CN110605819A - Linear actuation forced rotation is from type structure - Google Patents
Linear actuation forced rotation is from type structure Download PDFInfo
- Publication number
- CN110605819A CN110605819A CN201910863516.1A CN201910863516A CN110605819A CN 110605819 A CN110605819 A CN 110605819A CN 201910863516 A CN201910863516 A CN 201910863516A CN 110605819 A CN110605819 A CN 110605819A
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- China
- Prior art keywords
- movable shaft
- spiral
- fixed sleeve
- shaft
- sleeve
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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.)
- Pending
Links
- 238000002347 injection Methods 0.000 claims abstract description 16
- 239000007924 injection Substances 0.000 claims abstract description 16
- 239000003921 oil Substances 0.000 claims description 8
- 239000010687 lubricating oil Substances 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/2618—Moulds having screw-threaded mould walls
- B29C45/262—Moulds having screw-threaded mould walls provided with unscrewing drive means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2001/00—Articles provided with screw threads
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a linear-actuating forced rotating release structure which is arranged on an injection mold and comprises a fixed sleeve, wherein an axial through hole is formed in the fixed sleeve, a movable shaft capable of rotating and axially moving relative to the fixed sleeve penetrates through the axial through hole, a spiral guide structure is arranged between the fixed sleeve and the movable shaft so that the movable shaft can rotate relative to one side of the fixed sleeve and axially move relative to the fixed sleeve when being subjected to axial force, a core part is arranged at one end of the movable shaft, when the movable shaft axially moves relative to the fixed sleeve, the core part is inserted into or withdrawn from a cavity of the injection mold, a spiral structure is arranged on the outer side wall of the core part, and the lead of the spiral structure is equal to that of the spiral. When the plastic product is used on an injection mold, the plastic product with holes and the wall of the hole provided with the spiral structure can be formed at one time, the working efficiency is high, and the product quality is good.
Description
Technical Field
The invention relates to the technical field of injection molds, in particular to a linear-actuation stressed rotary release structure.
Background
The mold opening process of the plastic product parts and the problems of misalignment between the mold structure and the plastic product structure, which cause the plastic product to be incapable of opening the mold for mold design and further form a technical bottleneck seal ring.
For example, for some plastic products with holes and having spiral structures on the hole walls, the prior art generally adopts the following method to mold, which includes first injection molding the main structure of the plastic product, forming a smooth hole on the plastic product, then processing the hole walls of the plastic product, and processing spiral structures such as spiral grooves or spiral ribs on the hole walls. The whole production process needs two steps to be finished, and the production efficiency is low.
The invention provides a linear-motion stressed rotary release structure on a mold, which solves the problems that a plastic product part needs to be opened for mold design and is researched and developed in a targeted manner.
Disclosure of Invention
In view of the above, the present invention provides a linear-acting forced-rotation release structure, which can be used in an injection mold to mold a plastic product with a hole and a spiral structure on a hole wall.
The technical scheme adopted by the invention for solving the technical problem is as follows:
the utility model provides a straight line actuates atress rotation and leaves type structure, its installs on injection mold, and it is including fixed cover, axial through hole has in the fixed cover, run through in the axial through hole and be provided with the loose axle that can fixed cover relatively rotate and axial displacement, be provided with spiral guide structure between fixed cover and the loose axle so that the loose axle can rotate axial displacement on one side for fixed cover during the axial force, the one end of loose axle is provided with type core portion, during the fixed cover axial displacement of loose axle relatively, type core portion inserts or withdraws from injection mold's die cavity, be provided with helical structure on type core portion's the lateral wall, helical structure's helical pitch with helical guide structure's helical guide equals.
In an embodiment of the present invention, the spiral guide structure includes a first spiral groove disposed on an outer side wall of the movable shaft, a second spiral groove disposed on an inner side wall of the fixed sleeve, and a ball disposed between the first spiral groove and the second spiral groove, and a lead of the first spiral groove is equal to a lead of the second spiral groove.
In an embodiment of the present invention, the spiral guide structure further includes a spiral guide groove disposed on an inner side wall of the fixed sleeve, and a spiral guide rib disposed on an outer side wall of the movable shaft and engaged with the spiral guide groove, and the lead of the spiral guide rib, the spiral guide groove, the first spiral groove, and the second spiral groove are all equal.
In an embodiment of the present invention, the movable shaft has a clearance fit section in clearance fit with the fixed sleeve, the spiral guide rib is disposed in the clearance fit section, the spiral guide rib and the spiral guide groove are in clearance fit, and the fixed sleeve is provided with an oil guide groove capable of introducing lubricating oil into a clearance between the clearance fit section and the fixed sleeve.
In an embodiment of the present invention, a limiting structure is disposed between the movable shaft and the fixed sleeve to limit a maximum distance that the core portion protrudes from the fixed sleeve.
In an embodiment of the present invention, the movable shaft is a stepped shaft, the axial through hole is a stepped hole, and the limiting structure includes a first stepped surface located in the stepped hole and a second stepped surface located on the stepped shaft and capable of abutting against the first stepped surface.
In an embodiment of the present invention, the movable shaft is sleeved with a limiting disc capable of abutting against other components on the injection mold to limit the axial movement of the movable shaft.
In an embodiment of the present invention, the limiting plate is connected to the movable shaft through a pin.
In an embodiment of the invention, a shaft sleeve capable of rotating relative to the movable shaft is sleeved on the other end of the movable shaft, which is opposite to the core part, a wear-resistant sleeve is further sleeved on the movable shaft and positioned between the shaft sleeve and the movable shaft, the wear-resistant sleeve is tightly matched with the movable shaft, and the wear-resistant sleeve is in rotating fit with the shaft sleeve.
In an embodiment of the present invention, the movable shaft includes a first shaft core member and a second shaft core member, one end of the first shaft core member is detachably connected to one end of the second shaft core member, the core portion is disposed at the other end of the first shaft core member, and the first spiral groove is disposed on an outer side wall of the first shaft core member.
The invention has the beneficial effects that: according to the invention, a hole can be formed on a plastic product through the core part, and a spiral groove or convex rib structure is formed on the wall of the hole, when the mold is opened, the movable shaft axially moves along the spiral guide structure and rotatably exits from the cavity, so that the completeness and quality of the product can be ensured to meet the requirements, a complex structure can be formed only through one-time injection molding, and the working efficiency is improved.
Drawings
FIG. 1 is a cross-sectional view of the present invention;
FIG. 2 is an exploded view of the present invention;
FIG. 3 is a cross-sectional view of the exploded state of the present invention;
fig. 4 is a partially enlarged view of a portion a in fig. 2;
fig. 5 is a partially enlarged view of a portion B in fig. 3.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.
Referring to fig. 1 to 5, the present invention provides a linear actuation forced rotation release structure, which is installed on an injection mold (not shown), the device comprises a fixed sleeve 1, an axial through hole 11 is arranged in the fixed sleeve 1, a movable shaft 2 which can rotate and move axially relative to the fixed sleeve 1 is arranged in the axial through hole 11 in a penetrating manner, a spiral guide structure is arranged between the fixed sleeve 1 and the movable shaft 2 so that the movable shaft 2 can rotate and move axially relative to the fixed sleeve 1 when being subjected to axial force, a core part 211 is arranged at one end of the movable shaft 2, when the movable shaft 2 moves axially relative to the fixed sleeve 1, the core part 211 is inserted into or withdrawn from the cavity of the injection mold, a spiral structure 212 is provided on the outer sidewall of the core part 211, the spiral structure 212 is a spiral rib or groove, the lead of the spiral structure 212 is equal to that of the spiral guide structure, which is selected according to the specific structure of the plastic product.
The fixed sleeve 1 is provided with a mounting seat, the mounting seat is mounted on one template of the injection mold, the movable shaft 2 is mounted on the other template of the injection mold, and the two templates can move relatively. Taking the case that the movable shaft 2 is installed on the movable mold plate and the fixed sleeve 1 is installed on the fixed mold plate, when the mold is closed, the mold core part 211 is positioned in the cavity and used for forming a hole on a plastic product and forming a spiral groove or convex rib on the wall of the hole; when the mold is opened, the movable mold plate moves, an axial force is applied to the movable shaft 2, the movable shaft 2 rotates while moving axially along the spiral guide structure, and exits the mold cavity along the spiral grooves or convex ribs on the hole wall of the product, so that the movable shaft 2 can be separated from the product without damaging the structure of the hole wall of the product. In summary, according to the invention, a hole can be formed on a plastic product through the core part 211, and a spiral groove or convex rib structure is formed on the wall of the hole, when the mold is opened, the movable shaft 2 axially moves along the spiral guide structure and rotatably exits the cavity at the same time, so that the completeness and quality of the product can be ensured to meet the requirements, a complex structure can be formed only through one-time injection molding, and the working efficiency is improved.
The movable shaft 2 may be an integral structure or a structure formed by connecting a plurality of parts. In the present embodiment, the movable shaft 2 includes a first core member 21 and a second core member 22, and one end of the first core member 21 is detachably connected to one end of the second core member 22, for example, by a screw connection. The joint of the first core member 21 and the second core member 22 is located in the axial through hole 11, and the core portion 211 is provided at an end of the first core member 21 remote from the second core member 22. Since different products are suitable for different core portions 211, the first core member 21 is provided to be detachable, which facilitates replacement of the first core member 21 when replacing the products.
Referring to fig. 3, the spiral guide structure includes a first spiral groove 221 provided on the outer side wall of the second axial core member 22, a second spiral groove 12 provided on the inner side wall of the stationary sleeve 1, and balls 3 provided between the first spiral groove 221 and the second spiral groove 12, and the first spiral groove 221, the second spiral groove 12, and the spiral structure 212 on the core portion 211 are equal in lead. When the movable shaft 2 receives an axial force, the ball 3 is driven to roll along the first spiral groove 221, and the first core member 21 and the second core member 22 are driven to perform a combined motion of rotation and axial movement together.
Further, the spiral guide structure further includes a spiral guide groove 13 disposed on the inner side wall of the fixed sleeve 1, and a spiral guide rib 213 disposed on the outer side wall of the first axial core member 21 and engaged with the spiral guide groove 13, and the lead of the spiral guide rib 213, the spiral guide groove 13, the first spiral groove 221, and the lead of the second spiral groove 12 are all equal. The first spiral groove 221, the second spiral groove 12 and the balls 3 arranged between the first spiral groove and the second spiral groove mainly play a role in transmitting torque, the additionally arranged spiral guide groove 13 and the spiral guide ribs 213 can play a role in guiding, and the moving stability and the moving precision of the movable shaft 2 are improved. Of course, the above-described spiral guide ribs 213 may be provided on the second core member 22, and the first spiral groove 221 may be provided on the first core member 21. When the lead of the helical structure 212 in the core 211 is sufficiently large, the first helical groove 221, the second helical groove 12, and the balls 3 may be eliminated, and the movable shaft 2 may be moved in the axial direction while rotating when receiving an axial force only by the engagement of the helical guide groove 13 and the helical guide rib 213.
Alternatively, the spiral guide rib 213 and the spiral guide groove 13 are each trapezoidal in cross section, and the first spiral groove 221 and the second spiral groove 12 are each substantially semicircular in cross section.
Further, the first core member 21 has a clearance-fit section 214 in clearance fit with the fixed sleeve 1, the spiral guide rib 213 is provided in the clearance-fit section 214, the spiral guide rib 213 and the spiral guide groove 13 are in clearance fit, and the fixed sleeve 1 is provided with an oil guide groove 14 capable of introducing lubricating oil into a clearance between the clearance-fit section 214 and the fixed sleeve 1. Lubricating oil can be introduced into the clearance and the spiral guide groove 13 through the oil guide groove 14, and friction force is reduced. Further, a plurality of oil grooves 215 are distributed on the outer side wall of the portion between the clearance fit section 214 and the core part 211, the oil grooves 215 are staggered with each other, and when the core part 211 exits the cavity, the oil grooves 215 move to the position matched with the spiral guide groove 13, so that lubricating oil can enter the oil grooves 215 to perform a lubricating action.
A limit structure is provided between the movable shaft 2 and the stationary sleeve 1 to limit the maximum distance that the core portion 211 protrudes from the stationary sleeve 1. When the mold is closed, the mold core 211 is located in the mold cavity, the distance that the mold core 211 extends out of the fixed sleeve 1 is the maximum distance, the maximum distance is limited by the limiting structure, and the position of the mold core 211 in the mold closing state can meet the requirement.
Alternatively, the diameter of the first core member 21 is smaller than the diameter of the second core member 22 so that the movable shaft 2 is a stepped shaft, the axial through hole 11 is a stepped hole, and the limit structure includes a first stepped surface located in the stepped hole and a second stepped surface located on the stepped shaft and capable of abutting against the first stepped surface.
Referring to fig. 1, the second axial core member 22 is fitted with a stopper plate 41 that can abut against another member on the injection mold to restrict the axial movement of the movable shaft 2, and the stopper plate 41 is connected to the movable shaft 2 by a pin 42. A clamping bead screw 43 is connected between the limiting disc 41 and the second axle core member 22 to play a role in positioning when the movable axle 2 is installed.
Further, a sleeve 5 capable of rotating relative to the second shaft core member 22 is sleeved on the tail end of the second shaft core member 22, that is, the other end of the movable shaft 2 opposite to the core part 211, a wear-resistant sleeve 6 positioned between the sleeve 5 and the second shaft core member 22 is further sleeved on the second shaft core member 22, the wear-resistant sleeve 6 is in tight fit with the second shaft core member 22, and the wear-resistant sleeve 6 is in rotational fit with the sleeve 5. The shaft sleeve 5 is fixedly arranged on a template, when the movable shaft 2 rotates and moves axially, the template, the shaft sleeve 5 and the movable shaft 2 move axially together, the shaft sleeve 5 does not rotate, and the function of guiding and supporting the movable shaft 2 is achieved; the wear-resistant sleeve 6 then serves to increase the wear resistance.
Referring to fig. 1, an adjusting wear-resistant block 7 is further connected to the end face of the tail end of the second shaft core member 22 through a screw to serve as an auxiliary connecting and fixing fit.
The above is only a preferred embodiment of the present invention, and the technical solutions that achieve the objects of the present invention by basically the same means are all within the protection scope of the present invention.
Claims (10)
1. A linear-actuating forced-rotating release structure is arranged on an injection mold and is characterized by comprising a fixed sleeve (1), an axial through hole (11) is arranged in the fixed sleeve (1), a movable shaft (2) which can rotate and axially move relative to the fixed sleeve (1) penetrates through the axial through hole (11), a spiral guide structure is arranged between the fixed sleeve (1) and the movable shaft (2) so that the movable shaft (2) can rotate and axially move relative to the fixed sleeve (1) when being subjected to axial force, one end of the movable shaft (2) is provided with a core part (211), when the movable shaft (2) moves axially relative to the fixed sleeve (1), the core part (211) is inserted into or withdrawn from a cavity of the injection mold, the outer side wall of the core part (211) is provided with a spiral structure (212), the lead of the helical structure (212) is equal to the lead of the helical guide structure.
2. A linear actuation forced rotation release structure according to claim 1, characterized in that the spiral guide structure comprises a first spiral groove (221) disposed on the outer side wall of the movable shaft (2), a second spiral groove (12) disposed on the inner side wall of the fixed sleeve (1), and a ball (3) disposed between the first spiral groove (221) and the second spiral groove (12), and the lead of the first spiral groove (221) and the lead of the second spiral groove (12) are equal.
3. The linear actuation forced rotation release structure according to claim 2, wherein the spiral guide structure further comprises a spiral guide groove (13) disposed on the inner side wall of the fixed sleeve (1) and a spiral guide rib (213) disposed on the outer side wall of the movable shaft (2) and engaged with the spiral guide groove (13), and the lead of the spiral guide rib (213), the spiral guide groove (13), the first spiral groove (221) and the second spiral groove (12) is equal.
4. The linear actuation forced rotation release structure according to claim 3, wherein the movable shaft (2) has a clearance fit section in clearance fit with the fixed sleeve (1), the spiral guide rib (213) is disposed in the clearance fit section, the spiral guide rib (213) and the spiral guide groove (13) are in clearance fit, and the fixed sleeve (1) is provided with an oil guide groove (14) capable of introducing lubricating oil into a clearance between the clearance fit section and the fixed sleeve (1).
5. A linearly acting forced rotation release structure according to claim 1, characterized in that a limit structure is provided between the movable shaft (2) and the fixed sleeve (1) to limit the maximum distance that the core part (211) protrudes from the fixed sleeve (1).
6. The linear actuation forced rotation release structure according to claim 5, wherein the movable shaft (2) is a stepped shaft, the axial through hole (11) is a stepped hole, and the limiting structure comprises a first stepped surface located in the stepped hole and a second stepped surface located on the stepped shaft and capable of abutting against the first stepped surface.
7. The linear actuation forced rotation release structure according to claim 1, wherein the movable shaft (2) is sleeved with a limiting disc (41) capable of abutting against other components on an injection mold to limit axial movement of the movable shaft (2).
8. A linearly acting forced rotation release structure according to claim 7, wherein the limiting disc (41) is connected with the movable shaft (2) through a pin (42).
9. The linear actuation forced rotation release structure according to claim 1, characterized in that the other end of the movable shaft (2) opposite to the core part (211) is sleeved with a shaft sleeve (5) capable of rotating relative to the movable shaft (2), the movable shaft (2) is further sleeved with a wear-resistant sleeve (6) located between the shaft sleeve (5) and the movable shaft (2), the wear-resistant sleeve (6) is tightly fitted with the movable shaft (2), and the wear-resistant sleeve (6) is rotationally fitted with the shaft sleeve (5).
10. A linearly acting forced rotation release structure according to claim 2, wherein said movable shaft (2) comprises a first shaft core member (21) and a second shaft core member (22), one end of said first shaft core member (21) is detachably connected to one end of said second shaft core member (22), said core portion (211) is disposed at the other end of said first shaft core member (21), and said first spiral groove (221) is disposed on the outer side wall of said first shaft core member (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910863516.1A CN110605819A (en) | 2019-09-12 | 2019-09-12 | Linear actuation forced rotation is from type structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910863516.1A CN110605819A (en) | 2019-09-12 | 2019-09-12 | Linear actuation forced rotation is from type structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110605819A true CN110605819A (en) | 2019-12-24 |
Family
ID=68892739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910863516.1A Pending CN110605819A (en) | 2019-09-12 | 2019-09-12 | Linear actuation forced rotation is from type structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110605819A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106976213A (en) * | 2017-03-28 | 2017-07-25 | 宁波神通模塑有限公司 | A kind of inner threaded core-pulling structure of injection mold |
| CN210820639U (en) * | 2019-09-12 | 2020-06-23 | 中山联合光电科技股份有限公司 | Axial stress rotation is from type structure |
-
2019
- 2019-09-12 CN CN201910863516.1A patent/CN110605819A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106976213A (en) * | 2017-03-28 | 2017-07-25 | 宁波神通模塑有限公司 | A kind of inner threaded core-pulling structure of injection mold |
| CN210820639U (en) * | 2019-09-12 | 2020-06-23 | 中山联合光电科技股份有限公司 | Axial stress rotation is from type structure |
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