Full-automatic yarn clearing machine for yarn bobbin

Abstract

The yarn drum tail yarn full-automatic removing machine comprises a tail yarn removing unit with a guide roller frame, a blocking rod, a hot spray gun and a yarn suction pipe and an automatic feeding unit with a feeding box, a guide plate, a lifting mechanism, a distributing rod and a pressing plate. The guide roller frame is provided with an inclined roller way. The blocking rod is arranged on the roller way in a lifting mode. The hot spray gun is arranged above the cutting area in a left-right movable mode. The yarn suction pipe is arranged between the roller ways and corresponds to the cutting area. The hot air flow of the hot spray gun can be used to melt the tail yarn. When the thickness of the tail yarn is large, the yarn suction pipe can be used to suck the broken end of the residual tail yarn, the yarn drum is pulled to be kept in the cutting area for waiting for secondary melting. The device is suitable for batch removal of the tail yarn of the yarn drum. The distributing rod is arranged on the guide plate in a lifting mode. The pressing plate is arranged at the top of the two distributing rods. The adjacent yarn drums on the guide plate can be separated by the lifting of the distributing rod. The tail yarn wound between the adjacent yarn drums can be pressed off by the pressing plate. The automatic feeding is realized.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of textiles, and particularly relates to a full-automatic bobbin tail yarn removing machine. BACKGROUND

[0002] A bobbin is a main component for winding yarn in the field of textiles, and is generally repeatedly used. However, the used bobbin usually has tail yarn, and the amount of tail yarn is different for different machines and different production processes. Before the bobbin is repeatedly used, the tail yarn needs to be removed. The traditional removing method is roughly divided into three types: 1. One end of the bobbin is inserted into a baffle with a round hole, and the tail yarn is pressed against the round hole, and then the other end of the bobbin is forcibly pushed out. This scheme requires the bobbin to have sufficient strength to resist the friction force generated by the tail yarn winding. If the strength of the bobbin is insufficient or the tail yarn is wound too tightly, the bobbin is easily deformed or damaged; 2. The tail yarn on the bobbin is cut by a blade. The cutting depth of this scheme is difficult to control, and the tail yarn may not be completely removed or the bobbin may be scratched; 3. The tail yarn on the bobbin is melted by a hot air gun. This scheme basically does not damage the bobbin, but the parameters such as hot air temperature and hot air intensity need to be accurately controlled to ensure that the tail yarn is in a state of melting but not melting. However, the winding thickness of the tail yarn on each bobbin is different, and the parameters need to be frequently adjusted, so it is difficult to remove the tail yarn of the bobbin in batches. At the same time, the bobbins with tail yarn are usually stacked in the corner of the workshop or in the collection box. The tail yarn on adjacent bobbins is easily entangled with each other, and when the bobbins are normally taken out, the phenomenon of "adhesion" of multiple bobbins occurs, so that the above removing methods are difficult to realize automatic feeding. SUMMARY

[0003] The present application aims to overcome one or more disadvantages in the prior art, and provides a full-automatic bobbin tail yarn removing machine.

[0004] To achieve the above object, the technical scheme adopted by the present application is a full-automatic tail yarn removing machine for yarn cans, which comprises a tail yarn removing unit and an automatic feeding unit. The tail yarn removing unit comprises a guide roller frame, a blocking rod, a hot spray gun and a yarn suction pipe. The upper ends of the guide roller frame are provided with roller tracks for the rolling of yarn cans. The roller tracks extend from the front upper side to the rear lower side. The blocking rod is arranged on the roller tracks in a liftable manner. When the blocking rod is lifted, the yarn cans on the roller tracks can be blocked in the cutting zone in front of the blocking rod. The hot spray gun is arranged above the cutting zone in a movable manner. The hot spray gun is used to spray hot air flow downward to melt the tail yarn on the yarn cans in the cutting zone. The yarn suction pipe is arranged between the roller tracks and below the roller tracks. The yarn suction pipe is arranged corresponding to the cutting zone. The upper opening of the yarn suction pipe extends from one side of the roller track to the other side. The lower opening of the yarn suction pipe is connected to a vacuum. When the hot spray gun fails to melt all the tail yarn on the yarn cans in the first time, the broken ends of the residual tail yarn on the yarn cans are sucked by the yarn suction pipe, and the yarn cans are pulled to stay in the cutting zone for the second melting.

[0005] The automatic feeding unit comprises a feeding box, a guide plate, a lifting mechanism, a distribution rod and a heating plate. The feeding box is used to store yarn cans with tail yarn. The top of the feeding box is open to form an opening. The guide plate extends from the front upper side to the rear lower side. The front end of the guide plate is connected to the front edge of the opening. The rear end of the guide plate is connected to the roller tracks. The lifting mechanism is arranged in the feeding box and used to lift the yarn cans in the feeding box to the guide plate one by one. The distribution rod is arranged near the two side edges of the guide plate. The distribution rod is arranged on the guide plate in a liftable manner. The heating plate is arranged on the top of the two distribution rods. When the distribution rod is lifted, the adjacent yarn cans on the guide plate can be separated to roll to the roller tracks in sequence. In this process, the heating plate is powered to heat and cut the tail yarn wound between the adjacent yarn cans.

[0006] Preferably, the inclination angle of the roller tracks is 15 to 25 degrees. The roller tracks comprise first support plates for supporting the outer circumferential surfaces of the two ends of the yarn cans and second support plates for flattening the two end portions of the yarn cans. The second support plates are vertically connected to the side edges of the first support plates.

[0007] Preferably, the blocking rod has two rods. The two blocking rods are arranged on the two roller tracks respectively. The bottom of the two blocking rods is connected to a T-shaped support rod. The T-shaped support rod extends in the vertical direction and is located below the roller tracks. The bottom of the T-shaped support rod is connected to a first driving mechanism for driving the blocking rod to lift through a first transmission plate. The first driving mechanism is fixed to one side of the guide roller frame.

[0008] Further preferably, the tail yarn removing unit further comprises a storage plate arranged in front of the cutting area in a liftable manner, the storage plate is lifted and lowered synchronously with the blocking rod, the rear end of the material guide plate is connected with the roller table through the storage plate, the yarn package flows out of the material guide plate and rolls onto the storage plate, and is transferred to the cutting area on the roller table through the lifting of the storage plate.

[0009] Further preferably, the storage plate extends along the left-right direction, the two end portions thereof are upwardly protruded to form support tables, the upper end surface of the support table extends in a tilt manner from the front upper direction to the rear lower direction, and the tilt degree of the upper end surface of the support table is the same as the tilt degree of the roller table.

[0010] Preferably, the hot spray gun is arranged on an up-down moving mechanism, the up-down moving mechanism is connected with the guide roller frame through a left-right moving mechanism, so that the hot spray gun can move leftward and rightward relative to the cutting area and move up and down relative to the cutting area.

[0011] Preferably, the projection of the upper opening in the up-down direction is rectangular, and the width of the upper opening in the front-rear direction is one-half to two-thirds of the diameter of the yarn package.

[0012] Preferably, the tail yarn removing unit further comprises a box body for supporting the guide roller frame and the yarn suction pipe, the box body is hollow inside and communicates with the lower opening of the yarn suction pipe, and a vacuum pump for maintaining negative pressure inside the box body is arranged on the box body.

[0013] Preferably, the feeding box is arranged in front of the guide roller frame, the bottom of the feeding box is provided with a bottom plate extending in a tilt manner from the front upper direction to the rear lower direction, and the front edge of the bottom plate is connected with the inner wall of the feeding box.

[0014] Further preferably, a notch is arranged at the rear of the bottom plate, and the lifting mechanisms are symmetrically arranged on the left and right sides of the notch.

[0015] Further preferably, the lifting mechanism comprises lifting blocks with upper end surfaces extending in a tilt manner from the front upper direction to the rear lower direction, the lifting blocks are divided into fixed blocks and movable blocks, the movable blocks are arranged in a liftable manner, the movable blocks are staggered with the fixed blocks, and the lifting blocks at the most front and rear positions are movable blocks.

[0016] Further preferably, the tilt degree of the upper end surface of the lifting block, the tilt degree of the bottom plate and the tilt degree of the roller table are the same, and the tilt degree of the material guide plate is smaller than the tilt degree of the roller table.

[0017] Further preferably, the movable blocks are lifted and lowered asynchronously with the material distribution rod.

