Bionic trunk type sand core mold demolding device and operation method

Abstract

The invention discloses a bionic trunk type sand core mold demolding device which comprises a shell fastening unit, a moving unit and a bionic trunk type sand cleaning unit, and the shell fastening unit is used for fixing a sand core mold shell to a demolding base; the moving unit is used for driving the elephant-trunk-imitating sand cleaning unit to slide in the direction close to or away from the sand core mold shell; the elephant trunk imitating type sand removing unit is used for removing the sand core from multiple angles; wherein one end of the elephant-trunk-imitated sand removing unit is connected with the moving unit through a guide rail fastening seat, the other end of the elephant-trunk-imitated sand removing unit is provided with a sand removing device, and the elephant-trunk-imitated sand removing unit drives the sand removing device to perform multi-angle deviation so that the sand removing device can rotate in the deviation direction to remove a sand core. The flexible multi-angle offset action of the trunk can be simulated through the trunk-imitating type sand cleaning unit, demolding can be completed more accurately, sand cleaning blind areas are avoided, damage to the sand core is reduced, the integrity and precision of the sand core are guaranteed, and then the casting quality is improved.

Description

Technical Field

[0001] The invention relates to the technical field of demoulding production of sand core molds, and in particular to a bionic elephant trunk type sand core mold demoulding device and an operating method. Background Art

[0002] The sand core is a key part in forming the inner cavity of the casting during the casting process. After casting, the sand core inside the closed cavity of the mold needs to be removed. How to help the sand core to be smoothly removed from the mold is very important to ensure the quality and precision of the sand core.

[0003] In the prior art, such as the patent "A small-caliber water-soluble core mold demolding tool" with publication number CN112743720A, this application can simultaneously drive the demolding drill mechanism and the transmission mechanism to rotate through the differential mechanism during operation, thereby realizing a series of demolding operations such as hole opening, expansion, water injection and molten sand, scraping sand and cleaning sand; however, this application has the following defects during operation: the sand core removal direction is fixed, and multi-angle removal actions cannot be performed, the operation flexibility is poor, and it cannot meet the requirements of high-precision demolding. Summary of the invention

[0004] The purpose of the present invention is to provide a bionic elephant trunk type sand core mold demoulding device and an operating method, which are used to solve the problem of poor sand core removal effect in the prior art.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A bionic elephant trunk type sand core mold demoulding device, comprising:

[0007] A shell fastening unit, used to fix the sand core mold shell on the demoulding base;

[0008] A moving unit is used to drive the elephant trunk-like sand cleaning unit to slide towards or away from the sand core mold shell;

[0009] The elephant trunk-like sand cleaning unit is used to remove sand cores from multiple angles;

[0010] Among them, one end of the elephant trunk-like sand cleaning unit is connected to the mobile unit through a guide rail fastening seat, and the other end is provided with a sand cleaning device. The elephant trunk-like sand cleaning unit drives the sand cleaning device to deviate at multiple angles to enable the sand cleaning device to rotate in the deviated direction to remove the sand core.

[0011] As a further solution of the present invention: it also includes a shell flip unit, and the shell flip unit is used to keep the demoulding base in a horizontal working state or a tilted working state.

[0012] As a further solution of the present invention: the shell flip unit includes connecting rod one, connecting rod two and connecting rod three, the connecting rod one is rotatably connected to the left side of the bracket, and is fixedly connected to one end of the hydraulic push rod in the middle position, the telescopic end of the hydraulic push rod is connected to the connecting rod two, the connecting rod one is connected to both ends of the connecting rod two respectively through the connecting rod two, and the inclined bottom end of the connecting rod one is fixedly connected to the two ends of the connecting rod two respectively, the inclined top end of the connecting rod one is rotatably connected to the demoulding base through a fixing pin, the connecting rod three is rotatably connected to the right side of the bracket, and the two ends of the connecting rod three are rotatably connected to the demoulding base respectively.

[0013] As a further solution of the present invention: the elephant trunk-like sand cleaning unit includes a motor fixing plate that is detachably connected to one end of the guide rail fastening seat, and the other end of the guide rail fastening seat is detachably connected to the flared end of the conical cylinder, and four motors are evenly distributed at equal angles on the motor fixing plate, and the output shaft end of each motor is provided with a pulley, and one end of a transmission belt is wound around the pulley, and the transmission belt extends along the narrow end of the conical cylinder and is fixedly connected to a belt chuck, the sand cleaning device is provided on the belt chuck, and a plurality of connecting blocks are spaced between the belt chuck and the conical cylinder, and the connecting block is provided with a slot for the transmission belt to avoid, and two adjacent connecting blocks are connected by a multi-angle conversion component.

[0014] As a further solution of the present invention: the multi-angle transformation assembly includes a universal joint and a cross knot, which is respectively connected to one end of the two universal joints through the cross knot, and the other end of each universal joint is respectively connected to the connecting block.

[0015] As a further solution of the present invention: the sand cleaning device includes a scraping head, the scraping head is rotatably connected to the belt chuck, and a rotating motor for driving the scraping head to rotate is provided between the scraping head and the belt chuck.

[0016] As a further solution of the present invention: a plurality of raised portions for removing sand cores are evenly distributed on an end surface of the scraping head away from the belt chuck.

[0017] As a further solution of the present invention: the shell fastening unit includes a positioning hoop slidably connected to the demolding base, the positioning hoop is a U-shaped structure, and the top end of the positioning hoop is threadedly connected to a fastening bolt, and the tail end of the fastening bolt is fixedly connected to a fastening tile, and the sand core mold shell is pressed and fixed in a V-groove on the demolding base through the fastening tile.

[0018] As a further solution of the present invention: the moving unit includes a lower slide rail base and an upper slide rail base, the lower slide rail base is rotatably connected with a screw rod, the screw rod and the upper slide rail base are threadedly connected, and guide rods are symmetrically arranged on both sides of the screw rod, the guide rods and the upper slide rail base are guided and slidably connected, and the upper slide rail base is used to connect with the guide rail fastening base.

[0019] An operating method of a bionic elephant trunk type sand core mold demoulding device comprises the following steps:

[0020] Step 1: Maintain the demoulding base in a horizontal working state by using the shell flipping unit, and fix the sand core mold shell on the demoulding base by using the shell fastening unit;

[0021] Step 2: When cleaning the sand core, the moving unit drives the elephant trunk-like sand cleaning unit to approach the sand core mold shell until the sand cleaning device reaches the sand core cleaning station, and the elephant trunk-like sand cleaning unit drives the sand cleaning device to deflect at multiple angles, so that the sand cleaning device can rotate in the deflection direction to clean the sand core;

[0022] Step 3: After the sand core is removed, the moving unit is used to drive the elephant trunk-like sand cleaning unit away from the sand core mold shell, and the shell flipping unit is used to keep the demoulding base in an inclined working state, so as to facilitate the collection of the removed sand core in the inner cavity of the sand core mold shell by dumping and sliding.

[0023] As a further solution of the present invention:.

[0024] Beneficial effects of the present invention:

[0025] (1) The present application can simulate the flexible multi-angle displacement action of an elephant trunk through the elephant trunk-like sand cleaning unit, which can complete demoulding more accurately, avoid sand cleaning blind spots, reduce damage to the sand core, ensure the integrity and accuracy of the sand core, and thus improve the quality of castings;

[0026] (2) The present application adopts a structural design of an elephant trunk-like sand cleaning unit, which can quickly adapt to the operation and use of sand core membrane shells of different shapes and sizes, achieve rapid demoulding, reduce demoulding time, and thus improve demoulding quality;

[0027] (3) The present application can be used in conjunction with a water-soluble sand core mold demoulding design to make the multi-angle offset action of the present application to remove the sand core faster and more efficient, thereby helping to reduce energy consumption and material loss during the demoulding process, thereby reducing costs;

[0028] (4) The elephant trunk-like sand cleaning unit in the present application can drive the pulley to rotate the connecting block in all directions through the speed difference of the four motors or the free direction of up, down, left and right rotation to realize automatic operation. This special design is conducive to combining with automatic equipment, making the demoulding process easier to realize automatic production;

[0029] (5) The shell fastening unit used in the present application is easy to disassemble and is suitable for positioning shells of different sizes, which can improve the demoulding efficiency and reduce the demoulding time;

[0030] (6) The present application uses a shell flip unit to keep the base in a horizontal working state, so as to facilitate positioning of the sand core membrane shell and complete multi-angle offset actions in the feed direction to remove the sand core, so that the sand core removal range is wide and there is no dead angle for cleaning; after the sand core is removed, the shell flip unit is used to keep the base in an inclined working state, so that the removed sand core can be tilted and slid down for collection, thereby solving the problem of inconvenient cleaning of the removed sand core. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention will be further described below in conjunction with the accompanying drawings.

