Electric conveying line with conveying belt quality self-checking function

Abstract

The electric conveying line with the conveying belt quality self-checking function comprises a belt type electric conveying line body, a power supply module A, an automatic paint spraying tank, a rotating shaft, a detection mechanism, a time control circuit and a detection circuit; the rotating shaft is rotatably installed at the lower end of a rack; the detection mechanism comprises an electric linear slide, an electric push rod and a force measuring sub-mechanism; the electric linear slide is installed at the side end of the rotating shaft; the electric push rod and the lower end of the automatic paint spraying tank are installed on the sliding block; the lower end of the force measuring sub-mechanism is installed on the upper end of the electric push rod; the power supply module, the time control circuit and the detection circuit are installed in the electric control box of the electric conveying line body and are electrically connected. When the conveying belt has quality problems such as cracking, opening and surface tearing, the alarm can sound to prompt the staff to maintain or replace in the first time, and the quality problem points can be marked by the paint spraying mode, which provides convenience for the subsequent staff maintenance and effectively prevents the inconvenience brought to the staff by the existing manual inspection.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric conveying line equipment, in particular to an electric conveying line with a conveying belt quality self-checking function. BACKGROUND

[0002] The belt type electric conveying line is a conveying equipment widely used in the fields of logistics and production, etc., which mainly conveys materials from one station to the next station through the continuously moving conveying belt. After the conveying belt of the belt type electric conveying line is used for a period of time, or under the damage of overloading operation and conveyed materials, there is a probability of cracking and opening, surface tearing, etc. If the above problems are not replaced or maintained in time (such as cutting off the conveying belt with quality problems and connecting a new conveying belt), the conveying work cannot be carried out after the conveying belt is completely or partially broken in actual production, which will adversely affect normal production.

[0003] In the prior art, the quality of the conveying belt is usually visually inspected by technical personnel after shutdown (only the surface needs to be checked to meet the needs), but due to the long length of the conveying belt and the influence of many factors such as the skills and work responsibility of the relevant personnel, it cannot be guaranteed that the poor quality points can be checked by human inspection, and more importantly, the conveying belt is in a ring shape connected at the head and tail, and the lower end of the conveying frame is low in height and limited in field of view, which will adversely affect the relevant inspection work. In summary, it is very necessary to provide an electric conveying line that can automatically detect the quality of the conveying belt without shutdown. SUMMARY

[0004] The present application provides a belt type electric conveying line body, which can automatically detect the quality of the upper end of the conveying belt every certain time in application, and can prompt the staff to maintain or replace in the first time when the conveying belt has quality problems such as cracking and opening, surface tearing, etc., and can mark the quality problem points by spraying paint, which provides convenience for subsequent staff maintenance, effectively prevents the inconvenience brought to the staff by the existing human inspection of the quality of the conveying belt of the belt type electric conveying line, and cannot guarantee the quality of the inspection.

[0005] The technical solution adopted by the present application to solve the technical problems is:

[0006] An electric conveyor line with self-inspection function for conveyor belt quality includes a belt-type electric conveyor line body, a power supply module, and an automatic paint sprayer. Its distinguishing feature is that it also includes a detection mechanism, a timing circuit, and a detection circuit. The electric conveyor line body is equipped with a rotating shaft, which is rotatably mounted on the lower end of the frame of the electric conveyor line body. The detection mechanism includes an electric linear slide, an electric push rod, and a force-measuring sub-mechanism. The electric linear slide is mounted on the side of the rotating shaft, the lower end of the electric push rod is mounted on one side of the sliding block of the electric linear slide, the lower end of the automatic paint sprayer is mounted on the other side of the sliding block, and the lower end of the force-measuring sub-mechanism is mounted on the upper end of the electric push rod. The power supply module, timing circuit, and detection circuit are installed in an electrical control box. The power input terminal of the detection circuit is connected to the power output terminal of the timing circuit. The multi-channel control terminal of the timing circuit is electrically connected to the power input terminals of the electric linear slide, the electric push rod, and the automatic paint sprayer, respectively. The signal input terminal of the detection circuit is electrically connected to the signal output terminal of the force-measuring sub-mechanism.

[0007] Preferably, the automatic paint spraying tank includes a tank body, a solenoid valve, and a nozzle. A paint inlet pipe is installed inside the tank body. The liquid inlet end of the solenoid valve and the upper end of the paint inlet pipe are installed together. The lower end of the nozzle and the liquid outlet end of the solenoid valve are installed together. The spray hole of the nozzle is located at the top. Paint and highly compressed air are added to the tank body.

[0008] Preferably, the force measuring sub-mechanism includes a guide tube, a spring, a guide rod, and a pressure resistor. The lower end of the guide tube is installed on the upper end of the electric push rod, the lower end of the pressure resistor is installed inside the lower end of the guide tube, and the spring and the guide rod are respectively movably sleeved inside the guide tube.

[0009] Preferably, the lower end of the spring contacts the force-bearing surface of the pressure resistor, the lower end of the guide rod contacts the upper end of the spring, a pulley is rotatably mounted on the upper end of the guide rod, the nozzle and the lower end of the conveyor belt are spaced apart, and when the movable column of the electric push rod moves to the stop point, the upper end of the pulley and the outer side of the lower end of the conveyor belt slide in contact.

[0010] Preferably, the timing circuit includes five electrically connected timing switches, with the power output terminal of the first timing switch and the power input terminals of the other four timing switches electrically connected.

[0011] Preferably, the detection circuit includes an adjustable resistor, a resistor, an NPN transistor, and a relay that are electrically connected. The positive power input terminal of the relay is connected to the control power input terminal. One end of the adjustable resistor is connected to one end of the resistor, and the other end of the resistor is connected to the base of the NPN transistor. The collector of the NPN transistor is connected to the negative power input terminal of the relay. The emitter of the NPN transistor is connected to the negative power input terminal of the buzzer. The normally open contact of the relay is connected to the positive power input terminal of the buzzer.

[0012] Compared with the prior art, the present application has the beneficial effects that the time control circuit of the present application can automatically detect the quality of the upper end of the conveying belt every certain time interval, and when the conveying belt has quality problems such as cracking, opening, surface tearing, etc., the problems can be first-time prompted to the staff for maintenance or replacement through the sound prompt of the sounder, and the quality problem points can be marked through the paint spraying method, which provides convenience for subsequent staff maintenance, effectively prevents the inconvenience brought to the staff by the existing manual inspection of the conveying belt quality of the belt type electric conveying line, and ensures the inspection quality. BRIEF DESCRIPTION OF DRAWINGS

[0013] The present application will be further described below in combination with the drawings and examples.

[0014] Figure 1 、 2 is a schematic diagram of the overall structure and partial enlarged structure of the present application.

[0015] Figure 3 is a circuit diagram of the present application. DETAILED DESCRIPTION

[0016] Figure 1 、 2 , 3, the electric conveying line with the conveying belt quality self-checking function, comprising a belt type electric conveying line body 1, a power supply module A1, an automatic paint spraying tank, a detection mechanism, a time control circuit 2 and a detection circuit 3; the electric conveying line body 1 is equipped with two rotating shafts 101, the shaft rods at the middle of the left and right sides of the front and rear of the two rotating shafts 101 are tightly sleeved in the inner rings of the two bearing seats 102, and the four bearing seats 102 are installed on the lower middle part of the frame 103 of the electric conveying line body by bolts, and the upper ends of the two rotating shafts 101 are tightly attached to the lower end of the conveying belt 104 of the electric conveying line body; the detection mechanism comprises an electric linear slide M, an electric push rod M1 and a force measuring sub-mechanism, the electric linear slide M is installed on the left and right sides of the lower middle part of the frame 103 between the two rotating shafts by bolts, the lower end of the cylinder of the electric push rod M1 is installed on the front end of the sliding block of the electric linear slide M by a bolt, a support seat 4 is welded on the rear end of the sliding block, the lower end of the automatic paint spraying tank is installed on the support seat 4 by a bolt, and the lower end of the force measuring sub-mechanism is installed on the movable column of the electric push rod M1; the power supply module A1, the time control circuit 2 and the detection circuit 3 are installed in the electric control box 5 of the electric conveying line body.

[0017] Figure 1 、 2The automatic paint spraying tank is shown in Fig. 3, which comprises a tank body 61, an electromagnetic valve DC and a nozzle 62. A paint inlet pipe 63 is vertically installed in the middle of the tank body 62. The lower end of the paint inlet pipe 63 is spaced apart from the lower end of the tank body by a distance of 2 mm, and the upper end of the paint inlet pipe 63 is sealed outside the upper part of the tank body 61. The liquid inlet end of the electromagnetic valve DC is sealed and threadedly connected with the upper end of the paint inlet pipe 63. The pipe at the lower end of the nozzle 62 is threadedly connected with the liquid outlet end of the electromagnetic valve DC. The spray hole of the nozzle 62 is located at the upper part of the nozzle 62. Paint and high pressure compressed air are added into the tank body 61. The lower end of the tank body 61 of the automatic paint spraying tank is bolted to the support base 4. The force measuring sub-mechanism comprises a closed guide pipe 71 at the upper and lower ends, a spring 72, a guide rod 73 and a pressure resistor RT. The lower end of the rectangular guide pipe 71 is welded to the movable column of the electric push rod Ml. A guide hole is formed in the middle of the upper end of the guide pipe 71. The lower end of the pressure resistor RT is insulated and installed in the lower end of the guide pipe 71, and the force receiving surface thereof faces upward. The lower end of the guide rod 73 is welded to a rectangular limiting plate 74, which has an outer diameter slightly smaller than the inner diameter of the guide pipe. The lower end and the upper end of the guide rod 73 are movably sleeved in the lower end and the upper end of the guide pipe 71, respectively. The upper end of the guide rod 73 is located in the guide hole. The wire connected with the pressure resistor RT is led out through the hole at the lower right end of the guide pipe 71, and the hole is sealed with sealing glue. The outer diameter of the guide rod 73 is smaller than the inner diameter of the guide hole. The outer diameter of the limiting plate 74 is 0.2 mm smaller than the inner diameter of the guide pipe. The lower end of the spring 72 and the force receiving surface of the pressure resistor RT are in contact. The lower end of the limiting plate 74 and the upper end of the spring 72 are in contact. A small pulley 75 is rotatably installed at the upper end of the guide rod 73. The nozzle 62 is spaced apart from the lower end of the conveying belt 104 by a distance. When the movable column of the electric push rod Ml moves to the stop point, the upper end of the pulley 75 is in rolling contact with the outer side of the lower end of the conveying belt 104. When the movable column of the electric push rod Ml moves to the stop point, the upper end of the pulley 75 is spaced apart from the outer side of the lower end of the conveying belt 104 by a distance.

[0018] Figure 1 、 2As shown in FIG. 3, the power input terminals 1 and 2 of the power supply module A1 are connected to two poles of an AC 220V power supply through wires, and the power output terminals 3 and 4 of the power supply module A1 are connected to the power input terminals 1 and 2 of the time control switch A2 of the time control circuit through wires. The other end of the adjustable resistor RP of the power input terminal of the detection circuit, the emitter of the NPN triode Q1, and the power output terminals 3 and 4 of the time control switch A2 are connected through wires. The power output terminals of the time control switches A3 and A4 are connected to the positive and negative power input terminals of the electric linear slide M through wires, and the power output terminals of the time control switches A5 and A6 are connected to the positive and negative power input terminals of the electric push rod M1 through wires. The normally open contact terminals of the relay K1, the emitter of the NPN triode Q1, and the power input terminals of the electromagnetic valve DC of the automatic paint spraying tank are connected through wires, and the one end of the adjustable resistor RP of the signal input terminal of the detection circuit, the emitter of the NPN triode Q1, and the two connection terminals of the pressure resistor RT are connected through wires.

[0019] Figure 1 、 2, 3, the other use process and working principle of the belt type electric conveying line body 1 and the existing belt type electric conveying line are completely consistent, the material is conveyed from the previous station to the next station through the continuously moving conveying belt 104. After the 220V power supply enters the power input end of the power supply module A1, the power output end will output 12V DC power supply for the time control circuit. After the time control circuit of the application is powered on, the time control switch A2 will output 10 minutes (the time can be adjusted according to the needs, and the time can also be indefinite, such as 3 minutes for the first time, 2 minutes for the second time, 4 minutes for the third time, and so on) power to the detection circuit and the power input end of the time control switches A3, A4, A5 and A6 every 5 hours. Therefore, the detection circuit and the time control switches A3, A4, A5 and A6 will be powered on for 10 minutes every few hours (the time can be adjusted according to the needs), and this time period is used for detecting the quality of the conveying belt. After the time control switches A3 and A4 are powered on, they will output 7 seconds of power to the positive and negative poles of the electric linear slide M every 2 seconds. After the positive and negative poles of the electric linear slide M are powered on, the sliding block drives the force measuring mechanism and moves from left to right to the stop point. After the negative and positive poles of the electric linear slide M are powered on, the sliding block drives the force measuring mechanism and moves from right to left to the stop point. In this way, the force measuring mechanism will continuously move back and forth in the 10-minute time period to detect whether the conveying belt 104 has quality problems. After the time control switch A5 is powered on, it will output 3 seconds of power to the positive and negative poles of the electric push rod M1. The movable column of the electric push rod M1 drives the force measuring mechanism to move from bottom to top to the stop point, and the upper end of the pulley 75 just contacts the lower end of the conveying belt 104, which is ready for quality detection. After the time control switch A6 is powered on, it will output 3 seconds of power to the negative and positive poles of the electric push rod M1 every 9 minutes and 57 seconds. The movable column of the electric push rod M1 drives the force measuring mechanism to move from top to bottom to the stop point, and returns to the initial state for the next detection (the upper end of the pulley 75 and the lower end of the conveying belt 104 are separated).

[0020] Figure 1 、 2As shown in Figure 3, when the pulley 75 (with a diameter of only 3.5 mm) is driven to move left or right by the sliding block of the electric linear slide M, its upper end will rotate along the lower end of the conveyor belt. When there are no cracks, holes, or surface tears in the area of ​​the lower end of the conveyor belt 104 that the upper end of the pulley 75 passes laterally (after the upper side rotates to the lower part, it is located on the lower side of the lower end), the distance between the lower end of the conveyor belt 104 and the upper outer side of the guide tube 71 is relatively small. In this way, the guide rod 73 travels a relatively large distance down the guide tube through the limiting plate 74, compressing the spring 72 relatively tightly. The force acting on the pressure resistor RT is relatively large, resulting in a relatively small resistance value for RT and a small voltage drop between it and the adjustable resistor RP. The power output from power supply module A1 is divided by the pressure resistor RT and the adjustable resistor RP. Resistor R1 limits the current and reduces the voltage to the base of NPN transistor Q1, which is lower than its starting voltage. NPN transistor Q1 does not conduct, and relay K1 cannot be energized. Its control power input terminal and normally open contact terminal are open, so the solenoid valve DC and the buzzer B will not be energized, indicating that there is no quality problem at the conveyor belt detection point. When cracks, holes, or surface tears occur in the area of ​​the lower end of the conveyor belt 104 that the upper end of the pulley 75 crosses laterally, the distance between the upper end of the pulley contacting the lower side of the lower end of the conveyor belt 104 and the upper outer side of the guide tube 71 is relatively large. Therefore, under the upward force of the spring 72, the guide rod 73 moves upward along the guide tube through the limiting plate 74, and the spring 72 is compressed relatively loosely, resulting in a relatively small force acting on the pressure resistor RT. Consequently, the resistance value of the pressure resistor RT is relatively large, and the voltage drop between it and the adjustable resistor RP is large, causing the power supply module A1 to output... The power supply is divided by the pressure resistor RT and the adjustable resistor RP. Resistor R1 limits the current and reduces the voltage, which is higher than the base voltage of NPN transistor Q1. NPN transistor Q1 conducts, and its collector outputs a low level, which enters the negative power input terminal of relay K1. Relay K1 is energized and its control power input terminal and normally open contact terminal close. Solenoid valve DC and alarm B are energized. Alarm B's audible sound indicates a quality problem at the conveyor belt inspection point. Upon hearing the sound, staff can promptly shut off the main power supply to the belt-driven electric conveyor for maintenance. When solenoid valve DC is energized, its valve core opens, allowing liquid paint in tank 61 to enter through the lower end of the paint inlet pipe under pressure. The paint is then sprayed from the nozzle 62 near the quality problem area on the conveyor belt, providing an indication for subsequent maintenance personnel to quickly locate the problem and speeding up repairs. After the quality problem point and the upper end of the pulley are separated, the resistance value of the pressure resistor RT becomes relatively small again, so the relay K1 will lose power again, and the entire mechanism and circuit will return to the initial state, ready for the next use (the solenoid valve DC will also lose power and close). Figure 3In the embodiment, resistance R1 is 8K; buzzer B is FM-12V buzzer; adjustable resistance RP is 200K (in this embodiment, RP is adjusted to 1.23K, when the resistance of adjustable resistance RP is adjusted to be large, the voltage signal output by pressure resistance RT is relatively large, and then the NPN triode Q1 is turned on, and the mass problem detection threshold of the upper end of the pulley to detect the lower end of the conveying belt is small; when the resistance of adjustable resistance RP is adjusted to be small, the voltage signal output by pressure resistance RT is relatively small, and then the NPN triode Q1 is turned on, and the mass problem detection threshold of the upper end of the pulley to detect the lower end of the conveying belt is large); the type of NPN triode Q1 is 8050; relay K1 is a DC12V relay; power supply module A1 is an AC220V to DC12V power supply module product; pressure resistance RT is a BX120-3AA resistance strain gauge; time control switches A2, A3, A4, A5 and A6 are cycle timer switch products produced by D&C / Shangde, a switch manufacturing company, Delexi Switch Co., Ltd.

[0021] In the description of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "linking" should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integral connection; can be mechanical connection, electrical connection, or direct connection, or indirect connection through an intermediate medium, or internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0022] For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and the present application can be realized in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0023] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be properly combined to form other embodiments that those skilled in the art can understand.

Claims

1. An electric conveying line with a belt quality self-checking function, comprising a belt type electric conveying line body, a power supply module, and an automatic paint spraying tank, characterized in that, The automatic paint spraying tank is characterized in that: the automatic paint spraying tank comprises a power supply module, a time control circuit, a detection circuit, an electrically-driven conveying line body, a detection mechanism, a time control circuit and a detection circuit; the electrically-driven conveying line body is provided with a rotating shaft which is rotatably installed at the lower end of the frame of the electrically-driven conveying line body; the detection mechanism comprises an electrically-driven linear slide, an electrically-driven push rod and a force measuring sub-mechanism; the electrically-driven linear slide is installed at the side end of the rotating shaft; the lower end of the electrically-driven push rod is installed on one side of the sliding block of the electrically-driven linear slide; the lower end of the automatic paint spraying tank is installed on the other side of the sliding block; the lower end of the force measuring sub-mechanism is installed on the upper end of the electrically-driven push rod; the power supply module, the time control circuit and the detection circuit are installed in the electric control box; the power input end of the detection circuit and the power output end of the time control circuit are connected; the power input ends of the electrically-driven linear slide, the electrically-driven push rod and the automatic paint spraying tank are respectively electrically connected with the multi-way control end of the time control circuit; the signal input end of the detection circuit is electrically connected with the signal output end of the force measuring structure; the automatic paint spraying tank comprises a tank body, an electromagnetic valve and a nozzle; the inside of the tank body is provided with a paint inlet pipe; the liquid inlet end of the electromagnetic valve and the upper end of the paint inlet pipe are installed together; the lower end of the nozzle and the liquid outlet end of the electromagnetic valve are installed together; the spray hole of the nozzle is located at the upper part; paint and high-pressure compressed air are added into the tank body; the force measuring sub-mechanism comprises a guide pipe, a spring, a guide rod and a pressure resistor; the lower end of the guide pipe is installed on the upper end of the electrically-driven push rod; the lower end of the pressure resistor is installed in the lower end of the guide pipe; the spring and the guide rod are movably sleeved in the guide pipe; the lower end of the spring is in contact with the force receiving surface of the pressure resistor; the lower end of the guide rod is in contact with the upper end of the spring; the upper end of the guide rod is rotatably installed with a pulley; the nozzle and the lower end of the conveying belt are spaced apart; when the movable column of the electrically-driven push rod reaches the stop point, the upper end of the pulley is in sliding contact with the outer side of the lower end of the conveying belt; the detection circuit comprises an adjustable resistor, a resistor, an NPN triode and a relay which are electrically connected; the positive power input end of the relay and the control power input end are connected; one end of the adjustable resistor and one end of the resistor are connected; the other end of the resistor and the base of the NPN triode are connected; the collector of the NPN triode and the negative power input end of the relay are connected; the emitter of the NPN triode and the negative power input end of the sounder are connected; the normally open contact end of the relay and the positive power input end of the sounder are connected; when the upper end of the pulley passes through the area of the lower end of the conveying belt where cracking and opening holes and surface tearing occur, the upper end of the pulley is in contact with the upper concave of the lower side of the conveying belt and the distance between the upper outer side of the guide pipe is large; under the upward force of the spring, the guide rod moves upward along the guide pipe through the limiting plate, the spring is compressed, the force acting on the force receiving surface of the pressure resistor is small, the resistance value of the pressure resistor is large, the voltage division between the adjustable resistor and the resistor is large; after the electromagnetic valve is powered on, the valve core is opened; the liquid paint in the tank body enters through the lower end of the paint inlet pipe under the pressure and is sprayed out from the spray hole of the upper end of the nozzle near the quality problem of the conveying belt.

2. The motorized conveyor line with a conveyor belt quality self-checking function according to claim 1, characterized in that, The time control circuit comprises five-way time control switches which are electrically connected; the power output end of the first time control switch and the power input ends of the other four time control switches are electrically connected.

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