CN110791871A

CN110791871A - Pick-up device for picking up tubular knitted articles on a circular knitting machine and transferring them to another processing position

Info

Publication number: CN110791871A
Application number: CN201811352237.0A
Authority: CN
Inventors: 林振祐; 詹孟勋
Original assignee: Da Kong Enterprise Co Ltd
Current assignee: Da Kong Enterprise Co Ltd
Priority date: 2018-08-01
Filing date: 2018-11-14
Publication date: 2020-02-14
Also published as: TW202007805A

Abstract

The invention relates to a pick-up device for picking up tubular knitted articles on a circular knitting machine and transferring them to another processing position, mainly comprising a movable ring, driven by an actuating unit to rotate with its central axis in a first or second opposite direction; the fixed ring is arranged on the movable ring, and the movable ring is movably positioned between the dial and the fixed ring; and the connecting rod mechanism is arranged between the movable ring and the fixed ring and is linked with the movable ring, when the actuating unit drives the movable ring to rotate towards the first direction, the connecting rod mechanism is driven to actuate to be in a contraction state, and when the actuating unit drives the movable ring to rotate towards the second direction, the connecting rod mechanism is driven to actuate to be in an expansion state, so that the actions of taking socks, contracting the bundles or withdrawing from the needle groove are completed.

Description

Pick-up device for picking up tubular knitted articles on a circular knitting machine and transferring them to another processing position

Technical Field

The present invention relates to a circular knitting machine for hosiery or the like, and more particularly to a pick-up device for picking up tubular knitted articles on a circular knitting machine and transferring them to another working position.

Background

Referring to fig. 1, in order to provide a prior art production apparatus 10 for producing tubular knitted articles such as socks, which comprises a circular knitting machine 11, a reed assembly 12 and a pick-up device 13, the circular knitting machine 11 is provided for knitting a tubular knitted article with both ends open, the reed assembly 12 is provided for closing an opening at one end of the tubular knitted article, and the pick-up device 13 is provided for removing the tubular knitted article on the circular knitting machine 11 from the circular knitting machine 11 and transferring the tubular knitted article to the reed assembly 12, the procedures of knitting socks and sewing can be automatically completed by the main circular knitting machine 11, the reed assembly 12 and the pick-up device 13.

Referring to fig. 2 and 3, in order to show a perspective view and a cross-sectional view of the pick-up device 13 of the production apparatus 10, the pick-up device 13 mainly includes an annular pick-up member 131, a needle dial 132 and a turntable 133, the annular pick-up member 131 surrounds and defines a central axis 134, the needle dial 132 is mounted on the annular pick-up member 131, and the dial 132 has a plurality of needle slots 1321, each needle slot 1321 being arranged in a manner surrounding the central axis 134, the turntable 133 is divided into four regions from the inner circumference closest to the central axis 134 to the outer circumference farthest from the central axis 134, which are sequentially a first region to a fourth region, wherein a plurality of inclined long inclined slots 1331 are sequentially arranged on the first region to the fourth region, the inclined slots 1331 mean that the inclined slots 1331 have two ends, one end of each long inclined slot 1331 is closer to the central axis 134 than the other end, so that each long inclined slot 1331 is in an inclined state as shown in fig. 2.

As shown in fig. 3, the sock taking needles 135 (four sock taking needles are shown in fig. 3) are respectively installed in the needle slots 1321 of the needle disc 132, and as the rotary disc 133 is rotated along the circumferential direction of the rotary disc 133 by an actuating unit 136 (e.g., actuated by a fluid such as gas or liquid), the heel portions 1351 of the adjacent four sock taking needles 135 are respectively inserted into the slot slots 1331 of the first to fourth zones, so that the sock taking needles 135 are guided by the slot slots 1331 to move in a direction away from the central axis 134.

It should be noted that, before this, the structure used initially is that a plurality of sock picking needles 135 are spanned between the two ends of each slot 1331, that is, because the number of slots 1321 on the dial 132 is large and the slot 1331 on the dial 133 is long, each slot 1331 must span a plurality of sock picking needles 135 in order to make the slot 1331 long enough to guide the displacement of the sock picking needles 135; the long inclined slot 1331 is too long, so that the long inclined slots 1331 corresponding to the adjacent sock taking needles 135 cannot be adjacently arranged in the same area on the turntable 133; in order to solve the problem that the corresponding slots 1331 of the adjacent stocking needles 135 cannot be arranged in the same area on the turntable 133, the slots 1331 are arranged in a manner that the slots 1331 are sequentially arranged from the first area of the turntable 133 to the fourth area of the turntable 133, and are repeatedly arranged according to the arrangement sequence of the first area to the fourth area, and after the slots 1331 of the turntable 133 are arranged, as shown in fig. 2 and 3, the heel portions 1351 of the adjacent stocking needles 135 correspond to the slots 1331 located in different areas on the turntable 133, so that the heel portions 1351 of the adjacent stocking needles 135 need to be arranged in different positions, if the turntable 133 is divided into four areas, each stocking needle 135 must have different shapes with four heel portions 1351 located in different positions, the heel portions 1351 of the different stocking needles 135 are provided with the slots 1331 corresponding to different areas on the turntable 133, and when a user installs each stocking needle 135 on each slot 1321, the sock taking needles 135 corresponding to the first area to the fourth area are sequentially arranged in the needle slot 1321, and then the sock taking needles 135 corresponding to the first area are sequentially arranged to the sock taking needles 135 corresponding to the fourth area, so that the adjacent sock taking needles 135 of each sock taking needle 135 are all long inclined slot holes 1331 corresponding to different areas on the rotating disc 133.