[0032] Figure 1 It is a structural schematic diagram of the bionic elephant trunk type sand core mold demoulding device of the present invention;

[0033] Figure 2 It is a schematic structural diagram of the bionic elephant trunk type sand cleaning unit of the bionic elephant trunk type sand core mold demoulding device of the present invention;

[0034] Figure 3 yes Figure 2 A schematic diagram of connections between adjacent connection blocks;

[0035] Figure 4 It is a schematic structural diagram of a shell fastening unit of a bionic elephant trunk type sand core mold demoulding device of the present invention;

[0036] Figure 5 It is a schematic diagram of the structure of the shell flip unit of the bionic elephant trunk type sand core mold demoulding device of the present invention;

[0037] Figure 6 It is a schematic diagram of the structure of the moving unit of the bionic elephant trunk type sand core mold demoulding device of the present invention.

[0038] In the figure: 1, motor fixing plate; 2, guide rail fastening seat; 3, conical cylinder; 400, elephant trunk sand cleaning unit; 5, sand cleaning device; 600, shell fastening unit; 7, demoulding base; 800, shell flip unit; 9, lower slide rail base; 10, upper slide rail base; 401, motor; 402, pulley; 403, transmission belt; 404, connecting block; 405, belt chuck; 406, sand scraping head; 407, universal joint; 408, cross knot; 601, fastening bolt; 602, fastening tile; 603, positioning hoop; 604, V-shaped groove; 801, connecting rod one; 802, fixing pin; 803, connecting rod one; 804, connecting rod two; 805, connecting rod three; 806, bracket; 807, connecting rod two; 808, hydraulic push rod; 900, screw rod; 901, guide rod. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] In the description of the present invention, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are 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 on the present invention; in the description of the present invention, the meaning of "multiple" and "several" is at least two, for example two, three, etc., unless otherwise clearly and specifically defined.

[0041] See also Figure 1 As shown, the present invention is a bionic elephant trunk type sand core mold demoulding device, comprising a shell fastening unit 600, a moving unit and a bionic elephant trunk type sand cleaning unit 400, wherein the shell fastening unit 600 is used to fix the sand core mold shell on the demoulding base 7; the moving unit is used to drive the bionic elephant trunk type sand cleaning unit 400 to slide toward or away from the sand core mold shell; the bionic elephant trunk type sand cleaning unit 400 is used to remove sand cores at multiple angles; wherein, one end of the bionic elephant trunk type sand cleaning unit 400 is connected to the moving unit through a guide rail fastening seat 2, and a sand cleaning device 5 is provided at the other end, and the bionic elephant trunk type sand cleaning unit 400 drives the sand cleaning device 5 to deflect at multiple angles, so as to realize that the sand cleaning device 5 rotates in the deflection direction to remove the sand core.

[0042] During the use of the demolding device of the present application, the shell fastening unit 600, the moving unit and the elephant trunk-like sand cleaning unit 400 are designed so that the sand core mold shell can be pre-positioned under the action of the shell fastening unit 600 to ensure the stability of the subsequent sand core removal. When the sand core is removed, it is convenient to drive the elephant trunk-like sand cleaning unit 400 to feed closer to the sand core mold shell through the moving unit, and under the action of the multi-angle offset action of the elephant trunk-like sand cleaning unit 400 itself, the sand cleaning device 5 can rotate in the offset direction to remove the sand core.

[0043] The present application can complete demolding more accurately and reduce damage to the sand core through the flexible multi-angle offset action of the bionic elephant trunk, thereby ensuring the integrity and precision of the sand core and improving the quality of the casting; in addition, the present application adopts the structural design of the bionic elephant trunk-type sand cleaning unit 400, which can quickly adapt to the operation and use of sand core membrane shells of different shapes and sizes, realize rapid demolding, reduce demolding time, and thus improve demolding quality.

[0044] It should be understood that the present application can be used in conjunction with a water-soluble sand core mold demolding design. The water-soluble sand core mold demolding mainly utilizes the thermal expansion and contraction characteristics of the water-soluble sand core mold. During the demolding process, the sand core membrane shell can be first heated to expand and then cooled to shrink, so that the molded shell can be easily separated from the sand core mold to obtain the desired product. When the water-soluble sand core mold demolding is used in conjunction with the present application, the multi-angle offset action of the present application is faster and more efficient in removing the sand core, thereby helping to reduce energy consumption and material loss during the demolding process.

[0045] like Figure 1 As shown, the demoulding device of the present application also includes a shell flip unit 800, which is used to keep the demoulding base 7 in a horizontal working state or a tilted working state; when the shell flip unit 800 is used to keep the demoulding base 7 in a horizontal working state, it is convenient to position the sand core membrane shell and complete multi-angle offset actions in the feed direction to remove the sand core, so that the sand core removal range is wide and there is no dead angle for cleaning; after the sand core is removed, the shell flip unit 800 is used to keep the demoulding base 7 in a tilted working state, so that the removed sand core can be tilted and slid down for collection, thereby solving the problem of inconvenient cleaning of the removed sand core.

[0046] In this specific implementation mode, Figure 5As shown, the shell flip unit 800 includes a connecting rod 1 801, a connecting rod 2 804 and a connecting rod 3 805. The connecting rod 1 801 is rotatably connected to the left side of the bracket 806, and is fixedly connected to one end of a hydraulic push rod 808 at the middle position. The telescopic end of the hydraulic push rod 808 is connected to the connecting rod 2 804. The two ends of the connecting rod 1 801 and the connecting rod 2 804 are respectively connected through the connecting rod 2 807, and the inclined bottom ends of the connecting rod 1 803 are respectively fixedly connected at the two ends of the connecting rod 2 804. The inclined top end of the connecting rod 1 803 is rotatably connected to the base through the fixing pin 802. The connecting rod 3 805 is rotatably connected to the right side of the bracket 806, and the two ends of the connecting rod 3 805 are respectively rotatably connected to the base.

[0047] When the shell flip unit 800 in the present application is in use, when the hydraulic push rod 808 is extended, the connecting rod 1 801, the connecting rod 2 804 and the connecting rod 2 807 on both sides form a rectangular frame, the hydraulic push rod 808 is extended to drive the connecting rod 2 804 to deflect downward, the connecting rod 2 804 drives the connecting rod 1 803 to slowly deflect upward, and the connecting rod 1 803 thereby deflects and lifts the base along the connecting rod 3 805 to keep the demolding base 7 in an inclined working state, thereby facilitating the inclined sliding and collection of the removed sand cores; when the hydraulic push rod 808 is shortened, it drives the connecting rod 2 804 to deflect upward, so that the connecting rod 1 803 slowly deflects downward, and the connecting rod 1 803 thereby deflects and lowers the base along the connecting rod 3 805 to keep the demolding base 7 in a horizontal working state.

[0048] It should be understood that the hydraulic push rod 808 between the connecting rod 1 801 and the connecting rod 2 804 in the shell flip unit 800 can be replaced with other power components. Other power components such as air pumps or electric push rods can complete the up and down deflection action of the connecting rod 2 804. The working principles are the same and will not be repeated here.

[0049] In this specific implementation mode, Figure 2 As shown, the elephant trunk-like sand cleaning unit 400 includes a motor fixing plate 1 detachably connected to one end of a guide rail fastening seat 2, and the other end of the guide rail fastening seat 2 is detachably connected to the flared end of the conical cylinder 3. Four motors 401 are evenly distributed at equal angles on the motor fixing plate 1, and the output shaft end of each motor 401 is provided with a pulley 402, and one end of a transmission belt 403 is wound around the pulley 402. The transmission belt 403 extends along the narrow end of the conical cylinder 3 and is fixedly connected to a belt chuck 405. The belt chuck 405 is provided with a sand cleaning device 5, and a plurality of connecting blocks 404 are arranged between the belt chuck 405 and the conical cylinder 3. The connecting block 404 is provided with a slot for the transmission belt 403 to avoid, and two adjacent connecting blocks 404 are connected by a multi-angle conversion component.

[0050] When the elephant trunk-like sand cleaning unit 400 in the present application is used, four motors 401 are designed to be evenly distributed at equal angles, and the four motors 401 are individually controlled to control their rotation speeds and rotation directions. The output end of each motor 401 is correspondingly wound with a transmission belt 403, and the transmission belt 403 corresponds to four transmission directions of up, down, left and right. Under the action of the motor 401 and the pulley 402, the transmission belt 403 is wound so that the belt chuck 405 connected to its tail end can be offset at multiple angles. The multiple-angle offset action can simulate the flexible action of the elephant trunk, and can move up, down, left and right, so as to drive the sand cleaning device 5 to rotate and scrape sand, achieve more accurate and more flexible demoulding, and reduce damage to the shell; in addition, the elephant trunk-like sand cleaning unit 400 can drive the pulley 402 to realize the rotation of the connecting block 404 in all directions through the speed difference of the four motors or the free direction design of up, down, left and right rotation, so as to realize the possibility of automated operation. This special design is conducive to combination with automated equipment, making the demoulding process easier to realize automated production.

[0051] When the transmission belt 403 is wound up and the belt chuck 405 can move at multiple angles, such as Figure 3 As shown, the multi-angle transformation component includes a universal joint 407 and a cross knot 408, which are respectively connected to one end of the two universal joints 407 through the cross knot 408, and the other end of each universal joint 407 is respectively connected to the connecting block 404; the universal joint 407 and the cross knot 408 are used in conjunction with each other to facilitate the freedom connection of the belt chuck 405 and the several connecting blocks 404 spaced apart between the conical cylinder 3, and in the process of differential winding of the transmission belt 403 along the several connecting blocks 404, it is ensured that the belt chuck 405 can stably move at multiple angles up, down, left, and right, thereby simulating the flexible movement of the elephant's trunk.

[0052] In this specific implementation mode, Figure 2 As shown, the sand cleaning device 5 includes a scraping head 406, which is rotatably connected to the belt chuck 405, and a rotating motor for driving the scraping head 406 to rotate is provided between the scraping head 406 and the belt chuck 405; a plurality of protrusions for removing sand cores are evenly distributed on one end surface of the scraping head 406 away from the belt chuck 405; during the multi-angle offset action of the sand cleaning device 5 following the belt chuck 405, it is convenient to drive the scraping head 406 to rotate in the offset direction to remove the sand core through the rotating motor, which is easy to operate, and the efficiency of sand core removal is accelerated by the designed multiple protrusions.

[0053] In this specific implementation mode, Figure 4As shown, the shell fastening unit 600 includes a positioning hoop 603 that is slidably connected to the demoulding base 7. The positioning hoop 603 is a U-shaped structure, and the top end of the positioning hoop 603 is threadedly connected to the fastening bolt 601, and the tail end of the fastening bolt 601 is fixedly connected to the fastening tile 602, and the sand core mold shell is pressed and fixed in the V-groove 604 on the demoulding base 7 by the fastening tile 602; when the shell fastening unit 600 in the present application is used, it is convenient to pre-place the sand core mold shell in the V-groove 604 of the demoulding base 7, and then slide the U-shaped positioning hoop 603 along the base to above the placement position of the sand core mold shell, and use the fastening bolt 601 to drive the fastening tile 602 to rotate and move downward, so as to clamp and position the sand core mold shell; the shell fastening unit 600 used in the present application is easy to disassemble and operate, and is suitable for positioning shells of different sizes, which can improve the demoulding efficiency and reduce the demoulding time.

[0054] In this specific implementation mode, Figure 6 As shown, the movable unit includes a lower slide rail base 9 and an upper slide rail base 10, the lower slide rail base 9 is rotatably connected with a screw rod 900, the screw rod 900 is threadedly connected to the upper slide rail base 10, and guide rods 901 are symmetrically arranged on both sides of the screw rod 900, the guide rods 901 are guided and slidably connected to the upper slide rail base 10, and the upper slide rail base 10 is used to connect with the guide rail fastening seat 2; when the movable unit in the present application is used, it is convenient to position and install the elephant trunk type sand cleaning unit 400 as a whole on the upper slide rail base 10 through the guide rail fastening seat 2, and when it is used for cleaning the sand core feeding, it is convenient to drive the screw rod 900 to rotate through the servo motor 401 (not marked in the figure) on the outer wall of the lower slide rail base 9, and the screw rod 900 is threadedly driven during the movement of the upper slide rail base 10, so as to move in the left and right feeding directions under the restriction of the guide rods 901 on both sides, so as to realize the movement of the elephant trunk type sand cleaning unit 400 towards or away from the sand core mold shell.

