An S-type isolation plate auxiliary cylinder changing device and its control method

Abstract

This application belongs to the technical field of glass fiber drawing machines, specifically relating to an S-shaped separator plate-assisted bobbin changing device and its bobbin changing method. It includes several machine heads; an upper bobbin changing seat is provided at the outer end of each machine head; an annular winding array is provided on the upper bobbin changing seat; the annular winding array includes several winding column units; the several winding column units are evenly spaced around the central axis of the machine head; a yarn pushing channel is formed between every two adjacent winding column units; a yarn pushing active cavity is defined in the middle of the several winding column units; the yarn pushing channel connects to the yarn pushing active cavity; it also includes an S-shaped separator plate; a dovetail yarn guide plate is provided at the outer end of the S-shaped separator plate; two yarn guiding grooves are defined between the dovetail yarn guide plate and the outer end face of the S-shaped separator plate. This application helps to improve the efficiency of head changing operations on the drawing machine, reduce yarn pushing resistance, and improve bobbin changing efficiency.

Description

Technical Field

[0001] This application belongs to the technical field of glass fiber drawing machines, specifically relating to an S-shaped isolation plate auxiliary cylinder changing device and its control method. Background Technology

[0002] Glass fiber, as a composite reinforcing material, has a wide range of applications and varieties, including direct drawing into cylindrical yarn balls by a drawing machine and drawing into horse-shaped yarn balls by a yarn cake drawing machine, etc.

[0003] In the current fiberglass furnace drawing process, the yarn is wound onto the upper wire ring by a V-groove with a wire hook or a threaded groove with a wire hook. This is a superior upper wire ring structure in recent years. However, the yarn left on the upper wire ring is difficult for the robot to remove. It must be manually cut and removed on-site before the robot can complete the yarn removal work. Such human-machine cooperation poses safety hazards and cannot achieve automated continuous production.

[0004] With societal progress, harsh working environments and operational safety have become paramount. In the era of intelligent manufacturing, replacing manual labor with enclosed, fully automated robotic arms in the yarn drawing area, along with energy conservation and improved production efficiency, have become urgent priorities. To address the challenges of increasing the utilization value of waste yarn at the top of the yarn drawing machine and achieving unmanned automation, breakthroughs are needed in cutting and removing yarn remaining on the yarn drawing ring. This will enable upgrades to existing equipment, achieving automated production operations that push out the entire loop of waste yarn at the top of the yarn drawing machine without human intervention. This will improve the overall performance and efficiency of existing yarn drawing machines, significantly enhancing the residual value of waste yarn at the top of the yarn drawing machine and achieving substantial economic benefits.

[0005] Existing drawing machines generally use fixed yarn hooks to complete the yarn changing operation, which is not only inconvenient for changing bobbins, but also affects the processing of transition yarns.

[0006] Related technical documents:

[0007] Chinese Patent: Automatic Yarn-Pulling Machine and Control Method for Automatic Yarn-Pulling and Transitioning without Yarn Cutting, Application Publication No. CN 118459081 A, which relates to an automatic yarn-pulling and transitioning scheme using a transition ring.

[0008] Chinese Patent: Automatic Push-out Mechanism for Upper Head Changer Without Cutting and Control Method Thereof with Telescopic Claws and Fixed Claws Arranged in a Cross Pattern, Application Publication No. CN 118545903 A, which relates to the upper head changing yarn pushing assembly seat and the radial telescopic claw mechanism.

[0009] Chinese Patent: Slow-pull automatic online yarn feeding mechanism without cutting; Publication No. CN211141896U; involving existing yarn feeding hooks and yarn feeding ring grooves, as well as machine head turntables and double machine head configuration schemes; and a slow-pull traction mechanism.

[0010] Chinese Patent: An Automatic Yarn Cutting Mechanism for a Wire Drawing Machine; Publication No.: CN222138959U; relates to an automatic yarn cutting mechanism.

[0011] Chinese Patent: A multi-stroke pusher mechanism for a wire drawing machine; Publication No.: CN222274392U; relates to a pusher mechanism. Summary of the Invention

[0012] In view of this, this application provides an S-type isolation plate auxiliary cylinder changing device and its control method to solve all or part of the technical problems described in the background section of this application.

[0013] The solution provided in this application to resolve its technical problem is as follows:

[0014] An S-shaped isolation plate auxiliary yarn changing device includes several machine heads; an upper yarn changing seat is provided at the outer end of the machine head; characterized in that: an annular winding array is provided on the upper yarn changing seat; the annular winding array includes several winding column units; the several winding column units are evenly spaced around the central axis of the machine head; a yarn pushing channel is formed between every two adjacent winding column units; a yarn pushing movable cavity is defined in the middle of the several winding column units; the yarn pushing channel is connected to the yarn pushing movable cavity.

[0015] Preferably, the winding column has a fan-shaped structure.

[0016] Preferably, the S-shaped isolation plate auxiliary yarn changing device further includes an S-shaped isolation plate; a dovetail yarn guide plate is provided at the outer end of the S-shaped isolation plate; two yarn guide grooves are defined between the outer end faces of the dovetail yarn guide plate and the S-shaped isolation plate.

[0017] Preferably, the outer end of the machine head is provided with a yarn pushing piston chamber; the yarn pushing piston chamber extends along the central axis of the machine head and communicates with the yarn pushing movable chamber; the S-type isolation plate auxiliary bobbin changing device also includes a yarn pushing mechanism and a yarn pushing component; the yarn pushing mechanism includes a yarn pushing piston rod, a yarn pushing piston chamber cover, and a yarn pushing return component; the yarn pushing piston chamber cover is provided at the opening of the yarn pushing piston chamber; the piston part of the yarn pushing piston rod is provided in the yarn pushing piston chamber and the connecting rod part extends out of the yarn pushing piston chamber cover; the yarn pushing return component is provided in the yarn pushing piston chamber and its two ends act on the yarn pushing piston chamber cover and the piston part of the yarn pushing piston rod respectively; the yarn pushing component is fixedly connected to the extended end of the connecting rod part of the yarn pushing piston rod.

[0018] Furthermore, the yarn pushing component includes a central disc and several radial rods; the several radial rods are fixedly mounted on the central disc; the central disc is fixedly connected to the extended end of the connecting rod of the yarn pushing piston rod, and the radial rods are mounted within the yarn pushing channel.

[0019] Furthermore, the yarn pushing component also includes an outer ring; the outer ring and the center disc are connected as one unit by a radial rod.

[0020] Preferably, the S-shaped isolation plate auxiliary drum changing device further includes a rotary drum; several machine heads are arranged on the rotary drum and isolated from each other by the S-shaped isolation plate. Further, there are two machine heads, namely a first machine head and a second machine head; the first machine head and the second machine head are arranged on the rotary drum and isolated from each other by the S-shaped isolation plate.

[0021] The aforementioned S-type isolation plate auxiliary cylinder changing device also requires the use of a threading hook to assist the machine head in completing the automatic head changing operation. A fixed threading hook or a centrifugal threading hook can be used; these will be described separately below.

[0022] When using a fixed wire hook, the fixed wire hook is set on the outer circumference of the upper head changing seat and at a distance from the individual wire winding column of the annular wire winding array.

[0023] When using a centrifugal threading hook, the centrifugal threading hook includes a centrifugal base, an elastic component, a threading hook body, and a shaft component; the centrifugal base is provided with an elastic component groove and a pivot groove; the pivot groove has hole structures on both sides; the threading hook body includes a pivot part, a hook part, and a pushing part; the pivot part is provided with a pivot hole; the elastic component is located in the elastic component groove, the pivot part is located in the pivot groove, and the elastic component acts on the pushing part; the centrifugal base and the threading hook body are connected by the shaft component, the hole structure, and the pivot hole; the upper head seat is provided with a centrifugal base groove and a threading hook; the centrifugal base is located in the centrifugal base groove, and the hook part of the threading hook body is located in the threading hook groove.

[0024] Furthermore, the elastic component can be a spring, a spring sheet, or a ball screw, etc.

[0025] When the machine head rotates, the upper wire hook body can rotate outward around the shaft component under the action of centrifugal force to hook the wire onto the head. After the machine head stops rotating, the upper wire hook body can rotate inward around the shaft component under the action of the elastic component to retract; avoiding the movement path of the pushing action and reducing the adhesion of the transition yarn loop to reduce the pushing resistance.

[0026] Preferably, the S-shaped isolation plate auxiliary cylinder changing device further includes a wire pusher mechanism; the wire pusher mechanism is used to push the glass fiber yarn.

[0027] Preferably, the S-shaped isolation plate auxiliary bobbin changing device further includes a slow-pulling traction mechanism; the slow-pulling traction mechanism includes a driving roller, a driven roller, and a driving roller drive component; the slow-pulling traction mechanism further includes a yarn-beating device; the yarn-beating device includes a yarn-beating rod shaft, a yarn-beating rod, a rotating drum, and a shaft drive component; the yarn-beating rod is mounted on the yarn-beating rod shaft, the rotating drum is movably mounted on the yarn-beating rod, and the shaft drive component is used to drive the yarn-beating rod shaft to rotate.

[0028] The control methods corresponding to the aforementioned S-type isolation plate auxiliary cylinder changing devices are as follows:

[0029] A control method for an S-type baffle plate auxiliary cylinder changing device, characterized in that it is applied to the aforementioned various S-type baffle plate auxiliary cylinder changing devices; comprising:

[0030] In STEP 01, before changing the bobbin, the pusher screw mechanism pushes the fiberglass yarn to the upper head changing seat of the full bobbin head. The rotary drum drives the full bobbin head and the empty bobbin head to rotate synchronously. The fiberglass yarn is wound on the upper head changing seat of the full bobbin head. In this step, the fiberglass yarn gradually enters the yarn guide groove of the S-shaped isolation plate. The upper head changing seat of the empty bobbin head has not yet come into contact with the fiberglass yarn.

[0031] STEP 02 S-type separator plate assisted in the canister changing process. The rotary drum continues to rotate, and the upper changing head seat of the empty canister head begins to contact the fiberglass yarn. At this time, the yarn guide groove of the S-type separator plate has guided the fiberglass yarn to the yarn hook part, and the yarn hook of the empty canister head hooks the yarn to complete the canister changing. The rotary drum continues to rotate to 180° and then stops rotating.

[0032] The dividing line between the above-mentioned pre-boob changing step and the S-shaped isolation plate assisted boob changing step is defined by the critical angle α; the critical angle α satisfies: l0×cosα=h0×sinα+r; where: l0 is the distance between the yarn exit part of the guide wheel and the vertical line of the center of the rotating disc; h0 is the distance between the yarn exit part of the guide wheel and the horizontal line of the center of the rotating disc; and r is the radius of the annular winding array on the upper head changing seat.

[0033] Beneficial technical effects:

[0034] 1. This application improves the efficiency of yarn feeding by setting a yarn-beating device on the slow-pulling traction mechanism, which can guide the fiberglass yarn to the yarn-beating hook part when feeding the yarn.

[0035] 2. This application improves the efficiency of the upper head changing by setting a dovetail guide plate on the isolation plate and the guide groove can guide the glass fiber yarn to the upper hook part during the bobbin changing.

[0036] 3. This application adopts a multi-stroke pusher screw mechanism (publication number: CN222274392U), which can improve the head changing efficiency through double-stroke yarn pushing action, in coordination with the yarn beater and the dovetail guide plate.

[0037] 4. In the embodiment of the present application that uses a centrifugal yarn feeding hook, the yarn feeding hook body can not only rotate outward and unfold when the machine head is rotating, but also rotate inward and retract when the machine head is stationary; thus, it can not only complete the work of hooking the yarn onto the head, but also reduce the pushing resistance of the yarn, avoid the path of loading and unloading the bobbin, and improve the efficiency of changing the head.

[0038] The technical solution and technical effects of this application will be described in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0039] Figure 1: Schematic diagram of the overall structure of the wire drawing machine according to the first preferred embodiment;

[0040] Figure 2 : Schematic diagram of the rotary drum and head structure of the first preferred embodiment;

[0041] Figure 3 : Schematic diagram of the yarn pushing mechanism in the first preferred embodiment;

[0042] Figure 4 : Schematic diagram of the yarn-beating device in the first preferred embodiment;

[0043] Figure 5 : Exploded view of the nose section of the second preferred embodiment;

[0044] Figure 6 : Exploded view of the nose section structure from the second preferred embodiment;

[0045] Figure 7 : Exploded view of the centrifugal wire hook structure of the second preferred embodiment;

[0046] Figure 8 Schematic diagram of the centrifuge seat structure in the second preferred embodiment;

[0047] Figure 9 : Schematic diagram of the rotating drum at 90°;

[0048] Figure 10 : Schematic diagram of the rotating drum reaching the critical angle;

[0049] Figure 11 : Schematic diagram of the rotating drum at 180°;

[0050] Icon description:

[0051] 1-Die head, 11-Yarn pusher piston chamber, 12-Yarn pusher mechanism, 13-Yarn pusher component;

[0052] 121- Yarn pusher piston rod, 122- Yarn pusher piston chamber cover, 123- Yarn pusher return piece;

[0053] 131-Central disc, 132-Radial rod, 133-Outer ring;

[0054] 2-Upper head changing seat, 21-Annular winding wire array, 22-Centrifugal seat groove, 23-Wire hook groove;

[0055] 211-Wrapping column single unit, 212-Yarn pushing channel, 213-Yarn pushing movable cavity;

[0056] 3-S-shaped isolation plate, 31-dovetail yarn guide plate, 32-yarn guide groove;

[0057] 4-Fix the upper wire hook;

[0058] 5-Centrifugal threading hook, 51-Centrifugal base, 52-Elastic component, 53-Threading hook body, 54-Shaft component;

[0059] 511-Elastic component groove, 512-Pivoting groove, 513-Hole structure;

[0060] 531-Pivoting part, 532-Hook wire part, 533-Pushing part, 534-Pivoting hole;

[0061] 6-Threading screw mechanism;

[0062] 7-Slow pull traction mechanism; 71-Drive roller; 72-Driven roller; 73-Yarn beater; 731-Yarn beater bar shaft; 732-Yarn beater bar; 733-Rotating drum;

[0063] 8-Rotating disc;

[0064] 9-Wire drawing machine body. Detailed Implementation

[0065] Terminology Explanation: Existing fiber drawing machines generally include a drawing machine body, a rotary drum, and two heads mounted on the rotary drum. During winding, the paper tube is first fixed to the head, and then the fiberglass filaments are connected to the paper tube. The head rotates to wind the fiberglass filaments onto the paper tube, forming a yarn ball or yarn cake. When the paper tube being wound is full of fiberglass filaments (full tube), the rotation of the rotary drum changes the unwound paper tube (empty tube) to the winding position to continue winding. The full yarn ball or yarn cake is removed by a robot or manually to proceed to the next process. The process of initially connecting the fiberglass filaments to the empty paper tube is called "heading" in this application. The process of exchanging the positions of the empty and full tubes through the rotation of the rotary drum is called "head changing" or "tube changing." The fiberglass yarn wound on the yarn loop or hook part of the head during the head changing process is called "transition yarn."

[0066] The S-type isolation plate auxiliary yarn changing device and its control method provided in this application are special equipment and processes for improving the efficiency of the upper yarn changing and for recycling the transition yarn.

[0067] Please see Figures 1 to 8 The S-shaped separator plate auxiliary drum changing device provided in this application includes two heads 1, a first and a second; both heads 1 are mounted on a rotating drum 8; the rotating drum 8 is mounted on the drawing machine body 9. The rotating drum 8 can rotate clockwise or counterclockwise under the action of its driving device. In addition to revolving with the rotating drum 8, the first and second heads 1 can also rotate on their own axis under the action of their respective driving devices to complete the drawing and winding work.

[0068] The two heads 1 in this application have the same structure and function, and each head 1 is equipped with an upper head changing seat 2 and an S-shaped isolation plate 3.

[0069] The upper head changing seat 2 is provided with an annular winding array 21; the annular winding array 21 includes a plurality of winding column units 211; the plurality of winding column units 211 are evenly spaced around the central axis of the machine head 1; a yarn pushing channel 212 is formed between every two adjacent winding column units 211; a yarn pushing active cavity 213 is defined in the middle of the plurality of winding column units 211; the yarn pushing channel 212 is connected to the yarn pushing active cavity 213.

[0070] The annular winding array 21 is used to assist in the top change. The fiberglass yarn can be hooked onto the top by the top hook from the outer circumference of the annular winding array 21, or it can be hooked onto the top by the top hook from the yarn pushing channel 212 of the annular winding array 21.

[0071] A dovetail yarn guide plate 31 is provided at the outer end of the S-shaped isolation plate 3; two yarn guide grooves 32 are defined between the dovetail yarn guide plate 31 and the outer end face of the S-shaped isolation plate 3. The two yarn guide grooves 32 are symmetrically arranged on the upper and lower sides of the central axis surface of the S-shaped isolation plate 3.

[0072] The dovetail yarn guide plate forms a yarn guide groove that can guide the fiberglass yarn to the upper yarn hook part during yarn changing to improve the efficiency of yarn changing.

[0073] The outer end of the machine head 1 is provided with a yarn pushing piston chamber 11; the yarn pushing piston chamber 11 extends along the central axis of the machine head 1 and connects to the yarn pushing movable chamber 213; the S-type isolation plate auxiliary bobbin changing device also includes a yarn pushing mechanism 12 and a yarn pushing component 13; the yarn pushing mechanism 12 includes a yarn pushing piston rod 121, a yarn pushing piston chamber cover 122, and a yarn pushing return component 123; the yarn pushing piston chamber cover 122 is provided at the opening of the yarn pushing piston chamber 11; the piston part of the yarn pushing piston rod 121 is provided in the yarn pushing piston chamber 11 and the connecting rod part extends out of the yarn pushing piston chamber cover 122; the yarn pushing return component 123 is provided in the yarn pushing piston chamber 11 and its two ends act on the yarn pushing piston chamber cover 122 and the piston part of the yarn pushing piston rod 121 respectively.

[0074] The yarn pushing component 13 includes a central disc 131, an outer ring 133, and several radial rods 132; the outer ring 133 and the central disc 131 are connected as a whole by the radial rods 132. Several radial rods 132 are fixedly mounted on the central disc 131; the central disc 131 is fixedly connected to the extended end of the connecting rod of the yarn pushing piston rod 121, and the radial rods 132 are disposed within the yarn pushing channel 212.

[0075] When compressed air is supplied, the yarn-pushing piston rod 121 drives the yarn-pushing component 13 forward along the yarn-pushing channel 212, thereby pushing the transition yarn on the annular winding array 21 down to the upper head changing seat 2. When the compressed air is cut off, the yarn-pushing piston rod 121 can return to its original position under the action of the yarn-pushing return component 123.

[0076] The S-type isolation plate auxiliary bobbin changing device also includes a wire pusher mechanism 6; the wire pusher mechanism 6 is used to push the glass fiber yarn. Please refer to the prior patent: A multi-stroke wire pusher mechanism for a drawing machine (Publication No.: CN222274392U). The wire pusher mechanism 6 used in this application is the multi-stroke wire pusher mechanism disclosed in that patent. When assisting in the upper head changing, it has two strokes: first, it pushes the glass fiber yarn from the drawing station to the annular winding array 21 of the upper head changing seat 2; when the empty bobbin head is on top, it pushes the glass fiber yarn to the upper hook part on the upper head changing seat 2. The efficiency of the upper head changing can be increased through the dual-stroke process.

[0077] The S-type isolation plate auxiliary yarn changing device also includes a slow-pulling traction mechanism 7; the slow-pulling traction mechanism 7 includes a driving roller 71, a driven roller 72, and a driving roller drive component; please refer to the prior patent: Slow-pulling automatic yarn feeding online non-cutting yarn transition yarn feeding mechanism (Publication No.: CN211141896U). The driving roller 71 and the driven roller 72 are used to pull the glass fiber yarn during yarn feeding to assist the machine head 1 in completing the yarn feeding and changing work.

[0078] In addition to having a slow-pull traction function, the slow-pull traction mechanism 7 disclosed in this application also includes a yarn-beating device 73; the yarn-beating device 73 includes a yarn-beating rod shaft 731, a yarn-beating rod 732, a rotating drum 733, and a shaft drive component (not shown in the figure); the yarn-beating rod 732 is disposed on the yarn-beating rod shaft 731, the rotating drum 733 is movably disposed on the yarn-beating rod 732, and the shaft drive component is used to drive the yarn-beating rod shaft 731 to rotate.

[0079] When the yarn is being fed onto the machine head 1, the yarn guide bar 732 can feed the fiberglass yarn to the yarn hook part from a direction of 45° relative to the fiberglass yarn to improve the yarn feeding efficiency.

[0080] To complete the wire feeding process, a wire feeding hook needs to be installed on the upper head changer 2. This application can use a fixed wire feeding hook 4 and a centrifugal wire feeding hook 5 to complete the wire feeding process.

[0081] Please see Figure 1 and Figure 2 The fixed yarn hook 4 is set on the outer circumference of the upper yarn changer 2. When the yarn is being fed, the fixed yarn hook 4 can work with the yarn feeding device 73 to complete the yarn feeding work; when changing the bobbin, the fixed yarn hook 4 can work with the dovetail yarn guide plate 31 and the yarn pusher mechanism 6 to complete the bobbin changing and yarn feeding work.

[0082] Although the fixed yarn feeding hook 4 is reliable and operates stably, it affects the yarn loading and unloading operations after the yarn is loaded onto the empty bobbin and after the bobbin is full. Furthermore, when the transition yarn is tightly wound, it also affects the yarn pushing efficiency, which is not conducive to the automation of the process. In order to solve this technical problem, this application adopts a centrifugal yarn feeding hook 5.

[0083] Please see Figures 5 to 8The centrifugal wire hook 5 includes a centrifugal seat 51, an elastic component 52, a wire hook body 53, and a shaft component 54. The centrifugal seat 51 is provided with an elastic component groove 511 and a pivot groove 512. Hole structures 513 are provided on both sides of the pivot groove 512. The wire hook body 53 includes a pivot part 531, a wire hook part 532, and a pushing part 533. A pivot hole 534 is provided on the pivot part 531. The elastic component 52 is disposed in the elastic component groove 511, and the pivot part 531 is disposed in the pivot groove 512. The elastic component 52 acts on the pushing part 533. The centrifugal seat 51 and the wire hook body 53 are connected by the shaft component 54, the hole structure 513, and the pivot hole 534.

[0084] The upper head seat 2 of the centrifugal wire hook 5 is provided with a centrifugal seat groove 22 and a wire hook groove 23; the centrifugal seat groove 22 is connected to the wire hook groove 23; the centrifugal seat 51 is set in the centrifugal seat groove 22, and the wire hook part 532 of the wire hook body 53 is set in the wire hook groove 23.

[0085] When the machine head 1 rotates, the upper wire hook body 53 can rotate outward around the shaft component 54 under the action of centrifugal force to hook the wire onto the head; after the machine head 1 stops rotating, the upper wire hook body 53 can rotate inward around the shaft component 54 under the action of the elastic component 52 to retract; avoiding the movement path of the upper and lowering actions and reducing the adhesion of the transition yarn loop to reduce the pushing resistance.

[0086] Please see Figures 9 to 11 The control method of the S-type isolation plate auxiliary cylinder changing device is explained below.

[0087] Yarn feeding operation: The yarn feeder pulls the fiberglass yarn to the slow-pulling traction mechanism 7, and the machine head 1, which is in the drawing and winding position, begins to rotate; the yarn-beating device 73 of the slow-pulling traction mechanism 7 guides the fiberglass yarn to the yarn-up hook part of the machine head 1 at a suitable tilt angle; the fiberglass yarn is captured by the yarn-up hook and wound on the annular winding array 21 of the upper head changing seat 2; the yarn-pushing mechanism 6 pushes the fiberglass yarn to the empty cylinder winding part for normal drawing and winding;

[0088] Cylinder changing operation:

[0089] STEP 01 Before changing the bobbin: After the current die head is full, the pusher screw mechanism 6 pushes the fiberglass yarn to the upper changer seat 2 of the full bobbin die head (first stroke of the pusher screw); the rotary drum 8 drives the full bobbin die head and the empty bobbin die head to rotate synchronously; the fiberglass yarn is wound onto the upper changer seat 2 of the full bobbin die head; in this step, the fiberglass yarn gradually enters the yarn guide groove 32 of the S-shaped isolation plate 3, and the upper changer seat 2 of the empty bobbin die head has not yet come into contact with the fiberglass yarn; Figure 9 and Figure 10 As shown;

[0090] STEP 02 S-type separator plate assisted in the bobbin changing process. The rotary drum 8 continues to rotate, and the upper bobbin changing head seat 2 of the empty bobbin head begins to contact the fiberglass yarn. At this time, the yarn guide groove 32 of the S-type separator plate 3 has guided the fiberglass yarn to the upper yarn hook position, and the yarn pusher mechanism 6 simultaneously pushes the fiberglass yarn to the upper yarn hook position (second stroke of the yarn pusher). The upper yarn hook of the empty bobbin head hooks the yarn to complete the bobbin changing; the fiberglass yarn is wound on the upper bobbin changing head seat of the empty bobbin head; the rotary drum 8 rotates to 180° and stops rotating; then the yarn pusher mechanism 6 pushes the fiberglass yarn to the empty bobbin winding position to continue drawing and winding; as shown Figure 11 As shown;

[0091] The dividing line between the above-mentioned pre-boob changing step and the S-shaped isolation plate assisted boob changing step is defined by the critical angle α; the critical angle α satisfies: l0×cosα=h0×sinα+r; where: l0 is the distance between the yarn exit part of the guide wheel and the vertical line of the center of the rotating disc; h0 is the distance between the yarn exit part of the guide wheel and the horizontal line of the center of the rotating disc; and r is the radius of the annular winding array on the upper head changing seat. Figure 10 The critical angle shown is approximately 26°; in different embodiments, the size of the critical angle can be flexibly adjusted by adjusting the ratio of l0 and h0.

[0092] Transition yarn processing: After the full-bore machine head is rotated to the standby position, the automatic yarn cutting mechanism (see prior patent: an automatic yarn cutting mechanism for a drawing machine; announcement number: CN222138959U) cuts or grinds off the connection between the yarn bundle and the transition yarn; then compressed air is connected to the yarn pushing piston chamber 11, and the yarn pushing piston rod 121 drives the yarn pushing component 13 to move forward along the yarn pushing channel 212, pushing the transition yarn on the annular winding array 21 down to the upper head changing seat 2 for recycling; then the compressed air is cut off, causing the yarn pushing piston rod 121 to return to its original position under the action of the yarn pushing return component 123; the yarn unloading robot unloads the full bobbin and loads an empty bobbin for standby.

[0093] In the embodiment employing the centrifugal wire hook 5, the following steps are also included:

[0094] As the machine head 1 rotates, the wire hook body 53 unfolds outward around the shaft component 54 under the action of centrifugal force; at this time, the wire is hooked onto the machine head.

[0095] In the process of avoiding air resistance and reducing resistance, the machine head 1 stops rotating, and the upper yarn hook body 53 rotates and retracts inward around the shaft component 54 under the action of the elastic component 52; avoiding the movement path of the upper and lower yarn actions and reducing the adhesion of the transition yarn loop to reduce the pushing resistance.

[0096] As can be seen from the above description, this application, through the cooperation of the yarn feeding device, the dovetail yarn guide plate, and the multi-stroke pusher mechanism, helps to improve the efficiency of yarn changing operations on the drawing machine; by adopting a centrifugal yarn feeding hook, the pushing resistance can be reduced, the path of loading and unloading the bobbin can be avoided, and the bobbin changing efficiency can be improved.

[0097] The technical solutions and effects of this application have been described in detail above with reference to the accompanying drawings and specific embodiments. It should be noted that those skilled in the art can develop other embodiments based on this. Any simple modifications and equivalent substitutions that do not depart from the innovative concept of this application are covered by this application and fall within the protection scope of this patent.

Claims

1. An S-type isolation plate auxiliary cylinder changing device, comprising a plurality of machine heads (1); characterized in that: The outer end of the machine head (1) is provided with an upper head changing seat (2); the upper head changing seat (2) is provided with an annular winding array (21); the annular winding array (21) includes a plurality of winding column units (211); the plurality of winding column units (211) are evenly spaced around the central axis of the machine head (1); a yarn pushing channel (212) is formed between every two adjacent winding column units (211); a yarn pushing active cavity (213) is defined in the middle of the plurality of winding column units (211); the yarn pushing channel (212) is connected to the yarn pushing active cavity (213). The S-shaped isolation plate auxiliary yarn changing device also includes an S-shaped isolation plate (3); a dovetail yarn guide plate (31) is provided at the outer end of the S-shaped isolation plate (3); two yarn guide grooves (32) are defined between the dovetail yarn guide plate (31) and the outer end face of the S-shaped isolation plate (3). The S-type isolation plate auxiliary cylinder changing device also includes a centrifugal wire hook (5). The centrifugal wire hook (5) includes a centrifugal seat (51), an elastic component (52), a wire hook body (53), and a shaft component (54); The centrifugal seat (51) is provided with an elastic component groove (511) and a pivot groove (512); the pivot groove (512) is provided with a hole structure (513) on both sides. The upper wire hook body (53) includes a pivot part (531), a hook wire part (532), and a pushing part (533); the pivot part (531) is provided with a pivot hole (534). The elastic component (52) is disposed in the elastic component groove (511), the pivot part (531) is disposed in the pivot groove (512), and the elastic component (52) acts on the pushing part (533); the centrifugal seat (51) and the upper wire hook body (53) are connected by the engagement of the shaft component (54), the hole structure (513), and the pivot hole (534); The upper head changing seat (2) is provided with a centrifugal seat groove (22) and an upper wire hook groove (23); The centrifugal seat (51) is disposed in the centrifugal seat groove (22), and the hook part (532) of the upper wire hook body (53) is disposed in the upper wire hook groove (23).

2. The S-type isolation plate auxiliary cylinder changing device according to claim 1, characterized in that: The outer end of the machine head (1) is provided with a yarn pushing piston chamber (11). The yarn pushing piston chamber (11) extends along the central axis of the machine head (1) and is connected to the yarn pushing movable chamber (213). The S-shaped isolation plate auxiliary yarn changing device also includes a yarn pushing mechanism (12) and a yarn pushing component (13). The yarn pushing mechanism (12) includes a yarn pushing piston rod (121), a yarn pushing piston chamber cover (122), and a yarn pushing return component (123). The yarn pushing piston chamber cover (122) is disposed at the opening of the yarn pushing piston chamber (11); the piston part of the yarn pushing piston rod (121) is disposed inside the yarn pushing piston chamber (11) and the connecting rod part extends out of the yarn pushing piston chamber cover (122); the yarn pushing return member (123) is disposed inside the yarn pushing piston chamber (11) and its two ends act on the yarn pushing piston chamber cover (122) and the piston part of the yarn pushing piston rod (121) respectively; The yarn pushing component (13) is fixedly connected to the extended end of the connecting rod of the yarn pushing piston rod (121).

3. The S-type isolation plate auxiliary cylinder changing device according to claim 2, characterized in that: The yarn pushing component (13) includes a central disc (131) and several radial rods (132). Several radial rods (132) are fixedly mounted on the central disk (131); The central disc (131) is fixedly connected to the extended end of the connecting rod of the yarn pushing piston rod (121), and the radial rod (132) is disposed in the yarn pushing channel (212).

4. The S-type isolation plate auxiliary cylinder changing device according to claim 3, characterized in that: The yarn pushing component (13) also includes an outer ring (133); The outer ring (133) and the central disk (131) are connected as one unit by the radial rod (132).

5. The S-type isolation plate auxiliary cylinder changing device according to claim 1, characterized in that: The S-type isolation plate auxiliary cylinder changing device also includes a fixed upper wire hook (4). The fixed upper wire hook (4) is set on the outer circumference of the upper head changing seat (2).

6. The S-type isolation plate auxiliary cylinder changing device according to claim 1, characterized in that: The S-shaped isolation plate auxiliary cylinder changing device also includes a pusher screw mechanism (6); the pusher screw mechanism (6) is used to push the glass fiber yarn.

7. The S-type isolation plate auxiliary cylinder changing device according to claim 1, characterized in that: The S-type isolation plate auxiliary cylinder changing device also includes a slow pull traction mechanism (7). The slow-pull traction mechanism (7) includes a drive roller (71), a driven roller (72), and a drive roller drive component; The slow-pull traction mechanism (7) also includes a yarn-beating device (73); The yarn beating device (73) includes a yarn beating rod shaft (731), a yarn beating rod (732), a rotating drum (733), and a shaft driving component; The yarn beating rod (732) is mounted on the yarn beating rod shaft (731), the rotating drum (733) is movably mounted on the yarn beating rod (732), and the shaft driving component is used to drive the yarn beating rod shaft (731) to rotate.

8. A control method for an S-type isolation plate auxiliary cylinder changing device, characterized in that: Applied to the S-type isolation plate auxiliary cylinder changing device as described in claim 1; comprising: STEP 01 Before changing the tube, the pusher screw mechanism (6) pushes the fiberglass yarn to the upper changing head seat (2) of the full tube head, and the rotating drum (8) drives the full tube head and the empty tube head to rotate synchronously; the fiberglass yarn is wound on the upper changing head seat of the full tube head; in this step, the fiberglass yarn gradually enters the yarn guide groove (32) of the S-shaped isolation plate (3), and the upper changing head seat of the empty tube head has not yet come into contact with the fiberglass yarn; STEP 02 S-type isolation plate assisted in the bobbin changing step. The rotary drum (8) continues to rotate, and the upper head changing seat of the empty bobbin head begins to contact the fiberglass yarn. At this time, the yarn guide groove (32) of the S-type isolation plate (3) has guided the fiberglass yarn to the upper yarn hook part. The upper yarn hook of the empty bobbin head hooks the yarn to complete the bobbin changing. The rotary drum (8) rotates to 180° and stops rotating. The boundary between the above-mentioned pre-replacement steps and the S-type isolation plate assisted replacement steps is defined by the critical angle α; the critical angle α satisfies: l0×cosα=h0×sinα+r; where: l0 is the distance between the yarn guide wheel's exit point and the center of the rotary drum on a vertical line. h0 is the distance between the yarn guide wheel's exit point and the horizontal center line of the rotary drum; r is the radius of the annular wire array on the upper headstock.

Images