Precoated sand core shooter for continuous production of metal castings
By introducing automatic scraping and ejection components into the coated sand core shooter, the problem of residual sand at the mold injection port was solved, improving production efficiency and casting quality, and reducing the need for manual operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIZE HUIWANG FOUNDRY CO LTD
- Filing Date
- 2025-06-04
- Publication Date
- 2026-05-05
AI Technical Summary
Existing coated sand core shooting machines have difficulty automatically cleaning the coated sand residue at the mold injection port, which leads to sand shooting pressure leakage, uneven sand core density, and affects casting quality. In addition, they rely on manual operation, which increases the workload and production auxiliary time.
A coated sand core ejector machine was designed, comprising components such as a drive motor, a rotating rod, and a scraper, to automatically scrape off residual coated sand at the mold injection port, and facilitate the ejection and removal of the sand core through the drive motor, rotating rod, and ejector pin assembly.
It enables automated cleaning of residual sand at the mold injection port, improving production efficiency and casting quality while reducing manual labor intensity and equipment wear.
Smart Images
Figure CN224195871U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of coated sand core shooting machines, specifically, to a coated sand core shooting machine for continuous production of metal castings. Background Technology
[0002] A coated sand core shooter is a mechanical device used to manufacture sand cores. It uses the principle of sand shooting to inject coated sand into the core box at high speed, and then uses a solidification molding process to make sand cores of the required shape. It is mainly used for the production of sand cores for various castings in the foundry industry.
[0003] In the field of sand core production, coated sand core shooters are the core equipment for achieving large-scale and continuous sand core production. Their operating efficiency and processing accuracy play a decisive role in the quality of castings. However, while existing coated sand core shooters can meet basic production needs, they have obvious functional shortcomings. In the actual production process, after each sand shooting process, a large amount of coated sand often remains at the mold injection port. If these residual sand materials are not cleaned in time, they are very likely to form gaps in the subsequent mold closing process, leading to sand shooting pressure leakage, uneven sand core density, and ultimately affecting the sand core forming quality and casting qualification rate. However, existing core shooters generally lack automatic cleaning mechanisms and can only rely on manual hand tools for scraping. This manual operation method not only increases the workload of operators, prolongs production auxiliary time, and reduces overall production efficiency, but also, due to the subjectivity and instability of manual operation, is prone to problems such as incomplete cleaning and scratching of the mold surface, further aggravating equipment wear and product quality risks. Therefore, it is necessary to improve them. Utility Model Content
[0004] To overcome the above-mentioned defects, the embodiments of this disclosure provide a coated sand core shooter for continuous production of metal castings, which solves the technical problem of residual coated sand at the mold injection port in the prior art.
[0005] According to one aspect, at least one embodiment of this disclosure provides a coated sand core shooter for continuous production of metal castings, including a base plate, an L-shaped bracket fixedly connected to the top of the base plate, a drive motor fixedly connected to the back of the L-shaped bracket, a rotating shaft fixedly sleeved at the other end of the output shaft of the drive motor, a rotating rod fixedly sleeved on the outer surface of the rotating shaft, a round shaft fixedly connected to the inside of the other end of the rotating rod, a T-shaped rod movably connected to the outer surface of the round shaft, a scraper fixedly connected to the left side of the T-shaped rod through the L-shaped bracket and extending into the interior of the L-shaped bracket, and the outer surface of the scraper movably connected to the outer surface of the L-shaped bracket.
[0006] As a preferred embodiment of this utility model, a first mounting plate is fixedly connected to the top of the base plate, a first pneumatic cylinder is fixedly connected to the left side of the first mounting plate, the right side of the first pneumatic cylinder passes through the first mounting plate and extends to the right side of the first mounting plate and is fixedly connected to a connecting plate, a moving mold is fixedly connected to the right side of the connecting plate, a fixed mold is movably connected to the right side of the moving mold, a second mounting plate is fixedly connected to the right side of the fixed mold, and the bottom of the second mounting plate is fixedly connected to the top of the base plate.
[0007] As a preferred embodiment of this utility model, a limiting rod is fixedly connected between the first mounting plate and the second mounting plate, and the outer surface of the limiting rod is movably sleeved with the inner surface of the connecting plate.
[0008] As a preferred embodiment of this utility model, a drive motor is fixedly connected to the top of the connecting plate, a drive shaft is fixedly sleeved at the other end of the output shaft of the drive motor, and a rotating rod is fixedly sleeved on the outer surface of the drive shaft.
[0009] As a preferred embodiment of this utility model, a cylindrical block is movably connected to the inner surface of the rotating rod, a movable plate is fixedly connected to the bottom of the cylindrical block, the outer surface of the movable plate is movably connected to the inner surface of the connecting plate, and an ejector pin is fixedly connected to the right side of the movable plate. The right side of the ejector pin penetrates the moving mold and extends into the interior of the moving mold.
[0010] As a preferred embodiment of this utility model, the number of ejector pins is thirty-five, the thirty-five ejector pins are of the same size, and the thirty-five ejector pins are evenly distributed inside the moving mold.
[0011] As a preferred technical solution of this utility model, a second pneumatic cylinder is fixedly connected to the top of the L-shaped bracket, the bottom of the second pneumatic cylinder penetrates through the L-shaped bracket and extends into the interior of the L-shaped bracket and is fixedly connected to a sand-shooting cylinder, and the top of the sand-shooting cylinder is movably connected to the top of the inner cavity of the L-shaped bracket.
[0012] As a preferred technical solution of this utility model, a sand-shooting nozzle is provided at the bottom of the sand-shooting cylinder, and the sand-shooting nozzle and the mold cavity injection port are on the same central axis.
[0013] As a preferred technical solution of this utility model, a sand hopper located behind the second pneumatic cylinder is fixedly connected to the top of the L-shaped bracket. A conveying hose is fixedly sleeved inside the sand hopper. The outer surface of the conveying hose is movably connected to the inner surface of the L-shaped bracket. The other end of the conveying hose passes through the sand-shooting cylinder and extends into the interior of the sand-shooting cylinder.
[0014] As a preferred embodiment of this utility model, the outer surface of the scraper is smooth, and the scraper is rectangular in shape.
[0015] The beneficial effects of this utility model are as follows:
[0016] 1. In this disclosure, by setting up a drive motor, a rotating rod, a round shaft, a T-shaped rod, and a scraper, when the drive motor is running, the rotating shaft will drive the rotating rod to rotate, which in turn will cause the round shaft to rotate and drive the T-shaped rod to move forward, thereby causing the scraper to move forward. This achieves the purpose of automatically scraping off the residual coated sand at the mold injection port, solving the problem of relying on manual scraping of the coated sand at the mold injection port, improving the convenience of the device, and improving the production efficiency of the sand core.
[0017] 2. In this disclosure, by setting up a drive motor, a rotating rod, a cylindrical block, a movable plate, and an ejector pin, when the drive motor is running, the drive shaft will drive the rotating rod to rotate. The rotation of the rotating rod will drive the cylindrical block to move to the right, which in turn will cause the movable plate to drive the ejector pin to move to the right and push out the sand core inside the moving mold, thereby making it easier for the operator to pick up the sand core and further improving the production efficiency of the sand core. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.
[0019] Figure 1 This is a schematic diagram of the overall structure in one embodiment of the present disclosure;
[0020] Figure 2 for Figure 1 A cross-sectional view of the moving model in the embodiment;
[0021] Figure 3 for Figure 1 A cross-sectional view of the sand-shooting cylinder in the embodiment;
[0022] Figure 4 for Figure 1 A schematic diagram of the T-shaped rod in the embodiment;
[0023] Figure 5 for Figure 2 A cross-sectional view of the movable plate in the embodiment;
[0024] Figure 6 for Figure 1 A schematic diagram of the rotating rod structure in the embodiment.
[0025] In the diagram: 1. Base plate; 2. L-shaped bracket; 3. Drive motor; 4. Rotating shaft; 5. Rotating rod; 6. Round shaft; 7. T-shaped rod; 8. Scraper; 9. First mounting plate; 10. Second mounting plate; 11. First pneumatic cylinder; 12. Connecting plate; 13. Moving mold; 14. Fixed mold; 15. Limiting rod; 16. Drive motor; 17. Drive shaft; 18. Rotating rod; 19. Cylindrical block; 20. Movable plate; 21. Ejector pin; 22. Second pneumatic cylinder; 23. Sand injection cylinder; 24. Sand hopper; 25. Conveying hose; 26. Sand injection nozzle. Detailed Implementation
[0026] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.
[0027] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."
[0028] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.
[0029] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0030] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.
[0031] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0032] like Figures 1-6 As shown, it illustrates a coated sand core shooter for continuous production of metal castings according to an embodiment of the present disclosure. It includes a base plate 1, an L-shaped bracket 2 fixedly connected to the top of the base plate 1, a drive motor 3 fixedly connected to the back of the L-shaped bracket 2, a rotating shaft 4 fixedly sleeved at the other end of the output shaft of the drive motor 3, a rotating rod 5 fixedly sleeved on the outer surface of the rotating shaft 4, a round shaft 6 fixedly connected to the inside of the other end of the rotating rod 5, a T-shaped rod 7 movably connected to the outer surface of the round shaft 6, the left side of the T-shaped rod 7 passing through the L-shaped bracket 2 and extending into the interior of the L-shaped bracket 2 and fixedly connected to a scraper 8, and the outer surface of the scraper 8 movably connected to the outer surface of the L-shaped bracket 2.
[0033] When the drive motor 3 is running, the rotating shaft 4 will drive the rotating rod 5 to rotate, which in turn will cause the round shaft 6 to rotate and drive the T-shaped rod 7 to move forward, thereby causing the scraper 8 to move forward, thus achieving the purpose of automatically scraping off the residual coating sand at the mold injection port.
[0034] In some examples, a first mounting plate 9 is fixedly connected to the top of the base plate 1, a first pneumatic cylinder 11 is fixedly connected to the left side of the first mounting plate 9, the right side of the first pneumatic cylinder 11 passes through the first mounting plate 9 and extends to the right side of the first mounting plate 9 and is fixedly connected to a connecting plate 12, a moving mold 13 is fixedly connected to the right side of the connecting plate 12, a fixed mold 14 is movably connected to the right side of the moving mold 13, a second mounting plate 10 is fixedly connected to the right side of the fixed mold 14, and the bottom of the second mounting plate 10 is fixedly connected to the top of the base plate 1.
[0035] When the first pneumatic cylinder 11 is running, it will drive the connecting plate 12 and the moving mold 13 to move to the left and separate from the fixed mold 14.
[0036] In some examples, a limiting rod 15 is fixedly connected between the first mounting plate 9 and the second mounting plate 10, and the outer surface of the limiting rod 15 is movably sleeved with the inner surface of the connecting plate 12.
[0037] The design of the limiting rod 15 serves to limit the connection plate 12 and the moving mold 13, and at the same time, it provides stable support for the connection plate 12 and the moving mold 13.
[0038] In some examples, a drive motor 16 is fixedly connected to the top of the connecting plate 12, and a drive shaft 17 is fixedly sleeved at the other end of the output shaft of the drive motor 16. A rotating rod 18 is fixedly sleeved on the outer surface of the drive shaft 17.
[0039] When the drive motor 16 is running, it will cause the drive shaft 17 to drive the rotating rod 18 to rotate.
[0040] In some examples, a cylindrical block 19 is movably connected to the inner surface of the rotating rod 18, a movable plate 20 is fixedly connected to the bottom of the cylindrical block 19, the outer surface of the movable plate 20 is movably connected to the inner surface of the connecting plate 12, and an ejector pin 21 is fixedly connected to the right side of the movable plate 20. The right side of the ejector pin 21 passes through the moving mold 13 and extends into the interior of the moving mold 13.
[0041] The rotating rod 18 rotates, causing the cylindrical block 19 to move to the right, which in turn causes the movable plate 20 to drive the ejector pin 21 to move to the right, pushing out the sand core inside the moving mold 13, making it easier for the operator to take out the sand core.
[0042] In some examples, there are thirty-five ejector pins 21, all of the same size, and the thirty-five ejector pins 21 are evenly distributed inside the moving mold 13.
[0043] The design of the ejector pins 21 being evenly distributed inside the moving mold 13 makes the sand core inside the moving mold 13 experience more uniform force when ejected, thus ensuring the quality of the sand core.
[0044] In some examples, a second pneumatic cylinder 22 is fixedly connected to the top of the L-shaped bracket 2. The bottom of the second pneumatic cylinder 22 passes through the L-shaped bracket 2 and extends into the interior of the L-shaped bracket 2, and a sand-shooting cylinder 23 is fixedly connected thereto. The top of the sand-shooting cylinder 23 is movably connected to the top of the inner cavity of the L-shaped bracket 2.
[0045] When the second pneumatic cylinder 22 is running, it will drive the sand-shooting cylinder 23 to move downwards until it is in contact with the top of the moving mold 13 and the fixed mold 14.
[0046] In some examples, the bottom of the sand-shooting cylinder 23 is provided with a sand-shooting nozzle 26, and the sand-shooting nozzle 26 is on the same central axis as the mold cavity injection port.
[0047] This design allows the coated sand inside the sand-shooting cylinder 23 to be injected into the mold cavity through the sand-shooting nozzle 26.
[0048] In some examples, the top of the L-shaped bracket 2 is fixedly connected to a sand hopper 24 located behind the second pneumatic cylinder 22. A delivery hose 25 is fixedly sleeved inside the sand hopper 24. The outer surface of the delivery hose 25 is movably connected to the inner surface of the L-shaped bracket 2. The other end of the delivery hose 25 passes through the sand-shooting cylinder 23 and extends into the interior of the sand-shooting cylinder 23.
[0049] The coated sand inside the sand hopper 24 flows through the conveying hose 25 to the inside of the sand injection cylinder 23, and then is injected into the mold cavity through the sand injection nozzle 26.
[0050] In some examples, the outer surface of the scraper 8 is smooth, and the scraper 8 has a rectangular shape.
[0051] This design makes the scraper 8 more fluid when scraping the coated sand above the moving mold 13 and the fixed mold 14.
[0052] Working principle and usage process of this utility model:
[0053] When processing sand cores, the first pneumatic cylinder 11 is activated, which drives the moving mold 13 and the fixed mold 14 to close. Then, the second pneumatic cylinder 22 is activated, which drives the sand-shooting cylinder 23 to move downward until it is in contact with the top of the moving mold 13 and the fixed mold 14. Then, the coated sand inside the sand hopper 24 flows into the sand-shooting cylinder 23 through the conveying hose 25, and then injects the coated sand into the mold cavity through the sand-shooting nozzle 26. Afterward, the second pneumatic cylinder 22 is activated again to drive the sand-shooting cylinder 23 to reset. At this time, there is coated sand remaining at the mold injection port. Then, the drive motor 3 is activated, which causes the rotating shaft 4 to drive the rotating rod 5 to rotate, which in turn causes the round shaft 6 to rotate and drive the T-shaped rod 7 to move forward, thereby causing the scraper 8 to move forward. This achieves the purpose of automatically scraping off the coated sand remaining at the mold injection port and improves the production efficiency of sand cores.
[0054] After the sand core inside the mold cavity is processed, the first pneumatic cylinder 11 is restarted, which will drive the connecting plate 12 and the moving mold 13 to move to the left and separate from the fixed mold 14. Then, the drive motor 16 is started, which will cause the drive shaft 17 to drive the rotating rod 18 to rotate. The rotation of the rotating rod 18 will drive the cylindrical block 19 to move to the right, which will cause the movable plate 20 to drive the ejector pin 21 to move to the right and eject the sand core inside the moving mold 13, making it easier for the operator to pick up the sand core and further improving the production efficiency of the sand core.
[0055] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.
Claims
1. A coated sand core shooter for continuous production of metal castings, comprising a base plate (1), characterized in that: An L-shaped bracket (2) is fixedly connected to the top of the base plate (1). A drive motor (3) is fixedly connected to the back of the L-shaped bracket (2). A rotating shaft (4) is fixedly sleeved at the other end of the output shaft of the drive motor (3). A rotating rod (5) is fixedly sleeved on the outer surface of the rotating shaft (4). A round shaft (6) is fixedly connected inside the other end of the rotating rod (5). A T-shaped rod (7) is movably connected to the outer surface of the round shaft (6). The left side of the T-shaped rod (7) passes through the L-shaped bracket (2) and extends into the interior of the L-shaped bracket (2) and is fixedly connected to a scraper (8). The outer surface of the scraper (8) is movably connected to the outer surface of the L-shaped bracket (2).
2. The coated sand core shooter for continuous production of metal castings according to claim 1, characterized in that: The top of the base plate (1) is fixedly connected to a first mounting plate (9), the left side of the first mounting plate (9) is fixedly connected to a first pneumatic cylinder (11), the right side of the first pneumatic cylinder (11) passes through the first mounting plate (9) and extends to the right side of the first mounting plate (9) and is fixedly connected to a connecting plate (12), the right side of the connecting plate (12) is fixedly connected to a moving mold (13), the right side of the moving mold (13) is movably connected to a fixed mold (14), the right side of the fixed mold (14) is fixedly connected to a second mounting plate (10), and the bottom of the second mounting plate (10) is fixedly connected to the top of the base plate (1).
3. A coated sand core shooter for continuous production of metal castings according to claim 2, characterized in that: A limiting rod (15) is fixedly connected between the first mounting plate (9) and the second mounting plate (10), and the outer surface of the limiting rod (15) is movably sleeved with the inner surface of the connecting plate (12).
4. A coated sand core shooter for continuous production of metal castings according to claim 2, characterized in that: A drive motor (16) is fixedly connected to the top of the connecting plate (12), and a drive shaft (17) is fixedly sleeved at the other end of the output shaft of the drive motor (16). A rotating rod (18) is fixedly sleeved on the outer surface of the drive shaft (17).
5. A coated sand core shooter for continuous production of metal castings according to claim 4, characterized in that: A cylindrical block (19) is movably connected to the inner surface of the rotating rod (18). A movable plate (20) is fixedly connected to the bottom of the cylindrical block (19). The outer surface of the movable plate (20) is movably connected to the inner surface of the connecting plate (12). An ejector pin (21) is fixedly connected to the right side of the movable plate (20). The right side of the ejector pin (21) penetrates the moving mold (13) and extends into the interior of the moving mold (13).
6. A coated sand core shooter for continuous production of metal castings according to claim 5, characterized in that: The number of ejector pins (21) is thirty-five, the thirty-five ejector pins (21) are the same size, and the thirty-five ejector pins (21) are evenly distributed inside the moving mold (13).
7. A coated sand core shooter for continuous production of metal castings according to claim 1, characterized in that: The top of the L-shaped bracket (2) is fixedly connected to a second pneumatic cylinder (22). The bottom of the second pneumatic cylinder (22) penetrates through the L-shaped bracket (2) and extends into the interior of the L-shaped bracket (2), and is fixedly connected to a sand-shooting cylinder (23). The top of the sand-shooting cylinder (23) is movably connected to the top of the inner cavity of the L-shaped bracket (2).
8. A coated sand core shooter for continuous production of metal castings according to claim 7, characterized in that: The bottom of the sand-shooting cylinder (23) is provided with a sand-shooting nozzle (26), and the sand-shooting nozzle (26) and the mold cavity injection port are on the same central axis.
9. A coated sand core shooter for continuous production of metal castings according to claim 1, characterized in that: The top of the L-shaped bracket (2) is fixedly connected to a sand hopper (24) located behind the second pneumatic cylinder (22). A conveying hose (25) is fixedly sleeved inside the sand hopper (24). The outer surface of the conveying hose (25) is movably connected to the inner surface of the L-shaped bracket (2). The other end of the conveying hose (25) passes through the sand-shooting cylinder (23) and extends into the interior of the sand-shooting cylinder (23).
10. A coated sand core shooter for continuous production of metal castings according to claim 1, characterized in that: The outer surface of the scraper (8) is smooth, and the scraper (8) is rectangular in shape.