CROSS-REFERENCE TO RELATED APPLICATION
This application claims the benefit of the filing date under 35 U.S.C. § 119 (a)-(d) of Chinese Patent Application No. 202310694705.7, filed on Jun. 13, 2023.
FIELD OF THE INVENTION
The present invention relates to a detection device and an object conveying system comprising the detection device.
BACKGROUND OF THE INVENTION
Generally, before processing objects, they must be transported to a processing station. Therefore, it is necessary to set up detection equipment at the processing station to detect the presence of the objects to be processed. Visual inspection devices are usually used to detect the presence of the objects to be processed at the processing station. However, visual inspection devices have high costs and low detection efficiency due to the need for a large amount of image data processing.
SUMMARY OF THE INVENTION
A detection device includes an installation plate, a lever member rotatably installed on the installation plate and rotatable between a first position and a second position, and a sensor installed on the installation plate and detecting whether the lever member is in the second position. The lever member is rotated from the first position to the second position under a pushing of an object when the object is supplied to a predetermined workstation. The lever member can be automatically reset to the first position under gravity when no object is supplied to the predetermined workstation. It is determined that the object is supplied to the predetermined workstation if the sensor detects that the lever member is in the second position and, if the sensor does not detect that the lever member is in the second position, it is determined that no object is supplied to the predetermined workstation.
BRIEF DESCRIPTION OF THE DRAWINGS
Features and advantages of embodiments of the present disclosure will be apparent from the following description made in conjunction with the accompanying drawings, in which:
FIG. 1 shows an illustrative perspective view of a detection device according to an exemplary embodiment of the present invention when viewed from one direction;
FIG. 2 shows an illustrative perspective view of a detection device according to an exemplary embodiment of the present invention when viewed from another direction;
FIG. 3 shows an illustrative exploded view of a detection device according to an exemplary embodiment of the present invention;
FIG. 4 shows an illustrative plan view of a detection device according to an exemplary embodiment of the present invention, in which the object has already been supplied to a predetermined workstation; and
FIG. 5 shows an illustrative plan view of a detection device according to an exemplary embodiment of the present invention, in which no object is supplied to the predetermined workstation.
DETAILED DESCRIPTION
Exemplary embodiments of the present disclosure will be described hereinafter in detail with reference to the attached drawings, wherein like reference numerals refer to like elements. The present disclosure may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein; rather, these embodiments are provided so that the present disclosure will convey the concept of the disclosure to those skilled in the art.
In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the disclosed embodiments. It will be apparent, however, that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and devices are schematically shown in order to simplify the drawing.
As shown in FIGS. 1 to 5, in an exemplary embodiment of the present invention, a detection device is disclosed. The detection device is used for detecting whether an object 7 is supplied to a predetermined workstation. The detection device includes: an installation plate 1, a lever member 2, and a sensor 3. The lever member 2 is rotatably installed on the installation plate 1 and adapted to rotate between a first position (as shown in FIG. 5) and a second position (as shown in FIG. 4). The sensor 3 is installed on installation plate 1 to detect whether the lever member 2 is in the second position.
As shown in FIGS. 4 to 5, in the illustrated embodiments, when the object 7 is supplied to the predetermined workstation, the lever member 2 is rotated from the first position to the second position under the pushing of the object 7. When no object 7 is supplied to the predetermined workstation, the lever member 2 can be automatically reset to the first position under the action of gravity. If the sensor 3 detects that the lever member 2 is in the second position, it is judged that the object 7 has been supplied to the predetermined workstation; otherwise, it is judged that no object 7 has been supplied to the predetermined workstation.
In the illustrated embodiment, when no object 7 is supplied to the predetermined workstation, the lever member 2 can be automatically reset to the first position under its own gravity.
As shown in FIGS. 1, 2, 4, and 5, in the illustrated embodiments, the detection device further comprises a roller 4, which is rotatably installed on the lever member 2. When the object 7 is supplied to the predetermined workstation, the object 7 contacts the roller 4 and pushes the lever member 2 from the first position to the second position through the roller 4. When no object 7 is supplied to the predetermined workstation, the lever member 2 can be automatically reset to the first position under the gravity of roller 4.
As shown in FIGS. 1 to 5, in the illustrated embodiments, the lever member 2 is L-shaped, including a first force arm 21 and a second force arm 22 perpendicularly connected to the first force arm 21. The roots of the first force arm 21 and the second force arm 22 are connected to each other and rotatably connected to the installation plate 1, allowing the lever member 2 to rotate between the first position and the second position.
In the illustrated embodiments, the roller 4 is rotatably connected to the end of the second force arm 22 of the lever member 2, allowing the roller 4 to freely rotate around its central axis when in contact with the object 7 to reduce friction between the two.
As shown in FIGS. 1, 2, and 4, in the illustrated embodiments, an installation shaft 41 is provided at the end of the second force arm 22, and an installation hole is formed in the roller 4 that matches the installation shaft 41, allowing the roller 4 to rotate freely around the installation shaft 41.
As shown in FIGS. 1, 2, 4, and 5, in the illustrated embodiments, a connection shaft 23 is provided on the installation plate 1, and a connection hole is formed in the roots of the first force arm 21 and the second force arm 22. The connection shaft 23 is rotatably fit with the connection hole, so that the lever member 2 can rotate around the connection shaft 23 between the first position and the second position.
In an embodiment, the detection device further includes a judgment device 8 shown in FIG. 4 (can be a software hardware combined functional module, such as a controller), which is connected to the sensor 3 in communication for determining whether the object 7 is supplied to a predetermined workstation based on the detection result of the sensor 3. If the sensor 3 detects that the lever member 2 is in the second position, the judgment device 8 determines that the object 7 has been supplied to the predetermined workstation, otherwise it determines that no object 7 has been supplied to the predetermined workstation.
As shown in FIGS. 3 to 5, in the illustrated embodiment, a slot 211 is formed in the end portion 210 of the first force arm 21, and the sensor 3 is a laser sensor. When the lever member 2 is in the second position, the laser beam L emitted by sensor 3 is aligned with the slot 211, and the slot 211 is detected by the sensor 3. If the sensor 3 detects the slot 211, it is determined that the object 7 has been supplied to the predetermined workstation; otherwise, it is determined that no object 7 has been supplied to the predetermined workstation.
The sensor 3 of the present invention, however, is not limited to the laser sensor shown in the diagram, but can also a switch sensor, such as a trigger switch. When the lever member 2 is in the second position, the trigger switch is pressed and triggered by the lever member 2, which can also detect the position of the lever member 2.
As shown in FIG. 4, when the lever member 2 is in the second position, the laser beam L emitted by the sensor 3 can be reflected back to the sensor 3 by the bottom surface of slot 211, and the slot 211 is detected by the sensor 3. As shown in FIG. 5, when the lever member 2 is not in the second position, the laser beam L emitted by sensor 3 is not aligned with slot 211, so that the laser beam L cannot be reflected back to the sensor 3 by the bottom surface of slot 211, and therefore slot 211 cannot be detected. When the sensor 3 does not detect the slot 211, it is determined that lever member 2 is not in the second position. When the lever member 2 is in the second position shown in FIG. 4, the first lever arm 21 and the slot 211 extend along a vertical direction, and the second lever arm 22 extends along a horizontal direction.
As shown in FIGS. 1 to 3, in the illustrated embodiments, a receiving slot 31 is formed in the housing 30 of the sensor 3, and the end portion 210 of the first force arm 21 is accommodated in the receiving slot 31 to prevent the laser beam L emitted by the sensor 3 from being interfered by external light. A connecting car 32 is formed on the housing 30 of the sensor 3, which is fixed to the installation plate 1 to secure the sensor 3 to the installation plate 1.
In an embodiment, the sensor 3 may be a fiber optic distance sensor. When the distance detected by the sensor 3 is equal to the distance between the sensor 3 and the bottom surface of slot 211, it is determined that lever member 2 is in the second position. If the sensor 3 detects the slot 211, the aforementioned judgment device can determine that the object 7 is supplied to the predetermined workstation, otherwise it is determined that no object 7 is supplied to the predetermined workstation.
As shown in FIGS. 1 and 2, in the illustrated embodiments, the detection device further comprises a limiting member 6, which is installed on the installation plate 1. When the lever member 2 is reset to the first position, the limit member 6 is pressed against the first lever arm 21 of the lever member 2 to limit the lever member 2 at the first position.
As shown in FIGS. 4 and 5, in the illustrated embodiments, the detection device further comprises an elastic element 53, such as a spring or elastic rope. The elastic element 53 is connected between the first force arm 21 of the lever member 2 and the installation plate 1. The clastic element 53 is used to apply an auxiliary resetting force to the lever member 2, so that the lever member 2 can be reset to the first position under the action of the auxiliary resetting force. In this way, the lever member 2 can be reliably reset to the first position.
As shown in FIGS. 1, 2, 4, and 5, in the illustrated embodiments, a first connecting post 51 is provided on the first force arm 21 of the lever member 2, a second connecting post 52 is provided on the installation plate 1, and the elastic element 53 is connected between the first connecting post 51 and the second connecting post 52.
In the aforementioned exemplary embodiments of the present invention, the detection device can directly determine whether the object is supplied to the predetermined workstation based on the position of the lever member. Therefore, the present invention does not require the use of expensive visual devices, reduces detection costs, and can also improve detection efficiency.
In another exemplary embodiment of the present invention, an object conveying system is also disclosed. The object conveying system includes: an object conveying device 8 and the aforementioned detection device. The object conveying device 8 is used to transport the object 7 to a predetermined workstation. The detection device is installed at the predetermined workstation to detect whether the object 7 has been transported to the predetermined workstation.
It should be appreciated for those skilled in this art that the above embodiments are intended to be illustrative, and not restrictive. For example, many modifications may be made to the above embodiments by those skilled in this art, and various features described in different embodiments may be freely combined with each other without conflicting in configuration or principle.
Although several exemplary embodiments have been shown and described, it would be appreciated by those skilled in the art that various changes or modifications may be made in these embodiments without departing from the principles and spirit of the disclosure, the scope of which is defined in the claims and their equivalents.
As used herein, an element recited in the singular and preceded with the word “a” or “an” should be understood as not excluding plural of said elements or steps, unless such exclusion is explicitly stated. Furthermore, references to “one embodiment” of the present invention are not intended to be interpreted as excluding the existence of additional embodiments that also incorporate the recited features. Moreover, unless explicitly stated to the contrary, embodiments “comprising” or “having” an element or a plurality of elements having a particular property may include additional such elements not having that property.
Patent Application
20240417184
