CN220373841U - Injection molding screw structure - Google Patents
Injection molding screw structure Download PDFInfo
- Publication number
- CN220373841U CN220373841U CN202320748251.2U CN202320748251U CN220373841U CN 220373841 U CN220373841 U CN 220373841U CN 202320748251 U CN202320748251 U CN 202320748251U CN 220373841 U CN220373841 U CN 220373841U
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- CN
- China
- Prior art keywords
- cover plate
- sub
- hole
- connecting hole
- pivot hole
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- 238000001746 injection moulding Methods 0.000 title abstract description 14
- 238000010438 heat treatment Methods 0.000 claims abstract description 21
- 238000000465 moulding Methods 0.000 claims abstract description 5
- 239000004033 plastic Substances 0.000 claims abstract description 5
- 229920003023 plastic Polymers 0.000 claims abstract description 5
- 238000002347 injection Methods 0.000 claims description 11
- 239000007924 injection Substances 0.000 claims description 11
- 230000004323 axial length Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000001802 infusion Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010137 moulding (plastic) Methods 0.000 description 1
- 230000000149 penetrating effect Effects 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
Landscapes
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model discloses an injection molding screw structure, which comprises a screw body and a heating shell sleeved outside the screw body, wherein a cover plate is arranged at the tail end of the heating shell, a first pivot hole is formed in the center of the cover plate, a sub-cover plate can be overlapped on the cover plate, a second pivot hole is formed in the center of the sub-cover plate, and the inner diameter of the second pivot hole is smaller than that of the first pivot hole. For the screw rod body with large diameter, the sub-cover plate does not need to be overlapped and installed on the cover plate. For the screw rod body with small diameter, a sub-cover plate is required to be installed on the cover plate in a superposition mode, and the tail portion of the screw rod body with small diameter passes through the first pivot hole and then passes through the second pivot hole to be connected with the driving unit. The combination of this design apron and sub-apron can adapt to the screw rod main part of equidimension, same heating shell, through the screw rod main part of changing two kinds of sizes, obtains the screw rod of moulding plastics of two kinds of specifications.
Description
Technical Field
The utility model relates to an injection molding machine, in particular to an injection molding screw.
Background
The injection molding machine is a molding apparatus for molding thermoplastic or thermosetting plastic into plastic products of various shapes using a plastic molding die. Injection screw during the injection operation, molten plastic is transported along the injection screw and injected.
The injection molding screw comprises a screw body and a heating shell sleeved outside the screw body, wherein the screw body comprises a screw body and helical blades arranged on the screw body. In order to meet different injection molding requirements, such as the flow rate or the speed of infusion, the injection molding screw needs to adopt spiral blades with different sizes, the spiral blades with different sizes are matched with screw bodies with different sizes, and the screw bodies with different sizes are respectively matched with corresponding heating shells.
Disclosure of Invention
The technical problems solved by the utility model are as follows: how to make the screw rod main body of two different sizes can be used with same heating shell is supporting to practice thrift the quantity of heating shell.
In order to solve the technical problems, the utility model provides the following technical scheme: the utility model provides a screw rod structure of moulding plastics, includes screw rod main part and cover establishes at the outside heating shell of screw rod main part, and the apron is installed to heating shell's tail end, and first pin joint hole has been seted up to apron center department, can overlap sub-apron on the apron, and the second pin joint hole has been seted up to sub-apron's center department, and second pin joint hole internal diameter is less than first pin joint hole internal diameter.
The screw body comprises a screw body and a helical blade arranged on the screw body, a sub-cover plate does not need to be overlapped and installed on the cover plate for the large-diameter screw body, and the tail of the large-diameter screw body passes through the first pivot hole and is connected with the driving unit. Wherein, install the bearing between first pin joint hole and the screw rod body.
