CN207630446U - A kind of screw head of improved structure - Google Patents
A kind of screw head of improved structure Download PDFInfo
- Publication number
- CN207630446U CN207630446U CN201721612722.8U CN201721612722U CN207630446U CN 207630446 U CN207630446 U CN 207630446U CN 201721612722 U CN201721612722 U CN 201721612722U CN 207630446 U CN207630446 U CN 207630446U
- Authority
- CN
- China
- Prior art keywords
- pressure release
- runner
- screw head
- entrance
- cylinder
- 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.)
- Expired - Fee Related
Links
- 230000015556 catabolic process Effects 0.000 claims abstract description 16
- 238000001746 injection moulding Methods 0.000 claims abstract description 9
- 230000002093 peripheral effect Effects 0.000 claims abstract description 5
- 230000008018 melting Effects 0.000 abstract description 9
- 238000002844 melting Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 3
- 208000015943 Coeliac disease Diseases 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 206010020852 Hypertonia Diseases 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Abstract
The utility model is related to a kind of screw heads of improved structure.It includes head, stage casing cylinder and endpiece cylinder；Pressure release runner is equipped in the screw head, the entrance of the pressure release runner is located on the head of screw head, and the outlet of the pressure release runner is on the peripheral wall of endpiece cylinder；The inlet of the pressure release runner be equipped with one can be breakdown pressure release diaphragm, the pressure release diaphragm block pressure release runner entrance, the pressure release diaphragm have a breakdown threshold.The operation principle of the utility model is as follows, and when pressure is less than breakdown threshold, pressure release diaphragm blocks the entrance of pressure release runner, at this point, the entrance of pressure release runner is closed, melting charge cannot circulate in runner；When pressure is greater than or equal to the breakdown threshold, pressure release diaphragm can be breakdown, at this point, the entrance of pressure release runner is opened, melting charge can circulate in runner；It is possible thereby to realize the effect of pressure release, avoid overvoltage and influence injection-molded finished quality, also avoids overvoltage and damage the equipment such as the mold of injection molding machine, barrel.
Description
Technical field
The utility model is related to a kind of screw heads of improved structure.
Background technology
Injection molding machine is that variously-shaped plastics system is made using mould for plastics for thermoplastic or thermosetting plastics
The main former of product.Existing screw injection molding machine during the work time, by lead-screw (being used as plunger to be used) with
Pushing away makes the melting charge in barrel in the storing section of screw head front end be injected in mold cavity through nozzle.But due to the position of screw rod
Shifting amount, density of melting charge etc. are difficult to be accurately determined, the case where often will appear the hypertonia of storing section and mold cavity, and
Excessively high pressure not only influences the quality of injecting products finished product, can also cause to damage to the equipment such as mold, barrel in injection molding machine, drop
Low service life.
Invention content
The purpose of this utility model is to provide a kind of screw heads for the improved structure ensureing service life.
Above-mentioned purpose is achieved by the following technical solution：
A kind of screw head of improved structure is applied to injection molding machine, including what is be sequentially connected is in cone-shaped head, stage casing column
Body and endpiece cylinder；A pressure release runner is equipped in the screw head, the entrance of the pressure release runner is located on the head of screw head, this is let out
Press the outlet of runner on the peripheral wall of endpiece cylinder；The inlet of the pressure release runner be equipped with one can be breakdown pressure release film
Piece, the pressure release diaphragm block the entrance of pressure release runner, which has a breakdown threshold.
The operation principle of the utility model is as follows, and when pressure is less than breakdown threshold, pressure release diaphragm blocks pressure release runner
Entrance, at this point, the entrance of pressure release runner is closed, melting charge cannot circulate in runner；When pressure is hit more than or equal to this
When wearing threshold value, pressure release diaphragm can be breakdown, at this point, the entrance of pressure release runner is opened, melting charge can circulate in runner；
It is possible thereby to realize the effect of pressure release, avoids overvoltage and influence injection-molded finished quality, also avoid mould that is over-pressed and damaging injection molding machine
The equipment such as tool, barrel, it is ensured that the service life of the components such as mold, barrel.
