CN219994128U - Rotational molding product with reinforced screw - Google Patents
Rotational molding product with reinforced screw Download PDFInfo
- Publication number
- CN219994128U CN219994128U CN202321559071.6U CN202321559071U CN219994128U CN 219994128 U CN219994128 U CN 219994128U CN 202321559071 U CN202321559071 U CN 202321559071U CN 219994128 U CN219994128 U CN 219994128U
- Authority
- CN
- China
- Prior art keywords
- screw
- metal screw
- rotational molding
- metal
- thread
- 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.)
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Links
- 238000001175 rotational moulding Methods 0.000 title claims abstract description 37
- 239000002184 metal Substances 0.000 claims abstract description 64
- 229920003023 plastic Polymers 0.000 claims abstract description 24
- 239000004033 plastic Substances 0.000 claims abstract description 24
- 238000005096 rolling process Methods 0.000 claims abstract description 5
- 230000000903 blocking effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 3
- 230000007547 defect Effects 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000013505 freshwater Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000010137 moulding (plastic) Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The utility model relates to the technical field of rotational molding, in particular to a rotational molding product with a reinforced screw, which comprises a plastic rotational molding body, wherein a metal screw is partially arranged in the plastic rotational molding body, an inner screw thread is arranged on the inner wall of the metal screw, and compared with the prior art, an outer screw thread is arranged on the outer wall of the metal screw, and the screw direction of the outer screw thread is opposite to that of the inner screw thread. Compared with the prior art, the external thread is arranged on the outer wall of the metal screw, so that the bonding strength between the metal screw and the plastic rolling body is improved, and looseness in the process of multiple disassembly and assembly is avoided.
Description
Technical Field
The utility model relates to the technical field of rotational molding, in particular to a rotational molding product with a reinforced screw.
Background
Rotational moulding is an important processing method for plastic articles, and is particularly advantageous in terms of hollow moulding. Rotational molding is also called rotational molding, etc., and English is Rotational Moulding. At present, the raw material of rotational molding is plastic, the rotational molding process is to add plastic raw material into a mold in the form of powder, then continuously rotate the mold and heat the mold, at this time, the plastic raw material in the mold is gradually and evenly melt-coated on the whole surface of a mold cavity under the action of gravity and heat energy, then the mold is cooled, and the plastic product after demolding is the rotational molding product.
The rotational molding product is used as a sea water culture platform for fresh water storage tanks in some application occasions, and metal screw openings are needed to be pre-buried in the rotational molding product for fixing, but the existing metal screw openings have certain technical defects, such as easy loosening of the metal screw openings after multiple disassembly and assembly, the end surfaces of the metal screw openings are exposed on the surface of the rotational molding product, and the metal screw openings are easy to rust under the action of salt mist.
Disclosure of Invention
In order to overcome the technical defects or one of the technical defects in the prior art, the utility model provides a rotational molding product with a reinforced screw, which adopts the following technical scheme:
a rotational molding product with reinforced screw holes comprises a plastic rotational molding body, wherein a metal screw hole is partially arranged in the plastic rotational molding body, an inner screw thread is arranged on the inner wall of the metal screw hole, and compared with the prior art, an outer screw thread is arranged on the outer wall of the metal screw hole, and the screw direction of the outer screw thread is opposite to that of the inner screw thread.
Further, the plastic rolling body corresponding to the outer end face of the metal screw is extended inwards to form an annular body, and the annular body covers the outer end face of the metal screw and is fixedly connected with the outer end face of the metal screw into a whole so as to prevent the outer end face of the metal screw from being exposed to the outside.
Further, the inner diameter of the annular body is equal to the inner diameter of the metal screw.
Further, the inner wall of the annular body is provided with an annular body thread which is consistent with the internal thread tooth, the thread pitch and the lead of the metal screw.
Further, when the metal screw is pre-buried in the rotational molding die, the metal screw is in threaded connection with the plug, the outer diameter of the plug is equal to the inner diameter of the metal screw, the outer wall of the plug is provided with a plug screw section in threaded connection with the internal thread, and the outer end face of the plug is provided with an inner hexagonal dismounting hole.
Further, the metal screw has a bottom plate for blocking the bottom opening thereof.
Compared with the prior art, the external thread is arranged on the outer wall of the metal screw, so that the bonding strength between the metal screw and the plastic rolling body is improved, and looseness in the process of multiple disassembly and assembly is avoided.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is a schematic structural view of the metal screw and plug of the present utility model.
Fig. 3 is a schematic view of the structure of the metal screw, plug and plastic molding body immediately after rotational molding is completed.
Fig. 4 is a schematic view of the structure of fig. 3 after unscrewing the plug.
Description of the embodiments
The utility model will be further illustrated with reference to specific examples.
The rotational molding product with the reinforced screw holes shown in the figures 1-4 comprises a plastic rotational molding body 1, wherein a metal screw hole 2 is partially arranged in the plastic rotational molding body 1, an inner screw thread 21 is arranged on the inner wall of the metal screw hole 2, an outer screw thread 22 is arranged on the outer wall of the metal screw hole 2, and the screw direction of the outer screw thread is opposite to that of the inner screw thread. The metal screw 2 has a bottom plate 23 for closing its bottom end opening.
In another preferred embodiment, the plastic rolling body 1 corresponding to the outer end surface of the metal screw 2 extends inwards to form a ring body 11, and the ring body 11 covers the outer end surface of the metal screw 2 and is fixedly connected with the outer end surface of the metal screw 2 into a whole. The inner diameter of the annular body 11 is equal to the inner diameter of the metal screw 2. The inner wall of the annular body 11 is provided with an annular body thread which is consistent with the internal thread 21 of the metal screw 2 in tooth, pitch and lead.
As shown in fig. 2, when the metal screw 2 is pre-buried in the rotational molding die, the metal screw 2 is screwed with the plug 3, the outer diameter of the plug 3 is equal to the inner diameter of the metal screw 2, the outer wall of the plug 3 is provided with a plug screw section 31 screwed with the internal thread 21, and in this embodiment, the upper end of the plug screw section 31 is higher than the upper surface of the plastic rotational molding body 1 after rotational molding is completed. The outer end surface of the plug 3 is provided with an inner hexagonal disassembly hole 32. In this way, during rotational moulding, the plastic liquid does not enter the inner cavity of the metal screw 2. After rotational molding is completed and cooled, the plug 3 is rotated by the internal hexagonal wrench to be removed from the metal screw 2, so that the upper end opening of the metal screw 2 is exposed for screwing the fixing piece, and after the plug 3 is removed from the metal screw 2, the inner wall of the annular body 11 naturally forms an annular body thread consistent with the internal thread 21 tooth type, the thread pitch and the thread lead of the metal screw 2.
Through set up the external screw thread at the outer wall of metal screw, improved the area of contact between metal screw and the plastics roll the plastic body, nested each other improves joint strength, the screw direction of external screw thread is opposite with the screw direction of internal screw thread simultaneously, with the mounting of metal screw spiro union be in anticlockwise rotation or clockwise rotation from the center, plastics roll the plastic body all provide a reverse radial friction power of metal screw to avoid taking place not hard up in many times dismouting in-process. The annular body 11 covers the outer end face of the metal screw 2 and is fixedly connected with the outer end face of the metal screw 2 into a whole so as to prevent the outer end face of the metal screw 2 from being exposed to the outside and prevent the metal screw 2 from being easy to rust under the action of salt mist.
The present utility model is not described in detail in the prior art or common general knowledge.
Claims (6)
1. The rotational molding product with the reinforced screw opening comprises a plastic rotational molding body (1), wherein a metal screw opening (2) is partially arranged in the plastic rotational molding body (1), and an inner thread (21) is arranged on the inner wall of the metal screw opening (2), and the rotational molding product is characterized in that: an external thread (22) is arranged on the outer wall of the metal screw (2), and the screw direction of the external thread is opposite to that of the internal thread.
2. A rotomolded article with an enhanced screw, according to claim 1, wherein: the plastic rolling body (1) corresponding to the outer end surface of the metal screw (2) extends inwards to form an annular body (11), and the annular body (11) covers the outer end surface of the metal screw (2) and is fixedly connected with the outer end surface of the metal screw (2) into a whole.
3. A rotomoulded article with enhanced screw according to claim 2, wherein: the inner diameter of the annular body (11) is equal to the inner diameter of the metal screw (2).
4. A rotomoulded article with enhanced screw according to claim 2, wherein: the inner wall of the annular body (11) is provided with annular body threads consistent with the teeth, the thread pitch and the lead of the internal thread (21) of the metal screw (2).
5. A rotomolded article with an enhanced screw, according to claim 1, wherein: when the metal screw (2) is pre-buried in the rotational molding die, the metal screw (2) is in threaded connection with the plug (3), the outer diameter of the plug (3) is equal to the inner diameter of the metal screw (2), the outer wall of the plug (3) is provided with a plug screw section (31) in threaded connection with the internal thread (21), and the outer end face of the plug (3) is provided with an inner hexagonal disassembly hole (32).
6. A rotomolded article with an enhanced screw, according to claim 1, wherein: the metal screw (2) is provided with a bottom plate (23) for blocking the bottom end opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321559071.6U CN219994128U (en) | 2023-06-19 | 2023-06-19 | Rotational molding product with reinforced screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321559071.6U CN219994128U (en) | 2023-06-19 | 2023-06-19 | Rotational molding product with reinforced screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219994128U true CN219994128U (en) | 2023-11-10 |
Family
ID=88603772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321559071.6U Active CN219994128U (en) | 2023-06-19 | 2023-06-19 | Rotational molding product with reinforced screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219994128U (en) |
-
2023
- 2023-06-19 CN CN202321559071.6U patent/CN219994128U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |