CN217052608U

CN217052608U - Controllable telescopic needle selecting mechanism of high-speed glove knitting machine

Info

Publication number: CN217052608U
Application number: CN202220801439.4U
Authority: CN
Inventors: 沈周宝
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-04-08
Filing date: 2022-04-08
Publication date: 2022-07-26
Anticipated expiration: 2032-04-08

Abstract

The utility model discloses a controllable flexible needle mechanism of selecting of high-speed glove knitting machine, including frame, aircraft nose body, still set up the brace subassembly on the frame and set up the tucking subassembly at both ends about the aircraft nose body respectively including sliding, the tucking subassembly includes base, briquetting, link assembly, rocking arm, the rocking arm keeps magnetism with the brace subassembly to be connected, the tucking subassembly slides along with the aircraft nose body to make rocking arm and link assembly butt in the tucking subassembly opposite with aircraft nose body direction of motion and support and push away the downward activity of briquetting and select the needle butt with elasticity. The utility model provides a high-speed glove machine tucking mechanism keeps the butt through briquetting and elasticity selection needle, and then makes elasticity selection needle reset, does not participate in weaving, because the controllable slip of briquetting, can shorten by a wide margin and reduce the briquetting and select long with the effect of elasticity selection needle, reduces wearing and tearing, and extension both life can effectively strengthen the anti fatigue strength of elasticity selection needle, effectively prevents elasticity selection needle fatigue fracture.

Description

Controllable telescopic needle selecting mechanism of high-speed glove knitting machine

Technical Field

The utility model relates to a glove machine production technical field relates to a controllable flexible needle selection mechanism of high-speed glove machine particularly.

Background

The high-speed glove knitting machine mainly realizes knitting by respectively driving knitting needles and sinkers to move through a machine head triangle knitting system and a sinker triangle.

According to the publication: CN113151968A, published as 2021-07-23 patent application, discloses a needle selection mechanism of a high-speed glove knitting machine, which comprises a needle plate and a plurality of elastic needle selectors, wherein the needle plate is provided with a plurality of needle grooves for accommodating the elastic needle selectors; the method is characterized in that: the needle selecting mechanism of the high-speed glove knitting machine further comprises a needle selector and a needle selecting pressing block, a plurality of magnetic force points which can independently control magnetization and demagnetization are embedded in the needle selector, the needle selector is fixedly arranged on the lower side of a needle plate, the elastic needle selector comprises a magnetic force adsorption section, an elastic needle selector triangle acting section, a crochet connecting section, an elastic resetting section and a guide limiting section, the guide limiting section is connected and formed below the crochet connecting section and forms a guide groove with the crochet connecting section, all the elastic needle selectors penetrate through the guide groove through limiting steel wires to be installed in a limiting mode, the elastic needle selector serves as a rotating supporting point through the limiting steel wires, and the elastic resetting section is connected and formed below the elastic needle selector triangle acting section and is obliquely arranged downwards; the magnetic adsorption sections are correspondingly arranged above the magnetic points one by one, and the front side of the needle selector is provided with a contact abutting surface matched with the tail part of the elastic reset section; the needle selecting press block is arranged at the lateral part of the machine head which moves transversely and is correspondingly arranged right above the triangle action section of the elastic needle selecting sheet.

In the above-mentioned published patent application, the needle selecting press blocks arranged on the casing of the machine head are fixedly arranged, and in the process of reciprocating motion of the casing of the machine head, the needle selecting press blocks arranged on both sides of the casing of the machine head repeatedly contact with one end of the elastic needle selector, so that the contact frequency of the needle selecting press blocks and the elastic needle selector is increased, excessive abrasion between the two is easily caused, repeated stress on the elastic needle selector is easily increased by a large margin due to frequent needle pressing, and the elastic needle selector is easily broken.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a controllable flexible needle mechanism of selecting of high-speed glove knitting machine aims at solving the long-time and the contact of elasticity selection needle piece one end of selecting the needle briquetting that sets up in aircraft nose casing both sides, has increased and has selected needle briquetting and elasticity selection needle piece contact number of times, leads to both excessive wearing and tearing easily, and frequent tucking leads to the repeated stress that elasticity selection needle piece received to increase by a wide margin easily, leads to causing the cracked problem of elasticity selection needle piece easily.

