Rotary mold opening structure for lens cone

Abstract

The utility model discloses a lens barrel rotary mould opening structure, which comprises a mould body and a mould core rotary driving module, the mould body comprises a front mould plate, a rear mould plate and a mould core assembly, the front mould plate and the rear mould plate are respectively coated at the front end and the rear end of the mould core assembly during mould closing, and the mould core assembly comprises a mould core fixing seat and a mould core body. Threads are arranged at the end, close to the front mold plate, of the mold core body, the mold core body is rotationally arranged on the mold core fixing base, the mold core rotation driving module is arranged on one side of the mold body and is in transmission connection with the mold core body, and a steel ball bearing used for assisting the mold core body to rotate on the mold core fixing base is arranged between the mold core fixing base and the mold core body. And an elastic needle for assisting the threads in twisting and withdrawing is arranged in the mold core body. The lens cone is prepared through the front mold plate, the rear mold plate and the mold core assembly, the mold core rotation driving module drives the mold core assembly to eject out of the lens cone under the assistance of the elastic needle, the thread spirally rotates relative to the lens cone, and the core pulling function is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of barrel rotary mold opening, and particularly relates to a barrel rotary mold opening structure. Background Art

[0002] In the prior art, a barrel is often formed by an injection mold. The outer surface of the existing barrel is often provided with external threads for screwing connection with external equipment. In order to better set the external threads on the outer surface of the barrel, threads are often provided on the core body so as to form external threads on the outer surface of the barrel during injection molding. After injection molding, the threads are generally rotated out of the barrel. The existing way of rotating the threads out of the barrel has problems such as low accuracy, easy damage to the external threads of the barrel during thread cutting and thread withdrawing, and low yield.

[0003] In view of the related art, the existing way of rotating the threads out of the barrel has problems such as low accuracy, easy damage to the external threads of the barrel during thread cutting and thread withdrawing, and low yield, and there is still a lack of a better technical solution. Summary of the Utility Model

[0004] In view of this, it is necessary to provide a barrel rotary mold opening structure to at least solve the problems in the related art that the existing way of rotating the threads out of the barrel has low accuracy, easy damage to the external threads of the barrel during thread cutting and thread withdrawing, and low yield.

[0005] An embodiment of the present application provides a barrel rotary mold opening structure, which includes a mold body and a core rotation driving module. The mold body includes a front template, a rear template and a core assembly. When the mold is closed, the front template and the rear template respectively cover the front and rear ends of the core assembly. The core assembly includes a core fixing seat and a core body. Threads are provided at one end of the core body close to the front template. The core body is rotatably arranged on the core fixing seat. The core rotation driving module is arranged on one side of the mold body and is in transmission connection with the core body. A steel ball bearing for assisting the core body to rotate on the core fixing seat is arranged between the core fixing seat and the core body. A spring pin for assisting the threads to perform thread cutting and thread withdrawing is arranged inside the core body.

[0006] In one of the embodiments, the core rotation driving module includes a rotation driving device and a rotation transmission device. One end of the rotation transmission device is in transmission connection with the rotation driving device, and the other end of the rotation transmission device is in transmission connection with the core body. During thread cutting and thread withdrawing, the rotation driving device drives the core body to rotate on the core fixing seat through the rotation transmission device.

[0007] In one embodiment, the rotary drive device includes a servo motor and a planetary reducer. One end of the planetary reducer is fixed to the mold body through a connecting plate and is in transmission connection with the rotary transmission device, and the servo motor is in transmission connection with the other end of the planetary reducer through a rotating shaft; when unthreading, the rotating shaft of the servo motor drives the rotary transmission device to work through the planetary reducer.

[0008] In one embodiment, the rotary transmission device includes a transmission chain, a transmission shaft and a transmission gear. The transmission shaft and the transmission gear are both arranged inside the mold body. The transmission gear is sleeved on one end of the transmission shaft, and saw teeth meshing with the transmission gear are arranged on the outer surface of the core body. The transmission chain is coated on the outer surfaces of the planetary reducer and the other end of the transmission shaft; when unthreading, the planetary reducer drives the transmission shaft and the transmission gear to rotate through the transmission chain, thereby driving the core body to rotate.

[0009] In one embodiment, the core assembly, the transmission shaft and the transmission gear are all rotatably arranged inside the rear template, and the thread is exposed on the surface of the rear template and is located on the side close to the front template.

[0010] In one embodiment, a glue injection cavity is formed between one end of the front template and the thread.

[0011] In one embodiment, a glue inlet is arranged at the other end of the front template, and the glue inlet is communicated with the glue injection cavity through a glue inlet pipeline.

[0012] In one embodiment, a rear mold insert is arranged at one end of the rear template, and the rear mold insert is inserted into the inside of the core fixing seat.

