CN116372114A - Valve mould is produced through sand casting - Google Patents

Abstract

The invention provides a valve mold produced by sand casting, comprising a casting port and two casting molds, the two casting molds are set up and down, and used in symmetric cooperation, the casting port is set on the top of the casting mold at the top, The four corners of the casting mold are provided with buckle structures, one side of the buckle structure is provided with a locking structure, the surface of the locking structure is engaged with the surface of the casting mold, and the bottom of the casting mouth is provided with four There is a lock positioning structure, and the two ends of the lock positioning structure are respectively used in cooperation with the surfaces of the two casting molds. The present invention solves the problem that the existing sand casting mold is easily deformed and difficult to take out the cast product by setting a casting port, a casting mold, a buckle structure, a locking structure and a buckle positioning structure.

Description

A valve mold produced by sand casting

technical field

The invention relates to the technical field of sand casting molds, in particular to a valve mold produced by sand casting.

Background technique

Sand casting—a casting method in which castings are produced in sand molds. Steel, iron and most non-ferrous alloy castings can be obtained by sand casting. Because the molding materials used in sand casting are cheap and easy to obtain, the casting molds are easy to manufacture. It can be adapted to piece production, batch production and mass production. It has been the basic process in casting production for a long time.

The production and processing of valves requires the use of sand casting molds. In the existing technology, there are two problems in the use of sand casting molds. The sand casting molds that can be disassembled have poor stability, and the sand casting molds that cannot be disassembled are inconvenient to place. When the sand casting mold is cast, the mold sand is easy to deform the outer plate of the mold due to the force. At the same time, it is not convenient to take the cast product out of the sand casting mold after the casting is completed. Long-term use will The casting efficiency of the valve is reduced.

Contents of the invention

In view of the deficiencies in the prior art, the purpose of the present invention is to provide a valve mold produced by sand casting, which can facilitate the removal of the finished product and improve the stability of the sand casting mold, so as to solve the problem that the existing sand casting mold is easy to deform and difficult The problem of taking out the cast finished product.

In order to achieve the above object, the present invention is achieved through the following technical solutions: a valve mold produced by sand casting, including a casting port and two casting molds, the two casting molds are set up and down, and used in symmetric cooperation, so The casting port is opened on the top of the casting mold at the top;

The four corners of the casting mold are all provided with a buckle structure, and one side of the buckle structure is provided with a locking structure, and the surface of the locking structure is engaged with the surface of the casting mold;

The bottom of the casting port is provided with four lock positioning structures, and the two ends of the lock positioning structures are respectively used in cooperation with the surfaces of the two casting molds.

Further, the casting mold includes a mounting plate, four clamping plates are arranged on the top of the mounting plate, and both ends of two adjacent clamping plates are clamped to each other, and the top of the mounting plate is provided with Four limiting plates, the bottoms of the four limiting plates are fixedly connected with the top of the mounting plate, the surfaces of the four limiting plates are respectively used in cooperation with one end of the four clamping plates, and the casting port is opened On the top of the mounting plate at the top, the buckle structure is located at one end of the clamping plate, the side of the locking structure close to the clamping plate is fixedly connected with the surface of the clamping plate, and the locking structure is close to one side of the mounting plate The two ends of the lock positioning structure are respectively used in conjunction with the upper and lower clamping plates, and the surfaces of the mounting plate and the clamping plate are provided with cooling jacks, and the cooling jacks The number is several and is evenly distributed.

Further, the buckle structure includes a first clamping block, a first fixing block is provided on one side of the first clamping block, and a side of the first fixing block close to the clamping plate is fixed to one end of the clamping plate The side of the first block close to the mounting plate is fixedly connected with the first transmission rod, the side of the first transmission rod away from the first block is fixedly connected with the first abutment block, and the locking structure covers It is arranged on the surface of the first abutting block and used in conjunction with the locking structure.

Further, the locking structure includes a guide shell, the side of the guide shell close to the clamping plate is fixedly connected to the surface of the clamping plate, the surface of the first transmission rod is movably connected to the inside of the guide shell, and the clamping One side of the connection plate is threadedly connected with a screw rod, and one end of the surface of the screw rod is sleeved with a bearing, and the end of the bearing away from the screw rod is fixedly connected with a second abutment block, and the surface of the second abutment block is in contact with the first abutment block. The surface of the moving block is in contact with each other, and the side of the second resisting block close to the mounting plate is fixedly connected with a second clamping block, one end of the second clamping block penetrates to the outside of the guide shell, and the side of the second clamping block A second fixing block is clamped on the surface, and the side of the second fixing block close to the mounting plate is fixedly connected with the surface of the mounting plate.

Further, the lock positioning structure includes a lock plate, and both ends of the lock plate are movably connected to a third fixed block through a rotating shaft, and the side of the third fixed block close to the top of the clamping plate is connected to the The surface of the clamping plate is fixedly connected, and a fourth fixing block is arranged between the locking plate and the clamping plate at the bottom, and the side of the fourth fixing block close to the bottom of the clamping plate is connected to the side of the clamping plate. The surface is fixedly connected, and the surface of the fourth fixed block is provided with a locking opening used in conjunction with the locking plate.

Further, both ends of the surface of the first transmission rod are provided with guide openings, and the surface of the guide opening is sleeved with a fifth fixing block, and the side of the fifth fixing block close to the clamping plate and the clamping plate One side of the fifth fixed block is fixedly connected with a first return spring, and the side of the first return spring away from the fifth fixed block is fixedly connected with the inner wall of the guide opening.

Further, a tension spring is provided between the lock plate and the top clamping plate, one end of the tension spring is fixedly connected to the surface of the lock plate, and the other end of the tension spring is clamped to the top clamping plate. The surface of the board is fixedly connected.

Further, a guide plate is fixedly connected to the side of the second resisting block away from the second clamping block, and a guide column is movably connected to the inside of the guide plate, and one end of the guide column is fixedly connected to the inner wall of the guide shell, The other end of the guide column is fixedly connected with a sixth fixed block, and the side of the sixth fixed block close to the guide shell is fixedly connected with the inner wall of the guide shell.

Further, the end of the screw rod far away from the bearing is fixedly connected with a rotary knob, the surface of the guide column is covered with a second return spring, and one end of the second return spring is fixedly connected with the surface of the guide plate. The other end of the two back-moving springs is fixedly connected with the inner wall of the guide housing.

Beneficial effects of the present invention:

1. The present invention can limit and fix the casting mold through the buckle structure and the locking structure by setting the casting mouth, casting mold, buckle structure, locking structure and lock positioning structure, and can be formed by injecting the upper and lower casting molds into sand. Mold, the upper and lower casting molds are clamped, and the upper and lower casting molds are limited and fixed through the lock positioning structure. At the same time, the metal liquid is injected through the casting port to complete the valve casting. By opening the buckle structure and the lock structure, the installation can be made. The disassembly of the plate and the clamping plate facilitates the removal of the cast valve, which solves the problem that the existing sand casting mold is easily deformed and difficult to remove the cast product.

2. The present invention can place the installation plate on the desktop by setting the casting mold, and at the same time, the four clamping plates are clamped to each other, and the spliced clamping plates are clamped into the limit plate, and then through the buckle structure and locking The structure limits and fixes the four clipping plates, which can be combined to mold the valve conveniently, and at the same time, it is convenient to take out the valve after casting.

3. In the present invention, by setting the buckle structure, when the first abutting block moves downward, the first abutting block drives the first transmission rod to move downward, and the first transmission rod drives the first locking block to move downward, so that The first clamping block is clamped on the surface of the first fixing block, and the two adjacent clamping plates are fixed and limited, and can be quickly connected while being stably fixed.

4. By setting the locking structure, the present invention can rotate the screw, and the thread of the screw and the guide shell will drive the screw to move, the screw will drive the bearing to move, the bearing will drive the second abutment block to move, and the second abutment block will move. The first abutting block is moved to drive the buckle structure for transmission. When the second abutting block moves, the second abutting block drives the second clamping block to be stuck on the surface of the second fixed block. Since the second fixed block and The mounting plate is fixed, so that the clamping plate is fixed on the mounting plate, so that the connection between the clamping plate and the mounting plate is more stable.

