Multi-wedge belt sheet cutting circuit system

Abstract

The utility model discloses a poly V-belt sheet cutting circuit system. The system comprises a three-phase power supply; the system comprises a lead screw motor control loop, a conveying motor control loop and a sequence control loop. The sequence control loop comprises a starting control unit, a lead screw downward-moving cutting unit, a lead screw reset unit and a conveying moving unit. The lead screw downward-moving cutting unit is used for controlling a lead screw motor to rotate forwards to drive a cutter to move downwards, and grooving is conducted on the poly V-belt sheet. The lead screw reset unit is used for controlling the lead screw motor to rotate reversely to achieve reset. The conveying and moving unit is used for controlling the conveying motor to work, moving the cut poly V-belt sheet out of the workbench and feeding a new poly V-belt sheet to be machined. The multi-wedge-belt sheet cutting device has the advantages that the working procedures of downward moving cutting of the lead screw, resetting of the lead screw, conveying of multi-wedge-belt sheets and the like can be automatically controlled, the consistency and reliability of the multi-wedge-belt sheet cutting process are guaranteed, meanwhile, the production efficiency is improved, and the manual operation intensity is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to drive belt processing equipment control system especially, a kind of multi-ribbed belt sheet cutting circuit system, applied to the multi-ribbed belt sheet processing in the field of industrial automation, mechanical transmission. BACKGROUND

[0002] Multi-ribbed belt sheet is an important mechanical transmission element, widely used in the field of automobile, industrial machinery, agricultural machinery etc., for transmitting power and realizing mechanical transmission. In the production process of multi-ribbed belt sheet, the cutting of wedge groove is a key process, and the number, depth, angle and uniformity of wedge groove directly affect the transmission performance and service life of multi-ribbed belt sheet. The traditional multi-ribbed belt sheet wedge groove cutting usually adopts manual or semi-automatic operation mode, and the operator needs to manually control the down movement of cutting knife, reset and the conveying of multi-ribbed belt sheet, which not only has low work efficiency, but also leads to unstable product quality due to human factors.

[0003] The existing multi-ribbed belt sheet cutting system has the following problems: first, the cutting process relies on manual control, and the operator needs to manually control the depth and time of the down movement of the cutting knife, which is difficult to ensure the consistency of each multi-ribbed belt sheet wedge groove, resulting in uneven product quality; second, the start-stop operation of the lead screw motor is frequent, and there is lack of automatic protection measures, which easily leads to motor overload damage; third, the connection between cutting and conveying processes lacks automatic control and needs manual intervention, which reduces production efficiency; fourth, the operator needs to repeat the same operation for a long time, which is easy to fatigue and increases the risk of operation errors. In addition, the traditional cutting method is difficult to adapt to mass production and high-quality production demand, which restricts the development of multi-ribbed belt sheet manufacturing enterprises.

[0004] Therefore, it is of important practical value to develop a multi-ribbed belt sheet cutting circuit system that can automatically control the entire cutting process, ensure product quality consistency, improve production efficiency and have perfect protection function. UTILITY MODEL CONTENT

[0005] The utility model aims to provide a kind of multi-ribbed belt sheet cutting circuit system, can automatically control the down movement of lead screw cutting, lead screw reset and the conveying of multi-ribbed belt sheet and other work processes, ensure the consistency and reliability of multi-ribbed belt sheet cutting process, improve production efficiency and reduce manual operation intensity.

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

[0007] A kind of multi-ribbed belt sheet cutting circuit system, including: three-phase power supply L1, L2, L3 and ground PE, the three-phase power supply is accessed system through total circuit breaker QF;The system includes: screw motor control loop, conveying motor control loop and sequence control loop;Wherein, the screw motor control loop includes contactor KM1, KM2, thermal relay FR1 and screw motor M1;The conveying motor control loop includes contactor KM3, KM4, thermal relay FR2 and conveying motor M2;The sequence control loop includes start control unit, screw down cutting unit, screw reset unit and conveying movement unit;The screw down cutting unit is used to control screw motor forward rotation and drive cutter down, and cuts groove to multi-ribbed belt sheet;The screw reset unit is used to control screw motor reverse rotation and realize reset;The conveying movement unit is used to control conveying motor and move multi-ribbed belt sheet cut out workbench and send into new multi-ribbed belt sheet to be processed.

[0008] The utility model further sets up: the start control unit includes: button switch SB1, button switch SB2 and relay KA1;Button switch SB2 is connected after the contact 1-2 of relay KA1 in series, and the coil circuit of relay KA1 is connected to form self-locking;The normally open contact 3-4 of relay KA1 is connected with screw down cutting unit, for starting screw down cutting unit.

[0009] The utility model further sets up: the screw down cutting unit includes: thermal relay FR1, time relay KT1 and contactor KM1;The normally open contact 3-4 of relay KA1 is connected with the coil circuit of time relay KT1 and the coil circuit of contactor KM1;The main contact of contactor KM1 is connected with screw motor M1, for driving screw motor forward rotation, and drives cutter down and cuts groove operation.

[0010] The utility model further sets up: the screw reset unit includes: relay KA1, time relay KT2 and contactor KM2;The normally open contact 9-10 of time relay KT1 is connected with the coil circuit of time relay KT2;The coil of contactor KM2 is connected with the normally open contact 9-10 of time relay KT1 in series;The main contact of contactor KM2 is reversely connected with screw motor M1, for driving screw motor reverse rotation, realizes screw reset.

[0011] The utility model further sets up: conveying mobile unit includes: time relay KT3, reset switch SB3, contactor KM3 and contactor KM4, the normally open contact 13-14 of time relay KT2 is connected with the coil circuit of time relay KT3, is used for starting conveying movement, the coil of contactor KM3 is connected in series with the normally open contact 13-14 of time relay KT2, the main contact of contactor KM3 is connected with conveying motor M2, is used for driving conveying motor forward rotation, drives multiple wedge belt sheet output, reset switch SB3 is connected with the coil of contactor KM4, is used for controlling conveying motor reverse position.

[0012] The utility model further sets up: the system still includes safety device, safety device includes thermal relay FR1 and thermal relay FR2, is used for monitoring the working current of screw rod motor and conveying motor respectively and cuts off the power supply under overload condition, protects the motor from being damaged.

[0013] The utility model further sets up: time relay KT1 is power-on delay type relay, is used for controlling the working time of screw rod motor M1 forward rotation, ensures that the cutting knife moves down to the appropriate position and stops automatically, when its contact 7-8 breaks, makes relay KM1 power off, stops screw rod motor forward rotation.

[0014] The utility model further sets up: time relay KT2 is power-on delay type relay, is used for controlling the working time of screw rod motor M1 reverse rotation, ensures that the screw rod resets completely and stops automatically, when its contact 11-12 breaks, makes relay KM2 power off, stops screw rod motor reverse rotation.

[0015] The utility model further sets up: time relay KT3 is power-on delay type relay, is used for controlling the working time of conveying motor M2 forward rotation, ensures that the multiple wedge belt sheet that cutting is completed is removed from the workbench completely and stops automatically, when its contact 15-16 breaks, makes relay KM3 power off, stops conveying motor forward rotation.

[0016] The utility model further sets up: screw rod motor and conveying motor are three-phase asynchronous motor, are powered through three-phase power supply L1, L2, L3, and the U1, V1, W1 terminal of motor is connected with three-phase power supply through the main contact of thermal relay and contactor, and the motor housing is grounded through PE terminal, ensures the safe operation of equipment.

[0017] Summarized above, the utility model has following beneficial effect:

[0018] The system realizes automatic control of the screw rod descending cutting, screw rod resetting and multi-wedge belt sheet conveying through a sequential control circuit, and only needs an operator to press a start button SB2 to start a complete working cycle, thereby greatly reducing the manual operation strength and improving the working efficiency. After the cutting is completed, the system automatically controls the conveying belt to move out the multi-wedge belt sheet after the cutting is completed, reduces the manual intervention and improves the production continuity.

[0019] The system adopts a time relay KT1 to accurately control the working time of the screw rod motor, ensures the consistency of the depth and time of each cutter descending, guarantees the uniformity and consistency of the wedge groove cutting of the multi-wedge belt sheet and improves the stability of the product quality. Compared with the manual control, the automatic control system can control the product cutting quality in a smaller error range.

[0020] The system adopts thermal relays FR1 and FR2 to protect the motor from overload, can cut off the power supply in time when the motor is overloaded and prevent the motor from burning out. Meanwhile, the motor shell is grounded through a PE terminal to prevent the danger of electric leakage and improve the safety of the equipment operation. The accurate control of the time relay also avoids the problems of the cutter descending excessively due to the operation mistakes and protects the safety of the equipment and products. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a circuit principle diagram of the multi-wedge belt sheet cutting circuit system of the utility model. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor belong to the protection scope of the utility model.

[0023] In the description of the utility model, it is understood that the orientations or position relationships 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 orientations or position relationships shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and are not intended to indicate or imply that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0024] As Figure 1The utility model provides a multiple wedge belt sheet cutting circuit system, including three -phase power supply L1, L2, L3 and ground wire PE, passes through total circuit breaker QF and accesses the system. The system is mainly composed of screw rod motor control loop, conveying motor control loop and sequential control loop three parts.

[0025] Screw rod motor control loop includes contactor KM1, contactor KM2, thermal relay FR1 and screw rod motor M1. Screw rod motor M1 is three -phase asynchronous motor, is connected with three -phase power supply through the main contact of contactor KM1 or KM2. Contactor KM1 controls screw rod motor positive rotation, is used to drive cutter to go down; Contactor KM2 controls screw rod motor reverse, is used to realize screw rod reset. Thermal relay FR1 is connected with screw rod motor, is used to monitor the working current of motor, automatically disconnects circuit when motor overload, protects motor from damage. The shell of screw rod motor is grounded through PE terminal, ensures the safe operation of equipment.

[0026] Conveying motor control loop includes contactor KM3, contactor KM4, thermal relay FR2 and conveying motor M2. Conveying motor M2 is also three -phase asynchronous motor, is connected with three -phase power supply through the main contact of contactor KM3 or KM4. Contactor KM3 controls conveying motor positive rotation, is used to convey the multiple wedge belt sheet of cutting completion to the workbench; Contactor KM4 controls conveying motor reverse, is used to send the new multiple wedge belt sheet to be processed into the workbench. Thermal relay FR2 is connected with conveying motor, is used for overload protection. The shell of conveying motor is also grounded through PE terminal, guarantees the safety of equipment.

[0027] Sequential control loop is the core part of the system, mainly by starting control unit, screw rod down cutting unit, screw rod reset unit and conveying movement unit. The above-mentioned control unit is connected with each other through the contact of relay KA1 and time relay KT1, KT2, KT3, forms a strict sequence control chain, ensures that each process carries out in turn according to the predetermined order.

[0028] Starting control unit includes button switch SB1, button switch SB2 and relay KA1. When the initial state of system, first press button switch SB1 to the system total starting, then press button switch SB2 to start cutting process. When pressing SB2, the coil of relay KA1 is electrified, and its normally open contact 1-2 is closed, forming a self-locking loop, even if the button is released, the relay KA1 still maintains the electrified state. The normally open contact 3-4 of relay KA1 is closed, and the screw rod down cutting unit is powered, and the cutting process is started.

[0029] The screw rod descending cutting unit includes a thermal relay FR1, a time relay KT1 and a contactor KM1. When the normally open contact 3-4 of the relay KA1 is closed, the coil of the time relay KT1 is powered, and the coil of the contactor KM1 is powered at the same time. The main contact of the contactor KM1 is closed, and the screw rod motor M1 starts to rotate in the positive direction, driving the cutting knife to descend and cut the wedge groove of the V-belt sheet. The time setting of the time relay KT1 ensures that the cutting knife stops after descending to the appropriate depth (the contacts 7-8 of the time relay KT1 are disconnected, and the relay KM1 is powered off).

[0030] The screw rod resetting unit includes the relay KA1, a time relay KT2 and a contactor KM2. When the cutting is completed and the time of the time relay KT1 ends, the normally open contact 9-10 is closed, the coil of the time relay KT2 is powered, and the coil of the contactor KM2 is powered at the same time. The main contact of the contactor KM2 is closed, and the screw rod motor M1 starts to rotate in the reverse direction, driving the cutting knife to ascend and reset the screw rod. The time setting of the time relay KT2 ensures that the screw rod stops after being completely reset (the contacts 11-12 of the time relay KT2 are disconnected, and the relay KM2 is powered off).

[0031] The conveying moving unit includes a time relay KT3, a reset switch SB3, a contactor KM3 and a contactor KM4. When the screw rod resetting is completed and the time of the time relay KT2 ends, the normally open contact 13-14 is closed, the coil of the time relay KT3 is powered, and the coil of the contactor KM3 is powered at the same time. The main contact of the contactor KM3 is closed, and the conveying motor M2 starts to rotate in the positive direction, moving the V-belt sheet after cutting out of the workbench. The time setting of the time relay KT3 ensures that the V-belt sheet stops after being completely moved out of the workbench (the contacts 15-16 of the time relay KT3 are disconnected, and the relay KM3 is powered off). After the operator takes out the cut V-belt sheet and places the new V-belt sheet to be processed, the operator continuously presses the reset switch SB3, the coil of the contactor KM4 is powered, and the conveying motor M2 rotates in the reverse direction, sending the new V-belt sheet into the workbench position.

[0032] The working flow of the system is as follows:

[0033] Preparation stage: the operator places the V-belt sheet to be processed on the workbench, then turns on the power supply, closes the main circuit breaker QF, and the system is in standby state.

[0034] Starting stage: the operator presses the button switch SB1 to start the system, and then presses the button switch SB2 to start the cutting process. The relay KA1 is powered and self-locked, and the system enters the working state.

[0035] Screw down cutting phase: The normally open contact 3-4 of relay KA1 is closed, the coil of time relay KT1 and contactor KM1 is energized. The main contact of contactor KM1 is closed, the screw motor M1 is turned on, and the cutter is driven to move down to cut the wedge groove of the V-belt sheet.

[0036] Screw reset phase: After cutting is completed, the time delay of time relay KT1 ends, its normally open contact 9-10 is closed, the coil of time relay KT2 and contactor KM2 is energized. The main contact of contactor KM2 is closed, the screw motor M1 is reversed, and the cutter is driven to move up, realizing screw reset.

[0037] V-belt sheet conveying phase: After screw reset is completed, the time delay of time relay KT2 ends, its normally open contact 13-14 is closed, the coil of time relay KT3 and contactor KM3 is energized. The main contact of contactor KM3 is closed, the conveying motor M2 is turned on, and the conveying belt is driven to run, moving the cut V-belt sheet out of the workbench.

[0038] New V-belt sheet input phase: The operator takes out the cut V-belt sheet, puts in the new V-belt sheet to be processed, and then keeps pressing the reset switch SB3. The coil of contactor KM4 is energized, and the conveying motor M2 is reversed to send the new V-belt sheet into the workbench position.

[0039] Cyclic working phase: The operator presses the button switches SB1 and SB2 again, and the system repeats the above-mentioned screw down cutting, screw reset, and V-belt sheet conveying process, realizing continuous processing of the V-belt sheet.

[0040] The time delay settings of the time relays in the system are as follows:

[0041] Time relay KT1: Its time delay determines the time of screw motor forward rotation, i.e. the depth of cutter moving down, which needs to be adjusted appropriately according to the specifications of V-belt sheet and the required wedge groove depth, to ensure that the groove depth meets the requirements.

[0042] Time relay KT2: Its time delay determines the time of screw motor reverse rotation, i.e. the degree of screw reset, which needs to ensure that the screw can be completely reset, preparing for the next cutting.

[0043] Time relay KT3: Its time delay controls the time of conveying motor forward rotation, i.e. the distance of V-belt sheet conveying, which needs to ensure that the cut V-belt sheet can be completely moved out of the workbench, and at the same time, enough space is reserved for the input of new V-belt sheet.

[0044] The time delay parameters of the above-mentioned time relays can be fine-tuned by adjusting the knobs on the relays, to adapt to the cutting requirements of V-belt sheets of different specifications and ensure the best cutting effect.

[0045] The multi-wedge belt sheet cutting circuit system of the utility model adopts a relay logic control structure, does not rely on a complex programming controller, and realizes automatic control function through contact state conversion and time relay delay.

[0046] Compared with a traditional manual or semi-automatic cutting method, the utility model has the following advantages: firstly, the degree of automation is high, automatic control of screw rod downward cutting, screw rod resetting and multi-wedge belt sheet conveying is realized, and production efficiency is greatly improved; secondly, the system adopts a time relay to accurately control the time of each process, and guarantees cutting quality stability.

[0047] The utility model can be applied to cutting processing of various specifications of multi-wedge belt sheets, and through adjustment of the delay parameter of the time relay, the cutting demand of different specifications of multi-wedge belt sheets can be adapted.

[0048] The above merely illustrates the specific implementation manner of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model. Therefore, the protection scope of the utility model should be subject to the protection scope of claims.

