Sand pressing mechanism for a molding machine

Abstract

The utility model discloses a sand pressing mechanism for molding machine, including the molding platform, the top of molding platform is equipped with the molding frame, the top of molding platform is equipped with sand pressing mechanism, and sand pressing mechanism includes mounting bracket, motor, screw rod, through slot, fixed plate and pressing plate, one side fixed mounting of molding platform has the mounting bracket, and one side of mounting bracket is equipped with the through slot, and the top fixed mounting of mounting bracket has the motor, and the output shaft fixed mounting of motor has and mounting bracket interpenetration connection's screw rod, and the outer ring screw connection of screw rod has and the fixed plate of through slot adaptation, and the bottom fixed mounting of fixed plate has the pressing plate, and the pressing plate is used for the sand mould in molding frame to carry out the pressure tight. Through sand pressing mechanism, molding frame, mounting groove and baffle etc. Structure mutual cooperation, when starting motor, can make fixed plate move downward in through slot, and will drive the pressing plate to the sand material scraped flat in molding frame and carry out the material pressure, thereby can carry out sand pressing setting.

Description

Technical Field

[0001] This utility model relates to the technical field of sand pressing mechanisms, specifically a sand pressing mechanism for a molding machine. Background Technology

[0002] Molding machines are mainly used in the casting industry. When molding sand and gravel, a molding machine with a sand pressing mechanism is required.

[0003] Currently, molding machines typically shape sand by lifting the molding frame upwards and pressing it against a pressure plate. However, this method, requiring the molding frame to be lifted during extrusion, can lead to tilting or shifting, resulting in uneven extruded sand and reduced quality. Furthermore, the lack of leveling the sand on top of the molding frame before shaping can also result in an uneven surface after sand pressing, further lowering quality. The demolding and part removal processes after sand molding are well-established and known processes in the casting molding field, and are not the technical problems this invention aims to solve. Utility Model Content

[0004] To address the aforementioned issues, the purpose of this invention is to provide a sand pressing mechanism for a molding machine. This mechanism focuses on structural improvements to the sand pressing, leveling, and anti-deviation clamping stages of the molding machine, thus resolving the defects of the top frame being prone to deviation during extrusion and lacking a pre-scraping sand structure in the aforementioned background technology. The sand mold demolding and part removal can be achieved using an industry-standard demolding structure, eliminating the need for additional material removal components in this mechanism.

[0005] To achieve the above objectives, this utility model proposes a sand pressing mechanism for a molding machine, including a molding table, the top of which is provided with a molding frame; The top of the molding platform is equipped with a sand pressing mechanism, which includes a mounting frame, a motor, a lead screw, a through groove, a fixing plate, and a pressure plate. A mounting frame is fixedly installed on one side of the molding platform, and a through groove is opened on one side of the mounting frame. A motor is fixedly installed on the top of the mounting frame, and a lead screw that is inserted and connected to the mounting frame is fixedly installed on the output shaft of the motor. A fixing plate that is adapted to the through groove is threaded to the outer ring of the lead screw. A pressure plate is fixedly installed on the bottom of the fixing plate. The pressure plate is used to press the sand mold in the molding frame.

[0006] In one example, an electric cylinder is fixedly mounted on one side of the molding platform, and a movable plate is fixedly mounted on the output shaft of the electric cylinder.

[0007] In one example, a scraper that fits against the top of the shaping frame is fixedly installed on the top of the movable plate, and a limiting plate is fixedly installed on the bottom of the scraper.

[0008] In one example, a limiting groove is provided on one side of the shape frame, and a limiting block fixed to the limiting plate is slidably connected to the inner wall of the limiting groove.

[0009] In one example, two mounting slots are formed on the inner side of the inner wall of the frame, and partitions are slidably connected to the inner walls of both mounting slots.

[0010] In one example, the bottom of the modeling stand is fixedly equipped with four casters.

[0011] The sand pressing mechanism for a molding machine proposed in this utility model can bring the following beneficial effects: 1. The sand pressing mechanism for the molding machine, through the cooperation of the sand pressing mechanism, molding frame, mounting groove and partition, etc., when the motor is started, the fixing plate can move downward in the through groove, which will drive the pressure plate to press the sand material scraped in the molding frame, thereby pressing and shaping it.

[0012] 2. This sand-pressing mechanism for a molding machine uses an electric cylinder to move a moving plate, which in turn moves a scraper on top of the molding frame. This scrapes the sand on top of the molding frame level, preventing unevenness during sand pressing and ensuring the quality of the sand. This mechanism can be used in conjunction with industry-standard split molding frames and bottom ejection demolding mechanisms to smoothly complete the sand mold removal operation. Attached Figure Description

[0013] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the frame structure of this utility model; Figure 3 This is a schematic diagram of the pressure plate structure of this utility model; Figure 4 This is a schematic diagram of the scraper structure of this utility model; Figure 5 This is a schematic diagram of the limiting plate structure of this utility model.