5. The present invention can combine the upper casting mold with the lower casting mold by setting the lock positioning structure. The upper clamping plate will drive the third fixed block to move downward, and the third fixed block will drive the lock plate to move downward through the rotating shaft. Move down to make the locking plate clamped on the surface of the fourth fixed block, so as to achieve the purpose of connecting and fixing the upper and lower clamping plates.

6. In the present invention, by setting the guide opening, the fifth fixed block and the first return spring, the guide opening can be set on the surface of the first transmission rod, the fifth fixed block can limit the first transmission rod, and the first return spring It can conveniently play a position-limiting effect on the first transmission rod, and it is convenient to disassemble the structure when the structure is loose, and the stability is good.

7. In the present invention, the tension spring can be used to pull the locking plate, so that the locking plate can be better stuck on the surface of the fourth fixed block, and the purpose of stable connection can be achieved.

8. In the present invention, by setting the guide plate, the guide column and the sixth fixed block, the second abutment block can be used as a limit guide. When the second abutment block moves, the second abutment block drives the guide plate The surface of the guide post slides, so that the guide plate can move stably, so that the second abutting block can move stably, and the sixth fixing block can fix the guide post, increase the stability of the guide post, and avoid deformation of the guide post.

9. By setting the rotary knob and the second return spring, the present invention can conveniently drive the screw to rotate through the rotary knob, thereby facilitating the transmission of the structure. The second return spring can facilitate the reset of the guide plate, so that the guide plate can be better to move.

Description of drawings

Other characteristics, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the perspective view of casting mold;

Fig. 3 is a perspective view of the cooperation of the clamping plate;

Fig. 4 is a perspective view of the buckle structure;

Figure 5 is a perspective view of the locking structure;

Fig. 6 is a perspective view of the lock positioning structure;

Fig. 7 is a perspective view of another angle of view of the lock positioning structure;

Figure 8 is an enlarged view of A in Figure 1;

Fig. 9 is an enlarged view of B in Fig. 1;

Figure 10 is an enlarged view of C in Figure 2;

FIG. 11 is an enlarged view of D in FIG. 5 .

In the figure: 1. Casting port; 2. Casting mold; 21. Mounting plate; 22. Clamping plate; 23. Limiting plate; 24. Cooling jack; 3. Buckle structure; 31. First clamping block; 32 , the first fixed block; 33, the first transmission rod; 34, the first abutment block; 4, the locking structure; 41, the guide shell; 42, the screw; 43, the bearing; 44, the second abutment block; 45, the first Two blocks; 46, the second fixed block; 5, the lock positioning structure; 51, the lock plate; 52, the third fixed block; 53, the fourth fixed block; 54, the lock opening; 6, the guide opening; 7 , the fifth fixed block; 8, the first return spring; 9, extension spring; 10, the guide plate; 11, the guide post; 12, the sixth fixed block; 13, the rotary knob; 14, the second return spring.

Detailed ways

In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

Please refer to FIG. 1 , which is a schematic structural diagram of the present invention.

A valve mold produced by sand casting, comprising a casting mouth 1 and two casting molds 2, the two casting molds 2 are arranged up and down, and used in symmetry, the casting mouth 1 is set on the top of the top casting mold 2, and the casting mold 2 The four corners are provided with buckle structures 3, one side of the buckle structure 3 is provided with a locking structure 4, the surface of the locking structure 4 is engaged with the surface of the casting mold 2, and the bottom of the casting port 1 is provided with four locking positioning structures 5. The two ends of the lock positioning structure 5 are respectively used in cooperation with the surfaces of the two casting molds 2 .

Please refer to Figure 2, Figure 3, Figure 4, Figure 5, Figure 6, Figure 7, Figure 8, Figure 9, Figure 10 and Figure 11, Figure 2 is a perspective view of the casting mold; Figure 3 is a perspective view of the clamping plate; Fig. 4 is a perspective view of the buckle structure; Fig. 5 is a perspective view of the locking structure; Fig. 6 is a perspective view of the lock positioning structure; Fig. 7 is a perspective view of another angle of view of the lock positioning structure; Fig. 8 is an enlarged view of A in Fig. 1 ;

Fig. 9 is an enlarged view of B in Fig. 1; Fig. 10 is an enlarged view of C in Fig. 2; Fig. 11 is an enlarged view of D in Fig. 5 .

The casting mold 2 includes a mounting plate 21, four clamping plates 22 are arranged on the top of the mounting plate 21, the two ends of two adjacent clamping plates 22 are clamped to each other, and the top of the mounting plate 21 is provided with four limiting plates 23. The bottoms of the four limiting plates 23 are fixedly connected to the top of the mounting plate 21, the surfaces of the four limiting plates 23 are respectively used in conjunction with one end of the four clamping plates 22, and the casting port 1 is opened on the top mounting plate 21 The top of the top, the buckle structure 3 is located at one end of the clamping plate 22, the side of the locking structure 4 close to the clamping plate 22 is fixedly connected with the surface of the clamping plate 22, and the side of the locking structure 4 close to the mounting plate 21 is connected to the mounting plate 21 Clamping, the two ends of the locking positioning structure 5 are respectively used in cooperation with the upper and lower clamping plates 22, the surfaces of the mounting plate 21 and the clamping plate 22 are provided with cooling jacks 24, and the number of cooling jacks 24 is several, and Evenly distributed, by setting the casting mold 2, the installation plate 21 can be placed on the desktop, and the four clamping plates 22 are clamped to each other at the same time, and the spliced clamping plates 22 are clamped into the limiting plate 23, and then passed The buckle structure 3 and the lock structure 4 limit and fix the four snap-in plates 22 , which can facilitate combination to mold the valve, and at the same time facilitate the removal of the casted valve.

The buckle structure 3 includes a first clamping block 31, one side of the first clamping block 31 is provided with a first fixing block 32, and the side of the first fixing block 32 close to the clamping plate 22 is fixedly connected to one end of the clamping plate 22, The side of the first block 31 close to the mounting plate 21 is fixedly connected with a first transmission rod 33, and the side of the first transmission rod 33 away from the first block 31 is fixedly connected with a first abutment block 34, and the locking structure 4 is sleeved. On the surface of the first abutment block 34, and used in conjunction with the locking structure 4, by setting the buckle structure 3, when the first abutment block 34 moves downward, the first abutment block 34 drives the first transmission rod 33 Moving downward, the first transmission rod 33 drives the first clamping block 31 to move downward, so that the first clamping block 31 is stuck on the surface of the first fixed block 32, and the two adjacent clamping plates 22 are fixed and limited. It can be connected quickly while being stable and fixed.

The locking structure 4 includes a guide shell 41, the side of the guide shell 41 close to the clamping plate 22 is fixedly connected to the surface of the clamping plate 22, the surface of the first transmission rod 33 is flexibly connected to the inside of the guide shell 41, and the surface of the clamping plate 22 One side is threadedly connected with a screw rod 42, and one end of the surface of the screw rod 42 is provided with a bearing 43, and the end of the bearing 43 away from the screw rod 42 is fixedly connected with a second abutment block 44, and the surface of the second abutment block 44 and the first abutment block 34 in contact with the surface, and the second resisting block 44 is fixedly connected with the second clamping block 45 on one side close to the mounting plate 21. One end of the second clamping block 45 penetrates to the outside of the guide shell 41, and the surface of the second clamping block 45 A second fixed block 46 is clamped, and the side of the second fixed block 46 close to the mounting plate 21 is fixedly connected with the surface of the mounting plate 21. By setting the locking structure 4, the screw 42 can be rotated, and the screw 42 and the screw thread of the guide shell 41 Cooperate, it will drive the screw 42 to move, the screw 42 drives the bearing 43 to move, the bearing 43 drives the second abutment block 44 to move, the second abutment block 44 abuts the first abutment block 34, thereby driving the buckle structure 3 Carry out the transmission, while the second abutting block 44 moves, the second abutting block 44 drives the second clamping block 45 to be stuck on the surface of the second fixed block 46, because the second fixed block 46 is fixed with the mounting plate 21, so the The clamping plate 22 is fixed on the mounting plate 21, so that the connection between the clamping plate 22 and the mounting plate 21 is more stable.

