CN219076364U - Accurate centering positioning die and injection molding machine comprising same - Google Patents
Accurate centering positioning die and injection molding machine comprising same Download PDFInfo
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- CN219076364U CN219076364U CN202222636278.0U CN202222636278U CN219076364U CN 219076364 U CN219076364 U CN 219076364U CN 202222636278 U CN202222636278 U CN 202222636278U CN 219076364 U CN219076364 U CN 219076364U
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Abstract
The utility model discloses a precise centering positioning die and an injection molding machine comprising the same, wherein the precise centering positioning die comprises a movable die table, a fixed die table and an injection molding cavity die core, the fixed die table is connected with the injection molding cavity die core, the movable die table is positioned at one end of the fixed die table, a core is embedded in the movable die table, an injection molding cavity is arranged in the injection molding cavity die core, a positioning cavity is arranged in the fixed die table, the injection molding cavity is communicated with the positioning cavity, the core can be embedded into the injection molding cavity through the positioning cavity, and a glue inlet is formed in the cavity wall of the injection molding cavity. The movable mold table drives the mold core to linearly move, the mold core enters into the positioning cavity, the positioning cavity centers and positions the mold core, the mold core is fixed, when the positioning mold table and the mold cavity mold insert are assembled, the mold core enters into the injection cavity, the injection molding melt glue is fed through the glue inlet, the injection molding melt glue flows into the injection molding cavity for injection molding, the positioning cavity centers and positions the mold core, the mold core is ensured not to be deviated, the injection molding quality is prevented from being reduced due to unstable position of the mold core in the injection molding cavity, and the yield of plastic parts is improved.
Description
Technical Field
The utility model relates to the field of injection molding, in particular to a precise centering positioning die and an injection molding machine comprising the same.
Background
With the development of mechanical processing technology, injection molding by an injection molding machine is a mature and common process, is widely applied to various plastic part products, has high molding efficiency and stable product structure, and the injection mold is a tool for producing plastic products and also a tool for endowing the plastic products with complete structures and precise dimensions, and is a processing method used for mass production of parts with complex shapes.
In the existing injection molding technology, when the mold is closed, a mold core is required to be placed into an injection molding cavity and then is fed into injection molding molten glue for injection molding, but the mold core is unstable in positioning in the mode, so that the situation of core deviation occurs, the injection molding quality is affected, and the defective rate of plastic parts is increased; meanwhile, in the injection molding process, the injection molding molten glue needs to be rapidly cooled, so that the molding time of the plastic part is shortened.
Disclosure of Invention
In order to overcome the defects of unstable core positioning, core deviation, injection molding quality influence and plastic part defective rate rise in the background technology, the utility model aims to provide a precise centering positioning mold and an injection molding machine comprising the same.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a precise centering positioning die which comprises a movable die table, a fixed die table and an injection molding cavity die core, wherein one end of the fixed die table is connected with the injection molding cavity die core, the movable die table is positioned at the other end of the fixed die table, a plurality of cores are embedded in the movable die table, a plurality of injection molding cavities are formed in the injection molding cavity die core, a plurality of positioning cavities are formed in the fixed die table, the injection molding cavities are communicated with the positioning cavities, one end of each core can penetrate through the positioning cavities and is embedded into the injection molding cavities, and a glue inlet is formed in the cavity wall of each injection molding cavity.
The movable mold table drives the mold core to linearly move, the mold core enters into the positioning cavity, the positioning cavity centers the mold core at the moment, the mold core is fixed, when the positioning mold table and the mold cavity mold insert are assembled, one end of the mold core enters into the injection cavity, then injection molding glue is fed through the glue inlet, injection molding glue flows into the injection cavity for injection molding, and the mold core is centered and positioned by the positioning cavity, so that no 'core shift' is ensured, the problem of injection molding quality reduction caused by unstable position of the mold core in the injection cavity is avoided, and the yield of plastic parts is greatly improved.
In some possible embodiments, the core is internally embedded with a water pipe, and the water outlet end of the water pipe and the top inner wall of the core are provided with a allowance.
The purpose that sets up the water pipe is in order to cool off the injection molding melting glue in the injection molding chamber for its injection molding shortens the shaping time of plastic part.
In some possible embodiments, one end of the injection cavity is embedded in the threaded cavity, the other end of the injection cavity is embedded in the injection cavity core, the threaded cavity is embedded in the injection cavity core, and the side wall of the injection cavity core is provided with a water inlet and a water outlet which respectively correspond to two ends of the threads of the threaded cavity.
