CN107877796A - A kind of mould of surface trimming cast gate - Google Patents

A kind of mould of surface trimming cast gate Download PDF

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Publication number
CN107877796A
CN107877796A CN201711266934.XA CN201711266934A CN107877796A CN 107877796 A CN107877796 A CN 107877796A CN 201711266934 A CN201711266934 A CN 201711266934A CN 107877796 A CN107877796 A CN 107877796A
Authority
CN
China
Prior art keywords
cast gate
mould
cavity
surface trimming
ejector retainner
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.)
Pending
Application number
CN201711266934.XA
Other languages
Chinese (zh)
Inventor
卢卫华
赵英英
严福笙
李文德
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
YISHENG ELECTRIC WIRE PLASTIC (KUNSHAN) CO Ltd
Original Assignee
YISHENG ELECTRIC WIRE PLASTIC (KUNSHAN) CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by YISHENG ELECTRIC WIRE PLASTIC (KUNSHAN) CO Ltd filed Critical YISHENG ELECTRIC WIRE PLASTIC (KUNSHAN) CO Ltd
Priority to CN201711266934.XA priority Critical patent/CN107877796A/en
Publication of CN107877796A publication Critical patent/CN107877796A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/38Cutting-off equipment for sprues or ingates
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/38Cutting-off equipment for sprues or ingates
    • B29C2045/384Cutting-off equipment for sprues or ingates cutting the sprue by a plunger movable into the runner channel

Abstract

Present invention is disclosed a kind of mould of surface trimming cast gate, including die holder (5), the lower mould (3) being installed on the die holder (5) and the upper mould (6) being engaged with the lower mould (3), on described, lower mould (6, 3) model cavity (7) and the cast gate (11) being connected with the model cavity (7) are provided between, the first cavity (5a) is offered in the die holder (5), the material head ejector retainner plate (8) being slidably matched therewith is provided with first cavity (5a), the material head ejector retainner plate (8) is driven by forming bench drive shaft (12), the mould of the surface trimming cast gate also includes cast gate thimble (9), the forming bench drive shaft (12) can drive the cast gate thimble (9) to cut off the cast gate (11).Before cast gate separation is advanced to die sinking by the present invention, subsequent handling is eliminated, is advantageous to the production automation, improves production efficiency.

