An anti-interference detection system and a loading and unloading device

Abstract

The present invention belongs to the technical field of material handling. On the one hand, an anti-interference detection system is disclosed. The system is arranged at the alignment station. An external extraction mechanism can extract the tray located at the alignment station. At least one positioning member for aligning the tray is arranged at the alignment station. The anti-interference detection system includes a first detection component that can be triggered when the positioning member extends into the annular area and a second detection component that can be triggered when the extraction mechanism moves to the first height position. The annular area is located outside the edge of the tray. The annular area is selected to be suitable for the positioning member to align the tray. The distance between the first height position and the tray is greater than the distance between the extraction position and the tray. The extraction position is selected to be suitable for the extraction mechanism to extract the tray. On the other hand, a loading and unloading device including the above anti-interference detection system is also provided. The present invention avoids damage to the extraction mechanism and the positioning member due to interference, ensures production efficiency, and reduces the maintenance cost of the equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of material handling, and particularly to an anti-interference detection system and a loading and unloading device. Background Art

[0002] During the production and transportation of a display screen, a tray is conveyed through a conveyor line, and a workpiece to be processed is carried by the tray. During the handling of the tray, the position and attitude of the tray may change, causing the position of the workpiece to be processed in the tray to change accordingly, thereby affecting the position accuracy of the workpiece to be processed.

[0003] To solve the above problems, a rectifying station for rectifying the tray is usually provided on the loading and unloading device in the prior art. Positioning members for rectifying the tray are usually provided on the outer periphery of the tray, and the positioning members rectify the tray by pushing against the side surface of the tray. However, during the rectifying operation, the extraction mechanism may interfere with the positioning members, thereby damaging the extraction mechanism, reducing not only the production efficiency but also increasing the equipment maintenance cost.

[0004] Therefore, it is urgent to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide an anti-interference detection system and a loading and unloading device, which can effectively avoid the interference between the extraction mechanism and the positioning members for rectifying the tray, thereby improving the production efficiency and reducing the equipment maintenance cost.

[0006] To achieve this purpose, on the one hand, the present invention provides an anti-interference detection system, which is arranged at a rectifying station for rectifying the tray. An external extraction mechanism can extract the tray located at the rectifying station. At least one positioning member for rectifying the tray is arranged at the rectifying station. The anti-interference detection system includes:

[0007] A first detection component, which can be triggered when the positioning member extends into an annular area located outside the edge of the tray, and the annular area is selected to be suitable for the positioning member to rectify the tray; and

[0008] A second detection component, which can be triggered when the extraction mechanism moves to a first height position, and the distance between the first height position and the tray is greater than the distance between the extraction position and the tray, and the extraction position is selected to be suitable for the extraction mechanism to extract the tray.

[0009] Preferably, the anti-interference detection system further includes a third detection component, which can be triggered when the extraction mechanism moves to a second height position, and the distance between the second height position and the tray is greater than the distance between the first height position and the tray.

[0010] Preferably, the anti-interference detection system further includes a fourth detection component configured to detect whether the tray is set at the alignment station, and the fourth detection component is electrically connected to the first detection component and the second detection component.

[0011] Preferably, the first detection component includes at least one detection unit, and at least one of the detection units corresponds to at least one of the positioning members one by one. The detection unit includes a transmissive photoelectric sensor.

[0012] Preferably, the second detection component includes a transmissive photoelectric sensor, and the transmissive photoelectric sensor can detect whether the extraction mechanism enters the extraction position.

[0013] Preferably, the anti-interference detection system further includes a bracket for fixing the transmissive photoelectric sensor, and an adjustment part for adjusting the position of the transmissive photoelectric sensor is arranged on the bracket.

[0014] Preferably, the adjustment part includes a positioning hole and a guiding groove. The guiding groove is arc-shaped and extends circumferentially around the positioning hole, and the transmissive photoelectric sensor can swing along the guiding groove.

[0015] Preferably, the first detection component includes a detection camera configured to collect images of the annular area.

[0016] On the other hand, the present invention provides a loading and unloading device. The loading and unloading device is provided with an alignment station for aligning the tray. The loading and unloading device includes an extraction mechanism capable of extracting the tray located at the alignment station, and the loading and unloading device further includes the anti-interference detection system as above.

[0017] Preferably, the loading and unloading device further includes an emergency stop device. The anti-interference detection system is electrically connected to the emergency stop device, and the emergency stop device can emergently stop the extraction mechanism.

[0018] The beneficial effects of the present invention: By providing the first detection component and the second detection component, the first detection component and the second detection component can respectively detect whether the positioning member is located in the annular area of the positioning tray and whether the extraction mechanism is ready to enter the extraction position of the extraction tray, so as to effectively monitor the states of at least one positioning member and the extraction mechanism when they are located at the alignment station, and further effectively avoid interference between the extraction mechanism and the positioning member, avoid damage to the extraction mechanism or the positioning member due to interference, ensure production efficiency, and reduce the equipment maintenance cost. Description of the Drawings

[0019] Figure 1It is a schematic structural diagram of the loading and unloading device provided by an embodiment of the present invention;

[0020] Figure 2 is Figure 1 a partial view at R in

[0021] Figure 3 It is a schematic structural diagram of the anti-interference detection system provided by an embodiment of the present invention;

[0022] Figure 4 is Figure 3 a partial view at S in

[0023] In the figure:

[0024] 1. Frame;

[0025] 2. Alignment station;

[0026] 3. Extraction mechanism;

[0027] 41. First positioning member; 42. Second positioning member; 43. Third positioning member; 44. Fourth positioning member;

[0028] 511. First detection unit; 512. Second detection unit; 513. Third detection unit; 52. Second detection component; 521. First bracket; 5211. First positioning hole; 5212. First guide groove; 522. First opposed photoelectric sensor; 53. Third detection component; 531. Second bracket; 5311. Second positioning hole; 5312. Second guide groove; 532. Second opposed photoelectric sensor; 54. Fourth detection component. Detailed implementation manners

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. Additionally, it should be noted that for the sake of convenience of description, only parts related to the present invention are shown in the drawings, rather than all the structures.

[0030] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In the present invention, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath" and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicating that the horizontal height of the first feature is less than that of the second feature.

[0032] In the description of this embodiment, the orientation or positional relationships such as "up", "down", "right", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying 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 a limitation to the present invention. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0033] This embodiment provides a loading and unloading device, as Figure 1 shown. The loading and unloading device is provided with a rectifying station 2 for rectifying the tray. The loading and unloading device includes a frame 1, an extraction mechanism 3 arranged on the frame 1, and a rectifying station 2 arranged on the loading and unloading device. The extraction mechanism 3 can extract the tray located on the rectifying station 2. At least one positioning member for rectifying the tray is arranged on the rectifying station 2. Since during the process of the loading and unloading device transporting the tray, there may be a situation where the extraction mechanism 3 interferes with the positioning member located on the rectifying station 2, which may damage the extraction mechanism 3, not only reducing the production efficiency but also increasing the equipment maintenance cost. To solve the above problems, the loading and unloading device in this embodiment further includes an anti-interference detection system.

[0034] As Figures 1 to 4As shown in the figure, the anti-interference detection system is arranged on the alignment station 2 for aligning the tray. The anti-interference detection system includes a first detection component and a second detection component 52. The first detection component can be triggered when the positioning member extends into the annular area. The annular area is located outside the edge of the tray, and the annular area is selected to be suitable for the positioning member to align the tray. The second detection component 52 can be triggered when the extraction mechanism 3 moves to the first height position. The distance between the first height position and the tray is greater than the distance between the extraction position and the tray. The extraction position is selected to be suitable for the extraction mechanism 3 to extract the tray. By setting the first detection component and the second detection component 52, the first detection component and the second detection component 52 can respectively detect whether the positioning member is in the annular area of the positioning tray and whether the extraction mechanism 3 is ready to enter the extraction position for extracting the tray, so as to effectively monitor the states of at least one positioning member and the extraction mechanism 3 when they are at the alignment station 2, and further effectively avoid interference between the extraction mechanism 3 and the positioning member, prevent the extraction mechanism 3 or the positioning member from being damaged due to interference, ensure production efficiency, and reduce the equipment maintenance cost.

[0035] Specifically, in this embodiment, the loading and unloading device includes a lifting unit. The alignment station 2 is arranged on the moving path of the lifting unit. The alignment station 2 is provided with a first positioning member 41, a second positioning member 42, a pair of third positioning members 43, and a fourth positioning member 44. The first positioning member 41 and the pair of third positioning members 43 are arranged at intervals relative to each other. The second positioning member 42 and the fourth positioning member 44 are arranged at intervals relative to each other. The first positioning member 41 and the pair of third positioning members 43 are used to position the tray in its width direction. The second positioning member 42 and the fourth positioning member 44 are used to position the tray in its length direction. The first positioning member 41, the second positioning member 42, the pair of third positioning members 43, and the fourth positioning member 44 together align the tray lifted to the alignment station 2 by the lifting unit. One of the pair of third positioning members 43 is the positioning reference for the tray. The first positioning member 41 pushes against the tray and abuts the tray against the pair of third positioning members 43. The extraction mechanism 3 enters the alignment station 2 from above the first positioning member 41 externally, or moves out of the alignment station 2 across the first positioning member 41 from above the alignment station 2. The annular area includes a first interval position suitable for the fourth positioning member 44 to push against the tray, a second interval position suitable for the first positioning member 41 to push against the tray, and a third interval position suitable for the second positioning member 42 to push against the tray. Correspondingly, the first detection component includes a first detection unit 511, a second detection unit 512, and a third detection unit 513. The first detection unit 511 can detect whether the fourth positioning member 44 is in the first interval position. The second detection unit 512 can detect whether the first positioning member 41 is in the second interval position. The third detection unit 513 can detect whether the second positioning member 42 is in the third interval position.

[0036] In other embodiments, the first detection component includes a detection camera configured to collect images of the annular region. By analyzing the images of the annular region through machine vision, it is possible to detect whether at least one positioning member is located within the annular region using the detection camera, without specific limitations here.

[0037] Further, since the extraction mechanism 3 will move into the first height position at a relatively high speed, in order to enable the extraction mechanism 3 to accurately move to the extraction position, in this embodiment, the anti-interference detection system further includes a third detection component 53. The third detection component 53 can be triggered when the extraction mechanism 3 moves to the second height position. The distance between the second height position and the tray is greater than the distance between the first height position and the tray. When the third detection component 53 detects that the extraction mechanism 3 enters the second height position, the loading and unloading device can slow down the moving speed of the extraction mechanism 3, thereby reducing the speed when the extraction mechanism 3 moves into the first height position, so that the extraction mechanism 3 can accurately move to the extraction position.

[0038] The anti-interference detection system further includes a fourth detection component 54 configured to detect whether there is a tray on the alignment station 2. The fourth detection component 54 is electrically connected to the first detection component and the second detection component 52. When the fourth detection component 54 detects that there is a tray on the alignment station 2, the anti-interference detection system turns on the first detection component and the second detection component 52. When the fourth detection component 54 detects that there is no tray on the alignment station 2, the anti-interference detection system can turn off the first detection component and the second detection component 52, which not only saves energy but also increases the service life of the first detection component and the second detection component 52. Correspondingly, the fourth detection component 54 in this embodiment is arranged on the moving end of the lifting unit.

[0039] Preferably, in this embodiment, the first detection unit 511, the second detection unit 512, the third detection unit 513, the second detection component 52, the third detection component 53, and the fourth detection component 54 all include through-beam photoelectric sensors. The anti-interference detection system further includes a bracket for fixing the through-beam photoelectric sensors, and the bracket is provided with an adjustment part for adjusting the position of the through-beam photoelectric sensors.

[0040] In this embodiment, the second detection component 52 and the third detection component 53 are described in detail. Specifically, the second detection component 52 includes a first through-beam photoelectric sensor 522 and a first bracket 521, and the third detection component 53 includes a second through-beam photoelectric sensor 532 and a second bracket 531. A first positioning hole 5211 and a first guiding groove 5212 are provided on the first bracket 521. The first guiding groove 5212 is arc-shaped and extends circumferentially around the first positioning hole 5211. The first through-beam photoelectric sensor 522 is mounted on the first bracket 521 through the first positioning hole 5211 and the first guiding groove 5212. The first through-beam photoelectric sensor 522 can swing along the first guiding groove 5212 to adjust the detection position of the first through-beam photoelectric sensor 522. A second positioning hole 5311 and a second guiding groove 5312 are provided on the second bracket 531. The second guiding groove 5312 is arc-shaped and extends circumferentially around the second positioning hole 5311. The second through-beam photoelectric sensor 532 is mounted on the second bracket 531 through the second positioning hole 5311 and the second guiding groove 5312. The second through-beam photoelectric sensor 532 can swing along the second guiding groove 5312 to adjust the detection position of the second through-beam photoelectric sensor 532.

[0041] Furthermore, the loading and unloading device in this embodiment further includes an emergency stop device. The anti-interference detection system is electrically connected to the emergency stop device. The emergency stop device can emergently stop the extraction mechanism 3, so that in the case of interference, the loading and unloading device can be stopped to prevent the loading and unloading device from continuing to carry the tray, facilitating the inspection by maintenance personnel.

[0042] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limiting the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. An anti-interference detection system is arranged on the alignment station (2) for aligning the tray. The external extraction mechanism (3) can extract the tray located on the alignment station (2). At least one positioning member for aligning the tray is arranged on the alignment station (2), and it is characterized in that, The anti-interference detection system includes: A first detection component that can be triggered when the positioning member extends into an annular area located outside the edge of the tray. The annular area is selected to be suitable for the positioning member to correct the tray. The first detection component includes at least one detection unit, and at least one of the detection units corresponds to at least one of the positioning members one by one. The detection unit includes a transmissive photoelectric sensor; and A second detection component (52) that can be triggered when the extraction mechanism (3) moves to a first height position. The distance between the first height position and the tray is greater than the distance between the extraction position and the tray. The extraction position is selected to be suitable for the extraction mechanism (3) to extract the tray. The second detection component (52) includes a transmissive photoelectric sensor, and the transmissive photoelectric sensor can detect whether the extraction mechanism (3) enters the extraction position; A third detection component (53) that can be triggered when the extraction mechanism (3) moves to a second height position. The distance between the second height position and the tray is greater than the distance between the first height position and the tray.

2. The anti-interference detection system according to claim 1, characterized in that, The anti-interference detection system further includes a fourth detection component (54) configured to detect whether the tray is set at the alignment station (2). The fourth detection component (54) is electrically connected to the first detection component and the second detection component (52).

3. The anti-interference detection system according to claim 1, characterized in that, The anti-interference detection system further includes a bracket for fixing the transmissive photoelectric sensor, and an adjustment part for adjusting the position of the transmissive photoelectric sensor is provided on the bracket.

4. The anti-interference detection system according to claim 3, characterized in that, The adjustment part includes a positioning hole and a guiding groove. The guiding groove is arc-shaped and extends circumferentially around the positioning hole. The transmissive photoelectric sensor can swing along the guiding groove.

5. The anti-interference detection system according to claim 1, characterized in that, The first detection component includes a detection camera configured to collect an image of the annular area.

6. A loading and unloading device is provided with an alignment station (2) for aligning the tray. The loading and unloading device includes an extraction mechanism (3) capable of extracting the tray located on the alignment station (2), and it is characterized in that, The loading and unloading device includes the anti-interference detection system according to any one of claims 1-5.

7. The loading and unloading device according to claim 6, characterized in that, The loading and unloading device further includes an emergency stop device. The anti-interference detection system is electrically connected to the emergency stop device, and the emergency stop device can emergently stop the extraction mechanism (3).

Images