However, since the sock picking needles 135 have different shapes, different molds are required for manufacturing, and parts cannot be shared, and the heels 1351 of the sock picking needles 135 are located at different positions and must be arranged in a certain order in assembly, which not only causes inconvenience in assembly and complexity in assembly, but also causes a drawback of an excessively large volume due to the long inclined slots 1331 and the long diameter of the rotary plate 133 caused by the arrangement of the long inclined slots 1331.

In addition, refer to the invention patent with European patent publication No. EP 2250306B 1, wherein the similar turntable structure is disclosed; the turntable needs to be matched with the long inclined slotted hole, the bolt column and the inner groove together, so that the turntable can control the plurality of sock taking needles to approach or be far away from the central axis.

However, the aforementioned structure of the rotating disc for taking socks needs not only the long inclined slot hole to be matched with the bolt, but also the inner groove to complete the limiting movement, which results in the inconvenient assembly and alignment.

Disclosure of Invention

The aim of the invention is to solve the problem of complex assembly of the pick-up needles and thus the problem of the large diameter of the rotating disk, which results in an excessively large volume of the rotating disk, by means of a pick-up device for picking up tubular knitted articles on a circular knitting machine and transferring them to another processing station.

To solve the aforesaid drawbacks, the invention provides a pick-up device for picking up tubular knitted articles on a circular knitting machine and transferring them to another processing position, comprising: a movable ring coaxially arranged on a needle dial and driven by an actuating unit to rotate towards a first direction or a second direction relative to the needle dial by the central axis of the movable ring, a fixed ring coaxially fixed on the movable ring, and the movable ring can be movably arranged between the needle dial and the fixed ring, a connecting rod mechanism arranged between the movable ring and the fixed ring and linked with the movable ring, when the actuating unit drives the movable ring to rotate towards the first direction, the connecting rod mechanism acts to be in a binding state; when the actuating unit drives the movable ring to rotate towards the second direction, the link mechanism is actuated to be in an expanded state.

In a preferred embodiment, the fixing ring has a fixing ring body and a plurality of fixing arms, each of the fixing arms extends radially outward from an outer periphery of the fixing ring body, and each of the fixing arms is equidistantly spaced.

In a preferred embodiment, the movable ring has a plurality of concave arc segments and a plurality of convex arc segments, each of the concave arc segments and each of the convex arc segments are disposed alternately, each of the concave arc segments is disposed corresponding to the fixed arm, the width of the fixed arm is smaller than the arc length of the corresponding concave arc segment, and each of the convex arc segments is smaller than the angular distance between two adjacent fixed arms.

In a preferred embodiment, the link mechanism includes a plurality of limiting blocks, a plurality of pivoting members and a plurality of guide rods, each limiting block is arc-shaped, and the two ends of each limiting block are respectively provided with a first embedding section and a second embedding section, the two adjacent limiting blocks are respectively embedded and connected with each other in a separable way through the respective first embedding section and the second embedding section, each limiting block is arranged in the inner circle range defined by the inner circle of the movable ring, one end of each pivoting piece is pivoted on the corresponding convex arc section of the movable ring, one end of each pivoting piece, which is opposite to the convex arc section, is pivoted on the corresponding limiting block, and each limiting block is correspondingly provided with two guide rods in a penetrating way, so that the number of the limiting blocks is at least equal to that of the pivoting pieces, the number of the guide rods is at least twice of that of the limiting blocks, and one end of each guide rod corresponding to each limiting block is fixed on the fixing ring.

In a preferred embodiment, the two guide rods corresponding to the limiting blocks are parallel to each other.

In a preferred embodiment, the actuating unit is connected to one of the convex arc segments.

In a preferred embodiment, the actuating unit has a driving component and a driving component, the driving component is connected to one side of the driving component, and one side of the driving component far away from the driving component is connected to one of the convex arc sections.

In a preferred embodiment, the driving member has a first arm section, a connecting section and two second arm sections, the first arm section is pivotally connected to the driving member, the first arm section is pivotally connected to a predetermined position between two ends of the connecting section opposite to one end of the driving member, two ends of the connecting section are respectively connected to the two second arm sections, and one end of each second arm section opposite to the connecting section is connected to the movable ring.

In a preferred embodiment, the connecting section is disposed adjacent to or in contact with the outer arc surface of the corresponding convex arc section, and the two second arm sections are disposed adjacent to or in contact with the ends of the corresponding convex arc section respectively.

In a preferred embodiment, the fixing ring has a plurality of recesses formed at intervals on the lower surface of the fixing ring body, each recess is disposed corresponding to each pivot, and the arc length of each recess is greater than the width of each pivot, so that the pivot can swing within the arc length of the corresponding recess.

In a preferred embodiment, the dial has a dial body and a plurality of needle grooves, the dial body is annular, each needle groove is annularly arranged on the inner circumference of the dial body, each needle groove is used for movably inserting a sock taking needle, each sock taking needle has a heel portion extending upwards, and one side of the heel portion facing the axis direction of the dial body abuts against the outer arc surface of each limiting block.

In a preferred embodiment, a concave portion is formed at the tail end of each sock taking needle, the concave portion extends from the needle groove towards the dial body and is exposed out of the needle groove, and an annular elastic member is sleeved in each needle groove, is positioned between the dial body and each needle groove and abuts against the concave portion of each sock taking needle.

In a preferred embodiment, the actuating unit is arranged at a predetermined position of an annular picking member on which the movable ring, the fixed ring and the dial are coaxially arranged.

In a preferred embodiment, the actuating unit is disposed at a predetermined position of an annular pick-up body, the annular pick-up member includes an annular pick-up body and an annular wall extending upward from an outer circumference of the annular pick-up body, and the movable ring, the fixed ring and the dial are coaxially disposed on the annular pick-up body and located within the annular wall.

In a preferred embodiment, the annular wall is provided with a plurality of fixing grooves and a plurality of accommodating grooves at angular intervals, each fixing groove corresponds to the arrangement of each fixing arm of the fixing ring, so that one end of each fixing arm far away from the fixing ring body is fixed in the corresponding fixing groove.

In a preferred embodiment, the annular wall is provided with a plurality of accommodating grooves at intervals, the number of the accommodating grooves is less than that of the convex arc sections, each accommodating groove is arranged between two corresponding adjacent fixing grooves, a bearing is arranged in each accommodating groove, and each bearing is in contact with the outer arc surface of the corresponding convex arc section.

In a preferred embodiment, a protruding wall extends radially outward from one end of the annular pick-up body opposite to the actuating unit for an alignment rod to be inserted axially.

In a preferred embodiment, the first arm section is pivotally connected to one end of the driving assembly, and an induction rod is disposed axially upward.

The two ends of each limiting block are respectively provided with an end face, each limiting block is provided with a top face and a bottom face which are arranged along the extending direction of the central axis, the first embedding section and the second embedding section of each limiting block are respectively a lug, the first embedding section is convexly arranged from one end face and is connected with the top face, the second embedding section is convexly arranged from the other end face and is connected with the bottom face, the first embedding section of each limiting block is used for being embedded with the second embedding section of the adjacent limiting block, and the second embedding section of each limiting block is embedded with the second embedding section of the adjacent limiting block.

In a preferred embodiment, the annular picking member has a circular opening therethrough, and the annular wall faces the opening.

In a preferred embodiment, the driving member has a braking pivot hole and two braking positioning holes, the braking pivot hole is pivoted to the driving assembly, so that the driving member can pivot around the braking pivot hole, and the two braking positioning holes are respectively fixed on the concave arc section through two screws.

In a preferred embodiment, each of the convex arc sections has a first pivot slot, each of the limiting blocks has a second pivot slot, one end of each of the pivot members is pivotally disposed in the corresponding first pivot slot, and the other end of each of the pivot members is pivotally disposed in the corresponding second pivot slot.

In a preferred embodiment, the number of convex arc segments is six.

Therefore, when the actuating unit is at the first position in the expansion state, the pivoting piece swings in a pivoting manner, so that each limit block slides towards the direction of the reverse central axis along the extending direction of the corresponding two guide rods, each limit block pushes against the heel part of each sock taking needle, and each sock taking needle moves towards the direction of the reverse central axis; when the actuating unit is at the second position, the pivoting piece swings in a pivoting way, so that each limit block slides towards the central axis along the extending direction of the corresponding two guide rods, the annular elastic piece surrounds the peripheral circle of the annular structure formed by the needle groove and abuts against the concave part of each sock taking needle, and the heel part of each sock taking needle abuts against one limit block and moves towards the central axis along with each limit block; the structure can not only lead the sock taking needles to be consistent in shape and be easier to assemble each sock taking needle in each needle groove, but also lead all the sock taking needles to be moved only by the limit blocks arranged around, thus leading the sock taking device to have the effect of easy assembly and leading the whole pick-up device to have the advantage of smaller volume due to the design of the connecting rod mechanism.

Drawings

FIG. 1 is a schematic view of a prior art apparatus for producing tubular knitted articles, such as hosiery;

FIG. 2 is a perspective view of a prior art pickup apparatus;

FIG. 3 is a cross-sectional view of a prior art pickup;

FIG. 4 is a perspective view of a preferred embodiment of the pick-up device of the present invention;

FIG. 5 is an exploded view of the preferred embodiment of the pick-up device of the present invention;

FIG. 6 is a top cross-sectional view of the preferred embodiment of the pick-up device of the present invention in a collapsed state;

FIG. 7 is a top view of the preferred embodiment of the pick-up device of the present invention in a contracted state;

FIG. 8 is an enlarged partial cross-sectional view of the preferred embodiment of the pick-up device of the present invention in a contracted state;

FIG. 9 is a top view of the preferred embodiment of the pick-up device of the present invention in an expanded state;

FIG. 10 is a cross-sectional view of the preferred embodiment of the pick-up device of the present invention looking down in the expanded state;

FIG. 11 is an enlarged, fragmentary, cross-sectional view of the preferred embodiment of the pick-up device of the present invention in an expanded state;

FIG. 12 is a top view of the preferred embodiment of the pick-up device of the present invention after the simplified assembly in the collapsed state;

FIG. 13 is a cross-sectional view taken along line 13-13 of FIG. 12;

FIG. 14 is a top view of the preferred embodiment of the pick-up device of the present invention after the simplified assembly in an expanded state;

FIG. 15 is a cross-sectional view taken along line 15-15 of FIG. 14;

FIG. 16 is a schematic view showing the displacement of the pick-up device according to the preferred embodiment of the present invention in the contracted state and the expanded state.

