CN105070768B - A Photocell Fixing and Alignment System - Google Patents

Abstract

Fixed the embodiment of the invention discloses a kind of photoelectric tube and alignment system, including photoelectric tube, the photoelectric tube includes an emission port for being used to launch optical signal, a slide rail is provided with the emission port, the slide rail extends towards the direction away from the emission port, and plane where the slide rail is parallel with the optical signal that the emission port is launched, an optical signal regulating part is additionally provided with the photoelectric tube, the projecting direction of optical signal is adjusted by the optical signal regulating part, a catch for indicating graduation mark is removably disposed on the slide rail, plane where the catch is mutually perpendicular to the plane where the slide rail, and the catch and the distance between the emission port are adjustable.The projecting direction of optical signal is examined by catch, and the projecting direction of optical signal is calibrated by optical signal regulating part, so that Location quantization of the optical signal at receiving terminal is controllable, it is easy to operating personnel to find optical signal at receiving terminal, and then realize the alignment of photoelectric tube and receiving terminal.

Description

A Photocell Fixing and Alignment System

technical field

The invention relates to the technical field of automatic control, in particular to a photoelectric cell fixing and alignment system.

Background technique

The photoelectric tube is a switching element used to realize non-contact detection in the automatic control system. Its working principle is shown in Figure 1. The photoelectric tube 1 transmits an optical signal L to the receiving end 2, and the receiving end 2 receives the optical signal L according to the receiving state. Output the corresponding electrical signal to realize the conversion from optical signal to electrical signal.

In the steel smelting production line, as shown in Figure 2, the photoelectric cell 1 and the receiving end 2 are respectively arranged on both sides of the slab roller table. If there is a slab 3 on the slab roller table, the optical signal L is received by the slab 3. Blocking, so that the receiving end 2 cannot receive the optical signal L, and then output the first electrical signal; if there is no slab 3 on the slab roller table, the receiving end 2 can receive the optical signal L, and then output the second electrical signal, so According to the electrical signal output by the receiving end 2, it can be judged whether there is a slab 3 on the slab roller table, so as to realize the detection of the slab 3 in the steelmaking production line.

Since the detection result of the photoelectric cell is determined by whether the receiving end receives the optical signal, in order to ensure the accuracy of the detection result of the photoelectric cell, when there is no obstruction between the photoelectric cell and the receiving end, it is necessary to ensure that the receiving end can receive To the optical signal, that is to say, the photocell and the receiving end need to be in alignment during installation.

In the prior art, the alignment method of the photocell and the receiving end is generally as follows: firstly, the photocell is fixed on one side of the area to be detected by bolts; then the receiving end is moved on the other side of the area to be detected until the receiving end receives light. After receiving the signal, fix the receiving end in the corresponding position. However, when the photocell is fixed by bolts, the photocell is prone to inclination, which makes it difficult to determine the position of the optical signal at the receiving end, making it difficult for the operator to find the optical signal by moving the receiving end, especially when the photoelectric cell and When the distance between the receiving ends is relatively long, the slight deflection of the photocells will cause a large positional shift of the optical signal at the receiving end, further increasing the difficulty of the alignment work. In addition, in some work sites with strong vibrations, the photocells that have been aligned are prone to deflection again. The operator of the photocells that have been deflected again can only readjust according to the above alignment method, and the workload is relatively large.

Contents of the invention

The embodiment of the present invention provides a photoelectric cell fixing and alignment system to solve the technical problem in the prior art that the photoelectric cell and the receiving end are difficult to align because the position of the optical signal at the receiving end is difficult to determine.

In order to solve the above technical problems, the embodiment of the present invention discloses the following technical solutions:

A photoelectric cell fixing and alignment system, comprising a photoelectric cell, the photoelectric cell includes a launch port for emitting light signals, a slide rail is provided at the launch port, and the slide rail faces away from the launch port direction, and the plane where the slide rail is located is parallel to the optical signal emitted by the launch port, and an optical signal adjustment part is also provided on the photocell, through which the projection direction of the optical signal is adjusted. A block marked with a scale line is detachably arranged on the slide rail, the plane where the block is located is perpendicular to the plane where the slide rail is located, and the distance between the block and the launch port is adjustable .

Preferably, a sliding block is provided on the sliding rail, the sliding block is slidably connected with the sliding rail, and the blocking piece is detachably arranged on the sliding block.

Preferably, the slider includes a slider body, a roller is provided at both ends of the slider body, and the roller is embedded in the inside of the slide rail, and the outer side of the roller is in contact with the side of the slide rail. Inside offset.

Preferably, the photoelectric cell includes a cylindrical body, the launch port is arranged at one end of the cylindrical body, and the system further includes a sleeve matching the photoelectric cell, and the photoelectric cell is embedded in the the inside of the sleeve.

Preferably, the optical signal adjustment member includes an adjustment bolt arranged parallel to the slide rail, the adjustment bolt is screwed into the side wall of the sleeve, and its end is abutted against the outside of the columnar body.

Preferably, the number of the adjusting bolts is two or more, and they are arranged on both sides of the sleeve respectively.

Preferably, the number of the adjusting bolts is four, which are arranged symmetrically on both sides of the sleeve.

Preferably, the sleeve and the slide rail are respectively fixed on a mounting seat, and fixing bolts are provided on the mounting seat.

Preferably, when the optical signal is perpendicular to the plane where the blocking plate is located, the optical signal is projected on the center of the blocking plate.

Preferably, the scale marks on the barrier are linear scale marks, ring scale marks or cells.

It can be seen from the above technical solutions that the photoelectric cell fixing and alignment system provided by the embodiment of the present invention checks the projecting direction of the optical signal through the baffle, and calibrates the projecting direction of the optical signal through the optical signal adjustment member, so that the optical signal The position at the receiving end is quantitatively controllable, which is convenient for the operator to find the optical signal at the receiving end, and then realizes the alignment of the photoelectric cell and the receiving end.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, In other words, other drawings can also be obtained from these drawings on the premise of not paying creative work.

Fig. 1 is a schematic diagram of the photoelectric cell working principle in the prior art;

Fig. 2 is a schematic diagram of the installation position of the photoelectric cell in the steel smelting production line in the prior art;

Fig. 3 is a schematic structural diagram of a photocell fixing and alignment system provided by an embodiment of the present invention;

Fig. 4 is a schematic diagram of the projection direction of the optical signal provided by the embodiment of the present invention;

Fig. 5 is a schematic structural diagram of a blocking plate provided by an embodiment of the present invention;

Fig. 6 is a schematic diagram of the inspection method of the projection direction of the optical signal according to the embodiment of the present invention;

7 is a schematic diagram of an optical signal offset distance according to an embodiment of the present invention;

The symbols in Figure 1-Figure 7 are represented as: 1-photocell, 2-receiving end, 3-slab, 4-slider, 5-slide rail, 6-mounting seat, 7-block, 8-fixing bolt , 9-Adjusting bolt, 10-Sleeve, 11-Cylinder body, 12-Emission port, 41-Roller, L-light signal, L1-first light signal, L2-second light signal, S-light signal projection area , M-slide rail central axis, P1-first position, P2-second position.

detailed description

In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described The embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

The embodiment of the present invention provides a photoelectric tube fixing and alignment system, which checks the projection direction of the optical signal L through the blocking plate 7, and calibrates the projection direction of the optical signal L through the optical signal adjustment member, so that the optical signal L is at the receiving end The quantized and controllable position of 2 is convenient for the operator to search for the optical signal L at the receiving end 2, thereby realizing the alignment of the photoelectric cell 1 and the receiving end 3 .

Fig. 3 is a schematic structural diagram of a photoelectric cell fixing and alignment system provided by an embodiment of the present invention. As shown in Fig. 3, a photoelectric cell fixing and alignment system provided by an embodiment of the present invention includes a photoelectric cell 1. 1 includes a columnar body 11 and an emission port 12 arranged at one end of the columnar body 11. The photoelectric cell 1 emits an optical signal L through the emission port 12. The optical signal L can be an optical signal L of infrared rays, ultraviolet rays or other wave bands. No restrictions.

The photocell 1 is fixed on the mount 6 through a sleeve 10, the sleeve 10 is a cylindrical body with one end open, the photocell 1 is embedded in the inside of the sleeve 10, and the emission port 12 of the photocell 1 faces the side of the sleeve 10. The open end is convenient for emitting the optical signal L. The mounting seat 6 is a rectangular plate, which is fixed at the corresponding position of the area to be detected by the fixing bolt 8, and in order to connect firmly, to prevent the mounting seat 6 from loosening due to the vibration of the work site, each of the four corners of the rectangular plate is provided with a A fixing bolt 8 is tightened.

Further, a slide rail 5 is also provided on the mounting base 6, and the slide rail 5 is arranged at the launch port 12 and extends in a direction away from the launch port 12, and the plane where the slide rail 5 is located is in line with the optical signal L emitted by the launch port 12. Parallel, that is, the projection direction of the optical signal L is always in a plane parallel to the slide rail 5 .

Fig. 4 is a schematic diagram of the projection direction of the optical signal provided by the embodiment of the present invention. As shown in Fig. 4, the projection direction of the optical signal L is in a plane parallel to the slide rail 5, then when the optical signal L is adjusted by the optical signal adjustment member When the projection direction of the light signal L forms a fan-shaped light signal projection area S in the plane where it is located, and since the emission port 12 of the photocell 1 is between the two sides of the slide rail 5, the light signal projection area S The projection on the plane of the slide rail 5 is between the two sides of the slide rail 5 . That is to say, the function of the optical signal adjusting member is equivalent to adjusting the angle θ between the optical signal L and the central axis M of the slide rail.

Since the optical signal L is always projected along the direction of the emitting port 12 in this embodiment, adjusting the projecting direction of the optical signal L is equivalent to adjusting the orientation of the emitting port 12 . In this embodiment, the optical signal adjustment member includes four adjusting bolts 9 symmetrically arranged on both sides of the sleeve 10. The adjusting bolts 9 are screwed into the side wall of the sleeve 10, and the ends thereof are connected to the cylindrical body 11 of the photoelectric cell 1. The outer sides offset each other to fix the photocell 1 , wherein the orientation of the emission port 12 is adjusted by adjusting the screw-in depth of the corresponding adjusting bolt 9 .

In order to facilitate those skilled in the art to better understand the adjustment method of the projection direction of the optical signal in the present invention, a specific adjustment process will be described below in conjunction with FIG. As a benchmark, location words such as upper left, lower left, upper right, and lower right are introduced, but they should not be taken as limitations on the protection scope of the present invention.

For example, when the screw-in depth of the adjusting bolt 9 located at the lower right and upper left of the photocell 1 is increased by rotating the adjusting bolt 9, the photoelectric cell 1 is inclined upward under the abutment effect of the adjusting bolt 9, that is, the emission port 12 is inclined upward, and then The effect of adjusting the projection direction of the light signal L is achieved, wherein the inclination angle of the photoelectric cell 1 can be correspondingly adjusted by adjusting the screw-in depth of the bolt 9 . It should be pointed out that when the screw-in depth of the lower right and upper left adjustment bolts 9 of the photocell 1 increases, the screw-in depths of the upper right and lower left adjustment bolts 9 of the photocell 1 decrease correspondingly, so as to ensure that the photocell 1 is always fixed inside the sleeve 10.

The optical signal adjusting member described above is only an exemplary description of the present invention, and those skilled in the art can adjust the projecting direction of the optical signal in other ways according to actual needs, so as to achieve the same technical effect of this embodiment. For example, a motor can be used to drive the photoelectric tube to rotate to adjust the projection direction of the optical signal, or a photoelectric tube with automatic projection direction adjustment can be directly used. In addition, the number and orientation of the adjusting bolts can also be adjusted correspondingly according to needs. Usually, the number of adjusting bolts is set to two or more, which are respectively arranged on both sides of the sleeve.

It can be easily seen in Figure 4 that the larger the angle θ between the optical signal L and the central axis M of the slide rail, the farther the optical signal L deviates from the central axis M of the slide rail. The offset position at 2 is also larger. In order to facilitate the operator to find the projection point of the optical signal L at the receiving end 2, the projection direction of the optical signal L is preferably controlled near the central axis M of the slide rail, that is, the angle θ between the optical signal L and the central axis M of the slide rail The smaller the better, an ideal state is that the projection of the optical signal L on the plane where the slide rail 5 is located coincides with the central axis M of the slide rail, that is, the angle θ between the optical signal L and the central axis M of the slide rail size is 0.

In the embodiment of the present invention, the projecting direction of the optical signal L is checked by sliding the blocking plate 7 on the slide rail 5 . Specifically, a slider 4 is correspondingly arranged on the slide rail 5, and the slider 4 includes a slider body, and a roller 41 is respectively arranged at two ends of the slider body, and the roller 41 is embedded in the inside of the slide rail 5, and the roller 41 The outside of the slide rail 5 abuts against the inside of the slide rail 5, so that the slider 4 slides along the slide rail 5 in a manner that the roller 41 rotates. The slider 4 is detachably provided with a baffle 7 marked with a scale. The plane where the baffle 7 is located is perpendicular to the plane where the slide rail 5 is located. By sliding, the baffle 7 is driven to move on the slide rail 5, and then the baffle is adjusted. 7 and the distance between the launch port 12. Of course, the slider 4 can also adopt other sliding methods on the slide rail 5, which is not limited in the present invention.

Fig. 5 is a structural schematic diagram of a block provided by the embodiment of the present invention. As shown in Fig. 5, equidistant linear scale marks are symmetrically arranged on the block 7 with the central axis of the block 7 as the center, and the distance from the block is The farther the central axis of the sheet 7 is, the larger the scale value is. Among them, the purpose of setting the scale line on the blocking plate 7 is to identify the projection point position of the optical signal L on the blocking plate 7, and to play the role of a scale. Those skilled in the art can also use ring-shaped scale lines, unit cells, etc. The scale line in this embodiment is equivalently replaced by other commonly used marking methods, and the inspection method of the projection direction of the optical signal L will be described in detail below in conjunction with FIG. 6 .

Fig. 6 is a schematic diagram of the inspection method of the projection direction of the optical signal according to the embodiment of the present invention. As shown in Fig. 6, if the optical signal L is parallel to the central axis M of the slide rail, for example, the projection direction of the first optical signal L1 is perpendicular to the blocking plate 7, then During the process of moving the blocking sheet 7 from the first position P1 to the second position P2 by the slider 4, the projection point of the first optical signal L1 on the blocking sheet 7 remains unchanged (at the same scale value on the blocking sheet 7), As a preferred embodiment, when the optical signal L is perpendicular to the plane where the baffle 7 is located, the optical signal L is projected on the center of the baffle 7, that is, the projection point of the optical signal L1 on the baffle 7 is at the position of the O scale ; If the optical signal L is not parallel to the central axis M of the slide rail, such as the second optical signal L2, then the second optical signal L2 is in the process of moving the blocking plate 7 from the first position P1 to the second position P2. The scale value at which the projection point on is gradually increased. That is to say, when the block 7 is moved, it can be judged whether the light signal L is tilted (relative to the central axis M of the slide rail) by observing the change of the projected position of the light signal L on the block 7. The tilt is to adjust the projection direction of the optical signal L through the optical signal adjustment part, and then check again until the optical signal L is adjusted to the vertical position of the blocking plate 7, which is convenient for the operator to find the projection point of the optical signal L at the receiving end 2 , for further alignment operations.

In order to make it easier for those skilled in the art to better understand the technical solution, the following will be further described in conjunction with the method of using the photocell fixing and alignment system, which mainly includes the following steps:

Step S100: Turn on the photoelectric tube 1, and the photoelectric tube 1 emits a light signal L;

Step S200: moving the slider 4, and judging whether the light signal L is inclined according to the projection point of the light signal L on the blocking plate 7;

Step S300: If the optical signal L is tilted, adjust the projection direction of the optical signal L through the optical signal adjustment member, and return to step S200; otherwise, enter step S400;

Step S400: Remove the blocking plate 7 on the slider 4, and find the projection point of the optical signal L through the receiving end 2.

In the prior art, since the projection direction of the optical signal L is not easy to determine, the position of the optical signal L at the receiving end 2 is in a large fluctuation range, and it is difficult for the operator to find the projection point of the optical signal L at the receiving end 2; After the above steps, before the operator finds the projection point of the optical signal L through the receiving end 2, he has ensured that the projection direction of the optical signal L is parallel to the central axis M of the slide rail. Therefore, the position of the optical signal L at the receiving end 2 has been defined Within a small fluctuation range, the operator can easily find the projection point of the optical signal L through the receiving end 2 . It can be seen from this that as long as the position of the optical signal L at the receiving end 2 is limited within a known small range, it can help the operator to find the projection point conveniently and quickly. Therefore, the above-mentioned adjustment of the optical signal L To be parallel to the central axis M of the slide rail is only a special processing method in this embodiment, and the embodiment of the present invention may also use the following method to limit the position of the optical signal L at the receiving end 2 .

Fig. 7 is a schematic diagram of the offset distance of the optical signal according to the embodiment of the present invention. As shown in Fig. 7, the photoelectric cell 1 emits the optical signal L, and when the blocking plate 7 is in the first position P1 and the second position P2, the projection point of the optical signal L is at The scale values on the baffle 7 are respectively x1 and x2 (not shown in the figure), and the distance between the first position P1 and the launch port 12 is a, and the distance between the second position P2 and the launch port 12 is b , the angle θ=arc tan((b-a)/(x1-x2)) between the optical signal L and the central axis M of the slide rail can be obtained from the above relationship. In addition, according to the distance between the transmitting port 12 and the receiving end 2 The distance c of the optical signal L at the receiving end 2 can be obtained as the offset distance d=ctanθ.

That is to say, the photocell fixing and alignment system provided by the embodiment of the present invention can accurately calculate the offset distance of the optical signal L at the receiving end 2, and then limit the projection point of the optical signal L at the receiving end 2 to Within a known small range, it is convenient for the operator to quickly find the projection point.

In summary, the photocell fixing and alignment system provided by the present invention makes the position of the optical signal at the receiving end quantitatively controllable, that is, the fluctuation area of the optical signal at the receiving end is limited to a known small range, It is convenient for the operator to find the projection point of the optical signal at the receiving end, and then realize the alignment of the photocell and the receiving end.

It should be noted that in this article, relative terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply these No such actual relationship or order exists between entities or operations. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or device. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.

The above descriptions are only specific embodiments of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (9)

1. a kind of photoelectric tube is fixed and alignment system, including photoelectric tube (1), the photoelectric tube (1), which includes one, to be used to launch light letter The emission port (12) of number (L), it is characterised in that emission port (12) place is provided with a slide rail (5), the slide rail (5) is towards deviating from The direction extension of the emission port (12), and the optical signal (L) that plane where the slide rail (5) is launched with the emission port (12) It is parallel, an optical signal regulating part is additionally provided with the photoelectric tube (1), optical signal (L) is adjusted by the optical signal regulating part A catch (7) for indicating graduation mark, the plane where the catch (7) are removably disposed on projecting direction, the slide rail (5) It is mutually perpendicular to the plane where the slide rail (5), and the catch (7) and the distance between the emission port (12) are adjustable； The slide rail (5) is provided with a sliding block (4), and the sliding block (4) is slidably connected with the slide rail (5), and the catch (7) is detachable Ground is arranged on the sliding block (4)；The sliding block (4) is slidably connected for when the sliding block (4) is in institute with the slide rail (5) State when being in diverse location on slide rail (5), according to light spot position of the optical signal (L) on catch (7) and photoelectric tube (1) and connect The distance between receiving end calculates offset distance of the optical signals (L) in receiving terminal.

2. photoelectric tube according to claim 1 is fixed and alignment system, it is characterised in that the sliding block (4) includes one and slided Block body, the two ends of the slider body respectively set a roller (41), and the roller (41) is embedded in the slide rail (5) inside, and The outside of the roller (41) on the inside of the slide rail (5) with offseting.

3. photoelectric tube according to claim 1 or 2 is fixed and alignment system, it is characterised in that the photoelectric tube (1) includes One cylindrical body (11), the emission port (12) is arranged on one end of the cylindrical body (11), the system also include one with The sleeve (10) that the photoelectric tube (1) matches, the photoelectric tube (1) is embedded in the inside of the sleeve (10).

4. photoelectric tube according to claim 3 is fixed and alignment system, it is characterised in that the optical signal regulating part includes The regulating bolt (9) being be arranged in parallel with the slide rail (5), the regulating bolt (9) screws in the side wall of the sleeve (10), and its End on the outside of the cylindrical body (11) with offseting.

5. photoelectric tube according to claim 4 is fixed and alignment system, it is characterised in that the number of the regulating bolt (9) Measure for two or more, be separately positioned on the both sides of the sleeve (10).

6. photoelectric tube according to claim 5 is fixed and alignment system, it is characterised in that the number of the regulating bolt (9) Measure as four, be symmetricly set on the both sides of the sleeve (10).

7. photoelectric tube according to claim 3 is fixed and alignment system, it is characterised in that the sleeve (10) and the cunning Rail (5) is separately fixed in a mounting seat (6), and the mounting seat (6) is provided with fixing bolt (8).

8. photoelectric tube according to claim 1 is fixed and alignment system, it is characterised in that the optical signal (L) with it is described When plane where catch (7) is vertical, the optical signal (L) is incident upon the center of the catch (7).

9. photoelectric tube according to claim 1 is fixed and alignment system, it is characterised in that the scale on the catch (7) Line is wire graduation mark, ring-type graduation mark or cell.