Index plate positioning device

Abstract

The invention provides an index plate positioning device which comprises an index plate, a base, a photoelectric sensor, a transmission mechanism and a control system, the index plate is installed on the base and connected with the transmission mechanism, the transmission mechanism drives the index plate to rotate, the sensing end of the photoelectric sensor is aligned to one notch of the index plate, and the control system is connected with the photoelectric sensor. The photoelectric sensor is connected with the control system; when the index plate shields the sensing end of the photoelectric sensor, the photoelectric sensor outputs a high-level or low-level switching signal for controlling the on-off of a circuit, the photoelectric sensor feeds back the photoelectric switching signal to the control system, and the control system receives a feedback signal and judges whether the index plate rotates at a high speed or a low speed through a program. According to the invention, the accurate positioning of the valve core and the valve port of the moving bed of the all-in-one machine can be easily realized, the positioning error of equipment is reduced and eliminated, the installation is simple, the maintenance and operation cost is low, and the product quality is improved.

Description

Technical Field

[0001] The invention relates to the field of indexing plate positioning equipment, and in particular to a indexing plate positioning device. Background Art

[0002] In a moving bed, the fluid and solid phases present a cross-current flow, that is, the solid phase particles move slowly downward as a whole under the action of gravity, and the fluid phase (gas or liquid) flows in a horizontal direction, forming a cross "cross-current" flow.

[0003] At present, the valve core positioning of moving bed equipment on the market usually includes two categories:

[0004] The first type: The motor is connected to a large chain of a full circle of turntable to pull the valve core and valve port into position. There is a time accumulation error, which leads to the misalignment of the valve port for a long time, affecting the process control of the equipment;

[0005] The second category: The valve core is placed on the top and the valve port is positioned by a servo control, and the resin turntable is placed at the bottom and is rotated by a motor connected to a large chain. The top valve core servo control and the bottom resin turntable control systems must rotate at the same time. The control requirements are high and the equipment is relatively complex. The failure rate is high, there is a cumulative error in positioning the valve port, and there is little space for maintenance and repair. Summary of the invention

[0006] 1. Technical issues to be resolved

[0007] In order to solve the above problems in the prior art, the present invention provides a dividing plate positioning device.

[0008] (II) Technical solution

[0009] In order to achieve the above object, the main technical solutions adopted by the present invention include:

[0010] A dividing plate positioning device comprises a dividing plate, a base, a photoelectric sensor, a transmission mechanism and a control system;

[0011] The indexing plate is mounted on the base, and the indexing plate is connected to the transmission mechanism, and the transmission mechanism drives the indexing plate to rotate;

[0012] The sensing end of the photoelectric sensor is aligned with one of the notches of the indexing plate, and the photoelectric sensor is connected to the control system.

[0013] Preferably, the transmission mechanism includes a planetary gear reducer, a three-phase asynchronous motor, a frequency converter, a driving gear, a driven gear, a chain and a central rotating shaft;

[0014] The central rotating shaft is installed on the base through a bearing, one end of the top of the central rotating shaft is connected to the indexing plate, and one end of the bottom of the central rotating shaft is connected to the driven gear;

[0015] The driven gear is connected to the driving gear through a chain;

[0016] The control system is connected to the three-phase asynchronous motor via a frequency converter, and the control system is used to send commands to control the operation of the frequency converter and receive signals from the photoelectric sensor;

[0017] The three-phase asynchronous motor is connected to the driving gear via the planetary gear reducer.

[0018] Preferably, the transmission mechanism further comprises a tensioning assembly, wherein the tensioning assembly is connected to the chain and is used to adjust the tension of the chain.

[0019] Preferably, the tensioning assembly comprises a profile plate, a tensioning wheel, a sleeve, a spring and a tensioning rod;

[0020] One end of the tension rod is fixedly connected to the profile plate, and the other end of the tension rod is sleeved in the sleeve;

[0021] The spring is installed in the sleeve, one end of the spring is connected to the inner wall of the sleeve, and the other end of the spring is connected to the tension rod;

[0022] A wheel axle is installed in the molded plate, and the wheel axle is connected to the tensioning wheel through a deep groove ball bearing, and the tensioning wheel is connected to the chain.

[0023] Preferably, a chain fixing groove is also provided on the base.

[0024] Preferably, it comprises an accompanying mechanism, wherein the accompanying mechanism comprises a connecting ring, a connecting seat, a limiting seat, a guide rod, a sliding block and a limiting spring;

[0025] The connecting ring is fixedly mounted on the bottom of the indexing plate and is coaxially arranged with the indexing plate. Annular protrusions are arranged opposite to each other on the inner and outer walls of the connecting ring. A plurality of detection holes are arranged at equal angles on the wall of the connecting ring. The detection holes correspond to the notches on the indexing plate one by one.

[0026] The connecting seat is provided with a connecting groove corresponding to the connecting ring, and the sliding blocks are arranged opposite to each other on both sides of the connecting seat;

[0027] The slider is slidably mounted on the guide rod, the guide rod is vertically arranged in the limit seat, and the limit seat is fixedly mounted on the base;

[0028] Two sections of the limit spring are installed on the guide rod, and the slider is arranged between the two sections of the limit spring;

[0029] The emitter and the receiver of the photoelectric sensor are arranged relatively on the top of the connecting seat, and the connection line between the emitter and the receiver of the photoelectric sensor passes through one of the detection holes.

[0030] Preferably, the accompanying mechanism further includes a frame, a driving wheel, a speed increasing gear set and a generator;

[0031] The U-shaped frame is installed in the connecting seat;

[0032] The driving wheel is rotatably mounted in the U-shaped frame, and the bottom of the connecting ring is provided with a tooth groove adapted to the driving wheel and meshed with the driving wheel;

[0033] One end of the driving wheel is connected to the speed increasing gear set and the generator in sequence through a driving shaft, and the generator is used to supply power to the photoelectric sensor.

[0034] Preferably, the dividing plate is divided into 10, 20 or 30 equal parts.

[0035] Preferably, the control system includes a power distribution cabinet, a PLC module, a communication module and a touch screen. The control system is controlled by computer programming and downloaded to the CPU module of the PLC module to automatically control the frequency converter. The CPU module of the PLC module automatically sends commands to the frequency converter through programming. The frequency converter receives the DO start digital signal and 4-20mA analog signal given by the CPU module, controls the start and rotation frequency of the frequency converter, and transmits the signal to the three-phase asynchronous motor through a cable. The three-phase asynchronous motor rotates after receiving the frequency converter command. The photoelectric sensor senses the position of the dividing plate, and the CPU module receives the photoelectric sensor signal to check and determine whether the valve port positioning is accurate.

[0036] (III) Beneficial effects

[0037] The beneficial effects of the present invention are:

[0038] 1. When the indexing plate blocks the sensing end of the photoelectric sensor, the photoelectric sensor will output a high-level or low-level switch signal to control the on-off of the circuit. The photoelectric sensor will feed back the photoelectric switch signal to the control system. The control system receives the feedback signal and determines whether the indexing plate rotates at high speed or low speed through the program, and whether the positioning valve port is accurately positioned. It can easily realize the accurate positioning of the valve core and valve port of the integrated mobile bed, reducing and eliminating the positioning error of the equipment;

[0039] 2. When the indexing plate rotates, it drives the connecting ring to rotate synchronously. The vibration generated when the indexing plate rotates drives the connecting seat to vibrate synchronously with the indexing plate through the annular protrusions on both sides of the connecting ring, so that the photoelectric sensor on the connecting seat and the indexing plate move in unison, reducing the detection error of the photoelectric sensor. In addition, when the connecting ring rotates, it can synchronously drive the generator to generate electricity to provide electrical energy for the photoelectric sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a structural schematic diagram of a dividing plate positioning device;

[0041] Figure 2 for Figure 1 A magnified schematic diagram of the middle part;

[0042] Figure 3 for Figure 1 The enlarged schematic diagram of the middle B part;

[0043] Figure 4 for Figure 1 Enlarged schematic diagram of middle C part;

[0044] Figure 5 It is a structural diagram of the accompanying mechanism;

[0045] Figure 6 It is a structural schematic diagram of the tensioning component.

[0046] Description of reference numerals:

[0047] 1. Base;

[0048] 2. Indexing plate;

[0049] 3. Photoelectric sensor;

[0050] 4. Transmission mechanism;

[0051] 41. three-phase asynchronous motor; 42. planetary gear reducer; 43. driving gear; 44. chain; 45. tensioning assembly; 451. sleeve; 452. tensioning rod; 453. spring; 454. profile plate; 455. tensioning wheel; 46. driven gear; 47. central shaft;

[0052] 5. Control system;

[0053] 6. Accompanying institutions;

[0054] 61. Connecting ring; 62. Guide rod; 63. Limiting seat; 64. Driving wheel; 65. Connecting seat; 66. Generator; 67. Sliding block; 68. Limiting spring; 69. Profile frame. DETAILED DESCRIPTION

[0055] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation modes in conjunction with the accompanying drawings.

[0056] Please refer to Figures 1 to 4 , the first embodiment of the present invention:

[0057] A positioning device for a dividing plate 2, comprising a dividing plate 2, a base 1, a photoelectric sensor 3, a transmission mechanism 4 and a control system 5;

[0058] The indexing plate 2 is mounted on the base 1, and the indexing plate 2 is connected to the transmission mechanism 4, and the transmission mechanism 4 drives the indexing plate 2 to rotate;

[0059] The sensing end of the photoelectric sensor 3 is aligned with one of the notches of the indexing plate 2, and the photoelectric sensor 3 is connected to the control system 5;

[0060] The transmission mechanism 4 includes a planetary gear reducer 42, a three-phase asynchronous motor 41, a frequency converter, a driving gear 43, a driven gear 46, a chain 44 and a central shaft 47;

[0061] The central rotating shaft 47 is installed on the base 1 through a bearing, the top end of the central rotating shaft 47 is connected to the indexing plate 2, and the bottom end of the central rotating shaft 47 is connected to the driven gear 46;

[0062] The driven gear 46 is connected to the driving gear 43 via a chain 44;

[0063] The control system 5 is connected to the three-phase asynchronous motor 41 via a frequency converter, and the control system 5 is used to send commands to control the operation of the frequency converter and receive signals from the photoelectric sensor 3;

[0064] The three-phase asynchronous motor 41 is connected to the driving gear 43 through the planetary gear reducer 42;

[0065] When in use, the three-phase asynchronous motor 41 transmits the driving gear 43 through the planetary gear reducer 42, and the driving gear 43 drives the driven gear 46 through the chain 44. The driven gear 46 drives the central shaft 47 to rotate, thereby driving the dividing plate 2 to rotate. When the gap on the dividing plate 2 is located at the sensing end of the photoelectric sensor 3, the photoelectric sensor 3 is not blocked. When the rest of the dividing plate 2 blocks or blocks the sensing end of the photoelectric sensor 3, the photoelectric sensor 3 will output a high-level or low-level switch signal for controlling the on and off of the circuit. The photoelectric sensor 3 feeds back the photoelectric switch signal to the control system 5. The control system 5 receives the feedback signal and determines whether the dividing plate 2 rotates at high speed or low speed through the program, and determines whether the positioning valve port is accurately positioned. It can easily realize the accurate positioning of the valve core valve port of the integrated mobile bed, reduce and eliminate equipment positioning errors, simple installation, low maintenance and operating costs, and improve product quality.

[0066] refer to Figure 6 In this embodiment, the transmission mechanism 4 further includes a tensioning assembly 45, the tensioning assembly 45 is connected to the chain 44 and is used to adjust the tension of the chain 44, the tensioning assembly 45 includes a molded plate 454, a tensioning wheel 455, a sleeve 451, a spring 453 and a tensioning rod 452;

[0067] One end of the tension rod 452 is fixedly connected to the profile plate 454, and the other end of the tension rod 452 is sleeved in the sleeve 451;

[0068] The spring 453 is installed in the sleeve 451, one end of the spring 453 is connected to the inner wall of the sleeve 451, and the other end of the spring 453 is connected to the tension rod 452;

[0069] A wheel axle is installed in the molded plate 454, and the wheel axle is connected to the tensioning wheel 455 through a deep groove ball bearing, and the tensioning wheel 455 is connected to the chain 44. A chain 44 fixing groove is also provided on the base 1;

[0070] When in use, under the action of the spring 453 , the tensioning wheel 455 can maintain connection with the chain 44 , thereby achieving automatic adjustment of the tension of the chain 44 .

[0071] refer to Figure 5 , the second embodiment of the present invention:

[0072] On the basis of the above embodiment 1, it further includes an accompanying mechanism 6, wherein the accompanying mechanism 6 includes a connecting ring 61, a connecting seat 65, a limiting seat 63, a guide rod 62, a slider 67 and a limiting spring 68;

[0073] The connecting ring 61 is fixedly mounted on the bottom of the indexing plate 2 and is coaxially arranged with the indexing plate 2. Annular protrusions are arranged opposite to each other on the inner and outer walls of the connecting ring 61. A plurality of detection holes are arranged at equal angles on the ring wall of the connecting ring 61. The detection holes correspond to the notches on the indexing plate 2 one by one.

[0074] The connection seat 65 is provided with a connection groove corresponding to the connection ring 61, and the sliders 67 are disposed on both sides of the connection seat 65;

[0075] The slider 67 is slidably mounted on the guide rod 62, the guide rod 62 is vertically arranged in the limit seat 63, and the limit seat 63 is fixedly mounted on the base 1;

[0076] The guide rod 62 is provided with two sections of the limit spring 68, and the slider 67 is arranged between the two sections of the limit spring 68;

[0077] The emitter and the receiver of the photoelectric sensor 3 are arranged opposite to each other on the top of the connecting seat 65, and the connection line between the emitter and the receiver of the photoelectric sensor 3 passes through one of the detection holes.

[0078] The accompanying mechanism 6 further includes a frame 69, a driving wheel 64, a speed increasing gear set and a generator 66;

[0079] The U-shaped frame 69 is installed in the connecting seat 65;

[0080] The driving wheel 64 is rotatably mounted in the U-shaped frame 69, and the bottom of the connecting ring 61 is provided with a tooth groove adapted to the driving wheel 64 and meshed with the driving wheel 64;

[0081] One end of the driving wheel 64 is connected to the speed increasing gear set and the generator 66 in sequence through a driving shaft, and the generator 66 is used to supply power to the photoelectric sensor 3;

[0082] When in use, when the dividing plate 2 rotates, it drives the connecting ring 61 to rotate synchronously. The vibration generated when the dividing plate 2 rotates drives the connecting seat 65 to vibrate synchronously with the dividing plate 2 through the annular protrusions on both sides of the connecting ring 61, so that the photoelectric sensor 3 on the connecting seat 65 and the dividing plate 2 move in unison, reducing the detection error of the photoelectric sensor 3, and when the connecting ring 61 rotates, it can synchronously drive the generator 66 to generate electricity to provide electrical energy for the photoelectric sensor 3.

[0083] In this embodiment, the dividing plate 2 is divided into 10, 20 or 30 equal parts.

[0084] In this embodiment, the control system 5 includes a power distribution cabinet, a PLC module, a communication module and a touch screen. The control system 5 automatically controls the frequency converter by downloading the CPU module of the PLC module through computer programming control. The CPU module of the PLC module automatically sends commands to the frequency converter through programming. The frequency converter receives the DO start digital signal and 4-20mA analog signal given by the CPU module, controls the start and rotation frequency of the frequency converter, and transmits it to the three-phase asynchronous motor 41 through a cable. The three-phase asynchronous motor 41 receives the frequency converter command to rotate, and the photoelectric sensor 3 senses the position of the dividing plate 2. The CPU module receives the photoelectric sensor 3 sensing signal to check and determine whether the valve port positioning is accurate.

[0085] The working principle of the present invention is as follows:

[0086] The three-phase asynchronous motor 41 transmits the driving gear 43 through the planetary gear reducer 42, and the driving gear 43 drives the driven gear 46 through the chain 44. The driven gear 46 drives the central shaft 47 to rotate, thereby driving the dividing plate 2 to rotate. When the gap on the dividing plate 2 is located at the sensing end of the photoelectric sensor 3, the photoelectric sensor 3 is not blocked. When the rest of the dividing plate 2 blocks or blocks the sensing end of the photoelectric sensor 3, the photoelectric sensor 3 will output a high-level or low-level switch signal for controlling the on-off of the circuit. The photoelectric sensor 3 feeds back the photoelectric switch signal to the control system 5. The control system 5 receives the feedback signal and determines whether the dividing plate 2 rotates at a high speed or a low speed through a program, and whether the positioning valve port is accurately positioned. It can easily realize the accurate positioning of the valve core valve port of the integrated mobile bed, reduce and eliminate equipment positioning errors, and is simple to install, with low maintenance and operating costs, thereby improving product quality.

[0087] The above are only embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

[0088] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A dividing plate positioning device, characterized in that: It includes a dividing plate, a base, a photoelectric sensor, a transmission mechanism and a control system; The indexing plate is mounted on the base, and the indexing plate is connected to the transmission mechanism, and the transmission mechanism drives the indexing plate to rotate; The sensing end of the photoelectric sensor is aligned with one of the notches of the indexing plate, and the photoelectric sensor is connected to the control system.

2. A dividing plate positioning device according to claim 1, characterized in that: The transmission mechanism includes a planetary gear reducer, a three-phase asynchronous motor, a frequency converter, a driving gear, a driven gear, a chain and a central rotating shaft; The central rotating shaft is installed on the base through a bearing, one end of the top of the central rotating shaft is connected to the indexing plate, and one end of the bottom of the central rotating shaft is connected to the driven gear; The driven gear is connected to the driving gear through a chain; The control system is connected to the three-phase asynchronous motor via a frequency converter, and the control system is used to send commands to control the operation of the frequency converter and receive signals from the photoelectric sensor; The three-phase asynchronous motor is connected to the driving gear via the planetary gear reducer.

3. A dividing plate positioning device according to claim 2, characterized in that: The transmission mechanism also includes a tensioning assembly, which is connected to the chain and is used to adjust the tension of the chain.

4. A dividing plate positioning device according to claim 3, characterized in that: The tensioning assembly includes a profile plate, a tensioning wheel, a sleeve, a spring and a tensioning rod; One end of the tension rod is fixedly connected to the profile plate, and the other end of the tension rod is sleeved in the sleeve; The spring is installed in the sleeve, one end of the spring is connected to the inner wall of the sleeve, and the other end of the spring is connected to the tension rod; A wheel axle is installed in the molded plate, and the wheel axle is connected to the tensioning wheel through a deep groove ball bearing, and the tensioning wheel is connected to the chain.

5. The indexing plate positioning device according to claim 2, characterized in that: The base is also provided with a chain fixing groove.

6. The indexing plate positioning device according to claim 1, characterized in that: It includes an accompanying mechanism, which includes a connecting ring, a connecting seat, a limiting seat, a guide rod, a sliding block and a limiting spring; The connecting ring is fixedly mounted on the bottom of the indexing plate and is coaxially arranged with the indexing plate. Annular protrusions are arranged opposite to each other on the inner and outer walls of the connecting ring. A plurality of detection holes are arranged at equal angles on the wall of the connecting ring. The detection holes correspond to the notches on the indexing plate one by one. The connecting seat is provided with a connecting groove corresponding to the connecting ring, and the sliding blocks are arranged on two sides of the connecting seat opposite to each other; The slider is slidably mounted on the guide rod, the guide rod is vertically arranged in the limit seat, and the limit seat is fixedly mounted on the base; Two sections of the limit spring are installed on the guide rod, and the slider is arranged between the two sections of the limit spring; The emitter and the receiver of the photoelectric sensor are arranged relatively on the top of the connecting seat, and the connection line between the emitter and the receiver of the photoelectric sensor passes through one of the detection holes.

7. A dividing plate positioning device according to claim 6, characterized in that: The accompanying mechanism also includes a frame, a driving wheel, a speed increasing gear set and a generator; The U-shaped frame is installed in the connecting seat; The driving wheel is rotatably mounted in the U-shaped frame, and the bottom of the connecting ring is provided with a tooth groove adapted to the driving wheel and meshed with the driving wheel; One end of the driving wheel is connected to the speed increasing gear set and the generator in sequence through a driving shaft, and the generator is used to supply power to the photoelectric sensor.

8. The indexing plate positioning device according to claim 1, characterized in that: The dividing plate is divided into 10, 20 or 30 equal parts.

9. The indexing plate positioning device according to claim 2, characterized in that: The control system includes a power distribution cabinet, a PLC module, a communication module and a touch screen. The control system is controlled by computer programming and downloaded to the CPU module of the PLC module to automatically control the frequency converter. The CPU module of the PLC module automatically sends commands to the frequency converter through programming. The frequency converter receives the DO startup digital signal and 4-20mA analog signal given by the CPU module, controls the start and rotation frequency of the frequency converter, and transmits the signal to the three-phase asynchronous motor through a cable. The three-phase asynchronous motor rotates after receiving the frequency converter command. The photoelectric sensor senses the position of the indexing plate, and the CPU module receives the photoelectric sensor signal to check and determine whether the valve port positioning is accurate.

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