A kind of spinning machine bowl cylinder shaft liquid nitrogen cold assembly device

Abstract

The application is suitable for the technical field of mechanical assembly, and provides a spinning machine groove cylinder shaft liquid nitrogen cold assembly device.The device comprises a cooling system and an assembly system.The cooling system is composed of a liquid nitrogen storage bottle, an evaporator, a cooling rack and a cooling cylinder.The assembly system is an assembly mechanical arm, and further comprises a driving control mechanism, a flow adjusting mechanism and a supporting mechanism.The flow adjusting mechanism is composed of a fixing base, a reciprocating assembly, a mounting shaft and an S-shaped spoiler.The supporting mechanism cooperates with the driving control mechanism to complete automatic feeding and discharging of the spinning machine groove cylinder shaft, which not only facilitates rapid cooling of the spinning machine groove cylinder shaft by low-temperature nitrogen, but also facilitates clamping and interference assembly of the spinning machine groove cylinder shaft by the assembly mechanical arm.The flow adjusting mechanism cooperates with the driving control mechanism to complete disturbance of the low-temperature nitrogen, and forms a circulation mode of airflow acceleration and airflow supply in the cooling cylinder, so that the low-temperature nitrogen can fully contact with the spinning machine groove cylinder shaft, eliminates airflow dead angles, reduces the cooling and cold assembly time of the spinning machine groove cylinder shaft, and meets the demand of the device for batch cold assembly of the spinning machine groove cylinder shaft.

Description

Technical Field

[0001] This invention belongs to the field of mechanical assembly technology, and in particular relates to a liquid nitrogen cold assembly device for textile machinery trough shaft. Background Technology

[0002] In the manufacturing process of textile machinery, the textile machinery grooved shaft is a core transmission component of winding machines and warping machines. Its assembly accuracy with bearing housings and sleeves directly affects the operational stability of the textile machinery and the quality of yarn processing. Since the textile machinery grooved shaft needs to withstand high-speed rotating loads, interference fit is usually used to achieve assembly and fixation. Liquid nitrogen cold fitting technology has become the mainstream solution for interference fit of such components because it can cause the textile machinery grooved shaft to shrink radially through low temperature. This technology can reduce assembly impact force and avoid damage to the surface of parts.

[0003] The existing cold assembly equipment includes a liquid nitrogen storage tank, a vaporizer, a cooling box, a fixed support, and a guide plate. The fixed support is installed inside the cooling box and is used to place the textile machine trough shaft. The textile machine trough shaft is placed in the cooling box manually. After the liquid nitrogen is vaporized into low-temperature nitrogen gas by the vaporizer, it enters the cooling box through the air inlet pipe. The guide plate guides the flow of nitrogen gas to cool the textile machine trough shaft on the fixed support. After cooling, the manual laborer uses a special tool to reach into the cooling box to grab the textile machine trough shaft and transfer it to the assembly station to complete the assembly.

[0004] However, the existing devices still have certain defects in actual use: First, the guide plates of the existing devices are generally fixed straight plates, which can only guide the airflow in one direction. The flow path of low-temperature nitrogen is fixed, and the thermal boundary layer on the spinning machine drum shaft is difficult to be effectively broken, resulting in low heat exchange efficiency and inability to achieve rapid cooling of the spinning machine drum shaft.

[0005] Secondly, the existing equipment still uses manual handling to load and unload the spinning machine drum shaft. This is not only inefficient and time-consuming, but also poses a risk of frostbite or nitrogen asphyxiation due to the low temperature environment, which may lead to production accidents.

[0006] Therefore, in view of the above situation, there is an urgent need to develop a liquid nitrogen cold assembly device for textile machinery drum shafts to overcome the shortcomings in current practical applications. Summary of the Invention

[0007] To address the shortcomings of existing technologies, the purpose of this invention is to provide a liquid nitrogen cold assembly device for textile machinery drum shafts, thereby solving the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] A liquid nitrogen cold assembly device for a textile machinery drum shaft includes a cooling system and an assembly system. The cooling system consists of a liquid nitrogen storage bottle, an evaporator, a cooling rack, and a cooling cylinder. The assembly system is an assembly robotic arm. A horizontal cooling cylinder is fixed on the cooling rack. The cooling cylinder has an open structure on one side near the assembly robotic arm. A side-sealing assembly is provided at one end of the open structure on the cooling cylinder. An air inlet pipe and an air outlet pipe are respectively installed on the cooling cylinder. The air inlet pipe is connected to the evaporator, and the air outlet pipe is connected to an air handling unit. The device also includes:

[0010] The drive control mechanism has one end fixed to the cooling rack and located on one side of the cooling cylinder, and the other end of the drive control mechanism passes through the cooling cylinder and is concentric with the cooling cylinder, and the other end of the drive control mechanism has an axially threaded groove.

[0011] The flow regulation mechanism consists of a fixed base, a reciprocating assembly, a mounting shaft, and S-shaped baffles. The fixed base is perpendicular to the axis of the cooling cylinder and fixedly connected to its inner wall. The reciprocating assembly, which is fixedly connected to the drive and control mechanism, is mounted on the fixed base. The mounting shaft is symmetrically fixed to the reciprocating assembly, and S-shaped baffles are fixed on the mounting shaft. Both S-shaped baffles are arranged along the axis of the cooling cylinder and are parallel to its axis. The flow regulation mechanism works in conjunction with the drive and control mechanism to disturb the low-temperature nitrogen gas and form a circulation mode of airflow acceleration and airflow replenishment within the cooling cylinder.

[0012] A support mechanism is axially slidably mounted on the inner wall of the cooling cylinder. The support mechanism is located between two S-shaped baffles, and one end of the support mechanism is intermittently engaged with the threaded groove on the drive control mechanism. The support mechanism and the drive control mechanism work together to complete the automated loading and unloading of the textile machine drum shaft.

[0013] As a further technical solution of the present invention, the reciprocating assembly includes an eccentric gear, a connecting gear, a moving block, and a reciprocating spring. The eccentric gear is eccentrically disposed inside the cooling cylinder and eccentrically fixedly connected to the drive control mechanism. The two sides of the eccentric gear are symmetrically meshed with connecting gears. The two connecting gears are rotatably mounted on one side of the two moving blocks respectively. The two moving blocks are symmetrically and slidably mounted on both sides of the fixed seat. The other ends of the two moving blocks are perpendicularly fixedly connected to two mounting shafts respectively. A reciprocating spring is installed between the two moving blocks and the inner wall of the fixed seat.

[0014] As a further technical solution of the present invention, the drive control mechanism includes a drive control motor, a transmission component and a drive control shaft. The drive control motor is fixed on the cooling rack and located on one side of the cooling cylinder. The drive control shaft passes through the cooling cylinder and is rotatably mounted on the cooling cylinder. One end of the drive control shaft is connected to the output end of the drive control motor through the transmission component. The other end of the drive control shaft is axially provided with a threaded groove that intermittently cooperates with the support mechanism.

[0015] As a further technical solution of the present invention, the support mechanism includes a guide rail, a T-shaped slider, a screw connection assembly, a support plate, and a Y-shaped support frame. The guide rail is arranged along the axial direction of the cooling cylinder and fixed on its inner wall. A T-shaped slider is slidably installed on the guide rail. A screw connection assembly is installed inside the T-shaped slider. The screw connection assembly is intermittently engaged with the threaded groove. A support plate is fixed on the top of the T-shaped slider. The support plate is located between two S-shaped baffles, and several Y-shaped supports for supporting the shaft of the textile machine trough are slidably installed on the support plate.

[0016] As a further technical solution of the present invention, the screw assembly includes a sliding column, a screw sleeve, a screw spring, a magnetic attractor one, and a magnetic attractor two. The sliding column is symmetrically slidably installed on both sides of the T-shaped slider. A screw sleeve that mates with the threaded groove is fixed to one end of the sliding column. A screw spring is installed between the screw sleeve and the inner wall of the T-shaped slider. A magnetic attractor one is fixed on the outer wall of the screw sleeve, and a magnetic attractor two is fixed on the inner wall of the T-shaped slider. The installation positions and installation directions of the magnetic attractor one and the magnetic attractor two are mutually corresponding, and the magnetic attractor one and the magnetic attractor two repel each other when energized.

[0017] As a further technical solution of the present invention, the screw sleeve adopts a semi-circular cylindrical structure, and the inner wall of the cylindrical structure is spirally provided with threaded teeth that cooperate with the threaded groove.

[0018] As a further technical solution of the present invention, the side sealing assembly includes a telescopic cylinder, a connecting plate and a sealing plate. The telescopic cylinder is perpendicular to the axis of the cooling cylinder and is symmetrically fixed on its upper and lower outer walls. A connecting plate is fixed on the output end of each of the two telescopic cylinders. A sealing plate for sealing the opening structure on the cooling cylinder is fixed on each of the two connecting plates. The two sealing plates are symmetrically distributed at the upper and lower ends of the cooling cylinder.

[0019] As a further technical solution of the present invention, a conical guide shroud is fixed on the inner wall of the cooling cylinder near one end of the air inlet pipe. The conical guide shroud is located below the air inlet pipe, with its large end facing the air inlet pipe and its small end facing the inside of the cooling cylinder. Guide ribs for guiding the low-temperature nitrogen gas are evenly distributed on the outer wall of the conical guide shroud, and reinforcing ribs are fixed on the inner wall of the conical guide shroud.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] When the support mechanism and the drive control mechanism are engaged with the threaded groove, the drive control mechanism can drive the support mechanism to move, realizing the automated loading and unloading of the textile machine trough shaft. This allows the textile machine trough shaft to not only fully enter the cooling area inside the cooling cylinder for rapid cooling by low-temperature nitrogen, but also to quickly move the cooled textile machine trough shaft outside the cooling cylinder, making it convenient for the assembly robot arm to grab the cooled textile machine trough shaft according to the preset path and complete its rapid interference fit assembly.

[0022] The drive mechanism drives the reciprocating assembly, which in turn drives two mounting shafts to reciprocate laterally within the cooling cylinder. These shafts, in turn, drive their respective S-shaped baffles to reciprocate laterally, causing the baffles to move radially along the cooling cylinder. This turbulence of the cryogenic nitrogen gas is achieved. The S-shaped design and radial reciprocating movement of the baffles alter the flow direction of the cryogenic nitrogen within the cooling cylinder, breaking the stable thermal boundary layer on the surface of the textile machinery trough shaft. When the baffles approach the trough shaft, the gap between them narrows, increasing the flow velocity of the cryogenic nitrogen. This high-speed airflow accelerates heat transfer. Conversely, when they move away, the baffles guide new cryogenic nitrogen into the space between them, creating a cycle of airflow acceleration and replenishment. This ensures the cryogenic nitrogen fully contacts the trough shaft, eliminating dead zones, reducing cooling and cold-fitting time, and improving the efficiency of cold-fitting, thus meeting the equipment's requirements for mass cold-fitting of textile machinery trough shafts.

[0023] To more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0024] Figure 1 This is a first-view structural schematic diagram of the liquid nitrogen cold assembly device for the textile machinery trough shaft provided in an embodiment of the present invention.

[0025] Figure 2 This is a second-view structural schematic diagram of the liquid nitrogen cold assembly device for the textile machinery trough shaft provided in an embodiment of the present invention.

[0026] Figure 3 for Figure 2 A schematic diagram of the intermediate cooling cylinder and the drive control mechanism.

[0027] Figure 4 for Figure 3 A half-sectional view of the intermediate cooling cylinder and drive control mechanism structure from the side.

[0028] Figure 5 for Figure 4 Top view of the cross-section of the intermediate cooling cylinder and drive control mechanism.

[0029] Figure 6 for Figure 5Enlarged view of the central flow control mechanism.

[0030] Figure 7 for Figure 6 Side view of the structure of the flow control mechanism.

[0031] Figure 8 for Figure 6 Enlarged view of the central support structure.

[0032] Figure 9 for Figure 8 Enlarged view of the structure of the screw-in assembly.

[0033] Figure 10 for Figure 3 A schematic diagram of the middle-side sealing assembly.

[0034] Figure 11 for Figure 5 A schematic diagram of the structure of the conical fairing.

[0035] Reference numerals: 100-Cooling rack, 200-Cooling cylinder, 210-Intake pipe, 220-Exhaust pipe, 230-Side sealing assembly, 231-Telescopic cylinder, 232-Connecting plate, 233-Sealing plate, 300-Drive control mechanism, 310-Drive control motor, 320-Transmission component, 330-Drive control shaft, 340-Threaded groove, 400-Flow adjustment mechanism, 410-Fixed base, 420-Reciprocating assembly, 421-Eccentric gear, 422-Connecting gear, 423 - Moving block, 424 - Reciprocating spring, 430 - Mounting shaft, 440 - S-type spoiler, 500 - Assembly robot arm, 600 - Support mechanism, 610 - Guide rail, 620 - T-type slider, 630 - Screwed assembly, 631 - Sliding column, 632 - Screwed sleeve, 633 - Screwed spring, 634 - Magnetic component one, 635 - Magnetic component two, 640 - Support plate, 650 - Y-type support, 700 - Conical guide fairing, 710 - Guide rib, 720 - Reinforcing rib. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0037] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0038] like Figures 1 to 11As shown, an embodiment of the present invention provides a liquid nitrogen cold assembly device for a textile machinery drum shaft, comprising a cooling system and an assembly system. The cooling system consists of a liquid nitrogen storage bottle, an evaporator, a cooling rack 100, and a cooling cylinder 200. The assembly system is an assembly robotic arm 500, with an assembly gripper mounted at its end. The assembly robotic arm 500 is located on one side of the cooling rack 100. A horizontal cooling cylinder 200 is fixed on the cooling rack 100. An opening structure is provided on the side of the cooling cylinder 200 near the assembly robotic arm 500. A side sealing assembly 230 is provided at one end of the opening structure on the cooling cylinder 200. An air inlet pipe 210 and an exhaust pipe 220 are respectively installed on the cooling cylinder 200. The air inlet pipe 210 is connected to the evaporator, and the exhaust pipe 220 is connected to an air handling unit. The device also includes:

[0039] A drive control mechanism 300, one end of which is fixed on the cooling rack 100 and located on one side of the cooling cylinder 200, the other end of which passes through the cooling cylinder 200 and is concentric with the cooling cylinder 200, and a threaded groove 340 is axially formed on the other end of the drive control mechanism 300.

[0040] The flow regulation mechanism 400 consists of a fixed base 410, a reciprocating assembly 420, a mounting shaft 430, and an S-shaped spoiler 440. The fixed base 410 is perpendicular to the axis of the cooling cylinder 200 and is fixedly connected to its inner wall. The reciprocating assembly 420, which is fixedly connected to the drive control mechanism 300, is mounted on the fixed base 410. The mounting shaft 430 is symmetrically fixed to the reciprocating assembly 420. An S-shaped spoiler 440 is fixed on the mounting shaft 430. Both S-shaped spoilers 440 are arranged along the axial direction of the cooling cylinder 200 and are parallel to its axis.

[0041] A support mechanism 600 is axially slidably mounted on the inner wall of the cooling cylinder 200. The support mechanism 600 is located between two S-shaped spoilers 440. One end of the support mechanism 600 is intermittently engaged with the threaded groove 340 on the drive control mechanism 300.

[0042] When the support mechanism 600 engages with the threaded groove 340 on the drive control mechanism 300 and is located outside the cooling cylinder 200, the textile machine trough shaft is horizontally placed on the support mechanism 600 by manual operation or by the assembly robot arm 500. The drive control mechanism 300 can drive the support mechanism 600 and the textile machine trough shaft on it to move into the cooling cylinder 200 by rotation and engagement with the threaded groove 340, so that the textile machine trough shaft can move between the two S-shaped baffles 440 and completely enter the cooling area inside the cooling cylinder 200. Then the support mechanism 600 separates from the threaded groove 340 on the drive control mechanism 300, so that the support mechanism 600 and the textile machine trough shaft on it remain stationary relative to the cooling cylinder 200.

[0043] After the spinning machine drum shaft moves to the designated position, the side sealing assembly 230 seals one end of the open structure on the cooling cylinder 200, forming a sealed cooling space. The evaporator vaporizes the liquid nitrogen in the liquid nitrogen storage bottle into nitrogen gas and delivers it to the cooling cylinder 200 through the inlet pipe 210. At the same time, the drive control mechanism 300 continues to work and drives the reciprocating assembly 420. The reciprocating assembly 420 drives the two mounting shafts 430 to reciprocate laterally within the cooling cylinder 200. The two mounting shafts 430 drive their respective S-shaped baffles 440 to reciprocate laterally, causing the S-shaped baffles 440 to reciprocate radially along the cooling cylinder 200, thereby completing the turbulence of the low-temperature nitrogen gas. The S-shaped baffles 440, through their S-shaped design and... The radial reciprocating movement can change the flow direction of cryogenic nitrogen in the cooling cylinder 200, breaking the stable thermal boundary layer on the surface of the textile machine groove shaft. When the S-shaped baffle 440 approaches the textile machine groove shaft, the gap between them narrows, which can increase the flow rate of cryogenic nitrogen. The high-speed airflow can accelerate heat transfer. When they move away from each other, the S-shaped baffle 440 can guide new cryogenic nitrogen into the space between the S-shaped baffle 440 and the textile machine groove shaft, thus forming a circulation mode of airflow acceleration and airflow replenishment. This allows the cryogenic nitrogen to fully contact the textile machine groove shaft, eliminating dead air zones, reducing the cooling and cold-fitting time of the textile machine groove shaft, improving the cold-fitting efficiency of the textile machine groove shaft, and meeting the equipment's requirements for batch cold-fitting of textile machine groove shafts.

[0044] After the textile machine trough shaft has cooled down, the side sealing assembly 230 opens, the drive control mechanism 300 drives the support mechanism 600 and the textile machine trough shaft to reset, and the assembly robot arm 500 grabs the cooled textile machine trough shaft according to the preset path and completes the rapid interference fit assembly.

[0045] In a preferred embodiment, the assembly robot arm 500 is preferably a six-axis assembly robot arm 500, which is located between the cooling system and the equipment base (textile machine trough shaft mounting base). It accurately grips the cooled textile machine trough shaft through a preset program and assembles it onto the equipment base.

[0046] The S-shaped spoiler 440 is preferably a flat plate spoiler with an S-shaped cross-section, preferably made of 316L stainless steel. Its length is slightly less than the length of the cooling cylinder 200, and its width is adapted to the inner diameter of the cooling cylinder 200.

[0047] like Figures 4 to 7 As shown, in a preferred embodiment of the present invention, the reciprocating assembly 420 includes an eccentric gear 421, a connecting gear 422, a moving block 423, and a reciprocating spring 424. The eccentric gear 421 is eccentrically disposed inside the cooling cylinder 200 and eccentrically fixedly connected to the drive control mechanism 300. The connecting gears 422 are symmetrically meshed on both sides of the eccentric gear 421. The two connecting gears 422 are rotatably mounted on one side of the two moving blocks 423 respectively. The two moving blocks 423 are symmetrically and slidably mounted on both sides of the fixed seat 410. The other ends of the two moving blocks 423 are perpendicularly fixedly connected to two mounting shafts 430 respectively. A reciprocating spring 424 is installed between the two moving blocks 423 and the inner wall of the fixed seat 410.

[0048] The reciprocating spring 424, by releasing its own elastic force, can drive the movable block 423 to move on the fixed base 410, so that the movable block 423 can drive the connecting gear 422 to always mesh with the eccentric gear 421; the drive control mechanism 300 drives the eccentric gear 421 to rotate, and the eccentric gear 421, through eccentric rotation and meshing with the connecting gear 422, can drive the movable block 423 to reciprocate laterally on the fixed base 410, the movable block 423 drives the mounting shaft 430 to reciprocate laterally, and the two mounting shafts 430 drive their respective S-shaped spoilers 440 to reciprocate laterally, so that the S-shaped spoilers 440... The baffle 440 moves radially back and forth along the cooling cylinder 200 to turbulent the low-temperature nitrogen gas. The S-shaped baffle 440, through its S-shaped design and radial reciprocating movement, can change the flow direction of the low-temperature nitrogen gas in the cooling cylinder 200, break the stable thermal boundary layer on the surface of the textile machine groove shaft, and form a circulation mode of airflow acceleration and airflow replenishment. This allows the low-temperature nitrogen gas to fully contact the textile machine groove shaft, eliminates dead air zones, reduces the cooling and cold installation time of the textile machine groove shaft, improves the cold installation efficiency of the textile machine groove shaft, and meets the equipment's requirements for batch cold installation of textile machine groove shafts.

[0049] like Figures 2 to 9As shown, in a preferred embodiment of the present invention, the drive control mechanism 300 includes a drive control motor 310, a transmission component 320, and a drive control shaft 330. The drive control motor 310 is fixed on the cooling rack 100 and located on one side of the cooling cylinder 200. The drive control shaft 330 passes through the cooling cylinder 200 and is rotatably mounted on the cooling cylinder 200. One end of the drive control shaft 330 is connected to the output end of the drive control motor 310 through the transmission component 320. The other end of the drive control shaft 330 is axially provided with a threaded groove 340 that intermittently cooperates with the support mechanism 600.

[0050] When the support mechanism 600 engages with the threaded groove 340 on the drive shaft 330 and is located outside the cooling cylinder 200, the textile machine trough shaft is horizontally placed on the support mechanism 600 manually or by the assembly robot arm 500. The drive motor 310 drives the drive shaft 330 to rotate via the transmission component 320. The drive shaft 330 drives the threaded groove 340 to rotate. Through rotation and engagement with the cooling cylinder 200, the threaded groove 340 drives the support mechanism 600 and the textile machine trough shaft on it to move into the cooling cylinder 200. This allows the textile machine trough shaft to move between the two S-shaped spoilers 440 and fully enter the cooling area within the cooling cylinder 200. Subsequently, the support mechanism 600 and the threaded groove 340... The separation ensures that the support mechanism 600 and the textile trough shaft on it remain stationary relative to the cooling cylinder 200. When the textile trough shaft moves to the designated position, the drive motor 310 drives the drive shaft 330 to rotate through the transmission component 320. The drive shaft 330 drives the eccentric gear 421 to rotate eccentrically, thereby causing the S-shaped baffle 440 to reciprocate radially within the cooling cylinder 200, thus completing the turbulence of the low-temperature nitrogen gas. After the textile trough shaft is cooled, the side sealing assembly 230 opens, the drive motor 310 reverses its operation and drives the support mechanism 600 and the textile trough shaft to reset. The assembly robot arm 500 picks up the cooled textile trough shaft according to the preset path and completes its rapid interference fit assembly.

[0051] In a preferred embodiment, the drive motor 310 is preferably a reversible servo motor; the transmission component 320 is preferably a transmission structure consisting of a synchronous pulley and a synchronous belt.

[0052] like Figures 4 to 9As shown, in a preferred embodiment of the present invention, the support mechanism 600 includes a guide rail 610, a T-shaped slider 620, a screw assembly 630, a support plate 640, and a Y-shaped support frame 650. The guide rail 610 is arranged along the axial direction of the cooling cylinder 200 and fixed on its inner wall. The T-shaped slider 620 is slidably mounted on the guide rail 610. The screw assembly 630 is installed inside the T-shaped slider 620. The screw assembly 630 is intermittently engaged with the threaded groove 340. The support plate 640 is fixed on the top of the T-shaped slider 620. The support plate 640 is located between two S-shaped baffles 440, and a plurality of Y-shaped supports 650 for supporting the shaft of the textile machine trough are slidably mounted on the support plate 640.

[0053] When the screw assembly 630 engages with the threaded groove 340, the drive shaft 330, through rotation and engagement with the screw assembly 630, can drive the T-shaped slider 620 to slide on the guide rail 610. The T-shaped slider 620 drives the support plate 640 and the Y-shaped support 650 to move, thereby driving the textile machine trough shaft to quickly enter and exit the cooling cylinder 200, realizing automated loading and unloading of the textile machine trough shaft, reducing the cold assembly time of the textile machine trough shaft, and improving the cooling efficiency of the device.

[0054] In a preferred embodiment, the Y-shaped support 650 is preferably made of hardened steel and has a wear-resistant pad on its top end face.

[0055] like Figures 4 to 9 As shown, in a preferred embodiment of the present invention, the screw assembly 630 includes a sliding post 631, a screw sleeve 632, a screw spring 633, a magnetic attractor 634, and a magnetic attractor 635. The sliding post 631 is symmetrically slidably mounted on both sides of the T-shaped slider 620. One end of the sliding post 631 is fixed with a screw sleeve 632 that mates with the threaded groove 340. A screw spring 633 is installed between the screw sleeve 632 and the inner wall of the T-shaped slider 620. A magnetic attractor 634 is fixed on the outer wall of the screw sleeve 632, and a magnetic attractor 635 is fixed on the inner wall of the T-shaped slider 620. The installation positions and installation directions of the magnetic attractor 634 and the magnetic attractor 635 are mutually corresponding, and the magnetic attractor 634 and the magnetic attractor 635 repel each other when energized.

[0056] The threaded sleeve 632 preferably adopts a semi-circular cylindrical structure, and the inner wall of the cylindrical structure is spirally provided with threaded teeth that cooperate with the threaded groove 340.

[0057] When magnetic components 634 and 635 are not energized, the threaded spring 633 can drive the threaded sleeve 632 to separate from the threaded groove 340, so that the support mechanism 600 and the textile machine drum shaft on it remain stationary relative to the cooling cylinder 200. The flow regulating mechanism 400 and the drive control mechanism 300 cooperate to achieve rapid cooling of the textile machine drum shaft. When magnetic components 634 and 635 are energized, the energized magnetic components 634 and 635 repel each other and drive the threaded sleeve 632 to move in the direction of the threaded groove 340, so that the threaded sleeve 632 and the threaded groove 340 can be effectively matched. With the screw spring 633 in a stretched state, the threaded groove 340, through rotation and engagement with the screw sleeve 632, can drive the T-shaped slider 620 to move on the guide rail 610. The T-shaped slider 620 simultaneously drives the support plate 640 and the Y-shaped support 650 to move. This not only drives the textile machine trough shaft to move into the cooling cylinder 200, allowing the textile machine trough shaft to move between the two S-shaped baffles 440 and fully enter the cooling area inside the cooling cylinder 200, but also drives the cooled textile machine trough shaft to move quickly to the outside of the cooling cylinder 200, facilitating the assembly robot arm 500 to grip and assemble it.

[0058] In a preferred embodiment, the magnetic chuck 634 and the magnetic chuck 635 are preferably electromagnets, and the magnetic chuck 634 is preferably an arc-shaped block structure adapted to the outer contour of the screw sleeve 632, while the magnetic chuck 635 is preferably a square block structure.

[0059] like Figure 1 , Figure 3 and Figure 10 As shown, in a preferred embodiment of the present invention, the side sealing assembly 230 includes a telescopic cylinder 231, a connecting plate 232, and a sealing plate 233. The telescopic cylinder 231 is perpendicular to the axis of the cooling cylinder 200 and is symmetrically fixed on its upper and lower outer walls. A connecting plate 232 is fixed on the output end of each of the two telescopic cylinders 231. A sealing plate 233 for sealing the opening structure on the cooling cylinder 200 is fixed on each of the two connecting plates 232. The two sealing plates 233 are symmetrically distributed at the upper and lower ends of the cooling cylinder 200.

[0060] The two telescopic cylinders 231 can move their respective connecting plates 232 up and down by telescopic movement. The two connecting plates 232 can move the two sealing plates 233 up and down. When the two sealing plates 233 are close to each other, they can close one end of the opening structure on the cooling cylinder 200, so that the cooling cylinder 200 forms a closed cooling space. When the two sealing plates 233 are far apart, they can open one end of the opening structure on the cooling cylinder 200, so that the drive control mechanism 300 can drive the support mechanism 600 to move and complete the loading and unloading of the textile machine trough shaft.

[0061] In a preferred embodiment, the sealing plate 233 is preferably a semi-circular plate structure, with a central hole for the drive control shaft 330 to pass through, and a semi-circular sealing strip that abuts against the outer wall of the cooling cylinder 200 on the inner side of the sealing plate 233.

[0062] like Figure 4 and Figure 11 As shown, in a preferred embodiment of the present invention, a conical guide shroud 700 is fixed on the inner wall of the cooling cylinder 200 near the end of the air inlet pipe 210. The conical guide shroud 700 is located below the air inlet pipe 210, with its large end facing the air inlet pipe 210 and its small end facing the interior of the cooling cylinder 200. Guide ribs 710 for guiding low-temperature nitrogen are evenly distributed on the outer wall of the conical guide shroud 700, and reinforcing ribs 720 are fixed on the inner wall of the conical guide shroud 700.

[0063] The conical structure of the conical guide shroud 700, in conjunction with the guide ribs 710, can transform the columnar airflow ejected from the inlet pipe 210 into a uniform annular airflow along the axial direction of the cooling cylinder 200. This avoids the axial stratification problem of strong local airflow or weak far-end airflow in traditional devices, allowing the low-temperature nitrogen to initially cover the entire length of the cooling cylinder 200. This facilitates the S-shaped baffle 440 to move and turbulent the airflow, breaking the thermal boundary layer on the surface of the grooved shaft and forming a three-dimensional airflow field with uniform axial coverage and radial internal and external circulation. This allows the low-temperature nitrogen to fully contact the textile machine grooved shaft, eliminating dead airflow angles, reducing the cooling and cold-fitting time of the textile machine grooved shaft, improving the cold-fitting efficiency of the textile machine grooved shaft, and meeting the device's requirements for batch cold-fitting of textile machine grooved shafts.

[0064] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A liquid nitrogen cold assembly device for textile machinery drum shafts, comprising a cooling system and an assembly system, wherein the cooling system consists of a liquid nitrogen storage bottle, an evaporator, a cooling rack, and a cooling cylinder; the assembly system is an assembly robotic arm; a horizontal cooling cylinder is fixed on the cooling rack; the cooling cylinder has an open structure on one side near the assembly robotic arm; a side-sealing assembly is provided at one end of the open structure on the cooling cylinder; an air inlet pipe and an air outlet pipe are respectively installed on the cooling cylinder; the air inlet pipe is connected to the evaporator; and the air outlet pipe is connected to an air handling unit. The device is characterized in that... Also includes: The drive control mechanism has one end fixed to the cooling rack and located on one side of the cooling cylinder, and the other end of the drive control mechanism passes through the cooling cylinder and is concentric with the cooling cylinder, and the other end of the drive control mechanism has an axially threaded groove. The flow regulation mechanism consists of a fixed base, a reciprocating assembly, a mounting shaft, and S-shaped baffles. The fixed base is perpendicular to the axis of the cooling cylinder and fixedly connected to its inner wall. The reciprocating assembly, which is fixedly connected to the drive and control mechanism, is mounted on the fixed base. The mounting shaft is symmetrically fixed to the reciprocating assembly, and S-shaped baffles are fixed on the mounting shaft. Both S-shaped baffles are arranged along the axis of the cooling cylinder and are parallel to its axis. The flow regulation mechanism works in conjunction with the drive and control mechanism to disturb the low-temperature nitrogen gas and form a circulation mode of airflow acceleration and airflow replenishment within the cooling cylinder. A support mechanism is axially slidably mounted on the inner wall of the cooling cylinder. The support mechanism is located between two S-shaped baffles, and one end of the support mechanism is intermittently engaged with the threaded groove on the drive control mechanism. The support mechanism and the drive control mechanism work together to complete the automated loading and unloading of the textile machine drum shaft.

2. The liquid nitrogen cold assembly device for textile machinery trough shafts according to claim 1, characterized in that, The reciprocating assembly includes an eccentric gear, a connecting gear, a moving block, and a reciprocating spring. The eccentric gear is eccentrically disposed inside the cooling cylinder and eccentrically fixedly connected to the drive control mechanism. The two sides of the eccentric gear are symmetrically meshed with connecting gears. The two connecting gears are rotatably mounted on one side of the two moving blocks respectively. The two moving blocks are symmetrically and slidably mounted on both sides of the fixed base. The other ends of the two moving blocks are perpendicularly fixedly connected to two mounting shafts respectively. A reciprocating spring is installed between the two moving blocks and the inner wall of the fixed base.

3. The liquid nitrogen cold assembly device for the textile machinery trough shaft according to claim 2, characterized in that, The drive control mechanism includes a drive control motor, a transmission component, and a drive control shaft. The drive control motor is fixed on the cooling rack and located on one side of the cooling cylinder. The drive control shaft passes through the cooling cylinder and is rotatably mounted on the cooling cylinder. One end of the drive control shaft is connected to the output end of the drive control motor through the transmission component. The other end of the drive control shaft is axially provided with a threaded groove that intermittently cooperates with the support mechanism.

4. The liquid nitrogen cold assembly device for textile machinery trough shaft according to claim 3, characterized in that, The support mechanism includes a guide rail, a T-shaped slider, a screw assembly, a support plate, and Y-shaped supports. The guide rail is arranged along the axis of the cooling cylinder and fixed to its inner wall. A T-shaped slider is slidably mounted on the guide rail. A screw assembly is installed inside the T-shaped slider. The screw assembly is intermittently engaged with the threaded groove. A support plate is fixed to the top of the T-shaped slider. The support plate is located between two S-shaped baffles, and several Y-shaped supports for supporting the shaft of the textile machine trough are slidably mounted on the support plate.

5. The liquid nitrogen cold assembly device for the textile machinery trough shaft according to claim 4, characterized in that, The screw-in assembly includes a sliding column, a screw sleeve, a screw spring, a magnetic attractor one, and a magnetic attractor two. The sliding column is symmetrically slidably installed on both sides of the T-shaped slider. One end of the sliding column is fixed with a screw sleeve that mates with the threaded groove. A screw spring is installed between the screw sleeve and the inner wall of the T-shaped slider. Magnetic attractor one is fixed on the outer wall of the screw sleeve, and magnetic attractor two is fixed on the inner wall of the T-shaped slider. The installation positions and installation directions of magnetic attractor one and magnetic attractor two are mutually corresponding, and magnetic attractor one and magnetic attractor two repel each other when energized.

6. The liquid nitrogen cold assembly device for textile machinery grooved shafts according to claim 5, characterized in that, The threaded sleeve adopts a semi-circular cylindrical structure, and the inner wall of the cylindrical structure is spirally provided with threaded teeth that cooperate with the threaded groove.

7. The liquid nitrogen cold assembly device for textile machinery trough shafts according to claim 1, characterized in that, The side sealing assembly includes a telescopic cylinder, a connecting plate, and a sealing plate. The telescopic cylinder is perpendicular to the axis of the cooling cylinder and is symmetrically fixed on its upper and lower outer walls. A connecting plate is fixed on the output end of each of the two telescopic cylinders. A sealing plate for sealing the opening structure on the upper part of the cooling cylinder is fixed on each of the two connecting plates. The two sealing plates are symmetrically distributed at the upper and lower ends of the cooling cylinder.

8. The liquid nitrogen cold assembly device for textile machinery trough shaft according to claim 7, characterized in that, A conical guide shroud is fixed to one end of the inner wall of the cooling cylinder near the air inlet pipe. The conical guide shroud is located below the air inlet pipe, with its large end facing the air inlet pipe and its small end facing the inside of the cooling cylinder. The outer wall of the conical guide shroud is equidistantly distributed with guide ribs for guiding the flow of low-temperature nitrogen gas, and the inner wall of the conical guide shroud is fixed with reinforcing ribs.

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