A fully automatic wet clay sand core making machine

Abstract

The present invention relates to the technical field of wet clay sand core making, and specifically to a fully automatic wet clay sand core making machine, comprising a workbench, a support plate being installed on the upper surface of the workbench; a fixed plate being installed at the center position of the upper surface of the workbench; a uniformly distributed sliding rod is fixedly installed on the side of the fixed plate away from the workbench; a movable plate is slidably connected to the side of the sliding rod away from the fixed plate; a first cylinder is fixedly installed on the upper surface of the support plate; an output end of the first cylinder passes through the support plate and is fixedly connected to the upper surface of the movable plate; a sand core box is installed on the opposite side of the movable plate and the fixed plate; the sand core box is detachably connected to the movable plate and the fixed plate through a fixing device; a spraying device is connected through the center position of the fixed plate, and the present invention arranges a circulation pipe, utilizes airflow to drive the demoulding agent to evenly spray the inner cavity of the sand core box, and utilizes the circulation of airflow to recycle the excess demoulding agent, thereby enhancing the applicability of the present application.

Description

Technical Field

[0001] The invention relates to the technical field of wet clay sand core making, in particular to a full-automatic wet clay sand core making machine. Background Art

[0002] Clay sand is mainly composed of raw sand, clay, additives and water. During the molding process, the molding sand is formed under the action of external force and reaches a certain degree of compactness to become a sand core. Clay sand is mainly used as an additive to molding sand and core sand for casting and non-ferrous metal castings to increase wet strength and improve molding performance.

[0003] In the process of implementing the present invention, it is found that at least the following problems exist in the prior art and have not been solved:

[0004] 1. The existing core making machine also uses many screws to fix some particularly small sand core boxes when replacing them. It is very time-consuming to disassemble and assemble them. Sometimes the screws are difficult to turn because of corrosion, and they are even connected to the sand core box, making them impossible to disassemble. The sand core box needs to be destroyed before it can be disassembled.

[0005] 2. Every time before processing the sand core, some release agent will be sprayed into the sand core box. The existing release agent spraying is often done manually, and the uneven spraying can easily cause a large amount of release agent waste. The operator is prone to fatigue after long-term spraying work, which reduces production capacity.

[0006] Therefore, a fully automatic wet clay sand core making machine is proposed. Summary of the invention

[0007] The purpose of the present invention is to provide a method to solve the problems raised in the above background technology.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a fully automatic wet clay sand core making machine, comprising a workbench, the upper surface of the workbench is fixedly connected to a support plate through a column; a fixed plate is installed at the center of the upper surface of the workbench; evenly distributed sliding rods are fixedly installed on the side of the fixed plate away from the workbench; a movable plate is slidably connected to the side of the sliding rod away from the fixed plate; a first cylinder is fixedly installed on the upper surface of the support plate; the output end of the first cylinder passes through the support plate and is fixedly connected to the upper surface of the movable plate; a sand core box is installed on the opposite side of the movable plate and the fixed plate; the sand core box is detachably connected to the movable plate and the fixed plate through a fixing device; a spraying device is connected through the center of the fixed plate for spraying a release agent into the sand core box;

[0009] The fixing device includes a U-shaped groove, a telescopic head, a fixing rod, an iron ring, and a spring; a cylindrical rod is fixedly installed on the opposite side of the movable plate and the fixed plate; a U-shaped groove is provided on the side of the cylindrical rod close to the top position; an L-shaped groove is provided on the sand core box corresponding to the cylindrical rod; the cylindrical rod extends into the L-shaped groove; a fixing rod is elastically installed on the end of the L-shaped groove away from the cylindrical rod through a spring; the fixing rod extends into the L-shaped groove and the fixing rod is fixedly connected to the telescopic head at one end of the fixing rod located in the L-shaped groove; in the initial state, the telescopic head is fitly connected to the U-shaped groove; an iron ring is hinged on the end of the fixing rod away from the telescopic head.

[0010] Preferably, the spraying device includes a connecting rod, an air pipe, a top cap, and an atomizing nozzle; the fixing plate is connected with a connecting rod, and a plurality of air pipes are connected with the connecting rod, a top cap is fixedly installed on the top of the connecting rod, and a plurality of atomizing nozzles are opened on the surface of the top cap, and the atomizing nozzle is connected with the air pipe; a positioning hole is opened in the sand core box corresponding to the connecting rod; the connecting rod extends into the positioning hole; a filter plate is clamped on the side of the positioning hole away from the connecting rod.

