A lifting machine head and hosiery machine

Abstract

The present invention provides a liftable machine head and a hosiery machine, comprising a machine cover, a cap cover and a driving device, wherein the driving device drives the machine cover and / or the cap cover to move up and down, the driving device is connected to a screw structure, the screw structure is connected to the machine cover, the driving device drives the machine cover to move up and down by driving the screw structure, the cap cover is connected to a connecting shaft, the connecting shaft can be selectively connected or disconnected with the screw structure, a limiting device is arranged on a side away from the screw structure, the limiting device is used to limit the verticality of the machine cover and the cap cover when they move up and down, and the limiting device is arranged as a layered guide rod structure. The machine cover and the cap cover are driven to move up and down simultaneously or separately by the same set of driving devices, compared with the method of driving by two sets of driving devices in the prior art, the control accuracy is higher, and the limiting device cooperates with the limiting device to keep the machine cover and the cap cover on the same axis, thereby ensuring the long-term stable operation of the hosiery machine.

Description

Technical Field

[0001] The invention relates to the technical field of textile equipment, and in particular to a liftable machine head and a hosiery machine. Background Art

[0002] Socks are an indispensable item in people's lives. They not only prevent wear and slip, but also keep warm and absorb sweat. They are mainly composed of toe, sole, heel, tube and mouth. After knitting socks, the machine head and cap need to be raised to a certain height to leave space for the swing arm mechanism and coil grabbing mechanism to enter the needle cylinder to grab all the coils on the knitting needle and transfer them to the needle disc for sewing. When all the coils are taken away, the machine head will be lowered and reset to knit the next sock.

[0003] However, the existing machine head and cap cover are mainly lifted and lowered manually. For example, the patent with publication number CN108486756B in the prior art discloses an automatic lifting mechanism for the machine head cap cover. Figure 1 As shown, the mechanism includes a lifting seat, a motor, a cap cover base and a machine head base; the cap cover base is used to install various small parts such as yarn feeding and yarn adding, and the machine head base is used to install various small parts such as Huff transmission and Huff clutch. After the machine head and the cap cover are installed and fixed, the machine head is located directly above the cap cover. The machine head and the cap cover realize the synchronous up and down movement of the cap cover and the machine head through the motor-driven ball screw. When the machine head and the cap cover need to be separated, the machine head is lifted up by the cylinder to realize the separation of the two, and the separation of the machine head and the cap cover is manually controlled. Although the prior art has higher lifting position accuracy through motor drive, it requires two sets of driving devices to control the simultaneous lifting of the machine head and the cap cover and the control of the machine head to lift alone, which makes the overall device complicated and prone to conflict between the two sets of devices. In addition, after the machine head is separated from the cap cover, when the machine head is lifted and moved alone, the positioning position accuracy is limited, which seriously affects the production quality of socks. Summary of the invention

[0004] In view of this, the present invention aims to provide a liftable machine head and a hosiery machine to solve the problems of the prior art that the device for controlling the lifting of the machine head and the hat cover is complex and the positioning is inaccurate.

[0005] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0006] A liftable machine head includes a machine cover, a cap cover and a driving device, wherein the driving device drives the machine cover and / or the cap cover to move up and down, the driving device is connected to a screw structure, the screw structure is connected to the machine cover, the driving device drives the machine cover to move up and down by driving the screw structure, the cap cover is connected to a connecting shaft, the connecting shaft can be selectively connected or disconnected with the screw structure, a limiting device is arranged on a side away from the screw structure, the limiting device is used to limit the verticality of the machine cover and the cap cover when they move up and down, and the limiting device is arranged as a layered guide rod structure. When the machine cover and the cap cover need to move up at the same time, the connecting shaft is connected to the screw structure to leave space for the grabbing structure to take out the socks, and when the picking mechanism takes away the socks, the driving device drives the machine cover and the cap cover to move downward and reset, and then proceeds to knit the next sock. When the operator needs to pay attention to the specific knitting situation of the socks or change the yarn, the connecting shaft and the screw structure are disconnected, the machine cover and the hat cover are separated, and the driving device drives the machine cover to move upward alone, while the knitting program continues to run, thereby improving the overall operability of the equipment; when the machine cover moves up and down alone and drives the scissor disk and the half disk in and out of the hat cover, the limit device can ensure the straightness of the up and down movement, so that the scissor disk and the half disk can enter the inside of the hat cover smoothly and accurately, thereby reducing the equipment failure rate.