[0055] It should be understood that when the upper slide rail base 10 in the mobile unit is connected to the guide rail fastening base 2, the lower end surface of the guide rail fastening base 2 can be designed with a trapezoidal protrusion, and the upper end surface of the upper slide rail base 10 can be designed with a trapezoidal groove adapted to the trapezoidal protrusion, so that the guide rail fastening base 2 can be positioned along the front and rear directions of the upper slide rail base 10, thereby ensuring that the elephant trunk-like sand cleaning unit 400 can directly clean the sand cores with sand core mold shells of different sizes.

[0056] Combination Figures 1 to 6 As shown, the present invention also provides an operation method of a bionic elephant trunk type sand core mold demoulding device, comprising the following steps:

[0057] Step 1: The demoulding base 7 is kept in a horizontal working state by the shell flipping unit 800 , and the sand core mold shell is fixed on the demoulding base 7 by the shell fastening unit 600 .

[0058] Step 2: When cleaning the sand core, the moving unit drives the elephant trunk-like sand cleaning unit 400 to approach the sand core mold shell until the sand cleaning device 5 reaches the sand core cleaning station. The elephant trunk-like sand cleaning unit 400 drives the sand cleaning device 5 to deflect at multiple angles to enable the sand cleaning device 5 to rotate in the deflection direction to clean the sand core.

[0059] Step 3: After the sand core is removed, the elephant trunk-like sand cleaning unit 400 is driven away from the sand core mold shell by the moving unit, and the shell flipping unit 800 is used to keep the demoulding base 7 in an inclined working state, so as to facilitate the collection of the removed sand core in the inner cavity of the sand core mold shell by dumping and sliding.

[0060] During the use of the operating method of the present application, the shell fastening unit 600, the moving unit, the elephant trunk-like sand cleaning unit 400 and the shell flipping unit 800 are used in conjunction with each other through layout design. The working principles of each mechanism unit are the same as the above-mentioned demolding device, which will not be repeated here. The operating method of the present application is used for automated coordination and convenient operation, making the demolding process easier to realize automated production, and can complete the demolding more accurately, thereby improving the demolding quality.

[0061] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A bionic elephant trunk type sand core mold demoulding device, characterized in that: include: A shell fastening unit (600) is used to fix the sand core mold shell on the demoulding base (7); A moving unit, used for driving the elephant trunk-like sand cleaning unit (400) to slide in a direction close to or away from the sand core mold shell; An elephant trunk-like sand cleaning unit (400) is used to remove sand cores at multiple angles; One end of the elephant trunk-like sand cleaning unit (400) is connected to the mobile unit via a guide rail fastening seat (2), and the other end is provided with a sand cleaning device (5). The elephant trunk-like sand cleaning unit (400) drives the sand cleaning device (5) to deflect at multiple angles, so that the sand cleaning device (5) can rotate in the deflection direction to remove the sand core.

2. The bionic elephant trunk type sand core mold demoulding device according to claim 1 is characterized in that: It also comprises a shell flipping unit (800), and the shell flipping unit (800) is used to keep the demoulding base (7) in a horizontal working state or an inclined working state.

3. The bionic elephant trunk type sand core mold demoulding device according to claim 2 is characterized in that: The shell flip unit (800) comprises a connecting rod one (801), a connecting rod two (804) and a connecting rod three (805); the connecting rod one (801) is rotatably connected to the left side of the bracket (806); the middle position is fixedly connected to one end of a hydraulic push rod (808); the telescopic end of the hydraulic push rod (808) is connected to the connecting rod two (804); the connecting rod one (801) and the two ends of the connecting rod two (804) are respectively connected through a connecting rod two (807); and the two ends of the connecting rod two (804) are respectively fixedly connected to the inclined bottom end of the connecting rod one (803); the inclined top end of the connecting rod one (803) is rotatably connected to the demoulding base (7) through a fixing pin (802); the connecting rod three (805) is rotatably connected to the right side of the bracket (806); and the two ends of the connecting rod three (805) are respectively rotatably connected to the demoulding base (7).

