Small-diameter internal thread twisted thread demolding mechanism

Abstract

The utility model relates to the technical field of thread twisting molds, and discloses a small-diameter internal thread thread twisting demolding mechanism which comprises a top seat, a base is arranged under the top seat, a sprue bush used for feeding is fixedly installed at the center of the top face of the top seat in a penetrating mode, the sprue bush is vertically arranged, and an upper end opening of the sprue bush is located in a containing hole in the top of the top seat. Two spacing plates are arranged on the top face of the base, two ejector pin plates are arranged between the two spacing plates, and positioning guide columns are arranged between the tops of the two spacing plates and the bottom of the top base. Through the optimized design of the twisted tooth demolding driving device, a product is more stable in the demolding process, damage to the product caused by demolding is reduced, the qualified rate and the production efficiency of the product are improved, and the problems that in the injection molding process of a traditional mode, the tedious operation that a copper nut needs to be placed in, the twisted tooth clamping stagnation phenomenon is likely to happen, and the product quality is poor are solved. And the product is difficult to demould.

Description

Technical Field

[0001] This utility model relates to the field of threaded die technology, specifically a small-diameter internal threaded die release mechanism. Background Technology

[0002] A coiled thread release mold is a type of mold used in injection molding. Its main function is to ensure that plastic parts can be smoothly removed from the mold during the injection molding process through a rotation and release mechanism, while avoiding deformation or cracking. The design of a coiled thread release mold typically includes a rotating mechanism that uses gears or a motor to drive the thread to rotate, thereby achieving demolding.

[0003] For small-diameter internal thread products, due to the small thread diameter and the close center distance between the two threads, a copper nut needs to be inserted first before injection molding. This increases the manual insertion operation, which is inefficient. Furthermore, fixing the copper nut during injection molding is also cumbersome and can easily cause thread jamming, making it difficult to demold the product and affecting production efficiency.

[0004] Therefore, this utility model provides a small-diameter internal thread retractor demolding mechanism. Utility Model Content

[0005] The purpose of this invention is to provide a small-diameter internal thread reamer demolding mechanism to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a small-diameter internal thread auger demolding mechanism, comprising a top seat with a base directly below it. A sprue sleeve for feeding material is fixedly installed through the center of the top surface of the top seat, and the sprue sleeve is vertically arranged. The upper end of the sprue sleeve is located in the placement hole at the top of the top seat. Two partition plates are provided on the top surface of the base, and two ejector plates are provided between the two partition plates. A positioning guide post is provided between the top of the two partition plates and the bottom of the top seat, and an upper demolding template and a lower demolding template are provided on the positioning guide post. An auger demolding driving device is provided on one side of the outer wall of the lower demolding template. Two sets of upper mold cores and lower mold cores are provided between the upper and lower mold cores, and a product is provided between the upper and lower mold cores. Sliding delay extraction components are provided on both sides of the outer walls of the two sets of upper and lower mold cores.

[0007] Two sliders are provided between the two products, and a braking block is provided between the two sliders. A bridging flow channel block is also provided between the two products.

[0008] Preferably, the retractable mold release drive device includes a sliding fixing plate 1 installed on the other side of the upper mold core and the lower mold core, a sliding fixing plate 2 installed on the outer wall of the sliding fixing plate 1, a sliding fixing plate 3 installed on the outer wall of the sliding fixing plate 2, a sliding fixing plate 4 installed on the outer wall of the sliding fixing plate 3, an extension seat installed on the outer wall of the sliding fixing plate 4, and an mounting base fixedly installed on the outer wall of the extension seat. A hydraulic motor and a hydraulic cylinder are respectively installed on the mounting base.

[0009] Preferably, the output end of the hydraulic motor is fixedly connected to a drive shaft, the other end of the drive shaft passes through the extended seat via a wear-resistant bushing and extends to the other side of the extended seat, and the end of the drive shaft is fixedly connected to a drive gear, and two driven gears are meshed on both sides of the drive gear, and both driven gears are installed between the extended seat and the sliding fixed plate two via driven shafts.

[0010] Preferably, a support rod is installed inside the sliding fixing plate three, and the other end of the support rod is movably connected to a coiled core through a needle roller bearing. The coiled core is located between the interior of the sliding fixing plate two and the sliding fixing plate one. The coiled core is meshed with two driven gears, and the other end of the coiled core extends into the interior of the product for coiling.

[0011] Preferably, the sliding fixing plate two is internally fixedly connected with a shaped small insert. The design of the shaped small insert matches the internal cavity structure of the product and can effectively provide support and positioning during the product threading process, ensuring product quality.

[0012] Preferably, a T-shaped block is fixedly connected to the output end of the hydraulic cylinder, and the T-shaped block is connected to the sliding fixed plate.

[0013] Preferably, the sliding delay extraction assembly includes a slider seat, a slider fixing plate is installed on the inner side of the slider seat, a second slider is installed on the inner side of the slider fixing plate, which works together with the first slider to cooperate with each other, an inclined guide post is provided through the slider seat, and a second braking block is installed on the outer wall of the slider seat.

[0014] This utility model provides a small-diameter internal thread reamer demolding mechanism. It has the following beneficial effects:

[0015] (1) This utility model optimizes the design of the toothed demolding drive device, making the product more stable during demolding, reducing the damage caused by demolding, improving the product qualification rate and production efficiency, and solving the problem that the traditional method requires the insertion of copper nuts during injection molding, and is prone to toothed jamming, which leads to product demolding difficulties.

[0016] (2) This utility model pre-starts the oil cylinder, which pushes the T-block, the T-block pushes the sliding fixing plate four, the sliding fixing plate three, and the sliding fixing plate two, and finally drives the molded small insert inside the sliding fixing plate two to retract. At this time, the hydraulic motor is started, the hydraulic motor drives the drive gear, the drive gear drives two driven gears, and the two driven gears drive the auger core, thereby realizing the precise processing of the internal threads of the product by the auger core. Attached Figure Description

[0017] Figure 1 This is a perspective view of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the upper mold core and lower mold core structure of this utility model;

[0019] Figure 3 This is a structural view of the product of this utility model;

[0020] Figure 4 This is a bottom view of the coiled tooth release drive device of this utility model;

[0021] Figure 5 This is a top view of the coiled tooth release drive device of this utility model;

[0022] Figure 6 This is a view of the sliding delay extraction component of this utility model.

[0023] In the diagram: Top seat 21, base 22, upper ejector plate 23, lower ejector plate 24, partition plate 25, ejector plate 26, upper mold core 27, lower mold core 28, product 29, slider one 210, brake block one 211, bridge runner block 212, auger ejection drive device 3, extended seat 311, sliding fixing plate four 312, sliding fixing plate three 313, sliding fixing plate two 314, sliding fixing plate one 315, hydraulic motor 321, drive shaft 322, drive gear 323, driven gear 324, auger core 325, molding small insert 326, sliding delay extraction assembly 4, slider seat 41, slider fixing plate 42, slider two 43, inclined guide post 44, brake block two 45. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0026] A preferred embodiment of the small-diameter internal thread coiled tooth release mechanism provided by this utility model is, for example... Figure 1-4 As shown: A small-diameter internal thread auger demolding mechanism includes a top seat 21, with a base 22 directly below it. A sprue sleeve for feeding is fixedly installed through the center of the top surface of the top seat 21, and the sprue sleeve is vertically arranged. The upper end of the sprue sleeve is located in the placement hole at the top of the top seat 21. Two partition plates 25 are provided on the top surface of the base 22, and two ejector plates 26 are provided between the two partition plates 25. A positioning guide post is provided between the top of the two partition plates 25 and the bottom of the top seat 21, and an upper demolding plate 23 and a lower demolding plate 24 are provided on the positioning guide post. An auger demolding drive device 3 is provided on one side of the outer wall of the lower demolding plate 24. Two sets of upper mold cores 27 and lower mold cores 28 are provided between the upper mold cores 23 and the lower demolding plate 24. A product 29 is provided between the upper mold cores 27 and the lower mold cores 28. Sliding delay extraction components 4 are provided on both sides of the outer walls of the two sets of upper mold cores 27 and lower mold cores 28.