Fig. 17 is a perspective view of the preferred embodiment of the pick-up device of the present invention in a contracted state and an expanded state after the simplification of the components.

Reference numerals

Prior Art

Production facility 10

Circular knitting machine 11

Reed assembly 12

Pickup device 13

Annular picking member 131

Needle dial 132

Needle slot 1321

Turntable 133

Long oblique slot 1331

Center axis 134

Sock taking needle 135

Heel portion 1351

Actuating unit 136

The invention

Pickup device 100

Annular picking member 20

Opening 21

First radial length D1

Annular wall 22

Pedestal 23

Second radial length D2

Central axis 24

Accommodating groove 25

Bearing 26

Annular pick-up body 27

Fixing groove 28

Raised wall 29

Alignment rod 291

Needle dial 30

Needle dial body 31

Third diameter length D3

Needle groove 32

Movable ring 40

Concave arc segment 41

Convex arc section 42

First pivoting groove 421

Sock taking needle 50

Heel 51

Recess 52

Actuating unit 60

Drive assembly 61

Driver 62

Brake pivot hole 621

Brake positioning hole 622

First arm segment 623

Connecting segment 624

Second arm segment 625

Sensing rod 63

Annular elastic member 70

Fixing ring 80

Arc-shaped through section 81

Concave portion 811

Through hole 812

Fixing ring body 82

Fixed arm 83

Link mechanism 90

Guide bar 91

Limiting block 92

Second pivoting groove 921

First scarf joint section 922

Second scarf joint section 923

End surface 924

Top surface 925

Bottom surface 926

Pivoting member 93

First position A

Second position B

First direction O1

Second direction O2

Convergent state Q1

Expanded state Q2.

Detailed Description

Referring to fig. 4 to 11, the invention relates to a pick-up device 100 for picking up tubular knitted articles on a circular knitting machine and transferring them to another processing position, comprising an annular pick-up element 20, a needle dial 30, a movable ring 40, a fixed ring 80, a link mechanism 90, an actuating unit 60, an annular elastic element 70.

The annular picking member 20 has an annular picking body 27, the annular picking body 27 is formed with a circular opening 21 therethrough, the opening 21 has a first radial length D1, the annular picking member 20 has a ring wall 22 facing the opening 21, a pedestal 23 annularly surrounding the ring wall 22 is protruded inwardly from the bottom of the ring wall 22, the pedestal 23 surrounds the opening 21 and defines a second radial length D2, the second radial length D2 is smaller than the first radial length D1, so that the ring wall 22 and the pedestal 23 are stepped, the opening 21 has a central axis 24, and the central axes of the ring wall 22 and the pedestal 23 overlap the central axis 24.

The dial 30 has a ring-shaped dial body 31, the dial body 31 has a third radial length D3, the third radial length D3 is larger than the second radial length D2 and is smaller than or equal to the first radial length D1, so that the dial body 31 can be erected on the pedestal 23, the dial body 31 is provided with a plurality of needle grooves 32 in a surrounding manner, each needle groove 32 is annularly arranged on the inner circumference of the dial body 31, and the dial 30 is arranged on the annular picking member 20, so that each needle groove 32 can be arranged around the central axis 24 by centering on the central axis 24.

The movable ring 40 is coaxially disposed on the dial 30 and can rotate in a first direction O1 (shown in fig. 7) or a second direction O2 (shown in fig. 9) opposite to the central axis 24, the movable ring 40 has a plurality of concave arc segments 41 and a plurality of convex arc segments 42, each concave arc segment 41 and each convex arc segment 42 are disposed in a staggered manner, and each convex arc segment 42 has a first pivoting groove 421.

The fixed ring 80 is coaxially provided on the movable ring 40, and the movable ring 40 is movably located between the dial 30 and the fixed ring 80.

The link mechanism 90 is disposed between the movable ring 40 and the fixed ring 80 and is linked with the movable ring 40, the link mechanism 90 includes a plurality of limit blocks 92, a plurality of pivoting members 93 and a plurality of guide rods 91, each limit block 92 is arc-shaped, and both ends of each limit block 92 are respectively provided with a first embedding section 922 and a second embedding section 923, two adjacent limit blocks 92 are respectively embedded with each other by the respective first embedding section 922 and the second embedding section 923 in a separable manner, each limit block 92 is disposed in an inner circle range defined by an inner circle of the movable ring 40, one end of each pivoting member 93 is pivoted to the corresponding convex arc section 42 of the movable ring 40, one end of each pivoting member 93 opposite to (far away from) the convex arc section 42 is pivoted to the corresponding limit block 92, each limit block 92 is correspondingly penetrated with two guide rods 91, the number of each limit block 92 is at least equal to the number of each pivoting member 93, and the number of each guide rod 91 is at least twice the number of each limit block 92, that is, the present invention uses six limiting blocks 92 as an illustration, and each limiting block 92 is correspondingly provided with two guide rods 91, so the number of the guide rods 91 is twelve, and the number of the pivot joint member 93 is the same as that of the limiting blocks 92, but not limited thereto; one end of the two guide rods corresponding to each limiting block 92 is fixed on the fixing ring 80, the limiting blocks 92 can slide along the axial extending direction of the two guide rods 91 correspondingly arranged, each limiting block 92 is provided with a second pivoting groove 921, one end of the pivoting member 93 is pivoted in the first pivoting groove 421, and the other end of the pivoting member 93 is pivoted in the second pivoting groove 921.

In the present embodiment, the number of the limiting blocks 92 is at least three, preferably six, which are connected at equal angles, and each limiting block 92 is in an arc shape, and each limiting block 92 is disposed within an inner circle range defined by an inner circle of the movable ring 40.

In this embodiment, the number of the convex arc sections 42 is six, and the two guide rods 91 corresponding to each stopper 92 are arranged in parallel.

The sock taking needles 50 are respectively disposed in the corresponding needle grooves 32, so that the sock taking needles 50 are arranged around the central axis 24, each sock taking needle 50 has a heel portion 51 and a concave portion 52, the heel portion 51 of each sock taking needle 50 abuts against one of the stoppers 92, and the concave portion 52 is farther from the central axis 24 than the heel portion 51, in this embodiment, the concave portion 52 is located at an end of the sock taking needle 50 facing the annular wall 22.

The actuating unit 60 has a driving element 61, a driving element 62 and a sensing rod 63, the actuating unit 60 is disposed on a predetermined position of the annular picking member 20, the driving element 61 can move between a first position a (shown in fig. 7) and a second position B (shown in fig. 9), so as to drive the movable ring 40 to rotate in a first direction O1 (as shown in fig. 7) or a second direction O2 (as shown in fig. 9), the driving member 62 has a first arm section 623, a connecting section 624, and two second arm sections 625, the first arm section 623 is pivotally connected to the driving assembly 61, the first arm section 623 is pivotally connected to one end of the driving assembly 61, the sensing rod 63 is further disposed axially upward, thereby using a sensor (not shown) to sense whether the driving assembly 61 moves to the first position a or the second position B, and transmits the signal to the controller (not shown), so as to calculate and determine the actuation and actuation time of other stations; the first arm section 623 is pivoted at a predetermined position between two ends of the connecting section 624 opposite to one end of the driving assembly 61, two ends of the connecting section 624 are respectively connected with the second arm sections 625, one end of each second arm section 625 opposite to the connecting section 624 is connected with the movable ring 40, the connecting section 624 is arranged adjacent to or in contact with the outer arc surface of the corresponding convex arc section 42, and the two second arm sections 625 are respectively arranged adjacent to or in contact with two ends of the corresponding convex arc section 42; the driving member 62 further has a braking pivot hole 621 and two braking positioning holes 622, the braking pivot hole 621 penetrates through the first arm segment 623, the braking pivot hole 621 is pivoted to the driving member 61, so that the driving member 62 can pivot around the braking pivot hole 621, the two braking positioning holes 622 respectively penetrate through the two second arm segments 625, the two braking positioning holes 622 are respectively fixed on the corresponding concave arc segments 41 through two screws, and the driving member 61 is operated and linked between the first position a (shown in fig. 7) and the second position B (shown in fig. 9), so that the driving member 62 can drive the concave arc segment 41 to rotate around the central axis 24, that is, the concave arc segment 41 rotates around the central axis 24 and then rotates around the circumference of the concave arc segment 41.

The annular elastic member 70 is generally circular, is arranged around the dial 30, abuts against the concave portion 52 of each sock taking needle 50, and is elastically contracted through the annular elastic member 70, so that each sock taking needle 50 can be synchronously contracted towards the central axis 24, and each sock taking needle 50 can continuously abut against one of the limiting blocks 92; that is, the concave portion 52 formed at the tail end of each pick-up needle 50 extends from the needle groove 32 toward the dial body 31 and is exposed outside the needle groove 32, and the annular elastic member 70 is fitted around the outer circumference of the annular structure formed by each needle groove 32, is located between the dial body 31 and each needle groove 32, and abuts against the concave portion 52 of each pick-up needle 50.

Preferably, since each stopper 92 has a first engagement section 922 and a second engagement section 923, the first engagement section 922 of each stopper 92 is provided to engage with the second engagement section 923 of the adjacent stopper 92; each of the two ends of each of the limiting blocks 92 has an end surface 924, and each of the limiting blocks 92 has a top surface 925 and a bottom surface 926 arranged along the extending direction of the central axis 24, in this embodiment, each of the first engaging section 922 and the second engaging section 923 of each of the limiting blocks 92 is a protrusion, the first engaging section 922 protrudes from one of the end surfaces 924 and is connected to the top surface 925, and the second engaging section 923 protrudes from the other end surface 924 and is connected to the bottom surface 926; the first engagement section 922 of each limit block 92 is provided to engage with the second engagement section 923 of the adjacent limit block 92, and the second engagement section 923 of each limit block 92 engages with the first engagement section 922 of the adjacent limit block 92.