Description

A kind of mould of surface trimming cast gate
Technical field
The present invention relates to injection molding field, more particularly to a kind of mould of surface trimming cast gate.
Background technology
After moulding, material head is connected usual working of plastics with product by cast gate, and worker needs to trim cast gate Processing, labor intensity is big, and cast gate is trimmed unsightly.Specific practice is that die sinking back center releases product, and it is artificial again to take out product Remove.Because now plastics have cooled down, unsightly, product quality does not increase the gate land after shearing, still needs multiple people Work trimming could trim cast gate smooth, and labor intensity is larger, adds cost of labor.
The content of the invention
It is an object of the invention to for drawbacks described above of the prior art, there is provided a kind of mould of surface trimming cast gate, Can be with surface trimming cast gate.
For achieving the above object, present invention employs following technical scheme:A kind of mould of surface trimming cast gate, bag Die holder, the lower mould being installed on the die holder and the upper mould being engaged with the lower mould are included, is provided between the upper and lower mould Model cavity and the cast gate being connected with the model cavity, the first cavity is offered in the die holder, is set in first cavity There is the material head ejector retainner plate being slidably matched therewith, the material head ejector retainner plate is driven by forming bench drive shaft, and the surface trimming pours The mould of mouth also includes cast gate thimble, and the forming bench drive shaft drives the cast gate thimble to cut off the cast gate.
In addition, the present invention also proposes following attached technical scheme:
The die holder is further opened with the second cavity communicated with first cavity, and the mould of the surface trimming cast gate is also Including the cast gate ejector retainner plate being slidably matched with second cavity.
Described cast gate thimble one end is connected on the cast gate ejector retainner plate, and the other end is arranged at the model cavity and poured with described Mouth junction.
Second cavity is arranged at below first cavity.
The section of second cavity is less than the section of first cavity.
The height of second cavity is more than the thickness of the cast gate ejector retainner plate.
The mould of the surface trimming cast gate also includes being arranged between the cast gate ejector retainner plate and the material head ejector retainner plate Elastic component.
Mounting hole is offered on the cast gate ejector retainner plate, the elastic component is installed in the mounting hole.
The elastic component is spring.
Compared to prior art, the advantage of the invention is that:
1. product is connected with cast gate after traditional plastic mould die sinking, two procedures are needed to carry out manually shearing separation, and this Before cast gate separation is advanced to die sinking by invention, subsequent handling is eliminated, is advantageous to the production automation, improves production efficiency;
2. in mould inscribe die molding process, the automation of cast gate separation ensures appearance consistency at cast gate separation, and Traditional Man separation de-gating process can not ensure that outward appearance is consistent at cast gate separation;
3. the automation of mould inscribe shaping, it is action to avoid good-for-nothing in production process, and the full-automation of product Mechanical shearing guaranteed quality uniformity, more traditional mould, which has, in product large-scale production process can not intend comparing advantage;
4. being cut off when cast gate is uncolled, cutting is easier, and kerf quality is more preferably.
Brief description of the drawings
Structural representation when Fig. 1 is the mould matched moulds of surface trimming cast gate of the present invention.
Fig. 2 is the enlarged drawing in A portions in Fig. 1.
Structural representation when Fig. 3 is the mould cut-out cast gate of surface trimming cast gate of the present invention.
Structural representation when Fig. 4 is the mould die sinking of surface trimming cast gate of the present invention.
Structural representation when Fig. 5 is the mould product ejection of surface trimming cast gate of the present invention.
Embodiment
Technical solution of the present invention is further non-limitingly described in detail below in conjunction with preferred embodiment and its accompanying drawing.
As shown in Figures 1 to 5, corresponding to a kind of mould of the surface trimming cast gate of preferred embodiment of the present invention, including bottom Plate 2, the die holder 5 being connected with bottom plate 2, the lower mould 3 being installed on die holder 5, the upper mould 6 being engaged with lower mould 3 and it is installed on institute State the top plate 1 on mould 6.
Model cavity 7 and the cast gate 11 being connected with model cavity 7 are provided between upper and lower mould 6,3, the plastics of melting are by pouring Mouth 11, which enters in model cavity 7, to be molded.Die holder 5 is in hollow structure, is provided with step 5c in it, and by boundary of step 5c, upside is first Cavity 5a, downside are that the second cavity 5b, the second cavity 5b section is less than the first cavity 5a section.
The material head ejector retainner plate 8 being slidably matched with it is provided with the first cavity 5a, material head is installed on material head ejector retainner plate 8 Thimble 14, the upper end of material head thimble 14 are arranged at the lower section of model cavity 7.When material head ejector retainner plate 8 moves up, material head thimble 14 can incite somebody to action The product ejection of shaping in model cavity 7.
Reset assembly 15 is provided between material head ejector retainner plate 8 and lower mould 3, reset assembly 15 includes being arranged at the lower He of mould 3 Lead 16 between material head ejector retainner plate 8 and the spring 17 being set on lead 16, the one end of spring 17 offset with lower mould 3, The other end offsets with material head ejector retainner plate 8.
The cast gate ejector retainner plate 10 being slidably matched with it is provided with the second cavity 5b, the thickness of cast gate ejector retainner plate 10 is less than Second cavity 5b height, i.e., when cast gate ejector retainner plate 10 and material head ejector retainner plate 8 are respectively placed in the second cavity 5b and the first cavity 5a Bottom when, still remaining certain gap between cast gate ejector retainner plate 10 and material head ejector retainner plate 8 (with reference to figure 1 and Fig. 2).The gap It is preferably sized to identical with the thickness of cast gate 11.Cast gate thimble 9, the other end of cast gate thimble 9 are installed on cast gate ejector retainner plate 10 Extend to the lower section of cast gate 11.
Mounting hole 10a is offered on cast gate ejector retainner plate 10, elastic component 13 is provided with mounting hole 10a, elastic component 13 Upper end offsets with material head ejector retainner plate 8.Elastic component 13 is preferably spring.
The lower section of cast gate ejector retainner plate 10 is provided with forming bench drive shaft 12, and forming bench drive shaft 12 can drive cast gate thimble Plate 10 moves upwards so that cast gate thimble 9 cuts off cast gate 11;When formed product finishes, after cooling, forming bench drive shaft 12 pushes away Dynamic cast gate ejector retainner plate 10 is contacted with material head ejector retainner plate 8, and drives material head ejector retainner plate 8 up, and product is ejected into model cavity 7.Treat as After type board drive shaft 12 moves downward, elastic component 13 will promote cast gate ejector retainner plate 10 accurately to reset.
The mold use method of the surface trimming cast gate is as follows:
The first step:(with reference to figure 1) matched moulds:Upper mould 6 and top plate 1 are attached on lower mould 3.
Second step:Project injection:By in the plastics injection model chamber 7 of melting.
3rd step:Pressurize.
4th step:(with reference to figure 3) before cast gate cooling, forming bench driving cast gate thimble ejects a segment distance upwards, cuts Break cast gate, and now cast gate ejector retainner plate 10 does not drive material head ejector retainner plate 8 to act.
5th step:(with reference to figure 4) die sinking:Upper mould 6 and top plate 1 are removed from lower mould 3.
6th step:(with reference to figure 5) forming bench drive shaft driving cast gate ejector retainner plate 10 is up, drive material head ejector retainner plate 8 to Upper motion, material head thimble 14 eject the product of shaping from model cavity 7.
The mould of the surface trimming cast gate of the present invention is by setting cast gate ejector retainner plate and material head thimble separated by a distance Plate so that it can cut off cast gate when product is also uncolled, ensure that the planarization of gate cutting, and cut manually without worker Slave interrupt interface, efficiency high.
The present invention at least has the following advantages that:
1. product is connected with cast gate after traditional plastic mould die sinking, two procedures are needed to carry out manually shearing separation, and this Before cast gate separation is advanced to die sinking by invention, subsequent handling is eliminated, is advantageous to the production automation, improves production efficiency;
2. in mould inscribe die molding process, the automation of cast gate separation ensures appearance consistency at cast gate separation, and Traditional Man separation de-gating process can not ensure that outward appearance is consistent at cast gate separation;
3. the automation of mould inscribe shaping, it is action to avoid good-for-nothing in production process, and the full-automation of product Mechanical shearing guaranteed quality uniformity, more traditional mould, which has, in product large-scale production process can not intend comparing advantage;
4. being cut off when cast gate is uncolled, cutting is easier, and kerf quality is more preferably.
It is pointed out that the technical concepts and features of above-mentioned preferred embodiment only to illustrate the invention, its object is to Allow person skilled in the art to understand present disclosure and implement according to this, the protection of the present invention can not be limited with this Scope.Any equivalent change or modification in accordance with the spirit of the invention, it should all be included within the scope of the present invention.

Claims (9)

1. a kind of mould of surface trimming cast gate, including die holder (5), the lower mould (3) that is installed on the die holder (5) and with institute State the upper mould (6) that lower mould (3) is engaged, be provided between the upper and lower mould (6,3) model cavity (7) and with the model cavity (7) The cast gate (11) being connected, the die holder (5) is interior to offer the first cavity (5a), is provided with therewith in first cavity (5a) The material head ejector retainner plate (8) being slidably matched, the material head ejector retainner plate (8) are driven by forming bench drive shaft (12), it is characterised in that: The mould of the surface trimming cast gate also includes cast gate thimble (9), and the forming bench drive shaft (12) can drive the cast gate Thimble (9) cuts off the cast gate (11).
2. according to the mould of surface trimming cast gate described in claim 1, it is characterised in that:The die holder (5) is further opened with and institute The second cavity (5b) that the first cavity (5a) communicates is stated, the mould of the surface trimming cast gate also includes and second cavity The cast gate ejector retainner plate (10) that (5b) is slidably matched.
3. according to the mould of surface trimming cast gate described in claim 2, it is characterised in that:Cast gate thimble (9) one end connection In on the cast gate ejector retainner plate (10), the other end is arranged at the model cavity (7) and the cast gate (11) junction.
4. according to the mould of surface trimming cast gate described in claim 2, it is characterised in that:Second cavity (5b) is arranged at institute State below the first cavity (5a).
5. according to the mould of surface trimming cast gate described in claim 2, it is characterised in that:The section of second cavity (5b) is small In the section of first cavity (5a).
6. according to the mould of surface trimming cast gate described in claim 2, it is characterised in that:The height of second cavity (5b) is big In the thickness of the cast gate ejector retainner plate (10).
7. according to the mould of surface trimming cast gate described in claim 2, it is characterised in that:The mould of the surface trimming cast gate is also Including the elastic component (13) being arranged between the cast gate ejector retainner plate (10) and the material head ejector retainner plate (8).
8. according to the mould of surface trimming cast gate described in claim 7, it is characterised in that:Opened up on the cast gate ejector retainner plate (10) There is mounting hole (10a), the elastic component (13) is installed in the mounting hole (10a).
9. according to the mould of surface trimming cast gate described in claim 8, it is characterised in that:The elastic component (13) is spring.
CN201711266934.XA 2017-12-05 2017-12-05 A kind of mould of surface trimming cast gate Pending CN107877796A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711266934.XA CN107877796A (en) 2017-12-05 2017-12-05 A kind of mould of surface trimming cast gate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711266934.XA CN107877796A (en) 2017-12-05 2017-12-05 A kind of mould of surface trimming cast gate

Publications (1)

Publication Number Publication Date
CN107877796A true CN107877796A (en) 2018-04-06

Family

ID=61772696

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201711266934.XA Pending CN107877796A (en) 2017-12-05 2017-12-05 A kind of mould of surface trimming cast gate

Country Status (1)

Country Link
CN (1) CN107877796A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113211737A (en) * 2021-05-14 2021-08-06 诸暨市碧涵精工模塑有限公司 Injection mold gate planing and cutting device and planing and cutting method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113211737A (en) * 2021-05-14 2021-08-06 诸暨市碧涵精工模塑有限公司 Injection mold gate planing and cutting device and planing and cutting method thereof

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