CN217777687U - Screw thread self-rotating core-pulling mechanism of injection mold - Google Patents
Screw thread self-rotating core-pulling mechanism of injection mold Download PDFInfo
- Publication number
- CN217777687U CN217777687U CN202122433560.4U CN202122433560U CN217777687U CN 217777687 U CN217777687 U CN 217777687U CN 202122433560 U CN202122433560 U CN 202122433560U CN 217777687 U CN217777687 U CN 217777687U
- Authority
- CN
- China
- Prior art keywords
- core
- sliding block
- ball bearing
- block seat
- threaded
- 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.)
- Active
Links
Images
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The utility model discloses an injection mold's screw thread spin mechanism of loosing core, to the problem that structure and working process are complicated of loosing core, the following technical scheme is provided, include the take-up housing with back template sliding connection, with the oblique guide pillar of preceding template fixed connection and pass the take-up housing, install deep groove ball bearing in the take-up housing, thrust ball bearing and screw core, the screw core passes deep groove ball bearing and thrust ball bearing, at the in-process of loosing core, guide pillar drive take-up housing removes to one side, form screw core's axial loose core power, utilize the characteristic that the internal thread lead angle of the number of polylines is greater than equivalent friction angle, make screw core produce spin torque, and under deep groove ball bearing and thrust ball bearing's effect, driven frictional resistance has been reduced effectively, screw core spin continuity of loosing core has been guaranteed, flexibility and stationarity, realize moulding an internal thread drawing of core drawing a core.
Description
Technical Field
The utility model relates to an injection mold technical field, more specifically say, it relates to an injection mold's screw spin mechanism of loosing core.
Background
In various industries, molded articles featuring internal thread features are common. The traditional solutions mainly include manual rotation of a core to be separated from a product, oil cylinder or motor-driven gear and rack pair loose cores, gear and chain pair loose cores, gear and line coming rod loose cores and the like. The core-pulling mechanisms have complex structures and large installation space, directly result in the enlargement of the size of the die, and increase the manufacturing and using cost of the die, and particularly for slender plastic products with multiple threads and internal threads, the core-pulling requirements of one die and multiple cavities are obviously not suitable for the miniaturization of the die size and the realization of the core-pulling requirements of one die and multiple cavities.
At present, chinese patent application No. 201610371918.6 discloses a thread spin core-pulling mechanism of an injection mold bevel gear mesh type eight-head injection mold, which comprises an upper compound plate, a lower compound plate, a fixed template and a lock module which are arranged below the upper compound plate, a push tube core fixing plate which is arranged on the lower compound plate, a push tube core which is arranged on the push tube core fixing plate, a first die leg, an upper ejector plate, a lower ejector plate which are arranged on the push tube core fixing plate, a push tube which is arranged between the upper ejector plate and the lower ejector plate, a first bearing fixing plate which is arranged on the first die leg, a first resetting device which is arranged on the outer side of the upper ejector plate and the lower ejector plate, a second die leg which is arranged on the second die leg, a driving shaft which is arranged on the outer wall of the push tube, a chain wheel and a driving bevel gear which are arranged on the driving shaft, a movable template which is arranged on the movable template, eight sets of bearing seats which are arranged on each bearing seat, a left deep groove ball bearing, a left deep groove bearing, a left thrust ball bearing, a left thrust, a right thrust, a left spline shaft bearing, a right thrust bearing, a driven bevel gear which is arranged on the outer wall of the left deep groove, a right spline shaft bearing, and a driven bevel gear which is arranged on the outer wall of the driven bevel gear, and a right spline shaft bearing, and a right spline shaft, wherein the left spline shaft bearing are arranged between the left spline shaft bearing are arranged on the left spline shaft bearing, and a right spline shaft are arranged on the external screw thread of the driven bevel gear, and the driven bevel gear. When demoulding is needed after forming, the motor drives the chain wheel to rotate, so that the spline shaft is driven to rotate through the driving bevel gear and the driven bevel gear which are meshed with each other, the end part of the spline shaft is separated from the internal thread hole of a product, and automatic core pulling of the internal thread hole is realized.
