A device for resetting a size sensor of a reeling machine and a delay method using the same

Abstract

The application relates to a reeling technology field, in particular to a reeling machine fineness sensor reset device and a delay method adopting the device. The reset device comprises an exploration sheet, a stop adding rod and a sensor, the middle part of the exploration sheet is connected with a reeling machine rack, the top part is provided with an inner arc section, an outer arc section and a mechanical reset cam; the stop adding rod is arranged above the exploration sheet, the middle part is connected with the reeling machine rack, the front side is provided with a lifting rod for matching the thin rod of the sensor, and the rear side is provided with a reset structure matched with the mechanical reset cam. A method for delaying a reeling machine exploration period by adopting the device is also provided. Compared with the prior art, the application has the advantages that: 1 the time for the sensor to sense the silk strip is intelligently controlled, the sensing accuracy and stability are improved; 2 the mechanical reset device is designed, the sensor is released in the exploration period, and the influence of adding the silk on the fineness is reduced; and 3 the raw silk fineness deviation quality is improved.

Description

Technical Field

[0001] This invention relates to the field of silk reeling technology, specifically to a resetting device for a fineness sensor of a silk reeling machine and a delay method using the device. Background Technology

[0002] The sensing theory of current reeling machines is based on the lever balance equation, F1·L1=F2·L2, and the addition of silkworm cocoons occurs when the balance on both sides of the equation is broken. This equation only reflects the static state of the sensor and cannot reflect the changes in friction between the silk and the sensor at different linear velocities. Currently, all reeling machine platforms use a linkage between the stop lever and the sensor's stop lever; when the stop lever jumps up, the sensor immediately disconnects from sensing the diameter of the silkworm cocoon, and when the stop lever resets, the sensor immediately enters the sensing state.

[0003] This method causes the sensor to misjudge the low linear speed of the filament, resulting in coarse streaks on the filament. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art, enabling the sensor to delay for one exploration cycle before re-entering the sensing state when resetting the stop lever, and simultaneously possessing an automatic reset device for the sensor of a silk reeling machine with both numerical control and mechanical control.

[0005] To achieve the above objectives, an automatic reset device for the sensor of a silk reeling machine compatible with both CNC and analog control is designed. The device includes an exploration plate, a stop rod, and a sensor. The exploration plate is connected to the frame of the silk reeling machine via a rotating shaft in its middle. Utilizing the existing structure of the exploration plate, an inner arc segment is provided on the front side of the top of the exploration plate, and an outer arc segment is provided on the rear side of the inner arc segment. A raised mechanical reset cam is added to the rear side of the outer arc segment of the existing exploration plate. The stop rod is positioned above the exploration plate and is connected to the silk reeling machine frame via a rotating shaft in its middle. A lifting rod is provided on the front side of the stop rod to cooperate with the thin rod of the sensor. A reset structure is provided on the rear side of the stop rod, which cooperates with the mechanical reset cam of the exploration plate. After the stop rod is limited by the limiting structure, the lifting rod on the front side restricts the sensor, and the sensor is in an inactive state. The exploration plate performs a reciprocating arc motion until the mechanical reset cam drives the reset structure of the stop rod to release the restriction of the limiting structure, thus delaying one exploration cycle of the silk reeling machine.

[0006] Preferably, the rear side of the stop rod of the present invention is arc-shaped, and the arc surface of the stop rod is provided with a matching elastic body. The elastic body, as a limiting structure, restricts the movement of the stop rod through friction or other forces to restrain the sensor from resetting.

[0007] Preferably, the limiting structure of the present invention is an electromagnet push rod and a coil wound on the electromagnet push rod. A connecting rod is provided on the rear side of the stop rod. One end of the connecting rod is a CNC reset pin position, which cooperates with the electromagnet push rod. The lower end of the connecting rod is a mechanical reset pin position, which cooperates with the mechanical reset cam of the exploration plate. When the electromagnet push rod is energized to generate magnetic force, it pushes the pin on the CNC reset pin position of the connecting rod to release the limiting movement of the stop rod.

[0008] Preferably, in this invention, when the reset pin is moved to the CNC reset position, according to the momentum formula F·t=m·v, when V 丝 When the set value is reached, the electromagnet pusher pushes the reset pin on the stop rod, causing the sensor to enter the working state.

[0009] Preferably, the present invention further includes several speed acquisition devices. These speed acquisition devices consist of several sensors mounted on the drum of the silk reeling machine and sensors mounted on the side of the drum. When the drum rotates, a microcontroller acquires pulse signals to calculate the linear velocity of the silk. When the linear velocity V of the silk... 丝 When the set speed is reached, the limit structure is controlled to release the stop lever.

[0010] Preferably, the present invention has two working positions on the rear side of the stop rod: one is a CNC reset position and the other is a simulated reset position.

[0011] This invention also provides a method for delaying one exploration cycle of a silk reeling machine using an automatic reset device for the sensor of a silk reeling machine that is compatible with both CNC and analog systems. The method is as follows: When the stop lever is reset, the brake of the sensor platform is released, and the small lever is slowly rotated with the small lever transmission rod under the action of friction. At this time, the stop lever binds the sensor to the upper position of the sensing frame under the action of the limiting structure, and does not sense the silk diameter. A mechanical reset cam is installed on the exploration piece, and it makes a reciprocating arc motion under the action of the exploration linkage. When the exploration piece moves forward to perform the exploration action, when the mechanical reset cam on the exploration piece reaches the set position, the mechanical reset cam pushes the reset pin on the stop lever, breaking the constraint of the limiting structure, releasing the sensor to move downward, so that the thin limit lever of the sensor falls on the outer arc of the exploration piece, thereby losing one working process of sensing the silk diameter. When the reciprocating exploration piece retracts, the thin limit lever of the sensor falls back to the inner arc of the exploration piece. At this time, the sensor truly enters the working state of sensing the silk diameter after a delay of one exploration cycle.

[0012] Preferably, the fineness sensor of the silk reeling machine of the present invention is released using a numerical control method. When the reset stop lever is activated, the small lever rotates slowly, driving the drum to rotate. The linear velocity of the silk is obtained by measuring the rotational speed of the drum. According to the momentum theorem F×t=m×V, when the linear velocity of the silk V... 丝When the set value is reached, the friction between the wire and the sensor also reaches the set value. At this time, the electromagnet pushes the stop lever to release the sensor and enter the working state.

[0013] Compared with the prior art, the advantages of this invention are:

[0014] 1. Intelligent Control: By applying the momentum theorem F·t=m·v, intelligent control is achieved for the timing of the sensor's detection of the wire. By collecting the rotational speed of the small valve, calculating the linear velocity of the wire, and releasing the electromagnet at the appropriate time, the sensing is ensured to occur when the wire's linear velocity is normal, thus improving the accuracy and stability of the sensing.

[0015] 2. Mechanical Simulation Reset: A simulation reset device was designed. Through the cooperation of the cam and the reset pin paddle, the sensor was released with a delay during the exploration cycle, which further reduced the impact on fineness during threading.

[0016] 3. Fineness control: By precisely controlling the sensing and resetting timing of the sensor, effective control of the fineness of the filament is achieved, which helps to improve the quality of raw silk fineness deviation. Attached Figure Description

[0017] Figure 1 1. Schematic diagram of the sensor reset delay mechanism;

[0018] Figure 2 A schematic diagram of the reset pin of the stop rod in the CNC reset position;

[0019] Figure 3 A schematic diagram of the reset pin of the stop rod in the mechanical reset position;

[0020] Figure 4 1. A schematic diagram of the speed acquisition device.

[0021] Figure 5 1. Description of each workstation in the exploration film;

[0022] Figure 6 A schematic diagram showing the sensor rod resting on the outer arc of the exploration piece;

[0023] Figure 7 A schematic diagram showing the sensor rod resting on the inner arc of the exploration piece.

[0024] In the diagram: 101 Exploration piece; 102 Outer arc of exploration piece; 103 Inner arc of exploration piece; 104 Center of rotation of exploration piece; 105 Mechanical reset cam; 106 Spring plate; 107 CNC reset pin position; 108 Mechanical reset pin position; 109 Electromagnet push rod; 110 Coil; 111 Reciprocating drive shaft; 112 Sensor rod; 113 Stop rod; 301 Sensor; 302 Sensor element; 303 Drum wheel. Detailed Implementation

[0025] To make the purpose, principle and structure of the present invention clearer, the following description is provided in conjunction with the accompanying drawings and specific embodiments.

[0026] Example 1:

[0027] This embodiment provides an automatic reset device for the sensor of a silk reeling machine that uses simulation (mechanical) technology.

[0028] See Figure 1 The device in this embodiment includes an exploration plate, a stop rod, and a sensor. The exploration plate is connected to the silk reeling machine frame via a rotating shaft in the middle. The top front side of the exploration plate 101 has an inner arc segment 103, and the rear side of the inner arc segment 103 has an outer arc segment 102. The rear side of the outer arc segment 102 has a protruding mechanical reset cam 105. The stop rod 113 is located above the exploration plate 101 and is connected to the silk reeling machine frame via a rotating shaft in the middle. The front side of the stop rod 113 has a lifting rod. A thin rod 112 is used to cooperate with the sensor. The rear side of the stop rod 113 is provided with a reset structure, which cooperates with the mechanical reset cam 105 of the exploration plate 101. After the stop rod 113 is limited by the limiting structure, the lifting rod on the front side restricts the sensor, and the sensor is in a non-working state. The exploration plate 101 performs a reciprocating arc motion until the mechanical reset cam 105 drives the stop rod reset structure to release the restriction of the limiting structure, thus delaying one exploration cycle of the silk reeling machine. The rear side of the stop rod 113 is arc-shaped, and the arc surface of the stop rod is provided with a cooperating elastic body. The elastic body acts as a limiting structure to restrict the movement of the stop rod through friction.

[0029] In terms of specific working methods:

[0030] When the stop lever is reset, the brake on the sensor platform releases the small brake, and the small lever slowly rotates with the small lever transmission rod under the action of friction. At this time, the rear arc surface of the stop lever 113 cannot rotate due to friction with the spring plate 106, and the sensor and the stop lever cannot be linked because the stop lever 113 is limited.

[0031] A mechanical reset cam 105 is installed on the exploration plate 101, which performs a reciprocating circular arc motion under the action of the exploration linkage. When the exploration plate 101 moves forward to perform an exploration action, when it is necessary to restore the linkage between the sensor and the stop lever, the mechanical reset cam 105 on the exploration plate 101 is controlled to strike the mechanical reset pin 108, causing the stop lever 113 to overcome the friction between itself and the spring plate 106, causing the stop lever 113 to rotate, releasing the sensor rod on the stop lever 113, and restoring the linkage between the sensor and the stop lever.

[0032] It is worth noting that:

[0033] This embodiment firstly utilizes the momentum theorem F·t=m·v to control the timing of the sensor's contact with the silk thread. In this formula, F represents the frictional force between the silk thread and the sensor; t is the duration of the frictional force, a set value determined by the exploration cycle; m is the constant mass of the sensor; and v is the linear velocity of the silk thread. From the formula, it can be seen that during normal silk reeling, the linear velocity V of the silk thread is equal to the velocity of the outer circumference of the small diameter. During normal silk reeling, F (the frictional force between the silk thread and the sensor) is positively correlated with the diameter of the silk thread. That is, the frictional force increases when the silk thread diameter increases and decreases when the silk thread diameter decreases. The frictional force F and the linear velocity v of the silk thread are two variables on both sides of the formula and exhibit a positive correlation. Because the mass m of the sensor on one side of the formula is a constant value, and the contact time t between the sensor and the silk thread on the other side is a set value. Therefore, it can be concluded that a correct frictional force F between the filament and the sensor can only be obtained when the linear velocity v of the filament is stable. A correct frictional force allows the sensor to determine whether the diameter of the filament has reached the fineness limit of the filament.

[0034] In actual production, when the worker resets the stop lever, the sensor is immediately released and reset to its working position, starting operation. This is because the stop lever and the sensor's stop lever are linked. Furthermore, because the small spool and the drive shaft are driven by friction, the spool's rotational speed gradually increases. This causes the linear velocity of the silk thread to not reach the normal working linear velocity, while the sensor enters the sensing state. From F·t=m·v, we can deduce that since the mass m is a constant value and time t is a set constant value, when the linear velocity v decreases, the frictional force F decreases. Because the decrease in frictional force causes the sensor to send a cocoon-adding signal, the silk thread diameter is too large. Therefore, at low linear speeds, the frictional force between the silk thread and the sensor cannot accurately reflect the correct silk thread diameter. Therefore, it is unreasonable for the sensor to immediately resume its working state when the stop lever is reset.

[0035] The mechanical simulation reset device operates by having the small chuck enter the working state when the stop lever is reset. After approximately 2-3 seconds of sensor exploration cycle time, the chuck's rotational speed essentially returns to normal. At this point, the sensor is released, and the chuck enters the sensing state. The sensor can accurately detect the diameter of the wire. Mechanically, the time when the sensor detects the wire is delayed by one exploration cycle from the time the stop lever is reset. When the stop lever jumps up, it simultaneously lifts the stop rod upwards, disconnecting the sensor's sensing of the wire.

[0036] Example 2:

[0037] This second embodiment provides an automatic reset device for the sensor of a silk reeling machine using numerical control.

[0038] See Figure 1Its structure differs from that of Embodiment 1 in that when the reset lever is moved from the mechanical reset position 108 to the CNC reset position 107, the mechanical reset cam and the reset lever head, which serve as the reset mechanism, are no longer engaged on the rear side of the exploration plate. The arc surface on the rear side of the stop lever still engages with the elastic body. According to the momentum formula F·t=m·v, when V 丝 When the set value is reached, the arc coil 110 receives an electrical signal and pushes the push rod 109, which in turn pushes the tree hole reset tip 107 in the CNC reset position. This releases the elastic body 106 from the stop rod 113, allowing the sensor to enter the working state. Several speed acquisition devices are also included, see... Figure 4 The speed acquisition device consists of several sensors 302 mounted on the drum 303 of the silk reeling machine, and sensors 301 mounted on the side of the drum. When the drum 303 rotates, a microcontroller collects pulse signals to calculate the linear velocity of the silk. When the linear velocity V of the silk reaches a certain value, the sensor detects the linear velocity of the silk. 丝 When the set speed is reached, the limit structure is controlled to release the stop lever 113.

[0039] In terms of specific working methods:

[0040] When the stop lever is reset, the brake on the sensor platform releases the small brake, and the small lever rotates slowly with the small lever transmission rod under the action of friction. At this time, the rear side of the stop lever 113 is limited by the action of the elastic body, and the sensor and the stop lever cannot be linked because the stop lever 113 is limited.

[0041] When it is necessary to restore the linkage between the sensor and the stop lever, the coil 110 is energized, and the electromagnetic push rod 109 pushes the CNC reset head 107, causing the stop lever 113 to rotate, releasing the sensor on the stop lever 113 and restoring the linkage between the sensor and the stop lever.

[0042] It is worth noting that:

[0043] In this second embodiment, a sensor is installed on the drum, with sensors positioned at corresponding locations on the drum to collect the drum's rotational speed signal. The microcontroller then calculates the linear velocity of the wire. When the wire's linear velocity approaches or reaches a reasonable value, the microcontroller sends a signal to restore the sensor's operating state. An electromagnet then pushes the CNC reset lever on the stop lever to release the sensor. At this point, because the linear velocity has approached or reached the operating state, the diameter of the wire sensed by the sensor is consistent with the normal operating state, and there is no issue of the wire diameter being too thick.

[0044] Example 3:

[0045] The above embodiments one and two can be simultaneously set and applied to the stop lever 113 and the exploration plate 101, see Figure 2 , Figure 3Two working positions are provided on the rear side of the stop lever 113: one is a CNC reset position and the other is a mechanical reset position, which realizes the control of the linkage state between the sensor and the stop lever, and provides both CNC and analog control methods.

[0046] Example 4:

[0047] The limiting function of the limiting structure in the above embodiments one, two and three can also be achieved by gravity. The stopping rod hangs down by its own weight, so that the sensing rod 112 is limited when the reeling machine has not reached the set linear speed.

[0048] Example 5:

[0049] This embodiment provides a method for delaying one exploration cycle of a silk reeling machine using an automatic reset device for the sensor of a silk reeling machine that is compatible with both CNC and analog systems. The method is as follows: When the stop lever is reset, the brake of the sensor platform is released, and the small lever is slowly rotated with the small lever transmission rod under the action of friction. At this time, the stop lever binds the sensor to the upper position of the sensing frame under the action of the limiting structure, and does not sense the silk diameter. A mechanical reset cam is installed on the exploration piece, and it makes a reciprocating arc motion under the action of the exploration linkage. When the exploration piece moves forward to perform the exploration action, when the mechanical reset cam on the exploration piece reaches the set position, the mechanical reset cam pushes the reset pin on the stop lever, breaking the constraint of the limiting structure, releasing the sensor to move downward, so that the thin limit lever of the sensor falls on the outer arc of the exploration piece, thereby losing one working process of sensing the silk diameter. When the reciprocating exploration piece retracts, the thin limit lever of the sensor falls back to the inner arc of the exploration piece. At this time, the sensor truly enters the working state of sensing the silk diameter after a delay of one exploration cycle. The fineness sensor of the silk reeling machine is released using a numerical control method. When the reset stop lever is activated, the small lever rotates slowly, driving the drum to rotate. The linear velocity of the silk is obtained by measuring the rotational speed of the drum. According to the momentum theorem F×t=m×V, when the linear velocity of the silk V... 丝 When the set value is reached, the friction between the wire and the sensor also reaches the set value. At this time, the electromagnet pushes the stop lever to release the sensor and enter the working state.

[0050] Controlling the linkage between the sensor and the stop lever releases the sensor's downward movement, causing the sensor's thin rod 112 to land on the outer arc 102 of the probe plate 101, thus losing one cycle of sensing the wire diameter. When the reciprocating probe plate 101 retracts, the sensor's thin rod 112 falls back onto the inner arc 103 of the probe plate 101. At this point, the sensor truly enters the working state of sensing the wire diameter after a delay of one exploration cycle. Thus, after a delay of one exploration cycle, the rotational speed of the stop lever accelerates from zero at startup to normal speed. At this point, the wire diameter sensed by the sensor is correct.

[0051] The above description is merely a specific embodiment of the invention, but the scope of protection of the invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in the invention, based on the technical solutions and novel concepts of the invention, should be covered within the scope of protection of the invention.

Claims

1. An automatic reset device for a sensor in a silk reeling machine compatible with both CNC and analog control, comprising an exploration plate, a stop lever, and a sensor, characterized in that... The exploration piece is connected to the silk reeling machine frame in the middle via a rotating shaft. The top front side of the exploration piece is provided with an inner arc segment, the rear side of the inner arc segment is provided with an outer arc segment, and the rear side of the outer arc segment is provided with a protruding mechanical reset cam. The stop rod is located above the exploration plate and is connected to the silk reeling machine frame in the middle via a rotating shaft. The front side of the stop rod is provided with a lifting rod to cooperate with the thin rod of the sensor. The rear side of the stop rod is provided with a reset structure, which cooperates with the mechanical reset cam of the exploration plate. After the stop rod is limited by the limiting structure, the lifting rod on the front side restricts the sensor, and the sensor is in a non-working state. The exploration piece makes a reciprocating arc motion until the mechanical reset cam drives the stop rod reset structure to release the restriction of the limiting structure, thus delaying one exploration cycle of the silk reeling. The rear side of the stop rod is arc-shaped, and the arc surface of the stop rod is provided with a matching elastic body. The elastic body acts as a limiting structure to restrict the movement of the stop rod through friction, thereby restraining the reset of the sensor. The limiting structure consists of an electromagnet push rod and a coil wound around the electromagnet push rod. A connecting rod is provided on the rear side of the stop rod. One end of the connecting rod is a CNC reset pin position, which cooperates with the electromagnet push rod. The lower end of the connecting rod is a mechanical reset pin position, which cooperates with the mechanical reset cam of the exploration plate. When the electromagnet push rod is energized and generates magnetic force, it pushes the pin on the CNC reset pin position of the connecting rod to release the limiting movement of the stop rod.

2. The automatic reset device for the sensor of a silk reeling machine compatible with both CNC and analog control as described in claim 1, characterized in that, When the reset pin is moved to the CNC reset position, according to the momentum formula F·t=m·V, where F is the frictional force between the wire and the sensor; t is the duration of the frictional force between the wire and the sensor; m is the mass of the sensor; and V is the linear velocity of the wire, when V reaches the set value, the electromagnet push rod pushes the CNC reset pin on the stop rod, causing the sensor to enter the working state.

3. The automatic reset device for the sensor of a silk reeling machine compatible with both CNC and analog control as described in claim 1, characterized in that... It also includes several speed acquisition devices. The speed acquisition devices are several sensors installed on the drum of the silk reeling machine and sensors installed on the side of the drum. When the drum rotates, the microcontroller collects pulse signals to calculate the linear speed of the silk. When the linear speed V of the silk reaches the set speed, it controls the limit structure to release the stop rod.

4. The automatic reset device for the sensor of a silk reeling machine compatible with both CNC and analog control as described in claim 1, characterized in that... There are two working positions on the rear side of the stop lever: one is the CNC reset position, and the other is the analog reset position.

5. A method for delaying one exploration cycle of a silk reeling machine using an automatic reset device for the sensor of a silk reeling machine as described in any one of claims 1-2, characterized in that... The method is as follows: When the stop lever is reset, the brake of the sensor platform is released, and the small lever rotates slowly with the small lever transmission rod under the action of friction. At this time, the stop lever binds the sensor to the upper position of the sensing frame under the action of the limiting structure, and does not perform the sensing of the wire diameter. A mechanical reset cam is installed on the exploration piece, and it makes a reciprocating arc motion under the action of the exploration linkage. When the exploration piece moves forward to perform the exploration action, when the mechanical reset cam on the exploration piece reaches the set position, the mechanical reset cam pushes the reset pin on the stop lever, breaks the constraint of the limiting structure, releases the sensor to move downward, so that the thin limit lever of the sensor falls on the outer arc of the exploration piece, thus losing one working process of sensing the wire diameter. When the reciprocating exploration piece retracts, the thin limit lever of the sensor falls back to the inner arc of the exploration piece. At this time, the sensor truly enters the working state of sensing the wire diameter after a delay of one exploration cycle.

6. The method for one exploration cycle of a delayed silk reeling machine as described in claim 5, characterized in that... The fineness sensor of the silk reeling machine is released using a numerical control method. When the reset stop lever is activated, the small lever rotates slowly, driving the drum to rotate. The linear velocity of the silk is obtained by measuring the rotational speed of the drum. According to the momentum theorem F×t=m×V, where F is the frictional force between the silk and the sensor; t is the duration of the frictional force between the silk and the sensor; m is the mass of the sensor; and V is the linear velocity of the silk. When the linear velocity V of the silk reaches the set value, the frictional force between the silk and the sensor also reaches the set value. At this time, the electromagnet pushes the stop lever to release the sensor and enter the working state.

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