Automatic bobbin changing mechanism of a winding machine

Abstract

The application discloses a kind of automatic bobbin changing mechanism of winding machine, including winding machine body, the top of winding machine body is rotatably provided with grooved drum, the rear of winding machine is provided with belt conveyor, the top of winding machine body is fixedly provided with a pair of vertical guide rod one, wire drum lifting platform is slidably arranged on two guide rods one, rotating shaft parallel to grooved drum is rotatably arranged on wire drum lifting platform, wire drum clamping device is arranged on rotating shaft, rotating device for driving rotating shaft rotation is arranged on wire drum lifting platform, the top of winding machine body is also slidably provided with U-shaped sliding frame, automatic thread pulling device and automatic thread cutting device are arranged at the front end of sliding frame, driving cylinder one for driving sliding is fixedly installed at the rear of sliding frame of winding machine, connecting rod one is hingedly connected between sliding frame and wire drum lifting platform, the top of guide rod one is fixedly provided with wire drum storage rack.The application has the following advantages and effects: it has the effect of automatically replacing wire drum.

Description

Technical Field

[0001] The present invention relates to the technical field of textile equipment, in particular to an automatic bobbin changing mechanism of a bobbin winder. Background Art

[0002] An automatic bobbin winder is a textile device that winds yarn from individual bobbins onto large bobbins. Currently, when the bobbins on the automatic bobbin winder are fully loaded with yarn, it is generally necessary to manually replace the bobbins with new ones. However, since multiple automatic bobbin winders generally work side by side, the worker needs to walk back and forth between the various automatic bobbin winders during the manual bobbin replacement process. This not only makes the replacement work heavy for the workers, but also takes a long time, resulting in low efficiency of the automatic bobbin winder. Summary of the Invention

[0003] The purpose of the present invention is to provide an automatic bobbin changing mechanism for a bobbin winder, which has the effect of automatically changing bobbins.

[0004] The above technical objectives of the present invention are achieved through the following technical solutions: an automatic bobbin changing mechanism of a bobbin winder, comprising a bobbin winder body, a grooved drum for evenly winding the spun yarn onto the bobbin is rotatably provided on the top of the bobbin winder body, a belt conveyor for transporting the wound yarn bobbins is provided at the rear of the bobbin winder, a pair of vertical guide rods are fixedly provided on the top of the bobbin winder body, a bobbin lifting platform is slidably provided on the two guide rods, a rotating shaft parallel to the grooved drum is rotatably provided on the bobbin lifting platform, and a bobbin clamping device is provided on the rotating shaft The bobbin lifting platform is provided with a rotating device that drives the rotating shaft to rotate. A U-shaped sliding frame is also slidably provided on the top of the winder body. The sliding frame is located between the rotating shaft and the groove drum and slides horizontally. An automatic wire pulling device and an automatic wire cutting device are provided at the front end of the sliding frame. The winder is located behind the sliding frame and is fixedly installed with a driving cylinder that drives it to slide. A connecting rod is hingedly connected between the sliding frame and the bobbin lifting platform. A bobbin storage rack is fixedly provided on the top of the guide rod, and the bobbin storage rack is located within the clamping range of the bobbin clamping device.

[0005] When the bobbin needs to be changed, the cylinder is first driven to drive the sliding frame to move toward the grooved drum of the bobbin winder. Since the two ends of the connecting rod are respectively hingedly connected to the sliding frame and the bobbin lifting platform, the bobbin lifting platform will be pushed to lift the rotating shaft and the bobbin clamping device upward during the movement of the sliding frame, so as to move the fully loaded bobbin away from the grooved drum at the top of the bobbin winder. When the bobbin lifting platform is lifted to a certain height and the sliding frame moves between the grooved drum and the rotating shaft, the rotating device on the lifting platform will drive the rotating shaft to rotate counterclockwise by a certain angle, so that the fully loaded bobbin is flipped onto the belt conveyor behind the bobbin winder together with the bobbin clamping device. At the same time, the automatic thread cutting device at the front end of the sliding frame will cut the yarn between the bobbin winder and the fully loaded bobbin, and then the bobbin clamping device will release the fully loaded bobbin, so that the fully loaded bobbin naturally falls onto the belt conveyor. The bobbin lifting platform is lifted up to a certain height again, and the rotating device will drive the rotating shaft to rotate counterclockwise again, so that the bobbin clamping device takes the empty bobbin out of the bobbin storage rack and rotates it to the top of the groove drum, and finally drives the piston rod of cylinder one to pull the sliding rack back to its initial position, and the bobbin lifting platform will move downward under the action of connecting rod one, and make the bottom of the empty bobbin contact with the upper surface of the groove drum. At the same time, the automatic wire pulling assembly at the front end of the sliding rack will pull the cut wire from the front of the groove drum to the back of the groove drum, so that the empty bobbin and the groove drum just clamp the wire to ensure that the wire contacts the barrel of the empty bobbin, thereby facilitating the subsequent winding work.

[0006] The present invention is further configured as follows: the wire bobbin clamping device includes a clamping arm 1 fixed on the rotating shaft and located at one end of the groove drum, a through hole opened in the center of the rotating shaft and passing through both ends, a sliding shaft sliding through the through hole, a clamping arm 2 fixed to the front end of the sliding shaft and located at the other end of the groove drum, a sliding assembly driving the sliding shaft to slide, a slide groove 1 opened on one side of the clamping arm facing the second clamping arm, a slide groove 2 opened on the side of the second clamping arm facing the first clamping arm, a clamping slider 1 and a clamping slider 2 sliding in the slide groove 1 and the slide groove 2 respectively, Block 1 and block 2 are fixedly provided on clamping slider 1 and clamping slider 2, and spring 1 and spring 2 are respectively installed in slide groove 1 and slide groove 2. The clamping slider 1 and clamping slider 2 are parallel to each other. Block 1 and block 2 can be respectively inserted into the two ends of the wire drum. A flat key is fixedly provided on the side wall of the sliding shaft. The rotating shaft is located in the through hole and has a key groove for fitting the flat key. The two ends of the spring 1 are respectively connected to the top of slide groove 1 and clamping slider 1, and the two ends of the spring 2 are respectively connected to the top of slide groove 2 and clamping slider 2.

[0007] By adopting the above technical solution, when the bobbin clamping device releases the fully loaded bobbin, the sliding assembly will first drive the sliding shaft forward to pass through the front of the through hole of the rotating shaft, so that the clamping arm 2 at the front end of the sliding shaft is away from the clamping arm 1, and at the same time, the plug 2 on the clamping arm 2 will withdraw from one end of the fully loaded bobbin, so that the one end of the fully loaded bobbin loses the support of the plug 2. Since the unsupported end of the fully loaded bobbin is facing downward at this time, the fully loaded bobbin will naturally fall onto the belt conveyor under the action of gravity; when the bobbin clamping device clamps the fixed When the empty wire bobbin is positioned, the sliding assembly will first drive the sliding shaft in the reverse direction to pass through the through hole of the rotating shaft, so that the clamping arm 2 at the front end of the sliding shaft is close to the clamping arm 1. At the same time, the plug 2 on the clamping arm 2 will extend into one end of the empty wire bobbin and push the other end of the empty wire bobbin to approach and insert the plug 1 on the clamping arm 1, so that the two ends of the empty wire bobbin are respectively supported and positioned by the plug 1 and the plug 2. Finally, with the lifting and lowering of the wire bobbin lifting platform and the rotation of the rotating shaft, the empty wire bobbin can be taken out of the wire bobbin storage rack and placed above the groove drum. Among them, since the surface thickness of the empty bobbin will continue to increase during the winding process, the clamping slider 1 on the clamping arm 1 and the clamping slider 2 on the clamping arm 2 will slide upward in the slide groove 1 and the slide groove 2 respectively, thereby giving the empty bobbin a certain amount of rising space, allowing the yarn to be smoothly wound onto the empty bobbin. At the same time, the spring 1 in the slide groove 1 and the spring 2 in the slide groove 2 will be compressed and deformed in this process, and at the same time give the clamping slider 1 and the clamping slider 2 a certain reaction force, thereby maintaining the mutual contact between the empty bobbin and the groove drum, so that the groove drum can effectively drive the empty bobbin to rotate quickly to wind the yarn.

[0008] The present invention is further configured as follows: the rotating device includes a worm gear fixed on a rotating shaft, a servo motor fixedly mounted on a bobbin lifting platform, a worm fixed to an output end of the servo motor and engaging with the transmission worm gear, the worm gear and a clamping arm are respectively located on both sides of the bobbin lifting platform, and a motor bracket for mounting a servo motor is fixedly provided on the bobbin lifting platform.

[0009] By adopting the above technical solution, when it is necessary to drive the rotating shaft to rotate, the servo motor will first drive the worm to rotate, then the worm will engage the transmission worm wheel, and finally the worm wheel will drive the rotating shaft and the clamping arm to rotate. Since the side wall of the above-mentioned sliding shaft is fixedly provided with a flat key, the rotating shaft is located in the through hole and a keyway for engaging the flat key is provided. Therefore, the sliding shaft and the clamping arm 2 will also rotate with the rotating shaft, thereby achieving the effect of driving the bobbin clamping device to rotate.

[0010] The present invention is further configured as follows: the sliding assembly includes a second driving cylinder fixed on the lifting platform, a connecting tube fixed to the front end of the piston rod of the second driving cylinder, a connecting column fixed to one end of the sliding shaft and extending into the connecting tube, and a limiting ring fixed to the opening of the connecting tube and limiting the rotation of the connecting column inside it. The inner diameter of the connecting tube is consistent with the outer diameter of the connecting column, and both are larger than the outer diameter of the sliding shaft. The inner diameter of the limiting ring is consistent with the outer diameter of the sliding shaft.

[0011] By adopting the above technical solution, not only can the driving cylinder 2 be used to drive the sliding shaft to slide through the rotating shaft through hole, but its connecting column, connecting tube and limit ring form a rotating connection structure, which can also prevent the driving cylinder 2 from affecting the normal rotation of the sliding shaft.

[0012] The present invention is further configured as follows: the automatic wire pulling device includes a sliding plate 1 fixed to the front end of the sliding frame, a pair of guide rods 2 sliding through the rear end of the sliding frame, a sliding plate 2 fixedly connected to the front ends of the two guide rods 2 and parallel to the sliding plate 1, a limit baffle fixed to the top of the winder and limiting the moving distance of the sliding plate 2, a pair of wire clamping plates vertically slidably connected to the front end of the sliding plate 2, a long sliding hole opened on the wire clamping plate for the sliding plate 1 to pass through, a sliding groove 3 opened on the opposite side of the wire clamping plate, a wire clamping slider that slides and retracts in the sliding groove 3, a plurality of springs 3 arranged between the bottom of the sliding groove 3 and the wire clamping slider, a pair of one ends hinged together at the middle of the sliding plate 1 The cam is connected to the sliding plate by a spring, and the cam is connected to the sliding plate by a spring.

[0013] By adopting the above technical solution, when the driving cylinder 1 drives the sliding frame to approach the groove drum, first the sliding plate 1 and the sliding plate 2 will move forward together with the sliding frame. After the sliding plate 2 is blocked by the limit baffle, since the sliding frame continues to move forward at this time, the sliding frame will continue to move toward the direction of approaching the sliding plate 2 and compress the spring 4 between the two. At the same time, the sliding plate 1 will move parallel to the direction away from the sliding plate 2. Because one end of the two connecting rods 2 is hinged to the middle part of the sliding plate 1, and the other end is hinged to the two sliding clamping plates on the sliding plate 2, when the sliding plate 1 is away from the sliding plate 2 During the process, the two connecting rods 2 will pull the two clamping plates closer to each other, and before that, the sliding frame has already moved the sliding plate 2 and the clamping plate to the back and both sides of the yarn respectively. Therefore, when the sliding plate 1 moves forward and the two clamping plates approach each other, the yarn will be driven to the middle of the sliding plate 1 and clamped by the clamping sliders on the two clamping plates at the same time. Finally, the locking assembly in the long sliding hole of the clamping plate will lock the sliding plate 1 in this state on the clamping plate, and then when the driving cylinder 1 drives the sliding frame back, it will keep the clamping slider clamping the yarn, thereby achieving the effect of automatic wire pulling. When the empty bobbin is replaced on the groove drum, the locking assembly will immediately release the lock on the sliding plate 1, and the spring 4 between the sliding frame and the sliding plate 2 will quickly restore the distance between the sliding plate 1 and the sliding plate 2, and release the clamping slider from the yarn, thereby ensuring that the yarn is smoothly connected to the empty bobbin. Among them, a pair of guide rods 3 on the sliding plate 2 can ensure that the clamping plate slides stably on the sliding plate 2.

[0014] The present invention is further configured as follows: the locking assembly includes a slide groove four opened at the bottom of the long slide hole, a locking plate that slides and retracts in the slide groove four, a spring five fixed between the bottom of the slide groove four and the lower end of the locking plate, an unlocking rod that slides vertically from one end of the wire clamping plate and passes into the slide groove four, and an unlocking support plate that is fixed to the top of the winder and located in front of the driving cylinder one; the end of the locking plate extending out of the slide groove four is provided with a chamfer one, and the inclined surface of the chamfer one faces the sliding plate two; the side of the locking plate is provided with a triangular groove, and the inclined surface of the triangular groove is parallel to the chamfer one; the end of the unlocking rod extending into the slide groove four is provided with a chamfer two that is parallel to and contacts the inclined surface of the triangular groove.

[0015] By adopting the above technical solution, when the sliding plate 1 passes through the chute 4 at the bottom of the long slide hole, the locking plate will first be immediately extended from the bottom of the chute 4 under the action of the spring 5, and the sliding plate 1 will be locked between the locking plate and the front end of the long slide hole, so as to ensure that the thread clamping slider can keep clamping the yarn when the driving cylinder drives the slide frame to return. When the driving cylinder 1 pulls the slide frame back to the initial position, not only will the bobbin lifting platform place the empty bobbin on the groove drum, but the unlocking rod extending from the tail end of the thread clamping plate will also be unlocked and pushed into the chute 4 by the plate. Since the side of the locking plate is provided with a triangular groove, the end of the unlocking rod extending into the chute 4 is provided with a chamfer 2 parallel to the inclined surface of the triangular groove, so the unlocking rod will pull the locking plate back into the chute 4, thereby releasing the lock on the sliding plate 1. The chamfer 1 at the upper end of the locking plate can ensure that the sliding plate 1 can only pass through the chute 4 to the front end of the long slide hole in one direction.

[0016] The present invention is further configured as follows: the automatic wire trimming device includes a cutter fixed to one side of a wire clamping plate, and a cutting groove opened on the other wire clamping plate for the front end of the cutter to extend into. The cutter and the cutting groove are respectively arranged on opposite sides of the wire clamping plate and located above the slide groove three. The front end of the cutter does not exceed the longest width of the wire clamping slider sliding out of the slide groove three.

[0017] By adopting the above technical solution, when the clamping slider clamps the yarn, the two clamping plates will move closer together, so that the two clamping sliders retreat into the chute three respectively, and continuously compress the spring three between the bottom of the chute three and the clamping slider. Then the cutter located above the chute three will cooperate with the cutting groove in the process to cut off the unclamped part above the yarn, so that the bobbin clamping device can release the fully loaded bobbin while continuing to clamp and fix the lower part of the yarn after it is cut, and cooperate with the automatic wire pulling device to connect the yarn to the empty bobbin. Among them, since the front end of the cutter does not exceed the longest width of the clamping slider sliding out of the chute three, the cutter will cut off the upper part of the yarn only after the clamping slider clamps and fixes the lower part of the yarn, thereby ensuring that the automatic wire pulling device can safely and effectively pull the cut yarn to the back of the groove barrel.

[0018] The present invention is further configured as follows: the bobbin storage rack includes an inclined plate, a pair of fixed hooks fixed to the front end of the inclined plate, a fixed baffle fixed to the side of the inclined plate close to the guide rod, and a flip baffle hinged to the side of the inclined plate close to the guide rod. The side of the inclined plate close to the guide rod and its front end are both inclined downward, the flip baffle is located at the front end of the fixed baffle, and the two are flush with each other, and a return torsion spring is installed at the hinge of the flip baffle and the inclined plate.

[0019] By adopting the above technical solution, not only can the wire bobbins be stored safely, but the wire bobbin clamping device can also be effectively cooperated with to safely clamp and take away the empty wire bobbins above it.

[0020] The present invention is further configured as follows: a discharge guide plate is fixedly and obliquely disposed on the winding machine body above the sliding frame, and the lower end of the discharge guide plate is located above one side of the belt conveyor.

[0021] By adopting the above technical solution, not only can the fully loaded bobbin be guided to the belt conveyor, but the fully loaded bobbin can also be prevented from falling into the gaps between components such as the sliding frame, the automatic wire pulling device and the automatic wire cutting device.

[0022] The beneficial effects of the present invention are:

[0023] 1. Through the structures such as the bobbin lifting platform, rotating shaft and bobbin clamping device in the automatic bobbin changing mechanism, not only can automatic and efficient bobbin changing be achieved above a single bobbin winder, but also in conjunction with the sliding frame, automatic wire pulling device and automatic wire cutting device, the yarn connecting the bobbin winder and the fully loaded bobbin can be automatically cut off, and the cut thread end can be pulled above the groove drum to connect the thread of the bobbin winder to the empty bobbin, thereby effectively reducing manual intervention and operation of the automatic bobbin winder and effectively improving the working efficiency of the automatic bobbin winder.

[0024] 2. Through the connection structure of the sliding shaft, clamping arm 1, clamping arm 2 and other components in the bobbin clamping device, not only can the rotating shaft and the rotating device be used to automatically unload the fully loaded bobbin and load the empty bobbin, but the clamping slider 1 on the clamping arm 1 and the clamping slider 2 on the clamping arm 2 can also automatically release the winding space required for the bobbin when the winder is working, so as to clamp and fix the empty bobbin while ensuring that the winder can safely wind the bobbin.

[0025] 3. Through the connection structure of the sliding plate 1, sliding plate 2 and the wire clamping plate in the automatic wire pulling device, not only can the wire clamping slider and sliding plate 1 stably bind and clamp the yarn connecting the winder and the fully loaded bobbin by driving the sliding frame only by driving the cylinder 1, but the cutter in the automatic wire cutting device can also quickly cut off the upper part of the yarn after the wire clamping slider clamps the yarn to a certain extent, so as to help the bobbin clamping device quickly unload the fully loaded bobbin, thereby improving the bobbin changing efficiency of the automatic bobbin changing mechanism.

[0026] 4. Through the connection structure of the locking plate, unlocking rod and spring four components in the locking assembly, not only can the relative position between the sliding plate 1 and the wire clamping plate be quickly locked and unlocked when necessary to ensure that the automatic wire pulling device effectively pulls the broken wire to the back of the groove drum, but the locking assembly can also be indirectly controlled to lock and unlock the sliding plate 1 by driving the sliding frame to slide by driving the cylinder 1, thereby eliminating the control equipment of the locking assembly and effectively reducing the energy consumption and manufacturing cost of the automatic drum changing mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0029] Figure 2 It is a schematic diagram of the top structure of the winding machine body of the present invention;

[0030] Figure 3 It is a schematic structural diagram of the bobbin clamping device of the present invention;

[0031] Figure 4 This is a working state diagram of the bobbin clamping device of the present invention clamping an empty bobbin on a bobbin storage rack;

[0032] Figure 5 yes Figure 4 A magnified view of point A;

[0033] Figure 6 It is a structural schematic diagram of the automatic wire drawing device of the present invention;

[0034] Figure 7 This is a schematic diagram of the connection relationship between the locking assembly structure, the wire clamping plate and the wire clamping slider of the present invention;

[0035] Figure 8 yes Figure 7 Enlarged view of point B;

[0036] In the figure, 1. bobbin winding machine body; 2. grooved drum; 3. belt conveyor; 4. guide rod 1; 41. bobbin lifting platform; 5. rotating shaft; 6. bobbin clamping device; 61. clamping arm 1; 611. slide 1; 62. clamping slide 1; 621. plug 1; 63. spring 1; 64. through hole; 641. keyway; 65. sliding shaft; 651. flat key; 66. clamping arm 2; 661. slide 2; 67. clamping slide 2; 671. plug 2; 68. spring 2; 69. sliding assembly; 691. driving cylinder 2; 692. connecting cylinder; 693. connecting column; 694. limiting ring; 7. rotating device; 71. worm gear; 72. servo motor; 73. worm; 74. motor bracket; 8. sliding frame; 9. automatic wire pulling device; 91. sliding plate 1; 92. Guide rod two; 93. Sliding plate two; 94. Guide rod three; 95. Limit baffle; 96. Thread clamping plate; 961. Long slide hole; 962. Slide groove three; 963. Thread clamping slider; 964. Spring three; 97. Connecting rod two; 98. Spring four; 99. Locking assembly; 991. Slide groove four; 992. Locking plate; 992a. Chamfer one; 992b. Triangular groove; 993. Spring five; 994. Unlocking lever; 994a. Chamfer two; 995. Unlocking support plate; 10. Automatic thread trimming device; 101. Cutter; 102. Slotting; 11. Driving cylinder one; 12. Connecting rod one; 13. Bobbin storage rack; 131. Inclined plate; 132. Fixed stop hook; 133. Fixed baffle; 134. Flip baffle; 135. Reset torsion spring; 14. Discharge guide plate. DETAILED DESCRIPTION

[0037] The technical solutions of the present invention will be described clearly and completely below with reference to specific embodiments. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0038] Embodiment: An automatic bobbin changing mechanism of a bobbin winder, such as Figure 1-3As shown, it includes a winding machine body 1, a groove drum 2 for evenly winding the yarn onto the bobbin is rotatably provided on the top of the winding machine body 1, a belt conveyor 3 for conveying the wound yarn bobbin is provided at the rear of the winding machine, a pair of vertical guide rods 4 are fixedly provided on the top of the groove drum 2 of the winding machine body 1, a bobbin lifting platform 41 is slidably provided on the two guide rods 4, a rotating shaft 5 parallel to the groove drum 2 is rotatably provided on the bobbin lifting platform 41, a bobbin clamping device 6 is provided on the rotating shaft 5, and a rotary shaft for driving the rotating shaft 5 to rotate is provided on the bobbin lifting platform 41. Rotating device 7, a U-shaped sliding frame 8 is also slidably provided on the top of the winder body 1, the sliding frame 8 is located between the rotating shaft 5 and the groove drum 2 and slides horizontally, and the front end of the sliding frame 8 is provided with an automatic wire pulling device 9 and an automatic wire cutting device 10, the winder is located behind the sliding frame 8 and is fixedly installed with a driving cylinder 11 for driving it to slide, the sliding frame 8 and the bobbin lifting platform 41 are jointly hingedly connected with a connecting rod 12, and a bobbin storage rack 13 is fixedly provided on the top of the guide rod 1, and the bobbin storage rack 13 is located within the clamping range of the bobbin clamping device 6.

[0039] When the bobbin is to be replaced, the cylinder 11 is first driven to drive the sliding frame 8 to move toward the groove drum 2 of the bobbin winder. Since the two ends of the connecting rod 12 are respectively hingedly connected to the sliding frame 8 and the bobbin lifting platform 41, the bobbin lifting platform 41 will be pushed to lift the rotating shaft 5 and the bobbin clamping device 6 upward during the movement of the sliding frame 8, so as to move the fully loaded bobbin away from the groove drum 2 at the top of the bobbin winder. When the bobbin lifting platform 41 is lifted to a certain height and the sliding frame 8 moves between the groove drum 2 and the rotating shaft 5, the rotating device 7 on the lifting platform will drive the rotating shaft 5 to rotate counterclockwise by a certain angle, so that the fully loaded bobbin is flipped over to the belt conveyor 3 behind the bobbin winder together with the bobbin clamping device 6. At the same time, the automatic thread cutting device 10 at the front end of the sliding frame 8 will cut the yarn between the bobbin winder and the fully loaded bobbin, and then the bobbin clamping device 6 will release the fully loaded bobbin, so that the fully loaded bobbin naturally falls onto the belt conveyor 3 After the bobbin lifting platform 41 rises to a certain height again, the rotating device 7 will drive the rotating shaft 5 to rotate counterclockwise again, so that the bobbin clamping device 6 takes the empty bobbin out of the bobbin storage rack 13 and rotates it to the top of the groove drum 2, and finally drives the piston rod of the cylinder 11 to pull the sliding frame 8 back to the initial position, and the bobbin lifting platform 41 will move downward under the action of the connecting rod 12, and make the bottom of the empty bobbin contact with the upper surface of the groove drum 2. At the same time, the automatic wire pulling assembly at the front end of the sliding frame 8 will pull the cut wire from the front of the groove drum 2 to the back of the groove drum 2, so that the empty bobbin and the groove drum 2 just clamp the wire to ensure that the wire contacts the barrel of the empty bobbin, thereby facilitating the subsequent winding work. Among them, the winding machine body 1 is located above the sliding frame 8, the automatic wire pulling device 9 and the automatic wire cutting device 10, and the driving cylinder 11, and a discharge guide plate 14 is fixedly arranged at an angle. The lower end of the discharge guide plate 14 is located above one side of the belt conveyor 3. It can not only guide the fully loaded bobbin to the belt conveyor 3, but also prevent the fully loaded bobbin from falling into the gaps between components such as the sliding frame 8, the automatic wire pulling device 9 and the automatic wire cutting device 10.

[0040] like Figure 2 、 Figure 3As shown, the bobbin clamping device 6 includes a clamping arm 1 61 fixed on the rotating shaft 5 and located at one end of the groove drum 2, a through hole 64 opened in the center of the rotating shaft 5 and passing through both ends, a sliding shaft 65 sliding through the through hole 64, a clamping arm 2 66 fixed to the front end of the sliding shaft 65 and located at the other end of the groove drum 2, a sliding assembly 69 for driving the sliding shaft 65 to slide, a slide groove 1 611 opened on the side of the clamping arm 1 61 facing the clamping arm 2 66, a slide groove 2 661 opened on the side of the clamping arm 2 66 facing the clamping arm 1 61, a clamping slider 1 62 and a clamping slider 2 67 sliding in the slide groove 1 611 and the slide groove 2 661 respectively, and fixedly arranged on The block 1 621 and the block 2 671 on the clamping slider 1 62 and the clamping slider 2 67, the spring 1 63 and the spring 2 68 are respectively installed in the slide groove 1 611 and the slide groove 2 661, the clamping slider 1 62 and the clamping slider 2 67 are parallel to each other, the block 1 621 and the block 2 671 can be respectively inserted into the two ends of the wire drum, the side wall of the sliding shaft 65 is fixedly provided with a flat key 651, the rotating shaft 5 is located in the through hole 64 and is provided with a key groove 641 for engaging the flat key 651, the two ends of the spring 1 63 are respectively connected to the slide groove 1 611 and the top end of the clamping slider 1 62, and the two ends of the spring 2 68 are respectively connected to the slide groove 2 661 and the top end of the clamping slider 2 67. By adopting the above technical solution, when the bobbin clamping device 6 releases the fully loaded bobbin, the sliding assembly 69 will first drive the sliding shaft 65 forward to pass through the front of the through hole 64 of the rotating shaft 5, so that the clamping arm 2 66 at the front end of the sliding shaft 65 is away from the clamping arm 1 61, and at the same time, the plug 2 671 on the clamping arm 2 66 will withdraw from one end of the fully loaded bobbin, so that the one end of the fully loaded bobbin loses the support of the plug 2 671. Since the unsupported end of the fully loaded bobbin is facing downward at this time, the fully loaded bobbin will naturally fall onto the belt conveyor 3 under the action of gravity; when the bobbin clamping device 6 clamps and fixes the empty bobbin First, the sliding assembly 69 will reversely drive the sliding shaft 65 to pass through the rear of the through hole 64 of the rotating shaft 5, so that the clamping arm 2 66 at the front end of the sliding shaft 65 is close to the clamping arm 1 61. At the same time, the plug 2 671 on the clamping arm 2 66 will extend into one end of the empty wire bobbin and push the other end of the empty wire bobbin to approach and insert the plug 1 621 on the clamping arm 1 61, so that the two ends of the empty wire bobbin are respectively supported and positioned by the plug 1 621 and the plug 2 671. Finally, with the lifting and lowering of the wire bobbin lifting platform 41 and the rotation of the rotating shaft 5, the empty wire bobbin can be taken out of the wire bobbin storage rack 13 and placed above the groove drum 2.Among them, since the surface thickness of the empty bobbin will continue to increase during the winding process, the clamping slider 1 62 on the clamping arm 1 61 and the clamping slider 2 67 on the clamping arm 2 66 will slide upward in the slide groove 1 611 and the slide groove 2 661 respectively, thereby giving the empty bobbin a certain amount of rising space, allowing the yarn to be smoothly wound onto the empty bobbin. At the same time, the spring 1 63 in the slide groove 1 611 and the spring 2 68 in the slide groove 2 661 will be compressed and deformed in this process, and at the same time give the clamping slider 1 62 and the clamping slider 2 67 a certain reaction force, thereby maintaining the mutual contact between the empty bobbin and the groove drum 2, so that the groove drum 2 can effectively drive the empty bobbin to rotate quickly to wind the yarn.

[0041] like Figure 3 As shown, the rotating device 7 includes a worm gear 71 fixed on the rotating shaft 5, a servo motor 72 fixedly mounted on the bobbin lifting platform 41, and a worm 73 fixed to the output end of the servo motor 72 and engaged with the transmission worm gear 71. The worm gear 71 and the clamping arm 61 are respectively located on both sides of the bobbin lifting platform 41. A motor bracket 74 for mounting the servo motor 72 is fixedly provided on the bobbin lifting platform 41. By adopting the above technical solution, when it is necessary to drive the rotating shaft 5 to rotate, the servo motor 72 will first drive the worm gear 73 to rotate, then the worm gear 73 will engage with the transmission worm gear 71, and finally the worm gear 71 will drive the rotating shaft 5 and the clamping arm 61 to rotate. Since the side wall of the sliding shaft 65 is fixedly provided with a flat key 651, and the rotating shaft 5 is provided with a keyway 641 in the through hole 64 for engaging the flat key 651, the sliding shaft 65 and the clamping arm 66 will also rotate together with the rotating shaft 5, thereby driving the bobbin clamping device 6 to rotate. The sliding assembly 69 includes a driving cylinder 2 691 fixed on the lifting platform, a connecting tube 692 fixed to the front end of the piston rod of the driving cylinder 2 691, a connecting column 693 fixed to one end of the sliding shaft 65 and extending into the connecting tube 692, and a limiting ring 694 fixed to the opening of the connecting tube 692 and limiting the rotation of the connecting column 693 inside it. The inner diameter of the connecting tube 692 is consistent with the outer diameter of the connecting column 693, and both are larger than the outer diameter of the sliding shaft 65. The inner diameter of the limiting ring 694 is consistent with the outer diameter of the sliding shaft 65. By adopting the above technical solution, not only can the driving cylinder 2 691 be used to drive the sliding shaft 65 to slide through the through hole 64 of the rotating shaft 5, but its connecting column 693, connecting tube 692 and limiting ring 694 form a rotating connection structure, and it can also prevent the driving cylinder 2 691 from affecting the normal rotation of the sliding shaft 65.

[0042] like Figure 6 、 Figure 7The automatic wire pulling device 9 includes a sliding plate 91 fixed to the front end of the sliding frame 8, a pair of guide rods 92 sliding through the rear end of the sliding frame 8, a sliding plate 93 fixedly connected to the front ends of the two guide rods 92 and parallel to the sliding plate 91, a limit baffle 95 fixed to the top of the winding machine and limiting the moving distance of the sliding plate 93, a pair of clamping plates 96 vertically slidably connected to the front end of the sliding plate 93, a long sliding hole 961 provided on the clamping plate 96 and for the sliding plate 91 to pass through, a sliding groove 962 provided on the opposite side of the clamping plate 96, a clamping slider 963 slidingly retracted in the sliding groove 962, a plurality of springs 964 arranged between the bottom of the sliding groove 962 and the clamping slider 963, a pair of springs 964 and a pair of springs 964 and a spring 964 arranged between the bottom of the sliding groove 962 and the clamping slider 963, ... The other end is hingedly connected to the connecting rod 2 97 of the two clamping plates 96, and is sleeved on the guide rod 2 92 and has both ends respectively connected to the sliding plate 2 93 and the spring 4 98 of the rear end of the sliding frame 8. The width of the sliding plate 1 91 is smaller than the length of the clamping slider 963, and the sliding plate 1 91 is close to the end of the clamping plate 96 away from the sliding plate 2 93. A pair of guide rods 3 94 parallel to the sliding plate 1 91 is fixed on the sliding plate 2 93, and the two guide rods 3 94 slide vertically through the two clamping plates 96 respectively, and the slide groove 3 962 is located parallel to the upper part of the long sliding hole 961. The clamping plate 96 is located below the long sliding hole 961 and is provided with a locking component 99 for locking the sliding plate 1 91 to slide, and the locking component 99 is located next to the end of the long sliding hole 961 close to the sliding plate 1 91.

[0043] By adopting the above technical solution, when the driving cylinder 11 drives the sliding frame 8 to approach the groove drum 2, first the sliding plate 1 91 and the sliding plate 2 93 will move forward together with the sliding frame 8. After the sliding plate 2 93 is blocked by the limit baffle 95, since the sliding frame 8 continues to move forward at this time, the sliding frame 8 will continue to move toward the direction of approaching the sliding plate 2 93 and compress the spring 4 98 between the two. At the same time, the sliding plate 1 91 will move parallel to the direction away from the sliding plate 2 93. Because one end of the two connecting rods 2 97 is hinged to the middle part of the sliding plate 1 91, and the other end is hinged to the two sliding clamping plates 96 on the sliding plate 2 93, when the sliding plate 1 91 is away from the sliding plate 2 93 During the process, the two connecting rods 97 will pull the two clamping plates 96 closer to each other, and before that, the sliding frame 8 has moved the sliding plate 2 93 and the clamping plate 96 to the back and both sides of the yarn respectively. Therefore, when the sliding plate 1 91 moves forward and the two clamping plates 96 approach each other, the yarn will be driven to the middle of the sliding plate 1 91 and at the same time clamped by the clamping sliders 963 on the two clamping plates 96. Finally, the locking component 99 in the long sliding hole 961 of the clamping plate 96 will lock the sliding plate 1 91 in this state on the clamping plate 96, and then when the driving cylinder 11 drives the sliding frame 8 to return, the clamping slider 963 will keep the yarn clamped and fixed, thereby achieving the effect of automatic thread pulling. When the empty bobbin is replaced on the grooved drum 2, the locking assembly 99 immediately releases the lock on the sliding plate 1 91. The spring 4 98 between the sliding frame 8 and the sliding plate 2 93 quickly restores the distance between the sliding plates 1 91 and 2 93, releasing the yarn clamping slider 963 from its restraint, thereby ensuring smooth yarn connection to the empty bobbin. The pair of guide rods 3 94 on the sliding plate 2 93 ensures that the clamping plate 96 slides stably on the sliding plate 2 93.

[0044] like Figure 6-8As shown, the locking assembly 99 includes a slide groove 4 991 opened at the bottom of the long slide hole 961, a locking plate 992 that slides and retracts in the slide groove 4 991, a spring 5 993 fixed between the bottom of the slide groove 4 991 and the lower end of the locking plate 992, an unlocking rod 994 that slides vertically from one end of the clamping plate 96 and passes into the slide groove 4 991, and an unlocking support plate 995 fixed to the top of the winder and located in front of the driving cylinder 11. The end of the locking plate 992 extending out of the slide groove 4 991 is provided with a chamfer 1 992a, and the inclined surface of the chamfer 1 992a faces the sliding plate 2 93. The side of the locking plate 992 is provided with a triangular groove 992b, and the inclined surface of the triangular groove 992b is parallel to the chamfer 1 992a. The end of the unlocking rod 994 extending into the slide groove 4 991 is provided with a chamfer 2 994a that is parallel to and contacts the inclined surface of the triangular groove 992b. By adopting the above technical solution, when the sliding plate 1 91 passes through the sliding groove 4 991 at the bottom of the long sliding hole 961, the locking plate 992 will immediately extend from the bottom of the sliding groove 4 991 under the action of the spring 5 993, and lock the sliding plate 1 91 between the locking plate 992 and the front end of the long sliding hole 961, so as to ensure that when the driving cylinder drives the sliding frame 8 to return, the thread clamping slider 963 is kept fixed to the yarn, and when the driving cylinder 11 pulls the sliding frame 8 back to the initial position, not only the yarn is clamped, but also the yarn is fixed. The bobbin lifting platform 41 places the empty bobbin on the grooved drum 2, and the unlocking lever 994 extending from the rear end of the wire clamping plate 96 is pushed into the fourth chute 991 by the unlocking support plate 995. Because the locking plate 992 has a triangular groove 992b on its side, and the end of the unlocking lever 994 extending into the fourth chute 991 has a chamfered corner 994a parallel to the inclined surface of the triangular groove 992b, the unlocking lever 994 pulls the locking plate 992 back into the fourth chute 991, thereby releasing the lock on the first sliding plate 91. The chamfered corner 992a at the upper end of the locking plate 992 ensures that the first sliding plate 91 can only pass through the fourth chute 991 to the front end of the long sliding hole 961 in one direction.

[0045] like Figure 6 、 Figure 7As shown, the automatic thread trimming device 10 includes a cutter 101 fixed to one side of a wire clamping plate 96, and a cutting groove 102 opened on the other wire clamping plate 96 for the front end of the cutter 101 to extend into. The cutter 101 and the cutting groove 102 are respectively arranged on opposite sides of the wire clamping plate 96 and are located above the third slide groove 962. The front end of the cutter 101 does not exceed the longest width of the wire clamping slider 963 sliding and retracting out of the third slide groove 962. By adopting the above technical solution, when the clamping slider 963 clamps the yarn, the two clamping plates 96 will move closer together, so that the two clamping sliders 963 retreat into the chute 3 962 respectively, and continuously compress the spring 3 964 between the bottom of the chute 3 962 and the clamping slider 963, and then the cutter 101 located above the chute 3 962 will cooperate with the cutting groove 102 in this process to cut off the unclamped part above the yarn, so that the bobbin clamping device 6 can release the full bobbin while continuing to clamp and fix the cut lower part of the yarn, and cooperate with the automatic wire pulling device 9 to connect the yarn to the empty bobbin. Among them, since the front end of the cutter 101 does not exceed the longest width of the clamping slider 963 sliding out of the chute 3 962, the cutter 101 will cut off the upper part of the yarn only after the clamping slider 963 clamps and fixes the lower part of the yarn, thereby ensuring that the automatic wire pulling device 9 can safely and effectively pull the cut yarn to the back of the groove drum 2.

[0046] like Figure 4 、 Figure 5 As shown, the bobbin storage rack 13 includes a slanted plate 131, a pair of fixed stop hooks 132 fixed to the front end of the slanted plate 131, a fixed stop plate 133 fixed to the side of the slanted plate 131 near the guide rod 4, and a flip stop plate 134 hinged to the side of the slanted plate 131 near the guide rod 4. The side of the slanted plate 131 near the guide rod 4 and its front end are both tilted downward. The flip stop plate 134 is located at the front end of the fixed stop plate 133 and the two are flush with each other. A return torsion spring 135 is installed at the hinge between the flip stop plate 134 and the slanted plate 131. By adopting the above technical solution, not only can bobbins be safely stored, but the bobbin clamping device 6 can also be effectively used to safely clamp and carry away empty bobbins above it.

Claims

1. An automatic bobbin changing mechanism for a winding machine, comprising a winding machine body (1), a grooved drum (2) rotatably provided on the top of the winding machine body (1) for evenly winding the spun yarn onto a bobbin, a belt conveyor (3) for conveying the wound yarn bobbins provided at the rear of the winding machine, characterized in that: The winding machine body (1) is located on the top of the groove drum (2) and is fixedly provided with a pair of vertical guide rods (4). A bobbin lifting platform (41) is slidably provided on the two guide rods (4). A rotating shaft (5) parallel to the groove drum (2) is rotatably provided on the bobbin lifting platform (41). A bobbin clamping device (6) is provided on the rotating shaft (5). A rotating device (7) for driving the rotating shaft (5) to rotate is provided on the bobbin lifting platform (41). A U-shaped sliding frame (8) is also slidably provided on the top of the winding machine body (1). The sliding frame (8) is located between the rotating shaft (5) and the groove drum (2) and slides horizontally, and the front end of the sliding frame (8) is provided with an automatic wire pulling device (9) and an automatic wire cutting device (10), the bobbin winder is located behind the sliding frame (8) and is fixedly installed with a driving cylinder (11) for driving the bobbin to slide, the sliding frame (8) and the bobbin lifting platform (41) are hingedly connected with a connecting rod (12), the top end of the guide rod (4) is fixedly provided with a bobbin storage rack (13), and the bobbin storage rack (13) is located within the clamping range of the bobbin clamping device (6).

2. The automatic bobbin changing mechanism of a bobbin winder according to claim 1, characterized in that: The bobbin clamping device (6) comprises a clamping arm (61) fixed on the rotating shaft (5) and located at one end of the groove drum (2), a through hole (64) opened at the center of the rotating shaft (5) and passing through both ends, a sliding shaft (65) sliding through the through hole (64), a clamping arm (66) fixed at the front end of the sliding shaft (65) and located at the other end of the groove drum (2), a sliding assembly (69) driving the sliding shaft (65) to slide, a sliding groove (611) opened on the side of the clamping arm (61) facing the clamping arm (66), a sliding groove (661) opened on the side of the clamping arm (66) facing the clamping arm (61), a clamping slider (62) and a clamping slider (67) sliding in the sliding groove (611) and the sliding groove (661), respectively, and a clamping slider (67) fixed on the clamping slider (62) and the clamping slider (67) respectively. ) and the plug block 1 (621) and the plug block 2 (671) on the clamping slider 2 (67), the spring 1 (63) and the spring 2 (68) respectively installed in the slide groove 1 (611) and the slide groove 2 (661), the clamping slider 1 (62) and the clamping slider 2 (67) are parallel to each other, the plug block 1 (621) and the plug block 2 (671) can be respectively inserted into the two ends of the wire drum, the side wall of the sliding shaft (65) is fixedly provided with a flat key (651), the rotating shaft (5) is located in the through hole (64) and is provided with a keyway (641) for fitting the flat key (651), the two ends of the spring 1 (63) are respectively connected to the top of the slide groove 1 (611) and the clamping slider 1 (62), and the two ends of the spring 2 (68) are respectively connected to the top of the slide groove 2 (661) and the clamping slider 2 (67).

3. The automatic bobbin changing mechanism of a bobbin winder according to claim 2, characterized in that: The rotating device (7) includes a worm gear (71) fixed on the rotating shaft (5), a servo motor (72) fixedly mounted on the bobbin lifting platform (41), and a worm (73) fixed to the output end of the servo motor (72) and meshing with the transmission worm gear (71). The worm gear (71) and the clamping arm (61) are respectively located on both sides of the bobbin lifting platform (41). A motor bracket (74) for mounting the servo motor (72) is fixedly provided on the bobbin lifting platform (41).

4. The automatic bobbin changing mechanism of a bobbin winder according to claim 2, characterized in that: The sliding assembly (69) includes a driving cylinder 2 (691) fixed on the lifting platform, a connecting tube (692) fixed to the front end of the piston rod of the driving cylinder 2 (691), a connecting column (693) fixed to one end of the sliding shaft (65) and extending into the connecting tube (692), and a limiting ring (694) fixed to the opening of the connecting tube (692) and limiting the rotation of the connecting column (693) inside the connecting tube. The inner diameter of the connecting tube (692) is consistent with the outer diameter of the connecting column (693), and both are larger than the outer diameter of the sliding shaft (65). The inner diameter of the limiting ring (694) is consistent with the outer diameter of the sliding shaft (65).

5. The automatic bobbin changing mechanism of a bobbin winder according to claim 3, characterized in that: The automatic wire drawing device (9) comprises a sliding plate (91) fixed to the front end of the sliding frame (8), a pair of guide rods (92) sliding through the rear end of the sliding frame (8), a sliding plate (93) fixedly connected to the front ends of the two guide rods (92) and parallel to the sliding plate (91), a limit baffle (95) fixed to the top of the winding machine and limiting the moving distance of the sliding plate (93), a pair of clamping plates (96) vertically slidably connected to the front ends of the sliding plate (93), a long sliding hole (961) provided on the clamping plate (96) and for the sliding plate (91) to pass through, a sliding groove (962) provided on the opposite side of the clamping plate (96), a clamping slider (963) slidingly retracted in the sliding groove (962), a plurality of springs (964) provided between the bottom of the sliding groove (962) and the clamping slider (963), a pair of springs (965) hinged at one end to the middle of the sliding plate (91) and hinged at the other end to the clamping slider (963), and a pair of springs (966) hinged at one end to the middle of the sliding plate (91) and hinged at the other end to the clamping slider (963). The connecting rod 2 (97) of the two clamping plates (96) and the spring 4 (98) are respectively mounted on the guide rod 2 (92) and connected to the sliding plate 2 (93) and the rear end of the sliding frame (8) at both ends. The width of the sliding plate 1 (91) is smaller than the length of the clamping slider (963), and the sliding plate 1 (91) is close to the end of the clamping plate (96) away from the sliding plate 2 (93). A pair of guide rods 3 (94) parallel to the sliding plate 1 (91) are fixed on the sliding plate 2 (93), and the two guide rods 3 (94) slide vertically through the two clamping plates (96), and the sliding groove 3 (962) is located above the long sliding hole (961) in parallel. The clamping plate (96) is located below the long sliding hole (961) and is provided with a locking component (99) for locking the sliding plate 1 (91) to slide, and the locking component (99) is located next to the end of the long sliding hole (961) close to the sliding plate 1 (91).

6. The automatic bobbin changing mechanism of a bobbin winder according to claim 5, characterized in that: The locking assembly (99) includes a slide groove (991) provided at the bottom of the long slide hole (961), a locking plate (992) slidingly extending and retracting in the slide groove (991), a spring (993) fixed between the bottom of the slide groove (991) and the lower end of the locking plate (992), an unlocking rod (994) vertically sliding from one end of the clamping plate (96) into the slide groove (991), and an unlocking support plate (995) fixed at the top of the winding machine and located in front of the driving cylinder (11). ), the locking plate (992) extending out of the sliding groove four (991) is provided with a chamfer one (992a) at one end, and the inclined surface of the chamfer one (992a) faces the sliding plate two (93), the locking plate (992) is provided with a triangular groove (992b) on the side, and the inclined surface of the triangular groove (992b) is parallel to the chamfer one (992a), and the unlocking rod (994) extending into the sliding groove four (991) is provided with a chamfer two (994a) parallel to the inclined surface of the triangular groove (992b).

7. The automatic bobbin changing mechanism of a bobbin winder according to claim 5, characterized in that: The automatic thread trimming device (10) includes a cutter (101) fixed to one side of a thread clamping plate (96), and a cutting groove (102) provided on the other thread clamping plate (96) for the front end of the cutter (101) to extend into. The cutter (101) and the cutting groove (102) are respectively arranged on opposite sides of the thread clamping plate (96) and are located above the long sliding hole (961). The front end of the cutter (101) does not exceed the longest width of the thread clamping slider (963) sliding out of the third sliding groove (962).

8. The automatic bobbin changing mechanism of a bobbin winder according to claim 1, characterized in that: The bobbin storage rack (13) comprises an inclined plate (131), a pair of fixed stop hooks (132) fixed to the front end of the inclined plate, a fixed stop plate (133) fixed to the side of the inclined plate (131) close to the guide rod (4), and a flip stop plate (134) hinged to the side of the inclined plate (131) close to the guide rod (4). The side of the inclined plate close to the guide rod (4) and the front end thereof are both inclined downward, the flip stop plate (134) is located at the front end of the fixed stop plate (133), and the two are flush with each other. A return torsion spring (135) is installed at the hinge of the flip stop plate (134) and the inclined plate (131).

9. The automatic bobbin changing mechanism of a bobbin winder according to claim 1, characterized in that: The winding machine body (1) is located above the sliding frame (8) and is provided with a discharging guide plate (14) which is fixedly arranged at an angle. The lower end of the discharging guide plate (14) is located above one side of the belt conveyor (3).

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