Gravity array recovery device and method for empty pipes

Abstract

The invention belongs to the technical field of chemical fiber spinning equipment, and relates to a gravity array recovery device and method for blank pipes, a three-stage progressive core structure is adopted: a first-stage U-shaped guide groove correction mechanism realizes dynamic flexible posture correction by utilizing the kinetic energy of the blank pipes through an adjustable inclination angle and an elastic constraint boundary; the second stage is an L-shaped transfer slide way of a core innovative structure and is linked with the previous stage through a flexible traction piece to realize dynamic connection, in a receiving state, impact kinetic energy is dissipated through a U-shaped buffer receiving end, and in a release state, the movement state of an empty pipe is stably converted into transverse rolling from axial sliding through the change of an inclination angle after linkage; and the third stage is an empty pipe arranging mechanism and a propelling device, the empty pipes are arranged in a self-array mode through a preset inclination angle and damping limiting, and orderly stacking is completed through synchronous pushing. According to the device, gravity serves as a main power source, automatic recovery of efficient, low-loss and tidy stacking of empty pipes is achieved through key motion state conversion and a buffering mechanism, and energy consumption and operation cost are reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to a gravity alignment recovery device and method for empty tubes, in particular to a method and device suitable for POY (pre-oriented yarn) and other chemical fiber production processes, which can automatically recover, correct posture, align and batch, and neatly stack empty tubes, belonging to the technical field of chemical fiber spinning equipment. BACKGROUND

[0002] In the production process of polyester, nylon and other synthetic fibers, POY, as a key intermediate product, needs to be wound on paper or plastic empty tubes for transportation and subsequent processing. The recovery and arrangement of empty tubes directly affects the continuous operation efficiency, resource utilization rate and production cost of the production line, and is the core auxiliary link in the chemical fiber and textile industry. The current empty tube recovery scheme in the industry has the following outstanding and urgent technical problems: 1. The efficiency of manual recovery scheme does not match the production capacity - traditional empty tube recovery relies on manual sorting, arrangement and stacking, which not only has high labor intensity and high labor cost proportion (about 60%-70% of the total cost of this link), but also has very low processing efficiency. Manual processing can only handle 300-500 empty tubes per hour, while a single high-speed production line can produce 800-1200 empty tubes per hour. The manual processing speed is much lower than the equipment output speed, which becomes a key bottleneck restricting the production capacity improvement of the production line.

[0003] 2. The existing automatic equipment has a high empty tube damage rate - to replace manual labor, rigid chute type and forced pushing type automatic recovery equipment has appeared in the industry. Due to the lack of flexible buffer structure, the empty tubes collide violently with the inner wall of the equipment and other empty tubes during high-speed falling and transmission, resulting in a high probability of pipe mouth fragmentation and pipe body scratching, up to 15%-20%. Damaged empty tubes cannot be recycled, not only increasing waste loss cost, but also requiring additional investment in new empty tube procurement, increasing the overall production cost.

[0004] 3. The alignment effect of automatic recovery is poor, and secondary arrangement is needed - the existing automatic equipment lacks effective posture control and self-alignment mechanism. During the empty tube recovery process, problems such as posture disorder, turning, winding, etc. are prone to occur, and the empty tubes at the final collection end are stacked in disorder. Enterprises need to additionally configure manual secondary sorting and arrangement to meet the use requirements of subsequent processes, and fail to form a complete automatic chain of "recovery-stacking-reuse", and the automation advantage is offset.

[0005] Four, high-end solutions are cost-effective, difficult to scale up - the use of multi-degree of freedom manipulator, vision-guided robot and other high-end solutions can improve the arrangement effect, but the mechanical structure is complex, the control system is precise, resulting in high equipment cost and high maintenance cost (annual maintenance cost is about 10%-15% of equipment cost), and the technical requirements of the operators are very high. Such solutions do not match the cost-sensitive production characteristics of the chemical fiber industry and cannot be widely applied in small and medium-sized enterprises and large-scale production lines.

[0006] In summary, the existing air pipe recovery scheme cannot meet the core needs of "high efficiency, low loss, neat arrangement, and low cost", and the industry urgently needs a new type of air pipe recovery technology and device with simple structure, reliable operation, and strong adaptability to fill the market gap. SUMMARY

[0007] In order to overcome the shortcomings of low efficiency of manual recovery, high damage rate of automatic equipment, poor arrangement effect, and high cost of high-end solutions in the prior art, the present application provides a gravity arrangement and recovery device and method for air pipe, which realizes high efficiency, low loss, automation and neatness of air pipe recovery, and reduces equipment cost and operation cost, which meets the production needs of the chemical fiber industry.

