in the middle of the base 1, and the feed box 4 is installed at a preset position at one end of the base 1. The spiral filter cartridge 6 is rotatably arranged on the base 1 around its own axis and is directly above the molding sand receiving hopper 2 in the vertical direction. One end of the spiral filter cartridge 6 is the feed end 62, and the other end is the discharge end 63. The feed end 62 is connected to the feed box 4, and the material can flow from the feed end 62 of the spiral filter cartridge 6 to the discharge end 63. The body of the spiral filter cartridge 6 is provided with a plurality of filter holes 61 with the same diameter. The spiral filter cartridge 6 is spiral-shaped, so that it has a crest portion 64 and a trough portion 65, and the crest portion 64 and the trough portion 65 are both smooth arcs.

[0047] The molding sand collecting hopper 2 is used to collect the molding sand falling from the filter holes 61 of the spiral filter cartridge 6; the feed box 4 is used to transfer the molding sand to be processed into the spiral filter cartridge 6; the spiral filter cartridge 6 is a spiral structure with a feed end 62 and a discharge end 63. The molding sand to be processed enters the spiral filter cartridge 6 from the feed end 62. As the spiral filter cartridge 6 rotates, qualified molding sand can fall through the filter holes 61 into the molding sand collecting hopper 2 for recovery, and unqualified materials can be discharged from the discharge end 63 of the spiral filter cartridge 6.

[0048] When the device is in use, the molding sand enters the spiral filter cartridge 6 from the feed box 4. As the spiral filter cartridge 6 rotates, the molding sand rolls inside the spiral filter cartridge 6 and is then screened and crushed (crushing specifically refers to the crushing and breaking up of the agglomerated molding sand). In the process of continuous screening of the molding sand, large pieces of agglomerated molding sand are squeezed to the upper end by the loose molding sand during the transmission process, so that the large pieces of agglomerated molding sand are easier to turn over the crest part 64. After the large pieces of agglomerated molding sand pass over the crest part 64 of the spiral filter cartridge 6, they will come to the next trough part 65, and so on, and finally the agglomerated molding sand is separated from the loose molding sand. The agglomerated molding sand of different degrees is also separated by the same principle, which prevents the agglomerated molding sand from falling on the loose molding sand to form a buffer, which helps to improve the crushing effect of the agglomerated molding sand.

[0049] In a further embodiment, the spiral direction of the spiral filter cartridge 6 is configured so that when the spiral filter cartridge 6 rotates around a preset direction, the material tends to move from the discharge end 63 to the feed end 62. In this way, when the material moves from the feed end 62 to the discharge end 63 under the action of gravity, as the spiral filter cartridge 6 rotates, the grooves of the trough portion 65 of the spiral filter cartridge 6 tend to transfer the molding sand to the feed end 62 of the spiral filter cartridge 6, which helps to increase the residence time of the molding sand in the spiral filter cartridge 6 and improve the screening effect.

[0050] In one embodiment, the spiral filter cartridge 6 can be set to be cylindrical. When the spiral filter cartridge 6 is cylindrical, the spiral filter cartridge 6 is initially tilted and the feed end 62 is higher than the discharge end 63 to facilitate the flow of materials from the feed end 62 to the discharge end 63.

[0051] In another preferred embodiment, the spiral filter cartridge 6 can also be set to a conical cylinder shape, with the small end of the spiral filter cartridge 6 being the feed end 62 and the large end being the discharge end 63. When the spiral filter cartridge 6 is in a conical cylinder shape, the spiral filter cartridge 6 can be kept horizontally arranged in the initial state, and the material flows from the feed end 62 to the discharge end 63 depending on the taper of the spiral filter cartridge 6. The spiral filter cartridge 6 can also be kept in an inclined state with the feed end 62 higher than the discharge end 63. The specific height difference is set according to actual needs.