As described above, when the heel portion 51 of the sock taking needle 50 located in the first and

second engagement sections

922 and 923 abuts against the first and

second engagement sections

922 and 923, the heel portion 51 of the sock taking needle 50 can abut against the first and

second engagement sections

922 and 923 at the same time, so that when the end surfaces 924 of the adjacent limit blocks 92 are separated, the sock taking needle 50 can still abut against the first or

second engagement section

922 or 923, and the sock taking needle 50 located between the adjacent two limit blocks 92 is prevented from being disengaged from the abutment of the limit blocks 92, and thus each limit block 92 can abut against the heel portion 51 of all the sock taking needles 50.

In the preferred embodiment, since the present invention has the stationary ring 80 coaxially fixed to the movable ring 40 such that the linkage 90 is located between the movable ring 40 and the stationary ring 80, the stationary ring 80 has a stationary ring body 82 and a plurality of stationary arms 83, the fixing ring body 82 can be formed by combining at least three arc-shaped penetrating segments 81 (six are illustrated in the embodiment, but not limited thereto), each arc-shaped penetrating segment 81 has a concave portion 811 and two through holes 812, each concave portion 811 is formed on the lower surface of the corresponding arc-shaped penetrating segment 81 at an angular interval, the arc length of each arc-shaped penetrating segment 811 is greater than the width of each corresponding pivot member 93, so that the pivot members 93 can swing within the arc length range of the corresponding concave portion 811, the two through holes 812 radially penetrate through the corresponding arc-shaped penetrating sections 81, and the two through holes 812 are respectively located at two ends of the corresponding concave portion 811 and are spaced from the concave portion 811; when the fixing ring 80 is disposed on the movable ring 40, the recess 811 of each arc-shaped penetrating segment 81 respectively accommodates one of the pivot members 93, such that each pivot member 93 is correspondingly accommodated in one of the recess 811, and the through hole 812 of each arc-shaped penetrating segment 81 is respectively used for fixedly penetrating one of the guide rods 91, such that each guide rod 91 is respectively fixed in one of the through holes 812; each fixing arm 83 extends radially outward from the outer circumference of the fixing ring body 82, and each fixing arm 83 is disposed at an equal interval, and each fixing arm 83 is disposed corresponding to each concave arc section 43.

Preferably, the annular wall 22 of the annular picking member 20 is concavely provided with a plurality of accommodating grooves 25, each accommodating groove 25 is provided with a bearing 26, and each bearing 26 is used for abutting against the concave arc section 41, so that the concave arc section 41 can rotate smoothly.

Preferably, a plurality of fixing grooves 28 are further formed on the ring wall 22 of the ring-shaped picking member 20, and each fixing groove 28 is disposed corresponding to each fixing arm 83 of the fixing ring 80, so that one end of each fixing arm 83 far from the fixing ring body 21 is fixed in the corresponding fixing groove 28.

Preferably, the annular pick-up body 27 has, at the end opposite (remote) from the actuating unit 60, a radially external extension of a flange 29 for the axial insertion of a registration rod 291.

The above is the structural configuration and connection relationship of the present invention, and the operation of the present invention is as follows.

Referring to fig. 6, 7, 9, 10 and 17, the actuating unit 60 is actuated between a first position a (see fig. 7) and a second position B (see fig. 9) to make the link mechanism 90 of the pick-up device 100 of the present invention in a constrained state Q1 and an expanded state Q2; the pick-up device 100 of the present invention is in the contracted state Q1 during normal processing, and needs to be switched from the contracted state Q1 to the expanded state Q2 after the knitting process to form a tube-over-tube knit fabric.

Referring to fig. 6 to 8, in the knitting process, the pick-up device 100 of the present invention is initially in the closed state Q1, the actuating unit 60 is located at the first position a, after the knitting process is finished, the actuating unit 60 is actuated from the first position a to the second position B, referring to fig. 9 to 11, the driving assembly 61 drives the driving member 62, the driving member 62 is used to link the corresponding concave arc section 41 to rotate the movable ring 40 in the first direction O1, the movable ring 40 rotates to drive the pivotal swinging of the pivotal connecting members 93, the pivotal swinging of the pivotal connecting members 93 simultaneously drives the limiting blocks 92 connected thereto to displace, since each limiting block 92 is provided with one of the guide rods 91, the moving position of each limiting block 92 is limited, and the limiting blocks 92 on each guide rod 91 move toward the concave arc section 41 of the movable ring 40 along the extending direction of each guide rod 91, and each stopper 92 moves towards the corresponding concave arc 41 and simultaneously pushes against the heel 51 of each pick-up sock 50, thereby moving each pick-up sock 50 towards the movable ring 40 and bringing the linkage 90 of the pick-up device 100 of the present invention to the expanded state Q2.

When the operation procedure needs to return from the expanded state Q2 to the contracted state Q1 for the next picking operation, the actuating unit 60 can be switched from the second position B to the first position a, the driving component 61 drives the driving component 62, so that the driving component 62 drives the corresponding concave arc segment 41 to rotate the movable ring 40 in the second direction O2, the movable ring 40 rotates to drive the pivot connecting components 93 to pivot, the pivot connecting components 93 pivot and drive the limiting blocks 92 on the guide rods 91 to move towards the central axis 24, and the annular elastic component 70 tightly presses the concave portions 52 of the sock taking needles 50, so that the sock taking needles 50 move towards the central axis 24 along with the limiting blocks 92.

