CN211009812U - Worm and mould thereof - Google Patents
Worm and mould thereof Download PDFInfo
- Publication number
- CN211009812U CN211009812U CN201921560725.0U CN201921560725U CN211009812U CN 211009812 U CN211009812 U CN 211009812U CN 201921560725 U CN201921560725 U CN 201921560725U CN 211009812 U CN211009812 U CN 211009812U
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- CN
- China
- Prior art keywords
- worm
- core
- spiral
- mold
- connecting shaft
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- 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
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- 238000000465 moulding Methods 0.000 claims abstract description 25
- 230000005540 biological transmission Effects 0.000 claims description 5
- 229920006351 engineering plastic Polymers 0.000 claims description 3
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims 1
- 235000017491 Bambusa tulda Nutrition 0.000 claims 1
- 241001330002 Bambuseae Species 0.000 claims 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims 1
- 239000011425 bamboo Substances 0.000 claims 1
- 238000005336 cracking Methods 0.000 abstract description 4
- 238000007789 sealing Methods 0.000 description 18
- 229920003023 plastic Polymers 0.000 description 10
- 239000004033 plastic Substances 0.000 description 10
- 238000001746 injection moulding Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000012634 fragment Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Images
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- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The utility model belongs to the field of mechanical parts, in particular to a worm and a mold thereof, which comprises a worm and a connecting shaft, wherein the worm comprises an intermediate part and a spiral part, two symmetrically arranged limiting holes are arranged on the connecting shaft, the intermediate part and the spiral part are all of hollow structures, and the worm comprises a forming mechanism and a core molding mechanism, and the forming mechanism comprises an upper mold and a lower mold; when the worm rotates, rubs and heats up, the spiral part volume of the worm increases, because the middle part and the spiral part of the worm are both hollow structures, the expansion stress of the spiral part of the worm can extrude to the hollow part, the stress of the outer side wall of the spiral part of the worm is reduced, the cracking and even breaking caused by the higher stress of the outer side wall of the spiral part of the worm can be effectively prevented, the core mechanism in the worm mold can rotate and slide to the outside, after the worm is cast and cooled, the core mechanism can rotate and slide to the outside, and the middle part and the spiral part of the worm form a hollow structure.
Description
Technical Field
The utility model relates to a machine parts field specifically is a worm and mould thereof.
Background
The worm refers to a gear which has one or more spiral teeth and is meshed with a worm wheel to form a staggered shaft gear pair. The indexing curved surface can be a cylindrical surface, a conical surface or a circular ring surface, and has four categories of an Archimedes worm, an involute worm, a normal straight profile worm and a conical surface enveloping cylindrical worm, and the plastic part has the excellent performances of light weight, high strength, low running noise, good self-lubricating performance and the like, so the plastic part is widely applied to the field of machinery, and the worm made of plastic is widely applied to small-sized mechanical equipment.
Chinese patent publication No. CN203189669U discloses a worm and a mold therefor, which can ensure that the end of the worm does not generate flash when the worm is formed, and the worm does not generate part fragments due to the breakage of the flash when working, so that the fragments enter the transmission chain to cause the transmission failure, and generate abnormal sound or jamming, but the spiral part is a solid structure, when the worm rotates in contact with the turbine for a long time, the contact part generates heat due to friction, and is affected by thermal expansion and cold contraction, the internal stress of the spiral part increases, and the internal stress of the spiral part increases due to the solid structure, and the continuous rotation friction can cause the spiral part to break or even break, so that the worm cannot be used normally. Accordingly, one skilled in the art provides a worm and a mold therefor to solve the problems set forth in the background art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a worm and mould thereof to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides a worm, includes worm and connecting axle, the worm includes intermediate part and spiral portion, set up two symmetrical arrangement's spacing hole on the connecting axle, the connecting axle the intermediate part with spiral portion is hollow structure.
