Precise injection mold

Abstract

The utility model relates to a precise injection mold which comprises an upper mold core, a lower mold core and a lower mold core, the pressing block is matched with the first through hole, one end of the pressing block is of an inverted convex structure, and the other end of the pressing block is engraved with structural patterns; the concave block is arranged at one end, with the inverted convex structure, of the pressing block and is provided with a fixing hole; the upper die plate is provided with a second through hole which is consistent with the first through hole in inclination angle, the second through hole is communicated with the first through hole, and the second through hole is matched with the concave block; and the concave block is locked with the fixing plate through the fixing hole. The inclined first through hole is formed in the upper mold core and is used in cooperation with the pressing block, the concave block and other components, and injection molding of the concave part in the arc structure can be accurately achieved. By means of the design, the mold can easily meet the injection molding requirement of a complex structure, bulging is avoided, and the product precision is improved.

Description

Technical Field

[0001] The utility model relates to the field of molds, in particular to a precision injection mold. Background Art

[0002] In the field of injection molding, with the continuous development of industrial technology and the increasing diversification of product demand, the requirements for the precision and complexity of injection molds are becoming higher and higher.

[0003] Especially for those parts that need to be injection molded with arc structures and recessed parts, traditional injection molds often find it difficult to achieve ideal molding effects. Traditional injection molds usually use direct injection molding when dealing with recessed parts in arc structures. Due to the particularity of the arc structure, bulges often appear in the recessed parts, resulting in poor product precision and even affecting product quality. Utility Model Content

[0004] In view of the above situation, it is necessary to provide a precision injection mold that solves at least one of the above problems, including:

[0005] The upper die core is provided with an inclined first through hole;

[0006] A pressing block, which fits into the first through hole, one end of which is an inverted convex structure and the other end of which is engraved with a structural pattern;

[0007] A concave block is arranged at one end of the pressing block having the inverted convex structure and is provided with a fixing hole;

[0008] The upper template is provided with a second through hole having the same inclination angle as the first through hole, the second through hole is connected with the first through hole, and the second through hole fits the concave block;

[0009] and a fixing plate, wherein the concave block is locked with the fixing plate through the fixing hole.

[0010] Preferably, the upper template is also provided with positioning holes.

[0011] Preferably, there are four positioning holes, which are symmetrically distributed in pairs on the upper template.

[0012] Preferably, a positioning column is further included, which is arranged in the positioning hole.

[0013] Preferably, it also includes a first positioning through hole and a second positioning through hole, the first positioning through hole is arranged on the upper mold core, and the second positioning through hole is arranged on the upper template, and when the upper mold core is covered with the upper template, the first positioning through hole is connected with the second positioning through hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] 1. Upper mold core; 11. First through hole; 2. Press block; 3. Concave block; 31. Fixing hole; 4. Upper mold plate; 41. Second through hole; 42. Positioning hole; 5. Fixing plate; 6. Positioning column; 7. First positioning through hole; 8. Second positioning through hole.

[0015] Figure 1 It is a cross-sectional schematic diagram of a precision injection mold according to an embodiment of the utility model.

[0016] Figure 2 It is a structural schematic diagram of an upper template of an embodiment of the utility model.

[0017] Figure 3 It is a schematic diagram of a briquetting extrusion molding die according to an embodiment of the utility model.

[0018] Figure 4 It is a structural schematic diagram of a pressing block and a concave block in an embodiment of the utility model. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model xxxx is further described in detail in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0020] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "center", "longitudinal", "lateral", "up", "down", "left", "right", "inside", "outside", "front end", "rear end", "head", "tail", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood by specific circumstances.

[0022] See also Figures 1 to 4The precision injection mold of the embodiment of the utility model includes: an upper mold core 1, which is provided with an inclined first through hole 11; a pressing block 2, which is matched with the first through hole 11, one end of which is an inverted convex structure and the other end is engraved with a structural pattern; a concave block 3, which is arranged at the end of the pressing block 2 with the inverted convex structure and is provided with a fixing hole 31; an upper mold plate 4, which is provided with a second through hole 41 with the same inclination angle as the first through hole 11, the second through hole 41 is connected to the first through hole 11, and the second through hole 41 is matched with the concave block 3; and a fixing plate 5, the concave block 3 is locked with the fixing plate 5 through the fixing hole 31.

[0023] In the above embodiment, the inclined first through hole 11 opened in the upper mold core 1 has an inclined angle, and the pressing block 2 is embedded therein. The other end of the pressing block 2 is engraved with a structural pattern, which will be transferred to the injection molded part during the injection molding process to form a specific texture or shape. At the same time, the concave block 3 is arranged at one end of the pressing block 2 with an inverted convex structure, and is embedded in the first through hole 11 together with the pressing block 2. The fixing hole 31 provided on the concave block 3 ensures that the positions of the pressing block 2 and the concave block 3 are stable, and the two are locked. The second through hole 41 on the upper mold plate 4 has the same inclination angle as the first through hole 11, and the two are connected, which provides space for the insertion of the concave block 3. When the concave block 3 is inserted into the second through hole 41, its shape matches the second through hole 41, thereby ensuring the accuracy and stability of the entire mold. Finally, the fixing plate 5 locks the concave block 3 in the mold through the fixing hole 31 on the concave block 3. This locking mechanism not only ensures the stability of the pressing block 2 and the concave block 3 during the injection molding process, but also enables the mold to maintain good accuracy and stability after multiple uses. In summary, the working principle of the precision injection mold is that the pressing block 2 and the concave block 3 can be firmly embedded in the mold to form a locking mechanism, and in the mold for injection molding of the arc structure, since one place is squeezed by the pressing block 2, the other places form an arc structure, and the pressed place forms a concave structure. Since the concave part is squeezed all the time during the whole process, no bulge can be formed. At the same time, the locking mechanism of the concave block 3, the pressing block 2 and the fixing plate 5 ensures the stability and precision of the mold, thereby realizing the injection molding production of the concave structure in the arc mold.

