Transfer needle in-out driving mechanism

Abstract

The utility model belongs to the technical field of hosiery machines, and particularly relates to a transfer needle inlet and outlet driving mechanism which solves the problems that the movement synchronism of all transfer needles is difficult to guarantee and the transmission efficiency between a driving structure and the transfer needles is low. The transfer needle in-out driving mechanism comprises an annular disc body, a plurality of needle grooves are evenly distributed in the annular disc body in the circumferential direction, transfer needles are connected into the needle grooves in a sliding mode, the transfer needles are connected with elastic pieces and have the trend of moving towards the axis of the annular disc body, and the transfer needles are further in transmission connection with an axial driving structure. The needle grooves can move away from the axis of the annular disc body and extend in the radial direction on the horizontal plane, or the extending direction of the needle grooves intersects with the axis of the annular disc body, but the needle grooves incline in the horizontal plane. The effects that the transmission efficiency is high and the movement synchronism of the transfer needle is guaranteed are achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the hosiery machine technical field, especially relate to a transfer needle in and out drive mechanism. BACKGROUND

[0002] Hosiery machine is a kind of machine to knit socks, mainly including sock knitting and sock sewing head two parts, after sock knitting is completed, the sock in needle cylinder needs to be transferred to the sewing head device to sew head, the transfer operation is generally realized by being provided with transfer disk of transfer needle, transfer disk grabs the sock on needle cylinder, and moves to the sewing head device.

[0003] Patent with publication number CN101970739B discloses a pickup device for picking up tubular knitted articles from a circular hosiery machine for hosiery and for transferring the articles to a unit adapted to perform additional processing on the articles, comprising: an annular pickup body supporting pickup pieces, the pickup pieces being slidable in a radial direction relative to the pickup body, the pickup body being coaxially arrangeable around a needle cylinder of a circular hosiery machine for hosiery, so that each of the pickup pieces faces laterally towards a needle of the circular hosiery machine; an actuating device arranged to act on the pickup pieces to move them towards or away from an axis of the pickup body, so as to bring each pickup piece into engagement or out of engagement with the needle of the circular hosiery machine it faces, each of the pickup pieces being adapted to pick up a knitted loop held on the needle, characterized in that an end of each of the pickup pieces, which is directed towards the axis of the pickup body, has a seat, which is engageable with an area of the needle shank of the needle, which is arranged close to a needle tongue of the needle on an opposite side relative to a needle head of the needle, and in that the actuating device comprises a resilient device acting on the pickup pieces to slide them towards the axis of the pickup body, and a radial pusher acting on the pickup pieces to slide them away from the axis of the pickup body against the action of the resilient device.

[0004] However, the prior art described above pushes the transfer needle in and out of action in the radial direction by multiple radial pushers enclosed to form a circle. On the one hand, it is difficult to simply realize the synchronous driving of each radial pusher, and on the other hand, as the radial movement proceeds, the radius of the transfer needle arrangement changes, and the corresponding arc of the radial pusher also changes. The radial pusher is a rigid arc-shaped member and cannot adapt to changes, that is, the arc and arc length are always constant. Therefore, for a single radial pusher, the pushing distance of each transfer needle is different, and the pushing distance of the transfer needle in the middle is greater than that of the transfer needles on both sides. Therefore, it is difficult to ensure the synchronous movement of each transfer needle, and in the process of radial pushing, the transfer needles on both sides slide relative to the arc-shaped inner contact surface of the radial pusher. The sliding friction reduces the driving efficiency. Furthermore, since each radial pusher needs to move to the center of the circle, a certain gap needs to be left between each pusher, and the transfer needle arrangement needs to avoid this gap position, which increases the requirements for the transfer needle arrangement and limits the maximum movement distance of the radial pusher. Practical new type content

[0005] The purpose of the present application is to solve the above-mentioned problems existing in the prior art, and a transfer needle in-out driving mechanism is provided.

[0006] In order to realize the purpose of the present application, the following technical solutions can be used:

[0007] A transfer needle in-out driving mechanism, comprising a ring-shaped disc body, a plurality of needle grooves are uniformly distributed on the ring-shaped disc body, a transfer needle is slidably connected in the needle groove, the transfer needle is connected with an elastic member and has a tendency to move towards the axis of the ring-shaped disc body, the transfer needle is also connected with an axial driving structure transmission and can move away from the axis of the ring-shaped disc body, the needle groove extends radially in the horizontal plane, or the extension direction of the needle groove intersects with the axis of the ring-shaped disc body but is inclined in the horizontal plane.

[0008] The utility model mainly controls the in-out movement of transfer needle, transfer needle slides in the needle slot of annular disc body, can stretch in under the action of elastic member, the transfer hook of transfer needle front end cooperates with vertical needle and transfers the loop of sock tube when stretching, the cooperation details are prior art, do not do specific development, axial driving structure can drive to transfer needle on axial movement, realize the retraction action of transfer needle in needle slot to let the place, axial driving mode compares to radial driving, can realize through a driving piece, avoids the problem that multiple radial pushers need to consider pusher movement synchronization, also is favorable to the movement synchronization of transfer needle, the transmission between can realize through such as slope etc.

[0009] In the transfer needle in-out driving mechanism, the axial driving structure includes a compression ring, the compression ring is axially and vertically slidably connected to the annular disc body, the compression ring is connected to the lifting driving assembly, and a transmission structure is arranged between the compression ring and the transfer needle.

[0010] The axial driving structure specifically controls the movement of the transfer needle through the compression ring, the transmission structure is used for converting the axial movement of the compression ring into the radial or nearly radial movement of the transfer needle, and the lifting driving assembly is used for providing the driving force required by the compression ring lifting.

[0011] In the transfer needle in-out driving mechanism, the cross section of the compression ring is T-shaped, including a sliding part at the upper portion, the annular disc body is provided with an annular sliding groove with an opening downward, and the sliding part is slidably connected to the annular sliding groove.

[0012] The compression ring is slidably connected to the annular sliding groove of the annular disc body through the circular sliding part, a limiting step surface is arranged between the lower end of the sliding part and the main body part of the compression ring, the limiting step surface abuts against the inner top surface of the annular disc body, and is used for limiting the highest lifting position; the thickness and radius of the annular sliding groove and the sliding part are adapted to each other, and both extend in the axial direction, so that the axial sliding of the compression ring is ensured.

[0013] In the transfer needle in-out driving mechanism, the lifting driving assembly includes a pneumatic channel arranged on the annular disc body, the inner end of the pneumatic channel is in communication with the top of the annular sliding groove, the gas inlet at the outer end is connected to the high-pressure gas generating assembly, and a circumferential sealing assembly is arranged between the compression ring and the annular sliding groove.

[0014] The lifting driving assembly can realize corresponding driving purposes in a pneumatic manner. The high-pressure gas generating assembly inputs high-pressure gas into a cavity between the top surface of the annular chute and the top surface of the sliding part through a pneumatic channel. An annular groove is arranged on the top surface of the sliding part. A circumferential sealing assembly is used to ensure the sealing of the cavity. The gas pressure can push the compression ring downward, which is similar to the working principle of a pneumatic cylinder. When reverse movement is needed, the switch valve between the compression ring and the sliding part can be opened to release the high-pressure gas in the cavity and be pushed back by the elastic member or other corresponding driving assemblies. Even, the pneumatic channel can be used to extract the internal air to form negative pressure to attract the compression ring upward to realize the lifting driving of the compression ring. The pneumatic driving mode has low requirements for the space, only needs to leave corresponding pneumatic channels and form corresponding sealed cavities, and is beneficial to the compactness of the structure. The high-pressure gas generating assembly and the switch valve between the gas inlet and the compression ring are prior art and are not described here.

[0015] Further, the circumferential sealing assembly includes at least two sealing rings arranged on the inner and outer sides of the compression ring, respectively. The sealing rings are arranged in the inner and outer sealing grooves. The outer sealing groove is arranged on the outer side wall of the sliding part or the annular chute. The inner sealing groove is arranged on the inner side wall of the compression ring or the annular chute.

[0016] In the above-mentioned transfer needle driving mechanism, the transmission structure includes a first transmission inclined surface arranged on the lower part of the compression ring. The first transmission inclined surface is inclined radially outward. The first abutting portion at the rear end of the transfer needle is in sliding abutment with the first transmission inclined surface.

[0017] Alternatively, the transmission structure includes a second transmission inclined surface arranged on the rear end of the transfer needle. The second transmission inclined surface is inclined radially inward. The second abutting portion on the lower part of the compression ring is in sliding abutment with the second transmission inclined surface.

