Clay sand molding machine with upper model and lower model

Abstract

The invention relates to a clay sand molding machine with upper and lower surface models, which can effectively solve the problems that a molding machine is simple in molding, can produce high-difficulty castings, can replace precoated sand, is pollution-free, is simple to operate and can reuse sand. An upper pressing plate is arranged on the lower portion of the top plate, an upper shaping plate is arranged below the upper pressing plate, an offside box is arranged at the lower end of the guide column, the offside box is sleeved on the upper pressing plate, the upper end of the guide column and a sliding shaft fixing plate are installed together, and the sliding shaft fixing plate and a telescopic shaft of the air cylinder are installed together. A lower template and a frame body are arranged on the sliding table, and a demolding block is arranged on the frame body; the sliding table is fixedly connected with the upper end of the telescopic rod; the hydraulic cylinder is arranged on the bottom plate; lower box demolding supporting legs are arranged on the bottom plate, a lower box demolding support is arranged at the upper ends of the lower box demolding supporting legs, and a lower box demolding adjusting shaft is arranged on the lower box demolding support and abuts against the lower portion of the demolding block. The device is novel and unique in structure, easy to operate, convenient to use, efficient, rapid and safe to use, and has actual application value.

Description

Technical Field

[0001] This invention relates to molding machinery, and in particular to a clay sand molding machine with two models, one on the top and one on the bottom. Background Technology

[0002] Currently, there are two main casting processes in the domestic casting machinery field: clay sand casting and coated sand casting. Clay sand casting primarily uses two types of equipment: vertical molding machines and horizontal molding machines. Vertical molding machines have the advantage of high molding speed (200-300 boxes / hour), but their disadvantages include the ability to produce only simple castings, a high risk of errors, large sand consumption, and an inability to produce high-end castings, significantly limiting the potential for high-end equipment development. Furthermore, the placement of cores during vertical production has resulted in numerous personal injury accidents, indicating a high risk factor. Horizontal molding machines have the advantage of being able to manufacture complex castings, but their speed is slow (generally 50-90 boxes / hour), the equipment is more complex, has a higher maintenance rate, and consumes a particularly large amount of sand. Coated sand casting, on the other hand, has the advantage of producing more complex workpieces and allowing for daytime molding and nighttime pouring. However, its disadvantages include the generation of harmful gases during shell making and pouring, which damages the ecological environment and harms the health of employees. Moreover, coated sand is generally only usable once, resulting in significant waste and secondary environmental pollution.

[0003] There are approximately 100,000 foundry enterprises in my country. Environmental protection alone could save billions of RMB in market value. While electricity consumption is also significant for the same output, the market demand for molding machines alone, assuming 10,000 units with a single unit value of 200,000-300,000 RMB, represents a market value of billions of RMB. Furthermore, this would drive the market for other supporting equipment, adding billions more in market flow. Given this situation, developing a high-speed molding machine (300-360 boxes / hour), capable of producing complex castings, replacing coated sand, being pollution-free, easy to operate, and allowing for sand reuse, is a crucial technical problem that needs serious attention. Summary of the Invention

[0004] In view of the above situation and to overcome the shortcomings of the existing technology, the purpose of this invention is to provide a clay sand molding machine with two models, one on the top and one on the bottom, which can effectively solve the problems of simple molding, production of high-difficulty castings, replacement of coated sand, no pollution, simple operation, and reusable sand.

[0005] The technical solution provided by this invention is: a clay sand molding machine with two molded models (top and bottom), comprising a base plate, columns, a top plate, a slide table, an upper molded plate, a lower molded plate, a cylinder, and a hydraulic cylinder. Two vertically upward columns are symmetrically fixed to both sides of the base plate via assembly holes. A top plate is fixed to the upper end of each column via column fixing nuts. A cylinder is mounted in the center of the top plate. Four evenly distributed, upward-facing guide sleeves are mounted on the top plate around the cylinder, and each guide sleeve contains a guide post penetrating the top plate. An upper pressure plate is connected to the bottom of the top plate, and an upper molded plate is fixedly mounted below the upper pressure plate. A downward-facing upper mold is mounted on the upper molded plate, and a hydraulic cylinder is mounted at the center of the upper molded plate. A vertically downward pouring cup (known technology) has a guide post with a sliding shaft locking nut and a sliding shaft fixing nut at the lower end, and a displacement box (frame) is tightly fitted onto the upper pressure plate's peripheral wall via a sealing ring. The displacement box and the upper pressure plate form an upper box with an opening facing downwards. The upper end of the guide post is fixed to a horizontal sliding shaft fixing plate via a locking nut. A cylinder mounted on the top plate is located in the middle of the sliding shaft fixing plate and is fixed to the cylinder's telescopic shaft via a cylinder fixing nut, allowing the displacement box to slide up and down, thus adjusting the amount of sand from loose to compacted. A sliding table is fitted onto the column between the top and bottom plates, and the sliding table has positioning holes. The positioning pin of the body passes downward through the mounting hole of the lower mold plate and is inserted into the slide table, while fixing the lower mold plate with the lower mold onto the slide table. A sand injection port is opened in the middle of the rear side wall of the frame. Four demolding modules are connected as one piece at the lower outer ends of the left and right sides of the frame. The frame and the lower mold plate form the lower box corresponding to the overrun box. The upper edge of the frame has bosses with positioning holes on the left and right sides. The center of the bottom of the slide table is connected and fixed to the upper end of the telescopic rod of the hydraulic cylinder. The hydraulic cylinder is mounted vertically upward on the center of the base plate, forming the up and down moving structure of the frame. Two symmetrical lower box demolding legs are provided on the base plate between the hydraulic cylinder and the two columns. The upper end of the lower mold release leg is equipped with a square frame-shaped lower mold release bracket. The four corners of the lower mold release bracket are equipped with vertically upward telescopic lower mold release adjustment shafts. The lower mold release adjustment shafts pass upward through the slide table and through hole and press against the lower part of the lower mold release module of the frame, forming the lower mold release structure of the lower mold. In use, the frame that has been separated from the upper and lower molds, together with the sand mold inside the frame, is transported to the auxiliary line by auxiliary equipment or manual labor (conventional operation). Multiple sand molds are stacked, and every two adjacent frames are inserted into the positioning hole by positioning pins to form a two-sided cavity. Molten iron can be poured in to manufacture castings without the need for a mold box.

[0006] This invention features a novel and unique structure, simple operation, convenient use, high efficiency and speed, with a production capacity of 300-360 boxes / hour. It can replace coated sand in the production of complex castings, is pollution-free, and the sand can be reused. During use, the clay core is placed far away from the moving parts of the molding machine and is not subject to any interference, making it safer to use and possessing practical application value. Attached Figure Description

[0007] Figure 1This is the front view of the present invention; Figure 2 This is a three-dimensional structural diagram of the present invention; Figure 3 This is a cross-sectional view of the upper housing of the present invention (cylinder 20 is not shown); Figure 4 This is an anatomical diagram of the lower housing of the present invention; Among them: 1-base plate, 1a-rectangular worktable, 2-column, 3-top plate, 3a-upper pressure plate, 3b-groove, 4-hydraulic cylinder, 5-telescopic rod, 6-slide table, 7-frame, 7a-fixing pin, 7b-detachable module, 7c-sand injection port, 8-lower mold plate, 8a-mounting hole, 8b-through hole, 9-slide shaft locking nut, 10-sealing ring, 11-overlapping box, 12-guide post, 13-slide sleeve, 14- - Sliding sleeve fixing plate, 15- Column fixing nut, 16- Guide sleeve, 17- Guide sleeve fixing seat, 18- Sliding shaft fixing nut, 19- Sliding shaft fixing plate, 20- Cylinder, 21- Cylinder fixing nut, 22- Lower mold, 23- Sprue cup, 24- Lower box demolding bracket, 25- Lower box demolding support leg, 26- Lower box demolding adjustment shaft, 27- Upper mold plate, 27a- Upper mold, 28- Lower box demolding support block. Detailed Implementation

[0008] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings and specific circumstances.

[0009] Depend on Figure 1-4 The present invention provides a clay sand molding machine with two molded models, including a base plate 1, columns 2, a top plate 3, a slide table 6, an upper molding plate 27, a lower molding plate 8, a cylinder 20, and a hydraulic cylinder 4. Vertically upward columns 2 are symmetrically fixed to both sides of the base plate 1 (left and right as shown in the figure) through assembly holes. The top plate 3 is fixed to the upper end of the columns 2 via column fixing nuts 15. A cylinder 20 is mounted in the center of the top plate 3. Four evenly distributed, upward-facing guide sleeves 16 are mounted on the top plate 3 around the cylinder 20, and guide posts 12 penetrating the top plate 3 are installed inside each guide sleeve 16. An upper pressure plate 3a (see figure) is connected to the bottom of the top plate 3. Figure 3As shown), an upper mold plate 27 is fixedly mounted below the upper pressure plate 3a. The upper mold plate 27 has a downward-facing upper mold 27a. A vertically downward-facing pouring cup 23 (known technology) is mounted at the center of the upper mold plate 27. An off-center box (frame) 11 is mounted on the lower end of the guide post 12 via a sliding shaft locking nut 9 and a sliding shaft fixing nut 18. The off-center box 11 is tightly fitted onto the peripheral wall of the upper pressure plate 3a via a sealing ring 10. The off-center box 11 and the upper pressure plate 3a form an upper box with an opening facing downwards. The upper end of the guide post 12 is fixedly mounted to a transverse sliding shaft fixing plate 19 via a locking nut. A vertically downward-facing pouring cup 23 is mounted on the lower part of the middle of the sliding shaft fixing plate 19. The cylinder 20 on the top plate 3 is fixedly installed with the telescopic shaft 20a of the cylinder 20 via the cylinder fixing nut 21, realizing the up and down sliding of the overshoot box 11 and completing the adjustment of the amount of sand from loose to solid. A slide table 6 is installed on the column 2 between the top plate 3 and the bottom plate 1 via the sliding sleeve 13. The slide table 6 is provided with positioning holes (not shown in the figure). The positioning pin 7a of the frame 7 passes downward through the lower mold plate mounting hole 8a and is inserted into the slide table 6. At the same time, the lower mold plate 8 with the lower mold 22 is fixed on the slide table 6. A sand injection port 7c is opened in the middle of the rear side wall of the frame 7. The lower outer sides of the left and right sides of the frame 7 are also sand injection ports. Four demolding modules 7b are connected at both ends. The frame 7 and the lower molded plate 8 form a lower box corresponding to the overrun box 11. The upper edge of the frame 7 has bosses with positioning holes 7d on both sides. The center of the lower part of the slide table 6 is connected and fixed to the upper end of the telescopic rod 5 of the hydraulic cylinder 4. The hydraulic cylinder 4 is mounted vertically upward on the center of the base plate 1, forming the up and down movement structure of the frame 7. Two symmetrical lower box demolding support legs 25 are provided on the base plate 1 between the hydraulic cylinder 4 and the two columns 2. The upper end of the lower box demolding support legs 25 is equipped with a square lower box demolding bracket 24. The four lower box demolding brackets 24 have four The lower mold release adjustment shaft 26, which has a vertically upward telescopic structure, is installed at the corner. The lower mold release adjustment shaft 26 passes upward through the slide table 6 and the through hole 8b and rests on the lower part of the release module 7b of the frame 7, forming the release structure of the lower mold. In use, the frame 7, which has been separated from the upper model 27a and the lower model 22, together with the sand mold inside the frame 7, is transported to the auxiliary line by auxiliary equipment or manual labor (normal operation). Multiple sand molds are stacked, and every two adjacent frames 7 are inserted into the positioning hole 7d by the positioning pin 7a, forming a two-sided cavity. Molten iron can be poured in without the need for a casing to manufacture castings.

[0010] To ensure effectiveness and ease of use, a rectangular worktable 1a extending on the same plane is provided on the base plate 1.

[0011] The top plate 3 has a groove 3b in the middle of its upper part, and the cylinder 20 is fixedly installed in the groove 3b.

[0012] There is a guide sleeve fixing seat 17 between the top plate 3 and the guide sleeve 16 to prevent the guide sleeve 16 from falling off.

[0013] The upper and lower ends of the sliding sleeve 13 that extend out of the slide table 6 are equipped with sliding sleeve fixing plates 14 to prevent the slide table 6 from detaching from the sliding sleeve 13.

[0014] A lower box demolding support block 28 is provided between the upper end of the lower box demolding adjustment shaft 26 and the demolding module 7b to reduce the pressure on the demolding module 7b and extend its service life.

[0015] The upper model 27a and the lower model 22 can be fitted with different models as needed to form a cavity for manufacturing the target casting.

[0016] In use, this invention is employed in conjunction with a separate control cabinet (such as a PLC control cabinet). The control cabinet is connected to the solenoid valves (not shown in the figure) of cylinder 20 and hydraulic cylinder 4 respectively to achieve automatic control (known technology, not included as protected content). During operation: 1. Install the upper mold plate 27 of the required model under the upper pressure plate 3a, and install the lower mold plate 8 of the required model on the slide table 6; 2. The telescopic rod 5 of the hydraulic cylinder 4 drives the slide table 6 to rise, so that the frame 7 contacts the overpass box 11. After leaving enough clay sand from loose to solid, stop. After the clay sand is injected from the sand injection port 7c at the back of the frame 7, the telescopic rod 5 continues to lift the slide table 6 to compact the sand block. Then the telescopic rod 5 of the hydraulic cylinder 4 falls and drives the slide table 6 to descend, completing the demolding of the sand mold. 3. When the slide table 6 descends to the top of the lower box demolding adjustment shaft 26, and the lower box demolding adjustment shaft 26 contacts the four demolding modules 7b of the frame 7, the sand mold stops on the lower box demolding adjustment shaft 26 along with the frame 7. The slide table 6 continues to descend, and the lower mold plate 8 separates from the bottom of the sand mold, thus completing the molding process.

[0017] At this point, the sand mold and frame 7 (hereinafter referred to as the product) after demolding are transported to the auxiliary line by auxiliary equipment or manual labor (routine operation). Multiple products are stacked, and each pair of adjacent products can form a two-sided cavity. Molten iron can be poured in without the need for a box, and castings can be manufactured.

[0018] Compared with the prior art, the present invention has the following technical advantages: 1. High speed: The model is installed on the upper mold plate 27 and the lower mold plate 8. When using this equipment for horizontal molding, each box takes between 8 and 12 seconds, which can reach 300 boxes per hour, or even 360 boxes per hour. 2. Easy to use: When used in conjunction with auxiliary equipment, it can achieve unmanned, automatic, and remote control; 3. Energy saving: The products produced by this invention use one sand mold and two cavities. Each pair of adjacent products can form a two-cavity mold, and multiple castings can be produced in one casting. Compared with the output of two sand molds to produce one casting in the traditional process, it greatly saves sand and electricity. In the clay sand casting process, the ratio of sand consumption to workpiece output is generally 10-12 / 1, that is, 10-12 tons of sand are needed to produce 1 ton of workpieces. This invention can produce 1 ton of workpieces with 3-3.5 tons of sand, which greatly reduces the casting cost. 4. Environmental protection: The product produced by this invention can replace many coated sand processes by superimposed casting, thereby reducing the waste gas generated during the production of coated sand and eliminating the pollution to the environment and atmosphere during the casting process of coated sand. 5. High output ratio: Under the same conditions, the molding cost of traditional molding machines is about 400-600 kWh / ton, while the molding cost of using this equipment is about 50-100 kWh / ton, and the net profit per kWh can reach 4-5 yuan. 6. Safety: Cores can be placed away from equipment, making it safer, and the core placement does not affect the molding time; 7. Saves space: The sand mold products produced by this invention can be stacked and poured, saving more space.

[0019] In summary, this invention features a novel and unique structure, simple operation, convenient use, high speed, and a production capacity of 300-360 boxes / hour, resulting in a high efficiency-to-output ratio and significantly reduced sand and electricity consumption. The resulting product can be cast using a single sand mold with two cavities, which can be repeatedly stacked and poured to achieve a single-piece integral cavity. This invention can replace coated sand in the production of complex castings, is pollution-free, and the sand can be reused. It represents a major innovation in mold-making machinery and has practical application value.

[0020] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly, 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 an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