The lock positioning structure 5 includes a lock plate 51, the two ends of the lock plate 51 are movably connected with a third fixed block 52 through a rotating shaft, and the side of the third fixed block 52 close to the top clamping plate 22 is connected to the side of the clamping plate 22. The surface is fixedly connected, and a fourth fixing block 53 is arranged between the locking plate 51 and the bottom snapping plate 22. The side of the fourth fixing block 53 close to the bottom snapping plate 22 is fixedly connected with the surface of the snapping plate 22. The fourth The surface of the fixed block 53 is provided with a locking opening 54 used in conjunction with the locking plate 51. By setting the locking positioning structure 5, the upper casting mold 2 can be combined with the lower casting mold 2, and the upper locking plate 22 will Drive the third fixed block 52 to move downward, and the third fixed block 52 drives the lock plate 51 to move downward through the rotating shaft, so that the lock plate 51 is stuck on the surface of the fourth fixed block 53, so as to connect and fix the upper and lower clamping plates 22 the goal of.

Both ends of the surface of the first transmission rod 33 are provided with guide openings 6, the surface of the guide opening 6 is covered with a fifth fixed block 7, the side of the fifth fixed block 7 close to the clamping plate 22 and the surface of the clamping plate 22 Fixedly connected, one side of the fifth fixed block 7 is fixedly connected with the first return spring 8, and the side of the first return spring 8 away from the fifth fixed block 7 is fixedly connected with the inner wall of the guide opening 6, by setting the guide opening 6, the second Five fixed blocks 7 and the first back-moving spring 8 can set guide opening 6 on the surface of the first transmission rod 33, the fifth fixed block 7 can carry out position-limiting guidance to the first transmission rod 33, and the first back-moving spring 8 can conveniently The first transmission rod 33 plays a position-limiting role, so that the structure can be disassembled conveniently when the structure is loose, and the stability is good.

A tension spring 9 is arranged between the locking plate 51 and the top clamping plate 22, one end of the tension spring 9 is fixedly connected to the surface of the locking plate 51, and the other end of the tension spring 9 is fixedly connected to the surface of the top clamping plate 22, By setting the tension spring 9, the locking plate 51 can be pulled, so that the locking plate 51 is better stuck on the surface of the fourth fixing block 53, and the purpose of stable connection can be achieved.

The side of the second resist block 44 away from the second clamping block 45 is fixedly connected with a guide plate 10, and the inside of the guide plate 10 is movably connected with a guide column 11, and one end of the guide column 11 is fixedly connected with the inner wall of the guide shell 41, and the guide column The other end of 11 is fixedly connected with the sixth fixed block 12, the side of the sixth fixed block 12 close to the guide shell 41 is fixedly connected with the inner wall of the guide shell 41, by setting the guide plate 10, the guide column 11 and the sixth fixed block 12, The second abutment block 44 can be used as a limit guide. When the second abutment block 44 moves, the second abutment block 44 drives the guide plate 10 to slide on the surface of the guide column 11, so that the guide plate 10 can be stabilized. As a result, the second resisting block 44 can move stably, and the sixth fixing block 12 can fix the guide post 11, increase the stability of the guide post 11, and avoid the deformation of the guide post 11.

One end of the screw rod 42 away from the bearing 43 is fixedly connected with a rotary knob 13, and the surface of the guide column 11 is provided with a second return spring 14, and one end of the second return spring 14 is fixedly connected with the surface of the guide plate 10, and the second return spring 14 The other end of the other end is fixedly connected with the inner wall of the guide shell 41. By setting the rotary knob 13 and the second return spring 14, the rotary knob 13 can be used to conveniently drive the screw rod 42 to rotate, thereby facilitating the transmission of the structure. The second return spring 14 The reset of the guide plate 10 can be facilitated, so that the guide plate 10 can move better.

