CN210758885U - Precision mold capable of uniformly feeding glue - Google Patents

Abstract

The utility model discloses an even advance gluey precision mold uses in the injection mold field, when having solved and having adopted traditional mould production, because pressure is limited during injection moulding, can appear the technical problem of the inhomogeneous condition of material at product length direction two, and its technical scheme main points are: the die comprises a movable die plate, a fixed die plate, a movable die core and a fixed die core, wherein a fixed die forming cavity is arranged on the fixed die core, and a movable die forming cavity is arranged on the movable die core; a splitter plate is arranged on one side of the fixed template, which is far away from the movable template, a glue inlet plate is arranged on one side of the splitter plate, which is far away from the fixed template, and a main runner for feeding glue is arranged on the glue inlet plate; a branch runner is arranged on one side of the branch plate, a glue inlet runner is arranged on the branch plate, the fixed die forming cavity is communicated with a glue inlet, and the glue inlet is communicated with the glue inlet runner; the technical effect who has is that the sprue makes the melting plastic that gets into from the sprue disperse the form, can be even from the entering jiao kou entering at cover half forming cavity both ends, even filling to the forming cavity in, guaranteed the quality of product.

Description

Precision mold capable of uniformly feeding glue

Technical Field

The utility model relates to an injection mold field, in particular to evenly advance gluey precision mold.

Background

The injection mold consists of a movable mold and a fixed mold, wherein the movable mold is arranged on a movable template of the injection molding machine, and the fixed mold is arranged on a fixed template of the injection molding machine. And when the mold is opened, the movable mold is separated from the fixed mold so as to take out the plastic product.

At present, chinese utility model patent with publication number CN207072080U discloses an injection mold, include: the upper die, the lower die and the glue inlet insert are arranged on the upper die; the upper die and the lower die form a die cavity; the glue inlet insert is provided with a glue inlet runner; the glue inlet insert is arranged in the upper die, a runner outlet of the glue inlet runner is communicated with the die cavity, and a runner inlet of the glue inlet runner is used for injecting glue.

Although the injection mold can mold products, when some strip-shaped products, such as space bars on a notebook computer or brackets below the space bars, are produced by adopting the traditional mold, due to the fact that pressure is limited during injection molding, the situation that materials at two ends of the product in the length direction are uneven easily occurs, and the quality of the product is difficult to guarantee.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an even advance gluey precision mold, its advantage is that the subchannel makes the melting plastic that gets into from the sprue be and disperses the form for the melting plastic can be even get into from the gluey mouth of advancing at cover half shaping chamber both ends, so that even packing becomes the shaping chamber, has guaranteed the quality of product.

The above technical purpose of the present invention can be achieved by the following technical solutions: a precision mold for uniformly feeding glue comprises a movable mold plate, a fixed mold plate, a movable mold core arranged on the movable mold plate and a fixed mold core arranged on the fixed mold plate, wherein a fixed mold forming cavity is arranged on the fixed mold core; a splitter plate is arranged on one side, away from the movable template, of the fixed template, a glue inlet plate is arranged on one side, away from the fixed template, of the splitter plate, and a main runner for glue inlet is formed in the glue inlet plate; the flow distribution plate is provided with a flow distribution channel for dispersing molten plastic to flow towards one side of the rubber inlet plate, the flow distribution plate is provided with a plurality of rubber inlet channels communicated with the flow distribution channel, the two ends of the length direction of the fixed die forming cavity are respectively provided with a rubber inlet communicated with the fixed die forming cavity, and the rubber inlet is communicated with the rubber inlet channels.

According to the technical scheme, the fixed die forming cavity and the movable die forming cavity are used for forming a product, the main runner on the glue inlet plate is used for molten plastic to enter, the sub-runners on the flow distribution plate enable the molten plastic entering from the main runner to be scattered in a divergent manner, and the glue inlet runner communicated with the sub-runners is used for guiding the molten plastic towards the direction of the movable die forming cavity; the glue inlet is used for supplying molten plastic to enter between the fixed die forming cavity and the movable die forming cavity, and the glue inlet is arranged at two ends of the fixed die forming cavity, so that the molten plastic can be formed more uniformly, and the quality of a product is ensured.

The utility model discloses further set up to: the material feeding plate is provided with a material pulling hole communicated with the rubber feeding flow channel, a material pulling nail is inserted into the material pulling hole, a material pulling head is arranged at one end, facing the flow distribution plate, of the material pulling nail, and the diameter of the material pulling head is gradually reduced towards the direction close to the material pulling nail.

According to the technical scheme, the material pulling holes are used for inserting the material pulling nails, and the material pulling heads enable molten plastic entering the plastic inlet runner to be coated on the outer side of the plastic inlet runner, so that runner waste materials can be brought together by the material pulling nails to be left on one side of the fixed die when the die is opened; the product and the runner waste can be pulled open when the movable template and the fixed template are separated so as to take down the product, thereby avoiding secondary processing of the residue at the sprue and improving the production efficiency and the product precision; also just with when the flow distribution plate separates with advancing the offset plate, the runner waste material can be stayed the flow distribution plate and advance the space department that the offset plate opened to be convenient for take off the runner waste material, so that the processing of follow-up continuation, better improvement production efficiency.

The utility model discloses further set up to: the rubber plate feeding device is characterized in that a material collecting groove communicated with a material pulling hole is formed in the position, located at the material pulling head, of the rubber plate feeding plate, and the material pulling head is arranged in the material collecting groove.

Through the technical scheme, the material collecting groove is used for increasing the amount of plastic at the material pulling head, so that the runner waste can be more firmly connected with the material pulling nail; and the part of the waste materials which are cooled can be flushed into the collecting groove, so that the cold materials are prevented from entering the forming cavity to influence the product quality.

The utility model discloses further set up to: the fixed die core is provided with a rubber opening insert, and the rubber inlet is formed in the rubber opening insert.

Through the technical scheme, the part of the glue inlet is made into the independent glue inlet insert because the glue inlet needs to be damaged easily by long-term impact of molten plastic, the glue inlet insert is convenient to disassemble and replace, the whole fixed die core is maintained when the glue inlet is damaged, and the maintenance time and the maintenance cost are saved.

The utility model discloses further set up to: the subchannel is including reposition of redundant personnel main road and reposition of redundant personnel branch road, reposition of redundant personnel main road and sprue intercommunication, reposition of redundant personnel branch road is "X" shape, reposition of redundant personnel branch road is equipped with two, two the symmetry setting of reposition of redundant personnel branch road is at the both ends of reposition of redundant personnel main road, the sprue sets up the intermediate position at the reposition of redundant personnel main road.

Through above-mentioned technical scheme, the reposition of redundant personnel main road is arranged in guiding the melting plastic that flows into in the main runner to reposition of redundant personnel branch road, and the branch road of reposition of redundant personnel is the form setting of dispersing of "X" shape for melting plastic can be more even flow into advance gluey runner in, thereby better assurance the shaping chamber can be filled evenly, guaranteed the quality of product.

The utility model discloses further set up to: one side of the flow distribution plate, which faces the flow distribution main channel, is provided with a cold trough, and the cold trough is positioned in the middle of the flow distribution main channel.

Through above-mentioned technical scheme, cold silo with hold the refrigerated plastic in the runner, avoided refrigerated plastic velocity of flow to reduce and block up the runner, also avoided refrigerated plastic to enter into the quality that influences the product in the shaping chamber.

The utility model discloses further set up to: one side of the movable template, which faces the fixed template, is provided with four positioning grooves, and the four positioning grooves are respectively arranged at four side edges of the movable template; the fixed die plate is provided with positioning blocks which are matched with the positioning grooves in an extending mode, and the positioning blocks and the positioning grooves are arranged in a one-to-one correspondence mode.

Through the technical scheme, when the die is assembled, the fixed die core and the movable die core are attached together, the positioning block is inserted into the positioning groove, the matching precision of the movable die plate and the fixed die plate is improved by the positioning groove and the positioning block, and the quality of a formed product is guaranteed.

The utility model discloses further set up to: the fixed die plate is provided with an accommodating cavity for accommodating a fixed die core, a hanging table is arranged on one side, facing the flow distribution plate, of the fixed die core, a limiting groove communicated with the accommodating cavity is formed in the fixed die core, and the hanging table is arranged in the limiting groove.

Through above-mentioned technical scheme, hold the chamber and be used for holding decide mould benevolence, the spacing groove is used for placing and hangs the platform, and the spacing groove can restrict the position of hanging the platform for decide mould benevolence is higher with the cooperation precision of fixed die plate, has guaranteed the stability of decide mould benevolence in the use, thereby has guaranteed the quality of shaping product.

To sum up, the utility model discloses following beneficial effect has:

1. the branch flow channel is arranged in an X shape, so that molten plastic can uniformly enter the fixed die forming cavity from the glue inlet, the uniformity of materials of all parts of a product is ensured, and the quality of the product is ensured;

2. the material pulling nail is used for pulling the runner waste materials, so that the runner waste materials and the products can be separated when the die is opened, the time for independently removing the runner waste materials subsequently is saved, and the production efficiency is improved.

Drawings

Fig. 1 is an overall configuration diagram of the present embodiment;

FIG. 2 is a schematic sectional view of the present embodiment;

FIG. 3 is an enlarged schematic view of portion A of FIG. 2;

FIG. 4 is a schematic view showing a connecting structure of a movable platen and a fixed platen;

FIG. 5 is an enlarged schematic view of portion B of FIG. 3;

fig. 6 is a schematic structural view of the positional relationship between the sub-runners and the main runner in the present embodiment;

fig. 7 is a schematic structural view of a runner of the present embodiment;

fig. 8 is an enlarged schematic view of part C of fig. 2.

Reference numerals: 1. moving the template; 2. fixing a template; 3. a movable mould core; 4. fixing a mold core; 5. fixing a mold forming cavity; 6. forming a cavity of the movable mold; 7. a flow distribution plate; 8. feeding a rubber plate; 9. a main flow channel; 10. a shunt channel; 11. a glue inlet flow channel; 12. a glue inlet; 13. pulling the material hole; 14. pulling the material nail; 15. pulling the stub bar; 16. a material collecting groove; 17. a glue opening insert; 18. shunting a main road; 19. shunting branch channels; 20. a cold material groove; 21. positioning a groove; 22. an accommodating chamber; 23. hanging a table; 25. a movable die cavity; 26. a limiting column; 27. a limiting hole; 28. a limiting groove; 29. and (5) positioning the blocks.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b):

referring to fig. 1 and 2, a precision mold for uniformly feeding glue comprises a movable mold plate 1, a fixed mold plate 2, a movable mold core 3 arranged on the movable mold plate 1, and a fixed mold core 4 arranged on the fixed mold plate 2; the fixed die plate 2 is provided with an accommodating cavity 22 for accommodating the fixed die core 4.

Referring to fig. 2 and 3, one side of the fixed mold core 4 departing from the movable mold plate 1 extends to form a hanging table 23, a limiting groove 28 is formed in the fixed mold core 4, the limiting groove 28 is communicated with the accommodating cavity 22, the hanging table 23 is arranged in the limiting groove 28, one side of the hanging table 23, which faces the movable mold plate 1, is attached to the bottom of the limiting groove 28, and therefore the fixed mold core 4 can be stably connected with the movable mold plate 1.

Referring to fig. 2 and 4, one side of the movable die plate 1 facing the fixed die plate 2 is provided with four positioning grooves 21, the four positioning grooves 21 are respectively arranged at four sides of the movable die plate 1, one side of the fixed die plate 2 facing the movable die plate 1 is integrally provided with a positioning block 29, the positioning block 29 and the positioning grooves 21 are complementarily arranged, the positioning block 29 and the fixed die plate 2 are integrally formed, and the positioning blocks 29 and the positioning grooves 21 are four in one-to-one correspondence. When the mold is closed, the positioning block 29 is inserted into the positioning groove 21 before the movable mold core 3 and the fixed mold core 4 are attached to each other, so that the positioning can be performed in advance, the movable mold core 3 and the fixed mold core 4 can be matched more accurately, and the product forming quality is improved.

Referring to fig. 3 and 5, a movable mold cavity 25 for accommodating the movable mold core 3 is formed in the movable mold plate 1, the fixed mold core 4 and the movable mold core 3 are attached to each other, the fixed mold molding cavity 5 is formed in one side, facing the movable mold core 3, of the fixed mold core 4, the movable mold molding cavity 6 is formed in one side, facing the fixed mold core 4, of the movable mold core 3, and the fixed mold molding cavity 5 and the movable mold molding cavity 6 are matched with each other to form a complete molding cavity.

Referring to fig. 6, one side of the fixed mold plate 2, which is away from the movable mold plate 1, is connected with a splitter plate 7 through a bolt, one side of the splitter plate 7, which is away from the fixed mold plate 2, is connected with a rubber plate 8 through a bolt, a main runner 9 is arranged at the middle position of the rubber plate 8 along the thickness direction of the rubber plate, and the main runner 9 is used for supplying molten plastic ejected from the injection molding machine to enter a runner of the mold.

Referring to fig. 6 and 7, a side of the diversion plate 7 facing the glue inlet plate 8 is provided with a diversion channel 10; the branch flow passage 10 includes a main flow passage 18 and a branch flow passage 19, the main flow passage 18 is disposed at the middle position of the flow dividing plate 7, and the length direction of the main flow passage 18 is parallel to the long side of the flow dividing plate 7. The main diversion channel 18 is communicated with the main diversion channel 9, the main diversion channel 9 is arranged in the middle of the main diversion channel 18, the branch diversion channels 19 are in an X shape, two branch diversion channels 19 are arranged, the two branch diversion channels 19 are symmetrically arranged at two ends of the main diversion channel 18, and two ends of the main diversion channel 18 are respectively arranged in the middle of the branch diversion channels 19; eight glue inlet flow passages 11 are formed in the flow distribution plate 7 along the thickness direction of the flow distribution plate, the glue inlet flow passages 11 penetrate through the flow distribution plate 7, and the eight glue inlet flow passages 11 are located at the end portions of the flow distribution branch passages 19 respectively. The middle position of the main shunting passage 18 is communicated with a cold material groove 20, and the cold material groove 20 is used for accommodating part of plastic which is cooled before reaching the forming cavity in the injection molding process.

Referring to fig. 3 and 5, the fixed mold core 4 is provided with a glue inlet 12 communicated with the fixed mold molding cavity 5 along the thickness direction, the fixed mold core 4 is provided with a glue inlet insert 17, and the glue inlet 12 is arranged on the glue inlet insert 17; the glue inlet 12 is communicated with the fixed mold molding cavity 5, and one glue inlet 12 is arranged at each of two ends of the fixed mold molding cavity 5 in the length direction.

Referring to fig. 2, a pulling hole 13 communicated with the glue inlet runner 11 is formed in the glue inlet plate 8, a limiting hole 27 is communicated with one end, far away from the flow distribution plate 7, of the pulling hole 13, and the aperture of the limiting hole 27 is larger than that of the pulling hole 13; the material pulling nail 14 is inserted into the material pulling hole 13, the material pulling nail 14 is provided with a limiting column 26, the limiting column 26 is arranged in the limiting hole 27, and the end face, facing the material pulling nail 14, of the limiting column 26 is attached to the bottom face of the limiting hole 27.

Referring to fig. 8, a pulling head 15 is arranged at one end of the pulling nail 14 facing the glue inlet runner 11, and the diameter of the pulling head 15 gradually decreases towards the direction close to the pulling nail 14. The rubber plate 8 is arranged at the material pulling head 15 and is provided with a material collecting groove 16 communicated with the material pulling hole 13, the material collecting groove 16 is hemispherical, and the material pulling head 15 is arranged in the material collecting groove 16.

After the product is injection molded, a part of the runner waste in the collecting groove 16 is coated on the material pulling head 15, and the runner waste can be carried by the material pulling nail 14 to be left on one side of the fixed template 2 when the mold is opened; the product and the runner waste can be pulled apart when the movable template 1 and the fixed template 2 are separated, so that the product can be taken down, the follow-up secondary processing of the residue at the sprue is avoided, and the production efficiency and the product precision are improved; also when separating at flow distribution plate 7 and advancing offset plate 8, the runner waste material can be stayed flow distribution plate 7 and advance the space department that offset plate 8 opened to be convenient for take off the runner waste material, so that subsequent continuation processing, better improvement production efficiency.

And (3) injection molding process:

1. plastic particles enter the mold from the main runner 9 after being heated by the injection molding machine;

2. the molten plastic enters the branch main channel 18 from the main channel 9 and then is diverged to enter the branch channel 19;

3. the molten plastic in the branch channel 19 then enters the molding cavity, thereby forming the product.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims (8)

1. A precision mold capable of uniformly feeding glue comprises a movable mold plate (1), a fixed mold plate (2), a movable mold core (3) arranged on the movable mold plate (1) and a fixed mold core (4) arranged on the fixed mold plate (2), wherein a fixed mold forming cavity (5) is arranged on the fixed mold core (4), a movable mold forming cavity (6) is arranged on the movable mold core (3), and the fixed mold forming cavity (5) and the movable mold forming cavity (6) are matched to form a complete forming cavity;

the glue feeding device is characterized in that a splitter plate (7) is arranged on one side, away from the movable template (1), of the fixed template (2), a glue feeding plate (8) is arranged on one side, away from the fixed template (2), of the splitter plate (7), and a main runner (9) for feeding glue is arranged on the glue feeding plate (8);

one side that flow distribution plate (7) were advanced offset plate (8) towards is equipped with runner (10) that make the melting plastic disperse the flow, be equipped with on flow distribution plate (7) a plurality of advance gluey runner (11) with runner (10) intercommunication, the length direction's of cover half molding cavity (5) both ends are equipped with respectively rather than advancing gluey mouth (12) of intercommunication, advance gluey mouth (12) and advance gluey runner (11) intercommunication.

2. The precision mold with uniform glue feeding function according to claim 1, wherein the glue feeding plate (8) is provided with a material pulling hole (13) communicated with the glue feeding runner (11), a material pulling nail (14) is inserted into the material pulling hole (13), one end of the material pulling nail (14) facing the flow distribution plate (7) is provided with a material pulling head (15), and the diameter of the material pulling head (15) is gradually reduced towards the direction close to the material pulling nail (14).

3. The precision die capable of feeding glue uniformly is characterized in that a material collecting groove (16) communicated with a material pulling hole (13) is formed in the position, located at the material pulling head (15), of the glue feeding plate (8), and the material pulling head (15) is arranged in the material collecting groove (16).

4. The precision mold with uniform glue feeding function according to claim 1, wherein the core insert (4) is provided with a glue inlet insert (17), and the glue inlet (12) is formed in the glue inlet insert (17).

5. The precision mold for uniformly feeding the glue according to claim 1, wherein the branch flow channel (10) comprises a branch flow main channel (18) and a branch flow channel (19), the branch flow main channel (18) is communicated with the main flow channel (9), the branch flow channel (19) is in an "X" shape, the branch flow channel (19) is provided with two branch flow channels, the two branch flow channels (19) are symmetrically arranged at two ends of the branch flow main channel (18), and the main flow channel (9) is arranged at the middle position of the branch flow main channel (18).

6. The precision mold for uniformly feeding the glue according to claim 5, wherein a cold groove (20) is arranged on one side of the flow dividing plate (7) facing the flow dividing main channel (18), and the cold groove (20) is positioned in the middle of the flow dividing main channel (18).

7. The precision mold with the uniform glue feeding function is characterized in that one side, facing the fixed mold plate (2), of the movable mold plate (1) is provided with four positioning grooves (21), and the four positioning grooves (21) are respectively arranged at four side edges of the movable mold plate (1); the fixed die plate (2) is extended with positioning blocks (29) matched with the positioning grooves (21), and the positioning blocks (29) and the positioning grooves (21) are arranged in a one-to-one correspondence mode.

8. The precision mold with the uniform glue feeding function according to claim 1, wherein the fixed mold plate (2) is provided with a containing cavity (22) for containing the fixed mold core (4), a hanging table (23) is arranged on one side of the fixed mold core (4) facing the flow distribution plate (7), a limiting groove (28) communicated with the containing cavity (22) is formed in the fixed mold core (4), and the hanging table (23) is arranged in the limiting groove (28).

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