An automatic running-in device for zoom lens

Abstract

The application discloses a zoom lens automatic running-in device, which comprises a base provided with a through hole with an inner diameter matched with the outer diameter of a lens to be run-in, and a step on the lens to be run-in is in abutment with one side of the through hole to limit the position, and a foot pad is installed at the bottom of the base to raise the height of the base; the number of fixed clamps is at least two, the fixed clamps are arranged in a circumferential array around the through hole, and the fixed clamps are used for fixing and clamping the lens to be run-in; a driving assembly comprises a supporting column and a driving motor, one end of the supporting column is fixed on the base, the driving motor is installed at the other end of the supporting column, a driving gear is installed on the output shaft of the driving motor, and the driving gear is in mesh with a gear ring of the lens to be run-in; and a controller is electrically connected with the driving motor. The driving motor is directly meshed with the gear ring in the zoom lens to drive the zoom lens, the running-in work can be carried out before the zoom lens is installed with a shell, and whether the zoom lens has zoom jamming can be detected and timely maintenance can be carried out.

Description

Technical Field

[0001] This invention relates to an automatic break-in device for zoom lenses in the field of optical lens manufacturing technology. Background Technology

[0002] A zoom lens is a camera lens that can change its focal length within a certain range to obtain different field of view, image sizes, and the extent of the scene. Because of its variable focal length, it can meet various photographic needs, making it widely used and popular with consumers. The zoom function of a zoom lens mainly relies on a spiral groove on an internal cylinder to drive the lens element axially.

[0003] Since the drum is the core component for zooming in a zoom lens, its rotation needs to be tested after the zoom lens is manufactured. This checks whether the resistance during zooming is excessive, whether there is any jamming, and whether the axial movement distance of the lens meets the design requirements. Furthermore, because both the rotation of the drum and the translation of the lens are movable connections, zoom lenses undergo a break-in process before leaving the factory to improve the user experience. This involves repeatedly rotating the drum, causing the lens to zoom repeatedly, to reduce any jerking sensation during zooming.

[0004] However, the current break-in process for zoom lenses is mainly done manually by workers after the zoom lens is fully assembled. This involves manually rotating a roller to achieve repeated zooming. On the one hand, this method is inefficient and cannot meet the production efficiency requirements of large-scale zoom lenses. On the other hand, since the zoom lens is already fully assembled at this point, if structural problems are found, the outer casing needs to be removed for inspection, which is time-consuming and labor-intensive. Summary of the Invention

[0005] The purpose of this invention is to at least solve one of the technical problems existing in the prior art, and to provide an automatic break-in device for zoom lenses that can automatically break in zoom lenses in a semi-finished state, advance the break-in process, and improve break-in efficiency.

[0006] According to an embodiment of the present invention, an automatic break-in device for zoom lenses is provided, comprising:

[0007] The base has a through hole with an inner diameter that matches the outer diameter of the lens to be broken in. The step on the lens to be broken in abuts against one side of the through hole to achieve a limiting position. The bottom of the base is equipped with a foot pad to raise the height of the base.

[0008] At least two fixing clips are arranged in a circumferential array around the through hole and are used to fix and hold the lens to be broken in.

[0009] A driving assembly comprises a support column and a driving motor, one end of the support column is fixed on the base, the driving motor is installed on the other end of the support column, a driving gear is installed on the output shaft of the driving motor, and the driving gear is in mesh with the gear ring of the lens to be run-in.

[0010] A controller is electrically connected with the driving motor.

[0011] According to the embodiment of the present application, further, the through hole is provided with a limiting step matched with the step on the lens to be run-in.

[0012] According to the embodiment of the present application, further, the fixing clamp is specifically an elbow clamp.

[0013] According to the embodiment of the present application, further, the number of the fixing clamps is three, and the three fixing clamps are distributed around the circumferential array of the through hole.

[0014] According to the embodiment of the present application, further, the number of the driving assemblies is two, and the two driving motors are respectively matched with the two gear rings on the lens to be run-in.

[0015] According to the embodiment of the present application, further, the base is provided with a positioning groove matched with the support column, and the support column is inserted into the positioning groove to realize positioning.

[0016] According to the embodiment of the present application, further, the support column is fixed in the positioning groove through a bolt.

[0017] According to the embodiment of the present application, further, the driving assembly further comprises a motor fixing plate and a fixing bolt, the driving motor is connected with the motor fixing plate, the motor fixing plate is provided with a sliding groove, the opening direction of the sliding groove passes through the central axis of the lens to be run-in, the support column is provided with a threaded hole matched with the fixing bolt, the fixing bolt passes through the sliding groove and is screw-connected with the threaded hole, so that the motor fixing plate can adjust the position to change the center distance between the driving gear and the gear ring.

[0018] According to the embodiment of the present application, further, the number of the foot pads is four, and the four foot pads are distributed in an array at the bottom of the base.

[0019] According to the embodiment of the present application, further, the foot pads are fixed at the bottom of the base through bolts.

[0020] The beneficial effects of the embodiment of the present application at least include that the present application directly meshes the driving motor with the gear ring in the zoom lens to drive the zoom lens, can perform run-in work before the zoom lens is installed with a shell, and can detect whether the zoom lens has zoom jam and timely perform maintenance. BRIEF DESCRIPTION OF DRAWINGS

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly explained below. Obviously, the described drawings are only a part of the embodiments of the present invention, and not all of them. Those skilled in the art can obtain other design schemes and drawings based on these drawings without creative effort.

[0022] Fig. 1 This is a three-dimensional diagram of the automatic break-in device for zoom lenses according to an embodiment of the present invention;

[0023] Fig. 2 This is an exploded view of the automatic break-in device for zoom lenses according to an embodiment of the present invention.

[0024] Reference numerals: 100-base, 110-through hole, 111-limiting step, 120-positioning groove, 200-foot pad, 300-fixing clamp, 400-drive assembly, 410-support column, 411-threaded hole, 420-drive motor, 421-drive gear, 430-motor fixing plate, 431-slide groove, 500-lens to be broken in, 510-step, 520-gear ring. Detailed Implementation

[0025] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0026] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0027] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0028] In the description of the present application, the words such as arrangement, installation, connection and the like should be understood broadly unless otherwise explicitly limited, and the person skilled in the art can determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0029] The embodiment of the present application provides a zoom lens automatic running-in device, a gear ring 520 in a lens to be run-in 500 is directly driven by a driving motor 420 to realize zooming, without the need for workers to repeatedly manually zoom, thereby reducing the labor burden of workers, improving running-in efficiency, and reducing the influence on the production process of the zoom lens. Moreover, by advancing the running-in process before the complete assembly of the zoom lens, it can be determined whether the zoom lens has a zooming jam phenomenon in time, so that maintenance or maintenance can be performed in time, thereby saving maintenance time.

[0030] Referring to Figs. 1-2 The zoom lens automatic running-in device in the embodiment of the present application comprises a base 100, a fixed clamp 300, a driving assembly 400 and a controller. The base 100 is the main structure of the present zoom lens automatic running-in device, and is used to bear other components and the lens to be run-in 500. The middle part of the base 100 is provided with a through hole 110 matched with the outer diameter of the lens to be run-in 500, and the lens to be run-in 500 is provided with a step 510 which can abut against one side of the through hole 110 to realize limiting. Thus, when the lens to be run-in 500 is placed on the base 100, the through hole 110 gives way to the lens to be run-in 500 to prevent the lens at the end thereof from being bumped, and the lens to be run-in 500 is suspended on the base 100 with the step 510 as the fulcrum. In order to prevent the end of the lens to be run-in 500 from being bumped against the desktop, the bottom of the base 100 is also provided with a foot pad 200 to increase the height of the base 100. Specifically, the foot pad 200 is a plastic foot pad, and the bottom thereof is provided with an antiskid rubber layer to increase the friction with the desktop. The number of the foot pads 200 is four, which are arranged in a matrix on the bottom of the base 100, and are fixedly connected with the base 100 through bolts.

[0031] The number of the fixed clamps 300 is at least two, and in the embodiment, the number is three, which are distributed around the circumferential array of the through holes 110, and are used to apply external force to the lens 500 to be ground to achieve clamping of the lens 500 to be ground, and reduce the situation that uneven force during clamping causes the lens 500 to be ground to deviate. Specifically, the fixed clamp 300 is an elbow clamp, which specifically lifts the clamping force through a lever mechanism when the handle is pressed, and achieves clamping of the lens 500 to be ground. The elbow clamp is a prior art, and its specific structure is not described here. In some embodiments, the force direction of the elbow clamp is towards the side of the lens 500 to be ground and points to the central axis of the lens 500 to be ground, and the resultant force of each elbow clamp is zero, thereby fixing the lens 500 to be ground. In the embodiment, the force direction of the elbow clamp is vertical and acts on the step 510 of the lens 500 to be ground, and clamps the step 510 together with the side of the through hole 110, thereby fixing the lens 500 to be ground. It is easy to understand that other clamping methods that can achieve the same technical effect can also be used for clamping, which are not described here.

[0032] The driving assembly 400 is used to drive the lens 500 to be ground to zoom to perform grinding. The driving assembly 400 includes a support column 410 and a driving motor 420, one end of the support column 410 is fixed on the base 100, and the driving motor 420 is installed on the other end of the support column 410. A driving gear 421 is installed on the output shaft of the driving motor 420, which can be engaged with the gear ring 520 in the lens 500 to be ground, so that when the driving motor 420 is started, it can drive the gear ring 520 to rotate, thereby driving the lens 500 to be ground to zoom. In order to enable the driving motor 420 to accurately engage with the gear ring 520, the length of the support column 410 needs to be designed based on the height of the gear ring 520 in the lens 500 to be ground. By changing the length of the support column 410, different types of lenses 500 to be ground can be adapted.

[0033] The controller is an electric control device, which is electrically connected with the driving motor 420, and is used to control the driving motor 420 to reverse to drive the lens 500 to be ground to repeatedly zoom.

[0034] Further, the through hole 110 is provided with a limiting step 111 matched with the step 510 on the lens 500 to be ground, and the two steps are matched with each other to improve the limiting effect on the lens 500 to be ground.

[0035] Further, for the lens 500 to be ground with a long zoom distance, it is provided with two gear rings 520 for double-stage zooming, and the number of the driving assemblies 400 is also adaptively adjusted to two, and the two driving motors 420 are respectively engaged with the two gear rings 520 to achieve zoom grinding work. The two driving motors 420 are electrically connected with the controller and are controlled by the controller.

[0036] Further, the base 100 is provided with a positioning groove 120 matched with the support column 410, and the support column 410 can be positioned in the horizontal direction after being inserted into the positioning groove 120, thereby improving the installation stability of the support column 410. Specifically, the positioning groove 120 is provided with a mounting hole, and a bolt can be screwed with the support column 410 through the mounting hole, thereby fixing the support column 410.

[0037] Further, the driving assembly 400 further comprises a motor fixing plate 430 and a fixing bolt, the driving motor 420 is connected with the motor fixing plate 430, the motor fixing plate 430 is provided with a sliding groove 431, and the sliding groove 431 is arranged to pass through the central axis of the lens to be ground 500. The support column 410 is provided with a threaded hole 411 matched with the fixing bolt, and the fixing bolt is screwed with the threaded hole 411 after passing through the sliding groove 431, thereby fixing the motor fixing plate 430 on the support column 410. By designing the sliding groove 431, the position of the motor fixing plate 430 can be finely adjusted before the motor fixing plate 430 is fixed, thereby changing the center distance between the driving gear 421 on the driving motor 420 and the gear ring 520, so that the meshing of the two is more smooth, and the gap caused by the machining error is eliminated.

[0038] Next, the use method of the automatic grinding device of the zoom lens is introduced:

[0039] S100. The lens to be ground 500 is arranged in the through hole 110;

[0040] S200. The lens to be ground 500 is fixed with the base 100 through the fixing clamp 300;

[0041] S300. The position of the motor fixing plate 430 is adjusted, so that the driving gear 421 on the driving motor 420 and the gear ring 520 on the lens to be ground 500 are meshed with each other;

[0042] S400. The position of the motor fixing plate 430 is fixed by tightening the fixing bolt;

[0043] S500. The driving motor 420 is started by the controller, and the lens to be ground 500 is repeatedly zoomed to grind;

[0044] S600. After grinding, the fixing clamp 300 is loosened, and the lens to be ground 500 is taken out.

[0045] The above is a specific description of the preferred embodiment of the application, but the application is not limited to the above-mentioned embodiments, and those skilled in the art can make various equivalent modifications or replacements without departing from the spirit of the application. These equivalent modifications or replacements are all included in the scope defined by the claims of the present application.

Claims

1. An automatic break-in device for zoom lenses, characterized in that, include: The base (100) has a through hole (110) with an inner diameter that matches the outer diameter of the lens (500) to be broken in. The step (510) on the lens (500) abuts against one side of the through hole (110) to achieve a limiting position. The bottom of the base (100) is equipped with a foot pad (200) to raise the height of the base (100). At least two fixing clips (300) are arranged in a circumferential array around the through hole (110) for fixing and holding the lens (500) to be ground. The drive assembly (400) includes a support column (410) and a drive motor (420). One end of the support column (410) is fixed to the base (100), and the drive motor (420) is mounted on the other end of the support column (410). A drive gear (421) is mounted on the output shaft of the drive motor (420), and the drive gear (421) meshes with the gear ring (520) of the lens (500) to be broken in. A controller, which is electrically connected to the drive motor (420); The break-in lens (500) is suspended on the base (100) with the step (510) as the point of force, and the through hole (110) makes way for the lens (500) to be broken in.

2. The automatic break-in device for zoom lenses according to claim 1, characterized in that: The through hole (110) is provided with a limiting step that is adapted to the step (510) on the lens to be broken in (500).

3. The automatic break-in device for zoom lenses according to claim 1, characterized in that: The fixing clip (300) is specifically an elbow clip.

4. The automatic break-in device for zoom lenses according to claim 1, characterized in that: The number of the fixing clips (300) is three, and the three fixing clips (300) are arranged in a circumferential array around the through hole (110).

5. The automatic break-in device for zoom lenses according to claim 1, characterized in that: The number of drive components (400) is two, and the two drive motors (420) respectively mesh with the two gear rings (520) on the lens (500) to be broken in.

6. The automatic break-in device for zoom lenses according to claim 1, characterized in that: The base (100) is provided with a positioning groove (120) that is adapted to the support column (410), and the support column (410) is inserted into the positioning groove (120) to achieve positioning.

7. The automatic break-in device for zoom lenses according to claim 6, characterized in that: The support column (410) is fixed in the positioning groove (120) by bolts.

8. The automatic break-in device for zoom lenses according to claim 1, characterized in that: The drive assembly (400) also includes a motor mounting plate (430) and a fixing bolt. The drive motor (420) is connected to the motor mounting plate (430). The motor mounting plate (430) is provided with a sliding groove (431). The opening direction of the sliding groove (431) passes through the central axis of the lens to be broken in (500). The support column (410) is provided with a threaded hole (411) that matches the fixing bolt. The fixing bolt passes through the sliding groove (431) and is threadedly connected to the threaded hole (411). Thus, the position of the motor mounting plate (430) can be adjusted to change the center distance between the drive gear (421) and the gear ring (520).

9. The automatic break-in device for zoom lenses according to claim 1, characterized in that: The number of foot pads (200) is four, and the four foot pads (200) are arranged in an array at the bottom of the base (100).

10. The automatic break-in device for zoom lenses according to claim 9, characterized in that: The foot pad (200) is fixed to the bottom of the base (100) by bolts.

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