CN108544719B - Rubber injection molding method and mold containing metal inserts - Google Patents
Rubber injection molding method and mold containing metal inserts Download PDFInfo
- Publication number
- CN108544719B CN108544719B CN201810454445.5A CN201810454445A CN108544719B CN 108544719 B CN108544719 B CN 108544719B CN 201810454445 A CN201810454445 A CN 201810454445A CN 108544719 B CN108544719 B CN 108544719B
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- rubber
- groove
- metal insert
- overflow
- mold
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- 239000002184 metal Substances 0.000 title claims abstract description 75
- 238000001746 injection moulding Methods 0.000 title claims abstract description 45
- 239000003292 glue Substances 0.000 claims abstract description 65
- 238000002347 injection Methods 0.000 claims abstract description 31
- 239000007924 injection Substances 0.000 claims abstract description 31
- 238000007789 sealing Methods 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 14
- 230000000149 penetrating effect Effects 0.000 claims abstract description 5
- 238000009966 trimming Methods 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 4
- 239000002699 waste material Substances 0.000 abstract description 9
- 238000010586 diagram Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/2669—Moulds with means for removing excess material, e.g. with overflow cavities
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
A rubber injection mold containing a metal insert is used for carrying out injection molding on a rubber injection molding part formed by an annular metal insert and an annular rubber part, the mold comprises an upper mold and a lower mold, the upper mold is provided with an upper mold concave part for accommodating the metal insert and an upper mold rubber groove for forming the rubber part, the lower mold is provided with a lower mold boss penetrating into a central hole of the metal insert, and a first rubber overflow groove and a second rubber overflow groove are respectively arranged in the upper mold concave part and adjacent to the inner side and the outer side of the upper mold rubber groove. The invention also provides a method for injection molding by using the mold. The die provided by the invention has the advantages that the first glue overflow groove and the second glue overflow groove are arranged, the sealing rings can be formed by surrounding the inner side and the outer side of the glue overflow groove which are close to the upper die by utilizing the glue overflow phenomenon, the overflowed waste is used for sealing and automatic size adjustment, the waste and burrs are reduced, and important parts in the die such as a sliding block, a guide pillar and the like can be protected by utilizing the overflow, so that the damage to the die caused by the waste entering the precise part is prevented.
Description
Technical Field
The invention relates to the field of injection molding technology and dies, in particular to a rubber injection molding method and a die containing a metal insert.
Background
Among insert molding techniques, particularly in the field of manufacturing and application of electronic equipment parts such as mobile phones, a rubber injection molding technique of a metal insert is often used, and the metal insert is usually placed in a mold in advance, and rubber is injected into the mold by an injection molding machine to form a whole with the metal insert.
Fig. 1 shows a schematic perspective view of a rubber injection molding part containing a metal insert, fig. 2 is a cross-sectional view of the part shown in fig. 1, the part 1 shown in fig. 1 and 2 is composed of a metal insert 11 and a rubber part 12, the metal insert 11 is a circular metal sheet, and the rubber part 12 is also a circular structure, which is tightly integrated with the metal insert 11 through an injection molding process. Wherein the metal insert 11 and the rubber part 12 have a central bore 13 of the same diameter and coaxially arranged. The parts shown in fig. 1-2 are typically injection molded using the mold shown in fig. 3-4, wherein fig. 3 shows an exploded view of the mold of the conventional process for molding rubber injection molded parts containing metal inserts shown in fig. 1-2; fig. 4 is a schematic diagram of the mold closing and injection state of fig. 3. The mold shown in fig. 3 to 4 includes an upper mold 3 and a lower mold 4, the upper mold 3 having an upper mold recess 31 for receiving the metal insert 11 and an upper mold glue groove 32 for forming the rubber portion 12, and the lower mold 4 having a lower mold boss 43 penetrating into the center hole 13 of the metal insert 11. Of course, the upper die 3 is also provided with a runner or the like (not shown in the drawings) for forming the rubber portion 12, which communicates with the upper die rubber groove 32.
In the processing process shown in fig. 3 to 4, the depth of the upper die recess 31 is designed to be identical to the height of the lower die boss 43 and exactly equal to the design thickness of the metal insert 11, so that the part 1 shown in fig. 1 to 2 can be obtained exactly by the injection molding process during normal processing. However, in actual production, the metal insert 11 has errors due to different thicknesses of material batches, and it is difficult to process the metal insert 11 with different thicknesses and batches by using different molds due to cost and other reasons, so that a glue overflow problem occurs. For example, if the thickness of the metal insert 11 is smaller than the design thickness, the rubber injected in the upper mold rubber groove 32 overflows to cover the entire annular upper surface of the metal insert 11 at the time of injection molding, and the overflowed excessive rubber needs to be removed after the demolding. Alternatively, if the thickness of the metal insert 11 is greater than the design thickness, a gap may be formed between the upper mold recess 31 and the lower mold boss 43, and the rubber injected in the upper mold rubber groove 32 may overflow the central hole 13 covering the metal insert 11, and the overflowed excessive rubber may also need to be removed after the demolding. Therefore, when the mold of fig. 3-4 is used for processing, the problem of glue overflow is difficult to stop, overflowed burrs need to be manually removed, the process is increased, the efficiency is reduced, overflowed waste is wasted, and overflowed waste can possibly enter important parts of the mold, such as a sliding block, a guide pillar and the like, so that the mold is easily damaged.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a rubber injection molding method and a mold containing a metal insert, so as to reduce or avoid the problems.
Specifically, the invention provides a rubber injection molding method and a mold containing a metal insert, which utilize overflowed waste materials for sealing and automatic size adjustment, can reduce waste materials and burrs while sealing through the overflowed materials, and can also utilize the overflowed materials to protect important parts in the mold, such as a sliding block, a guide pillar and the like, so as to prevent the waste materials from entering the precise parts to cause the damage of the mold.
In order to solve the technical problems, the invention provides a rubber injection mold containing a metal insert, which is used for carrying out injection molding on a rubber injection part formed by an annular metal insert and an annular rubber part tightly combined with the metal insert into a whole, wherein the mold comprises an upper mold and a lower mold, the upper mold is provided with an upper mold concave part for accommodating the metal insert and an upper mold rubber groove for forming the rubber part, and the lower mold is provided with a lower mold boss penetrating into a central hole of the metal insert, wherein a first rubber overflow groove and a second rubber overflow groove are respectively arranged in the upper mold concave part and are adjacent to the inner side and the outer side of the upper mold rubber groove.
Preferably, a boss glue groove aligned with the first glue overflow groove is formed in the lower die boss.
Preferably, the boss glue groove is buckled with the first glue overflow groove to form an annular groove with a solid cross section.
Preferably, a plurality of rubber fixing holes are formed in the bottom of the first glue overflow groove.
Preferably, the second glue overflow groove has a cross section with an opening smaller than the bottom thereof.
Preferably, the cross section of the second glue overflow groove is trapezoidal.
Preferably, overflow rubber located in the range of the boss rubber groove and the first overflow rubber groove is solidified into a first rubber ring.
Preferably, the first rubber ring is attached to the upper die.
Preferably, the overflow rubber located in the range of the second overflow groove is solidified into a second rubber ring.
Preferably, the second rubber ring is attached to the upper die.
The invention also provides a method for injection molding by using the die, which comprises the following steps:
step A: the metal insert is arranged in the die for die assembly and injection molding;
and (B) step (B): deliberately overflowing the rubber injected in the upper die rubber groove into the first rubber overflow groove and the second rubber overflow groove, and reserving overflow rubber reserved in the range of the first rubber overflow groove and the second rubber overflow groove after demolding;
step C: and taking overflow rubber remained in the range of the first overflow groove and the second overflow groove as a sealing ring, and carrying out normal injection molding on the part.
Preferably, the step B further includes a step of trimming the spilled rubber after demolding, and the spilled rubber is trimmed to retain only the spilled rubber remaining in the first spilled rubber groove and the second spilled rubber groove.
According to the die, the first glue overflow groove and the second glue overflow groove which are close to the inner side and the outer side of the upper die glue groove are arranged, and the sealing ring can be formed around the inner side and the outer side which are close to the upper die glue groove by utilizing the glue overflow phenomenon, so that the thickness of the metal insert is larger than or smaller than the design size, and the size of the metal insert can be automatically adjusted due to the existence of the sealing ring, so that glue overflow is completely eradicated. That is, the uniquely designed mold and injection molding method of the present invention, by reverse thinking, uses overflowed scrap for sealing and automatic sizing, reduces scrap and flash, and also protects important parts in the mold, such as slides, guide posts, etc., from entering the precision parts to cause mold damage.
Drawings
The following drawings are only for purposes of illustration and explanation of the present invention and are not intended to limit the scope of the invention. Wherein,
FIG. 1 is a schematic perspective view of a rubber injection molded part containing a metal insert;
FIG. 2 is a cross-sectional view of the part shown in FIG. 1;
FIG. 3 is an exploded view of a mold injection of the conventional process for manufacturing a rubber injection molded part containing a metal insert of FIGS. 1-2;
FIG. 4 is a schematic diagram showing the mold closing and injection state of FIG. 3;
FIG. 5 shows an exploded view of a mold injection of a rubber injection molded part containing a metal insert according to one embodiment of the present invention;
FIG. 6 is a schematic diagram showing the mold closing and injection state of FIG. 5;
FIG. 7 is an exploded perspective view of the mold of FIG. 5;
FIG. 8 is a schematic perspective view showing the structure of a rubber after curing, which overflows in the direction of the first overflow launder, according to an embodiment of the present invention;
FIG. 9 is a schematic perspective view showing a structure after the rubber overflowed to the direction of the second overflow tank is solidified according to another embodiment of the present invention.
Detailed Description
For a clearer understanding of technical features, objects, and effects of the present invention, a specific embodiment of the present invention will be described with reference to the accompanying drawings. Wherein like parts are designated by like reference numerals.
In view of the background, similar to the process shown in fig. 1-2, when a rubber injection molding part containing a metal insert is injection molded by a common processing technology, due to the defect of glue overflow caused by different thicknesses of the metal insert, the flash has to be removed after demolding, the process is increased, the efficiency is reduced, and the problem of glue overflow waste is solved. FIG. 5 is a schematic diagram showing the mold injection decomposition of a rubber injection molded part with a metal insert according to one embodiment of the present invention; FIG. 6 is a schematic diagram showing the mold closing and injection state of FIG. 5; fig. 7 is an exploded perspective view of the mold injection of fig. 5. The cross-sectional lines of the upper and lower dies of fig. 5 and 6 are removed for clarity of illustration to reduce excessive line interference understanding, but the cross-sectional state of the upper and lower dies of fig. 5 and 6 may be understood by those skilled in the art with reference to the cross-sectional state of fig. 3 and 4.
Referring to fig. 5-7, the present invention is also directed to a metal insert-containing rubber injection mold that is particularly useful for injection molding a metal insert-containing rubber injection part similar to that shown in fig. 1-2, although those skilled in the art will appreciate that other similar metal insert-containing rubber injection parts, consistent with the injection molding principles of the present invention described below, are also suitable for use in the mold and injection molding method of the present invention.
In particular, the mold of the present invention can be used for injection molding a rubber injection molding part 1 composed of an annular metal insert 11 and an annular rubber portion 12 tightly integrated with the metal insert 11, wherein the mold according to one embodiment of the present invention includes an upper mold 3 and a lower mold 4, the upper mold 3 having an upper mold recess 31 accommodating the metal insert 11 and an upper mold rubber groove 32 forming the rubber portion 12, and the lower mold 4 having a lower mold boss 43 penetrating into a center hole 13 of the metal insert 11, unlike the conventional injection mold, in the embodiment of the present invention, in the upper mold recess 31, immediately inside and outside the upper mold rubber groove 32, a first rubber overflow groove 34 and a second rubber overflow groove 35 are provided, respectively.
Of course, it should be understood by those skilled in the art that the metal insert 11 of the present invention may be annular as shown in fig. 1-2, or may be annular in other shapes, for example, the metal insert 11 may be annular in square or other shaped structures, so long as the annular members having the first flash groove 34 and the second flash groove 35 may be used in the present invention.
In another embodiment, a boss glue groove 44 aligned with the first glue overflow groove 34 may be further provided on the lower die boss 43.
Further, the boss glue groove 44 and the first glue overflow groove 34 may be buckled to form an annular groove with a solid cross section. In addition, it is also preferable to provide a plurality of rubber fixing holes 341 at the bottom of the first glue overflow groove 34, and in the specific embodiment shown in fig. 7, four rubber fixing holes 341 are provided at equal intervals at the bottom of the first glue overflow groove 34.
In yet another embodiment, the second glue groove 35 has a cross section with an opening smaller than its bottom. More specifically, the cross section of the second glue overflow groove 35 may be a trapezoid, the short side portion of the trapezoid is the opening of the second glue overflow groove 35, and the long side portion of the trapezoid is the bottom of the second glue overflow groove 35.
The working principle of the mould and the injection method of the present invention are further described below with reference to fig. 5-7. As shown in fig. 5 to 7, the most fundamental difference between the mold of the present invention and the prior art is that in the upper mold concave portion 31 of the mold of the present invention, a first flash groove 34 and a second flash groove 35 are provided immediately inside and outside the upper mold glue groove 32, respectively.
When the mold of the present invention is injection-molded, it is assumed that a flash phenomenon (a flash phenomenon is almost unavoidable due to a problem of manufacturing tolerance, and more or less always occurs), for example, it is assumed that the flash is due to the fact that the thickness of the metal insert 11 is greater than the design thickness, and rubber overflows toward the center hole 13 of the metal insert 11. At this time, since the present invention is provided with the first flash groove 34 at the inner side immediately adjacent to the upper mold glue groove 32, the rubber overflowing from the upper mold glue groove 32 to the middle is directly filled in the first flash groove 34. Of course, in the case where the boss rubber groove 44 provided in alignment with the first overflow groove 34 is further provided on the lower die boss 43, the rubber overflowing from the upper die rubber groove 32 to the middle is also directly filled in the boss rubber groove 44. Since the boss glue groove 44 and the first glue overflow groove 34 are aligned, the area where both are folded together will be filled with overflow rubber. Further, in the case where a plurality of rubber fixing holes 341 are provided at the bottom of the first overflow groove 34, the inside of these rubber fixing holes 341 is also filled with overflow rubber. The shape of the overflow rubber filled in the boss rubber groove 44 and the first overflow rubber groove 34 and the rubber fixing hole 341 after curing can be visually shown in fig. 8, which shows a schematic perspective view of the rubber after curing in the direction of the first overflow groove according to an embodiment of the present invention, in which the overflow rubber located in the range of the boss rubber groove 44 and the first overflow rubber groove 34 is cured into the first rubber ring 54 having a circular cross section, and the overflow rubber located in the range of the rubber fixing hole 341 is cured into the column-shaped protrusion 541 connected with the first rubber ring 54 as a unitary structure. Of course, depending on the cross-sectional dimensions of the boss glue groove 44 and the first glue overflow groove 34, the cross-section of the overflow rubber after curing may be other shapes, such as trapezoidal, triangular, etc.
Or assuming that the flash is due to the metal insert 11 having a thickness less than the design thickness, the rubber overflows to the annular upper surface of the metal insert 11. At this time, since the second overflow groove 35 is provided at the outer side immediately adjacent to the upper mold groove 32 in the present invention, the rubber overflowing from the upper mold groove 32 to the outer side is directly filled in the second overflow groove 35. Further, when the cross section of the second overflow groove 35 is trapezoidal, the shape of the overflow rubber filled in the second overflow groove 35 after curing can be visually shown in fig. 9, which is a schematic view showing the solid structure of the rubber overflowing in the direction of the second overflow groove after curing according to another embodiment of the present invention, and in order to show the cross section shape thereof, fig. 9 is a broken view, and the overflow rubber located in the area of the second overflow groove 35 is cured into a second rubber ring 55 with a trapezoidal cross section.
Typically, flash is not useful and requires additional removal. The invention adopts a reverse thinking mode, the first glue overflow groove 34 and the second glue overflow groove 35 are deliberately arranged, and the first rubber ring 54 is deliberately formed at the inner side of the upper mould glue groove 32 through glue overflow during initial injection molding, and the second rubber ring 55 is formed at the outer side of the upper mould glue groove 32, so that a sealing structure is formed around the upper mould glue groove 32 through the first rubber ring 54 and the second rubber ring 55. When the initial injection molding is completed, since the first rubber ring 54 has the cylindrical protrusion 541 connected as a unitary structure, the cylindrical protrusion 541 is caught in the rubber fixing hole 341 to provide an external friction force, and thus the first rubber ring 54 is attached to the upper mold 3 at the time of the mold release. Similarly, since the second rubber ring 55 has a trapezoidal cross section, it is caught in the second overflow groove 35 having a small opening when demolding, and therefore the second rubber ring 55 is also attached to the upper die 3. The first rubber ring 54 and the second rubber ring 55 connected to the upper die 3 are not removed at this time, and remain on the upper die 3 for use as a sealing strip for the next injection molding.
When the new metal insert 11 is injected for the second time, after the mold is closed, the sealing rings are formed around the inner side and the outer side of the upper mold glue groove 32 due to the existence of the first rubber ring 54 and the second rubber ring 55, so that no matter the thickness of the metal insert 11 is larger than the design size or smaller than the design size, the automatic adjustment of the size of the metal insert can be formed due to the existence of the sealing rings, and the occurrence of glue overflow is completely stopped. That is, the uniquely designed mold and injection molding method of the present invention, by reverse thinking, uses overflowed scrap for sealing and automatic sizing, reduces scrap and flash, and also protects important parts in the mold, such as slides, guide posts, etc., from entering the precision parts to cause mold damage.
The following description of the specific examples further summarizes the metal insert-containing rubber injection molding process of the present invention as including the steps of:
step A: the metal insert 11 is set in a mold to perform mold closing injection molding.
And (B) step (B): the rubber injected in the upper die rubber groove 32 is deliberately overflowed into the first and second rubber overflow grooves 34 and 35, and overflowed rubber remained in the range of the first and second rubber overflow grooves 34 and 35 is remained after demoulding.
Step C: the part 1 is normally injection molded with the overflow rubber remaining in the range of the first overflow groove 34 and the second overflow groove 35 as a sealing ring.
The step B may further include a step of trimming the flash after demolding, where the flash trimming is performed to only retain the flash retained in the first flash groove 34 and the second flash groove 35, and trim and remove the remaining useless portions, so that flash will not occur during normal injection molding.
In addition, the step B is an initial step of injection molding, not a step of formal injection molding, and functions to form the aforementioned first rubber ring 54 and second rubber ring 55 by injection molding, which are used as subsequent seal rings. Since it is determined that the seal ring is formed, the flash phenomenon must occur in the initial injection molding step, for example, the metal insert 11 having a thin or thick size may be intentionally selected to be put into a mold for initial injection molding, or a gap may be intentionally formed between the upper mold 3 and the lower mold 4 by a spacer or the like at the time of initial injection molding, thereby intentionally causing flash. In order to avoid glue overflow, the prior art must not intentionally cause glue overflow as the invention, so the injection molding method of the invention is completely reverse thinking, is completely opposite to the thinking mode of the technicians in the field, and utilizes the phenomenon of the original unfavorable glue overflow to obtain the sealing ring, thus constructing the basis for avoiding glue overflow for the subsequent injection molding, being unobvious to the technicians in the field, having outstanding substantive characteristics and remarkable progress and creative.
In summary, the mold of the invention can form the sealing ring around the inner side and the outer side of the upper mold glue groove by using the glue overflow phenomenon through arranging the first glue overflow groove and the second glue overflow groove, so that no matter the thickness of the metal insert is larger than the design size or smaller than the design size, the automatic adjustment of the size of the metal insert can be formed due to the existence of the sealing ring, and the occurrence of glue overflow is completely stopped.
It should be understood by those skilled in the art that while the present invention has been described in terms of several embodiments, not every embodiment contains only one independent technical solution. The description is given for clearness of understanding only, and those skilled in the art will understand the description as a whole and will recognize that the technical solutions described in the various embodiments may be combined with one another to understand the scope of the present invention.
The foregoing is illustrative of the present invention and is not to be construed as limiting the scope of the invention. Any equivalent alterations, modifications and combinations thereof will be effected by those skilled in the art without departing from the spirit and principles of this invention, and it is intended to be within the scope of the invention.
Claims (7)
1. A rubber injection mould containing a metal insert for injection moulding a rubber injection part (1) consisting of an annular metal insert (11) and an annular rubber part (12) tightly integrated with the metal insert (11), the mould comprising an upper mould (3) and a lower mould (4), the upper mould (3) having an upper mould recess (31) for receiving the metal insert (11) and an upper mould glue groove (32) for forming the rubber part (12), the lower mould (4) having a lower mould boss (43) penetrating into a central hole (13) of the metal insert (11), characterized in that in the upper mould recess (31) for receiving the metal insert (11) a first glue groove (34) and a second glue overflow groove (35) are provided immediately inside and outside the upper mould glue groove (32), respectively; a boss glue groove (44) aligned to the first glue overflow groove (34) is formed in the lower die boss (43); overflow rubber positioned in the range of the boss rubber groove (44) and the first overflow rubber groove (34) is solidified into a first rubber ring (54); the first rubber ring (54) is connected to the upper die (3); the overflow rubber positioned in the range of the second overflow groove (35) is solidified into a second rubber ring (55); the second rubber ring (55) is connected to the upper die (3).
2. The rubber injection mold with metal insert as in claim 1, wherein the boss glue groove (44) snaps into the first glue overflow groove (34) to form an annular groove with a solid cross section.
3. The rubber injection mold with the metal insert according to claim 2, wherein a plurality of rubber fixing holes (341) are formed at the bottom of the first flash groove (34).
4. A rubber injection mould with metal inserts according to claim 3, characterized in that the second glue overflow channel (35) has a cross section with an opening smaller than its bottom.
5. The rubber injection mold with metal insert according to claim 4, wherein the cross section of the second flash groove (35) is trapezoidal.
6. A method of injection molding using the metal insert-containing rubber injection mold of any one of claims 1-5, comprising the steps of:
step A: the metal insert (11) is arranged in the die for die assembly and injection molding;
and (B) step (B): deliberately overflowing the rubber molded in the upper die rubber groove (32) into the first rubber overflowing groove (34) and the second rubber overflowing groove (35), and reserving overflowing rubber reserved in the range of the first rubber overflowing groove (34) and the second rubber overflowing groove (35) after demolding;
step C: and taking overflow rubber remained in the range of the first overflow groove (34) and the second overflow groove (35) as a sealing ring, and carrying out normal injection molding on the part (1).
7. The method of claim 6, wherein said step B further comprises the step of trimming the flash after demolding, the flash trimming retaining only the flash remaining in the area of said first flash (34) and second flash (35).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810454445.5A CN108544719B (en) | 2018-05-14 | 2018-05-14 | Rubber injection molding method and mold containing metal inserts |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810454445.5A CN108544719B (en) | 2018-05-14 | 2018-05-14 | Rubber injection molding method and mold containing metal inserts |
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| Publication Number | Publication Date |
|---|---|
| CN108544719A CN108544719A (en) | 2018-09-18 |
| CN108544719B true CN108544719B (en) | 2023-12-22 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111904665A (en) * | 2020-07-22 | 2020-11-10 | 四川大学 | Bone increment auxiliary system, design method and bone increment auxiliary device |
| CN113459417A (en) * | 2021-07-08 | 2021-10-01 | 袁志兵 | Production die for inner die and outer die of environment-friendly equipment |
| CN114670374B (en) * | 2022-04-08 | 2023-10-24 | 成都希瑞方晓科技有限公司 | Sealing rubber cap forming die |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006027092A (en) * | 2004-07-16 | 2006-02-02 | Imoto Seiki:Kk | Mold for molding rubber molded product without burr and requiring no finishing |
| JP2007022046A (en) * | 2005-07-21 | 2007-02-01 | Bridgestone Corp | Mold for o-ring |
| CN201922517U (en) * | 2010-12-13 | 2011-08-10 | 大庆电业局 | Processing die of sealing rubber cap for injector |
| CN202399476U (en) * | 2011-12-31 | 2012-08-29 | 厦门麦丰密封件有限公司 | Glue overflow preventing mold structure |
| CN203919572U (en) * | 2014-06-23 | 2014-11-05 | 襄阳国网合成绝缘子有限责任公司 | Elevated-temperature seal insulator injection molding mould |
| CN205522281U (en) * | 2016-02-07 | 2016-08-31 | 东莞捷讯橡胶有限公司 | Liquid silicone rubber injection molding burr -free mould |
| CN106827386A (en) * | 2017-03-27 | 2017-06-13 | 安徽理士电源技术有限公司 | Injection mold glue sealing structure |
| CN208197439U (en) * | 2018-05-14 | 2018-12-07 | 诺兰特移动通信配件（北京）有限公司 | A kind of rubber injection mold mold containing metal insert |
-
2018
- 2018-05-14 CN CN201810454445.5A patent/CN108544719B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006027092A (en) * | 2004-07-16 | 2006-02-02 | Imoto Seiki:Kk | Mold for molding rubber molded product without burr and requiring no finishing |
| JP2007022046A (en) * | 2005-07-21 | 2007-02-01 | Bridgestone Corp | Mold for o-ring |
| CN201922517U (en) * | 2010-12-13 | 2011-08-10 | 大庆电业局 | Processing die of sealing rubber cap for injector |
| CN202399476U (en) * | 2011-12-31 | 2012-08-29 | 厦门麦丰密封件有限公司 | Glue overflow preventing mold structure |
| CN203919572U (en) * | 2014-06-23 | 2014-11-05 | 襄阳国网合成绝缘子有限责任公司 | Elevated-temperature seal insulator injection molding mould |
| CN205522281U (en) * | 2016-02-07 | 2016-08-31 | 东莞捷讯橡胶有限公司 | Liquid silicone rubber injection molding burr -free mould |
| CN106827386A (en) * | 2017-03-27 | 2017-06-13 | 安徽理士电源技术有限公司 | Injection mold glue sealing structure |
| CN208197439U (en) * | 2018-05-14 | 2018-12-07 | 诺兰特移动通信配件（北京）有限公司 | A kind of rubber injection mold mold containing metal insert |
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| CN108544719A (en) | 2018-09-18 |
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