[0013] In one embodiment, a rear mold insert water pipe is arranged at the other end of the rear template, and the rear mold insert water pipe is inserted into the inside of the rear mold insert.

[0014] The beneficial effects of the present utility model are as follows: The design of this application is reasonable and the structure is novel. By adopting the structural design of the spring pin, when the lens barrel is rotated to open the mold, the spring pin can assist the lens barrel to be rotated and ejected from the thread, so as to achieve the purpose of precise unthreading. By adopting the structural design of the steel ball bearing, the rotation between the core fixing seat and the core body is more smooth. By adopting the core rotation drive module to drive the core body to rotate on the core fixing seat, the function of rotating the lens barrel to be demolded from the thread of the core body is realized, with high precision and strong practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a sectional view of an embodiment of the present application;

[0016] Figure 2 It is a schematic diagram of the overall structure of the embodiment of the present application;

[0017] Figure 3 It is a schematic diagram of the structure of the core component and the core rotation drive module of the embodiment of the present application;

[0018] Figure 4 It is a partial cross-sectional schematic diagram of the embodiment of the present application. Specific embodiments

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] It should be noted that when a component is referred to as being "mounted on" another component, it can be directly mounted on the other component or there may also be an intermediate component. When a component is considered to be "disposed on" another component, it can be directly disposed on the other component or there may be an intermediate component at the same time. When a component is considered to be "fixed to" another component, it can be directly fixed to the other component or there may be an intermediate component at the same time.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The term "or / and" used herein includes any and all combinations of one or more of the related listed items.

[0022] Please refer to Figures 1 to 4A lens barrel rotary mold opening structure according to an embodiment of the present application includes a mold body 100 and a core rotation driving module 200. The mold body 100 includes a front template 11, a rear template 12 and a core assembly 13. When the mold is closed, the front template 11 and the rear template 12 are respectively covered on the front and rear ends of the core assembly 13. The core assembly 13 includes a core fixing seat 131 and a core body 132. A screw thread 133 is provided on the core body 132 and at one end close to the front template 11. The core body 132 is rotatably arranged on the core fixing seat 131. The core rotation driving module 200 is arranged on one side of the mold body 100 and is transmission-connected to the core body 132. A steel ball bearing 134 for assisting the core body 132 to rotate on the core fixing seat 131 is provided between the core fixing seat 131 and the core body 132. A spring pin 135 for assisting the screw thread 133 to perform thread twisting and thread withdrawal is provided inside the core body 132.

[0023] It should be noted that, by adopting the structural design of the screw thread 133 and the mutual cooperation of the front template 11, the rear template 12 and the core assembly 13, the function of forming an external thread on the outer surface of the lens barrel is achieved. By adopting the structural design of the spring pin 135, when the lens barrel is twisted and withdrawn on the core body 132, an auxiliary force for ejection can be applied to the lens barrel, thereby better rotationally separating the lens barrel and the screw thread 133. By adopting the structural design of the steel ball bearing 134, the rotation between the core fixing seat 131 and the core body 132 is smoother, thereby improving the rotational separation accuracy between the lens barrel and the screw thread 133.

[0024] In some optional embodiments, the core rotation drive module 200 includes a rotation drive device 21 and a rotation transmission device 22, one end of the rotation transmission device 22 is transmission connected to the rotation drive device 21, and the other end of the rotation transmission device 22 is transmission connected to the core body 132; when the thread is withdrawn, the rotation drive device 21 drives the core body 132 to rotate on the core fixing seat 131 through the rotation transmission device 22.

[0025] In some optional embodiments, the rotation drive device 21 includes a servo motor 211 and a planetary reducer 212, one end of the planetary reducer 212 is fixed to the mold body 100 through a connecting plate and is transmission-connected to the rotation transmission device 22, and the servo motor 211 is transmission-connected to the other end of the planetary reducer 212 through a rotating shaft; when the threaded teeth are withdrawn, the rotating shaft of the servo motor 211 drives the rotation transmission device 22 to work through the planetary reducer 212.

[0026] In some of the alternative embodiments, the rotary drive device 22 includes a drive chain 221, a drive shaft 222, and a drive gear 223. The drive shaft 222 and the drive gear 223 are both disposed inside the mold body 100. The drive gear 223 is sleeved on one end of the drive shaft 222. The outer surface of the core body 132 is provided with saw teeth 136 that mesh with the drive gear 223. The drive chain 221 is wrapped around the outer surfaces of the planetary reducer 212 and the other end of the drive shaft 222. When threading and unthreading, the planetary reducer 212 drives the drive shaft 222 and the drive gear 223 to rotate through the drive chain 221, thereby driving the core body 132 to rotate.

[0027] It should be noted that the servo motor 211 and the planetary reducer 212 are used as the rotary drive device 21. The servo motor 211 and the planetary reducer 212 have high precision. The drive chain 221 is used for transmission between the planetary reducer 212 and the drive shaft 222, improving the transmission precision. Finally, the drive gear 223 drives the core body 132 to rotate precisely in the core fixing seat 131.

[0028] In some of the alternative embodiments, the core assembly 13, the drive shaft 222, and the drive gear 223 are all rotatably disposed inside the rear template 12. The thread 133 is exposed on the surface of the rear template 12 and is located on the side close to the front template 11.

[0029] In some of the alternative embodiments, a glue injection cavity 137 is formed between one end of the front template 11 and the thread 133.

[0030] In some of the alternative embodiments, a glue inlet 111 is provided at the other end of the front template 11. The glue inlet 111 is connected to the glue injection cavity 137 through a glue inlet pipe 112.

[0031] It should be noted that liquid plastic is injected into the glue injection cavity 137 through the glue inlet 111 and the glue inlet pipe 112, and a lens barrel is formed through the glue injection cavity 137.

[0032] In some of the alternative embodiments, a rear mold insert 121 is provided at one end of the rear template 12. The rear mold insert 121 is inserted into the inside of the core fixing seat 131.

[0033] In some of the alternative embodiments, a rear mold insert water pipe 122 is provided at the other end of the rear template 12. The rear mold insert water pipe 122 is inserted into the inside of the rear mold insert 121.

[0034] It should be noted that the rear mold insert water pipe 122 provides a cooling system during glue injection, enabling the lens barrel to be quickly cooled and formed.

[0035] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

[0036] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A barrel rotation mold opening structure, characterized in that, It includes a mold body and a core rotation drive module. The mold body includes a front template, a rear template and a core assembly. When the mold is closed, the front template and the rear template respectively cover the front and rear ends of the core assembly. The core assembly includes a core fixing seat and a core body. One end of the core body close to the front template is provided with a thread. The core body is rotatably arranged on the core fixing seat. The core rotation drive module is arranged on one side of the mold body and is in transmission connection with the core body. A steel ball bearing for assisting the core body to rotate on the core fixing seat is arranged between the core fixing seat and the core body. A spring pin for assisting the thread to perform threading and thread withdrawing is arranged inside the core body.

2. The lens barrel rotary mold opening structure according to claim 1, wherein The core rotation drive module includes a rotation drive device and a rotation transmission device. One end of the rotation transmission device is in transmission connection with the rotation drive device, and the other end of the rotation transmission device is in transmission connection with the core body. When threading and thread withdrawing, the rotation drive device drives the core body to rotate on the core fixing seat through the rotation transmission device.

3. The lens barrel rotary mold opening structure according to claim 2, wherein The rotation drive device includes a servo motor and a planetary reducer. One end of the planetary reducer is fixed to the mold body through a connecting plate and is in transmission connection with the rotation transmission device. The servo motor is in transmission connection with the other end of the planetary reducer through a rotating shaft. When threading and thread withdrawing, the rotating shaft of the servo motor drives the rotation transmission device to work through the planetary reducer.

4. The barrel rotating mold opening structure according to claim 3, wherein The rotation transmission device includes a transmission chain, a transmission shaft and a transmission gear. The transmission shaft and the transmission gear are both arranged inside the mold body. The transmission gear is sleeved on one end of the transmission shaft. The outer surface of the core body is provided with sawteeth meshing with the transmission gear. The transmission chain covers the outer surfaces of the planetary reducer and the other end of the transmission shaft. When threading and thread withdrawing, the planetary reducer drives the transmission shaft and the transmission gear to rotate through the transmission chain, thereby driving the core body to rotate.

5. The barrel rotation mold opening structure according to claim 4, characterized in that, The core assembly, the transmission shaft and the transmission gear are all rotatably arranged inside the rear template. The thread is exposed on the surface of the rear template and is located on the side close to the front template.

6. The barrel rotation mold opening structure according to claim 5, characterized in that, A glue injection cavity is formed between one end of the front template and the thread.

7. The barrel rotation mold opening structure according to claim 6, characterized in that, The other end of the front template is provided with a glue inlet, and the glue inlet is communicated with the glue injection cavity through a glue injection pipeline.

8. The barrel rotation mold opening structure according to claim 1, characterized in that, One end of the rear template is provided with a rear mold insert, and the rear mold insert is inserted into the inside of the core fixing seat.

9. The barrel rotation mold opening structure according to claim 8, characterized in that The other end of the rear template is provided with a water pipe for the rear mold insert, and the water pipe for the rear mold insert is inserted into the inside of the rear mold insert.

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