For the screw rod body with small diameter, a sub-cover plate is required to be installed on the cover plate in a superposition mode, and the tail portion of the screw rod body with small diameter passes through the first pivot hole and then passes through the second pivot hole to be connected with the driving unit. The first pin joint hole is in clearance fit with the screw body, and the bearing is arranged between the second pin joint hole and the screw body.
The injection molding screw structure, the combination of the cover plate and the sub-cover plate, disclosed by the utility model, can adapt to screw main bodies with different sizes, in particular to screw main bodies with different outer diameters, so that the number of heating shells is saved. The same heating shell is used for obtaining injection molding screws with two specifications by replacing screw bodies with two sizes.
An L-shaped locking block is welded on the cover plate, a relief groove is formed in the edge of the sub-cover plate, and the edge of the sub-cover plate can be clamped into the L-shaped locking block; the L-shaped locking block is provided with a first connecting hole, and the edge of the sub cover plate is provided with a second connecting hole which can be aligned with the first connecting hole. The sub-cover plate and the cover plate are in disc shapes, when the sub-cover plate and the cover plate are matched, the sub-cover plate is axially aligned with the cover plate, the L-shaped locking piece is axially aligned with the abdicating groove, the L-shaped locking piece is matched with the abdicating groove, the sub-cover plate is propped against the cover plate, then an operator rotates the sub-cover plate, the edge of the sub-cover plate is clamped into the L-shaped locking piece, and the sub-cover plate is primarily matched with the cover plate. And then, the bolts are matched into the first connecting holes and the second connecting holes, and the matched state of the sub cover plate and the cover plate is locked.
Compared with flange connection between the cover plate and the cover plate in the prior art, the L-shaped locking piece additionally provided by the utility model can enable the sub-cover plate and the cover plate to be primarily matched, the positions of the sub-cover plate and the cover plate are primarily fixed, and subsequent installation of bolts by operators is facilitated. The L-shaped locking block is additionally arranged, so that the connection between the cover plate and the sub-cover plate is more stable.
And a third connecting hole is formed in the cover plate and aligned with the first connecting hole. After penetrating through the first connecting hole and the second connecting hole on the sub-cover plate, the bolt is in threaded connection with the third connecting hole, and the bolt compresses the L-shaped locking piece and the sub-cover plate, so that the cover plate and the sub-cover plate are stably connected.
The number of the L-shaped locking blocks is three, and the three L-shaped locking blocks are uniformly distributed along the edge of the cover plate. Correspondingly, the number of the relief grooves on the sub cover plate is three.
The center department of apron is equipped with first convex part, and the center department of sub-apron offers the hole of stepping down, and first convex part cooperates with the hole of stepping down. The first pivot hole penetrates through the first convex part. The first protrusion not only facilitates assembly of the cover plate with the sub-cover plate and stable connection of the cover plate with the sub-cover plate, but also provides sufficient space for the bearing mounted in the first pivot hole.
The center of the sub-cover plate is provided with a second convex part, the second pivot hole penetrates through the second convex part, the second convex part prolongs the axial length of the second pivot hole, and enough space is provided for mounting the bearing.
The cover plate is provided with a fourth connecting hole, and the rear end face of the heating shell is provided with a fifth connecting hole aligned with the fourth connecting hole. The cover plate is fixedly arranged on the heating shell through bolts matched in the fourth connecting hole and the fifth connecting hole.
Drawings
The utility model is further described with reference to the accompanying drawings:
FIG. 1 is a schematic view of an injection molding screw structure in which the screw body of the screw body is a small diameter screw body;
FIG. 2 is an exploded view of FIG. 1;
FIG. 3 is a schematic view of the sub-deck of FIG. 2 mounted on a deck;
FIG. 4 is a schematic view of the sub-deck of FIG. 3 mounted on a deck;
FIG. 5 is a cross-sectional view of the injection screw structure of FIG. 1;
FIG. 6 is a schematic view of an injection molding screw structure in which the screw body of the screw body is a large diameter screw body;
FIG. 7 is an exploded view of FIG. 6;
fig. 8 is a cross-sectional view of the injection screw structure of fig. 6.