[0024] See also Figures 1 to 4 In another embodiment, the upper template 4 is further provided with a positioning hole 42 .

[0025] In the above embodiment, the positioning holes 42 are used to ensure accurate alignment of the mold during assembly and use. When the mold is assembled, the positioning holes 42 can be used to accurately align the upper mold plate 4 with the fixing plate 5, thereby ensuring the overall accuracy and stability of the mold. During the injection molding process, the positioning holes 42 can also ensure that the various parts of the mold maintain the correct relative position, avoiding injection defects caused by misalignment.

[0026] See also Figures 1 to 4 In another embodiment, four positioning holes 42 are provided, and they are symmetrically distributed in pairs on the upper template 4 .

[0027] In the above embodiment, the four positioning holes 42 are symmetrically distributed in pairs, ensuring high-precision positioning of the mold during assembly and operation. When the various parts of the mold need to be assembled, the mold can be accurately aligned by matching these positioning holes 42 with corresponding positioning pins or columns. This symmetrical distribution method also increases the stability and symmetry of the mold structure, reduces errors and deformations during the injection molding process, and thus ensures high precision and high quality of the injection molded parts.

[0028] See also Figures 1 to 4 In another embodiment, a positioning column 6 is further included, which is arranged in the positioning hole 42.

[0029] In the above embodiment, the positioning column 6 and the positioning form a complete positioning system. This design can ensure that the upper template 4 and the fixed plate 5 are accurately aligned when the mold is assembled, eliminating the position offset caused by assembly errors. At the same time, during the injection molding process, the cooperation between the positioning column 6 and the positioning hole 42 also ensures the stability of the mold, avoids injection defects caused by mold movement or deformation, and thus ensures the high precision and high quality of the injection molded parts.

[0030] See also Figures 1 to 4 In another embodiment, it further includes a first positioning through hole 7 and a second positioning through hole 8, wherein the first positioning through hole 7 is arranged on the upper mold core 1, and the second positioning through hole 8 is arranged on the upper mold plate 4. When the upper mold core 1 is covered with the upper mold plate 4, the first positioning through hole 7 is connected with the second positioning through hole 8.

[0031] In the above embodiment, the first positioning through hole 7 and the second positioning through hole 8 are designed to ensure the precise alignment of the mold during assembly and operation. The first positioning through hole 7 is arranged on the upper mold core 1, and the second positioning through hole 8 is arranged on the upper mold plate 4. When the upper mold core 1 is covered with the upper mold plate 4, the two positioning holes 42 will be accurately connected to form a complete positioning system. The working principle of this design is reflected in the assembly and use of the mold. When the mold is assembled, by ensuring the precise alignment and connection of the first positioning through hole 7 and the second positioning through hole 8, the precise alignment between the upper mold core 1 and the upper mold plate 4 can be achieved. This alignment method not only improves the accuracy of mold assembly, but also ensures the stability and reliability of the mold during the injection molding process. During the injection molding process, the connection state of the first positioning through hole 7 and the second positioning through hole 8 ensures the close connection and coordinated work between the various parts of the mold. This helps to reduce errors and deformations during the injection molding process and ensure the quality and dimensional accuracy of the injection molded parts. In addition, the design of the positioning hole 42 also helps to improve the durability and service life of the mold and reduce production failures caused by mold wear or deformation. In summary, the design of the first positioning through hole 7 and the second positioning through hole 8 plays a vital role in the precision injection mold. Through precise alignment and connection, they ensure the accuracy, stability and durability of the mold and provide reliable technical support for injection molding production.

[0032] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A precision injection mold, characterized in that: include: The upper die core is provided with an inclined first through hole; A pressing block, which fits into the first through hole, one end of which is an inverted convex structure and the other end of which is engraved with a structural pattern; A concave block is arranged at one end of the pressing block having the inverted convex structure and is provided with a fixing hole; The upper template is provided with a second through hole having the same inclination angle as the first through hole, the second through hole is connected with the first through hole, and the second through hole fits the concave block; and a fixing plate, wherein the concave block is locked with the fixing plate through the fixing hole.

2. The precision injection mold according to claim 1, characterized in that: The upper template is also provided with positioning holes.

3. The precision injection mold according to claim 2, characterized in that: There are four positioning holes, which are symmetrically distributed in pairs on the upper template.

4. The precision injection mold according to claim 2, characterized in that: It also includes a positioning column, which is arranged in the positioning hole.

5. The precision injection mold according to claim 1, characterized in that: It also includes a first positioning through hole and a second positioning through hole, wherein the first positioning through hole is arranged on the upper mold core, and the second positioning through hole is arranged on the upper template, and when the upper mold core is covered with the upper template, the first positioning through hole is connected with the second positioning through hole.

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