Three-dimensional printing shell pressing sand mold

Abstract

The utility model discloses a three -dimensional printing shell sand mould mould, concretely relates to three -dimensional printing technical field, including sand mould, the upper surface of sand mould is set up with a plurality of groove bodies, one side of groove body is equipped with distribution positioning assembly, and distribution positioning assembly includes: positioning cone, is located one side of groove body, and positioning cone is fixedly connected with sand mould, and the outer wall fixed connection of positioning cone has arc strip, cone, fixedly located in the clearance surrounded by a plurality of arc strips, and the top end of positioning cone is embedded and is set up with side hole. The utility model discloses distribution positioning assembly, and the middle column is inserted to the inside of side hole, and three -dimensional printing material is injected to the inside of cover, can realize the multi -point position positioning fixed of edge and middle part, and the injection printing forming operation of edge and multi -point, realize distribution filling at the position of a plurality of groove bodies and a plurality of arc strips top, and the stability of distribution positioning is improved greatly.

Description

Technical Field

[0001] This utility model relates to the field of 3D printing technology, and more specifically, to a 3D printing press shell sand mold. Background Technology

[0002] 3D printed sand molds can achieve more complex geometries, especially for internal channels and details that are difficult to manufacture using traditional methods, showing great advantages and significantly shortening the entire production cycle.

[0003] Among existing publicly available documents, patent publication number CN222519947U discloses a low-pressure sand casting mold for a slanted-out housing. This technology utilizes a chill on one side of the flange movable block. By pre-embedding the chill, it effectively prevents defects such as shrinkage cavities and porosity in critical areas of the casting flange sealing groove, ensuring that the defect level in critical areas meets the standards. The external sand core effectively solves the problem of difficult parting. The flange movable block method for segmenting the flange ensures smooth parting of the casting. By adding a sand collection groove, it reduces internal sand falling into the casting, improving the casting quality. However, this technology has the following drawbacks.

[0004] Although the printing material can be injected into the 3D printing press sand mold for molding during the printing process, the press sand mold uses multiple molding points, making it difficult to achieve positioning and extrusion of multiple molding points, resulting in poor stability of the distribution and positioning. Utility Model Content

[0005] To overcome the aforementioned deficiencies of the prior art, this utility model provides the following technical solution: a three-dimensional printed pressure shell sand mold, comprising a sand mold, wherein a plurality of grooves are formed on the upper surface of the sand mold, and a distribution positioning component is provided on one side of each groove, the distribution positioning component comprising: A positioning cone is located on one side of the groove. The positioning cone is fixedly connected to the sand mold, and an arc-shaped strip is fixedly connected to the outer wall of the positioning cone. A cone is fixedly positioned in the gap formed by multiple arc-shaped strips, and the top of the positioning cone is embedded with a side hole. A central hole is formed at the center point of the top of the cone. Multiple central posts are provided above the positioning cone, and the central posts are used to be inserted into the side holes. A side post is located in the gap formed by multiple middle posts. A cover is fixedly connected to the top of the side post, and the multiple middle posts are fixedly connected to the cover. The side post is used to be inserted into the middle hole.

[0006] In a preferred embodiment, the plurality of positioning cones are arranged in a circular, equidistant distribution, and the plurality of arc-shaped strips are arranged in a circular, equidistant distribution.

[0007] In a preferred embodiment, a plurality of the central pillars are arranged in a circular, equidistant distribution, and the lower surface of the central pillars is rounded.

[0008] In a preferred embodiment, the side post has a circular cross-sectional shape, and the bottom end face of the side post is rounded.

[0009] In a preferred embodiment, a base is fixedly connected to the bottom end of the sand mold, and the base is used to support the sand mold.

[0010] In a preferred embodiment, an injection hole is provided at the edge of the upper surface of the cover; A support column is fixedly connected to the upper surface of the cover near its center point. A counterweight sleeve is fixedly installed on the outer wall of the support column. A limit ring is fixedly connected to the outer wall of the support column near its top.

