Emergency brake mechanism for a two-for-one twister and method of controlling the same

Abstract

The application discloses an emergency braking mechanism of a double twister, which comprises a mounting frame, a swing frame, a first driving assembly, a second driving assembly, a detection assembly and a switch assembly. The detection assembly comprises a rotating roller and a sensor. Yarn passes through the surface of the rotating roller before being collected on a yarn drum. The sensor is used for sensing whether the rotating roller rotates. The application can brake the rotation of the yarn drum immediately when an abnormal state occurs, so as to prevent the yarn on the yarn drum from flying and improve the safety of a work site.

Description

Technical Field

[0001] This invention relates to the technical field of double twisters, and particularly to an emergency braking mechanism for a double twister and its control method. Background Technology

[0002] A doubling machine is a device that processes and bonds multiple single yarns into a strand. A doubling machine typically includes a frame, a twisting section, a winding and forming section, and a take-up section. The twisting section is used to twist the yarn, the winding and forming section is used to wind the yarn into shape, and the take-up section is used to collect the formed yarn.

[0003] If the yarn suddenly stops during the take-up process, the yarn bobbin will continue to rotate, causing the yarn to detach from the bobbin and fly off. If the flying yarn gets caught in the rotating parts of the twisting machine, it may damage the machine and pose a safety hazard. Summary of the Invention

[0004] One of the objectives of this invention is to provide an emergency braking mechanism for a twisting machine that can immediately brake the rotation of the yarn bobbin when the yarn suddenly stops, so as to prevent the yarn on the yarn bobbin from flying off and improve the safety of the work site.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] An emergency braking mechanism for a doubling twister includes:

[0007] The mounting bracket is provided with a mounting shaft, and the mounting bracket has a first contact point and a second contact point;

[0008] A swing frame, wherein one end of the swing frame is a rotating end and the other end is a swinging end, the rotating end is rotatably connected to the mounting shaft of the mounting frame, and the swinging end is the end of the swing frame away from the mounting frame, and the swing frame is capable of swinging between the first contact point and the second contact point;

[0009] A first drive assembly is used to drive the swing frame to swing between the first contact point and the second contact point;

[0010] The second drive assembly has its output end located at the swing end of the swing frame and is equipped with a yarn bobbin, on which the twisted yarn is collected.

[0011] The detection component includes a rotating roller and a sensor. After the yarn passes through the surface of the rotating roller, it is collected on the yarn bobbin. The sensor is used to sense whether the rotating roller is rotating.

[0012] A switch assembly is disposed between the swing frame and the first contact point, the switch assembly being used to connect the second drive assembly to the power supply;

[0013] When the sensor detects that the rotating roller has stopped rotating, the first drive assembly drives the swing frame to swing from the first contact point to the second contact point, so that the switch assembly disconnects the electrical connection between the second drive assembly and the power supply; when the sensor detects that the rotating roller is rotating, the swing frame remains in contact with the first contact point, so that the switch assembly maintains the electrical connection between the second drive assembly and the power supply.

[0014] Preferably, the first drive assembly includes a first drive motor, a swing gear, and a torsion member. The swing gear is rotatably connected to the mounting shaft and connected to the swing frame. The first drive motor is used to drive the swing gear to rotate. The torsion member is sleeved outside the mounting shaft, with one end connected to the swing gear and the other end connected to the swing frame.

[0015] Preferably, when the swing frame remains in contact with the first contact point, the torsion member is in a pre-tightened state, and the pre-tightening force of the torsion member has a tendency to drive the swing frame to continue to press against the first contact point, so as to make the switch assembly tightly connected.

[0016] Preferably, the switch assembly includes a first contact and a second contact. The first contact is located at the point where the swing frame contacts the first contact point. The first contact is electrically connected to the second drive assembly. The second contact is located at the first contact point and is connected to a power supply point.

[0017] When the swing frame contacts the first contact point, the first contact contacts the second contact, thereby electrically connecting the second drive assembly to the power supply.

[0018] Preferably, the rocker arm has a first stop block on the side facing the rocker gear, and the rocker gear has a second stop block on the side facing the rocker arm. The horizontal distance between the first stop block and the first contact point is greater than the horizontal distance between the second stop block and the first contact point.

[0019] Preferably, the second drive assembly includes a second drive motor, a drive gear, and a driven gear. The second drive motor is connected to the swing frame, the drive gear is disposed on the output shaft of the second drive motor, the output shaft is rotatably connected to the swing frame, the driven gear is fixedly sleeved on the output shaft, the drive gear meshes with the driven gear, and the output shaft is the output end of the second drive assembly.

[0020] Preferably, the output shaft is a cylindrical structure with openings at both ends. An inner support assembly is provided inside the output shaft. The inner support assembly includes an outer sleeve and an inner rotating ring. The outer sleeve is coaxially inserted into the output shaft, and the inner rotating ring is coaxially rotatably connected inside the outer sleeve. An avoidance ring groove is provided on the outer wall of the inner rotating ring. At least two top-supporting inclined surfaces are distributed along the circumference of the inner rotating ring within the avoidance ring groove. At least two pin holes are provided on the side wall of the outer sleeve, spaced apart along the circumference of the outer sleeve. An inner support pin slides through each pin hole. The inner support pin corresponds one-to-one with the top-supporting inclined surface. One end of the inner support pin located inside the outer sleeve abuts against the top-supporting inclined surface. At least two through holes are provided on the side wall of the output shaft, spaced apart along the circumference of the output shaft. The through holes correspond one-to-one with the inner support pins.

[0021] Preferably, the output shaft is provided with a twist handle, the twist handle has an insertion part, the inner rotating ring is provided with a docking hole, the insertion part is adapted to the docking hole, and the end of the insertion part away from the inner rotating ring is located outside the output shaft.

[0022] Preferably, the rotating roller includes a roller body and a plurality of magnetic blocks arranged at intervals along the circumference of the roller body, and the sensor is a Hall sensor, with the detection end of the Hall sensor facing the end of the roller body where the magnetic blocks are mounted.

[0023] The second objective of this invention is to provide a control method for an emergency braking mechanism of a twisting machine, which can immediately brake the rotation of the yarn bobbin when the yarn suddenly stops, so as to prevent the yarn on the yarn bobbin from flying away and improve the safety of the work site.

[0024] To achieve the above objectives, the present invention provides the following technical solution:

[0025] A control method for an emergency braking mechanism of a twisting machine, the emergency braking mechanism of the twisting machine including a mounting frame, a swing frame, a first drive assembly, a second drive assembly, a detection assembly, and a switching assembly, the detection assembly including a rotating roller and a sensor, the yarn passing over the surface of the rotating roller before being collected onto the yarn bobbin, the sensor being used to sense whether the rotating roller is rotating, the control method of the emergency braking mechanism of the twisting machine including:

[0026] The sensor is used to determine whether the rotating roller is rotating;

[0027] If the sensor detects that the rotating roller has stopped rotating, the first drive assembly drives the swing frame to swing from the first contact point to the second contact point, so that the switch assembly disconnects the electrical connection between the second drive assembly and the power supply.

[0028] When the sensor detects that the rotating roller is rotating, the swing frame remains in contact with the first contact point so that the switching assembly maintains the electrical connection between the second drive assembly and the power supply.

[0029] Compared with existing technologies, the above technical solution has the following advantages:

[0030] 1. By setting the detection component, the rotation of the yarn bobbin can be braked immediately in the event of an abnormal condition to prevent the yarn on the bobbin from flying away and improve the safety of the work site.

[0031] 2. When the swing frame is in contact with the first contact point, the torsion member is in a pre-tightened state. The pre-tightening force of the torsion member tends to drive the swing frame to continue to press against the first contact point so that the switch assembly is tightly connected.

[0032] 3. When installing a yarn bobbin on the output shaft, the yarn bobbin is fitted onto the shaft through its opening at one end. The operator then rotates the inner rotating ring clockwise, causing the inner support pin to gradually contact the highest point of the top support slope. At this point, the return spring is compressed. When the inner support pin approaches the highest point of the top support slope, it protrudes from the orifice and presses against the inner wall of the yarn bobbin. This pressing action of the inner support pin secures the yarn bobbin to the output shaft. When removing the yarn bobbin from the output shaft, the operator rotates the inner rotating ring counterclockwise. Under the elastic force of the return spring, the inner support pin fully enters the orifice, releasing the pressure of the inner support pin on the yarn bobbin. The operator can then remove the yarn bobbin. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0034] Figure 1 This is a structural diagram illustrating the emergency braking mechanism of a twisting machine.

[0035] Figure 2 This is another structural schematic diagram illustrating the emergency braking mechanism of the twisting machine.

[0036] Figure 3 This is a schematic diagram illustrating the structure when the swing end comes into contact with the first contact point.

[0037] Figure 4 This is a schematic diagram illustrating the structure when the swing end comes into contact with the second contact point.

[0038] Figure 5 It is a diagram showing the transmission relationship between the second drive component and the output shaft.

[0039] Figure 6 It is a cross-sectional view showing the internal structure of the output shaft.

[0040] Figure 7 It is a manifestation Figure 6 Enlarged view of part A in the middle.

[0041] Figure 8 This is a schematic diagram illustrating the structure of the detection component.

[0042] Figure 9 This is a flowchart illustrating the control method of the emergency braking mechanism of a doubling twister.

[0043] Explanation of reference numerals in the attached drawings: 1. Mounting bracket; 101. Mounting shaft; 102. First contact point; 103. Second contact point; 104. Side baffle; 2. Swing frame; 201. Rotating end; 202. Swinging end; 203. First stop block; 3. First drive assembly; 301. First drive motor; 302. Swing gear; 3021. Second stop block; 303. Torsional element; 3031. Elastic part; 3032. First end; 3033. Second end; 304. Drive gear; 4. Second drive assembly; 401. Second drive motor; 402. Driving gear; 403. Driven gear; 404. Output shaft; 4041. Left half shaft; 4042. Right half shaft; 4043. Through hole; 5. Detection assembly; 501, Rotating roller; 5011, Roller body; 50111, Inner spindle; 50112, Outer rotating roller; 50113, Fixed end; 50114, Suspended end; 5012, Magnetic block; 502, Sensor; 601, First contact; 602, Second contact; 7, Yarn bobbin; 8, Inner support assembly; 801, Outer sleeve; 8011, Pin hole; 80111, Large inner diameter section; 80112, Small inner diameter section; 802, Inner rotating ring; 8021, Avoidance ring groove; 8022, Top support inclined surface; 8023, Connecting hole; 803, Inner support pin; 804, Plug; 805, Sliding ring; 806, Reset spring; 807, Twist handle; 8071, Rotating part; 8072, Insertion part; 808, Fastening bolt. Detailed Implementation

[0044] This invention discloses an emergency braking mechanism for a twisting machine, which can immediately brake the rotation of the yarn bobbin 7 when the yarn suddenly stops, so as to prevent the yarn on the yarn bobbin 7 from flying away and improve the safety of the work site.

[0045] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0046] See Figure 1 The emergency braking mechanism for a twisting machine disclosed in this invention includes a mounting frame 1, a swing frame 2, a first drive assembly 3, a second drive assembly 4, a detection assembly 5, and a switch assembly.

[0047] See Figure 1 The mounting frame 1 is connected to the frame of the twisting machine and is located at the end of the yarn twisting process, that is, the process of collecting the yarn at the end of the twisting machine using the yarn bobbin 7 after the yarn has been twisted. The connection between the mounting frame 1 and the frame of the twisting machine can be a fixed connection, such as welding, or a detachable connection, such as bolt connection.

[0048] See Figure 1 and Figure 2 The mounting frame 1 is provided with a mounting shaft 101, which is fixedly connected to the mounting frame 1. The mounting frame 1 has a first contact point 102 and a second contact point 103. The line connecting the first contact point 102 and the axis of the mounting shaft 101 on the horizontal plane and the line connecting the second contact point 103 and the axis of the mounting shaft 101 on the horizontal line form a swing angle A. The swing angle A can be set to any angle as required.

[0049] See Figures 1-4 In one embodiment, a side baffle 104 is fixedly connected to the mounting bracket 1. Two side baffles 104 are fixedly connected to the mounting bracket 1 respectively. The first contact point 102 is provided on one of the side baffles 104, and the second contact point 103 is provided on the other side baffle 104.

[0050] See Figures 1-4 One end of the swing frame 2 is a rotating end 201, and the other end is a swinging end 202. The rotating end 201 is rotatably connected to the mounting shaft 101 via a bearing. The swinging end 202 is the end of the swing frame 2 away from the mounting frame 1. Specifically, the swinging end 202 of the swing frame 2 can swing in the area between the two side baffles 104, that is, it can swing between the first contact point 102 and the second contact point 103. The swing frame 2 can swing between the first contact point 102 and the second contact point 103, that is, the swing frame 2 can swing within a fan-shaped range limited by the swing angle A.

[0051] See Figures 1-4The first drive assembly 3 is used to drive the swing end 202 of the swing frame 2 to swing around the mounting shaft 101 between the first contact point 102 and the second contact point 103.

[0052] See Figures 1-4 In one embodiment, the first drive assembly 3 includes a first drive motor 301, a swing gear 302, and a torsion member 303. The swing gear 302 is rotatably connected to the mounting shaft 101 via a bearing. The torsion member 303 is sleeved outside the mounting shaft 101 and is located between the swing gear 302 and the swing frame 2. One end of the torsion member 303 is connected to the swing gear 302, and the other end is connected to the swing frame 2. The swing gear 302 and the swing frame 2 are connected by transmission through the torsion member 303. The first drive motor 301 is used to drive the swing gear 302 to rotate.

[0053] See Figure 1 In one embodiment, the torsion member 303 is a torsion spring, having an elastic portion 3031, a protruding first end 3032, and a protruding second end 3033. The elastic portion 3031 is helical, with the first end 3032 integrally formed at one end of the elastic portion 3031 and the second end 3033 integrally formed at the other end of the elastic portion 3031. A first through hole is provided on the swing gear 302, and a second through hole is provided on the portion of the swing frame 2 near its rotating end 201. The first end 3032 of the torsion member 303 protrudes through the first through hole, and the second end 3033 of the torsion member 303 protrudes through the second through hole. The elastic portion 3031 of the torsion member 303 is sleeved on the mounting shaft 101 and located between the swing gear 302 and the swing frame 2.

[0054] See Figure 1 The first drive motor 301 is connected to the mounting bracket 1. The drive end of the first drive motor 301 is fixed with a drive gear 304, which meshes with the swing gear 302. When the first drive motor 301 rotates, it drives the drive gear 304 to rotate, which in turn drives the swing gear 302 to rotate. The swing gear 302 causes the torsion member 303 to drive the swing end 202 of the swing frame 2 to swing around the mounting shaft 101 toward the first contact point 102.

[0055] See Figure 1 When the swing frame 2 is in contact with the first contact point 102, the torsion member 303 is in a pre-tightened state. The pre-tightening force of the torsion member 303 has a tendency to drive the swing frame 2 to continue to press against the first contact point 102 so that the switch assembly is tightly connected.

[0056] See Figure 1In one embodiment, in order to keep the swing end 202 of the swing frame 2 in contact with the first contact point 102, the torsion member 303 is in a pre-tightened state. The torsion member 303 is in a pre-tightened state at any position between the swing end 202 of the swing frame 2 and the second contact point 103, including when the swing end 202 of the swing frame 2 is in contact with the second contact point 103.

[0057] It should be noted that, in order to ensure that the torsion member 303 is in a pre-tightened state at any position between the first contact point 102 and the second contact point 103 at the swing end 202 of the rocker frame 2, the torsion member 303 is pre-tightened before installation. This ensures that the torsion member 303 is in a pre-tightened state at any position between the first contact point 102 and the second contact point 103 at the swing end 202 of the rocker frame 2. The pre-tightened state refers to the torsion member 303 being in a contracted state, possessing elastic potential energy, and always having a tendency to return to its natural state.

[0058] See Figure 1 A first stop block 203 is fixedly connected to the side of the swing frame 2 facing the swing gear 302, and a second stop block 3021 is fixedly connected to the side of the swing gear 302 facing the swing frame 2. The horizontal distance between the first stop block 203 and the first contact point 102 is greater than the horizontal distance between the second stop block 3021 and the first contact point 102.

[0059] See Figure 1 and Figure 3 When the swing end 202 of the swing frame 2 contacts the first contact point 102, there is a gap between the first stop block 203 and the second stop block 3021, so that the elastic potential energy of the torsion member 303 is applied to the swing frame 2, causing the swing end 202 of the swing frame 2 to press against the first contact point 102.

[0060] See Figure 1 , Figure 2 and Figure 4 When the swing end 202 of the swing frame 2 disengages from the first contact point 102, the first stop block 203 and the second stop block 3021 abut against each other. The second stop block 3021 abuts against the first stop block 203 to push the swing end 202 of the swing frame 2 to swing away from the first contact point 102. At the same time, the second stop block 3021 can restrict the movement of the swing frame 2 and prevent the swing end 202 of the swing frame 2 from contacting the first contact point 102 under the elastic force of the torsion member 303.

[0061] See Figure 2 and Figure 4The switch assembly is located between the swing end 202 of the swing frame 2 and the first contact point 102. The switch assembly is used to connect the second drive assembly 4 to the power supply. The switch assembly includes a first contact 601 and a second contact 602.

[0062] See Figure 2 and Figure 4 The first contact 601 is located at the point where the swing end 202 of the swing frame 2 contacts the first contact point 102. The first contact 601 is electrically connected to the second drive assembly 4. The second contact 602 is located on the first contact point 102 and is electrically connected to the power supply. When the swing frame 2 contacts the first contact point 102, the first contact 601 and the second contact 602 contact each other, thereby electrically connecting the second drive assembly 4 to the power supply.

[0063] Under normal conditions, the swing end 202 of the swing frame 2 is tightly fitted with the first contact point 102 through the pre-tightened torsion member 303, that is, the first contact 601 and the second contact 602 are tightly fitted. At this time, the second drive assembly 4 is in an electrically conductive state, that is, it normally drives the yarn bobbin 7 to perform the winding operation. When the yarn on the twisting machine suddenly breaks, the first drive assembly 3 drives the swing end 202 of the swing frame 2 to disengage from the first contact point 102, that is, the first contact 601 and the second contact 602 disengage. At this time, the second drive assembly 4 is in a de-energized state, and the yarn bobbin 7 stops the winding operation.

[0064] See Figure 1 The output end of the second drive assembly 4 is located at the swing end 202 of the swing frame 2, and a yarn spool 7 is installed thereon. The yarn spool 7 is detachably installed on the output end of the second drive assembly 4. The second drive assembly 4 is used to drive the yarn spool 7 to rotate so that the twisted yarn is collected on the yarn spool 7.

[0065] See Figure 1 and Figure 5 The second drive assembly 4 includes a second drive motor 401, a drive gear 402, and a driven gear 403.

[0066] See Figures 1-5 The first contact 601 is electrically connected to the second drive motor 401, which is connected to the swing frame 2. The swing frame 2 is a hollow shell structure, and the drive end of the second drive motor 401 extends into the swing frame 2. The drive gear 402 is located inside the swing frame 2 and is fixed to the drive end of the second drive motor 401. The drive gear 402 can rotate under the drive of the second drive motor 401.

[0067] See Figure 1 and Figure 5An output shaft 404 is rotatably connected to the rocker frame 2. The output shaft 404 is located at the swing end 202 of the rocker frame 2, and the output shaft passes through the swing end 202 of the rocker frame 2. The output shaft 404 is rotatably connected to the rocker frame 2 via bearings. A driven gear 403 is located inside the rocker frame 2 and is fixedly sleeved on the output shaft 404. The driving gear 402 meshes with the driven gear 403. The output shaft 404 is the output end of the second drive assembly 4.

[0068] See Figure 1 and Figure 5 The yarn bobbin 7 is mounted on the output shaft 404. During the winding process, the second drive motor 401 drives the drive gear 402 to rotate. The drive gear 402 drives the output shaft 404 to rotate through the driven gear 403. The output shaft 404 drives the yarn bobbin 7 to rotate, thereby realizing the winding.

[0069] See Figure 5 and Figure 6 The output shaft 404 is a cylindrical structure with openings at both ends. An inner support assembly 8 is provided inside the output shaft 404. The inner support assembly 8 includes an outer sleeve 801 and an inner rotating ring 802. The outer sleeve 801 is coaxially inserted into the output shaft 404, and the inner rotating ring 802 is coaxially rotatably connected to the outer sleeve 801. The two ends of the outer sleeve 801 and the inner rotating ring 802 are aligned, and the overall structure formed by the outer sleeve 801 and the inner rotating ring 802 is completely located within the output shaft 404.

[0070] See Figure 5 and Figure 6 In addition, to facilitate the installation of the outer sleeve 801 and the inner rotating ring 802 as a whole into the output shaft 404, the output shaft 404 includes a left half shaft 4041 and a right half shaft 4042. The radial cross-section of the left half shaft 4041 and the right half shaft 4042 is semi-circular. The left half shaft 4041 and the right half shaft 4042 are spliced ​​together to form the entire output shaft 404. The left half shaft 4041 and the right half shaft 4042 can be fixed by welding or by bolt connection. There is no limitation here, as long as the left half shaft 4041 and the right half shaft 4042 can be connected and fastened.

[0071] See Figure 6 and Figure 7 An abutment groove 8021 is provided on the outer wall of the inner rotating ring 802. At least two support inclined surfaces 8022, distributed circumferentially along the inner rotating ring 802, are provided within the abutment groove 8021. The support inclined surfaces 8022 are integrally formed with the abutment groove 8021. The distance between at least a portion of the surface of the support inclined surface 8022 on the side opposite to the axis of the inner rotating ring 802 and the axis of the inner rotating ring 802 gradually decreases in a clockwise or counterclockwise direction. In one example, such as… Figure 3As shown, at least a portion of the surface of the top support inclined surface 8022 on the side opposite to the axis of the inner rotating ring 802 is gradually reduced in a clockwise direction from the axis of the inner rotating ring 802.

[0072] See Figure 6 and Figure 7 At least two pin holes 8011 are provided on the side wall of the outer sleeve 801, spaced apart along the circumference of the outer sleeve 801. Each pin hole 8011 corresponds to a top support inclined surface 8022. An inner support pin 803 slides in each pin hole 8011. Each inner support pin 803 corresponds to a top support inclined surface 8022, and one end of the inner support pin 803 located inside the outer sleeve 801 abuts against the top support inclined surface 8022.

[0073] See Figure 6 and Figure 7 In one embodiment, the pin hole 8011 includes a large inner diameter section 80111 and a small inner diameter section 80112. The inner diameter of the large inner diameter section 80111 is larger than the inner diameter of the small inner diameter section 80112. The large inner diameter section 80111 and the small inner diameter section 80112 are coaxial and communicate with each other. The pin hole 8011 penetrates the side wall of the outer sleeve 801. The opening of the large inner diameter section 80111 away from the small inner diameter section 80112 penetrates the outer side wall of the outer sleeve 801. The opening of the small inner diameter section 80112 away from the large inner diameter section 80111 penetrates the inner side wall of the outer sleeve 801. A plug 804 is fixed in the opening of the large inner diameter section 80111 away from the small inner diameter section 80112, and an inner support pin 803 passes through the plug 804. A sliding ring 805 is fixed on the inner support pin 803. The sliding ring 805 slides in the large inner diameter section 80111. A reset spring 806 is provided between the plug 804 and the sliding ring 805. The reset spring 806 is sleeved on the inner support pin 803.

[0074] See Figure 6 and Figure 7 The side wall of the output shaft 404 is provided with at least two through holes 4043 that are spaced apart along the circumference of the output shaft 404. The through holes 4043 correspond one-to-one with the pin holes 8011 and communicate with the pin holes 8011. The through holes 4043 correspond one-to-one with the inner support pins 803, and the inner support pins 803 pass through both the through holes 4043 and the pin holes 8011. With this configuration, when the inner support pin 803 is located inside the outer sleeve 801 and abuts against the lowest point of the top support slope 8022, the end of the inner support pin 803 away from the top support slope 8022 is located inside the through hole 4043 and does not protrude from the opening of the through hole 4043; when the inner support pin 803 is located inside the outer sleeve 801 and abuts against the highest point of the top support slope 8022, the end of the inner support pin 803 away from the top support slope 8022 passes through the through hole 4043 and protrudes from the opening of the through hole 4043.

[0075] See Figure 6 and Figure 7 The yarn spool 7 is detachably mounted on the output shaft 404. The yarn spool 7 is a cylindrical structure with open ends or a cylindrical structure with one open end and one closed end. When the yarn spool 7 needs to be installed on the output shaft 404, the yarn spool 7 is fitted onto the output shaft 404 through the opening at one end. Then, the operator rotates the inner rotating ring 802 clockwise, and the inner support pin 803 gradually contacts the highest point of the top support inclined surface 8022. At this time, the reset spring 806 is in a compressed state. When the inner support pin 803 approaches the highest point of the top support inclined surface 8022, the inner support pin 803 protrudes from the opening of the through hole 4043 and abuts against the inner side wall of the yarn spool 7. The yarn spool 7 is fixed on the output shaft 404 by the abutment of the inner support pin 803. When it is necessary to remove the yarn bobbin 7 from the output shaft 404, the operator rotates the inner rotating ring 802 in the opposite direction. Under the elastic force of the reset spring 806, the inner support pin 803 fully enters the through hole 4043, thereby releasing the inner support pin 803 from the yarn bobbin 7. The operator can then remove the yarn bobbin 7.

[0076] It should be noted that the above "positive" refers to Figure 5 or Figure 6 The clockwise direction, the "reverse" mentioned above refers to Figure 3 The counterclockwise direction.

[0077] See Figure 1 and Figure 6 To facilitate the rotation of the inner rotating ring 802, a twist handle 807 is provided outside the output shaft 404. The twist handle 807 includes a rotating part 8071 and an insertion part 8072, which is inserted into the output shaft 404. The inner rotating ring 802 has a mating hole 8023 extending through it along its axial direction. After the insertion part 8072 enters the output shaft 404, it is inserted into the mating hole 8023 of the inner rotating ring 802. The cross-section of the insertion part 8072 is a regular polygon, such as a square, a regular pentagon, or a regular hexagon. The mating hole 8023 of the inner rotating ring 802 is a regular polygonal hole, such as a square, a regular pentagon, or a regular hexagon. The insertion part 8072 is adapted to the mating hole 8023. The end of the insertion part 8072 away from the inner rotating ring 802 is located outside the output shaft 404. The rotating part 8071 is fixedly connected to the end of the insertion part 8072 away from the inner rotating ring 802. When the operator rotates the rotating part 8071, the inner rotating ring 802 can be rotated through the transmission of the insertion part 8072.

[0078] See Figure 1A threaded hole is provided on the side wall of the output shaft 404. The threaded hole communicates with the interior of the output shaft 404 and is located at the end of the output shaft 404 near the rotating part 8071. A fastening bolt 808 is threaded into the threaded hole. After the inner rotating ring 802 is rotated to the position by turning the handle 807, the operator tightens the fastening bolt 808 so that the fastening bolt 808 abuts against the side wall of the insertion part 8072, thereby limiting the insertion part 8072 in the circumferential direction and improving the stability of the inner support pin 803 against the yarn bobbin 7.

[0079] Thus, when the yarn spool 7 needs to be installed on the output shaft 404, the operator places the yarn spool 7 on the output shaft 404, and then rotates the handle 807 clockwise. When the inner support pin 803 approaches the highest point of the top support slope 8022, the inner support pin 803 protrudes from the opening of the through hole 4043 and abuts against the inner wall of the yarn spool 7. The yarn spool 7 is fixed on the output shaft 404 by the abutment of the inner support pin 803. When the yarn spool 7 finishes winding, the operator rotates the handle 807 counterclockwise. Under the elastic force of the reset spring 806, the inner support pin 803 fully enters the through hole 4043, thereby releasing the abutment of the inner support pin 803 against the yarn spool 7. The operator can then remove the yarn spool 7.

[0080] See Figure 1 The detection component 5 is used to detect whether the yarn spool 7 is in the winding state. The detection component 5 includes a rotating roller 501 and a sensor 502. After the yarn passes through the surface of the rotating roller 501, it is collected on the yarn spool 7. The sensor 502 is used to sense whether the rotating roller 501 is rotating. By detecting whether the rotating roller 501 is rotating, it is determined whether the yarn spool 7 is in the winding state.

[0081] See Figure 1 and Figure 8The rotating roller 501 includes a roller body 5011 and a magnetic block 5012. The roller body 5011 includes an inner core shaft 50111 and an outer rotating roller 50112. The inner core shaft 50111 is fixedly connected to the mounting frame 1. The outer rotating roller 50112 is hollow inside, with one end being open. The outer rotating roller 50112 is sleeved on the inner core shaft 50111 through its opening and is rotatably connected to the inner core shaft 50111 via a bearing. The end of the outer rotating roller 50112 facing the mounting frame 1 is the fixed end 50113, and the end of the outer rotating roller 50112 away from the mounting frame 1 is the suspended end 50114. The sensor 502 is a Hall sensor 502. The magnetic block 5012 is fixed on the end face of the fixed end 50113 of the outer rotating roller 50112, and multiple magnetic blocks 5012 are spaced apart along the circumference of the roller body 5011. Sensor 502 is a Hall sensor 502. The Hall sensor 502 is connected to the mounting bracket 1. The detection end of the Hall sensor 502 faces the end of the roller body 5011 where the magnetic block 5012 is mounted, that is, the detection end of the Hall sensor 502 faces the fixed end 50113 of the outer rotating roller 50112.

[0082] During the winding process of the yarn by the yarn bobbin 7, the yarn first passes through the outer rotating roller 50112. The movement of the yarn drives the outer rotating roller 50112 to rotate. While the outer rotating roller 50112 is rotating, its fixed end 50113 also rotates continuously. However, if the yarn breaks midway and no longer passes through the outer rotating roller 50112, the fixed end 50113 of the outer rotating roller 50112 will stop rotating. During this process, the Hall sensor 502 can determine the rotation of the outer rotating roller 50112 based on the periodic signal changes of multiple spaced magnetic blocks 5012. That is, when there is a periodic signal change, the outer rotating roller 50112 is rotating; otherwise, it is stationary. When the outer rotating roller 50112 is rotating, it indicates no abnormality; when it is stationary, it indicates an abnormality. It should be noted that the combination of Hall sensor 502 and magnetic block 5012 is existing technology, and the specific working principle and process of the two will not be described in detail here.

[0083] When sensor 502 detects that the outer roller 50112 has stopped rotating, the first drive assembly 3 drives the swing frame 2 to swing from the first contact point 102 to the second contact point 103, so that the switch assembly disconnects the electrical connection between the second drive assembly 4 and the power supply; when sensor 502 detects that the outer roller 50112 is rotating, the swing frame 2 remains in contact with the first contact point 102, so that the switch assembly maintains the electrical connection between the second drive assembly 4 and the power supply.

[0084] By setting the detection component 5, the rotation of the yarn drum 7 can be braked immediately in the event of an abnormal condition, so as to prevent the yarn on the yarn drum 7 from flying and improve the safety of the work site.

[0085] It should be noted that the twisting machine is usually equipped with a control system. The logical relationship between the Hall sensor 502, the first drive component 3, the second drive component 4, and the detection component 5 is realized through the control system. The control system is a conventional control system in the prior art, such as a PLC, which will not be described in detail here.

[0086] The working principle of the emergency braking mechanism of the twisting machine of the present invention:

[0087] When it is necessary to collect the twisted yarn, the yarn spool 7 is fitted onto the output shaft 404 through the opening at one end. Then, the operator rotates the inner rotating ring 802 forward, and the inner support pin 803 gradually contacts the highest point of the top support slope 8022. At this time, the reset spring 806 is in a compressed state. When the inner support pin 803 approaches the highest point of the top support slope 8022, the inner support pin 803 protrudes out of the orifice 4043 and abuts against the inner wall of the yarn spool 7. The yarn spool 7 is fixed on the output shaft 404 by the abutment of the inner support pin 803.

[0088] Then, the first drive motor 301 is started so that the swing end 202 contacts the first contact point 102. The first contact 601 and the second contact 602 always maintain a close contact under the elastic action of the torsion member 303. At this time, the second drive motor 401 is electrically connected to the power supply. The second drive motor 401 drives the drive gear 402 to rotate. The drive gear 402 drives the output shaft 404 to rotate through the driven gear 403. The output shaft 404 drives the yarn bobbin 7 to rotate, thereby using the yarn bobbin 7 to perform the winding work.

[0089] During the winding process of the yarn spool 7, the yarn first passes through the outer rotating roller 50112 and is then wound onto the yarn spool 7. As the yarn is wound by the yarn spool 7, it passes through the outer rotating roller 50112. The movement of the yarn drives the outer rotating roller 50112 to rotate. During the rotation of the outer rotating roller 50112, the fixed end 50113 of the outer rotating roller 50112 also rotates continuously.

[0090] During this process, Hall sensor 502 detects whether the outer roller 50112 is rotating. When the outer roller 50112 is rotating, it indicates that there is no abnormality; when the outer roller 50112 is stationary, it indicates that an abnormality has occurred, such as yarn breakage.

[0091] When an abnormality occurs, the first drive motor 301 starts working, driving the drive gear 304 to rotate. The drive gear 304 drives the swing gear 302 to rotate. When the first stop block 203 and the second stop block 3021 contact, the swing gear 302 continues to rotate. The swing gear 302 uses the second stop block 3021 to push the swing end 202 of the swing frame 2 away from the first contact point 102. When the swing end 202 disengages from the first contact point 102, the first contact 601 disengages from the second contact 602. At this time, the second drive assembly 4 is in a de-energized state, and the yarn bobbin 7 stops winding.

[0092] When no abnormality occurs, the second drive motor 401 continues to work until the yarn bobbin 7 completes the yarn winding process. Then, the operator needs to remove the yarn bobbin 7 from the output shaft 404. The operator rotates the inner rotating ring 802 in the opposite direction, and the inner support pin 803, under the elastic force of the reset spring 806, fully enters the through hole 4043, thereby releasing the inner support pin 803 from the yarn bobbin 7. The operator can then remove the yarn bobbin 7.

[0093] The present invention also discloses a control method for an emergency braking mechanism of a twisting machine, which can immediately brake the rotation of the yarn bobbin 7 when the yarn suddenly stops, so as to prevent the yarn on the yarn bobbin 7 from flying and improve the safety of the work site.

[0094] See Figure 1 and Figure 8 The present invention discloses a control method for an emergency braking mechanism of a twisting machine, which is applied to the emergency braking mechanism of a twisting machine. The emergency braking mechanism of the twisting machine includes a mounting frame 1, a swing frame 2, a first drive assembly 3, a second drive assembly 4, a detection assembly 5, and a switch assembly. The detection assembly 5 includes a rotating roller 501 and a sensor 502. The yarn passes over the surface of the rotating roller 501 before being collected onto the yarn bobbin 7. The sensor 502 is used to sense whether the rotating roller 501 is rotating. The control method of the emergency braking mechanism of the twisting machine includes:

[0095] Step S101: Use sensor 502 to determine whether the rotating roller 501 is rotating.

[0096] During the winding process of the yarn by the yarn bobbin 7, the yarn first passes through the rotating roller 501. The movement of the yarn drives the rotating roller 501 to rotate. During the rotation of the rotating roller 501, the fixed end 50113 of the rotating roller 501 also rotates continuously. However, if the yarn breaks midway and no longer passes through the outer rotating roller 50112, the fixed end 50113 of the rotating roller 501 will stop rotating. When the rotating roller 501 is rotating, it indicates that there is no abnormality; when the outer rotating roller 50112 is stationary, it indicates that an abnormality has occurred. The aforementioned sensor 502 refers to the Hall sensor 502. The fixed end 50113 of the rotating roller 501 is fixed with multiple magnetic blocks 5012 arranged at intervals along the circumference. The Hall sensor 502 can determine the rotation of the rotating roller 501 based on the periodic signal changes of the multiple spaced magnetic blocks 5012. That is, when there is a periodic signal change, the rotating roller 501 is rotating; otherwise, the rotating roller 501 is stationary.

[0097] Step S102: If sensor 502 detects that the rotating roller 501 has stopped rotating, the first drive assembly 3 drives the swing frame 2 to swing from the first contact point 102 to the second contact point 103, so that the switch assembly disconnects the electrical connection between the second drive assembly 4 and the power supply.

[0098] In the above steps, when the rotating roller 501 is stationary, it indicates that the yarn has broken midway and no longer passes through the rotating roller 501. This is an abnormal state. In the abnormal state, it is necessary to disconnect the electrical connection between the second drive assembly 4 and the power supply to avoid an accident.

[0099] Step S103: When the sensor 502 detects that the rotating roller 501 is rotating, the swing frame 2 remains in contact with the first contact point 102 so that the switch assembly maintains the electrical connection between the second drive assembly 4 and the power supply.

[0100] In the above steps, when the rotating roller 501 is rotating, it means that the yarn is continuously passing through the rotating roller 501 and the yarn continuity is good. At this time, it is in a normal state. In the normal state, it is necessary to maintain the electrical connection between the second drive component 4 and the power supply in order to achieve continuous yarn take-up.

[0101] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. Regarding the methods disclosed in the embodiments, since they correspond to the apparatus disclosed in the embodiments, the descriptions are relatively simple; relevant parts can be referred to the apparatus description.

[0102] The above provides a detailed description of an emergency braking mechanism and control method for a doubling twister provided by the present invention. Specific examples have been used to illustrate the principles and implementation methods of the invention. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. An emergency braking mechanism for a doubling twister, characterized in that, include: The mounting bracket (1) is provided with a mounting shaft (101), and the mounting bracket (1) has a first contact point (102) and a second contact point (103); A swing frame (2), one end of which is a rotating end (201) and the other end is a swinging end (202). The rotating end (201) is rotatably connected to the mounting shaft (101) of the mounting frame (1). The swinging end (202) is the end of the swing frame (2) away from the mounting frame (1). The swing frame (2) is capable of swinging between the first contact point (102) and the second contact point (103). A first drive assembly (3) is used to drive the swing frame (2) to swing between the first contact point (102) and the second contact point (103); The second drive assembly (4) has its output end located at the swing end (202) of the swing frame (2) and is equipped with a yarn spool (7). The twisted yarn is collected on the yarn spool (7). The detection component (5) includes a rotating roller (501) and a sensor (502). After the yarn passes through the surface of the rotating roller (501), it is collected on the yarn bobbin (7). The sensor (502) is used to sense whether the rotating roller (501) is rotating. A switch assembly is disposed between the swing frame (2) and the first contact point (102), the switch assembly being used to connect the second drive assembly (4) to the power supply; When the sensor (502) senses that the rotating roller (501) has stopped rotating, the first drive assembly (3) drives the swing frame (2) to swing from the first contact point (102) to the second contact point (103) so that the switch assembly disconnects the electrical connection between the second drive assembly (4) and the power supply; when the sensor (502) senses that the rotating roller (501) is rotating, the swing frame (2) remains in contact with the first contact point (102) so that the switch assembly maintains the electrical connection between the second drive assembly (4) and the power supply.

2. The emergency braking mechanism for a doubling twister according to claim 1, characterized in that, The first drive assembly (3) includes a first drive motor (301), a swing gear (302), and a torsion member (303). The swing gear (302) is rotatably connected to the mounting shaft (101) and connected to the swing frame (2). The first drive motor (301) is used to drive the swing gear (302) to rotate. The torsion member (303) is sleeved on the mounting shaft (101). One end of the torsion member (303) is connected to the swing gear (302), and the other end is connected to the swing frame (2).

3. The emergency braking mechanism for the doubling twister according to claim 2, characterized in that, While the swing frame (2) is in contact with the first contact point (102), the torsion member (303) is in a pre-tightened state. The pre-tightening force of the torsion member (303) tends to drive the swing frame (2) to continue to press against the first contact point (102) so that the switch assembly is tightly connected.

4. The emergency braking mechanism for the doubling twister according to claim 3, characterized in that, The switch assembly includes a first contact (601) and a second contact (602). The first contact (601) is located at the point where the swing frame (2) contacts the first contact point (102). The first contact (601) is electrically connected to the second drive assembly (4). The second contact (602) is located on the first contact point (102) and is connected to the power supply point. When the swing frame (2) contacts the first contact point (102), the first contact (601) contacts the second contact (602) to make the second drive assembly (4) electrically connected to the power source.

5. The emergency braking mechanism for a doubling twister according to claim 3, characterized in that, The swing frame (2) has a first stop block (203) on the side facing the swing gear (302), and the swing gear (302) has a second stop block (3021) on the side facing the swing frame (2). The horizontal distance between the first stop block (203) and the first contact point (102) is greater than the horizontal distance between the second stop block (3021) and the first contact point (102).

6. The emergency braking mechanism for a doubling twister according to claim 1, characterized in that, The second drive assembly (4) includes a second drive motor (401), a drive gear (402), and a driven gear (403). The second drive motor (401) is connected to the swing frame (2). The drive gear (402) is mounted on the output shaft (404) of the second drive motor (401). The output shaft (404) is rotatably connected to the swing frame (2). The driven gear (403) is fixedly mounted on the output shaft (404). The drive gear (402) meshes with the driven gear (403). The output shaft (404) is the output end of the second drive assembly (4).

7. The emergency braking mechanism for a doubling twister according to claim 6, characterized in that, The output shaft (404) is a cylindrical structure with openings at both ends. An inner support assembly (8) is provided inside the output shaft (404). The inner support assembly (8) includes an outer sleeve (801) and an inner rotating ring (802). The outer sleeve (801) is coaxially inserted into the output shaft (404), and the inner rotating ring (802) is coaxially rotatably connected to the outer sleeve (801). An avoidance ring groove (8021) is provided on the outer wall of the inner rotating ring (802). At least two top support inclined surfaces (8022) are provided in the avoidance ring groove (8021) distributed circumferentially along the inner rotating ring (802). The outer sleeve (801)... 1) The side wall is provided with at least two pin holes (8011) spaced apart along the circumference of the outer sleeve (801), and an inner support pin (803) slides in each pin hole (8011). The inner support pin (803) corresponds one-to-one with the top support inclined surface (8022). One end of the inner support pin (803) located inside the outer sleeve (801) abuts against the top support inclined surface (8022). The side wall of the output shaft (404) is provided with at least two through holes (4043) spaced apart along the circumference of the output shaft (404). The through holes (4043) correspond one-to-one with the inner support pin (803).

8. The emergency braking mechanism for a doubling twister according to claim 7, characterized in that, The output shaft (404) is provided with a twist handle (807), the twist handle (807) has an insertion part (8072), the inner rotating ring (802) has a docking hole (8023), the insertion part (8072) is adapted to the docking hole (8023), and the end of the insertion part (8072) away from the inner rotating ring (802) is located outside the output shaft (404).

9. The emergency braking mechanism for a doubling twister according to claim 1, characterized in that, The rotating roller (501) includes a roller body (5011) and a plurality of magnetic blocks (5012) arranged at intervals along the circumference of the roller body (5011). The sensor (502) is a Hall sensor (502), and the detection end of the Hall sensor (502) faces the end of the roller body (5011) where the magnetic block (5012) is mounted.

10. A control method for the emergency braking mechanism of a twisting machine as described in any one of claims 1-9, characterized in that, The emergency braking mechanism of the twisting machine includes a mounting frame (1), a swing frame (2), a first drive assembly (3), a second drive assembly (4), a detection assembly (5), and a switch assembly. The detection assembly (5) includes a rotating roller (501) and a sensor (502). The yarn passes over the surface of the rotating roller (501) before being collected onto the yarn bobbin (7). The sensor (502) is used to sense whether the rotating roller (501) is rotating. The control method of the emergency braking mechanism of the twisting machine includes: The sensor (502) is used to determine whether the rotating roller (501) is rotating; If the sensor (502) detects that the rotating roller (501) has stopped rotating, the first drive assembly (3) drives the swing frame (2) to swing from the first contact point (102) to the second contact point (103) so that the switch assembly disconnects the electrical connection between the second drive assembly (4) and the power supply; When the sensor (502) detects that the rotating roller (501) is rotating, the swing frame (2) remains in contact with the first contact point (102) so that the switch assembly maintains the electrical connection between the second drive assembly (4) and the power supply.

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