Sand mold casting pouring device for machine tool accessories

Abstract

A sand mold casting pouring device for machine tool accessories relates to the technical field of sand mold casting and comprises a longitudinal adjusting device, a transverse adjusting device is movably mounted above the longitudinal adjusting device, a sand box placing table is movably mounted above the transverse adjusting device, supporting frames are arranged on two sides above the rear end of the longitudinal adjusting device, and the supporting frames are connected with the transverse adjusting device. A limiting barrel is arranged between the two supporting frames, a casting ladle is movably installed in the limiting barrel, dip angle adjusting rods are fixedly installed on the two sides of the limiting barrel correspondingly, the other ends of the dip angle adjusting rods are connected with the supporting frames through bearings, and a casting channel is arranged below the front end of the limiting barrel. According to the scheme, the problem that the sand mold casting pouring device cannot be flexibly adjusted according to the positions of different sprues on a sand core is solved.

Description

Technical Field

[0001] This utility model relates to the field of sand casting technology, specifically to a sand casting pouring device for machine tool accessories. Background Technology

[0002] The sand casting pouring device for machine tool parts typically consists of a ladle, a pouring control system, and a positioning and guiding mechanism. The ladle holds the high-temperature molten metal and its design must ensure good heat retention and smooth pouring. The pouring control system precisely regulates the pouring speed and volume, ensuring the molten metal is injected into the sand mold according to predetermined process requirements, avoiding defects such as incomplete pouring or cold shuts. The positioning and guiding mechanism ensures the ladle's accurate position and stable operation during the pouring process.

[0003] For example, the Chinese authorized patent CN117182053A, entitled "A Sand Casting Pour Device", includes a base, a pouring railcar, a drive assembly, a distance detector, and a control box. The base is provided with a guide rail, the pouring railcar is mounted on the guide rail, and the pouring railcar can move along the guide rail; the drive assembly is mounted on the pouring railcar, and the distance detector is mounted on the pouring railcar; the control box is mounted on the base and is simultaneously connected to the drive assembly and the distance detector.

[0004] While the existing technology can achieve the casting of sand cores for machine tool parts, it has poor flexibility and cannot be adjusted according to the position of different gates on the sand core, which affects both casting efficiency and the safety of actual operation. Therefore, it does not meet the current needs. In response, we propose a sand casting casting device for machine tool parts. Utility Model Content

[0005] The purpose of this utility model is to provide a sand casting pouring device for machine tool accessories, so as to solve the problem mentioned in the background art that the sand casting pouring device cannot be flexibly adjusted according to the position of different gates on the sand core.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a sand casting casting apparatus for machine tool accessories, comprising a longitudinal adjustment device, a transverse adjustment device movably mounted above the longitudinal adjustment device, a sand box placement platform movably mounted above the transverse adjustment device, support frames on both sides above the rear end of the longitudinal adjustment device, a limiting cylinder between the two support frames, a casting ladle movably mounted inside the limiting cylinder, tilt adjustment rods fixedly mounted on both sides of the limiting cylinder, and the other end of the tilt adjustment rods connected to the support frame via bearings, a casting channel provided below the front end of the limiting cylinder, and the casting channel fixed to the support frame via a fixing frame.

[0007] Preferably, a first servo motor is fixedly installed on the upper end of the side of the support frame, and the output group of the first servo motor is connected to the tilt adjustment rod through a coupling.

[0008] Preferably, both the longitudinal adjustment device and the lateral adjustment device include a base, a screw is rotatably mounted inside the base, and a threaded sliding block is mounted outside the screw. The sliding block in the longitudinal adjustment device is fixed to the base of the lateral adjustment device, and the sliding block in the lateral adjustment device is fixed to the bottom of the sand box placement platform. A second servo motor for driving the screw is mounted on one side inside the base.

[0009] Preferably, guide seats are fixedly provided on both sides of the upper surface of the base, the bottom of the lateral adjustment device is provided with a guide groove that slides and engages with the guide seat on the longitudinal adjustment device, and the bottom of the sand box placement platform is provided with a guide groove that slides and engages with the guide seat on the lateral adjustment device.

[0010] Preferably, a filter cylinder is installed inside the pouring channel, and the filter cylinder is slidably connected to the pouring channel. The bottom of the pouring channel is provided with an inner boss to support the filter cylinder. The filter cylinder is provided with a plurality of equidistant silicon carbide sheets inside, and the silicon carbide sheets are provided with a plurality of through holes inside. The side of the filter cylinder is provided with a plurality of opening grooves.

[0011] Preferably, the rear end of the limiting cylinder is fitted with a threaded fastening bolt, and one end of the fastening bolt is inserted into the ladle.

[0012] Preferably, baffles are provided on both sides of the upper surface of the sand box placement platform.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model can move large sand boxes in and out and adjust the position of the gating gate. The longitudinal adjustment device and the transverse adjustment device are both composed of a base, a screw, a sliding block and a second servo motor. By turning on the second servo motor, the output shaft drives the screw to rotate. Under the frictional cooperation with the sliding block, the rotational motion is converted into linear motion, thereby moving the corresponding contact position through the sliding block. Therefore, before pouring, the sand box is placed on the sand box placement platform by the hoisting device. Driven by the longitudinal adjustment device, the sand box placement platform can be moved to the pouring position. Then, with the cooperation of the longitudinal adjustment device and the transverse adjustment device, the position of the gating gate facing the pouring channel is continuously switched, thereby realizing fast and safe pouring work.

[0015] 2. This utility model features a convenient pouring mechanism. A ladle containing high-temperature liquid metal is placed behind a limiting cylinder. By rotating the fastening bolts, the ladle is fixed inside the limiting cylinder. By activating the first servo motor, the output shaft drives the ladle to adjust its angle via an angle adjustment rod, thereby pouring the liquid metal into the pouring channel. The liquid metal accurately enters the gating gate of the sand core through the pouring channel. Simultaneously, the pouring speed is adjusted by controlling the angle of the angle adjustment rod. This design reduces the number of manual operations involving direct contact with the high-temperature ladle and liquid metal, lowering the risk of burns or injuries caused by splashing liquid metal due to improper operation.

[0016] 3. This invention features a detachable filter cylinder installed inside the gating system. The filter cylinder contains multiple equidistantly distributed silicon carbide sheets. The numerous through-holes on the silicon carbide sheets effectively block molten slag from the liquid metal, ensuring higher purity of the liquid metal entering the sand mold. This significantly reduces the possibility of molten slag contaminating the casting, substantially improving casting quality. Furthermore, the silicon carbide sheets possess high strength, high temperature resistance, and wear resistance, maintaining stable performance even under prolonged exposure to high-temperature liquid metal. The effective filtration of molten slag by the filter cylinder reduces wear and erosion of the gating system and subsequent sand mold components. When cleaning is required, the filter cylinder can be easily disassembled to remove the metal slag blocked on the silicon carbide sheets. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present utility model;

[0018] Figure 2 This is a top view of the present invention;

[0019] Figure 3 This is a schematic diagram of the transmission structure of the adjustment device of this utility model;

[0020] Figure 4 This is a sectional perspective view of the pouring channel and filter cylinder of this utility model.

[0021] In the diagram: 1. Longitudinal adjustment device; 2. Lateral adjustment device; 3. Sand box placement platform; 4. Support frame; 5. Inclination adjustment rod; 6. First servo motor; 7. Limiting cylinder; 8. Ladle; 9. Fixing frame; 10. Casting channel; 11. Filter cylinder; 12. Fastening bolt; 13. Base; 14. Screw; 15. Sliding block; 16. Second servo motor; 17. Guide seat; 18. Silicon carbide sheet; 19. Opening slot; 20. Inner boss. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Please see Figure 1-4 An embodiment of this utility model provides a sand casting casting apparatus for machine tool accessories, including a longitudinal adjustment device 1, a transverse adjustment device 2 movably installed above the longitudinal adjustment device 1, a sand box placement platform 3 movably installed above the transverse adjustment device 2, baffles on both sides of the upper surface of the sand box placement platform 3, support frames 4 on both sides above the rear end of the longitudinal adjustment device 1, a limiting cylinder 7 between the two support frames 4, a casting ladle 8 movably installed inside the limiting cylinder 7, tilt adjustment rods 5 fixedly installed on both sides of the limiting cylinder 7, and the other end of the tilt adjustment rods 5 connected to the support frame 4 through a bearing, a casting channel 10 is provided below the front end of the limiting cylinder 7, and the casting channel 10 is fixed to the support frame 4 through a fixing frame 9, a first servo motor 6 is fixedly installed on the upper side of the support frame 4, and the output group of the first servo motor 6 is driven by the tilt adjustment rod 5 through a coupling.

[0024] During the pouring operation, the hoisting device first places the sand box containing the pouring material onto the sand box placement platform 3. The first servo motor 6 plays a crucial role. After the first servo motor 6 is powered on, its output shaft begins to rotate. Since the output shaft and the tilt adjustment rod 5 are driven by a coupling, the tilt adjustment rod 5 rotates around the bearing connected to the support frame 4 after receiving the rotational power. Because the limiting cylinder 7 is fixedly installed on the tilt adjustment rod 5, as the tilt adjustment rod 5 rotates, the limiting cylinder 7 also rotates synchronously around the bearing axis, thereby causing the pouring ladle 8 inside the limiting cylinder 7 to change its angle. When the pouring ladle 8 tilts to the appropriate angle, the liquid metal inside will flow into the pouring channel 10 below along the set path.

[0025] Please see Figure 1 and Figure 3 Both the longitudinal adjustment device 1 and the transverse adjustment device 2 include a base 13. A screw 14 is rotatably mounted inside the base 13, and a threaded sliding block 15 is mounted outside the screw 14. The sliding block 15 in the longitudinal adjustment device 1 is fixed to the base 13 of the transverse adjustment device 2, and the sliding block 15 in the transverse adjustment device 2 is fixed to the bottom of the sand box placement platform 3. A second servo motor 16 for driving the screw 14 is mounted on one side inside the base 13.

[0026] When the position of the sand box placement platform 3 needs to be adjusted, the second servo motor 16 is activated. After the second servo motor 16 is powered on, its output shaft drives the screw 14 connected to it to rotate inside the base 13. Since the sliding block 15 and the screw 14 are threadedly connected, according to the principle of thread transmission, when the screw 14 rotates, the sliding block 15 will move linearly along the axis of the screw 14 under the action of the thread. In the longitudinal adjustment device 1, its sliding block 15 is fixedly connected to the base 13 of the transverse adjustment device 2. Therefore, when the screw 14 in the longitudinal adjustment device 1 rotates and drives the sliding block 15 to move linearly, it will push the transverse adjustment device 2 as a whole to move in the longitudinal direction. Similarly, in the transverse adjustment device 2, its sliding block 15 is fixed to the bottom of the sand box placement platform 3. When the screw 14 in the transverse adjustment device 2 rotates and drives the sliding block 15 to move linearly, it will push the sand box placement platform 3 to move in the transverse direction. By controlling the rotation direction and speed of the second servo motor 16 in both directions, the longitudinal and transverse positions of the sand box placement platform 3 can be precisely controlled.

[0027] Please see Figure 1 and Figure 3 Guide seats 17 are fixed on both sides of the upper surface of the base 13. The bottom of the transverse adjustment device 2 is provided with a guide groove that slides in cooperation with the guide seat 17 on the longitudinal adjustment device 1. The bottom of the sand box placement platform 3 is provided with a guide groove that slides in cooperation with the guide seat 17 on the transverse adjustment device 2.

[0028] When the sliding block 15 in the longitudinal adjustment device 1 moves the lateral adjustment device 2 in the longitudinal direction, the guide groove at the bottom of the lateral adjustment device 2 slides along the guide seat 17 on the longitudinal adjustment device 1, providing precise guidance for the movement of the lateral adjustment device 2. Similarly, when the sliding block 15 in the lateral adjustment device 2 moves the sand box placement platform 3 in the lateral direction, the guide groove at the bottom of the sand box placement platform 3 slides along the guide seat 17 on the lateral adjustment device 2. Throughout the movement, the guide seat 17 always restricts and guides the guide groove, ensuring that the lateral adjustment device 2 and the sand box placement platform 3 can only move along a predetermined straight line, avoiding deviation or shaking.

[0029] Please see Figure 1 and Figure 4 The inside of the pouring channel 10 is equipped with a filter cylinder 11, and the filter cylinder 11 is slidably connected to the pouring channel 10. The bottom of the pouring channel 10 is provided with an inner boss 20 to support the filter cylinder 11. The inside of the filter cylinder 11 is provided with a plurality of equidistant silicon carbide sheets 18, and the inside of the silicon carbide sheets 18 is provided with a plurality of through holes. The side of the filter cylinder 11 is provided with a plurality of opening slots 19.

[0030] During the pouring process, the molten metal flowing from the ladle 8 first enters the gating channel 10. As the molten metal flows through the gating channel 10, it passes sequentially through multiple equidistantly distributed silicon carbide wafers 18 inside the filter cylinder 11. Because the silicon carbide wafers 18 possess high temperature resistance, high strength, and excellent filtration performance, their multiple through-hole designs effectively prevent impurities such as molten slag from passing through. These impurities are trapped on the surface of the silicon carbide wafers 18 as they flow through them. As pouring continues, when cleaning of the filter cylinder 11 is required, the filter cylinder 11 is slidably connected to the gating channel 10, and the bottom of the gating channel 10 has an inner boss 20 supporting the filter cylinder 11. Operators can easily pull the filter cylinder 11 out of the gating channel 10 through the opening slot 19 on its side. After extraction, the metal slag trapped on the silicon carbide wafer 18 can be cleaned. After cleaning, the filter cartridge 11 can be reinstalled back into the casting channel 10.

[0031] Please see Figure 2 The rear end of the limiting cylinder 7 is fitted with a threaded fastening bolt 12, one end of which is inserted into the pouring ladle 8. After the pouring ladle 8 is placed inside the limiting cylinder 7, it needs to be fixed to ensure that it does not shift or shake during the pouring process. At this time, the operator rotates the fastening bolt 12. Because the fastening bolt 12 is threaded into the rear end of the limiting cylinder 7, it moves forward gradually along the thread direction as the bolt 12 rotates. When one end of the fastening bolt 12 is inserted into the corresponding insertion position on the pouring ladle 8, the pouring ladle 8 is fixed inside the limiting cylinder 7. After pouring is completed, the fastening bolt 12 is rotated in the opposite direction to remove it from the pouring ladle 8, allowing the pouring ladle 8 to be removed from the limiting cylinder 7.

[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A sand casting pouring rig for machine tool accessories, comprising longitudinal adjustment means (1), characterised in that: A transverse adjustment device (2) is movably installed above the longitudinal adjustment device (1), and a sand box placement platform (3) is movably installed above the transverse adjustment device (2). Support frames (4) are provided on both sides above the rear end of the longitudinal adjustment device (1). A limiting cylinder (7) is provided between the two support frames (4). A pouring ladle (8) is movably installed inside the limiting cylinder (7). An angle adjustment rod (5) is fixedly installed on both sides of the limiting cylinder (7), and the other end of the angle adjustment rod (5) is connected to the support frame (4) through a bearing. A pouring channel (10) is provided below the front end of the limiting cylinder (7), and the pouring channel (10) is fixed to the support frame (4) through a fixing frame (9).

2. The sand casting casting apparatus for machine tool accessories according to claim 1, characterized in that: The upper end of the side of the support frame (4) is fixedly installed with a first servo motor (6), and the output group of the first servo motor (6) is connected to the tilt adjustment rod (5) through a coupling.

3. A sand mould casting sprue bushing for machine tool accessories according to claim 1, characterised in that: Both the longitudinal adjustment device (1) and the lateral adjustment device (2) include a base (13). A screw (14) is rotatably mounted inside the base (13). A threaded sliding block (15) is mounted outside the screw (14). The sliding block (15) in the longitudinal adjustment device (1) is fixed to the base (13) of the lateral adjustment device (2). The sliding block (15) in the lateral adjustment device (2) is fixed to the bottom of the sand box placement platform (3). A second servo motor (16) for driving the screw (14) is installed on one side inside the base (13).

4. A sand mould casting sprue bushing for machine tool accessories according to claim 3, characterised in that: Guide seats (17) are fixed on both sides of the upper surface of the base (13). The bottom of the transverse adjustment device (2) is provided with a guide groove that slides with the guide seat (17) on the longitudinal adjustment device (1). The bottom of the sand box placement platform (3) is provided with a guide groove that slides with the guide seat (17) on the transverse adjustment device (2).

5. A sand mould casting sprue bushing for machine tool accessories according to claim 1, characterised in that: The casting channel (10) is equipped with a filter cylinder (11), and the filter cylinder (11) is slidably connected to the casting channel (10). The bottom of the casting channel (10) is provided with an inner boss (20) to support the filter cylinder (11). The filter cylinder (11) is provided with a plurality of equidistant silicon carbide wafers (18), and the silicon carbide wafers (18) are provided with a plurality of through holes. The side of the filter cylinder (11) is provided with a plurality of opening slots (19).

6. A sand mould casting sprue bushing for machine tool accessories according to claim 1, characterised in that: The rear end of the limiting cylinder (7) is fitted with a threaded fastening bolt (12), and one end of the fastening bolt (12) is inserted into the ladle (8).

7. A sand casting gating system for machine tool accessories according to claim 1, wherein: The sand box placement platform (3) has baffles on both sides of its upper surface.

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