A blind rotation mechanism for a hosiery machine and a method for transferring and sewing the seams of socks

Abstract

A blind rotation mechanism for a sock knitting machine and a method for transferring and sewing the seams of socks, including knitting needles installed on a needle cylinder, a sock picking device, the sock picking device includes a main transfer needle disc, main transfer needles are installed on the main transfer needle disc, the center of the main transfer needle disc is connected with a main push rod, and needle grooves for mating with the main transfer needles are formed on the outer periphery of the main transfer needle disc; a push column is hermetically fitted on the outer periphery of the main push rod, a push ring disc is arranged at the top of the push column, and push grooves for mating with sock coils are arranged on the outer periphery of the push ring disc; the main push rod drives the push column to move through a motor or through the air pressure of a trachea with a hollow structure. The invention adopts a main push rod structure connected to the center of the main transfer needle disc to drive the push column to move, thereby realizing the function of pushing the push ring disc in combination with the main transfer needle relative to the sock coil.

Description

Technical Field

[0001] The present invention relates to a transfer and sewing device for socks on a sock knitting machine, and more particularly to a blind rotation mechanism for a sock knitting machine and a method for transferring and sewing the sock seams. Background Art

[0002] After the last round of knitting on a sock knitting machine or a circular knitting device, it is necessary to transfer the socks in the needle cylinder of the sock knitting machine or the circular knitting device to an additional processing device for seam sewing. However, in traditional picking and transferring, it is necessary to align the needle grooves of each picking and transferring needle or the needle grooves formed by the combined picking and transferring needles with the knitting needles on the needle cylinder, and pick and transfer the last round of coils of the sock or fabric onto the picking and transferring needles. Often, during the picking and transferring process, situations such as missed needles, loop hanging, and needle dropping occur due to the misalignment between the needle grooves of the picking and transferring needles and the knitting needles on the needle cylinder. After replacing the needle cylinder with different numbers of needles on the sock knitting machine or the circular knitting device, it is necessary to replace the transfer needle disc and the transfer needles in the picking device, which increases the time and accessory costs for the user.

[0003] Chinese Patent Application No. CN200980108882.0 discloses a mechanism for transferring coils from the knitting needles of a knitting machine to a sewing station, including a knitting machine, a main picking and transferring mechanism device, and a secondary picking and transferring mechanism device. A coil pushing disc is provided on the main picking and transferring mechanism device. Each transfer element at least partially clamps an outer surface of the needle hook of each knitting needle, and each transfer element includes the transfer end. When the needle tongue is closed to transfer the coil, the picking and transferring needle of the transfer end needs to be maintained between the body of the knitting needle and the needle hook. When picking and transferring, the secondary picking and transferring needle needs to move under the needle tongue of the knitting needle. The coil on the knitting needle is pushed into the secondary picking and transferring needle by the coil pushing disc on the main picking and transferring device, and then the needle groove of the secondary picking and transferring needle catches the knitting needle and moves it upward away from the knitting needle. This method will cause wear of the knitting needles and the secondary picking and transferring needles, and at the same time increase the phenomenon of missed needles, etc. Moreover, after replacing the needle cylinder, it is necessary to replace the needle disc and the secondary picking and transferring needles at the same time. Summary of the Invention

[0004] The present invention provides a blind rotation mechanism for a sock knitting machine and a method for transferring and sewing the sock seams, which do not require needle alignment, have reliable sock transfer, and strong adaptability to different needle cylinders.

[0005] A blind rotation mechanism for a sock knitting machine, comprising knitting needles mounted on a needle cylinder, and a sock picking device. The sock picking device includes a main transfer needle disc, on which main transfer needles are mounted. A main push rod is threadedly connected to the center of the main transfer needle disc, and needle grooves for mating with the main transfer needles are formed on the outer periphery of the main transfer needle disc. A push column is hermetically fitted around the main push rod. A push ring disc is provided at the top of the push column, and a push groove for mating with a sock coil is provided on the outer periphery of the push ring disc. The main push rod drives the push column to move by means of a motor or air pressure in a hollow air pipe. The diameter of the needle loop formed by the main transfer needle is smaller than the diameter of the needle loop formed by the knitting needle. At present, all sock transfer mechanisms on the market require the main transfer needle to be aligned with the knitting needle to achieve transfer, that is, the diameter of the needle loop formed by the main transfer needle must be equal to the diameter of the needle loop formed by the knitting needle to complete the transfer. Needle alignment transfer not only has a high technical difficulty, but also the main transfer needle disc must be replaced simultaneously after replacing the needle cylinder, resulting in high manufacturing costs. However, the technical solution of the present invention, in which the diameter of the needle loop formed by the main transfer needle is smaller than the diameter of the needle loop formed by the knitting needle, avoids the need for the main transfer needle to be aligned with the knitting needle. The main transfer needle directly pierces and picks up the sock, greatly reducing the manufacturing difficulty and improving the sock picking and transfer ability. According to the above structure, no needle grooves are provided on both the main transfer needle and the auxiliary transfer needle, reducing the manufacturing difficulty of the main transfer needle and the auxiliary transfer needle.

[0006] This structure of the main transfer needle disc provides thrust through the main push rod to drive the push ring disc to move outwards, realizing the pushing ability of the push ring disc for the sock. As a preferred power structure, the push column cooperates with the hollow main push rod, and a pressure chamber is formed between the push column and the main push rod. A pressure air pipe is connected in the middle of the main push rod, and the movement of the push column is controlled by the air pressure in the pressure air pipe.

[0007] A first guiding hole and a first spring hole are respectively formed on the main transfer needle disc; a second guiding hole and a second spring hole are respectively formed on the push column; a guiding column passes through the first guiding hole and the second guiding hole; a return spring is commonly hung in the first spring hole and the second spring hole, and the active reset performance of the push column is realized through the return spring, while the guiding column improves the movement accuracy of the push column.

[0008] The top of the main transfer needle disc is fixedly connected to a mounting plate through a screw. The mounting plate is fixedly connected to a first rotating arm. The first rotating arm is threadedly connected to a first screw through a lifting plate. The first screw is mounted on a first lifting motor. The first lifting motor is threadedly connected to a lifting pipe through a fastening screw on a first connecting plate. A flanging is provided at the bottom of the lifting pipe, and a secondary rotating arm is connected to the flanging. A first return spring and a limit pin are respectively provided between the secondary rotating arm and the first rotating arm. This driving structure realizes the technical performance of the first rotating arm moving up and down along the lifting pipe under the drive of the first lifting motor.

[0009] The lifting pipe is matched with a rotating pipe. One end of the rotating pipe is connected with a spiral gear. The spiral gear is connected with a second motor through a worm. The other end of the rotating pipe is connected with a second connecting plate through a second screw rod. The second connecting plate is connected with a third motor. The third motor is threadedly connected with a sub-rotating arm through a third screw rod. This structure integrates the movements of the sub-rotating arm and the first rotating arm, rotating and lifting together, achieving the compact performance of the structure.

[0010] An auxiliary sock picking device is provided on the outer periphery of the needle loop formed by the main transfer needle. The auxiliary sock picking device includes a needle loop formed by auxiliary transfer needles. The auxiliary transfer needles are installed on an auxiliary transfer needle disc. The auxiliary transfer needle disc is connected with a mounting base. An orbit fixing disc is installed on the upper side of the mounting base. An orbit movable disc is installed on the upper side of the orbit fixing disc. An inner ring is installed on the lower side of the orbit fixing disc. An orbit groove is formed on the orbit movable disc. The orbit groove is cooperatively connected with a sliding screw rod. The sliding screw rod is threadedly connected with a driving block. The driving block cooperates with the needle feet on the auxiliary transfer needles. A needle foot return spring is provided on the other side of the driving block for the needle feet. A cylinder push rod of a cylinder or a push rod controlled by an orbit driving motor is connected to the side of the orbit movable disc. The cylinder is installed on a connecting plate. The connecting plate is connected with the sub-rotating arm and the mounting base. This auxiliary sock picking device realizes the radial movement of the auxiliary transfer needles on the orbit movable disc under the control of the driving block under the drive of the cylinder, achieving the adjustment performance of the coil hole tension and position of the sock coil.

[0011] A sock transfer method for a sock knitting machine includes the following steps:

[0012] Step 1: The sock lifting cylinder in the upper needle cylinder of the sock knitting machine lifts the sock, and then the second motor drives the first rotating arm and the sub-rotating arm to move to the position above the same axis of the needle cylinder at the same time.

[0013] Step 2: The third motor drives the sock picking device and the auxiliary sock picking device to move downward simultaneously so that the main transfer needle penetrates into the sock coil inside the knitting needle coil. The knitting needle coil is the coil formed by the cooperation of the sock and the knitting needle.

[0014] Step 3: The sock lifting cylinder ejects the sock from the knitting needle and transfers it to the main transfer needle. Then the first lifting motor drives the lifting plate to rise. Under the action of the first return spring, the first rotating arm rises. Then the cylinder drives the cylinder push rod to make the orbit movable disc rotate. Further, the driving block connected to the sliding screw rod drives the auxiliary transfer needles to move back and forth. Finally, the tip of the auxiliary transfer needle corresponds to the same or different sock coils vertically with the main transfer needle. Then the main push rod drives the push column to move downward, that is, the push ring disc moves downward to push the sock coil completely into the auxiliary transfer needle, and then the push column moves upward to reset. While the push column moves upward to reset, the first lifting motor drives the first rotating arm to descend and reset, thereby realizing the clamping of the sock coil by the auxiliary transfer needle and the main transfer needle.

[0015] Step 4: Reset the sock tube top, and then rotate the first rotating arm and the secondary rotating arm to pick up and transfer the sock from the needle cylinder. This sock transfer method achieves the technical performance of blind rotation by piercing the main transfer needle into the sock coil inside the knitting needle coil, and the reliability of sock coil transfer is improved by the coil pushing disc cooperating with the main transfer needle.

[0016] A sock seaming method for a sock knitting machine, comprising the following steps:

[0017] Step 1: The sock picking device and the secondary sock picking device clamp the transferred sock and move it above the sock turning tube and the lower coil pusher of the sock sewing device. Then, the coil pushing disc moves downward to press against the sock, pushing the sock into the secondary transfer needle. Then, the first lifting motor drives the first rotating arm to rise, causing the main transfer needle to disengage from the secondary transfer needle. Then, under the action of the spring force, the coil pushing disc moves upward to reset.

[0018] Step 2: Drive the first rotating arm and the secondary rotating arm to rotate through the second motor. At the same time, the first lifting motor drives the first rotating arm to rise, causing the limit pin to separate from the secondary rotating arm. Then, only the secondary sock picking device moves below the sewing needles of the sewing needle disc. Then, the lower coil pusher moves upward so that the sock coil on the secondary transfer needle can be aligned and pierced by the sewing needles. Then, the sock turning tube turns the sock upward into the upper part of the sewing needle disc, and then the lower coil pusher moves upward again to push the sock coil onto the sewing needles.

[0019] Step 3: After completing Step 2, the secondary sock picking device disengages from the sock. The sewing needle disc rotates up and down and engages, and then the sock seaming is completed by the seaming machine. This sock seaming method clamps and transfers the sock through the sock picking device and the secondary sock picking device, and then the sock turning tube and the lower coil pusher cooperate with the sewing needle disc to achieve blind sewing of the sock, that is, the sewing needle of the seaming machine can directly sew the sock without corresponding sewing needles.

[0020] The present invention adopts a technical structure in which the diameter of the needle loop formed by the main transfer needle is smaller than the diameter of the needle loop formed by the knitting needle, so that the main transfer needle can arbitrarily pierce into the sock coil inside the needle loop, realizing the non-needle-aligning sock picking and transfer function, and further realizing the technical performance that the sewing needle of the seaming machine can directly sew the sock without needle alignment. In addition, a main push rod structure connected to the center of the main transfer needle disc is adopted to drive the push column to move, thereby realizing the coil pushing function of the coil pushing disc combined with the main transfer needle relative to the sock coil. Description of the Drawings

[0021] The following further describes the present invention with reference to the drawings:

[0022] Figure 1 It is a schematic structural diagram of a blind rotation mechanism for a sock knitting machine of the present invention in a bottom view state;

[0023] Figure 2 It is a schematic structural diagram of a blind rotation mechanism for a sock knitting machine of the present invention in a top view state;

[0024] Figure 3 Schematic cross-sectional structure diagram of a blind rotation mechanism for a sock knitting machine according to the present invention;

[0025] Figure 4 Partial structure diagram of a sock picking device according to the present invention;

[0026] Figure 5 Exploded installation structure diagram of a sock picking device according to the present invention;

[0027] Figure 6 Schematic structure diagram of a push column and a push ring plate according to the present invention;

[0028] Figure 7 Exploded installation structure diagram of a sock picking device in a top view state according to the present invention;

[0029] Figure 8 Schematic structure diagram of a main transfer needle disc according to the present invention;

[0030] Figure 9 Schematic structure diagram of a push column and a push ring plate in a top view state according to the present invention;

[0031] Figure 10 Schematic structure diagram of a main transfer needle according to the present invention;

[0032] Figure 11 Schematic structure diagram of a sub-transfer needle according to the present invention;

[0033] Figure 12 is Figure 3 Enlarged structure diagram at position A in;

[0034] Figure 13 Schematic structure diagram of the cooperation between the blind rotation mechanism of a sock knitting machine and a needle cylinder according to the present invention;

[0035] Figure 14 is Figure 13 Enlarged structure diagram at position B in;

[0036] Figure 15 Schematic structure diagram of the state of step one in a sock transfer method for a sock knitting machine;[[ID=5)]]

[0037] Figure 16 Schematic structure diagram of the state of step three in a sock transfer method for a sock knitting machine;

[0038] Figure 17 Schematic structure diagram of the state of step four in a sock transfer method for a sock knitting machine;

[0039] Figure 18 Schematic structure diagram of step one in a sock seaming method for a sock knitting machine;

[0040] Figure 19 Schematic diagram of the structure after the downward pushing ring plate moves upward and resets in the first step of the sock seaming method for a sock knitting machine;

[0041] Figure 20 Schematic diagram of the structure in the second step of the sock seaming method for a sock knitting machine;

[0042] Figure 21 Schematic diagram of the structure in the second step of the sock seaming method for a sock knitting machine, where the downward pushing ring moves upward to push the sock loop onto the sewing needle;

[0043] Figure 22 Schematic diagram of the structure in the third step of the sock seaming method for a sock knitting machine;

[0044] Figure 23 Schematic diagram of the enlarged structure of the needle cylinder in the present invention;

[0045] Figure 24 Schematic diagram of the enlarged structure of the sewing needle disc in the present invention. Specific implementation

[0046] The technical solution of this patent will be further described in detail below in conjunction with the specific implementation manners.

[0047] Please refer to Figure 1-24 A blind rotation mechanism for a sock knitting machine includes knitting needles 38 installed on a needle cylinder 59, and a sock picking device. The sock picking device includes a main transfer needle disc 9, on which main transfer needles 9 are installed. The needle loop diameter formed by the main transfer needles 25 is smaller than the needle loop diameter formed by the knitting needles 38. The center of the main transfer needle disc 9 is threadedly connected with a hollow main push rod 23, and needle grooves 34 for fitting the main transfer needles 25 are provided on the outer periphery of the main transfer needle disc 9. A push column 27 is hermetically fitted on the outer periphery of the main push rod 23. A push ring plate 26 is provided at the top of the push column 27, and push grooves 32 for fitting the sock loops are provided on the outer periphery of the push ring plate 26. Thus, the manufacturing difficulty is reduced, and no needle grooves are provided on both the main transfer needles 25 and the sub-transfer needles 37. In order to further improve the structural performance of the main transfer needles 25, spring rings 22 covering the main transfer needle disc 9 are provided on the main transfer needles 25.

[0048] As a structural preference, a first guide hole 35 and a first spring hole 3 are respectively provided on the main transfer needle disc 9, and a second guide hole 31 and a second spring hole 30 are respectively provided on the push column 27; a guide column 29 is commonly passed through the first guide hole 35 and the second guide hole 31; a return spring 28 is commonly hung in the first spring hole 36 and the second spring hole 30. The push column 27 is fitted with the hollow main push rod 23, and a pressure chamber is formed between the push column 27 and the main push rod 23. A pressure air pipe is connected to the middle of the main push rod 23, and the movement of the push column 27 is controlled by air pressure.

[0049] As a further technical structure, the top of the main transfer needle disc 9 is fixedly connected to the mounting plate 8 through a screw. The mounting plate 8 is fixedly connected to the first rotating arm 7. The first rotating arm 7 is threadedly connected to the first screw rod 75 through the lifting plate 76. The first screw rod 75 is installed on the first lifting motor 1. The first lifting motor 1 is threadedly connected to the lifting tube 17 through the fastening screw 18 on the first connecting plate 74. The bottom of the lifting tube 17 is provided with a flanging, and a secondary rotating arm 15 is connected to the flanging. A first return spring 77 and a limit pin 78 are respectively provided between the secondary rotating arm 15 and the first rotating arm 7. Driven by the first lifting motor 1 and in cooperation with the first return spring 77, the first rotating arm 7 realizes an independent lifting performance. In order to realize the independent lifting performance between each other, a shaft sleeve 16 is provided between the lifting tube 17 and the secondary rotating arm 15 for separation.

[0050] As a structural preference, the lifting tube 17 is fitted with a rotating tube 73. One end of the rotating tube 73 is connected with a spiral bevel gear 79. The spiral bevel gear 79 is connected with a second motor 80 through a worm. The other end of the rotating tube 73 is connected with a second screw rod 72 to a second connecting plate 71. The second connecting plate 71 is connected with a third motor 21. The third motor 21 is threadedly connected to the secondary rotating arm 15 through a third screw 19. The second motor 80 and the third motor 21 cooperate to realize the overall rotation and lifting performance of the secondary rotating arm 15 and the first rotating arm 7.

[0051] As a structural preference, an outer periphery of the needle circle formed by the main transfer needle 25 is provided with a secondary sock picking device. The secondary sock picking device includes a needle circle formed by secondary transfer needles 37. The secondary transfer needles 37 are installed on a secondary transfer needle disc 4. The secondary transfer needle disc 4 is connected with a mounting base 12. An upper side of the mounting base 12 is provided with an orbit fixed disc 11. An upper side of the orbit fixed disc 11 is provided with an orbit movable disc 13. A lower side of the orbit fixed disc 11 is provided with an inner ring 5. An orbit groove 14 is formed on the orbit movable disc 13. The orbit groove 14 is fitted and connected with a sliding screw rod 10. The sliding screw rod 10 is threadedly connected to a driving block 53. The driving block 53 cooperates with a needle foot 50 on the secondary transfer needle 37. A needle foot return spring 54 is provided on the other side of the driving block 53 for the needle foot 50. A cylinder push rod 3 of a cylinder 2 is connected to a side of the orbit movable disc 13. The cylinder 2 is installed on a connecting plate 6. The connecting plate 6 is connected with the secondary rotating arm 15 and the mounting base 12. The secondary sock picking device realizes that the secondary transfer needles move radially along the orbit movable disc under the control of the driving block on the orbit movable disc under the driving of the cylinder, and realizes the performance of adjusting the coil hole tension and position of the sock coil.

[0052] A sock transfer method for a sock knitting machine includes the following steps:

[0053] Step 1: The sock pushing cylinder 40 in the needle cylinder 59 on the sock knitting machine pushes up the sock 39, and then the second motor 80 drives the first rotating arm 7 and the secondary rotating arm 15 to move to directly above the same axis position of the needle cylinder 59 at the same time;

[0054] Step 2: The third motor 21 drives the sock picking device and the auxiliary sock picking device to move downward simultaneously so that the main transfer needle 25 pierces the sock coil inside the knitting needle coil, which is the coil formed by the sock 39 and the knitting needle 38.

[0055] Step 3: The sock pusher 40 pushes the sock from the knitting needle 38 to the main transfer needle 25, and then the first lifting motor 1 drives the lifting plate 76 to rise. Under the action of the first return spring 77, the first rotating arm 7 rises, and then the cylinder 2 drives the cylinder push rod 3 to rotate the track movable disk 13, and then controls the driving block 53 connected to the sliding screw 10 to drive the auxiliary transfer needle 37 to move back and forth. Finally, the needle tip 51 of the auxiliary transfer needle 37 and the main transfer needle 25 correspond to the same sock coil or different sock coils, and then the main push rod 23 drives the pushing column 27 to move downward, that is, the pushing circle disk 26 moves downward to push the sock coil completely into the auxiliary transfer needle 37, and then the pushing column 27 moves upward to reset. When the pushing column 27 moves upward to reset, the first lifting motor 1 drives the first rotating arm 7 to descend and reset, thereby realizing that the auxiliary transfer needle 37 and the main transfer needle 25 clamp the sock coil;

[0056] Step 4: The top sock tube 40 is reset, and then the first rotating arm 7 and the auxiliary rotating arm 15 rotate to pick up and transfer the sock 39 from the needle cylinder.

[0057] A sock toe sewing method for a sock machine comprises the following steps:

[0058] Step 1: The sock picking device and the auxiliary sock picking device clamp the transferred sock 39 and move it to the top of the lower sock tube 43 and the lower push ring 42 of the sock sewing equipment. Then the push ring plate 26 moves downward to press against the sock and push the sock into the auxiliary transfer needle 37. Then the first lifting motor drives the first rotating arm 7 to rise so that the main transfer needle 25 is separated from the auxiliary transfer needle 37. Then, the spring force acts on the lower push ring plate 26 to move upward to reset.

[0059] Step 2: The first rotating arm 7 and the auxiliary rotating arm 15 are driven to rotate by the second motor 80, and at the same time, the first lifting motor drives the first rotating arm 7 to rise so that the limit pin 78 is separated from the auxiliary rotating arm 15, and then only the auxiliary sock picking device moves to the bottom of the sewing needle 45 of the sewing needle disk 44, and then the lower pushing ring 42 moves upward so that the sock loop on the auxiliary transfer needle 37 can be pierced by the sewing needle 45 in the correct position, and then the sock tube 43 is turned upward to turn the sock over to the top of the sewing needle disk 44, and then the lower pushing ring 42 moves upward again to push the sock loop onto the sewing needle 45;

[0060] Step 3: After completing step 2, the auxiliary sock picking device is separated from the sock, and the sewing needle plate 44 rotates up and down to engage, and then the toe sewing machine 46 completes the toe sewing of the sock.

[0061] The above describes in detail the preferred embodiments of this patent. However, this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can also be made without departing from the gist of this patent.

Claims

1. A blind rotation mechanism for a hosiery machine, including knitting needles (38) installed on a needle cylinder (59), and a sock picking device. The sock picking device includes a main transfer needle plate (9), and main transfer needles (25) are installed on the main transfer needle plate (9). It is characterized in that: The center of the main transfer needle disc (9) is threadedly connected with a main push rod (23), and a needle groove (34) for fitting the main transfer needle (25) is formed on the outer periphery of the main transfer needle disc (9); a push column (27) is hermetically fitted on the outer periphery of the main push rod (23), a push ring disc (26) is arranged at the top of the push column (27), and a push groove (32) for fitting the sock coil is arranged on the outer periphery of the push ring disc (26); the main push rod (23) drives the push column (27) to move through the air pipe with a hollow structure; a first guiding hole (35) and a first spring hole (36) are respectively formed on the main transfer needle disc (9); a second guiding hole (31) and a second spring hole (30) are respectively formed on the push column (27); a guiding column (29) penetrates through the first guiding hole (35) and the second guiding hole (31) together; a return spring (28) is hung in the first spring hole (36) and the second spring hole (30) together; an auxiliary sock picking device is arranged on the outer periphery of the needle loop formed by the main transfer needle (25), the auxiliary sock picking device includes a needle loop formed by an auxiliary transfer needle (37), the auxiliary transfer needle (37) is installed on an auxiliary transfer needle disc (4), the auxiliary transfer needle disc (4) is connected with an installation base (12), a track fixing disc (11) is installed on the upper side of the installation base (12), a track movable disc (13) is installed on the upper side of the track fixing disc (11), and an inner ring (5) is installed on the lower side of the track fixing disc (11); a track groove (14) is formed on the track movable disc (13), the track groove (14) is connected with a sliding screw rod (10) in a matching manner, the sliding screw rod (10) is threadedly connected with a driving block (53), the driving block (53) is matched with a pin foot (50) on the auxiliary transfer needle (37), and a pin foot return spring (54) is arranged on the other side of the driving block (53) in a matching manner with the pin foot (50); the side of the track movable disc (13) is connected with a cylinder ejector rod (3) of a cylinder (2) or a push rod controlled by a track driving motor, the cylinder (2) is installed on a connecting plate (6), and the connecting plate (6) is connected with an auxiliary rotating arm (15) and the installation base (12); the diameter of the needle loop formed by the main transfer needle is smaller than the diameter of the needle loop formed by the knitting needle; The push column (27) is fitted with a hollow main push rod (23), a pressure chamber is formed between the push column (27) and the main push rod (23), and a pressure air pipe is connected in the middle of the main push rod (23).

2. The blind rotation mechanism for a hosiery machine according to claim 1, characterized in that: The top of the main transfer needle disc (9) is fixedly connected with a mounting plate (8) through a screw rod, the mounting plate (8) is fixedly connected with a first rotating arm (7), the first rotating arm (7) is threadedly connected with a first screw rod (75) through a lifting plate (76), the first screw rod (75) is installed on a first lifting motor (1), the first lifting motor (1) is threadedly connected with a lifting pipe (17) through a fastening screw rod (18) on a first connecting plate (74), a flanging is arranged at the bottom of the lifting pipe (17), an auxiliary rotating arm (15) is connected to the flanging, and a first return spring (77) and a limit pin (78) are respectively arranged between the auxiliary rotating arm (15) and the first rotating arm (7).

3. The blind rotation mechanism for a hosiery machine according to claim 2, characterized in that: The lifting tube (17) is matched with a rotating tube (73), one end of the rotating tube (73) is connected to a worm gear (79), the worm gear (79) is connected to a second motor (80) through a worm, the other end of the rotating tube (73) is connected to a second connecting plate (71) through a second screw (72), the second connecting plate (71) is connected to a third motor (21), and the third motor (21) is threadedly connected to the auxiliary rotating arm (15) through a third screw (19).

4. The sock transfer method for a blind transfer mechanism of a sock machine according to claim 3, comprising the following steps: Step 1: The top sock cylinder (40) in the needle cylinder (59) of the sock machine lifts the sock (39), and then the second motor (80) drives the first rotating arm (7) and the auxiliary rotating arm (15) to move simultaneously to the same axis position above the needle cylinder (59); Step 2: The third motor (21) drives the sock picking device and the auxiliary sock picking device to move downward simultaneously so that the main transfer needle (25) pierces the sock coil inside the knitting needle coil, and the knitting needle coil is the coil matched with the sock (39) and the knitting needle (38); Step 3: The sock pusher (40) pushes the sock out of the knitting needle (38) and transfers it to the main transfer needle (25), and then the first lifting motor (1) drives the lifting plate (76) to rise, and under the action of the first return spring (77), the first rotating arm (7) rises, and then the cylinder (2) drives the cylinder push rod (3) to rotate the track movable disk (13), and then controls the driving block (53) connected to the sliding screw (10) to drive the auxiliary transfer needle (37) to move back and forth, and finally the needle tip (51) of the auxiliary transfer needle (37) is aligned with the main The transfer needle (25) corresponds to the same sock coil or different sock coils up and down, and then the main push rod (23) drives the push column (27) to move downward again, that is, the push coil plate (26) moves downward to push the sock coil completely into the auxiliary transfer needle (37), and then the push column (27) moves upward to reset. When the push column (27) moves upward to reset, the first lifting motor (1) drives the first rotating arm (7) to descend and reset, thereby achieving the auxiliary transfer needle (37) and the main transfer needle (25) clamping the sock coil; Step 4: The top sock tube (40) is reset, and then the first rotating arm (7) and the auxiliary rotating arm (15) rotate to pick up and transfer the sock (39) from the needle cylinder.

5. The sock toe sewing method for a blind turning mechanism of a sock machine according to claim 3, comprising the following steps: Step 1: The sock picking device and the auxiliary sock picking device clamp the transferred sock (39) and move it to the top of the lower sock tube (43) and the lower push ring (42) of the sock sewing device, and then the push ring plate (26) moves downward to press against the sock, pushing the sock into the auxiliary transfer needle (37), and then the first lifting motor drives the first rotating arm (7) to rise so that the main transfer needle (25) is separated from the auxiliary transfer needle (37), and then the spring force acts on the lower push ring plate (26) to move upward to reset; Step 2: Drive the first rotating arm (7) and the auxiliary rotating arm (15) to rotate through the second motor (80). At the same time, the first lifting motor drives the first rotating arm (7) to rise so that the limit pin (78) is separated from the auxiliary rotating arm (15). Then only the auxiliary sock picking device moves below the sewing needle (45) of the sewing needle plate (44). Then the lower pushing ring (42) moves upward, so that the sock coil on the auxiliary transfer needle (37) can be punctured in alignment by the sewing needle (45). Then the turned-down sock tube (43) moves upward to turn the sock over above the sewing needle plate (44), and then the lower pushing ring (42) moves upward again to push the sock coil onto the sewing needle (45). Step 3: After completing Step 2, the auxiliary sock picking device disengages from the sock, and the sewing needle plate (44) rotates up and down and engages, and then the sock seaming is completed by the seaming machine (46).

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