Inverted loose piece mold for precision casting

Abstract

The utility model relates to the technical field of automatic molds for precision casting, and discloses an inverted loose piece mold for precision casting, which comprises an upper mold and a lower mold, a locking bolt is arranged in the upper mold, the locking bolt is connected in the lower mold in a sliding manner, and the locking bolt is connected with the lower mold in a sliding manner. The upper die and the lower die are fixed through the locking bolt, a cavity loose piece group is arranged at the top of the upper die, loose pieces in a cavity of the cavity loose piece group are combined together through a dovetail groove and a bolt to form an integral structure, and a bent pipe loose piece group is arranged at the top of the upper die. According to the utility model, the inverted loose piece is fixed on the intra-cavity loose piece through the positioning pin and the locking mechanism, so that a mold inner core is formed, the problem that a complex semi-closed inverted structure cannot complete one-time forming is solved, the requirement of one-time forming of a complex part can be met, the casting precision of a product is improved, the working efficiency is improved, and the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of precision casting automatic molds, in particular to an inverted movable block mold for precision casting. Background Art

[0002] Precision casting is a manufacturing process that precisely pours molten metal or alloy into a pre-prepared shell and solidifies it into a part or workpiece of the desired shape. It has the following characteristics: complex product structure, high precision, good surface quality, high dimensional accuracy, good internal quality, and high production efficiency. Wax molds are required in the production process of precision casting shells, and precision casting molds with complex structures and high precision will be used in the production process of wax molds;

[0003] The process flow of precision casting technology is mainly divided into two parts: mold making and casting. The first is mold making. Mold making is the key to the entire process. Molds are generally made of materials with high temperature resistance and low thermal expansion coefficient, such as aluminum alloy, plastic mold steel, carbide mold steel, high-speed steel mold material, stainless steel mold material, etc. Casting mold refers to the mold used to form castings in the casting forming process. Casting molds are supporting casting processes, mainly gravity casting molds, high-pressure casting molds, low-pressure casting molds, extrusion casting molds, etc. Casting molds are one of the most important process equipment in casting production and have a great impact on the quality of castings. The improvement of casting mold technology will be of great significance to improving the quality of castings, developing new castings, and improving the level of near-net processing. Make the shape and size of the product in the mold, and add automatic modules and temperature control devices. The production of molds requires high precision to ensure the accuracy and surface quality of the product. Improvements in mold structure and design can ensure product diversity, improve efficiency in the production process, and reduce the use of corresponding auxiliary tools and materials. For molds with complex product structures that cannot be automatically cored, molds with live blocks are usually used;

[0004] In the traditional casting process, since the product has a complex semi-closed cavity and a bending tube mechanism, especially the semi-closed state in the cavity is an inverted structure, it is impossible to use a live block to complete the core pulling of the semi-closed and mesh tube type, or the live block has multiple ceramic cores, which cannot meet the molds of products with semi-closed and bent tube structures. At the same time, core pulling is impossible under the normal structure, and the production needs of complex products cannot be met, which reduces the complexity of the product production, while reducing work efficiency and increasing costs. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides an inverted live block mold for precision casting, aiming to improve the problem in the prior art that the semi-closed inverted structure cannot place the core and cannot meet the production needs of complex products, thereby reducing work efficiency and increasing costs.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An inverted movable block mold for precision casting, comprising an upper mold and a lower mold, wherein a locking bolt is arranged inside the upper mold, wherein the locking bolt is slidably connected inside the lower mold, wherein the upper mold and the lower mold are fixed by the locking bolt, wherein a cavity movable block group is arranged on the top of the upper mold, wherein the cavity movable block group combines the movable blocks in the cavity together to form an integral structure through a dovetail groove and bolts, wherein a bending pipe movable block group is arranged on the top of the upper mold, wherein the bending pipe movable block group combines the movable blocks in the bending pipe together to form an integral structure through a dovetail groove and bolts, and wherein an auxiliary component is arranged on the top of the upper mold;

[0008] As a further description of the above technical solution:

[0009] The auxiliary component comprises an auxiliary block, the bottom of which is fixedly connected to the top of the upper die of the mold;

[0010] As a further description of the above technical solution:

[0011] An extrusion movable block is arranged inside the lower die of the mold, and an extrusion fixed movable block is arranged inside the extrusion movable block;

[0012] As a further description of the above technical solution:

[0013] The extrusion fixed movable block and the extrusion movable block are combined together to form a movable block structure, and the extrusion fixed movable block is fixed to the upper die of the mold by bolts and moves therewith;

[0014] As a further description of the above technical solution:

[0015] A positioning pin is fixedly connected inside the lower mold of the mold, and the positioning pin makes the upper mold of the mold overlap with the lower mold of the mold along a specific route;

[0016] As a further description of the above technical solution:

[0017] An inverted movable block is arranged inside the lower mold of the mold, and the inverted movable block is fixed to the cavity movable block group through the positioning pin and the locking mechanism;

[0018] As a further description of the above technical solution:

[0019] A ceramic core is arranged inside the lower mold of the mold, and the ceramic core is fixed on the lower mold of the mold by a structure and combined with the cavity movable block group;

[0020] As a further description of the above technical solution:

[0021] A side movable block is fixedly connected inside the lower mold of the mold. The side movable block is fixed to the lower mold of the mold with bolts and is used together with the corresponding fixed movable block to achieve the function of automatic locking.

[0022] The utility model has the following beneficial effects:

[0023] 1. In the utility model, the inverted movable block is fixed on the movable block in the cavity by means of a positioning pin and a locking mechanism, thereby forming an inner core of a mold, solving the problem that a complex semi-closed inverted structure cannot be formed in one time, meeting the requirement of forming complex parts in one time, improving product casting accuracy, improving work efficiency and reducing costs.

[0024] 2. In the utility model, the bending block group is fixed to the upper mold of the mold by fixing bolts, and the auxiliary block is always fixed to the upper mold of the mold by bolts, so as to achieve the effect of ensuring balance during use, solve the problem that the molds cannot be effectively balanced and stable, and there will be tilting or instability during work, which affects the processing accuracy, thereby improving the stability of the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a top view of an inverted movable block mold for precision casting proposed by the utility model;

[0026] Figure 2 It is a three-dimensional schematic diagram of an inverted movable block mold for precision casting proposed by the utility model;

[0027] Figure 3 This is a schematic diagram of the structure of a pipe bending movable block group of an inverted movable block mold for precision casting proposed by the utility model;

[0028] Figure 4 This is a schematic diagram of the side movable block structure of an inverted movable block mold for precision casting proposed by the utility model;

[0029] Figure 5 This is a schematic diagram of an inverted movable block structure of an inverted movable block mold for precision casting proposed by the utility model;

[0030] Figure 6 The utility model is a schematic diagram of the top structure of an upper mold of an inverted movable block mold for precision casting.

[0031] Legend:

[0032] 1. Upper mold; 2. Lower mold; 3. Auxiliary block; 4. Cavity movable block group; 5. Bending pipe movable block group; 6. Extrusion fixed movable block; 7. Extrusion movable block; 8. Locking bolt; 9. Positioning pin; 10. Inverted movable block; 11. Ceramic core; 12. Side movable block. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] Reference Figure 1-Figure 3 The utility model provides an embodiment: an inverted movable block mold for precision casting, including an upper mold 1 and a lower mold 2. A locking bolt 8 is arranged inside the upper mold 1, and the locking bolt 8 is slidably connected to the inside of the lower mold 2. The upper mold 1 and the lower mold 2 are fixed by the locking bolt 8. A cavity movable block group 4 is arranged on the top of the upper mold 1. The cavity movable block group 4 combines the movable blocks in the cavity together to form an integral structure through a dovetail groove and a bolt. A bending pipe movable block group 5 is arranged on the top of the upper mold 1. The bending pipe movable block group 5 combines the movable blocks in the bending pipe together to form an integral structure through a dovetail groove and a bolt. An auxiliary component is arranged on the top of the upper mold 1. The component includes an auxiliary block 3, the bottom of which is fixedly connected to the top of the upper mold 1 of the mold, an extrusion movable block 7 is arranged inside the lower mold 2 of the mold, an extrusion fixed movable block 6 is arranged inside the extrusion movable block 7, the extrusion fixed movable block 6 and the extrusion movable block 7 are combined together to form a movable block structure, the extrusion fixed movable block 6 is fixed to the upper mold 1 of the mold by bolts and moves therewith, a positioning pin 9 is fixedly connected inside the lower mold 2 of the mold, the positioning pin 9 makes the upper mold 1 overlap with the lower mold 2 of the mold along a specific route, an inverted movable block 10 is arranged inside the lower mold 2 of the mold, the inverted movable block 10 is fixed to the cavity movable block group 4 by the positioning pin 9 and the locking mechanism, and a side movable block 12 is fixedly connected inside the lower mold 2 of the mold.

[0035] Specifically, first, the inverted movable block 10 is fixed to the cavity movable block group 4 by the positioning pin 9 and the locking mechanism, which ensures the stable connection of the inverted movable block. Then, the cavity movable block group 4 and the bending pipe movable block group 5 are firmly installed on the mold upper mold 1 by fixing bolts. The installation of the auxiliary block 3 is balanced by bolts and ensured to be in the same horizontal plane with other components. The extrusion fixed movable block 6 is also fixed to the mold upper mold 1 by bolts to ensure that its position remains unchanged. The extrusion movable block 7 is placed on the mold lower mold 2 and reciprocates through the guide groove. Finally, the side movable block 12 is also fixed to the mold upper mold 1 and the mold lower mold 2 in a similar manner to enable it to reciprocate.

[0036] Reference Figure 4 and Figure 6 A ceramic core 11 is arranged inside the lower mold 2 of the mold. The ceramic core 11 is fixed on the lower mold 2 of the mold by using a structure and combined with the cavity movable block group 4.

[0037] Specifically, after the mold is assembled, the ceramic core 11 manufactured in advance is placed on the lower mold 2 with a fixing groove, ensuring that one end of the ceramic core 11 is seamlessly fitted with the cavity block assembly 4 after mold locking.

[0038] Reference Figure 4 and Figure 5 The side movable block 12 is fixed to the lower mold 2 of the mold by bolts and is used together with the corresponding fixed movable block to achieve the function of automatic locking.

[0039] Specifically, after all assembling is completed, the upper mold 1 is placed on the lower mold 2 along the positioning pin 9, and the two molds are completely locked by the locking bolt 8. This ensures the perfect fit between the upper mold 1 and the lower mold 2, while avoiding the occurrence of misalignment and gaps. In this process, the movable block 7 and the side movable block 12 are squeezed to automatically lock under the action of the fixed movable block 6, ensuring the stability and accuracy of the assembly. The locked mold wax injection port fits the wax injection port of the wax injection machine, completing the wax injection process.

[0040] Working principle: adjust the wax injection port position with the mold in a complete state, fix the inverted movable block 10 on the cavity movable block group 4 through the positioning pin 9 and the locking mechanism, fix the cavity movable block group 4 on the mold upper mold 1 with fixing bolts, fix the bending pipe movable block group 5 on the mold upper mold 1 with fixing bolts, and the auxiliary block 3 is always fixed on the mold upper mold 1 with bolts to ensure that the mold upper mold 1 can be balanced during use. The outer parts of the auxiliary block 3, the cavity movable block group 4 and the bending pipe movable block group 5 are guaranteed to be in the same horizontal plane, the extrusion fixed movable block 6 is always fixed on the mold upper mold 1 with bolts, and the extrusion movable block 7 is placed on the mold lower mold 2 with a guide groove for reciprocating motion. The side movable block 12 adopts the same extrusion fixed movable block 6 and The extrusion movable block 7 is fixed on the upper mold 1 and the lower mold 2 in the same way to work reciprocatingly. The ceramic core 11 made in advance is placed on the lower mold 2 with a fixed groove. The other end of the ceramic core 11 needs to be seamlessly fitted with the cavity movable block group 4 after the mold is locked. The upper mold 1 of the mold with the cavity movable block group 4, the bending movable block group 5, the auxiliary block 3, the extrusion fixed movable block 6 and the side movable block 12 fixed is placed on the lower mold 2 along the positioning pin 9, and the upper mold 1 and the lower mold 2 are completely locked with the locking bolt 8 to ensure that the upper mold 1 and the lower mold 2 are perfectly matched and there is no misalignment and gap. At this time, the extrusion movable block 7 and the side movable block 12 are automatically locked under the action of the extrusion fixed movable block 6. The locked mold wax injection port is fitted with the wax injection port of the wax injection machine to complete the wax injection process, and then the wax mold is taken out to complete the wax injection operation.

[0041] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An inverted movable block mold for precision casting, comprising an upper mold (1) and a lower mold (2), characterized in that: The upper mold (1) is provided with a locking bolt (8), and the locking bolt (8) is slidably connected to the lower mold (2). The upper mold (1) and the lower mold (2) are fixed by the locking bolt (8). The top of the upper mold (1) is provided with a cavity movable block group (4), and the cavity movable block group (4) combines the various movable blocks in the cavity together through dovetail grooves and bolts to form an integral structure. The top of the upper mold (1) is provided with a bending pipe movable block group (5), and the bending pipe movable block group (5) combines the various movable blocks in the bending pipe together through dovetail grooves and bolts to form an integral structure. The top of the upper mold (1) is provided with an auxiliary component.

2. The inverted movable block mold for precision casting according to claim 1, characterized in that: The auxiliary component comprises an auxiliary block (3), the bottom of which is fixedly connected to the top of the upper die (1) of the mold.

3. The inverted movable block mold for precision casting according to claim 1, characterized in that: An extrusion movable block (7) is arranged inside the lower die (2) of the mold, and an extrusion fixed movable block (6) is arranged inside the extrusion movable block (7).

4. The inverted movable block mold for precision casting according to claim 3, characterized in that: The extrusion fixed movable block (6) and the extrusion movable block (7) are combined together to form a movable block structure. The extrusion fixed movable block (6) is fixed to the upper mold (1) of the mold by bolts and moves therewith.

5. The inverted movable block mold for precision casting according to claim 1, characterized in that: A positioning pin (9) is fixedly connected inside the mold lower mold (2), and the positioning pin (9) makes the mold upper mold (1) overlap with the mold lower mold (2) along a specific route.

6. The inverted movable block mold for precision casting according to claim 5, characterized in that: An inverted movable block (10) is arranged inside the lower mold (2) of the mold, and the inverted movable block (10) is fixed to the cavity movable block group (4) through the positioning pin (9) and the locking mechanism.

7. The inverted movable block mold for precision casting according to claim 1, characterized in that: A ceramic core (11) is arranged inside the lower mold (2), and the ceramic core (11) is fixed to the lower mold (2) by means of a structure and combined with the cavity movable block group (4).

8. The inverted movable block mold for precision casting according to claim 1, characterized in that: A side movable block (12) is fixedly connected inside the mold lower mold (2). The side movable block (12) is fixed to the mold lower mold (2) by bolts and is used together with a corresponding fixed movable block to achieve an automatic locking function.

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