The symbols in the drawings illustrate:
10. a screw body; 11. a screw body; 12. a helical blade;
20. heating the housing; 21. a fifth connection hole;
30. a cover plate; 31. a first pivot hole; 32. an L-shaped locking piece; 320. a first connection hole; 33. a first convex portion; 34. a third connection hole; 35. a fourth connection hole;
40. a sub-cover plate; 401. a second connection hole; 41. a second pivot hole; 42. a relief groove; 43. a relief hole; 44. and a second convex portion.
Detailed Description
Referring to fig. 1 and 2, an injection molding screw structure comprises a screw main body 10 and a heating housing 20 sleeved outside the screw main body, wherein a cover plate 30 is mounted at the tail end of the heating housing, a first pivot hole 31 is formed in the center of the cover plate, a sub-cover plate 40 can be overlapped on the cover plate, a second pivot hole 41 is formed in the center of the sub-cover plate, and the inner diameter of the second pivot hole is smaller than that of the first pivot hole.
Referring to fig. 6 to 8, the screw body 10 includes a screw body 11 and a screw blade 12 provided on the screw body, and for a large-diameter screw body, there is no need to install a sub-cover 40 on the cover 30 in a superimposed manner, and the tail of the large-diameter screw body passes through the first pivot hole 31 to be connected with the driving unit. Wherein, a bearing is installed between the first pivot hole 31 and the screw body 11.
Referring to fig. 1 to 5, for the small-diameter screw body 11, a sub-cover 40 needs to be mounted on the cover 30 in a superimposed manner, and the tail of the small-diameter screw body passes through the first pivot hole 31 and then passes through the second pivot hole 41 to be connected with the driving unit. The first pivot hole 31 and the screw body 11 are not provided with bearings, and are in clearance fit, and the second pivot hole 41 and the screw body 11 are provided with bearings.
Referring to fig. 2 and 5, an L-shaped locking block 32 is welded on the cover plate 30, a relief groove 42 is formed in the edge of the sub-cover plate 40, and the edge of the sub-cover plate can be clamped into the L-shaped locking block; the L-shaped locking block is provided with a first connecting hole 320, and the edge of the sub-cover plate is provided with a second connecting hole 401 which can be aligned with the first connecting hole.
The sub-cover plate 40 and the cover plate 30 are disc-shaped, when the sub-cover plate 40 and the cover plate are matched, the sub-cover plate is axially aligned with the cover plate, the L-shaped locking block 32 is axially aligned with the giving way groove 42, the L-shaped locking block is matched with the giving way groove, the sub-cover plate 40 abuts against the cover plate 30, then an operator rotates the sub-cover plate 40, the edge of the sub-cover plate is clamped into the L-shaped locking block 32, and the sub-cover plate 40 is primarily matched with the cover plate 30. Thereafter, the bolts are fitted into the first and second coupling holes 320 and 401, locking the fitted state of the sub-cover 40 and the cover 30.
The cover plate 30 is provided with a third connecting hole 34 aligned with the first connecting hole 320. After passing through the first connecting hole 320 and the second connecting hole 401 on the sub-cover 40, the bolt is in threaded connection with the third connecting hole 34, and the bolt compresses the L-shaped locking piece 32 and the sub-cover 40, so that the cover 30 and the sub-cover 40 are stably connected.
The number of L-shaped locking tabs 32 is three, with the three L-shaped locking tabs being evenly distributed along the edge of the cover plate 30. Accordingly, the number of relief slots 42 on the sub-deck 40 is three. When the sub-cover plate 40 is matched with the cover plate 30, the three L-shaped locking blocks 32 are matched with the three giving-up grooves 42 in a one-to-one mode, then, an operator rotates the sub-cover plate 40 again to enable the edges of the sub-cover plate 40 to be clamped into the three L-shaped locking blocks 32, the first connecting holes 320, the second connecting holes 401 and the third connecting holes 34 are aligned, and then, the operator matches bolts into the first connecting holes 320, the second connecting holes 401 and the third connecting holes 34 to achieve connection of the sub-cover plate 40 and the cover plate 30.
The center of the cover plate 30 is provided with a first convex part 33, the center of the sub-cover plate 40 is provided with a yielding hole 43, and the first convex part is matched with the yielding hole. The first pivot hole 31 passes through the first protrusion 33. The first protrusion not only facilitates the assembly of the cover plate 30 with the sub-cover plate 40 and the stable connection of the cover plate with the sub-cover plate, but also provides sufficient space for the bearing installed in the first pivot hole 31.
A second protrusion 44 is provided at the center of the sub-cover 40. The second pivot hole 41 passes through the second protrusion 44, which extends the axial length of the second pivot hole, providing sufficient space for the installation of the bearing.
The cover plate 30 is provided with a fourth connection hole 35, and the rear end surface of the heating housing 20 is provided with a fifth connection hole 21 aligned with the fourth connection hole. The cover plate 30 is fixedly mounted on the heating housing 20 by bolts fitted in the fourth and fifth coupling holes 35 and 21.
The foregoing is merely illustrative of the preferred embodiments of the present utility model, and modifications in detail will readily occur to those skilled in the art based on the teachings herein without departing from the spirit and scope of the utility model.
Claims (7)
1. The utility model provides a screw rod structure of moulding plastics, includes screw rod main part (10) and cover establish at the outside heating shell (20) of screw rod main part, and apron (30) are installed to heating shell's tail end, and apron center department has seted up first pin joint hole (31), its characterized in that: the cover plate can be overlapped with a sub-cover plate (40), a second pivot hole (41) is formed in the center of the sub-cover plate, and the inner diameter of the second pivot hole is smaller than that of the first pivot hole.
2. An injection screw structure as claimed in claim 1, wherein: an L-shaped locking block (32) is welded on the cover plate (30), a relief groove (42) is formed in the edge of the sub-cover plate (40), and the edge of the sub-cover plate can be clamped into the L-shaped locking block; the L-shaped locking piece is provided with a first connecting hole (320), and the edge of the sub-cover plate is provided with a second connecting hole (401) which can be aligned with the first connecting hole.
3. An injection screw structure as claimed in claim 2, wherein: a third connecting hole (34) is formed in the cover plate (30), and the third connecting hole is aligned with the first connecting hole (320).
4. An injection screw structure as claimed in claim 2, wherein: the number of the L-shaped locking blocks (32) is three, and the three L-shaped locking blocks are uniformly distributed along the edge of the cover plate (30).
5. An injection screw structure as claimed in claim 1, wherein: the center of the cover plate (30) is provided with a first convex part (33), the center of the sub-cover plate (40) is provided with a yielding hole (43), and the first convex part is matched with the yielding hole.
6. An injection screw structure as claimed in claim 1, wherein: a second convex part (44) is arranged at the center of the sub cover plate (40).
7. An injection screw structure as claimed in claim 1, wherein: a fourth connecting hole (35) is formed in the cover plate (30), and a fifth connecting hole (21) aligned with the fourth connecting hole is formed in the rear end face of the heating shell (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320748251.2U CN220373841U (en) | 2023-04-07 | 2023-04-07 | Injection molding screw structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320748251.2U CN220373841U (en) | 2023-04-07 | 2023-04-07 | Injection molding screw structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220373841U true CN220373841U (en) | 2024-01-23 |
Family
ID=89561054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320748251.2U Active CN220373841U (en) | 2023-04-07 | 2023-04-07 | Injection molding screw structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220373841U (en) |
-
2023
- 2023-04-07 CN CN202320748251.2U patent/CN220373841U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |