CN217169487U - Die suitable for demoulding internal and external double-layer screw teeth - Google Patents
Die suitable for demoulding internal and external double-layer screw teeth Download PDFInfo
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- CN217169487U CN217169487U CN202120685394.4U CN202120685394U CN217169487U CN 217169487 U CN217169487 U CN 217169487U CN 202120685394 U CN202120685394 U CN 202120685394U CN 217169487 U CN217169487 U CN 217169487U
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- thread insert
- insert
- fluted disc
- ring thread
- thread
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Abstract
The utility model discloses a mould suitable for demoulding of inner and outer double-layer screw threads, which comprises an inner ring screw thread insert and an outer ring screw thread insert, wherein the outer ring screw thread insert is annularly sleeved outside the inner ring screw thread insert, the end part of the inner ring screw thread insert is provided with a first thread for forming an inner layer thread of an injection molding piece, and the end part of the outer ring screw thread insert is provided with a second thread for forming an outer layer thread of the injection molding piece; the first driving mechanism and the second driving mechanism are respectively used for driving the inner ring thread insert and the outer ring thread insert to rotate. The utility model has the advantages that: can carry out the drawing of patterns to the injection molding that has double-deck screw thread, and the drawing of patterns is efficient, and the ride comfort of mechanism's operation is good.
Description
Technical Field
The utility model relates to an injection mold technical field, concretely relates to mould suitable for inside and outside double-deck screw tooth drawing of patterns.
Background
The injection mold is used as a forming tool of plastic products and has the technical advantages of high productivity, high material utilization rate, low cost and the like. The injection mould consists of a movable mould and a fixed mould, wherein the movable mould is arranged on a movable mould plate of the injection moulding machine, the fixed mould is arranged on a fixed mould plate of the injection moulding machine, the movable mould and the fixed mould are closed to form a cavity and a pouring system during injection moulding, and the mould can be opened after injected molten plastics are cooled so that the movable mould and the fixed mould are separated to take out an injection moulding finished product.
For plastic products with a thread structure, how to efficiently and conveniently separate the thread from the cavity after the products are cooled and formed is a technical problem which is continuously optimized in the field, in particular to plastic parts with a double-layer thread structure.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a mould suitable for inside and outside double-deck screw thread drawing of patterns can make the working of plastics that have double-deck helicitic texture high-efficient, demold conveniently.
In order to achieve the above purpose, the utility model discloses technical scheme as follows:
the utility model provides a mould suitable for inside and outside double-deck screw tooth drawing of patterns which the key lies in:
the injection molding machine comprises an inner ring thread insert and an outer ring thread insert, wherein the outer ring thread insert is annularly sleeved outside the inner ring thread insert, the end part of the inner ring thread insert is provided with a first thread for molding an inner layer thread of an injection molding piece, and the end part of the outer ring thread insert is provided with a second thread for molding an outer layer thread of the injection molding piece;
the first driving mechanism and the second driving mechanism are respectively used for driving the inner ring thread insert and the outer ring thread insert to rotate; in the process of rotating the inner ring thread insert, the injection molding piece can move outwards along the axis of the inner ring thread insert so as to separate the inner layer thread from the first thread;
in the rotating process of the outer ring thread insert, the injection molding piece can move outwards along the axis of the outer ring thread insert so as to separate the outer layer thread from the second thread.
Adopt above-mentioned structure, the end shaping back of inner circle thread mold insert and outer lane thread mold insert of inlayer screw thread and the outer layer screw thread of injection molding, first actuating mechanism drive inner circle thread mold insert rotates, the injection molding is because of receiving the reaction force rebound of first screw thread under the circumstances that does not rotate this moment for inlayer screw thread drops from first screw thread, second actuating mechanism drive outer lane thread mold insert rotates, the injection molding is because of receiving the reaction force rebound of second screw thread under the circumstances that does not rotate this moment, make outer screw thread drop from the second screw thread, thereby realize the drawing of patterns of injection molding.
Preferably, the method comprises the following steps: the spring type hydraulic cylinder is characterized by further comprising a first plate group, a second plate group and a third plate group which are sequentially arranged from top to bottom, wherein a first spring is arranged between the second plate group and the third plate group, a second spring is arranged between the first plate group and the second plate group, the first driving mechanism is arranged on the third plate group, and the second driving mechanism is arranged on the second plate group. By adopting the structure, the plate group corresponding to the counter-acting force of the threads and the elasticity of the spring can be driven to move upwards in the demoulding process, so that the demoulding is easier.
Preferably, the method comprises the following steps: the first driving mechanism comprises a first motor, a first fluted disc and a second fluted disc which are meshed with each other, the lower end of the inner ring thread insert is fixedly sleeved on the first fluted disc, and the first motor is in power connection with the second fluted disc through a first chain wheel assembly; the second driving mechanism comprises a second motor, and a third fluted disc and a fourth fluted disc which are meshed with each other, the lower end of the outer ring thread insert is fixedly sleeved on the third fluted disc, and the second motor is in power connection with the fourth fluted disc through a second chain wheel assembly. The first chain wheel assembly and the second chain wheel assembly respectively comprise a chain and two groups of chain discs sleeved in the chain.
By adopting the structure, the motor can drive the corresponding inner ring thread insert or outer ring thread insert to rotate when working, thereby realizing the falling of the thread. The motor and the fluted disc are driven by the chain and the fluted disc, so that the rotating continuity of the inner ring thread insert and the outer ring thread insert can be ensured, and the reverse reset is not needed before the next injection molding piece is molded.
Compared with the prior art, the beneficial effects of the utility model are that:
adopt the utility model provides a mould suitable for inside and outside double-deck screw tooth drawing of patterns to the injection molding that has double-deck screw thread, can realize the drawing of patterns through the reaction force of screw tooth and the elasticity of first spring and second spring, and the drawing of patterns is efficient, and the mechanism runs the ride comfort good.
Drawings
FIG. 1 is a sectional view showing the structure of the mold of the present invention;
FIG. 2 is a schematic structural diagram of an inner ring thread insert, an outer ring thread insert, a first driving mechanism and a second driving mechanism in a mold;
FIG. 3 is a schematic view of a structure of an injection molded part;
FIG. 4 is a cross-sectional view of the mold with the intermediate insert installed therein;
fig. 5 is a partial enlarged view of the point i in fig. 4.
Detailed Description
The present invention will be further described with reference to the following examples and accompanying drawings.
As shown in fig. 1, a mold suitable for demolding of internal and external double-layer threads comprises a first plate group 5, a second plate group 6 and a third plate group 7 which are sequentially arranged from top to bottom, the middles of the first plate group 5, the second plate group 6 and the third plate group 7 are all of a hollow structure, an inner ring thread insert 1 and an outer ring thread insert 2 are rotatably mounted in a hollow section formed by the hollow structure, the inner ring thread insert 1 and the outer ring thread insert 2 are both of a hollow shaft structure, wherein the outer ring thread insert 2 is sleeved outside the inner ring thread insert 1 in a ring manner, a first thread 1a is arranged outside the upper end of the inner ring thread insert 1, a second thread 2a is arranged outside the upper end of the outer ring thread insert 2, a first spring 8 is mounted between the second plate group 6 and the third plate group 7, a second spring 9 is mounted between the first plate group 5 and the second plate group 6, and a first driving mechanism 3 is configured on the third plate group 7, the second plate group 6 is provided with a second driving mechanism 4, and the first driving mechanism 3 and the second driving mechanism 4 are respectively used for driving the inner ring thread insert 1 and the outer ring thread insert 2 to rotate.
As shown in fig. 2, the specific implementation structure of the first driving mechanism 3 for driving the inner ring thread insert 1 to rotate is as follows:
the first driving mechanism 3 comprises a first motor 3c, a first fluted disc 3a and a second fluted disc 3b which are meshed with each other, the lower end of the inner ring thread insert 1 is fixedly sleeved on the first fluted disc 3a, the first motor 3c is in power connection with the second fluted disc 3b through a first chain wheel assembly 3d, and the first motor 3c can drive the inner ring thread insert 1 to rotate when working.
The specific implementation structure of the second driving mechanism 4 for driving the outer ring thread insert 2 to rotate is as follows:
the second driving mechanism 4 comprises a second motor 4c, a third fluted disc 4a and a fourth fluted disc 4b which are meshed with each other, the lower end of the outer ring screw thread insert 2 is fixedly sleeved on the third fluted disc 4a, the second motor 4c is in power connection with the fourth fluted disc 4b through a second chain wheel assembly 4d, and the second motor 4c can drive the outer ring screw thread insert 2 to rotate when working.
As shown in fig. 3, the injection molding member S has two layers of threads, i.e., an inner layer thread a and an outer layer thread b, and after the hot-melt plastic is poured into the mold cavity through the runner of the mold, the inner layer thread a is formed by the first thread 1a on the inner ring thread insert 1, and the outer layer thread b is formed by the second thread 2a on the outer ring thread insert 2.
As shown in fig. 1 again, after the injection molded part S is cooled and formed, the movable mold part of the mold is moved upward, then the first motor 3c drives the inner ring thread insert 1 to rotate, at this time, under the reaction force between the inner layer thread a and the first thread 1a and the upward pushing of the first spring 8, the first plate group 5, the second plate group 6 and the second driving mechanism 4 move upward integrally, and after moving a certain distance, the inner layer thread a is separated from the first thread 1a, and then the first motor 3c stops working. Finally, the second motor 4c drives the outer ring thread insert 2 to rotate, at this time, under the reaction force between the outer layer thread b and the second thread 2a and the upward pushing of the second spring 9, the first plate group 5 moves upward, and the outer layer thread b and the second thread 2a are separated after moving for a certain distance, so that the demolding of the injection molding part S is realized.
As shown in fig. 3, in this embodiment, each of the first sprocket assembly 3d and the second sprocket assembly 4d includes a chain c and two sets of chain discs d sleeved in the chain c, the two sets of chain discs d are respectively connected with corresponding gears and motors, and the motors and the toothed discs are driven by the chain c and the chain discs d, so that the rotating sustainability of the inner ring thread insert 1 and the outer ring thread insert 2 can be ensured, and when the injection-molded parts are produced in batch, the injection-molded parts do not need to be reversely reset between the molding steps.
As shown in fig. 4 and 5, a middle insert 11 is further arranged in the mold, the middle insert 11 is of a shaft-shaped structure and is sleeved inside the inner ring thread insert 1, a positioning inclined surface 11a is arranged at the upper end of the middle insert 11, the lower end of the middle insert 11 is fixedly connected with a top plate 12 in the mold, an inclined surface adapted to the positioning inclined surface 11a is also formed inside the injection molding piece S, and when the injection molding piece S is demolded, the positioning inclined surface 11a can limit the injection molding piece S to rotate, so that the injection molding piece S is more easily moved upwards by the reaction force of the threads.
Further, in order to reduce friction between the inner ring thread insert 1 and the outer ring thread insert 2 and between the inner ring thread insert 1 and the middle insert 11, and to make the movement of the mechanism smoother, lubricating sleeves 10 are respectively disposed between the inner ring thread insert 1 and the outer ring thread insert 2 and between the inner ring thread insert 1 and the middle insert 11.
As shown in fig. 1, the third plate set 7 includes a third upper plate 7a and a third lower plate 7b fixedly connected, and the first toothed disc 3a and the second toothed disc 3b are rotatably mounted between the third upper plate 7a and the third lower plate 7 b; the second plate set 6 includes a second upper plate 6a and a second lower plate 6b fixedly connected to each other, and the third and fourth toothed discs 4a and 4b are rotatably mounted between the second upper plate 6a and the second lower plate 6 b.
Finally, it should be noted that the above description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and the scope of the present invention.
Claims (6)
1. The utility model provides a mould suitable for inside and outside double-deck screw tooth drawing of patterns which characterized in that:
the injection molding machine comprises an inner ring thread insert (1) and an outer ring thread insert (2), wherein the outer ring thread insert (2) is sleeved outside the inner ring thread insert (1), a first thread (1a) is arranged at the end part of the inner ring thread insert (1) and used for molding an inner layer thread (a) of an injection molding piece, and a second thread (2a) is arranged at the end part of the outer ring thread insert (2) and used for molding an outer layer thread (b) of the injection molding piece;
the inner ring thread insert (1) and the outer ring thread insert (2) are respectively driven to rotate by the first driving mechanism (3) and the second driving mechanism (4);
in the rotating process of the inner ring thread insert (1), the injection molding piece can move outwards along the axis of the inner ring thread insert (1) so as to separate the inner layer thread (a) from the first thread (1 a);
in the rotating process of the outer ring thread insert (2), the injection molding piece can move outwards along the axis of the outer ring thread insert (2) so as to separate the outer layer thread (b) from the second thread (2 a);
the first driving mechanism (3) comprises a first motor (3c), and a first fluted disc (3a) and a second fluted disc (3b) which are meshed with each other, the lower end of the inner ring thread insert (1) is fixedly sleeved on the first fluted disc (3a), and the first motor (3c) is in power connection with the second fluted disc (3b) through a first chain wheel assembly (3 d);
the second driving mechanism (4) comprises a second motor (4c), a third fluted disc (4a) and a fourth fluted disc (4b) which are meshed with each other, the lower end of the outer ring thread insert (2) is fixedly sleeved on the third fluted disc (4a), and the second motor (4c) is in power connection with the fourth fluted disc (4b) through a second chain wheel assembly (4 d).
2. The mold for demolding inner and outer double-layer threads as claimed in claim 1, wherein: still including first group of boards (5), second group of boards (6) and third group of boards (7) that from top to bottom set gradually, install first spring (8) between second group of boards (6) and third group of boards (7), install second spring (9) between first group of boards (5) and second group of boards (6), first actuating mechanism (3) set up on third group of boards (7), and second actuating mechanism (4) set up on second group of boards (6).
3. The mold for demolding of inner and outer double-layer threads as claimed in claim 2, wherein:
the third plate group (7) comprises a third upper plate (7a) and a third lower plate (7b) which are fixedly connected, and the first fluted disc (3a) and the second fluted disc (3b) are rotatably arranged between the third upper plate (7a) and the third lower plate (7 b);
the second plate set (6) comprises a second upper plate (6a) and a second lower plate (6b) which are fixedly connected, and the third fluted disc (4a) and the fourth fluted disc (4b) are rotatably installed between the second upper plate (6a) and the second lower plate (6 b).
4. The mold suitable for demolding of internal and external double-layer threads as claimed in claim 3, wherein: the first chain wheel assembly (3d) and the second chain wheel assembly (4d) respectively comprise a chain (c) and two groups of chain discs (d) sleeved in the chain (c).
5. The mold for demolding inner and outer double-layer threads as claimed in claim 1, wherein: an intermediate insert (11) penetrates through the inner ring thread insert (1), and a positioning inclined plane (11a) is arranged at the end part of the intermediate insert (11).
6. The mold for demolding inner and outer double-layer threads as claimed in claim 5, wherein: lubricating sleeves (10) are arranged between the inner ring thread insert (1) and the outer ring thread insert (2) and between the inner ring thread insert (1) and the middle insert (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120685394.4U CN217169487U (en) | 2021-04-02 | 2021-04-02 | Die suitable for demoulding internal and external double-layer screw teeth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120685394.4U CN217169487U (en) | 2021-04-02 | 2021-04-02 | Die suitable for demoulding internal and external double-layer screw teeth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217169487U true CN217169487U (en) | 2022-08-12 |
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ID=82706445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120685394.4U Active CN217169487U (en) | 2021-04-02 | 2021-04-02 | Die suitable for demoulding internal and external double-layer screw teeth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217169487U (en) |
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2021
- 2021-04-02 CN CN202120685394.4U patent/CN217169487U/en active Active
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