Description of the drawings
Fig. 1 shows the stereoscopic schematic diagram of the utility model；
Fig. 2 shows the perspective exploded views of the utility model；
Fig. 3 shows the schematic cross-sectional view of the utility model；
Fig. 4 shows the stereoscopic schematic diagram of the utility model, wherein having cut the office of screw head, pressure release diaphragm and trim ring
Portion；
Fig. 5 shows the portions the A partial enlarged view of Fig. 4；
Fig. 6 shows the schematic diagram after decomposing each component on the basis of Fig. 5；
Fig. 7 shows the front view of the pressure release diaphragm of the utility model.
Drawing reference numeral：
11 screw heads, 12 heads, 13 stage casing cylinders, 14 endpiece cylinders, the entrance of 15 pressure release runners, 16 pressure release runners go out
Mouth, the peripheral wall of 17 endpiece cylinders, 18 pressure release diaphragms, 181 sheet bodies, 182 line of weakness, 19 sprues, 20 side runners, 21 screw heads
Axis, 22 step surfaces, 23 trim rings.
Specific implementation mode
Utility model will be further described in detail below with reference to the attached drawings and specific embodiments.
A kind of screw head 11 of improved structure as shown in Figures 1 to 7 is applied to injection molding machine, including what is be sequentially connected is in
Cone-shaped head 12, stage casing cylinder 13 and endpiece cylinder 14；
A pressure release runner is equipped in the screw head 11, the entrance 15 of the pressure release runner is located on the head 12 of screw head, should
The outlet 16 of pressure release runner is located on the peripheral wall 17 of endpiece cylinder；
Be equipped at the entrance 15 of the pressure release runner one can be breakdown pressure release diaphragm 18, the pressure release diaphragm 18 block pressure release
The entrance 15 of runner, the pressure release diaphragm 18 have a breakdown threshold.
The operation principle of the present embodiment is as follows, and when pressure is less than breakdown threshold, pressure release diaphragm blocks entering for pressure release runner
Mouthful, at this point, the entrance of pressure release runner is closed, melting charge cannot circulate in runner；When pressure is greater than or equal to the breakdown
When threshold value, pressure release diaphragm can be breakdown, at this point, the entrance of pressure release runner is opened, melting charge can circulate in runner；By
The effect of pressure release may be implemented in this, avoid overvoltage and influence injection-molded finished quality, also avoid overvoltage and damage injection molding machine mold,
The equipment such as barrel, it is ensured that the service life of the components such as mold, barrel.
The pressure release runner includes interconnected sprue 19 and side runner 20, which sequentially passes through screw head
It is stretched into endpiece cylinder 14 after head 12 and stage casing cylinder 13, which is located in endpiece cylinder 14, the sprue 19
One end is the entrance 15 of pressure release runner, and the other end of the sprue 19 connect with one end of side runner 20, the side runner 20 it is another
One end is the outlet 16 of pressure release runner.
The extending direction of the sprue 19 is parallel to the axis 21 of screw head, and the extending direction of the side runner 20 favours spiral shell
The axis 21 of head.In the present embodiment, sprue is located at the center of screw head, the extending direction and screw rod of the side runner 20
The angle of the axis 21 of head is 0 degree to 90 degree, preferably 45 degree.The Technical Design is reasonable, in order to which melting charge is in pressure release
It circulates in runner.
The pressure release diaphragm 18 includes sheet body 181 and " C " the shape line of weakness 182 on sheet body 181.The technical solution structure
Simply, in the present embodiment, the concrete structure of pressure release diaphragm and manufacture can be with the knots of the explosion-proof diaphragm in reference battery explosion-proof technology
Structure and manufacture.
It is equipped with an annular step face 22 in the entrance 15 of the pressure release runner, one is equipped in the entrance 15 of the pressure release runner
Circular ring shape trim ring 23, the pressure release diaphragm 18 are held between trim ring 23 and step surface 23.The technical solution can improve pressure release
The stability and fastness of diaphragm assembly.
In the present embodiment, which is threadedly coupled with the head 12 of screw head, in order to dismount.
