Sand shooting structure of horizontal core shooting mold
By designing a sand injection structure in a horizontal core injection mold, including sand injection plate, sand injection tube, thermal insulation sleeve and sealing ring, the problem of residual sand falling off when the middle area of the sand core in traditional molds cannot be cured and the sealing ring rebounds, achieving the effect of columnar structure without excess sand injection and automated production.
Patent Information
- Application Number
- CN202421823089.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-30
- Publication Date
- 2025-05-23
- Estimated Expiration
- 2034-07-30
AI Technical Summary
When the sand core is large, the middle area of the sand core cannot be solidified, resulting in an excess columnar structure of sand nozzles on the top of the molded sand core. It needs to be manually sawed and repaired, which is time-consuming and labor-intensive, polluted the working environment, and the residual sand will fall when the sealing ring rebounds, and the surface of the mold needs to be cleaned.
A sand injection structure of horizontal core injection mold is designed, including upper mold, sand injection board, sand injection hole, sand injection pipe, heat insulation sleeve, sealing ring and limiting platform. The sand injection pipe is closely matched with the mating hole of the upper mold to avoid sand particles entering, and the sealing ring is fitted and sealed with the upper mold. After the sand injection is completed, the sealing ring leaves the upper mold and will no longer drop residual sand.
The columnar structure of sand core without excess sand injection on the top is realized, saving manual repair time and labor intensity, improving the working environment, avoiding residual sand on the surface of the mold, and promoting automated continuous production.
Smart Images
Figure CN222890530U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of casting molds, in particular to a sand shooting structure of a horizontal core shooting mold. Background Art
[0002] The traditional horizontal core shooting mold sets the sand shooting port on the upper mold plane. At the same time, since part of the sand core structure is set in the upper mold cavity, a heating tube is often required to ensure the smooth curing of the sand core. When the sand core is large, if there is no heating tube above the sand core, only the heating tubes are arranged around the sand core, and the middle area of the sand core cannot be cured. At this time, the sand shooting port is usually raised, and a heating tube is added above the sand core (in the gap of the sand shooting port). This will inevitably generate redundant sand shooting port columnar structures on the top of the formed sand core, such as Figure 1 Therefore, it is necessary to remove the sand core, saw off the extra columnar structure on the top, and flatten and repair the sawn part. This process is time-consuming and labor-intensive, pollutes the working environment, and is not conducive to the health of the operator.
[0003] In addition, since the traditional core shooting machine sets the sealing ring on the plane of the sand shooting port, the sealing ring is flattened during sand shooting, and some sand particles will remain in the inner cavity of the sealing ring. When the sand shooting is completed and the sealing ring leaves the mold, the sealing ring rebounds and squeezes out the sand particles in the inner cavity of the sealing ring and leaves them on the surface of the mold, which results in the need to clean the residual sand on the surface of the mold for each mold, which is not conducive to the realization of automated production of sand cores. Utility Model Content
[0004] The utility model aims to provide a sand shooting structure of a horizontal core shooting mold in view of the defects of the prior art.
[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:
[0006] A sand shooting structure of a horizontal core shooting mold comprises an upper mold and a sand shooting plate, and is characterized in that: a plurality of sand shooting holes are arranged on the sand shooting plate, a sand shooting tube is fixedly connected to the lower end surface of the sand shooting plate, a through mounting hole is arranged at the center of the sand shooting tube, the mounting hole corresponds to the position of the sand shooting holes on the sand shooting plate, an insulation sleeve is fixedly connected in the mounting hole, a through sand shooting channel is arranged at the center of the insulation sleeve, a plurality of matching holes connecting the cavity are arranged at the upper end of the upper mold, the position and size of the matching holes match the sand shooting tube, a sealing ring is arranged on the upper end sleeve of the sand shooting tube, and the upper surface of the sealing ring is fixedly connected to the lower surface of the sand shooting plate.
[0007] Furthermore, a first step and a second step are sequentially arranged on the inner side of the sand shooting hole from top to bottom, the width of the second step is greater than that of the first step, a limiting boss is arranged on the top of the thermal insulation sleeve, the diameter of the limiting boss is greater than the aperture at the second step of the sand shooting hole, and is less than or equal to the aperture at the first step of the sand shooting hole, and a limiting stud is connected to the upper end of the sand shooting hole, and the diameter of the limiting stud is greater than the aperture at the first step of the sand shooting hole.
[0008] Furthermore, the limiting stud and the sand shooting hole are connected by threads.
[0009] Furthermore, a limiting platform is fixedly connected to the lower surface of the sand shooting plate. When the sand shooting plate moves downward and the lower end of the limiting platform abuts against the upper mold, the lower surface of the sand shooting tube is flush with the upper surface of the cavity of the upper mold.
[0010] Furthermore, the lower end of the heat insulation sleeve is flush with the lower end of the sand shooting tube.
[0011] Furthermore, a plurality of heating tube installation holes are provided in the upper mold for installing the heating tubes.
[0012] Compared with the prior art, the beneficial effects of the utility model are:
[0013] 1. The sand core produced by the sand shooting structure of the horizontal core shooting mold of the utility model has no redundant sand shooting port columnar structure remaining on the top, which saves the operator from the subsequent operations of sawing, flattening and repairing the sand core, reduces manual labor time and reduces labor intensity.
[0014] 2. It avoids the problem of fine sand particles falling into the air during the traditional sand core repair process, improves the working environment, and is beneficial to the health of workers.
[0015] 3. When the sealing ring leaves the mold surface and rebounds, no residual sand will fall onto the mold surface. There is no need to clean the mold surface after each mold is completed, which is conducive to the realization of automated continuous production of horizontal core shooting. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 The sand core structure diagram produced by the existing horizontal core shooting mold;
[0017] Figure 2 This is a schematic diagram of the structure of an embodiment of the utility model;
[0018] Figure 3 It is the overall cross-sectional structure diagram of the embodiment;
[0019] Figure 4 It is a partial cross-sectional view of the sandblasting plate in the embodiment;
[0020] Figure 5It is a cross-sectional view of the heat insulation sleeve in the embodiment;
[0021] Figure 6 It is a schematic diagram of the sand shooting state of the embodiment;
[0022] Among them: 1-upper mold, 2-sand shooting plate, 3-sand shooting hole, 4-sand shooting tube, 5-insulation sleeve, 6-sealing ring, 7-limiting stud, 8-limiting platform, 11-cavity, 12-matching hole, 13-heating tube installation hole, 31-first step, 32-second step, 41-installation hole, 51-sand shooting channel, 52-limiting boss. DETAILED DESCRIPTION
[0023] In order to deepen the understanding of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings. This embodiment is only used to explain the present invention and does not constitute a limitation on the protection scope of the present invention.
[0024] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0025] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix", "set" and the like should be understood in a broad sense, 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, or it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0026] Figure 2 , 3The specific embodiment of the sand shooting structure of a horizontal core shooting mold is shown, including an upper mold 1, a sand shooting plate 2, a plurality of sand shooting holes 3 are arranged on the sand shooting plate 2, a sand shooting tube 4 is fixedly connected to the lower end surface of the sand shooting plate 2, a through mounting hole 41 is arranged at the center of the sand shooting tube 4, the mounting hole 41 corresponds to the position of the sand shooting hole 3 on the sand shooting plate 2, a heat insulation sleeve 5 is fixedly connected in the mounting hole 41, a through sand shooting channel 51 is arranged at the center of the heat insulation sleeve 5, a plurality of matching holes 12 connected to the cavity 11 are arranged at the upper end of the upper mold 1, the position and size of the matching holes 12 match the sand shooting tube 4, a sealing ring 6 is sleeved on the upper end of the sand shooting tube 4, and the upper surface of the sealing ring 6 is fixedly connected to the lower surface of the sand shooting plate 2. The lower end of the heat insulation sleeve 5 is flush with the lower end of the sand shooting tube 4. A limited position platform 8 is fixedly connected to the lower surface of the sand shooting plate 2.
[0027] like Figure 4 As shown, the inner side of the sand shooting hole 3 is provided with a first step 31 and a second step 32 from top to bottom, and the width of the second step 32 is greater than that of the first step 31. Figure 5 As shown, a limiting boss 52 is provided on the top of the heat insulating sleeve 5, and the diameter of the limiting boss 52 is larger than the aperture at the second step 32 of the sand shooting hole 3, and smaller than or equal to the aperture at the first step 31 of the sand shooting hole 3. A limiting stud 7 is connected to the upper end of the sand shooting hole 3, and the diameter of the limiting stud 7 is larger than the aperture at the first step 31 of the sand shooting hole 3. The limiting stud 7 is threadedly connected to the sand shooting hole 3. When the heat insulating sleeve 5 is inserted into the sand shooting tube 4, the lower edge of the limiting boss 52 abuts against the second step 32, and the lower edge of the limiting stud 7 abuts against the first step 31, thereby limiting the heat insulating sleeve 5 axially from the bottom and the top respectively, to prevent the heat insulating sleeve 5 from falling off from the sand shooting hole 3.
[0028] like Figure 6 As shown, when making the core, the mold is closed, and then the sand shooting plate 2 moves to the top of the upper mold 1, and the sand shooting tube 4 moves to the top of the matching hole 12, and then the sand shooting plate 2 moves downward, and the sand shooting tube 4 moves downward along the matching hole 12 until the lower end of the limiting platform 8 abuts against the upper surface of the upper mold 1. At this time, the limiting platform 8 limits the further downward movement of the sand shooting plate 2 and ensures that the lower plane of the sand shooting tube 4 and the upper plane of the inner cavity 11 of the upper mold 1 are in the same horizontal plane. At this time, the sealing ring 6 is firmly squeezed between the upper mold 1 and the sand shooting plate 2, and the sealing ring 6 is sealed with the upper mold 1 to prevent air and sand from escaping. At the same time, the sand shooting tube 4 is closely matched with the matching hole 12 of the upper mold 1 to prevent sand particles from entering the matching hole 12. After the sand shooting is completed, the sand shooting plate 2 rises, driving the sealing ring 6 to leave the upper mold, and then returns to its original position. After the sand core is solidified, the mold is opened and the sand core is ejected.
[0029] The above specific implementation methods are only for illustrating the technical concept and structural features of the utility model, and the purpose is to enable relevant persons familiar with this technology to implement them accordingly. However, the above content does not limit the protection scope of the utility model. Any equivalent changes or modifications made based on the spirit of the utility model should fall within the protection scope of the utility model.
Claims
1. A sand shooting structure of a horizontal core shooting mold, comprising an upper mold (1) and a sand shooting plate (2), characterized in that: The sand blasting plate (2) is provided with a plurality of sand blasting holes (3), a sand blasting tube (4) is fixedly connected to the lower end surface of the sand blasting plate (2), a through mounting hole (41) is provided at the center of the sand blasting tube (4), the mounting hole (41) corresponds to the position of the sand blasting hole (3) on the sand blasting plate (2), a heat insulating sleeve (5) is fixedly connected inside the mounting hole (41), a through sand blasting channel (51) is provided at the center of the heat insulating sleeve (5), a plurality of matching holes (12) connected to the cavity (11) are provided at the upper end of the upper mold (1), the position and size of the matching holes (12) match the sand blasting tube (4), a sealing ring (6) is provided at the upper end of the sand blasting tube (4), and the upper surface of the sealing ring (6) is fixedly connected to the lower surface of the sand blasting plate (2).
2. The sand shooting structure of a horizontal core shooting mold according to claim 1, characterized in that: The inner side of the sand shooting hole (3) is provided with a first step (31) and a second step (32) in sequence from top to bottom, the width of the second step (32) is greater than that of the first step (31), a limiting boss (52) is provided on the top of the heat insulation sleeve (5), the diameter of the limiting boss (52) is greater than the aperture at the second step (32) of the sand shooting hole (3), and is less than or equal to the aperture at the first step (31) of the sand shooting hole (3), and a limiting stud (7) is connected to the upper end of the sand shooting hole (3), the diameter of the limiting stud (7) is greater than the aperture at the first step (31) of the sand shooting hole (3).
3. The sand shooting structure of a horizontal core shooting mold according to claim 2, characterized in that: The limiting stud (7) and the sand shooting hole (3) are connected by threads.
4. The sand shooting structure of a horizontal core shooting mold according to claim 1, characterized in that: A limiting platform (8) is fixedly connected to the lower surface of the sand blasting plate (2); when the sand blasting plate (2) moves downward and the lower end of the limiting platform (8) abuts against the upper mold (1), the lower surface of the sand blasting tube (4) is flush with the upper surface of the cavity (11) of the upper mold (1).
5. The sand shooting structure of a horizontal core shooting mold according to claim 1, characterized in that: The lower end of the heat insulation sleeve (5) is flush with the lower end of the sand blasting tube (4).
6. The sand shooting structure of a horizontal core shooting mold according to claim 1, characterized in that: A plurality of heating tube installation holes (13) are arranged in the upper mold (1) for installing the heating tubes.