4. The bionic elephant trunk type sand core mold demoulding device according to claim 1, characterized in that: The elephant trunk-like sand cleaning unit (400) comprises a motor fixing plate (1) which is detachably connected to one end of the guide rail fastening seat (2), and the other end of the guide rail fastening seat (2) is detachably connected to the flared end of the conical cylinder (3). Four motors (401) are evenly arranged at equal angles on the motor fixing plate (1), and a pulley (402) is provided at the output shaft end of each motor (401). One end of a transmission belt (403) is wound around the pulley (402). The driving belt (403) extends out along the narrow end of the conical cylinder (3) and is fixedly connected to the belt chuck (405), the belt chuck (405) is provided with the sand cleaning device (5), and a plurality of connecting blocks (404) are arranged between the belt chuck (405) and the conical cylinder (3), and the connecting blocks (404) are provided with grooves for the driving belt (403) to avoid, and two adjacent connecting blocks (404) are connected by a multi-angle conversion component.

5. The bionic elephant trunk type sand core mold demoulding device according to claim 4 is characterized in that: The multi-angle transformation assembly comprises a universal joint (407) and a cross knot (408), and is respectively connected to one end of the two universal joints (407) through the cross knot (408), and the other end of each universal joint (407) is respectively connected to the connecting block (404).

6. The bionic elephant trunk type sand core mold demoulding device according to claim 4, characterized in that: The sand cleaning device (5) comprises a sand scraping head (406), the sand scraping head (406) is rotatably connected to the belt chuck (405), and a rotating motor for driving the sand scraping head (406) to rotate is provided between the sand scraping head (406) and the belt chuck (405).

7. The bionic elephant trunk type sand core mold demoulding device according to claim 6, characterized in that: A plurality of protrusions for removing sand cores are evenly distributed on an end surface of the scraping head (406) away from the belt chuck (405).

8. The bionic elephant trunk type sand core mold demoulding device according to claim 1, characterized in that: The shell fastening unit (600) includes a positioning hoop (603) slidably connected to the demoulding base (7), the positioning hoop (603) is a U-shaped structure, and the top end of the positioning hoop (603) is threadedly connected to the fastening bolt (601), and the tail end of the fastening bolt (601) is fixedly connected to the fastening tile (602), and the sand core mold shell is pressed and fixed in the V-shaped groove (604) on the demoulding base (7) through the fastening tile (602).

9. The bionic elephant trunk type sand core mold demoulding device according to claim 1, characterized in that: The mobile unit comprises a lower slide rail base (9) and an upper slide rail base (10); a screw rod (900) is rotatably connected to the lower slide rail base (9); the screw rod (900) and the upper slide rail base (10) are threadedly connected; guide rods (901) are symmetrically arranged on both sides of the screw rod (900); the guide rods (901) and the upper slide rail base (10) are connected in a guiding sliding manner; and the upper slide rail base (10) is used to be connected to the guide rail fastening seat (2).

10. The method for operating the bionic elephant trunk type sand core mold demoulding device according to claim 2 is characterized in that: The steps include: Step 1: Maintain the demoulding base (7) in a horizontal working state by using the shell flipping unit (800), and fix the sand core mold shell on the demoulding base (7) by using the shell fastening unit (600); Step 2: When cleaning the sand core, the moving unit drives the elephant trunk-like sand cleaning unit (400) to approach the sand core mold shell until the sand cleaning device (5) reaches the sand core cleaning station, and the elephant trunk-like sand cleaning unit (400) drives the sand cleaning device (5) to deflect at multiple angles, so that the sand cleaning device (5) can rotate in the deflection direction to clean the sand core; Step 3: After the sand core is removed, the moving unit drives the elephant trunk-like sand cleaning unit (400) away from the sand core mold shell, and the shell flipping unit (800) is used to keep the demoulding base (7) in an inclined working state, so as to facilitate the removal of the sand core in the inner cavity of the sand core mold shell to be tilted and collected.

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