Molding die with quick change long and short die head

Abstract

The utility model relates to a forming die of quick switching long and short die head relates to the field of precision casting. The forming die of quick switching long and short die head provided by this technical scheme includes upper die, lower die and replacement aluminium block, and the upper die and the lower die have the forming cavity corresponding to the appearance of the die head, the replacement aluminium block is two groups, and corresponds the upper die and the lower die respectively, each group of replacement aluminium block is one or two, the width of each replacement aluminium block is adapted to the width of the forming cavity, and the length of each replacement aluminium block is provided with a variety of specifications according to the length of the die head to quickly switch the die head of different length, wherein the replacement aluminium block is magnetically connected with the bottom of the forming cavity. In this case, by replacing or increasing or decreasing the replacement aluminium block of different length, the length of the die head can be quickly switched, the production efficiency is high, the cost is low, and it is suitable for batch production.

Description

Technical Field

[0001] This utility model relates to the field of precision casting technology, and in particular to a molding die that allows for rapid switching between long and short die heads. Background Technology

[0002] In modern casting processes, the mold head, as a key component forming the gating system, is undeniably crucial. Because the mold head must closely fit the size and complexity of the product, its process adaptability is extremely stringent; almost every product requires a unique mold head specification. To meet this requirement, companies often need to frequently adjust the mold size and shape; however, each mold customization involves high mold-making costs. Furthermore, subsequent mold management becomes extremely cumbersome, requiring significant human and material resources for maintenance and storage, placing a heavy burden on company operations. In attempts to reduce costs, some companies have modified the original wax mold head by adding movable blocks, typically using screws to fix the blocks. While this method can adjust the mold head specifications to some extent, its drawbacks are also significant: it leaves holes in the upper and lower mold cavities. When the aluminum block is removed, these residual holes cause wax leakage during wax injection, not only wasting raw materials but also polluting the production environment and affecting product molding quality.

[0003] Faced with these practical challenges, many companies choose to temporarily adjust the length of the wax mold by adding patches or cutting into it. However, this seemingly simple method reveals serious drawbacks in mass production scenarios. Each manual modification of the mold head consumes a significant amount of time. Workers not only have to operate with extreme care but also need to frequently measure and calibrate, which greatly slows down the production pace. As order volume increases, the accumulated time spent on manual operations grows exponentially, leading to a sharp decline in overall production efficiency. At the same time, labor costs are also constantly rising. The large amount of repetitive labor not only increases the workload of workers but also easily leads to operational errors due to fatigue, further affecting product quality and production schedule. From the fixed method of mold modification to the manual adjustment of mold head size, the numerous shortcomings of existing technologies make the industry urgently need an innovative mold structure to break through this bottleneck. Summary of the Invention

[0004] The purpose of this invention is to provide a molding die that allows for quick switching between long and short die heads, thereby solving the problems existing in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A molding die for quickly switching between long and short die heads includes an upper die and a lower die, wherein the upper die and the lower die have molding cavities corresponding to the shape of the die head, and the molding die for quickly switching between long and short die heads further includes:

[0007] There are two sets of replacement aluminum blocks, corresponding to the upper mold and the lower mold respectively; each set of replacement aluminum blocks consists of one or two; the width of each replacement aluminum block is adapted to the width of the molding cavity, and the length of each replacement aluminum block is set in various specifications according to the length of the mold head, so as to quickly switch between mold heads of different lengths;

[0008] The replacement aluminum block is magnetically connected to the bottom of the molding cavity.

[0009] In one possible implementation, the bottom of the molding cavity has a first blind hole, in which a first neodymium iron boron magnet is embedded; the side of the replacement aluminum block opposite to the first blind hole has a second blind hole, in which a second neodymium iron boron magnet is embedded.

[0010] In this configuration, the magnetic poles of the first neodymium iron boron magnet and the second neodymium iron boron magnet are mutually attracted.

[0011] In one possible implementation, the diameter and depth of the first neodymium iron boron magnet are matched with those of the first blind hole, and the diameter and depth of the second neodymium iron boron magnet are matched with those of the second blind hole.

[0012] In one possible implementation, the first blind hole, the first neodymium iron boron magnet, the second blind hole, and the second neodymium iron boron magnet are all coaxially arranged.

[0013] In one possible implementation, the bottom of the molding cavity has a first blind hole, in which a first neodymium iron boron magnet is embedded; the side of the replacement aluminum block opposite to the first blind hole has a second blind hole, in which a first iron pillar is embedded, and the first neodymium iron boron magnet is magnetically connected to the first iron pillar.

[0014] In one possible implementation, the diameter and depth of the first neodymium iron boron magnet are matched with those of the first blind hole, and the diameter and depth of the first iron pillar are matched with those of the second blind hole.

[0015] In one possible implementation, the first blind hole, the first neodymium iron boron magnet, the second blind hole, and the first iron post are all coaxially arranged.

[0016] In one possible implementation, the bottom of the molding cavity has a first blind hole, in which a second iron post is embedded; the side of the replacement aluminum block opposite to the first blind hole has a second blind hole, in which a second neodymium iron boron magnet is embedded, and the second iron post is magnetically connected to the second neodymium iron boron magnet.

[0017] In one possible implementation, the second iron post matches the diameter and depth of the first blind hole, and the second neodymium iron boron magnet matches the diameter and depth of the second blind hole.

[0018] In one possible implementation, the first blind hole, the second iron pillar, the second blind hole, and the second neodymium iron boron magnet are all coaxially arranged.

[0019] The beneficial effects of the technical solution provided by this utility model include at least the following:

[0020] This technical solution provides a molding die for quickly switching between long and short mold heads, comprising an upper mold, a lower mold, and replacement aluminum blocks. The upper and lower molds have molding cavities corresponding to the shape of the mold head. There are two sets of replacement aluminum blocks, corresponding to the upper and lower molds respectively. Each set contains one or two replacement aluminum blocks. The width of each replacement aluminum block is adapted to the width of the molding cavity, and the length of each replacement aluminum block is available in various specifications depending on the length of the mold head, allowing for quick switching between mold heads of different lengths. The replacement aluminum blocks are magnetically connected to the bottom of the molding cavity. In this configuration, by replacing or adding / removing replacement aluminum blocks of different lengths, the length of the mold head can be quickly switched, resulting in high production efficiency, low cost, and suitability for mass production. Attached Figure Description

[0021] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0022] Figure 1 A schematic diagram of the structure of the molding die for quickly switching between long and short die heads provided in Embodiment 1 of this utility model is shown.

[0023] Figure 2 This diagram shows the structure of the lower mold of the molding die for the quick-switching long and short mold heads provided in Embodiment 1 of this utility model.

[0024] Figure 3 This diagram shows the structure of the lower mold of the molding die for the quick-switching long and short mold heads provided in Embodiment 2 of this utility model.

[0025] Figure 4 This diagram shows the structure of the lower mold of the molding die for the quick-switching long and short mold heads provided in Embodiment 3 of this utility model.

[0026] In the diagram: 1. Upper mold; 2. Lower mold; 3. Mold head; 4. Molding cavity; 5. Replacement aluminum block; 6. First blind hole; 7. First neodymium iron boron magnet; 8. Second blind hole; 9. Second neodymium iron boron magnet; 10. First iron pillar; 11. Second iron pillar. Detailed Implementation

[0027] 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.

[0028] In this specification, identical components are represented by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings of this utility model, while the terms "bottom surface," "top surface," "inner," and "outer" refer to directions towards or away from a specific component, respectively. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "multiple" means two or more.

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0030] Example 1

[0031] Figure 1 The diagram shows a structural schematic of a molding die for quickly switching between long and short mold heads according to Embodiment 1 of this utility model. The molding die includes an upper mold 1, a lower mold 2, and replacement aluminum blocks 5. The upper mold 1 and the lower mold 2 have molding cavities 4 corresponding to the shape of the mold head 3. There are two sets of replacement aluminum blocks 5, corresponding to the upper mold 1 and the lower mold 2 respectively. Each set of replacement aluminum blocks 5 consists of one or two blocks. The width of each replacement aluminum block 5 is adapted to the width of the molding cavity 4. The length of each replacement aluminum block 5 is set with various specifications according to the length of the mold head 3 to quickly switch between mold heads 3 of different lengths. The replacement aluminum blocks 5 are magnetically connected to the bottom of the molding cavity 4.

[0032] In one example, the mold head 3 has a symmetrical structure, and each set of replacement aluminum blocks 5 consists of two blocks. The two replacement aluminum blocks 5 are magnetically attached to both ends of the molding cavity 4, and the length of the replacement aluminum blocks 5 can be quickly changed according to the length of the mold head 3.

