CN219171565U - Glue feeding structure for glue feeding of diving thimble - Google Patents
Glue feeding structure for glue feeding of diving thimble Download PDFInfo
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- CN219171565U CN219171565U CN202320242912.4U CN202320242912U CN219171565U CN 219171565 U CN219171565 U CN 219171565U CN 202320242912 U CN202320242912 U CN 202320242912U CN 219171565 U CN219171565 U CN 219171565U
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- runner
- ejector pin
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- die core
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Abstract
The utility model discloses a glue feeding structure of a diving thimble glue feeding, which comprises an upper die core and a lower die core, wherein a cavity and a runner are formed between the upper die core and the lower die core; the upper die core is provided with a glue inlet, the bottom end of the glue inlet is communicated with a runner, and one end of the runner, which is far away from the glue inlet, is communicated with the lowest end of one side of the cavity; an automatic telescopic rod is embedded in the upper die core, a cutter is fixedly arranged at the bottom of the telescopic end of the automatic telescopic rod, a notch is formed at the joint of the runner and the die cavity, and the edge of the cutter is inserted into the notch; a first ejector pin hole communicated with the cavity and a second ejector pin hole communicated with the runner are formed in the lower die core, a first ejector pin is movably inserted in the first ejector pin hole, and a second ejector pin is movably inserted in the second ejector pin hole; the rubber feeding structure for feeding rubber to the ejector pins cuts off the pouring gate and the injection molding product in advance through the cutter, so that the plastic powder is prevented from being produced at the breaking position of the pouring gate when the pouring gate and the injection molding product are forced to break.
Description
Technical Field
The utility model relates to the technical field of dies, in particular to a rubber feeding structure for feeding rubber to a diving thimble.
Background
The hidden glue feeding mode is one of the most common glue feeding modes on the injection mold, and the hidden glue feeding structure is adopted, so that a glue feeding port can be automatically cut off when the formed silica gel is ejected, and the step of manually cutting the glue feeding port is reduced.
However, some injection molding products do not allow water gap printing on the outer surface, such as automobile door lock covers, and the like, and the hidden glue feeding structure has the following problems when mass production of the parts is carried out: the gate and the automobile door lock cover are forced to be broken, plastic powder is generated at the breaking position of the gate and adheres to the inside of a mold runner, the powder is punched on the surface of a part during the injection molding of the next mold, the adhesive powder which adheres to the surface of the part and is not melted can fall off in the roughening process during the electroplating of the part, pits are formed on the surface of the part, and the appearance of the part is poor and scrapped.
Disclosure of Invention
The utility model aims to provide a rubber feeding structure of a diving ejector pin, which cuts off a pouring gate and an injection molding product in advance through a cutter, avoids the plastic powder generated at a breaking position of the pouring gate when the pouring gate and the injection molding product are forced to be broken, and solves the problems in the prior art.
The aim of the utility model can be achieved by the following technical scheme:
the rubber feeding structure comprises an upper die core and a lower die core, wherein a cavity and a runner are formed between the upper die core and the lower die core;
the upper die core is provided with a glue inlet, the bottom end of the glue inlet is communicated with the runner, and one end of the runner, which is far away from the glue inlet, is communicated with the lowest end of one side of the cavity;
an automatic telescopic rod is embedded in the upper die core, a cutter is fixedly arranged at the bottom of the telescopic end of the automatic telescopic rod, a notch is formed in the joint of the runner and the die cavity, and the edge of the cutter is inserted into the notch;
the lower die core is internally provided with a first ejector pin hole communicated with the die cavity and a second ejector pin hole communicated with the runner, a first ejector pin is movably inserted in the first ejector pin hole, and a second ejector pin is movably inserted in the second ejector pin hole.
As a further scheme of the utility model: the flow channel comprises:
the main runner is communicated with the glue inlet;
the hidden flow channel is communicated with the main flow channel;
the inclined runner is communicated with one end, far away from the main runner, of the hidden runner, and one end, far away from the hidden runner, of the inclined runner is communicated with the cavity.
As a further scheme of the utility model: one end of the inclined runner, which is communicated with the cavity, is inclined downwards by 15-30 degrees.
As a further scheme of the utility model: and a cold material hole is further formed in the lower die core, and the top end of the cold material hole is communicated with the main flow channel.
As a further scheme of the utility model: the cold material holes comprise a first cold material hole and a second cold material hole, and the bottom end of the first cold material hole is communicated with the second top pinhole.
As a further scheme of the utility model: the center line of the first cold material hole, the center line of the second cold material hole, the center line of the first top pinhole and the center line of the second top pinhole are all perpendicular to the horizontal line.
As a further scheme of the utility model: the top of the upper die core is provided with a pouring channel, and the bottom end of the pouring channel is communicated with the glue inlet.
The utility model has at least the following beneficial effects:
through setting up the runner to the one end of keeping away from the mouth of glue and be connected with die cavity one side extreme lower extreme to and inlay in last mould benevolence and establish automatic telescopic link, automatic telescopic link bottom is fixedly provided with the cutter, after the completion of moulding plastics, start automatic telescopic link drive cutter and move down, the cutter is in deep runner, cut runner and die cavity junction from the product of moulding plastics in advance, cut off runner and the product of moulding plastics in advance through the cutter, avoid runner and the product of moulding plastics to be forced to stretch out and produce the plastics powder at runner fracture department, thereby avoid when the next mould is moulded plastics, the powder can be towards the surface of the product of moulding plastics, the product of moulding plastics is electroplated, the adhesion is at the product surface of moulding plastics, unmelted rubber powder can drop at coarsening in-process, form the pit on the product surface of moulding plastics, lead to moulding plastics product outward appearance bad and scrapping, even produce very little powder at the cutter excision in-process, because the runner is kept away from the one end of mouth of glue, very little powder is set up in die cavity one side extreme lower extreme.
Drawings
The utility model is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic cross-sectional view of a mold closing structure of an upper mold insert and a lower mold insert according to the present utility model;
FIG. 2 is a schematic cross-sectional view of the overall structure of the present utility model;
FIG. 3 is a schematic diagram of the upper mold core structure of the present utility model;
FIG. 4 is a schematic diagram of the lower mold insert structure of the present utility model;
FIG. 5 is an enlarged schematic view of the structure shown at A in FIG. 1;
fig. 6 is a schematic view of the structure of the automatic telescopic rod and the cutter according to the present utility model.
In the figure: 1. an upper die core; 2. a lower die core; 3. a cavity; 4. a flow passage; 5. a glue inlet; 6. an automatic telescopic rod; 7. a cutter; 8. a first top pinhole; 9. a second top pinhole; 10. a first thimble; 11. a second thimble; 12. a main flow passage; 13. a submarine flow channel; 14. an inclined flow passage; 15. a cold material hole; 16. a first cold charge hole; 17. a second cold material hole; 18. and (3) pouring channel.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-6, the utility model provides a rubber feeding structure of a diving thimble rubber feeding, which comprises an upper die core 1 and a lower die core 2, wherein when the upper die core 1 and the lower die core 2 are assembled, a cavity 3 and a runner 4 are formed between the upper die core 1 and the lower die core 2, a rubber feeding port 5 is arranged on the upper die core 1, the bottom end of the rubber feeding port 5 is communicated with the runner 4, one end of the runner 4 away from the rubber feeding port 5 is communicated with the lowest end of one side of the cavity 3, a pouring channel 18 can be arranged at the top of the upper die core 1, the bottom end of the pouring channel 18 is communicated with the rubber feeding port 5, and when the mold is assembled, molten rubber is added into the rubber feeding port 5 through the pouring channel 18, flows into the runner 4 from the rubber feeding port 5 and is injected into the cavity 3 from the runner 4, so that an injection molding product is formed in the cavity 3; an automatic telescopic rod 6 is embedded in the upper die core 1, a cutter 7 is fixedly arranged at the bottom of the telescopic end of the automatic telescopic rod 6, a notch is formed at the joint of the runner 4 and the die cavity 3, the cutter edge of the cutter 7 is inserted into the notch, and when the die is closed, the cutter edge of the cutter 7 is blocked in the notch in an airtight manner, so that molten glue is prevented from leaking from the notch; a first ejector pin hole 8 communicated with the cavity 3 and a second ejector pin hole 9 communicated with the runner 4 are formed in the lower die core 2, a first ejector pin 10 is movably inserted in the first ejector pin hole 8, and a second ejector pin 11 is movably inserted in the second ejector pin hole 9.
After injection molding is finished, an automatic telescopic rod 6 is started to drive a cutter 7 to move downwards, the cutter 7 stretches into a runner 4, the joint between the runner 4 and the cavity 3 is cut off from an injection molding product in advance, a sprue and the injection molding product are cut off in advance through the cutter 7, the situation that plastic powder is generated at a sprue fracture part due to forced breaking of the sprue and the injection molding product is avoided, so that the powder can be flushed to the surface of the injection molding product when the next mold is injected, the injection molding product adheres to the surface of the injection molding product during electroplating, unmelted rubber powder can fall off in a coarsening process, pits are formed on the surface of the injection molding product, poor appearance and scrapping of the injection molding product are caused, and even if a very small amount of powder is generated in the cutting process of the cutter 7, the very small amount of powder is difficult to be flushed into the cavity 3 because one end of the runner 4, which is far away from the rubber inlet 5, is arranged at the lowest end on one side of the cavity 3; after the cutting of the cutter 7 is completed, the upper die core 1 is separated from the lower die core 2, the first ejector pin 10 and the second ejector pin 11 are driven, the first ejector pin 10 ejects injection products in the cavity 3, the second ejector pin 11 ejects colloid in the runner 4, the colloid formed in the runner 4 is cleaned, and the next glue feeding is prevented from being influenced.
In this embodiment, the flow channel 4 includes a main flow channel 12, a latent flow channel 13, and an inclined flow channel 14, where the main flow channel 12 is communicated with the glue inlet 5; the hidden runner 13 is communicated with the main runner 12; the inclined runner 14 is communicated with one end of the hidden runner 13 far away from the main runner 12, one end of the inclined runner 14 far away from the hidden runner 13 is communicated with the cavity 3, preferably, the hidden runner 13 is vertically arranged, and one end of the inclined runner 14 communicated with the cavity 3 is inclined downwards by 15-30 degrees, so that glue solution backflow is avoided; in injection molding, the molten rubber flows into the main runner 12 from the rubber inlet 5, flows into the hidden runner 13 from the main runner 12, flows into the inclined runner 14 from the hidden runner 13, flows into the cavity 3 from the inclined runner 14, and forms an injection molded product of a specific shape in the cavity 3.
Further, a cold material hole 15 is further formed in the lower die core 2, the top end of the cold material hole 15 is communicated with the main runner 12, the cold material hole 15 comprises a first cold material hole 16 and a second cold material hole 17, the bottom end of the first cold material hole 16 is communicated with the second ejector pin hole 9, the size of the horizontal section of the first cold material hole 16 is the same as that of the horizontal section of the second ejector pin 11, the first cold material hole 16 and the second cold material hole 17 can be used for storing cold material heads so as to prevent the cold material heads from entering the die cavity 3, and the cold material heads are rapidly cooled colloid when glue solution entering the die from the pouring runner 18 initially passes through the glue inlet 5.
Preferably, the center line of the first cold material hole 16, the center line of the second cold material hole 17, the center line of the first pin hole 8 and the center line of the second pin hole 9 are all perpendicular to the horizontal line.
In the concrete implementation, the upper die core 1 and the lower die core 2 are assembled, molten glue solution is added into the glue inlet 5 through the pouring channel 18, the molten glue solution sequentially flows through the main runner 12, the hidden runner 13 and the inclined runner 14, finally enters the cavity 3, an injection molding product with a specific shape is formed in the cavity 3, after the injection molding of the product is completed, the automatic telescopic rod 6 is started to drive the cutter 7 to move downwards, the cutter 7 stretches into the runner 4, the joint between the runner 4 and the cavity 3 is cut off from the injection molding product in advance, the sprue and the injection molding product are cut off in advance through the cutter 7, and the phenomenon that the sprue and the injection molding product are forced to be broken to generate plastic powder at a sprue fracture is avoided.
After the cutter 7 cuts off the pouring gate and the injection product in advance, the upper die core 1 and the lower die core 2 are separated, the first ejector pin 10 and the second ejector pin 11 are driven, the first ejector pin 10 ejects the injection product in the cavity 3, the second ejector pin 11 ejects the residual colloid in the main runner 12, the hidden runner 13, the inclined runner 14, the first cold material hole 16 and the second cold material hole 17, and staff can further clean the residual colloid in the runner 4.
In the description of the present utility model, it should be understood that the terms "upper," "lower," "left," "right," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience of description and for simplifying the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, as well as a specific orientation configuration and operation, and thus should not be construed as limiting the present utility model.
In addition, unless explicitly stated or limited otherwise, the terms "mounted," "connected," "coupled," and the like should be construed broadly, and may be, for example, fixedly attached, detachably attached, or integrally attached; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
The foregoing detailed description of the preferred embodiments of the utility model should not be taken as limiting the scope of the utility model. All equivalent changes and modifications within the scope of the present utility model are intended to be covered by the present utility model.
Claims (7)
1. The utility model provides a structure is glued in advance of diving thimble advance gluey, includes mould benevolence (1) and lower mould benevolence (2), go up mould benevolence (1) with be formed with die cavity (3) and runner (4) between lower mould benevolence (2), its characterized in that:
the upper die core (1) is provided with a glue inlet (5), the bottom end of the glue inlet (5) is communicated with the runner (4), and one end of the runner (4) away from the glue inlet (5) is communicated with the lowest end of one side of the die cavity (3);
an automatic telescopic rod (6) is embedded in the upper die core (1), a cutter (7) is fixedly arranged at the bottom of the telescopic end of the automatic telescopic rod (6), a notch is formed in the joint of the runner (4) and the die cavity (3), and the knife edge of the cutter (7) is inserted into the notch;
the lower die core (2) is internally provided with a first ejector pin hole (8) communicated with the die cavity (3) and a second ejector pin hole (9) communicated with the runner (4), the first ejector pin hole (8) is movably inserted with a first ejector pin (10), and the second ejector pin hole (9) is movably inserted with a second ejector pin (11).
2. The feeding structure of a diving pin feeding according to claim 1, characterized in that said runner (4) comprises:
the main runner (12), the said main runner (12) communicates with said glue inlet (5);
a latent flow passage (13), the latent flow passage (13) being in communication with the main flow passage (12);
and the inclined runner (14), the inclined runner (14) is communicated with one end of the hidden runner (13) away from the main runner (12), and one end of the inclined runner (14) away from the hidden runner (13) is communicated with the cavity (3).
3. A plunger pin feeding structure according to claim 2, wherein the end of the inclined runner (14) communicating with the cavity (3) is inclined downwards by 15 ° -30 °.
4. A structure for feeding rubber into a diving pin according to claim 3, characterized in that a cold material hole (15) is further formed in the lower die core (2), and the top end of the cold material hole (15) is communicated with the main runner (12).
5. The feeding structure for feeding rubber into the ejector pins according to claim 4, wherein the cold material holes (15) comprise a first cold material hole (16) and a second cold material hole (17), and the bottom ends of the first cold material holes (16) are communicated with the holes of the second ejector pins (11).
6. The glue feeding structure of the ejector pin according to claim 5, wherein the center line of the first cold material hole (16), the center line of the second cold material hole (17), the center line of the first ejector pin hole (8) and the center line of the second ejector pin hole (9) are perpendicular to a horizontal line.
7. The glue feeding structure of the ejector pin according to claim 1, wherein a pouring channel (18) is arranged at the top of the upper die core (1), and the bottom end of the pouring channel (18) is communicated with the glue feeding port (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320242912.4U CN219171565U (en) | 2023-02-17 | 2023-02-17 | Glue feeding structure for glue feeding of diving thimble |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320242912.4U CN219171565U (en) | 2023-02-17 | 2023-02-17 | Glue feeding structure for glue feeding of diving thimble |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219171565U true CN219171565U (en) | 2023-06-13 |
Family
ID=86660432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320242912.4U Active CN219171565U (en) | 2023-02-17 | 2023-02-17 | Glue feeding structure for glue feeding of diving thimble |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219171565U (en) |
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2023
- 2023-02-17 CN CN202320242912.4U patent/CN219171565U/en active Active
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