Technological equipment for fixing cantilever sand core

Abstract

The invention discloses technological equipment for fixing a cantilever sand core, which comprises lower molding sand and upper molding sand, a cavity is formed between the lower molding sand and the upper molding sand, the cantilever sand core is clamped between the lower molding sand and the upper molding sand, one end of the cantilever sand core is provided with a clamping column, the lower molding sand is provided with a first semi-circular groove, and the first semi-circular groove is provided with a second semi-circular groove. A second semi-circular groove is formed in the upper molding sand, the first semi-circular groove and the second semi-circular groove communicate with the molding cavity, and the clamping column is clamped in the first semi-circular groove and the second semi-circular groove; a locking seat is pre-embedded in the clamping column, the inner side wall of the lower molding sand is in threaded connection with a lock catch mechanism, and the output end of the lock catch mechanism penetrates through the lower molding sand and extends outwards. The technological equipment has the advantages that the technological equipment is suitable for various casting technologies needing to fix the cantilever sand core, the fixed cantilever sand core is firm and reliable, installation is convenient and fast, positioning is accurate, the structural stability is high, the production requirements of different castings can be met, and the casting quality can be ensured.

Description

Technical Field

[0001] The invention relates to the technical field of casting production of sand mold steel castings, in particular to a process equipment for fixing a cantilever sand core. Background Art

[0002] In modern casting technology, the fixation of cantilever sand core is a key link. With the continuous development of industry, the quality and precision requirements of castings are getting higher and higher, and the traditional cantilever sand core fixation technology has gradually revealed its limitations.

[0003] Traditional cantilever sand core fixing methods are usually relatively simple and crude, and may only rely on some simple support structures or simple clamping methods. However, such fixing methods have many problems in practical applications. On the one hand, the stability of the fixation is difficult to guarantee. During the casting process, due to the large impact force and pressure generated by the injection of liquid metal, the cantilever sand core under the traditional fixing method is easily displaced or deformed. This will not only affect the dimensional accuracy of the casting, but may also cause defects in the casting, seriously reducing the quality of the casting. On the other hand, the installation and disassembly process of the traditional fixing method is often cumbersome. This not only increases the labor intensity of the workers, but also prolongs the production cycle and reduces production efficiency. In addition, the adaptability of the traditional fixing method is also relatively limited, and it is difficult to meet the fixing requirements of cantilever sand cores of different shapes and sizes.

[0004] With the advancement of science and technology and the continuous changes in market demand, foundry companies are in urgent need of a more efficient, stable and reliable cantilever sand core fixing process equipment. This equipment should not only be able to firmly fix the cantilever sand core to ensure that it does not move during the casting process, but also be easy to install and disassemble, improve production efficiency, and be able to adapt to the production needs of different types of castings, providing strong technical support for the development of the foundry industry.

[0005] Therefore, we propose a process equipment of fixed cantilever sand core to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to solve the problems in the prior art and to propose a process equipment for fixing a cantilever sand core.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A process equipment for fixing a cantilever sand core, comprising lower molding sand and upper molding sand, wherein a molding cavity is formed between the lower molding sand and the upper molding sand, a cantilever sand core is clamped between the lower molding sand and the upper molding sand, a clamping column is provided at one end of the cantilever sand core, a first semicircular groove is provided on the lower molding sand, a second semicircular groove is provided on the upper molding sand, and both the first semicircular groove and the second semicircular groove are communicated with the molding cavity, and the clamping column is clamped in the first semicircular groove and the second semicircular groove;

[0009] A locking seat is embedded in the clamping column, the inner wall of the lower molding sand is threadedly connected with a locking mechanism, and the output end of the locking mechanism passes through the lower molding sand and extends outward, and the locking mechanism extends into the locking seat and is clamped in the locking seat.

[0010] In the above-mentioned process equipment for fixing the cantilever sand core, the locking mechanism includes a mounting column, and the mounting column is threadedly connected in the lower molding sand, the mounting column includes a threaded portion and a limiting cylinder, and the threaded portion is threadedly connected to the lower molding sand, a cylindrical groove is provided on the locking seat, and the limiting cylinder is located in the cylindrical groove, two mounting disks are symmetrically installed in the limiting cylinder, a threaded rod is commonly installed in the two mounting disks, one end of the threaded rod passes through one of the mounting disks and is fixedly connected with a connecting rod, and the end of the connecting rod away from the threaded rod passes through the threaded portion and the lower molding sand in sequence and is installed with a knob by interference fit;

[0011] A plurality of wedge frames are symmetrically mounted on the two mounting plates, and both ends of each wedge frame are slidably connected to the two mounting plates respectively; a plurality of push plates are threadedly connected to the threaded rod, and each push plate is slidably connected to the wedge frame; a locking plate is provided on each wedge frame; a plurality of triangular locking grooves are symmetrically opened on the inner side wall of the cylindrical groove, and each locking plate is clamped in a triangular locking groove corresponding to the position.

[0012] In the above-mentioned process equipment for fixing the cantilever sand core, a plurality of limit rods are installed between the two mounting plates, a limit hole is provided on each of the pushing plates, and each limit rod is slidably connected in the limit hole corresponding to the position.

[0013] In the above-mentioned process equipment for fixing the cantilever sand core, the end face of each wedge-shaped frame close to the threaded rod is an inclined surface, and a guide column is fixedly connected to the inclined surface. Guide grooves are symmetrically opened on the outer wall of each pushing plate, and each guide column is slidably connected in the guide groove at the corresponding position.

[0014] In the above-mentioned process equipment for fixing the cantilever sand core, a plurality of T-shaped grooves are provided on the end surface of each mounting plate, a T-shaped slider is fixedly connected to both ends of each wedge frame, and each T-shaped slider is slidably connected in the T-shaped groove at the corresponding position.

[0015] In the above-mentioned process equipment for fixing the cantilever sand core, a plurality of connecting columns are installed between the two mounting plates.

[0016] In the above-mentioned process equipment for fixing the cantilever sand core, a plurality of movable grooves are symmetrically opened on the limiting cylinder, and the length of the movable groove is not less than the length of the wedge frame, and the locking plate passes through the movable groove and is clamped in the triangular locking groove, and each of the movable grooves is opened at both ends with a T-shaped through groove, and the T-shaped slider is located in the T-shaped through groove.

[0017] In the above-mentioned process equipment for fixing the cantilever sand core, a pre-buried groove is provided on the clamping column, and the locking seat is clamped in the pre-buried groove, reinforcement grooves are symmetrically provided on the outer wall of the pre-buried groove, reinforcement strips are symmetrically installed on the outer wall of the locking seat, and the reinforcement strips are clamped in the reinforcement grooves.

[0018] In the above-mentioned process equipment for fixing the cantilever sand core, a positioning block is fixedly connected to the inner bottom wall of the cylindrical groove, a positioning groove is opened at the end of the limit cylinder, and the positioning block is clamped in the positioning groove, the positioning block includes a plurality of symmetrically arranged positioning strips, the positioning groove includes a plurality of symmetrically arranged strip grooves, and the plurality of strip grooves are interconnected, and each positioning strip is clamped in a strip groove corresponding to the position.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. Through the ingenious design of the locking mechanism, the cantilever sand core can be firmly fixed. When the locking plate on the wedge frame is inserted into the triangular locking groove on the inner wall of the cylindrical groove, the locking seat embedded in the clamping column can be tightly locked, thereby ensuring that the cantilever sand core will not move during the casting process and ensuring the quality of the casting.

[0021] 2. When installing the locking mechanism, first remove the knob from the connecting rod, and then install the knob after threading the threaded part of the mounting column into the lower molding sand, so as to realize the reuse of the locking mechanism, the locking seat can also be reused, and the entire device can be reused.