[0007] Furthermore, the central axis of the connecting shaft and the screw structure are parallel, and the limiting device is parallel to the central axis of the connecting shaft and the screw structure.

[0008] Furthermore, a fixing device is provided on the connecting shaft, and the connecting shaft can be selectively connected to or disconnected from the screw structure through the fixing device.

[0009] Furthermore, a connecting sleeve is sleeved on the outside of the connecting shaft, the screw structure includes a screw shaft and a screw sleeve sleeved outside the screw shaft, the fixing device is connected to the connecting sleeve, and the other end of the fixing device can be selectively connected or disconnected from the screw sleeve.

[0010] Furthermore, the fixing device includes a protrusion and a fixing piece, the protrusion and the connecting sleeve are vertically fixedly connected, the fixing piece is installed on the protrusion, and a mounting groove is provided on the screw sleeve. The protrusion is provided on a side of the connecting sleeve facing the screw structure, and the mounting groove is provided on a side of the screw sleeve facing the connecting shaft, and the protrusion can be selectively connected or disconnected from the screw sleeve through the fixing piece.

[0011] Furthermore, the limiting device includes a first guide rod and a second guide rod, and the first guide rod and the second guide rod are arranged on a side away from the connecting shaft and the screw structure.

[0012] Furthermore, the first guide rod and the second guide rod are not coaxial, the central axes of the first guide rod and the second guide rod are parallel to each other, and the central axes of the first guide rod and the second guide rod are parallel to the central axes of the connecting shaft and the screw structure.

[0013] Furthermore, the upper end of the first guide rod or a position close to the upper end is connected to the machine cover, the lower part of the first guide rod is connected to the hat cover, the upper end of the second guide rod or a position close to the upper end is connected to the hat cover, and the lower part of the second guide rod is connected to the table structure.

[0014] Furthermore, a cylinder is provided at the lower part of the machine cover for supporting the machine cover, and the cylinder is provided at the top of the connecting shaft.

[0015] Compared with the prior art, the liftable head of the present invention has the following advantages:

[0016] 1) When the operator needs to pay attention to the specific knitting situation of the socks or change the yarn, the machine cover and the cap cover are separated, and the motor drives the machine cover to move upward, while the knitting program continues to run, thereby improving the overall operability of the equipment. The machine cover and the cap cover are driven to move up and down simultaneously or separately by the same set of driving devices. Compared with the method of driving by two sets of driving devices in the prior art, there will be no conflict, and the control accuracy of one set of devices is higher, so that the machine cover and the cap cover remain on the same axis, thereby ensuring the long-term stable operation of the sock knitting machine.

[0017] 2) Compared with the prior art in which one guide rod controls the vertical movement direction of the machine cover and the hat cover, the two guide rods assist each other, which further improves the limiting effect, and is beneficial for the machine cover to remain on the same axis when it moves up and down, so that when the machine cover drives the scissor disk and the half disk to move downward together, the straightness of the up and down movement is guaranteed, and the scissor disk and the half disk can smoothly and accurately enter the inside of the hat cover, thereby reducing the equipment failure rate. The setting of the layered guide rods strengthens the supporting effect of the machine cover and the hat cover, and improves the operating stability. In addition, the setting of the two short guide rods is easier to manufacture than the structure of one long guide rod in the prior art, thereby reducing the defective rate.

[0018] The present invention also provides a hosiery knitting machine, comprising the liftable machine head described above.

[0019] The hosiery machine has the same advantages as the above-mentioned liftable head over the prior art, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the automatic lifting mechanism of the head cap cover in the prior art;

[0021] Figure 2 It is a partial schematic diagram of a hosiery knitting machine according to an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the connection structure of the connecting sleeve and the screw sleeve according to an embodiment of the present invention;

[0023] Figure 4 for Figure 3 A partial enlarged view of the A part;

[0024] Figure 5 This is a schematic diagram of the connection structure between the middle table and the lower table according to an embodiment of the present invention;

[0025] Figure 6 This is a schematic diagram of the middle table structure according to an embodiment of the present invention;

[0026] Figure 7 This is a schematic diagram of the lower table structure according to an embodiment of the present invention;

[0027] Figure 8 This is a schematic diagram of the equal-height column structure described in an embodiment of the present invention.

[0028] Description of reference numerals:

[0029] 1-machine cover, 11-first guide rod, 2-hat cover, 21-second guide rod, 3-tray, 31-equal height column, 32-middle table, 33-lower table, 311-first convex shaft, 312-second convex shaft, 313-columnar body, 314-top surface, 315-bottom surface, 321-first connecting hole, 331-second connecting hole, 322-third connecting hole, 4-screw structure, 41-screw sleeve, 42-mounting groove, 43-card plate, 44-screw shaft, 5-connecting shaft, 51-connecting sleeve, 52-protruding part, 521-protruding body, 54-protruding column, 55-first connecting arm, 56-second connecting arm, 57-fixing part, 551-first groove, 561-second groove, 571-card groove, 572-card hole, 6-motor, 7-cylinder, 8-scissor disk, 9-half disk DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0031] like Figures 1-2As shown, the present invention provides a liftable machine head, including a machine cover 1, a cap cover 2 and a driving device, the driving device drives the machine cover 1 and / or the cap cover 2 to move up and down, the machine cover 1 and the cap cover 2 can move up and down at the same time, or the machine cover 1 can move up and down alone. The driving device is connected to the screw structure 4, the screw structure 4 is connected to the machine cover 1, the driving device drives the machine cover 1 to move up and down by driving the screw structure 4 to move up and down, the cap cover 2 is connected to the connecting shaft 5, the connecting shaft 5 can be selectively connected or disconnected with the screw structure 4, when the machine cover 1 and the cap cover 2 need to move at the same time, the connecting shaft 5 and the screw structure 4 are connected together, the driving device drives the screw structure 4 to move up and down, and then drives the machine cover 1 and the cap cover 2 to move up and down at the same time; when the machine cover 1 and the cap cover 2 need to be separated, the connecting shaft 5 and the screw structure 4 are disconnected, the driving device drives the screw structure 4 to move up and down, and then controls the machine cover 1 to move up and down alone.

[0032] When knitting is completed, the drive device drives the machine cover 1 and the cap cover 2 to move upward to leave space for the grabbing structure to take out the socks. After the picking mechanism takes away the socks, the drive device drives the machine cover 1 and the cap cover 2 to move downward and reset, and then knit the next sock. When the operator needs to pay attention to the specific knitting situation of the socks or change the yarn, the machine cover 1 and the cap cover 2 are separated, and the drive device drives the machine cover 1 to move upward alone, while the knitting program continues to run, improving the overall operability of the equipment.

[0033] The lower part of the machine cover 1 is connected with a scissor disk 8 and a half disk 9. The machine cover 1 moves up and down and drives the scissor disk 8 and the half disk 9 to move up and down at the same time, so that the scissor disk 8 and the half disk 9 can enter and exit the inside of the hat cover 2. In order to fully ensure that the machine cover 1 and the hat cover 2 can maintain a vertical state when moving up and down, so that the scissor disk 8 and the half disk 9 can smoothly enter and exit the hat cover 2, a limiting device is set on the side of the machine cover 1 and the hat cover 2 away from the screw structure 4, which is used to limit the verticality of the machine cover 1 and the hat cover 2 when moving up and down. The limiting device is set as a layered guide rod structure. Compared with the prior art in which a guide rod controls the vertical movement direction of the machine cover 1 and the hat cover 2, its limiting effect is further improved, which is conducive to keeping the machine cover 1 on the same axis when moving up and down.

[0034] The present invention drives the machine cover 1 and the cap cover 2 to move up and down simultaneously or separately through the same set of driving devices. Compared with the method of driving by two sets of driving devices in the prior art, no conflict will occur, and the control accuracy of one set of devices is higher. It cooperates with the limit device to keep the machine cover 1 and the cap cover 2 on the same axis, thereby ensuring the long-term stable operation of the hosiery machine.

[0035] Preferably, the driving device can be configured as a motor 6 or other power sources.

[0036] Furthermore, the central axis of the connecting shaft 5 is parallel to the central axis of the screw structure 4, and the limiting device is parallel to the central axes of the connecting shaft 5 and the screw structure 4. This allows the machine cover 1 and the cap cover 2 to remain on the same axis when they move up and down.

[0037] A fixing device is provided on the connecting shaft 5, the fixing device is perpendicular to the axis of the connecting shaft 5 and extends in a direction close to the screw structure 4, and the connecting shaft 5 can be selectively connected or disconnected with the screw structure 4 through the fixing device. When the machine cover 1 and the cap cover 2 need to move simultaneously, the fixing device and the screw structure 4 are connected together; when the machine cover 1 and the cap cover 2 need to be separated, the fixing device and the screw structure 4 are disconnected.

[0038] Specifically, a connecting sleeve 51 is sleeved on the outside of the connecting shaft 5, the screw structure 4 includes a screw shaft 44 and a screw sleeve 41 sleeved on the outside of the screw shaft 44, the fixing device is connected to the connecting sleeve 51, and the other end of the fixing device can be selectively connected or disconnected with the screw sleeve 41.

[0039] Furthermore, the fixing device includes a protrusion 52 and a fixing member 57. The protrusion 52 and the connecting sleeve 51 are vertically fixedly connected. The fixing member 57 is installed on the protrusion 52. The mounting groove 42 is arranged on the screw sleeve 41. The protrusion 52 is arranged on the side of the connecting sleeve 51 facing the screw structure 4. The mounting groove 42 is arranged on the side of the screw sleeve 41 facing the connecting shaft 5. The protrusion 52 can be selectively connected or disconnected with the screw sleeve 41 through the fixing member 57. When the machine cover 1 and the cap cover 2 need to be moved at the same time, the fixing member 57 and the mounting groove 42 are engaged. When the machine cover 1 and the cap cover 2 need to be separated, the fixing member 57 and the mounting groove 42 are separated.

[0040] The raised portion 52 includes a raised body 521, which is vertically fixedly connected to the connecting sleeve 51. A first connecting arm 55 and a second connecting arm 56 are provided on the side of the raised body 521 away from the connecting sleeve 51. The first connecting arm 55 and the second connecting arm 56 are parallel to each other and extend in a direction close to the screw sleeve 41. A gap is provided between the two connecting arms to facilitate mutual engagement with the mounting groove 42 of the screw sleeve 41. The two ends of the fixing member 57 are respectively installed on the first connecting arm 55 and the second connecting arm 56. The middle part of the fixing member 57 is located at the upper part of the gap between the two connecting arms. The middle part of the fixing member 57 is connected or disconnected with the mounting groove 42 of the screw sleeve 41.

[0041] A first groove 551 is provided on one side of the first connecting arm 55 connected to the protruding body 521, and a second groove 561 is provided on one side of the second connecting arm 56 connected to the protruding body 521. A fixing member 57 is installed inside the first groove 551 and the second groove 561. A clamping groove 571 is provided at a position corresponding to the gap between the two connecting arms in the middle part of the fixing member 57, and a clamping plate 43 is correspondingly provided at the installation groove 42 of the screw sleeve 41. When the protruding portion 52 and the screw sleeve 41 are fixedly connected, the clamping groove 571 is engaged with the clamping plate 43 to realize the fixed connection between the protruding portion 52 and the screw sleeve 41.

[0042] Furthermore, a protruding column 54 is provided in the first groove 551 or the second groove 561, and a clamping hole 572 is provided on at least one end of the fixing member 57. The protruding column 54 cooperates with the clamping hole 572 so that the fixing member 57 is stably fixed on the protruding column 54 to prevent the fixing member 57 from being separated from the protruding portion 52.

[0043] Correspondingly, the side of the screw sleeve 41 facing the connecting shaft 5 is set as a plane, so that when the screw sleeve 41 and the connecting sleeve 51 are engaged, the screw sleeve 41 is embedded in the gap between the first connecting arm 55 and the second connecting arm 56. The mounting groove 42 is set on the plane of the side of the screw sleeve 41 facing the connecting shaft 5, and the mounting groove 42 is set as a structure that is recessed away from the connecting shaft 5. The top of the mounting groove 42 is a certain distance away from the top of the screw sleeve 41, so that the body of the screw sleeve 41 forms the top and bottom of the mounting groove 42. After the protrusion 52 is connected to the mounting groove 42 and drives the machine cover 1 and the cap cover 2 to move up and down, the clamping groove 571 and the clamping plate 43 will not be separated.

[0044] The clamping plate 43 is arranged inside the installation groove 42 , and the surface of the clamping plate 43 facing the connecting shaft 5 is flush with the outer wall of the screw sleeve 41 , so that the clamping plate 43 and the clamping groove 571 can be tightly fixed when connected.

[0045] Furthermore, a cylinder 7 is provided at the lower part of the cover 1. When the cover 1 and the cap cover 2 are raised to the highest position, the cylinder 7 is inflated to support the cover 1. Preferably, the cylinder 7 is provided at the top of the connecting shaft 5 to reduce the complexity of the device.

[0046] Specifically, the limiting device includes a first guide rod 11 and a second guide rod 21, which are arranged on a side away from the connecting shaft 5 and the screw structure 4. The first guide rod 11 and the second guide rod 21 are not coaxial, but the central axes of the first guide rod 11 and the second guide rod 21 are parallel to each other, and the central axes of the first guide rod 11 and the second guide rod 21 are parallel to the central axes of the connecting shaft 5 and the screw structure 4. The first guide rod 11 and the second guide rod 21 assist in guiding each other.

[0047] Among them, the upper end or the position close to the upper end of the first guide rod 11 is connected to the machine cover 1, the lower part of the first guide rod 11 is connected to the hat cover 2, the upper end or the position close to the upper end of the second guide rod 21 is connected to the hat cover 2, and the lower part of the second guide rod 21 is connected to the table structure, so that the hat cover 2 is limited by the first guide rod 11 and the second guide rod 21. When one of the first guide rod 11 or the second guide rod 21 is offset, the other guide rod can effectively correct the offset, so that the hat cover 2 is accurately positioned. The structural setting of the layered guide rod ensures the straightness of the up and down movement when the machine cover 1 drives the scissor disk and the half disk to move downward together, and can smoothly and accurately enter the inside of the hat cover 2, ensuring that the machine cover 1 runs in a straight direction, reducing the equipment failure rate, and the setting of the layered guide rod strengthens the supporting effect of the machine cover 1 and the hat cover 2, and improves the operation stability. In addition, the setting of two short guide rods is easier to manufacture than the structure of one long guide rod in the prior art, reducing the defective rate.

[0048] Furthermore, the table structure is set to two layers, including a middle table 32 and a lower table 33, the middle table 32 is set on the upper part of the lower table 33, the bottom of the second guide rod 21 is fixed on the lower table 33, and the middle part of the second guide rod 21 is fixed by the middle table 32, thereby limiting the lower part of the second guide rod 21, increasing the limiting support effect of the second guide rod 21 on the hat cover 2, and ensuring that the second guide rod 21 is in a vertical state, thereby increasing the vertical limiting capacity of the layered guide rod structure. Among them, the middle table 32 and the lower table 33 are balanced, and the middle table 32 and the lower table 33 are parallel to the plane where the machine cover 1 and the hat cover 2 are located.

[0049] Preferably, the second guide rod 21 can also be set to a shorter structure, the lower part of the second guide rod 21 is fixedly mounted on the middle table 32, and the upper part of the second guide rod 21 is connected to the hat cover 2, so as to fully shorten the length of the second guide rod 21 and make it easier to manufacture.

[0050] Furthermore, equal-height columns 31 are arranged between the middle table 32 and the lower table 33. There are multiple equal-height columns 31, which are evenly spaced and distributed along the circumference of the middle table 32 and the lower table 33 close to the side edges to ensure stable support and fixation of the middle table 32 and the lower table 33, so that the middle table 32 and the lower table 33 remain parallel.

[0051] Specifically, the equal-height column 31 includes a columnar body 313 and connecting parts arranged at both ends, and the connecting parts at both ends are respectively connected to the middle table 32 and the lower table 33.

[0052] Furthermore, a first protrusion 311 is arranged on the top surface 314 of the columnar body 313, and a second protrusion 312 is arranged on the bottom surface 315 of the columnar body 313. The outer diameters of the first protrusion 311 and the second protrusion 312 are smaller than the outer diameter of the columnar body 313, wherein the first protrusion 311 is connected to the middle table 32, and the second protrusion 312 is connected to the lower table 33, the top surface 314 is supported on the lower part of the middle table 32, and the bottom surface 315 abuts against the upper surface of the lower table 33.

[0053] Furthermore, a plurality of first connection holes 321 are provided on the middle table 32, and a plurality of second connection holes 331 are provided on the lower table 33. The first protruding shaft 311 of the contour column 31 is fixedly connected to the middle table 32 via the first connection hole 321, and the second protruding shaft 312 of the contour column 31 is fixedly connected to the lower table 33 via the second connection hole 331.

[0054] A third connection hole 322 is further provided on the middle table surface 32 . The third connection hole 322 can be offset or overlapped with the first connection hole 321 . The third connection hole 322 is used for installing the second guide rod 21 .

[0055] Furthermore, a tray 3 is provided at the lower part of the lower table 33, and the tray 3 is connected to a support seat (not shown in the figure). The upper knitting device of the hosiery machine is fixed by connecting the tray 3 and the support seat.

[0056] As part of an embodiment of the present invention, a socks machine is also provided, comprising the liftable machine head described above.

[0057] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

Claims

1. A liftable machine head, comprising a machine cover (1), a cap cover (2) and a driving device, wherein the driving device drives the machine cover (1), or the machine cover (1) and the cap cover (2) to move up and down, characterized in that: The driving device is connected to the screw structure (4), and the screw structure (4) is connected to the machine cover (1). The driving device drives the machine cover (1) to move up and down by driving the screw structure (4). The cap cover (2) is connected to the connecting shaft (5), and the connecting shaft (5) can be selectively connected to or disconnected from the screw structure (4). A limiting device is provided on a side away from the screw structure (4). The limiting device is used to limit the verticality of the machine cover (1) and the cap cover (2) when they move up and down. The limiting device is provided as a layered guide rod structure.

2. The liftable head according to claim 1, characterized in that: The connecting shaft (5) and the central axis of the screw structure (4) are parallel, and the limiting device is parallel to the central axis of the connecting shaft (5) and the screw structure (4).

3. The liftable head according to claim 1, characterized in that: A fixing device is provided on the connecting shaft (5), and the connecting shaft (5) can be selectively connected to or disconnected from the screw structure (4) through the fixing device.

4. The liftable head according to claim 3, characterized in that: A connecting sleeve (51) is sleeved on the outside of the connecting shaft (5); the screw structure (4) comprises a screw shaft (44) and a screw sleeve (41) sleeved on the outside of the screw shaft (44); the fixing device is connected to the connecting sleeve (51); and the other end of the fixing device can be selectively connected to or disconnected from the screw sleeve (41).

5. The liftable head according to claim 4, characterized in that: The fixing device comprises a protruding portion (52) and a fixing member (57); the protruding portion (52) and the connecting sleeve (51) are vertically fixedly connected; the fixing member (57) is mounted on the protruding portion (52); a mounting groove (42) is provided on the screw sleeve (41); the protruding portion (52) is provided on a side of the connecting sleeve (51) facing the screw structure (4); the mounting groove (42) is provided on a side of the screw sleeve (41) facing the connecting shaft (5); the protruding portion (52) can be selectively connected to or disconnected from the screw sleeve (41) via the fixing member (57).

6. The liftable head according to claim 1 or 2, characterized in that: The limiting device comprises a first guide rod (11) and a second guide rod (21), wherein the first guide rod (11) and the second guide rod (21) are arranged on a side away from the connecting shaft (5) and the screw structure (4).

7. The liftable head according to claim 6, characterized in that: The first guide rod (11) and the second guide rod (21) are not coaxial, the central axes of the first guide rod (11) and the second guide rod (21) are parallel to each other, and the central axes of the first guide rod (11) and the second guide rod (21) are parallel to the central axes of the connecting shaft (5) and the screw structure (4).

8. The liftable head according to claim 6, characterized in that: The upper end of the first guide rod (11) or a position close to the upper end is connected to the machine cover (1), the lower part of the first guide rod (11) is connected to the cap cover (2), the upper end of the second guide rod (21) or a position close to the upper end is connected to the cap cover (2), and the lower part of the second guide rod (21) is connected to the table structure.

9. The liftable head according to claim 1, characterized in that: A cylinder (7) is arranged at the bottom of the machine cover (1) for supporting the machine cover (1), and the cylinder (7) is arranged at the top of the connecting shaft (5).

10. A hosiery knitting machine, characterized in that: The invention comprises a liftable head as described in any one of claims 1 to 9.

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