Claims

1. A multi-vee belt sheet cutting circuitry characterized by, The system comprises a three-phase power supply L1, L2, L3 and a ground wire PE, which are connected to the system through a total circuit breaker QF; the system comprises a lead screw motor control circuit, a conveying motor control circuit and a sequence control circuit; wherein the lead screw motor control circuit comprises contactors KM1, KM2, a thermal relay FR1 and a lead screw motor M1; the conveying motor control circuit comprises contactors KM3, KM4, a thermal relay FR2 and a conveying motor M2; the sequence control circuit comprises a start control unit, a lead screw downward cutting unit, a lead screw reset unit and a conveying movement unit; the lead screw downward cutting unit is used to control the forward rotation of the lead screw motor to drive the cutter to move downward to cut grooves on the V-belt sheet; the lead screw reset unit is used to control the reverse rotation of the lead screw motor to realize reset; the conveying movement unit is used to control the operation of the conveying motor to move the cut V-belt sheet out of the workbench and send the new V-belt sheet to be processed. The start control unit comprises a button switch SB1, a button switch SB2 and a relay KA1; the button switch SB2 is connected in series with the contact 1-2 of the relay KA1, and is connected with the coil circuit of the relay KA1 to form a self-locking; the normally open contact 3-4 of the relay KA1 is connected with the lead screw downward cutting unit to start the lead screw downward cutting unit.

2. The multi-vee belt sheet cutting circuitry of claim 1, wherein: The lead screw downward cutting unit comprises a thermal relay FR1, a time relay KT1 and a contactor KM1; the normally open contact 3-4 of the relay KA1 is connected with the coil circuit of the time relay KT1 and the coil circuit of the contactor KM1; the main contact of the contactor KM1 is connected with the lead screw motor M1 to drive the forward rotation of the lead screw motor to drive the cutter to move downward to cut grooves.

3. The multi-vee belt sheet cutting circuitry of claim 1, wherein: The lead screw reset unit comprises a relay KA1, a time relay KT2 and a contactor KM2; the normally open contact 9-10 of the time relay KT1 is connected with the coil circuit of the time relay KT2; the coil of the contactor KM2 is connected in series with the normally open contact 9-10 of the time relay KT1; the main contact of the contactor KM2 is reversely connected with the lead screw motor M1 to drive the reverse rotation of the lead screw motor to realize reset.

4. The multi-vee belt sheet cutting circuitry of claim 3 wherein: The conveying movement unit comprises a time relay KT3, a reset switch SB3, a contactor KM3 and a contactor KM4; the normally open contact 13-14 of the time relay KT2 is connected with the coil circuit of the time relay KT3 to start the conveying movement; the coil of the contactor KM3 is connected in series with the normally open contact 13-14 of the time relay KT2; the main contact of the contactor KM3 is connected with the conveying motor M2 to drive the forward rotation of the conveying motor to drive the V-belt sheet to be output; the reset switch SB3 is connected with the coil of the contactor KM4 to control the reverse rotation of the conveying motor to reset.

5. The multi-vee belt sheet cutting circuitry of claim 4 wherein: The system further comprises a safety protection device, which comprises a thermal relay FR1 and a thermal relay FR2, respectively used to monitor the working current of the lead screw motor and the conveying motor and cut off the power supply in the case of overload to protect the motors from being damaged.

6. The multi-vee belt sheet cutting circuitry of claim 1, wherein: ​ 7. The multi-vee belt sheet cutting circuitry of claim 3 wherein: The time relay KT1 is a power-on delay type relay, which is used to control the working time of the positive rotation of the lead screw motor M1, to ensure that the cutter automatically stops after moving to the appropriate position, and when the contacts 7-8 are disconnected, the relay KM1 is powered off, and the positive rotation of the lead screw motor is stopped.

8. The multi-vee belt sheet cutting circuitry of claim 4 wherein: The time relay KT2 is a power-on delay type relay, which is used to control the working time of the reverse rotation of the lead screw motor M1, to ensure that the lead screw automatically stops after completely resetting, and when the contacts 11-12 are disconnected, the relay KM2 is powered off, and the reverse rotation of the lead screw motor is stopped.

9. The multi-vee belt sheet cutting circuitry of claim 5 wherein: The time relay KT3 is a power-on delay type relay, which is used to control the working time of the positive rotation of the conveying motor M2, to ensure that the multi-wedge belt sheet after cutting is completely moved out of the workbench, and automatically stops, and when the contacts 15-16 are disconnected, the relay KM3 is powered off, and the positive rotation of the conveying motor is stopped.

10. The multi-vee belt sheet cutting circuitry of claim 1 wherein: The lead screw motor and the conveying motor are both three-phase asynchronous motors, which are powered by three-phase power supply L1, L2, L3, the U1, V1, W1 terminals of the motor are connected to the three-phase power supply through the main contacts of the thermal relay and the contactor, and the motor housing is grounded through the PE terminal to ensure the safety of the equipment operation.

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