Claims

1. A clay sand molding machine with two molded models, comprising a base plate (1), a column (2), a top plate (3), a slide table (6), an upper molding plate (27), a lower molding plate (8), a cylinder (20), and a hydraulic cylinder (4), characterized in that, The base plate (1) is symmetrically fixed with two vertically upward columns (2) on both sides through assembly holes. The top plate (3) is installed on the upper end of the columns (2) through column fixing nuts (15). A cylinder (20) is installed in the middle of the top plate (3). Four guide sleeves (16) are evenly distributed on the top plate (3) around the cylinder (20), and guide columns (12) penetrating the top plate (3) are installed in the guide sleeves (16). The lower part of the top plate (3) has an upper pressure plate (3a) connected together. An upper mold plate (27) is installed below the upper pressure plate (3a). The upper mold plate (27) has a downward upper mold (27a) on it. A vertically downward pouring cup (23) is installed in the center of the upper mold plate (27). The guide post (12) is fitted with a sliding shaft locking nut (9) and a sliding shaft fixing nut (18) at its lower end. The sliding shaft locking nut (9) and the sliding shaft fixing nut (18) are used to install the over-position box (11). The over-position box (11) is tightly fitted onto the periphery of the upper pressure plate (3a) by a sealing ring (10). The over-position box (11) and the upper pressure plate (3a) form an upper box with the opening facing downward. The upper end of the guide post (12) is fixed together with the sliding shaft fixing plate (19) by a locking nut. The center of the sliding shaft fixing plate (19) is fixed together with the telescopic shaft (20a) of the cylinder (20) by a cylinder fixing nut (21), so as to realize the up and down sliding of the over-position box (11) and complete the adjustment of the amount of sand from loose to solid. The column between the top plate (3) and the bottom plate (1) is used to install the over-position box (11). 2) The upper sliding sleeve (13) is equipped with a slide table (6), which has a positioning hole. The positioning pin (7a) of the frame (7) passes downward through the mounting hole (8a) of the lower mold plate and is inserted into the slide table (6). At the same time, the lower mold plate (8) with the lower mold (22) is fixed on the slide table (6). The center of the rear side wall of the frame (7) has a sand-shooting port (7c). The lower outer ends of the left and right sides of the frame (7) are respectively provided with four integrated detachment modules (7b). The frame (7) and the lower mold plate (8) form a lower box corresponding to the overpass box (11). The upper edge of the frame (7) has a boss with a positioning hole (7d) on the left and right sides. The center of the lower part of the slide table (6) is aligned with the lower mold plate (8). The upper end of the telescopic rod (5) of the hydraulic cylinder (4) is fixed. The hydraulic cylinder (4) is installed on the center of the base plate (1) to form the up-down moving structure of the frame (7). The base plate (1) between the hydraulic cylinder (4) and the two columns (2) is provided with two symmetrical lower box demolding legs (25). The upper end of the lower box demolding legs (25) is equipped with a square lower box demolding bracket (24). The lower box demolding bracket (24) is equipped with a lower box demolding adjustment shaft (26) with a vertical upward telescopic structure at each of the four corners. The lower box demolding adjustment shaft (26) passes upward through the slide (6) and the through hole (8b) and hits the lower part of the demolding module (7b) of the frame (7) to form the demolding structure of the lower box.In use, the frame (7), detached from the upper model (27a) and lower model (22), along with the sand mold inside the frame (7), is transported to the auxiliary line by auxiliary equipment or manually. Multiple sand molds are stacked, and every two adjacent frames (7) are inserted into the positioning holes (7d) via positioning pins (7a), forming a two-sided cavity. Molten iron can be poured in without the need for a casing to manufacture castings.

2. The clay sand molding machine for upper and lower two-piece models according to claim 1, characterized in that, The base plate (1) is provided with a rectangular worktable (1a) extending in the same plane.

3. The clay sand molding machine for upper and lower two-piece models according to claim 1, characterized in that, The top plate (3) has a groove (3b) in the middle of its upper part, and the cylinder (20) is fixedly installed in the groove (3b).

4. The clay sand molding machine for upper and lower two-piece models according to claim 1, characterized in that, There is a guide sleeve fixing seat (17) between the top plate (3) and the guide sleeve (16) to prevent the guide sleeve (16) from falling off.

5. The clay sand molding machine for upper and lower two-piece models according to claim 1, characterized in that, The upper and lower ends of the slide sleeve (13) extending out of the slide table (6) are equipped with slide sleeve fixing plates (14) to prevent the slide table (6) from separating from the slide sleeve (13).

6. The clay sand molding machine for upper and lower two-piece models according to claim 1, characterized in that, The lower box demolding adjustment shaft (26) is provided with a lower box demolding support block (28) between its upper end and the demolding module (7b) to reduce the pressure on the demolding module (7b) and extend its service life.

7. The clay sand molding machine for upper and lower two-piece models according to claim 1, characterized in that, The upper model (27a) and the lower model (22) can be equipped with different models as needed to form a cavity for manufacturing the target casting.

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