Working principle: When in use, place the mounting plate 21 on the desktop, and at the same time, engage the four clamping plates 22 with each other, and clamp the spliced clamping plates 22 into the limit plate 23, and then rotate the rotary knob to rotate The button drives the screw rod 42 to rotate, and the screw rod 42 cooperates with the thread of the guide shell 41 to drive the screw rod 42 to move, the screw rod 42 drives the bearing 43 to move, the bearing 43 drives the second abutment block 44 to move, and the second abutment block 44 to move The first abutment block 34 is moved to drive the buckle structure 3 for transmission. While the second abutment block 44 is moving, the second abutment block 44 drives the second clamping block 45 to be stuck on the surface of the second fixed block 46, At the same time, the second abutting block 44 drives the guide plate 10 to slide on the surface of the guide post 11, so that the guide plate 10 can move stably, so that the second abutting block 44 can move stably. , so that the clamping plate 22 is fixed on the mounting plate 21, when the first abutting block 34 moves downward, the first abutting block 34 drives the first transmission rod 33 to move downward, and the first transmission rod 33 is subjected to the fifth The limit of the fixed block 7 will squeeze the first back-moving spring 8 due to the downward movement of the first transmission rod 33, and the first transmission rod 33 will drive the first block 31 to move downward, so that the first block 31 is stuck in the The surface of the first fixed block 32 fixes and limits the two adjacent clamping plates 22, and the buckle structure 3 and the locking structure 4 limit and fix the four clamping plates 22, put the model in, pass through the sand Perform casting, combine the upper casting mold 2 with the lower casting mold 2, the upper clamping plate 22 will drive the third fixed block 52 to move downward, and the third fixed block 52 will drive the locking plate 51 to move downward through the rotating shaft , so that the locking plate 51 is stuck on the surface of the fourth fixing block 53, so as to achieve the purpose of connecting and fixing the upper and lower locking plates 22, and then inject the molten metal liquid into the casting mold 2 through the casting port 1. After the valve is initially finalized, use The steel drill passes through the cooling socket 24 to cool down the internal valve product. After the internal valve product is cooled, turn the rotary knob 13 in the opposite direction, and the rotary knob drives the screw 42 to move, and the screw 42 drives the second abutment block through the bearing 43 44 moves, the second abutting block 44 breaks away from the surface of the first abutting block 34, the first return spring 8 drives the first transmission rod 33 to reset, and the first transmission rod 33 drives the first clamping block 31 to break away from the surface of the first fixed block 32 At the same time, the second abutting block 44 drives the second clamping block 45 to break away from the surface of the second fixing block 46, and the clamping plate 22 is disassembled from the mounting plate 21 to achieve the purpose of quickly taking out the valve.

The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and without departing from the spirit or basic principles of the present invention. The present invention can be implemented in other specific forms without any specific features. Accordingly, the embodiments should be regarded in all points of view as exemplary and not restrictive, the scope of the invention being defined by the appended claims rather than the foregoing description, and it is therefore intended that the scope of the invention be defined by the appended claims rather than by the foregoing description. All changes within the meaning and range of equivalents of the elements are embraced in the present invention. Any reference sign in a claim should not be construed as limiting the claim concerned.

In addition, it should be understood that although this specification is described according to implementation modes, not each implementation mode only includes an independent technical solution, and this description in the specification is only for clarity, and those skilled in the art should take the specification as a whole , the technical solutions in the various embodiments can also be properly combined to form other implementations that can be understood by those skilled in the art.

Claims (8)

