CN107877796A - A kind of mould of surface trimming cast gate - Google Patents
A kind of mould of surface trimming cast gate Download PDFInfo
- 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
Links
- 238000009966 trimming Methods 0.000 title claims abstract description 31
- 239000000463 material Substances 0.000 claims abstract description 27
- 238000000926 separation method Methods 0.000 abstract description 13
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 210000003128 Head Anatomy 0.000 description 22
- 238000000034 method Methods 0.000 description 8
- 229920003023 plastic Polymers 0.000 description 6
- 239000004033 plastic Substances 0.000 description 6
- 238000010008 shearing Methods 0.000 description 5
- 238000007493 shaping process Methods 0.000 description 4
- 238000000465 moulding Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000011031 large scale production Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 239000000243 solution Substances 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
- B29C45/38—Cutting-off equipment for sprues or ingates
-
- 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
- B29C45/38—Cutting-off equipment for sprues or ingates
- B29C2045/384—Cutting-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
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.
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)
| 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 |
-
2017
- 2017-12-05 CN CN201711266934.XA patent/CN107877796A/en active Pending
Cited By (1)
| 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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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |