Single-section type twisted tooth mold

Abstract

The utility model relates to the technical field of thread twisting dies, and discloses a single-section type thread twisting die which comprises a top plate, ejector plates and a bottom plate, the top plate and the two ejector plates are fixedly installed, and one side of the bottom plate is fixedly connected with a bearing gear fixing plate. After injection molding, firstly, the template is controlled to be opened, so that the bearing gear fixing plate is opened by a distance of 40-50cm, and a space for tooth retreating is reserved (at the moment, a parting surface is in a sealed state), namely, tooth twisting is started (the rear section of a tooth core is not provided with any auxiliary retreating tooth, and the tooth core is totally retreated by virtue of thrust of teeth of a product); according to the structure, the situation that a tooth core of a retreating tooth structure needs to be of a two-section tooth structure is mainly avoided, a single-section tooth pushes the tooth core through the product, so that the mold structure is optimized, the production efficiency is greatly improved, the mold is prevented from being jammed, the precision of the tooth twisting mold is effectively improved, and the service life of the tooth twisting mold is effectively prolonged; and meanwhile, the manufacturing cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of twist-thread molds, in particular to a single-section twist-thread mold. Background Art

[0002] A threaded die is a mold specifically designed for producing threads, commonly used in injection molding. This mold is capable of producing workpieces with complex threads, such as bolts and nuts. The design of threaded die (also known as helical gear die or thread die) is a key technology in the precision manufacturing of plastic products. This involves the molding of plastic helical gears, which are widely used in automotive, aerospace, medical devices, and everyday consumer products.

[0003] At present, there are some technical bottlenecks in the manufacturing process of plastic products with existing thread-cutting molds, such as low thread-cutting precision, the tooth core in the tooth-recessed structure must have a two-section tooth structure, and the mold is stuck, resulting in reduced production efficiency.

[0004] The utility model provides a single-stage thread-cutting mold. After injection molding, the template is first controlled to open 40-50 cm to leave enough space for the teeth to retreat (the parting surface is in a sealed state at this time) → the thread-cutting begins (there are no auxiliary teeth for retreating in the rear section of the tooth core, and the tooth core is completely retreated by the thrust of the product's teeth). After all the teeth are retreated to the outside of the product teeth, the thread-cutting is completed, and the mold is immediately opened → the product is ejected and taken out. This structure mainly eliminates the need for a two-stage tooth structure for the tooth core of the retreating tooth structure. The single-stage tooth relies on the product to push the tooth core, thereby optimizing the mold structure, greatly improving production efficiency and avoiding mold jamming, effectively improving the precision and life of the thread-cutting mold, and reducing manufacturing costs. Utility Model Content

[0005] The purpose of the present utility model is to provide a single-stage thread cutting die to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a single-stage thread cutting mold, comprising a top plate, an ejector plate, and a bottom plate, wherein the top plate is fixedly installed with two ejector plates, and a bearing gear fixing plate is fixedly connected to one side of the bottom plate, and a female template and a male template are arranged between the ejector plate and the bearing gear fixing plate, and two mold bladders are arranged between the female template and the male template, and plastic products are cast in the mold bladders, and a mechanical transmission structure is arranged between one of the mold bladders and the bearing gear fixing plate.

[0007] Preferably, the mechanical transmission structure includes a transmission motor, the output end of the transmission motor is fixedly connected to transmission gear 1, the transmission gear 1 is meshedly connected to transmission gear 2, and the transmission gear 2 is movably connected between the male template and the bearing gear fixing plate through an axis, the transmission gear 2 is meshedly connected to transmission gear 3, the transmission gear 3 is meshedly connected to transmission gear 4, and the transmission gear 4 is movably connected between the male template and the bearing gear fixing plate through an axis, and the transmission gear 4 is meshedly connected to transmission gear 5.

[0008] Preferably, a threaded shaft is fixedly connected to the inner holes of the transmission gear three and the transmission gear five, and a threaded core is provided at the other end of the threaded shaft.

[0009] The utility model provides a single-stage thread cutting die. It has the following beneficial effects:

[0010] (1) The utility model further engages with the threaded shaft through the transmission gear 3 and the transmission gear 5, and realizes efficient and accurate driving of the threaded shaft through a series of gear transmission, thereby ensuring the stability and accuracy of the threaded mold when processing plastic products.

[0011] (2) After the present invention is injection molded, the template is first controlled to open so that the bearing gear fixing plate is opened 40-50cm away, leaving enough space for the teeth to retreat (the parting surface is sealed at this time), that is, the threading begins (there is no auxiliary thread retreat at the rear of the core, and the core is completely pushed back by the thrust of the product's teeth). After all the teeth are retreated to the outside of the product, the threading is completed, and the mold is opened immediately, and the product is ejected and taken out. This structure mainly eliminates the need for the core of the tooth structure with two sections of teeth. The single-section tooth relies on the product to push the core, thereby optimizing the mold structure, greatly improving production efficiency and avoiding mold jamming, effectively improving the precision and life of the threading mold, and reducing manufacturing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a three-dimensional diagram of the overall structure of the utility model;

[0013] Figure 2 This is a schematic cross-sectional view of the overall structure of the utility model;

[0014] Figure 3 This is a view of the mechanical transmission structure of the utility model.

[0015] In the figure: top plate 11, ejector plate 12, bottom plate 13, female template 14, male template 15, mold liner 16, plastic product 17, bearing gear fixing plate 18, mechanical transmission structure 2, transmission motor 21, transmission gear 1 22, transmission gear 2 23, transmission gear 3 24, transmission gear 4 25, transmission gear 5 26, threaded shaft 27, threaded core 28. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0017] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0018] A preferred embodiment of a single-stage thread cutting die provided by the present invention is as follows: Figure 1-3 As shown: A single-stage thread cutting die, including a top plate 11, an ejector plate 12, and a bottom plate 13. The top plate 11 is fixedly installed with two ejector plates 12. A bearing gear fixing plate 18 is fixedly connected to one side of the bottom plate 13. A female template 14 and a male template 15 are arranged between the ejector plate 12 and the bearing gear fixing plate 18. Two mold bladders 16 are arranged between the female template 14 and the male template 15. A plastic product 17 is cast in the mold bladders 16. A mechanical transmission structure 2 is arranged between one of the mold bladders 16 and the bearing gear fixing plate 18.

[0019] The mechanical transmission structure 2 includes a transmission motor 21, the output end of which is fixedly connected to a transmission gear 1 22, which is meshed with a transmission gear 2 23. The transmission gear 2 23 is movably connected between the male mold plate 15 and the bearing gear fixing plate 18 via a shaft. The transmission gear 2 23 is meshed with a transmission gear 3 24, which is meshed with a transmission gear 4 25. The transmission gear 4 25 is movably connected between the male mold plate 15 and the bearing gear fixing plate 18 via a shaft, and the transmission gear 4 25 is meshed with a transmission gear 5 26. The transmission gears 3 24 and 5 26 further mesh with the threaded shaft 27. Through a series of gear transmissions, the threaded shaft 27 is efficiently and accurately driven, ensuring the stability and precision of the threaded mold when processing plastic products 17. In addition, the structural design is reasonable and easy to maintain, reducing production costs and improving production efficiency, meeting the development needs of the modern manufacturing industry.

[0020] A threaded shaft 27 is fixedly connected to the inner bores of transmission gears 3 24 and 5 26, and a threaded core 28 is located at the other end of the threaded shaft 27. During the transmission process, the precise gearing of the threaded shaft 27 ensures the stable operation of the threaded core 28, ensuring efficient and accurate production of the threaded mold. This ingenious structural design not only simplifies the threaded mold manufacturing process but also improves the overall quality of the product, providing a strong guarantee for the molding of plastic products 17. It also reduces production costs, extends the service life of the mold, and further improves production efficiency.

[0021] During use, after injection molding, the template is first controlled to open so that the bearing gear fixing plate 18 is opened 40-50cm away, leaving enough space for the teeth to retreat (the parting surface is sealed at this time), that is, the threading begins (there is no auxiliary thread retreat in the rear section of the thread core, and the thread core is completely retreated by the thrust of the product's teeth). After all the threads are retreated to the outside of the product's teeth, the threading is completed, and the mold is immediately opened, and the product is ejected and taken out. This structure mainly eliminates the need for a two-section thread structure for the thread core of the retreating thread structure. The single-section thread relies on the product to push the thread core, thereby optimizing the mold structure, greatly improving production efficiency and avoiding mold jamming, effectively improving the precision and life of the threading mold, and reducing manufacturing costs.

[0022] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A single-stage thread cutting die, comprising a top plate (11), an ejector plate (12), and a bottom plate (13), characterized in that: The top plate (11) is fixedly mounted on two ejector plates (12); a bearing gear fixing plate (18) is fixedly connected to one side of the bottom plate (13); a female template (14) and a male template (15) are arranged between the ejector plate (12) and the bearing gear fixing plate (18); two mold cavities (16) are arranged between the female template (14) and the male template (15); a plastic product (17) is cast inside the mold cavities (16); and a mechanical transmission structure (2) is arranged between one of the mold cavities (16) and the bearing gear fixing plate (18).

2. A single-stage thread cutting die according to claim 1, characterized in that: The mechanical transmission structure (2) includes a transmission motor (21), the output end of the transmission motor (21) is fixedly connected to a transmission gear 1 (22), the transmission gear 1 (22) is meshedly connected to a transmission gear 2 (23), and the transmission gear 2 (23) is movably connected between a male template (15) and a bearing gear fixing plate (18) through a shaft, the transmission gear 2 (23) is meshedly connected to a transmission gear 3 (24), the transmission gear 3 (24) is meshedly connected to a transmission gear 4 (25), and the transmission gear 4 (25) is movably connected between a male template (15) and a bearing gear fixing plate (18) through a shaft, and the transmission gear 4 (25) is meshedly connected to a transmission gear 5 (26).

3. The single-stage thread cutting die according to claim 2, characterized in that: A twisted tooth shaft (27) is fixedly connected to the inner holes of the transmission gear three (24) and the transmission gear five (26), and a tooth core (28) is provided at the other end of the twisted tooth shaft (27).

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