Preferably, when the pick-up device 100 of the present invention is switched from the retracted state Q1 to the expanded state Q2, the stoppers 92 are displaced in the direction opposite to the central axis 24 along the extending direction of the guide rods 91, so that the end surfaces 924 of the adjacent stoppers 92 are separated, the first engaging sections 922 and the second engaging sections 923 of the adjacent stoppers 92 still have an overlapping portion, and the heel 51 of the pick-up needle 50 can continuously abut against the stoppers 92 when the stoppers 92 on the guide rods 91 slide in the extending direction.

To sum up, in the expanded state Q2, the actuating unit 60 is located at the second position B, the pivot member 93 pivots, so that the limit blocks 92 on the guide rods 91 slide along the extending direction of the guide rods 91 toward the direction opposite to the central axis 24, and the limit blocks 92 push against the heels 51 of the sock taking needles 50, so that the sock taking needles 50 move away from the central axis 24; when the actuating unit 60 is located at the first position a, the pivot member 93 pivots to make the stoppers 92 on the respective guide rods 91 slide toward the central axis 24 along the extending direction of the guide rods 91, and the annular elastic member 70 surrounds the outer circumference of the annular structure formed by the needle grooves 32 and abuts against the respective recesses 52 of the respective hosiery taking needles 50, so that the heel 51 of the respective hosiery taking needles 50 abuts against one of the stoppers 92 and moves toward the central axis 24 together with the respective stoppers 92.

According to the above structure, the pick-up device 100 of the present invention not only can make the types of the stocking needles 50 consistent, but also can be made of the same mold, and can be made of the shared material, so that each stocking needle 50 can be easily assembled in each needle groove 32, and the pick-up device 100 of the present invention can also synchronously move all the stocking needles 50 only through the limiting blocks 92 formed around the connecting rod mechanism 90, so as to achieve the effects of synchronous actuation and easy assembly, and compared with the structure of the prior art, the design of the connecting rod mechanism 90 of the present invention makes the pick-up device 100 have the advantage of smaller volume as a whole.

Claims

1. A pick-up device for picking up tubular knitted articles on a circular knitting machine and transferring them to another processing position, comprising:

the movable ring is coaxially arranged on a needle disc and is driven by an actuating unit to rotate towards a first direction or a second direction relative to the central axis of the movable ring;

the fixed ring is coaxially arranged on the movable ring, and the movable ring can be movably positioned between the dial and the fixed ring; and

the connecting rod mechanism is arranged between the movable ring and the fixed ring and is linked with the movable ring, and when the actuating unit drives the movable ring to rotate towards the first direction, the connecting rod mechanism acts to be in a bundling state; when the actuating unit drives the movable ring to rotate towards the second direction, the link mechanism is actuated to be in an expanded state.

2. A pick-up device for picking up tubular knitted articles on a circular knitting machine and transferring them to another processing location according to claim 1, wherein the fixing ring has a fixing ring body and a plurality of fixing arms, each of which is arranged to extend radially outward from an outer periphery of the fixing ring body with an equidistant spacing therebetween.

3. A pick-up device for picking up tubular knitted articles on a circular knitting machine and transferring them to another processing location, as claimed in claim 1, wherein the fixed ring has a plurality of fixed arms, the mobile ring has a plurality of concave arc segments and a plurality of convex arc segments, each of the concave arc segments and each of the convex arc segments being arranged staggered with respect to each other, each of the concave arc segments being arranged in correspondence with a fixed arm, the width of the fixed arm being smaller than the arc length of the corresponding concave arc segment, each of the convex arc segments being smaller than the angular distance separating two adjacent fixed arms.

4. The pick-up device for picking up tubular knitwear on a circular knitting machine and transferring the knitwear to another processing location as claimed in claim 3, wherein the link mechanism comprises a plurality of stoppers, a plurality of pivoting members and a plurality of guide rods, each stopper is arc-shaped, and each stopper has a first engagement section and a second engagement section at both ends, the adjacent stoppers are engaged with each other with the first engagement section and the second engagement section thereof being separable, each stopper is disposed within an inner circle defined by an inner circumference of the movable ring, one end of each pivoting member is pivoted to the corresponding convex arc section of the movable ring, one end of each pivoting member opposite to the convex arc section is pivoted to the corresponding stopper, and two guide rods are penetrated through each stopper, so that the number of each stopper is at least equal to the number of each pivoting member, the number of the guide rods is at least twice of that of the limiting blocks, and one end of each guide rod corresponding to each limiting block is fixed on the fixing ring.

5. Pick-up device for picking up tubular knitted articles on circular knitting machines and transferring them to another working position according to claim 4, wherein the two guides corresponding to the respective stop blocks are parallel to each other.

6. Pick-up device for picking up tubular knitted articles on circular knitting machines and transferring them to another working position according to claim 3, wherein the actuation unit is connected to one of the convex arc segments.

7. A pick-up device for tubular knitted articles on circular knitting machines, according to claim 6, wherein the actuation unit has a drive assembly connected to one side of a catch member and a catch member connected to one of the convex arc segments on the side of the catch member remote from the drive assembly.

