Wood mold positioning structure for sand mold casting

Abstract

The utility model discloses a wood mould positioning structure for sand casting, which relates to the technical field of sand casting and comprises a sand box mounting mechanism, the sand box mounting mechanism comprises a sand box body, a first positioning mechanism is mounted on the inner side of the sand box body, and the first positioning mechanism comprises a threaded rod. The bottom supporting force can be provided for the pattern, a positioning pin and a second positioning rod are connected in an inserted mode, movement of the pattern in the front-back direction can be limited, a positioning semi-arc plate is in lap joint with the outer portion of a first positioning rod, the first positioning rod abuts against the outer side of the pattern by rotating a threaded sleeve, and the pattern is positioned in the left-right direction; movement of the pattern in all directions is limited, it is ensured that the position of the pattern is fixed in the molding process, and the situation that the size of a sand mold cavity is inaccurate due to movement or deviation of the pattern is avoided.

Description

Technical Field

[0001] This utility model relates to the field of sand casting technology, and in particular to a wooden mold positioning structure for sand casting. Background Technology

[0002] Sand casting is a casting method that produces castings in sand molds. Steel, iron, and most non-ferrous alloy castings can be obtained using sand casting. Wooden molds are molds used in sand casting to create the cavities of sand molds. When using wooden molds, they need to be positioned.

[0003] For example, CN107774902A discloses a high-precision wooden mold positioning device for sand casting, which includes a convex side component and a concave side component. The convex side component is a steel positioning pin, and the concave side component is a steel positioning sleeve. The small cylindrical surface of the steel positioning pin matches the inner cylindrical surface of the steel positioning sleeve. The large cylindrical surface of the steel positioning pin has knurling and a chamfer at the upper end, which serves as a guide during assembly. The lower end of the small cylinder has a chamfer. The outer cylindrical surface of the steel positioning sleeve has knurling, a chamfer at the lower outer side, and a chamfer at the upper end of the inner hole.

[0004] In existing technologies, during sand casting, the wooden mold needs to be accurately placed in the sand box. However, when the upper and lower molds of the sand box are assembled, it is impossible to guarantee that the position of the wooden mold is fixed during the molding process. Inaccurate positioning of the wooden mold will lead to the upper and lower molds not being able to connect accurately. Furthermore, the movement or offset of the wooden mold will result in inaccurate dimensions of the sand mold cavity, thus ensuring that the dimensional accuracy of the final casting meets the design requirements. Utility Model Content

[0005] The purpose of this utility model is to solve the problem in the prior art that when the upper and lower molds of the sand casting box are assembled, the position of the wooden mold cannot be guaranteed to be fixed during the molding process, and the movement or displacement of the wooden mold leads to inaccurate dimensions of the sand casting cavity. Therefore, a wooden mold positioning structure for sand casting is proposed.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a wooden mold positioning structure for sand casting, comprising a sand box installation mechanism, the sand box installation mechanism comprising a sand box body, a first positioning mechanism installed on the inner side of the sand box body, the first positioning mechanism comprising a threaded rod, one end of the threaded rod being threadedly connected to a threaded sleeve, one end of the threaded sleeve being fixedly connected to a first positioning rod, a positioning semi-arc plate overlapping the outside of the first positioning rod, one end of the positioning semi-arc plate abutting against one end of the threaded sleeve, the other end of the positioning semi-arc plate being fixedly connected to a pattern, and a second positioning mechanism installed on the bottom side of the pattern.

[0007] Preferably, the other end of the threaded rod is fixedly connected to a sleeve frame, and the outer side of the sleeve frame is sleeved on one side of the sand box body.

[0008] Preferably, the top side of the socket frame is fixedly connected with a plug rod.

[0009] Preferably, the second positioning mechanism includes a second positioning rod, one end of which is inserted with a positioning pin, and the other end of the positioning pin is fixedly connected to a support guard plate.

[0010] Preferably, the inner side of the support plate abuts against the outer surface of the pattern, and a support rod is fixedly connected to the outer side of the support plate, with one end of the support rod fixedly connected to the inner side of the sand box body.

[0011] Preferably, first positioning blocks are fixedly connected to both outer sides of the sand box body, and mounting blocks are fixedly connected to both ends of the top side of the sand box body.

[0012] Preferably, an installation rod is installed between the mounting block and the first positioning block.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0014] 1. In this utility model, the outer surface of the pattern abuts against the support plate, which provides bottom support for the pattern. The insertion of the positioning pin and the second positioning rod can restrict the movement of the pattern in the front-back direction. The positioning semi-arc plate overlaps the outside of the first positioning rod. By rotating the threaded sleeve, the first positioning rod abuts against the outside of the pattern, which positions the pattern in the left-right direction, restricts the movement of the pattern in all directions, and ensures that the pattern is fixed in position during the molding process, avoiding inaccurate sand mold cavity dimensions due to pattern movement or displacement.

[0015] 2. In this utility model, after the upper mold is installed on the sand box mounting mechanism, one side of the upper mold is attached to the top side of the sand box body. An insertion groove corresponding to the position of the insertion rod is opened on the upper mold. The insertion rod is inserted into the corresponding insertion groove. The mounting rod guides the installation of the upper mold and the sand box body, ensuring that the upper mold and the sand box body are accurately aligned and improving the positioning effect of the pattern. Attached Figure Description

[0016] Figure 1 This utility model provides a first three-dimensional structural diagram of a wooden mold positioning structure for sand casting;

[0017] Figure 2 This utility model provides a second three-dimensional structural diagram of a wooden mold positioning structure for sand casting;

[0018] Figure 3 This utility model provides a disassembly diagram of a wooden mold positioning structure for sand casting;

[0019] Figure 4 This utility model proposes a schematic diagram of the inner side connection structure of the sand box body for positioning the wooden mold in sand casting.

[0020] Legend: 1. Sand box installation mechanism; 11. Sand box body; 12. First positioning block; 13. Mounting block; 14. Mounting rod; 2. First positioning mechanism; 21. Positioning semi-circular plate; 22. Socket frame; 23. Insert rod; 24. Threaded rod; 25. Threaded sleeve; 26. First positioning rod; 3. Second positioning mechanism; 31. Second positioning rod; 32. Support rod; 33. Positioning pin; 34. Support guard plate; 4. Pattern. Detailed Implementation

[0021] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0023] like Figure 1 - Figure 4 As shown, this utility model provides a wooden mold positioning structure for sand casting, including a sand box installation mechanism 1. The sand box installation mechanism 1 includes a sand box body 11. A first positioning mechanism 2 is installed on the inner side of the sand box body 11. The first positioning mechanism 2 includes a threaded rod 24. One end of the threaded rod 24 is threadedly connected to a threaded sleeve 25. One end of the threaded sleeve 25 is fixedly connected to a first positioning rod 26. A positioning semi-arc plate 21 overlaps the outside of the first positioning rod 26. One end of the positioning semi-arc plate 21 abuts against one end of the threaded sleeve 25. The other end of the positioning semi-arc plate 21 is fixedly connected to a pattern 4. A second positioning mechanism 3 is installed on the bottom side of the pattern 4. The other end of the threaded rod 24 is fixedly connected to a sleeve frame 22. The outer side of the sleeve frame 22 is sleeved on one side of the sand box body 11. Insertion rods 23 are fixedly connected to the top side of the sleeve frame 22.

[0024] After the bottom of the pattern 4 is supported and positioned, the positioning semi-arc plate 21 on the outside of the pattern 4 overlaps the outside of the first positioning rod 26. By rotating the threaded sleeve 25, the threaded sleeve 25 moves outside the threaded rod 24, so that the first positioning rod 26 abuts against the outside of the pattern 4, and one end of the positioning semi-arc plate 21 abuts against one end of the threaded sleeve 25, thereby positioning the pattern 4 in the left and right directions, restricting the movement of the pattern 4 in all directions, ensuring that the position of the pattern 4 is fixed during the molding process, and avoiding inaccurate sand mold cavity dimensions due to movement or displacement of the pattern 4.

[0025] like Figure 1 and Figure 4As shown, the second positioning mechanism 3 includes a second positioning rod 31, one end of which is inserted into a positioning pin 33, and one end of the positioning pin 33 is fixedly connected to a support plate 34; the inner side of the support plate 34 abuts against the outer surface of the pattern 4, and the outer side of the support plate 34 is fixedly connected to a support rod 32, one end of which is fixedly connected to the inner side of the sand box body 11; the outer sides of the sand box body 11 are fixedly connected to a first positioning block 12, and both ends of the top side of the sand box body 11 are fixedly connected to an mounting block 13; an mounting rod 14 is installed between the mounting block 13 and the first positioning block 12.

[0026] The overall effect of this embodiment is that when installing the pattern 4, the second positioning rod 31 on the bottom outer surface of the pattern 4 is inserted into the interior of the positioning pin 33, and the outer surface of the pattern 4 abuts against the inner ring surface of the support plate 34, which can provide bottom support for the pattern 4 and restrict the downward movement of the pattern 4. At the same time, the insertion of the positioning pin 33 and the second positioning rod 31 can restrict the movement of the pattern 4 in the front-back direction, thereby achieving positioning. After the upper mold is installed on the sand box installation mechanism 1, one side of the upper mold is attached to the top side of the sand box body 11. An insertion groove corresponding to the position of the insertion rod 23 is opened on the upper mold, and the insertion rod 23 is inserted into the corresponding insertion groove. The installation rod 14 guides the installation of the upper mold and the sand box body 11, ensuring that the upper mold and the sand box body 11 are accurately aligned and improving the positioning effect of the pattern 4.

[0027] The usage and working principle of this device are as follows: When installing the pattern 4, the second positioning rod 31 on the bottom outer surface of the pattern 4 is inserted into the positioning pin 33 to provide bottom support for the pattern 4 and restrict the downward movement of the pattern 4. At the same time, the insertion of the positioning pin 33 and the second positioning rod 31 restricts the movement of the pattern 4 in the front-back direction. The positioning semi-arc plate 21 overlaps the outside of the first positioning rod 26. By rotating the threaded sleeve 25, the first positioning rod 26 abuts against the outside of the pattern 4 to position the pattern 4 in the left-right direction and ensure that the position of the pattern 4 is fixed. After the upper mold is installed on the sand box installation mechanism 1, the insertion rod 23 is inserted into the corresponding insertion slot. The installation rod 14 guides the installation of the upper mold and the sand box body 11 to ensure that the upper mold and the sand box body 11 are accurately aligned when they are closed.

[0028] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A wooden mold positioning structure for sand casting, comprising a sand box mounting mechanism (1), characterized by: The sand box installation mechanism (1) includes a sand box body (11). A first positioning mechanism (2) is installed on the inner side of the sand box body (11). The first positioning mechanism (2) includes a threaded rod (24). One end of the threaded rod (24) is threadedly connected to a threaded sleeve (25). One end of the threaded sleeve (25) is fixedly connected to a first positioning rod (26). A positioning semi-arc plate (21) overlaps the outside of the first positioning rod (26). One end of the positioning semi-arc plate (21) abuts against one end of the threaded sleeve (25). The other end of the positioning semi-arc plate (21) is fixedly connected to a pattern (4). A second positioning mechanism (3) is installed on the bottom side of the pattern (4).

2. A wooden pattern positioning structure for sand casting according to claim 1, characterized in that: The other end of the threaded rod (24) is fixedly connected to a socket frame (22), and the outer side of the socket frame (22) is sleeved on one side of the sand box body (11).

3. A wooden pattern positioning structure for sand casting according to claim 2, characterized in that: The top side of the socket frame (22) is fixedly connected with a plug rod (23).

4. A wooden pattern positioning structure for sand casting according to claim 1, characterized in that: The second positioning mechanism (3) includes a second positioning rod (31), one end of which is inserted with a positioning pin (33), and one end of the positioning pin (33) is fixedly connected with a support guard plate (34).

5. A wooden pattern positioning structure for sand casting according to claim 4, characterized in that: The inner side of the support plate (34) abuts against the outer surface of the pattern (4), and a support rod (32) is fixedly connected to the outer side of the support plate (34). One end of the support rod (32) is fixedly connected to the inner side of the sand box body (11).

6. A wooden pattern positioning structure for sand casting according to claim 1, characterized in that: The sand box body (11) is fixedly connected to the outer two sides of the first positioning block (12), and the top two ends of the sand box body (11) are fixedly connected to the mounting block (13).

7. A wooden pattern positioning structure for sand casting according to claim 6, characterized in that: An installation rod (14) is installed between the installation block (13) and the first positioning block (12).

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