Automatic feeding continuous online chopping machine and control method thereof

Abstract

The invention relates to the technical field of glass fiber chopping equipment, in particular to an automatic feeding continuous online chopping machine and a control method thereof. The automatic feeding continuous online 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 equipment, and in particular to an automatic top-up continuous online chopped machine and a control method thereof. Background Art

[0002] Brief introduction to the manufacturing process of glass fiber: After the ore raw materials are formulated, they are melted into glass liquid through a kiln, flow out through a porous platinum leak plate, and are coated with a wetting agent by a single-filament oiler. They are then drawn into ultra-fine fibers by various high-speed rotating drawing equipment such as a wire drawing machine. There are direct untwisted roving yarn balls and raw silk cakes that are wound into offline chopped yarns and online chopped yarns. Offline chopped yarns are made by winding a raw silk cake from a single-filament oiler coated with a wetting agent through a wire drawing machine, and then multiple raw silk cakes are synthesized and chopped offline, but the offline chopped yarn cycle is long, the efficiency is low, and the energy consumption is high. Online chopped yarn will simplify the process of removing the wound raw silk cakes. The filaments of multiple leak plates are directly coated with a wetting agent from the single-filament oiler and cut while drawing. This can save the wire drawing machine, silk cake transfer, offline chopped yarn site, etc. that must be equipped for each leak plate.

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

[0004] As glass fiber causes great damage to the rubber rollers and blades of the short-cutting machine, they need to be replaced regularly, and the machine must be shut down for replacement. However, offline short-cutting does not cause any problem in stopping to replace the rubber rollers and blades. However, online short-cutting is different. An online short-cutting machine usually corresponds to multiple leaking plates. When the rubber rollers and blades are replaced during maintenance, each leaking plate will continuously flow glass liquid, causing waste. It also affects the temperature rise and fluctuation of the leaking plate due to the long downtime for replacement, which deteriorates the stability of the operation, reduces efficiency, and consumes a lot of energy.

[0005] Subsequently, a double-head symmetrically arranged back-to-back combined online short-cutting machine set appeared on the market. When the rubber roller and blade need to be replaced, the equipment is stopped, and then the short-cutting machine set is rotated 180 degrees horizontally to replace the spare cutter on the back side, and then the short-cutting machine set on this side is started. However, it still requires more people to operate the upper head at the same time, and the impact of shutdown on the stability of the leak plate cannot be completely eliminated. Although the short-cutting machine set on the opposite side can safely replace the rubber roller and blade, and the short-cutting process has also been improved a lot, it still needs to be stopped, and the rotation switch is operated to restart the head, which is time-consuming and labor-intensive, and will also affect the leak plate operation.

[0006] In order 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 groups fixed on the same turntable. Since the two pairs of cutters are fixed on the turntable, the spare cutters will be reversed as the turntable rotates 180° to transpose, causing the yarn to be unable to switch to another 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 transposition, the yarn is first pushed into the switching transition ring of the working cutter, and then the single-sided 180° rotation transposition is performed, and then the yarn is switched to the transition ring of the spare cutter. While the rotation transposition is performed, the working cutter is gradually inverted. This two pairs of cutters are fixedly arranged on the same turntable. The switching process of the yarn from the working cutter to the spare cutter is relatively complicated and it is difficult for the yarn to leave the rubber roller and push it into 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 the original position. While rotating 180°, the working cutter continues to cut and rotate to keep the yarn in place. The working cutter rubber roller carries the yarn to follow the 180° rotation. The yarn is driven 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 equipment only adds two self-rotating functions of the cutting machines, which can improve the automatic reversing problem of the online double-cutting machines. However, since two independent and self-rotating small turntable short-cutting units are arranged on a large turntable, the size and weight of the equipment 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, which 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 splash everywhere during the cutting and rotation process, resulting in different lengths of the short-cut yarn grains and increased hairiness, thereby reducing 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. Summary of the invention

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

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

[0011] This application provides solutions to solve its technical problems: An automatic head-up continuous online short cutting machine, comprising: A rack, on which working stations and standby stations are arranged; The first short-cutting unit; The second short-cutting unit; A first telescopic mechanism is used to drive the first short-cutting unit to perform forward and backward telescopic movement; A first lifting mechanism, used for driving the first telescopic mechanism to perform up and down lifting movements; The second telescopic mechanism is used to drive the second short-cutting machine unit to perform forward and backward telescopic movement; The second lifting mechanism is used to drive the second telescopic mechanism to move up and down; The first lifting mechanism and the second lifting mechanism are arranged on the frame; The first telescopic mechanism and the second telescopic mechanism are respectively arranged on the first lifting mechanism and the second lifting mechanism; The first short chopping unit and the second short chopping unit are respectively arranged on the first telescopic mechanism and the second telescopic mechanism.

[0012] 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: The short-cutting unit on the standby station is retracted backwards and comes to the rear of the standby station to avoid the rising space of the short-cutting unit on the working station; The short-cutting unit at the working station rises to the standby station; The short-cutting unit on the standby station descends to the rear of the working station; The short-cutting unit on the standby station extends forward to the working station.

[0013] 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-cut 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 process.

[0014] 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.

[0015] Preferably, the first telescopic mechanism and the second telescopic mechanism are connected via a ring chain pendant to reduce the load on the drive system through suspended self-balancing.

[0016] Preferably, the ascending movement of the short-cutting machine group at the working station and the descending movement of the short-cutting machine group at the standby station are performed synchronously.

[0017] Preferably, the automatic top-up continuous online short-cutting machine also includes an arc-shaped yarn beating device; the arc-shaped yarn beating device includes a beating wheel motor, a driving gear, an annular rack, an upper limit guide wheel, a lower limit guide wheel, and a yarn beating wheel; the beating wheel 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 wheel motor is started, the annular rack can be driven by the driving gear to make an arc motion between the upper limit guide wheel and the lower limit guide wheel, so that the yarn beating wheel can accurately deliver the yarn to 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 matching 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 matched in the rack guide groove to increase the stability of the yarn beating action.

[0018] The use of an arc-shaped yarn beating device to complete automatic yarn feeding enables the yarn 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.

[0019] 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 cycloidal motor, a cycloidal shaft, a cycloidal seat, an upper swing rod, a lower swing rod, a splitting yarn guide wheel, a pulling cylinder, a yarn feeding and pulling rod, and a pulling shaft; the cycloidal motor is arranged on the frame, the cycloidal seat is connected to the cycloidal motor through the cycloidal shaft, and the upper swing rod, the lower swing rod, and the splitting yarn guide wheel are all arranged on the cycloidal seat; the pulling cylinder is arranged on the frame, and the yarn feeding and pulling rod is connected to the pulling cylinder through the pulling shaft.

[0020] The yarn feeding, beam splitting and swinging mechanism is used to complete the yarn feeding, beam splitting, swinging and pushing and pulling functions.

[0021] Preferably, the automatic head-up continuous online short-cutting machine also includes an automatic yarn-up mechanism; the automatic yarn-up 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, and the upper yarn hook is arranged on the upper yarn wheel and can be extended and retracted forward and backward 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 arranged 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 the compressed air is disconnected, so that the upper yarn hook can retract along the axial direction of the upper yarn wheel.

[0022] The automatic yarn feeding mechanism is used to cooperate with the slow-pull traction mechanism during the automatic yarn feeding process, complete the yarn capture and traction functions through the yarn feeding hook, and 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.

[0023] Preferably, the automatic top 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.

[0024] The upper transition wheel and the lower transition wheel are used to complete the transition and guiding functions of the yarn during the automatic yarn feeding process.

[0025] 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 transmission-connected to the flip motor.

[0026] The flipping lever arm and the flipping motor can drive the first lower transition wheel and the second lower transition wheel to rotate cyclically or adjust the inclination angle of the first lower transition wheel and the second lower transition wheel by rotating.

[0027] Preferably, the upper transition mechanism comprises 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.

[0028] 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 convenient loading or away from the rubber roller of the short-cutting unit, so that the efficiency and accuracy of yarn loading are more guaranteed.

[0029] Preferably, the automatic top-loading 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 both 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-suctioning 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.

[0030] The first active yarn joining mechanism and the second active yarn joining mechanism are respectively arranged on the first short-cutting machine group and the second short-cutting machine group, and are used to recover the replacement yarn generated in the process of yarn introduction when the machine group is switched. The yarn suction head, the yarn suction telescopic pipe, and the yarn suction tube driving component are common components of the first active yarn joining mechanism and the second active yarn joining mechanism. When the short-cutting machine group on the working station makes an upward movement, the yarn suction head and the yarn suction telescopic pipe rise together with the current active yarn joining mechanism under the action of the yarn suction tube driving component, and the current short-cutting machine group rises while short-cutting the circulating station, and the yarn suction head rises while sucking the replacement yarn, thereby avoiding material waste and environmental pollution. When the circulating short-cutting machine group comes to the spare station, the yarn suction head and the yarn suction telescopic pipe are reset to the working station under the action of the yarn suction tube driving component. Among them: the yarn suction head and the yarn suction telescopic pipe are interlocked with the current short-cutting machine group through the interlocking mechanism during the process of rising and sucking the yarn. After opening the interlock and descending to the working station, the yarn suction head and the yarn suction port of the yarn receiving disk are connected. Moreover, when the yarn suction head and the yarn suction telescopic pipe are in the process of rising to absorb the yarn, the yarn unloading door is in a closed state under the action of the yarn unloading door driving component so that the head-changing yarn 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 directly fall onto the conveyor line through the yarn unloading door.

[0031] Different from the prior art in which unit rotation is achieved by rotating a wheel, since the present application realizes unit circulation by up and down lifting and forward and backward telescopic movement, the short-cut unit maintains its orientation during the circulation process, and there will be no tilting, inversion or hanging of the work station. 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.

[0032] Preferably, the first short-cutting machine group and the second short-cutting machine group both include a knife roller, a knife roller swing cylinder, a rubber roller, a rubber roller drive motor, a short-cutting machine group frame, and a knife roller connecting rod mechanism; the knife roller, the knife roller swing cylinder, the rubber roller, and the rubber roller drive motor are all arranged on the short-cutting machine group frame, the rubber roller drive motor is directly connected to the rubber roller, the knife roller connecting rod mechanism is eccentrically connected to the knife roller, and the knife roller swing cylinder is transmission-connected to the knife roller connecting rod mechanism. Further preferably, the short-cutting machine group frames of the first short-cutting machine group and the second short-cutting machine group respectively adopt a symmetrical angle frame mechanism so that the machine groups can avoid each other's movement space when circulating.

[0033] 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 driving motor can drive the rubber roller to rotate to generate a short cutting force.

[0034] Preferably, the first short-cutting machine group and the second short-cutting machine group can also adopt the scheme of active knife roller and passive rubber roller. The first short-cutting machine group and the second short-cutting machine group both include knife roller, knife roller driving motor, rubber roller, rubber roller swing cylinder, short-cutting machine group frame, and rubber roller connecting rod mechanism; the knife roller, knife roller driving motor, rubber roller, and rubber roller swing cylinder are all arranged on the short-cutting machine group frame, the knife roller driving motor is directly connected to the knife roller, the rubber roller swing cylinder can drive the rubber roller to swing to approach or leave the knife roller through the rubber roller connecting rod mechanism, and the knife roller driving motor can drive the knife roller to rotate to generate short-cutting force.

[0035] Preferably, the first short-cutting machine group and the second short-cutting machine group also include a rubber roller grinding mechanism; the rubber roller grinding mechanism includes a grinding head, a grinding head motor, an eccentric swing device, and a grinding head swing cylinder; the grinding head swing cylinder is arranged on the short-cutting group frame and is transmission-connected to the eccentric swing device, and the grinding head motor is arranged on the eccentric swing device and is transmission-connected to the grinding head.

[0036] 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.

[0037] 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 slide of the corresponding lifting screw slide module, and can perform up and down lifting motion under the action of the lifting screw slide module. Further preferably, the spiral directions of the lifting screws of the first lifting mechanism and the second lifting mechanism are opposite and are linked by 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.

[0038] 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 unit and the second short cutting unit are respectively arranged on the telescopic slides of their respective telescopic screw slide modules.

[0039] Therefore, the two short cutting units can not only perform forward and backward telescopic movement under the action of their own telescopic screw slide module, but also perform up and down lifting movement together with the telescopic screw slide module under the action of the lifting screw slide module.

[0040] 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.

[0041] 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 normal short-cut yarn center line to avoid the yarn guiding process affecting the normal short-cut production.

[0042] Preferably, the automatic head-up continuous online short-cutting machine also includes an automatic yarn-leading mechanism; the automatic yarn-leading mechanism includes a yarn-carrying guide rail, a left-right translation device, a yarn-leading lifting device, a front-back translation device, and a yarn-clamping device; the left-right translation device is arranged on the yarn-carrying guide rail, the yarn-leading lifting device is arranged on the left-right translation device, the front-back translation device is arranged on the yarn-leading 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-leading lifting device, and the front-back translation device. Further preferably, the yarn-clamping device is a pneumatic clamp.

[0043] When a leaking plate needs to lead the yarn up for short cutting, the offset transition yarn guide mechanism first guides the yarn under the leaking plate to the outside of the short cutting yarn center line, and then the automatic yarn guide mechanism pulls the yarn to the upper yarn of the short cutting unit.

[0044] Preferably, the automatic head-loading continuous online short-cutting machine further comprises a slow-pull traction mechanism, which comprises 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.

[0045] The slow-pull traction mechanism is used to perform the yarn traction task when the short-cutting unit is feeding the yarn. Please refer to the Chinese patent: A slow-pull automatic feeding online cut-free yarn transition yarn feeding mechanism (publication number CN211141896U).

[0046] The control method of the automatic head-up continuous online short cutting machine disclosed in the present application includes the following process steps: STEP01 Yarn offset step, first the operator pulls out the offset transition yarn guide wheel under the leak plate that needs to be short-cut, presses the start button under this leak plate, and the automatic yarn feeding mechanism and slow pull traction mechanism of the continuous online short-cut machine are started.

[0047] STEP02 Automatic yarn introduction step: After the operator handles the leak plate, the yarn tow is introduced down, and enters the yarn clamping device through the oiler and the offset transition yarn guide wheel. The yarn clamping device of the automatic yarn introduction mechanism pulls the yarn to the yarn feeding and beam splitting swinging mechanism at the inlet of the continuous online short cut machine. The yarn clamping device continues to pass the yarn around the lower transition mechanism, and then goes up to pass the upper transition mechanism and turns to the upper yarn wheel on the right. After passing the rotating upper yarn wheel, it is finally put into the slow pulling mechanism to pull the yarn slowly synchronously; STEP03: Yarn leading 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 pull rod 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 to 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 increase the friction force. 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 to enter short cutting according to the rubber roller; When the second guillotine has the yarn on it or a certain guillotine has the yarn flying or breaking in the middle, the STEP01 yarn offset step can be directly entered 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 guillotine that needs to be cut short, presses the start button under the guillotine to start the yarn putting wheel and the slow pulling mechanism, and then enters the STEP02 automatic yarn introduction step and the STEP03 yarn introduction and putting on step; 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 after the other; the yarn unloading door of the yarn receiving disk of the working short-cutting unit at the working position is controlled to be closed 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 to rise synchronously with the yarn, and the yarn suction port on the yarn receiving disk and the yarn suction telescopic pipe remain connected; 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 pulls the chopped yarn in the yarn receiving disk The yarn is sucked away; after the two short-cutting units are swapped up and down and in place, the standby short-cutting unit immediately moves forward quickly to the working position and starts to operate and open the yarn unloading door of the yarn receiving disk. At this time, the yarn is waiting while being cut 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 decreases 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 brings the yarn suction telescopic pipe down to dock with the yarn suction port of the yarn receiving disk of the current working short-cutting unit.

[0048] Beneficial technical effects: 1. The present application completes the cycle of the unit through the lifting and telescopic movement of 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 the material waste and shutdown during the cycle of the unit. At the same time, since the unit does not need to be turned over 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 change operations, simplifying the structural complexity of the short-cutting unit, and improving the equipment operation efficiency and operation completion accuracy.

[0049] 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.

[0050] 3. The present application adopts an active yarn receiving and sucking 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 cause environmental pollution.

[0051] 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-cut rubber roller during the yarn beating process, and improve the completion efficiency of the head yarn or the head yarn replacement and the yarn feeding accuracy.

[0052] The technical solution and technical effects of the present application are described in detail below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 : Front view of the automatic head-up continuous online short cutting machine; Figure 2 : Stereoscopic image of automatic head-up continuous online short cutting machine; Figure 3 : The three-dimensional structure diagram of the first short-cutting unit from the front perspective; Figure 4 : The three-dimensional structure diagram of the first short-cutting unit from the rear perspective; Figure 5 : Schematic diagram of the telescopic screw slide module structure; Figure 6 : Schematic diagram of the lifting screw slide module structure; Figure 7 : Schematic diagram of the arc-shaped yarn beating device structure; Figure 8 : Exploded diagram of the automatic yarn feeding mechanism structure; Fig. 9 : Three-dimensional structure diagram of automatic yarn feeding mechanism; Fig.10 : Schematic diagram of the structure of the yarn feeding beam splitting swing mechanism and the yarn feeding transition mechanism; Fig.11 : Schematic diagram of the active yarn receiving and yarn suction mechanism from the front view; Fig.12 : Schematic diagram of the active yarn receiving and yarn sucking mechanism from the rear view; Fig.13 : Schematic diagram of the offset transition yarn guide mechanism structure; Fig.14 : Front view of automatic yarn feeding mechanism; Fig.15 : Side view of automatic yarn feeding mechanism; Fig.16 : Schematic diagram of slow pull traction mechanism.

[0054] Icon Description: 10-frame, 20-first short-cutting machine unit, 30-second short-cutting machine 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 beam splitting swing mechanism, 100-automatic yarn feeding mechanism, 200-yarn feeding transition mechanism, 300-active yarn receiving and sucking mechanism, 400-offset transition yarn guiding mechanism, 500-automatic yarn leading mechanism, 600-leakage plate, 700-oiler, 800-bunching wheel, 900-slow pulling mechanism; 210- knife roller, 220- knife roller swing cylinder, 230- rubber roller, 240- rubber roller drive motor, 260- short-cut group frame, 270- knife roller connecting rod mechanism, 280- rubber roller grinding mechanism; 2810-grinding head, 2820-grinding head motor, 2830-eccentric swing device, 2840-grinding head swing cylinder; 410- telescopic screw slide module; 510-lifting screw slide module; 810-wheel beating motor, 820-driving gear, 830-annular rack, 8310-rack guide groove, 840-upper limit guide wheel, 850-lower limit guide wheel, 860-yarn beating wheel, 870-yarn beating seat; 910-cycloid shaft, 920-cycloid seat, 930-upper cycloid rod, 940-lower cycloid rod, 950-beam guide wheel, 960-yarn feeding pull rod, 970-pull shaft; 1010-upper yarn wheel, 1020-upper yarn wheel motor, 1030-upper yarn hook, 1040-upper yarn hook driving device; 1011-cylinder shaft hole, 1012-upper yarn groove, 1013-upper yarn hook receiving position; 1041-cylinder shaft, 1042-cylinder head, 1043-piston shaft, 1044-upper yarn hook return spring, 1045-upper yarn disc; 2010-lower transitional agency, 2020-upper transitional agency; 2011-lower transition wheel, 2012-flip lever arm; 2021-upper transition wheel, 2022-retractable seat plate; 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; 3011- yarn receiving disc, 3012- yarn unloading door, 3013- yarn unloading door driving component, 3014- interlocking mechanism; 3015-yarn inlet, 3016-yarn suction port, 3017-interlocking cylinder, 3018-interlocking rod; 4010-fixed plate, 4020-offset plate, 4030-offset transition yarn guide wheel; 5010-yarn transport 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; 9010-active slow pull roller, 9020-driven slow pull roller, 9030-slow pull motor. DETAILED DESCRIPTION

[0055] Direction description: The front, back, left, and right directions are the front, back, left, and right directions facing the machine.

[0056] See also Figure 1 and Figure 2 The automatic head-up continuous online short-cutting machine disclosed in the present application comprises: A frame 10, on which a working station or a short-cutting station is located at a lower portion and a standby station is located at an upper portion; The first short-cutting unit 20, Figure 1 and Figure 2 The center is located at the work station; The second short-cutting unit 30, Figure 1 and Figure 2 The middle is located in the spare station; The first telescopic mechanism 40 is used to drive the first short-cutting unit 20 to perform forward and backward telescopic movement; The first lifting mechanism 50 is used to drive the first telescopic mechanism 40 to move up and down; The second telescopic mechanism 60 is used to drive the second chopping unit 30 to perform forward and backward telescopic movement; The 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 respectively arranged on the left and right sides of 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 disposed on the first telescopic mechanism 40 and the second telescopic mechanism 60 .

[0057] in: See also Figure 3 and Figure 4The first short-cutting machine unit 20 and the second short-cutting machine unit 30 both include a knife roller 210, a knife roller swing cylinder 220, a rubber roller 230, a rubber roller driving motor 240, a short-cutting machine unit frame 260, a knife roller connecting rod mechanism 270, and a rubber roller grinding mechanism 280.

[0058] The knife roller 210, the knife roller swing cylinder 220, the rubber roller 230, and the rubber roller driving motor 240 are all arranged on the short cutting group frame 260, the rubber roller driving 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 driving 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.

[0059] 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 .

[0060] The grinding head swing cylinder 2840 is arranged on the short-cut group frame 260 and is connected to the eccentric swing device 2830 by transmission, and the grinding head motor 2820 is arranged on the eccentric swing device 2830 and is connected to the grinding head 2810 by transmission; the grinding head 2810 can press 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 grinding force under the action of the grinding head motor 2820. The grinding head 2810 preferably uses a diamond grinding wheel.

[0061] The short-cutting group frames of the first short-cutting group 20 and the second short-cutting group 30 respectively adopt a left-right symmetrical angle frame mechanism so that they can avoid each other's movement space when the groups circulate.

[0062] In a modified embodiment of the application, the first short-cutting machine group 20 and the second short-cutting machine group 30 can also adopt the scheme of active knife roller and passive rubber roller. The first short-cutting machine group 20 and the second short-cutting machine group 40 both include a knife roller, a knife roller driving motor, a rubber roller, a rubber roller swing cylinder, a short-cutting machine group frame, a rubber roller connecting rod mechanism, and a rubber roller grinding mechanism; the knife roller, the knife roller driving motor, the rubber roller, and the rubber roller swing cylinder are all arranged on the short-cutting machine group frame, the knife roller driving motor is directly connected to the knife roller, the rubber roller swing cylinder can drive the rubber roller to swing through the rubber roller connecting rod mechanism to approach or leave the knife roller, and the knife roller driving motor can drive the knife roller to rotate to generate short-cutting force.

[0063] 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 .

[0064] The screw slide module generally includes a screw, a slide (or nut seat), and a screw motor. The screw motor drives the screw to rotate and then drives the slide to slide back and forth on the screw. The lifting screw slide module 510 means a screw slide module that is vertically arranged to drive other components or parts to perform lifting and lowering movements, and the telescopic screw slide module 410 means a screw slide module that is horizontally arranged front and back to drive other components or parts to perform telescopic movements front and back. The structure and usage of the screw slide module are not described in detail.

[0065] 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.

[0066] 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 short chopping unit 20 and the second short chopping unit 30 can move forward and backward under the action of the corresponding telescopic screw slide module 410. Therefore, the two short 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.

[0067] Unit cycle action: The short-cutting unit on the standby station is retracted backwards and comes to the rear of the standby station to avoid the rising space of the short-cutting unit on the working station; The short-cutting unit at the working station rises to the standby station; The short-cutting unit on the standby station descends to the rear of the working station; The short-cutting unit on the standby station extends forward to the working station.

[0068] Compared with the unit rotation scheme completed by wheel rotation in the prior art, the present application adopts the lifting and telescopic movement of the unit to complete the cycle of the unit, which can simplify the process difficulty of automatic yarn introduction (the head does not need to be tilted, rotated and inverted), reduce the structural complexity of the short-cutting unit (the upper yarn and the head yarn replacement actuator of the rubber roller and the knife roller are simplified), improve the action efficiency and completion accuracy of yarn introduction and unit switching, and make continuous and uninterrupted short cutting and recycling of the short-cut yarn particles formed during the unit cycle possible.

[0069] In a modified embodiment of the present application, the spiral directions of the lifting screws of the first lifting mechanism 50 and the second lifting mechanism 70 are opposite (for example, one is left-handed and the other is right-handed) and are connected by a synchronous belt. The first lifting mechanism 50 and the second lifting mechanism 70 are driven by a lifting motor. When the lifting motor is started, the lifting and lowering of the two short-cutting units can be synchronized, that is, one unit is moving up while the other unit is moving down. The lifting mechanism linkage scheme can improve the unit cycle efficiency and reduce equipment costs.

[0070] 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.

[0071] 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 driving system through suspended self-balancing.

[0072] Please refer to Figure 1 and Figure 7 The automatic head-up 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 yarn beating wheel 860, and a yarn beating seat 870.

[0073] The beating motor 810 is arranged on the frame 10 and located inside the frame 10, and the beating motor 810 is transmission-connected to the driving gear 820. The beating seat 870 is arranged on the frame 10 and located outside the frame 10, and the upper limit guide wheel 840 and the lower limit guide wheel 850 are arranged inside the beating seat 870 and arranged up and down. The annular rack 830 is arranged between the upper limit guide wheel 840 and the lower limit guide wheel 850 and meshes with the driving gear 820, and the beating wheel 860 is hinged on the annular rack 830.

[0074] 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 yarn beating wheel 860 can deliver the yarn to the yarn cutting point between the knife roller 210 and the rubber roller 230 according to the arc trajectory of the rubber roller 230.

[0075] The use of an arc-shaped yarn beating device to complete automatic yarn feeding enables the yarn beating wheel to accurately press the yarn into the yarn cutting point between the rubber roller and the knife roller of the short-cutting unit according to the arc-shaped trajectory of the 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 the first yarn or the first yarn change and the yarn feeding accuracy.

[0076] 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 stability of the yarn beating action.

[0077] See also Figure 1 and Fig.10 The automatic head-loading continuous online short-cutting machine also includes a yarn feeding and splitting swing mechanism 90, which is used to complete the yarn feeding, splitting, cycloid and push-pull functions of the yarn. The yarn feeding and splitting swing 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 pull rod 960, and a pull shaft 970.

[0078] 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.

[0079] The pulling cylinder is arranged in the frame 10, and the yarn feeding pulling rod 960 is connected to the pulling cylinder through the pulling shaft 970. The pulling cylinder can drive the yarn feeding pulling rod 960 to do forward and backward telescopic movement to push the yarn.

[0080] See also Figure 1 , Figure 8 , Fig. 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.

[0081] The upper yarn wheel motor 1020 is arranged 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 arranged on the upper yarn wheel 1010 and can be extended and retracted forward and backward along the axis of the upper yarn wheel 1010 under the action of the upper yarn hook driving device 1040.

[0082] The upper yarn hook driving device 1040 includes a cylinder shaft 1041, a cylinder cover 1042, a piston shaft 1043, and an upper yarn hook reset spring 1044; a cylinder cavity is arranged on the cylinder shaft 1041; the cylinder cover 1042, the piston shaft 1043, and the cylinder cavity constitute a cylinder structure; the upper yarn hook reset spring 1044 is arranged between the piston of the piston shaft 1043 and the cylinder cover 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 shrink along the axial direction of the upper yarn wheel 1010.

[0083] The connection relationship of the components is as follows: a cylinder shaft hole 1011 is provided in the middle of the upper yarn wheel 1010, and the 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 establish a transmission connection through a transmission shaft or a transmission belt.

[0084] The upper yarn hook 1030 is fixedly connected to the end of the piston shaft 1043 through 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.

[0085] The automatic yarn feeding mechanism 100 is used to cooperate with the slow-pull traction mechanism 900 during the automatic yarn feeding process, complete 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 delivers the yarn to the yarn cutting point located between the rubber roller and the knife roller of the short-cutting unit.

[0086] See also Figure 1 and Fig.10 The automatic top 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.

[0087] 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.

[0088] In a modified 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 lower transition wheel and the second lower transition wheel are fixed on the flip lever arm 2012, and the flip lever arm 2012 is connected to the flip motor. The flip lever arm 2012 and the flip motor can drive the first lower transition wheel and the second lower transition wheel to rotate in a cycle or adjust the inclination angle of the first lower transition wheel and the second lower transition wheel by rotating (that is, adjusting the transition and guiding direction of the yarn).

[0089] In a modified embodiment, the upper transition mechanism 2020 further includes a telescopic cylinder and a telescopic seat plate 2022; the telescopic seat plate 2022 is arranged on the piston rod of the telescopic cylinder, and the upper transition wheel 2021 is arranged on the telescopic seat plate 2022. The telescopic cylinder and the telescopic seat plate 2022 can drive the upper transition wheel 2021 to approach the rubber roller of the short-cutting unit for easy introduction or to move away from the rubber roller of the short-cutting unit, so that the completion efficiency and accuracy of the yarn introduction are more guaranteed.

[0090] See also Figure 1 , Fig.11 , Fig.12 The automatic head-loading continuous online short-cutting machine also includes an active yarn-joining and yarn-sucking mechanism 300; the active yarn-joining and yarn-sucking mechanism 300 includes a first active yarn-joining mechanism 3010, a second active yarn-joining mechanism 3020, a yarn-sucking head 3030, a yarn-sucking telescopic pipe 3040, and a yarn-sucking tube driving component 3050. The yarn-sucking tube driving component 3050 is arranged on the frame 10, and the yarn-sucking head 3030 is arranged on the yarn-sucking telescopic pipe 3040 and can move up and down under the action of the yarn-sucking tube driving component 3050. The yarn-sucking tube driving component 3050 can be a slide cylinder, an oil cylinder, or a motor screw slide module, etc.

[0091] The first active yarn receiving mechanism 3010 and the second active yarn receiving mechanism 3020 both include a yarn receiving 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 includes an interlocking cylinder 3017 and an interlocking rod 3018; the yarn unloading door driving component 3013 is provided on the yarn receiving disc 3011 and the piston rod is hinged to the yarn unloading door 3012, the yarn unloading door 3012 is hinged to the yarn receiving disc 3011 and can be opened or closed under the action of the yarn unloading door driving component 3013; the interlocking rod 3018 can extend or retract to the frame 10 under the action of the interlocking cylinder 3017. The yarn unloading door driving component 3013 can be a telescopic cylinder.

[0092] The first active yarn joining mechanism 3010 and the second active yarn joining mechanism 3020 are respectively arranged on the first short-cutting machine group 20 and the second short-cutting machine group 30, and are used to recover the replacement yarn generated when the machine groups are switched or circulated. The yarn suction head 3030, the yarn suction telescopic pipe 3040, and the yarn suction tube driving component 3050 are common components of the first active yarn joining mechanism 3010 and the second active yarn joining mechanism 3020. When the short-cutting machine group on the working station makes an upward movement, the yarn suction head 3030 and the yarn suction telescopic pipe 3040 rise together with the current active yarn joining and suction mechanism under the action of the yarn suction tube driving component 3050, and the current short-cutting machine group rises while performing short-cutting while circulating the workstation, and the yarn suction head 3030 rises and absorbs the replacement yarn accordingly, thereby avoiding material waste and environmental pollution. Different from the prior art in which unit rotation is achieved by rotating a wheel, since the present application realizes unit circulation by up and down lifting and forward and backward telescopic movement, the short-cut unit maintains its position during the circulation process, so that 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.

[0093] When the circulating short-cutting machine unit arrives at the standby station, the yarn suction head 3030 and the yarn suction telescopic pipe 3040 are reset to the working station under the action of the yarn suction tube driving component 3050. When the machine unit is circulating: the yarn suction head 3030 and the yarn suction telescopic pipe 3040 are interlocked with the current short-cutting machine unit through the interlocking mechanism 3014 during the process of rising to suck the yarn. After opening the interlock and descending to the working station, the yarn suction head 3030 is connected with the yarn suction port 3016 of the yarn receiving disk. Furthermore, while the yarn suction head 3030 and the yarn suction telescopic duct 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 produced during the unit circulation process can be sucked into the yarn suction telescopic duct 3040; after the yarn suction head 3030 and the yarn suction telescopic duct 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 directly fall onto the conveyor line through the yarn unloading door 3012.

[0094] See also Figure 1 , Figure 2 , Fig.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 be telescopically slid back and forth on the fixed plate 4010, and the offset transition yarn guide wheel 4030 is set on the offset plate 4020.

[0095] 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.

[0096] See also Figure 1 , Figure 2 , Fig.14 , Fig.15 The automatic head-up 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.

[0097] The left-right translation device is arranged on the yarn transport guide rail 5010, the yarn drawing lifting device is arranged on the left-right translation device, the front-back translation device is arranged on the yarn drawing 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 front-back translation movement, left-right translation movement, and vertical lifting movement under the action of the left-right translation device, the yarn drawing lifting device, and the front-back translation device. The yarn clamping device 5020 is a pneumatic clamping claw (or pneumatic finger).

[0098] Assume that the drain plate 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 arranged in front of the drain plate 600, the oiler 700, the bunching wheel 800 and the frame 10 and extends in the left and right directions.

[0099] 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.

[0100] 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 .

[0101] The yarn lifting device includes a lifting motor 5060, a threaded driving component, a threaded lifting component 5070, and a lifting platform 5080; the lifting motor 5060 is arranged on the left and right translation frame 5030 and is transmission-connected to the threaded driving component, the threaded lifting component 5070 and the threaded driving component are threadedly connected, and the lifting platform 5080 is arranged on the threaded lifting component 5070. The lifting motor 5060 can drive the threaded driving component to rotate, and then drive the threaded lifting component 5070 and the lifting platform 5080 to move up and down. The threaded driving component and the threaded lifting component 5070 can be a threaded sleeve and a threaded shaft respectively.

[0102] 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.

[0103] When a leaking plate needs to lead the yarn up for short cutting, the offset transition yarn guide mechanism 400 first guides the yarn under the leaking plate to outside the short cutting yarn center line, and then the automatic yarn leading mechanism 500 pulls the yarn to the yarn leading end of the short cutting machine group.

[0104] See also Figure 1 , Fig.16 The 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. The active slow-pull roller 9010 and the driven slow-pull roller 9020 can roll relative to each other under the action of the slow-pull motor 9030 to clamp and pull the yarn. The slow-pull traction mechanism is used to perform the yarn pulling task when the short-cutting machine group loads the yarn.

[0105] The control method of the automatic head-up continuous online short cutting machine disclosed in the present application includes the following process steps: 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 the slow pull traction mechanism 900 of the continuous online short cutting machine are started.

[0106] STEP02 is the automatic yarn guiding step. After the operator handles the leakage plate, the yarn bundle is guided down, and enters the yarn clamping device 5020 through the oiler 700 and the offset transition yarn guide wheel 4030. The yarn clamping device 5020 of the automatic yarn guiding mechanism 500 pulls 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 bypass the upper transition mechanism 2020 and turn to the upper yarn wheel 1010 on the right. After bypassing the rotating upper yarn wheel 1010, it is finally placed in the slow-pull traction mechanism 900 to synchronously pull the yarn slowly.

[0107] STEP03 is the step of guiding the yarn to the top. 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 plane 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 increase the friction force. 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 to enter short cutting according to the rubber roller 230.

[0108] When the second leak plate has the upper yarn or a leak plate has the yarn flying or breaking in the middle, you can directly enter the STEP01 yarn offset step without stopping the machine to cut and put the yarn on at the same time. The operator then pulls out the offset transition yarn guide wheel under the leak plate that needs to be cut short, presses the start button under the leak plate to start the yarn putting wheel and the slow pull traction mechanism, and then enters the STEP02 automatic yarn feeding step and STEP03 yarn feeding and putting on step.

[0109] STEP04 unit cycle step, first, the first telescopic mechanism 40 or the second telescopic mechanism 60 moves the short-cutting unit at the standby position to the rear end of the frame 10, at this time, the two short-cutting units are arranged one in front and the other in the back; the yarn unloading door 3012 of the yarn receiving disc 3011 of the working short-cutting unit at the working position is controlled to be closed by the yarn unloading door driving component 3013, and at the same time, the interlocking cylinder 3017 drives the interlocking rod 3018 to extend out of the frame 10 to interlock the yarn suction telescopic pipe 3040 and the yarn receiving disc 3011 to follow the working short-cutting unit to rise synchronously with the yarn, and the yarn suction port 3016 on the yarn receiving disc 3011 and the yarn suction telescopic pipe 3040 remain connected; the two short-cutting units synchronously and quickly change positions up and down, and the yarn receiving disc 3011 is lifted by the yarn suction telescopic pipe 3040 while the working short-cutting unit cuts and rises 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 position and starts to operate 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 decreases slightly to produce a speed difference, so that the rubber roller 230 brings the yarn to 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 to connect with the yarn suction port 3016 of the yarn receiving disk 3011 of the current working chopped yarn unit.

[0110] As can be seen from the above introduction, the present application completes the cycle of the unit through 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 leaking plate operation, and 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 components of the short-cutting unit are lifted or retracted in situ during the cycle of the unit, which can also avoid the short-cutting unit from tilting or inverting during the flipping process, which is conducive to reducing the difficulty of the operation of yarn leading and yarn leading, 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 receiving and yarn suction mechanism, the present application can also perform a closed recovery process on 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 to affect the product quality, and at the same time, it can also avoid the generation of fine yarn particles and cause environmental pollution.

[0111] The technical scheme and technical effects of the present application are described in detail above 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 belong to 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: The first short-cutting unit (20); The 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) used to drive the first telescopic mechanism (40) to perform up and down lifting movements; A second telescopic mechanism (60) for driving 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 perform up and down lifting movements; 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 short chopping unit (20) and the second short chopping unit (30) are respectively arranged on a first telescopic mechanism (40) and a second telescopic mechanism (60).

2. The automatic top-up continuous online short cutting machine according to claim 1 is characterized by: 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 wheel 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 wheel 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 yarn beating wheel (860) is arranged on the annular rack (830); The beating wheel motor (810) 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) via the driving gear (820), so that the beating wheel (860) can deliver the yarn to the yarn cutting point along an arc trajectory.

3. The automatic top-up continuous online short cutting machine according to claim 1 is characterized by: The automatic head-up continuous online short-cutting machine also includes a yarn feeding and splitting swinging 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 splitting guide wheel (950) are all arranged on the cycloid seat (920); The pulling cylinder is arranged on the frame (10), and the yarn feeding pulling rod (960) is connected to the pulling cylinder via the pulling shaft (970).

4. The automatic top-up 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-up continuous online short cutting machine according to claim 1 is characterized by: 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-up 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 sucking mechanism (300); The active yarn joining and yarn sucking mechanism (300) comprises a first active yarn joining mechanism (3010), a second active yarn joining mechanism (3020), a yarn sucking head (3030), a yarn sucking telescopic pipe (3040), and a yarn sucking 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 receiving mechanism (3010) and the second active yarn receiving mechanism (3020) both comprise a yarn receiving 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 disk (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-up continuous online short cutting machine according to claim 1 is characterized by: The first short-cutting machine group (20) and the second short-cutting machine group (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 group 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); The first lifting mechanism (50) and the second lifting mechanism (70) both comprise a lifting screw slide module (510), and the first telescopic mechanism (40) and the second telescopic mechanism (60) both comprise 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).

8. The automatic top-up continuous online short cutting machine according to claim 1 is characterized by: The automatic top-up 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).

9. The automatic top-up 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 translational movement, left and right translational movement, and vertical lifting movement under the action of the left and right translational device, the yarn guiding lifting device, and the front and back translational device.

10. The control method of the automatic head-up continuous online short cutting machine is characterized by: The automatic top-up continuous online short-cutting machine applied to claim 1 comprises: In the yarn introduction step, the rubber roller (230) and the knife roller (210) are brought close together, pressed tightly and started to run, the upper yarn wheel (1010) opens the upper yarn hook (1030) to hook the yarn and speed up, and 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), and the pressing of the yarn beating wheel (860) increases the wrap angle between the yarn and the rubber roller (230) and the friction force increases. At this time, the upper yarn wheel (1010) is instantly decelerated to form a linear speed of the rubber roller (230) faster than the linear speed of the upper yarn wheel (1010), so that the yarn is brought into the two-roller yarn cutting point to enter short cutting according to the rubber roller (230); The unit cycle steps include: firstly, the first telescopic mechanism (40) or the second telescopic mechanism (60) moves the short-cutting unit at the standby position to the rear side of the frame (10), and at this time, the two short-cutting units are arranged one in front of the other; the yarn unloading door (3012) of the yarn receiving disk (3011) of the working short-cutting unit at the working position is controlled to close by the yarn unloading door driving component (3013), and at the same time, the interlocking cylinder (3017) drives the interlocking rod (3018) to extend. The frame (10) interlocks the yarn suction telescopic pipe (3040) and the yarn receiving disk (3011) to rise synchronously with the working short-cutting machine group and the yarn, and the yarn suction port (3016) on the yarn receiving disk (3011) and the yarn suction telescopic pipe (3040) are kept in contact with each other; the two short-cutting machine groups are synchronously and quickly replaced up and down, and the working short-cutting machine group cuts and rises while the short-cutting yarn in the yarn receiving disk (3011) is sucked away by the yarn suction telescopic pipe (3040); the two short-cutting machine groups After the upper and lower parts are exchanged in place, the standby short-cutting machine unit is quickly moved forward to the working position and starts to operate and opens the yarn unloading door (3012) of the yarn receiving disk (3011). At this time, the yarn is cut and waited on the upper working short-cutting machine 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, and the yarn beating wheel (860) is pressed into the yarn cutting point of the two rollers along the arc of the rubber roller to enter the short-cutting; the yarn is moved along the track of the yarn beating wheel (860) The yarn is pressed into the yarn cutting point along the rubber roller (230) in an arc shape; at the same time, the rotation speed of the upper short-cutting unit decreases to generate 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 contract, and the yarn suction tube driving component (3050) with the yarn suction telescopic pipe (3040) descends to connect with the yarn suction port (3016) of the yarn receiving disk (3011) of the currently working short-cutting unit.

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