CN209971386U - Fixing structure for embedding nut into injection mold - Google Patents
Fixing structure for embedding nut into injection mold Download PDFInfo
- Publication number
- CN209971386U CN209971386U CN201920649403.7U CN201920649403U CN209971386U CN 209971386 U CN209971386 U CN 209971386U CN 201920649403 U CN201920649403 U CN 201920649403U CN 209971386 U CN209971386 U CN 209971386U
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- Prior art keywords
- nut
- fixed
- steel
- rod
- injection mold
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- Expired - Fee Related
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- 238000002347 injection Methods 0.000 title claims abstract description 20
- 239000007924 injection Substances 0.000 title claims abstract description 20
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 69
- 239000010959 steel Substances 0.000 claims abstract description 69
- 238000003825 pressing Methods 0.000 claims abstract description 25
- 229920003023 plastic Polymers 0.000 abstract description 32
- 239000004033 plastic Substances 0.000 abstract description 32
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000000465 moulding Methods 0.000 abstract description 2
- 238000001746 injection moulding Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 239000003292 glue Substances 0.000 description 5
- 239000000084 colloidal system Substances 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- 125000004122 cyclic group Chemical group 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 206010063659 Aversion Diseases 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000071 blow moulding Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Images
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The utility model relates to the field of mold design and manufacture, and discloses a fixing structure of an injection mold embedded nut, which comprises a fixed mold core and a movable mold core, wherein a fixed rod is vertically arranged on the movable mold core, the upper part of the fixed rod extends into the mold cavity, a steel nut is sleeved on the fixed rod, and a magnetic bar is arranged at the lower part of the fixed rod; the fixed die core is vertically provided with a plurality of nut pressing rods, the lower ends of the nut pressing rods extend into the die cavity, and the upper ends of the steel nuts can be pressed when the fixed die core and the movable die core are closed. The utility model provides an among the current injection mold, the nut easily breaks away from the position of moulding plastics to lead to the plastic product to scrap or the nut drops and makes the problem of mould damage in the mould.
Description
Technical Field
The utility model relates to a mould manufacturing and designing field specifically indicates a fixed knot of injection mold embedding nut constructs.
Background
The mould is various moulds and tools for obtaining required products by injection molding, blow molding, extrusion, die casting or forging forming, smelting, stamping and other methods in industrial production. In short, a mold is a tool used to make a shaped article, the tool being made up of various parts, different molds being made up of different parts. Wherein the injection mold is a tool for producing plastic products and also a tool for giving the plastic products complete structure and precise dimensions. Injection molding is a process used to mass produce parts of some complex shapes. Specifically, the plastic melted by heating is injected into a mold cavity from an injection molding machine at high pressure, and a formed product is obtained after cooling and solidification.
In some plastic products, a nut needs to be embedded in the plastic product, and the purpose of embedding the nut is to pre-manufacture a threaded interface for the plastic product by using the nut. The method for embedding the nut can be used without processing the threaded interface after the plastic product is molded, and the method is used for manufacturing the threaded interface for the plastic product, so that the interface is accurately positioned and the manufacturing process is simple. However, in the injection molding process of the plastic product, when the movable mold core and the fixed mold core are attached and closed, the nut may fall off due to inertia, or the nut is separated from the injection position due to the pushing action of the high-pressure plastic injected by the injection molding machine, so that the plastic product is scrapped or the nut falls off in the mold to damage the mold.
SUMMERY OF THE UTILITY MODEL
Based on above technical problem, the utility model provides a fixed knot of injection mold embedding nut constructs has solved current injection mold, and the nut easily breaks away from the position of moulding plastics to lead to the plastic product to scrap or the nut drops and leads to the problem that the mould damaged in the mould.
For solving the above technical problem, the utility model discloses a technical scheme as follows:
a fixing structure for embedding a nut into an injection mold comprises a fixed mold core and a movable mold core, wherein a fixed rod is vertically arranged on the movable mold core, the upper part of the fixed rod extends into a mold cavity, a steel nut is sleeved at the upper end of the fixed rod, and a magnetic rod is arranged at the lower part of the fixed rod; the fixed die core is vertically provided with a plurality of nut pressing rods, the lower ends of the nut pressing rods extend into the die cavity, and the upper ends of the steel nuts can be pressed when the fixed die core and the movable die core are closed.
The utility model discloses in, at movable mould benevolence upward movement and cover half benevolence compound die in-process, the steel nut overlaps on the dead lever, rocks the aversion about avoiding the steel nut through the dead lever is spacing, installs the magnetic rod in the dead lever lower part simultaneously and can produce a decurrent magnetic attraction to the steel nut, avoids the steel nut to rock from top to bottom under the inertia effect. When the die assembly is completed, the nut pressing rod presses the upper end of the steel nut, so that in the injection molding process, the position of the steel nut is fixed under the combined action of the nut pressing rod, the fixing rod and the magnetic bar, the steel nut cannot fall off or deflect, and the precision of the steel nut embedding position of the plastic product is finally guaranteed.
As a preferred mode, the lower end of the fixing rod is provided with a placing hole, the diameter of the magnetic rod is larger than that of the placing hole, and the magnetic rod is embedded and fixed in the placing hole in an interference assembly mode.
As a preferred mode, the fixed rod is divided into a sleeving part and a supporting part from top to bottom, the circular diameter of the sleeving part is the same as the inner diameter of the steel nut, the upper end of the sleeving part is flush with the upper end of the steel nut, and the supporting part is the same as the outer diameter of the steel nut.
As a preferred mode, the number of the nut pressing rods is at least 3, and the nut pressing rods are distributed in an annular shape at equal intervals.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) the utility model discloses can avoid appearing steel nut and break away from the phenomenon, ensure the smooth compound die injection plastic of mould, avoid damaging the mould simultaneously.
(2) The utility model discloses a dead lever lower extreme is provided with places the hole, and magnetic rod circle footpath is greater than places the hole circle footpath to embedded being fixed in of mode through interference fit places downtheholely. The magnetic rods are assembled in an interference fit mode, and the magnetic rods are convenient and firm to install.
(3) The utility model discloses a dead lever is from last to being divided into down cup jointing portion and supporting part, cup joints the same and cup joint portion upper end of portion circle footpath and steel nut internal diameter and flushes with the steel nut upper end, and the supporting part is the same with the steel nut external diameter. Because the circle diameter of the sleeve joint part is the same as the inner diameter of the steel nut, and the outer diameter of the support part is the same as the outer diameter of the steel nut, a ring platform is formed at the joint of the support part and the sleeve joint part, when the mold is closed, the nut pressure rod can press the steel nut to enable the lower end of the steel nut to be attached to the upper end of the support part, and the colloid can enter the inner ring of the steel nut during glue. Meanwhile, the inner ring of the steel nut can be filled in the sleeving part, so that the colloid is prevented from entering and affecting the use of the plastic product. The steel nut stretches into the plastic product through the supporting part, and the plastic can wrap the steel nut in the plastic product, so that the steel nut is firmly embedded into the plastic product, and the firmness is strong.
(4) The utility model discloses a 1 quantity of nut depression bar is 3 at least, and the nut depression bar is cyclic annular equidistant distribution, and cyclic annular equidistant distribution's nut depression bar can be the annular steel nut that evenly pushes down of class, avoids because the packing force is inhomogeneous to lead to the steel nut incline.
Drawings
Fig. 1 is a schematic structural diagram of the present invention in a mold closing state.
Fig. 2 is a schematic structural diagram of the present invention in the mold splitting state.
Fig. 3 is a schematic view of the nut pressing rod, the steel nut and the fixing rod in combination (the fixed mold core and the movable mold core are removed).
Wherein, 1 nut depression bar, 2 die benevolence, 3 steel nuts, 4 die benevolence, 5 supporting parts, 6 magnetic rod, 7 die cavities, 8 cup joints the portion.
Detailed Description
The present invention will be further described with reference to the accompanying drawings. Embodiments of the present invention include, but are not limited to, the following examples.
Example 1:
referring to fig. 1 to 3, a fixing structure for an injection mold to embed a nut comprises a fixed mold core 2 and a movable mold core 4, wherein a fixed rod is vertically arranged on the movable mold core 4, the upper part of the fixed rod extends into a cavity 7, a steel nut 3 is sleeved on the upper end of the fixed rod, and a magnetic rod 6 is arranged at the lower part of the fixed rod; the fixed die core 2 is vertically provided with a plurality of nut pressing rods 1, the lower ends of the nut pressing rods 1 extend into the die cavity 7, and the upper ends of the steel nuts 3 can be pressed when the fixed die core 2 and the movable die core 4 are closed.
In this embodiment, in the process of closing the die with the movable die core 4 moving upward and the fixed die core 2, the steel nut 3 is sleeved on the fixing rod, the fixing rod is limited to prevent the steel nut 3 from shaking and shifting left and right, and meanwhile, the magnetic rod 6 installed at the lower part of the fixing rod can generate a downward magnetic attraction force on the steel nut 3 to prevent the steel nut 3 from shaking up and down under the action of inertia. When the die assembly is completed, the nut pressing rod 1 presses the upper end of the steel nut 3, so that in the injection molding process, the position of the steel nut 3 is fixed under the combined action of the nut pressing rod 1, the fixing rod and the magnetic bar 6, the steel nut 3 cannot fall off or deflect, and the accuracy of the steel nut 3 embedding position of the plastic product is finally guaranteed. In the glue injection process, as the inner ring of the steel nut 3 is sleeved on the fixed rod, the fixed rod can be filled with the inner ring of the steel nut 3, so that the glue does not enter, and even if a small amount of glue enters the inner ring of the steel nut 3, the use of a later-stage nut interface is not influenced. The other function of the fixing rod is that the plastic product can also generate a hole leading to the steel nut 3, so that the later parts such as bolts, screws and the like can be conveniently screwed in for use. After injection molding, a plurality of small holes are formed at the position of the fixing rod, and the holes do not influence the quality of the plastic product. The utility model discloses can avoid appearing steel nut 3 and break away from the phenomenon, ensure the smooth compound die injection plastic of mould, avoid damaging the mould simultaneously.
All the other parts of the mould that possess this nut fixed establishment's injection mould adopt present injection mould part alright, need not be for all the other parts of this structure customization mould, the utility model discloses applicable in each type die cavity, strong adaptability. For the fixation of the nut pressing rod 1 and the fixing rod, interference assembly can be selected, a threaded hole can be formed in the mold core, and threads are formed in the nut pressing rod 1 and the fixing rod and are screwed in and fixed.
Further, the dead lever lower extreme is provided with places the hole, and 6 circle footpaths of magnetic force stick are greater than and place the hole circle footpath to embedded being fixed in of mode through interference fit places downtheholely. Be provided with through the dead lever lower extreme and place the hole, 6 circle footpaths of magnetic rod are greater than and place the hole circle footpath to embedded being fixed in of mode through interference fit places downtheholely. The magnetic rods 6 are assembled in an interference fit mode, and the magnetic rods 6 are convenient and firm to install.
Further, the dead lever is from last to being divided into cup joint portion 8 and supporting part 5 down, and 8 circular diameters of cup joint portion are the same with 3 internal diameters of steel nut and 8 upper ends of cup joint portion flush with 3 upper ends of steel nut, and supporting part 5 is the same with 3 external diameters of steel nut. Divide into cup joint portion 8 and supporting part 5 from last to down through the dead lever, 8 circular diameters of cup joint portion are the same with 3 internal diameters of steel nut and 8 upper ends of cup joint portion flush with 3 upper ends of steel nut, and supporting part 5 is the same with 3 external diameters of steel nut. Because 8 radiuses of cup joint portion are the same with 3 internal diameters of steel nut, and the same makes supporting part 5 and 8 junctions of cup joint portion form a ring platform with supporting part 5 and 3 external diameters of steel nut, when the compound die, nut depression bar 1 can push down steel nut 3 and make its lower extreme and 5 upper ends laminating of supporting part, colloid entering 3 inner circles of steel nut when avoiding the injecting glue. The 3 inner circles of steel nut can be filled up to the portion 8 that cup joints simultaneously, avoids the colloid to get into, influences the use of later stage plastic product's nut interface.
In addition, if a ring platform formed at the joint of the supporting part 5 and the sleeve part 8 is not provided, the lower end of the steel nut 3 is attached to the lower surface of the cavity 7 of the movable die core 4, so that the depth of the steel nut 3 embedded in the plastic product cannot be adjusted through the extension of the supporting part 5. The steel nut 3 is only positioned on the surface of the plastic product after injection molding, and has weak firmness and easy falling off. And stretch into the plastic goods with steel nut 3 through supporting part 5 in, the plastic can be with its parcel in, makes inside its firm embedding plastic goods, and the fastness is strong.
Further, as a preferred mode, the number of the nut pressing rods 1 is at least 3, and the nut pressing rods 1 are distributed in an annular shape at equal intervals. The number of the nut pressing rods 1 is at least 3, the nut pressing rods 1 are distributed annularly at equal intervals, the nut pressing rods 1 distributed annularly at equal intervals can uniformly press the steel nuts 3 in an annular shape, and the steel nuts 3 are prevented from deflecting due to non-uniform pressing force.
The embodiment of the present invention is the above. The above embodiments and the specific parameters in the embodiments are only for the purpose of clearly showing the verification process of the utility model, and are not used to limit the patent protection scope of the utility model, the patent protection scope of the utility model is still subject to the claims, all the equivalent structural changes made by using the contents of the specification and the drawings of the utility model are included in the protection scope of the utility model.
Claims (4)
1. The utility model provides an injection mold embeds fixed knot of nut constructs, includes die core (2) and movable mould benevolence (4), its characterized in that: a fixed rod is vertically fixed on the movable mold core (4), the upper part of the fixed rod extends into the cavity (7), a steel nut (3) is sleeved at the upper end of the fixed rod, and a magnetic rod (6) is arranged at the lower part of the fixed rod; a plurality of nut pressing rods (1) are vertically fixed on the fixed die core (2), the lower ends of the nut pressing rods (1) extend into the die cavity (7), and the upper ends of the steel nuts (3) can be pressed when the fixed die core (2) and the movable die core (4) are closed.
2. The fixing structure of the injection mold insert nut as set forth in claim 1, wherein: the lower end of the fixing rod is provided with a placing hole, the diameter of the magnetic rod (6) is larger than that of the placing hole, and the magnetic rod is embedded and fixed in the placing hole in an interference assembly mode.
3. The fixing structure of the injection mold insert nut as set forth in claim 1, wherein: the dead lever is from last to dividing into cup joint portion (8) and supporting part (5) down, cup joint portion (8) circle footpath is the same with steel nut (3) internal diameter and cup joint portion (8) upper end flushes with steel nut (3) upper end, supporting part (5) are the same with steel nut (3) external diameter.
4. The fixing structure of the injection mold insert nut as set forth in claim 1, wherein: the number of the nut pressing rods (1) is at least 3, and the nut pressing rods (1) are distributed in an annular shape at equal intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920649403.7U CN209971386U (en) | 2019-05-07 | 2019-05-07 | Fixing structure for embedding nut into injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920649403.7U CN209971386U (en) | 2019-05-07 | 2019-05-07 | Fixing structure for embedding nut into injection mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209971386U true CN209971386U (en) | 2020-01-21 |
Family
ID=69261379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920649403.7U Expired - Fee Related CN209971386U (en) | 2019-05-07 | 2019-05-07 | Fixing structure for embedding nut into injection mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209971386U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117984510A (en) * | 2024-03-25 | 2024-05-07 | 深圳疆泰科技有限公司 | Injection mold and electronic equipment |
-
2019
- 2019-05-07 CN CN201920649403.7U patent/CN209971386U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117984510A (en) * | 2024-03-25 | 2024-05-07 | 深圳疆泰科技有限公司 | Injection mold and electronic equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200121 |