Although the thread self-rotating core-pulling mechanism of the bevel gear meshed type eight-head injection mold of the injection mold can automatically pull the core and reduce the labor intensity of workers, the whole mechanism needs the matching work of a plurality of groups of bevel gears, a rotating shaft and a locking module, the equipment structure and the working process are complex, the spline shaft is in splined connection with the driven bevel gear, the spline shaft needs to overcome great friction resistance when moving axially, the core-pulling effect of the internal thread is influenced, and the equipment manufacturing difficulty is high and the cost is high.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide an injection mold's screw spin mechanism of loosing core has simple structure, convenient to use's advantage.
In order to achieve the above purpose, the utility model provides a following technical scheme:
a screw thread self-rotating core-pulling mechanism of an injection mold comprises
The sliding block seat is connected with the rear template in a sliding mode and used for core pulling and resetting;
the inclined guide post is fixedly connected with the front template and penetrates through the sliding block seat to drive the sliding block seat to move;
and the threaded mold core is arranged in the sliding block seat and connected with the internal thread of the plastic part, generates a rotating moment when moving along with the sliding block seat towards the direction far away from the plastic part and rotates and is drawn out from the plastic part.
By adopting the technical scheme, the inclined guide post drives the threaded core in the sliding block seat to move to generate axial core pulling force, the characteristic that the rising angle of the multi-thread internal thread is larger than the equivalent friction angle is utilized, the torque for enabling the threaded core to spin is generated through the decomposition of the force of internal and external thread meshing transmission, the threaded core spinning core pulling replaces a special transmission pair core pulling, the structure of the threaded core spinning core pulling mechanism is simpler, the size of a mold is effectively controlled, the perfect core pulling and demolding of the structural characteristics of the multi-thread internal thread of a plastic part product can be realized, the inclined guide post can drive the sliding block seat to drive the threaded core to move to replace oil cylinder or motor driving, the structure is simple, and the work efficiency is high.
Further, a shaft shoulder is arranged on the threaded core, a thrust ball bearing is installed in the sliding block seat, and the thrust ball bearing is abutted to the shaft shoulder.
By adopting the technical scheme, when the sliding block seat moves, the sliding block seat can drive the threaded core to move along the axial direction, so that the demoulding is completed through the core pulling, the structure is simple, the thrust ball bearing can reduce the friction between the self-rotation of the threaded core and the sliding block seat, the transmission friction resistance is effectively reduced, the self-rotation core-pulling high-precision motion is ensured, and the self-rotation core-pulling of the threaded core is flexible, continuous and stable.
Furthermore, a deep groove ball bearing which is rotationally connected with the threaded core is arranged in the slider seat.
By adopting the technical scheme, the deep groove ball bearing effectively reduces the frictional resistance between the threaded core and the slider seat, optimizes the core-pulling effect and enables the self-spinning core-pulling of the threaded core to be flexible, continuous and stable.
Furthermore, the end part of the inclined guide post is provided with a clamping piece connected with the front template.
By adopting the technical scheme, the clamping piece can be connected with the front template, the position of the oblique guide pillar is fixed, and the oblique guide pillar can be guaranteed to move along with the front template to push the sliding block seat to move.
Furthermore, the sliding block seat is provided with a limiting groove for preventing the sliding block seat from sliding out of the rear template.
By adopting the technical scheme, the limiting groove can be matched with the limiting component of the rear template to prevent the sliding block seat from sliding out of the rear template.
Further, the threaded cores are arranged in multiple groups and are installed in the slider seat.
By adopting the technical scheme, the plurality of threaded cores are configured on the sliding block seat, and the plurality of threaded cores can be driven by one sliding block seat to perform core-pulling and demolding, so that one mold with multiple cavities is realized, the injection molding production efficiency is improved, and the injection molding production cost is reduced.
Furthermore, a pressure plate is arranged on the rear template, and the sliding block seat is positioned below the pressure plate and is in sliding connection with the pressure plate.
By adopting the technical scheme, the sliding block seat is positioned below the pressing plate, when the front template drives the inclined guide post to ascend, the inclined guide post drives the sliding block seat to move along the rear template and be in sliding connection with the pressing plate, and the pressing plate can prevent the sliding block seat from moving towards the front template.
To sum up, the utility model discloses following beneficial effect has:
1. the inclined guide post drives the spiral core in the slider seat to move through the slider seat, the characteristic that the lead angle of a plurality of internal threads is larger than an equivalent friction angle is utilized, the torque for enabling the thread core to spin is generated through the decomposition of the force of the internal thread and external thread meshing transmission, and the thread core spinning core pulling replaces a special transmission pair core pulling pair, so that the structure of the thread spinning core pulling mechanism is simpler, the size of a mold is effectively controlled, and the mold cost is favorably reduced;
2. the thrust ball bearing can reduce the larger friction generated by the direct contact of the threaded core and the sliding block seat, effectively reduce the transmission friction resistance, ensure the continuity, flexibility and stability of the self-spinning core-pulling of the threaded core, realize the core-pulling and demoulding of the internal thread of the plastic part through the axial movement and the self-spinning of the threaded core, has simple structure and convenient operation, and ensures the high-precision movement of the self-spinning core-pulling;
3. the sliding block seat can be provided with a plurality of threaded cores, one-mold multi-cavity is realized, a plurality of plastic parts can be subjected to core pulling and demolding simultaneously, the working efficiency is improved, the occupied space is small, and the injection molding production cost is reduced.
Drawings
Fig. 1 is a schematic structural view of the utility model;
FIG. 2 is a cross-sectional view of the novel use;
FIG. 3 is a schematic view of another embodiment of the present invention;
fig. 4 is a schematic diagram of the utility model.
In the figure: 1. a slider seat; 11. pressing a plate; 2. a first slider seat; 21. a first through hole; 3. a second slider seat; 31. a circular groove; 32. a limiting groove; 33. a second through hole; 4. a threaded core; 41. a threaded rod; 42. a core bar; 43. a shaft shoulder; 44. a first shoulder; 45. a second shoulder; 5. a thrust ball bearing; 51. a first thrust ball bearing; 52. a second thrust ball bearing; 6. a deep groove ball bearing; 7. an inclined guide post; 71. a clamping piece.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.
A self-rotating thread core-pulling mechanism of an injection mold is shown in figure 1 and used for core-pulling and demolding of an internal thread structure and comprises a slider seat 1, an inclined guide post 7 used for driving the slider seat 1 to move and a thread mold core 4 used for core-pulling and demolding, wherein the slider seat 1 is connected with a rear template in a sliding mode, the thread mold core 4 is installed in the slider seat 1, the inclined guide post 7 is fixedly connected with a front template, and the inclined guide post 7 penetrates through the slider seat 1 in an inclined mode.
Specifically, as shown in fig. 1 and 2, slider seat 1 is a square slider, including first slider seat 2 and second slider seat 3, first slider seat 2 and second slider seat 3 pass through bolt fixed connection, slider seat 1's bottom both sides are equipped with the flange along slider seat 1 slip direction, the lower surface and the back template laminating of flange, the upper surface and the clamp plate 11 sliding connection of flange, clamp plate 11 passes through the screw fastening installation to the back template in order to guarantee that slider seat 1 can follow clamp plate 11 and slide on the back template and prevent slider seat 1 to remove towards the template direction.
As shown in fig. 2, the first through hole 21 is formed in the first slider seat 2, the deep groove ball bearings 6 are installed in the first through hole 21, the deep groove ball bearings 6 are arranged into two groups along the extending direction of the first through hole 21, the seat rings of the two groups of deep groove ball bearings 6 are fixedly connected with the first slider seat 2, the first thrust ball bearing 51 is installed on the side, connected with the second slider seat 3, of the first slider seat 2, the seat ring of the first thrust ball bearing 51 is fixedly connected with the first slider seat 2, and the inner diameter of the first thrust ball bearing 51 is the same as the inner diameter of the deep groove ball bearing 6.
As shown in fig. 2, a circular groove 31 is formed in one side of the second slider seat 3 connected with the first slider seat 2, a second thrust ball bearing 52 is installed in the circular groove 31, a seat ring of the second thrust ball bearing 52 is fixedly connected with the second slider seat 3, the inner diameter of the second thrust ball bearing 52 is smaller than that of the first thrust ball bearing 51, and limiting grooves 32 (see fig. 3) for preventing the slider seat 1 from sliding out of the rear template are formed in two sides of the bottom of the second slider seat 3.
As shown in fig. 2, the core rod 42 of the threaded core 4 is rotatably connected with the slider seat 1, wherein the collar of the deep groove ball bearing 6 is connected with the core rod 42, the threaded rod 41 of the threaded core 4 is connected with the internal thread of the plastic part, the core rod 42 of the threaded core 4 is provided with a shoulder 43, the shoulder 43 comprises a first shoulder 44 and a second shoulder 45, the first shoulder 44 abuts against the collar of the first thrust ball bearing 51, in this embodiment, the outer diameter of the first shoulder 44 is smaller than the outer diameter of the first thrust ball bearing 51 so as to prevent the first shoulder 44 from contacting with the slider seat 1 to generate friction force, increase resistance during spinning, and the second shoulder 45 abuts against the collar of the second thrust ball bearing 52, in this embodiment, the outer diameter of the second shoulder 45 is equal to the outer diameter of the second thrust ball bearing 52 so as to prevent the second shoulder 45 from contacting with the slider seat 1 to generate friction force, effectively reduce friction resistance during transmission, and multiple sets of threaded cores 4 can be installed in the slider seat 1, wherein one set is configured in this embodiment.
As shown in fig. 3, the second slider seat 3 is provided with a second through hole 33 longitudinally and obliquely penetrating through the slider seat 1, the oblique guide post 7 penetrates through the second through hole 33, the oblique direction of the second through hole 33 faces the core pulling direction, the length of the oblique guide post 7 is greater than that of the second through hole 33, and the top end of the oblique guide post 7 is provided with a clamping piece 71 connected with the front mold plate to ensure that the oblique guide post 7 is fixedly connected with the front mold plate.
The working process and principle of the embodiment are as follows:
when using the utility model discloses a time, as shown in fig. 4, the piece internal thread structure of moulding that is connected with threaded core 4 looses core behind injection moulding, joint spare 71 and preceding template fixed connection are passed through to the tip of oblique guide pillar 7, the direction removal of back template is kept away from to the preceding template court, clamp plate 11 can prevent slider seat 1 to remove towards the preceding template direction, at this moment, oblique guide pillar 7 supports the pressure with slider seat 1 and produces the axial loose core power along threaded core 4 extending direction, oblique guide pillar 7 drives slider seat 1 and moves towards the direction of keeping away from the piece along clamp plate 11, and simultaneously, first thrust ball bearing 51 promotes threaded core 4 and removes, utilize the characteristic that the internal thread lead angle of multiwire is greater than equivalent friction angle, in the process, the decomposition of external screw thread meshing transmission power, along with the removal of threaded core 4, threaded rod 41 of threaded core 4 produces the torque, drive thrust ball bearing 5 and deep groove ball bearing 6 simultaneously and rotate the frictional force that produces when reducing threaded core 4 and rotate, slider seat 1 continues to move, finally make the piece of moulding, drawing of patterns is intact, preceding template downstream, guide pillar 7 supports the push slider seat and removes, reset.
It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (7)
1. The utility model provides an injection mold's screw thread spin mechanism of loosing core which characterized in that: comprises that
The sliding block seat (1) is connected with the rear template in a sliding mode and used for pulling and resetting;
the inclined guide post (7) is fixedly connected with the front template and penetrates through the sliding block seat (1) and is used for driving the sliding block seat (1) to move;
and the threaded mold core (4) is arranged in the sliding block seat (1) and is connected with the internal thread of the plastic part, and generates a rotating moment and rotates and is extracted from the plastic part when moving towards the direction far away from the plastic part along with the sliding block seat (1).
2. The threaded spin core-pulling mechanism of an injection mold of claim 1, wherein: and a shaft shoulder (43) is arranged on the threaded core (4), a thrust ball bearing (5) is arranged in the sliding block seat (1), and the thrust ball bearing (5) is abutted against the shaft shoulder (43).
