Lost foam casting molding sand treatment device
The lost foam casting sand processing device addresses uneven wall thickness and inefficient screening by using a trapezoidal bin, rotating sand holes, and a motor-driven pulley system to efficiently crush and recycle sand, improving casting quality and efficiency.
Patent Information
- Application Number
- CN202323396755.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-13
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2033-12-13
AI Technical Summary
Existing lost foam casting processes face issues with uneven wall thickness in castings due to inaccurate sand core size or position, and existing sand screening devices are inefficient in handling large pieces of molding sand, leading to prolonged screening times and reduced efficiency.
A lost foam casting sand processing device with a trapezoidal bin, rolling and gas rods for preliminary screening, a sand screening bucket with rotating sand holes, and a high-density screen for fine screening, along with a second motor-driven pulley system for efficient sand recycling and waste separation.
The device effectively crushes large pieces of sand, recycles small pieces, and separates waste sand, enhancing sand recovery efficiency and practicality by reducing the time required for screening and preventing large pieces from affecting subsequent processes.
Smart Images
Figure CN222153832U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of lost foam casting, in particular to a lost foam casting sand processing device. Background Art
[0002] Lost foam casting (also known as full mold casting) is a new casting method that combines paraffin or foam models with similar size and shape to the casting into a model cluster, brushes refractory coating and dries it, buries it in dry quartz sand for vibration molding, pours it under negative pressure, vaporizes the model, and the liquid metal occupies the position of the model. After solidification and cooling, it forms a casting. In the prior art, there are two ways to produce giant electrodes. The first is the traditional casting method. The electrodes produced have uneven wall thickness of the casting due to inaccurate sand core size or inaccurate lower core position. The second is the lost foam casting process. Although it solves the problem of uneven wall thickness of the casting caused by inaccurate sand core size or inaccurate lower core position, the amount of casting sand used is very large. In order to reduce the cost of casting sand, the used casting sand needs to be screened after being processed and reused. The existing sand screening device only has a simple screen mesh that reciprocates to screen the sand. When encountering large pieces of molding sand, the sand screening time is greatly prolonged, which affects the efficiency.
[0003] Therefore, it is necessary to design a lost foam casting sand processing device which is highly practical and can screen sand. Utility Model Content
[0004] The utility model aims to provide a lost foam casting sand processing device to solve the problems raised in the above background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a lost foam casting sand processing device, comprising a trapezoidal bin and a base, a partition is arranged inside the trapezoidal bin, a transmission bin is arranged outside the trapezoidal bin, a first motor is fixedly installed on the outside of the transmission bin, a rolling rod is fixedly installed on the output shaft end of the first motor, the other end of the rolling rod is connected to the trapezoidal bin bearing, a cylinder is fixedly installed on the outside of the transmission bin, a gas rod is slidably connected inside the cylinder, a transfer block is connected to the top bearing of the gas rod, a transfer rod is arranged inside the transmission bin, the transfer rod and the transfer block are fixedly connected to each other, a sand screening bucket is fixedly installed on the inner side of the transfer rod, and one side of the sand screening bucket is connected to the trapezoidal bin by bearings.
[0006] According to the above technical solution, a sand outlet is provided at the bottom of the trapezoidal bin, a slide rail is fixedly installed above the base, a sand screening bin is slidably connected above the slide rail, a high-density screen is fixedly installed inside the sand screening bin, a waste sand partition is fixedly installed on the front side of the sand screening bin, and a recovery bin is provided above the base.
[0007] According to the above technical solution, a second motor is fixedly installed above the base, a first pulley is fixedly installed at the output end of the second motor, a belt is wound around the outer side of the first pulley, a support frame is provided on the rear side of the slide rail, a first support block is fixedly installed above the support frame, a second support block is fixedly installed above the support frame, a second pulley is connected to the intermediate bearing of the first support block and the second support block, the belt and the second pulley are connected to each other, an extension rod is fixedly installed on the left side of the support shaft of the second pulley, one end of the extension rod is connected to a connecting frame with a bearing, and the connecting frame and the sand screening bin are connected to each other with bearings.
[0008] Compared with the prior art, the beneficial effects achieved by the utility model are:
[0009] (1) By setting up a trapezoidal bin, workers need to pour the finished molding sand from the top of the trapezoidal bin. The first motor starts to drive the internal grinding rod to rotate, and the large pieces of molding sand are initially crushed. At the same time, the cylinder starts to drive the internal gas rod to reciprocate in the cylinder. When the gas rod extends outward, it drives the adapter block connected to the bearing to rotate downward. When the gas rod retracts, it drives the adapter block to rotate. The adapter block drives the internal sand screening bucket through the adapter rod to follow the square rotation of the adapter block and then rotate in the opposite direction. When the reserved sand holes of the sand screening bucket face upward, the broken sand will fall into the sand screening bucket. When the sand screening bucket rotates, the sand will become scattered again. Finally, when the sand holes face downward, the sand will fall from the sand holes, thereby crushing the large pieces of sand for recycling. At the same time, most of the broken pieces become small pieces through crushing and rotation. If the sand cannot pass through the sand holes and enter the sand screening bucket, it will be repeatedly crushed by the rolling rod, thereby preventing large pieces of sand from falling into subsequent projects, thereby affecting the sand recovery efficiency.
[0010] (2) By providing a sand screening bin, the crushed sand will fall into the sand screening bin through the sand outlet, and the sand screening bin will repeatedly shake back and forth on the slide rail. The small pieces of molding sand will be repeatedly rubbed on the high-density screen and eventually become the original particles, and then fall from the high-density screen to the recovery bin at the bottom, so that the sand can be recycled. The waste sand or waste particles that cannot be separated in the molding sand will roll from the waste sand partition to other places after repeated friction, so that it is convenient to discard;
[0011] (3) By providing a second motor, when a high-density screen is required to perform a back-and-forth reciprocating motion to screen sand, the second motor is started, and the second pulley is driven to rotate through a belt. The second pulley drives the sand screening bin to perform a reciprocating motion on the slide rail through a connecting frame connected to the outer bearing of the extension rod, thereby achieving the effect of sand screening, which is practical. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic diagram of the front three-dimensional structure of the utility model as a whole;
[0013] Figure 2 It is a schematic diagram of the overall side structure of the utility model;
[0014] Figure 3 It is a schematic diagram of the rear three-dimensional structure of the utility model as a whole;
[0015] Figure 4 This is a schematic diagram of the internal three-dimensional structure of the trapezoidal bin of the utility model;
[0016] Figure 5 It is a three-dimensional structural schematic diagram of the utility model part
[0017] In the figure: 1. trapezoidal bin; 2. transmission bin; 3. first motor; 4. rolling rod; 5. partition; 6. cylinder; 7. gas rod; 8. adapter block; 9. adapter rod; 10. sand screening bucket; 11. sand outlet; 12. base; 13. support frame; 14. sand screening bin; 15. high-density screen; 16. first support block; 17. second motor; 18. belt; 19. second pulley; 20. second support block; 21. extension rod; 22. connecting frame; 23. recovery bin; 24. waste sand partition; 25. first pulley; 26. slide rail. DETAILED DESCRIPTION
[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0019] See also Figure 1-5The utility model provides a technical solution: a lost foam casting sand processing device, comprising a trapezoidal bin 1 and a base 12. A partition 5 is arranged inside the trapezoidal bin 1. A transmission bin 2 is arranged outside the trapezoidal bin 1. A first motor 3 is fixedly installed outside the transmission bin 2. A rolling rod 4 is fixedly installed on the output shaft end of the first motor 3. The other end of the rolling rod 4 is connected to the trapezoidal bin 1 bearing. A cylinder 6 is fixedly installed outside the transmission bin 2. A gas rod 7 is slidably connected inside the cylinder 6. A transfer block 8 is connected to the top bearing of the gas rod 7. A transfer rod 9 is arranged inside the transmission bin 2. The transfer rod 9 and the transfer block 8 are fixedly connected to each other. A sand screening bucket 10 is fixedly installed on the inner side of the transfer rod 9. One side of the sand screening bucket 10 is connected to the trapezoidal bin 1 bearing each other. Workers need to pour the completed casting sand from the top of the trapezoidal bin 1. The first motor 3 is started to drive the internal rolling rod 4 to rotate, so as to perform preliminary screening on the large pieces of sand. When the air rod 7 is extended outward, the adapter block 8 connected to the bearing will be driven to rotate downward, and the air rod 7 will be retracted to drive the adapter block 8 to rotate. The adapter block 8 drives the internal sand screening bucket 10 to rotate 90 degrees in a square with the adapter block 8 through the adapter rod 9 and then rotates 90 degrees in the opposite direction. When the sand hole reserved in the sand screening bucket 10 faces upward, the broken molding sand will fall into the sand screening bucket 10. When the sand screening bucket 10 rotates, the molding sand will become scattered again. When the sand hole faces downward, the molding sand falls from the sand hole, thereby achieving the crushing of large pieces of molding sand so that it can be recycled. At the same time, most of the broken pieces are turned into small pieces through crushing and rotation, and if the molding sand cannot pass through the sand hole into the sand screening bucket 10, it will be repeatedly crushed by the rolling rod 4, thereby preventing large pieces of molding sand from falling into subsequent projects, thereby affecting the sand recovery efficiency.
[0020] A sand outlet 11 is provided at the bottom of the trapezoidal bin 1, a slide rail 26 is fixedly installed above the base 12, a sand screening bin 14 is slidably connected above the slide rail 26, a high-density screen 15 is fixedly installed inside the sand screening bin 14, a waste sand partition 24 is fixedly installed on the front side of the sand screening bin 14, and a recovery bin 23 is provided above the base 12. Broken sand will fall into the sand screening bin 14 through the sand outlet 11, and the sand screening bin 14 will repeatedly shake back and forth on the slide rail 26. Small pieces of molding sand will be repeatedly rubbed on the high-density screen 15 and eventually become the original granular state, and then fall from the high-density screen 15 to the recovery bin 23 at the bottom, so that the sand can be recycled, and the waste sand or waste particles that cannot be separated in the molding sand will roll from the waste sand partition 24 to other places after repeated friction, so as to be conveniently discarded;
[0021] A second motor 17 is fixedly installed above the base 12, and a first pulley 25 is fixedly installed at the output end of the second motor 17. A belt 18 is wound around the outside of the first pulley 25. A support frame 13 is arranged on the rear side of the slide rail 26. A first support block 16 is fixedly installed above the support frame 13, and a second support block 20 is fixedly installed above the support frame 13. A second pulley 19 is connected to the intermediate bearing of the first support block 16 and the second support block 20. The belt 18 and the second pulley 19 are connected to each other. An extension rod 21 is fixedly installed on the left side of the support shaft of the second pulley 19. A connecting frame 22 is connected to a bearing at one end of the extension rod 21. The connecting frame 22 and the sand screening bin 14 are connected to each other by bearings. When the high-density screen 15 is required to reciprocate back and forth to screen sand, the second motor 17 is started, and the second pulley 19 is driven to rotate by the belt 18. The second pulley 19 drives the sand screening bin 14 to reciprocate on the slide rail 26 through the connecting frame 22 connected to the bearing on the outer side of the extension rod 21, thereby achieving the effect of sand screening, and the practicability is good.
[0022] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.
Claims
1. A lost foam casting sand processing device, comprising a trapezoidal bin (1) and a base (12), characterized in that: A partition (5) is arranged inside the trapezoidal bin (1), a transmission bin (2) is arranged outside the trapezoidal bin (1), a first motor (3) is fixedly mounted on the outside of the transmission bin (2), a rolling rod (4) is fixedly mounted on the output shaft end of the first motor (3), the other end of the rolling rod (4) is connected to the trapezoidal bin (1) bearing, a cylinder (6) is fixedly mounted on the outside of the transmission bin (2), a gas rod (7) is slidably connected inside the cylinder (6), a transfer block (8) is connected to the top bearing of the gas rod (7), a transfer rod (9) is arranged inside the transmission bin (2), the transfer rod (9) and the transfer block (8) are fixedly connected to each other, a sand screening bucket (10) is fixedly mounted on the inside of the transfer rod (9), and one side of the sand screening bucket (10) is connected to the trapezoidal bin (1) bearing.
2. The lost foam casting sand processing device according to claim 1, characterized in that: A sand outlet (11) is provided below the trapezoidal bin (1), a slide rail (26) is fixedly installed above the base (12), a sand screening bin (14) is slidably connected above the slide rail (26), a high-density screen (15) is fixedly installed inside the sand screening bin (14), a waste sand partition (24) is fixedly installed on the front side of the sand screening bin (14), and a recovery bin (23) is provided above the base (12).
3. The lost foam casting sand processing device according to claim 2, characterized in that: A second motor (17) is fixedly mounted above the base (12); a first pulley (25) is fixedly mounted at the output end of the second motor (17); a belt (18) is wound around the outer side of the first pulley (25); a support frame (13) is arranged at the rear side of the slide rail (26); a first support block (16) is fixedly mounted above the support frame (13); a second support block (20) is fixedly mounted above the support frame (13); a second pulley (19) is connected to the intermediate bearing between the first support block (16) and the second support block (20); the belt (18) and the second pulley (19) are connected to each other; an extension rod (21) is fixedly mounted on the left side of the support shaft of the second pulley (19); one end of the extension rod (21) is connected to a connecting frame (22) by a bearing; the connecting frame (22) and the sand screening bin (14) are connected to each other by bearings.