[0018] Further preferably, the lower ends of all the movable blocks are connected to the same connecting plate, the bottom of the connecting plate is connected to a first extension rod vertically extending downward, the bottom of the two distribution rods is connected to a crossbeam, the crossbeam is located below the guide plate, the bottom of the crossbeam is connected to a second extension rod vertically extending downward, the lower end of the second extension rod is connected to the lower end of the first extension rod through a transmission plate, and the transmission plate is rotatably arranged so that the movable blocks and the distribution rods are asynchronously lifted.

[0019] Further preferably, the automatic feeding unit further comprises a support frame for supporting the feeding box and a second driving mechanism for driving the first extension rod to lift, the transmission plate is rotatably arranged on the support frame, and the rotation axis of the transmission plate extends in the left-right direction, and the second driving mechanism is fixed to the side wall of the support frame.

[0020] Thanks to the above technical scheme, the present application has the following advantages compared with the prior art:

[0021] 1. By arranging the roller way for the yarn cylinder to roll on both sides of the upper end of the guide roller frame, the roller way extends from the front upper side to the rear lower side, the blocking rod is arranged to be liftable on the roller way, the hot spray gun is arranged to be movable leftward and rightward above the cutting area, the suction pipe is arranged to correspond to the cutting area between the roller ways, the upper opening of the suction pipe extends from one side of the roller way to the other side, the upper opening of the suction pipe is connected to a vacuum, when the blocking rod is lifted, the yarn cylinder on the roller way can be blocked in the cutting area, and the tail yarn can be removed by moving the hot spray gun, when the thickness of the tail yarn is too large to be completely melted, the broken end of the tail yarn remaining on the yarn cylinder can be sucked by the suction pipe, the yarn cylinder is pulled to stay in the cutting area for secondary melting, and the parameters do not need to be frequently adjusted, and the present application is particularly suitable for batch removal of the tail yarn of the yarn cylinder.

[0022] 2. By arranging the guide plate to extend from the front upper side to the rear lower side, the front end of the guide plate is connected to the front edge of the open top of the feeding box, the rear end of the guide plate is connected to the roller way, the lifting mechanism is arranged in the feeding box, the yarn cylinder in the feeding box is lifted to the guide plate one by one by the lifting mechanism, the two distribution rods are arranged close to the two side edges of the guide plate, the distribution rods are arranged to be liftable on the guide plate, the ironing plate is arranged on the top of the two distribution rods, the yarn cylinders on the guide plate can be separated by the lifting of the distribution rods and rolled on the roller way one by one in sequence, and the tail yarn wound between the adjacent yarn cylinders can be melted by the ironing plate, so that the "adhesion" is avoided, and the automatic feeding is realized. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 、 Figure 2 is a perspective view of the preferred embodiment of the present application.

[0024] Figure 3 isFigure 1 is a schematic view of the top view of the device.

[0025] Figure 4 is Figure 3 is a schematic view of the perspective view of the guide roller frame.

[0026] Figure 5 is Figure 3 is a schematic view of the sectional view of the device in A-A direction.

[0027] Figure 6 is Figure 3 is a schematic view of the sectional view of the device in B-B direction.

[0028] Wherein: 1. tail yarn removing unit; 2. automatic feeding unit; 10. guide roller frame; 11. roller way; 111. first support plate; 112. second support plate; 12. first linear bearing; 13. first transmission plate; 14. first driving mechanism; 15. storage plate; 151. support table; 152. connecting rod; 16. second linear bearing; 20. blocking rod; 21. T-shaped support rod; 30. hot spray gun; 31. up-down moving mechanism; 32. left-right moving mechanism; 40. yarn suction pipe; 41. first opening; 42. second opening; 43. box body; 44. vacuum pump; 50. feeding box; 51. open mouth; 52. bottom plate; 53. notch; 54. support frame; 55. second driving mechanism; 56. third transmission plate; 60. guide plate; 71. fixed block; 72. movable block; 73. connecting plate; 731. first extension rod; 80. distribution rod; 81. cross beam; 811. second extension rod; 82. second transmission plate; 90. ironing plate. DETAILED DESCRIPTION

[0029] The preferred embodiments of the present application will be described in detail below with reference to the drawings.