The purpose of setting up the screw die cavity is in order to further cool off the injection molding melt in the injection cavity for its injection molding shortens the shaping time of plastic part.
In some possible embodiments, the thread cavity is embedded with a clamping sleeve, one end of the injection cavity is embedded at one end of the clamping sleeve, the clamping sleeve is embedded with a clamping rod, one end of the clamping rod is embedded in the injection cavity, and one end of the clamping rod can be clamped into one end of the core, so that the clamping rod moves linearly along with the core.
In some possible embodiments, the core sequentially comprises a die part, a matching part and a fixing part which are integrally formed and connected, wherein the fixing part is used for being embedded in a movable die table for fixedly connecting; the matching part is used for matching with the positioning cavity and fixing the clamping position; the mold part is used for being embedded in the injection cavity for injection molding.
Through the segmentation design to the core, carry out the adaptation one by one, guarantee the in-process of moulding plastics, the stability of core is convenient for improve the quality of moulding plastics.
In some possible implementations, the plurality of cores are embedded in the movable mold table in an annular array mode, the plurality of injection molding cavities are embedded in the fixed mold table in an annular array mode, the plurality of positioning cavities are embedded in the fixed mold table in an annular array mode, and the cores, the injection molding cavities and the positioning cavities are in one-to-one correspondence.
The annular array type design has compact structure, and reduces the processing space of injection molding processing.
In some possible embodiments, the positioning cavity includes a first tapered cavity and a second tapered cavity, the mating portion includes a first tapered portion and a second tapered portion, the first tapered portion is capable of being embedded in the first tapered cavity for taper fit, and the second tapered portion is capable of being embedded in the second tapered cavity for taper fit for positioning the core.
Through taper fit, the stability of core location is strengthened.
In a second aspect of the utility model, an injection molding machine is provided, the injection molding machine comprising the precision centering and positioning mold described above.
The utility model has the beneficial effects that: this accurate centering positioning die drives core rectilinear movement through the movable mould platform, and the core enters into the location chamber, and the location chamber is to the core centering this moment, and is fixed with the core, and when fixed mould platform and the die cavity mould benevolence of moulding plastics carry out the compound die, the one end of core enters into the chamber of moulding plastics in, then through the glue inlet send into the molten glue of moulding plastics, the molten glue of moulding plastics flows into the chamber of moulding plastics and carries out the processing of moulding plastics, because the location chamber is to the core centering location, has guaranteed not "core misalignment", avoids because of the core is unstable at the intracavity position of moulding plastics, leads to the appearance of moulding plastics quality decline problem, very big improvement the yields of plastic part.
Drawings
FIG. 1 is a schematic cross-sectional view of a precise centering and positioning mold according to an embodiment of the present utility model;
FIG. 2 is a schematic perspective view of a precise centering and positioning mold according to an embodiment of the present utility model;
FIG. 3 is a schematic perspective view of a positioning cavity in a precise centering positioning mold according to an embodiment of the present utility model;
FIG. 4 is a schematic cross-sectional view of a positioning cavity in a precise centering positioning mold according to an embodiment of the present utility model;
fig. 5 is a schematic perspective view of a core in a precise centering mold according to an embodiment of the present utility model.
In the figure: 1. a movable die table; 2. a fixed die table; 3. injection molding cavity mold insert; 4. a core; 5. a glue inlet; 6. a water pipe; 7. a thread cavity; 8. a water inlet; 9. a water outlet; 10. a cutting sleeve; 11. a clamping rod; 41. a mold section; 42. a mating portion; 43. a fixing part.
Detailed Description
The preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present utility model.
Technical problems: in the existing injection molding technology, the mold core 4 is required to be placed into an injection molding cavity when the mold is closed, and then injection molding is carried out by feeding injection molding molten glue, but the mold core 4 is unstable in positioning in the mode, so that the situation of core deviation occurs, the injection molding quality is affected, and the defective rate of plastic parts is increased.
The present utility model provides an embodiment to solve the above technical problems, and as shown in fig. 1 and fig. 2, the present embodiment provides a precise centering positioning mold, which includes a movable mold table 1, a fixed mold table 2 and an injection molding cavity mold core 3, one end of the fixed mold table 2 is connected with the injection molding cavity mold core 3 in a concave-convex manner, the movable mold table 1 is located at the other end of the fixed mold table 2, a plurality of mold cores 4 are embedded in the movable mold table 1, a plurality of injection molding cavities are provided in the injection molding cavity mold core 3, a plurality of positioning cavities are provided in the fixed mold table 2, the injection molding cavities are mutually communicated with the positioning cavities, one end of the mold cores 4 can be embedded into the injection molding cavities through the positioning cavities, and a glue inlet 5 is provided in the cavity wall of the injection molding cavities.
