Machine head multi-telescopic-knife mechanism capable of automatically breaking yarns with auxiliary upper head changing mechanism

Abstract

The utility model relates to the technical field of glass fiber kiln wire drawing equipment, in particular to a machine head multi-telescopic-knife mechanism capable of assisting an upper head changing mechanism in automatic yarn breaking. The yarn breaking device comprises a machine head main shaft, a spring seat, a cylinder body seat, a yarn breaking blade, a blade guide end cover and a blade driving device. Yarn can be reversely cut off at the yarn breaking blade by controlling the speed difference change of the machine head with the telescopic yarn breaking blade and the V-shaped yarn winding sheet of the auxiliary upper replacement head, an automatic yarn cutting device does not need to be additionally arranged, the broken yarn is neat and neat, no wool yarn is splashed, the multi-air-cylinder telescopic yarn breaking blade is shrunk after the full-drum machine head is stopped in transposition during drum unloading, and the yarn breaking efficiency is improved. And the yarn roll and the sleeve paper cylinder can enter and exit without barriers.

Description

Technical Field

[0001] This application relates to the technical field of glass fiber furnace wire drawing equipment, and specifically relates to a multi-retractable knife mechanism for the head that can automatically cut off yarn with an auxiliary head-changing mechanism. Background Art

[0002] Please refer to the relevant prior patent application: An auxiliary head-changing winding mechanism for a wire drawing machine (Application Date: November 27, 2023; Authorization Publication Number: CN 222138960 U). The auxiliary head-changing winding mechanism for a wire drawing machine disclosed in this document can achieve unobstructed parallel transfer of yarn between the head and the V-shaped yarn winding piece through synchronous operation with the full bobbin head, so that the head-changing operation can be completed on the premise of keeping the yarn angle and linear velocity unchanged.

[0003] However, after the auxiliary head-changing winding mechanism for a wire drawing machine completes the head-changing operation for the auxiliary working head, it still needs to rely on manual labor or an additional automatic yarn cutting device to cut off the yarn cluster connection. It is necessary to develop an automatic yarn cutting mechanism that can be compactly integrated on the head of a wire drawing machine to further improve the automation level of the equipment. Summary of the Utility Model

[0004] In view of this, this application provides a multi-retractable knife mechanism for the head that can automatically cut off yarn with an auxiliary head-changing mechanism to cooperate with the auxiliary head-changing winding mechanism of a wire drawing machine to complete the automatic yarn cutting function.

[0005] The solution provided by this application to solve its technical problems is as follows:

[0006] A multi-retractable knife mechanism for the head that can automatically cut off yarn with an auxiliary head-changing mechanism, characterized in that it includes a spring seat, a cylinder block seat, a yarn cutting blade, and a blade driving device; a spring seat air hole is provided on the spring seat; a piston cavity and a cylinder block air hole are provided on the cylinder block seat; the spring seat air hole and the cylinder block air hole are communicated, and the cylinder block air hole penetrates to the piston cavity;

[0007] The blade driving device is arranged in the piston cavity, and the yarn cutting blade is arranged on the blade driving device and can make a telescopic movement under the action of the blade driving device;

[0008] The multi-retractable knife mechanism for the head that can automatically cut off yarn with an auxiliary head-changing mechanism further includes a blade guiding end cover, and a plurality of guiding grooves are provided on the blade guiding end cover; the yarn cutting blade can extend out of or retract into the guiding grooves under the action of the blade driving device.

[0009] Preferably, the spring seat and the cylinder block seat are both fastened to the head spindle of the wire drawing machine, and the blade guiding end cover is fastened to the spring seat and / or the cylinder block seat. Further preferably, the spring seat is provided with a main shaft assembly hole, a cylinder block assembly groove, and an end cover assembly groove; the main shaft assembly hole is used to assemble the spring seat to the head spindle of the wire drawing machine, the cylinder block seat is assembled in the cylinder block assembly groove and connected to the head spindle of the wire drawing machine through fasteners, and the blade guiding end cover is assembled in the end cover assembly groove.

[0010] Preferably, the blade driving device includes a piston rod, a piston cover, and a piston spring; the piston rod includes a piston part and a push rod part; the piston part, the push rod part, and the piston spring are arranged in the piston cavity, the piston cover is arranged at the opening of the piston cavity, the end of the push rod part extends out of the piston cover, and the piston spring can generate an elastic restoring force when compressed by the piston part; the yarn breaking blade is connected to the push rod part. Further preferably, spring grooves are provided on both the piston rod and the bottom of the piston cavity, and both ends of the piston spring are respectively arranged in the spring grooves.

[0011] Preferably, the yarn breaking blade includes a blade head part and a blade seat part, and the blade seat part is connected to the push rod part; the guiding groove includes a blade head groove and a blade seat groove; the blade head part is arranged in the blade head groove, and the blade seat part is arranged in the blade seat groove.

[0012] Preferably, the multi-retractable blade mechanism of the head that can automatically cut the yarn with the auxiliary head changing mechanism further includes a cover plate, and the cover plate is arranged on the cylinder block seat.

[0013] Preferably, the multi-retractable blade mechanism of the head that can automatically cut the yarn with the auxiliary head changing mechanism further includes a head spindle, and a main shaft air hole is provided on the head spindle, and the main shaft air hole communicates with the spring seat air hole.

[0014] Preferably, a retaining piece, a rotating cylinder, a tapered sleeve, and a tapered sleeve spring are further provided on the head spindle; the rotating cylinder is arranged on the head spindle and forms an assembly position with the head spindle, the tapered sleeve is arranged on the head spindle and is located in the assembly position, and the tapered sleeve spring is arranged between the spring seat and the tapered sleeve; the retaining piece includes a retaining piece body and a tapered cylinder part, and the tapered cylinder part is arranged in the assembly position and cooperates with the tapered sleeve; a tapered sleeve air path is further provided on the head spindle, and compressed air can push the tapered sleeve to perform an axial linear motion through the tapered sleeve air path.

[0015] Preferably, a positioning ring is further provided on the head spindle, the positioning ring is located in the assembly position, and a positioning ring air hole is provided on the positioning ring, and the positioning ring air hole communicates with the tapered sleeve air path.

[0016] A control method for the multi-retractable blade mechanism of the head that can automatically cut the yarn with the auxiliary head changing mechanism includes:

[0017] In the yarn breaking state, the compressed air is cut off, and the yarn breaking blade makes an extension movement under the action of the blade driving device, and at this time, the yarn is cut.

[0018] In the bobbin-changing state, compressed air is supplied. The yarn-breaking blade makes a retracting movement under the action of the blade driving device, and the yarn ball and the bobbin can enter and exit without obstruction.

[0019] Preferably, in the yarn-breaking state, the compressed air is cut off. The yarn-breaking blade extends out of the guide groove under the action of the blade driving device, and at this time, yarn breaking is performed.

[0020] In the bobbin-changing state, compressed air is supplied. The yarn-breaking blade retracts into the guide groove under the action of the blade driving device, and the yarn ball and the bobbin can enter and exit without obstruction.

[0021] Preferably, in the yarn-breaking state, while the yarn-breaking blade makes an extending movement, the expanding piece opens; in the bobbin-changing state, while the yarn-breaking blade makes a retracting movement, the expanding piece retracts.

[0022] Preferably, in the yarn-breaking state, while the yarn-breaking blade extends out of the guide groove, the expanding piece opens; in the bobbin-changing state, while the yarn-breaking blade retracts into the guide groove, the expanding piece retracts.

[0023] Beneficial technical effects:

[0024] The multi-retractable blade mechanism of the machine head provided by the present application can automatically break yarn with the auxiliary head-changing mechanism. When the machine head operates, the yarn-breaking blade extends out and rotates synchronously with the V-shaped yarn winding piece on the auxiliary head-changing winding mechanism of the wire drawing machine. When changing the head, the lower stop screw rod moves, and the yarn passes through the gap between the V-shaped yarn winding piece and the gap between the yarn-breaking blades. By controlling the change in the speed difference between the machine head with the retractable yarn-breaking blade and the V-shaped yarn winding piece of the auxiliary head-changing, the yarn is cut in the reverse direction at the yarn-breaking blade without the need for an additional automatic yarn-cutting device, and the yarn breaking is clean and there is no flying of fluff yarn. When unloading the bobbin, after the full bobbin machine head changes position and stops, the multi-cylinder retractable yarn-breaking blade automatically contracts, allowing the yarn ball and the paper bobbin to enter and exit without obstruction.

[0025] The technical solutions and technical effects of the present application will be introduced in detail below in combination with the description of the drawings and the specific embodiments. Description of the Drawings

[0026] Figure 1 : Front view of the wire drawing machine;

[0027] Figure 2 : Side view of the wire drawing machine;

[0028] Figure 3 : Figure 2 Sectional view B-B in ;

[0029] Figure 4 : Figure 2 Schematic view in the direction A in ;

[0030] Figure 5 : Figure 2 Enlarged view of the structure of the machine head main shaft part in (yarn-breaking state);

[0031] Figure 6 : Figure 2 Enlarged view of the structure of the main shaft part of the middle headstock (in the bobbin changing state);

[0032] Icon description:

[0033] 1 - Headstock; 2 - Auxiliary upper head-changing winding mechanism, 3 - Yarn laying mechanism, 4 - Lower stop screw rod, 5 - Pushing yarn stop screw rod mechanism, 6 - Servo motor, 7 - V-shaped yarn winding piece;

[0034] 10 - Spring seat, 20 - Cylinder block seat, 30 - Yarn breaking blade, 40 - Blade guiding end cover, 50 - Blade driving device, 60 - Main shaft of the headstock, 70 - Cover plate;

[0035] 110 - Main shaft assembly hole, 120 - Cylinder block assembly groove, 130 - End cover assembly groove, 140 - Air hole of the spring seat;

[0036] 210 - Piston chamber, 220 - Air hole of the cylinder block;

[0037] 310 - Knife head part, 320 - Knife seat part;

[0038] 410 - Guiding groove;

[0039] 4110 - Knife head groove, 4120 - Knife seat groove;

[0040] 510 - Piston rod, 520 - Piston cover, 530 - Piston spring;

[0041] 5110 - Piston part, 5120 - Push rod part;

[0042] 610 - Main shaft air hole, 620 - Expanding piece, 630 - Rotating cylinder, 640 - Bush, 650 - Bush spring, 660 - Assembly position, 670 - Air path of the bush, 680 - Positioning ring;

[0043] 6210 - Expanding piece body, 6220 - Tapered cylinder part. Detailed implementation manners

[0044] Please refer to Figures 1-6 , the multi-retractable knife mechanism of the headstock capable of automatically breaking yarn with the auxiliary upper head-changing mechanism disclosed in this application includes a spring seat 10, a cylinder block seat 20, a yarn breaking blade 30, a blade guiding end cover 40, a blade driving device 50, and a cover plate 70.

[0045] The spring seat 10 is provided with a main shaft assembly hole 110, a cylinder block assembly groove 120, an end cover assembly groove 130, and an air hole 140 of the spring seat; the cylinder block seat 20 is assembled in the cylinder block assembly groove 120, and the blade guiding end cover 40 is assembled in the end cover assembly groove 130.

[0046] The cylinder block base 20 is provided with a piston chamber 210 and a cylinder block air hole 220. The spring seat air hole 140 communicates with the cylinder block air hole 220, and the cylinder block air hole 220 penetrates through to the piston chamber 210.

[0047] The blade guiding end cover 40 is provided with a plurality of guiding grooves 410; the blade driving device 50 is arranged in the piston chamber 210, and the yarn breaking blade 30 is arranged in the guiding grooves 410 and can extend or retract from the guiding grooves 410 under the action of the blade driving device 50.

[0048] The blade driving device 50 includes a piston rod 510, a piston cover 520, and a piston spring 530; the piston rod 510 includes a piston portion 5110 and a push rod portion 5120; the piston portion 5110, the push rod portion 5120, and the piston spring 530 are all arranged in the piston chamber 210, and the piston cover 520 is arranged at the opening of the piston chamber 210. Spring grooves are provided on both the piston rod 510 and the bottom of the piston chamber 210, and both ends of the piston spring 530 are respectively arranged in the spring grooves.

[0049] The yarn breaking blade 30 includes a blade head portion 310 and a blade seat portion 320; the guiding groove 410 includes a blade head groove 4110 and a blade seat groove 4120; the blade head portion 310 is arranged in the blade head groove 4110, and the blade seat portion 320 is arranged in the blade seat groove 4120.

[0050] The end of the push rod portion 5120 extends out of the piston cover 520, and the blade seat portion 320 is connected to the push rod portion 5120. The piston spring 530 can generate an elastic restoring force when compressed by the piston portion 5110.

[0051] The cover plate 70 is arranged on the cylinder block base 20.

[0052] The above-mentioned multi-retractable blade mechanism of the machine head is used to be arranged on the main shaft 60 of the head of the wire drawing machine, and cooperate with the head-changing winding mechanism (application number: 2023115908704) on the wire drawing machine to complete the automatic yarn breaking work.

[0053] The spring seat 10 is assembled to the main shaft 60 of the head of the wire drawing machine through the main shaft assembly hole 110 and is pressed by the cylinder block base 20. The cylinder block base 20 is fixedly assembled to the main shaft 60 of the head through fasteners and is located in the cylinder block assembly groove 120. The blade guiding end cover 40 is fixedly assembled in the end cover assembly groove 130 through fasteners.

[0054] The main shaft 60 of the head is provided with a main shaft air hole 610, and the main shaft air hole 610 communicates with the spring seat air hole 140.

[0055] When compressed air is connected, the yarn breaking blade 30 retracts into the guiding groove 410 under the action of the piston rod 510. After the compressed air is disconnected, the yarn breaking blade 30 extends out of the guiding groove 410 under the action of the piston spring 530.

[0056] In another preferred embodiment of the present application, a flapper 620, a rotating cylinder 630, a tapered sleeve 640, a tapered sleeve spring 650, a tapered sleeve air passage 670, and a positioning ring 680 are further provided on the headstock main shaft 60.

[0057] The rotating cylinder 630 is arranged on the headstock main shaft 60 and an assembly position 660 is formed between the rotating cylinder 630 and the headstock main shaft 60. The tapered sleeve 640 is arranged on the headstock main shaft 60 and is located within the assembly position 660. The tapered sleeve spring 650 is arranged between the spring seat 10 and the tapered sleeve 640. The positioning ring 680 is located within the assembly position 660. The flapper 620 includes a flapper body 6210 and a tapered cylinder portion 6220. The tapered cylinder portion 6220 is arranged within the assembly position 660 and cooperates with the tapered sleeve 640.

[0058] The tapered sleeve 640 is provided with a tapered sleeve air passage 670, and the positioning ring 680 is provided with a positioning ring air hole. The tapered sleeve air passage 670 communicates with the positioning ring air hole.

[0059] Compressed air can push the tapered sleeve 640 to slide on the headstock main shaft 60 through the tapered sleeve air passage 670, and then the flapper 620 is opened or retracted by lifting and lowering the tapered cylinder portion 6220.

[0060] When the compressed air is connected, the flapper 620 is retracted under the action of the tapered sleeve 640. After the compressed air is disconnected, the flapper 620 is opened under the action of the tapered sleeve spring 650.

[0061] The control method corresponding to the above-mentioned headstock multi-retractable cutter mechanism that can automatically cut off the yarn with the auxiliary head-changing mechanism includes two working states:

[0062] Yarn cutting state: Cut off the compressed air. The yarn cutting blade 30 extends out of the guide groove 410 under the action of the blade driving device 50, and at this time, yarn cutting is performed; meanwhile, the flapper 620 is opened under the action of the tapered sleeve 640;

[0063] Bobbin changing state: Feed in compressed air. The yarn cutting blade 20 retracts into the guide groove 410 under the action of the blade driving device 50, and the yarn cake and the bobbin can enter and exit without obstruction; meanwhile, the flapper 620 is retracted under the action of the tapered sleeve spring 650.

[0064] Please refer to Figure 1 and Figure 2, when the machine head runs, the yarn cutting blade 30 extends out and rotates synchronously with the V-shaped yarn winding piece 7 (driven by the servo motor 6) on the auxiliary head-changing winding mechanism of the wire drawing machine. When changing the head, the lower stop screw rod 4 of the wire pushing stop screw rod mechanism 5 moves, and the yarn passes through the gap between the V-shaped yarn winding piece 7 and the gap between the yarn cutting blade 30. By controlling the change of the speed difference between the machine head 1 with the telescopic yarn cutting blade 30 and the V-shaped yarn winding piece 7 for auxiliary head-changing, the yarn is cut reversely at the yarn cutting blade 30. There is no need for an additional automatic yarn cutting device, and the yarn cutting is clean and there is no flying of fluff. When unloading the bobbin, after the full bobbin machine head 1 changes position and stops, the yarn cutting blade 30 will contract, and there is no obstacle for the yarn cake and the paper tube sleeve to enter and exit. The working machine head 1 performs normal wire drawing and winding with the assistance of the wire arranging mechanism 3.

[0065] The technical solutions and technical effects of this application have been elaborated in detail in combination with the specification drawings and specific embodiments. It should be noted that those skilled in the art can also develop other embodiments on this basis; any simple deformation and equivalent replacement that do not depart from the innovative concept of this application are covered by this application and belong to the protection scope of this patent.

Claims

1. The head multi-telescopic knife mechanism can automatically cut the yarn with the auxiliary upper head changing mechanism, which is characterized by: It comprises a spring seat (10), a cylinder seat (20), a yarn-breaking blade (30), and a blade driving device (50); The spring seat (10) is provided with a spring seat air hole (140); The cylinder base (20) is provided with a piston cavity (210) and a cylinder air hole (220); The spring seat air hole (140) and the cylinder body air hole (220) are in communication, and the cylinder body air hole (220) passes through to the piston chamber (210); The blade driving device (50) is arranged in the piston chamber (210), and the yarn breaking blade (30) is arranged on the blade driving device (50) and can perform telescopic movement under the action of the blade driving device (50); The machine head multi-retractable blade mechanism capable of automatically cutting yarn with the auxiliary upper head changing mechanism further comprises a blade guide end cover (40), wherein the blade guide end cover (40) is provided with a plurality of guide grooves (410); The yarn breaking blade (30) can extend out of or retract into the guide groove (410) under the action of the blade driving device (50).

2. The head multi-telescopic knife mechanism capable of automatically cutting yarn with the auxiliary upper head changing mechanism according to claim 1 is characterized in that: The spring seat (10) and the cylinder seat (20) are both fastened to the head spindle of the wire drawing machine, and the blade guide end cover (40) is fastened to the spring seat (10) and / or the cylinder seat (20).

3. The head multi-telescopic knife mechanism capable of automatically cutting yarn with the auxiliary upper head changing mechanism according to claim 2 is characterized in that: The spring seat (10) is provided with a main shaft assembly hole (110), a cylinder assembly groove (120), and an end cover assembly groove (130); The spindle assembly hole (110) is used to assemble the spring seat (10) onto the head spindle of the wire drawing machine; The cylinder seat (20) is assembled in the cylinder assembly groove (120) and connected to the head spindle of the wire drawing machine via fasteners, and the blade guide end cover (40) is assembled in the end cover assembly groove (130).

4. The head multi-telescopic knife mechanism capable of automatically cutting yarn with the auxiliary upper head changing mechanism according to claim 1, characterized in that: The blade driving device (50) comprises a piston rod (510), a piston cover (520), and a piston spring (530); The piston rod (510) comprises a piston portion (5110) and a push rod portion (5120); The piston portion (5110), the push rod portion (5120), and the piston spring (530) are arranged in the piston cavity (210); the piston cover (520) is arranged at the opening of the piston cavity (210); the end of the push rod portion (5120) extends out of the piston cover (520); and the piston spring (530) is capable of generating an elastic restoring force when compressed by the piston portion (5110); The yarn breaking blade (30) is connected to the push rod portion (5120).

5. The head multi-telescopic knife mechanism capable of automatically cutting yarn with the auxiliary upper head changing mechanism according to claim 4 is characterized in that: The yarn-breaking blade (30) comprises a blade head portion (310) and a blade seat portion (320), wherein the blade seat portion (320) is connected to the push rod portion (5120); The guide groove (410) comprises a tool head groove (4110) and a tool seat groove (4120); The cutter head portion (310) is arranged in the cutter head groove (4110), and the cutter seat portion (320) is arranged in the cutter seat groove (4120).

6. The head multi-telescopic knife mechanism capable of automatically cutting yarn with the auxiliary upper head changing mechanism according to claim 1 is characterized in that: The machine head multi-telescopic knife mechanism capable of automatically cutting yarn with the auxiliary upper head changing mechanism further comprises a cover plate (70), wherein the cover plate (70) is arranged on the cylinder body seat (20).

7. The head multi-telescopic knife mechanism capable of automatically cutting yarn with the auxiliary upper head changing mechanism according to any one of claims 1 to 6, characterized in that: The machine head multi-retractable knife mechanism capable of automatically cutting yarn with the auxiliary upper head changing mechanism also includes a machine head main shaft (60), the machine head main shaft (60) is provided with a main shaft air hole (610), and the main shaft air hole (610) is connected to the spring seat air hole (140); The machine head main shaft (60) is also provided with an expansion plate (620), a rotating cylinder (630), a cone sleeve (640), and a cone sleeve spring (650); The rotating cylinder (630) is arranged on the machine head main shaft (60) and forms an assembly position (660) with the machine head main shaft (60); the cone sleeve (640) is arranged on the machine head main shaft (60) and is located in the assembly position (660); and the cone sleeve spring (650) is arranged between the spring seat (10) and the cone sleeve (640); The expansion sheet (620) comprises an expansion sheet body (6210) and a conical cylinder portion (6220); the conical cylinder portion (6220) is arranged in the assembly position (660) and cooperates with the conical sleeve (640); A cone sleeve air path (670) is also provided on the machine head main shaft (60), and compressed air passing through the cone sleeve air path (670) can push the cone sleeve (640) to perform axial linear motion.

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