Safety light curtain device

Abstract

The utility model provides a safety light curtain device which is arranged in a pedestrian area in front of a material inlet and comprises two lifting type optical sensing devices A and two sensor sensing columns, the two lifting type optical sensing devices A are arranged on the two sides of the material inlet in a bilateral symmetry mode, and the two sensor sensing columns are arranged on the two sides of the material inlet in a bilateral symmetry mode. The two sensor sensing columns are arranged at the two corners of the side, away from the material inlet, of the pedestrian area corresponding to the two liftable optical sensing devices A. A liftable optical sensing device B corresponding to the other sensor sensing column is arranged on the side of one sensor sensing column. The device is reasonable in design, solves the problems of angle deviation of each component, failure of a grating safety light curtain or continuous alarm caused by the fact that production personnel touch a light deflector by mistake due to the fact that personnel need to enter and exit frequently, is convenient for specialized production, and improves the production efficiency.

Description

Technical Field

[0001] The utility model relates to a safety light curtain device. Background Art

[0002] At present, with the continuous advancement of automated production of mechanical equipment, more and more production enterprises adopt automated production to reduce labor costs. However, most production enterprises are unable to achieve fully automated production. They basically carry out daily production activities in semi-automatic and semi-manual ways. Therefore, production personnel need to constantly move around automated equipment. When some large equipment transfers materials, the entrance of the material placement point is more dangerous. Generally, fences are set up there for isolation. However, the production area is an area where personnel need to frequently enter and exit. The use of fences for isolation will seriously affect the production efficiency of manual labor. Therefore, grating safety light curtains are generally used to enclose the area. Grating safety light curtains are composed of transmitters and receivers. The transmitter generates a series of light beams, and then the receiver receives these light beams. When an object blocks the light beam, the receiver will recognize this change and trigger the safety system to stop the operation of the machine or equipment to prevent injury or damage to personnel. However, due to the very strict accuracy requirements between the transmitter and receiver of the grating safety light curtain and the light deflector, and the frequent entry and exit of personnel, production personnel always accidentally touch the light deflector, resulting in deviations in the angles of various components, and grating safety light curtains fail or continue to alarm. Summary of the invention

[0003] In view of this, the purpose of the present invention is to overcome the deficiencies in the above-mentioned prior art and provide a safety light curtain device.

[0004] The utility model is implemented by the following scheme: a safety light curtain device: the safety light curtain device is arranged in the pedestrian area in front of the material entrance, including two liftable optical sensor devices A and two sensor sensing columns, the two liftable optical sensor devices A are symmetrically arranged on both sides of the material entrance, the two sensor sensing columns correspond to the two liftable optical sensor devices A and are arranged at two corners of the pedestrian area away from the material entrance, a liftable optical sensor device B corresponding to the other sensor sensing column is arranged on the side of one sensor sensing column, and the two liftable optical sensor devices A, the two sensor sensing columns, and the liftable optical sensor device B together enclose a pedestrian alarm area.

[0005] Furthermore, the liftable optical sensing device A comprises a vertically arranged channel steel, a vertical lifting rail is installed on the bottom of the channel steel, and an optical sensor is slidably connected to the lifting rail.

[0006] Furthermore, an L-shaped support frame is slidably connected to the lifting rail, with the horizontal part of the L-shaped support frame at the bottom and the vertical part at the top. A sliding groove that cooperates with the lifting rail is arranged on the back side of the vertical part of the L-shaped support frame, and an optical sensor is installed on the horizontal part of the L-shaped support frame.

[0007] Furthermore, a plurality of guide holes are arranged on the left and right side wing plates of the channel steel at intervals from top to bottom, and the guide holes on the left and right side wing plates correspond to each other one by one. A horizontal limit block is arranged under the horizontal part of the L-shaped support frame, and a bolt is horizontally placed on one of the guide holes on one side wing plate, and the threaded end of the bolt passes through one side wing plate, the horizontal limit block, and the other side wing plate in sequence to extend to form an extended end, which is locked by a nut.

[0008] Furthermore, the lifting optical sensing device B comprises a bottom plate, a lifting column is mounted on the bottom plate, a support plate is arranged on the top of the lifting column, and an optical sensor is rotatably connected to the support plate.

[0009] Furthermore, the lifting column includes a guide rod and a sleeve rod, the guide rod is fixed on the base plate, the sleeve rod is sleeved outside the guide rod, the upper end of the guide rod is fixed under the support plate, a plurality of limit holes are arranged on the guide rod from top to bottom, and a limit bolt cooperating with the limit hole is horizontally placed on the lower end of the sleeve rod.

[0010] Furthermore, a rotating groove is provided in the middle of the support plate, a rotating disk is rotatably connected to the rotating groove, and an optical sensor is installed on the rotating disk.

[0011] Furthermore, the sensor induction column includes a base, a hollow elastic column is arranged on the base, and a plurality of white reflective strips corresponding to the optical sensors are pasted on the hollow elastic column at intervals from top to bottom.

[0012] Compared with the prior art, the utility model has the following beneficial effects: reasonable design, overcoming the problem that production personnel always accidentally touch the light deflector due to the need for personnel to frequently enter and exit, resulting in deviations in the angles of various components, malfunction of the grating safety light curtain or continuous alarms, facilitating specialized production and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the top view of the structure of an embodiment of the utility model;

[0014] Figure 2 for Figure 1 A-direction cross-sectional view;

[0015] Figure 3 This is a schematic diagram of the structure of a liftable optical sensor device B according to an embodiment of the utility model;

[0016] Figure 4This is a schematic diagram of the structure of the sensor sensing column of an embodiment of the utility model;

[0017] In the figure: 1-liftable optical sensing device A; 2-sensor sensing column; 3-liftable optical sensing device B; 4-channel steel; 5-lifting slide rail; 6-optical sensor; 7-L-shaped support frame; 8-slide groove; 9-guide hole; 10-horizontal limit block; 11-bolt; 12-nut; 13-bottom plate; 14-lifting column; 15-support plate; 16-optical sensor; 17-guide rod; 18-sleeve rod; 19-limit hole; 20-limit bolt; 21-rotating groove; 22-rotating disk; 23-base; 24-hollow elastic column; 25-white reflective strip. DETAILED DESCRIPTION

[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0019] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0020] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0021] like Figure 1-4 As shown, a safety light curtain device: the safety light curtain device is arranged in the pedestrian area in front of the material entrance, including two liftable optical sensor devices A1 and two sensor sensing columns 2, the two liftable optical sensor devices A are symmetrically arranged on both sides of the material entrance, the two sensor sensing columns correspond to the two liftable optical sensor devices A and are arranged at two corners of the pedestrian area away from the material entrance, and a liftable optical sensor device B3 corresponding to the other sensor sensing column is arranged on the side of one sensor sensing column, and the two liftable optical sensor devices A, the two sensor sensing columns, and the liftable optical sensor device B together form a pedestrian alarm area, that is, one of the liftable optical sensor devices A and one of the sensor sensing columns surround one surface, and the other liftable optical sensor device A and the other sensor sensing column and the liftable optical sensor device B surround the other two surfaces, leaving only the passage surface of the equipment, and when the optical sensor device recognizes that a production personnel passes by, it will trigger the safety system to stop the operation of the machine or equipment to prevent personnel from being injured or causing damage.

[0022] In this embodiment, the liftable optical sensing device A comprises a vertically arranged channel steel 4, a vertical lifting rail 5 is installed on the bottom of the channel steel, an optical sensor 6 is slidably connected to the lifting rail, an L-shaped support frame 7 is slidably connected to the lifting rail, the horizontal part of the L-shaped support frame is at the bottom, and the vertical part is at the top, a slide groove 8 matching the lifting rail is arranged on the back side of the vertical part of the L-shaped support frame, an optical sensor is installed on the horizontal part of the L-shaped support frame, and the left and right side wing plates of the channel steel are spaced from top to bottom. There are several guide holes 9, and the guide holes on the left and right side wing plates correspond to each other one by one. A horizontal limit block 10 is arranged under the horizontal part of the L-shaped support frame, and a bolt 11 is horizontally placed on one of the guide holes on one side wing plate. The threaded end of the bolt passes through one side wing plate, the horizontal limit block, and the other side wing plate in sequence to extend to form an extended end, which is locked by a nut 12. When in use, the position of the optical sensor can be adjusted by cooperating with the guide rail, which is convenient for adjusting the height of the optical sensor according to the test needs and facilitating the triggering of the optical sensor.

[0023] In this embodiment, the lifting optical sensor device B includes a base plate 13, a lifting column 14 is installed on the base plate, a support plate 15 is arranged on the top of the lifting column, an optical sensor 16 is rotatably connected to the support plate, the lifting column includes a guide rod 17 and a sleeve rod 18, the guide rod is fixed to the base plate, the sleeve rod is sleeved outside the guide rod, the upper end of the guide rod is fixed under the support plate, a plurality of limiting holes 19 are arranged on the guide rod from top to bottom, a limiting bolt 20 matching the limiting hole is horizontally arranged on the lower end of the sleeve rod, a rotating groove 21 is arranged in the middle of the support plate, and a rotating groove is rotatably connected to the rotating shaft 18. The moving disk 22 has an optical sensor installed on it. When in use, in order to prevent the production personnel from accidentally hitting the hollow elastic column and causing the hollow elastic column to hit the optical sensor, the lifting optical sensor device B is not on the straight line between the two sensor sensing columns, that is, the connecting straight line between the lifting optical sensor device B and the corresponding sensor sensing column is at an angle to the connecting straight line between the two sensor sensing columns. Therefore, the optical sensor on the lifting optical sensor device B needs to be rotated as needed, and the rotation is achieved by the rotating disk. At the same time, the lifting and lowering of the optical sensor is achieved by the lifting column, and the bottom plate is fixed to the bottom surface by bolts.

[0024] In this embodiment, the optical sensor is a prior art, and the specific model is: SICK.WL27-3P2430.

[0025] In this embodiment, for the sake of reasonable design, the sensor sensing column includes a base 23, on which a hollow elastic column 24 is arranged, and on which a plurality of white reflective strips 25 corresponding to the optical sensors are pasted at intervals from top to bottom. The base and the hollow elastic column are integrally formed of elastic plastic material, and the base is fixed to the bottom surface by bolts.

[0026] Unless otherwise stated, any technical solution disclosed in the above utility model, if it discloses a numerical range, then the disclosed numerical range is a preferred numerical range. Any technician in the field should understand that the preferred numerical range is only a numerical value with a more obvious technical effect or representative value among many feasible numerical values. Since there are too many numerical values ​​to be exhaustive, the utility model discloses only some numerical values ​​to illustrate the technical solution of the utility model, and the numerical values ​​listed above should not constitute a limitation on the scope of protection of the utility model.

[0027] If the words "first", "second" and so on are used in this article to limit components, those skilled in the art should know that the use of "first" and "second" is only for the convenience of description to distinguish the components. Unless otherwise stated, the above words have no special meaning.

[0028] If the present invention discloses or involves components or structures that are fixedly connected to each other, then, unless otherwise stated, the fixed connection can be understood as: a detachable fixed connection (for example, connection using bolts or screws), and can also be understood as: a non-detachable fixed connection (for example, riveting, welding). Of course, the mutual fixed connection can also be replaced by an integrated structure (for example, manufactured by one-piece molding using a casting process) (except when it is obviously impossible to use an one-piece molding process).

[0029] In addition, the orientations or positional relationships indicated by terms such as "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", and "outside" used in any of the technical solutions disclosed in the above-mentioned utility model are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this patent, and do 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 therefore cannot be understood as a limitation on this patent. Unless otherwise stated, the terms used to indicate shapes used in any of the technical solutions disclosed in the above-mentioned utility model include shapes that are approximate, similar or close to them.

[0030] Any component provided by the utility model can be assembled from multiple separate components, or can be a separate component manufactured by an integrated molding process.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the utility model, which should be included in the scope of the technical solution for protection of the utility model.

Claims

1. A safety light curtain device, characterized in that: The safety light curtain device is arranged in the pedestrian area in front of the material entrance, and includes two liftable optical sensor devices A and two sensor sensing columns. The two liftable optical sensor devices A are symmetrically arranged on both sides of the material entrance. The two sensor sensing columns correspond to the two liftable optical sensor devices A and are arranged at two corners of the pedestrian area away from the material entrance. A liftable optical sensor device B corresponding to the other sensor sensing column is arranged on the side of one of the sensor sensing columns. The two liftable optical sensor devices A, the two sensor sensing columns, and the liftable optical sensor device B together form a pedestrian alarm area.

2. The safety light curtain device according to claim 1, characterized in that; The liftable optical sensing device A comprises a vertically arranged channel steel, a vertical lifting rail is installed on the bottom of the channel steel, and an optical sensor is slidably connected to the lifting rail.

3. The safety light curtain device according to claim 2, characterized in that; An L-shaped support frame is slidably connected to the lifting rail, with the horizontal portion of the L-shaped support frame at the bottom and the vertical portion at the top. A sliding groove that cooperates with the lifting rail is arranged on the back side of the vertical portion of the L-shaped support frame, and an optical sensor is installed on the horizontal portion of the L-shaped support frame.

4. The safety light curtain device according to claim 3, characterized in that; A plurality of guide holes are arranged on the left and right side wing plates of the channel steel at intervals from top to bottom, and the guide holes on the left and right side wing plates correspond to each other one by one. A horizontal limit block is arranged under the horizontal part of the L-shaped support frame, and a bolt is horizontally placed on one of the guide holes on one side wing plate, and the threaded end of the bolt passes through one side wing plate, the horizontal limit block, and the other side wing plate in sequence to extend to form an extended end, which is locked by a nut.

5. The safety light curtain device according to claim 1, characterized in that; The lifting optical sensing device B comprises a bottom plate, a lifting column is mounted on the bottom plate, a support plate is arranged on the top of the lifting column, and an optical sensor is rotatably connected to the support plate.

6. The safety light curtain device according to claim 5, characterized in that; The lifting column includes a guide rod and a sleeve rod. The guide rod is fixed on the bottom plate, and the sleeve rod is sleeved outside the guide rod. The upper end of the guide rod is fixed under the support plate. A plurality of limiting holes are arranged on the guide rod from top to bottom at intervals, and a limiting bolt matching the limiting hole is horizontally arranged on the lower end of the sleeve rod.

7. The safety light curtain device according to claim 6, characterized in that; A rotating groove is arranged on the middle part of the supporting plate, a rotating disk is rotatably connected to the rotating groove, and an optical sensor is installed on the rotating disk.

8. The safety light curtain device according to any one of claims 4 or 7, characterized in that; The sensor induction column comprises a base, a hollow elastic column is arranged on the base, and a plurality of white reflective strips corresponding to the optical sensors are pasted on the hollow elastic column at intervals from top to bottom.

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