[0033] In one example, the mold head 3 has an asymmetrical structure, and each set of replacement aluminum blocks 5 consists of one block. One replacement aluminum block 5 is magnetically attached to one end of the molding cavity 4, and the length of the replacement aluminum block 5 can be quickly changed according to the length of the mold head 3.

[0034] In this embodiment, the molding cavities 4 of the upper mold 1 and lower mold 2 are designed according to the shape of the mold head 3, providing molding space. Two sets of replacement aluminum blocks 5 correspond to the upper mold 1 and lower mold 2, and are connected to the bottom of the molding cavity 4 by magnetic attraction, enabling quick loading and unloading. The width of the replacement aluminum blocks 5 is adapted to the molding cavity 4 to ensure stable installation, and various length specifications can flexibly meet the production needs of different length mold heads 3. In this case, the problems of low efficiency and high cost of traditional mold head modification are effectively solved, significantly improving production efficiency, reducing labor costs, and reducing the quality risks caused by frequent mold opening and manual modification.

[0035] Figure 2 This diagram illustrates the lower mold structure of the molding die for the quick-change long / short mold head provided in Embodiment 1 of this utility model. The bottom of the molding cavity 4 has a first blind hole 6, into which a first neodymium iron boron magnet 7 is embedded. On the side of the replacement aluminum block 5 opposite to the first blind hole 6, there is a second blind hole 8, into which a second neodymium iron boron magnet 9 is embedded. The magnetic poles of the first neodymium iron boron magnet 7 and the second neodymium iron boron magnet 9 are mutually attracted. The diameter and depth of the first neodymium iron boron magnet 7 and the first blind hole 6 are matched, as are the diameter and depth of the second neodymium iron boron magnet 9 and the second blind hole 8. The first blind hole 6, the first neodymium iron boron magnet 7, the second blind hole 8, and the second neodymium iron boron magnet 9 are all coaxially arranged.

[0036] In this embodiment, a first neodymium iron boron magnet 7 is embedded in the first blind hole 6 at the bottom of the molding cavity 4, and a second neodymium iron boron magnet 9 is embedded in the second blind hole 8 on the corresponding surface of the replacement aluminum block 5. The magnetic poles of the two magnets attract each other, forming a strong adsorption force that firmly fixes the replacement aluminum block 5 in the molding cavity 4. Simultaneously, the magnets and blind hole diameters and depths are matched to ensure that the magnet surface is flush with the surfaces of the molding cavity 4 and the replacement aluminum block 5 after installation, without affecting the mold forming process. The coaxial arrangement of all components ensures the precise direction of magnetic force, improving adsorption stability. In this configuration, the installation and removal of the replacement aluminum block 5 is quick and easy. Compared to traditional screw fixing methods, this avoids the risk of wax leakage, significantly improves production efficiency, and ensures product quality and production stability.

[0037] Example 2

[0038] This embodiment is basically the same as Embodiment 1, except that:

[0039] Figure 3This diagram illustrates the structure of the lower mold of the quick-change long / short mold head forming die provided in Embodiment 2 of this utility model. The bottom of the forming cavity 4 has a first blind hole 6, into which a first neodymium iron boron magnet 7 is embedded. On the side of the replacement aluminum block 5 opposite to the first blind hole 6, there is a second blind hole 8, into which a first iron pillar 10 is embedded. The first neodymium iron boron magnet 7 and the first iron pillar 10 are magnetically connected. The diameter and depth of the first neodymium iron boron magnet 7 and the first blind hole 6 are matched, as are the diameter and depth of the first iron pillar 10 and the second blind hole 8. The first blind hole 6, the first neodymium iron boron magnet 7, the second blind hole 8, and the first iron pillar 10 are all coaxially arranged.

[0040] In this embodiment, a first neodymium iron boron magnet 7 is embedded in the first blind hole 6 at the bottom of the molding cavity 4, utilizing its strong magnetism; a first iron pillar 10 is embedded in the second blind hole 8 of the replacement aluminum block 5. The iron pillar is magnetized under the action of a magnetic field, generating a magnetic attraction with the first neodymium iron boron magnet 7, thereby firmly connecting the replacement aluminum block 5 and the molding cavity 4. The diameter and depth of the first neodymium iron boron magnet 7 and the first iron pillar 10 are precisely matched with the corresponding blind holes, ensuring that the surface of the component is flat after installation and does not interfere with the molding of the mold head; the coaxial arrangement ensures uniform magnetic force transmission. Compared with the first embodiment, this design reduces the manufacturing cost of the replacement aluminum block 5 while maintaining the advantage of quick loading and unloading, avoiding wax leakage problems. While ensuring production efficiency and product quality, it optimizes production costs and improves the economy and practicality of mold use.

[0041] Example 3

[0042] This embodiment is basically the same as Embodiment 1, except that:

[0043] Figure 4 This diagram illustrates the lower mold structure of the quick-change long / short mold head forming die provided in Embodiment 3 of this utility model. The bottom of the forming cavity 4 has a first blind hole 6, within which a second iron pillar 11 is embedded. On the replacement aluminum block 5, opposite to the first blind hole 6, there is a second blind hole 8, within which a second neodymium iron boron magnet 9 is embedded. The second iron pillar 11 and the second neodymium iron boron magnet 9 are magnetically connected. The diameter and depth of the second iron pillar 11 and the first blind hole 6 are matched, as are the diameter and depth of the second neodymium iron boron magnet 9 and the second blind hole 8. The first blind hole 6, the second iron pillar 11, the second blind hole 8, and the second neodymium iron boron magnet 9 are all coaxially arranged.

[0044] In this embodiment, a second iron pillar 11 is embedded in the first blind hole 6 at the bottom of the molding cavity 4, and a second neodymium iron boron magnet 9 is embedded in the second blind hole 8 of the replacement aluminum block 5. The iron pillar is magnetized by the magnetic field of the magnet, and the two generate a magnetic attraction, thereby firmly adsorbing the replacement aluminum block 5 into the molding cavity 4. The second iron pillar 11 and the second neodymium iron boron magnet 9 are precisely matched with the diameter and depth of the corresponding blind holes, ensuring that the surface of the component is flat after installation and does not affect the molding of the die head; the coaxial arrangement of each component ensures that the magnetic force is stable and uniform.

[0045] Next, the working principle of the molding die with quick switching between long and short mold heads involved in the embodiments of this utility model will be explained.

[0046] First, based on the upper mold 1 and the lower mold 2, the forming cavity 4 is designed according to the shape of the mold head 3 to provide a standard space for mold head forming. In the production preparation stage, according to the symmetrical or asymmetrical structure and length requirements of the mold head 3 to be produced, a replacement aluminum block 5 of appropriate specifications is selected. The replacement aluminum block 5 is divided into two groups, corresponding to the upper mold 1 and the lower mold 2 respectively. The number of each group is determined to be one or two according to the mold head structure.

[0047] Next, the replacement aluminum block 5 is installed. Taking Example 1 as an example, the first blind hole 6 at the bottom of the molding cavity 4 is embedded with the first neodymium iron boron magnet 7, and the second blind hole 8 on the corresponding side of the replacement aluminum block 5 is embedded with the second neodymium iron boron magnet 9. By utilizing the mutual attraction of their magnetic poles, the replacement aluminum block 5 is quickly and firmly adsorbed onto the bottom of the molding cavity 4. In Examples 2 and 3, a stable connection is also achieved through the magnetic action of the iron pillar and the neodymium iron boron magnet. Since the diameter and depth of the magnet (or iron pillar) and the corresponding blind hole are precisely matched, and all components are coaxially arranged, the surface is ensured to be flat after installation, which does not affect the molding of the die head, while ensuring that the magnetic force is stable and uniform.

[0048] After installation, the upper mold 1 and lower mold 2 are closed, and wax liquid is injected. In the space formed by the molding cavity 4 and the replacement aluminum block 5, the wax liquid cools and solidifies to form the mold head 3 of the required length. When it is necessary to produce mold heads of different lengths, the aluminum block 5 can be quickly replaced by taking advantage of the easy disassembly of the magnetic connection. There is no need for complicated mold opening and manual modification process, which greatly improves production efficiency, reduces labor costs and quality risks, and realizes efficient switching production of long and short mold heads.

[0049] In summary, the forming mold for quickly switching between long and short mold heads provided by this technical solution includes an upper mold, a lower mold, and replacement aluminum blocks. The upper and lower molds have forming cavities corresponding to the shape of the mold head. There are two sets of replacement aluminum blocks, corresponding to the upper and lower molds respectively. Each set contains one or two replacement aluminum blocks. The width of each replacement aluminum block is adapted to the width of the forming cavity, and the length of each replacement aluminum block is set in various specifications according to the length of the mold head to quickly switch between mold heads of different lengths. The replacement aluminum blocks are magnetically connected to the bottom of the forming cavity. In this configuration, by replacing or adding / removing replacement aluminum blocks of different lengths, the length of the mold head can be quickly switched, resulting in high production efficiency, low cost, and suitability for mass production.

[0050] In the embodiments disclosed in this utility model, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments disclosed in this utility model according to the specific circumstances.

[0051] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A molding die for quickly switching between long and short die heads, comprising an upper die (1) and a lower die (2), wherein the upper die (1) and the lower die (2) have molding cavities (4) corresponding to the shape of a die head (3), characterized in that, The forming mold that allows for rapid switching between long and short die heads also includes: Replacement aluminum blocks (5) are in two sets, corresponding to the upper mold (1) and the lower mold (2) respectively; each set of replacement aluminum blocks (5) consists of one or two; the width of each replacement aluminum block (5) is adapted to the width of the molding cavity (4), and the length of each replacement aluminum block (5) is set in various specifications according to the length of the mold head (3) to quickly switch between mold heads (3) of different lengths. The replacement aluminum block (5) is magnetically connected to the bottom of the forming cavity (4).

2. The forming mold with quick-switching long and short die heads according to claim 1, characterized in that, The bottom of the forming cavity (4) has a first blind hole (6), and a first neodymium iron boron magnet (7) is embedded in the first blind hole (6); the side of the replacement aluminum block (5) opposite to the first blind hole (6) has a second blind hole (8), and a second neodymium iron boron magnet (9) is embedded in the second blind hole (8). The first neodymium iron boron magnet (7) and the second neodymium iron boron magnet (9) are in a state of mutual attraction.

3. The forming mold with quick switching between long and short die heads according to claim 2, characterized in that, The diameter and depth of the first neodymium iron boron magnet (7) are matched with those of the first blind hole (6), and the diameter and depth of the second neodymium iron boron magnet (9) are matched with those of the second blind hole (8).

4. The forming mold with quick switching between long and short die heads according to claim 2, characterized in that, The first blind hole (6), the first neodymium iron boron magnet (7), the second blind hole (8), and the second neodymium iron boron magnet (9) are all coaxially arranged.

5. The forming mold with quick switching between long and short die heads according to claim 1, characterized in that, The bottom of the forming cavity (4) has a first blind hole (6), and a first neodymium iron boron magnet (7) is embedded in the first blind hole (6); the side of the replacement aluminum block (5) opposite to the first blind hole (6) has a second blind hole (8), and a first iron pillar (10) is embedded in the second blind hole (8), and the first neodymium iron boron magnet (7) is magnetically connected to the first iron pillar (10).

6. The forming die with quick-switching long and short die heads according to claim 5, characterized in that, The diameter and depth of the first neodymium iron boron magnet (7) are matched with those of the first blind hole (6), and the diameter and depth of the first iron pillar (10) are matched with those of the second blind hole (8).

7. The forming die with quick-change long and short die heads according to claim 5, characterized in that, The first blind hole (6), the first neodymium iron boron magnet (7), the second blind hole (8), and the first iron column (10) are all coaxially arranged.

8. The forming die with quick-switching long and short die heads according to claim 1, characterized in that, The bottom of the forming cavity (4) has a first blind hole (6), and a second iron pillar (11) is embedded in the first blind hole (6); the side of the replacement aluminum block (5) opposite to the first blind hole (6) has a second blind hole (8), and a second neodymium iron boron magnet (9) is embedded in the second blind hole (8). The second iron pillar (11) is magnetically connected to the second neodymium iron boron magnet (9).

9. The forming die with quick-change long and short die heads according to claim 8, characterized in that, The diameter and depth of the second iron pillar (11) are matched with those of the first blind hole (6), and the diameter and depth of the second neodymium iron boron magnet (9) are matched with those of the second blind hole (8).

10. The forming die with quick-switching long and short die heads according to claim 8, characterized in that, The first blind hole (6), the second iron pillar (11), the second blind hole (8), and the second neodymium iron boron magnet (9) are all coaxially arranged.

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