JP2012082531A - Needle selector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a needle selector allowing required needle selection to be done in a single step.SOLUTION: A needle selection actuator 50 includes B needle selection claws 50a and H needle selection claws 50b for pressing B needle selection butts 44c and H needle selection butts 44d, respectively, each in a number corresponding to the number of the corresponding needle selection butts. The needle selection actuator 50 can individually control pressing of each of the B needle selection butts 44c and the H needle selection butts 44d with electromagnetic means. Pressing by the B needle selection claw 50a causes a selector 44 to move down in a needle groove 42c and to be set in the B-needle selection state. Pressing by the H needle selection claw 50b causes the selector 44 to move down more shallowly in the needle groove 42c than in the case of the B needle selection and to be set in the H-needle selection state. When neither the pressing by the B needle selection claw 50a nor the pressing by the H needle selection claw 50b is performed, the selector 44 does not move down in the needle groove 42c and is in the A-needle selection state. The path of an advance butt 44b can be selected from paths 44bA, 44bH and 44bB by needle selection in a single step, thereby guiding a select jack 43 to one of three positions.

Description

  The present invention relates to a needle selection device that is mounted on a carriage of a flat knitting machine together with a cam system for driving a knitting needle and that selects a knitting needle provided with a selector and a select jack by acting on the selector.

  Conventionally, in a flat knitting machine, a knitting needle is selectively selected by a cam system mounted on a carriage while repeatedly moving the carriage from one side to the other along a needle bed on which a large number of knitting needles are arranged. The knitted fabric is knitted by driving. Each knitting needle is provided with a selector in combination with a select jack. In order to act on the selector of the knitting needle so that the driving by the cam system can be switched, a needle selection device is also mounted on the carriage (see, for example, Patent Document 1).

  FIG. 5A shows an example of the cam system 2 mounted on the base plate 1 of the carriage as shown in FIG. Two sets of the cam system 2 are mounted so as to be line-symmetrical on both sides of the center line 1a of the base plate 1. On the main plate 1, a needle selection device 3 is mounted together with the cam system 2. The set of cam systems 2 includes a transfer transfer cam 11, a fixed needle raising cam 12, a movable needle raising cam 13, two stitch cams 14, a needle guide cam 15, and the like as driving cams. The needle selection device 3 includes a backward selector guide cam 16, a forward selector guide cam 17, a selector raising cam 18, a needle selection actuator 20, and the like. The cam system 2 further includes a tack presser 21, a half presser 22, and a fixed presser 23. The selector levitation cam 24 is included in the needle selection device 3.

  FIG. 5B shows an example of the knitting needle 30 to be driven and selected by the cam system 2 and the needle selection device 3 of FIG. Similar to FIG. 4 of Patent Document 1, the knitting needle 30 is shown as a side configuration in a state of being accommodated in a needle groove of a needle bed (not shown). In the needle groove, the left side of the figure is the upper side and the right side is the lower side, and the knitting needle 30 is driven to advance and retreat so as to advance toward or away from the upper mouth of the figure. The carriage ground plate 1 shown in FIG. 5A moves in the left and right directions of FIG. 5A by reciprocating the carriage while facing the upper surface of the needle bed.

  The knitting needle 30 includes a needle body 31, a needle jack 32, a select jack 33, and a selector 34 from the front to the rear. The needle jack 32 is provided with a knitting operation bat 32a and a transfer operation bat 32b. The select jack 33 is provided with a bat 33a. The selector 34 is provided with a single needle-selecting butt 34c in the middle of the forward retreating bat 34a and the rearward retreating bat 34b. However, the position of the needle selection bat 34c is one of a plurality of positions indicated by thin lines, and the positions are sequentially shifted between the knitting needles 30 in the adjacent needle grooves.

  In the cam system 2, one of the transfer transfer cam 11 and the movable needle raising cam 13 is switched so that either one protrudes from the main plate 1 and the other is submerged in the main plate 1, and the stitch forming operation and the transfer operation are performed. And are selected. The needle selection device 3 can be switched so that the butt 33a of the select jack 33 shifts to one of three positions A, H, and B while the carriage is running. A presser is not provided at the A position, a tack presser 21 and a half presser 22 are provided at the H position, and a fixed presser 23 is provided at the B position. If the three positions correspond to, for example, basic knit, tack, and miss as stitch formation operations, the operation can be switched for each knitting needle 30 and various knitted fabrics can be knitted.

  In FIG. 5A, for example, when the cam system 2 on the left side of the center line 1a moves to the right while the knitting needle 30 is driven, two selection needles 20 sandwiching the center line 1a are used. A needle is made. The selector levitation cam 24 on the right side of the center line 1a floats in the needle groove and passes the retreating portion 16a of the retraction selector guide cam 16 to the right side relative to the selector 34 that is the reference position corresponding to the B position. The needle selection actuator 20 performs the first stage needle selection action. When the needle selection claw 20a presses the needle selection butt 34c, the reference position is maintained thereafter. In the select jack 33, the butt 33a in the A and H positions is retracted to the B position by the retreating portion 15a provided on the rear side of the needle guide cam 15, and all of the select jacks 33 are in the B position after passing through the retreating portion 15a. If there is no pressure on the needle selection butt 34c by the needle selection claw 20a in the first stage of needle selection, the selector 34 advances to a position corresponding to the H position at the forward movement portion 17a of the forward movement selector guide cam 17. Then, the select jack 33 is advanced until the bat 33a is in the H position. If there is no pressure on the needle selection bat 34c by the needle selection claw 20a even in the second stage of needle selection, the advance butt 34b of the selector 34 is further advanced by the selector raising cam 18, and the butt 33a of the select jack 33 is moved to the A position. Move forward. When the needle selection bat 34c is pressed by the needle selection claw 20a in the second stage of needle selection, the forward butt 34b is not affected by the selector raising cam 18, and the butt 33a of the select jack 33 maintains the H position.

International Publication No. 2007/074944 Pamphlet

  In the configuration shown in FIG. 5 (a), two needle selection actuators 20 are arranged in parallel between the two sets of cam systems 2, and a space is also required between the needle selection actuators 20. The width will increase. One needle selection actuator 20 may be provided outside the two sets of cam systems 2. However, when the carriage moves out of the knitting needle 30 with a single needle selection actuator 20, the first stage is used as a preliminary needle selection, and after the carriage is reversed, the second stage is applied to the preliminary selected knitting needle 30. It is necessary to select this needle.

  An object of the present invention is to provide a needle selection device that enables necessary needle selection in one stage.

The present invention is mounted on a carriage that runs along the needle bed of a flat knitting machine together with a cam system for driving a knitting needle, and when the carriage runs, the rear end side of a knitting needle that is accommodated in a needle groove arranged in parallel with the needle bed By acting on the selector provided in combination with the select jack, the position of the select jack of each knitting needle is selected so as to be either the reference position or a plurality of forward positions, so that the drive operation by the cam system can be performed. In the needle selection device that can be switched every time,
In each knitting needle selector, a forward bat that receives a drive for moving from the reference position to any one of the forward positions and a number of needle selection bats equal to the number of the forward positions are respectively arranged.
Each needle selection bat is equipped with a corresponding needle selection claw, and for each knitting needle, it is possible to select whether to press the corresponding needle selection bat with any one needle selection claw or none of the needle selection bats When the needle selection butt is pressed, the depth of the selector sunk in the needle groove so that the height of the advance bat toward the carriage differs,
A forward cam that acts on the forward bat of the selector and advances the selector in a different path according to the height of the forward bat toward the carriage to switch the position of the select jack;
It is a needle selection device characterized by including.

Further, in the present invention, the carriage contacts the lower end of the selector that is sunk in the needle groove by the press in accordance with the phase in which the needle selection claw of the needle selection actuator presses the needle selection butt, The levitation cam to levitate is installed,
The floating cam has at least one intermediate depth between the depth when the selector is submerged deeply in the needle groove and the depth when the selector is not submerged, and a flat portion that contacts the lower end of the selector. Provided,
The needle selection claw that sinks the selector into the needle groove deeper than the intermediate depth with the needle selection actuator is within the range of the intermediate depth within the range where the flat portion is provided with respect to the needle selection bat. The selector is submerged in the needle groove and has a shape that performs the pressing performed to submerge the intermediate depth outside the range where the flat portion is provided.
It is characterized by that.

In the present invention, the position of the select jack is selected to be any one of the B position as the reference position, the H position as the forward position, and the A position.
The selector is sunk most deeply in the needle groove with the B-position needle selection, and the depth submerged in the needle groove with the H-position needle selection is shallower than the B-position. Ca n’t sink in the groove,
It is characterized by that.

  According to the present invention, the needle selection bat of the selector is moved forward to the carriage side by the needle selection claw of the needle selection actuator so that the select jack is one of a plurality of different advance positions and reference positions. The bat can be pressed at different heights. The advance cam moves the selector to a different position according to the height of the advance bat toward the carriage, and moves the select jack to one of multiple advance positions with one stage of needle selection using the needle selection actuator. It is possible to switch whether to make it stay in the reference position.

  Further, according to the present invention, when the needle selection claw of the selector is pressed by the needle selection claw of the needle selection actuator and the selector is submerged to an intermediate depth in the needle groove, the depth of subsidence at the flat portion provided in the floating cam is reduced. Can be limited. When the selector is submerged deeper than the intermediate depth, the pressure on the needle selection bat is outside the range where the flat part of the floating cam is provided, so the depth at which the selector is submerged is not limited to the intermediate depth. Can be submerged deeply.

  Further, according to the present invention, the needle selection to any one of the three positions of the B position, the H position, and the A position can be performed by one stage of needle selection.

FIG. 1 is a partial cam layout diagram and a right side cross-sectional view showing configurations of a needle selection device 40 and its related parts as an embodiment of the present invention. FIG. 2 is a front sectional view of a main part of the needle selection device 40 of FIG. 1 and a right side view of the selector 44. FIG. 3 is a cam layout including the needle selection device 40 shown in FIG. FIG. 4 is a partial right side cross-sectional view showing the operation of the needle selection device 40 of FIG. FIG. 5 is a cam layout diagram showing a schematic configuration of a needle selection device 3 that is conventionally mounted on a base plate 1 of a carriage together with a cam system 2, and a right side view of a knitting needle 30.

  Hereinafter, in FIG. 1 and FIG. 2, the configuration of the needle selection device 40 as one embodiment of the present invention and the related portions will be described. In FIG. 3, the cam arrangement including the needle selection device 40 shown in FIG. 1 will be described. In FIG. 4, the operation of the needle selection device 40 of FIG. 1 will be described. In the description of each of these drawings, the same reference numerals are given to the portions corresponding to the portions described previously, including FIG. In addition, portions that are not described in the drawings to be described may be referred to with reference numerals described above.

  FIG. 1A shows a configuration of a main part of the needle selection device 40, and FIG. 1B shows a configuration related to a knitting needle selected by the needle selection device 40. The needle selection device 40 is mounted on a base plate 41 of a carriage (not shown). The needle selection device 40 is arranged on the surface of the base plate 41 facing the needle bed 42 so as to be line symmetric with respect to the center line 41a. In the needle bed 42, a needle plate 42b is erected at a predetermined interval from the substrate 42a, and a needle groove 42c is formed between the needle plates 42b. Basically, a knitting needle similar to the knitting needle 30 shown in FIG. 5B is accommodated in the needle groove 42c. However, FIG. 1B shows only the select jack 43 and the selector 44 at the rear of the knitting needle. The front part of the knitting needle is equivalent to the needle body 31 and the needle jack 32 of the knitting needle 30. The selector 44 is provided with a B needle selecting butt 44c and an H needle selecting butt 44d between the front backward butt 44a and the rearward forward butt 44b. The B needle selection bat 44c and the H needle selection bat 44d are provided at any one of the positions shown at a distance from each other.

  The needle selection actuator 50 includes a corresponding number of B needle selection claws 50a and H needle selection claws 50b for pressing the B needle selection butt 44c and the H needle selection butt 44d, respectively. Each B needle selection claw 50a and H needle selection claw 50b can be individually controlled by electromagnetically pressing the B needle selection butt 44c and the H needle selection butt 44d, respectively.

  As shown in FIG. 1B, when the selector 44 is retracted to the reference position corresponding to the B position, the rear portion including the forward butt 44b and the like is lifted and lowered in the needle groove 42c with the front wire 45 as a fulcrum. Oscillating displacement is possible. When the B needle selection claw 50a presses the B needle selection butt 44c, the selector 44 is oscillated and displaced so as to sink most deeply into the needle groove 42c, and a B needle selection state is obtained. When the H needle claw 50b presses the H needle butt 44d, the selector 44 enters the H needle selection state that sinks shallower than the B needle in the needle groove 42c. If the B needle selection claw 50a and the H needle selection claw 50b are not pressed against the B needle selection butt 44c and the H needle selection butt 44d, the selector 44 does not sink into the needle groove 42c, and the state of the A needle selection It becomes. Since the needle selection actuator 50 has the B needle selection claw 50a that sinks the selector 44 deeply in the needle groove 42c on the fulcrum side, the height of the forward butt 44b can be greatly changed.

  The selector 44 is set so that the sliding resistance with respect to the needle groove 42c is relatively large so as to maintain the swing displacement and advance / retreat state. The selector may be arranged with respect to the plurality of needle selection bats, with the swing fulcrum at the rear and the forward cam that changes in height protruding toward the carriage at the front. The arrangement of the needle selection actuator and the advance selector guide cam may be made to correspond to the needle selection bat and the advance bat.

  The needle selection device 40 is the needle selection shown in FIG. 5 in that the position of the butt 43a of the select jack 43 is switched to one of the A position, H position, and B position by A needle selection, H needle selection, or B needle selection. This is the same as the device 3. However, the needle selection device 40 can switch between three positions by only one stage of needle selection by the needle selection actuator 50. A top portion 54a of a selector levitation cam 54, which is a levitation cam, is provided in the phase near the center line 41a of the needle selection device 40. In this phase, the B needle selection claw 50a and the H needle selection claw 50b press the B needle selection butt 44c and the H needle selection butt 44d, respectively. The selector levitation cam 54 is held by the holder 41b at a position where it advances from the rear end side of the needle groove 42c to the inside, pushes up the rear end of the lower end of the selector 44 from below the needle groove 42c, and moves the selector 44 into the needle groove 42c. To surface.

  For example, in the case of going left, the butt 43a of the select jack 43 is all in the B position after passing through the backward portion 55a on the rear side of the needle guide cam 55 in the vicinity of the center line 41a, and the backward portion 56a of the selector guide cam 56 for backward movement. , The retracting butt 44a of the selector 44 is retracted to a position corresponding to the B position.

  As shown in FIGS. 2 (a) and 2 (b), the selector floating cam 54 has a flat portion 54b on both sides of the top portion 54a at a height contacting the lower end of the selector 44 in the H needle selection state. Is provided. As shown in FIG. 2B, when the H needle butt 44d is pressed by the H needle nail 50b, the depth at which the selector 44 sinks is limited by the flat portion 54b. As shown in FIG. 2 (a), the B needle nail 50a has a shape such that the portion where the height 50aL is higher than the height 50bL of the H needle nail 50b is outside the range of the flat portion 54b. In this shape, the B needle nail 50a sinks the selector 44 to the intermediate depth of the H needle selection within the range of the flat portion 54b, and sinks to the maximum depth of the B needle selection outside the range of the flat portion 54b.

  As shown in FIG. 1A, a selector selector cam 57 for advancing as a cam for advancing the selector 44 is provided behind the needle selection actuator 50 to act on the advancing butt 44 b of the selector 44. ing. The forward selector guide cam 57 is provided with an A cam surface 57a and an H cam surface 57b in order to reflect a needle selection result by the B needle selection claw 50a or the H needle selection claw 50b of the needle selection actuator 50. Yes. An intermediate height surface 57c is provided between the A cam surface 57a and the H cam surface 57b. The cam surface 57a for A is formed on the side surface from the surface of the main plate 41 to the intermediate height surface 57c. The H cam surface 57 b is formed on a stepped surface between the intermediate height surface 57 c and the surface of the forward selector guide cam 57. In the forward selector guide cam 57, an inclined surface 57d whose height decreases to the surface of the base plate 41 following the region where the A cam surface 57a, the H cam surface 57b, and the intermediate height surface 57c are formed. Is provided.

  In the selector 44 that is in the A needle selection state by the needle selection actuator 50, the forward butt 44b protrudes highly toward the carriage side, so that it contacts the A cam surface 57a and advances along the locus 44bA. As a result, the retreating bat 44a advances along the locus 44aA, advances the bat 43a of the select jack 43 along the locus 43aA, and moves to the A position.

  The selector 44 that is in the H needle selection state by the needle selection actuator 50 sinks to a middle depth in the needle groove 42c. Since the advance butt 44b protrudes to the intermediate height toward the carriage side, it abuts on the H cam surface 57b and advances along the locus 44bH. As a result, the retreat bat 44a advances along the locus 44aH, advances the bat 43a of the select jack 43 along the locus 43aH, and moves to the H position.

  The selector 44 in the B needle selection state by the needle selection actuator 50 sinks deeper than the intermediate depth in the needle groove 42c. The forward butt 44b does not reach the height at which it abuts against the H cam surface 57b, and passes along the locus 44bB without being affected by the H cam surface 57b. As a result, the selector 44 and the select jack 43 are moved to the tracks 44bB, 44aB, and 43aB that maintain the retracted positions at the retracted portion 56a of the selector guide cam 56 for retracting and the retracted portion 55a on the rear side of the needle guide cam 55, respectively. Along the way, the bat 43a remains in the B position. In the selector 44 that is relatively approached from the inclined surface 57d side of the forward selector guide cam 57, the forward butt 43b can reach the vicinity of the center line 41a through the inclined surface 57d. In the cam arrangement of FIG. 5, the selector raising cam 18 provided for each needle selection actuator 20 needs to be able to appear and retract in order to make the leading side sunk according to the traveling direction of the carriage. However, the forward selector guide cam 57 does not need to appear and disappear.

  FIG. 2C and FIG. 2D show the difference in position between the B needle selection butt 44 c and the H needle selection butt 44 d for the two types of selectors 44. In the case of a fine gauge with a narrow pitch of knitting needles, the number of selectors 44 is increased, and the B needle selection pawls 50a and H are selected together with the B needle selection butt 44c and the H needle selection bat 44d according to the number of types. The number of needle claws 50b may be increased.

  The advance butt 44b of the selector 44 is provided on the rear end side of the selector 44, and the plurality of B needle selection bats 44c and the H needle selection butt 44d are arranged in front of the advance butt 44b. As shown in FIG. 1B, the wire 45 serving as the swing fulcrum is in front of the B needle selection butt 44c. If the height of the H needle butt 44d far from the swing fulcrum is made higher than the height of the back of the B needle butt 44c, the selector 44 will sink into the needle groove 42c by the B needle selection and the B needle selection The height of the butt 44c and the H needle bat 44d can be made equal.

  FIG. 3 shows a cam arrangement including the needle selection device 40 shown in FIG. The base plate 41 is provided with cam systems 72 on both sides of the center line 41a. The needle selection device 40 has a symmetrical configuration with respect to the center line 41a. In the needle selection devices 60, 70 provided on the left and right sides of the base plate 41, the backward selector guide cams 66, 76 and the forward selector guide cams 67, 77 are half of the backward selector guide cam 56 and the forward selector guide cam 57. Equivalent cams are provided. That is, the right half of the needle selection device 40 is equivalent to the left needle selection device 60, and the left half of the needle selection device 40 is equivalent to the right needle selection device 70, allowing needle selection to three positions, respectively. It is. Since the needle selection to the three positions by the needle selection device 40 is possible in one stage, the interval of the cam system 72 can be narrowed, and the carriage can be made compact. In the needle selection devices 60 and 70 on the leading side according to the traveling direction of the carriage, needle selection to three positions is possible in one step, so that preliminary needle selection when the carriage is removed becomes unnecessary.

  FIG. 4 shows the operation of the needle selection device 40 of FIG. FIG. 4A shows a state immediately before needle selection. The rear end of the selector 44 is pushed up by the top 54 a of the selector floating cam 54. FIGS. 4B, 4C, and 4D show states of A needle selection, H needle selection, and B needle selection, respectively. In the A needle selection and the H needle selection, the advance butt 44b of the selector 44 is advanced by the A cam surface 57a and the H cam surface 57b of the advance selector guide cam 57, respectively. In the B needle selection, the forward selector guide cam 57 does not advance the forward butt 44b of the selector 44.

  In the needle selection devices 40, 60, and 70, the selector 44 has two types of needle selection bats and selections in order to switch the select jack 43 between the two types of forward positions of the A position and the H position and the reference position of the B position. The needle actuator 50 is provided with two types of needle selection pawls, and the forward selector guide cams 57, 67, 77 are provided with two types of cam surfaces. If the number of needle selection bats provided in the selector 44 is increased and the number of needle selection claws of the needle selection actuator and the type of cam surface of the forward selector guide cam are increased accordingly, three or more advance positions can be switched. Is also possible. Although there are two or more intermediate depths at which the selector 44 is submerged in the needle groove 42c, only one flat portion 54b provided on the selector floating cam 54 may be provided corresponding to any intermediate depth. Good. A plurality of flat portions can also be provided. The portion where the needle selection bat is sunk deeper than the flat portion with the needle selection claw may be outside the range where the flat portion is provided.

40, 60, 70 Needle selection device 42 Needle bed 42c Needle groove 43 Select jack 43a Butt 44 Selector 44a Retraction butt 44b Advance butt 44c B Needle butt 44d H Needle selection bat 50 Needle selection actuator 50a B needle selection claw 50b H needle selection Claw 54 Selector levitation cam
54b Flat portion 57 Advance selector guide cam 57a A cam surface 57b H cam surface 57c Intermediate height surface 72 Cam system

Claims (3)

A knitting needle driving cam system is mounted on a carriage that runs along the needle bed of the flat knitting machine, and a select jack is provided at the rear end side of the knitting needle that is accommodated in a needle groove arranged in parallel with the needle bed when the carriage is running. Acting on the selector provided in combination, the drive operation by the cam system can be switched for each knitting needle by selecting the position of the select jack of each knitting needle to be either the reference position or multiple advance positions In a needle selection device,
In each knitting needle selector, a forward bat that receives a drive for moving from the reference position to any one of the forward positions and a number of needle selection bats equal to the number of the forward positions are respectively arranged.
Each needle selection bat is equipped with a corresponding needle selection claw, and for each knitting needle, it is possible to select whether to press the corresponding needle selection bat with any one needle selection claw or none of the needle selection bats When the needle selection butt is pressed, the depth of the selector sunk in the needle groove so that the height of the advance bat toward the carriage differs,
A forward cam that acts on the forward bat of the selector and advances the selector in a different path according to the height of the forward bat toward the carriage to switch the position of the select jack;
A needle selection device comprising: In accordance with the phase in which the needle selection claw of the needle selection actuator presses the needle selection butt, the carriage comes into contact with the lower end of the selector that is submerged in the needle groove by the press, and the floating cam that floats the selector Is installed,
The floating cam has at least one intermediate depth between the depth when the selector is submerged deeply in the needle groove and the depth when the selector is not submerged, and a flat portion that contacts the lower end of the selector. Provided,
The needle selection claw that sinks the selector into the needle groove deeper than the intermediate depth with the needle selection actuator is within the range of the intermediate depth within the range where the flat portion is provided with respect to the needle selection bat. The selector is submerged in the needle groove and has a shape that performs the pressing performed to submerge the intermediate depth outside the range where the flat portion is provided.
The needle selection device according to claim 1. The position of the select jack is selected to be any one of the B position as the reference position, the H position as the forward position, and the A position,
The selector is sunk most deeply in the needle groove with the B-position needle selection, and the depth submerged in the needle groove with the H-position needle selection is shallower than the B-position. Ca n’t sink in the groove,
The needle selection device according to claim 1 or 2, characterized in that.

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