[0030] As Figures 1 to 6As shown, the yarn drum tail yarn full-automatic removing machine provided by the application comprises a tail yarn removing unit 1 and an automatic feeding unit 2. The tail yarn removing unit 1 comprises a guide roller frame 10, a blocking rod 20, a hot spray gun 30 and a yarn suction pipe 40. Rollers 11 for the yarn drum to roll are arranged on the upper ends of the two sides of the guide roller frame 10. The rollers 11 extend from the front upper side to the rear lower side in an inclined manner. The inclination angle of the rollers 11 is 15 to 25 degrees (the included angle between the plane where the rollers 11 are located and the horizontal plane) so that the yarn drum can roll along the rollers 11 spontaneously under the action of gravity. Specifically, the rollers 11 comprise first support plates 111 for supporting the outer circumferential surfaces of the two ends of the yarn drum and second support plates 112 for leaning against the two end portions of the yarn drum. The second support plates 112 are connected to the outer side edges of the first support plates 111 in a perpendicular manner. The blocking rod 20 is arranged on the rollers 11 in a liftable manner. The blocking rod 20 has two rods. The two rods of the blocking rod 20 are arranged on the first support plates 111 of the two rollers 11 respectively. The blocking rod 20 divides the area on the rollers 10 into a cutting zone in front of the blocking rod 20 and a rolling zone behind the blocking rod 20. When the blocking rod 20 is lifted, the yarn drum that rolls off the top of the rollers 10 can be blocked in the cutting zone. When the blocking rod 20 is lowered, the yarn drum in the cutting zone can roll to the rolling zone smoothly and finally roll out of the rollers 10. The hot spray gun 30 is arranged above the cutting zone in a left-right movable manner. The hot spray gun 30 is used to spray hot air downward to melt the tail yarn on the yarn drum in the cutting zone. The yarn suction pipe 40 is arranged between the two rollers 11 and is lower than the rollers 11. The yarn suction pipe 40 is arranged corresponding to the cutting zone. The correspondence refers to the extension of the upper opening 41 of the yarn suction pipe 40 from one roller 11 to the other roller 11 in the left-right direction so as to suck the tail yarn melted from the cutting zone. The lower opening 42 of the yarn suction pipe 40 is smaller than the upper opening 41, so that the yarn suction pipe 40 is trumpet-shaped. The lower opening 42 of the yarn suction pipe 40 is connected to a vacuum (always connected). When the hot spray gun 30 fails to melt all the tail yarn on the yarn drum in the first movement, the broken ends of the residual tail yarn on the yarn drum are sucked by the yarn suction pipe 40 to form a pulling force to pull the yarn drum to keep it in the cutting zone to wait for the second melting by the hot spray gun 30 in the second movement.The automatic feeding unit 2 comprises a feeding box 50, a guide plate 60, a lifting mechanism, a separating rod 80 and a hot plate 90. The feeding box 50 is used for storing the yarn bobbins with tail yarn, and the top of the feeding box 50 is open to form an opening 51. The guide plate 60 extends from the front upper side to the rear lower side, and the front end of the guide plate 60 is connected to the front edge of the opening 51. The rear end of the guide plate 60 is connected to the roller way 11. The lifting mechanism is arranged in the feeding box 50 and is used for lifting the yarn bobbins in the feeding box 50 one by one to the guide plate 60. The separating rod 80 has two rods, and the two rods are arranged near the two side edges of the guide plate 60. The separating rod 80 is arranged on the guide plate 60 in a lifting manner. The yarn bobbins lifted to the guide plate 60 by the lifting mechanism can roll along the guide plate 60 to the rear lower side under the action of gravity. When the separating rod 80 is raised, the yarn bobbins located in front of the separating rod 80 are blocked and cannot continue to roll to the rear lower side. When the separating rod 80 is lowered, the yarn bobbins on the guide plate 60 can smoothly roll to the rear lower side. Thus, the adjacent yarn bobbins corresponding to the separating rod 80 on the guide plate 60 can be separated and sequentially rolled to the roller way 11 when the separating rod 80 is raised and lowered. The hot plate 90 (electric heating plate) is arranged at the top of the two separating rods 80. During the process of separating the adjacent yarn bobbins by moving the separating rod 80 up and down, the hot plate 90 is powered to heat and melt the tail yarn wound between the two adjacent yarn bobbins.

[0031] The advantages of such an arrangement are as follows:

[0032] 1. The tail yarn on the yarn bobbins can be melted by moving the hot air gun left and right, and when the thickness of the tail yarn is too large to be completely melted, the broken end of the residual tail yarn on the yarn bobbins can be sucked by the yarn suction pipe, and the yarn bobbins can be pulled to stay in the cutting area for secondary melting without frequent parameter adjustment, which is particularly suitable for batch removal of tail yarn from the yarn bobbins.

[0033] 2. The adjacent yarn bobbins on the guide plate can be separated by raising and lowering the separating rod, and the tail yarn wound between the adjacent yarn bobbins can be melted by the hot plate during the process of separating the adjacent yarn bobbins, thereby avoiding "adhesion" and achieving automatic feeding.

[0034] To ensure that the two blocking rods 20 are synchronous and smoothly lifted, in the embodiment, the bottoms of the two blocking rods 20 are connected on the T-shaped support rod 21, the T-shaped support rod 21 is located below the roller bed 11, the vertical rod of the T-shaped support rod 21 extends in the vertical direction, the first linear bearing 12 is fixedly arranged on the guide roller frame 10, the lower end of the vertical rod of the T-shaped support rod 21 is movably arranged in the first linear bearing 12, the bottom of the vertical rod of the T-shaped support rod 21 is connected with the first driving mechanism 14 for driving the blocking rod 20 to lift through the first transmission plate 13, the first driving mechanism 14 is fixedly arranged on one side of the guide roller frame 10, and the first driving mechanism 14 is a combination of a stepping motor and a screw pair to facilitate amplitude modulation and speed regulation, in the embodiment, the middle part of the first transmission plate 13 is rotationally connected to the guide roller frame 10, the rotation axis line thereof extends horizontally in the front-rear direction, and the two end parts thereof are rotationally and slidingly connected with the screw nut of the screw pair and the lower end of the vertical rod of the T-shaped support rod 21 respectively to form a lever structure, thereby further improving the precision of amplitude modulation and speed regulation.

[0035] To avoid material accumulation, in the embodiment, the tail yarn removing unit 1 further comprises the material accumulation plate 15 which is arranged in front of the cutting area and is liftable, the material accumulation plate 15 is synchronously lifted with the blocking rod 20, that is, the material accumulation plate 15 is lifted when the blocking rod 20 is lifted, and the material accumulation plate 15 is lowered when the blocking rod 20 is lowered, and the lifting amplitude of the material accumulation plate 15 is the same as the lifting amplitude of the blocking rod 20, the rear end of the guide plate 60 is connected with the roller bed 11 through the material accumulation plate 15, the yarn cans flowing out of the guide plate 60 roll on the material accumulation plate 15, and are transferred to the cutting area on the roller bed 11 through the lifting of the material accumulation plate 15, specifically, when the material accumulation plate 15 is lowered to the limit position, the upper end surface of the material accumulation plate 15 is not higher than the rear edge of the guide plate 60, when the material accumulation plate 15 is lifted to the limit position, the upper end surface of the material accumulation plate 15 is not lower than the front edge of the roller bed 11, further, the material accumulation plate 15 extends in the left-right direction, the left and right end parts thereof protrude upward to form the support table 151, the upper end surface of the support table 151 extends obliquely from the front upper direction to the rear lower direction, and the oblique degree of the upper end surface of the support table 151 is the same as the oblique degree of the roller bed 11, when the material accumulation plate 15 is lifted to the limit position, the upper end surface of the support table 151 is located on the same inclined surface as the upper end surface of the first support plate 111 of the roller bed 11, and when the material accumulation plate 15 is lowered to the limit position, the front edge of the upper end surface of the support table 151 is flush with the rear edge of the guide plate 60.

[0036] In order to realize the synchronous lifting of the material accumulation plate 15 and the blocking rod 20, in the embodiment, the bottom center of the material accumulation plate 15 is connected with a downward vertical extension connecting rod 152, the lower end of the connecting rod 152 is also in rotating and sliding connection with the end of the first transmission plate 13, specifically, the end of the first transmission plate 13 away from the first driving mechanism 14 has two branches, one of which is in rotating and sliding connection with the lower end of the connecting rod 152, and the other is in rotating and sliding connection with the bottom of the vertical rod of the T-shaped supporting rod 21, in order to ensure the stability of the lifting of the connecting rod 152, the second linear bearing 16 is also arranged on the guide roller frame 10, and the lower end of the connecting rod 152 can slide up and down in the second linear bearing 16.

[0037] In order to facilitate the adjustment of the effect of the hot air jet of the hot air gun 30, in the embodiment, the hot air gun 30 is arranged on the up-down moving mechanism 31, and the up-down moving mechanism 31 is connected with the guide roller frame 10 through the left-right moving mechanism 32, so that the hot air gun 30 can move left and right relative to the cutting area and move up and down relative to the cutting area.

[0038] In order to ensure the yarn suction effect of the yarn suction pipe 40, in the embodiment, the projection of the upper opening 41 of the yarn suction pipe 40 in the up-down direction is rectangular, the width of the upper opening 41 in the front-rear direction is one half to two thirds of the diameter of the yarn cylinder, at the same time, the plane where the upper opening 41 of the yarn suction pipe 40 is located is parallel to the plane where the first supporting plate 111 of the roller bed 11 is located, and the distance between the plane where the upper opening 41 of the yarn suction pipe 40 is located and the plane where the first supporting plate 111 is located is 1.1 to 2.0 times the thickness of the tail yarn layer on the yarn cylinder, further, the tail yarn removing unit 1 further comprises a box body 43 for supporting the guide roller frame 10 and the yarn suction pipe 40, the box body 43 is hollow inside and communicates with the lower opening 42 of the yarn suction pipe 40, and the box body 43 is provided with a vacuum pump 44 for maintaining negative pressure in the box body 43.

[0039] In order to facilitate the lifting of the yarn cylinder in the feeding box 50 and the arrangement of the lifting mechanism, in the embodiment, the feeding box 50 is arranged in front of the guide roller frame 10, the bottom of the feeding box 50 is provided with a bottom plate 52 extending obliquely from the front upward direction to the rear downward direction, the oblique degree of the bottom plate 52 is the same as the oblique degree of the roller bed 11, the front edge of the bottom plate 52 is connected with the inner wall of the feeding box 50, the rear of the bottom plate 52 is provided with a gap 53, and the lifting mechanism is symmetrically distributed on the left and right sides of the gap 53.

[0040] The lifting mechanism is a stepped lifting mechanism. Specifically, the lifting mechanism includes lifting blocks that extend obliquely from the front upper end to the rear lower end of the upper end surface. The lifting blocks are divided into fixed blocks 71 and movable blocks 72. The fixed blocks 71 are fixedly arranged on the inner wall surface of the feeding box 50. The movable blocks 72 are arranged in a lifting manner. The movable blocks 72 are arranged alternately with the fixed blocks 71. The lifting blocks at the frontmost and rearmost positions are movable blocks 72. Further, the oblique degree of the upper end surface of the lifting blocks, the oblique degree of the bottom plate 52, and the oblique degree of the roller 11 are all the same. The oblique degree of the guide plate 60 is less than the oblique degree of the roller 11. All the movable blocks 72 are lifted and lowered synchronously. When the movable blocks 72 are lowered to the limit position, the front edge of the upper end surface of the frontmost movable block 72 is flush with the rear edge of the bottom plate 52. The upper end surface of any movable block 72 is not higher than the upper end surface of the fixed block 71 in front of the movable block 72. When the movable blocks 72 are lifted to the limit position, the rear edge of the upper end surface of the rearmost movable block 72 is flush with the front edge of the guide plate 60. The upper end surface of any movable block 72 is not lower than the upper end surface of the fixed block 71 in front of the movable block 72. In this way, the yarn cans in the feeding box 50 can be lifted to the guide plate 60 in sequence through the synchronous lifting of all the movable blocks 72.

[0041] To realize the synchronous lifting of all the movable blocks 72, further, the lower end portions of all the movable blocks 72 are connected to the same connecting plate 73. The bottom of the connecting plate 73 is connected to a first extension rod 731 that extends vertically downward. The synchronous lifting of all the movable blocks 72 can be realized by driving the first extension rod 731 to lift and lower.

[0042] Further, the movable blocks 72 are lifted and lowered asynchronously with the distribution rods 80. The asynchronous lifting means that the movable blocks 72 are lowered when the distribution rods 80 are lifted, and the movable blocks 72 are lifted when the distribution rods 80 are lowered. The lifting amplitude of the movable blocks 72 can be the same as or different from the lifting amplitude of the distribution rods 80.

[0043] To realize the asynchronous lifting, in the present embodiment, the bottom of the two distribution rods 80 is connected to a cross beam 81. The cross beam 81 is located below the guide plate 60. The bottom of the cross beam 81 is connected to a second extension rod 811 that extends vertically downward. The lower end portion of the second extension rod 811 is connected to the lower end portion of the first extension rod 731 through a second transmission plate 82. The second transmission plate 82 is arranged in a rotatable manner. The two ends of the second transmission plate 82 are rotatably and slidingly connected to the lower end portion of the first extension rod 731 and the lower end portion of the second extension rod 811, respectively, forming a lever structure, so that the movable blocks 72 are lifted and lowered asynchronously with the distribution rods 80.

[0044] For the convenience of setting and driving, further, the automatic feeding unit 2 further comprises a supporting frame 54 for supporting the feeding box 50, a second driving mechanism 55 for driving the first extension rod 731 to lift, the second transmission plate 82 is rotatably arranged on the supporting frame 54, the rotation axis of the second transmission plate 82 extends along the left-right direction, the second driving mechanism 55 drives the bottom of the first extension rod 731 to lift through the third transmission plate 56, the second driving mechanism 55 is fixedly arranged on the side wall of the supporting frame 54, and the second driving mechanism 55 also adopts the combination of a stepping motor and a screw pair to realize the precision control.

[0045] It should be noted that in the embodiment, the rotary sliding connection can be realized by the cooperation of a pin shaft and a waist-shaped hole, which is prior art and will not be described herein.

[0046] The above embodiments are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and to implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made according to the spirit and essence of the present application shall be covered within the protection scope of the present application.

Claims

1. A fully automatic yarn tail removal machine for yarn bobbins, comprising a yarn tail removal unit and an automatic feeding unit, characterized in that: The yarn tail removal unit includes a guide roller frame, a blocking rod, a hot air gun, and a yarn suction tube. The upper end of the guide roller frame is provided with roller tracks on both sides for the yarn bobbin to roll. The roller tracks extend obliquely from the front upper to the rear lower. The blocking rod is vertically mounted on the roller tracks. When the blocking rod is raised, it can block the yarn bobbin on the roller tracks in the cutting area in front of the blocking rod. The hot air gun is positioned above the cutting area and can move left and right. The hot air gun is used to spray hot air downwards to melt the yarn tail on the yarn bobbin located in the cutting area. The yarn suction tube is located between the roller tracks and below the roller tracks. The yarn suction tube is set corresponding to the cutting area. The upper opening of the yarn suction tube extends from one side of the roller track to the other side. The lower opening of the yarn suction tube is connected to a vacuum. When the hot air gun fails to melt all the yarn tail on the yarn bobbin on the first movement, the broken ends of the remaining yarn tail on the yarn bobbin are attracted by the yarn suction tube, pulling the yarn bobbin to keep it in the cutting area for secondary melting. The automatic feeding unit includes a feeding box, a guide plate, a lifting mechanism, a separating rod, and a heating plate. The feeding box is used to store yarn bobbins with tail yarns, and its top is open to form an opening. The guide plate extends obliquely from the front upper to the rear lower, with its front end connected to the front edge of the opening and its rear end connected to the roller conveyor. The lifting mechanism is located inside the feeding box and is used to lift the yarn bobbins in the feeding box one by one onto the guide plate. There are two separating rods, which are located near the two sides of the guide plate and can be raised and lowered through the guide plate. The heating plate is mounted on the top of the two separating rods. When the separating rods are raised and lowered, they can separate adjacent yarn bobbins on the guide plate, causing them to roll sequentially onto the roller conveyor. During this process, the heating plate is energized and heated to cut off the tail yarns wrapped between two adjacent yarn bobbins.

2. The fully automatic yarn tail removal machine according to claim 1, characterized in that: The roller conveyor has an inclination angle of 15 to 25 degrees. The roller conveyor includes a first support plate for supporting the outer circumferential surfaces of both ends of the yarn bobbin and a second support plate for flattening the two ends of the yarn bobbin. The second support plate is vertically connected to the side of the first support plate.

3. The fully automatic yarn tail removal machine according to claim 1, characterized in that: There are two blocking rods, which are respectively installed on the two roller conveyors. The bottom of the two blocking rods is connected to a T-shaped support rod. The T-shaped support rod extends vertically and is located below the roller conveyor. The bottom of the T-shaped support rod is connected to a first drive mechanism that drives the blocking rod to rise and fall through a first transmission plate. The first drive mechanism is fixed to one side of the guide roller frame.

4. The fully automatic yarn tail removal machine according to claim 3, characterized in that: The tail yarn removal unit also includes a material storage plate that can be raised and lowered in front of the cutting area. The material storage plate and the blocking rod are raised and lowered synchronously. The rear end of the guide plate is connected to the roller conveyor through the material storage plate. The yarn bobbin flowing out from the guide plate rolls onto the material storage plate and is transferred to the cutting area on the roller conveyor by the raising of the material storage plate.

5. The fully automatic yarn tail removal machine according to claim 4, characterized in that: The material storage plate extends in the left-right direction, with its two ends protruding upward to form a support platform. The upper surface of the support platform extends obliquely from the front-upward to the rear-downward direction, and the degree of obliqueness of the upper surface of the support platform is the same as the degree of obliqueness of the roller conveyor.

6. The fully automatic yarn tail removal machine according to claim 1, characterized in that: The hot spray gun is mounted on a vertical moving mechanism, which is connected to the guide roller frame via a horizontal moving mechanism, so that the hot spray gun can move horizontally relative to the cutting area.

7. The fully automatic yarn tail removal machine according to claim 1, characterized in that: The projection of the upper opening in the vertical direction is rectangular, and the width of the upper opening in the front-back direction is one-half to two-thirds of the diameter of the yarn bobbin.

8. The fully automatic yarn tail removal machine according to claim 1, characterized in that: The tail yarn removal unit also includes a box for supporting the guide roller frame and the suction tube. The box is hollow inside and connected to the lower opening of the suction tube. The box is equipped with a vacuum pump for maintaining negative pressure inside the box.

9. The fully automatic yarn tail removal machine according to claim 1, characterized in that: The feeding box is located in front of the guide roller frame. The bottom of the feeding box has a bottom plate that extends obliquely from the front and top to the rear and downward. The front edge of the bottom plate is connected to the inner wall of the feeding box.

10. The fully automatic yarn tail removal machine according to claim 9, characterized in that: The base plate has a notch at the rear, and the lifting mechanism is symmetrically distributed on the left and right sides of the notch.

11. The fully automatic yarn tail removal machine according to claim 9, characterized in that: The lifting mechanism includes a lifting block whose upper surface extends obliquely from the front upper to the rear lower. The lifting block is divided into a fixed block and a movable block. The movable block is vertically and vertically arranged. The movable block and the fixed block are staggered. The lifting blocks located at the frontmost and rearmost positions are both movable blocks.

12. The fully automatic yarn tail removal machine according to claim 11, characterized in that: The inclination of the upper surface of the lifting block, the inclination of the bottom plate, and the inclination of the roller conveyor are the same, while the inclination of the guide plate is less than that of the roller conveyor.

13. The fully automatic yarn tail removal machine according to claim 11, characterized in that: The movable block and the material distribution rod move asynchronously up and down.

14. The fully automatic yarn tail removal machine according to claim 13, characterized in that: The lower ends of all the movable blocks are connected to the same connecting plate. The bottom of the connecting plate is connected to a first extension rod extending vertically downwards. The bottom of the two material distribution rods is connected to a crossbeam. The crossbeam is located below the guide plate. The bottom of the crossbeam is connected to a second extension rod extending vertically downwards. The lower end of the second extension rod is connected to the lower end of the first extension rod through a transmission plate. The transmission plate is rotatably set so that the movable blocks and the material distribution rods rise and fall asynchronously.

15. The fully automatic yarn tail removal machine according to claim 14, characterized in that: The automatic feeding unit also includes a support frame for supporting the feeding box and a second drive mechanism for driving the first extension rod to rise and fall. The transmission plate is rotatably mounted on the support frame, and the rotation axis of the transmission plate extends in the left-right direction. The second drive mechanism is fixed to the side wall of the support frame.

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