[0014] In the diagram: 1. Shaping platform; 2. Shaping frame; 3. Pressure plate; 4. Fixing plate; 5. Through groove; 6. Lead screw; 7. Motor; 8. Mounting bracket; 9. Electric cylinder; 10. Moving plate; 11. Scraper; 12. Limiting plate; 13. Mounting groove; 14. Partition; 15. Limiting groove; 16. Limiting block; 17. Casters. Detailed Implementation

[0015] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0016] like Figures 1-5 As shown, an embodiment of this utility model proposes a sand pressing mechanism for a molding machine, including a molding table 1, and a molding frame 2 is provided on the top of the molding table 1; The top of the molding table 1 is equipped with a sand pressing mechanism, which includes a mounting frame 8, a motor 7, a lead screw 6, a through groove 5, a fixing plate 4, and a pressure plate 3. The mounting frame 8 is fixedly installed on one side of the molding table 1. A through groove 5 is opened on one side of the mounting frame 8. The motor 7 is fixedly installed on the top of the mounting frame 8. The output shaft of the motor 7 is fixedly installed with a lead screw 6 that is inserted and connected to the mounting frame 8. The outer ring of the lead screw 6 is threadedly connected to a fixing plate 4 that is compatible with the through groove 5. The pressure plate 3 is fixedly installed on the bottom of the fixing plate 4. The pressure plate 3 is used to press the sand mold in the molding frame 2.

[0017] Specifically, an electric cylinder 9 is fixedly installed on one side of the molding platform 1. A movable plate 10 is fixedly installed on the output shaft of the electric cylinder 9. The movable plate 10 is moved by the electric cylinder 9, and the movement of the movable plate 10 causes the scraper 11 to scrape the sand on the top of the molding frame 2.

[0018] Specifically, a scraper 11 that fits against the top of the shaping frame 2 is fixedly installed on the top of the movable plate 10, and a limiting plate 12 is fixedly installed on the bottom of the scraper 11. The scraper 11 scrapes the sand on the top of the shaping frame 2, and the limiting plate 12 limits the movement of the scraper 11.

[0019] Specifically, a limiting groove 15 is provided on one side of the shape frame 2. A limiting block 16 fixed to the limiting plate 12 is slidably connected to the inner wall of the limiting groove 15. The limiting plate 12 is limited by the limiting block 16 slidably connected to the limiting groove 15.

[0020] Specifically, two mounting slots 13 are provided on the inner side of the inner wall of the shaping frame 2. The inner walls of the two mounting slots 13 are slidably connected with partitions 14. The partitions 14 are installed and secured by the mounting slots 13. The partitions 14 block one side of the shaping frame 2, which facilitates the sand molding.

[0021] Specifically, four casters 17 are fixedly installed at the bottom of the styling table 1, which facilitates the movement of the styling table 1.

[0022] Working principle: The partition 14 is installed in the mounting groove 13, forming a closed space with the molding frame 2. Then, the sand is poured in, and the electric cylinder 9 is started to move the moving plate 10, which in turn moves the scraper 11 to scrape the sand on the top of the molding frame 2, making it easier to press and shape it later. At the same time, when the scraper 11 moves, it moves the limiting plate 12, which will cause the limiting block 16 to slide in the limiting groove 15, limiting the movement of the scraper 11 and better scraping the sand on the top of the molding frame 2. After it is scraped, the motor 7 is started to drive the lead screw 6 to rotate, which causes the fixing plate 4 to move downward in the through groove 5, which will drive the pressure plate 3 to squeeze the sand in the molding frame 2, thereby pressing and shaping the sand in the molding frame 2.

[0023] After the sand pressing and shaping are completed, the operator can remove the sand mold using conventional methods in the casting field: the molding frame can be set as a detachable split structure, and the sand mold can be directly removed after the side wall of the frame is separated; or a universal lifting and ejection mechanism can be equipped at the bottom of the molding table to lift the sand mold upward to complete the demolding. The above demolding structures are all well-known technologies in the field and do not affect the normal implementation of this sand pressing mechanism.

[0024] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

[0025] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A sand pressing mechanism for a molding machine, comprising a molding table (1), wherein a molding frame (2) is provided on the top of the molding table (1); Its features are: The top of the molding platform (1) is provided with a sand pressing mechanism, which includes a mounting frame (8), a motor (7), a lead screw (6), a through groove (5), a fixing plate (4), and a pressure plate (3). The mounting frame (8) is fixedly installed on one side of the molding platform (1). A through groove (5) is opened on one side of the mounting frame (8). The motor (7) is fixedly installed on the top of the mounting frame (8). The output shaft of the motor (7) is fixedly installed with a lead screw (6) that is inserted and connected to the mounting frame (8). The outer ring of the lead screw (6) is threadedly connected with a fixing plate (4) that is compatible with the through groove (5). The bottom of the fixing plate (4) is fixedly installed with a pressure plate (3). The pressure plate (3) is used to press the sand mold in the molding frame (2).

2. The sand-pressing mechanism for a molding machine according to claim 1, characterized in that: An electric cylinder (9) is fixedly installed on one side of the molding platform (1), and a moving plate (10) is fixedly installed on the output shaft of the electric cylinder (9).

3. The sand pressing mechanism for a molding machine according to claim 2, characterized in that: The top of the movable plate (10) is fixedly installed with a scraper (11) that fits against the top of the shaping frame (2), and the bottom of the scraper (11) is fixedly installed with a limiting plate (12).

4. The sand pressing mechanism for a molding machine according to claim 3, characterized in that: A limiting groove (15) is provided on one side of the shape frame (2), and a limiting block (16) fixed to the limiting plate (12) is slidably connected to the inner wall of the limiting groove (15).

5. The sand-pressing mechanism for a molding machine according to claim 1, characterized in that: The inner wall of the frame (2) has two mounting slots (13), and the inner walls of the two mounting slots (13) are slidably connected with partitions (14).

6. The sand pressing mechanism for a molding machine according to claim 1, characterized in that: The bottom of the modeling platform (1) is fixedly equipped with four casters (17).

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