CN108582665B - Forming die of injection molding with inserts - Google Patents

Forming die of injection molding with inserts Download PDF

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Publication number
CN108582665B
CN108582665B CN201810374625.2A CN201810374625A CN108582665B CN 108582665 B CN108582665 B CN 108582665B CN 201810374625 A CN201810374625 A CN 201810374625A CN 108582665 B CN108582665 B CN 108582665B
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Prior art keywords
insert
template
injection
mold
molding
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CN201810374625.2A
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CN108582665A (en
Inventor
郭怀肖
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Goertek Inc
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Goertek Inc
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    • 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
    • B29C45/2602—Mould construction elements
    • 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
    • B29C45/14065—Positioning or centering articles in the mould

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

The invention discloses a forming die of an injection molding part with an insert, which comprises a first template, a second template and a third template, wherein the first template is detachably connected with the second template, and the second template is connected with the third template in a sliding fit manner; the first template is provided with a first forming part; the second template is provided with a second forming part and an insert hole, the second forming part corresponds to the first forming part to form an injection molding cavity, and the insert hole corresponds to the injection molding cavity; the third template is provided with an ejector rod, and the ejector rod corresponds to the insert hole. Through the cooperation between first template, second template and the third template, need not realize the shaping of the working of plastics that has the inserts with the help of external supplementary charging equipment, the injection moulding cycle is short, does not have the problem that the inserts drops in addition among the injection moulding process.

