CN110281468A - A kind of injection mold with flash block - Google Patents
A kind of injection mold with flash block Download PDFInfo
- Publication number
- CN110281468A CN110281468A CN201910331607.0A CN201910331607A CN110281468A CN 110281468 A CN110281468 A CN 110281468A CN 201910331607 A CN201910331607 A CN 201910331607A CN 110281468 A CN110281468 A CN 110281468A
- Authority
- CN
- China
- Prior art keywords
- boss
- flash block
- injection
- intercommunicating pore
- wrapping strip
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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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
- B29C45/14—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
- B29C45/14336—Coating a portion of the article, e.g. the edge of the article
- B29C45/14377—Coating a portion of the article, e.g. the edge of the article using an additional insert, e.g. a fastening element
-
- 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
- B29C45/14336—Coating a portion of the article, e.g. the edge of the article
- B29C45/14434—Coating brittle material, e.g. glass
-
- 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
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
- B29L2031/3052—Windscreens
Landscapes
- 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 present invention relates to injection mold technologies, especially a kind of injection mold with flash block, including the upper die and lower die being used cooperatively, the cavity body of mould for accommodating glass is formed after upper die and lower die molding, cavity body of mould includes the injection die cavities being arranged around the periphery of glass, so that injection molding stream flows along injection die cavities and molds wrapping strip in the perimeter injection moulding of glass, it is characterized by: the upper surface of wrapping strip is equipped with boss, boss is along the circumferentially distributed of glass, flash block is coated on the boss of the stream end of injection die cavities, flash block is removably mounted on the lower section of upper mold, storage glue groove is equipped in flash block, first intercommunicating pore of connection storage glue groove and the upper surface for the boss being coated in flash block, it is connected to storage glue groove and the second intercommunicating pore of the medial surface of wrapping strip and the lateral surface for being connected to storage glue groove and wrapping strip Third connecting hole.Advantage is: the appearance of the complicated bound edge product of injection molding is more complete and beautiful, improves the yield rate of product.
Description
Technical field:
The present invention relates to injection mold technology, especially a kind of injection mold with flash block.
Background technique:
Currently, the entrucking of glass for vehicle window hemming assembly positions, it is accurately fixed mainly by the post of glass for vehicle window product behind
Position is to the corresponding junction of vehicle body and keeps lasting reliability.The prior art generallys use insert injection moulding mode and is fixed to post
On glass for vehicle window, i.e., in plastic injection glass wrapping strip, post is coated in the form of inserts in the wrapping strip of glass for vehicle window.The party
The adhesion strength of formula is high, and production is common post fixed form quickly.
During existing glass and the integrated injection molding of post, glass and post are usually separately fixed at mold
In, then injection-molding edge material forms together between glass and post.Wherein, the mold includes the upper mold being used cooperatively
And lower die, the cavity body of mould for accommodating glass and attachment is formed after upper die and lower die molding, and form for PU moulding material
The injection die cavities of wrapping strip out.Before PU injection molding, glass is first put into lower die, glass outer profile substantially with lower die external mould frame
Alignment, locating piece stretch out the final position for calibrating glass, and sucker positioning mechanism is sucked glass, prevents in injection molding process
Glass displacement；Then upper die and lower die are molded, the external mould frame pressed glass of upper and lower mould, to prevent glass displacement, is slided if any design
Block, upper ejector pin passes through the hole of sliding block when molding, and since upper ejector pin has tilt angle, between upper and lower mould, distance is more next
Closer, sliding block is gradually drawn close to framed under the traction of upper ejector pin, and splicing is in framed interior composition mold cavity after final molding
A part.
Above-mentioned large size PU injection mold in injection molding process because of the stream too long in flow in mold cavity, in stream
End solidifies since the isocyanates and polyalcohol of PU two-component have occurred and that chemical reaction, and subsequent stream can not continue along material
Stream direction is gone ahead, and is caused the bound edge product for being molded by generate bound edge in stream end and is lacked the discontented defect of material, note, causes to give up
Product influence finished product rate.If increasing PU injection volume, for stream end, there are the packets of the complex profiles structure such as post boss
Side product can not also solve the problems, such as that thorough bound edge lacks material, instead increasing the overlap amount of bound edge product border, increase rear road work
The deburring workload of sequence.
Summary of the invention:
The technical problem to be solved by the present invention is to provide one kind for above-mentioned technical problem existing for existing injection mold
The injection mold with flash block of injection-molded finished performance stabilization, good appearance.
The technical scheme adopted by the invention to solve the technical problem is that: a kind of injection mold with flash block, including
The upper die and lower die being used cooperatively form the cavity body of mould for accommodating glass, the mold after the upper die and lower die molding
Cavity include around the glass periphery be arranged injection die cavities so that injection molding stream flowed along the injection die cavities and
The perimeter injection moulding of the glass molds wrapping strip, it is characterised in that: the upper surface of the wrapping strip is equipped with boss, the boss
Along the circumferentially distributed of the glass, flash block is coated on the boss of the stream end of the injection die cavities, it is described
Flash block is removably mounted on the lower section of the upper mold, and storage glue groove, the connection storage glue groove and packet are equipped in the flash block
Overlay on the first intercommunicating pore of the upper surface of the boss in the flash block, the medial surface of the connection storage glue groove and the wrapping strip
The second intercommunicating pore and the connection storage glue groove and the wrapping strip lateral surface third connecting hole.
Further, first intercommunicating pore is located at the inside of the flash block, and second intercommunicating pore is located at described overflow
Expect the inner sidewall of block, the third connecting hole is located at the lateral wall of the flash block.
Further, the inner sidewall of the flash block is concordant with the medial surface of the wrapping strip, the outside of the flash block
Wall is concordant with the lateral surface of the wrapping strip.
Further, the spacing between two neighboring boss is 190mm~210mm.
Further, first intercommunicating pore is single hole, and second intercommunicating pore is to arrange along the medial surface of wrapping strip
At least two first apertures, the sum of sectional area of first aperture is less than the sectional area of first intercommunicating pore, described the
Tee joint hole is at least two second orifices arranged along the lateral surface of wrapping strip, and the sum of sectional area of the second orifice is small
In the sectional area of first intercommunicating pore.
Further, the sectional area of first intercommunicating pore is 25~30mm2, the sum of the sectional area of second intercommunicating pore
For 9~12mm2, the sum of the sectional area in the third connecting hole is 9~12mm2。
Further, the section of first intercommunicating pore is strip, section of second intercommunicating pore and third connecting hole
Face is circle.
Further, the difference in height being coated between the upper surface of boss and the bottom surface of boss in the flash block is 10
~15mm.
Further, the spacing between the medial surface of the wrapping strip and the lateral surface of wrapping strip is 55~65mm, cladding
The spacing of the lateral surface of the medial surface and boss of boss in the flash block is 16~20mm.
Further, the upper surface of the boss is equipped with mold insert, and post is inlaid in the mold insert, and the post passes through one
It is coated and fixed after body injection molding on the boss.
The present invention has the following beneficial effects: the glass for being able to solve complex profile due to taking above-mentioned technical proposal
The glass hemming assembly defect discontented in the scarce material of bound edge, note that stream end generates, so that the appearance of bound edge product is more complete and beautiful
It sees, improves the yield rate of product.
Detailed description of the invention:
Fig. 1 is a kind of structural schematic diagram of the injection mold with flash block of the present invention after omitting upper mold；
Fig. 2 is the structural schematic diagram of the glass hemming assembly in Fig. 1；
Fig. 3 is the enlarged diagram of the flash block in Fig. 1；
Fig. 4 is the part A enlarged diagram in Fig. 2；
Numbering in the drawing explanation: 1 is lower die, and 2 be glass, and 3 be wrapping strip, and 31 be the medial surface of wrapping strip, and 32 be bound edge
The lateral surface of item, 33 be boss, and 331 be the upper surface of boss, and 332 be the bottom surface of boss, and 333 be the medial surface of boss, and 334 are
The lateral surface of boss, 4 be flash block, and 41 be the inner sidewall of flash block, and 42 be the lateral wall of flash block, and 43 be storage glue groove, and 44 are
First intercommunicating pore, 45 be the second intercommunicating pore, and 5 be mold insert, and 6 be post.
Specific embodiment:
Below in conjunction with attached drawing, the content of the present invention will be further explained.
As shown in figures 1-4, a kind of injection mold with flash block of the present invention, including the upper mold being used cooperatively
With lower die 1, the upper die and lower die 1 form the cavity body of mould for accommodating glass 2 after molding, the cavity body of mould includes surrounding
The injection die cavities of the periphery setting of the glass 2, so that injection molding stream is flowed along the injection die cavities and in the glass 2
Perimeter injection moulding molds wrapping strip 3, it is characterised in that: the upper surface of the wrapping strip 3 be equipped with boss 33, the boss 33 along
The glass 2 it is circumferentially distributed, flash block 4 is coated on the boss 33 of the stream end of the injection die cavities, it is described
Flash block 4 is removably mounted on the lower section of the upper mold, and storage glue groove 43, the connection storage glue groove are equipped in the flash block 4
43 with the first intercommunicating pore 44 of the upper surface 331 for the boss 33 being coated in the flash block 4, be connected to the storage glue groove 43 and institute
It states the second intercommunicating pore 45 of the medial surface 31 of wrapping strip 3 and is connected to the storage glue groove 43 and the lateral surface 32 of the wrapping strip 3
Third connecting hole.
In the present invention, it is provided with boss 33 every a distance in the circumferential direction of wrapping strip 3, the boss 33 is for installing
Attachment, type face are complex.And since 33 quantity of boss is more, there will necessarily be one near stream end
Boss 33, cause to be molded stream at this near there are lacking the open defects such as material, note be discontented, especially in the upper surface of boss 33
And it will appear apparent open defect at wrapping strip 3 medial surface 31 and lateral surface 32 that contact with upper mold.The present invention is by setting
The flash block 4 for offering storage glue groove 43 is set, then storage glue groove 43 is lacked into material region with these and is connected, guidance stream fills these areas
Domain, to eliminate its open defect.
In the present invention, the flash block 4 is to be detachably connected with upper mold, and it is extra in removal flash block 4 to facilitate after die sinking
Flash.The flash block 4 can be linked together by guide post and upper mould ejector retainner plate, for the movement of flash block,
Allow to the open mold with mold and opens and closes.The flash block is return back in model cavity in injection moulding process, when injection molding PU stream
When flowing to type chamber end, a part of PU stream end will be located at by the first intercommunicating pore, the second intercommunicating pore and third connecting hole
The PU feed stream of bound edge upper surface and bound edge side surface guides, and is stored in storage glue groove, so that subsequent stream can continue to
It goes ahead along stream direction, stream is made to fill full entire injection die cavities, after the PU stream in injection die cavities reacts solidification completely,
PU bound edge and glass have just been grouped together into intact glass hemming assembly product.
Further, first intercommunicating pore 44 is located at the inside of the flash block 4, and second intercommunicating pore 45 is located at institute
The inner sidewall 41 of flash block 4 is stated, the third connecting hole is located at the lateral wall 42 of the flash block 4.The inside of the flash block 4
Wall 41 is concordant with the medial surface 31 of the wrapping strip 3, the lateral surface 32 of the lateral wall 42 of the flash block 4 and the wrapping strip 3
Concordantly.By taking above-mentioned technical proposal, so that the second intercommunicating pore 45 is connected with the top edge of the medial surface of wrapping strip 3, the
Tee joint hole is connected with the top edge of the lateral surface of wrapping strip 3, and flash removal is convenient.
Further, to meet positioning requirements, in upper surface (the i.e. interior table of the direction of glass hemming assembly of wrapping strip
Face) multiple boss are set, the spacing between two neighboring boss 33 is preferably 190mm~210mm, wherein spacing refers to adjacent
Arc length of two boss approximately along glass periphery direction.
Further, first intercommunicating pore 44 is single hole, and second intercommunicating pore 45 is the medial surface along wrapping strip 3
At least two first apertures of 31 arrangements, the sum of sectional area of first aperture are less than the sectional area of first intercommunicating pore,
The third connecting hole is at least two second orifices arranged along the lateral surface 32 of wrapping strip 3, and the second orifice is cut
The sum of area is less than the sectional area of first intercommunicating pore.
Since the width of boss is smaller with respect to the width of wrapping strip, and exist between the upper surface and bottom surface of boss certain
Difference in height, in injection moulding process, stream be first fill the lower part of wrapping strip, then up flowing fill projection section.If the
Two intercommunicating pores and third connecting hole are excessive, can play shunting function, and injection molding material is caused to flow to the second intercommunicating pore and third connecting hole
Flowing, causes projection section that can not fill.Meanwhile first intercommunicating pore also act as the work of the stream of the upper surface of wrapping strip walking guide
With, in order to guarantee that bubble and the extra injection molding PU material of stream end can be discharged from the first intercommunicating pore, first intercommunicating pore
Need opposite second intercommunicating pore and third connecting hole that there is bigger size.
Preferably, the sectional area of first intercommunicating pore 44 is 25~30mm2, the sectional area of second intercommunicating pore 45 it
With for 9~12mm2, the sum of the sectional area in the third connecting hole is 9~12mm2.It is led for convenience of stream is carried out in injection moulding process
To with flash is removed after the completion of injection molding, the section of first intercommunicating pore is preferably strip, second intercommunicating pore and
The section in tee joint hole is preferably circular.
Further, it is coated between the upper surface 331 of the boss 33 in the flash block 4 and the bottom surface 332 of boss 33
Height difference H be 10~15mm, spacing between the medial surface 31 of the wrapping strip 3 and the lateral surface 32 of wrapping strip 3 is 50~
65mm, the spacing L for being coated on the medial surface 333 of the boss 33 in the flash block 4 and the lateral surface 334 of boss 33 be 16~
20mm.For the wrapping strip 3 and boss 33 of above-mentioned size range, it is particularly easy to injection defect occur, flash of the present invention
Wrapping strip 3 and boss 33 of 4 structure of block especially suitable for the size range, the gas for the stream end that stream can be made to converge in this way
Bubble and extra injection molding PU expect discharge, solve the problems, such as to lack material.
Further, the upper surface 331 of the boss 33 is equipped with mold insert 5, is inlaid with post 6, the nail in the mold insert 5
Column 6 is coated and fixed on the boss 33 after passing through integrated injection molding.Wherein, near the stream end of the injection die cavities
Boss 33 on be coated with flash block 4, in which is simultaneously coated on the mold insert 5 on the boss 33.
The above content has been described in detail a kind of injection mold with flash block of the present invention, but this hair
It is bright not by the limitation of specific embodiments described above content, so any changing of carrying out of all technical essentials according to the present invention
Into, equivalent modifications and replacement etc., the scope of protection of the invention is belonged to.
Claims (10)
1. a kind of injection mold with flash block, including the upper die and lower die (1) being used cooperatively, the upper die and lower die (1)
The cavity body of mould for accommodating glass (2) is formed after molding, the cavity body of mould includes being arranged around the periphery of the glass (2)
Injection die cavities so that injection molding stream flowed along the injection die cavities and mold packet in the perimeter injection moulding of the glass (2)
Edge strip (3), it is characterised in that: the upper surface of the wrapping strip (3) is equipped with boss (33), and the boss (33) is along the glass
(2) circumferentially distributed, is coated with flash block (4) on the boss (33) of the stream end of the injection die cavities, described to overflow
Material block (4) is removably mounted on the lower section of the upper mold, and storage glue groove (43), the connection storage are equipped in the flash block (4)
Glue groove (43) and the first intercommunicating pore (44) of the upper surface (331) for the boss (33) being coated in the flash block (4) are connected to institute
State storage glue groove (43) and the second intercommunicating pore (45) of the medial surface (31) of the wrapping strip (3) and be connected to the storage glue groove (43) with
The third connecting hole of the lateral surface (32) of the wrapping strip (3).
2. injection mold according to claim 1, it is characterised in that: first intercommunicating pore (44) is located at the flash block
(4) inside, second intercommunicating pore (45) are located at the inner sidewall (41) of the flash block (4), and the third connecting hole is located at
The lateral wall (42) of the flash block (4).
3. injection mold according to claim 2, it is characterised in that: the inner sidewall (41) of the flash block (4) with it is described
The medial surface (31) of wrapping strip (3) concordantly, the lateral surface of the lateral wall (42) of the flash block (4) and the wrapping strip (3)
(32) concordant.
4. injection mold according to claim 1, it is characterised in that: the spacing between two neighboring boss (33) is
190mm~210mm.
5. injection mold according to claim 1, it is characterised in that: first intercommunicating pore (44) is single hole, described the
Two intercommunicating pores (45) are at least two first apertures arranged along the medial surface (31) of wrapping strip (3), first aperture
The sum of sectional area is less than the sectional area of first intercommunicating pore, and the third connecting hole is the lateral surface along wrapping strip (3)
(32) at least two second orifices arranged, the sum of sectional area of the second orifice are less than the section of first intercommunicating pore
Product.
6. injection mold according to claim 5, it is characterised in that: the sectional area of first intercommunicating pore (44) be 25~
30mm2, the sum of sectional area of second intercommunicating pore (45) is 9~12mm2, the sum of the sectional area in the third connecting hole be 9~
12mm2。
7. injection mold according to claim 5, it is characterised in that: the section of first intercommunicating pore (44) is strip
The section in shape, second intercommunicating pore (45) and third connecting hole is circle.
8. injection mold according to claim 1, it is characterised in that: the boss (33) being coated in the flash block (4)
Upper surface (331) and boss (33) bottom surface (332) between difference in height be 10~15mm.
9. injection mold according to claim 1, it is characterised in that: the medial surface (31) and bound edge of the wrapping strip (3)
Spacing between the lateral surface (32) of item (3) is 55~65mm, is coated on the medial surface of the boss (33) in the flash block (4)
(333) and the spacing of the lateral surface (334) of boss (33) is 16~20mm.
10. injection mold according to claim 1, it is characterised in that: the upper surface (331) of the boss (33) is equipped with edge
Part (5), the mold insert (5) is interior to be inlaid with post (6), and the post (6) is coated and fixed after passing through integrated injection molding described
On boss (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910331607.0A CN110281468B (en) | 2019-04-24 | 2019-04-24 | Injection mold with overflow piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910331607.0A CN110281468B (en) | 2019-04-24 | 2019-04-24 | Injection mold with overflow piece |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110281468A true CN110281468A (en) | 2019-09-27 |
| CN110281468B CN110281468B (en) | 2020-07-24 |
Family
ID=68001675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910331607.0A Active CN110281468B (en) | 2019-04-24 | 2019-04-24 | Injection mold with overflow piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110281468B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112440435A (en) * | 2020-11-02 | 2021-03-05 | 智龙传动(厦门)科技有限公司 | Structure for reducing material shortage of attachment part during secondary injection molding of workpiece |
| CN113752480A (en) * | 2021-09-23 | 2021-12-07 | 信义汽车部件（芜湖）有限公司 | Skylight glass injection mold |
| CN115139462A (en) * | 2022-05-26 | 2022-10-04 | 东风柳州汽车有限公司 | Reaction injection molding die and preparation method of reaction injection molding product |
| CN115302706A (en) * | 2022-06-28 | 2022-11-08 | 福耀玻璃工业集团股份有限公司 | Automobile glass edge-wrapping die and trimming method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112440435A (en) * | 2020-11-02 | 2021-03-05 | 智龙传动(厦门)科技有限公司 | Structure for reducing material shortage of attachment part during secondary injection molding of workpiece |
| CN113752480A (en) * | 2021-09-23 | 2021-12-07 | 信义汽车部件（芜湖）有限公司 | Skylight glass injection mold |
| CN115139462A (en) * | 2022-05-26 | 2022-10-04 | 东风柳州汽车有限公司 | Reaction injection molding die and preparation method of reaction injection molding product |
| CN115139462B (en) * | 2022-05-26 | 2023-12-15 | 东风柳州汽车有限公司 | Reaction injection molding die and preparation method of reaction injection molding product |
| CN115302706A (en) * | 2022-06-28 | 2022-11-08 | 福耀玻璃工业集团股份有限公司 | Automobile glass edge-wrapping die and trimming method |
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| Publication number | Publication date |
|---|---|
| CN110281468B (en) | 2020-07-24 |
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