In order to achieve the above object, the present invention provides the following technical solutions:

the controllable telescopic needle selecting mechanism of the high-speed glove knitting machine comprises a machine base, a machine head body arranged on the machine base in a sliding mode, a brace component arranged on the machine base in a sliding mode and needle pressing components arranged at the left end and the right end of the machine head body respectively, wherein each needle pressing component comprises a base, a pressing block, a connecting rod component and a rocker arm, the rocker arms are magnetically connected with the brace component, and the needle pressing components slide along with the machine head body so that the rocker arms and the connecting rod components in the needle pressing components opposite to the machine head body in moving direction abut against each other and push the pressing blocks to move downwards and abut against elastic needle selecting pieces.

Preferably, the needle pressing assembly further comprises a resetting assembly, the resetting assembly is arranged between the base and the connecting rod assembly, and the resetting assembly drives the connecting rod assembly to rotate so as to enable the pressing block to keep moving vertically and upwards.

Preferably, the connecting rod assembly comprises a first connecting rod and a second connecting rod which are hinged to each other, one end of the first connecting rod is rotatably connected to the pressing block, one end of the second connecting rod is rotatably connected to the base, and the connecting rod assembly is abutted to one end of the rocker arm through the first connecting rod and the second connecting rod.

Preferably, a first limiting portion is arranged on the pressing block, the pressing block is connected to the base in a sliding mode, and the pressing block is abutted to the machine head body through the first limiting portion.

Preferably, the base is provided with a second limiting portion, and the second limiting portion abuts against the connecting rod assembly and limits the connecting rod assembly to rotate.

Preferably, the rocking arm includes butt portion and magnetism portion of inhaling, magnetism portion of inhaling sets up in rocking arm one end, the rocking arm passes through magnetism portion of inhaling and the brace subassembly keeps magnetism to be connected, butt portion sets up in magnetism portion one side of inhaling, through butt portion and link assembly keep the butt.

Preferably, a guide part is arranged on the base, and the pressing block is in sliding connection with the base through the guide part.

Preferably, the brace assembly comprises a brace body and a driving assembly, the driving assembly is arranged on the base, the brace body is connected to the base in a sliding mode, and the driving assembly is in transmission connection with the brace body.

Preferably, the pressing block is provided with a needle pressing tip, and the pressing block is abutted with the elastic selector by the needle pressing tip.

In the technical scheme, the utility model provides a pair of controllable flexible needle selection mechanism of high-speed glove machine has following beneficial effect:

the utility model discloses a, the aircraft nose body keeps reciprocating sliding on the frame, when the aircraft nose body slides towards frame one side, because rocking arm and brace subassembly keep magnetism to be connected, the rocking arm can rotate towards deviating from aircraft nose body slip direction, and then can make rocking arm and link assembly butt in the tucking subassembly of keeping away from slip direction one side, make the briquetting of keeping away from in the tucking subassembly of slip direction one side keep moving downwards, and keep the butt with the elasticity selection needle, and then make the elasticity selection needle reset, do not participate in weaving, because the controllable slip of briquetting, can shorten by a wide margin and reduce the briquetting and select long when the effect of needle, reduce wearing and tearing, prolong both life, can effectively strengthen the antifatigue intensity of elasticity selection needle, effectively prevent the fatigue fracture of elasticity selection needle.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to these drawings.

Fig. 1 is a schematic perspective view of an embodiment of the present invention;

fig. 2 is a schematic view of a connection relationship of the needle pressing assembly according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a lifting position of a needle pressing triangle block provided by the embodiment of the present invention;

fig. 4 is a schematic view of a pressing position of the needle pressing triangle block provided by the embodiment of the present invention;

fig. 5 is a schematic structural diagram of a first embodiment according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a second embodiment according to an embodiment of the present invention;

fig. 7 is a schematic cross-sectional view of a second embodiment according to the present invention;

fig. 8 is a schematic structural diagram of a third embodiment according to an embodiment of the present invention;

fig. 9 is a schematic cross-sectional view of a third embodiment according to an embodiment of the present invention;

fig. 10 is a schematic structural view of a third embodiment accommodating groove structure provided in the present invention;

fig. 11 is a schematic structural view of a brace assembly provided by an embodiment of the present invention.

Description of the reference numerals:

1. a handpiece body; 2. a brace assembly; 21. a brace body; 22. a drive assembly; 3. a needle pressing assembly; 31. a base; 311. a second limiting part; 312. a guide portion; 32. pressing into blocks; 321. a first limiting part; 322. pressing the needle tip; 33. a connecting rod assembly; 331. a first link; 332. a second link; 34. a rocker arm; 341. an abutting portion; 342. a magnetic suction part; 35. and resetting the component.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the attached drawings.

Referring to fig. 1-11, a controllable telescopic needle selecting mechanism of a high-speed glove knitting machine comprises a machine base, a machine head body 1 arranged on the machine base in a sliding manner, a brace assembly 2 arranged on the machine base in a sliding manner, and needle pressing assemblies 3 respectively arranged at the left end and the right end of the machine head body 1, wherein each needle pressing assembly 3 comprises a base 31, a pressing block 32, a connecting rod assembly 33 and a rocker arm 34, the rocker arms 34 are magnetically connected with the brace assembly 2, and the needle pressing assemblies 3 slide along with the machine head body 1, so that the rocker arms 34 in the needle pressing assemblies 3 opposite to the moving direction of the machine head body 1 are abutted against the connecting rod assemblies 33 and the pressing blocks 32 move downwards to abut against elastic needle selecting sheets.

Specifically, the machine head body 1 is in sliding connection with the machine base through a machine head optical axis, and keeps reciprocating motion through a machine head driving belt and a driving motor which are arranged on the machine base, a brace component 2 is further arranged on the machine base, an electromagnetic needle selection mechanism is further arranged on the machine base, the electromagnetic needle selection mechanism and the elastic needle selection sheet are in magnetic connection, the electromagnetic needle selection mechanism is preferably an electromagnet, one end of the elastic needle selection sheet is controlled to rotate on the machine base through the electromagnet, when the elastic needle selection sheet and the electromagnet keep an adsorption state, the elastic needle selection sheet is in a pressing-down state, the elastic needle selection sheet can be separated from a plane of a triangular bottom plate arranged at the bottom of the machine head body 1, the elastic needle selection sheet is separated from a needle running channel, a crochet needle is not involved in knitting, needle pressing components 3 are respectively arranged at two ends of the machine head body 1, and each needle pressing component 3 comprises a base 31, Briquetting 32, link assembly 33 and rocking arm 34, specifically, fixed mounting has the mounting panel on the outer wall of base 31 one side, the symmetry is seted up threaded hole on the outer wall of mounting panel one side, the mounting panel passes through threaded hole and bolt fixed mounting on the outer wall of aircraft nose body 1 one side, the one end sliding connection of briquetting 32 is on aircraft nose body 1, the one end of link assembly 33 and briquetting 32 keep articulating, the other end of link assembly 33 rotates the one end of connecting in base 31, rocking arm 34 rotates the outer wall of connecting in aircraft nose body 1 one side, and the one end of rocking arm 34 keeps magnetic connection with brace subassembly 2 that sets up on the base. The rocker arm 34 can control whether to keep magnetic connection with the brace assembly 2 through swinging, and the friction times of the pressing block 32 and the elastic needle selector can be reduced when needle selection operation is not needed.

When in use, the machine head body 1 keeps sliding on the machine base, when the machine head body 1 slides to the right side, since one end of rocker arm 34, which is pivotally connected to handpiece body 1, remains magnetically connected to the brace body 21, and since brace assembly 2 remains stationary with respect to handpiece body 1, when the right side of the head body 1 slides, the end of the rocker arm 34 magnetically connected with the brace body 21 is deflected to the left, both rocker arms 34 are deflected to the left, so that the rocker arm 34, which is located on the left side of the base 31, i.e. opposite to the direction of movement of the handpiece body 1, abuts against the connecting-rod assembly 33 on the same side, and then the pressing block 32 in the needle pressing assembly 3 deviating from the motion direction of the machine head body 1 is pressed downwards and is abutted with the elastic needle selection piece in the electromagnetic needle selection mechanism, so that the elastic needle selection piece retracts and is separated from the plane of the triangular bottom plate below the machine head body 1. And close to the movement direction of the machine head body 1, namely the connecting rod assembly 33 in the needle pressing assembly 3 positioned at the right side of the machine head body 1, the rocker arm 34 is not abutted to the connecting rod assembly 33 because the rocker arm 34 deflects to the left.

The utility model discloses a, aircraft nose body 1 keeps reciprocating sliding on the frame, when aircraft nose body 1 slides towards frame one side, because rocking arm 34 and brace subassembly 2 keep magnetic connection, rocking arm 34 can rotate towards deviating from aircraft nose body 1 slip direction, and then can make rocking arm 34 and link assembly 33 butt in the tucking subassembly 3 of keeping away from slip direction one side, make and keep moving downwards briquetting 32 among the tucking subassembly 3 of keeping away from slip direction one side, and keep the butt with the elastic needle selection piece, and then make the elastic needle selection piece reset, do not participate in weaving, because the controllable slip of briquetting, can shorten the effect of reducing briquetting 32 and elastic needle selection piece by a wide margin, reduce wearing and tearing, prolong both life, can effectively strengthen the anti fatigue strength of elastic needle selection piece, effectively prevent elastic needle selection piece fatigue fracture.

As shown in fig. 3 and 4, the needle pressing assembly 3 further includes a resetting assembly 35, and specifically, the resetting assembly 35 is a torque spring, preferably, the torque spring is disposed between an outer wall of one side of the connecting rod assembly 33 and an outer wall of one side of the base 31, the connecting rod assembly 33 is elastically urged by the torque spring to swing upwards, and because the connecting rod assembly 33 and the pressing block 32 are kept hinged, when the rocker arm 34 and the connecting rod assembly 33 are separated, the connecting rod assembly 33 is urged by the torque spring to rotate upwards, so that the pressing block 32 kept hinged with the connecting rod assembly 33 slides upwards in the base 31, and the pressing block 32 is away from the elastic selector jack, thereby resetting the elastic selector jack.

When the machine head body 1 slides to the right, the two rocker arms 34 simultaneously keep deflecting to the left, the rocker arms 34 on the right side of the machine head body 1 are separated from the connecting rod assemblies 33, then the connecting rod assemblies 33 are driven by the torque springs to deflect upwards, the pressing blocks 32 move upwards through the connecting rod assemblies 33, the pressing blocks 32 on the right side of the machine head body 1 keep lifting upwards, the pressing blocks 32 and the elastic needle selectors are prevented from contacting for a long time, and the pressing blocks 32 on the left side of the machine head body 1 are abutted through the rocker arms 34 and the connecting rod assemblies 33, so that the pressing blocks 32 on the left side of the machine head body 1 are pressed downwards.

The needle pressing assembly 3 can reduce the friction times of the pressing block 32 and the elastic needle selection piece, namely, the needle selection times are reduced, and the operation speed of the head is lower than that of normal knitting when the needle is selected, so that the operation speed of the head can be increased by reducing the needle selection times, and the knitting efficiency can be further improved.

As shown in fig. 3, the link assembly 33 includes a first link 331 and a second link 332, specifically, one end of the first link 331 is rotatably connected to one end of the second link 332 through a connecting pin, one end of the first link 331 away from the second link 332 is rotatably connected to an outer wall of the press block 32 side through a connecting pin, one end of the second link 332 away from the first link 331 and an outer wall of the base 31 side are rotatably connected through a straight pin, preferably, one end of a torsion spring abuts against the outer wall of the base 31 side, the other end of the torsion spring abuts against the outer wall of the second link 332 side, and one end of the second link 332 is driven to rotate upward by the elasticity of the torsion spring.

When the hand-held tool is used, the second connecting rod 332 is kept rotating upwards through the torsion spring, and because one end of the first connecting rod 331 is kept hinged to the second connecting rod 332 and the other end of the first connecting rod 331 is kept hinged to one end of the pressing block 32, when the second connecting rod 332 keeps rotating upwards, the pressing block 32 can be driven to move upwards through the rotation of the first connecting rod 331, and meanwhile, a hinged point of the first connecting rod 331 and the second connecting rod 332 moves towards the direction of the hand head body 1.

As shown in fig. 3, a first limiting portion 321 is disposed on the outer wall of one side of the press block 32, a connecting groove is disposed on the outer wall of one side of the handpiece body 1, specifically, the connecting groove is matched with the shape of the press block 32, the press block 32 keeps sliding connection with the handpiece body 1 through the connecting groove, specifically, the first limiting portion 321 is a rectangular plate-shaped structure, and the first limiting portion 321 is disposed at one end of the press block 32 close to the needle pressing assembly 3, so that when the press block 32 moves downward under the pushing of the connecting rod assembly 33, the press block 32 is abutted against the handpiece body 1 through the first limiting portion 321, and further, the press block 32 is limited from moving downward too long to exert an excessive pressure on the elastic needle selection piece.

Fixed mounting has the spacing portion 311 of second on the outer wall of base 31 one side, and is concrete, and the spacing portion 311 of second is the limiting plate of rectangle, and the spacing portion 311 of second is located in one side of link assembly 33, and is preferred, has seted up the spacing groove on the outer wall of the spacing portion 311 one side of second, through spacing groove one side reason and torque spring one end butt, can make things convenient for the workman to install torque spring. The second limiting portion 311 is mounted on one side of the base 31 departing from the machine head body 1, so that when the connecting rod assembly 33 is pushed down to rotate towards the inside of the base 31 by abutting against the rocker arm 34, the connecting rod assembly 33 can be abutted against the second limiting portion 311, and the inward rotation amplitude of the rocker arm 34 is prevented from being too large by the connecting rod assembly 33.

As shown in fig. 3, specifically, the rocker arm 34 is an arc-shaped structure, a mounting groove is fixedly formed in one end of the arc-shaped structure of the rocker arm 34, a magnetic attraction portion 342 is fixedly mounted in the mounting groove, the magnetic attraction portion 342 is matched with the mounting groove in shape, the magnetic attraction portion 342 can be embedded into the mounting groove, the magnetic attraction portion 342 is conveniently mounted in the mounting groove by a worker, preferably, the magnetic attraction portion 342 is a permanent magnet, one end of the arc-shaped structure of the rocker arm 34 is rotatably connected to the outer wall of one side of the head body 1, the abutting portion 341 is arranged on the outer wall of one side of the arc-shaped structure, the abutting portion 341 is located on one side of the magnetic attraction portion 342, the abutting portion 341 is an inward concave triangular surface, the structure of the inward concave triangular surface can be attached to the connecting rod assembly 33 in the needle pressing assembly 3, the connecting rod assembly 33 is conveniently embedded into the rocker arm 34, and the connecting rod assembly 33 and the abutting portion 341 are kept abutted.

As shown in fig. 4, a guide portion 312 is fixedly disposed on an outer wall of one side of the base 31, specifically, the guide portion 312 is a rectangular plate-shaped structure, a sliding groove is formed on the outer wall of one side of the guide portion 312, one end of the press block 32 is slidably connected to the guide portion 312 through an opening, so that the press block 32 and the base 31 maintain a sliding connection, the sliding direction of the press block 32 can be limited by maintaining the sliding connection between the guide portion 312 and the press block 32, the press block 32 maintains a fixed direction in the guide portion, and the elastic selector jack is maintained to deflect by the sliding of the press block 32.