[0011] Preferably, one end of the air pipe is connected to a release agent tank, and an air compressor is fixedly installed at a position on one side below the workbench, and the air compressor is used to provide power for the release agent tank.

[0012] Preferably, a hole groove is formed at one end of the fixing rod close to the telescopic head.

[0013] Preferably, the top end and the telescopic head of the columnar rod are both designed to be U-shaped.

[0014] Preferably, the fixed plate is fixedly connected to a uniformly distributed guide tube on one side close to the movable plate; a clamp is slidably connected inside the guide tube; the cross section of the clamp is designed in an "L" shape; one end of the clamp located inside the guide tube is fixedly connected to an extrusion bag; the other end of the extrusion bag is fixedly connected to the inner wall of the guide tube; the outer wall of the slide rod is sleeved with a telescopic tube; a compression bag is installed inside the telescopic tube; the compression bag and the extrusion bag are designed to be connected through a catheter;

[0015] Preferably, a pressure sensing switch is installed on the side of the clamping plate close to the sand core box; the pressure sensing switch is used to start the air compressor; the output end of the air compressor is connected to the inner cavity of the connecting rod; a circulation pipe is fixedly connected to the side of the top cap close to the inner cavity of the sand core box; the circulation pipe passes through the connecting rod and extends to the inside of the release agent tank; the circulation pipe and the air pipe are respectively located at the top and bottom openings of the release agent tank; the circulation pipe and the air pipe are both unidirectionally conductive at one end away from the release agent tank, and the conducting direction of the circulation pipe is away from the inner cavity of the sand core box, and the conducting direction of the air pipe is toward the top cap.

[0016] Preferably, the atomizing nozzle is designed to be inclined on the top cap surface, and the inclination direction is toward the inner wall of the sand core box;

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention closely fits the groove on the lower surface of the sand core box through the cylindrical rod, presses the sand core box to make the telescopic head enter the U-shaped groove and get stuck, so that the sand core box fixing plate is tightly fixed, and the sand core box can be fixed without screws, avoiding the problem of cumbersome screwing. When the sand core box is to be disassembled, it is only necessary to pull the iron ring to separate the telescopic head from the U-shaped groove, and then the sand core box can be removed, which makes it easy to disassemble the sand core box, speeds up the replacement of the sand core box, and improves work efficiency.

[0019] 2. The present invention inflates the release agent tube so that the release agent in the release agent tank flows into the air pipe, and finally the release agent is sprayed out at the atomizing nozzle and evenly sprayed in the sand core box. Because the atomizing nozzle is used at the nozzle, the spraying effect is good and uniform, which avoids the unevenness and waste of manual spraying, and also liberates manpower to avoid the fatigue of operators working for a long time.

[0020] 3. The present invention sets a circulation pipe, uses airflow to drive the release agent to spray the inner cavity of the sand core box evenly, and uses the circulation of airflow to recover the excess release agent, which not only effectively reduces the labor intensity of the release agent coating process, but also effectively improves the uniformity of the release agent spraying in the sand core box, and can also save the use of release agent and reduce production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 is a cross-sectional view of a fixing device of the present invention;

[0023] Figure 3 It is an enlarged view of point A of the present invention;

[0024] Figure 4 It is an enlarged view of B of the present invention;

[0025] Figure 5 It is a cross-sectional view of the fixing rod of the present invention.

[0026] In the figure: 1. workbench; 2. fixed plate; 21. guide tube; 22. clamping plate; 23. extrusion bag; 24. pressure sensing switch; 25. circulation pipe; 3. sand core box; 4. moving plate; 5. first cylinder; 6. sliding rod; 61. telescopic tube; 62. compression bag; 7. cylindrical rod; 8. fixing device; 9. spraying device; 10. hole groove; 81. U-shaped groove; 82. telescopic head; 83. fixing rod; 84. iron ring; 85. spring; 91. connecting rod; 93. air pipe; 94. top cap; 95. atomizing nozzle; 96. release agent tank. DETAILED DESCRIPTION

[0027] 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.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] See also Figures 1 to 5 , the present invention provides a technical solution:

[0031] A fully automatic wet clay sand core making machine, such as Figures 1 to 3 and Figure 5As shown, it includes a workbench 1, which is characterized in that: the upper surface of the workbench 1 is fixedly connected with a support plate through a column; a fixed plate 2 is installed at the center of the upper surface of the workbench 1; the fixed plate 2 is fixedly installed with evenly distributed sliding rods 6 on the side away from the workbench; the sliding rods 6 are slidably connected with a movable plate 4 on the side away from the fixed plate; a first cylinder 5 is fixedly installed on the upper surface of the support plate; the output end of the first cylinder 5 passes through the support plate and is fixedly connected to the upper surface of the movable plate 4; a sand core box 3 is installed on the opposite side of the movable plate 4 and the fixed plate 2; the sand core box 3 It is detachably connected to the movable plate 4 and the fixed plate 2 through a fixing device 8; a spraying device 9 is connected through the center of the fixed plate 2 for spraying a demoulding agent into the sand core box 3; the fixing device 8 comprises a U-shaped groove 81, a telescopic head 82, a fixing rod 83, an iron ring 84 and a spring 85; a U-shaped groove 81 is provided on one side of the cylindrical rod 7 near the top position, a telescopic head 82 is fitted in the U-shaped groove 81, a fixing rod 83 is fixedly installed at the center position of one end of the telescopic head 82, and a spring 85 is provided on the outer circumferential surface of the fixing rod 83 near one end.

[0032] By adopting the above technical solution, when the sand core box 3 needs to be installed, the groove on the lower surface of the sand core box 3 is aligned with the cylindrical rod 7 and slides downward. The cylindrical rod 7 is tightly fitted with the groove on the lower surface of the sand core box 3. The top position of the cylindrical rod 7 will support the telescopic head 82. Continuously pressing down the top of the cylindrical rod 7 of the sand core box 3 will continuously push the telescopic head 82, so that the telescopic head 82 pushes the fixed rod 83, thereby driving the spring 85 on the fixed rod 83 to deform. When the U-shaped groove 81 and the telescopic head 82 are in a horizontal position, the telescopic head 82 will enter the U-shaped groove 81 because the spring 85 needs to restore the deformation, so that the sand core box 3 is tightly fixed to the fixing plate 2, so that the sand core box 3 can be fixed without screws, avoiding the cumbersome screwing problem. When the sand core box 3 is to be disassembled, it is only necessary to pull the iron ring 84 to make the hole groove 10 on the fixing rod 83 leak out, and then find a thin cylindrical iron rod to insert into the hole groove 10. At this time, the fixing rod 83 pulls the telescopic head 82 to separate from the U-shaped groove 81, and the operator can pick up the sand core box 3 to separate it from the fixing plate 2 and then remove the thin cylindrical iron rod in the hole groove 10, so that the sand core box 3 can be easily disassembled, avoiding the cumbersome screwing problem, speeding up the replacement speed of the sand core box 3 and improving the work efficiency.

[0033] Specifically, Figure 2As shown, the spraying device 9 includes a connecting rod 91, an air pipe 93, a top cap 94, and an atomizing nozzle 95; the fixing plate 2 is connected with the connecting rod 91, and the connecting rod 91 is connected with a plurality of air pipes 93, a top cap 94 is fixedly installed on the top of the connecting rod 91, and a plurality of atomizing nozzles 95 are opened on the surface of the top cap 94, and the atomizing nozzles 95 are connected with the air pipe 93; the sand core box 3 is provided with a positioning hole corresponding to the connecting rod 91; the connecting rod 91 extends into the positioning hole; a filter plate is clamped on the side of the positioning hole away from the connecting rod, one end of the air pipe 93 is connected to a release agent tank 96, and an air compressor is fixedly installed at a position on one side below the workbench 1, and the air compressor is used to provide power for the release agent tank 96.

[0034] By adopting the above technical solution, the air compressor continuously inputs gas into the connecting rod 91, so that the release agent in the release agent tank 96 is drained into the air pipe 93, and the release agent is finally sprayed out at the atomizing nozzle 95 and evenly sprayed in the sand core box 3. The air compressor provides a continuous power source for spraying the release agent.

[0035] Specifically, Figure 5 As shown, a hole slot 10 is formed at one end of the fixing rod 83 close to the telescopic head 82 .