Description

Forming die of injection molding with inserts
Technical Field
The invention relates to the field of injection molding, in particular to a molding die of an injection molding part with an insert.
Background
The molding of the injection molding with the insert is a molding method in which a dissimilar insert is pre-installed in a mold and then resin is injected, so that the molten resin material is bonded and solidified with the insert to form the injection molding. With the wide demand of injection molding parts, people also put higher and higher requirements on the molding of the injection molding parts with the inserts. In particular, in order to meet the requirements of assembling electronic components and the like, parts of many components are injection-molded parts, and inserts such as metal nuts and the like are arranged on the parts.
The existing injection molding part with the insert is formed by loading the insert into a mold through auxiliary feeding equipment such as manpower or a mechanical arm, the injection molding part forming process with the insert needs to be implemented by means of external auxiliary feeding equipment, the injection molding period is long, and the insert is easy to fall off in the injection molding process to cause the problem of compression molding.
Therefore, how to provide a simple and quick forming die for an injection molding part with an insert, which can effectively prevent the insert sizing material from crushing the die, becomes a technical problem to be solved urgently in the field.
Disclosure of Invention
The invention aims to provide a new technical scheme of a forming mould of an injection molding part with an insert, which is simple, convenient and quick and can effectively prevent the mould from being crushed by insert rubber.
According to a first aspect of the invention, a molding die for injection molded parts with an insert is provided.
The forming die for the injection molding part with the insert comprises a first template, a second template and a third template, wherein the first template is detachably connected with the second template, and the second template is connected with the third template in a sliding fit manner; wherein the content of the first and second substances,
the first template is provided with a first forming part;
the second template is provided with a second forming part and an insert hole, the second forming part corresponds to the first forming part to form an injection molding cavity, the insert hole is used for pre-positioning an insert, and the insert hole corresponds to the injection molding cavity;
and the third template is provided with an ejector rod, the ejector rod corresponds to the insert hole, so that the ejector rod ejects the insert in the insert hole and positions the insert in the injection molding cavity when the mold is closed.
Optionally, be equipped with the switch tank on the first template, be equipped with the switch on the second template, the switch with the switch tank cooperatees.
Optionally, a second template limiting rod is arranged on the third template, and the second template is in sliding fit with the second template limiting rod;
and the second template limiting rod is provided with a limiting part for limiting the moving position of the second template.
Optionally, the first template is further provided with an accommodating groove for accommodating a part of the second template limiting rod.
Optionally, an injection molding channel is arranged in the molding die of the injection molding part with the insert, the injection molding channel penetrates through the second template and the third template, and the injection molding channel is communicated with the injection molding cavity.
Optionally, the ejector rod is a sliding fit with the insert bore.
Optionally, the molding die for the injection-molded part with the insert further comprises an insert box, wherein the insert box is provided with an insert cavity for accommodating a plurality of inserts and an insert outlet for leading out the inserts in the insert cavity;
the second template is provided with an insert box positioning groove used for positioning the insert box on the second template, and the insert outlet corresponds to the insert hole.
Optionally, an insert box positioning hole is formed in the insert box, and a positioning pin matched with the insert box positioning hole is formed in the second template.
Optionally, an insert output mechanism for outputting the insert in the insert box to the insert hole is further disposed in the second mold plate.
Optionally, the insert output mechanism is a suction mechanism configured to suck the insert in the insert box out of the insert outlet into the insert hole.
According to an embodiment of the disclosure, the forming die of the injection molding part with the insert can realize the forming of the plastic part with the insert without an external auxiliary feeding device through the matching among the first template, the second template and the third template, the injection molding period is short, and the problem that the insert falls off does not exist in the injection molding process.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic view of a mold for molding an injection-molded part according to an embodiment of the present invention before clamping.
Fig. 2 is a schematic view of a mold for molding an injection-molded part with an insert according to an embodiment of the present invention after mold clamping.
Fig. 3 is a schematic structural view of a second mold plate and an insert of the molding die of the injection molded part with the insert according to the embodiment of the invention.
The figures are labeled as follows:
the device comprises a first template-1, a first forming part-11, a containing groove-12, a second template-2, a second forming part-21, an insert hole-22, a shutter-23, an insert output mechanism-24, a third template-3, an ejector rod-31, a second template limiting rod-32, an injection molding cavity-4, an injection molding channel-5, an insert box-6, an insert cavity-61, an insert box positioning hole-62 and an insert-7.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
The invention provides a forming die of an injection molding part with an insert, and aims to solve the problems that the injection molding cycle is long and the insert is easy to fall off in the injection molding process to cause a pressing die.
As shown in fig. 1 to 3, the mold for molding an injection-molded article with an insert includes a first mold plate 1, a second mold plate 2, and a third mold plate 3. The first form 1 and the second form 2 are detachably coupled so that the first form 1 and the second form 2 can be separated from each other as relatively independent parts. The detachable connection between the first template 1 and the second template 2 may be realized by means of a bolted connection or a shutter connection or the like. The second template 2 and the third template 3 are connected in a sliding fit, so that the relative position between the second template 2 and the third template 3 can be changed. The connection between the second template 2 and the third template 3 can be realized by the matching of rods and holes or the sliding way and the like.
The first template 1 is provided with a first forming part 11. The second template 2 is provided with a second molding portion 21 and an insert hole 22. The second molding portion 21 and the first molding portion 22 correspond to constitute the injection molding cavity 4. For the technical skill in the art, the first molding part 11 and the second molding part 21 may be referred to as a cavity or an insert in the mold field, and the injection-molded part may be molded in the injection-molding cavity 4 formed by the first molding part 11 and the second molding part 21.
An insert hole 22 is provided for prepositioning the insert 7, and the insert hole 22 corresponds to the injection molding cavity 4. The insert 7 may be moved from outside the insert hole 22 into the insert hole 22 by means of ejection, suction, or the like. The insert 7 may be a clearance fit or a sliding fit with the insert bore 22 to ensure free movement of the insert 7 within the insert bore 22.
The third mold plate 3 is provided with an ejector rod 31, and the ejector rod 31 corresponds to the insert hole 22, so that the ejector rod 31 ejects and positions the insert 7 in the insert hole 22 in the injection molding cavity 4 during mold closing. The ejector rod 31 may be a sliding fit or a clearance fit with the insert bore 22. As shown in fig. 1, before mold clamping, the ejector rod 31 is not in contact with the insert in the insert hole 22; as shown in fig. 2, after the mold is closed, the ejector rod 31 ejects the insert 7 in the insert hole 22 into the injection molding cavity 4, and positions the insert 7 in the injection molding cavity 4.
When the forming die is used, the second die plate 2 is separated from the third die plate 3, the insert 7 can be moved into the insert hole 22 in the second die plate 2, and the ejector rod 31 on the third die plate 3 is not contacted with the insert 7 in the insert hole 22. And then the first template 1 and the second template 2 which are connected together are driven to move towards the third template 3, when the ejector rod 31 of the second template 2 which is moved to the third template 3 is contacted with the insert 7 in the insert hole 22, the insert 7 in the insert hole 22 moves towards the direction far away from the third template 3 under the action of the ejector rod 31, namely, the insert 7 moves towards the injection molding cavity 4 which is jointly formed by the first template 1 and the second template 2. When the first template 1 and the second template 2 which are connected together move to the position of being matched with the third template 3, the ejector rod 31 positions the insert 7 in the injection molding cavity 4, and at the moment, plastic materials can be injected into the injection molding cavity 4, so that the molding of the injection molding part with the insert is realized. After the injection-molded part is molded, the first mold plate 1 and the second mold plate 2 are separated to take out the injection-molded part in the injection-molding cavity 4 (between the first molding portion 11 and the second molding portion 21).
The forming die of the injection molding piece with the inserts can realize the forming of the plastic piece with the inserts without using external auxiliary feeding equipment through the matching among the first template 1, the second template 2 and the third template 3, and the injection molding period is short. And the insert 7 can be positioned in the injection molding cavity 4 by the ejector rod 31, and the problem that the insert 7 falls off does not exist in the injection molding process.
Optionally, a shutter slot is provided on the first template 1, and a shutter 23 is provided on the second template 2, and the shutter 23 is matched with the shutter slot. In this way, the first template 1 and the second template 2 can be detachably connected by the shutter 23. The mode that realizes dismantling the connection through the shutter is with low costs, easy dismounting.
Optionally, a second form limiting rod 32 is disposed on the third form 3, and the second form 2 is in sliding fit with the second form limiting rod 32. The second pattern plate stopper rod 32 is provided with a stopper portion for restricting the movement position of the second pattern plate 2. The limiting part can be realized through a nut or a circumferential bulge and the like. The provision of the second form-defining stop 32 is advantageous in avoiding complete separation of the second form 2 from the third form 3.
Further, the first mold plate 1 is further provided with a receiving groove 12 for receiving a portion of the second mold plate stopper rod 32, so as to reduce the volume of the molding die.
Optionally, an injection channel 5 is provided in the mold for the injection molded part with the insert. The injection molding channel 5 penetrates through the second template 2 and the third template 3, and the injection molding channel 5 is communicated with the injection molding cavity 4. The injection channel 5 is arranged in the second template 2 and the third template 3, which is beneficial to reducing the volume of the forming mold.
Optionally, the ejector rod 31 is a sliding fit with the insert hole 22.
Optionally, the mold for molding injection-molded parts with inserts also comprises an insert pocket 6. The insert box 6 has an insert chamber 61 for accommodating a plurality of inserts 7 and an insert outlet (not shown in the figure) for leading out the inserts 7 in the insert chamber 61. The number of insert boxes 6 can be set according to the actual requirements, for example, the number of insert boxes 6 is the same as the number of inserts 7 on the injection-molded part. In general, the insert case 6 may have a case body and a lid, and the insert 7 may be inserted into the insert case 6 by opening and closing the lid. During specific implementation, the depth of the box body can be slightly larger than the height of the insert 7 so as to ensure that the insert 7 can be placed in the insert box 6 accurately. Taking the insert 7 as a nut for example, the depth of the box body can be 0.2mm greater than the height of the nut.
The second template 2 is provided with an insert box positioning groove for positioning the insert box 6 on the second template 2, and the insert outlet corresponds to the insert hole 22. The insert box 6 can be inserted into the insert box positioning groove. In addition, the insert box 6 can be fixed in the insert box positioning groove in an interference fit manner, or fixed in the insert box positioning groove through a positioning pin. The insert outlet corresponds to the insert hole 22 in the second template 2 so that the insert 7 in the insert pocket 6 is transferred more easily from the insert pocket 6 into the insert hole 22.
Further, the insert box 6 is provided with an insert box positioning hole 62, and the second mold plate 2 is provided with a positioning pin (not shown) matching with the insert box positioning hole 62.
Further, an insert output mechanism 24 for outputting the insert 7 in the insert box 6 to the insert hole 22 is further provided in the second die plate 2. The insert output mechanism 24 may be, for example, an ejection mechanism or an air suction mechanism, etc. By the insert output mechanism 24, the insert 7 can be continuously supplied from the insert cassette 6 into the insert hole 22, thereby improving the efficiency of the molding die.
Further, the insert output mechanism 24 is a suction mechanism. The suction mechanism is provided for sucking the insert 7 in the insert pocket 6 out of the insert outlet into the insert bore 22. In specific implementation, an air path for air circulation may be provided in the second mold plate 2, and the insert 7 is sucked out from the insert box 6 into the insert hole 22 by the suction of the suction mechanism.
Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims (9)

1. The forming die for the injection molding part with the insert is characterized by comprising a first template, a second template and a third template, wherein the first template is detachably connected with the second template, and the second template is connected with the third template in a sliding fit manner; wherein the content of the first and second substances,
the first template is provided with a first forming part;
the second template is provided with a second forming part and an insert hole, the second forming part corresponds to the first forming part to form an injection molding cavity, the insert hole is used for pre-positioning an insert, and the insert hole corresponds to the injection molding cavity;
a second template limiting rod is arranged on the third template, and the second template is in sliding fit with the second template limiting rod;
the second template limiting rod is provided with a limiting part for limiting the moving position of the second template;
and the third template is provided with an ejector rod, the ejector rod corresponds to the insert hole, so that the ejector rod ejects the insert in the insert hole and positions the insert in the injection molding cavity when the mold is closed.
2. The mold for molding injection molded parts with insert according to claim 1, characterized in that said first mold plate is provided with a shutter groove and said second mold plate is provided with a shutter, said shutter cooperating with said shutter groove.
3. The mold of claim 1, wherein the first platen further comprises a receiving groove for receiving a portion of the stop rod of the second platen.
4. The mold for molding an injection molded part with an insert as claimed in claim 1, wherein an injection channel is provided in the mold for molding an injection molded part with an insert, the injection channel penetrates through the second mold plate and the third mold plate, and the injection channel is communicated with the injection molding cavity.
5. The mold for molding an injection molded part with an insert as claimed in claim 1, wherein said ejector rod is in sliding fit with said insert bore.
6. The molding die for an injection-molded part with an insert according to any one of claims 1 to 5, further comprising an insert case having an insert cavity for accommodating a plurality of inserts and an insert outlet for leading out the inserts in the insert cavity;
the second template is provided with an insert box positioning groove used for positioning the insert box on the second template, and the insert outlet corresponds to the insert hole.
7. The mold for molding an injection-molded part with an insert according to claim 6, wherein the insert case is provided with insert case positioning holes, and the second mold plate is provided with positioning pins to be fitted to the insert case positioning holes.
8. The mold for molding an injection-molded part with an insert according to claim 6, wherein an insert output mechanism for outputting the insert in the insert case to the insert hole is further provided in the second mold plate.
9. The molding die for injection molded parts with an insert as set forth in claim 8, wherein said insert output mechanism is a suction mechanism configured to draw the insert from said insert outlet into said insert bore within said insert pocket.
CN201810374625.2A 2018-04-24 2018-04-24 Forming die of injection molding with inserts Active CN108582665B (en)

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Application Number Priority Date Filing Date Title
CN201810374625.2A CN108582665B (en) 2018-04-24 2018-04-24 Forming die of injection molding with inserts

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CN108582665B true CN108582665B (en) 2020-03-17

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Publication number Priority date Publication date Assignee Title
CN109571870B (en) * 2018-10-25 2020-05-29 歌尔股份有限公司 Injection molding mold and injection molding method

Citations (5)

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Publication number Priority date Publication date Assignee Title
CN101367260A (en) * 2007-08-14 2009-02-18 上海皓月电气有限公司 Process for manufacturing plastic products with insert
CN202037795U (en) * 2011-01-18 2011-11-16 宁波贝隆精密模塑有限公司 Automatic insert filling device for injection mold
CN104441486A (en) * 2014-12-12 2015-03-25 重庆瑞霆塑胶有限公司 Plastic injection mold with insert
CN105751425A (en) * 2014-12-19 2016-07-13 上海英济电子塑胶有限公司 Mini-type iron piece automatic buried molding mechanism and molding method thereof
CN206633311U (en) * 2017-03-15 2017-11-14 合兴集团有限公司 A kind of plastic mould device for assembly part

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5336227B2 (en) * 2009-02-25 2013-11-06 アスモ株式会社 Manufacturing method of injection molded product and injection molding apparatus
JP2010221587A (en) * 2009-03-24 2010-10-07 Nissha Printing Co Ltd Resin molded article equipped with insert material, and die used for manufacturing the same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101367260A (en) * 2007-08-14 2009-02-18 上海皓月电气有限公司 Process for manufacturing plastic products with insert
CN202037795U (en) * 2011-01-18 2011-11-16 宁波贝隆精密模塑有限公司 Automatic insert filling device for injection mold
CN104441486A (en) * 2014-12-12 2015-03-25 重庆瑞霆塑胶有限公司 Plastic injection mold with insert
CN105751425A (en) * 2014-12-19 2016-07-13 上海英济电子塑胶有限公司 Mini-type iron piece automatic buried molding mechanism and molding method thereof
CN206633311U (en) * 2017-03-15 2017-11-14 合兴集团有限公司 A kind of plastic mould device for assembly part

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