CN210109550U

CN210109550U - High-precision camera displacement cam mechanism

Info

Publication number: CN210109550U
Application number: CN201921240864.5U
Authority: CN
Inventors: 周志明
Original assignee: Dongguan Minjiang Intelligent Technology Co Ltd
Current assignee: Dongguan Minjiang Intelligent Technology Co Ltd
Priority date: 2019-07-31
Filing date: 2019-07-31
Publication date: 2020-02-21
Anticipated expiration: 2029-07-31

Abstract

The utility model discloses a high accuracy camera displacement cam mechanism, include: a servo motor; a heart cam provided at one side of the servo motor and configured to swing in response to a torque output from the servo motor; the guide rail is fixedly arranged on the upper side of the servo motor, and the extending direction of the guide rail is vertical to the rotating shaft direction of the servo motor; the movable frame comprises a frame body, a camera and a light source which are respectively arranged on two sides of the frame body, and the whole movable frame can be connected to the upper side of the guide rail in a sliding manner; and the cam follower is fixedly connected with the movable frame at the upper part and is provided with fork bodies clamped at two sides of the heart-shaped cam at the lower part. The utility model aims at providing a can be applicable to little space, simple structure and control accurate high accuracy camera displacement cam mechanism.

Description

High-precision camera displacement cam mechanism

Technical Field

The utility model relates to an image test equipment especially relates to a high accuracy camera displacement cam mechanism.

Background

In the mechanical automation industry, a linear motion mechanism is a necessary module, common linear motion is provided with an eccentric wheel mechanism, a connecting rod mechanism and the like, and the application environment is also diversified. When an image test product is manufactured, the product generally needs to move forwards and backwards or leftwards and rightwards, so that the image taking by taking a picture separately is realized; in this case, a small and flexible cam displacement mechanism module is required.

The core of the focusing mechanism applied at present is mainly a ball screw mechanism, a composite mechanism of the ball screw and a worm gear. The ball screw mechanism is widely applied, but is difficult to be applied to occasions with installation space limitation. The composite structure of the ball screw and the worm gear requires a large installation space, the installation structure is complex, and the whole application is clumsy. Therefore, the existing structure for driving the displacement of the camera is generally complex and occupies a large space, and a connection displacement mechanism which is used in a small space, has a simple structure and is controlled accurately is lacked.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the above-mentioned technical problem at least, provide one kind and can be applicable to little space, simple structure and control accurate high accuracy camera displacement cam mechanism.

The utility model discloses a realize through following technical scheme:

a high precision camera displacement cam mechanism comprising: a servo motor; a heart cam provided at one side of the servo motor and configured to swing in response to a torque output from the servo motor; the guide rail is fixedly arranged on the upper side of the servo motor, and the extending direction of the guide rail is vertical to the rotating shaft direction of the servo motor; the movable frame comprises a frame body, a camera and a light source which are respectively arranged on two sides of the frame body, and the whole movable frame can be connected to the upper side of the guide rail in a sliding manner; and the cam follower is fixedly connected with the movable frame at the upper part and is provided with fork bodies clamped at two sides of the heart-shaped cam at the lower part.

As an improvement of the technical scheme, preferably the frame body comprises a base, two parallel baffles and two parallel connecting plates, the base is connected with a guide rail in a sliding manner, the two baffles are clamped on two sides of the camera, the baffles are provided with a first strip hole and a second strip hole, the first strip hole and the second strip hole are used for being connected with the base and connected with the camera, the two connecting plates are used for being connected with the camera and a light source, and the connecting plates are provided with third strip holes used for adjusting the distance between the camera and the light source.

As a further improvement of the invention, it is preferable that the fork body includes a cover plate, and a first cam pin and a second cam pin that are provided through the cover plate, and that swing with the heart cam and always abut against both sides of the heart cam in the same horizontal direction.

As an improvement of the technical solution, the servo motor further preferably comprises a sensor, and the sensor is arranged on one side of the servo motor, which is opposite to the heart-shaped cam.

As an improvement of the technical solution, preferably, the movable frame is further provided with a clamp for erecting the light source.

Has the advantages that: the high-precision camera displacement cam mechanism claimed by the application drives the heart-shaped cam to swing through the servo motor, and utilizes the characteristic that the heart-shaped cam can shift in the same horizontal direction at corresponding positions when swinging to different positions, so that fork bodies clamped on two sides of the heart-shaped cam can also shift along with the swinging of the heart-shaped cam, a movable frame fixedly connected with the upper side of a cam follower is driven to shift, a camera on the movable frame can also shift, and the structure is simple; through the cooperation of the heart-shaped cam and the servo motor, the camera can be controlled to continuously move and sensitively stop, and the control precision is high; simultaneously, because in the scheme of this application, servo motor's drive shaft, heart type cam and guide rail's direction are two liang of vertically, compare the prior art that the transmission direction is parallel to each other, the space is more compact, can be applicable to the continuous operation of shooing in little space.

Drawings

The following detailed description of embodiments of the invention is provided in conjunction with the accompanying drawings, in which:

FIG. 1 is a schematic assembly diagram of an embodiment of a high-precision camera displacement cam mechanism provided by the present application;

fig. 2 is an exploded view of fig. 1.

Detailed Description

This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

The application claims a high-precision camera displacement cam mechanism, as shown in fig. 1-2, comprising: a servo motor 1; a heart cam 2 provided at one side of the servo motor 1 and configured to swing in response to a torque output from the servo motor 1; the guide rail 4 is fixedly arranged on the upper side of the servo motor 1, and the extending direction of the guide rail 4 is vertical to the rotating shaft direction of the servo motor 1; the movable frame 3 comprises a frame body, a camera 32 and a light source 33 which are respectively arranged on two sides of the frame body, and the whole movable frame 3 can be connected to the upper side of the guide rail 4 in a sliding manner; and a cam follower 5 which is fixedly connected with the movable frame 3 at the upper part and is provided with fork bodies clamped at two sides of the heart-shaped cam 2 at the lower part.

According to the technical scheme, the heart-shaped cam 2 is driven to swing through the servo motor 1, the characteristic that the heart-shaped cam 2 can shift in the corresponding position in the same horizontal direction when swinging to different positions is utilized, namely the length of the heart-shaped cam 2 in the same horizontal direction in the swinging process is always equal, but the specific position of the length in the horizontal direction can shift along with the difference of the position to which the heart-shaped cam 2 rotates, so that forks clamped on two sides of the heart-shaped cam 2 can also shift along with the swinging of the heart-shaped cam 2, the movable frame 3 fixedly connected with the upper side of the cam follower 5 is driven to shift relative to the guide rail 4, the camera 32 on the movable frame 3 can also shift finally, and the structure is simple; through the cooperation of the heart-shaped cam 2 and the servo motor 1, the camera 32 can be controlled to continuously move and sensitively stop, the jamming cannot occur, and the control precision is high; simultaneously, because in the scheme of this application, servo motor 1's drive shaft, heart type cam 2 and guide rail 4's direction are two liang of vertically, and the drive shaft is also vertical with the extending direction of guide rail 4 simultaneously, very big utilization the space, compare like ball screw mechanism or the prior art that the complex construction transmission direction of ball screw mechanism is parallel to each other, avoided occupying the big degree in space, the space is more compact, can be applicable to the operation in little space, be applicable to more application.

As an improvement of the above technical solution, preferably, the frame body includes a base 311, two baffles 312 parallel to each other, and two connecting plates 313 parallel to each other, the base 311 is slidably connected to the guide rail 4, the two baffles 312 are clamped at two sides of the camera 32, the two connecting plates 313 are used for connecting the camera 32 and the light source 33, the base 311, the baffles 312, and the connecting plates 313 are considered for avoiding the direct sliding connection between the camera 32 or the light source 33 and the guide rail 4, so that the stability of the displacement of the camera 32 is improved, and the baffles 312 also play a role in protection. Preferably, the barrier 312 is provided with a first long hole 314 and a second long hole 315 for connecting with the base 311 and the camera 32, the connection plate 313 is provided with a third long hole 316 for adjusting the distance between the camera 32 and the light source 33, the first long hole 314 is used for adjusting the position of the camera 32 relative to the barrier 312, the second long hole 315 is used for adjusting the height of the camera 32 relative to the base 311, and the first long hole 314, the second long hole 315 and the third long hole 316 are all used for adjusting the camera 32 by an operator before or during the displacement of the camera 32, so that the requirements of the operator on the positions and heights of the camera 32 and the light source 33 are met. The specific adjustment can be realized only by unscrewing or unscrewing the bolts in the first elongated hole 314, the second elongated hole 315 and the third elongated hole 316, sliding the baffle 312, the camera 32 and the connecting plate 313 to the proper positions, and then screwing the bolts. In the present application, the camera 32 is preferably capable of moving a distance of 65mm or less.

The fork body in the application can be integrally formed or can be combined in a split mode, a split structure is selected in the embodiment, the fork body comprises a cover plate 51, a first cam pin 52 and a second cam pin 53 which penetrate through the cover plate 51, the first cam pin 52 and the second cam pin 53 swing along with the heart-shaped cam 2 and are always abutted to two sides of the heart-shaped cam 2 in the same horizontal direction, the cover plate 51 can be integrally formed or split, the cover plate 51 adopted in the embodiment is also split, a part of the heart-shaped cam 2 is exposed, the heart-shaped cam 2 is incompletely limited in the axial direction of the servo motor 1, the heart-shaped cam 2 is allowed to have more movable positions, the limited clamping probability in the swing process of the heart-shaped cam 2 is reduced, and meanwhile the shape processing requirement for the cover plate 51 is greatly reduced.

As an improvement of the technical solution, the camera system preferably further comprises a sensor 6, the sensor 6 is fixedly arranged on one side of the servo motor 1, which is away from the heart-shaped cam 2, a photosensitive probe is arranged on the sensor 6, a blocking piece (not shown) is fixedly arranged on the camera 32, when the blocking piece blocks the photosensitive probe, the sensor 6 sends a power-off instruction to the servo motor 1, the sensor 6 is used for monitoring whether the camera 32 returns to an initial position, when the camera system is actually used, the servo motor 1 is started, the movable frame 3 slides relative to the guide rail 4, the camera 32 continuously shoots, the heart-shaped cam 2 swings, and when the servo motor 1 returns to the initial position, the sensor 6 stops running even if the servo motor 1 stops running, the automation degree is high, and meanwhile, the camera 32 can be prevented from repeatedly shooting at the same angle of the external environment.

In addition, it is preferable that the movable frame 3 further includes a clip for mounting the light source 33, so as to prevent the light source 33 from being damaged due to shaking during the displacement process.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. A high accuracy camera displacement cam mechanism, comprising:

a servo motor;

a heart cam provided at one side of the servo motor and configured to swing in response to a torque output from the servo motor;

the guide rail is fixedly arranged on the upper side of the servo motor, and the extending direction of the guide rail is vertical to the rotating shaft direction of the servo motor;

the movable frame comprises a frame body, a camera and a light source which are respectively arranged on two sides of the frame body, and the whole movable frame can be connected to the upper side of the guide rail in a sliding manner;

and the cam follower is fixedly connected with the movable frame at the upper part and is provided with fork bodies clamped at two sides of the heart-shaped cam at the lower part.

2. A high accuracy camera displacement cam mechanism according to claim 1, wherein: the support body includes that base, two are each other baffle and two connecting plates that are parallel to each other, base and guide rail sliding connection, two the baffle clamp is established in the both sides of camera, offer on the baffle and be used for being connected with the base and be used for the rectangular hole of first rectangular hole and second that is connected with the camera, two the connecting plate is used for connecting camera and light source, be provided with the rectangular hole of third that is used for adjusting camera and light source interval on the connecting plate.

3. A high accuracy camera displacement cam mechanism according to claim 1, wherein: the fork body comprises a cover plate, a first cam pin and a second cam pin, wherein the first cam pin and the second cam pin penetrate through the cover plate, swing along with the heart-shaped cam and are always abutted against two sides of the heart-shaped cam in the same horizontal direction.

4. A high accuracy camera displacement cam mechanism according to claim 1, wherein: still include the inductor, the inductor setting is in servo motor one side of back to heart type cam.

5. A high accuracy camera displacement cam mechanism according to claim 1, wherein: the movable frame is also provided with a clamping position for erecting the light source.