[0018] The transmission structure realizes axial-to-radial or similar radial transmission through the inclined surfaces and abutting portions arranged on the compression ring and the annular disc, respectively. It is preferred that the first transmission inclined surface is arranged on the compression ring and the first abutting portion is arranged on the transfer needle. As an optimization, chamfers are arranged at the ends of the first and second abutting portions. The chamfers can be flat or arc-shaped to avoid excessive wear and affect the in-out path range of the transfer needle.

[0019] In the above-mentioned transfer needle driving mechanism, the needle groove is inclined in the horizontal plane, and one side of the annular disc is higher than the other side. The inclination angle of the needle groove is between 0-10 degrees.

[0020] The needle groove is preferably in an inclined state with a high inner portion and a low outer portion, the inclination direction being opposite to the inclination direction of the transmission slope surface, the angle between the pressure direction of the compression ring transmitted to the transfer needle through the transmission slope surface and the bottom surface of the needle groove being smaller, so that the component force of the pressure perpendicular to the bottom surface of the needle groove is smaller, thus reducing the friction between the transfer needle and the bottom surface of the needle groove, and achieving the effect of improving the driving efficiency. The inclination angle is in a suitable range of 0-10 degrees, and preferably not more than 5 degrees, to ensure the smooth cooperation of the transfer hook and the vertical needle.

[0021] In the transfer needle in-out driving mechanism, the elastic member includes an elastic hoop, the rear end of the transfer needle is provided with an elastic member mounting port which is open and radially outward, and the elastic hoop is arranged in the elastic member mounting port and is in a stretched state.

[0022] The plurality of transfer needles are arranged in a ring shape on the ring-shaped disc body, and the elastic member is sleeved on the needle group arranged in a ring shape through the elastic hoop. The elastic hoop can be specifically an elastic band, which is flexible to the inward thrust of each transfer needle. The thrust can be adaptively changed when the transfer needle is forwardly extended to cooperate with the vertical needle, so as to avoid rigid impact with the vertical needle and ensure stable cooperation of the two.

[0023] In the transfer needle in-out driving mechanism, the transfer needle includes a linear needle body which is slidingly connected in the needle groove, the front end of the needle body is provided with a transfer hook, one side of the transfer hook close to the axis of the ring-shaped disc body is provided with a positioning vertical groove, the rear end of the needle body is provided with a first abutting portion which is protruded upward, the radially outer side of the first abutting portion and the rear end of the needle body are provided with an elastic member mounting port for accommodating the elastic member, and the radially inner side of the first abutting portion and the top surface of the needle body are provided with a limiting step which abuts against the ring-shaped disc body.

[0024] The needle body of the transfer needle is in a linear sheet structure, the front end of the needle body is provided with a transfer hook, the rear end of the needle body is provided with a first abutting portion and an elastic member mounting port, the inner side groove wall of the positioning vertical groove of the front end of the transfer hook is a vertical surface, to ensure cooperation and abutment with the vertical needle, and the limiting step on the inner side of the first abutting portion is used to limit the minimum distance between the first abutting portion and the installation area side wall of the ring-shaped disc body, to ensure that the first abutting portion always slides on the first transmission slope surface.

[0025] In the transfer needle in-out driving mechanism, the ring-shaped disc body is uniformly distributed with at least three axially extending pull rod mounting holes in the circumferential direction, a pull rod bolt is arranged in the pull rod mounting hole, an annular boss is arranged on the inner wall of the pull rod mounting hole, a compression spring is arranged between the annular boss and the bolt head of the pull rod bolt, and the lower end of the pull rod bolt is threadedly connected with the compression ring of the axial driving structure.

[0026] The pull rod bolt is connected with the pressing ring and is arranged in the pull rod mounting hole, which is beneficial to the positioning of the axial movement of the pressing ring, and a reset spring is arranged between the pull rod bolt and the pull rod mounting hole, which is used for providing elastic force for the upward movement reset of the pressing ring, that is, the pressing ring can be timely pulled up and reset after being pushed downward by the lifting driving assembly, so that the lifting and lowering control of the pressing ring is realized.

[0027] In the transfer needle in-out driving mechanism, the annular disc body comprises a main body in inverted U-shaped cross section and a bottom plate detachably capped on the lower opening of the main body, an installation area is formed in the main body, a needle slot in communication with the installation area is arranged between the lower end face of the inner ring of the main body and the top face of the bottom plate, and the top face of the needle slot is horizontal or inclined.

[0028] The annular disc body is composed of a main body and a bottom plate, the main body is in inverted U-shaped cross section, an installation area is formed in the concave part of the main body, the elastic member, the rear end of the transfer needle and the main part of the axial driving structure are located in the installation area, the bottom plate caps the installation area by means of bolts or the like, thereby protecting the components therein, and the fixing has flexible detachability, facilitating early assembly and later maintenance, a slot opening downward is arranged on the bottom end of the inner ring of the annular disc body, the top face of the bottom plate caps the slot opening to form a needle slot in the form of a through hole, thereby facilitating the disassembly and assembly of the transfer needle, and in addition, the top face of the slot opening and the area of the top face of the bottom plate in sliding contact with the transfer needle can be arranged in corresponding inclined states, thereby ensuring the realization of the slightly inclined radial movement path of the transfer needle.

[0029] Compared with the prior art, the utility model mainly has the following advantages:

[0030] 1. The axial driving structure can transmit axial movement to the transfer needle to realize the retraction of the transfer needle in the needle slot to make room, the axial driving mode can be realized by one driving member compared with the radial driving, which is beneficial to the synchronous movement of the transfer needle, and the layout density of the transfer needle is not excessively required, further, in order to increase the transmission efficiency, the needle slot can be specially arranged in inclined shape close to the radial with height difference between the inner end and the outer end.

[0031] 2. The axial driving structure specifically realizes the movement control of the transfer needle through the pressing ring, the transmission structure is used for converting the axial movement of the pressing ring into the radial or nearly radial movement of the transfer needle, and the lifting driving assembly is used for providing the driving force required by the lifting of the pressing ring.

[0032] 3. The lifting drive assembly achieves its driving purpose through pneumatic means. The high-pressure gas generating assembly inputs high-pressure gas into the cavity between the top surface of the annular slide groove and the top surface of the sliding part through the pneumatic channel. The gas pressure can push the pressure ring to move downward, similar to the working principle of a cylinder. This pneumatic drive method has low requirements for the installation space, only requiring the corresponding pneumatic channel and the formation of a corresponding sealed cavity, which is conducive to the compact structure.

[0033] 4. The needle groove is preferably inclined with the inside higher than the outside. The inclination direction is opposite to the inclination direction of the transmission slope. The angle between the pressure ring and the bottom surface of the needle groove is smaller, which makes the component of the pressure perpendicular to the bottom surface of the needle groove smaller. This reduces the friction between the transfer needle and the bottom surface of the needle groove, thereby improving the driving efficiency.

[0034] 5. The elastic element is fitted onto the ring-shaped transfer needle assembly via an elastic hoop. Its inward thrust on each transfer needle is flexible. This thrust can adapt to changes when the transfer needle extends forward to cooperate with the vertical needle, avoiding rigid impact with the vertical needle and ensuring stable cooperation between the two.

[0035] 6. The limiting step on the inner side of the first abutting part can limit the minimum distance between the first abutting part and the side wall of the mounting area of ​​the annular disc, ensuring that the first abutting part always slides in cooperation with the first transmission inclined surface.

[0036] 7. The tie rod bolt is connected to the pressure ring and passes through the tie rod mounting hole, which is beneficial for the positioning of the pressure ring's axial movement. In addition, a return spring is provided between the tie rod bolt and the tie rod mounting hole, which can pull the pressure ring back up in time after it is pushed down by the lifting drive assembly, thereby realizing the control of the pressure ring's rise and fall.

[0037] 8. The annular disc consists of two parts: an annular main body and a base plate. The concave part of the main body forms the installation area, and the base plate covers the installation area to protect the components therein. Moreover, the fixing is flexible and removable, which facilitates the initial assembly and subsequent maintenance. A slot with an open bottom is provided through the bottom perimeter of the inner ring of the annular disc. The top surface of the base plate covers the slot to form a through-hole needle groove, which facilitates the disassembly and assembly of the transfer needle. Attached Figure Description

[0038] Figure 1 This is a schematic cross-sectional view of the overall structure provided by this utility model (Example 1);

[0039] Figure 2 This is a cross-sectional schematic diagram of the main body of the annular disk provided by this utility model (Example 1);

[0040] Figure 3 This is a cross-sectional schematic diagram of the bottom plate of the annular disk provided by this utility model (Example 1).

[0041] Figure 4 This is a cross-sectional schematic diagram of the transfer needle provided by this utility model (Example 1);

[0042] Figure 5 This is a cross-sectional schematic diagram of the pressure ring provided by this utility model;

[0043] Figure 6 This is a schematic cross-sectional view of the overall structure provided by this utility model (Example 2).

[0044] In the figure, the components are: annular disc 1, main body 11, base plate 12, needle groove 13, axis 14, pull rod mounting hole 15, pull rod bolt 16, annular boss 17, return spring 18, mounting area 19, needle body sliding surface 20, transfer needle 2, needle body 21, positioning vertical groove 22, elastic element mounting port 23, limiting step 24, transfer hook 25, elastic element 3, elastic hoop 31, axial drive structure 4, pressure ring 41, sliding part 42, annular slide groove 43, lifting drive assembly 5, pneumatic channel 51, air inlet 52, transmission structure 6, first transmission inclined surface 61, first abutment part 62, circumferential sealing assembly 7, sealing ring 71, inner sealing groove 72, and outer sealing groove 73. Detailed Implementation

[0045] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0046] Example 1

[0047] Specific implementation examples Figures 1-5 As shown, the transfer needle in / out drive mechanism includes an annular disc 1. The annular disc 1 has several needle grooves 13 evenly distributed circumferentially. A transfer needle 2 is slidably connected in the needle grooves 13. The transfer needle 2 is connected to an elastic element 3 and has a tendency to move toward the axis 14 of the annular disc 1. The transfer needle 2 is also connected to an axial drive structure 4 and can move away from the axis 14 of the annular disc 1. The extension direction of the needle grooves 13 intersects the axis 14 of the annular disc 1 but is inclined in the horizontal plane.

[0048] Specifically, this mechanism is mainly used to control the in-and-out movement of the transfer needle 2. The transfer needle 2 slides in the needle groove 13 of the annular disc 1 and can extend inward under the action of the elastic element 3. When it extends, the transfer hook 25 at the front end of the transfer needle 2 cooperates with the vertical needle to transfer the coil of the sock. The axial drive structure 4 can transmit the axial movement to the transfer needle 2, so that the transfer needle 2 can retract in the needle groove 13 to make room. The transmission between them is achieved through the inclined plane. In order to increase the transmission efficiency, the needle groove 13 is specially designed to be inclined in a near-radial manner with a height difference between the inner and outer ends.

[0049] For illustration, the needle slots 13 and the transfer needles 2 are only shown at several positions on the cutting plane, and the rest of the circumferential distribution is not specifically shown.

[0050] As shown in FIG. 5, the axial driving structure 4 comprises a press ring 41, which is axially and slidably connected to the annular disc body 1, and is connected to the lifting driving assembly 5. A transmission structure 6 is arranged between the press ring 41 and the transfer needles 2. Figure 1 , 2 The press ring 41 has a T-shaped cross section, comprising a sliding portion 42 at the upper part. An annular sliding groove 43 is arranged in the annular disc body 1, and the sliding portion 42 is slidably connected to the annular sliding groove 43. The lifting driving assembly 5 comprises a pneumatic channel 51 arranged on the annular disc body 1, and the inner end of the pneumatic channel 51 is in communication with the top of the annular sliding groove 43. The outer end of the pneumatic channel 51 is connected to a high-pressure gas generating assembly (not shown in the figure), and a circumferential sealing assembly 7 is arranged between the press ring 41 and the annular sliding groove 43. The transmission structure 6 comprises a first transmission inclined surface 61 arranged at the lower part of the press ring 41, which is inclined radially outward, and a first abutting portion 62 at the rear end of the transfer needle 2 is in sliding abutment with the first transmission inclined surface 61.

[0051] Specifically, the axial driving structure 4 specifically controls the movement of the transfer needles 2 through the press ring 41, the transmission structure 6 is used to convert the axial movement of the press ring 41 into the radial movement of the transfer needles 2, and the lifting driving assembly 5 is used to provide the driving force required for the lifting of the press ring 41. The press ring 41 is slidably connected to the annular sliding groove 43 of the annular disc body 1 through the circular sliding portion 42. The thickness and radius of the annular sliding groove 43 and the sliding portion 42 are adapted to each other, and both extend in the axial direction, which ensures the smooth axial sliding of the press ring 41. The lifting driving assembly 5 can achieve the corresponding driving purpose by pneumatic means. The high-pressure gas generating assembly inputs high-pressure gas into the cavity between the top surface of the annular sliding groove 43 and the top surface of the sliding portion 42 through the pneumatic channel 51, and the circumferential sealing assembly 7 is used to ensure the sealing of the cavity. The gas pressure can push the press ring 41 to move downward, which is similar to the working principle of a pneumatic cylinder. This pneumatic driving method has lower requirements for the space, and only needs to leave corresponding pneumatic channels 51 and form corresponding sealing cavities, which is beneficial to the compactness of the structure. The transmission structure 6 achieves the transmission from the axial direction to the radial direction through the inclined surface and the abutting portion arranged on the press ring 41 and the annular disc body 1 respectively, and a chamfer is arranged at the end of the first abutting portion 62. The chamfer is arc-shaped, which avoids excessive wear and affects the range of the transfer needles 2.

[0052] In the embodiment, the circumferential sealing assembly 7 comprises two sealing rings 71 respectively located on the inner and outer sides of the compression ring 41, the sealing rings 71 are arranged in the inner sealing groove 72 and the outer sealing groove 73, the outer sealing groove 73 is arranged on the outer side wall of the sliding part 42, and the inner sealing groove 72 is arranged on the inner side wall of the annular sliding groove 43.

[0053] As an optimization of the embodiment, the needle groove 13 is inclined in the horizontal plane, and the side near the axis of the nearly annular disc body 1 is the high side, and the inclination angle of the needle groove 13 is between 0-5 degrees.

[0054] Specifically, the needle groove 13 is preferably in an inclined state of being higher inside and lower outside, and the inclination direction is opposite to that of the transmission inclined surface, and the angle between the direction of the pressure transmitted to the transfer needle 2 through the transmission inclined surface and the compression ring 41 and the bottom surface of the needle groove 13 is smaller, so that the component force of the pressure perpendicular to the bottom surface of the needle groove 13 is smaller, thus reducing the friction between the transfer needle 2 and the bottom surface of the needle groove 13, and achieving the effect of improving the driving efficiency.

[0055] As shown in Figure 1 , the elastic member 3 comprises an elastic hoop 31, the transfer needle 2 is provided with an elastic member mounting port 23 which is radially outwardly open at the rear end, and the elastic hoop 31 is arranged in the elastic member mounting port 23 and is in a stretched state.

[0056] Specifically, a plurality of transfer needles 2 are arranged in a ring on the annular disc body 1, and the elastic member 3 is sleeved on the ring-shaped needle group through the elastic hoop 31, and the elastic hoop 31 is specifically an elastic band, which is flexible to the inward thrust of each transfer needle 2, and the thrust can adaptively change when the transfer needle 2 is stretched forward to cooperate with the vertical needle, avoiding rigid impact with the vertical needle and ensuring stable cooperation between the two.

[0057] As shown in Figure 1 , 4 , the transfer needle 2 comprises a straight needle body 21 slidingly connected in the needle groove 13, the needle body 21 is provided with a transfer hook 25 at the front end, the transfer hook 25 is provided with a positioning vertical groove 22 near the axis 14 of the annular disc body 1, the needle body 21 is provided with a first abutting portion 62 protruding upward at the rear end, the elastic member mounting port 23 for accommodating the elastic member 3 is arranged between the radially outer side of the first abutting portion 62 and the rear end of the needle body 21, and the limiting step 24 is arranged between the radially inner side of the first abutting portion 62 and the top surface of the needle body 21, and the limiting step 24 abuts against the annular disc body 1.

[0058] Specifically, the needle body 21 of the transfer needle 2 is in a straight-line sheet structure, the front end of the needle body 21 is provided with a transfer hook 25, the rear end is provided with a first abutting portion 62 and an elastic element mounting port 23, the inner side groove wall of the positioning vertical groove 22 at the front end of the transfer hook 25 is a vertical surface, which ensures the cooperation and abutment with the vertical needle, and the limiting step 24 inside the first abutting portion 62 is used to limit the minimum distance between the first abutting portion 62 and the side wall of the installation area 19 of the annular disc body 1, so as to ensure that the first abutting portion 62 always slides on the first transmission inclined surface 61.

[0059] As shown in Figure 1 , 2 As shown in the drawings, the annular disc body 1 is uniformly distributed with three axially extending pull rod mounting holes 15, the pull rod mounting hole 15 is provided with a pull rod bolt 16, the inner wall of the pull rod mounting hole 15 is provided with an annular boss 17, the annular boss 17 and the bolt head of the pull rod bolt 16 are provided with a reset spring 18 in a compressed state, and the lower end of the pull rod bolt 16 is threadedly connected with the compression ring 41 of the axial driving structure 4.

[0060] Specifically, the pull rod bolt 16 is connected with the compression ring 41 and is simultaneously provided in the pull rod mounting hole 15, which is beneficial to the positioning of the axial movement of the compression ring 41, and the reset spring 18 is arranged between the pull rod bolt 16 and the pull rod mounting hole 15, which is used to provide the elastic force for the upward movement reset of the compression ring 41, that is, it can timely reset upward after the compression ring 41 is pushed downward by the lifting driving assembly 5, so as to realize the control of the lifting and lowering of the compression ring 41.

[0061] In the embodiment, the annular disc body 1 includes a main body 11 in an inverted U-shaped cross section and a bottom plate 12 detachably covering the lower opening of the main body 11, the main body 11 is formed with an installation area 19, and the lower end surface of the inner circle of the main body 11 and the top surface of the bottom plate 12 are provided with a needle groove 13 in communication with the installation area 19, the top surface of the needle groove 13 is inclined, and the bottom plate 12 is provided with a corresponding inclined needle body sliding surface 20.

[0062] Specifically, the annular disc body 1 is composed of a ring-shaped main body 11 and a bottom plate 12, the main body 11 is in an inverted U-shaped cross section, the inner recessed part of which forms an installation area 19, the elastic element 3, the rear end of the transfer needle 2 and the main part of the axial driving structure 4 are all located in the installation area 19, the bottom plate 12 is fixed by bolts to cover the installation area 19, which can protect the components therein, and the fixing has flexible detachability, which is convenient for early assembly and later maintenance, a slot opening downward is provided on the bottom end of the inner circle of the annular disc body 1, the top surface of the bottom plate 12 covers the slot to form a needle groove 13 in the form of a through hole, which is convenient for the disassembly and assembly of the transfer needle 2, in addition, the top surface of the slot and the area of the top surface of the bottom plate 12 in sliding contact with the transfer needle 2 are in a corresponding inclined state, which ensures the realization of the slightly inclined radial movement path of the transfer needle 2.

[0063] Specific working principle: when the transfer needle 2 needs to be retracted, the high-pressure gas generating assembly inputs air into the annular chute 43, the internal air pressure increases, the pressure ring 41 is pushed downward, the first transmission inclined surface 61 pushes down the first abutting portion 62 to push the transfer needle 2 outward, and the transfer needle 2 moves obliquely downward and outward in the needle groove 13. When the transfer needle 2 needs to be extended forward, the high-pressure gas generating assembly stops high-pressure input, the switch valve opens to discharge the internal high pressure, and the reset spring 18 pushes the pull rod bolt 16 upward to drive the pressure ring 41 to move upward, the elastic hoop 31 pushes the transfer needle 2 to move inward, the positioning vertical groove 22 at the front end of the transfer hook 25 is in abutment with the vertical needle, and the corresponding sock transfer is realized through the lifting action of the vertical needle.

[0064] Embodiment 2

[0065] The specific working principle of the embodiment is basically the same as that of the specific working principle of embodiment 1, and the difference lies in the needle groove 13.

[0066] Specific embodiments such as Figure 6 As shown in the figure, the needle groove 13 extends radially in the horizontal plane, the inner top surface of the needle groove 13 and the top surface of the bottom plate 12 are both horizontal, and the transfer needle 2 can move radially in the needle groove 13 to approach or move away from the axis 14 of the annular disc body 1.

[0067] The specific embodiments described herein are merely illustrative of the spirit of the utility model. Those skilled in the art to which the utility model belongs can make various modifications or supplements to the described specific embodiments or replace them with similar ways, but will not deviate from the spirit of the utility model or exceed the scope defined by the appended claims.

Claims

1. A transfer needle in-out driving mechanism, comprising a ring-shaped disc body (1), a plurality of needle slots (13) are uniformly distributed on the circumference of the ring-shaped disc body (1), a transfer needle (2) is slidably connected in the needle slot (13), characterized in that, The transfer needle (2) is connected with the elastic member (3) and has a tendency to move towards the axis (14) of the annular disc body (1), the transfer needle (2) is further connected with the axial driving structure (4) in transmission and can move away from the axis (14) of the annular disc body (1), the needle groove (13) extends radially in the horizontal plane, or the extending direction of the needle groove (13) intersects with the axis (14) of the annular disc body (1) but is inclined in the horizontal plane.

2. The transfer needle in and out drive mechanism of claim 1 wherein, The axial driving structure (4) comprises a press ring (41) which is axially and liftably slidably connected with the annular disc body (1), the press ring (41) is connected with the lifting driving assembly (5), and transmission structure (6) is arranged between the press ring (41) and the transfer needle (2).

3. The transfer needle access drive mechanism of claim 2, wherein, The cross section of the press ring (41) is T-shaped and comprises a sliding part (42) at the upper part, the annular disc body (1) is provided with an annular sliding groove (43) with an opening downward, and the sliding part (42) is slidably connected in the annular sliding groove (43).

4. The transfer needle access drive mechanism of claim 3, wherein, The lifting driving assembly (5) comprises a pneumatic channel (51) formed in the annular disc body (1), the inner end of the pneumatic channel (51) is communicated with the top of the annular sliding groove (43), the gas inlet (52) at the outer end is connected with the high-pressure gas generating assembly, and the circumferential sealing assembly (7) is arranged between the press ring (41) and the annular sliding groove (43).

5. The transfer needle access drive mechanism of claim 2 wherein, The transmission structure (6) comprises a first transmission inclined surface (61) arranged at the lower part of the press ring (41), the first transmission inclined surface (61) is inclined radially outward, and the first abutting part (62) at the rear end of the transfer needle (2) is slidably abutted with the first transmission inclined surface (61). Alternatively, the transmission structure (6) comprises a second transmission inclined surface arranged at the rear end of the transfer needle (2), the second transmission inclined surface is inclined radially inward, and the second abutting part at the lower part of the press ring (41) is slidably abutted with the second transmission inclined surface.

6. The transfer needle access drive mechanism of claim 1 wherein, The needle groove (13) is inclined in the horizontal plane, and the side close to the axis of the annular disc body (1) is the high side, and the inclination angle of the needle groove (13) is between 0-10 degrees.

7. The transfer needle access drive mechanism of claim 1 wherein, The elastic member (3) comprises an elastic hoop (31), the rear end of the transfer needle (2) is provided with an elastic member mounting port (23) with an opening radially outward, the elastic hoop (31) is arranged in the elastic member mounting port (23) and is in a stretched state.

8. The transfer needle access drive mechanism according to any one of claims 1-7, wherein, The transfer needle (2) comprises a linear needle body (21) slidably connected in the needle groove (13), the front end of the needle body (21) is provided with a transfer hook (25), the side close to the axis (14) of the annular disc body (1) of the transfer hook (25) is provided with a positioning vertical groove (22), the rear end of the needle body (21) is provided with a first abutting part (62) protruding upward, the radially outer side of the first abutting part (62) and the rear end of the needle body (21) are provided with an elastic member mounting port (23) for accommodating the elastic member (3), the radially inner side of the first abutting part (62) and the top surface of the needle body (21) are provided with a limiting step (24), and the limiting step (24) is abutted with the annular disc body (1).

9. The transfer needle access drive mechanism according to any one of claims 1-7, wherein, The annular disc body (1) is uniformly distributed with at least three axially extending pull rod mounting holes (15) in the circumferential direction, a pull rod bolt (16) is arranged in the pull rod mounting hole (15), an annular boss (17) is arranged on the inner wall of the pull rod mounting hole (15), a reset spring (18) in a compressed state is arranged between the annular boss (17) and the bolt head of the pull rod bolt (16), and the lower end of the pull rod bolt (16) is threadedly connected with the pressing ring (41) of the axial driving structure (4).

10. The transfer needle access drive mechanism according to any one of claims 1-7, wherein, The annular disc body (1) comprises a main body (11) with an inverted U-shaped cross section and a bottom plate (12) detachably covered on the lower opening of the main body (11), the main body (11) is formed with an installation area (19) therein, a needle slot (13) in communication with the installation area (19) is arranged between the lower end surface of the inner ring of the main body (11) and the top surface of the bottom plate (12), the top surface of the needle slot (13) is horizontal or inclined, and the bottom plate (12) is provided with a corresponding horizontal or inclined needle body sliding surface (20).

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