flat knitting machine

Abstract

Provided is a flat knitting machine capable of suppressing a situation in which a yarn supply port departs from a region in which the yarn supply port can supply yarn to a position at which a stitch is formed on a needle bed side, along with up-and-down movement of the yarn supply port. A flat knitting machine includes a needle bed, a shuttle lever erected above the needle bed, a yarn guide having a yarn supply port for supplying knitting yarn to a needle, and a long hole and a screw for adjusting the height of the yarn supply port at the time of yarn supply, wherein the yarn guide includes a yarn guide bar having the yarn supply port, an upward force application portion guide slot that guides the yarn guide bar in a guide direction that is inclined with respect to a vertical direction, and a yarn supply port side guide portion and a yarn guide base portion side guide portion that change the direction of movement of the yarn supply port to a direction that is more vertical than the guide direction, at least within a range of the height of the yarn supply port in which the yarn supply port can supply yarn to the position at which the stitch is formed.

Description

Technical Field

[0001] The present invention relates to the technology of a flat knitting machine equipped with a yarn guide. Background Art

[0002] Conventionally, the technology of a flat knitting machine equipped with a yarn guide has been well-known. For example, the technology described in Patent Document 1.

[0003] In Patent Document 1, a flat knitting machine having a yarn guide is described. The yarn guide has a yarn guide rod that can move up and down and a yarn guide rod guide that guides the movement of the yarn guide rod. A yarn supply port for supplying yarn to the knitting needles is provided at the lower end of the yarn guide rod. The yarn guide rod descends during yarn supply and ascends during standby so that the yarn supply part retreats from the tooth opening. The yarn guide rod has a rod part provided with a yarn supply port at the lower end and an upward biasing part provided above the rod part. The rod part and the upward biasing part are joined by inserting a screw through a long hole provided in the rod part.

[0004] According to such a structure, by changing the fixing position of the screw in the long hole, it is possible to adjust the height of the yarn supply port during yarn supply in accordance with the knitting conditions. Specifically, for example, in the case of knitting (floating jacquard) in which the intervals of floats are continuous, the yarn supply port is sometimes lowered.

[0005]

Prior Art Documents

[0006]

Patent Documents

[0007]

Patent Document 1

[0008]

Problems to be Solved by the Invention

[0009] Here, in the technology described in Patent Document 1, as the yarn supply port moves up and down, the position of the yarn supply port moves toward the front needle bed side or the rear needle bed side, and there is a concern that the yarn supply port may move out of the area where it can supply yarn to the yarn hooking position on the tooth opening side.

[0010] The present invention has been made in view of the above situation, and the problem to be solved is to provide a flat knitting machine that can suppress the situation where the yarn supply port moves out of the area where it can supply yarn to the yarn hooking position on the tooth opening side as the yarn supply port moves up and down.

[0011]

Means for Solving the Problems

[0012] The problems to be solved by the present invention are as described above. The means for solving the problems will be described below.

[0013] That is, the flat knitting machine of the present invention includes: at least two needle beds, facing each other across the toothed opening, with knitting needles arranged side by side in the longitudinal direction; a shuttle rod, mounted above the needle beds; a yarn guide base, movably disposed along the shuttle rod on a portion of the path for supplying knitting yarn to the knitting needles; a yarn guide having a yarn inlet for supplying knitting yarn to the knitting needles and the yarn guide base; and a yarn inlet height adjustment unit for adjusting the height of the yarn inlet during yarn feeding, wherein the yarn guide includes: a yarn guide rod having the yarn inlet; and a changeover mechanism. The unit changes the moving direction of the yarn feeder; the yarn guide rod guide is supported at the base of the yarn guide and supports the changing unit; and the guiding unit guides the yarn guide rod in a guiding direction that is inclined relative to the vertical direction. The changing unit is disposed on the yarn guide rod and the yarn guide rod guide, and at least within the height range of the yarn feeder that can feed yarn to the hooked position, changes the moving direction of the yarn feeder to a direction that is more vertical than the guiding direction according to the change in the height of the yarn feeder.

[0014] With this configuration, as the yarn feeder moves up and down, it moves vertically relative to the guiding direction caused by the guiding unit, thus preventing the yarn feeder from leaving the area where it can feed yarn to the hook position located on the toothed side.

[0015] Additionally, the yarn guide rod includes a yarn feeding portion with the yarn feeding opening, and the conversion unit includes: a yarn feeding opening-side guide receiving portion, which is disposed on the yarn feeding opening side of either the yarn feeding portion or the yarn guide rod guide; a yarn guide base-side guide receiving portion, which is disposed on the yarn guide base side of either the yarn feeding portion or the yarn guide rod guide; a yarn feeding opening-side guide portion, which is disposed on the yarn feeding opening side of the other of the yarn feeding portion or the yarn guide rod guide, and guides the yarn feeding opening-side guide receiving portion along a trajectory parallel to the guiding direction; and a yarn guide base-side guide portion, which is disposed on the yarn guide base side of the other of the yarn feeding portion or the yarn guide rod guide, and guides the yarn guide base-side guide receiving portion along the upper end of the yarn feeding portion in a direction inclined in the front-rear direction away from the tooth opening compared to the guiding direction.

[0016] This configuration can suppress the increase in the thickness direction of the yarn guide near the densely packed teeth of multiple yarn guides, thus achieving space saving.

[0017] Alternatively, the yarn guide rod may include: a rod portion, which is guided in the guiding direction by the guiding unit and driven to move up and down by a vertical moving drive mechanism; and a yarn feeding portion, which is connected to the rod portion and is provided with the yarn feeding port.

[0018] This configuration allows the yarn feeding section of the standby yarn guide to retract relative to the toothed opening, thereby mitigating the collision between the yarn feeding section of the moving yarn guide and the yarn feeding section of the standby yarn guide.

[0019] Alternatively, the yarn feeding part and the rod part can be formed independently, and the yarn feeding port can be connected to the rod part in a direction that is different from the guiding direction of the yarn guide rod and changes position back and forth relative to the rod part.

[0020] With this configuration, the load applied to the yarn guide bar can be reduced when the yarn feeding section moves relative to the bar.

[0021] Alternatively, the yarn guide rod may have a connecting part disposed between the rod portion and the yarn feeding portion, connecting the rod portion and the yarn feeding portion. The connecting part is fixed to the rod portion at a position lower than the shuttle rod, so that its vertical position relative to the rod portion can be adjusted by the yarn feeding opening height adjustment unit.

[0022] With this configuration, the height of the connecting part relative to the rod can be adjusted without avoiding the shuttle, thus making it easy to adjust the height of the yarn feed opening during yarn feeding.

[0023] Alternatively, the guiding unit may be disposed at the base of the yarn guide, and the shuttle may be arranged radially relative to the center of the front and rear needle beds in a side view.

[0024] This configuration allows for a radial arrangement of the shuttle that reduces the width in the front-to-back direction compared to a horizontally arranged shuttle.

[0025] [Invention Effects]

[0026] As an effect of the present invention, the following effect can be achieved: it can suppress the situation where the yarn feeder moves away from the area where it can feed yarn to the hook position located on the toothed side as the yarn feeder moves up and down. Attached Figure Description

[0027] Figure 1 This is a side view of the flat knitting machine according to the first embodiment of the present invention.

[0028] Figure 2 It refers to the shuttle and yarn guide. Figure 1 A-direction view.

[0029] Figure 3 This is a side view of the yarn guide.

[0030] Figure 4 In the diagram, (a) is a front view of the yarn section, and (b) is a side view of the yarn section.

[0031] Figure 5 yes Figure 2 CC section view.

[0032] Figure 6 This is an enlarged side sectional view of the yarn guide after the yarn feeder has risen.

[0033] Figure 7 This is an enlarged side sectional view showing the yarn guide of the flat knitting machine according to the second embodiment of the present invention.

[0034] Figure 8 This is an enlarged side sectional view of the yarn guide after the yarn feeder in the second embodiment has been raised.

[0035] Figure 9 This is an enlarged side sectional view showing the yarn guide of the flat knitting machine according to the third embodiment of the present invention.

[0036] Figure 10 This is an enlarged side sectional view of the yarn guide after the yarn feeder in the third embodiment has been raised.

[0037] [Explanation of Labels in the Attached Image]

[0038] 1. Yarn guide

[0039] 10. Yarn guide base

[0040] 20 yarn guide rods

[0041] 22. Bar section

[0042] 23. To the yarn department

[0043] 23a Yarn feeder

[0044] 23b Yarn feeder side guide bearing part

[0045] 23c yarn guide base side guide bearing part

[0046] 24 Connecting parts

[0047] 24a Long hole for adjusting the yarn feed position

[0048] 30 Yarn guide rod guide component

[0049] 31. Yarn feeder side guide

[0050] 32, 33 Yarn guide base side guide section

[0051] 34. Guide hole

[0052] 40 screws

[0053] 100 flat knitting machines

[0054] 110 needle bed

[0055] 111 Knitting needles

[0056] 130 shuttle bar Detailed Implementation

[0057] The directions indicated by arrows U, D, F, B, L, and R in the diagram will be defined as up, down, forward, backward, left, and right, respectively.

[0058] like Figure 1 and Figure 2 As shown, the flat knitting machine 100 of the first embodiment of the present invention mainly includes a needle bed 110, a triangular seat slide 120, a shuttle 130, and a vertical movement drive mechanism 140.

[0059] The needle beds 110 are arranged in a front-to-back configuration with the toothed edges S separated by a tooth. The front and back needle beds 110 are configured in an inverted V-shape in side view, tilted upwards toward the front-to-back center side (the side facing each other). On each needle bed 110, a plurality of knitting needles 111 are arranged along the length (left-right direction) of the needle bed 110.

[0060] The cam carriages 120 are arranged in a pair, facing each other from above and front and rear to face the needle beds 110. The cam carriages 120 are connected by a bridge 120a arranged to span multiple shuttles 130. The cam carriages 120 are capable of reciprocating along the length of the needle bed 110 via a servo motor (not shown). The cam carriages 120 are equipped with a needle selection mechanism (not shown) and a cam mechanism (not shown) for selectively actuating the needles 111 of the needle bed 110.

[0061] A plurality of shuttles 130 are mounted above the needle bed 110 and arranged to extend along the length of the needle bed 110. In a side view, the shuttles 130 are arranged radially relative to the center of the front and rear needle beds 110. Here, "the center of the front and rear needle beds 110" refers to the yarn feeding position in the side view. A yarn guide 1 for feeding the knitting yarn is supported in a manner movable along the shuttle 130, in a portion of the path that supplies the knitting yarn to the knitting needles 111. The knitting yarn from the yarn bobbin (not shown) is fed to the yarn guide 1 via a suitable yarn feeding path.

[0062] The up-and-down movement drive mechanism 140 has a cam plate 141 disposed above the yarn guide 1 and capable of pressing down the yarn guide rod 20 of the yarn guide 1. By actuating the cam plate 141, the yarn guide rod 20 can be lowered. The up-and-down movement drive mechanism 140 has a spring 142 inserted into the lifting force application part 21 (described later) and applying upward force to the yarn guide rod 20, thereby enabling the yarn guide rod 20 to rise.

[0063] Next, use Figures 2 to 6 The structure of yarn guide 1 will be explained. Additionally, Figure 2 , Figure 3 , Figure 5 and Figure 6 This refers to the last yarn guide 1 among multiple yarn guides 1.

[0064] The yarn guide 1 includes a traveling roller 1a, thereby enabling it to travel along the length of the shuttle 130. A belt is fixed to the yarn guide 1, and the belt is driven by an electric motor, thereby enabling the yarn guide 1 to travel. In addition, the yarn guide 1 can also travel in conjunction with the cam carriage 120.

[0065] The yarn guide 1 includes a yarn guide base 10, a yarn guide rod 20, and a yarn guide rod guide 30.

[0066] Figure 2 and Figure 3 The yarn guide base 10 shown supports the yarn guide rod 20 and the yarn guide rod guide member 30, which will be described later. The yarn guide base 10 is located on the upper part of the yarn guide 1. Figure 2 As shown, a rising force-applying portion guide groove 11, which is an example of the guiding unit of the present invention, is formed in the base 10 of the yarn guide. The rising force-applying portion guide groove 11 is formed to extend in the vertical direction from the left and right center of the base 10 of the yarn guide, and is configured to guide the rising force-applying portion 21 of the yarn guide rod 20 described later.

[0067] The yarn guide rod 20 moves up and down to avoid collisions with the yarn feeder 23a used to supply knitting yarn to the knitting needles 111. The yarn guide rod 20 is supported by the yarn guide base 10 and is arranged radially relative to the center of the front and rear needle beds 110 in a side view. The yarn guide rod 20 includes a lifting force application part 21, a rod part 22, a yarn feed part 23, and a connecting plate 24.

[0068] Figure 2 and Figure 3 The upward force-applying part 21 shown is provided on the upper part of the yarn guide rod 20, and is inserted into the spring 142 of the up-and-down movement drive mechanism 140. The upward force-applying part 21 is forceped upward by the spring 142, and the downward pressure part 21a provided on the upper part of the upward force-applying part 21 is configured to be pressed downward by the cam plate 141 of the up-and-down movement drive mechanism 140. The upward force-applying part 21 is formed to extend along the extending direction of the upward force-applying part guide groove 11, is guided by the upward force-applying part guide groove 11, and is driven to move up and down by the up-and-down movement drive mechanism 140.

[0069] Figure 2 and Figure 3The rod portion 22 shown is located below the lifting force-applying portion 21 and is formed to extend in a straight line along the extending direction of the lifting force-applying portion 21. The rod portion 22 is connected to the lifting force-applying portion 21 and is driven to move up and down together with the lifting force-applying portion 21 by the up-and-down movement drive mechanism 140. A protrusion 22a protruding rearward is provided at the lower part of the rod portion 22.

[0070] The yarn feeding section 23 is positioned below the rod section 22, and a yarn feeding port 23a is provided at its lower end. However, the position of the yarn feeding port 23a is not limited to the lower end of the yarn feeding section 23. The yarn feeding section 23 is formed separately from the rod section 22 and is connected to the rod section 22 via a connecting plate 24 (described later). The yarn feeding section 23 is connected to the rod section 22 via the connecting plate 24, thereby allowing it to move relative to the rod section 22. When the yarn feeding section 23 moves relative to the rod section 22, the yarn feeding port 23a moves in a direction different from the guiding direction of the yarn guide rod 20 by the upward force application guide groove 11 when moving up and down via the up-and-down movement drive mechanism 140, and its position changes back and forth relative to the rod section 22. The yarn feeding section 23 includes a yarn feeding port-side guide receiving section 23b and a yarn guide base-side guide receiving section 23c.

[0071] Figure 2 , Figure 4 and Figure 5 The yarn feeder side guide receiving portion 23b shown is guided by the yarn feeder side guide groove 31a, which will be described later. The yarn feeder side guide receiving portion 23b is formed to protrude laterally at the midpoint of the upper and lower part of the yarn feeder portion 23, which is above the yarn feeder 23a. In order to enable the yarn feeder portion 23 to move in a direction different from the guiding direction of the lifting force application part guide groove 11 to the rod portion 22, the yarn feeder side guide receiving portion 23b is formed in the side view as a rectangle or rhombus shape with two diagonally opposite corners chamfered. Alternatively, the yarn feeder side guide receiving portion 23b may also be formed as a circle or ellipse in the side view.

[0072] Figure 2 , Figure 4 and Figure 5 The yarn guide base-side guide receiving portion 23c shown is guided by the yarn guide base-side guide groove 32a, described later. The yarn guide base-side guide receiving portion 23c is formed to protrude laterally from the upper end of the yarn feeding portion 23, which is located above the yarn feeder side-side guide receiving portion 23b. In the side view, the yarn guide base-side guide receiving portion 23c is formed as a rectangle or rhombus shape with two diagonally opposite corners chamfered. Alternatively, the yarn guide base-side guide receiving portion 23c may also be formed as a circle or ellipse in side view.

[0073] A connecting plate 24 is disposed between the rod 22 and the yarn feeding part 23, connecting the rod 22 and the yarn feeding part 23. The connecting plate 24 has an elongated hole 24a for adjusting the position of the yarn feeding opening and a lower end connecting part 24b.

[0074] Figure 2 The elongated hole 24a for adjusting the yarn feed position shown is an example of the yarn feed height adjustment unit of the present invention. It is formed such that it passes through the connecting plate 24 in the thickness direction and extends in the length direction of the connecting plate 24. The elongated hole 24a for adjusting the yarn feed position is formed in the upper part of the connecting plate 24. The protrusion 22a of the rod 22 is inserted through the elongated hole 24a from the front. By inserting the protrusion 22a through the elongated hole 24a for adjusting the yarn feed position, the left and right position of the connecting plate 24 relative to the rod 22 is restricted. A screw 40 is inserted through the elongated hole 24a from the rear, below the shuttle 130, and the screw 40 is threaded into an internal threaded hole (not shown) formed in the lower part of the rod 22. In this way, the connecting plate 24 is fixed to the rod 22 in the upper part of the connecting plate 24.

[0075] Figure 2 The lower end connecting portion 24b shown is formed at the lower end of the connecting plate 24, and engages with the engagement hole 23d formed in the yarn feeding portion 23 (see reference). Figure 4 ) Engage. In this way, the lower part of the connecting plate 24 is connected to the yarn feeding part 23 in a direction that can change position forward and backward.

[0076] A yarn guide 30 is disposed in front of the yarn guide 20 to guide the yarn guide 20. The upper end of the yarn guide 30 is supported on the yarn guide base 10. The yarn guide 30 includes a yarn feeder side guide 31 and a yarn guide base side guide 32.

[0077] The yarn feeder side guide portion 31 and the yarn feeder side guide receiving portion 23b are examples of the conversion unit of the present invention. The yarn feeder side guide portion 31 is provided at both the left and right ends of the lower end of the yarn guide rod guide member 30. The yarn feeder side guide portion 31 is formed to extend parallel to the trajectory of the forward and backward movement of the rod portion 22. Figure 5 As shown, a yarn feeder side guide groove 31a is formed in the yarn feeder side guide portion 31. The yarn feeder side guide groove 31a is formed by recessing into the left and right outer sides of the yarn feeder rod guide member 30, and is formed by opening at the upper and lower ends of the yarn feeder side guide portion 31. A yarn feeder side guide receiving portion 23b is accommodated in the yarn feeder side guide portion 31.

[0078] The yarn guide base-side guide portion 32 and the yarn guide base-side guide receiving portion 23c are examples of the conversion unit of the present invention. The yarn guide base-side guide portion 32 is formed at a position above the yarn feeder side guide portion 31.

[0079] The guide portion 32 at the base of the yarn guide is formed to extend in a direction different from the trajectory of the forward and backward movement of the lever portion 22 based on the up-and-down movement drive mechanism 140. More specifically, as... Figure 3 , Figure 5 and Figure 6 As shown, the base-side guide portion 32 of the yarn guide is formed to extend in a direction that is more horizontal than the guiding direction of the rod portion 22 by the guide groove 11 of the rising force application portion.

[0080] like Figure 5 and Figure 6 As shown, a guide groove 32a is formed on the base side guide portion 32 of the yarn guide. The guide groove 32a is formed such that the lower end of the guide portion 32 is open and extends parallel to the extending direction of the guide portion 32. A guide receiving portion 23c is housed in the guide groove 32a. Thus, the guide receiving portion 23c is guided by the guide portion 32 in a direction that is inclined away from the tooth S in the front-rear direction, relative to the length direction of the rod portion 22, when the height of the yarn feed opening 23a is increased.

[0081] In the yarn guide 1 configured in this way, the yarn feeding part 23 is guided by the yarn feeding port side guide part 31 and the yarn guide base side guide part 32 of the yarn guide rod guide 30, thereby connecting to the rod 22 in a direction that is different from the guiding direction of the rising force application part guide groove 11 on the rod 22 and changes position relative to the rod 22.

[0082] More specifically, at least within the yarn feeding range, the yarn feeder guide 31 and the yarn guide base guide 32, based on changes in the height of the yarn feeder 23a caused by changes in the fixing position of the screw 40 in the length direction of the elongated hole 24a used for adjusting the yarn feeder position of the up-and-down movement drive mechanism 140, change the direction of movement of the yarn feeder 23a to a direction that is more vertical than the direction of guidance of the lifting force application guide groove 11 to the rod 22. Here, "yarn feeding range" refers to the range of height of the yarn feeder 23a that can feed yarn to the position where the yarn is hooked.

[0083] The following uses Figure 1 as well as Figure 2 The method of forward and backward movement of the yarn guide rod 20 relative to the toothed opening S will be explained. When the yarn guide 1 feeds yarn, the pressing part 21a located on the upper part of the lifting force application part 21 is pressed downward by the cam plate 141. The lifting force application part 21 is guided by the lifting force application part guide groove 11 and descends against the force of the spring 142. The rod part 22 descends along with the lifting force application part 21, and the yarn feed opening 23a of the yarn feed part 23 enters the toothed opening S. By allowing the yarn feed opening 23a to enter the toothed opening S, the knitting yarn can be supplied to the knitting needle 111.

[0084] On the other hand, when the yarn guide 1 is in standby mode, the pressure of the cam plate 141 on the lower part 21a is released. When the pressure of the cam plate 141 is released, the yarn guide rod 20 rises under the force of the spring 142, and the yarn feeding part 23 retracts relative to the toothed opening S. In this way, by causing the yarn feeding opening 23a of the yarn guide 1 that is not feeding yarn to retract relative to the toothed opening S, the collision between the yarn feeding part 23 of the yarn guide 1 that is feeding yarn and the yarn feeding part 23 of the yarn guide 1 that is not feeding yarn can be mitigated.

[0085] The following describes how the height of the yarn feeder 23a is adjusted. The yarn guide 1 can adjust the height of the yarn feeder 23a during yarn feeding according to the weaving conditions. When adjusting the height of the yarn feeder 23a, the vertical position of the connecting plate 24 relative to the rod 22 is adjusted by changing the fixing position of the screw 40 in the length direction of the elongated hole 24a used for adjusting the yarn feeder position. By adjusting the vertical position of the connecting plate 24 relative to the rod 22, the height of the yarn feeder 23a can be adjusted.

[0086] Furthermore, the rod 22 and the connecting plate 24 are fixed by screws 40 below the shuttle 130. Therefore, the height of the connecting plate 24 relative to the rod 22 can be adjusted without bypassing the shuttle 130, thus making it easy to adjust the height of the yarn feed opening 23a during yarn feeding.

[0087] Here, when adjusting the height of the yarn feeder 23a to match the knitting conditions, if the yarn feeder 23 is moved in the same direction as the guide groove 11 of the rising force application section guides the rod 22, the position of the yarn feeder 23a deviates from the center plane of the front and rear needle beds 110. Therefore, as the yarn feeder 23a moves up and down, there is a concern that it might move away from the area where it can feed yarn to the hook position located on the toothed side S.

[0088] Furthermore, by moving the yarn guide rod 20 forward and backward relative to the toothed edge S, in the feeding knitting of yarn fed by two yarn guides 1 simultaneously, the position of the yarn feeder 23a of the yarn feeder 1, which maintains a state delayed compared to the usual yarn guide 1, can be improved, allowing knitting to be performed by imparting a height difference between the main yarn and the feed yarn. In this way, when the yarn feeder 23a moves up and down due to the forward and backward movement of the yarn guide rod 20, there is also a concern that the yarn feeder 23a might leave the area where yarn can be fed.

[0089] Therefore, in the flat knitting machine 100 of this embodiment, the structure of the yarn feeder side guide 31 and the yarn guide base side guide 32 reduces the offset of the front-to-back position of the yarn feeder 23a as it moves up and down. Hereinafter, we will mainly use... Figure 5 and Figure 6 The operation of the yarn feeding section 23 when the yarn feeding opening 23a rises during yarn feeding is explained. Figure 5 This indicates the state before the yarn feeder 23a rises. Figure 6 Indicates from Figure 5 The state shown is the state in which the yarn feeder 23a rises.

[0090] When the lever 22 is raised by the up-and-down movement drive mechanism 140, the yarn feeding part 23 is guided upward by the yarn guide rod guide 30. Additionally, by shifting the elongated hole 24a for adjusting the yarn feeding position upward relative to the screw 40, when the position of the connecting plate 24 relative to the lever 22 is shifted upward, the yarn feeding part 23 is guided upward by the yarn guide rod guide 30.

[0091] More specifically, regarding the yarn feeding section 23, the yarn feeder-side guide receiving section 23b is guided by the yarn feeder-side guide groove 31a of the yarn feeder-side guide section 31, and the yarn guide base-side guide receiving section 23c of the yarn feeding section 23 is guided by the yarn guide base-side guide groove 32a of the yarn guide base-side guide section 32, for example from... Figure 5 The position shown rises to Figure 6 The position is shown. Here, the yarn feeder side guide groove 31a of the yarn feeder side guide 31 guides the yarn feeder side guide receiving part 23b along a trajectory parallel to the trajectory of the rod 22 based on the up-and-down movement drive mechanism 140. In contrast, the yarn guide base side guide groove 32a of the yarn guide base side guide 32 is formed to guide the yarn guide base side guide receiving part 23c in a direction inclined away from the tooth S in the front-to-back direction compared to the length direction of the rod 22 at its upper end. Therefore, the inclination of the yarn feeder 23 changes towards a direction close to the horizontal direction when moving upward.

[0092] By changing the inclination of the yarn feeding section 23 towards a near-horizontal direction, the front-to-back position of the yarn feeding opening 23a does not shift towards the rear side of the needle bed 110, and the yarn feeding opening 23a moves in a generally vertical direction. In this way, the yarn feeding opening 23a can be raised while suppressing the offset of its front-to-back position from the center plane P of the front and rear needle beds 110. Here, the center plane P is a vertical plane passing through the front and rear centers between the front and rear needle beds 110. Similarly, while suppressing the offset of the front-to-back position of the yarn feeding opening 23a from the center plane P of the front and rear needle beds 110, for example, the yarn feeding opening 23a can be raised from... Figure 6 The position shown descends to Figure 5 The location shown.

[0093] In this way, the offset of the yarn feeder 23a from the center plane P of the front and rear needle beds 110 can be reduced as the yarn feeder 23a moves up and down, and thus the situation where the yarn feeder 23a leaves the area where yarn can be fed can be suppressed as the yarn feeder 23a moves up and down.

[0094] The following uses Figure 7 and Figure 8The second embodiment of the flat knitting machine 100 of the present invention will be described below. Hereinafter, the same reference numerals will be used to refer to the same structures as in the first embodiment, and descriptions will be omitted.

[0095] The second embodiment of the flat knitting machine 100 differs from the first embodiment in that the yarn guide rod guide 30 replaces the yarn guide base side guide 32 with a yarn guide base side guide 33.

[0096] The lower part of the yarn guide base-side guide portion 33, like the yarn guide base-side guide portion 32, is formed to extend horizontally in a direction relative to the guiding direction of the lifting force application portion guide groove 11 relative to the rod portion 22. The upper part of the yarn guide base-side guide portion 33 is bent vertically in a direction relative to the extending direction of the lower part of the yarn guide base-side guide portion 33, at a position where the height of the yarn feed opening 23a is higher than the yarn feed range. A yarn guide base-side guide groove 33a is formed in the yarn guide base-side guide portion 33 in a shape corresponding to the yarn guide base-side guide portion 33. A yarn guide base-side guide receiving portion 23c is housed within the yarn guide base-side guide groove 33a.

[0097] If the rod 22 is raised by the up-and-down moving drive mechanism 140, or if the elongated hole 24a for adjusting the yarn feed position is offset upward relative to the screw 40, then the yarn feed side guide receiving part 23b is guided by the yarn feed side guide groove 31a of the yarn feed side guide part 31, and the yarn guide base side guide receiving part 23c of the yarn feed part 23 is guided by the yarn guide base side guide groove 33a of the yarn guide base side guide part 33. For example, the yarn feed part 23... Figure 7 The position shown is towards Figure 8 The position shown rises. The yarn feeder 23a moves vertically within the yarn feeding range via the guide portion 33 on the base side of the yarn guide. On the other hand, when the yarn feeder 23a is located above the yarn feeding range, and more specifically, when the guide portion 23c on the base side of the yarn guide is located above the bend of the guide portion 33 on the base side of the yarn guide, it moves in the front-back direction away from the toothed opening S as the yarn feeder 23a rises. This further suppresses the possibility of the yarn feeding portions 23 colliding with each other.

[0098] The following uses Figure 9 and Figure 10 The following describes the flat knitting machine 100 according to the third embodiment of the present invention. Hereinafter, the same reference numerals are used for the same components as in the first embodiment, and descriptions are omitted.

[0099] The flat knitting machine 100 of the third embodiment differs from the flat knitting machine 100 of the first embodiment in the following aspects: the yarn guide rod 20 has an elastic deformation portion 24A instead of the connecting plate 24; the yarn feeding portion 23 has a protrusion 23e; and the yarn guide rod guide member 30 has a guiding elongated hole 34 instead of the yarn feeding port side guide portion 31 and the yarn guide base side guide portion 32.

[0100] An elastically deformable portion 24A is provided between the rod portion 22 and the yarn feeding portion 23, and the rod portion 22, the yarn feeding portion 23, and the elastically deformable portion 24A are formed as a single unit. A protrusion 23e protruding in the left and right direction is formed on the upper part of the yarn feeding portion 23.

[0101] The elongated guide hole 34 of the yarn guide rod guide 30 is formed to extend vertically towards the guide groove 11 of the upward force application part in the direction of guiding the rod part 22. The protrusion 23e is inserted into the elongated guide hole 34.

[0102] If the rod 22 is raised by the up-and-down movement drive mechanism 140, the protrusion 23e is guided by the guide elongated hole 34 and moves from the lower end to the upper end of the guide elongated hole 34, thereby feeding the yarn part 23, for example, from... Figure 9 The position shown is towards Figure 10 The position shown rises. Through the guidance of the elongated guide hole 34 on the protrusion 23e and the elastic force of the elastic deformation part 24A, the inclination of the yarn feeding part 23 changes towards a near-horizontal direction as it moves upward. The protrusion 23e is guided by the elongated guide hole 34, thereby causing the yarn feeder 23a to move vertically within the yarn feeding range.

[0103] It should be noted that, in the third embodiment, the connecting plate 24 is not provided. Therefore, a component corresponding to the elongated hole 24a for adjusting the yarn feed position is provided between the upper and lower parts of the rod 22. By adjusting the height of the lower part of the rod 22 relative to the upper part of the rod 22, the height of the yarn feed 23a can be adjusted.

[0104] As described above, in each embodiment, the yarn feeder 23a can be moved vertically while suppressing the offset of its front and rear positions from the center plane P of the front and rear needle beds 110. Here, the center plane P is a vertical plane passing through the front and rear centers between the front and rear needle beds 110. Therefore, it is possible to prevent the yarn feeder 23a from leaving the area where yarn can be fed as it moves vertically.

[0105] The various embodiments of the present invention have been described above, but the present invention is not limited to the above embodiments, and appropriate modifications can be made within the scope of the technical concept of the invention as described in the claims.

[0106] For example, the conversion unit including the yarn feeder side guide 31, the yarn feeder side guide receiving part 23b, the yarn guide base side guide 32, and the yarn guide base side guide receiving part 23c can be applied regardless of the configuration of the shuttle 130. The shuttle 130 is not limited to being arranged radially relative to the center of the front and rear needle beds 110 in a side view; for example, it can also be as described in European Patent Publication EP 3115491A1. Figure 4 The yarn guide 20 is arranged horizontally as described in (b) and (c). With the shuttle 130 arranged in this way, the yarn guide 20 moves up and down in the vertical direction. However, in order to feed yarn through the yarn feeding section 23 of each yarn guide 20, the yarn guide 20 is formed with a curved section that bends towards the toothed opening S. When a yarn feeding opening height adjustment unit, such as a long hole 24a for adjusting the yarn feeding opening position, is provided in a portion lower than the curved section, a conversion unit including a yarn feeding opening side guide 31, a yarn feeding opening side guide receiving section 23b, a yarn guide base side guide 32, and a yarn guide base side guide receiving section 23c can also be used. In this case, the yarn feeding section 23 moves forward and backward along the portion lower than the curved section via the guide unit.

[0107] In addition, the direction of movement of the yarn feeder 23a caused by the changing unit including the yarn feeder side guide 31, the yarn feeder side guide receiving part 23b, the yarn guide base side guide 32, and the yarn guide base side guide receiving part 23c does not have to be strictly vertical, as long as it is more vertical than the direction of the guide of the rod 22 caused by the rising force application part guide groove 11.

[0108] Furthermore, the up-and-down movement drive mechanism 140 is not limited to the case where the yarn guide rod 20 is moved up and down by the cam plate 141. For example, as described in Japanese Patent Publication No. 2012-524842, the yarn guide rod 20 can be moved up and down by a drive rod, or the yarn guide rod 20 can be moved up and down by a gear and rack.

[0109] In addition, the yarn feeder height adjustment unit adjusts the height of the yarn feeder 23a during yarn feeding by changing the fixing position of the screw 40 in the length direction of the elongated hole 24a for adjusting the position of the yarn feeder. However, for example, as described in Chinese Patent Publication CN 210711959U, the height of the yarn feeder 23a during yarn feeding can also be adjusted by using a motor to adjust the height of the cam plate 141.

[0110] Alternatively, the flat knitting machine 100 may not need to have a vertical movement drive mechanism 140 for moving the yarn guide bar 20 up and down. In this case, the yarn feeding part 23 may not need to be connected to the bar part 22, and may be connected to the yarn guide bar guide member 30.

[0111] In the first embodiment, the yarn guide rod 20 is provided with a guide receiving portion (a guide receiving portion 23b on the yarn feeder side and a guide receiving portion 23c on the yarn guide base side), and the yarn guide rod guide member 30 is provided with a guide groove (a guide groove 31a on the yarn feeder side and a guide groove 32a on the yarn guide base side). However, it is also possible to provide a guide receiving portion on the yarn guide rod guide member 30 and a guide groove on the yarn guide rod 20. In this case, the guide groove can be provided on the side of the yarn feeder 23.

Claims

1. A flat knitting machine (100), comprising: At least two needle beds (110) are arranged side by side in the longitudinal direction, facing each other across the toothed edge (S); A shuttle (130) is mounted above the needle bed (110); The base (10) of the yarn guide is movably disposed along the shuttle (130) on a portion of the path that supplies the knitting yarn to the knitting needle (111); The yarn guide (1) has a yarn inlet (23a) for supplying knitting yarn to the knitting needles (111) and a base (10) of the yarn guide; and The yarn feeder height adjustment unit (24a, 40) adjusts the height of the yarn feeder (23a) during yarn feeding, wherein... The yarn guide (1) comprises: The yarn guide rod (20) has the yarn feed opening (23a); The transformation units (23b, 23c, 31, 32, 33, 34) change the moving direction of the yarn feeder (23a); A yarn guide rod guide (30) is supported on the base (10) of the yarn guide and supports the changing units (23b, 23c, 31, 32, 33, 34); and The guiding unit (11) guides the yarn guide rod (20) in a guiding direction that is inclined relative to the vertical direction. The transformation units (23b, 23c, 31, 32, 33, 34) are disposed on the yarn guide rod (20) and the yarn guide rod guide (30), and at least within the height range of the yarn feed opening (23a) that can feed yarn to the hook position, change the moving direction of the yarn feed opening (23a) according to the change of the height of the yarn feed opening (23a) to a direction that is more vertical than the guiding direction.

2. The flat knitting machine (100) according to claim 1, wherein, The yarn guide rod (20) has a yarn feeding part (23) with the yarn feeding port (23a). The transformation units (23b, 23c, 31, 32, 33, 34) include: A yarn feeder side guide receiving part (23b) is provided on the yarn feeder (23a) side, either on the yarn feeder (23) or on the yarn guide rod guide (30); A guide receiving part (23c) on the base side of the yarn guide is provided on either the yarn feeding part (23) or the yarn guide rod guide (30) on the base side of the yarn guide (10); A yarn feeder side guide (31) is provided on the yarn feeder (23a) side, on the other side of the yarn feeder (23) and the yarn guide rod guide (30), to guide the yarn feeder side guide receiving part (23b) with a trajectory parallel to the guiding direction; and The yarn guide base side guide (32, 33) is provided on the yarn guide base (10) side, on the other side of the yarn feed part (23) and the yarn guide rod guide (30), and guides the yarn guide base side guide receiving part (23c) in a direction inclined away from the tooth (S) in the front-back direction relative to the guiding direction along the upper end of the yarn feed part (23).

3. The flat knitting machine (100) according to claim 1, wherein, The yarn guide rod (20) has the following features: The rod (22) is guided in the guiding direction by the guiding unit (11) and is driven to move up and down by the up-and-down moving drive mechanism (140); and The yarn feeding part (23) is connected to the rod part (22) and is provided with the yarn feeding port (23a).

4. The flat knitting machine (100) according to claim 3, wherein, The yarn feeding part (23) and the rod part (22) are formed independently. The yarn feeding port (23a) is connected to the rod part (22) in a direction that is different from the guiding direction of the yarn guide rod (20) and changes position back and forth relative to the rod part (22).

5. The flat knitting machine (100) according to claim 3 or 4, wherein, The yarn guide rod (20) has a connecting part (24) which is disposed between the rod part (22) and the yarn feeding part (23) to connect the rod part (22) and the yarn feeding part (23). The connecting part (24) is fixed to the rod part (22) at a position lower than the shuttle (130) so that its vertical position relative to the rod part (22) can be adjusted by the yarn feed height adjustment unit (24a, 40).

6. The flat knitting machine (100) according to claim 3 or 4, wherein, The guiding unit (11) is disposed at the base (10) of the yarn guide. The shuttle (130) is arranged radially relative to the center of the front and rear needle beds (110) in a side view.

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