[0008] A gravity arrangement and recovery device for air pipe, comprising a rack, and a U-shaped guide groove correction mechanism, an L-shaped transfer chute, an air pipe arrangement mechanism, a propulsion device, a control system and a flexible traction member connected in sequence along the air pipe conveying direction; The U-shaped guide groove correction mechanism is inclinedly installed on the rack and is used for receiving the air pipe and correcting the posture. It is inclinedly installed on the rack, and its main function is to receive the falling air pipe from the upstream equipment (such as a rubberizer), and to pre-correct the falling posture. The design feature of this mechanism is that the horizontal inclination angle is fixed (for example, 20°), and the axial (length) inclination angle is adjustable. Specifically, the guide groove rotating shaft at the bottom of the mechanism is hinged with the rack, and an independent driving mechanism (such as a pneumatic piston) is used to drive it to rotate around the shaft, so that the axial inclination angle is switched between a smaller angle (such as 40°) for receiving the air pipe and a larger angle (such as 80°) for releasing the air pipe. After the air pipe enters the mechanism, it is guided to the lower side under the action of the fixed horizontal inclination angle and gravity, and then the kinetic energy of the air pipe causes the controllable deformation of the elastic restraint layer on the inner wall of the groove body, forming a dynamic and multi-point contact correction channel, effectively absorbing impact energy and correcting the deflection and skew of the air pipe. In order to further optimize the guiding and correcting effect, a first-stage correction guide piece is arranged above one side of the groove body, and a second-stage correction guide piece is arranged below the other side, and the two work together to constrain and guide the movement trajectory of the air pipe.

[0009] The L-shaped transfer chute is arranged downstream of the U-shaped guide groove correction mechanism, and is used for buffering the empty tube and converting the motion state thereof; the L-shaped transfer chute is installed on the rack through a rack extension device, and is provided with an L-shaped transfer chute rotating shaft connected with the rack extension device, so that the fixed inclination angle thereof is adjustable. The main function of the L-shaped transfer chute is to receive the empty tube released from the U-shaped guide groove correction mechanism, to buffer the falling kinetic energy of the empty tube through the L-shaped structure, and to stably convert the motion state of the empty tube from the axial sliding along the inclined surface into the state of rolling to the next mechanism, so as to realize the secondary conversion of the gravitational potential energy. In order to ensure the smooth transition of the empty tube during the switching of the mechanism, the device is provided with a flexible traction member, which is connected with the inlet end of the L-shaped transfer chute and the U-shaped guide groove correction mechanism. When the U-shaped guide groove correction mechanism is in the receiving state, the flexible traction member synchronously adjusts the angle of the buffering receiving end of the L-shaped transfer chute, so that the transverse inclination angle thereof is greater than 0°. At this time, the chute is also in the receiving state, and the kinetic energy of the empty tube is effectively absorbed and limited. When the U-shaped guide groove correction mechanism is switched to the releasing state, the flexible traction member is released correspondingly, and drives the buffering receiving end to adjust to the transverse inclination angle of 0° or less. At this time, the chute enters the releasing state, and the potential energy of the empty tube is converted into kinetic energy again under the action of gravity. Through the accurate inclination angle connection design, the empty tube reaches the appropriate speed, avoids the steps or collisions between mechanisms, and ensures the smooth and continuous conveying process.

[0010] Preferably, the flexible traction member is a steel wire rope or a similar flexible traction member, one end of which is connected to the secondary correction guide piece, and the other end of which is connected to the buffering receiving end of the L-shaped transfer chute. The flexible traction member connects the U-shaped guide groove correction mechanism and the L-shaped transfer chute. When the inclination angle of the U-shaped guide groove correction mechanism changes, the flexible traction member drives the receiving end of the L-shaped transfer chute to synchronously adjust the angle, so as to maintain the smooth connection between the two.

[0011] The empty tube arrangement mechanism is connected to the outlet end of the L-shaped transfer chute, and is used for self-alignment and batch collection of the empty tube. The function of the empty tube arrangement mechanism is to automatically arrange the empty tube rolled in after buffering. In order to realize this function, the overall plate surface of the empty tube arrangement mechanism maintains a small preset inclination angle (usually 1° to 2°) relative to the horizontal plane. Under this inclination angle, a component force of the gravity acting on the empty tube will continuously make it roll to the lower side (defined as the arrangement reference surface), so as to realize automatic close arrangement. In structure, a limiting and buffering slope is arranged at the inlet side of the empty tube arrangement mechanism, which is used for smoothly guiding the empty tube to enter and preliminarily limiting; a damping limiting member is arranged at the other side (for example, the right side) of the empty tube arrangement mechanism, which is usually a plastic baffle, and is used for further slowing down the speed of the empty tube and preventing it from rebounding and deviating, so as to ensure that each empty tube can accurately adhere to the arrangement reference surface.

[0012] The pushing device is arranged on one side of the empty tube arrangement mechanism and is used for batch pushing of empty tubes as a stacking execution unit. The function of the pushing device is to push the empty tubes in a batch to a storage unit (such as a material frame) when the empty tubes gathered in the empty tube arrangement mechanism and arranged in an orderly manner reach a preset number (i.e., a batch of collection is completed). The pushing device comprises a pushing cylinder and a synchronous pushing rod fixedly connected with a piston rod. The length of the synchronous pushing rod is specially designed so that the synchronous pushing rod can completely cover the entire length of the effective arrangement area of the empty tube arrangement mechanism. When the cylinder is actuated, the synchronous pushing rod simultaneously acts on the end of all the empty tubes arranged in a row, so that the empty tubes are smoothly and synchronously pushed out, thereby maintaining the orderly arrangement in the process of transfer and realizing orderly stacking. The pushing device comprises a pushing cylinder and a synchronous pushing rod, and the length of the synchronous pushing rod is consistent with the effective arrangement length of the empty tube arrangement mechanism.

[0013] The control system is used for realizing full-process automatic control. The control system takes a PLC controller as a core and is matched with an infrared sensor and an actuator. The infrared sensor is installed at the end of batch collection of the empty tube arrangement mechanism and is used for detecting the arrangement number of empty tubes. The PLC controller is used for receiving the infrared sensor signal and controlling the action of the pushing device and the lifting of the storage unit.

[0014] The bottom of the U-shaped guide groove correction mechanism is hinged to a rack through a guide groove rotating shaft, and is driven to rotate around the shaft through a driving mechanism. The axial inclination adjustment range is 30°-90°. The horizontal direction of the U-shaped guide groove correction mechanism is provided with a fixed inclination of 10°-20°. The inner wall of the groove body is provided with an elastic restraint boundary. The material of the elastic restraint boundary is polyurethane elastomer, silica gel layer or rubber layer. The thickness of the elastic restraint boundary is 3-8 mm. The elastic restraint boundary can be elastically deformed by using the kinetic energy of the empty tube.

[0015] The L-shaped transfer slide is installed on the rack through a rack extension device, and is connected to the rack extension device through an L-shaped transfer slide rotating shaft. The L-shaped transfer slide is axially provided with a fixed inclination of 1°-5°, and the transverse inclination adjustment range is -15° to 15°. The buffer receiving end of the L-shaped transfer slide is in a U-shaped structure.

[0016] The empty tube arrangement mechanism is provided with a transverse inclination of 1°-3° relative to the horizontal plane. The inlet side is provided with a limiting buffer slope with a slope of 30°-60°. One side of the arrangement channel of the empty tube arrangement mechanism is provided with a damping limiting piece. The channel width adjustment range is 30-100 mm.

[0017] A use method of a gravity arrangement and recovery device of empty tubes, comprising the following steps: Step one: acceleration and flexible attitude correction: the U-shaped guide groove correction mechanism is adjusted to a receiving axial inclination of 30-50°. The empty tubes are accelerated to slide under the action of gravity, and the speed is reduced and the attitude deviation is corrected through the cooperation of the guide pieces. Specifically, the U-shaped guide groove correction mechanism is adjusted to a receiving axial inclination of 30°-50° to receive the empty tubes falling from the upstream equipment.

[0018] The empty tubes slide along the guide groove under the action of gravity at a horizontal fixed inclination (10°-20°), and the kinetic energy impacts the elastic constraint boundary of the inner wall of the guide groove, causing controllable elastic deformation and forming a flexible correction channel with multiple-point contact.

[0019] Under the cooperative constraint of the primary and secondary correction guide vanes, the attitude deviation and axial deflection of the empty tubes are corrected, achieving low-damage attitude correction.

[0020] Step two: buffering and motion state conversion: the U-shaped guide groove correction mechanism is switched to a release axial inclination of 60°-90°, and the L-shaped transfer chute is adjusted in synchronization by the flexible traction member. After buffering through the L-shaped transfer chute, the motion state of the empty tubes is converted from axial sliding to transverse rolling. Specifically, after the attitude correction is completed, the axial inclination of the U-shaped guide groove correction mechanism is switched to a release state of 60°-90°, and the buffering receiving end of the L-shaped transfer chute is adjusted in synchronization by the flexible traction member to ensure smooth connection.

[0021] The empty tubes enter the L-shaped transfer chute, and under the action of the U-shaped buffering receiving end and the chute structure, the falling kinetic energy is buffered and absorbed. Meanwhile, under the cooperative action of the axial and transverse inclinations of the chute, the motion state is smoothly converted from axial sliding to transverse rolling, and the gravitational potential energy is converted into kinetic energy again under the traction of gravity.

[0022] Step three: arranging and synchronously stacking: the empty tubes enter the empty tube arrangement mechanism, are arranged neatly under the action of the transverse inclination and the damping limiting member, and after reaching the preset number, the PLC controller triggers the propulsion device to synchronously push the entire batch of empty tubes into the storage unit.

[0023] Specifically, the empty tubes in rolling state enter the empty tube arrangement mechanism smoothly through the limiting and buffering slope, and under the action of the transverse inclination of 1°-3°, they are arranged neatly towards the reference plane on one side under the limiting action of the damping limiting member.

[0024] The infrared sensor detects the arrangement number in real time, and when the preset threshold (3-15) is reached, it sends a batch completion signal to the PLC controller.

[0025] The PLC controller triggers the propulsion device, and the propulsion cylinder drives the synchronous push rod at a speed of 50-200 mm / s to synchronously and smoothly push the entire batch of empty tubes into the storage unit. Then the storage unit automatically descends by a corresponding height, and the device enters the next batch recycling process. In step three, the preset number is 3-15. The storage unit automatically drops to a height matching the diameter of the air pipe after the air pipe pushing is completed, and enters the next batch recycling process.

[0026] Compared with the prior art, the application has the beneficial effects that: The application adopts a three-stage progressive core structure: a first-stage U-shaped guide groove correction mechanism, which realizes dynamic flexible attitude correction by using the kinetic energy of the air pipe through an adjustable inclination angle and an elastic constraint boundary; a second-stage core innovative structure L-shaped transfer slide, which realizes dynamic connection through a flexible traction member and the upper stage, dissipates impact kinetic energy through a U-shaped buffer receiving end in a receiving state, and stably converts the air pipe movement state from axial sliding to transverse rolling by changing the inclination angle after linkage in a release state; and a third-stage air pipe arrangement mechanism and a pushing device, which realize self-arrangement and batch of the air pipe by relying on a preset inclination angle and a damping limit, and complete neat stacking through synchronous pushing.

[0027] 1. The recycling efficiency is greatly improved, and it is suitable for high-speed production lines The application realizes full-process automation of air pipe recycling without manual intervention, and the single-hour processing capacity can reach 1000-1500, which matches the output speed of the air pipe of the high-speed production line, and completely solves the bottleneck problem of low efficiency of manual recycling.

[0028] The application integrates "receiving-correction-arrangement-stacking" into one, directly realizes neat stacking after recycling, and does not need secondary arrangement, further improving the production turnover efficiency.

[0029] 2. The air pipe damage rate is significantly reduced, and the cycle service life is prolonged Through the elastic constraint boundary, the multi-stage buffer structure and the flexible connection design, the rigid collision between the air pipe and the equipment and between the air pipes is greatly reduced, and the air pipe damage rate is reduced from 15%-20% of the prior art to less than 3%.

[0030] The cycle use times of the air pipe are increased by more than 30%, the new air pipe procurement cost and waste loss cost are reduced, and the resource utilization rate is improved.

[0031] 3. Energy consumption and operation cost are significantly reduced The application takes the gravitational potential energy as the main power source, only a small amount of energy is consumed by the single action of the pushing device and the pneumatic piston, and compared with the traditional electric recycling system, the energy consumption is reduced by more than 80%.

[0032] The core structure is simplified, the failure points such as motors and complex transmission parts are reduced, the equipment failure rate is reduced by 60%, the annual maintenance cost is only 5%-10% of the high-end robot scheme, the equipment cost is controlled within 50,000-100,000 yuan, and the cost demand of small and medium-sized enterprises is adapted.

[0033] 4. Adaptability, stable and reliable operation The arrangement channel width and the inclination angle range can be adjusted, and the paper or plastic empty tube with different diameters (30-100 mm) and lengths can be adapted, so that the needs of different chemical fiber production scenes can be met.

[0034] PLC control and sensor detection are adopted, the control precision is high, the stacking neatness is more than 99.5%, the equipment can be continuously and stably operated for 72 hours, and the long-period operation demand of the production line can be met. BRIEF DESCRIPTION OF DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiment or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0036] Figure 1 It is a structural schematic view of the gravity alignment and recovery device and method of the empty tube.

[0037] Figure 2 It is a structural schematic view of the U-shaped guide groove correction mechanism in the gravity alignment and recovery device and method of the empty tube.

[0038] Figure 3 It is a structural schematic view of the L-shaped transfer slide in the gravity alignment and recovery device and method of the empty tube.

[0039] Figure 4 It is a structural schematic view of the empty tube arrangement mechanism and the propelling device in the gravity alignment and recovery device and method of the empty tube.

[0040] Figure 5 It is a flow chart of the gravity alignment and recovery device and method of the empty tube.

[0041] In the figure: 1-U-shaped guide groove correction mechanism, 11-first-stage correction guide piece, 12-second-stage correction guide piece, 13-fixed shaft, 14-guide groove rotating shaft, 15-flexible traction piece, 2-L-shaped transfer slide, 21-buffer receiving end, 22-L-shaped transfer slide rotating shaft, 3-empty tube arrangement mechanism, 31-limiting buffer slope, 32-damping limiting piece, 4-propelling device, 41-synchronous push rod, 5-rack, 51-rack extension device. DETAILED DESCRIPTION

[0042] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0043] With reference to Figure 1 The present application relates to a gravity alignment recovery device for air pipes, and the specific structure is as follows: The device comprises a rack 5, a U-shaped guide groove correction mechanism 1, an L-shaped transfer chute 2, an air pipe alignment mechanism 3, a pushing device 4, a control system and a flexible traction member 15, which are sequentially connected in the conveying direction of the air pipe. The rack 5 is made of aluminum alloy, and the mechanisms are sequentially installed in the conveying direction of the air pipe. The gap at the interface is less than 2 mm, which ensures smooth passing of the air pipe.

[0044] With reference to Figure 2 The U-shaped guide groove correction mechanism 1 is the first receiving and attitude correction unit of the device and is obliquely installed on the rack 5. Its main function is to receive the falling air pipe from the upstream equipment (such as a springing machine) and to pre-correct the falling attitude. The design feature of the mechanism is that the horizontal inclination angle is fixed (for example, 20°), and the axial (length direction) inclination angle is adjustable. Specifically, the guide groove rotating shaft 14 at the bottom of the mechanism is hinged with the rack 5, and a separate driving mechanism (such as a pneumatic piston) is used to drive the rotation of the shaft, so that the axial inclination angle is switched between a small angle (such as 40°) for receiving the air pipe and a large angle (such as 80°) for releasing the air pipe. After the air pipe enters the mechanism, it is guided to the designated area under the action of the fixed horizontal inclination angle and gravity, and then the kinetic energy of the air pipe causes the controllable deformation of the elastic restraint layer on the inner wall of the groove body, forming a dynamic and multi-point contact correction channel, which effectively absorbs the impact energy and corrects the deflection and skew of the air pipe. In order to further optimize the guiding and correcting effect, a first-stage correction guide piece 11 is arranged on the upper side of the groove body, and a second-stage correction guide piece 12 is arranged on the lower side of the other side, and the two guide pieces work together to constrain and guide the movement track of the air pipe. The driving mechanism (such as a pneumatic piston) acts on the fixed shaft 13 area to drive the mechanism to switch between the 40° inclination angle for receiving the air pipe and the 80° inclination angle for releasing the air pipe, and the mechanism has a transverse inclination angle of 15°.

[0045] With reference to Figure 3The L-shaped transfer chute 2 is arranged downstream of the U-shaped guide groove correction mechanism 1 and serves as a buffer and motion state conversion unit. The L-shaped transfer chute 2 is installed on the frame 5 through a frame extension device 51, and is provided with an L-shaped transfer chute rotating shaft 22 connected with the frame extension device 51, so that the fixed inclination angle of the L-shaped transfer chute 2 can be adjusted. The main function of the L-shaped transfer chute 2 is to receive the empty tubes released from the U-shaped guide groove correction mechanism 1, to buffer the kinetic energy of the empty tubes through the L-shaped structure, and to convert the motion state of the empty tubes from axial sliding along the inclined surface to a state of rolling to the next mechanism, so as to realize secondary conversion of gravitational potential energy. In order to ensure smooth transition of the empty tubes during switching of the mechanism, the device is further provided with a flexible traction member 15 connected with the inlet end of the L-shaped transfer chute 2 and the U-shaped guide groove correction mechanism 1. When the inclination angle of the U-shaped guide groove correction mechanism 1 changes, the flexible traction member 15 is pulled or released to drive the buffer receiving end 21 of the L-shaped transfer chute 2 to adjust the angle synchronously, so that the speed of the empty tubes under the traction of gravity can always ensure smooth connection between the outlets and inlets of the two mechanisms, and steps or collisions are avoided.

[0046] Preferably, the flexible traction member 15 is a steel wire rope or the like, one end of which is connected with the secondary correction guide, and the other end of which is connected with the buffer receiving end 21 of the L-shaped transfer chute 2. The flexible traction member 15 connects the U-shaped guide groove correction mechanism 1 and the L-shaped transfer chute 2. When the inclination angle of the U-shaped guide groove correction mechanism 1 changes, the flexible traction member 15 drives the receiving end of the L-shaped transfer chute 2 to adjust the angle synchronously, so as to maintain smooth connection between the two mechanisms.

[0047] Referring to Figure 4 The empty tube arrangement mechanism 3 is connected with the outlet end of the L-shaped transfer chute 2 and serves as a whole arrangement and batch unit. The function of the empty tube arrangement mechanism 3 is to arrange the empty tubes rolled in after buffering automatically. In order to realize this function, the overall plate surface of the empty tube arrangement mechanism 3 maintains a small preset inclination angle (usually 1° to 2°) relative to the horizontal plane. Under this inclination angle, a component force of the gravity acting on the empty tubes will continuously make the empty tubes roll to the lower side (defined as the arrangement reference surface), so as to realize automatic close arrangement. In structure, a limiting buffer slope 31 is arranged at the inlet side of the empty tube arrangement mechanism 3, which is used to guide the empty tubes to enter and be preliminarily limited; and a damping limiting member 32 is arranged at the other side (for example, the right side) of the empty tube arrangement mechanism 3, which is usually a plastic baffle, used to further slow down the speed of the empty tubes and prevent the empty tubes from rebounding and deviating, so as to ensure that each empty tube can be accurately close to the arrangement reference surface.

[0048] Referring to Figure 4The pushing device 4 is arranged on one side of the arrangement direction of the empty tube arrangement mechanism 3 and serves as a stacking execution unit. When the empty tubes gathered in the empty tube arrangement mechanism 3 reach a preset number (i.e., a batch of collection is completed), the pushing device 4 pushes the empty tubes to a storage unit (such as a frame) in a whole and synchronous manner. The pushing device 4 comprises a pushing cylinder and a synchronous pushing rod 41 fixedly connected with a piston rod. The length of the synchronous pushing rod 41 is specially designed to cover the whole length of the effective arrangement area of the empty tube arrangement mechanism 3. When the cylinder is in action, the synchronous pushing rod 41 simultaneously acts on the end of all the empty tubes in the whole row, ensuring that the empty tubes are smoothly and synchronously pushed out, so that the formed neat row is maintained during the transfer process, and the neat stacking is realized. The length of the synchronous pushing rod 41 is consistent with the effective arrangement length of the empty tube arrangement mechanism 3.

[0049] The control system is used to realize the automatic control of the whole process. The control system takes a PLC controller as the core and is matched with infrared sensors and actuators. The infrared sensors are installed at the end of the batch collection of the empty tube arrangement mechanism 3 and are used to detect the arrangement number of the empty tubes. The PLC controller is used to receive the infrared sensor signal and control the action of the pushing device 4 and the lifting of the storage unit.

[0050] The embodiment is applied to a polyester POY production workshop, is connected with the empty tube output end of a single elasticizer, the empty tube is made of paper material, has a diameter of 125 mm and a length of 150 mm. After 72 hours of continuous operation test: The accumulated processing empty tubes are 57600, the single-hour processing amount is 1200, and the processing amount of the elasticizer is 1000 per hour.

[0051] The damage rate of the empty tubes is less than 2%, only 1100 empty tubes have slight scratches, and there is no fragmentation; the recycling number is increased from 7 times to not less than 12 times.

[0052] The total energy consumption of the equipment is 0.3 kW•h / h, which is reduced by 83.3% compared with the traditional electric recycling equipment (1.8 kW•h / h).

[0053] The stacking neatness reaches 99.8%, the empty tubes in the frame are arranged closely, there is no skewing and winding phenomenon, and the empty tubes can directly enter the subsequent process.

[0054] Referring to Figure 5 A use method of the gravity arrangement recycling device of empty tubes, comprising the following steps: Step one: acceleration and flexible posture correction: the U-shaped guide groove correction mechanism 1 is adjusted to a receiving axial inclination of 30-50°, the empty tubes accelerate to slide under the action of gravity, and the speed is reduced and the posture deviation is corrected through the cooperative action of the guide piece; Specifically, the U-shaped guide groove correction mechanism 1 is adjusted to an axial receiving angle of 30°-50° to receive the falling empty tubes from the upstream equipment.

[0055] The empty tubes slide along the guide groove under the action of gravity at a horizontal fixed angle (10°-20°), and the kinetic energy impacts the elastic constraint boundary of the inner wall of the guide groove, causing controllable elastic deformation and forming a flexible correction channel with multiple-point contact.

[0056] Under the cooperative constraint of the primary and secondary correction guides, the attitude deviation and axial deflection of the empty tubes are corrected, achieving low-damage attitude calibration.

[0057] Step two: buffering and motion state conversion: the U-shaped guide groove correction mechanism 1 is switched to a release axial angle of 60°-90°, and the L-shaped transfer chute 2 is synchronously adjusted by the flexible traction member 15. After buffering through the L-shaped transfer chute 2, the motion state of the empty tubes is converted from axial sliding to lateral rolling. Specifically, after the attitude correction is completed, the axial angle of the U-shaped guide groove correction mechanism 1 is switched to a release state of 60°-90°, and the buffering receiving end 21 of the L-shaped transfer chute 2 is synchronously adjusted by the flexible traction member 15 to ensure smooth connection.

[0058] The empty tubes enter the L-shaped transfer chute 2, and under the action of the U-shaped buffering receiving end 21 and the chute structure, the falling kinetic energy is buffered and absorbed; at the same time, under the cooperative action of the axial and lateral angles of the chute, the gravitational potential energy is converted into kinetic energy again, and the motion state is smoothly converted from axial sliding to lateral rolling.

[0059] Step three: arranging and synchronously stacking: the empty tubes enter the empty tube arrangement mechanism 3, and under the action of the lateral angle and the damping limiting member 32, they are arranged in order. When the number reaches the preset number, the PLC controller triggers the propulsion device 4 to synchronously push the entire batch of empty tubes into the storage unit.

[0060] Specifically, the empty tubes in rolling state enter the empty tube arrangement mechanism 3 smoothly through the limiting and buffering slope 31, and under the action of the lateral angle of 1°-3°, they are arranged in order towards the reference plane on one side under the limiting action of the damping limiting member 32.

[0061] The infrared sensor detects the arrangement number in real time, and sends a batch completion signal to the PLC controller when the number reaches the preset threshold (3-15).

[0062] The PLC controller triggers the propulsion device 4, and the synchronous push rod 41 driven by the propulsion cylinder pushes the entire batch of empty tubes into the storage unit at a speed of 50-200 mm / s; then the storage unit automatically descends by a corresponding height, and the device enters the next batch recycling process In step three, the preset number is 3-15. The storage unit automatically drops to a height matching the diameter of the empty tube after the empty tube pushing is completed, and enters the next batch of recycling process.

[0063] The present application is mainly applied to the production link of the chemical fiber textile industry, and has an automatic operation environment suitable for taking the wire equipment, the elasticizer and other spinning equipment after completing the wire taking and winding, and subsequent collection, arrangement and stacking of the released POY empty tube. The present embodiment can seamlessly connect the existing production line downstream, realize continuous and stable recovery of the empty tube, effectively replace the traditional manual picking, sorting and stacking of high-strength and low-efficiency operation mode. The gravity-driven design and low-damage characteristics are especially suitable for deployment in the production environment of multiple machines, large quantities and long periods in the spinning workshop, and the manufacturing cost and operating cost of the present embodiment are relatively low, which meets the economic benefits. The present embodiment utilizes gravity potential energy to drive, realizes efficient, low-loss and automatic recovery and neat stacking of the empty tube through flexible correction of the U-shaped groove, linkage buffering of the L-shaped slide, self-alignment of the slightly inclined arrangement channel and pneumatic synchronous pushing.

[0064] The empty tube recovery device disclosed by the present application can avoid the empty tube from directly falling from a high place, reduce kinetic energy and reduce empty tube loss, and greatly prolong the service life.

[0065] The empty tube recovery device disclosed by the present application utilizes gravity potential energy as a power source, and the motor is rarely involved, which effectively reduces the system energy consumption and significantly reduces the operating cost.

[0066] The empty tube recovery device disclosed by the present application eliminates complex motor transmission, greatly simplifies the core mechanical structure, reduces equipment failure points, has high running stability, and greatly reduces annual maintenance cost.

[0067] The device disclosed by the present application integrates an adjustable mechanical mechanism and an automatic control system. Through the cooperation of the sensor and the PLC controller, the full-process automation and precise control from full-tube detection, synchronous pushing to frame layer-by-layer descending are realized, the neatness of stacking is ensured, and the secondary arrangement process is eliminated.

[0068] The embodiments of the present application are described in detail in combination with the drawings, but the present application is not limited to the described embodiments. For those skilled in the art, various changes, modifications, replacements and variations of the embodiments can be made without departing from the principles and spirits of the present application, and still fall within the protection scope of the present application.

Claims

1. A gravity aligning and recovering device for air tubes, characterized by: The machine frame, the U-shaped guide slot correction mechanism, the L-shaped transfer slide, the empty tube arrangement mechanism, the propulsion device, the control system and the flexible traction member are sequentially connected along the empty tube conveying direction; The U-shaped guide slot correction mechanism is obliquely installed on the machine frame and used for receiving the empty tube and correcting the attitude; The L-shaped transfer slide is arranged downstream of the U-shaped guide slot correction mechanism and used as a core buffer and state conversion component, which includes a U-shaped buffer receiving end and an L-shaped bending slide, is used for dissipating the impact kinetic energy of the empty tube through the buffer receiving end, and converts the movement state of the empty tube from axial sliding to transverse rolling through the bending structure; The empty tube arrangement mechanism is connected to the outlet end of the L-shaped transfer slide and used for self-alignment and batch collection of the empty tube; The propulsion device is arranged on one side of the empty tube arrangement mechanism and used for batch pushing of the empty tube; The control system is used for realizing automatic control of the whole process; One end of the flexible traction member is connected to the secondary correction guide piece of the U-shaped guide slot correction mechanism, and the other end is connected to the buffer receiving end of the L-shaped transfer slide.

2. The gravity aligning and recovering device of empty tubes according to claim 1, characterized in that: The L-shaped transfer slide is installed through the machine frame extension device and is connected with the extension device through the L-shaped transfer slide rotating shaft; the L-shaped transfer slide is axially provided with a fixed inclination angle of 1°-5°, and the transverse inclination angle adjustment range is-15° to 15°; the buffer receiving end of the L-shaped transfer slide is a U-shaped structure, which is composed of a front side wall and a right side wall to form an L-shaped bending wall; the buffer receiving end is linked with the U-shaped guide slot correction mechanism through the flexible traction member.

3. The apparatus of claim 1, wherein: The bottom of the U-shaped guide slot correction mechanism is hinged with the machine frame through a guide slot rotating shaft, is driven to rotate around the shaft through a driving mechanism, and the axial inclination angle adjustment range is 30°-90°; the U-shaped guide slot correction mechanism is horizontally provided with a fixed inclination angle of 10°-20°, guiding the empty tube to slide to the lower side.

4. The apparatus according to claim 1 or 2, wherein: The U-shaped guide slot correction mechanism is provided with a primary correction guide piece on one side of the groove body and a secondary correction guide piece on the other side of the groove body.

5. The apparatus of claim 1, wherein: The empty tube arrangement mechanism is provided with a transverse inclination angle of 1°-3° relative to the horizontal plane, is provided with a limiting buffer slope on the inlet side, and the slope is 30°-60°; one side of the arrangement channel of the empty tube arrangement mechanism is provided with a damping limiting member.

6. The apparatus of claim 1, wherein: The propulsion device includes a propulsion cylinder and a synchronous push rod, and the length of the synchronous push rod is consistent with the effective arrangement length of the empty tube arrangement mechanism.

7. The apparatus of claim 1, wherein: The control system takes a PLC controller as the core, is matched with an infrared sensor and an actuator; the infrared sensor is installed at the batch collection end of the empty tube arrangement mechanism and is used for detecting the arrangement number of the empty tube; the PLC controller is used for receiving the infrared sensor signal, controlling the action of the propulsion device and the lifting of the storage unit.

8. The use of the gravity aligning and recovering device of the air pipe according to any one of claims 1-7, characterized in that: The method comprises the following steps: Step one: acceleration and flexible attitude correction: the U-shaped guide slot correction mechanism is adjusted to a receiving axial inclination angle of 30-50°, the empty tube is accelerated to slide under the action of gravity, the speed is reduced through the cooperation of the guide member, and the attitude deviation is corrected; Step two: buffer and motion state conversion: after the empty tube enters the L-shaped transfer chute, the U-shaped buffer receiving end and the L-shaped bending wall of the empty tube are buffered and limited; at the same time, the U-shaped guide groove correction mechanism is switched to a release axial inclination angle of 60°-90°, and the L-shaped transfer chute is synchronously adjusted in angle through the flexible traction member, so that the motion state of the empty tube is smoothly converted from axial sliding to transverse rolling after the buffering is completed, and the potential energy is converted into kinetic energy again under the action of gravity; Step three: arrange and batch and synchronous stacking: the empty tube enters the empty tube arranging mechanism, and is arranged in an orderly manner under the action of the transverse inclination angle and the damping limiting member, and after reaching the preset number, the PLC controller triggers the pushing device to synchronously push the whole batch of empty tubes into the storage unit.

9. The method of claim 8, wherein: In the step three, the preset number is 3-15; After the storage unit is pushed by the empty tube, it is automatically adjusted to a height matching the diameter of the empty tube, and enters the next batch recycling process.

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