CN213733186U - Take spline to take off screw thread and take off mould of back-off demolding structure by force simultaneously - Google Patents
Take spline to take off screw thread and take off mould of back-off demolding structure by force simultaneously Download PDFInfo
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- CN213733186U CN213733186U CN202022821616.9U CN202022821616U CN213733186U CN 213733186 U CN213733186 U CN 213733186U CN 202022821616 U CN202022821616 U CN 202022821616U CN 213733186 U CN213733186 U CN 213733186U
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Abstract
The utility model discloses a take spline to take off mould of screw thread while breaking off back-off demolding structure by force, wherein, the top shaping of internal thread mould benevolence subassembly has the external screw thread, and extend to the mould benevolence chamber of moulding plastics, wherein, internal thread mould benevolence subassembly includes a axle core pole, and from top to bottom overlaps the screw thread mould benevolence external member, guide pin bushing one, location support sleeve and the transmission adapter sleeve that locate the axle core pole in proper order, guide pin bushing one activity cover locates the middle and lower part of screw thread mould benevolence external member, guide pin bushing one is fixed mounting in the movable mould board, the shaping has along the axle center direction setting of axle core pole, the movable spline structure between screw thread mould benevolence external member and the guide pin bushing one; the positioning support sleeve is rotatably arranged on the supporting plate; the bottom of the mandrel bar is rotatably arranged on the bottom needle plate; and a thread-removing driving motor is arranged on the side part of the mold, the thread-removing driving motor is in transmission connection with a transmission connecting sleeve through a belt or a chain, and the transmission connecting sleeve is in synchronous transmission fit with the shaft core rod. The automatic demoulding of the internal thread back-off injection molding product is realized, the structure is simple, the maintenance is convenient, and the operation is stable and reliable.
Description
Technical Field
The utility model belongs to the technical field of the mould structure technique and specifically relates to a take spline to take off screw thread and take off the mould of back-off demolding structure by force simultaneously.
Background
The existing product with the internal part simultaneously provided with the threads and the full-circumference back-off is difficult to demould because the threads and the back-off are not on the same side when injection molding is carried out, the existing automatic demoulding structure easily causes the damage of the product threads or the back-off forming structure, and the demoulding is carried out by a common manual method. There is therefore a need to provide an effective solution to the problem of automatic ejection of injection-moulded products of this type.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a take the spline to take off the mould of screw thread simultaneously and take off back-off demolding structure by force, can realize the automatic drawing of patterns of internal thread back-off injection moulding product, simple structure, it is convenient to maintain, and the operation is reliable and stable.
In order to realize the purpose, the utility model discloses the technical scheme who adopts is: a die with a spline thread-stripping and simultaneously forced thread-stripping undercut die-stripping structure comprises a top plate, a fixed die plate, a movable die plate, a supporting plate and a bottom needle plate which are sequentially arranged from top to bottom, wherein the fixed die plate is fixedly connected to the top plate, the top plate and the movable die plate are movably connected and matched up and down, the supporting plate is fixedly connected to the bottom needle plate, the bottom needle plate and the movable die plate are movably connected and matched up and down, an upper inner die and a lower inner die are arranged between the fixed die plate and the movable die plate and movably covered and arranged, an upper die core and a lower die core are respectively arranged on the covering surfaces of the upper inner die and the lower inner die, when the upper inner die and the lower inner die are covered, the upper die core and the lower die core are surrounded to form an injection die core cavity, an internal thread die core component is rotatably arranged on the bottom needle plate, external threads are formed on the top of the internal thread die core component and extend to the injection die core cavity, wherein the internal thread die core component comprises a shaft core rod, the guide sleeve I is movably sleeved at the middle lower part of the threaded mold core sleeve, the guide sleeve I is fixedly arranged on the movable template, and a movable spline structure arranged along the axis direction of the shaft core rod is formed between the threaded mold core sleeve I and the guide sleeve I; the positioning support sleeve is rotatably arranged on the supporting plate; the bottom of the mandrel bar is rotatably arranged on the bottom needle plate; and a thread-removing driving motor is arranged on the side part of the mold, the thread-removing driving motor is in transmission connection with a transmission connecting sleeve through a belt or a chain, and the transmission connecting sleeve is in synchronous transmission fit with the shaft core rod.
In a further technical scheme, bearings are respectively arranged between the positioning support sleeve and the supporting plate and between the shaft core rod and the bottom needle plate.
In a further technical scheme, the bottom of the shaft core rod is sleeved with a second guide sleeve, and the top of the second guide sleeve movably abuts against the transmission connecting sleeve.
In a further technical scheme, a connecting ring is transversely and convexly arranged on the circumferential part of the transmission connecting sleeve, and a transmission chain is connected between the connecting ring and the thread-removing driving motor.
In a further technical scheme, the bottom needle plate is provided with a component base at a transverse interval, a connecting hole which penetrates through the bottom needle plate and the bottom needle plate is formed in the center of the component base, a bottom sinking hole is formed in the bottom of the connecting hole, a transverse convex limiting ring is formed in the bottom of the shaft core rod, the shaft core rod is movably arranged in the connecting hole in a penetrating mode, and the limiting ring is embedded and installed in the bottom sinking hole.
In a further technical scheme, the fixed die plate is provided with a nozzle, namely, an opening of the nozzle extends to the injection die core cavity.
In a further technical scheme, at least one chain guide shaft is arranged in the supporting plate, and each chain guide shaft is movably sleeved with a belt or a chain respectively.
In a further technical scheme, an inverted die core is arranged between the threaded die core external member and the shaft core rod.
After the structure is adopted, compared with the prior art, the utility model the advantage that has is: the utility model provides a mould with a spline thread stripping and simultaneously forced back-off demoulding structure, which can realize the forming and automatic demoulding of a demoulding machine product with threads and full back-off inside through an internal thread mould core component consisting of a shaft core rod, a thread mould core external member, a guide sleeve I, a positioning support sleeve and a transmission connecting sleeve, and has simple and reliable structure, high operation efficiency and low maintenance cost; manual demoulding is avoided, and the production efficiency is improved.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic cross-sectional view of the present invention.
Fig. 2 is an enlarged view at a in fig. 1.
Fig. 3 is a schematic structural view of the internal thread mold insert assembly of the present invention.
Fig. 4 is a radial sectional view of the female insert assembly of the present invention.
Fig. 5 is an axial sectional view of the female insert assembly of the present invention.
Detailed Description
The following are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby.
A mold with a spline thread-stripping and simultaneously forced thread-stripping undercut die-stripping structure is disclosed, as shown in fig. 1 to 5, the mold comprises a top plate 1, a fixed mold plate 2, a movable mold plate 3, a support plate 4 and a bottom needle plate 5 which are sequentially arranged from top to bottom, the fixed mold plate 2 is fixedly connected with the top plate 1, the top plate 1 is movably connected and matched with the movable mold plate 3 up and down, the support plate 4 is fixedly connected with the bottom needle plate 5, the bottom needle plate 5 is movably connected and matched with the movable mold plate 3 up and down, an upper inner mold 41 and a lower inner mold 42 are arranged between the fixed mold plate 2 and the movable mold plate 3 up and down, the upper inner mold 41 and the lower inner mold 42 are movably covered, an upper mold core and a lower mold core are respectively arranged on the covered surfaces of the upper inner mold 41 and the lower mold core, when the upper inner mold core 41 and the lower inner mold core are covered with each other, the upper mold core and the lower mold core surround to form an injection mold core cavity, an inner thread mold core assembly 7 is rotatably arranged on the bottom needle plate 5, and an outer thread is formed on the top of the inner thread assembly 7, the internal thread mold core assembly 7 comprises a shaft core rod 71, a thread mold core external member 72, a guide sleeve I73, a positioning support sleeve 74 and a transmission connecting sleeve 75 which are sequentially sleeved on the shaft core rod 71 from top to bottom, the guide sleeve I73 is movably sleeved at the middle lower part of the thread mold core external member 72, the guide sleeve I73 is fixedly arranged on the movable template 3, and a movable spline structure which is arranged along the axis direction of the shaft core rod 71 is formed between the thread mold core external member 72 and the guide sleeve I73; the positioning supporting sleeve 74 is rotatably arranged on the supporting plate 4; the bottom of the mandrel bar 71 is rotatably mounted on the bottom needle plate 5; the side part of the mould is provided with a thread removing driving motor 6, the thread removing driving motor 6 is connected with a transmission connecting sleeve 75 through a belt or a chain in a transmission way, and the transmission connecting sleeve 75 is in synchronous transmission fit with the shaft core rod 71. An effective solution is provided for the demolding problem that the demolding machine product 8 is internally provided with threads and full-circle reverse buckles simultaneously, and the threads and the reverse buckles are not arranged on the same side, and the mechanism is stable and reliable in action and small in size. The specific demolding process is that firstly, the space between the movable template 3 and the supporting plate 4 is opened, at the moment, the threaded mold core suite 72 is kept still under the influence of the threads of the product 8 and the pulling force of the back-off, and the shaft core rod 71, the guide sleeve I73, the positioning support sleeve 74, the transmission connecting sleeve 75 and other parts retreat; then, starting the thread-removing driving motor 6, driving the internal thread mold core assembly 7 to rotate through a chain, and driving the thread mold core external member 72 to remove the product 8 through a spline structure; and finally, the movable mould side of the mould is integrally opened, and the product 8 is ejected out. The die with the spline thread-stripping and simultaneously forced-stripping back-off demolding structure can realize molding and automatic demolding of the demolding machine product 8 with threads and full-circle back-offs inside, and is simple and reliable in structure, high in operation efficiency and low in maintenance cost.
Specifically, a plurality of concave tooth grooves 741 are arranged on the inner wall of the positioning support sleeve 74 at intervals along the circumferential direction; a plurality of convex teeth 721 matched with the outer wall of the threaded mold core external member 72 are arranged at intervals along the circumferential direction, the positioning supporting sleeve 74 is movably sleeved on the outer wall of the threaded mold core external member 72 during assembly, and each concave tooth groove 741 is respectively meshed with the corresponding convex teeth 721. The up-and-down stretching stroke is realized between the threaded mold core external member 72 and the whole internal threaded mold core assembly 7, so that the shaft core rod 71 is separated from the injection mold core cavity first, and the back-off part of the product 8 is prevented from being blocked.
Specifically, bearings 78 are respectively arranged between the positioning support sleeve 74 and the supporting plate 4 and between the shaft core rod 71 and the bottom needle plate 5.
Specifically, the bottom of the shaft core rod 71 is sleeved with a second guide sleeve 76, and the top of the second guide sleeve 76 movably abuts against the transmission connecting sleeve 75.
Specifically, a connection ring 751 is laterally and convexly provided on a circumferential portion of the transmission connection sleeve 75, and a transmission chain is connected between the connection ring 751 and the thread-removing drive motor 6.
Specifically, the bottom needle plate 5 is provided with an assembly base 77 at a transverse interval, a connecting hole which penetrates through the assembly base 77 from top to bottom is formed in the center of the assembly base 77, a bottom sinking hole is formed in the bottom of the connecting hole, a transverse convex limiting ring is formed at the bottom of the shaft core rod 71, the shaft core rod 71 is movably arranged in the connecting hole in a penetrating mode, and the limiting ring is embedded in the bottom sinking hole.
Specifically, the fixed die plate 2 is provided with a nozzle 43, i.e., an opening of the nozzle 43 extends to the injection die cavity.
Specifically, at least one chain guiding shaft 44 is arranged in the supporting plate 4, and a belt or a chain is movably sleeved on each chain guiding shaft 44.
Specifically, the undercut cavity is provided between the threaded cavity assembly 72 and the shaft core rod 71, and the undercut portion of the product 8 is formed by the undercut cavity, so that the shaft core rod 71 needs to be taken out first during demolding, the undercut portion of the product 8 is prevented from being clamped, the product 8 is prevented from being threaded and undercut and being separated simultaneously, and the undercut portion of the product 8 is further prevented from being damaged by pulling.
The above description is only for the preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.
Claims (8)
1. A die with a spline thread-stripping and simultaneously forced-stripping back-off mold-stripping structure comprises a top plate (1), a fixed die plate (2), a movable die plate (3), a supporting plate (4) and a bottom needle plate (5) which are sequentially arranged from top to bottom, wherein the fixed die plate (2) is fixedly connected with the top plate (1), the top plate (1) and the movable die plate (3) are movably connected and matched from top to bottom, the supporting plate (4) is fixedly connected with the bottom needle plate (5), the bottom needle plate (5) and the movable die plate (3) are movably connected and matched from top to bottom, an upper inner die (41) and a lower inner die (42) are arranged between the fixed die plate (2) and the movable die plate (3) from top to bottom, the upper inner die (41) and the lower inner die (42) are movably covered and arranged, an upper die core and a lower die core are respectively arranged on the covering surfaces of the upper inner die (41) and the lower inner die (42), the upper die core and the lower die core surround to form an injection die core cavity, the method is characterized in that: the bottom needle plate (5) is rotatably provided with an internal thread mold core component (7), the top of the internal thread mold core component (7) is provided with an external thread and extends to an injection molding mold core cavity, wherein,
the internal thread mold core assembly (7) comprises a shaft core rod (71), a thread mold core external member (72), a guide sleeve I (73), a positioning support sleeve (74) and a transmission connecting sleeve (75), wherein the thread mold core external member (72), the guide sleeve I (73), the positioning support sleeve (74) and the transmission connecting sleeve (75) are sequentially sleeved on the shaft core rod (71) from top to bottom, the guide sleeve I (73) is movably sleeved on the middle lower part of the thread mold core external member (72), the guide sleeve I (73) is fixedly installed on the movable template (3), and a movable spline structure which is arranged along the axis direction of the shaft core rod (71) is formed between the thread mold core external member (72) and the guide sleeve I (73); the positioning support sleeve (74) is rotatably arranged on the supporting plate (4); the bottom of the mandrel bar (71) is rotatably arranged on the bottom needle plate (5); the side part of the mould is provided with a thread removing driving motor (6), the thread removing driving motor (6) is connected with a transmission connecting sleeve (75) through a belt or a chain in a transmission way, and the transmission connecting sleeve (75) is in synchronous transmission fit with the shaft core rod (71).
2. The mold for simultaneously stripping the undercut demolding structure with the spline and the thread stripping as claimed in claim 1, wherein: and bearings (78) are respectively arranged between the positioning supporting sleeve (74) and the supporting plate (4) and between the shaft core rod (71) and the bottom needle plate (5).
3. The mold for simultaneously stripping the undercut demolding structure with the spline and the thread stripping as claimed in claim 1, wherein: the bottom of the shaft core rod (71) is sleeved with a second guide sleeve (76), and the top of the second guide sleeve (76) movably abuts against the transmission connecting sleeve (75).
4. The mold for simultaneously stripping the undercut demolding structure with the spline and the thread stripping as claimed in claim 1, wherein: the circumference of the transmission connecting sleeve (75) is transversely provided with a connecting ring (751) in a protruding mode, and a transmission chain is connected between the connecting ring (751) and the thread-removing driving motor (6).
5. The mold for simultaneously stripping the undercut demolding structure with the spline and the thread stripping as claimed in claim 1, wherein: the bottom needle plate (5) is transversely provided with an assembly base (77) at intervals, the center of the assembly base (77) is provided with a connecting hole which penetrates through the assembly base from top to bottom, the bottom of the connecting hole is provided with a bottom sinking hole, a transverse convex limiting ring is formed at the bottom of the shaft core rod (71), the shaft core rod (71) movably penetrates through the connecting hole, and the limiting ring is embedded and installed in the bottom sinking hole.
6. The mold for simultaneously stripping the undercut demolding structure with the spline and the thread stripping as claimed in claim 1, wherein: the fixed die plate (2) is provided with a nozzle (43), and an opening of the nozzle (43) extends to the injection die core cavity.
7. The mold for simultaneously stripping the thread and forcibly stripping the back-off mold structure with the spline according to any one of claims 1 to 6, wherein: at least one chain guide shaft (44) is arranged in the supporting plate (4), and each chain guide shaft (44) is movably sleeved on the belt or the chain respectively.
8. The mold for simultaneously stripping the thread and forcibly stripping the back-off mold structure with the spline according to any one of claims 1 to 6, wherein: an inverted mould core is arranged between the threaded mould core external member (72) and the shaft core rod (71).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022821616.9U CN213733186U (en) | 2020-11-30 | 2020-11-30 | Take spline to take off screw thread and take off mould of back-off demolding structure by force simultaneously |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022821616.9U CN213733186U (en) | 2020-11-30 | 2020-11-30 | Take spline to take off screw thread and take off mould of back-off demolding structure by force simultaneously |
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| Publication Number | Publication Date |
|---|---|
| CN213733186U true CN213733186U (en) | 2021-07-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022821616.9U Active CN213733186U (en) | 2020-11-30 | 2020-11-30 | Take spline to take off screw thread and take off mould of back-off demolding structure by force simultaneously |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117001949A (en) * | 2023-08-17 | 2023-11-07 | 常州市升越模塑股份有限公司 | Screw thread starting point adjustable die and manufacturing method thereof |
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2020
- 2020-11-30 CN CN202022821616.9U patent/CN213733186U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117001949A (en) * | 2023-08-17 | 2023-11-07 | 常州市升越模塑股份有限公司 | Screw thread starting point adjustable die and manufacturing method thereof |
| CN117001949B (en) * | 2023-08-17 | 2024-01-26 | 常州市升越模塑股份有限公司 | Screw thread starting point adjustable die and manufacturing method thereof |
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