[0022] 3. The first semicircular groove on the lower molding sand and the second semicircular groove on the upper molding sand jointly perform preliminary positioning of the cantilever sand core to ensure the position accuracy of the cantilever sand core during installation. When the cantilever sand core and the clamping column move toward the semicircular groove, the limit cylinder is inserted into the cylindrical groove on the locking seat, and the cantilever sand core is rotated to ensure that the positioning block on the bottom wall of the cylindrical groove is inserted into the positioning groove at the end of the limit cylinder, which further ensures that the position of the lock plate corresponds to the triangular lock groove, thereby improving the accuracy and reliability of installation.

[0023] 4. The T-shaped sliders at both ends of the wedge frame slide in the T-shaped slide grooves on the end surface of the mounting plate, ensuring the stability of the wedge frame movement. At the same time, multiple connecting columns and multiple limit rods further enhance the structural stability of the mounting plate, allowing the entire locking mechanism to withstand greater forces during operation, thereby improving the reliability and service life of the device.

[0024] In summary, the process equipment proposed in the present invention is suitable for various casting processes that require fixed cantilever sand cores. The fixed cantilever sand cores are firm and reliable, easy and quick to install, accurately positioned, and have high structural stability. They can meet the production needs of different castings and ensure the quality of castings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a visual diagram of the installation completion state of a process equipment for fixing a cantilever sand core proposed by the present invention;

[0026] Figure 2 It is a visual diagram of removing the upper molding sand of a process equipment for fixing the cantilever sand core proposed by the present invention;

[0027] Figure 3 A visual diagram of removing the cantilever sand core from a process equipment for fixing the cantilever sand core proposed by the present invention;

[0028] Figure 4 This is an enlarged view of the structure of the locking seat part in the process equipment for fixing the cantilever sand core proposed by the present invention;

[0029] Figure 5 This is an enlarged structural view of a cross-sectional state of a locking seat in a process equipment for fixing a cantilever sand core proposed by the present invention;

[0030] Figure 6 This is an enlarged view of the structure of the mounting column part in the process equipment for fixing the cantilever sand core proposed by the present invention;

[0031] Figure 7 This is an enlarged view of the structure of the mounting plate part in the process equipment for fixing the cantilever sand core proposed by the present invention;

[0032] Figure 8 for Figure 7 Remove the exploded view of the connecting column;

[0033] Fig. 9 This is an enlarged view of the structure of the push plate part in the process equipment for fixing the cantilever sand core proposed by the present invention;

[0034] Fig.10 This is an enlarged view of the structure of the wedge frame part in the process equipment for fixing the cantilever sand core proposed by the present invention.

[0035] In the figure: 1 lower molding sand, 2 upper molding sand, 3 knob, 4 cantilever sand core, 5 clamping column, 6 cavity, 7 threaded part, 8 locking seat, 9 connecting rod, 10 embedded groove, 11 reinforcement groove, 12 reinforcement strip, 13 triangular locking groove, 14 locking plate, 15 movable groove, 16 limiting cylinder, 17 wedge frame, 18 mounting plate, 19 T-type slide groove, 20 threaded rod, 21 pushing plate, 22 connecting column, 23 T-type slider, 24 guide column, 25 limiting rod, 26 guide groove, 27 limiting hole, 28 T-type through groove, 29 cylindrical groove. DETAILED DESCRIPTION

[0036] The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0037] Example

[0038] Reference Figure 1-10 A process equipment for fixing a cantilever sand core comprises a lower molding sand 1 and an upper molding sand 2, wherein a molding cavity 6 is formed between the lower molding sand 1 and the upper molding sand 2, and the upper molding sand 1 and the lower molding sand 2 are clamped and fixed at their edges by a special clamp or locking device. For example, a clamp with bolts and nuts can be used to clamp the edges of the upper and lower molding sands in the middle, and a tight connection is achieved by tightening the bolts. The connection method between the upper molding sand 2 and the lower molding sand 1 is an existing mature technology, and a gate and a runner are set at appropriate positions of the upper molding sand 1 and the lower molding sand 2, and the gate is a liquid The gate is the entrance for liquid alloy to enter the mold cavity, and the runner plays the role of guiding the flow of liquid alloy. The shape, size and position of the gate and the runner need to be reasonably designed according to the shape, size and process requirements of the casting. This part is an existing mature technology. A cantilever sand core 4 is commonly clamped between the lower molding sand 1 and the upper molding sand 2, and a clamping column 5 is provided at one end of the cantilever sand core 4. A first semicircular groove is opened on the lower molding sand 1, and a second semicircular groove is opened on the upper molding sand 2, and the first semicircular groove and the second semicircular groove are both connected to the molding cavity 6, and the clamping column 5 is clamped in the first semicircular groove and the second semicircular groove.

[0039] A locking seat 8 is embedded in the clamping column 5, an embedded groove 10 is provided on the clamping column 5, and the locking seat 8 is clamped in the embedded groove 10, reinforcement grooves 11 are symmetrically provided on the outer side wall of the embedded groove 10, reinforcement strips 12 are symmetrically installed on the outer side wall of the locking seat 8, and the reinforcement strips 12 are clamped in the reinforcement groove 11.

[0040] The inner side wall of the lower molding sand 1 is threadedly connected with a locking mechanism, and the output end of the locking mechanism passes through the lower molding sand 1 and extends outward, and the locking mechanism extends to the locking seat 8 and is clamped in the locking seat 8, the locking mechanism includes a mounting column, and the mounting column is threadedly connected in the lower molding sand 1, the mounting column includes a threaded portion 7 and a limiting cylinder 16, and the threaded portion 7 is threadedly connected to the lower molding sand 1, a cylindrical groove 29 is provided on the locking seat 8, and the limiting cylinder 16 is located in the cylindrical groove 29, a positioning block is fixedly connected to the inner bottom wall of the cylindrical groove 29, a positioning groove is provided at the end of the limiting cylinder 16, and the positioning block is clamped in the positioning groove, the positioning block includes a plurality of symmetrically arranged positioning strips, the positioning groove includes a plurality of symmetrically arranged strip grooves, and the plurality of strip grooves are connected to each other, and each positioning strip is clamped in the strip groove corresponding to the position.

[0041] Two mounting plates 18 are symmetrically installed in the limiting cylinder 16, and a plurality of connecting columns 22 are installed between the two mounting plates 18. A threaded rod 20 is installed in the two mounting plates 18. One end of the threaded rod 20 passes through one of the mounting plates 18 and is fixedly connected to a connecting rod 9. The end of the connecting rod 9 away from the threaded rod 20 passes through the threaded portion 7 and the lower molding sand 1 in sequence and is installed with a knob 3 by interference fit.

[0042] A plurality of wedge frames 17 are symmetrically mounted on the two mounting plates 18, and both ends of each wedge frame 17 are slidably connected to the two mounting plates 18, and a plurality of T-shaped slide grooves 19 are provided on the end surface of each mounting plate 18. A T-shaped slider 23 is fixedly connected to both ends of each wedge frame 17, and each T-shaped slider 23 is slidably connected in the T-shaped slide groove 19 corresponding to the position. A plurality of push plates 21 are threadedly connected to the threaded rod 20, and each push plate 21 is slidably connected to the wedge frame 17. A plurality of limiting rods 25 are installed between the two mounting plates 18, and each push plate 21 is provided with a limiting hole 27, and each limiting rod 25 is slidably connected in the limiting hole 27 corresponding to the position. Each wedge frame 17 is close to the threaded rod The end face of 20 is an inclined surface, and a guide column 24 is fixedly connected to the inclined surface. A guide groove 26 is symmetrically opened on the outer wall of each push plate 21, and each guide column 24 is slidably connected in the guide groove 26 at the corresponding position. A locking plate 14 is provided on each wedge frame 17. A plurality of triangular locking grooves 13 are symmetrically opened on the inner wall of the cylindrical groove 10, and each locking plate 14 is clamped in the triangular locking groove 13 at the corresponding position. A plurality of movable grooves 15 are symmetrically opened on the limiting cylinder 16, and the length of the movable groove 15 is not less than the length of the wedge frame 17, and the locking plate 14 passes through the movable groove 15 and is clamped in the triangular locking groove 13. T-shaped through grooves 28 are opened at both ends of each movable groove 15, and the T-shaped slider 23 is located in the T-shaped through groove 28.

[0043] Before installing the cantilever sand core 4, install the locking mechanism first. When installing the locking mechanism, first remove the knob 3 from the connecting rod 9, and then thread it into the lower molding sand 1 through the threaded portion 7 of the mounting column. After the mounting column is installed, install the knob 3 on the connecting rod 9, and pre-embed the locking seat 8 into the clamping column 5 of the cantilever sand core 4.

[0044] The process equipment mainly includes lower molding sand 1 and upper molding sand 2, a molding cavity 6 is formed between the lower molding sand 1 and the upper molding sand 2, a cantilever sand core 4 is clamped between the lower molding sand 1 and the upper molding sand 2, a clamping column 5 is provided at one end of the cantilever sand core 4, a first semicircular groove is opened on the lower molding sand 1, and a second semicircular groove is opened on the upper molding sand 2. The cantilever sand core 4 and the clamping column 5 are moved toward the first semicircular groove and the second semicircular groove. During the movement, the limiting cylinder 16 is inserted into the cylindrical groove 29 on the locking seat 8, and the first semicircular groove and the second semicircular groove jointly perform preliminary positioning of the cantilever sand core 4.

[0045] When the cantilever sand core 4 needs to be fixed, the knob 3 is rotated, and the knob 3 drives the connecting rod 9 to rotate, thereby rotating the threaded rod 20. When the threaded rod 20 rotates, the push plate 21 can only move along the limit rod 25 due to the restriction of the limit rod 25. At the same time, the guide groove 26 on the outer wall of the push plate 21 cooperates with the guide column 24 on the inclined surface of the wedge frame 17 to push the wedge frame 17 to move, and the T-shaped sliders 23 at both ends of the wedge frame 17 slide in the T-shaped slide grooves 19 on the end surface of the mounting plate 18 to ensure The stability of the movement of the wedge frame 17, at the same time, multiple connecting columns 22 and multiple limiting rods 25 further enhance the structural stability of the mounting plate 18. As the wedge frame 17 moves, the locking plate 14 on the wedge frame 17 passes through the movable groove 15 on the limiting cylinder 16. When the wedge frame 17 moves to a certain position, the locking plate 14 is inserted into the triangular locking groove 13 on the inner wall of the cylindrical groove 29, thereby locking and fixing the locking seat 8 embedded in the clamping column 5, thereby achieving the purpose of fixing the cantilever sand core 4.

[0046] Finally, the upper molding sand 2 and the lower molding sand 1 are locked and fixed, and liquid alloy is injected into the mold cavity 6 to form a casting after cooling and solidification.

[0047] It is worth mentioning that in the process of moving the cantilever sand core 4 and the clamping column 5 toward the first semicircular groove and the second semicircular groove, the limiting cylinder 16 is inserted into the cylindrical groove 29 on the locking seat 8. After the insertion is completed, the cantilever sand core 4 is rotated to ensure that the positioning block on the bottom wall of the cylindrical groove 29 is inserted into the positioning groove at the end of the limiting cylinder 16. At this time, it can ensure that the position of the locking plate 14 corresponds to the position of the triangular locking groove 13.

[0048] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A process equipment for fixing a cantilever sand core, comprising lower molding sand (1) and upper molding sand (2), wherein a molding cavity (6) is formed between the lower molding sand (1) and the upper molding sand (2), and characterized in that: A cantilever sand core (4) is clamped between the lower molding sand (1) and the upper molding sand (2), a clamping column (5) is provided at one end of the cantilever sand core (4), a first semicircular groove is provided on the lower molding sand (1), a second semicircular groove is provided on the upper molding sand (2), and both the first semicircular groove and the second semicircular groove are connected to the molding cavity (6), and the clamping column (5) is clamped in the first semicircular groove and the second semicircular groove; A locking seat (8) is pre-buried in the clamping column (5), and a locking mechanism is threadedly connected to the inner wall of the lower molding sand (1), and the output end of the locking mechanism passes through the lower molding sand (1) and extends outward, and the locking mechanism extends into the locking seat (8) and is clamped in the locking seat (8).

2. The process equipment for fixing cantilever sand core according to claim 1, characterized in that: The locking mechanism comprises a mounting column, and the mounting column is threadedly connected in the lower molding sand (1), the mounting column comprises a threaded portion (7) and a limiting cylinder (16), and the threaded portion (7) is threadedly connected to the lower molding sand (1), a cylindrical groove (29) is provided on the locking seat (8), and the limiting cylinder (16) is located in the cylindrical groove (29), two mounting plates (18) are symmetrically installed in the limiting cylinder (16), and a threaded rod (20) is commonly installed in the two mounting plates (18), one end of the threaded rod (20) passes through one of the mounting plates (18) and is fixedly connected to a connecting rod (9), and the end of the connecting rod (9) away from the threaded rod (20) passes through the threaded portion (7) and the lower molding sand (1) in sequence and is installed with a knob (3) in an interference fit; A plurality of wedge frames (17) are symmetrically mounted on the two mounting plates (18), and both ends of each wedge frame (17) are slidably connected to the two mounting plates (18), a plurality of push plates (21) are threadedly connected to the threaded rod (20), and each push plate (21) is slidably connected to the wedge frame (17), and each wedge frame (17) is provided with a locking plate (14), and a plurality of triangular locking grooves (13) are symmetrically opened on the inner side wall of the cylindrical groove (10), and each locking plate (14) is clamped in a triangular locking groove (13) corresponding to the position.

3. The process equipment for fixing cantilever sand core according to claim 2, characterized in that: A plurality of limiting rods (25) are installed between the two mounting plates (18), a limiting hole (27) is provided on each of the pushing plates (21), and each limiting rod (25) is slidably connected in a limiting hole (27) at a corresponding position.

4. The process equipment for fixing cantilever sand core according to claim 2, characterized in that: The end surface of each wedge-shaped frame (17) close to the threaded rod (20) is an inclined surface, and a guide column (24) is fixedly connected to the inclined surface. The outer side wall of each push plate (21) is symmetrically provided with a guide groove (26), and each guide column (24) is slidably connected in the guide groove (26) at a corresponding position.

5. The process equipment for fixing cantilever sand core according to claim 2, characterized in that: The end surface of each mounting plate (18) is provided with a plurality of T-shaped slide grooves (19), and both ends of each wedge-shaped frame (17) are fixedly connected with T-shaped slide blocks (23), and each T-shaped slide block (23) is slidably connected in a T-shaped slide groove (19) at a corresponding position.

6. The process equipment for fixing cantilever sand core according to claim 2, characterized in that: A plurality of connecting columns (22) are installed between the two installation plates (18).

7. The process equipment for fixing cantilever sand core according to claim 2, characterized in that: The limiting cylinder (16) is symmetrically provided with a plurality of movable grooves (15), and the length of the movable grooves (15) is not less than the length of the wedge frame (17), and the locking plate (14) passes through the movable grooves (15) and is clamped in the triangular locking grooves (13), and each of the movable grooves (15) is provided with T-shaped through grooves (28) at both ends, and the T-shaped sliding block (23) is located in the T-shaped through grooves (28).

8. The process equipment for fixing cantilever sand core according to claim 1, characterized in that: The clamping column (5) is provided with an embedded groove (10), and the locking seat (8) is clamped in the embedded groove (10), the outer side wall of the embedded groove (10) is symmetrically provided with a reinforcement groove (11), the outer side wall of the locking seat (8) is symmetrically provided with a reinforcement strip (12), and the reinforcement strip (12) is clamped in the reinforcement groove (11).

9. The process equipment for fixing cantilever sand core according to claim 2, characterized in that: A positioning block is fixedly connected to the inner bottom wall of the cylindrical groove (29); a positioning groove is formed at the end of the limiting cylinder (16), and the positioning block is clamped in the positioning groove; the positioning block includes a plurality of symmetrically arranged positioning strips; the positioning groove includes a plurality of symmetrically arranged strip grooves, and the plurality of strip grooves are interconnected, and each positioning strip is clamped in a strip groove corresponding to the position.

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