NTC (Negative Temperature Coefficient) wire cutting machine and belt tension control system and method
By designing an automated belt tension control system, the problem of labor and time consuming belt tension calibration of the main roller of the NTC wire cutting machine is solved, and precise belt tightness adjustment and product quality improvement are achieved.
Patent Information
- Application Number
- CN202510356399.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-25
- Publication Date
- 2025-06-20
AI Technical Summary
In the prior art, the calibration method of the belt tension of the main roller of the NTC wire cutting machine consumes a lot of manpower and takes a long time, resulting in product quality defects such as WARP exceeding the standard after the silicon wafer is cut.
A belt tension control system is designed, including a tension detection module, a tension adjustment module and a control module. By automatically detecting and adjusting the tension of the main roller belt, precise belt tightness adjustment is achieved.
The automaticity of the belt tension calibration of the main roller of the NTC wire cutting machine is achieved, reducing manpower and time investment, improving the cutting accuracy and surface quality of the product, and reducing production costs.
Smart Images
Figure CN120170912A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field of semiconductor material processing equipment, and particularly relates to an NTC wire cutting machine, a belt tension control system and a method. Background Art
[0002] In the field of semiconductor material processing, especially in the silicon wafer cutting process, the NTC wire cutting machine, as an efficient and precise processing equipment, plays a crucial role. However, in the actual production process, product quality defects such as excessive WARP often occur after the silicon wafers are cut, which not only seriously affects the product qualification rate and stability, but also causes a large amount of loss and waste of manpower, material resources and financial resources.
[0003] To address this issue, technicians conducted in-depth analysis and found that one of the main reasons for excessive WARP of silicon wafers is the unstable tension of the main roller belt of the NTC wire cutting machine. As a key component for transporting silicon wafers, the tension of the main roller belt directly affects the cutting accuracy and surface quality of the silicon wafers. When the belt tension is too large or too small, it will cause uneven stress on the silicon wafers during the cutting process, resulting in defects such as WARP.
[0004] The traditional calibration method for the main roller belt tension requires at least 2 people to cooperate. First, the external casing needs to be removed. One person uses an acoustic tension detector to approach the belt, and the other person uses a metal object to tap the belt to detect the tension. After detection, manually adjust the position of the belt pulley for calibration, and then cover the casing. It can be seen that it requires a lot of manpower and time. Summary of the Invention
[0005] In view of this, the present invention provides an NTC wire cutting machine, a belt tension control system and a method to solve the technical problem that the calibration method for the main roller belt tension in the prior art consumes a lot of manpower and time.
[0006] To achieve the above object, the present application adopts the following solutions: A belt tension control system includes a tension detection module, a tension adjustment module and a control module. The tension detection module is arranged on the body of the NTC wire cutting machine, the tension adjustment module is arranged on the main roller belt pulley of the NTC wire cutting machine. The tension detection module is used to detect the tension of the main roller belt on the NTC wire cutting machine, the tension adjustment module is used to adjust the tightness of the main roller belt, and the control module is used to control the operation of the tension detection module and the tension adjustment module: The tension detection module includes a fixed bottom plate, a movable supporting plate, a tension detector, a telescopic electromagnet, and a sound wave induction probe. The movable supporting plate is slidably connected to the fixed bottom plate and can move forward or backward along the fixed bottom plate. The tension detector, the telescopic electromagnet, and the sound wave induction probe are all arranged at the forward end of the movable supporting plate, and the probe of the tension detector is connected to the telescopic electromagnet; The tension adjustment module includes a tightening and loosening adjustment plate, a tightening and loosening adjustment screw rod, and a driving mechanism. The tightening and loosening adjustment plate is connected to the main roller pulley, and the driving mechanism can drive the rotation of the tightening and loosening adjustment screw rod to drive the longitudinal displacement of the tightening and loosening adjustment plate and drive the longitudinal displacement of the main roller pulley to adjust the tightness of the main roller belt.
[0007] Preferably, the driving mechanism is a tightening and loosening motor, and a tightening and loosening motor brake is arranged on the tightening and loosening motor for braking the tightening and loosening motor.
[0008] Preferably, the tension detection module further includes a forward and backward motor and a screw rod and guide rail set. The forward and backward motor controls the forward and backward movement of the movable supporting plate on the fixed bottom plate through the screw rod and guide rail set.
[0009] Preferably, the tension detection module further includes a limit switch. The limit switch is used to send a signal when the tension detection module moves to a preset position, and when the control module receives this signal, it controls the forward and backward motor to stop.
[0010] Preferably, the tension detection module further includes a limiting component. The limiting component is arranged on the fixed bottom plate, and the limiting component includes at least one forward limiting block and at least one backward limiting block.
[0011] Preferably, the tension detection module further includes an elastic member. The elastic member is arranged at any end of the telescopic electromagnet.
[0012] Preferably, the elastic member is a spring.
[0013] Preferably, the control module includes a PLC controller and a touch screen display. The PLC controller is used to receive the measurement data of the tension detection module and control the operation of the tension adjustment module according to a preset algorithm, and the touch screen display is used to display the measurement data and the operation interface.
[0014] A belt tension control method includes the following steps: S10. Fix the fixed bottom plate in the above belt tension control system on the body of the NTC wire cutting machine and install and debug the control module; S20. Adjust the tension on the tension detector to the standard tension; S30. Control the moving supporting plate to move in the forward direction through the control module. After being powered on, under the action of the telescopic electromagnet, when the probe of the tension detector touches the main roller belt, a first sound wave is generated. When the sound wave induction probe senses the first sound wave, it sends a signal to the control module. After receiving the signal, the control module shuts down the system. After being powered off, the moving supporting plate stops moving, and the iron core of the telescopic electromagnet impacts the main roller belt, generating a second sound wave. The probe of the tension detector connected to the iron core senses the second sound wave, and the detected tension is displayed on the tension detector. S40. Compare the standard tension with the detected tension. If the detected tension is not equal to the standard tension, start the drive mechanism through the control module. The drive mechanism drives the tension adjustment screw rod to rotate, so as to drive the tension adjustment plate to move longitudinally and drive the main roller pulley to move longitudinally to adjust the tightness of the main roller belt.
[0015] An NTC wire cutting machine includes a belt tension control system, which includes a tension detection module, a tension adjustment module and a control module. The tension detection module is arranged on the body of the NTC wire cutting machine, and the tension adjustment module is arranged on the main roller pulley of the NTC wire cutting machine. The tension detection module is used to detect the tension of the main roller belt on the NTC wire cutting machine, the tension adjustment module is used to adjust the tightness of the main roller belt, and the control module is used to control the operation of the tension detection module and the tension adjustment module: The tension detection module includes a fixed bottom plate, a moving supporting plate, a tension detector, a telescopic electromagnet and a sound wave induction probe. The moving supporting plate is slidably connected to the fixed bottom plate, and the moving supporting plate can move in the forward or backward direction along the fixed bottom plate. The tension detector, the telescopic electromagnet and the sound wave induction probe are all arranged at the forward end of the moving supporting plate, and the probe of the tension detector is connected to the telescopic electromagnet; The tension adjustment module includes a tension adjustment plate, a tension adjustment screw rod and a drive mechanism. The tension adjustment plate is connected to the main roller pulley, and the drive mechanism can drive the rotation of the tension adjustment screw rod to drive the tension adjustment plate to move longitudinally and drive the main roller pulley to move longitudinally to adjust the tightness of the main roller belt.
[0016] In the above belt tension control system and method, a fixed base plate is arranged on the body of the NTC wire cutting machine, and the tension value of the tension detector is set to the standard tension value to ensure an accurate reference for subsequent detection. Next, the control module controls the moving support plate to move forward. Since the probe of the tension detector is connected to the telescopic electromagnet, after the system is started, the telescopic electromagnet generates a magnetic field when powered on. The iron core in the telescopic electromagnet is magnetized to generate a magnetic force, causing the iron core to retract. Since the probe of the tension detector is connected to the iron core, when the moving support plate moves forward, it drives the probe of the tension detector and the acoustic wave induction probe on the telescopic electromagnet to move forward. When the probe of the tension detector touches the main roller belt, a first acoustic wave is generated. When the acoustic wave induction probe senses the first acoustic wave, it sends a signal to the control module. After the control module receives the signal, the control module controls the moving support plate to stop moving. That is, after power-off, at this time, the magnetic field of the telescopic electromagnet disappears, and the iron core returns to its original position by gravity, that is, the iron core impacts on the main roller belt, generating a second acoustic wave. The probe of the tension detector connected to the iron core senses the second acoustic wave, and the detected tension is displayed on the tension detector. By comparing the detected tension with the standard tension, if the detected tension is less than the standard tension, it means the belt is too loose. The control module starts the driving mechanism to drive the tension adjustment screw to rotate. The rotation of the screw drives the tension adjustment plate to move vertically upward, and then drives the main roller pulley to move vertically upward, thereby reducing the tightness of the belt. If the detected tension is greater than the standard tension, it means the belt is too tight. The control module starts the driving mechanism to drive the tension adjustment screw to rotate (in the reverse direction). The rotation of the screw drives the tension adjustment plate to move vertically downward, and then drives the main roller pulley to move vertically downward, thereby increasing the tightness of the belt. Using the above device and method provided by the present invention, only one person is required to complete the adjustment of the tightness of the main roller belt of the NTC wire cutting machine, and the time-consuming is short.
[0017] The above system and method can also avoid the instability of manually knocking the belt to detect the tension, thereby improving the accuracy of belt tension detection, and can avoid accidentally damaging the probe of the tension detector due to knocking the belt with a metal object. Brief Description of the Drawings
[0018] Figure 1 It is a schematic diagram of the on-site where the casing of the NTC wire cutting machine needs to be removed in the background technology of the present invention.
[0019] Figure 2 It is a schematic diagram of the main roller belt on the NTC wire cutting machine in the background technology of the present invention.
[0020] Figure 3 It is a schematic diagram of the on-site where the tension detector is used to detect the tension of the main roller belt in the background technology of the present invention.
[0021] Figure 4This is a schematic structural diagram of the present invention.
[0022] Figure 5 This is a schematic structural diagram of the tension detection module in the present invention.
[0023] Figure 6 This is a schematic structural diagram of the tension adjustment module in the present invention.
[0024] In the figure, there are a tension detection module 100, a tension adjustment module 200, an NTC wire cutting machine 300, a main roller pulley 310, a main roller belt 320, a fixed bottom plate 110, a movable support plate 120, a tension detector 130, a telescopic electromagnet 140, a sound wave induction probe 150, a tension adjustment plate 210, a tension adjustment screw rod 220, a driving mechanism 230, a tension adjustment motor 231, a tension adjustment motor brake 232, a forward and backward movement motor 160, a screw rod and guide rail complete set 170, and a spring 190. Detailed implementation manners
[0025] To facilitate the understanding of the present application, the present application will be described more comprehensively below in conjunction with the accompanying drawings. And the preferred embodiments of the present application are given. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.
[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used in the specification of this application herein are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.
[0027] Please refer to Figures 4 to 6 , in a specific embodiment, a belt tension control system includes a tension detection module 100, a tension adjustment module 200 and a control module. The tension detection module 100 is arranged on the body of the NTC wire cutting machine 300, the tension adjustment module 200 is arranged on the main roller pulley 310 of the NTC wire cutting machine 300. The tension detection module 100 is used to detect the tension of the main roller belt 320 on the NTC wire cutting machine 300, the tension adjustment module 200 is used to adjust the tightness of the main roller belt 320, and the control module is used to control the operation of the tension detection module 100 and the tension adjustment module 200, wherein: The tension detection module 100 includes a fixed bottom plate 110, a movable supporting plate 120, a tension detector 130, a telescopic electromagnet 140, and an acoustic wave induction probe 150. The movable supporting plate 120 is slidably connected to the fixed bottom plate 110 and can move forward or backward along the fixed bottom plate 110. The tension detector 130, the telescopic electromagnet 140, and the acoustic wave induction probe 150 are all arranged at the forward end of the movable supporting plate 120. The probe of the tension detector 130 is connected to the telescopic electromagnet 140. The tension adjustment module 200 includes a tension adjustment plate 210, a tension adjustment screw rod 220, and a driving mechanism 230. The tension adjustment plate 210 is connected to the main roller pulley 310. The driving mechanism 230 can drive the rotation of the tension adjustment screw rod 220 to drive the longitudinal displacement of the tension adjustment plate 210 and drive the longitudinal displacement of the main roller pulley 310 to adjust the tightness of the main roller belt 320. It should be noted that in the present invention, the probe of the tension detector 130 in the prior art is extended for easy operation. The movable supporting plate 120 slides on the fixed bottom plate 110 and can adjust the position of the acoustic wave induction probe 150 as needed to adapt to main roller belts 320 of different widths or types.
[0028] After the system starts up, the tension detection module 100 begins to work. The probe of the tension detector 130 is connected to the telescopic electromagnet 140. After the telescopic electromagnet 140 is powered on, a magnetic field is generated. The iron core inside the telescopic electromagnet 140 is magnetized, generating a magnetic force that causes the iron core to retract. The probe of the tension detector 130 is connected to the iron core. When the moving support plate 120 advances, it drives the probe of the tension detector 130 on the telescopic electromagnet 140 and the acoustic wave induction probe 150 to advance. When the probe of the tension detector 130 touches the main roller belt 320, a first acoustic wave is generated. When the acoustic wave induction probe 150 senses the first acoustic wave, it sends a signal to the control module. The control module controls the moving support plate 120 to stop moving. That is, after power-off, at this time, the magnetic field of the telescopic electromagnet 140 disappears, and the iron core returns to its original position by gravity, that is, the iron core impacts on the main roller belt 320, generating a second acoustic wave. The probe of the tension detector 130 connected to the iron core senses the second acoustic wave, and the tension detector 130 displays the detected tension. In addition, the control module can also receive the tension value transmitted from the tension detection module 100 and compare it with the preset standard tension. If the detected tension of the main roller belt 320 is not equal to the standard tension, the control module will send a signal to the tension adjustment module 200 to start the drive mechanism 230. The drive mechanism 230 drives the tension adjustment screw 220 to rotate. The rotation of the tension adjustment screw 220 drives the longitudinal displacement of the tension adjustment plate 210, and then drives the longitudinal displacement of the main roller pulley 310 connected to the tension adjustment plate 210. By adjusting the position of the main roller pulley 310, the tightness of the belt is changed to reach the preset standard tension.
[0029] When using the above device provided by the present invention, only one person is required to complete the adjustment of the tightness of the main roller belt 320 of the NTC wire cutting machine 300, and the time consumed is relatively short. Using this system can also avoid the instability of manually knocking the belt to detect tension, thereby improving the accuracy of belt tension detection, and can avoid accidentally damaging the probe of the tension detector 130 due to knocking the belt with a metal object. At the same time, the automation degree of the system is improved, reducing the skill requirements and work intensity of the operators.
[0030] Among them, the drive mechanism 230 is a tension adjustment motor 231, and a tension adjustment motor 231 brake 232 is provided on the tension adjustment motor 231 for braking the tension adjustment motor 231.
[0031] When the detected tension value exceeds the standard tension value, the control module activates the tensioning motor 231, and the brake 232 of the tensioning motor 231 is controlled to allow or restrict the rotation of the motor. For example, when adjusting the belt tension, the brake is released, and the tensioning motor 231 starts to rotate. The rotation drives the tensioning adjustment screw rod 220 through a transmission mechanism (such as gears, pulleys, etc.). The rotation of the tensioning adjustment screw rod 220 drives the longitudinal displacement of the tensioning adjustment plate 210. Since the tensioning adjustment plate 210 is connected to the main roller pulley 310, the main roller pulley 310 also moves up and down with the movement of the adjustment plate. This up and down movement changes the belt tension to reach the standard tension. After the tension of the main roller belt 320 is adjusted to the standard tension, the control module sends a signal to lock the brake 232 of the tensioning motor 231 to stop the rotation of the motor, thereby maintaining the stable tension of the main roller belt 320. This improves the automation level of the system, reduces the manual intervention time, and improves the production efficiency of the system.
[0032] In a specific embodiment, the tension detection module 100 further includes a forward and backward movement motor 160 and a screw rod and guide rail set 170. The forward and backward movement motor 160 controls the forward and backward movement of the movable support plate 120 on the fixed base plate 110 through the screw rod and guide rail set 170.
[0033] When the system starts, an initialization operation is first performed, including checking the status of each module, etc. According to the position of the main roller belt 320 to be detected or adjusted, the control module sends a signal to activate the forward and backward movement motor 160. The screw rod and guide rail set 170 operates, and the forward and backward movement motor 160 drives the screw rod to rotate through a transmission mechanism (such as a coupling, gears, etc.). The screw rod cooperates with the guide rail, and the movable support plate 120 moves forward or backward along the fixed base plate 110 to a specified position under the guidance of the screw rod and guide rail.
[0034] The setting of the forward and backward movement motor 160 and the screw rod and guide rail set 170 enables the system to adapt to belts of different widths or types for tension detection, increasing the flexibility of the system.
[0035] To ensure that the movable supporting plate 120 can move accurately and reliably to the preset position for tension detection, further, the tension detection module 100 further includes a limit switch. The limit switch is used to emit a signal when the tension detection module 100 moves to the preset position, and when the control module receives this signal, it controls the forward and backward motor 160 to stop. When the movable supporting plate 120 needs to move to the preset position for tension detection, the forward and backward motor 160 starts and drives the screw guide complete set 170 to work, so that the movable supporting plate 120 drives the tension detection module 100 to move forward or backward along the fixed base plate 110. When the movable supporting plate 120 moves to the preset position, the limit switch is triggered and emits a signal. After the control module receives this signal, it immediately controls the forward and backward motor 160 to stop working, thereby ensuring that the movable supporting plate 120 can accurately stay at the preset position for tension detection.
[0036] It can not only ensure the accuracy and stability of the movable supporting plate 120 during the movement, but also prevent equipment damage or safety accidents caused by motor out-of-control. In addition, the setting of the limit switch also reduces the maintenance cost and operation cost of the system, and improves the overall efficiency of the system.
[0037] Considering that the malfunction or damage of the limit switch may cause the movable supporting plate 120 to exceed the preset position during movement, thereby resulting in equipment damage or safety accidents, further, the tension detection module 100 further includes a limiting component. The limiting component is arranged on the fixed base plate 110, and the limiting component includes at least one forward limit block and at least one backward limit block.
[0038] In the belt tension control system, the movable supporting plate 120 slides on the fixed base plate 110 to adapt to belts at different positions or with different widths for tension detection. In order to accurately control the movement range of the movable supporting plate 120 and prevent it from over-moving and damaging the equipment or affecting the detection accuracy, in this embodiment, a limiting component is arranged on the fixed base plate 110. The limiting component includes at least one forward limit block and at least one backward limit block, which are respectively located at the frontmost and rearmost positions where the movable supporting plate 120 may move to. When the movable supporting plate 120 is moving forward or backward, when the limit switch malfunctions or is damaged, when the movable supporting plate 120 contacts the limit block, due to the blocking effect of the limit block, the movable supporting plate 120 will stop moving.
[0039] Due to the mechanical protection function of the limiting component, the safety performance of the system is also enhanced. In addition, the setting of the limiting component also reduces the failure rate and maintenance cost of the system, and improves the overall efficiency and reliability of the system.
[0040] Specifically, the tension detection module 100 further includes an elastic member, and the elastic member is disposed at any end of the telescopic electromagnet 140.
[0041] In the belt tension control system, the tension detection module 100 further includes an elastic member, which is cleverly arranged at any end of the telescopic electromagnet 140. When the system is started, the tension detection module 100 is in an initial state, the telescopic electromagnet 140 is not powered on, and the elastic member maintains its inherent elastic deformation. When it is necessary to detect the belt tension, the control module sends a power-on signal to the telescopic electromagnet 140. The electromagnet generates a magnetic field under the action of an electric current, and then generates an attractive or repulsive force, driving the connected component (the probe of the tension detector 130) to perform telescopic movement.
[0042] During the telescopic process of the electromagnet, the elastic member plays a key role in buffering and stabilizing. When the electromagnet is subjected to an external force (such as the reaction force caused by the change in belt tension), the elastic member can absorb part of the energy, slow down the impact, and make the movement of the probe of the tension detector 130 more stable. Through the buffering effect of the elastic member, the vibration and impact generated by the direct force on the electromagnet can be reduced, so as to ensure that the acoustic wave induction probe 150 can stably and accurately detect the belt tension.
[0043] Specifically, the control module includes a PLC controller and a touch screen display. The PLC controller is used to receive the measurement data of the tension detection module 100 and control the operation of the tension adjustment module 200 according to a preset algorithm, and the touch screen display is used to display the measurement data and the operation interface.
[0044] In a specific embodiment, the present invention further provides a belt tension control method, including the following steps: S10. Fix the fixed base plate 110 in the belt tension control system on the body of the NTC wire cutting machine 300, and install and debug the control module; S20. Adjust the tension on the tension detector 130 to the standard tension; S30. Control the moving support plate 120 to move forward through the control module. After being powered on, when the probe of the tension detector 130 touches the main roller belt 320 under the action of the telescopic electromagnet 140, a first acoustic wave is generated. When the acoustic wave induction probe 150 senses the first acoustic wave, it sends a signal to the control module. After the control module receives the signal, it shuts down the system. After power-off, the moving support plate 120 stops moving, and the iron core of the telescopic electromagnet 140 impacts on the main roller belt 320, generating a second acoustic wave. The probe of the tension detector 130 connected to the iron core senses the second acoustic wave, and the detected tension is displayed on the tension detector 130; S40. Compare the standard tension with the detected tension. When the detected tension is not equal to the standard tension, start the drive mechanism 230 through the control module. The drive mechanism 230 drives the tension adjustment screw rod 220 to rotate, so as to drive the tension adjustment plate 210 to move longitudinally, and drive the main roller pulley 310 to move longitudinally, so as to adjust the tightness of the main roller belt 320.
[0045] In this embodiment, first, firmly install the fixed base plate 110 in the belt tension control system on the body of the NTC wire cutting machine 300, install and debug the control module, including the PLC controller, touch screen display, etc., to ensure that the functions of all components are normal and the communication is smooth; then, set the tension value of the tension detector 130 to the standard tension value to ensure an accurate reference for subsequent detection; next, control the moving support plate 120 to move forward through the control module. Since the probe of the tension detector 130 is connected to the telescopic electromagnet 140, after the system is started, the telescopic electromagnet 140 generates a magnetic field when powered on, the iron core in the telescopic electromagnet 140 is magnetized, generates magnetic force, and causes the iron core to retract. The probe of the tension detector 130 is connected to the iron core. When the moving support plate 120 moves forward, it drives the probe of the tension detector 130 on the telescopic electromagnet 140 and the acoustic wave induction probe 150 to move forward. When the probe of the tension detector 130 touches the main roller belt 320, a first acoustic wave is generated. When the first acoustic wave induction probe 150 senses the acoustic wave, it emits a signal to the control module. After the control module receives the signal, the control module controls the moving support plate 120 to stop moving, that is, after power-off, at this time, the magnetic field of the telescopic electromagnet 140 disappears, and the iron core returns to its original position by gravity, that is, the iron core impacts on the main roller belt 320, generating a second acoustic wave. The probe of the tension detector 130 connected to the iron core senses the second acoustic wave, and the detected tension is displayed on the tension detector 130. In addition, the control module can also receive the detected tension transmitted from the tension detection module 100 and compare it with the preset standard tension. If the detected tension is not equal to the standard tension, the control module will send a signal to the tension adjustment module 200, and the drive mechanism 230 of the tension adjustment module 200 is started to drive the tension adjustment screw 220 to rotate. The rotation of the tension adjustment screw 220 drives the longitudinal displacement of the tension adjustment plate 210, and then drives the longitudinal displacement of the main roller pulley 310 connected to the tension adjustment plate 210. By adjusting the position of the main roller pulley 310, the tightness of the belt is changed to make it reach the preset standard tension. For example: if the detected tension is less than the standard tension, it means the belt is too loose. The drive mechanism 230 is started through the control module to drive the tension adjustment screw 220 to rotate. The rotation of the screw drives the tension adjustment plate 210 to move vertically upward, and then drives the main roller pulley 310 to move vertically upward, thereby reducing the tightness of the belt; if the detected tension is greater than the standard tension, it means the belt is too tight. The drive mechanism 230 is started through the control module to drive the tension adjustment screw 220 to rotate (in the reverse direction). The rotation of the screw drives the tension adjustment plate 210 to move vertically downward, and then drives the main roller pulley 310 to move vertically downward, thereby increasing the tightness of the belt.
[0046] Using the above-mentioned device and method provided by the present invention, only one person can complete the adjustment of the tightness of the main roller belt 320 of the NTC wire cutting machine 300, and the time consumption is short. The above system and method can also avoid the instability of manually knocking the belt to detect the tension, thereby improving the accuracy of belt tension detection, and can avoid damaging the probe of the tension detector 130 due to knocking the belt with metal objects. And by precisely controlling the belt tension, the stable operation of the machine can be ensured and the production efficiency can be improved.
[0047] In a specific embodiment, the present invention further provides an NTC wire cutting machine 300, including a belt tension control system, which includes a tension detection module 100, a tension adjustment module 200 and a control module. The tension detection module 100 is arranged on the body of the NTC wire cutting machine 300, and the tension adjustment module 200 is arranged on the main roller pulley 310 of the NTC wire cutting machine 300. The tension detection module 100 is used to detect the tension of the main roller belt 320 on the NTC wire cutting machine 300, the tension adjustment module 200 is used to adjust the tightness of the main roller belt 320, and the control module is used to control the operation of the tension detection module 100 and the tension adjustment module 200, wherein: The tension detection module 100 includes a fixed bottom plate 110, a movable supporting plate 120, a tension detector 130, a telescopic electromagnet 140 and an acoustic wave induction probe 150. The movable supporting plate 120 is slidably connected to the fixed bottom plate 110, and the movable supporting plate 120 can move in the forward or backward direction along the fixed bottom plate 110. The tension detector 130, the telescopic electromagnet 140 and the acoustic wave induction probe 150 are all arranged at the forward end of the movable supporting plate 120, and the probe of the tension detector 130 is connected to the telescopic electromagnet 140; The tension adjustment module 200 includes a tightness adjustment plate 210, a tightness adjustment screw rod 220 and a driving mechanism 230. The tightness adjustment plate 210 is connected to the main roller pulley 310, and the driving mechanism 230 can drive the rotation of the tightness adjustment screw rod 220 to drive the longitudinal displacement of the tightness adjustment plate 210 and drive the longitudinal displacement of the main roller pulley 310 to adjust the tightness of the main roller belt 320.
[0048] After the NTC wire cutting machine 300 runs for a period of time, the tightness of the main roller belt 320 on it may change, affecting the production efficiency and quality. Therefore, it is necessary for the belt tension control system to adjust the tightness (tension magnitude) of the main roller belt 320. The specific operation is as follows: After the belt tension control system is started, the tension detection module 100 starts to work. The probe of the tension detector 130 is connected to the telescopic electromagnet 140. The telescopic electromagnet 140 generates a magnetic field after being powered on. The iron core in the telescopic electromagnet 140 is magnetized, generating a magnetic force that causes the iron core to retract. The probe of the tension detector 130 is connected to the iron core. When the moving support plate 120 moves forward, it drives the probe of the tension detector 130 on the telescopic electromagnet 140 and the acoustic wave induction probe 150 to move forward. When the probe of the tension detector 130 touches the main roller belt 320, a first acoustic wave is generated. When the acoustic wave induction probe 150 senses the first acoustic wave, it sends a signal to the control module. The control module controls the moving support plate 120 to stop moving. That is, after power-off, at this time, the magnetic field of the telescopic electromagnet 140 disappears, and the iron core returns to its original position by gravity, that is, the iron core impacts on the main roller belt 320, generating a second acoustic wave. The probe of the tension detector 130 connected to the iron core senses the second acoustic wave, and the tension detector 130 displays the detected tension. In addition, the control module can also receive the tension value transmitted by the tension detection module 100 and compare it with the preset standard tension. If the detected tension of the main roller belt 320 is not equal to the standard tension, the control module will send a signal to the tension adjustment module 200 to start the drive mechanism 230. The drive mechanism 230 drives the tension adjustment screw rod 220 to rotate. The rotation of the tension adjustment screw rod 220 drives the longitudinal displacement of the tension adjustment plate 210, and then drives the longitudinal displacement of the main roller pulley 310 connected to the tension adjustment plate 210. By adjusting the position of the main roller pulley 310, the tightness of the belt is changed to make it reach the preset standard tension.
[0049] When using the above-mentioned NTC wire cutting machine 300 provided by the present invention, only one person is required to complete the adjustment of the tightness of the main roller belt 320 of the NTC wire cutting machine 300, and the time-consuming is short. Using this system can also avoid the instability of manually knocking the belt to detect the tension, thereby improving the accuracy of belt tension detection, and can avoid accidentally damaging the probe of the tension detector 130 due to knocking the belt with a metal object. At the same time, the automation degree of the system is improved, reducing the skill requirements and working intensity of the operator.
[0050] Among them, the drive mechanism 230 is a tension adjustment motor 231, and a tension adjustment motor 231 brake 232 is also provided on the tension adjustment motor 231 for braking the tension adjustment motor 231.
[0051] When the detected tension value exceeds the standard tension value, the control module activates the tightness motor 231, and the brake 232 of the tightness motor 231 is controlled to allow or restrict the rotation of the motor. For example, when adjusting the tightness of the belt, the brake is released, and the tightness motor 231 starts to rotate. It drives the tightness adjustment screw rod 220 to rotate through a transmission mechanism (such as gears, pulleys, etc.). The rotation of the tightness adjustment screw rod 220 drives the longitudinal displacement of the tightness adjustment plate 210. Since the tightness adjustment plate 210 is connected to the main roller pulley 310, the main roller pulley 310 also moves up and down with the movement of the adjustment plate. This up and down movement changes the tightness of the belt to make it reach the standard tension. After the tension of the main roller belt 320 is adjusted to the standard tension, the control module sends a signal to lock the brake 232 of the tightness motor 231 to stop the rotation of the motor, thereby maintaining the stable tension of the main roller belt 320. This improves the automation degree of the system, reduces the manual intervention time, and improves the production efficiency of the system.
[0052] In a specific embodiment, the tension detection module 100 further includes a forward and backward motor 160 and a screw rod and guide rail set 170. The forward and backward motor 160 controls the movement of the movable support plate 120 forward and backward on the fixed base plate 110 through the screw rod and guide rail set 170.
[0053] When the system starts, an initialization operation is first performed, including checking the status of each module, etc. According to the position of the main roller belt 320 to be detected or adjusted, the control module sends a signal to activate the forward and backward motor 160, and the screw rod and guide rail set 170 works. The forward and backward motor 160 drives the screw rod to rotate through a transmission mechanism (such as a coupling, gears, etc.). The screw rod cooperates with the guide rail, and the movable support plate 120 moves forward or backward along the fixed base plate 110 to a specified position under the guidance of the screw rod and guide rail.
[0054] The setting of the forward and backward motor 160 and the screw rod and guide rail set 170 enables the system to adapt to belts of different widths or types for tension detection, increasing the flexibility of the system.
[0055] To ensure that the movable support plate 120 can move accurately and reliably to the preset position for tension detection, further, the tension detection module 100 further includes a limit switch, which is used to send a signal when the tension detection module 100 moves to the preset position, and the control module controls the stop of the forward and backward motor 160 when receiving this signal. When the movable support plate 120 needs to move to the preset position for tension detection, the forward and backward motor 160 is started and drives the screw guide complete set 170 to work, so that the movable support plate 120 drives the tension detection module 100 to move forward or backward along the fixed base plate 110. When the movable support plate 120 moves to the preset position, the limit switch is triggered and sends a signal. After the control module receives this signal, it immediately controls the forward and backward motor 160 to stop working, thereby ensuring that the movable support plate 120 can accurately stay at the preset position for tension detection. It can not only ensure the accuracy and stability of the movable support plate 120 during the movement process, but also prevent equipment damage or safety accidents caused by motor out-of-control. In addition, the setting of the limit switch also reduces the maintenance cost and operation cost of the system, and improves the overall efficiency of the system.
[0056] Considering that the failure or damage of the limit switch may cause the movable support plate 120 to exceed the preset position during movement, resulting in equipment damage or safety accidents, further, the tension detection module 100 further includes a limiting component, which is arranged on the fixed base plate 110, and the limiting component includes at least one forward limiting block and at least one backward limiting block.
[0057] In the belt tension control system, the movable support plate 120 slides on the fixed base plate 110 to adapt to belts with different positions or widths for tension detection. In order to accurately control the movement range of the movable support plate 120 and prevent it from moving excessively and damaging the equipment or affecting the detection accuracy, in this embodiment, a limiting component is arranged on the fixed base plate 110. The limiting component includes at least one forward limiting block and at least one backward limiting block, which are respectively located at the frontmost and rearmost positions where the movable support plate 120 may move to. When the movable support plate 120 is moving forward or backward, when the limit switch fails or is damaged, when the movable support plate 120 contacts the limiting block, due to the blocking effect of the limiting block, the movable support plate 120 will stop moving.
[0058] Due to the mechanical protection of the limiting component, the safety performance of the system is also enhanced. In addition, the setting of the limiting component also reduces the failure rate and maintenance cost of the system, and improves the overall efficiency and reliability of the system.
[0059] Specifically, the tension detection module 100 further includes an elastic member, and the elastic member is arranged at any end of the telescopic electromagnet 140.
[0060] In the belt tension control system, the tension detection module 100 further includes an elastic member, which is ingeniously arranged at either end of the telescopic electromagnet 140. When the system starts, the tension detection module 100 is in an initial state, the telescopic electromagnet 140 is not energized, and the elastic member maintains its inherent elastic deformation. When it is necessary to detect the belt tension, the control module sends an energization signal to the telescopic electromagnet 140. The electromagnet generates a magnetic field under the action of an electric current, and then generates an attractive force or a repulsive force, driving the connected component (the probe of the tension detector 130) to perform a telescopic movement.
[0061] During the telescopic process of the electromagnet, the elastic member plays a key role in buffering and stabilizing. When the electromagnet is subjected to an external force (such as a reaction force caused by a change in belt tension), the elastic member can absorb part of the energy, slow down the impact, and make the movement of the probe of the tension detector 130 more stable. Through the buffering effect of the elastic member, the vibration and impact generated by the direct force on the electromagnet can be reduced, so as to ensure that the acoustic wave induction probe 150 can stably and accurately detect the belt tension.
[0062] Specifically, the control module includes a PLC controller and a touch screen display. The PLC controller is used to receive the measurement data of the tension detection module 100 and control the operation of the tension adjustment module 200 according to a preset algorithm. The touch screen display is used to display the measurement data and the operation interface.
[0063] As mentioned above, the above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should be covered within the protection scope of the present invention.
Claims
1. A belt tension control system, characterized in that: It includes a tension detection module, a tension adjustment module and a control module. The tension detection module is arranged on the body of the NTC wire cutting machine, the tension adjustment module is arranged on the main roller pulley of the NTC wire cutting machine, the tension detection module is used to detect the tension of the main roller belt on the NTC wire cutting machine, the tension adjustment module is used to adjust the tightness of the main roller belt, and the control module is used to control the operation of the tension detection module and the tension adjustment module: The tension detection module includes a fixed bottom plate, a movable support plate, a tension detector, a telescopic electromagnet and a sonic sensor probe, wherein the movable support plate is slidably connected to the fixed bottom plate, and the movable support plate can move along the forward or backward direction of the fixed bottom plate, the tension detector, the telescopic electromagnet and the sonic sensor probe are all arranged at the forward end of the movable support plate, and the probe of the tension detector is connected to the telescopic electromagnet; The tension adjustment module includes a tension adjustment plate, a tension adjustment screw and a driving mechanism. The tension adjustment plate is connected to the main roller pulley. The driving mechanism can drive the rotation of the tension adjustment screw to drive the longitudinal displacement of the tension adjustment plate and the main roller pulley to adjust the tightness of the main roller belt.
2. The belt tension control system according to claim 1, characterized in that: The driving mechanism is a tensioning motor, and the tensioning motor is provided with a tensioning motor brake for braking the tensioning motor.
3. The belt tension control system according to claim 1, characterized in that: The tension detection module also includes a forward and backward motor and a screw guide rail set, and the forward and backward motor controls the movable support plate to move forward or backward on the fixed bottom plate through the screw guide rail set.
4. The belt tension control system according to claim 3, characterized in that: The tension detection module further includes a limit switch, and the limit switch is used to send a signal when the tension detection module moves to a preset position. When the control module receives the signal, it controls the forward and backward motor to stop.
5. The belt tension control system according to claim 1, characterized in that: The tension detection module further includes a limiting component, which is disposed on the fixed bottom plate and includes at least one forward limiting block and at least one backward limiting block.
6. The belt tension control system according to claim 1, characterized in that: The tension detection module further comprises an elastic member, and the elastic member is arranged at either end of the telescopic electromagnet.
7. The belt tension control system according to claim 6, characterized in that: The elastic member is a spring.
8. The belt tension control system according to claim 1, characterized in that: The control module includes a PLC controller and a touch screen display. The PLC controller is used to receive the measurement data of the tension detection module and control the operation of the tension adjustment module according to a preset algorithm. The touch screen display is used to display the measurement data and an operation interface.
9. A belt tension control method, characterized in that: The following steps are involved: S10. Fix the fixed base plate in the belt tension control system according to any one of claims 1 to 8 to the body of the NTC wire cutting machine, and install and debug the control module; S20. Adjust the tension on the tension detector to the standard tension; S30. The movable support plate is controlled to move in the forward direction by the control module. After power is turned on, under the action of the telescopic electromagnet, when the probe of the tension detector touches the main roller belt, a first sound wave is generated. When the sound wave sensing probe senses the first sound wave, it sends a signal to the control module. After receiving the signal, the control module shuts down the system. After power is turned off, the movable support plate stops moving, and the iron core of the telescopic electromagnet hits the main roller belt to generate a second sound wave. The probe of the tension detector connected to the iron core senses the second sound wave, and the tension detector displays the detected tension. S40. Compare the standard tension with the detection tension. If the detection tension is not equal to the standard tension, start the driving mechanism through the control module. The driving mechanism drives the tension adjustment screw to rotate, so as to drive the tension adjustment plate to move longitudinally, and drive the main roller pulley to move longitudinally, so as to adjust the tightness of the main roller belt.
10. An NTC wire cutting machine, characterized in that: It includes a belt tension control system, which includes a tension detection module, a tension adjustment module and a control module. The tension detection module is arranged on the body of the NTC wire cutting machine, and the tension adjustment module is arranged on the main roller pulley of the NTC wire cutting machine. The tension detection module is used to detect the tension of the main roller belt on the NTC wire cutting machine, and the tension adjustment module is used to adjust the tightness of the main roller belt. The control module is used to control the operation of the tension detection module and the tension adjustment module: The tension detection module includes a fixed bottom plate, a movable support plate, a tension detector, a telescopic electromagnet and a sonic sensor probe, wherein the movable support plate is slidably connected to the fixed bottom plate, and the movable support plate can move along the forward or backward direction of the fixed bottom plate, the tension detector, the telescopic electromagnet and the sonic sensor probe are all arranged at the forward end of the movable support plate, and the probe of the tension detector is connected to the telescopic electromagnet; The tension adjustment module includes a tension adjustment plate, a tension adjustment screw and a driving mechanism. The tension adjustment plate is connected to the main roller pulley. The driving mechanism can drive the rotation of the tension adjustment screw to drive the longitudinal displacement of the tension adjustment plate and the main roller pulley to adjust the tightness of the main roller belt.