Automatic feeding continuous online chopping machine

Abstract

The utility model relates to the technical field of glass fiber chopping equipment, in particular to an automatic feeding continuous online chopping machine. The chopping machine comprises a first chopping unit, a second chopping unit, a first telescopic mechanism, a first lifting mechanism, a second telescopic mechanism and a second lifting mechanism, the first lifting mechanism and the second lifting mechanism are arranged on the rack; the first telescopic mechanism and the second telescopic mechanism are respectively arranged on the first lifting mechanism and the second lifting mechanism; the first chopping unit and the second chopping unit are arranged on the first telescopic mechanism and the second telescopic mechanism respectively. Circulation of the units is completed through lifting and telescopic movement of the two chopping units, the operation difficulty of yarn leading and head feeding and yarn leading and head changing is reduced, the structural complexity of the chopping units is simplified, the equipment operation efficiency and the operation completion precision are improved, and meanwhile, environment pollution and resource waste caused by generation of fine yarn particles can be avoided.

Description

Technical Field

[0001] The present application relates to the technical field of glass fiber chopped short-cut equipment, and in particular to an automatic head-up continuous online short-cutting machine. Background Art

[0002] The glass fiber manufacturing process is briefly described: After the ore raw materials are formulated, they are melted into molten glass in a kiln. The glass then flows through a porous platinum bushing, where it is coated with a sizing agent by a filament oiler. The glass is then drawn into ultrafine fibers by various high-speed drawing equipment, such as a drawing machine. These fibers are wound into either direct roving or preformed yarn cakes, and are divided into offline chopped yarn and online chopped yarn. Offline chopped yarn is produced by winding preformed yarn cakes from preformed yarn cakes coated with a filament oiler through a drawing machine. These preformed yarn cakes are then combined and chopped offline. However, offline chopping requires long cycles, low efficiency, and high energy consumption. Online chopping simplifies the process of removing preformed yarn cakes. The fibers are then directly drawn and chopped from multiple bushings after being coated with a sizing agent by a filament oiler. This eliminates the need for a drawing machine, cake transfer, and offline chopping facilities required for each bushing.

[0003] One of the purposes of chopping is to cut the glass fiber yarn into suitable sizes for use so as to process it into the required products. For example, the chopped glass fiber yarn segments are added to cloth or sheet materials and then made into glass fiber cloth or glass fiber sheet materials through other raw materials such as adhesives.

[0004] Because glass fiber is very damaging to the rubber rollers and blades of the chopper, they need to be replaced regularly, requiring the machine to be shut down for replacement. While offline chopping can be easily replaced, this is not a problem with online chopping. An online chopping machine typically has multiple bushings. During maintenance and replacement of the rubber rollers and blades, each bushing continuously drains molten glass, causing waste. The long downtime for bushing replacement also causes temperature fluctuations, resulting in poor operational stability, low efficiency, and high energy consumption.

[0005] Subsequently, a dual-head symmetrically arranged back-to-back combined online short-cutting machine unit appeared on the market. When the rubber roller and blade needed to be replaced, the equipment was stopped, and then the short-cutting machine unit was rotated 180 degrees horizontally to switch the spare cutter on the back to the current side, and then the short-cutting machine on the current side was restarted. However, it still required more people to operate the two heads at the same time, and the impact of the shutdown on the stability of the leaky board could not be completely eliminated. Although the short-cutting machine unit on the opposite side could safely replace the rubber roller and blade, and the short-cutting process was greatly improved, it still needed to be stopped and the rotation switch was operated to restart the head, which was time-consuming and labor-intensive, and would also affect the leaky board operation.

[0006] To reduce downtime, Chinese patent number CN202011007628.6 discloses a single-sided double-knife roller automatic quick-change online glass fiber high-speed short-cutting machine. The patent adopts two short-cutting machine units fixed on the same turntable. Since the two pairs of cutters are fixed on the turntable, the standby cutter will be reversed as the turntable rotates 180 degrees, causing the yarn to be unable to switch to the other set of cutters in situ; at the same time, it is through each rubber roller port superimposed with a yarn switching transition ring. Before the rotation and transposition, the yarn is first pushed into the switching transition ring of the working cutter, and then a single-sided 180-degree rotation and transposition are performed, and then the yarn is switched to the standby cutter transition ring. While the rotation and transposition are being performed, the working cutter is gradually inverted. This two pairs of cutters are fixed on the same turntable. The switching process of the yarn from the working cutter to the standby cutter is relatively complicated and it is difficult for the yarn to leave the rubber roller and be pushed onto the transition ring.

[0007] Chinese patent number CN202011417133.0 discloses a single-sided automatic reversing continuous online glass fiber short cutting machine. The patent adds a self-rotation function to the two pairs of cutters on the same turntable, which will change the yarn so that the rubber roller can be switched to the rubber roller in place. While rotating 180°, the working cutter continues to cut and rotate to keep the yarn in place. The yarn is carried by the working cutter rubber roller to follow the 180° rotation and replacement. The yarn is hit into the standby cutter in place through the hitting rod and is brought up by the friction of the standby cutter rubber roller. However, this device only adds the function of two self-rotating cutters, which can improve the automatic reversing problem of the online double-cutting machine. However, since two independent and self-rotating small turntable short-cutting units are set on a large turntable, the size and weight of the device are relatively large, and an isolation mechanism cannot be set between the two small turntable short-cutting units due to the in-situ switching position of the yarn. When switching, the standby short-cutting unit has been started to operate as a double unit, and the working short-cutting unit rotates 180° with the large turntable while cutting, that is, the working short-cutting unit will pass over the standby short-cutting unit while cutting. This causes the yarn grains cut by the working short-cutting unit to be repeatedly cut by the standby short-cutting unit, and the short-cut yarn grains will be splashed everywhere during the cutting and rotation process, resulting in uneven length of the short-cut yarn grains and increased hairiness, which reduces the quality.

[0008] Therefore, the existing online short cutting machines have technical problems such as difficulty in changing heads, complex equipment structure, serious waste and pollution, and unstable quality. Utility Model Content

[0009] In view of this, the present application provides an automatic top-up continuous online short cutting machine to solve all or part of the technical problems described in the background technology part of the present application.

[0010] The innovative idea of ​​this application is to complete the circulation of two short-cutting units by lifting and lowering and stretching forward and backward, so as to solve the technical problems existing in the technical solution of completing the unit circulation by rotating the wheel in the prior art: 1. The process of automatic yarn feeding during unit switching is difficult and the actuator structure is complex and inefficient; 2. Short-cut yarn particles are easily splashed everywhere during unit switching, which wastes materials and causes environmental pollution.

[0011] This application provides solutions to solve the technical problems:

[0012] An automatic head-loading continuous online short cutting machine, comprising:

[0013] A rack, on which a working station and a standby station are arranged;

[0014] The first short-cutting unit;

[0015] Second short-cutting unit;

[0016] The first telescopic mechanism is used to drive the first chopping unit to perform forward and backward telescopic movement;

[0017] A first lifting mechanism, used for driving the first telescopic mechanism to move up and down;

[0018] The second telescopic mechanism is used to drive the second chopping unit to perform forward and backward telescopic movement;

[0019] The second lifting mechanism is used to drive the second telescopic mechanism to move up and down;

[0020] The first lifting mechanism and the second lifting mechanism are arranged on the frame;

[0021] The first telescopic mechanism and the second telescopic mechanism are respectively arranged on the first lifting mechanism and the second lifting mechanism;

[0022] The first chopping unit and the second chopping unit are respectively arranged on the first telescopic mechanism and the second telescopic mechanism.

[0023] Unit cycle description: The first short-cutting unit can perform forward and backward telescopic movement under the action of the first telescopic mechanism, and can perform up and down lifting movement together with the first telescopic mechanism under the action of the first lifting mechanism; the second short-cutting unit can perform forward and backward telescopic movement under the action of the second telescopic mechanism, and can perform up and down lifting movement together with the second telescopic mechanism under the action of the second lifting mechanism; thus, the unit cycle can be completed through the following steps or actions:

[0024] The short-cutting unit on the standby station is retracted backwards and moved to the rear of the standby station to avoid the rising space of the short-cutting unit on the working station;

[0025] The short-cutting unit at the working station rises to the standby station;

[0026] The short-cutting unit on the standby station descends to the rear of the working station;

[0027] The short-cutting unit on the standby station extends forward to the working station.

[0028] The use of unit lifting and telescopic movements to complete the cycle of the two units can simplify the process difficulty of automatic yarn feeding and raising, reduce the structural complexity and volume weight of the short-cutting unit, improve the efficiency and completion accuracy of yarn feeding and unit switching, and make it possible to achieve continuous and uninterrupted short-cut production during the unit cycle and to recycle the short-cut yarn particles formed in the yarn feeding and raising process.

[0029] Preferably, the first lifting mechanism and the second lifting mechanism are respectively connected by a ring chain pendant, so that the first lifting mechanism and the second lifting mechanism are balanced with each other.