Claims (5)
1. a kind of screw head of improved structure is applied to injection molding machine, including what is be sequentially connected is in cone-shaped head, stage casing cylinder
With endpiece cylinder, it is characterised in that：
A pressure release runner is equipped in the screw head, the entrance of the pressure release runner is located on the head of screw head, the pressure release runner
Outlet is on the peripheral wall of endpiece cylinder；
The inlet of the pressure release runner be equipped with one can be breakdown pressure release diaphragm, which blocks pressure release runner and enters
Mouthful, which has a breakdown threshold.
2. a kind of screw head of improved structure according to claim 1, it is characterised in that：The pressure release runner includes mutually interconnecting
Logical sprue and side runner, the sprue sequentially pass through screw head head and stage casing cylinder after stretch into endpiece cylinder, should
Side runner is located in endpiece cylinder, and one end of the sprue is the entrance of pressure release runner, the other end and side runner of the sprue
One end connection, the other end of the side runner is the outlet of pressure release runner.
3. a kind of screw head of improved structure according to claim 2, it is characterised in that：The extending direction of the sprue is flat
For row in the axis of screw head, the extending direction of the side runner favours the axis of screw head.
4. a kind of screw head of improved structure according to claim 1, it is characterised in that：The pressure release diaphragm include sheet body and
" C " shape line of weakness on sheet body.
5. a kind of screw head of improved structure according to claim 1, it is characterised in that：It is set in the entrance of the pressure release runner
There is an annular step face, a circular ring shape trim ring is installed in the entrance of the pressure release runner, which is held in trim ring
Between step surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721612722.8U CN207630446U (en) | 2017-11-27 | 2017-11-27 | A kind of screw head of improved structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721612722.8U CN207630446U (en) | 2017-11-27 | 2017-11-27 | A kind of screw head of improved structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207630446U true CN207630446U (en) | 2018-07-20 |
Family
ID=62854436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721612722.8U Expired - Fee Related CN207630446U (en) | 2017-11-27 | 2017-11-27 | A kind of screw head of improved structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207630446U (en) |
-
2017
- 2017-11-27 CN CN201721612722.8U patent/CN207630446U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207617066U (en) | One kind can pressure release type injection molding machine | |
| CN207630446U (en) | A kind of screw head of improved structure | |
| KR101280013B1 (en) | Core assembly for under-cut relieving of elbow injection mold | |
| CN105235135A (en) | Nozzle of injection molding machine used for producing two-color plastic blocks and plastic blocks with different colors on inner layers and outer layers | |
| CN206048690U (en) | A kind of antiseized front mode structure of injection mold | |
| CN206870282U (en) | A kind of manufacture mould for the soft rollers of PVC | |
| CN205522256U (en) | Meltallizing conversion equipment of two cascade injection molding machines | |
| CN204354414U (en) | The flat side gate of a kind of submarine on injection mold | |
| CN103624936A (en) | Injection mold | |
| CN201863352U (en) | Injection mold | |
| CN207465774U (en) | A kind of mobile lens lens barrel into gluing mechanism | |
| CN108973030B (en) | Improved oil seal mold | |
| CN203622844U (en) | Exhausting structure of polyurethane product mold | |
| CN105922519A (en) | Six-cavity syringe mold | |
| CN205522264U (en) | Glasses picture frame injection mold | |
| CN110181725A (en) | A kind of plastic mould side core-pulling ejecting mechanism and its application method | |
| CN105345999A (en) | Injection mold with pushing-out mechanism | |
| CN214726235U (en) | Durable charging barrel assembly for engineering plastic mold | |
| CN205835827U (en) | A kind of injection machine air-assisted extrusion nozzle arrangements | |
| CN205075215U (en) | Feeding gun | |
| CN207789465U (en) | The trident branch mold of cable | |
| CN204997923U (en) | Injection molding machine magazine attachment | |
| CN204249246U (en) | A kind of novel ox horn formula die glue inlet structure of drawing water dividing gap voluntarily in mould | |
| CN215203224U (en) | Simple and easy injection mold quick detach mold insert of epoxy material | |
| CN210211117U (en) | Automatic change injection moulding machine for battery case preparation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180720 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |