Cutting system control circuit of garbage can metal strip

Abstract

The utility model discloses a garbage can metal strip cutting system control circuit comprising the following structures: a three-phase power supply comprising three-phase power lines L1, L2 and L3 and a zero line N; the three-phase power supply is connected with a circuit breaker QF; the circuit breaker QF is connected with a main circuit and a control circuit; wherein the main circuit comprises a cutter motor M2 and a conveyor belt motor M1 which are respectively connected with contactors KM1, KM2 and KM3 and thermal relays FR1 and FR2; the control circuit comprises three functional loops, namely a conveyor belt moving loop, a cutter pressing loop and a cutter moving loop; and the three functional loops are executed in sequence to complete the cutting process of the metal strip. The control circuit has the advantages that the control circuit can sequentially control the working procedures of conveying belt movement, cutter downward pressing, cutter upward movement and the like according to a preset program, automatic control over the garbage can metal strip cutting process is achieved, and production efficiency and product quality are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to metal processing equipment control field especially, it is a kind of cutting system control circuit of garbage can metal strip, for controlling the automatic cutting process of garbage can metal strip. BACKGROUND

[0002] Garbage can plays an important role in modern urban environmental health, and metal garbage can is widely used in public places due to its durability and fireproof performance. In the structure of metal garbage can, metal strip is an important reinforcing component, which is used to enhance the structural stability and service life of garbage can. These metal strips need to be cut from large metal plates and then fixed on the garbage can for reinforcement. In the traditional metal strip cutting process, the following problems mainly exist:

[0003] First, when manually operating the cutting equipment, the operator has high safety risk and is prone to accidents; second, manual control of the cutting process cannot guarantee the consistency of the cutting size, resulting in uneven reinforcement effect; third, manual operation is inefficient and cannot meet the mass production demand; fourth, the existing semi-automatic cutting equipment lacks coordination, and the transmission and cutting actions are not smooth, affecting production efficiency; fifth, the equipment protection mechanism is imperfect, and the equipment is prone to damage due to improper operation, increasing maintenance cost and downtime.

[0004] With the increase in demand for garbage cans and the improvement in automation level, it is of great practical significance to develop a cutting system control circuit that can achieve accurate cutting of metal strips, safe and reliable, and efficient production. UTILITY MODEL CONTENT

[0005] The utility model aims to provide a kind of cutting system control circuit of garbage can metal strip, this control circuit can be according to preset program sequence control conveyor belt movement, cutter down and cutter up and other processes, realize the automation control of garbage can metal strip cutting process, improve production efficiency and product quality.

[0006] The above technical purpose of the utility model is realized by the following technical scheme:

[0007] A kind of cutting system control circuit of garbage can metal strip, comprising: three-phase power supply, the three-phase power supply includes three-phase power supply line L1, L2, L3 and zero line N;The three-phase power supply is connected with circuit breaker QF;The circuit breaker QF is connected with main circuit and control circuit;Wherein, the main circuit includes cutter motor M2 and conveyor belt motor M1, respectively connected with contactor KM1, KM2, KM3 and thermal relay FR1, FR2;The control circuit includes three functional circuits: conveyor belt movement circuit, cutter down circuit and cutter up circuit;The three functional circuits are sequentially executed in order, complete the cutting process of metal strip.

[0008] The utility model further sets up: control circuit still includes start button SB1 and time relay KT1, KT2, KT2, be used for controlling the automatic sequence execution of cutting process.

[0009] The utility model further sets up: the conveyer belt moves loop and includes relay KM1 and time relay KT1;Relay KM1 is used for controlling contactor KM1 closing, starts conveyer belt motor M1, drives the conveyer belt movement, transports the metal sheet to the cutter below;Time relay KT1 is used for controlling the time of conveyer belt movement, makes the metal sheet accurate positioning.

[0010] The utility model further sets up: time relay KT1 is equipped with contact 3-4 and contact 5-6, wherein contact 3-4 is used to disconnect after the conveyer belt movement is completed, makes conveyer belt motor M1 stop;Contact 5-6 is used to close after the conveyer belt movement is completed, triggers the cutter down pressure loop.

[0011] The utility model further sets up: the cutter down pressure loop includes relay KM2 and time relay KT2;Relay KM2 is used for controlling contactor KM2 closing, starts cutter motor M2 positive rotation, drives the cutter down pressure cutting metal strip;Time relay KT2 is used for controlling the time of cutter down pressure, makes cutting complete.

[0012] The utility model further sets up: time relay KT2 is equipped with contact 9-10 and contact 11-12, wherein contact 9-10 is used to disconnect after the cutter down pressure is completed, makes cutter motor M2 stop;Contact 11-12 is used to close after the cutter down pressure is completed, triggers the cutter up movement loop.

[0013] The utility model further sets up: the cutter up movement loop includes relay KM3 and time relay KT3;Relay KM3 is used for controlling contactor KM3 closing, starts cutter motor M2 reverse, drives the cutter up movement reset;Time relay KT3 is used for controlling the time of cutter up movement, makes the cutter complete reset.

[0014] The utility model further sets up: time relay KT3 is equipped with contact 15-16 and contact 1-2, wherein contact 15-16 is used to disconnect after the cutter up movement is completed, makes cutter motor M2 stop;Contact 1-2 is used to disconnect after the cutter up movement is completed, makes time relay KT1 lose electricity, and the whole circuit resets, can trigger the conveyer belt movement loop of next round.

[0015] The utility model further sets up: the thermal relay FR1, FR2 is arranged in the power supply circuit of conveyer motor M1 and cutter motor M2 respectively, is used for cutting off power when motor overload, prevents motor and cutting mechanism damage.

[0016] The utility model further sets up: the cutter motor M2 is controlled positive rotation through contactor KM2, is controlled reverse rotation through contactor KM3, realizes the down pressure cutting of cutter and the up move reset action.

[0017] In conclusion, the utility model has the following beneficial effects:

[0018] The control circuit of the utility model realizes the full automation process control of conveyer moving, cutter down pressure and cutter up move through the sequential control of time relay KT1, KT2, KT3, and operating personnel only need to press the start button SB1, can complete the whole cutting process, greatly improves production efficiency, reduces manual intervention, reduces the human error rate.

[0019] Through the accurate time setting of time relay KT1, KT2, KT3, the reasonable connection between each process is realized, the problems such as metal strip cutting failure, cutter damage or conveyer abnormality caused by improper timing are avoided, and the product quality and equipment life are improved.

[0020] The thermal relay FR1, FR2 in the control circuit carries out overload protection to conveyer motor M1 and cutter motor M2, when the current is abnormal due to excessive load or foreign matter blockage, the thermal relay automatically disconnects the circuit, and the motor and mechanical parts are protected from damage, and the circuit breaker QF provides short-circuit protection function for the whole system.

[0021] The system controls the start and stop and forward and reverse rotation of conveyer motor and cutter motor through contactor KM1, KM2, KM3, realizes continuous automatic production, can work continuously after setting once, greatly improves the cutting efficiency of metal strip, and is especially suitable for the production needs of large quantities of garbage can reinforcing parts.

[0022] Through the accurate control of conveyer moving time and cutter action time, the size of metal strip is consistent each time, the material waste and reinforcement effect uneven caused by size error are reduced, and the quality and stability of garbage can finished product are improved.

[0023] The time relay KT1, KT2, KT3 in the control circuit can flexibly adjust the time parameters of each stage according to the cutting needs of metal strips of different specifications, adapt to the reinforcement needs of garbage cans of different models, and enhance the adaptability of the system. DRAWINGS

[0024] Figure 1The utility model discloses a garbage can metal strip cutting system control circuit's circuit principle drawing. DETAILED DESCRIPTION

[0025] In the description of the utility model, it needs to understand that the orientation or positional relation indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like are the orientation or positional relation based on the orientation or positional relation shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model indicated or implied by the device or element with a particular orientation, structure and operation, and therefore cannot be understood as limiting the utility model.

[0026] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more features.

[0027] In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise explicitly specified. In the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0028] The utility model will be further described in detail below in combination with the drawings.

[0029] As Figure 1 shown, the utility model provides a kind of garbage can metal strip cutting system control circuit, and this control circuit mainly includes three parts: power input part, main circuit and control circuit.

[0030] Power input part includes three-phase power line L1, L2, L3 and zero line N, is connected to system by circuit breaker QF, provides power support for entire system. Circuit breaker QF plays the role of total switch and short-circuit protection, makes that system power safety.

[0031] The main circuit mainly comprises a conveying belt motor M1 and a cutter motor M2. The conveying belt motor M1 is used to drive the conveying belt to move, so as to convey the metal sheet to be cut to a working position directly below the cutter. The cutter motor M2 is reversely rotated according to the control of contactors KM2 and KM3, and is used to drive the cutter to move downward for cutting and to move upward for resetting respectively. The main circuit further comprises thermal relays FR1 and FR2 which are connected in series with the motors M1 and M2 respectively, and are used to monitor the operating current of the motors. When the motors are overloaded, the circuit is automatically disconnected to protect the motors from being damaged.

[0032] The control circuit comprises three main functional circuits, i.e. a conveying belt moving circuit, a cutter downward moving circuit and a cutter upward moving circuit.

[0033] The conveying belt moving circuit comprises a start button SB1, a relay KM1 and a time relay KT1. After the SB1 is pressed, the relay KM1 is powered on, the contactor KM1 in the main circuit is closed, the conveying belt motor M1 is started, the conveying belt is driven to move, and the metal sheet is conveyed to below the cutter. At the same time, the time relay KT1 starts timing, and is used to control the time of the conveying belt moving, so that the metal sheet is accurately positioned. The KT1 is provided with contacts 3-4. When the timing is finished, the contacts are disconnected, the conveying belt motor M1 is stopped, and the cutter downward moving circuit is triggered.

[0034] The cutter downward moving circuit comprises contacts 5-6 of the time relay KT1, a relay KM2 and a time relay KT2. When the KT1 timing is finished, the contacts 5-6 are closed, the relay KM2 is powered on, the contactor KM2 in the main circuit is closed, the cutter motor M2 is started in forward rotation, the cutter is driven to move downward, and the metal sheet is cut. At the same time, the time relay KT2 starts timing, and is used to control the time of the cutter moving downward, so that the cutting is finished. The KT2 is provided with contacts 9-10. When the timing is finished, the contacts 9-10 are disconnected, the cutter motor M2 is stopped, and the cutter upward moving circuit is triggered.

[0035] The cutter upward moving circuit comprises contacts 11-12 of the time relay KT2, a relay KM3 and a time relay KT3. When the time relay KT2 timing is finished, the contacts 11-12 are closed, the relay KM3 is powered on, the contactor KM3 in the main circuit is closed, the cutter motor M2 is started in reverse rotation, the cutter is driven to move upward, and the cutter is reset. At the same time, the time relay KT3 starts timing, and is used to control the time of the cutter moving upward, so that the cutter is completely reset. The KT3 is provided with contacts 15-16 and contacts 1-2. When the timing is finished, the contacts 15-16 are disconnected, the cutter motor M2 is stopped, the contacts 1-2 are disconnected, the time relay KT1 is powered off, and the overall circuit is reset, so that the conveying belt moving circuit of the next round is triggered, and an automatic and cyclic cutting process is formed.

[0036] Working principle:

[0037] System start: connect three-phase power supply, close the circuit breaker QF, prepare to start the cutting system.

[0038] Conveyor moving stage: press the start button SB1, the relay KM1 is powered, the contactor KM1 is controlled to close, the conveyor motor M1 is started, and the conveyor belt is driven to move, conveying the metal sheet to be cut to the working position below the cutter. At the same time, the time relay KT1 starts timing (which can be set to 5 seconds), controlling the time and distance of the conveyor belt movement to accurately position the metal sheet. When the KT1 timing ends, the contacts 3-4 are disconnected, and the conveyor motor M1 stops, at which time the metal sheet has been accurately positioned below the cutter.

[0039] Cutter pressing stage: when the time relay KT1 timing ends, its contacts 5-6 are closed, the relay KM2 is powered, the contactor KM2 is controlled to close, the cutter motor M2 is forward rotated, driving the cutter to move downward to cut the metal sheet below the cutter. At the same time, the time relay KT2 starts timing (which can be set to 3 seconds), controlling the time of the cutter pressing to make the cutting action complete. When the KT2 timing ends, the contacts 9-10 are disconnected, and the cutter motor M2 stops, at which time the cutting action is completed.

[0040] Cutter lifting stage: when the time relay KT2 timing ends, its contacts 11-12 are closed, the relay KM3 is powered, the contactor KM3 is controlled to close, the cutter motor M2 is reversed, driving the cutter to move upward to return to the initial position. At the same time, the time relay KT3 starts timing (which can be set to 2 seconds), controlling the time of the cutter lifting to make the cutter completely reset. When the KT3 timing ends, the contacts 15-16 are disconnected, and the cutter motor M2 stops, at the same time, the contacts 1-2 are disconnected, and the time relay KT1 loses power, and the overall circuit is reset.

[0041] Cyclic cutting: after the time relay KT3 timing ends, the system completes a complete cutting cycle and returns to the initial state. The start button SB1 is still in the pressed state, and the system will enter the next cutting cycle, the relay KM1 is powered again, controlling the conveyor belt to move, starting a new round of cutting process. This cycle realizes the continuous automatic cutting of the metal sheet, obtaining the metal strip for the garbage can reinforcement.

[0042] Safety protection: during the entire cutting process, the thermal relays FR1 and FR2 monitor the operating currents of the conveyor motor M1 and the cutter motor M2, respectively. If the current abnormally increases due to excessive load or foreign matter blockage of the motor, the thermal relay will automatically disconnect the circuit to protect the motor and mechanical components from damage. The circuit breaker QF provides short-circuit protection function for the entire system.

[0043] The garbage can metal strip cutting system control circuit considers the needs of metal processing, realizes the automatic and accurate cutting of metal strips through the cooperative work of the motor-driven conveyor belt and the cutter. The system uses time relays to control the time parameters of each process, so that the accuracy and consistency of the cutting process are improved, the production efficiency and product quality are greatly improved, and the safety risk of manual operation is reduced.

[0044] The cut metal strips will be used for reinforcing the garbage can, enhancing the overall structural strength of the garbage can, prolonging the service life, and being especially suitable for high-strength use environment in public places. Through the accurate control of the size of the metal strips, the consistency and reliability of the reinforcing effect are improved, and the quality of the garbage can products is improved.

[0045] The specific embodiment is only an explanation of the utility model, and is not a limitation of the utility model. Those skilled in the art can make modifications to the embodiment without creative contribution after reading the specification, but as long as the modifications are within the scope of the claims of the utility model, they are protected by the patent law.

Claims

1. A control circuit for a cutting system of a metal strip of a garbage can, characterized in that, The utility model relates to a kind of metal strip cutting machine, including: Three-phase power supply, the three-phase power supply includes three-phase power supply line L1, L2, L3 And zero line N;The three-phase power supply is connected with circuit breaker QF;The circuit breaker QF is connected with main circuit and control circuit;Wherein, the main circuit includes cutter motor M2 And conveyor belt motor M1, respectively connected with contactor KM1, KM2, KM3 And thermal relay FR1, FR2;The control circuit includes three functional circuits: conveyor belt moving circuit, cutter down-pressing circuit and cutter up-moving circuit;The three functional circuits are sequentially executed in order, complete the cutting process of metal strip.

2. The control circuit for a trash can metal strip cutting system of claim 1, wherein: The control circuit further includes start button SB1 And time relay KT1, KT2, KT3.

3. The control circuit for a trash can metal strip cutting system of claim 1, wherein: The conveyor belt moving circuit includes relay KM1 And time relay KT1;The relay KM1 is used to control contactor KM1 closed, start conveyor belt motor M1, drive conveyor belt to move, and transport metal sheet to cutter below;The time relay KT1 is used to control the time of conveyor belt movement, so that metal sheet is accurately positioned.

4. The control circuit for a garbage can metal strip cutting system according to claim 3, wherein: The time relay KT1 is provided with contact 3-4 And contact 5-6, wherein contact 3-4 is used to disconnect after the completion of conveyor belt movement, so that conveyor belt motor M1 is stopped;Contact 5-6 is used to close after the completion of conveyor belt movement, trigger cutter down-pressing circuit.

5. The control circuit for a trash can metal strip cutting system of claim 1, wherein: The cutter down-pressing circuit includes relay KM2 And time relay KT2;The relay KM2 is used to control contactor KM2 closed, start cutter motor M2 forward rotation, drive cutter to cut down and cut metal strip;The time relay KT2 is used to control the time of cutter down-pressing.

6. The control circuit for a trash can metal strip cutting system of claim 5, wherein: The time relay KT2 is provided with contact 9-10 And contact 11-12, wherein contact 9-10 is used to disconnect after the completion of cutter down-pressing, so that cutter motor M2 is stopped;Contact 11-12 is used to close after the completion of cutter down-pressing, trigger cutter up-moving circuit.

7. The control circuit for a trash can metal strip cutting system of claim 1, wherein: The cutter up-moving circuit includes relay KM3 And time relay KT3;The relay KM3 is used to control contactor KM3 closed, start cutter motor M2 reverse rotation, drive cutter to move up and reset;The time relay KT3 is used to control the time of cutter up-moving, so that cutter is completely reset.

8. The control circuit for a trash can metal strip cutting system according to claim 7, wherein: The time relay KT3 is provided with contact 15-16 And contact 1-2, wherein contact 15-16 is used to disconnect after the completion of cutter up-moving, so that cutter motor M2 is stopped;Contact 1-2 is used to disconnect after the completion of cutter up-moving, so that time relay KT1 is de-energized, overall circuit is reset, and conveyor belt moving circuit of next round can be triggered.

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