[0036] By adopting the above technical solution, because the sand core box 3 is equipped with a fixing device 8 near the corner, the iron ring 84 is pulled to expose the hole groove 10, and a thin rod is inserted into the hole groove 10 to separate the telescopic head 82 from the U-shaped groove 81, and then the iron ring 84 in another fixing device 8 is pulled to perform the same operation, until the telescopic heads 82 and U-shaped grooves 81 in the four groups of fixing devices 8 are separated, and the sand core box 3 can be removed. Although the sand core box 3 can be removed by pulling the iron rings 84 on the four groups of fixing devices 8 at the same time, it requires multiple people to operate. Inserting a thin rod into the hole groove 10 realizes single-person operation and disassembly.

[0037] Specifically, Figure 3 As shown, the top end of the columnar rod 7 and the telescopic head 82 are both designed to be U-shaped.

[0038] By adopting the above technical solution, the top of the cylindrical rod 7 and the telescopic head 82 are both designed in a U shape. This is because when the cylindrical rod 7 reaches the telescopic head 82, the contact area between the two is small and it is easy to slide, so that the telescopic head 82 can easily enter the U-shaped groove 81. The telescopic head 82 adopts a U-shaped design in order to be tightly combined with the inside of the U-shaped groove 81, so that the sand core box 3 is fixed more tightly.

[0039] Specifically, the fixed plate 2 is fixedly connected to a side close to the movable plate 4 with uniformly distributed guide tubes 21; a clamping plate 22 is slidably connected inside the guide tube 21; the cross section of the clamping plate 22 is designed in an "L" shape; one end of the clamping plate 22 located inside the guide tube 21 is fixedly connected to an extrusion bag 23; the other end of the extrusion bag 23 is fixedly connected to the inner wall of the guide tube 21; the outer wall of the slide rod 6 is sleeved with a telescopic tube 61; a compression bag 62 is installed inside the telescopic tube 61; the compression bag 62 and the extrusion bag 23 are designed to be connected through a catheter;

[0040] During operation, when the movable plate 4 is driven by the first cylinder to move toward the fixed plate 2, the slide bar 6 is moved toward the inner cavity of the telescopic tube 61, and the compression bag 62 located in the inner cavity of the telescopic tube 61 is squeezed. The squeezed compression bag 62 transmits the internal gas to the squeezing bag 23 through the conduit, and the squeezing bag 23 located in the guide tube 21 is inflated. The inflated squeezing bag 23 squeezes the clamping plate 22 in the guide tube 21, and the clamping plate 22 slides in the guide tube 21 toward the sand core box 3, until the clamping plates 22 located on both sides of the sand core box 3 clamp the sand core box 3, thereby effectively enhancing the fixing effect of the bottom sand core box 3 and enhancing the stability of the sand core box 3.

[0041] Specifically, a pressure sensing switch 24 is installed on the side of the clamping plate 22 close to the sand core box 3; the pressure sensing switch 24 is used to start the air compressor; the output end of the air compressor is connected to the inner cavity of the connecting rod 91; the top cap 94 is fixedly connected to a circulation pipe 25 on the side close to the inner cavity of the sand core box 3; the circulation pipe 25 penetrates the connecting rod 91 and extends to the inside of the release agent tank 96; the circulation pipe 25 and the air pipe 93 are respectively located at the top and bottom openings of the release agent tank 96; the circulation pipe 25 and the air pipe 93 are both unidirectionally conductive at one end away from the release agent tank 96, and the circulation direction of the circulation pipe 25 is away from the inner cavity of the sand core box 3, and the circulation direction of the air pipe 93 is toward the top cap 94;

[0042] During operation, when the clamping plate 22 is squeezed by the squeezing bag 23 and squeezed into contact with the side wall of the sand core box 3, the pressure sensing switch 24 installed on the clamping plate 22 is subjected to pressure, and then the air compressor is controlled to start through an electrical signal. After the air compressor is started, the airflow is stably delivered to the inner cavity of the connecting rod 91, and the airflow is guided through the inner cavity of the connecting rod 91, and finally enters the inner cavity of the sand core box 3, and cleans the inner cavity of the sand core box 3 to avoid the residual molding sand, impurities, etc. in the inner cavity of the sand core box 3 from staying, which has a negative impact on the re-manufacturing of the sand core. At the same time, as the movable plate 4 continues to move closer to the fixed plate 2, when the sand core box 3 on the movable plate 4 is closed with the sand core box 3 on the fixed plate 2, the airflow is guided by the connecting rod 91. The airflow entering the sand core box 3 cannot diffuse to the outside, which leads to an increase in the air pressure in the sand core box 3. The increased air pressure eventually forces the circulation pipe 25 to be opened, and enters the release agent tank 96 through the circulation pipe 25. The pressure in the release agent tank 96 increases, causing the release agent to flow along the air pipe 93. When the release agent moves to the end of the air pipe 93, the air pipe 93 is opened under the action of pressure, and then the release agent enters the inner cavity of the connecting rod 91, and under the entrainment of the air flow, it is sprayed into the inner cavity of the sand core box 3 through the atomizing nozzle 95 on the top cap 94. At the same time, during the spraying process, the excess release agent gathers and follows the air flow through the circulation pipe 25 to flow into the release agent tank 96 again, thereby reducing the waste of release agent.

[0043] Specifically, the atomizing nozzle 95 is designed to be inclined on the surface of the top cap 94, and the inclination direction is toward the inner wall of the sand core box 3;

[0044] During operation, the airflow mixed with the release agent is sprayed toward the inner wall of the sand core box 3 through the atomizing nozzle 95, and then cooperates with the circulation pipe 25 located in the middle of the top cap 94 to form a complete airflow direction in the inner cavity of the sand core box 3, thereby effectively enhancing the uniform coating of the release agent on the inner wall of the sand core box 3;

[0045] Working principle: when the sand core box 3 needs to be installed, align the groove on the lower surface of the sand core box 3 with the cylindrical rod 7 and slide it downward. The cylindrical rod 7 fits tightly with the groove on the lower surface of the sand core box 3, and the top position of the cylindrical rod 7 will support the telescopic head 82. Continuously pressing down the top of the cylindrical rod 7 of the sand core box 3 will continuously push the telescopic head 82, so that the telescopic head 82 pushes the fixed rod 83, thereby driving the spring 85 on the fixed rod 83 to deform. When the U-shaped groove 81 and the telescopic head 82 are in a horizontal position, the telescopic head 82 will be driven by the spring 85 to restore its deformation and enter the U-shaped groove 81 to get stuck, so that the sand core box 3 and the fixed plate 2 are tightly fixed, so that the sand core box 3 can be fixed without screws, avoiding the cumbersome problem of screwing. When the sand core box 3 is to be disassembled When the moving plate 4 is driven by the first cylinder, it moves toward the fixed plate 2, thereby causing the sliding rod 6 to move toward the inner cavity of the telescopic tube 61, thereby causing the compression bag 62 in the inner cavity of the telescopic tube 61 to be squeezed. The squeezed compression bag 62 transmits the internal gas to the inner cavity of the telescopic tube 61 through the conduit. The extrusion bag 23 is inflated, and the extrusion bag 23 located inside the guide tube 21 is inflated. The inflated extrusion bag 23 squeezes the clamping plate 22 in the guide tube 21, and the clamping plate 22 slides in the guide tube 21 toward the sand core box 3, until the clamping plates 22 located on both sides of the sand core box 3 clamp the sand core box 3. The pressure sensing switch 24 installed on the clamping plate 22 is subjected to pressure, and then the air compressor is controlled to start through an electrical signal. After the air compressor is started, a steady airflow is delivered to the inner cavity of the connecting rod 91. The airflow is guided through the inner cavity of the connecting rod 91 and finally enters the inner cavity of the sand core box 3, and the inner cavity of the sand core box 3 is cleaned to avoid the residual molding sand, impurities, etc. in the inner cavity of the sand core box 3 from staying, thereby re-making the sand core. There is a negative impact on the structure. At the same time, as the movable plate 4 continues to move closer to the fixed plate 2, when the sand core box 3 on the movable plate 4 is closed with the sand core box 3 on the fixed plate 2, the airflow entering the sand core box 3 through the connecting rod 91 cannot diffuse to the outside, which leads to an increase in the air pressure in the sand core box 3. The increased air pressure eventually forces the circulation pipe 25 to be turned on, and enters the release agent tank 96 through the circulation pipe 25. The pressure in the release agent tank 96 increases, causing the release agent to flow along the air pipe 93. When the release agent moves to the end of the air pipe 93, the air pipe 93 is turned on under the action of pressure, and then the release agent enters the inner cavity of the connecting rod 91, and is sprayed into the inner cavity of the sand core box 3 through the atomizing nozzle 95 on the top cap 94 under the action of the airflow.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fully automatic wet clay sand core making machine, comprising a workbench (1), characterized in that: The upper surface of the workbench (1) is fixedly connected to a support plate via a column; a fixed plate (2) is installed at the center of the upper surface of the workbench (1); a uniformly distributed sliding rod (6) is fixedly installed on the side of the fixed plate (2) away from the workbench; the sliding rod (6) is slidably connected to a movable plate (4) on the side away from the fixed plate; a first cylinder (5) is fixedly installed on the upper surface of the support plate; the output end of the first cylinder (5) passes through the support plate and is fixedly connected to the upper surface of the movable plate (4); a sand core box (3) is installed on the opposite side of the movable plate (4) and the fixed plate (2); the sand core box (3) is detachably connected to the movable plate (4) and the fixed plate (2) via a fixing device (8); a spraying device (9) is connected through the center of the fixed plate (2) for spraying a release agent into the sand core box (3); The fixing device (8) comprises a U-shaped groove (81), a telescopic head (82), a fixing rod (83), an iron ring (84), and a spring (85); a columnar rod (7) is fixedly installed on one side of the movable plate (4) and the fixing plate (2); a U-shaped groove (81) is provided on one side of the columnar rod (7) close to the top position; an L-shaped groove is provided on each side of the sand core box (3) corresponding to the columnar rod (7); the columnar rod (7) extends into the L-shaped groove; a fixing rod (83) is elastically installed at one end of the L-shaped groove away from the columnar rod (7) through a spring (85); the fixing rod (83) extends into the L-shaped groove and one end of the fixing rod (83) located in the L-shaped groove is fixedly connected to the telescopic head (82); in an initial state, the telescopic head (82) is closely connected to the U-shaped groove (81); an iron ring (84) is hingedly connected to one end of the fixing rod (83) away from the telescopic head (82); A hole groove (10) is formed at one end of the fixing rod (83) close to the telescopic head (82); the top end of the columnar rod (7) and the telescopic head (82) are both designed to be U-shaped; The spraying device (9) comprises a connecting rod (91), an air pipe (93), a top cap (94), and an atomizing nozzle (95); the fixing plate (2) is connected with a connecting rod (91), a plurality of air pipes (93) are connected with the connecting rod (91), a top cap (94) is fixedly installed on the top of the connecting rod (91), a plurality of atomizing nozzles (95) are opened on the surface of the top cap (94), and the atomizing nozzles (95) are connected with the air pipe (93); the sand core box (3) is provided with a positioning hole corresponding to the connecting rod (91); the connecting rod (91) extends into the positioning hole; a filter plate is clamped on the side of the positioning hole away from the connecting rod; one end of the air pipe (93) is connected with a demoulding agent tank (96), and an air compressor is fixedly installed on one side below the workbench (1), and the air compressor is used to provide power for the demoulding agent tank (96); The fixed plate (2) is fixedly connected to a side of the movable plate (4) with uniformly distributed guide tubes (21); a clamping plate (22) is slidably connected inside the guide tube (21); the cross section of the clamping plate (22) is designed to be "L" shaped; one end of the clamping plate (22) located inside the guide tube (21) is fixedly connected to an extrusion bag (23); the other end of the extrusion bag (23) is fixedly connected to the inner wall of the guide tube (21); the outer wall of the sliding rod (6) is sleeved with a telescopic tube (61); a compression bag (62) is installed inside the telescopic tube (61); the compression bag (62) and the extrusion bag (23) are designed to be in communication with each other through a conduit.

2. A fully automatic wet clay sand core making machine according to claim 1, characterized in that: A pressure sensing switch (24) is installed on the side of the clamping plate (22) close to the sand core box (3); the pressure sensing switch (24) is used to start the air compressor; the output end of the air compressor is in conduction with the inner cavity of the connecting rod (91); a circulation pipe (25) is fixedly connected to the side of the top cap (94) close to the inner cavity of the sand core box (3); the circulation pipe (25) passes through the connecting rod (91) and extends to the inside of the demoulding agent tank (96); the circulation pipe (25) and the air pipe (93) are respectively located at the top and bottom of the demoulding agent tank (96) with openings; the circulation pipe (25) and the air pipe (93) are both unidirectionally conductive at one end away from the demoulding agent tank (96), and the conducting direction of the circulation pipe (25) is away from the inner cavity of the sand core box (3), while the conducting direction of the air pipe (93) is toward the top cap (94).

3. The fully automatic wet clay sand core making machine according to claim 1, characterized in that: The atomizing nozzle (95) is designed to be inclined on the surface of the top cap (94), and the inclination direction is toward the inner wall of the sand core box (3).

Images