Pay-off device of yarn covering machine

Abstract

The invention relates to a pay-off device of a yarn covering machine, and belongs to the technical field of pay-off devices. The device comprises a rack, two driving rollers, a plurality of pay-off barrels, detection assemblies and a jacking driving part, the two driving rollers which are horizontally arranged and kept parallel are installed on the rack, the pay-off barrels are placed on the driving rollers, and the multiple sets of detection assemblies are installed on the rack and arranged on the sides, used for paying off yarn, of the pay-off barrels correspondingly; the detection assembly comprises a swing rod and a sensor, the swing rod is rotationally installed on the rack and keeps inclined, a penetrating hole is formed in the end, close to the pay-off barrels, of the swing rod, the sensor is installed on the rack and used for detecting the distance between the sensor and the swing rod, and the multiple jacking driving pieces are installed on the rack and arranged below the pay-off barrels correspondingly. And the jacking driving pieces are in control connection with the corresponding sensors. According to the invention, an operator can timely identify the broken pay-off barrel when the pay-off barrel has a broken line problem, so that adjustment is carried out in time, and the defective rate is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of wire paying - off devices, and particularly to a wire paying - off device for a yarn covering machine. Background Art

[0002] A yarn covering machine is a textile machine specifically used to wrap one or more yarns around a core yarn to form a composite yarn with specific properties. A yarn covering machine generally includes a wire paying - off device, a covering mechanism, and a winding device. Among them, the wire paying - off device is one of the core components of the equipment, responsible for stably and continuously releasing the core yarn and the outer yarn. The wire paying - off device of the existing covering machine usually includes a wire paying - off cylinder and two driving rollers. The wire paying - off cylinder is placed on the two driving rollers, and when the two driving rollers rotate, they drive the wire paying - off cylinder to rotate, thereby paying off the yarn on the wire paying - off cylinder.

[0003] For example, a wire paying - off device for covering machine wires disclosed in the patent with the authorization announcement number CN108861807B includes a frame. On the frame, a first rotating roller and a second rotating roller are arranged in parallel. There is a driving mechanism on the frame that can drive the second rotating roller to rotate. There is a spacing between the first rotating roller and the second rotating roller. There is an adjusting mechanism on the frame that can adjust the spacing between the first rotating roller and the second rotating roller. Above the first rotating roller and the second rotating roller, a plurality of wire paying - off sleeves are placed.

[0004] This device can control the wire paying - off rate. However, during use, the amount of yarn wound on the wire paying - off sleeve is large and the yarn is relatively thin. Inevitably, there are some areas with relatively weak strength in the yarn. At the same time, since the yarn is in a tensioned state during the wire paying - off process, when the area with relatively weak strength in the yarn is paid off, the yarn may be broken. If the breakage of the yarn is not discovered by the worker in time and the corresponding equipment continues to run without timely shutdown, a large number of defective yarns will be produced, affecting the overall quality of the produced covered yarn. Summary of the Invention

[0005] The present invention provides a wire paying - off device for a yarn covering machine to solve the technical problem that when the wire paying - off device of the existing yarn covering machine has a wire breakage problem, it cannot be adjusted in time, resulting in a large number of defective yarns and poor overall quality of the finished covered yarn.

[0006] To solve the above problems, the wire paying - off device for a yarn covering machine provided by the present invention adopts the following technical solutions: A wire paying - off device for a yarn covering machine, comprising: A frame, on which two horizontally arranged and parallel driving rollers are installed; A plurality of wire paying - off cylinders, which are placed above the two driving rollers with their axes parallel to the axes of the driving rollers and are arranged at intervals along the axis direction of the driving rollers, and can rotate under the drive of the driving rollers to pay off the yarn; It further includes: A detection assembly is provided with multiple groups, all of which are installed on the frame and are respectively arranged on the side of each pay-off drum for releasing the yarn. The detection assembly includes a swing rod and a sensor. The swing rod is rotatably installed on the frame around a rotation axis parallel to the axis of the pay-off drum. The swing rod is kept tilted. An end of the swing rod close to the pay-off drum is provided with a through hole for the yarn to pass through from bottom to top. The sensor is installed on the frame and is located on the side of the swing rod rotation axis facing away from the pay-off drum. The sensor is used to detect the distance between the swing rod and the sensor. The end of the swing rod close to the pay-off drum can be driven by the moving yarn to swing upward, thereby driving the end of the swing rod facing away from the pay-off drum to swing downward and staggered with the sensor. There are multiple lifting drive parts, all of which are installed on the frame and are respectively arranged under each wire-paying drum. The lifting drive parts are controlled and connected with the corresponding sensors to receive the signals of the sensors so as to lift the corresponding wire-paying drum when the sensors detect that the distance is a set value.

[0007] By adopting the above technical solution, when the yarn is paid out normally, the yarn moves rapidly from bottom to top through the perforations on the rocker arm, and the end of the rocker arm with the perforations is driven to swing upward by friction, so that the end of the rocker arm facing away from the pay-off drum swings downward. When the end of the rocker arm facing away from the pay-off drum swings downward, the positions of the rocker arm and the sensor are staggered, and the sensor cannot detect the distance from the rocker arm. At this time, the lifting drive does not respond, and the pay-off drum pays out the wire normally. When a wire breakage problem occurs, the yarn can no longer move quickly from bottom to top through the perforation. At this time, the end of the rocker arm with the perforation swings downward under the action of its own weight, and the end of the rocker arm facing away from the pay-off reel swings upward, thereby swinging to a position relative to the sensor. At this time, the sensor can detect that the distance between the sensor and the rocker arm is the set value, and the lifting drive component responds at this time and pushes the corresponding pay-off reel with a wire breakage problem to move upward, so that the operator can quickly identify which specific pay-off reel in the entire row has a wire breakage problem, so as to quickly trim the pay-off reel at that location, pull the yarn out again and assemble it on the equipment to continue wrapping. By setting up a detection component to detect the pay-off state of the pay-off reel, when the yarn breaks, the lifting drive component will push out the pay-off reel with the problem, so that the operator can observe it. The operator can timely identify the pay-off reel with the breakage problem by observing the height state of the pay-off reel, and thus respond in time to repair the pay-off reel with the problem, which can shorten the idling time of the pay-off reel with the breakage problem, reduce the amount of defective yarn generated, and make the finished covered wire have better quality.

[0008] Furthermore, the pay-off drum is elastically pressed against the driving roller in the up-down direction.

[0009] By adopting the above technical solution, the pay-off drum is elastically pressed against the driving roller, which can prevent the pay-off drum from jumping relative to the driving roller in the later stage of pay-off and causing unstable pay-off.

[0010] Further, a plurality of movable rods capable of moving up and down are installed on the frame. An elastic member I is connected between the movable rods and the frame. Each wire pay-off reel is respectively connected to each movable rod. The elastic member I applies a downward elastic force to the movable rods, causing the movable rods to drive the wire pay-off reels to press tightly on the driving rollers. The jacking driving member jacks up the wire pay-off reels by pushing the movable rods upward.

[0011] Further, a rotatable connecting cylinder is vertically connected to the top of the movable rod. A plurality of tensioning blocks are elastically and movably connected to the side wall of the connecting cylinder along the radial direction of the connecting cylinder. An arc-shaped pushing surface with an axis perpendicular to the axis of the connecting cylinder is provided at one end of the tensioning block facing away from the connecting cylinder. The wire pay-off reel is sleeved outside the connecting cylinder, and the tensioning blocks are elastically pressed on the wire pay-off reel.

[0012] Adopting the above technical solution, by inserting the connecting cylinder into the inner cavity of the wire pay-off reel, the tensioning blocks are automatically elastically pressed on the inner side wall of the wire pay-off reel, thereby tightening the wire pay-off reel and realizing the relative fixation between the wire pay-off reel and the connecting cylinder. The connection method between the wire pay-off reel and the connecting cylinder is simpler, which is convenient for replacing a new wire pay-off reel after the wire on the wire pay-off reel is used up.

[0013] Further, both driving rollers are slidably installed on the frame in the horizontal direction, and an adjusting mechanism for adjusting the distance between the two driving rollers is provided on the frame.

[0014] Adopting the above technical solution, the distance between the two driving rollers is adjustable, allowing the equipment to adapt to wire pay-off reels of different diameters. For wire pay-off reels of different diameter sizes, there is no need to replace the driving roller assembly, reducing the equipment transformation cost and improving the versatility of the equipment.

[0015] Further, the adjusting mechanism includes a push rod, two connecting rods and an adjusting driving member. The push rod extends vertically and is movably installed on the frame up and down. The two connecting rods are symmetrically arranged. The bottom ends of the two connecting rods are respectively hinged to the top of the push rod. The top ends of the two connecting rods are respectively hinged to the two driving rollers. The push rod is driven by the adjusting driving member to move up and down, thereby driving the top ends of the two connecting rods to approach or move away from each other to adjust the distance between the two driving rollers.

[0016] Adopting the above technical solution, by driving the push rod to move in the up and down direction, the angle between the two connecting rods can be changed, thereby adjusting the distance between the two driving rollers. The structure is simple and the adjustment method is convenient.

[0017] Further, the adjusting driving member includes an adjusting screw rod, an adjusting handwheel and a connecting member. The adjusting screw rod extends vertically and is rotatably installed on the frame. The adjusting handwheel is fixedly connected to the top end of the adjusting screw rod. The connecting member is slidably installed on the frame along the up and down direction. The connecting member is spirally sleeved outside the adjusting screw rod and is connected to the push rod. When the adjusting handwheel is rotated, the adjusting screw rod can be driven to rotate, thereby driving the push rod to move up and down through the connecting member.

[0018] With the above technical solution, by rotating the adjusting handwheel, the adjusting screw can be driven to rotate, thereby driving the connecting piece to move in the up and down direction. The connecting piece drives the push rod to move in the up and down direction, realizing the adjustment of the distance between the two driving rods. The adjustment method is simple, and the spiral transmission between the connecting piece and the adjusting screw can achieve self-locking by reasonably setting the spiral angle and the friction coefficient. After adjusting the height of the connecting piece, there is no need to separately set a locking structure to lock its position, making the overall structure simpler.

[0019] Furthermore, a rotary driving mechanism is provided on the frame. The rotary driving mechanism includes a driving motor, a first helical gear, and two second helical gears. The spiral angle of the first helical gear is 45 degrees, the spiral angle of the second helical gear is 45 degrees and its helix direction is the same as that of the first helical gear. The tooth width dimension of the first helical gear is greater than the distance dimension between the two driving rollers. The two second helical gears are respectively coaxially and non-rotatably connected to the two driving rollers, and both second helical gears are engaged with the first helical gear. The driving motor is used to drive the first helical gear to rotate, thereby driving the second helical gears to rotate.

[0020] With the above technical solution, the rotary driving mechanism adopts a first helical gear and second helical gears with a spiral angle of 45 degrees and the same helix direction. When the first helical gear rotates, it can drive the two second helical gears to rotate, thereby driving the two driving rollers to rotate. At the same time, the two second helical gears can move along the axis direction of the first helical gear on the first helical gear. Such a driving structure can adjust the distance between the two driving rollers without affecting the stable transmission, and the structure is ingenious.

[0021] Furthermore, a lubricating oil storage cavity and a lubricating oil supply assembly are provided on the frame. The lubricating oil supply assembly includes a lubricating oil temporary storage tank, a piston push rod, and an oil outlet pipe. A communication hole is provided on the top side wall of the lubricating oil temporary storage tank. The lubricating oil temporary storage tank is connected to the bottom of the lubricating oil storage cavity and is communicated with the lubricating oil storage cavity through the communication hole. The piston push rod is inserted into the lubricating oil temporary storage tank. An oil outlet pipe is also connected to the bottom of the lubricating oil temporary storage tank. The outlet end of the oil outlet pipe is located above the first helical gear. When the piston push rod moves upward, the lubricating oil in the lubricating oil storage cavity flows into the lubricating oil temporary storage tank under its own weight through the communication hole. When the piston rod moves downward, it can squeeze out the lubricating oil between the piston rod and the inner side wall of the bottom of the lubricating oil temporary storage tank and make the lubricating oil flow out through the oil outlet pipe.

[0022] With the above technical solution, by lifting the piston push rod upward, the lubricating oil in the lubricating oil storage cavity can flow into the lubricating oil temporary storage tank through the communication hole. Then, by moving the piston push rod downward, the lubricating oil can be squeezed out, so that the lubricating oil drips on the helical gear to lubricate the helical gear. By adopting the above structure, the quantitative extrusion of the lubricating oil can be realized, and an appropriate amount of lubricating oil is extruded each time, which can better lubricate the gears.

[0023] Furthermore, fixed rods are provided at the ends of the two driving rollers. The oil outlet pipe is a flexible hose, and the two oil outlet pipes are respectively fixed on the two fixed rods. The outlet ends of the two oil outlet pipes are respectively located above the two second helical gears.

[0024] With the above technical solution, the lubricating oil can directly drip onto the second helical gear and then flow along the tooth grooves of the second helical gear to the first helical gear, so that both the first helical gear and the second helical gear can be covered with lubricating oil, and the lubricating effect is better.

[0025] The beneficial effects of the unwinding device of the yarn covering machine provided by the present invention are as follows: The lifting driving member can respond in time when a wire break problem occurs in the unwinding cylinder, so as to lift the unwinding cylinder with the wire break problem upward, which is convenient for the operator to quickly identify the problematic unwinding cylinder among multiple unwinding cylinders and adjust it in time, thereby reducing the defective rate caused by wire breakage. The adjusting mechanism can adjust the distance between the two driving rollers, so that the driving rollers can support unwinding cylinders with different diameters, improving the versatility of the equipment. Description of the Drawings

[0026] Figure 1 It is a schematic three-dimensional structure diagram of the unwinding device of the yarn covering machine provided by the present invention; Figure 2 is Figure 1 the enlarged structure diagram at A in Figure 3 It is a front view of the unwinding device of the yarn covering machine provided by the present invention; Figure 4 It is a top view of the unwinding device of the yarn covering machine provided by the present invention; Figure 5 is Figure 4 the enlarged structure diagram at B in Figure 6 It is a left view of the unwinding device of the yarn covering machine provided by the present invention; Figure 7 It is a cross-sectional view of the unwinding cylinder in the unwinding device of the yarn covering machine provided by the present invention; Figure 8 It is a cross-sectional view of the rotary driving mechanism in the unwinding device of the yarn covering machine provided by the present invention; Figure 9 is Figure 8 the enlarged structure diagram at Figure 10 It is a schematic three-dimensional structure diagram of the adjusting driving member in the unwinding device of the yarn covering machine provided by the present invention; Figure 11 It is a cross-sectional view of the adjusting driving member in the unwinding device of the yarn covering machine provided by the present invention; Figure 12 A cross-sectional view of the lubricating oil supply component in the yarn unwinding device provided by the present invention.

[0027] Explanation of reference numerals: 1. Frame; 101. Partition board; 102. Support plate; 103. Vertical plate; 104. Limit post; 105. Lubricating oil storage cavity; 2. Yarn unwinding cylinder; 3. Driving roller; 4. Movable rod; 5. Swing rod; 501. Perforation; 6. Sensor; 7. Jacking driving member; 8. First elastic member; 9. Fixed shaft; 10. Tensioning block; 11. Second elastic member; 12. Connecting cylinder; 13. Push rod; 14. Driving motor; 15. First helical gear; 16. Second helical gear; 17. Adjusting handwheel; 18. Connecting member; 181. Connecting plate section; 182. Square frame section; 19. Adjusting screw; 20. Connecting rod; 21. Guide rod; 22. Fixed rod; 23. Lubricating oil temporary storage tank; 231. Communication hole; 24. Piston push rod; 241. Rod section; 242. Piston section; 25. Oil outlet pipe; 26. Sliding block; 27. Support block; 28. Third elastic member. Detailed implementation manners

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Those skilled in the art should know that the following described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.

[0029] The following is one of the embodiments of the yarn unwinding device of the yarn wrapping machine provided by the present invention: As Figures 1-12 shown, a yarn unwinding device of a yarn wrapping machine includes a frame 1, a driving roller 3, a yarn unwinding cylinder 2, a detection component, a jacking driving member 7, an adjusting mechanism, a rotation driving member, and a lubricating oil supply component.

[0030] As Figure 1 、 Figure 3 、 Figure 4 、 Figure 6 shown, the frame 1 is arranged on the horizontal ground. A horizontally arranged partition board 101 is provided at the bottom of the frame 1. The partition board 101 divides an upper space and a lower space on the frame 1. A horizontally arranged support plate 102 is provided in the upper space. Multiple vertical plates 103 evenly distributed at equal intervals in the left-right direction are vertically connected to the top of the support plate 102. A limit post 104 is vertically connected to the right side wall of the vertical plate 103. As Figure 9 、 Figure 12 shown, a lubricating oil storage cavity 105 is also provided at the top on the right side of the frame 1.

[0031] There are two driving rollers 3, both of which extend in the left - right direction and are arranged at intervals in the front - back direction. The driving rollers 3 are located on the front side of the support plate 102. At both the left and right ends of each driving roller 3, there is a sliding block 26. The sliding blocks 26 are slidably mounted on the frame 1 in the front - back direction, and the driving rollers 3 are rotatably mounted on the two sliding blocks 26.

[0032] There are multiple pay - off spools 2, and their axes are placed parallel to the axis of the driving rollers 3 on the two driving rollers 3. The multiple pay - off spools 2 are arranged at equal intervals along the axis direction of the driving rollers 3.

[0033] The pay - off spools 2 are elastically pressed on the two driving rollers 3. As Figure 3 shown, the specific elastic pressing method is as follows: A vertically extending movable rod 4 is provided at the right end of the pay - off spool 2. The movable rod 4 is vertically movably mounted on the frame 1. An elastic member I 8 is connected between the movable rod 4 and the frame 1. The elastic member I 8 is a compression spring that can be telescoped in the up - down direction. The elastic member I 8 exerts a downward elastic force on the movable rod 4, causing the movable rod 4 to drive the pay - off spool 2 to be pressed on the two driving rollers 3.

[0034] As Figure 7 shown, the specific connection method between the pay - off spool 2 and the movable rod 4 is as follows: A fixed shaft 9 is vertically and fixedly connected to the top of the movable rod 4. A connecting cylinder 12 is rotatably sleeved on the outside of the fixed shaft 9. A plurality of sliding grooves extending radially along the connecting cylinder 12 are provided on the outer side wall of the connecting cylinder 12. A tensioning block 10 is slidably mounted in the sliding groove. An elastic member II 11 is connected between the tensioning block 10 and the bottom surface of the sliding groove. The elastic member II 11 is a compression spring. One end of the tensioning block 10 facing away from the connecting cylinder 12 is provided with an arc - shaped pushing surface with an arc - shaped opening facing the connecting cylinder 12 and an axis perpendicular to the axis of the connecting cylinder 12. The pay - off spool 2 is sleeved on the outside of the connecting cylinder 12, and the tensioning block 10 is pressed against the inner side wall of the pay - off spool 2 under the action of the elastic member II 11, thereby realizing the relative fixation between the connecting cylinder 12 and the pay - off spool 2.

[0035] As Figure 1 、 Figure 4 and Figure 5 shown, there are multiple groups of detection components, which are respectively installed on the above - mentioned multiple vertical plates 103. The detection component includes a swing rod 5 and a sensor 6.

[0036] The swing rod 5 is rotatably mounted on the vertical plate 103, and the rotation axis of the swing rod 5 is parallel to the axis of the driving roller 3. The front end of the swing rod 5 is heavier than the rear end of the swing rod 5. The rear end of the swing rod 5 is blocked by the limit post 104. Therefore, the swing rod 5 is in an inclined state with the front end lower than the rear end under the action of its own weight. A through - hole 501 is also provided at the front end of the swing rod 5, and the yarn on the pay - off spool 2 can pass through the through - hole 501 from bottom to top.

[0037] The sensor 6 is an infrared distance sensor 6, which is installed on the left side of the vertical plate 103, and is opposite to the rear end of the swing rod 5 when the front end is naturally drooping. When the front end of the swing rod 5 is naturally drooping, the sensor 6 can detect the distance from the rear end of the swing rod 5, and the distance is a constant value. When the front end of the swing rod 5 is driven by the yarn released at a high speed and swings upward, the rear end of the swing rod 5 swings downward and staggers with the sensor 6, and the value detected by the sensor 6 changes.

[0038] There are multiple lifting drive members 7, all of which are installed on the frame 1 and located in the lower space below the partition 101. The multiple lifting drive members 7 are respectively opposite to the multiple movable rods 4. The lifting drive member 7 is a lifting cylinder, which is controlled and connected with the sensor 6. The lifting drive member 7 is used to respond to the detection result of the sensor 6. When the distance detected by the sensor 6 is a set value, the output end of the lifting drive member 7 is controlled to rise upward, thereby lifting the corresponding movable rod 4 upward, so that the corresponding pay-off drum 2 rises upward.

[0039] like Figure 3 , Figure 10 As shown, the adjustment mechanism includes a push rod 13, a connecting rod 20 and an adjustment drive member. Two push rods 13 are provided. Both push rods 13 extend vertically and are slidably installed on the frame 1 along the up and down directions. The two push rods 13 are respectively arranged on the left and right sides of the driving roller 3.

[0040] There are four connecting rods 20 in total. The top end of each push rod 13 is connected to two connecting rods 20 that are symmetrically arranged front and back. The bottom ends of the two connecting rods are hinged to the push rod 13 around a rotation axis extending left and right, and the top ends of the connecting rods 20 are respectively hinged to the ends of the two driving rollers 3 around a rotation axis extending left and right.

[0041] like Figure 3 , Figure 11 As shown, the adjusting drive member includes an adjusting screw 19, an adjusting hand wheel 17 and a connecting member 18. The adjusting screw 19 extends vertically and is rotatably mounted on the frame 1. The adjusting screw 19 is located in the lower space on the frame 1, and the adjusting hand wheel 17 is fixedly connected to the top of the adjusting screw 19. The connecting member 18 is guided and slidably mounted on the frame 1 along the up and down directions, and is spirally sleeved on the adjusting screw 19. The connecting member 18 includes a plurality of connecting plate segments 181 and a plurality of square frame segments 182. The connecting plate segments 181 and the square frame segments 182 are alternately arranged in sequence. The connecting member 18 is sleeved on the outside of the plurality of lifting drive members 7 at intervals through the plurality of square frame segments 182. The left and right ends of the connecting member 18 are respectively connected to the two push rods 13. By rotating the adjusting hand wheel 17, the adjusting screw 19 can be driven to rotate, and the adjusting screw 19 drives the connecting piece 18 to move up and down through the spiral transmission, thereby driving the two push rods 13 to move up and down. When the push rods 13 move in the up and down directions, the two driving rollers 3 can be driven to move closer to or away from each other through the two connecting rods 20.

[0042] As shown Figure 10 in the figure, the rotation driving member includes a driving motor 14, a first helical gear 15 and a second helical gear 16. The driving motor 14 is fixedly installed on the frame 1. The axis of the first helical gear 15 extends in the front-rear direction and is rotatably installed on the frame 1 around its own axis. The helix angle of the first helical gear 15 is 45 degrees, and the tooth width dimension of the first helical gear 15 is greater than the spacing dimension between the two driving rollers 3. There are two second helical gears 16, and the two second helical gears 16 are respectively coaxially and non-rotatably connected to the ends of the two driving rollers 3. The helix angle of the second helical gear 16 is 45 degrees, and the helix direction of the second helical gear 16 is the same as that of the first helical gear 15. The two second helical gears 16 are both meshed with the first helical gear 15. The first helical gear 15 can be driven by the driving motor 14 to rotate. When the first helical gear 15 rotates, it can drive the two second helical gears 16 to rotate, thereby driving the two driving rollers 3 to rotate. At the same time, when the first helical gear 15 is fixed, a force in the front-rear direction is applied to the second helical gear 16, and the second helical gear 16 can roll on the first helical gear 15 in the front-rear direction.

[0043] The transmission structure between the first helical gear 15 and the second helical gear 16 is a prior art, and no detailed description will be given here.

[0044] A support block 27 is further connected to the end of the above-mentioned driving roller 3. The support block 27 is slidably sleeved on a guide rod 21 extending in the front-rear direction and fixed on the frame 1. A fixing rod 22 extending in the left-right direction is further connected to the support block 27, and the fixing rod 22 is located above the second helical gear 16 on the corresponding side.

[0045] As shown Figure 8 in Figure 9 Figures Figure 12 ..., the lubricating oil supply assembly includes a lubricating oil storage tank 23, a piston push rod 24 and two oil outlet pipes 25. The lubricating oil storage tank 23 is installed on the frame 1. The top of the lubricating oil storage tank 23 extends into the lubricating oil storage cavity 105. A communication hole 231 is opened on the part of the lubricating oil storage tank 23 extending into the lubricating oil storage cavity 105. The piston push rod 24 is inserted into the lubricating oil storage tank 23. The piston push rod 24 includes a rod section 241 and a piston section 242 connected to the bottom end of the rod section 241. An elastic member three 28 is connected between the piston section 242 and the top surface of the tank of the lubricating oil storage tank 23. The elastic member three 28 applies a downward elastic force to the piston section 242. The two oil outlet pipes 25 are both connected to the bottom end of the lubricating oil storage tank 23 and communicate with the inner cavity of the lubricating oil storage tank 23. The two oil outlet pipes 25 are both flexible hoses, and the outlet ends of the two oil outlet pipes 25 are respectively tied to the two fixing rods 22 through cable ties.

[0046] By lifting the piston push rod 24 upward, the lubricating oil in the lubricating oil storage cavity 105 can flow into the space between the piston section 242 and the bottom surface of the lubricating oil temporary storage tank 23 through the communication hole 231. Then, the piston push rod 24 is released, and the piston section 242 moves downward under the action of the third elastic member 28, squeezing the lubricating oil between the piston section 242 and the bottom surface of the lubricating oil temporary storage tank 23 into the oil outlet pipe 25, and discharging the lubricating oil from the outlet end of the oil outlet pipe 25.

[0047] When the present invention is in use, the operator can first adjust the distance between the two driving rollers 3 according to the outer diameter dimension of the pay-off reel 2 used. During the adjustment, the height of the push rod 13 is adjusted by rotating the adjusting handwheel 17. The push rod 13 drives the two driving rollers 3 to approach or move away from each other through the connecting rod 20, and the two driving rollers 3 are adjusted to a suitable state.

[0048] After the distance between the driving rollers 3 is adjusted, the pay-off reel 2 is placed on the two driving rollers 3, and the end of the yarn on the pay-off reel 2 passes through the perforation 501 on the corresponding swing rod 5 from bottom to top and is connected to the subsequent processing equipment. The driving motor 14 is started, and the driving motor 14 drives the two driving rollers 3 to rotate through the first bevel gear 15 and the second bevel gear 16. The two driving rollers 3 drive the pay-off reel 2 to rotate, assisting the pay-off reel 2 to pay out the yarn. When the yarn is paid out normally, the yarn quickly passes through the perforation 501 on the swing rod 5 from bottom to top. The front end of the swing rod 5 is driven by the quickly moving yarn to swing upward, and the rear end of the swing rod 5 swings downward correspondingly, so as to be staggered from the sensor 6. The sensor 6 cannot detect the distance from the rear end of the swing rod 5, and the detected distance value is inconsistent with the set value. At this time, the lifting driving member 7 has no response.

[0049] When there is a problem of broken yarn during the pay-out, no yarn can quickly pass through the perforation 501 on the swing rod 5. The front end of the swing rod 5 droops downward under its own weight, and the rear end of the swing rod 5 swings upward, so as to swing to be opposite to the sensor 6 left and right. At this time, the sensor 6 can detect the distance from the swing rod 5, and the detected distance is the set value. At this time, the lifting driving member 7 responds to the detection result of the sensor 6, pushes the movable rod 4 upward, and the movable rod 4 drives the corresponding pay-off reel 2 to move upward. The operator observes that the height of a pay-off reel 2 changes, indicating that there is a broken yarn fault at this pay-off reel 2. The operator can react in time, temporarily stop the equipment, and re-connect the pay-off reel 2 at this place to ensure the normal operation of the pay-off device.

[0050] After the device has been used for a period of time, the transmission structure needs to be lubricated. At this time, the piston push rod 24 can be lifted up first, and then the piston push rod 24 can be loosened. When loosened, the piston section 242 moves downward under the action of the elastic member three 28 to squeeze out the lubricating oil. The squeezed lubricating oil drips from the outlet ends of the two oil outlet pipes 25 onto the two bevel gears two 16, and flows from the tooth grooves of the bevel gear two 16 to the bevel gear one 15, thereby achieving lubrication of each bevel gear.

[0051] The present invention can enable the operator to promptly discover when the wire breakage problem occurs in the wire reel 2, and the operator can promptly adjust the wire reel 2 with the problem, thereby reducing the defective rate generated during the processing. The present invention can also adjust the spacing between two driving rollers 3 used to drive the wire reel 2 to rotate, so that it can be suitable for wire reels 2 of different sizes, and has stronger versatility.

[0052] In this embodiment, the pay-off reel 2 is elastically pressed against the driving roller 3 by an elastic member 8. In other embodiments, the pay-off reel 2 is directly placed on the driving roller 3, and the pay-off reel 2 is not subjected to elastic pressing force.

[0053] In this embodiment, the rotary drive mechanism includes a drive motor 14, a bevel gear 15 and two bevel gears 2 16. The drive motor 14 drives the bevel gear 15 to drive the bevel gear 2 16 to rotate, thereby driving the two drive rollers 3 to rotate. The two bevel gears 2 16 can roll on the bevel gear 15 without affecting the adjustment of the spacing between the two drive rollers 3. In other embodiments, the rotary drive mechanism includes two drive motors 14. The two drive motors 14 are both slidably installed on the frame 1 along the front and rear directions, and the two drive motors 14 are respectively connected to the two drive rollers 3 to drive the two drive rollers 3 to rotate. Such a structure will also not affect the adjustment of the spacing between the two drive rollers 3.

Claims

1. A pay-off device for a yarn covering machine, comprising: A frame, on which two horizontally arranged and parallel driving rollers are mounted; A plurality of pay-off drums, whose axes are parallel to the axes of the driving rollers, are placed above the two driving rollers and are arranged at intervals along the axes of the driving rollers, and can rotate under the drive of the driving rollers to pay out the yarn; It is characterized by further comprising: A detection assembly is provided with multiple groups, all of which are installed on the frame and are respectively arranged on the side of each pay-off drum for releasing the yarn. The detection assembly includes a swing rod and a sensor. The swing rod is rotatably installed on the frame around a rotation axis parallel to the axis of the pay-off drum. The swing rod is kept tilted. An end of the swing rod close to the pay-off drum is provided with a through hole for the yarn to pass through from bottom to top. The sensor is installed on the frame and is located on the side of the swing rod rotation axis facing away from the pay-off drum. The sensor is used to detect the distance between the swing rod and the sensor. The end of the swing rod close to the pay-off drum can be driven by the moving yarn to swing upward, thereby driving the end of the swing rod facing away from the pay-off drum to swing downward and staggered with the sensor. There are multiple lifting drive parts, all of which are installed on the frame and are respectively arranged under each wire-paying drum. The lifting drive parts are controlled and connected with the corresponding sensors to receive the signals of the sensors so as to lift the corresponding wire-paying drum when the sensors detect that the distance is a set value.

2. The unwinding device of a yarn covering machine according to claim 1, characterized in that, The pay-off drum is elastically pressed against the driving roller in the up-down direction.

3. The unwinding device of a yarn covering machine according to claim 2, characterized in that, A plurality of movable rods that can move up and down are installed on the frame, an elastic member is connected between the movable rod and the frame, and each pay-off drum is connected to each movable rod respectively. The elastic member applies a downward elastic force to the movable rod, so that the movable rod drives the pay-off drum to be pressed against the driving roller, and the lifting driving member lifts the pay-off drum by pushing the movable rod upward.

4. The unwinding device of a yarn covering machine according to claim 3, characterized in that, The top of the movable rod is vertically connected to a rotatable connecting cylinder, and a plurality of tensioning blocks are elastically and movably connected to the side wall of the connecting cylinder along the radial direction of the connecting cylinder. An arc-shaped pushing surface with an axis perpendicular to the axis of the connecting cylinder is provided at the end of the tensioning block facing away from the connecting cylinder. The pay-off cylinder is sleeved on the outside of the connecting cylinder, and the tensioning block is elastically pressed on the pay-off cylinder.

5. The unwinding device of a yarn covering machine according to any one of claims 1-4, characterized in that, The two driving rollers are both slidably mounted on the frame in the horizontal direction, and an adjusting mechanism for adjusting the distance between the two driving rollers is provided on the frame.

6. The unwinding device of a yarn covering machine according to claim 5, characterized in that, The adjusting mechanism includes a push rod, two connecting rods and an adjusting driving member. The push rod extends vertically and is movably installed on the frame up and down. The two connecting rods are symmetrically arranged. The bottom ends of the two connecting rods are hinged to the top of the push rod. The top ends of the two connecting rods are respectively hinged to the two driving rollers. The push rod is driven by the adjusting driving member to move up and down, thereby driving the top ends of the two connecting rods to move closer to or away from each other to adjust the distance between the two driving rollers.

7. The unwinding device of a yarn covering machine according to claim 6, characterized in that, The adjusting drive component includes an adjusting screw, an adjusting handwheel and a connecting component. The adjusting screw extends vertically and is rotatably installed on the frame. The adjusting handwheel is fixedly connected to the top of the adjusting screw. The connecting component is guided and slidably installed on the frame along the up and down directions. The connecting component is spirally sleeved on the outside of the adjusting screw and connected to the push rod. When the adjusting handwheel is turned, the adjusting screw can be driven to rotate, thereby driving the push rod to move up and down through the connecting component.

8. The unwinding device of a yarn covering machine according to claim 5, characterized in that, The frame is provided with a rotary drive mechanism. The rotary drive mechanism includes a drive motor, a first helical gear, and two second helical gears. The helix angle of the first helical gear is 45 degrees, the helix angle of the second helical gear is 45 degrees and the helix direction is the same as that of the first helical gear. The tooth width dimension of the first helical gear is greater than the spacing dimension between the two drive rollers. The two second helical gears are respectively coaxially and non-rotatably connected to the two drive rollers. The two second helical gears are both meshed with the first helical gear. The drive motor is used to drive the first helical gear to rotate, thereby driving the second helical gears to rotate.

9. The unwinding device of a yarn covering machine according to claim 8, characterized in that, The frame is provided with a lubricating oil storage cavity and a lubricating oil supply assembly. The lubricating oil supply assembly includes a lubricating oil temporary storage tank, a piston push rod, and an oil outlet pipe. A communication hole is provided on the top side wall of the lubricating oil temporary storage tank. The lubricating oil temporary storage tank is connected to the bottom of the lubricating oil storage cavity and is communicated with the lubricating oil storage cavity through the communication hole. The piston push rod is inserted into the lubricating oil temporary storage tank. An oil outlet pipe is also connected to the bottom of the lubricating oil temporary storage tank. The outlet end of the oil outlet pipe is located above the first helical gear. When the piston push rod moves upward, the lubricating oil in the lubricating oil storage cavity flows into the lubricating oil temporary storage tank through the communication hole under its own weight. When the piston rod moves downward, the lubricating oil between the piston rod and the inner bottom side wall of the lubricating oil temporary storage tank can be extruded and the lubricating oil flows out through the oil outlet pipe.

10. The unwinding device of a yarn covering machine according to claim 9, characterized in that, Fixed rods are provided at the ends of the two drive rollers. The oil outlet pipes are flexible hoses. The two oil outlet pipes are respectively fixed on the two fixed rods. The outlet ends of the two oil outlet pipes are respectively located above the two second helical gears.

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