CN108177302B

CN108177302B - Thread adjusting die

Info

Publication number: CN108177302B
Application number: CN201711403942.4A
Authority: CN
Inventors: 项志亮
Original assignee: Suzhou Haiming Packaging Technology Co ltd
Current assignee: Suzhou Haiming Packaging Technology Co ltd
Priority date: 2017-12-22
Filing date: 2017-12-22
Publication date: 2023-12-12
Anticipated expiration: 2037-12-22
Also published as: CN108177302A

Abstract

The invention provides a thread tooth adjusting die which comprises a rack, wherein at least one gear assembly is meshed with the rack, the gear assembly comprises a core, an internal gear and an external gear, the internal gear is sleeved on the core, the external gear is sleeved on the internal gear in a meshed manner, and further the teeth number of the internal gear is odd, and the teeth number of the external gear is even. Compared with the prior art, the invention not only ensures the demoulding strength of the gear, but also can accurately adjust the tooth direction of the core of the thread, thereby ensuring the accurate adjustment of the tooth direction of the multi-cavity product, improving the quality of the product and reducing the manufacturing cost of the mould.

Description

Thread adjusting die

Technical Field

The invention relates to a die, in particular to a thread adjusting die.

Background

Currently, many screw products, particularly plastic screw products, require precise alignment, such as screw connection between the case body and the case cover.

In a conventional mold structure, in order to adjust the tooth direction of the screw, a gear is usually installed in the mold to achieve the adjustment. However, during use, it has been found that adjusting by only one gear to achieve both the mold release strength of the product and the tooth orientation of the product is not excellent, and in particular, for multi-cavity molds, it is also desirable to ensure overall consistency.

Disclosure of Invention

In view of the above, the invention provides the thread adjusting die which can achieve both demolding strength and accurate tooth direction adjustment and meet the requirement of multi-cavity consistency.

The invention provides a thread tooth adjusting die which comprises a rack, wherein at least one gear assembly is meshed with the rack, the gear assembly comprises a core, an inner gear and an outer gear, the inner gear is sleeved on the core, and the outer gear is sleeved on the inner gear in a meshed manner.

Further, the core is provided with a mandrel, and a shaft sleeve is sleeved on the mandrel.

Further, one end of the mandrel forms a conical head.

Further, the diameter of the external gear is 2-4 times that of the internal gear.

Further, the number of teeth of the internal gear is an odd number, and the number of teeth of the external gear is an even number.

Further, the number of teeth of the internal gear is one more than the number of teeth of the external gear.

Further, the above-described internal gear and external gear simultaneously rotate clockwise by one tooth, and then the internal gear rotates counterclockwise by one tooth.

The invention provides a thread tooth adjusting die which is provided with a rack, wherein at least one gear assembly is meshed with the rack, the gear assembly comprises a core, an internal gear and an external gear, the internal gear is sleeved on the core, and the external gear is meshed with the internal gear; adding an internal gear into the external gear, and further setting the number of teeth of the internal gear to be an odd number and the number of teeth of the external gear to be an even number; thus, the demolding strength of the gear is ensured, and the tooth direction of the core of the thread can be accurately adjusted, so that the tooth direction of a multi-cavity product can be accurately adjusted, the quality of the product is improved, and the manufacturing cost of the mold is reduced.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:

fig. 1 is a schematic structural view of a thread adjusting die according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a gear assembly of a thread adjusting die according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a core of a thread adjusting die according to an embodiment of the present invention;

fig. 4 is a schematic structural view of an external gear and an internal gear of a thread adjusting die according to an embodiment of the present invention;

fig. 5 is a schematic rotation diagram of an external gear and an internal gear of a thread adjusting die according to an embodiment of the present invention;

fig. 6 is a schematic diagram showing the dislocation of the cover and the bottom of a square cosmetic box in a thread adjusting die according to an embodiment of the present invention;

fig. 7 is a schematic diagram of alignment of a cover and a bottom of a square cosmetic case in a thread adjusting die according to an embodiment of the present invention.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

Embodiment one:

referring to fig. 1 to 3, a thread adjusting die according to a first embodiment of the present invention is shown, and includes a rack 1, a plurality of gear assemblies 2 (only one may be used, and selected according to production requirements) are meshed with the rack 1, the gear assemblies 2 include a core 21, an inner gear 22 and an outer gear 23, the inner gear 22 is sleeved on the core 21, and the outer gear 23 is meshed with the inner gear 22.

The embodiment provides a thread tooth adjusting die, which is provided with a rack, wherein at least one gear assembly is meshed with the rack, the gear assembly comprises a core, an internal gear and an external gear, the internal gear is sleeved on the core, and the external gear is meshed with the internal gear; the internal gear is added in the external gear, so that the demolding strength of the gear is guaranteed, and meanwhile, the tooth direction of the core of the thread can be accurately adjusted, so that the tooth direction of a multi-cavity product can be accurately adjusted, the quality of the product is improved, and the manufacturing cost of the mold is reduced.

Embodiment two:

referring to fig. 1 to 3, a thread adjusting die provided by a second embodiment of the present invention is shown, and the present embodiment further provides the following technical solutions as improvements based on the foregoing embodiments: the core 21 has a core shaft 211, and a sleeve 212 is fitted over the core shaft 211. Through the arrangement of the structure, the structure of the core can be more stable.

Embodiment III:

referring to fig. 1 to 3, a thread adjusting die according to a third embodiment of the present invention is shown, and the present embodiment further provides the following technical solutions as improvements based on the foregoing embodiments: one end of the mandrel 211 forms a tapered head 217. By this arrangement, the gear assembly can be prevented from being offset in the axial direction. Wherein the thread forms a thread start 214.

Embodiment four:

referring to fig. 1 to 3, a thread adjusting die provided in a fourth embodiment of the present invention is shown, and the present embodiment further provides the following technical solutions as improvements based on the foregoing embodiments: the diameter of the external gear 23 is 2-4 times the diameter of the internal gear 22. Through the arrangement of the structure, the axial offset generated after the weight of the gear assembly is increased can be reduced, through calculation, the shaking phenomenon of the product can be effectively prevented when the technology between 2 and 4 times is valued, and through recording, when the technology is 3.3 times, the axial offset of the product is only 1.4 degrees, and when the technology is 2.3 degrees, the technology is 4 times and 2.6 degrees, the axial offset is kept, so that the machining precision is higher.

Fifth embodiment:

referring to fig. 4 to 7, a thread adjusting die provided in a fifth embodiment of the present invention is shown, and the present embodiment further provides the following technical solutions as improvements based on the foregoing embodiments: the number of teeth of the internal gear 22 is an odd number, and the number of teeth of the external gear 23 is an even number. The tooth direction of the mold core of the thread can be accurately adjusted while the demolding strength of the gear is ensured, so that the tooth direction of a multi-cavity product can be accurately adjusted, the quality of the product is improved, and the manufacturing cost of the mold is reduced.

Referring to fig. 5, the number of teeth of the inner gear 22 is one tooth (rotated by 10 °) more than the number of teeth of the outer gear 23, the inner gear 22 and the outer gear 23 are simultaneously rotated clockwise by one tooth (9.73 °), and then the inner gear 22 is rotated counterclockwise by one tooth, so that the entire core is rotated by only 0.27 ° with respect to the original position, thereby realizing precise fine adjustment.

Referring to fig. 6, after the product is rotated into place, the cover 31 is misaligned with the base 32 (the degree of misalignment may be different); with continued reference to fig. 7, the direction of the product screw is controlled by adjusting the die gear, and after the product is rotated in place, the cover 31 and the bottom 32 are not dislocated, thereby achieving precise adjustment.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. The utility model provides a tooth mould is transferred to screw thread, its characterized in that includes rack (1), meshing has at least one gear assembly (2) on rack (1), gear assembly (2) include core (21), internal gear (22) and external gear (23), internal gear (22) suit in on core (21), external gear (23) meshing suit in on internal gear (22), the number of teeth of internal gear (22) is one tooth more than the number of teeth of external gear (23), internal gear (22) with external gear (23) are clockwise rotatory a tooth simultaneously, then internal gear (22) anticlockwise rotation a tooth.

2. A thread setting die as claimed in claim 1, wherein the core (21) has a mandrel (211), a sleeve (212) is sleeved on the mandrel (211), and one end of the mandrel (211) is exposed out of the sleeve (212) to form a tip (213).

3. A thread setting die as claimed in claim 2, characterized in that the end head (213) has a sleeve (214) outside.

4. A thread setting die as claimed in claim 1, characterized in that the diameter of the external gear (23) is 2-4 times the diameter of the internal gear (22).

5. A thread setting die according to claim 1, characterized in that the number of teeth of the internal gear (22) is an odd number and the number of teeth of the external gear (23) is an even number.