In the die assembly process, the movable die table 1 drives the die core 4 to linearly move, the die core 4 enters into a positioning cavity, at the moment, the positioning cavity centers the die core 4, the die core 4 is fixed, when the die table 2 and the injection molding cavity die core 3 are used for die assembly, one end of the die core 4 enters into the injection molding cavity, then injection molding molten rubber is fed into the injection molding cavity through the rubber inlet 5, and the injection molding molten rubber flows into the injection molding cavity for injection molding, because the positioning cavity centers the die core 4, the unstable position of the die core 4 in the injection molding cavity is avoided, the occurrence of the problem of injection molding quality reduction is avoided, and the yield of plastic parts is greatly improved.
On the basis of the embodiment, the water pipe 6 is embedded in the core 4, and the water outlet end of the water pipe 6 and the top inner wall of the core 4 are provided with the allowance.
After the injection molding sol in the injection molding cavity is cooled by the water inlet end of the water pipe 6, the water flows out through the water outlet end of the water pipe 6 and the allowance space arranged on the top inner wall of the core 4, and the purpose of the water pipe 6 is to cool the injection molding melt in the injection molding cavity, so that the injection molding is accelerated, and the molding time of plastic parts is shortened.
On the basis of the embodiment, one end of the injection cavity is embedded in the threaded cavity 7, the other end of the injection cavity is embedded in the injection cavity core 3, the threaded cavity 7 is embedded in the injection cavity core 3 and is in sealing fit with the inner wall of the injection cavity core 3, and the side wall of the injection cavity core 3 is provided with a water inlet 8 and a water outlet 9 which respectively correspond to two ends of threads of the threaded cavity 7.
In the injection molding process, water enters the thread cavity 7 through the water inlet 8, flows along the thread channel of the thread, flows out to the water outlet 9, and is provided with the thread cavity 7 for further cooling injection molding molten rubber in the injection molding cavity, so that the injection molding of the injection molding molten rubber is quickened, and the molding time of plastic parts is shortened.
On the basis of the embodiment, the clamping sleeve 10 is embedded in the threaded cavity 7, one end of the injection cavity is embedded in one end of the clamping sleeve 10, the clamping rod 11 is embedded in the clamping sleeve 10, one end of the clamping rod 11 is embedded in the injection cavity, and one end of the clamping rod 11 can be clamped into one end of the core 4, so that the clamping rod 11 moves linearly along with the core 4.
During die assembly, the movable die table 1 pushes the die core 4 to do linear motion, under the action of pushing force of the die core 4, the die core 4 pushes the clamping rod 11 to drive the clamping rod 11 to move in the clamping sleeve 10, until one end of the clamping rod 11 is clamped into one end of the die core 4 when the die cannot move, and at the moment, one end of the die core 4 is fixed by the clamping rod 11. And then introducing injection molding molten rubber into the injection molding cavity, and cooling and molding to form the plastic part. When the mold is opened, the movable mold table 1 pulls the mold core 4 to do linear motion, the mold core 4 pulls the clamping rod 11 under the action of the pulling force of the mold core 4, and one end of the clamping rod 11 is separated from one end of the mold core 4 under the limiting action of the clamping sleeve 10, so that injection molding is completed. In the injection molding process, the mold core 4 is further positioned and fixed, so that no core deviation is ensured, the problem of injection molding quality reduction caused by unstable position of the mold core 4 in an injection molding cavity is avoided, and the yield of plastic parts is greatly improved.
On the basis of the embodiment, the core 4 sequentially comprises a die part 41, a matching part 42 and a fixing part 43 which are integrally connected, wherein the fixing part 43 is used for being embedded in the movable die table 1 for fixedly connecting; the matching part 42 is used for matching with the positioning cavity and fixing the clamping position; the mold part 41 is used for being embedded in an injection cavity for injection molding.
Through the multistage design to core 4, fixed part 43 and movable mould platform 1, cooperation portion 42 and location chamber and mould portion 41 carry out the one-to-one with the chamber of moulding plastics, guarantee the in-process of moulding plastics, the stability of core 4, be convenient for improve the quality of moulding plastics.
On the basis of the above embodiment, the plurality of cores 4 are embedded in the movable mold table 1 in an annular array manner, the plurality of injection cavities are embedded in the fixed mold table 2 in an annular array manner, the plurality of positioning cavities are embedded in the fixed mold table 2 in an annular array manner, and the cores 4, the injection cavities and the positioning cavities are in one-to-one correspondence.
The annular array type design has compact structure, and reduces the processing space of injection molding processing.
On the basis of the above embodiment, referring to fig. 3 to 5, the positioning cavity includes a first tapered cavity 121 and a second tapered cavity 122, the matching portion 42 includes a first tapered portion 421 and a second tapered portion 422, the first tapered portion 421 can be embedded in the first tapered cavity 121 for taper fit, and the second tapered portion 422 can be embedded in the second tapered cavity 122 for taper fit, so as to position the core 4.
By the taper fit of the taper and the taper cavity, stability of positioning of the core 4 is enhanced.
In a second aspect of the utility model, an injection molding machine is provided, the injection molding machine comprising the precision centering and positioning mold described above.
The above embodiments are only for illustrating the technical concept and features of the present utility model, and are intended to enable those skilled in the art to understand the content of the present utility model and to implement the same, but are not intended to limit the scope of the present utility model, and all equivalent changes or modifications made according to the spirit of the present utility model should be included in the scope of the present utility model.
Claims (8)
1. The precise centering positioning die comprises a movable die table (1), a fixed die table (2) and an injection molding cavity die core (3), wherein one end of the fixed die table (2) is connected with the injection molding cavity die core (3), the movable die table (1) is positioned at the other end of the fixed die table (2), and the precise centering positioning die is characterized in that a plurality of cores (4) are embedded in the movable die table (1), a plurality of injection molding cavities are formed in the injection molding cavity die core (3), a plurality of positioning cavities are formed in the fixed die table (2), the injection molding cavities are communicated with the positioning cavities, one ends of the cores (4) can penetrate through the positioning cavities and are embedded into the injection molding cavities, and glue inlets (5) are formed in the cavity walls of the injection molding cavities.
2. The precise centering positioning die according to claim 1, wherein a water pipe (6) is embedded in the core (4), and a water outlet end of the water pipe (6) and the top inner wall of the core (4) are provided with a allowance.
3. The precise centering positioning die according to claim 1, wherein one end of the injection cavity is embedded in a threaded cavity (7), the other end of the injection cavity is embedded in an injection cavity core (3), the threaded cavity (7) is embedded in the injection cavity core (3), and a water inlet (8) and a water outlet (9) are formed in the side wall of the injection cavity core (3) and respectively correspond to two threaded ends of the threaded cavity (7).
4. The precise centering positioning die according to claim 3, wherein the threaded cavity (7) is internally provided with a clamping sleeve (10), one end of the injection cavity is embedded at one end of the clamping sleeve (10), the clamping sleeve (10) is internally provided with a clamping rod (11), one end of the clamping rod (11) is embedded in the injection cavity, and one end of the clamping rod (11) can be embedded at one end of the core (4), so that the clamping rod (11) moves linearly along with the core (4).
5. The precise centering positioning die according to claim 1, wherein the core (4) sequentially comprises a die part (41), a matching part (42) and a fixing part (43) which are integrally connected, and the fixing part (43) is used for being embedded in the movable die table (1) for fixedly connecting; the matching part (42) is used for matching with the positioning cavity and fixing the clamping position; the mold part (41) is used for being embedded in an injection cavity for injection molding.
6. The precise centering positioning die according to claim 1, wherein a plurality of cores (4) are embedded in the movable die table (1) in an annular array mode, a plurality of injection cavities are embedded in the fixed die table (2) in an annular array mode, a plurality of positioning cavities are embedded in the fixed die table (2) in an annular array mode, and the cores (4), the injection cavities and the positioning cavities are in one-to-one correspondence.
7. The precise centering positioning die according to claim 5, wherein the positioning cavity comprises a first conical cavity (121) and a second conical cavity (122), the matching part (42) comprises a first conical part (421) and a second conical part (422), the first conical part (421) can be embedded into the first conical cavity (121) for taper matching, and the second conical part (422) can be embedded into the second conical cavity (122) for taper matching for positioning the core (4).
8. An injection molding machine comprising the precision centering mold of any one of claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222636278.0U CN219076364U (en) | 2022-10-08 | 2022-10-08 | Accurate centering positioning die and injection molding machine comprising same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222636278.0U CN219076364U (en) | 2022-10-08 | 2022-10-08 | Accurate centering positioning die and injection molding machine comprising same |
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| CN219076364U true CN219076364U (en) | 2023-05-26 |
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| CN202222636278.0U Active CN219076364U (en) | 2022-10-08 | 2022-10-08 | Accurate centering positioning die and injection molding machine comprising same |
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