[0011] In a preferred embodiment, the counterweight sleeve is made of lead, and both the outer wall of the support column and the inner wall of the counterweight sleeve are smooth surfaces.

[0012] The technical effects and advantages of this utility model are as follows: 1. This utility model adopts a distributed positioning component. The cover moves the side post downward and inserts it into the inner wall of the central hole. The central post is inserted into the side hole. The 3D printing material is injected into the inside of the cover. After the 3D printing material fills the groove, it can achieve multi-point positioning and fixation at the edge and center along the upper gap of the arc strip. It can achieve distributed filling at the upper positions of multiple grooves and multiple arc strips, which greatly improves the stability of the distributed positioning. 2. In this utility model, the cover is moved down by the support column and covers the upper surface of the base. The counterweight sleeve stabilizes the cover and ensures that the lower surface of the cover and the upper surface of the base are stably assembled and contacted. The counterweight makes the cover and the upper surface of the base fit stably. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the three-dimensional printed pressure shell sand mold of this utility model.

[0014] Figure 2 This is a partial structural diagram of the connection between the base and the sand mold of this utility model.

[0015] Figure 3 This is a bottom view of the three-dimensional printed pressure shell sand mold structure of this utility model.

[0016] Figure 4 This is a partial structural diagram of the connection between the cover and the support of this utility model.

[0017] The attached diagram is labeled as follows: 1. Sand mold; 2. Groove; 3. Positioning cone; 4. Arc strip; 5. Cone; 6. Side hole; 7. Central column; 8. Side column; 9. Cover; 10. Base; 11. Central hole; 12. Injection hole; 13. Support column; 14. Counterweight sleeve; 15. Limiting ring. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] like Figure 1 - Figure 4 The diagram shows a three-dimensional printed sand mold for pressing shells. The three-dimensional printed sand mold for pressing shells is equipped with a distribution positioning component. The distribution positioning component can achieve multi-point positioning and fixation at the edges and center, and achieve distributed filling at the upper positions of multiple grooves 2 and multiple arc strips 4, which greatly improves the stability of the distribution positioning. The specific structural settings of the distribution positioning component are as follows.

[0020] In this embodiment, as Figure 1 - Figure 3 As shown, the upper surface of the sand mold 1 has multiple grooves 2. A distribution positioning assembly is provided on one side of each groove 2. The distribution positioning assembly includes: a positioning cone 3, located on one side of the groove 2, fixedly connected to the sand mold 1, with an arc-shaped strip 4 fixedly connected to its outer wall; a cone 5, fixedly located in the gap formed by the multiple arc-shaped strips 4, with a side hole 6 embedded at the top of the positioning cone 3; a central hole 11, located at the center point of the top of the cone 5, with multiple central pillars 7 above the positioning cone 3, and the central pillars 7 are used to insert into the side hole 6; and a side pillar 8, located in the gap formed by the multiple central pillars 7, with a cover 9 fixedly connected to the top of the side pillar 8, and all the central pillars 7 are fixedly connected to the cover 9. The side pillars 8 are used to insert into the central hole 11. The multiple positioning cones 3 are arranged in a circular, equidistant arrangement, as are the multiple arc-shaped strips 4. The multiple central pillars 7 are arranged in a circular, equidistant arrangement, with rounded corners on their lower surfaces. The cross-sectional shape of the side post 8 is circular, and the bottom end face of the side post 8 is rounded.

[0021] In this embodiment, as Figure 2 As shown, a base 10 is fixedly connected to the bottom of the sand mold 1. The base 10 is used to support the sand mold 1, so as to increase the stability of the sand mold 1 and prevent the sand mold 1 from shaking.

[0022] When using this 3D printed sand mold, the sand mold 1 is supported by the base 10 to increase its stability. The hand is held on the outer wall of the support column 13, which is located on the lower surface of the limiting ring 15. Then, the support column 13 is moved downward, which drives the cover 9 to move downward. The cover 9 drives the side column 8 to move downward and insert into the inner wall of the central hole 11. At the same time, the cover 9 drives multiple central columns 7 to move downward and insert into the side hole 6. Meanwhile, the lower surface of the cover 9 is attached to the upper surface of the sand mold 1 for sealing. Then, the 3D printing material is injected into the cover 9. After filling the groove 2, the 3D printing material flows into the gap above the arc strip 4. This can achieve multi-point positioning and fixation at the edges and center, thus distributing and filling the upper positions of multiple grooves 2 and multiple arc strips 4.

[0023] In this embodiment, as Figure 4 As shown, an injection hole 12 is provided at the edge of the upper surface of the cover 9; a support column 13 is fixedly connected to the upper surface of the cover 9 near its center point, and a counterweight sleeve 14 is fixedly installed on the outer wall of the support column 13. A limit ring 15 is fixedly connected to the outer wall of the support column 13 near its top. The counterweight sleeve 14 is made of lead, and both the outer wall of the support column 13 and the inner wall of the counterweight sleeve 14 are smooth surfaces.

[0024] When using this technology, the hand holds the outer wall of the support column 13 and moves downwards, so that the lower surface of the limiting ring 15 fits against the hand position, and moves the cover 9 downwards along the support column 13. The cover 9 covers the upper surface of the base 10 and the outside of the sand mold 1. At the same time, the counterweight sleeve 14 provides stable counterweight to the cover 9, ensuring that the lower surface of the cover 9 and the upper surface of the base 10 are stably assembled and in contact. The 3D printing material is injected into the interior of the cover 9 through the injection hole 12 for molding.

[0025] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A three-dimensional printed pressure shell sand mold, comprising a sand mold (1), characterized in that: The upper surface of the sand mold (1) is provided with a plurality of grooves (2), and a distribution positioning component is provided on one side of each groove (2). The distribution positioning component includes: The positioning cone (3) is located on one side of the groove (2). The positioning cone (3) is fixedly connected to the sand mold (1). An arc strip (4) is fixedly connected to the outer wall of the positioning cone (3). The cone (5) is fixed in the gap formed by multiple arc-shaped strips (4), and the top of the positioning cone (3) is embedded with a side hole (6). A central hole (11) is opened at the center point of the top of the cone (5). Multiple central posts (7) are provided above the positioning cone (3), and the central posts (7) are used to be inserted into the side holes (6). Side post (8) is located in the gap formed by multiple middle posts (7). The top of the side post (8) is fixedly connected to a cover (9). The multiple middle posts (7) are fixedly connected to the cover (9). The side post (8) is used to be inserted into the middle hole (11).

2. The three-dimensional printed pressure shell sand mold according to claim 1, characterized in that: The multiple positioning cones (3) are arranged in a circular and equidistant arrangement, and the multiple arc-shaped strips (4) are arranged in a circular and equidistant arrangement.

3. The three-dimensional printing press-shell sand mold according to claim 1, characterized in that: Multiple central pillars (7) are arranged in a circular, equidistant pattern, and the lower surface of each central pillar (7) is rounded.

4. The three-dimensional printed pressure shell sand mold according to claim 1, characterized in that: The cross-sectional shape of the side post (8) is circular, and the bottom end face of the side post (8) is rounded.

5. The three-dimensional printed pressure shell sand mold according to claim 1, characterized in that: The bottom end of the sand mold (1) is fixedly connected to a base (10), which is used to support the sand mold (1).

6. The three-dimensional printed pressure shell sand mold according to claim 1, characterized in that: An injection hole (12) is provided at the edge of the upper surface of the cover (9); A support column (13) is fixedly connected to the upper surface of the cover (9) and near its center point. A counterweight sleeve (14) is fixedly installed on the outer wall of the support column (13). A limit ring (15) is fixedly connected to the outer wall of the support column (13) and near its top.

7. The three-dimensional printed pressure shell sand mold according to claim 6, characterized in that: The counterweight sleeve (14) is made of lead, and the outer wall of the support (13) and the inner wall of the counterweight sleeve (14) are both smooth surfaces.

Images