[0052] Setting the spiral filter cartridge 6 to be conical helps to provide different crushing effects for agglomerated molding sands of different sizes. It can be understood that after the agglomerated molding sands are separated by the spiral structure of the spiral filter cartridge 6, the closer to the discharge end 63, the greater the degree of cohesion of the molding sands. At the same time, during the rotation of the spiral filter cartridge 6, the angular velocity of the spiral filter cartridge 6 at different positions in its axial direction is the same. Since the spiral filter cartridge 6 is conical, under the same angular velocity, the closer to the discharge end 63, the larger the diameter of the spiral filter cartridge 6, the greater the linear velocity of the spiral filter cartridge 6, the more kinetic energy is provided to the sand molds closer to the discharge end 63 of the spiral filter cartridge 6, the better the crushing effect, and the stronger the crushing force is for the molding sands with larger agglomerates, which helps to improve the crushing effect of agglomerated molding sands.

[0053] It should be added that, in order to facilitate the support and drive of the spiral filter cartridge 6, a transmission rod 7 is provided at the center of the spiral filter cartridge 6, and the transmission rod 7 and the spiral filter cartridge 6 are connected by a connecting rod 8. The connecting rod 8 is provided with multiple groups along the extension direction of the transmission rod 7, and each group has multiple connecting rods and is evenly distributed along the circumferential direction, so that the connection between the transmission rod 7 and the spiral filter cartridge 6 is more reliable. Both ends of the transmission rod 7 are supported on the base 1 and can rotate relative to the base 1. One end of the transmission rod 7 is connected to a motor 12, so that it rotates under the drive of the motor 12, thereby driving the spiral filter cartridge 6 to rotate.

[0054] More specifically, a support base 3 is provided at one end of the base 1 close to the feed box 4, a first bracket 5 is provided on the support base 3, a support platform 11 is provided at the other end of the base 1, a second bracket 9 is provided on the support platform 11, one end of the transmission rod 7 is rotatably supported on the first bracket 5, and the other end is rotatably supported on the second bracket 9, a motor 12 is provided on the support platform 11 and its output shaft is connected to the transmission rod 7 to drive the transmission rod 7 to rotate.

[0055] In a further embodiment, the sand processing device of the lost foam casting production line of the present invention also includes several groups of molding sand testing components 13, and the molding sand testing components 13 are located inside the spiral filter cartridge 6. There are multiple groups of molding sand testing components 13 along the axial direction of the spiral filter cartridge 6, with at least one in each group. The molding sand testing components 13 are configured to detect the amount of molding sand in the corresponding area inside the spiral filter cartridge 6. In the preferred embodiment given by the present invention, several groups of molding sand testing components 13 are at least evenly distributed in the front, middle and rear sections of the spiral filter cartridge 6, which are used to test the amount of molding sand in the front, middle and rear sections of the spiral filter cartridge 6; the angle between the axis of the spiral filter cartridge 6 and the horizontal plane can be adjusted, that is, the inclination angle of the spiral filter cartridge 6 can be adjusted, and the inclination angle of the spiral filter cartridge 6 is adjusted according to the result measured by the molding sand testing component 13, so that the molding sand inside the spiral filter cartridge 6 is more evenly distributed.

[0056] In one embodiment, in order to facilitate the adjustment of the inclination angle of the spiral filter cartridge 6, a power telescopic cylinder 10 is provided on the base 1, and the power telescopic cylinder 10 can be telescoped in the vertical direction. The support platform 11 is provided at the output end of the power telescopic cylinder 10. The power telescopic cylinder 10 drives the support platform 11 to move in the vertical direction, and the height of the support platform 11 can be adjusted, thereby adjusting the height of one end of the transmission rod 7, so as to adjust the inclination direction of the spiral filter cartridge 6. The power telescopic cylinder 10 can be a power element capable of outputting linear motion, such as an electric telescopic cylinder, a hydraulic telescopic cylinder, or a pneumatic telescopic cylinder.

[0057] Furthermore, a first hinge 71 and a second hinge 72 are respectively provided at both ends of the transmission rod 7; one end of the transmission rod 7 is hingedly connected to the first bracket 5 through the first hinge 71 (specifically a ball hinge), and the other end of the transmission rod 7 is hingedly connected to the second bracket 9 through the second hinge 72 (specifically a ball hinge), and the second hinge 72 is softly connected to the output shaft of the motor 12; the soft connection form between the second hinge 72 and the output shaft of the motor 12 can be one of a universal joint transmission connection or a flexible coupling connection.

[0058] When the spiral filter cartridge 6 needs to rotate, the motor 12 drives the transmission rod 7 to rotate through the second hinge 72. When the transmission rod 7 rotates, the spiral filter cartridge 6 is driven to rotate synchronously through the connecting rod 8. When the spiral filter cartridge 6 is adjusting the tilt angle, the angle between the spiral filter cartridge 6 and the driving device (motor 12) will change, so a soft connection is used between the driving device and the spiral filter cartridge 6 to ensure the normal operation of the device.

[0059] More specifically, the first hinge 71 is an articulated ball head, which is ball-jointed with the first bracket 5, and the second hinge 72 is a rod-shaped structure with a ball head in the middle. One end of the second hinge 72 is axially slidably plugged with the transmission rod 7, and the other end of the second hinge 72 is softly connected with the output shaft of the motor 12. The ball head of the second hinge 72 is ball-jointed with the second bracket 9.

[0060] In one embodiment, the molding sand testing assembly 13 includes a slide rail 131, an elastic telescopic member 132 and a sensing plate 133. The slide rail 131 is fixedly installed in the spiral filter cartridge 6. The fixed end of the elastic telescopic member 132 is fixedly installed on the fixed seat 1311 at the bottom of the slide rail 131, and the top of the output end is fixedly connected to the sensing plate 133. Specifically, the elastic telescopic member 132 includes an outer cylinder 1321 and an inner rod 1322. The outer cylinder 1321 is fixedly installed on the fixed seat 1311 at the bottom of the slide rail 131, the top of the inner rod 1322 is fixedly connected to the sensing plate 133, and the sensing plate 133 is slidably connected to the slide rail 131.

[0061] The molding sand testing assembly 13 also includes a sensor (not shown in the figure), and the sensor configuration can detect the displacement of the sensing plate 133. The sensor can be set on the sensing plate 133 or the fixing seat 1311. The preferred sensor of the present invention is installed inside the elastic telescopic member 132. By detecting the displacement of the elastic telescopic member 132, the displacement of the sensing plate 133 is reflected, and then the amount of molding sand in the area of ​​the spiral filter cartridge 6 is obtained. The sensor is set inside the elastic telescopic member 132 to avoid sensor damage and extend the service life of the sensor.

[0062] During the rotation of the spiral filter cartridge 6, the induction plate 133 will push the molding sand, and the molding sand squeezes the induction plate 133 to move the inner rod 1322 toward the bottom of the outer cylinder 1321, and the elastic telescopic member 132 is compressed. The more molding sand there is in the corresponding area, the greater the extrusion force on the induction plate 133, and the greater the displacement of the induction plate 133. The sensor detects the compression amount of the elastic telescopic member 132 and sends it to the control module. The control module can obtain the amount of molding sand in the front, middle and rear sections of the spiral filter cartridge 6 based on the detection data, thereby controlling the movement of the support platform 11 through the power telescopic cylinder 10, so that the support platform 11 rises or falls, and the inclination angle of the spiral filter cartridge 6 is adjusted, so that the amount of molding sand in the front, middle and rear sections of the spiral filter cartridge 6 is in a relatively uniform state, thereby improving the processing efficiency of the molding sand. At the same time, the induction plate 133 can also stir the molding sand inside the spiral filter cartridge 6 to improve the screening and crushing efficiency and effect.

[0063] In one embodiment, the molding sand collecting hopper 2 includes a collecting box 21 and two baffles 22 . The two baffles 22 are symmetrically arranged on the collecting box 21 at a preset inclination angle, and the minimum distance between the two baffles 22 is greater than the diameter of the spiral filter cartridge 6 .

[0064] By setting the two baffles 22, it can be ensured that the molding sand falling from the spiral filter cartridge 6 can enter the collection box 21, ensuring that the molding sand is recovered without omission, and it can also prevent the molding sand from falling to other positions of the device, ensuring the cleanliness of the recycling environment.

[0065] In one embodiment, the feed box 4 includes a feed portion 41 and a discharge portion 42 , and the feed portion 41 and the discharge portion 42 are connected to each other. At least a portion of the discharge portion 42 is accommodated in the spiral filter cartridge 6 , so that the output molding sand falls into the spiral filter cartridge 6 .

[0066] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0067] The above embodiments only express several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for those of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A sand processing device for a lost foam casting production line, characterized in that: It includes a base, a molding sand collecting hopper, a feed box and a spiral filter cartridge; The molding sand collecting hopper is installed in the middle of the base, and the feed box is installed at a preset position at one end of the base; The spiral filter cartridge is rotatably arranged on the base around its own axis and is located above the molding sand collecting hopper in the vertical direction. One end of the spiral filter cartridge is the feeding end, and the other end is the discharging end. The feeding end is connected to the feeding box, and the material can flow from the feeding end to the discharging end of the spiral filter cartridge. The body of the spiral filter cartridge is provided with a plurality of filter holes of the same diameter. The spiral filter cartridge is spiral-shaped, so that it has a crest portion and a trough portion. The spiral direction of the spiral filter cartridge is configured so that when it rotates around a preset direction, the material has a tendency to run from the discharging end to the feeding end. A plurality of molding sand test assemblies are arranged inside the spiral filter cartridge. A plurality of molding sand test assemblies are arranged in a plurality of groups along the axial direction of the spiral filter cartridge, and each group has at least one molding sand test assembly. The molding sand test assembly is configured to detect the amount of molding sand in the corresponding area inside the spiral filter cartridge. The inclination angle of the spiral filter cartridge can be adjusted. The molding sand test assembly includes a slide rail, an elastic telescopic member and a sensing plate. The slide rail is fixedly installed in the spiral filter cartridge. The fixed end of the elastic telescopic member is fixedly installed on the fixed seat at the bottom of the slide rail, and the top of the output end is fixedly connected to the sensing plate, and the sensing plate is slidably connected to the slide rail. The molding sand testing component also includes a sensor, which is configured to detect the displacement of the sensing plate. The molding sand testing component senses the amount of material in different areas inside the spiral filter cartridge, and adjusts the inclination of the spiral filter cartridge according to the amount of material, so that the amount of molding sand in each area can be evenly distributed.

2. The sand processing device for lost foam casting production line according to claim 1 is characterized in that: The spiral filter cartridge is cylindrical in shape, and the spiral filter cartridge is initially tilted and the feed end is higher than the discharge end.

3. The sand processing device for lost foam casting production line according to claim 1 is characterized in that: The spiral filter cartridge is in the shape of a cone, with the small end of the spiral filter cartridge being the feed end and the large end being the discharge end.

4. The sand processing device for lost foam casting production line according to claim 2 or 3, characterized in that: A transmission rod is arranged at the center of the spiral filter cartridge, and the transmission rod and the spiral filter cartridge are connected by a connecting rod; A support seat is provided at one end of the base close to the feed box, and a first bracket is provided on the support seat. A support platform is provided at the other end of the base, and a second bracket is provided on the support platform. One end of the transmission rod is rotatably supported on the first bracket, and the other end is rotatably supported on the second bracket. A motor is provided on the support platform, and the output shaft of the motor is connected to the transmission rod.

5. The sand processing device for lost foam casting production line according to claim 1 is characterized in that: A power telescopic cylinder is arranged on the base, and the power telescopic cylinder can be telescoped in the vertical direction, and the support platform is arranged at the output end of the power telescopic cylinder; A first hinge and a second hinge are respectively provided at both ends of the transmission rod. One end of the transmission rod is hingedly connected to the first bracket through the first hinge, and the other end of the transmission rod is hingedly connected to the second bracket through the second hinge. The second hinge is softly connected to the output shaft of the motor.

6. The sand processing device for lost foam casting production line according to claim 5 is characterized in that: The first hinge is hinged to the first bracket ball, and the second hinge is hinged to the second bracket ball.

7. The sand processing device for lost foam casting production line according to claim 5, characterized in that: The second hinged member and the output shaft of the motor are connected by a universal joint transmission or a flexible coupling.

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