3. The threaded spin core-pulling mechanism of an injection mold of claim 2, wherein: and a deep groove ball bearing (6) rotatably connected with the threaded mold core (4) is arranged in the sliding block seat (1).
4. The threaded spin core-pulling mechanism of an injection mold of claim 1, wherein: and the end part of the inclined guide post (7) is provided with a clamping piece (71) connected with the front template.
5. A threaded spin core-pulling mechanism for injection molds according to any one of claims 1 to 4, characterized in that: the sliding block seat (1) is provided with a limiting groove (32) for preventing the sliding block seat (1) from sliding out of the rear template.
6. A threaded spin core-pulling mechanism for injection molds according to any one of claims 1 to 4, characterized in that: the thread mold cores (4) are arranged in multiple groups and are arranged in the sliding block seat (1).
7. A threaded spin core-pulling mechanism for injection molds according to any one of claims 1 to 4, characterized in that: and a pressing plate (11) is arranged on the rear template, and the sliding block seat is positioned below the pressing plate (11) and is in sliding connection with the pressing plate (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122433560.4U CN217777687U (en) | 2021-10-09 | 2021-10-09 | Screw thread self-rotating core-pulling mechanism of injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122433560.4U CN217777687U (en) | 2021-10-09 | 2021-10-09 | Screw thread self-rotating core-pulling mechanism of injection mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217777687U true CN217777687U (en) | 2022-11-11 |
Family
ID=83904880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122433560.4U Active CN217777687U (en) | 2021-10-09 | 2021-10-09 | Screw thread self-rotating core-pulling mechanism of injection mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217777687U (en) |
-
2021
- 2021-10-09 CN CN202122433560.4U patent/CN217777687U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN200951622Y (en) | Automatic demoulding mould of plastic pipe fitting with internal thread | |
| CN102975339B (en) | Plastic injection mold for realizing simultaneously core pulling | |
| CN217777687U (en) | Screw thread self-rotating core-pulling mechanism of injection mold | |
| CN214137114U (en) | Die for machining main gear of motor | |
| CN104589595B (en) | Mold capable of simultaneously drawing out slider insert during mold opening | |
| CN113942187A (en) | Injection mold capable of continuously ejecting and demolding | |
| CN206796437U (en) | A kind of screw thread drift mould emptier | |
| CN105965796B (en) | The engagement type eight inner threaded core-pulling mechanisms of injection mold bevel gear | |
| CN106079265A (en) | Automatically move back the injection mold of thread | |
| CN112477029B (en) | Pre-ejection demoulding mechanism of threaded connection cover mould | |
| CN222004253U (en) | In-mold slide rotary demolding mold structure | |
| CN106113404A (en) | Double-head inner thread mould and use its method preparing double-head inner thread product | |
| CN219634415U (en) | Cost and space saving large-stroke thread core-pulling die | |
| CN202846814U (en) | Multi-directional thread demoulding structure for slide | |
| CN103407075B (en) | A kind of internal and external threads plastic part mould of full-automatic molding band difference pitch | |
| CN220219491U (en) | Space-saving densely-arranged multi-cavity synchronous tooth twisting die structure | |
| CN220995268U (en) | Steel pipe tapered end mould | |
| CN219325483U (en) | Special injection mold for nut forming processing | |
| CN111002539A (en) | Edge-flying-preventing core-pulling mechanism applied to injection mold | |
| CN112549462A (en) | Automatic resetting mechanism for withdrawing of twisted teeth | |
| CN219405251U (en) | Lid injection mold with hank tooth | |
| CN221605013U (en) | Injection mold for threaded pipe fitting | |
| CN107914367B (en) | Double-linkage type shower head elbow injection mold and using method thereof | |
| CN202965095U (en) | Injection mould capable of simultaneously realizing core pulling | |
| CN217621963U (en) | Umbrella-shaped thread-removing mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Thread Spin Core Pulling Mechanism for Injection Mold Effective date of registration: 20230421 Granted publication date: 20221111 Pledgee: Mudu sub branch of Bank of Suzhou Co.,Ltd. Pledgor: SUZHOU JINGHUISI MOULD Co.,Ltd. Registration number: Y2023980038770 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |