CN207465809U - Screw in injection molding machine head assembly and injection molding machine - Google Patents
Screw in injection molding machine head assembly and injection molding machine Download PDFInfo
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- CN207465809U CN207465809U CN201721547961.XU CN201721547961U CN207465809U CN 207465809 U CN207465809 U CN 207465809U CN 201721547961 U CN201721547961 U CN 201721547961U CN 207465809 U CN207465809 U CN 207465809U
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- molding machine
- screw
- injection molding
- connecting rod
- ring
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Abstract
The utility model belongs to injection-moulding device field, specifically discloses a kind of screw in injection molding machine head assembly and includes the injection molding machine of above-mentioned screw in injection molding machine head assembly, it is intended to solve the problems, such as how to improve closing precision to ensure injection pressure stability.Screw in injection molding machine head assembly, including screw head main body, check ring and thrust ring, screw head main body includes taper work end, connecting rod and threaded rod, and thrust ring is arranged in connecting rod, and check ring is slidably sleeved in connecting rod and between taper work end and thrust ring；Check ring and the planar annular that the end face that thrust ring corresponds to each other is the axial line perpendicular to connecting rod.The planar annular of the axial line perpendicular to connecting rod is disposed as by the end face that check ring and thrust ring correspond to each other, improve closing precision when check ring is affixed with thrust ring, it ensure that the stability of injection pressure, collect effect to taper work end conducive to molten plastic is improved so that product molding proces s parameters are stablized.
Description
Technical field
The utility model belongs to injection-moulding device field, and in particular to a kind of screw in injection molding machine head assembly and injection molding machine.
Background technology
Existing screw in injection molding machine head assembly include screw head main body, check ring and thrust ring, screw head main body include according to
Secondary coaxially connected taper work end, connecting rod and threaded rod, taper work end are equipped with injecting hole, and thrust ring is arranged on connection
On bar, check ring is slidably sleeved in connecting rod and between taper work end and thrust ring, check ring and connecting rod
Between be formed with molten plastic channel, check ring and the matching that the end face that thrust ring corresponds to each other is 15 °~30 ° of angle of inclination
Inclined surface, the gap between check ring and connecting rod are generally 12.5mm；Check ring slides into end face and is affixed with taper work end
When, the gap between the end face that check ring and thrust ring correspond to each other is 6mm；Check ring slides into end face and is affixed with thrust ring
When, injecting hole is connected with molten plastic channel.Screw rod head assembly primarily serves following two functions in injection molding machine：When
Check ring advance is affixed with taper work end during plasticizing, and molten plastic passes through the gap between check ring end face and thrust ring end face
Into molten plastic channel, collect to taper work end；Second is that check ring retrogressing contacts rapidly with thrust ring end face in injection
Closing gap, the molten plastic that molten plastic Channel front end collects flow to taper work end under the action of screw rod injection pressure
On injecting hole enter mold.
There are following defects for existing screw in injection molding machine head assembly：One, it is used between check ring end face and thrust ring end face
Contact of incline plane under the reaction force of injection pressure, is susceptible to close bad, causes injection pressure unstable, to screw head
It is dropped under the action of the molten plastic that front end is collected, so as to cause the unstable of product molding proces s parameters；Two, check ring is with connecting
Gap between bar is larger, and for molten plastic in plasticizing, to plastics, friction is small in larger gap, easily rests at this,
It forms long-time heat damage and decomposes, white plastic can generate the heterochromatic phenomenons such as jaundice；Three, check ring slides into end face and cone
When shape working end is affixed, the gap between the end face that check ring and thrust ring correspond to each other is larger, due between two end faces
Spacing it is big, be molded start when, the sensitivity that check ring retreats is poor, it is impossible to which moment closes plastic of conduit, and plastics can flow backwards
In the screw channel for entering the threaded rod behind thrust ring, cause metering inaccurate, the problems such as product weight deviation.Disadvantages described above can influence
To the injection repeatable accuracy for the product having higher requirements to size, degree of deformation, appearance.
Utility model content
The utility model provides a kind of screw in injection molding machine head assembly, it is intended to which how solution improves closing precision to ensure note
The problem of blow pressure stability.
Technical solution is used by the utility model solves its technical problem：Screw in injection molding machine head assembly, including screw rod
Head main body, check ring and thrust ring, the screw head main body include the taper work end, connecting rod and the screw thread that sequentially coaxially connect
Bar, the thrust ring are arranged in connecting rod, and the check ring is slidably sleeved in connecting rod and positioned at taper work end
Between thrust ring；The check ring and the annular that the end face that thrust ring corresponds to each other is the axial line perpendicular to connecting rod
Plane.
Further, the taper work end is equipped with injecting hole, it is formed between the check ring and connecting rod molten
Melt plastic of conduit；When the end face of check ring is not affixed with the end face at taper work end, the injecting hole connects with molten plastic channel
It is logical.
Further, the injecting hole is at least three, and the battle array in a ring centered on the axial line at taper work end
Column distribution.
Further, the injecting hole is the hole that cross section is in "U" shaped.
Further, the gap between the check ring and connecting rod is 6mm.
Further, when the end face that the check ring slides into end face and taper work end is affixed, check ring and thrust
Gap between the end face that ring corresponds to each other is 3.5mm.
Further, the connecting rod is equipped with the taper shaft shoulder, one end that the taper shaft shoulder is relatively large in diameter is towards spiral shell
Rasp bar, the thrust ring are set in the rod segment of the connecting rod between the taper shaft shoulder and threaded rod.
The utility model additionally provides a kind of injection molding machine, including any one above-mentioned screw in injection molding machine head assembly.
The beneficial effects of the utility model are：By the way that check ring and the end face that thrust ring corresponds to each other are disposed as hanging down
Directly in the planar annular of the axial line of connecting rod, closing precision when check ring is affixed with thrust ring is improved, in injection pressure
Reaction force under, the closing for being affixed position is good, ensure that the stability of injection pressure, conducive to molten plastic is improved to spiral shell
Collect effect in the taper work end of head main body so that product molding proces s parameters are stablized.It will be between check ring and connecting rod
Gap be defined to 6mm, compared with prior art, the horizontal stroke of molten plastic channel is reduced while molten plastic flow is ensured
The area in section, conducive to speed when increasing molten plastic by molten plastic channel, it is possible to reduce molten plastic is moulded in melting
Expect the residence time in channel, avoid the formation of stagnant material dead angle, while avoid molten plastic and thermally decomposed for a long time.By check ring
When sliding into the end face at end face and taper work end and being affixed, the gap limit between the end face that check ring and thrust ring correspond to each other
It is set to 3.5mm, gap at this is made to become smaller under the premise of ensureing that molten plastic flows into, improves closing of the check ring in injection
Sensitivity, along with the annular gap structure of the axial line perpendicular to connecting rod also is able to that molten plastic is avoided to flow backwards.
Description of the drawings
Fig. 1 is the implementation structure diagram of the utility model；
Fig. 2 is the left view of Fig. 1；
In figure label for：Screw head main body 100, taper work end 110, injecting hole 111, connecting rod 120, molten plastic lead to
Road 121, the taper shaft shoulder 122, threaded rod 130, check ring 200, thrust ring 300.
Specific embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings.
As depicted in figs. 1 and 2, screw in injection molding machine head assembly, including screw head main body 100, check ring 200 and thrust ring
300, the screw head main body 100 includes the taper work end 110, connecting rod 120 and the threaded rod 130 that sequentially coaxially connect, institute
It states thrust ring 300 to be arranged in connecting rod 120, the check ring 200 is slidably sleeved in connecting rod 120 and positioned at taper
Between working end 110 and thrust ring 300；The check ring 200 is perpendicular to even with the end face that thrust ring 300 corresponds to each other
The planar annular of the axial line of extension bar 120.It is disposed as by the end face that check ring 200 corresponds to each other with thrust ring 300
Perpendicular to the planar annular of the axial line of connecting rod 120, closing precision when check ring 200 is affixed with thrust ring 300 is improved,
Under the reaction force of injection pressure, the closing for being affixed position is good, ensure that the stability of injection pressure, molten conducive to improving
Melt plastics and collect effect to taper work end 110.
Specifically, again as shown in Figure 1, the taper work end 110 is equipped with injecting hole 111, the check ring 200 is with connecting
Molten plastic channel 121 is formed between extension bar 120；End face of the end face of check ring 200 not with taper work end 110 is affixed
When, the injecting hole 111 is connected with molten plastic channel 121.The port of export of injecting hole 111 and the front end at taper work end 110
Corresponding, molten plastic collects after the outflow of injecting hole 111 to be molded with the front end at taper work end 110.
In order to improve injection effect, as shown in Fig. 2, the injecting hole 111 is at least three, and with taper work end 110
Axial line centered on circular array be distributed.The structure of injecting hole 111 can be a variety of, and preferably cross section is in "U" shaped
Hole.
Preferably, the gap between the check ring 200 and connecting rod 120 is 6mm.By check ring 200 and connecting rod 120
Between gap be defined to 6mm, compared with prior art, molten plastic channel is reduced while molten plastic flow is ensured
121 cross-sectional area, conducive to speed when increasing molten plastic by molten plastic channel 121, it is possible to reduce molten plastic
Residence time in molten plastic channel 121 avoids the formation of stagnant material dead angle, while avoids heated for a long time point of molten plastic
Solution.
Preferably, when the check ring 200 slides into the end face at end face and taper work end 110 and is affixed, check ring 200 with
Gap between the end face that thrust ring 300 corresponds to each other is 3.5mm.The screw in injection molding machine head assembly of above structure, is ensureing
Molten plastic makes gap at this become smaller under the premise of flowing into, and improves closing sensitivity of the check ring 200 in injection, adds
Annular gap structure perpendicular to the axial line of connecting rod 120 also is able to that molten plastic is avoided to flow backwards.
As a kind of preferred embodiment of the utility model, then as shown in Figure 1, the connecting rod 120 is equipped with the taper shaft shoulder
122, one end that the taper shaft shoulder 122 is relatively large in diameter is set to the taper shaft shoulder 122 towards threaded rod 130, the thrust ring 300
In the rod segment of connecting rod 120 between threaded rod 130.On the one hand the taper shaft shoulder 122 can be entered with water conservancy diversion conducive to molten plastic
On the other hand molten plastic channel 121 further can avoid molten plastic from flowing backwards.
Injection molding machine, including any one above-mentioned screw in injection molding machine head assembly.
Screw in injection molding machine head assembly provided by the utility model can when being molded white ABS and HIPS class plastic products,
Eliminate common jaundice, carbonization, miscellaneous point, etc. heterochromatic problem, while can improve screw rod plasticizing precision and injection repeatable accuracy.
Claims (8)
1. screw in injection molding machine head assembly, including screw head main body (100), check ring (200) and thrust ring (300), the screw rod
Head main body (100) includes the taper work end (110), connecting rod (120) and the threaded rod (130) that sequentially coaxially connect, described to push away
Power ring (300) is arranged in connecting rod (120), and the check ring (200) is slidably sleeved in connecting rod (120) and is located at
Between taper work end (110) and thrust ring (300)；It is characterized in that：The check ring (200) and thrust ring (300) are each other
Corresponding end face is the planar annular perpendicular to the axial line of connecting rod (120).
2. screw in injection molding machine head assembly as described in claim 1, it is characterised in that：The taper work end (110) is equipped with
Injecting hole (111) is formed with molten plastic channel (121) between the check ring (200) and connecting rod (120)；Check ring
(200) when end face is not affixed with the end face of taper work end (110), the injecting hole (111) and molten plastic channel (121)
Connection.
3. screw in injection molding machine head assembly as claimed in claim 2, it is characterised in that：The injecting hole (111) is at least three,
And circular array is distributed centered on the axial line of taper work end (110).
4. screw in injection molding machine head assembly as claimed in claim 3, it is characterised in that：The injecting hole (111) is in for cross section
The hole of "U" shaped.
5. screw in injection molding machine head assembly as claimed in claim 2, it is characterised in that：The check ring (200) and connecting rod
(120) gap between is 6mm.
6. screw in injection molding machine head assembly as claimed in claim 5, it is characterised in that：The check ring (200) slides into end face
When being affixed with the end face of taper work end (110), between the end face that check ring (200) and thrust ring (300) correspond to each other
Gap is 3.5mm.
7. the screw in injection molding machine head assembly as described in claim 1,2,3,4,5 or 6, it is characterised in that：The connecting rod (120)
The taper shaft shoulder (122) is equipped with, one end that the taper shaft shoulder (122) is relatively large in diameter is towards threaded rod (130), the thrust ring
(300) it is set in the rod segment of the connecting rod (120) between the taper shaft shoulder (122) and threaded rod (130).
8. injection molding machine, it is characterised in that：Including screw in injection molding machine head assembly as claimed in any of claims 1 to 7 in one of claims.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721547961.XU CN207465809U (en) | 2017-11-17 | 2017-11-17 | Screw in injection molding machine head assembly and injection molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721547961.XU CN207465809U (en) | 2017-11-17 | 2017-11-17 | Screw in injection molding machine head assembly and injection molding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207465809U true CN207465809U (en) | 2018-06-08 |
Family
ID=62261454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721547961.XU Active CN207465809U (en) | 2017-11-17 | 2017-11-17 | Screw in injection molding machine head assembly and injection molding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207465809U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113799346A (en) * | 2021-08-04 | 2021-12-17 | 昆山又二贝精密机械有限公司 | Check type screw head assembly design and production process |
-
2017
- 2017-11-17 CN CN201721547961.XU patent/CN207465809U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113799346A (en) * | 2021-08-04 | 2021-12-17 | 昆山又二贝精密机械有限公司 | Check type screw head assembly design and production process |
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