[0027] Two sliders 210 are provided between the two products 29, and a clamping block 211 is provided between the two sliders 210. A bridging flow channel block 212 is also provided between the two products 29.

[0028] The retractable mold release drive device 3 includes a sliding fixing plate 315 installed on the other side of the upper mold core 27 and the lower mold core 28. A sliding fixing plate 314 is installed on the outer wall of the sliding fixing plate 315. A sliding fixing plate 313 is installed on the outer wall of the sliding fixing plate 314. A sliding fixing plate 312 is installed on the outer wall of the sliding fixing plate 313. An extension seat 311 is installed on the outer wall of the extension seat 312. A mounting base is fixedly installed on the outer wall of the extension seat 311. A hydraulic motor 321 and a cylinder 327 are respectively installed on the mounting base.

[0029] The output end of the hydraulic motor 321 is fixedly connected to the drive shaft 322. The other end of the drive shaft 322 passes through the extended seat 311 through a wear-resistant bushing and extends to the other side of the extended seat 311. The end of the drive shaft 322 is fixedly connected to the drive gear 323. Two driven gears 324 are meshed on both sides of the drive gear 323. Both driven gears 324 are installed between the extended seat 311 and the sliding fixed plate 314 through the driven shaft.

[0030] A support rod is installed inside the sliding fixed plate 313. The other end of the support rod is movably connected to a coiled core 325 via a needle roller bearing. The coiled core 325 is located between the sliding fixed plate 214 and the sliding fixed plate 1 315. The coiled core 325 is meshed with two driven gears 324. The other end of the coiled core 325 extends into the interior of the product 29 for coiling. A molded small insert 326 is fixedly connected inside the sliding fixed plate 214. The design of the molded small insert 326 matches the internal cavity structure of the product 29 and can effectively provide support and positioning during the coiling process of the product 29, ensuring product quality.

[0031] Furthermore, the coiling core requires a high hardness (HRC60°) of DC53 material to withstand the rotation of the coiling teeth. During the coiling process of product 29, the precise positioning and high hardness of the coiling core 325 are crucial. The surface of the coiling core 325 undergoes special treatment to improve its wear resistance and corrosion resistance, ensuring that it maintains its accuracy during long-term use.

[0032] A T-block is fixedly connected to the output end of the hydraulic cylinder 327, and the T-block is connected to the sliding fixed plate 312. During the threading process, the hydraulic cylinder 327 pushes the T-block, which in turn pushes the sliding fixed plate 312, the sliding fixed plate 313, and the sliding fixed plate 314. This ultimately causes the molded small insert 326 inside the sliding fixed plate 314 to retract. The hydraulic motor 321 drives the threading core 325 to thread the product through gears. After the threading is completed, the ejector pin pushes the product out.

[0033] The sliding delay extraction assembly 4 includes a slider seat 41, a slider fixing plate 42 is installed on the inner side of the slider seat 41, a second slider 43 is installed on the inner side of the slider fixing plate 42, which works together with the first slider 210. An inclined guide post 44 is provided through the slider seat 41, and a second braking block 45 is installed on the outer wall of the slider seat 41.

[0034] During use, when the mold is closed, the injection molded product is processed. When the mold is opened, thread rewinding is required first. However, before thread rewinding, the hydraulic cylinder 327 is activated in advance, which pushes the T-block. The T-block pushes the sliding fixed plate 4 312, the sliding fixed plate 313, and the sliding fixed plate 2 314, which in turn drives the small molding insert 326 inside the sliding fixed plate 2 314 to retract. At this time, the hydraulic motor 321 is activated, which drives the drive gear 323. The drive gear 323 drives two driven gears 324, which in turn drive the thread rewinding core 325, thereby enabling the thread rewinding core 325 to precisely process the internal threads of the product 29.

[0035] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A small-diameter internal thread auger demolding mechanism, comprising a top seat (21) and a base (22) disposed directly below it, characterized in that, A sprue sleeve for feeding is fixedly installed through the center of the top surface of the top seat (21), and the sprue sleeve is vertically arranged. The upper end of the sprue sleeve is located in the placement hole at the top of the top seat (21). Two spacer plates (25) are provided on the top surface of the base (22), and two ejector plates (26) are provided between the two spacer plates (25). A positioning guide post is provided between the top of the two spacer plates (25) and the bottom of the top seat (21), and the positioning guide post is provided with... There are an upper ejector template (23) and a lower ejector template (24). A toothed ejector drive device (3) is provided on one side of the outer wall of the lower ejector template (24). Two sets of upper mold cores (27) and lower mold cores (28) are provided between the upper ejector template (23) and the lower ejector template (24). A product (29) is provided between the upper mold cores (27) and the lower mold cores (28). Sliding delay extraction components (4) are provided on both sides of the outer walls of the two sets of upper mold cores (27) and lower mold cores (28). Two sliders (210) are provided between the two articles (29), and a braking block (211) is provided between the two sliders (210). A bridging flow channel block (212) is also provided between the two articles (29).

2. The small-diameter internal thread auger demolding mechanism according to claim 1, characterized in that: The coiled tooth demolding drive device (3) includes a sliding fixing plate 1 (315) installed on the other side of the upper mold core (27) and the lower mold core (28). A sliding fixing plate 2 (314) is installed on the outer wall of the sliding fixing plate 1 (315). A sliding fixing plate 3 (313) is installed on the outer wall of the sliding fixing plate 2 (314). A sliding fixing plate 4 (312) is installed on the outer wall of the sliding fixing plate 4 (312). An extension seat (311) is installed on the outer wall of the extension seat (311). A mounting base is fixedly installed on the outer wall of the extension seat (311). A hydraulic motor (321) and a cylinder (327) are respectively installed on the mounting base.

3. The small-diameter internal thread auger demolding mechanism according to claim 2, characterized in that: The output end of the hydraulic motor (321) is fixedly connected to a drive shaft (322). The other end of the drive shaft (322) passes through the extension seat (311) through a wear-resistant bushing and extends to the other side of the extension seat (311). The end of the drive shaft (322) is fixedly connected to a drive gear (323). Two driven gears (324) are meshed on both sides of the drive gear (323). Both driven gears (324) are installed between the extension seat (311) and the sliding fixed plate (314) through driven shafts.

4. The small-diameter internal thread auger demolding mechanism according to claim 2, characterized in that: A support rod is installed inside the sliding fixing plate three (313). The other end of the support rod is movably connected to a coiled core (325) via a needle roller bearing. The coiled core (325) is located between the sliding fixing plate two (314) and the sliding fixing plate one (315). The coiled core (325) is meshed with two driven gears (324). The other end of the coiled core (325) extends into the interior of the product (29) for coiling.

5. A small-diameter internal thread auger demolding mechanism according to claim 2, characterized in that: The sliding fixing plate 2 (314) is internally fixedly connected to a molded small insert (326). The design of the molded small insert (326) matches the internal cavity structure of the product (29) and can effectively provide support and positioning during the threading process of the product (29) to ensure product quality.

6. A small-diameter internal thread auger demolding mechanism according to claim 2, characterized in that: The output end of the hydraulic cylinder (327) is fixedly connected to a T-shaped block, which is connected to the sliding fixed plate (312).

7. The small-diameter internal thread auger demolding mechanism according to claim 1, characterized in that: The sliding delay extraction assembly (4) includes a slider seat (41), a slider fixing plate (42) is installed on the inner side of the slider seat (41), a second slider (43) is installed on the inner side of the slider fixing plate (42), which works together with the first slider (210). An inclined guide post (44) is provided through the slider seat (41), and a second braking block (45) is installed on the outer wall of the slider seat (41).

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