Ceramic core mold positioning structure

Abstract

The utility model discloses a ceramic core mold positioning structure, which belongs to the technical field of casting molds and comprises a mold body and a ceramic core. The ceramic core is provided with a first shaft part, a second shaft part, a third shaft part and a connecting body; a first ceramic core positioning surface is arranged at the end part of the third shaft part, and a clamping hole is formed in the first ceramic core positioning surface; the mold body is provided with a positioning column, and the positioning column comprises a column body, an elastic piece and a clamping piece; the column body comprises a first shaft body and a second shaft body, one end of the first shaft body is fixed in a mounting hole of the mold body, and the other end is provided with a shaft body positioning surface; the second shaft body is fixed on the shaft body positioning surface; an adjusting hole is formed in the end face, located in the mounting hole, of the first shaft body and extends into the second shaft body. A communicating hole is formed in the second shaft body and communicates with the adjusting hole. The elastic piece and the clamping piece are both located in the adjusting hole. The shaft body positioning surface is matched with the first ceramic core positioning surface for positioning; and the second shaft body extends into the clamping hole, so that the positioning of the ceramic core is more stable.

Description

Technical Field

[0001] The utility model relates to the technical field of casting molds, in particular to a ceramic core mold positioning structure. Background Art

[0002] In existing casting mold technology, ceramic cores are typically positioned simply by using cylindrical positioning. This irrational positioning structure leads to ceramic core instability. If the ceramic core mold is not properly positioned, wax wings are easily formed on the finished wax parts after waxing. Furthermore, the existing irrational positioning method for ceramic cores can easily break during operation, resulting in low production efficiency and the formation of wax wings on the wax parts. Utility Model Content

[0003] In order to solve the problems existing in the prior art, the utility model provides a ceramic core mold positioning structure, optimizes the positioning method of the ceramic core, and improves the positioning stability.

[0004] In order to achieve the above purpose, the technical solution adopted by the present utility model is as follows:

[0005] The utility model provides a ceramic core mold positioning structure, comprising a mold body and a ceramic core; the ceramic core has a first shaft portion, a second shaft portion, a third shaft portion and a connector, the first shaft portion and the second shaft portion are coaxial and connected, and the two ends of the connector are respectively connected to the second shaft portion and the third shaft portion;

[0006] The end of the third shaft portion is provided with a first ceramic core positioning surface, and the first ceramic core positioning surface is provided with a clamping hole;

[0007] The mold body is provided with a positioning column, and the positioning column includes a column body, an elastic member and a clamping member; the column body includes a first shaft body and a second shaft body, one end of the first shaft body is fixed in the mounting hole of the mold body, and the other end is provided with a shaft body positioning surface; the second shaft body is fixed on the shaft body positioning surface; the end surface of the first shaft body located in the mounting hole is provided with an adjustment hole, and the adjustment hole extends into the second shaft body; the second shaft body is provided with a connecting hole, and the connecting hole is connected to the adjusting hole; the elastic member and the clamping member are both located in the adjusting hole, and the clamping member is between the elastic member and the bottom wall of the adjusting hole, and its position corresponds to the connecting hole;

[0008] The shaft body positioning surface cooperates with the first ceramic core positioning surface to achieve the positioning of the end of the third shaft portion; the second shaft body extends into the clamping hole, and the clamping piece partially passes through the connecting hole and rests on the inner wall of the clamping hole.

[0009] In the above-mentioned ceramic core mold positioning structure, a second ceramic core positioning surface is provided at one end of the first shaft portion away from the second shaft portion, and a first ceramic core positioning hole is provided inside one end of the second shaft portion away from the first shaft portion;

[0010] The mold body is provided with a supporting surface, a mold positioning end surface and a positioning shaft;

[0011] The support surface cooperates with the first shaft portion for positioning;

[0012] The positioning shaft cooperates with the positioning hole of the first ceramic core for positioning;

[0013] The mold positioning end surface cooperates with the second ceramic core positioning surface for positioning.

[0014] In the above-mentioned ceramic core mold positioning structure, the mold body is provided with a plurality of auxiliary positioning surfaces, and the auxiliary positioning surfaces are located outside the positioning column; the auxiliary positioning surfaces cooperate with the outer side surface of the third shaft portion to assist in supporting positioning.

[0015] In the above-mentioned ceramic core mold positioning structure, the number of the auxiliary positioning surfaces is two, and they are symmetrically arranged with the positioning column as the center.

[0016] In the above-mentioned ceramic core mold positioning structure, the first shaft body and the second shaft body are coaxial and form an integrated structure.

[0017] In the above-mentioned ceramic core mold positioning structure, the end surface of the second shaft body away from the first shaft body is a spherical surface.

[0018] In the above-mentioned ceramic core mold positioning structure, the elastic member is a spring.

[0019] In the above-mentioned ceramic core mold positioning structure, the bottom wall of the adjustment hole is an inclined guide surface.

[0020] In the above-mentioned ceramic core mold positioning structure, the adjustment hole is coaxial with the first shaft.

[0021] In the above-mentioned ceramic core mold positioning structure, the clamping member is a steel ball.

[0022] The beneficial effects of the present invention are as follows:

[0023] The positioning design of the ceramic core mold positioning structure is more reasonable. The positioning column not only realizes the positioning of the third axis of the ceramic core, but also can exert a clamping force on the third axis, making the positioning of the ceramic core more stable, thereby reducing the occurrence of wax wings on wax parts.

[0024] Compared with existing technologies, the ceramic core mold positioning structure is easy to use, can speed up production efficiency, and conforms to the requirements of batch production.

[0025] The ceramic core cannot be moved after being positioned and clamped, which increases the safety factor during operation and reduces the risk of damage to the ceramic core. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of the overall structure of an embodiment of a ceramic core mold positioning structure;

[0027] Figure 2 This is a schematic diagram of the three-dimensional structure of the ceramic core from the first perspective in the ceramic core mold positioning structure;

[0028] Figure 3 This is a schematic diagram of the three-dimensional structure of the ceramic core from a second perspective in the ceramic core mold positioning structure;

[0029] Figure 4 This is a schematic diagram of the three-dimensional structure of the mold body in the ceramic core mold positioning structure;

[0030] Figure 5 for Figure 4 Enlarged view of area A in the middle;

[0031] Figure 6 A top view of an embodiment of a ceramic core mold positioning structure;

[0032] Figure 7 for Figure 6 Middle AA section view;

[0033] Figure 8 for Figure 6 Middle BB section view;

[0034] Figure 9 for Figure 8 Enlarged view of area D in the middle;

[0035] Figure 10 This is a schematic diagram of the three-dimensional structure of the positioning column in the ceramic core mold positioning structure.

[0036] In the picture:

[0037] 1 - mold body; 11 - support surface; 12 - positioning shaft; 13 - positioning column; 131 - first shaft; 132 - adjustment hole; 133 - elastic member; 134 - clamping member; 135 - communicating hole; 136 - guide surface; 137 - shaft positioning surface; 138 - second shaft; 14 - auxiliary positioning surface; 15 - slider; 16 - mold positioning end surface; 17 - mounting hole;

[0038] 2-ceramic core; 21-first ceramic core positioning surface; 22-third shaft portion; 23-first ceramic core positioning hole; 24-clamping hole; 25-first shaft portion; 26-second shaft portion; 27-connector; 28-second ceramic core positioning surface. DETAILED DESCRIPTION

[0039] In order to facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0040] Please refer to Figure 1 , is an embodiment of the ceramic core mold positioning structure provided by the utility model, comprising a mold body 1 and a ceramic core 2. Figure 2 and Figure 3 The ceramic core 2 has a first shaft portion 25, a second shaft portion 26, a third shaft portion 22 and a connector 27. The first shaft portion 25, the second shaft portion 26, the third shaft portion 22 and the connector 27 are an integrated structure. The first shaft portion 25 and the second shaft portion 26 are coaxial and fixedly connected. A first ceramic core positioning hole 23 is provided inside the end of the second shaft portion 26 away from the first shaft portion 25. The first ceramic core positioning hole 23 is coaxial with the second shaft portion 26; a second ceramic core positioning surface 28 is provided at the end of the first shaft portion 25 away from the second shaft portion 26. One end of the connector 27 is connected to the second shaft portion 26, and the other end is connected to the third shaft portion 22. A first ceramic core positioning surface 21 is provided at the end of the third shaft portion 22. A clamping hole 24 is machined on the first ceramic core positioning surface 21. The clamping hole 24 is coaxial with the third shaft portion 22 and extends into the third shaft portion 22.

[0041] Please refer to Figure 4 and Figure 5 The mold body 1 has a supporting surface 11, a mold positioning end surface 16, a positioning shaft 12 and a positioning column 13, which are respectively used to support and position the first shaft portion 25, the second shaft portion 26 and the third shaft portion 22.

[0042] Please refer to Figures 6-10 The support surface 11 is an arc surface, which matches the outer side surface of the first shaft portion 25 and supports the lower side of the first shaft portion 25; the second ceramic core positioning surface 28 cooperates with the mold positioning end surface 16 to limit the axial position of the first shaft portion 25.

[0043] The positioning shaft 12 is disposed on the slider 15 and is coaxial with the support surface 11. The positioning shaft 12 can extend into the first ceramic core positioning hole 23 to position and support the second shaft portion 26.

[0044] The positioning column 13 includes a column body, an elastic member 133 and a clamping member 134. The column body includes a first shaft body 131 and a second shaft body 138. The outer diameter of the second shaft body 138 is smaller than the outer diameter of the first shaft body 131, and the two are coaxial. The first shaft body 131 and the second shaft body 138 are fixed to each other at their end faces. The two can be an integral structure, such as a stepped shaft, or they can be processed separately and then assembled into one. The first shaft body 131 is fixedly installed in the mounting hole 17 of the mold body 1. The end face of the second shaft body 138 away from the first shaft body 131 is a spherical surface, which is conducive to guiding the second shaft body 138 into the clamping hole 24 of the third shaft portion 22. The end face of the first shaft body 131 and the second shaft body 138 at one end is the shaft body positioning surface 137. Since the second shaft body 138 is fixed in the middle of the shaft body positioning surface 137, the shaft body positioning surface 137 is actually annular. An adjustment hole 132 is machined on the end surface of the first shaft body 131 located at one end within the mounting hole 17. The adjustment hole 132 extends into the interior of the first shaft body 131 and into the second shaft body 138. A connecting hole 135 is formed on the second shaft body 138, which is connected to the adjustment hole 132. The elastic member 133 and the clamping member 134 are both located within the adjustment hole 132, with the clamping member 134 located between the elastic member 133 and the bottom wall of the adjustment hole 132. The position of the clamping member 134 corresponds to the position of the connecting hole 135. Under the action of the elastic member 133, a portion of the clamping member 134 passes through the connecting hole 135 and extends out of the second shaft body 138.

[0045] Furthermore, the elastic member 133 is preferably a spring. The clamping member 134 can be a steel ball.

[0046] In order to guide the clamping member 134 into the communicating hole 135 , the bottom wall of the adjusting hole 132 is inclined to form a guiding surface 136 .

[0047] When the third shaft portion 22 and the positioning column 13 are positioned, the second shaft body 138 extends into the clamping hole 24, and the shaft body positioning surface 137 is in contact with the first ceramic core positioning surface 21; one end of the elastic member 133 rests on the inner wall of the mounting hole 17, and the other end applies a thrust on the elastic member 133. Under the guidance of the adjustment hole 132, the clamping member 134 rests on the inner wall of the clamping hole 24, thereby being able to apply a certain clamping force to the third shaft portion 22, making the positioning of the ceramic core 2 more stable. After waxing, the ceramic core 2 will not be flushed up by the wax flow, so that the wax product will not form wax wings.

[0048] Furthermore, the adjustment hole 132 is coaxial with the first shaft body 131 , that is, the adjustment hole 132 is located in the middle of the first shaft body 131 and the second shaft body 138 , which is convenient for processing and positioning.

[0049] The outer side of the positioning post 13 is provided with a plurality of auxiliary positioning surfaces 14, which are arc surfaces. Preferably, there are two auxiliary positioning surfaces 14, which are symmetrically arranged with the positioning post 13 as the center.

[0050] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A ceramic core mold positioning structure, comprising a mold body (1) and a ceramic core (2); the ceramic core (2) having a first shaft portion (25), a second shaft portion (26), a third shaft portion (22) and a connector (27); the first shaft portion (25) and the second shaft portion (26) are coaxial and connected, and the two ends of the connector (27) are respectively connected to the second shaft portion (26) and the third shaft portion (22); characterized in that: A first ceramic core positioning surface (21) is provided at the end of the third shaft portion (22), and a clamping hole (24) is provided on the first ceramic core positioning surface (21); The mold body (1) is provided with a positioning column (13), and the positioning column (13) includes a column body, an elastic member (133) and a clamping member (134); the column body includes a first shaft body (131) and a second shaft body (138), one end of the first shaft body (131) is fixed in the mounting hole (17) of the mold body (1), and the other end is provided with a shaft body positioning surface (137); the second shaft body (138) is fixed on the shaft body positioning surface (137); the first shaft body (131) is located in the mounting hole (17) 7) is provided with an adjustment hole (132), and the adjustment hole (132) extends into the second shaft body (138); the second shaft body (138) is provided with a connecting hole (135), and the connecting hole (135) is connected with the adjustment hole (132); the elastic member (133) and the clamping member (134) are both located in the adjustment hole (132), and the clamping member (134) is located between the elastic member (133) and the bottom wall of the adjustment hole (132), and its position corresponds to the connecting hole (135); The shaft body positioning surface (137) cooperates with the first ceramic core positioning surface (21) to achieve positioning of the end of the third shaft portion (22); the second shaft body (138) extends into the clamping hole (24), and the clamping member (134) partially passes through the connecting hole (135) and abuts against the inner wall of the clamping hole (24).

2. The ceramic core mold positioning structure according to claim 1, characterized in that: A second ceramic core positioning surface (28) is provided at one end of the first shaft portion (25) away from the second shaft portion (26), and a first ceramic core positioning hole (23) is provided inside one end of the second shaft portion (26) away from the first shaft portion (25); The mold body (1) is provided with a supporting surface (11), a mold positioning end surface (16) and a positioning shaft (12); The supporting surface (11) and the first shaft portion (25) are matched and positioned; The positioning shaft (12) cooperates with the first ceramic core positioning hole (23) for positioning; The mold positioning end surface (16) and the second ceramic core positioning surface (28) are matched for positioning.

3. The ceramic core mold positioning structure according to claim 1, characterized in that: The mold body (1) is provided with a plurality of auxiliary positioning surfaces (14), and the auxiliary positioning surfaces (14) are located outside the positioning column (13); the auxiliary positioning surfaces (14) cooperate with the outer side surface of the third shaft portion (22) to assist in supporting positioning.

4. The ceramic core mold positioning structure according to claim 3, characterized in that: The number of the auxiliary positioning surfaces (14) is two, and they are symmetrically arranged with the positioning column (13) as the center.

5. The ceramic core mold positioning structure according to claim 1, characterized in that: The first shaft (131) and the second shaft (138) are coaxial and form an integrated structure.

6. The ceramic core mold positioning structure according to claim 1, characterized in that: An end surface of the second shaft (138) away from the first shaft (131) is a spherical surface.

7. The ceramic core mold positioning structure according to claim 1, characterized in that: The elastic member (133) is a spring.

8. The ceramic core mold positioning structure according to claim 1, characterized in that: The bottom wall of the adjustment hole (132) is an inclined guide surface (136).

9. The ceramic core mold positioning structure according to claim 1, characterized in that: The adjustment hole (132) is coaxial with the first shaft (131).

10. The ceramic core mold positioning structure according to claim 1, characterized in that: The clamping member (134) is a steel ball.

Images