1. A valve mold produced by sand casting, comprising a casting mouth (1) and two casting molds (2), is characterized in that: two described casting molds (2) are arranged up and down, and are used in symmetry, the described The casting mouth (1) is opened on the top of the casting mold (2) at the top; The four corners of the casting mold (2) are provided with buckle structures (3), one side of the buckle structure (3) is provided with a locking structure (4), and the surface of the locking structure (4) is in contact with the casting mold (2) The surface fits and clamps; The bottom of the casting port (1) is provided with four locking positioning structures (5), and the two ends of the locking positioning structures (5) are respectively used in cooperation with the surfaces of the two casting molds (2). 2. A valve mold produced by sand casting according to claim 1, characterized in that: the casting mold (2) includes a mounting plate (21), and four clips are arranged on the top of the mounting plate (21) Connecting plate (22), the two ends of two adjacent clamping plates (22) are all clamped to each other, and the top of the mounting plate (21) is provided with four limiting plates (23), and the four The bottoms of the limiting plates (23) are all fixedly connected to the top of the mounting plate (21), and the surfaces of the four limiting plates (23) are respectively used in cooperation with one end of the four clamping plates (22). The opening (1) is opened on the top of the mounting plate (21) at the top, the buckle structure (3) is located at one end of the clamping plate (22), and the locking structure (4) is close to the clamping plate (22) One side is fixedly connected with the surface of the clamping plate (22), the side of the locking structure (4) close to the mounting plate (21) is clamped with the mounting plate (21), and the two sides of the lock positioning structure (5) The ends are respectively used in conjunction with the upper and lower clamping plates (22), and the surfaces of the mounting plate (21) and the clamping plate (22) are provided with cooling jacks (24), and the cooling jacks (24) The number is several and is evenly distributed. 3. A valve mold produced by sand casting according to claim 2, characterized in that: the buckle structure (3) includes a first clamping block (31), one of the first clamping blocks (31) The side is provided with a first fixed block (32), and the side of the first fixed block (32) close to the clamping plate (22) is fixedly connected with one end of the clamping plate (22), and the first clamping block (31 ) is fixedly connected with a first transmission rod (33) near the side of the mounting plate (21), and the first transmission rod (33) is fixedly connected with a first abutment block ( 34), the locking structure (4) is sheathed on the surface of the first abutment block (34), and is used in cooperation with the locking structure (4). 4. A valve mold produced by sand casting according to claim 3, characterized in that: the locking structure (4) includes a guide shell (41), and the guide shell (41) is close to the clamping plate (22) One side of the clamping plate (22) is fixedly connected to the surface, the surface of the first transmission rod (33) is flexibly connected to the inside of the guide housing (41), and one side of the clamping plate (22) is screwed There is a screw rod (42), one end of the surface of the screw rod (42) is sleeved with a bearing (43), and the end of the bearing (43) away from the screw rod (42) is fixedly connected with a second abutment block (44). The surface of the second abutting block (44) is in contact with the surface of the first abutting block (34), and the side of the second abutting block (44) close to the mounting plate (21) is fixedly connected with a second clamping block (45), one end of the second clamping block (45) penetrates to the outside of the guide shell (41), the surface of the second clamping block (45) is clamped with a second fixing block (46), the first The side of the two fixing blocks (46) close to the mounting plate (21) is fixedly connected with the surface of the mounting plate (21). 5. A valve mold produced by sand casting according to claim 2, characterized in that: the lock positioning structure (5) comprises a lock plate (51), and the two ends of the lock plate (51) All are movably connected with a third fixed block (52) through a rotating shaft, and the side of the third fixed block (52) near the top of the clamping plate (22) is fixedly connected with the surface of the clamping plate (22). A fourth fixing block (53) is arranged between the locking plate (51) and the clamping plate (22) at the bottom, and the fourth fixing block (53) is close to the side of the clamping plate (22) at the bottom It is fixedly connected with the surface of the clamping plate (22), and the surface of the fourth fixed block (53) is provided with a locking opening (54) used in cooperation with the locking plate (51). 6. A valve mold produced by sand casting according to claim 3, characterized in that: both ends of the surface of the first transmission rod (33) are provided with guide openings (6), and the guide openings (6) ) is covered with a fifth fixed block (7), the side of the fifth fixed block (7) close to the clamping plate (22) is fixedly connected with the surface of the clamping plate (22), and the fifth fixed One side of the block (7) is fixedly connected with a first return spring (8), and the side of the first return spring (8) away from the fifth fixed block (7) is fixedly connected with the inner wall of the guide opening (6). 7. A valve mold produced by sand casting according to claim 5, characterized in that: a tension spring (9) is arranged between the locking plate (51) and the clamping plate (22) on the top, One end of the extension spring (9) is fixedly connected to the surface of the locking plate (51), and the other end of the extension spring (9) is fixedly connected to the surface of the clamping plate (22) on the top. 8. A valve mold produced by sand casting according to claim 4, characterized in that: the side of the second abutting block (44) away from the second clamping block (45) is fixedly connected with a guide plate (10 ), the inside of the guide plate (10) is movably connected with a guide column (11), one end of the guide column (11) is fixedly connected with the inner wall of the guide shell (41), and the other end of the guide column (11) A sixth fixed block (12) is fixedly connected, and the side of the sixth fixed block (12) close to the guide shell (41) is fixedly connected with the inner wall of the guide shell (41).

Images