8. A pick-up device for picking up tubular knitted articles on a circular knitting machine and transferring them to another working position, according to claim 7, wherein the driving member has a first arm section pivoted to the driving assembly, a connecting section pivoted to a predetermined position between two ends of the connecting section opposite to one end of the driving assembly, and two second arm sections, two ends of the connecting section being respectively connected to the two second arm sections, each of the second arm sections being connected to the movable ring opposite to one end of the connecting section.

9. Pick-up device for picking up tubular knitted articles on circular knitting machines and transferring them to another working position according to claim 8, wherein the connecting section is arranged adjacent to or in contact with the outer arc of the corresponding convex arc section and the two second arm sections are arranged adjacent to or in contact with the two ends of the corresponding convex arc section respectively.

10. The pick-up device for picking up tubular knitted articles on a circular knitting machine and transferring the tubular knitted articles to another processing position as claimed in claim 4, wherein the fixing ring has a plurality of recesses formed at angular intervals on a lower surface of the fixing ring body, each of the recesses is provided corresponding to each of the pivots, and an arc length of each of the recesses is greater than a width of each of the pivots for the pivots to swing within a range of the arc length of the corresponding recess.

11. The pick-up device for picking up tubular knitted articles on a circular knitting machine and transferring the tubular knitted articles to another processing position as claimed in claim 4, wherein the dial has a dial body in a ring shape and a plurality of needle grooves each provided around an inner circumference of the dial body, each needle groove for a stocking needle to be movably inserted therein, each stocking needle having a heel portion extending upward and abutting against an outer arc face of each stopper toward one side in an axial direction of the dial body.

12. A pick-up device for picking up tubular knitted articles on a circular knitting machine and transferring them to another processing position as claimed in claim 11, wherein the rear end of each of the pick-up needles is formed with a recess extending from the needle groove in the direction of the dial body and exposed outside the needle groove, and an annular elastic member is fitted around the outer circumference of the annular structure formed by each of the needle grooves between the dial body and each of the needle grooves and abuts against the recess of each of the pick-up needles.

13. Pick-up device for picking up tubular knitted articles on circular knitting machines and transferring them to another working position according to claim 11, wherein the actuation unit is arranged at a predetermined position of an annular pick-up element on which the movable ring, the fixed ring and the dial are coaxially arranged.

14. Pick-up device for tubular knitted articles on circular knitting machines according to claim 4, wherein the actuation unit is arranged at a predetermined position of an annular pick-up element comprising an annular pick-up body and an annular wall extending upwards from the peripheral circle of the annular pick-up body, the movable ring, the fixed ring and the dial being coaxially arranged on the annular pick-up body and being located inside the annular wall.

15. A pick-up device for picking up tubular knitted articles on a circular knitting machine and transferring them to another processing position as claimed in claim 14, wherein the annular wall is provided angularly with a plurality of fixing grooves and a plurality of receiving grooves, each fixing groove being provided for each fixing arm of the fixing ring so that an end of each fixing arm remote from the fixing ring body is fixed in the corresponding fixing groove.

16. The device for picking up tubular knitted articles on a circular knitting machine and transferring the tubular knitted articles to another processing position as claimed in claim 15, wherein the circular wall is angularly provided with the respective receiving grooves at intervals, the number of the respective receiving grooves is smaller than the number of the respective convex arc sections, the respective receiving grooves are provided between the corresponding adjacent two fixing grooves except for the actuating unit, and a bearing is provided in each receiving groove, and each bearing is in contact with the outer arc surface of the corresponding convex arc section.

17. Pick-up device for tubular knitted articles on circular knitting machines, according to claim 14, wherein the annular pick-up body has, at an end opposite the actuator unit, a flange extending radially outwards for the axial insertion of an alignment rod.

18. Pick-up device for picking up tubular knitted articles on circular knitting machines according to claim 8, wherein the first arm segment is pivoted at one end with the driving assembly and is provided with an induction rod axially facing upwards.

19. A pick-up device for picking up tubular knitwear on a circular knitting machine and transferring it to another processing position as claimed in claim 4, wherein each of the stoppers has an end face at both ends thereof, and each stopper has a top face and a bottom face arranged along the extension direction of the central axis, the first engaging section and the second engaging section of each stopper are respectively a projection, the first engaging section is projected from one of the end faces and connected with the top face, the second engaging section is projected from the other end face and connected with the bottom face, the first engaging section of each stopper is provided to engage with the second engaging section of the adjacent stopper, and the second engaging section of each stopper is engaged with the second engaging section of the adjacent stopper.

20. Pick-up device for picking up tubular knitted articles on circular knitting machines and transferring them to another working position according to claim 14, wherein the annular pick-up element is pierced with an opening of circular shape and the annular wall faces this opening.

21. A pick-up device for tubular knitted articles on circular knitting machines according to claim 7, wherein the driving member has a braking pivot hole and two braking positioning holes, the braking pivot hole is pivoted to the driving assembly, so that the driving member can pivot around the braking pivot hole.

22. A pick-up device for picking up tubular knitted articles on a circular knitting machine and transferring them to another processing position as claimed in claim 4, wherein each convex arc section has a first pivoting slot, each stop block has a second pivoting slot, one end of each pivoting member is pivoted in the corresponding first pivoting slot, and the other end of each pivoting member is pivoted in the corresponding second pivoting slot.

23. Pick-up device for picking up tubular knitted articles on circular knitting machines and transferring them to another working position according to claim 3, wherein the number of convex arc segments is six.