As shown in fig. 11, the brace assembly 2 includes a brace body 21 and a driving assembly 22, the driving assembly 22 is disposed on the outer wall of the base, a guide groove is opened on the outer wall of the brace body 21, a guide pin is disposed on the base, the brace body 21 is slidably coupled to the guide groove by the guide groove and the guide pin, preferably, the guide groove has an inclined structure, and the number of the guide grooves is plural, and the sliding coupling is maintained by the plural guide grooves and the guide pin, so that the stability of the brace body 21 during sliding can be improved. The driving assembly 22 is preferably a driving motor, a turbine body and a bearing, specifically, the brace body 21 is movably connected with the output end of the driving motor through a guiding groove at one end, the turbine body is installed at the output end of the driving motor, a turbine groove is formed in the outer wall of one side of the turbine body, the bearing is slidably connected in the turbine groove, and the bearing is connected with the brace body 21 through a connecting pin, so that the brace body 21 can be driven to keep sliding towards the handpiece body 1 on the base through the turbine and the bearing when the output end of the driving motor keeps rotating. Thereby allowing the rocker arm 34 to remain magnetically connected with the brace body 21. Preferably, the gap between rocker arm 34 and brace body 21 is 1 mm-2 mm, leave the gap between rocker arm 34 and the brace body 21 and can prevent to lead to installing the one end tenesmus of magnetism portion 342 and leading to rocker arm 34 one end and brace body 21 to bump when rocker arm 34 one end is extended aircraft nose body 1 too much, and is further, 3-4 mm is left to the outer fringe apart from aircraft nose body 1 edge after brace body 21 retracts, the one end of rocker arm 34 is outstanding in aircraft nose body 1 edge promptly, thereby make rocker arm 34 be located brace body 21 top all the time, can further prevent that rocker arm 34 and brace body 21 from bumping.

As shown in fig. 5, as a first embodiment of the present invention, the pressing block 32 is an integrally formed structure, and the pressing needle tip 322 disposed thereon abuts against the elastic selector jack to push the elastic selector jack to retract. A connecting end is provided at one end of the press 32, and the press 32 is held in sliding connection with the guide 312 via the connecting end. The integral forming of the pressing block 32 can reduce the production cost.

As shown in fig. 6 and 7, as a second embodiment of the present invention, a connecting end is provided at one end of the pressing block 32, a waist groove is opened at the outer wall of the connecting end, the pressing pin tip 322 is fixedly provided at the outer wall of the pressing block 32, the pressing block 32 keeps sliding connection with the guide part 312 through the connecting end, and is movably connected with the first connecting rod 331 of the connecting rod assembly 33 through a waist groove formed on the outer wall of the connecting end and a connecting pin, a compression spring is arranged between the inner wall at one side of the connecting end and the outer wall at one side of the connecting pin, so that when the pressing block 32 is pushed by the connecting rod assembly 33 to move downwards and is abutted with the elastic needle selection sheet and the elastic needle selection sheet is moved to the extreme position, the elastic needle selection sheet extrudes the needle pressing tip end 322, and the pressing block 32 moves upwards to push the compression spring, so that the damage of the elastic needle selection piece caused by the excessive pressing of the needle pressing tip 322 is prevented, and the service life of the elastic needle selection piece can be prolonged.

As shown in fig. 8, 9 and 10, as a third embodiment of the present invention, a pressing pin tip 322 is movably disposed in the pressing block 32, an accommodating groove is arranged on the outer wall of one side of the pressing block 32, a pressing plate is connected in the accommodating groove through a countersunk head screw thread, the tip 322 of the pressing pin is arranged in the accommodating groove in a sliding way, a compression spring is arranged between the countersunk head screw and the tip 322 of the pressing pin, the movement direction of the compression spring is limited by a pressing plate, the compression spring is prevented from being ejected outwards, after the pressing block 32 is pushed by the connecting rod assembly 33 to move downwards and abut against the elastic needle selection piece and move the elastic needle selection piece to the extreme position, the elastic needle selection sheet will press the needle pressing tip 322 to make the needle pressing tip 322 slide in the accommodation groove, and the motion range of the pressing pin tip 322 can be adjusted by changing the type of the countersunk head screw, and the movement is more stable compared with the movement using the waist groove.

