A comprehensive protection device and method for photoelectric sensor

Abstract

The present invention discloses an all-round protection device for a photoelectric sensor, comprising a mounting seat, a shaft body being arranged on the mounting seat, a lifting mechanism being arranged at the lower end of the shaft body, a sleeve body being arranged outside the shaft body, cross bars being connected to both sides of the sleeve body, storage boxes being arranged at the outer ends of the cross bars on both sides, an opening being arranged above the storage boxes, a transmitting head being arranged in one of the storage boxes for moving up and down, and a receiving head being arranged in the other storage box for moving up and down. Meanwhile, an all-round protection method for a photoelectric sensor is disclosed, the transmitting head is arranged in alignment with the receiving head for preventing dust accumulation or accidental contact of the staff from causing damage to the sensor, and dust on the surfaces of the transmitting head and the receiving head can be automatically cleaned by a cleaning roller during each folding process of the transmitting head and the receiving head, thereby ensuring regular maintenance of the surfaces of the transmitting head and the receiving head, and ensuring the working stability of the entire conveying mechanism.

Description

Technical Field

[0001] The invention relates to a photoelectric sensor, and in particular to an all-round protection device and method for the photoelectric sensor. Background Art

[0002] Photoelectric sensors are devices that convert light signals into electrical signals. Their working principle is based on the photoelectric effect. The photoelectric effect refers to the phenomenon that when light shines on certain substances, the electrons of the substances absorb the energy of photons and produce corresponding electrical effects.

[0003] Usually divided into through-beam photoelectric sensors, reflective photoelectric sensors and diffuse reflection photoelectric sensors, etc. When the conveying mechanism detects whether the conveyed object exists, the through-beam photoelectric sensor is usually used for sensing, so as to facilitate the subsequent placement of the conveyed object. Since the two components of the through-beam photoelectric sensor are installed on both sides of the conveying mechanism, it is very difficult to align the rays, which leads to installation difficulties. Since there are many staff outside the conveying mechanism, the through-beam photoelectric sensor is often damaged or the angle changes due to accidental contact, and it cannot work normally. At the same time, since the conveying mechanism is usually used in a processing factory and there is a lot of dust, if the surface of the sensor is not cleaned regularly, the sensitivity of the through-beam photoelectric sensor will be greatly reduced, which will also lead to failure to work normally.

[0004] Therefore, the existing photoelectric sensors need to be further improved.

[0005] SUMMARY OF THE INVENTION

[0006] One object of the present invention is to provide an all-round protective device for a photoelectric sensor, which can be quickly aligned and installed, reduce sensor damage and regularly maintain the sensor, and provide all-round protection for the sensor.

[0007] In order to achieve the above object, the present invention adopts the following scheme:

[0008] A omnidirectional protection device for a photoelectric sensor comprises a mounting seat, a shaft body is arranged on the mounting seat, a lifting mechanism is arranged at the lower end of the shaft body, a sleeve body is arranged outside the shaft body, a cross bar is connected to each of the two sides of the sleeve body, a storage box is arranged at the outer ends of the cross bars on both sides, an opening is arranged above the storage box body, a transmitting head is arranged in one of the storage boxes for moving up and down, a receiving head is arranged in the other storage box for moving up and down, the transmitting head is aligned with the receiving head position, a connecting structure is arranged between the transmitting head and the receiving head and the output end of the lifting mechanism, a rotating mechanism is arranged on the inner wall of the storage box, a cleaning roller is arranged at the output end of the rotating mechanism, a vertical driving rack is arranged on the transmitting head and the receiving head, a passive gear is arranged at the rotating shaft of the rotating mechanism, the passive gear is meshed with the driving rack on the corresponding side for transmission, a movable baffle structure capable of closing the opening is arranged on the cross bar, and a driving strip groove is arranged on the outer wall of the receiving head and the transmitting head;

[0009] The driving strip groove comprises an oblique strip groove which is inclined inward from inside to outside, and the inner end of the oblique strip groove is connected to the vertical strip groove;

[0010] The movable baffle structure is provided with a driving shaft body, and the shaft body is inserted into the driving strip groove;

[0011] A driving mechanism capable of rotating the sleeve body is arranged between the sleeve body and the fixing part of the lifting mechanism.

[0012] Furthermore, the lifting mechanism is a telescopic motor, and the telescopic motor is arranged downward.

[0013] Furthermore, the connection structure includes a push rod arranged at the lower end of the transmitting head and the receiving head, and the lower surface of the storage box is provided with a through hole for the push rod to move up and down, the push rod is movably inserted in the through hole, and a connecting plate is provided between the push rod and the output end of the telescopic motor.

[0014] Furthermore, the rotating mechanism includes a rotating shaft seat arranged on the inner wall of the storage box, and a rotating shaft body is rotatably mounted on the rotating shaft seat.

[0015] Furthermore, the cleaning roller includes a brush fixing cylinder sleeved on the circumferential outer wall of the rotating shaft body, and the outer wall of the brush fixing cylinder is covered with brush bodies.

[0016] Furthermore, the movable baffle structure includes a baffle receiving groove arranged on the surface of the opening, a baffle body for closing or opening the opening is movably arranged in the baffle receiving groove, and the baffle receiving groove is arranged in the cross bar.

[0017] Furthermore, the width of the driving strip groove is the same as the diameter length of the driving shaft body.

[0018] Furthermore, the driving mechanism includes a screw seat arranged on the lower surface of the sleeve, a screw body is rotatably mounted on the screw seat, a ring gear is sleeved on the circumferential outer wall of the telescopic motor fixing part, and the screw body and the ring gear are threadedly connected.

[0019] Furthermore, a screw hole is provided at the shaft end of the screw rod body.

[0020] Furthermore, a control module and a signal receiving module are provided on the lower surface of one of the cross bars, the control module and the signal receiving module are communicatively connected, and the control module is communicatively connected to the lifting mechanism and the transmitting head.

[0021] Another object of the present invention is to provide an all-round protection method for a photoelectric sensor, which can clean the surface dust during the closed protection process of the photoelectric sensor;

[0022] In order to achieve the above object, the present invention adopts the following scheme:

[0023] A comprehensive protection method for a photoelectric sensor, comprising:

[0024] Step 1: Control the lifting mechanism to descend, and during the descent process, drive the transmitter and receiver heads on both sides to descend synchronously;

[0025] Step 2: During the descent of the transmitting head and the receiving head, the driving rack and the passive gear are meshed and driven to drive the passive gear to rotate;

[0026] Step 3: According to the rotation of the passive gear in step 2, the cleaning roller is driven to rotate, and the cleaning roller is close to the transmitting head or receiving head on the corresponding side to clean and remove dust;

[0027] Step 4: During the descent of the transmitter head and the receiving head, the driving bar groove cooperates with the driving shaft on the corresponding side. When the driving bar groove moves to the bottom of the stroke, the driving bar groove cooperates with the driving shaft to completely pull out the movable baffle structure and close the opening, thereby completing all-round protection of the transmitter head or the receiving head.

[0028] In summary, the present invention has the following beneficial effects compared with the prior art:

[0029] The present invention solves the shortcomings of the existing through-beam photoelectric sensor in the process of detecting conveyed objects in the conveying mechanism. The two cross bars of the present invention can ensure that the transmitting head and the receiving head are always in an aligned state, and the installation is more convenient. At the same time, when the conveying equipment stops running, the transmitting head and the receiving head can be automatically retracted to form a closed space for protection to prevent dust accumulation or accidental touch by the staff to cause damage to the sensor. During the process of each retraction of the transmitting head and the receiving head, the cleaning roller can automatically clean the dust on the surface of the transmitting head and the receiving head to ensure regular maintenance of the surface of the transmitting head and the receiving head, and can ensure the stability of the operation of the entire conveying mechanism, providing a setting method of all-round protection, and the structure is simple and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 One of the three-dimensional diagrams of the present invention;

[0031] Figure 2 This is the second stereogram of the present invention;

[0032] Figure 3 It is a schematic diagram of the installation of the present invention and the conveying mechanism;

[0033] Figure 4 It is a schematic diagram of the internal structure of the present invention;

[0034] Figure 5 for Figure 4 A partial enlarged view of point B;

[0035] Figure 6 An exploded view of the present invention;

[0036] Figure 7 A top view of the present invention;

[0037] Figure 8 for Figure 7 Section view along line AA;

[0038] Fig. 9 This is the third stereogram of the present invention;

[0039] Fig.10 It is a front view of the internal structure of the present invention;

[0040] Fig.11 It is the control principle diagram of the present invention. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] See also Figure 1-11 The present invention provides an all-round protection device for a photoelectric sensor, comprising a mounting seat 1, a shaft body 2 is arranged on the mounting seat 1, a lifting mechanism 3 is arranged at the lower end of the shaft body 2, a sleeve body 4 is arranged outside the shaft body 2, and a cross bar 5 is connected to each side of the sleeve body 4, and a storage box 6 is arranged at the outer end of the cross bar 5 on both sides, and an opening 7 is arranged above the storage box 6, a transmitter head 8 is arranged in one of the storage boxes 6 so as to move up and down, and a receiving head 9 is arranged in the other storage box 6 so as to move up and down, and the transmitter head 8 is arranged in alignment with the receiving head 9, and the transmitter head 8 and the receiving head 9 are arranged in a position. A connecting structure 10 is provided between the receiving head 9 and the output end of the lifting mechanism 3, a rotating mechanism 11 is provided on the inner wall of the storage box 6, a cleaning roller 12 is provided on the output end of the rotating mechanism 11, a vertical driving rack 13 is provided on the transmitting head 8 and the receiving head 9, a passive gear 14 is provided at the rotating shaft of the rotating mechanism 11, the passive gear 14 is meshed with the driving rack 13 on the corresponding side for transmission, a movable baffle structure 15 capable of closing the opening 7 is provided on the cross bar 5, and a driving strip groove 16 is provided on the outer wall of the receiving head 9 and the transmitting head 8;

[0043] The driving strip groove 16 of the present invention includes an oblique strip groove 161 which is inclined from inside to outside and inward, and the inner end of the oblique strip groove 161 is connected to a vertical strip groove 162;

[0044] The movable baffle structure 15 of the present invention is provided with a driving shaft 17, and the driving shaft 17 is inserted into the driving strip groove 16;

[0045] In the present invention, a driving mechanism 18 capable of rotating the sleeve 4 is provided between the sleeve 4 and the fixed part of the lifting mechanism 3;

[0046] The working principle of the above structure is:

[0047] Preliminary installation: Install the mounting base 1 at the bottom of the external conveying mechanism, and the storage boxes 6 on both sides are respectively set on the side corresponding to the conveying mechanism. According to the requirements of the detection angle and distance, adjust the driving mechanism 18, and the cross bar 5 rotates around the fixed axis 2. The detection range changes, so that the angle between the connecting line between the two storage boxes 6 and the conveying mechanism changes to meet the detection requirements.

[0048] A comprehensive protection method for a photoelectric sensor, comprising:

[0049] Step 1: Control the lifting mechanism 3 to descend, and during the descent process, drive the transmitting head 8 and the receiving head 9 on both sides to descend synchronously;

[0050] Step 2: During the descent of the transmitting head 8 and the receiving head 9, the driving rack 13 and the passive gear 14 are meshed and driven to drive the passive gear 14 to rotate;

[0051] Step 3: According to the rotation of the passive gear 14 in step 2, the cleaning roller 12 is driven to rotate, and the cleaning roller 12 is close to the transmitting head 8 or the receiving head 9 on the corresponding side to clean and remove dust;

[0052] Step 4: During the descent of the transmitting head 8 and the receiving head 9, the driving strip groove 16 cooperates with the driving shaft 17 on the corresponding side. When the driving strip groove 16 moves to the bottom of the stroke, the driving strip groove 16 cooperates with the driving shaft 17 to completely pull out the movable baffle structure 15, close the opening 7, and complete the all-round protection of the transmitting head 8 or the receiving head 9.

[0053] The principle of storing and cleaning dust of the transmitter head 8 and the receiver head 9:

[0054] When the conveying mechanism stops working, the lifting mechanism 3 is controlled to descend. During the descent process, the transmitting heads 8 and the receiving heads 9 on both sides are driven to descend simultaneously through the connecting structure 10, so that the transmitting heads 8 and the receiving heads 9 are lowered into the storage box 6. At this time, the driving rack 13 is synchronously lowered, and during the descent process, the driven gear 14 is driven to rotate. The rotating driven gear 14 drives the internal cleaning roller 12 to rotate. The cleaning roller 12 contacts the surface of the transmitting head 8 or the receiving head 9 to clean the dust on the surface of the transmitting head 8 or the receiving head 9. While the transmitting head 8 and the receiving head 9 are descending, the driving strip groove 16 cooperates with the driving shaft 17. The driving shaft 17 moves under the drive of the driving strip groove 16, so that the movable baffle structure 15 extends out to close the opening 7, thereby protecting the transmitting head 8 or the receiving head 9.

[0055] The lifting mechanism 3 of the present invention is a telescopic motor, and the telescopic motor is arranged downward, providing a setting mode of the lifting mechanism.

[0056] The connection structure 10 described in the present invention includes a push rod 101 arranged at the lower end of the transmitting head 8 and the receiving head 9. The lower surface of the storage box 6 is provided with a through hole 102 for the push rod 101 to move up and down. The push rod 101 is movably inserted into the through hole 102. A connecting plate 103 is provided between the push rod 101 and the output end of the telescopic motor 301 to ensure synchronous movement with the transmitting head 8 or the receiving head 9.

[0057] The rotating mechanism 11 of the present invention includes a rotating shaft seat 111 arranged on the inner wall of the storage box 6, and a rotating shaft body 112 is rotatably mounted on the rotating shaft seat 111.

[0058] The cleaning roller 12 of the present invention comprises a brush fixing cylinder 121 sleeved on the outer circumferential wall of the rotating shaft 112 , and the outer wall of the brush fixing cylinder 121 is covered with a brush body 122 , which is a soft bristle arrangement.

[0059] The movable baffle structure 15 of the present invention includes a baffle receiving groove 151 arranged on the surface of the opening 7 , in which a baffle body 152 for closing or opening the opening 7 is movably arranged, and the baffle receiving groove 151 is arranged in the cross bar 5 .

[0060] The width of the driving strip groove 16 of the present invention is the same as the diameter of the driving shaft 17 .

[0061] The driving mechanism 18 of the present invention includes a screw seat 181 arranged on the lower surface of the sleeve 4, a screw body 182 is rotatably mounted on the screw seat 181, a ring gear 183 is sleeved on the circumferential outer wall of the fixed part of the telescopic motor 301, and the screw body 182 and the ring gear 183 are threadedly connected, forming a structure for adjusting the angle between the connecting line of the transmitting head 8 and the receiving head 9 and the conveying mechanism.

[0062] The shaft end of the screw rod body 182 of the present invention is provided with a screw hole 100 .

[0063] The present invention is provided with a control module 200 and a signal receiving module 300 on the lower surface of one of the cross bars 5, the control module 200 and the signal receiving module 300 are communicatively connected, and the control module 200 is communicatively connected to the lifting mechanism 3 and the transmitting head 8; a setting mode for automatically starting the present invention is provided, a sensor is provided on the conveying mechanism, when the sensor receives that the conveying mechanism stops working, the sensor sends a command to the signal receiving module 300, the signal receiving module 300 transmits the signal to the control module 200, and the control module 200 sends a command to control the lifting mechanism 3 to descend and the transmitting head 8 to close;

[0064] According to the above structure, the control principle is as follows:

[0065] Step 1: A signal sensing device is provided on the conveying mechanism on which the photoelectric sensor is installed, and the signal sensing device is used to receive the start or stop of the conveying mechanism;

[0066] Step 2: The signal sensing device is communicatively connected to a signal sending module, and the signal sending module is used to send the signal detected by the signal sensing device;

[0067] Step 3: A signal receiving module 300 is provided on the crossbar 5 to receive the signal sent by the signal sending module;

[0068] Step 4: A control module 200 is provided on the crossbar 5. The control module 200 is an editable controller. The control module 200 is in communication with the signal receiving module 300, judges the information of the signal receiving module 300, and issues a command;

[0069] Step 5: The control module 200 is connected to the lifting mechanism 3 and the launch head 8 for communication, and controls the working status of the lifting mechanism 3 and the launch head 8 according to the command described in step 4.

[0070] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An all-round protective device for a photoelectric sensor, comprising a mounting seat (1), characterized in that: The mounting seat (1) is provided with an axis (2), the lower end of the axis (2) is provided with a lifting mechanism (3), the outer shell of the axis (2) is provided with a sleeve (4), both sides of the sleeve (4) are connected with cross bars (5), the outer ends of the cross bars (5) on both sides are provided with storage boxes (6), the upper part of the storage boxes (6) is provided with an opening (7), a transmitting head (8) is provided in one of the storage boxes (6) so as to move up and down, and a receiving head (9) is provided in the other storage box (6) so as to move up and down, the transmitting head (8) is aligned with the receiving head (9), and the transmitting head (8) and the receiving head (9) are connected with the lifting mechanism (3). ), a connecting structure (10) is arranged between the output ends of the storage box (6), a rotating mechanism (11) is arranged on the inner wall of the storage box (6), a cleaning roller (12) is arranged on the output end of the rotating mechanism (11), a vertical driving rack (13) is arranged on the transmitting head (8) and the receiving head (9), a passive gear (14) is arranged at the rotating shaft of the rotating mechanism (11), the passive gear (14) and the driving rack (13) on the corresponding side are meshed for transmission, a movable baffle structure (15) capable of closing the opening (7) is arranged on the cross bar (5), and a driving strip groove (16) is arranged on the outer wall of the receiving head (9) and the transmitting head (8); The driving strip groove (16) comprises an oblique strip groove (161) extending from the inside to the outside and tilting inward, and the inner end of the oblique strip groove (161) is connected to a vertical strip groove (162); The movable baffle structure (15) is provided with the driving shaft (17), and the driving shaft (17) is inserted into the driving strip groove (16); A driving mechanism (18) capable of rotating the sleeve (4) is provided between the sleeve (4) and the fixed portion of the lifting mechanism (3); The lifting mechanism (3) is a telescopic motor, and the telescopic motor is arranged downward; The rotating mechanism (11) comprises a rotating shaft seat (111) arranged on the inner wall of the storage box (6), and a rotating shaft body (112) is rotatably mounted on the rotating shaft seat (111).

2. The all-round protection device for a photoelectric sensor according to claim 1, characterized in that: The connection structure (10) comprises a push rod (101) arranged at the lower end of the transmitting head (8) and the receiving head (9); a through hole (102) for the push rod (101) to move up and down is arranged on the lower surface of the storage box (6); the push rod (101) is movably inserted into the through hole (102); and a connecting plate (103) is arranged between the push rod (101) and the output end of the telescopic motor (301).

3. The all-round protection device for a photoelectric sensor according to claim 1, characterized in that: The cleaning roller (12) comprises a brush fixing cylinder (121) sleeved on the circumferential outer wall of the rotating shaft (112), and the outer wall of the brush fixing cylinder (121) is covered with brush bodies (122).

4. The all-round protection device for a photoelectric sensor according to claim 1, characterized in that: The movable baffle structure (15) comprises a baffle receiving groove (151) arranged on the surface of the opening (7), a baffle body (152) for closing or opening the opening (7) being movably arranged in the baffle receiving groove (151), and the baffle receiving groove (151) is arranged in the cross bar (5).

5. The all-round protection device for a photoelectric sensor according to claim 1, characterized in that: The width of the driving strip groove (16) is the same as the diameter length of the driving shaft body (17).

6. The all-round protection device for a photoelectric sensor according to claim 1, characterized in that: The driving mechanism (18) comprises a screw seat (181) arranged on the lower surface of the sleeve (4), a screw body (182) is rotatably mounted on the screw seat (181), a ring gear (183) is sleeved on the circumferential outer wall of the fixed part of the telescopic motor (301), and the screw body (182) and the ring gear (183) are threadedly connected.

7. The all-round protection device for a photoelectric sensor according to claim 6, characterized in that: The shaft end of the screw rod body (182) is provided with a screw hole (100).

8. A method for all-round protection of a photoelectric sensor, used in an all-round protection device for a photoelectric sensor according to any one of claims 1 to 7, characterized in that: The method includes: Step 1: Control the lifting mechanism (3) to descend, and during the descent process, drive the transmitting head (8) and the receiving head (9) on both sides to descend synchronously; Step 2: During the descent of the transmitting head (8) and the receiving head (9), the driving rack (13) and the passive gear (14) are meshed and driven to drive the passive gear (14) to rotate; Step 3: The passive gear (14) in step 2 rotates to drive the cleaning roller (12) to rotate, and the cleaning roller (12) is close to the transmitting head (8) or the receiving head (9) on the corresponding side to clean and remove dust; Step 4: During the descent of the transmitting head (8) and the receiving head (9), the driving strip groove (16) cooperates with the driving shaft (17) on the corresponding side. When the driving strip groove (16) moves to the bottom of the stroke, the driving strip groove (16) cooperates with the driving shaft (17) to completely pull out the movable baffle structure (15), close the opening (7), and complete the all-round protection of the transmitting head (8) or the receiving head (9).

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