[0030] Preferably, the first telescopic mechanism and the second telescopic mechanism are connected by a ring chain pendant to reduce the load of the drive system through suspended self-balancing.

[0031] Preferably, the ascending movement of the short-cutting unit at the working station and the descending movement of the short-cutting unit at the standby station are performed synchronously.

[0032] Preferably, the automatic top-loading continuous online short cutting machine also includes an arc-shaped yarn beating device; the arc-shaped yarn beating device includes a beating motor, a driving gear, an annular rack, an upper limit guide wheel, a lower limit guide wheel, and a yarn beating wheel; the beating motor is arranged on the frame and is transmission-connected to the driving gear, the annular rack is arranged between the upper limit guide wheel and the lower limit guide wheel and meshes with the driving gear, and the yarn beating wheel is arranged on the annular rack; when the beating motor is started, it can drive the annular rack through the driving gear to make an arc movement between the upper limit guide wheel and the lower limit guide wheel, so that the yarn beating wheel can accurately feed the yarn into the yarn cutting point according to the arc trajectory. Further preferably, the yarn beating wheel is hinged on the annular rack; the arc-shaped yarn beating device also includes a yarn beating seat, the upper limit guide wheel and the lower limit guide wheel are both arranged on the yarn beating seat, and the yarn beating seat is arranged on the frame. Further preferably, at least one side of the portion of the annular rack for cooperating with the upper and lower limit guide wheels is provided with a rack guide groove; the upper limit guide wheel and / or the lower limit guide wheel are fitted in the rack guide groove to increase the smoothness of the yarn beating action.

[0033] The use of an arc-shaped beating device to complete automatic yarn feeding enables the beating wheel to accurately press the yarn into the yarn cutting point between the upper rubber roller and the knife roller of the short-cutting unit according to the arc trajectory of the upper rubber roller of the short-cutting unit.

[0034] Preferably, the automatic head-up continuous online short-cutting machine also includes a yarn feeding and splitting swinging mechanism; the yarn feeding and splitting swinging mechanism includes a cycloid motor, a cycloid shaft, a cycloid seat, an upper swing rod, a lower swing rod, a splitting yarn guide wheel, a pulling cylinder, a yarn feeding pulling rod, and a pulling shaft; the cycloid motor is arranged on the frame, the cycloid seat is connected to the cycloid motor through the cycloid shaft, and the upper swing rod, the lower swing rod, and the splitting yarn guide wheel are all arranged on the cycloid seat; the pulling cylinder is arranged on the frame, and the yarn feeding pulling rod is connected to the pulling cylinder through the pulling shaft.

[0035] The yarn feeding, beam splitting and swinging mechanism is used to complete the yarn feeding, beam splitting, swinging and pushing and pulling functions.

[0036] Preferably, the automatic yarn feeding continuous online short cutting machine also includes an automatic yarn feeding mechanism; the automatic yarn feeding mechanism includes an upper yarn wheel, an upper yarn wheel motor, an upper yarn hook, and an upper yarn hook driving device; the upper yarn wheel motor is arranged on the frame and is transmission-connected to the upper yarn wheel, the upper yarn hook is arranged on the upper yarn wheel and can be extended and retracted along the axial direction of the upper yarn wheel under the action of the upper yarn hook driving device. Further preferably, the upper yarn hook driving device includes a cylinder shaft, a cylinder head, a piston shaft, and an upper yarn hook reset spring; a cylinder cavity is provided on the cylinder shaft; the cylinder head, the piston shaft, and the cylinder cavity constitute a cylinder structure, and the upper yarn hook reset spring is arranged between the piston of the piston shaft and the cylinder head; the upper yarn hook is fixed on the piston shaft, and compressed air is supplied, so that the upper yarn hook can extend along the axial direction of the upper yarn wheel, and when the compressed air is disconnected, the upper yarn hook can retract along the axial direction of the upper yarn wheel.

[0037] The automatic yarn feeding mechanism is used to cooperate with the slow-pull traction mechanism during the automatic yarn feeding process, and completes the yarn capture and traction functions through the yarn feeding hook. The yarn beating wheel of the arc-shaped yarn beating device quickly and accurately feeds the yarn to the yarn cutting point between the rubber roller and the knife roller of the short-cutting unit.

[0038] Preferably, the automatic head-up continuous online short-cutting machine also includes a yarn feeding transition mechanism; the yarn feeding transition mechanism includes a lower transition mechanism and an upper transition mechanism; the lower transition mechanism includes at least one lower transition wheel; and the upper transition mechanism includes at least one upper transition wheel.

[0039] The upper transition wheel and the lower transition wheel are used to complete the yarn transition and guiding functions during the automatic yarn feeding process.

[0040] Preferably, the lower transition mechanism includes a first lower transition wheel, a second lower transition wheel, a flip motor, and a flip lever arm; the first lower transition wheel and the second lower transition wheel are fixed on the flip lever arm, and the flip lever arm is connected to the flip motor via a transmission.

[0041] The flip lever arm and the flip motor can drive the first lower transition wheel and the second lower transition wheel to rotate cyclically or adjust the tilt angles of the first lower transition wheel and the second lower transition wheel through rotation.

[0042] Preferably, the upper transition mechanism includes an upper transition wheel, a telescopic cylinder, and a telescopic seat plate; the telescopic seat plate is arranged on the piston rod of the telescopic cylinder, and the upper transition wheel is arranged on the telescopic seat plate.

[0043] The telescopic cylinder and the telescopic seat plate can drive the upper transition wheel to be close to the rubber roller of the short cutting unit for easy loading or away from the rubber roller of the short cutting unit, so that the efficiency and accuracy of yarn loading are more guaranteed.

[0044] Preferably, the automatic yarn-joining continuous online short-cutting machine also includes an active yarn-joining and yarn-sucking mechanism; the active yarn-joining and yarn-sucking mechanism includes a first active yarn-joining mechanism, a second active yarn-joining mechanism, a yarn-sucking head, a yarn-sucking telescopic pipe, and a yarn-sucking tube driving component; the yarn-sucking tube driving component is arranged on the frame, and the yarn-sucking head is arranged on the yarn-sucking telescopic pipe and can move up and down under the action of the yarn-sucking tube driving component; the first active yarn-joining mechanism and the second active yarn-joining mechanism each include a yarn-joining disc, a yarn-unloading door, a yarn-unloading door driving component, and an interlocking mechanism; the yarn-joining disc is provided with a yarn inlet and a yarn-suction port; the interlocking mechanism includes an interlocking cylinder and an interlocking rod; the yarn-unloading door is hinged on the yarn-joining disc and can be opened or closed under the action of the yarn-unloading door driving component, and the interlocking rod can extend or retract into the frame under the action of the interlocking cylinder. Further preferably, the yarn-sucking tube driving component is a slide cylinder. Further preferably, the yarn-unloading door driving component is a telescopic cylinder.

[0045] The first and second active yarn splicing mechanisms are respectively located on the first and second chopping units and are used to recover the replacement yarn produced during the yarn feeding process when the units switch. The yarn suction head, telescopic yarn suction pipe, and yarn suction tube drive components are shared by the first and second active yarn splicing mechanisms. When the chopping unit at the working station ascends, the yarn suction head and telescopic yarn suction pipe, driven by the yarn suction tube drive components, rise together with the active yarn splicing mechanism. The current chopping unit ascends and circulates through the workstation while chopping, while the yarn suction head rises and absorbs the replacement yarn, thus avoiding material waste and environmental pollution. When the circulating chopping unit reaches the standby workstation, the yarn suction head and telescopic yarn suction pipe, driven by the yarn suction tube drive components, return to the working workstation. The yarn suction head and telescopic yarn suction pipe are interlocked with the current chopping unit during the ascending process. After the interlock is released, they descend to the working workstation and then dock with the yarn suction port of the splicing disk. Moreover, when the yarn suction head and the yarn suction telescopic pipe are rising to suck the yarn, the yarn unloading door is in a closed state under the action of the yarn unloading door driving component so that the yarn to be replaced generated during the cycle of the unit can all be sucked into the telescopic pipe; after the yarn suction head and the yarn suction telescopic pipe are reset to the working position, the yarn unloading door is in an open state under the action of the yarn unloading door driving component so that the normally short-cut finished yarn can fall directly onto the conveyor line through the yarn unloading door.

[0046] Unlike the prior art in which unit rotation is achieved by rotating a wheel, since the unit circulation in this application is achieved by up and down lifting and forward and backward telescopic movement, the short-cut unit remains in an unchanged position during the circulation process, and the work station will not tilt, invert or hang upside down. Therefore, the replacement yarn produced during the unit circulation process is also a normal finished yarn and can be recycled through an active yarn receiving and suction mechanism.

[0047] Preferably, the first and second chopping units each include a blade roller, a blade roller swing cylinder, a rubber roller, a rubber roller drive motor, a chopping unit frame, and a blade roller connecting rod mechanism. The blade roller, blade roller swing cylinder, rubber roller, and rubber roller drive motor are all mounted on the chopping unit frame, with the rubber roller drive motor directly connected to the rubber roller. The blade roller connecting rod mechanism is eccentrically connected to the blade roller, and the blade roller swing cylinder is transmission-connected to the blade roller connecting rod mechanism. Furthermore, preferably, the chopping unit frames of the first and second chopping units each utilize a symmetrical angle-square mechanism to ensure that the units can avoid each other's movement space during circulation.

[0048] The knife roller swing cylinder can drive the knife roller to swing through the knife roller connecting rod mechanism to approach or leave the rubber roller, and the rubber roller drive motor can drive the rubber roller to rotate to generate short cutting force.

[0049] Preferably, the first and second chopping units can also adopt an active blade roller and passive rubber roller solution. Each of the first and second chopping units includes a blade roller, a blade roller drive motor, a rubber roller, a rubber roller swing cylinder, a chopping unit frame, and a rubber roller connecting rod mechanism. The blade roller, blade roller drive motor, rubber roller, and rubber roller swing cylinder are all mounted on the chopping unit frame. The blade roller drive motor is directly connected to the blade roller. The rubber roller swing cylinder can drive the rubber roller to swing toward or away from the blade roller via the rubber roller connecting rod mechanism. The blade roller drive motor can drive the blade roller to rotate to generate a chopping force.

[0050] Preferably, the first short-cutting unit and the second short-cutting unit also include a rubber roller grinding mechanism; the rubber roller grinding mechanism includes a grinding head, a grinding head motor, an eccentric swinging device, and a grinding head swinging cylinder; the grinding head swinging cylinder is arranged on the short-cutting group frame and is transmitted to the eccentric swinging device, and the grinding head motor is arranged on the eccentric swinging device and is transmitted to the grinding head.

[0051] The rubber roller grinding mechanism is used to complete the grinding and maintenance of the rubber roller online. The grinding head can press or loosen the rubber roller through the eccentric swing device and the grinding head swing cylinder.

[0052] Preferably, the first lifting mechanism and the second lifting mechanism both include a lifting screw slide module, and the first telescopic mechanism and the second telescopic mechanism are respectively arranged on the lifting slides of the corresponding lifting screw slide modules, and can perform up and down lifting movements under the action of the lifting screw slide modules. Further preferably, the spiral directions of the lifting screws of the first lifting mechanism and the second lifting mechanism are opposite and are connected through a synchronous belt. The first lifting mechanism and the second lifting mechanism are driven by a lifting motor. When the lifting motor is started, the lifting and lowering synchronization of the two short-cutting units can be achieved, that is, the rise of one unit and the descent of the other unit can be synchronized.

[0053] Preferably, the first telescopic mechanism and the second telescopic mechanism both include a telescopic screw slide module; the two sets of telescopic screw slide modules are respectively arranged on the lifting slides of the corresponding lifting screw slide modules, and the first short cutting machine unit and the second short cutting machine unit are respectively arranged on the telescopic slides of their respective telescopic screw slide modules.

[0054] Therefore, the two short cutting units can not only perform telescopic movement forward and backward under the action of their respective telescopic screw slide modules, but also perform up and down movement together with the telescopic screw slide module under the action of the lifting screw slide module.

[0055] Preferably, the automatic head-up continuous online short cutting machine also includes an offset transition yarn guide mechanism; the offset transition yarn guide mechanism includes a fixed plate, an offset plate, and an offset transition yarn guide wheel; the offset plate is arranged on the fixed plate and can slide on the fixed plate, and the offset transition yarn guide wheel is arranged on the offset plate.

[0056] The offset transition yarn guide mechanism is used to guide the yarn under the leaking plate that needs to be guided to the side of the yarn center line of normal short cutting, so as to avoid the yarn guiding process affecting the normal short cutting production.

[0057] Preferably, the automatic head-loading continuous online short cutting machine also includes an automatic yarn feeding mechanism; the automatic yarn feeding mechanism includes a yarn transport guide rail, a left-right translation device, a yarn feeding lifting device, a front-back translation device, and a yarn clamping device; the left-right translation device is arranged on the yarn transport guide rail, the yarn feeding lifting device is arranged on the left-right translation device, the front-back translation device is arranged on the yarn feeding lifting device, and the yarn clamping device is arranged on the front-back translation device; the yarn clamping device can clamp or loosen the yarn, and can perform front-back translation movement, left-right translation movement, and vertical lifting movement under the action of the left-right translation device, the yarn feeding lifting device, and the front-back translation device. Further preferably, the yarn clamping device is a pneumatic clamping claw.

[0058] When a certain guillotine needs to lead the yarn to the top for short cutting, the offset transition yarn guide mechanism first guides the yarn under the guillotine to the outside of the short cutting yarn center line, and then the automatic yarn guide mechanism pulls the yarn to the top yarn of the short cutting unit.

[0059] Preferably, the automatic head-loading continuous online short-cutting machine further includes a slow-pull traction mechanism, which includes an active slow-pull roller, a driven slow-pull roller, and a slow-pull motor. The active slow-pull roller and the driven slow-pull roller can roll relative to each other under the action of the slow-pull motor to clamp and pull the yarn.

[0060] The slow-pull traction mechanism is used to pull the yarn when the short-cut yarn is being fed into the short-cut yarn cutting machine. Please refer to the Chinese patent: A slow-pull automatic feeding and online non-cut yarn transition yarn feeding mechanism (publication number CN211141896U).

[0061] The control method of the automatic head-up continuous online short cutting machine disclosed in the present application includes the following process steps:

[0062] STEP01 Yarn offset step: First, the operator pulls out the offset transition yarn guide wheel under the leak plate that needs to be cut, and presses the start button under this leak plate. The automatic yarn feeding mechanism and slow pull mechanism of the continuous online short cutting machine are started.

[0063] In STEP02, the operator guides the yarn tow downward after handling the leak plate. The yarn tow passes through the oiler and the offset transition guide wheel and enters the yarn clamping device. The yarn clamping device of the automatic yarn guiding mechanism pulls the yarn to the yarn feeding and splitting swinging mechanism at the inlet of the continuous online short cutting machine. The yarn clamping device continues to pass the yarn around the lower transition mechanism, then goes up around the upper transition mechanism and turns to the upper yarn wheel on the right. After passing the rotating upper yarn wheel, the yarn is finally placed in the slow pulling mechanism for synchronous yarn pulling and slow pulling.

[0064] STEP03: In the yarn introduction step, the rubber roller and the knife roller are pressed together and started to run. The upper yarn wheel instantly opens the upper yarn hook to hook the yarn and speed up. During the speed-up process, the yarn feeding puller pulls the yarn to the center surface of the rubber roller and the knife roller. When the set linear speed value is reached, the arc-shaped yarn beating device presses the yarn down between the rubber roller and the knife roller. The pressing of the yarn beating wheel will increase the wrap angle between the yarn and the rubber roller and the friction force will increase. At this time, the upper yarn wheel instantly decelerates to form a rubber roller linear speed faster than the upper yarn wheel linear speed, so that the yarn is brought into the two-roller yarn cutting point and enters short cutting according to the rubber roller;

[0065] When the second shroud is cutting yarn or a certain shroud is breaking yarn midway, the machine can directly enter STEP01 yarn offset step without stopping the machine and cutting and adding yarn at the same time. The operator then pulls out the offset transition yarn guide wheel under the shroud that needs to be cut short, presses the start button under the shroud to start the yarn adding wheel and the slow pulling mechanism, and then enters STEP02 automatic yarn introduction step and STEP03 yarn introduction and adding yarn step;

[0066] STEP04 unit cycle step, first, the first telescopic mechanism or the second telescopic mechanism moves the short-cutting unit at the standby position to the rear end of the frame, at this time the two short-cutting units are arranged one in front and one behind; the yarn unloading door of the yarn receiving disk of the working short-cutting unit at the working position is controlled to close by the yarn unloading door driving component, and at the same time the interlocking cylinder drives the interlocking rod to extend the frame to interlock the yarn suction telescopic pipe and the yarn receiving disk to follow the working short-cutting unit and rise synchronously with the yarn, and the yarn suction port on the yarn receiving disk and the yarn suction telescopic pipe remain docked; the two short-cutting units synchronously and quickly change positions up and down, and the working short-cutting unit cuts and rises while the yarn suction telescopic pipe takes the chopped yarn in the yarn receiving disk After the two short-cutting units are swapped into place, the standby short-cutting unit quickly moves forward to the working station and starts running and opens the yarn unloading door of the yarn receiving disk. At this time, the yarn is waiting while cutting on the upper working short-cutting unit; then the yarn beating wheel of the arc-shaped yarn beating device beats the yarn from the left side of the yarn between the two rubber rollers to the right side, and the yarn is pressed into the yarn cutting position of the two rollers along the arc of the rubber roller according to the trajectory of the yarn beating wheel; at the same time, the speed of the upper short-cutting unit drops slightly to produce a speed difference, so that the rubber roller brings the yarn to the yarn cutting point through friction; finally, the interlocking cylinder drives the interlocking rod to retract, and the yarn suction tube driving component with the yarn suction telescopic pipe descends to dock with the yarn suction port of the yarn receiving disk of the current working short-cutting unit.

[0067] Beneficial technical effects:

[0068] 1. This application completes the cycle of the unit through the lifting and telescopic movement of the two short-cutting units. The short-cutting work is uninterrupted during the cycle of the unit, thereby avoiding the impact on the leakage plate operation and reducing material waste and shutdowns during the cycle of the unit. At the same time, since the unit does not need to be flipped or rotated during the cycle, the rubber roller, knife roller and other components or assemblies of the short-cutting unit are lifted or telescoped in situ during the cycle of the unit, which can also avoid the short-cutting unit from tilting, inverting or hanging upside down during the flipping process, which is conducive to reducing the difficulty of yarn feeding and yarn feeding head replacement operations, simplifying the structural complexity of the short-cutting unit, and improving the equipment operation efficiency and operation completion accuracy.

[0069] 2. This application uses the lifting and telescopic movements of two short-cutting units to complete the cycle of the unit, which can minimize the volume and weight and improve the degree of automation and continuous production.

[0070] 3. This application adopts an active yarn joining and suction mechanism, which can perform a fully closed recovery process on the chopped yarns produced during the unit circulation process. On the one hand, it can avoid the chopped yarns being repeatedly chopped by two chopped units and affecting the product quality, and at the same time, it can also avoid the generation of fine yarn particles and causing environmental pollution.

[0071] 4. The present application completes automatic yarn feeding through an arc-shaped yarn beating device. The yarn beating wheel can accurately press the yarn into the yarn cutting point between the upper rubber roller and the knife roller of the short-cutting unit according to the arc-shaped trajectory of the upper rubber roller of the short-cutting unit, which is beneficial to increase the contact angle and contact time between the glass fiber yarn and the short-cutting rubber roller during the yarn beating process, and improve the completion efficiency of feeding or changing the head yarn and the yarn feeding accuracy.

[0072] The technical solutions and technical effects of this application are described in detail below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0073] Figure 1 : Front view of the automatic head-loading continuous online short cutting machine;

[0074] Figure 2 : Stereoscopic image of the automatic head-loading continuous online short cutting machine;

[0075] Figure 3 : A three-dimensional structural diagram of the first short-cutting unit from the front perspective;

[0076] Figure 4 : Rear view of the first short-cutting unit;

[0077] Figure 5 : Schematic diagram of the telescopic screw slide module structure;

[0078] Figure 6 : Schematic diagram of the lifting screw slide module structure;

[0079] Figure 7 : Schematic diagram of the arc-shaped beating device structure;

[0080] Figure 8 : Exploded diagram of the automatic yarn feeding mechanism structure;

[0081] Figure 9 : 3D structural diagram of automatic yarn feeding mechanism;

[0082] Figure 10 : Schematic diagram of the structure of the yarn feeding beam splitting swing mechanism and the yarn feeding transition mechanism;

[0083] Figure 11 : Schematic diagram of the active yarn receiving and suction mechanism from the front view;

[0084] Figure 12 : Schematic diagram of the active yarn receiving and absorbing mechanism from the rear perspective;

[0085] Figure 13 : Schematic diagram of the offset transition yarn guide mechanism structure;

[0086] Figure 14 : Front view of automatic yarn feeding mechanism;

[0087] Figure 15: Side view of automatic yarn feeding mechanism;

[0088] Figure 16 : Schematic diagram of slow pull traction mechanism.

[0089] Icon Description:

[0090] 10-frame, 20-first short chopping unit, 30-second short chopping unit, 40-first telescopic mechanism, 50-first lifting mechanism, 60-second telescopic mechanism, 70-second lifting mechanism, 80-arc-shaped yarn beating device, 90-yarn feeding and splitting swinging mechanism, 100-automatic yarn feeding mechanism, 200-yarn feeding transition mechanism, 300-active yarn receiving and suction mechanism, 400-offset transition yarn guide mechanism, 500-automatic yarn leading mechanism, 600-bucket, 700-oiler, 800-bunching wheel, 900-slow pulling mechanism;

[0091] 210- knife roller, 220- knife roller swing cylinder, 230- rubber roller, 240- rubber roller drive motor, 260- short cutting group frame, 270- knife roller connecting rod mechanism, 280- rubber roller grinding mechanism;

[0092] 2810-grinding head, 2820-grinding head motor, 2830-eccentric swing device, 2840-grinding head swing cylinder;

[0093] 410- telescopic screw slide module;

[0094] 510-lifting screw slide module;

[0095] 810- beating motor, 820- driving gear, 830- ring rack, 8310- rack guide groove, 840- upper limit guide wheel, 850- lower limit guide wheel, 860- beating wheel, 870- beating seat;

[0096] 910-cycloid shaft, 920-cycloid seat, 930-upper swing rod, 940-lower swing rod, 950-beam guide wheel, 960-yarn feed pull rod, 970-pull shaft;

[0097] 1010 - upper yarn wheel, 1020 - upper yarn wheel motor, 1030 - upper yarn hook, 1040 - upper yarn hook driving device;

[0098] 1011-cylinder shaft hole, 1012-upper yarn groove, 1013-upper yarn hook receiving position;

[0099] 1041-cylinder shaft, 1042-cylinder head, 1043-piston shaft, 1044-upper yarn hook return spring, 1045-upper yarn disc;

[0100] 2010-lower transitional agency, 2020-upper transitional agency;

[0101] 2011-lower transition wheel, 2012-flip lever arm;

[0102] 2021-upper transfer wheel, 2022-retractable seat plate;

[0103] 3010 - first active yarn joining mechanism, 3020 - second active yarn joining mechanism, 3030 - yarn suction head, 3040 - yarn suction telescopic pipe, 3050 - yarn suction tube driving component;

[0104] 3011- yarn receiving disc, 3012- yarn unloading door, 3013- yarn unloading door driving component, 3014- interlocking mechanism;

[0105] 3015-yarn inlet, 3016-yarn suction port, 3017-interlocking cylinder, 3018-interlocking rod;

[0106] 4010-fixed plate, 4020-offset plate, 4030-offset transition guide wheel;

[0107] 5010- Yarn guide rail, 5020- Yarn clamping device, 5030- Left and right translation frame, 5040- Left and right translation wheels, 5050- Left and right translation motor, 5060- Lifting motor, 5070- Threaded lifting component, 5080- Lifting platform, 5090- Front and rear translation frame, 5091- Front and rear translation motor, 5092- Front and rear translation gear, 5093- Front and rear translation rack;

[0108] 9010-active slow pull roller, 9020-driven slow pull roller, 9030-slow pull motor. DETAILED DESCRIPTION

[0109] Direction description: The front, back, left, and right directions are the ones facing the machine.

[0110] See also Figure 1 and Figure 2 The automatic head-up continuous online short cutting machine disclosed in this application comprises:

[0111] The frame 10 is provided with a working station or a short-cutting station at the lower portion and a standby station at the upper portion;

[0112] The first short-cutting unit 20, Figure 1 and Figure 2 The center is located at the work station;

[0113] The second short-cutting unit 30, Figure 1 and Figure 2 The middle is located in the spare station;

[0114] The first telescopic mechanism 40 is used to drive the first chopping unit 20 to perform telescopic movement forward and backward;

[0115] The first lifting mechanism 50 is used to drive the first telescopic mechanism 40 to move up and down;

[0116] The second telescopic mechanism 60 is used to drive the second chopping unit 30 to perform telescopic movement forward and backward;

[0117] The second lifting mechanism 70 is used to drive the second telescopic mechanism 60 to move up and down;

[0118] The first lifting mechanism 50 and the second lifting mechanism 70 are respectively arranged on the left and right sides of the frame 10;

[0119] The first telescopic mechanism 40 and the second telescopic mechanism 60 are respectively arranged on the first lifting mechanism 50 and the second lifting mechanism 70;

[0120] The first chopping unit 20 and the second chopping unit 30 are respectively disposed on the first telescopic mechanism 40 and the second telescopic mechanism 60 .

[0121] in:

[0122] See also Figure 3 and Figure 4 The first chopping unit 20 and the second chopping unit 30 both include a knife roller 210, a knife roller swing cylinder 220, a rubber roller 230, a rubber roller drive motor 240, a chopping unit frame 260, a knife roller connecting rod mechanism 270, and a rubber roller grinding mechanism 280.

[0123] The knife roller 210, the knife roller swing cylinder 220, the rubber roller 230, and the rubber roller drive motor 240 are all arranged on the short-cutting group frame 260. The rubber roller drive motor 240 is connected to the rubber roller 230, the knife roller connecting rod mechanism 270 is eccentrically connected to the knife roller 210, and the knife roller swing cylinder 220 is connected to the knife roller connecting rod mechanism 270; the rubber roller 230 can rotate under the action of the rubber roller drive motor 240 to generate a short-cutting force, and the knife roller 210 can swing under the action of the knife roller swing cylinder 220 and the knife roller connecting rod mechanism 270 to tighten or loosen the rubber roller 230.

[0124] The rubber roller grinding mechanism 280 includes a grinding head 2810 , a grinding head motor 2820 , an eccentric swing device 2830 , and a grinding head swing cylinder 2840 .

[0125] The grinding head swing cylinder 2840 is mounted on the short-cutting unit frame 260 and is connected to the eccentric swing device 2830. The grinding head motor 2820 is mounted on the eccentric swing device 2830 and is connected to the grinding head 2810. The grinding head 2810 can compress or loosen the rubber roller 230 under the action of the eccentric swing device 2830 and the grinding head swing cylinder 2840, and can also rotate to generate a grinding force under the action of the grinding head motor 2820. The grinding head 2810 preferably uses a diamond grinding wheel.

[0126] The chopping group frames of the first chopping unit 20 and the second chopping unit 30 respectively adopt a left-right symmetrical square frame mechanism so that they can avoid each other's movement space when the units circulate.

[0127] In a variation of the embodiment of the present application, the first chopping unit 20 and the second chopping unit 30 may also adopt an active blade roller and passive rubber roller solution. The first chopping unit 20 and the second chopping unit 40 each include a blade roller, a blade roller drive motor, a rubber roller, a rubber roller swing cylinder, a chopping unit frame, a rubber roller connecting rod mechanism, and a rubber roller grinding mechanism. The blade roller, blade roller drive motor, rubber roller, and rubber roller swing cylinder are all mounted on the chopping unit frame. The blade roller drive motor is directly connected to the blade roller. The rubber roller swing cylinder can drive the rubber roller to swing toward or away from the blade roller via the rubber roller connecting rod mechanism. The blade roller drive motor can drive the blade roller to rotate to generate a chopping force.

[0128] See also Figure 5 and Figure 6 The first lifting mechanism 50 and the second lifting mechanism 70 both include a lifting screw slide module 510 , and the first telescopic mechanism 40 and the second telescopic mechanism 60 both include a telescopic screw slide module 410 .

[0129] A screw slide module generally includes a screw, a slide (or nut seat), and a screw motor. The screw motor rotates the screw, which in turn drives the slide back and forth on the screw. The lifting screw slide module 510 refers to a vertically arranged screw slide module used to drive other components or parts to move up and down. The telescopic screw slide module 410 refers to a screw slide module used to drive other components or parts to move forward and backward and telescopically. The structure and usage of the screw slide module are not detailed here.

[0130] Two sets of lifting screw slide modules 510 are respectively arranged on the left and right sides of the frame 10, and two sets of telescopic screw slide modules are respectively arranged on the upper and lower lifting slides of the lifting screw slide modules 510 on the left and right sides of the frame 10, and the first short cutting unit 20 and the second short cutting unit 30 are respectively arranged on the front and rear telescopic slides of the corresponding telescopic screw slide module 410.

[0131] The first telescopic mechanism 40 and the second telescopic mechanism 60 can move up and down under the action of the corresponding lifting screw slide module 510, and the first chopping unit 20 and the second chopping unit 30 can move forward and backward under the action of the corresponding telescopic screw slide module 410. Therefore, the two chopping units can not only move forward and backward under the action of their respective telescopic screw slide modules, but also move up and down together with the telescopic screw slide module under the action of the lifting screw slide module.

[0132] Unit cycle action:

[0133] The short-cutting unit on the standby station is retracted backwards and moved to the rear of the standby station to avoid the rising space of the short-cutting unit on the working station;

[0134] The short-cutting unit at the working station rises to the standby station;

[0135] The short-cutting unit on the standby station descends to the rear of the working station;

[0136] The short-cutting unit on the standby station extends forward to the working station.

[0137] Compared with the unit rotation scheme completed by wheel rotation in the prior art, the present application uses the unit lifting and telescopic movement to complete the unit cycle, which can simplify the process difficulty of automatic yarn feeding (the head does not need to be tilted, rotated or inverted), reduce the structural complexity of the short-cutting unit (the yarn feeding and yarn changing actuators of the rubber roller and the knife roller are simplified), improve the efficiency and completion accuracy of yarn feeding and unit switching, and make continuous and uninterrupted short cutting and recycling of the short-cut yarn particles formed during the unit cycle possible.

[0138] In a variant embodiment of the present application, the lifting screws of the first and second lifting mechanisms 50 and 70 have opposite helical directions (for example, one rotates counterclockwise and the other rotates counterclockwise) and are connected via a synchronous belt. The first and second lifting mechanisms 50 and 70 are driven in tandem by a single lifting motor. When the motor is activated, the two chopping units can be raised and lowered synchronously, meaning one unit ascends while the other descends. This linkage scheme improves unit cycle efficiency and reduces equipment costs.

[0139] In a modified embodiment of the present application, the first lifting mechanism 50 and the second lifting mechanism 70 are respectively connected by a ring chain pendant, so that the first lifting mechanism 50 and the second lifting mechanism 70 can achieve suspended self-balancing.

[0140] In a modified embodiment of the present application, the first telescopic mechanism 40 and the second telescopic mechanism 60 are connected by a ring chain pendant to reduce the load of the drive system through suspended self-balancing.

[0141] Please refer to Figure 1 and Figure 7 The automatic head-loading continuous online short cutting machine also includes an arc-shaped yarn beating device 80, which includes a beating wheel motor 810, a driving gear 820, an annular rack 830, an upper limit guide wheel 840, a lower limit guide wheel 850, a beating wheel 860, and a beating seat 870.

[0142] The beating motor 810 is mounted on and within the frame 10 and is transmission-connected to the driving gear 820. A beating seat 870 is mounted on and outside the frame 10. An upper limit guide wheel 840 and a lower limit guide wheel 850 are disposed within the beating seat 870 and arranged vertically. An annular rack 830 is disposed between the upper limit guide wheel 840 and the lower limit guide wheel 850 and meshes with the driving gear 820. A beating wheel 860 is hingedly connected to the annular rack 830.

[0143] When the beating motor 810 is started, it can drive the annular rack 830 to move in an arc between the upper limit guide wheel 840 and the lower limit guide wheel 850 through the driving gear 820, so that the beating wheel 860 can feed the yarn into the yarn cutting point between the knife roller 210 and the rubber roller 230 according to the arc trajectory of the rubber roller 230.

[0144] The use of an arc-shaped beating device to complete automatic yarn feeding enables the beating wheel to accurately press the yarn into the yarn cutting point between the upper rubber roller and the knife roller of the short-cutting unit according to the arc-shaped trajectory of the upper rubber roller of the short-cutting unit, which is beneficial to increase the contact angle and contact time between the glass fiber yarn and the short-cutting rubber roller during the beating process, and improve the completion efficiency of the yarn feeding or yarn replacement and the yarn feeding accuracy.

[0145] In a variation of the embodiment of the application, a rack guide groove 8310 is provided on at least one side of the portion of the annular rack 830 for cooperating with the upper and lower limit guide wheels; the upper limit guide wheel 840 and / or the lower limit guide wheel 850 are engaged in the rack guide groove 8310 to increase the smoothness of the yarn beating action.

[0146] See also Figure 1 and Figure 10 The automatic head-loading continuous online short-cutting machine also includes a yarn feeding and splitting oscillating mechanism 90, which is used to complete the yarn feeding, splitting, cycloiding, and pushing and pulling functions. The yarn feeding and splitting oscillating mechanism 90 includes a cycloid motor, a cycloid shaft 910, a cycloid seat 920, an upper cycloid rod 930, a lower cycloid rod 940, a splitting yarn guide wheel 950, a pulling cylinder, a yarn feeding pulling rod 960, and a pulling shaft 970.

[0147] The cycloid motor is arranged in the frame 10, the cycloid seat 920 is connected to the cycloid motor through the cycloid shaft 910, and the upper cycloid rod 930, the lower cycloid rod 940, and the beam guide wheel 950 are all arranged on the cycloid seat 920; the cycloid motor can drive the cycloid seat 920 to swing to adjust the tension or inclination of the yarn.

[0148] The drawing cylinder is arranged in the frame 10, and the yarn feeding drawing rod 960 is connected to the drawing cylinder through the drawing shaft 970. The drawing cylinder can drive the yarn feeding drawing rod 960 to do telescopic movement back and forth to push the yarn.

[0149] See also Figure 1 、 Figure 8 、 Figure 9 The automatic yarn feeding continuous online short cutting machine also includes an automatic yarn feeding mechanism 100; the automatic yarn feeding mechanism 100 includes an upper yarn wheel 1010, an upper yarn wheel motor 1020, an upper yarn hook 1030, and an upper yarn hook driving device 1040.

[0150] The upper yarn wheel motor 1020 is set on the frame 10, and the upper yarn wheel motor 1020 is transmission-connected to the axle of the upper yarn wheel 1010. The upper yarn hook 1030 is set on the upper yarn wheel 1010 and can be extended and retracted back and forth along the axis of the upper yarn wheel 1010 under the action of the upper yarn hook driving device 1040.

[0151] The upper yarn hook driving device 1040 includes a cylinder shaft 1041, a cylinder head 1042, a piston shaft 1043, and an upper yarn hook return spring 1044; a cylinder cavity is provided on the cylinder shaft 1041; the cylinder head 1042, the piston shaft 1043, and the cylinder cavity constitute a cylinder structure; the upper yarn hook return spring 1044 is provided between the piston of the piston shaft 1043 and the cylinder head 1042; the upper yarn hook 1030 is fixed on the piston shaft 1043; when compressed air is supplied, the upper yarn hook 1030 can extend along the axial direction of the upper yarn wheel 1010, and when the compressed air is disconnected, the upper yarn hook 1030 can retract along the axial direction of the upper yarn wheel 1010.

[0152] The components are connected as follows: a cylinder shaft hole 1011 is provided in the center of the upper yarn wheel 1010, and a cylinder shaft 1041 is assembled in the cylinder shaft hole 1011 of the upper yarn wheel 1010. The upper yarn wheel 1010 and the cylinder shaft 1041 are fixedly connected and can rotate synchronously under the action of the upper yarn wheel motor 1020. The upper yarn wheel motor 1020 and the upper yarn wheel 1010 and the cylinder shaft 1041 can be connected to each other through a transmission shaft or a transmission belt.

[0153] The upper yarn hook 1030 is fixedly connected to the end of the piston shaft 1043 via the upper yarn disc 1045. The upper yarn wheel 1010 is provided with an upper yarn groove 1012 and an upper yarn hook accommodating position 1013; the upper yarn hook 1030 is located in the upper yarn hook accommodating position 1013. The upper yarn groove 1012 is an annular groove structure extending along the circumference of the upper yarn wheel 1010, and the upper yarn hook accommodating position 1013 is an oblique groove structure extending along the radial direction of the upper yarn wheel 1010.

[0154] The automatic yarn feeding mechanism 100 is used to cooperate with the slow-pull traction mechanism 900 during the automatic yarn feeding process, and completes the yarn capture and traction functions through the yarn feeding hook 1030, and the yarn beating wheel 860 of the arc-shaped yarn beating device 80 quickly and accurately feeds the yarn into the yarn cutting point located between the rubber roller and the knife roller of the short-cutting unit.

[0155] See also Figure 1 and Figure 10The automatic top-loading continuous online short-cutting machine also includes a yarn feeding transition mechanism 200; the yarn feeding transition mechanism 200 includes a lower transition mechanism 2010 and an upper transition mechanism 2020; the lower transition mechanism 2010 includes at least one lower transition wheel 2011; the upper transition mechanism 2020 includes at least one upper transition wheel 2021.

[0156] The upper transition wheel 2021 and the lower transition wheel 2011 are used to complete the transition and guiding functions of the yarn during the automatic yarn feeding process.

[0157] In one alternative embodiment, the lower transition wheel 2011 of the lower transition mechanism 2010 is divided into a first lower transition wheel and a second lower transition wheel. The lower transition mechanism 2010 also includes a flip motor and a flip lever arm 2012. The first and second lower transition wheels are fixed to the flip lever arm 2012, which is in turn connected to the flip motor. The flip lever arm 2012 and the flip motor can drive the first and second lower transition wheels to rotate cyclically or adjust the tilt angle of the first and second lower transition wheels (i.e., adjust the yarn transition and guidance direction) through rotation.

[0158] In a variant embodiment, the upper transition mechanism 2020 further includes a telescopic cylinder and a telescopic base plate 2022; the telescopic base plate 2022 is mounted on the piston rod of the telescopic cylinder, and the upper transition pulley 2021 is mounted on the telescopic base plate 2022. The telescopic cylinder and the telescopic base plate 2022 can drive the upper transition pulley 2021 to move closer to the rubber rollers of the chopping unit for easy insertion or away from the rubber rollers of the chopping unit, thereby ensuring greater efficiency and accuracy in yarn insertion.

[0159] See also Figure 1 、 Figure 11 、 Figure 12 The automatic yarn-loading continuous online short-cutting machine also includes an active yarn-joining and yarn-suctioning mechanism 300. The active yarn-joining and yarn-suctioning mechanism 300 includes a first active yarn-joining mechanism 3010, a second active yarn-joining mechanism 3020, a yarn-suctioning head 3030, a yarn-suctioning telescopic pipe 3040, and a yarn-suctioning tube drive component 3050. The yarn-suctioning tube drive component 3050 is disposed on the frame 10. The yarn-suctioning head 3030 is disposed on the yarn-suctioning telescopic pipe 3040 and is capable of vertical movement under the control of the yarn-suctioning tube drive component 3050. The yarn-suctioning tube drive component 3050 can be a slide cylinder, an oil cylinder, or a motor-screw slide module.

[0160] The first active yarn joining mechanism 3010 and the second active yarn joining mechanism 3020 each include a yarn joining disc 3011, a yarn unloading door 3012, a yarn unloading door driving component 3013, and an interlocking mechanism 3014. The yarn joining disc 3011 is provided with a yarn inlet 3015 and a yarn suction port 3016. The interlocking mechanism 3014 includes an interlocking cylinder 3017 and an interlocking rod 3018. The yarn unloading door driving component 3013 is provided on the yarn joining disc 3011, and its piston rod is hingedly connected to the yarn unloading door 3012. The yarn unloading door 3012 is hingedly connected to the yarn joining disc 3011 and can be opened or closed by the yarn unloading door driving component 3013. The interlocking rod 3018 can be extended or retracted into the frame 10 by the interlocking cylinder 3017. The yarn unloading door driving component 3013 can be a telescopic cylinder.

[0161] The first active yarn splicing mechanism 3010 and the second active yarn splicing mechanism 3020 are respectively disposed on the first and second chopping units 20 and 30, and are used to recover the replacement yarn produced when the units switch or cycle. The yarn suction head 3030, the yarn suction telescopic pipe 3040, and the yarn suction tube drive component 3050 are common components to the first and second active yarn splicing mechanisms 3010 and 3020. When the chopping unit at a workstation ascends, the yarn suction head 3030 and the yarn suction telescopic pipe 3040, driven by the yarn suction tube drive component 3050, rise together with the current active yarn splicing and suction mechanism. As the current chopping unit ascends and cycles through the workstation, the yarn suction head 3030 rises and absorbs the replacement yarn, thus avoiding material waste and environmental pollution. Unlike the prior art in which unit rotation is achieved by rotating a wheel, in this application, unit circulation is achieved by lifting and lowering and telescoping movements forward and backward, and the orientation of the short-cut unit remains unchanged during the circulation process. Therefore, the replacement yarn produced during the unit circulation process is also a normal finished yarn and can be recycled through an active yarn joining and suction mechanism.

[0162] When the circulating short-cutting unit reaches the standby position, the yarn suction head 3030 and the yarn suction telescopic pipe 3040 return to the working position under the control of the yarn suction tube drive component 3050. During the unit cycle, the yarn suction head 3030 and the yarn suction telescopic pipe 3040 interlock with the current short-cutting unit through the interlocking mechanism 3014 during the process of rising to absorb yarn. After the interlock is released, the yarn suction head 3030 descends to the working position and then docks with the yarn suction port 3016 of the yarn receiving disk. In addition, when the yarn suction head 3030 and the yarn suction telescopic pipe 3040 are in the process of rising to absorb the yarn, the yarn unloading door 3012 is in a closed state under the action of the yarn unloading door driving component 3013 so that all the chopped yarns generated during the unit circulation process can be sucked into the yarn suction telescopic pipe 3040; after the yarn suction head 3030 and the yarn suction telescopic pipe 3040 are reset to the working position, the yarn unloading door 3012 is in an open state under the action of the yarn unloading door driving component 3013 so that the normally chopped finished yarn can fall directly onto the conveyor line through the yarn unloading door 3012.

[0163] See also Figure 1 、 Figure 2 、 Figure 13 The automatic head-loading continuous online short cutting machine also includes an offset transition yarn guide mechanism 400; the offset transition yarn guide mechanism 400 includes a fixed plate 4010, an offset plate 4020, and an offset transition yarn guide wheel 4030; the offset plate 4020 is set on the fixed plate 4010 and can slide back and forth on the fixed plate 4010, and the offset transition yarn guide wheel 4030 is set on the offset plate 4020.

[0164] The offset transition yarn guide mechanism 400 is used to guide the yarn under the leaking plate that needs to be guided to the side of the normal short-cut yarn center line to avoid the yarn guiding process affecting the normal short-cut production.

[0165] See also Figure 1 、 Figure 2 、 Figure 14 、 Figure 15 The automatic head-loading continuous online short cutting machine also includes an automatic yarn feeding mechanism 500; the automatic yarn feeding mechanism 500 includes a yarn transport guide rail 5010, a left and right translation device, a yarn feeding lifting device, a front and back translation device, and a yarn clamping device 5020.

[0166] A left-right translation device is mounted on the yarn transport guide rail 5010, a yarn delivery lift device is mounted on the left-right translation device, a front-back translation device is mounted on the yarn delivery lift device, and a yarn clamping device 5020 is mounted on the front-back translation device. The yarn clamping device 5020 can clamp or release the yarn and, under the control of the left-right translation device, the yarn delivery lift device, and the front-back translation device, can perform front-back translation, left-right translation, and vertical lifting movements. The yarn clamping device 5020 is a pneumatic gripper (or pneumatic finger).

[0167] Assume that the bushing 600, the oiler 700, the bunching wheel 800 and the frame 10 are arranged in the left and right directions. The yarn transport guide rail 5010 is provided in front of the bushing 600, the oiler 700, the bunching wheel 800 and the frame 10 and extends in the left and right directions.

[0168] The left and right translation device is used to complete the left and right translation movement along the yarn transport guide rail 5010, which includes a left and right translation frame 5030, left and right translation wheels 5040, and a left and right translation motor 5050; the left and right translation frame 5030 can be slidably assembled on the yarn transport guide rail 5010 through the cooperation of the guide rail and the guide groove, the left and right translation wheels 5040 are arranged on the left and right translation frame 5030 and cooperate with the yarn transport guide rail 5010, and the left and right translation motor 5050 is arranged on the left and right translation frame 5030 and is transmission-connected to the left and right translation wheels 5040.

[0169] The left-right translation motor 5050 can drive the left-right translation wheels 5040 to drive the left-right translation frame 5030 to move left-right on the yarn transport guide rail 5010 .

[0170] The yarn drawing and lifting device includes a lifting motor 5060, a threaded drive component, a threaded lifting component 5070, and a lifting platform 5080. The lifting motor 5060 is mounted on the left and right translation frames 5030 and is connected to the threaded drive component. The threaded lifting component 5070 and the threaded drive component are connected by a threaded drive. The lifting platform 5080 is mounted on the threaded lifting component 5070. The lifting motor 5060 drives the threaded drive component to rotate, thereby driving the threaded lifting component 5070 and the lifting platform 5080 to move up and down. The threaded drive component and the threaded lifting component 5070 can be a threaded sleeve and a threaded shaft, respectively.

[0171] The front-to-back translation device includes a front-to-back translation frame 5090, a front-to-back translation motor 5091, a front-to-back translation gear 5092, and a front-to-back translation rack 5093; the front-to-back translation motor 5091 is arranged on the front-to-back translation frame 5090, the front-to-back translation gear 5092 is arranged on the power shaft of the front-to-back translation motor 5091, and the front-to-back translation rack 5093 is arranged on the lifting platform 5080; the yarn clamping device 5020 is arranged on the front-to-back translation frame 5090; the front-to-back translation rack 5093 extends horizontally along the front-to-back straight line direction; the front-to-back translation motor 5091 can drive the front-to-back translation frame 5090 to perform front-to-back telescopic reciprocating motion.

[0172] When a certain leaking plate needs to lead the yarn to the upper end for short cutting, the offset transition yarn guide mechanism 400 first guides the yarn under the leaking plate to the outside of the short cutting yarn center line, and then the automatic yarn leading mechanism 500 pulls the yarn to the upper yarn of the short cutting machine group.

[0173] See also Figure 1 、 Figure 16The automatic yarn-loading continuous online short-cutting machine also includes a slow-pull traction mechanism 900, which includes an active slow-pull roller 9010, a driven slow-pull roller 9020, and a slow-pull motor 9030. Driven by the slow-pull motor 9030, the active slow-pull roller 9010 and the driven slow-pull roller 9020 can roll relative to each other to clamp and pull the yarn. The slow-pull traction mechanism is used to pull the yarn when the short-cutting machine is loading the yarn.

[0174] The control method of the automatic head-up continuous online short cutting machine disclosed in the present application includes the following process steps:

[0175] STEP01 Yarn offset step: first, the operator pulls out the offset transition yarn guide wheel 4030 under the leak plate that needs to be cut, presses the start button under this leak plate, and the automatic yarn feeding mechanism 100 and slow pull traction mechanism 900 of the continuous online short cutting machine are started.

[0176] STEP02 is the automatic yarn drawing step. After the operator has handled the leakage plate, the yarn bundle is drawn down, and enters the yarn clamping device 5020 through the oiler 700 and the offset transition guide wheel 4030. The yarn clamping device 5020 of the automatic yarn drawing mechanism 500 draws the yarn to the yarn feeding and splitting swinging mechanism 90 at the inlet of the continuous online short cutting machine. The yarn clamping device 5020 continues to pass the yarn around the lower transition mechanism 2010, and then goes up to pass around the upper transition mechanism 2020 and turns to the upper yarn wheel 1010 on the right. After passing the rotating upper yarn wheel 1010, it is finally placed in the slow pull traction mechanism 900 to synchronously pull the yarn slowly.

[0177] STEP03 is the step of leading the yarn into the head. The rubber roller 230 and the knife roller 210 are pressed together and started to run. The upper yarn wheel 1010 instantly opens the upper yarn hook 1030 to hook the yarn and speed up. During the speed-up process, the yarn feed pull rod 960 pulls the yarn to the center surface of the rubber roller 230 and the knife roller 210; when the set linear speed value is reached, the arc-shaped yarn beating device 80 presses the yarn down to between the rubber roller 230 and the knife roller 210. The pressing of the yarn beating wheel 860 will increase the wrap angle between the yarn and the rubber roller 230 and the friction force will increase. At this time, the upper yarn wheel 1010 instantly decelerates to form a linear speed of the rubber roller 230 that is faster than the linear speed of the upper yarn wheel 1010, so that the yarn is brought into the two-roller yarn cutting point and enters short cutting according to the rubber roller 230.

[0178] When the second sieve plate has the yarn on it or the yarn on a sieve plate is broken or flying, the machine can directly enter the STEP01 yarn offset step without stopping the machine to cut and put on the yarn at the same time. The operator then pulls out the offset transition yarn guide wheel under the sieve plate that needs to be cut short, presses the start button under the sieve plate to start the yarn putting wheel and the slow-pull traction mechanism, and then enters the STEP02 automatic yarn feeding step and the STEP03 yarn feeding and putting on step.

[0179] 3011 and the yarn suction port 3016 on the yarn receiving disc 3011 are kept docked with the yarn suction port 3040. The two short-cutting units are synchronously and quickly switched up and down. The yarn receiving disc 3011 is cut while the working short-cutting unit rises by the yarn suction port 3016 on the yarn receiving disc 3011 and the yarn suction telescopic pipe 3040 are kept docked with the yarn suction port 3016 on the yarn receiving disc 3011. The chopped yarn in 11 is sucked away; after the two chopped yarn units are swapped up and down and in place, the standby chopped yarn unit immediately moves forward quickly to the working station and starts running and opens the yarn unloading door 3012 of the yarn receiving disk 3011. At this time, the yarn is waiting while cutting on the upper working chopped yarn unit; then the yarn beating wheel 860 of the arc-shaped yarn beating device 80 beats the yarn from the left side of the yarn between the two rubber rollers to the right side; the yarn is pressed into the yarn cutting position of the two rollers along the arc of the rubber roller according to the trajectory of the yarn beating wheel 860; at the same time, the speed of the upper chopped yarn unit drops slightly to produce a speed difference, so that the rubber roller 230 brings the yarn into the yarn cutting point through friction; finally, the interlocking cylinder 3017 drives the interlocking rod 3018 to retract, and the yarn suction tube driving component 3050 with the yarn suction telescopic pipe 3040 descends and docks with the yarn suction port 3016 of the yarn receiving disk 3011 of the current working chopped yarn unit.

[0180] As can be seen from the above introduction, the present application completes the cycle of the unit by the up and down lifting and forward and backward telescopic movement of the two short-cutting units. The uninterrupted short-cutting work during the cycle of the unit can avoid the impact on the leakage plate operation, reduce the material waste and shutdown during the cycle or flipping of the unit. At the same time, since the unit does not need to flip or rotate during the cycle, the rubber roller, knife roller and other components or assemblies of the short-cutting unit rise and fall or telescope in the original position during the cycle of the unit, and can also avoid the short-cutting unit from tilting or inverting during the flipping process, which is conducive to reducing the difficulty of the yarn leading and yarn leading change operations, simplifying the structural complexity of the short-cutting unit, improving the equipment operation efficiency and operation completion accuracy, minimizing the volume and weight, and improving the degree of automation and continuous production. At the same time, by adopting an active yarn joining and yarn suction mechanism, the present application can also carry out a full closed recovery process of the short-cut yarn produced during the cycle of the unit. On the one hand, it can avoid the short-cut yarn being repeatedly chopped by the two short-cutting units and affecting the product quality, and at the same time, it can also avoid the generation of fine yarn particles and causing environmental pollution.

[0181] The above describes the technical solution and technical effects of the present application in detail in combination with the drawings and specific embodiments of the specification. It should be noted that technicians in this field can also develop other embodiments on this basis; any simple deformation and equivalent substitution that does not deviate from the innovative concept of the present application are covered by the present application and fall within the scope of protection of this patent.

Claims

1. An automatic top-loading continuous online short cutting machine, comprising a frame (10), characterized in that: Also includes: First short-cutting unit (20); Second short-cutting unit (30); A first telescopic mechanism (40) for driving the first chopping unit (20) to perform forward and backward telescopic movement; A first lifting mechanism (50) is used to drive the first telescopic mechanism (40) to perform up and down lifting movements; A second telescopic mechanism (60) is used to drive the second chopping unit (30) to perform forward and backward telescopic movement; A second lifting mechanism (70) is used to drive the second telescopic mechanism (60) to move up and down; The first lifting mechanism (50) and the second lifting mechanism (70) are arranged on the frame (10); The first telescopic mechanism (40) and the second telescopic mechanism (60) are respectively arranged on the first lifting mechanism (50) and the second lifting mechanism (70); The first chopping unit (20) and the second chopping unit (30) are respectively arranged on a first telescopic mechanism (40) and a second telescopic mechanism (60).

2. The automatic top-loading continuous online short cutting machine according to claim 1, characterized in that: The automatic top continuous online short cutting machine also includes an arc-shaped yarn beating device (80); The arc-shaped yarn beating device (80) comprises a beating motor (810), a driving gear (820), an annular rack (830), an upper limit guide wheel (840), a lower limit guide wheel (850), and a yarn beating wheel (860); The beating motor (810) is arranged on the frame (10) and is transmission-connected to the driving gear (820); the annular rack (830) is arranged between the upper limit guide wheel (840) and the lower limit guide wheel (850) and is meshed with the driving gear (820); and the beating wheel (860) is arranged on the annular rack (830); The beating motor (810) can drive the annular rack (830) through the driving gear (820) to make an arc motion between the upper limit guide wheel (840) and the lower limit guide wheel (850), so that the beating wheel (860) can deliver the yarn to the yarn cutting point along an arc trajectory.

3. The automatic continuous online short cutting machine according to claim 1, characterized in that: The automatic top-loading continuous online short cutting machine also includes a yarn feeding and splitting swing mechanism (90); The yarn feeding and splitting swing mechanism (90) comprises a cycloid motor, a cycloid shaft (910), a cycloid seat (920), an upper swing rod (930), a lower swing rod (940), a splitting yarn guide wheel (950), a pulling cylinder, a yarn feeding and pulling rod (960), and a pulling shaft (970); The cycloid motor is arranged on the frame (10), the cycloid seat (920) is connected to the cycloid motor via the cycloid shaft (910), and the upper cycloid rod (930), the lower cycloid rod (940), and the beam guide wheel (950) are all arranged on the cycloid seat (920); The drawing cylinder is arranged on the frame (10), and the yarn feeding drawing rod (960) is connected to the drawing cylinder via the drawing shaft (970).

4. The automatic top-loading continuous online short cutting machine according to claim 1, characterized in that: The automatic yarn feeding continuous online short cutting machine also includes an automatic yarn feeding mechanism (100); The automatic yarn feeding mechanism (100) comprises an upper yarn wheel (1010), an upper yarn wheel motor (1020), an upper yarn hook (1030), and an upper yarn hook driving device (1040); The upper yarn wheel motor (1020) is arranged on the frame (10) and is transmission-connected to the upper yarn wheel (1010); the upper yarn hook (1030) is arranged on the upper yarn wheel (1010) and can be extended and retracted forward and backward along the axial direction of the upper yarn wheel (1010) under the action of the upper yarn hook driving device (1040).

5. The automatic top-loading continuous online short cutting machine according to claim 1, characterized in that: The automatic top-loading continuous online short-cutting machine also includes a yarn feeding transition mechanism (200); The yarn feeding transition mechanism (200) comprises a lower transition mechanism (2010) and an upper transition mechanism (2020); The lower transition mechanism (2010) comprises at least one lower transition wheel (2011); The upper transition mechanism (2020) comprises at least one upper transition wheel (2021).

6. The automatic top-loading continuous online short cutting machine according to claim 1, characterized in that: The automatic top-loading continuous online short cutting machine also includes an active yarn joining and yarn suction mechanism (300); The active yarn joining and suction mechanism (300) comprises a first active yarn joining mechanism (3010), a second active yarn joining mechanism (3020), a yarn suction head (3030), a yarn suction telescopic pipe (3040), and a yarn suction tube driving component (3050); The yarn suction tube driving component (3050) is arranged on the frame (10), and the yarn suction head (3030) is arranged on the yarn suction telescopic pipe (3040) and can move up and down under the action of the yarn suction tube driving component (3050); The first active yarn joining mechanism (3010) and the second active yarn joining mechanism (3020) both comprise a yarn joining disc (3011), a yarn unloading door (3012), a yarn unloading door driving component (3013), and an interlocking mechanism (3014); The yarn receiving disc (3011) is provided with a yarn inlet (3015) and a yarn suction port (3016); The interlocking mechanism (3014) comprises an interlocking cylinder (3017) and an interlocking rod (3018); The yarn unloading door (3012) is hinged on the yarn receiving disc (3011) and can be opened or closed under the action of the yarn unloading door driving component (3013), and the interlocking rod (3018) can be extended or retracted into the frame (10) under the action of the interlocking cylinder (3017).

7. The automatic top-loading continuous online short cutting machine according to claim 1, characterized in that: The first short-cutting machine unit (20) and the second short-cutting machine unit (30) both comprise a knife roller (210), a knife roller swing cylinder (220), a rubber roller (230), a rubber roller drive motor (240), a short-cutting machine unit frame (260), a knife roller connecting rod mechanism (270), and a rubber roller grinding mechanism (280); The knife roller (210), the knife roller swing cylinder (220), the rubber roller (230), and the rubber roller drive motor (240) are all arranged on the short-cut group frame (260); the rubber roller drive motor (240) is transmission-connected to the rubber roller (230); the knife roller connecting rod mechanism (270) is eccentrically connected to the knife roller (210); and the knife roller swing cylinder (220) is transmission-connected to the knife roller connecting rod mechanism (270); The rubber roller grinding mechanism (280) comprises a grinding head (2810), a grinding head motor (2820), an eccentric swing device (2830), and a grinding head swing cylinder (2840); The grinding head swing cylinder (2840) is arranged on the short-cut group frame (260) and is transmission-connected to the eccentric swing device (2830); the grinding head motor (2820) is arranged on the eccentric swing device (2830) and is transmission-connected to the grinding head (2810); Alternatively, the first short-cutting machine unit (20) and the second short-cutting machine unit (30) adopt an active knife roller and a passive rubber roller solution.

8. The automatic top-loading continuous online short cutting machine according to claim 1, characterized in that: The first lifting mechanism (50) and the second lifting mechanism (70) both include a lifting screw slide module (510), and the first telescopic mechanism (40) and the second telescopic mechanism (60) both include a telescopic screw slide module (410); The telescopic screw slide module (410) is arranged on the lifting slide of the lifting screw slide module (510), and the first short cutting machine unit (20) and the second short cutting machine unit (30) are respectively arranged on the telescopic slides of the corresponding telescopic screw slide module (410).

9. The automatic top-loading continuous online short cutting machine according to claim 1, characterized in that: The automatic top-loading continuous online short cutting machine also includes an offset transition yarn guide mechanism (400); The offset transition yarn guide mechanism (400) comprises a fixed plate (4010), a offset plate (4020), and an offset transition yarn guide wheel (4030); The deflection plate (4020) is arranged on the fixed plate (4010) and is capable of sliding on the fixed plate (4010), and the deflection transition yarn guide wheel (4030) is arranged on the deflection plate (4020).

10. The automatic top-loading continuous online short cutting machine according to claim 1, characterized in that: The automatic top continuous online short cutting machine also includes an automatic yarn guiding mechanism (500); The automatic yarn guiding mechanism (500) comprises a yarn transport guide rail (5010), a left-right translation device, a yarn guiding lifting device, a front-back translation device, and a yarn clamping device (5020); The left-right translation device is arranged on the yarn transport guide rail (5010), the yarn lead lifting device is arranged on the left-right translation device, the front-back translation device is arranged on the yarn lead lifting device, and the yarn clamping device (5020) is arranged on the front-back translation device; The yarn clamping device (5020) can clamp or loosen the yarn, and can perform forward and backward translation movement, left and right translation movement, and vertical lifting movement under the action of the left and right translation device, the yarn lifting device, and the front and back translation device.

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