The movable needle pressing tip 322 can effectively prevent the deformation of the elastic needle selection piece caused by pressing overload, excessive abrasion, unstable adsorption of the elastic needle selection piece caused by large instantaneous rebound force and other hidden dangers.

This article mention torque spring, its elastic coefficient accords with the technical requirement of the technical scheme of the utility model.

It will be appreciated by those skilled in the art that other similar connections may be used to implement the present invention. Such as welding, bonding, or screwing.

While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.

Claims

1. The controllable telescopic needle selecting mechanism of the high-speed glove knitting machine comprises a machine base and a machine head body (1) arranged on the machine base in a sliding mode and is characterized by further comprising a brace component (2) arranged on the machine base in a sliding mode and needle pressing components (3) arranged at the left end and the right end of the machine head body (1) respectively, wherein each needle pressing component (3) comprises a base (31), a pressing block (32), a connecting rod component (33) and a rocker arm (34), the rocker arms (34) are magnetically connected with the brace component (2), and the needle pressing components (3) slide along with the machine head body (1) so that the rocker arms (34) in the needle pressing components (3) opposite to the machine head body (1) in moving direction abut against the connecting rod components (33) and abut against the pressing blocks (32) to move downwards and abut against elastic needle selecting pieces.

2. The controllable telescopic needle selection mechanism of the high-speed glove knitting machine is characterized in that the needle pressing assembly (3) further comprises a resetting assembly (35), the resetting assembly (35) is arranged between the base (31) and the connecting rod assembly (33), and the resetting assembly (35) drives the connecting rod assembly (33) to rotate so as to enable the pressing block (32) to keep moving vertically and upwards.

3. The controllable telescopic needle selection mechanism of the high-speed glove knitting machine is characterized in that the connecting rod assembly (33) comprises a first connecting rod (331) and a second connecting rod (332) which are hinged with each other, one end of the first connecting rod (331) is rotatably connected to the pressing block (32), one end of the second connecting rod (332) is rotatably connected to the base (31), and the connecting rod assembly (33) is abutted to one end of the rocker arm (34) through the hinged point of the first connecting rod (331) and the second connecting rod (332).

4. The controllable telescopic needle selection mechanism of the high-speed glove knitting machine is characterized in that a first limiting part (321) is arranged on the pressing block (32), the pressing block (32) is connected to the base (31) in a sliding mode, and the pressing block (32) is abutted to the machine head body (1) through the first limiting part (321).

5. The controllable telescopic needle selection mechanism of the high-speed glove knitting machine according to claim 1, characterized in that a second limiting part (311) is arranged on the base (31), and the second limiting part (311) is abutted against the connecting rod assembly (33) and limits the connecting rod assembly (33) to rotate.

6. The controllable telescopic needle selection mechanism of the high-speed glove knitting machine is characterized in that the rocker arm (34) comprises an abutting part (341) and a magnetic part (342), the magnetic part (342) is arranged at one end of the rocker arm (34), the rocker arm (34) is magnetically connected with the brace assembly (2) through the magnetic part (342), the abutting part (341) is arranged at one side of the magnetic part (342), and the abutting part (341) is kept in abutting contact with the connecting rod assembly (33).

7. The controllable telescopic needle selection mechanism of the high-speed glove knitting machine is characterized in that a guide part (312) is arranged on the base (31), and the pressing block (32) is in sliding connection with the base (31) through the guide part (312).

8. The controllable telescopic needle selection mechanism of the high-speed glove knitting machine is characterized in that the brace assembly (2) comprises a brace body (21) and a driving assembly (22), the driving assembly (22) is arranged on the machine base, the brace body (21) is connected to the machine base in a sliding mode, and the driving assembly (22) is in transmission connection with the brace body (21).

9. The controllable telescopic needle selection mechanism of the high-speed glove knitting machine according to claim 1 is characterized in that a needle pressing tip (322) is arranged on the pressing block (32), and the pressing block (32) is abutted with the elastic needle selection piece through the needle pressing tip (322).