Long-life mold with replaceable insert

Abstract

The utility model discloses a long-life mould with replaceable inserts, which belongs to the field of wax moulds and comprises an upper mould and a lower mould, a plurality of upper inserts and a plurality of lower inserts are correspondingly arranged on the upper mould and the lower mould, an upper wax injection cavity is arranged at the bottom of each upper insert, and a lower wax injection cavity is arranged at the bottom of each lower insert; a wax injection channel is arranged on the contact surface between the upper mold and the lower mold, and is communicated with a wax injection cavity formed by each upper insert and each lower insert; the mold further comprises two sets of core molds, the two sets of core molds are arranged on the two sides of the position between the upper mold body and the lower mold body respectively, and each set of core molds can stretch into the wax injection cavities formed by the upper inserts and the lower inserts in each row. Meanwhile, the ejector hole for the ejector pin to penetrate through is formed in the insert, if the structure related to the wax piece is abraded, the insert can be directly replaced, and compared with the mode that a set of mold is directly replaced, the cost is obviously reduced.

Description

Technical Field

[0001] The utility model relates to the field of wax molds, and particularly to a long-life mold with replaceable inserts. Background Art

[0002] After the wax injection of the mold is completed and cooled, after mold opening, it is necessary to use ejector pins to eject the wax parts. When the mold is repeatedly opened and the ejector pins are repeatedly ejected, the mold will be severely worn. Often, after millions of mold openings, the entire set of molds needs to be scrapped.

[0003] At present, some existing technologies adopt the setting of separate inserted modules at the holes where the ejector pins reciprocate. However, the repeated ejection action of the ejector pins often causes the inserted modules to become loose, ultimately affecting the quality of the products.

[0004] In addition, since a core mold is also provided in the wax part of this solution, and the core mold and the mold also need to move relative to each other, certain wear will also occur between the two.

[0005] In view of the above problems, the utility model designs and manufactures a long-life mold with replaceable inserts to overcome the above defects. Summary of the Invention

[0006] Regarding the problems existing in the prior art, the long-life mold with replaceable inserts provided by the utility model directly sets replaceable inserts on the mold. The wax injection cavity of the wax part is directly arranged on the insert. At the same time, ejector holes penetrated by ejector pins are arranged on the insert. If wear occurs in the structures associated with the wax part, the insert can be directly replaced, and the cost is significantly reduced compared with directly replacing a set of molds.

[0007] To achieve the above object, the technical solution adopted by the utility model is as follows: A long-life mold with replaceable inserts, including an upper mold and a lower mold. Two rows of penetrating upper insert grooves are provided on the upper mold, and each row has at least two upper insert grooves. Two upper pressure plate grooves are provided on the upper end surface of the upper mold, and each upper pressure plate groove corresponds to a row of upper insert grooves respectively. An upper pressure plate is arranged in the upper pressure plate groove, and upper positioning grooves are arranged at the bottom of the upper pressure plate groove corresponding to each upper insert groove position. The size of the upper positioning groove is larger than that of the upper insert groove;

[0008] Upper inserts are embedded in the upper insert grooves. An upper wax injection cavity is arranged on one side of the upper insert, and an upper positioning boss is arranged on the other side of the upper insert. The upper positioning boss can cooperate with the upper positioning groove;

[0009] On the lower die, two rows of through lower inlays are provided corresponding to the positions of the upper inlays. Each row has at least two lower inlays. On the lower end surface of the lower die, two lower pressing plate grooves are provided. Each lower pressing plate groove corresponds to one row of lower inlays. A lower pressing plate is provided in each lower pressing plate groove. At the bottom of each lower pressing plate groove, a lower positioning groove is provided corresponding to the position of each lower inlay. The size of the lower positioning groove is larger than the size of the lower inlay;

[0010] A lower inlay block is embedded in the lower inlay. A lower wax injection cavity is provided on one side of the lower inlay block. A lower positioning boss is provided on the other side of the upper inlay block. The lower positioning boss can cooperate with the lower positioning groove;

[0011] A wax injection channel is provided on the contact surface between the upper die and the lower die. The wax injection channel communicates with the wax injection cavities formed by each upper inlay block and lower inlay block;

[0012] It further includes two groups of core molds. The two groups of core molds are respectively arranged on both sides of the position between the upper die and the lower die. Each group of core molds can extend into the wax injection cavities formed by each row of upper inlay blocks and lower inlay blocks.

[0013] Preferably, a top hole is provided on the lower inlay block, and a movable ejector pin is provided in the top hole.

[0014] Preferably, a conical guiding hole is provided between the upper die and the lower die corresponding to the inserting direction of the core mold. The core mold can extend into the wax injection cavities formed by the upper inlay block and the lower inlay block under the guidance of the conical guiding hole.

[0015] Preferably, a core mold positioning hole is further provided between the upper die and the lower die. The core mold positioning hole and the conical guiding hole are respectively arranged on both sides of each row of upper inlays and lower inlays.

[0016] Preferably, the end of the core mold is spherical arc-shaped, and the core mold positioning hole is also spherical arc-shaped.

[0017] Preferably, a positioning hole is provided between the upper inlay block and the lower inlay block corresponding to the inserting direction of the core mold. The diameter of the positioning hole is equal to the diameter of the corresponding positioning hole position after the core mold extends into the wax injection cavity.

[0018] Preferably, the core mold is connected to an inclined wedge slider.

[0019] Preferably, guiding grooves are provided on both sides between the upper die and the lower die. The inclined wedge slider can slide in the guiding grooves for guiding.

[0020] Preferably, cooling channels are provided in the upper inlay block and the lower inlay block, and a cooling medium can be passed through the cooling channels.

[0021] Preferably, the upper inlay block and the lower inlay block are subjected to DICOAT treatment.

[0022] The advantages of this utility model are as follows:

[0023] 1. The utility model separately sets the most easily worn parts in the upper die and the lower die in a split manner, and with the structure of multiple cavities in one die, corresponding inserts can be mass-produced, and it is also convenient to quickly replace the inserts when they are worn.

[0024] 2. The utility model utilizes a group of core molds corresponding to multiple wax injection cavities at the same time, which can realize the one-time mass production of wax parts and avoid the cumbersome operation process of the traditional one-to-one core mold.

[0025] 3. The core mold of the utility model utilizes the conical guide holes, core mold positioning holes on the upper die and the lower die, and the positioning holes on the upper insert and the lower insert, further improving the matching accuracy between the upper and lower inserts and the upper and lower molds, and ensuring the quality of wax parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of a long-life mold with replaceable inserts;

[0027] Figure 2 It is a bottom view structural schematic diagram of the upper die of the utility model;

[0028] Figure 3 It is an axonometric view of the upper die of the utility model;

[0029] Figure 4 It is a bottom view of the upper die of the utility model;

[0030] Figure 5 It is a structural schematic diagram of several upper inserts of the utility model;

[0031] Figure 6 It is a bottom view structural schematic diagram of several upper inserts of the utility model;

[0032] Figure 7 It is an axonometric view of the lower die of the utility model;

[0033] Figure 8 It is a bottom view structural schematic diagram of the lower die of the utility model;

[0034] Figure 9 It is a structural schematic diagram of the lower die of the utility model after being matched with several lower inserts;

[0035] Figure 10 It is a structural schematic diagram of several lower inserts of the utility model;

[0036] Figure 11 It is a structural schematic diagram of the utility model after removing the upper die and the lower die;

[0037] Figure 12 It is a schematic diagram of the core mold of the utility model.

[0038] In the figure: 1 - upper die, 2 - lower die, 3 - wax injection channel, 4 - guiding groove, 5 - conical guiding hole, 6 - upper insert block, 7 - lower insert block, 8 - core mold positioning hole, 9 - upper pressure plate, 10 - lower pressure plate, 11 - upper insert groove, 12 - upper positioning groove, 13 - upper pressure plate groove, 21 - lower insert groove, 22 - lower positioning groove, 23 - lower pressure plate groove, 61 - upper positioning boss, 62 - positioning hole, 63 - upper wax injection cavity, 71 - lower positioning boss, 72 - ejector hole, 73 - lower wax injection cavity, 100 - wedge slider, 101 - core mold, 102 - ejector pin. Detailed implementation mode

[0039] For the convenience of those skilled in the art to understand, the following further describes the present utility model in conjunction with the accompanying drawings.

[0040] As Figures 1 to 12 shown, a long - life mold with replaceable inserts includes an upper die 1 and a lower die 2. There are two rows of through - upper insert grooves 11 on the upper die 1, and at least two upper insert grooves 11 are provided in each row. There are two upper pressure plate grooves 13 on the upper end face of the upper die 1, and each upper pressure plate groove 13 corresponds to a row of upper insert grooves 11. An upper pressure plate 9 is provided in the upper pressure plate groove 13. At the position corresponding to each upper insert groove 11 at the bottom of the upper pressure plate groove 13, there is an upper positioning groove 12, and the size of the upper positioning groove 12 is larger than that of the upper insert groove 11.

[0041] An upper insert block 6 is embedded in the upper insert groove 11. One side of the upper insert block 6 is provided with an upper wax injection cavity 63, and the other side of the upper insert block 6 is provided with an upper positioning boss 61, and the upper positioning boss 61 can cooperate with the upper positioning groove 12.

[0042] Corresponding to the position of the upper insert groove 11 on the lower die 2 of the present utility model, there are two rows of through - lower insert grooves 21, and at least two lower insert grooves 21 are provided in each row. There are two lower pressure plate grooves 23 on the lower end face of the lower die 2, and each lower pressure plate groove 23 corresponds to a row of lower insert grooves 21. A lower pressure plate 10 is provided in the lower pressure plate groove 23. At the position corresponding to each lower insert groove 21 at the bottom of the lower pressure plate groove 23, there is a lower positioning groove 22, and the size of the lower positioning groove 22 is larger than that of the lower insert groove 21.

[0043] A lower insert block 7 is embedded in the lower insert groove 21. One side of the lower insert block 7 is provided with a lower wax injection cavity 73, and the other side of the upper insert block 6 is provided with a lower positioning boss 71, and the lower positioning boss 71 can cooperate with the lower positioning groove 22;

[0044] In the present utility model, the most easily worn parts in the upper die 1 and the lower die 2 are separately set in a split manner, and with the structure of multiple cavities in one mold, corresponding inserts can be batch - produced, and it is also convenient to quickly replace the inserts when they are worn. The upper insert block 6 and the lower insert block 7 are preferably subjected to DICOAT treatment, so as to further improve the wear resistance of the upper insert block 6 and the lower insert block 7.

[0045] Specifically, a wax injection channel 3 is provided on the contact surface between the upper mold 1 and the lower mold 2, and the wax injection channel 3 communicates with the wax injection cavities formed by each upper insert 6 and lower insert 7.

[0046] It further includes two groups of core molds 101, which are respectively arranged on both sides of the position between the upper mold 1 and the lower mold 2. Each group of core molds 101 can extend into the wax injection cavities formed by each row of upper inserts 6 and lower inserts 7. By using one group of core molds 101 to correspond to multiple wax injection cavities simultaneously, the one-time batch production of wax parts can be realized, avoiding the cumbersome operation process of the traditional one-to-one core mold 101.

[0047] In the lower insert 7 of the present utility model, a top hole 72 is provided, and a movable ejector pin 102 is arranged in the top hole 72. In the actual use process, the wear of the top hole 72 is often the most serious, which will also affect the quality of the wax parts. Therefore, the top hole 72 is directly arranged on the insert. Once the top hole 72 is severely worn, the upper insert 6 can be directly replaced.

[0048] Conical guide holes 5 are provided between the upper mold 1 and the lower mold 2 corresponding to the insertion direction of the core mold 101. The core mold 101 can extend into the wax injection cavities formed by the upper insert 6 and the lower insert 7 under the guidance of the conical guide holes 5. Core mold positioning holes 628 are also provided between the upper mold 1 and the lower mold 2. The core mold positioning holes 628 and the conical guide holes 5 are respectively arranged on both sides of each row of upper insert grooves 11 and lower insert grooves 21. The end of the core mold 101 is spherical arc-shaped, and the core mold positioning hole 628 is also spherical arc-shaped.

[0049] Positioning holes 62 are provided between the upper insert 6 and the lower insert 7 of the present utility model corresponding to the insertion direction of the core mold 101. The diameter of the positioning hole 62 is equal to the diameter of the corresponding positioning hole 62 position after the core mold 101 extends into the wax injection cavity.

[0050] By using the conical guide holes 5 on the upper mold 1 and the lower mold 2, the core mold positioning holes 628, and the positioning holes 62 on the upper insert 6 and the lower insert 7, the core mold 101 further improves the fitting accuracy between the upper and lower inserts 7 and the upper and lower molds 2, ensuring the quality of the wax parts.

[0051] The core mold 101 of the present utility model is connected to the inclined wedge slider 100. Guide grooves 4 are provided on both sides between the upper mold 1 and the lower mold 2. The inclined wedge slider 100 can slide in the guide grooves 4 for guiding.

[0052] Cooling channels are preferably provided in the upper insert 6 and the lower insert 7, and a cooling medium can be passed through the cooling channels, thereby ensuring the rapid cooling and forming of the product after wax injection.

[0053] It should be understood that the use of these embodiments is only for illustrating the present utility model rather than intending to limit the protection scope of the present utility model. In addition, it should also be understood that after reading the technical content of the present utility model, those skilled in the art can make various changes, modifications and / or variations to the present utility model, and all these equivalent forms also fall within the protection scope defined by the appended claims of this application.

Claims

1. A long-life mold with replaceable inserts, characterized in that It includes an upper mold and a lower mold. There are two rows of through upper inlay grooves on the upper mold, with at least two upper inlay grooves in each row. There are two upper pressure plate grooves on the upper end face of the upper mold, and each upper pressure plate groove corresponds to a row of upper inlay grooves. An upper pressure plate is arranged in the upper pressure plate groove. Upper positioning grooves are arranged at the bottom of the upper pressure plate groove corresponding to each upper inlay groove position, and the size of the upper positioning groove is larger than that of the upper inlay groove; An upper inlay block is embedded in the upper inlay groove. An upper wax injection cavity is arranged on one side of the upper inlay block, and an upper positioning boss is arranged on the other side of the upper inlay block. The upper positioning boss can cooperate with the upper positioning groove; Two rows of through lower inlay grooves are arranged on the lower mold corresponding to the positions of the upper inlay grooves, with at least two lower inlay grooves in each row. There are two lower pressure plate grooves on the lower end face of the lower mold, and each lower pressure plate groove corresponds to a row of lower inlay grooves. A lower pressure plate is arranged in the lower pressure plate groove. Lower positioning grooves are arranged at the bottom of the lower pressure plate groove corresponding to each lower inlay groove position, and the size of the lower positioning groove is larger than that of the lower inlay groove; A lower inlay block is embedded in the lower inlay groove. A lower wax injection cavity is arranged on one side of the lower inlay block, and a lower positioning boss is arranged on the other side of the upper inlay block. The lower positioning boss can cooperate with the lower positioning groove; A wax injection channel is arranged on the contact surface between the upper mold and the lower mold, and the wax injection channel communicates with the wax injection cavities formed by each upper inlay block and lower inlay block; It also includes two groups of core molds. The two groups of core molds are respectively arranged on both sides of the position between the upper mold and the lower mold. Each group of core molds can extend into the wax injection cavities formed by each row of upper inlay blocks and lower inlay blocks.

2. The long-life mold with replaceable inserts according to claim 1, characterized in that, A top hole is arranged on the lower inlay block, and a movable ejector pin is arranged in the top hole.

3. The long-life mold with replaceable inserts according to claim 1, characterized in that Conical guide holes are arranged between the upper mold and the lower mold corresponding to the insertion direction of the core molds. The core molds can extend into the wax injection cavities formed by the upper inlay blocks and lower inlay blocks under the guidance of the conical guide holes.

4. The long-life mold with replaceable inserts according to claim 3, characterized in that, Core mold positioning holes are also arranged between the upper mold and the lower mold. The core mold positioning holes and the conical guide holes are respectively arranged on both sides of each row of upper inlay grooves and lower inlay grooves.

5. The long-life mold with replaceable inserts according to claim 4, characterized in that, The end of the core mold is spherical arc-shaped, and the core mold positioning hole is also spherical arc-shaped.

6. The long-life mold with replaceable inserts according to claim 4, characterized in that Positioning holes are arranged between the upper inlay block and the lower inlay block corresponding to the insertion direction of the core molds, and the diameter of the positioning holes is equal to the diameter of the corresponding positioning hole position after the core molds extend into the wax injection cavities.

7. A long-life mold with replaceable inserts according to claim 1, characterized in that, The core molds are connected to the wedge sliders.

8. A long-life mold with replaceable inserts according to claim 7, characterized in that, Guide grooves are arranged on both sides between the upper mold and the lower mold. The wedge sliders can slide in the guide grooves for guiding.

9. The long-life mold with replaceable inserts according to claim 1, characterized in that, Cooling channels are arranged in the upper inlay blocks and lower inlay blocks, and cooling medium can pass through the cooling channels.

10. The long-life mold with replaceable inserts according to claim 1, characterized in that, The upper inlay blocks and lower inlay blocks have been subjected to DICOAT treatment.

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