As a further aspect of the present invention: one end of the spiral part, which is far away from the connecting shaft, is in an open shape.
As a further aspect of the present invention: the worm and the connecting shaft are both made of engineering plastics.
A worm mould is used for forming the worm and the connecting shaft in the scheme and comprises a forming mechanism and a core forming mechanism, wherein the forming mechanism comprises an upper mould and a lower mould, forming cavities corresponding to the shapes of the worm and the connecting shaft are respectively arranged on the upper mould and the lower mould, a through groove is respectively arranged on one side of the upper mould and one side of the lower mould, two sliding grooves are symmetrically arranged on the lower mould, the core forming mechanism comprises two sliding rods which are symmetrically arranged, the two sliding rods respectively slide in the sliding grooves, a connecting plate is fixedly connected between the two sliding rods, one end of each sliding rod, close to the connecting plate, is fixedly connected with a stepping motor through a fixing plate, the stepping motor is electrically connected with an external power supply, the output end of the stepping motor is fixedly connected with a sealing roller, and the other end of the sealing roller is fixedly connected with a spiral core, the other end of the spiral mold core is fixedly connected with a straight cylinder mold core, and the sealing roller corresponds to the passing groove.
As a further aspect of the present invention: the size of the spiral core is matched with the internal sizes of the middle part and the spiral part, and the size of the straight cylinder core is matched with the internal size of the connecting shaft.
As a further aspect of the present invention: and the upper die and the lower die are integrally formed with convex columns corresponding to the limiting holes.
As a further aspect of the present invention: the bottom surface fixedly connected with stock cylinder of lower mould, the output fixedly connected with push pedal of stock cylinder, the push pedal is located the right side of connecting plate, the stock cylinder is connected with the transmission of outside air supply.
Compared with the prior art, the beneficial effects of the utility model are that:
when the worm rotates, rubs and heats up, the spiral part volume of the worm increases, because the middle part and the spiral part of the worm are both hollow structures, the expansion stress of the spiral part of the worm can extrude to the hollow part, the stress of the outer side wall of the spiral part of the worm is reduced, the cracking and even breaking caused by the higher stress of the outer side wall of the spiral part of the worm can be effectively prevented, the running stability of the worm is improved, the core molding mechanism in the worm mold can rotate and slide outwards, after the worm is cast and cooled, the core molding mechanism can slide outwards in a rotating way, and the middle part and the spiral part of the worm form a hollow structure.
Drawings
FIG. 1 is a schematic view of a worm and its mold;
FIG. 2 is another schematic view of a worm and its mold;
FIG. 3 is a schematic view of a worm and its structure in a mold;
FIG. 4 is a schematic view of a worm and its helical core configuration in a mold;
fig. 5 is a schematic view of a worm and a convex column structure in a mold thereof.
In the figure: 1. a worm; 11. a connecting shaft; 111. a limiting hole; 12. an intermediate portion; 13. a spiral portion; 2. a molding mechanism; 201. a molding cavity; 202. passing through the slot; 21. an upper die; 22. a lower die; 221. a chute; 23. a convex column; 3. a core molding mechanism; 31. a slide bar; 311. a fixing plate; 312. a connecting plate; 32. a stepping motor; 33. a sealing roller; 34. a helical core; 341. a straight barrel core; 4. a long rod cylinder; 41. a push plate.
Detailed Description
Referring to fig. 1 to 5, in an embodiment of the present invention, a worm includes a worm 1 and a connecting shaft 11, the worm 1 includes a middle portion 12 and a spiral portion 13, two symmetrically disposed limiting holes 111 are disposed on the connecting shaft 11, and the connecting shaft 11, the middle portion 12 and the spiral portion 13 are all hollow structures.
A worm mould is used for forming a worm 1 and a connecting shaft 11 in the scheme, and comprises a forming mechanism 2 and a core forming mechanism 3, wherein the forming mechanism 2 comprises an upper mould 21 and a lower mould 22, the upper mould 21 and the lower mould 22 are respectively provided with a forming cavity 201 corresponding to the shapes of the worm 1 and the connecting shaft 11, one sides of the upper mould 21 and the lower mould 22 are respectively provided with a through groove 202, the lower mould 22 is provided with two symmetrically arranged sliding grooves 221, the core forming mechanism 3 comprises two symmetrically arranged sliding rods 31, the two sliding rods 31 respectively slide in the sliding grooves 221, a connecting plate 312 is fixedly connected between the two sliding rods 31, one end of each sliding rod 31, close to the connecting plate 312, is fixedly connected with a stepping motor 32 through a fixing plate 311, the stepping motor 32 is electrically connected with an external power supply, the output end of the stepping motor 32 is fixedly connected with a sealing roller 33, and the, the straight cylindrical core 341 is fixedly attached to the other end of the spiral core 34, and the seal roller 33 corresponds to the passing groove 202.
In fig. 1 and 2: the worm comprises a worm 1 and a connecting shaft 11, and comprises a forming mechanism 2 and a core forming mechanism 3, wherein the forming mechanism 2 comprises an upper die 21 and a lower die 22, the upper die 21 and the lower die 22 are respectively provided with a forming cavity 201 corresponding to the shapes of the worm 1 and the connecting shaft 11, one side of the upper die 21 and one side of the lower die 22 are respectively provided with a through groove 202, the lower die 22 is provided with two symmetrically arranged sliding grooves 221, the core forming mechanism 3 comprises two symmetrically arranged sliding rods 31, the two sliding rods 31 respectively slide in the sliding grooves 221, a connecting plate 312 is fixedly connected between the two sliding rods 31, one end of each sliding rod 31 close to the connecting plate 312 is fixedly connected with a stepping motor 32 through a fixing plate 311, the stepping motor 32 is electrically connected with an external power supply, the output end of the stepping motor 32 is fixedly connected with a sealing roller 33, the other end of the sealing roller 33 is fixedly, the sealing roller 33 corresponds to the through groove 202, when in use, the upper die 21 and the lower die 22 are tightly attached, the core mechanism 3 is pushed into the forming mechanism 2, so that the spiral core 34 and the straight cylinder core 341 are positioned in the forming cavity 201, the sealing roller 33 is positioned in the through groove 202, the inner side end surface of the sealing roller 33 is flush with the end surface of the forming cavity 201 close to one side of the sealing roller 33, at the moment, the injection molding machine injects molten plastic into the forming cavity 201, the molten plastic is cooled and formed, the worm 1 and the connecting shaft 11 are formed under the action of the forming cavity 201, the spiral core 34 and the straight cylinder core 341, then the stepping motor 32 drives the sealing roller 33, the spiral core 34 and the straight cylinder core 341 to rotate, the sealing roller 33, the spiral core 34, the straight cylinder core 341 and the stepping motor 32 slide out of the forming mechanism 2 while rotating under the action of the spiral force, and when the stepping motor 32 slides out, the two slide bars 31 can limit the position of the stepping motor 32, prevent the stepping motor from rotating, guide and support the sliding, after the core mechanism 3 has slipped out, the upper and lower dies 21, 22 can be opened and the worm 1 and the connecting shaft 11 can be removed, at which time, the connecting shaft 11, the middle part 12 and the spiral part 13 are all hollow structures, the bottom surface of the lower die 22 is fixedly connected with a long rod cylinder 4, the output end of the long rod cylinder 4 is fixedly connected with a push plate 41, the push plate 41 is positioned at the right side of the connecting plate 312, the long rod cylinder 4 is in transmission connection with an external air source, during production, the long rod cylinder 4 pushes the core molding mechanism 3 into the molding mechanism 2 through the push plate 41, after production is finished, the push plate 41 of the long rod air cylinder 4 extends to the farthest end, so that interference on sliding of the core forming mechanism 3 is avoided, the model of the stepping motor 32 is 24BYJ48, and the model of the long rod air cylinder 4 is MA 40-100.
In fig. 3 and 4: the worm comprises a worm 1 and a connecting shaft 11, wherein the worm 1 comprises a middle part 12 and a spiral part 13, two limit holes 111 which are symmetrically arranged are formed in the connecting shaft 11, the middle part 12 and the spiral part 13 are all of a hollow structure, one end, far away from the connecting shaft 11, of the spiral part 13 is in an open shape, the worm 1 and the connecting shaft 11 are both made of engineering plastics, when the worm 1 rotates, rubs and heats up, the volume of the spiral part 13 of the worm 1 is increased, the middle part 12 and the spiral part 13 of the worm 1 are both of a hollow structure, the expansion stress of the spiral part 13 of the worm 1 can be extruded to the hollow part, the stress of the outer side wall of the spiral part 13 of the worm 1 is reduced, the cracking and even breaking caused by the higher stress of the outer side wall of the spiral part 13 of the worm 1 are effectively prevented, the running stability of the worm 1 is improved, the size of, the injection molding machine injects the melted plastic into the molding cavity 201, the melted plastic is cooled and molded, the worm 1 and the connecting shaft 11 are molded under the action of the molding cavity 201, the spiral core 34 and the straight cylinder core 341,
in fig. 5: the upper die 21 and the lower die 22 are integrally formed with convex columns 23 corresponding to the limiting holes 111, the injection molding machine injects molten plastic into the molding cavity 201, the connecting shaft 11 can form the limiting holes 111 under the action of the molding cavity 201, the straight cylinder core 341 and the convex columns 23, the worm 1 and the connecting shaft 11 can be connected with other parts through the limiting holes 111, and meanwhile, when the core molding mechanism 3 rotates and slides out, the worm 1 and the connecting shaft 11 can be limited under the action of the convex columns 23 and the limiting holes 111 to prevent the worm 1 and the connecting shaft 11 from rotating and deforming.
The utility model discloses a theory of operation is: when the injection molding machine is used, the upper die 21 and the lower die 22 are tightly attached, the core mechanism 3 is pushed into the molding mechanism 2, so that the spiral core 34 and the straight cylinder core 341 are positioned in the molding cavity 201, the sealing roller 33 is positioned in the through groove 202, the end surface of the inner side of the sealing roller 33 is flush with the end surface of one side, close to the sealing roller 33, of the molding cavity 201, at the moment, the injection molding machine injects molten plastic into the molding cavity 201, the molten plastic is cooled and molded, the worm 1 and the connecting shaft 11 are molded under the action of the molding cavity 201, the spiral core 34 and the straight cylinder core 341, then the stepping motor 32 drives the sealing roller 33, the spiral core 34 and the straight cylinder core 341 to rotate, the sealing roller 33, the spiral core 34, the straight cylinder core 341 and the stepping motor 32 slide out of the molding mechanism 2 while rotating under the action of the spiral force, and the two sliding rods 31 can limit the stepping motor 32 when the stepping motor slides out, the self-rotation of the mold core mechanism is prevented, the sliding can be guided and supported, after the mold core mechanism 3 slides out, the upper mold 21 and the lower mold 22 can be opened, the worm 1 and the connecting shaft 11 are taken out, at the moment, the connecting shaft 11, the middle part 12 and the spiral part 13 are all of hollow structures, when the worm 1 rotates, rubs and heats up, the volume of the spiral part 13 of the worm 1 is increased, because the middle part 12 and the spiral part 13 of the worm 1 are both of hollow structures, the expansion stress of the spiral part 13 of the worm 1 can be extruded to the hollow part, the stress of the outer side wall of the spiral part 13 of the worm 1 is reduced, the cracking and even breaking caused by the higher stress of the outer side wall of the spiral part 13 of the worm 1 are effectively prevented, the running stability of the worm 1 is improved, the long rod cylinder 4 is fixedly connected to the bottom surface of the lower mold 22, the output end of the long rod, during production, the long rod cylinder 4 pushes the core forming mechanism 3 into the forming mechanism 2 through the push plate 41, and after production is finished, the push plate 41 of the long rod cylinder 4 extends out to the farthest end, so that interference on sliding of the core forming mechanism 3 cannot be caused.
The above-mentioned, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (7)
1. The utility model provides a worm, includes worm (1) and connecting axle (11), worm (1) includes intermediate part (12) and spiral portion (13), its characterized in that, two symmetrical arrangement's spacing hole (111) are seted up on connecting axle (11), connecting axle (11) intermediate part (12) with spiral portion (13) are hollow structure.
2. A worm according to claim 1, characterised in that the end of the spiral (13) remote from the connecting shaft (11) is open.
3. A worm according to claim 1, characterised in that the worm (1) and the connecting shaft (11) are both of engineering plastic.
4. A worm mold for molding the worm (1) and the connecting shaft (11) in claim 1, comprising a molding mechanism (2) and a core molding mechanism (3), wherein the molding mechanism (2) comprises an upper mold (21) and a lower mold (22), and is characterized in that the upper mold (21) and the lower mold (22) are both provided with molding cavities (201) corresponding to the shapes of the worm (1) and the connecting shaft (11), one sides of the upper mold (21) and the lower mold (22) are both provided with a through groove (202), the lower mold (22) is provided with two symmetrically arranged sliding grooves (221), the core molding mechanism (3) comprises two symmetrically arranged sliding rods (31), the two sliding rods (31) respectively slide in the sliding grooves (221), and a connecting plate (312) is fixedly connected between the two sliding rods (31), the utility model discloses a spiral core type roller, including slide bar (31), fixed plate (311) fixedly connected with step motor (32) is passed through to the one end that is close to on slide bar (31) connecting plate (312), step motor (32) and external power source electric connection, the output fixedly connected with of step motor (32) seals roller (33), the other end fixedly connected with spiral core (34) of sealed roller (33), the other end fixedly connected with straight section of thick bamboo core (341) of spiral core (34), sealed roller (33) with it is corresponding through groove (202).
5. The worm screw die according to claim 4, characterised in that the helical core (34) has dimensions corresponding to the internal dimensions of the intermediate portion (12) and the helical portion (13), and in that the straight cylindrical core (341) has dimensions corresponding to the internal dimensions of the connecting shaft (11).
6. The worm mold according to claim 4, characterized in that the upper mold (21) and the lower mold (22) are integrally formed with a boss (23) corresponding to the limiting hole (111).
7. The worm mold according to claim 4, characterized in that a long rod cylinder (4) is fixedly connected to the bottom surface of the lower mold (22), a push plate (41) is fixedly connected to the output end of the long rod cylinder (4), the push plate (41) is located on the right side of the connecting plate (312), and the long rod cylinder (4) is in transmission connection with an external air source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921560725.0U CN211009812U (en) | 2019-09-19 | 2019-09-19 | Worm and mould thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921560725.0U CN211009812U (en) | 2019-09-19 | 2019-09-19 | Worm and mould thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211009812U true CN211009812U (en) | 2020-07-14 |
Family
ID=71474860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921560725.0U Expired - Fee Related CN211009812U (en) | 2019-09-19 | 2019-09-19 | Worm and mould thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211009812U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113001891A (en) * | 2021-02-09 | 2021-06-22 | 莱克电气股份有限公司 | Injection mold and manufacturing method of rotating body |
-
2019
- 2019-09-19 CN CN201921560725.0U patent/CN211009812U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113001891A (en) * | 2021-02-09 | 2021-06-22 | 莱克电气股份有限公司 | Injection mold and manufacturing method of rotating body |
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| 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: 20200714 |