JP3034306U - Jacquard device for circular knitting machine - Google Patents

Abstract

(57) [Problem] To provide a jacquard device capable of providing another kind of jacquard path without replacing a cam. SOLUTION: One movable cam which can reciprocate along one predetermined direction and form another needle height on a fixed cam, and one drive mechanism used to drive the movement of the movable cam are provided. In addition, when another kind of needle weaving height is required, the user can immediately obtain the necessary needle weaving height by moving the movable cam without replacing the cam.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a type of jacquard machine for a circular knitting machine, and more particularly to a jacquard machine attached to a circular knitting machine and capable of selectively guiding and advancing a knitting needle to a jacquard position or a plain weave position.

[0002]

[Prior art]

 The needle selection mechanism attached to the circular knitting machine selectively pushes up the warp needles or sinkers, thereby forming piles, holes, or jacquard pattern knitted fabrics with patterns on the cloth surface. This is a well-known technique. When the above-mentioned warp or sinker does not perform jacquard knitting, it operates at a certain empty needle height or needle weaving height on the cam, and when performing jacquard knitting, the knitting needle or sinker moves at another different needle weaving height on the cam. To enter. According to the traditional technique, if the knitting needle is to enter another needle weaving height, a new jacquard mechanism, such as a pattern wheel, has to be newly adjusted. It is also necessary to replace the existing cam. Performing such replacement work on a circular knitting machine having many cams requires time and effort for replacement, resulting in poor replacement efficiency.

US Pat. No. 4,956,981 provides a knitting needle with a cam for a total of four positions, which is a needle weave, a hanging needle, an empty needle, or a needle, and the cam is annularly rotatable in one rotation. It is provided on a special cam sleeve, and they are vertically or laterally closely overlapped with each other and fitted together to form an integral unit, so that by simply rotating the cam sleeve, the required needle weaving height can be obtained when needed. In this way, the knitting needle was able to reach the required working height. However, although this design allowed the required needle weaving position to be obtained without changing the cam, it was relatively inconvenient to use because many cam sleeves had to be manually adjusted. .

[0004]

An object of the present invention is to provide a jacquard device capable of providing another kind of jacquard path without replacing one kind of cam. The jacquard device includes one movable cam that can reciprocate along a predetermined direction on a fixed cam and can form another needle weaving height, and one movable cam that is used to drive the movement of the movable cam. A drive mechanism shall be provided so that when another kind of needle weaving height is required, the necessary needle weaving height can be immediately obtained by moving the movable cam described above even if the user does not replace the cam. .

Another object of the present invention is to provide a jacquard device that can change the jacquard path very easily and quickly. That is, the driving mechanism for driving the movement of the movable cam is composed of one step motor and a crank rod, which allows quick adjustment work by a computer or a digital control system.

[0006]

[Means for Solving the Problems]

 The invention according to claim 1 is a circular knitting machine having a fixed cam 1 fixed to a circular knitting machine, which has an empty needle track 5 and a needle weave track 4 for guiding a knitting needle 3 to reach an empty needle height and a needle weaving altitude. In the jacquard device of a machine, the fixed cam 1 includes at least one groove portion 11 and a movable cam 2 that is arranged in the groove portion 11 and is movable in the groove portion 11. Is used to move in the groove 11 to reach a relatively high position to form another track different from the above-mentioned track, or move in the groove 11 to another It reaches one comparatively low position and does not form another track described above, and the movable cam 2 is moved to the above-mentioned relatively high position or relatively low position by one driving mechanism, and this driving mechanism is One servo motor 8 and one servo motor 8 that is rotated by the drive of the servo motor 8. A cam 80 and a crank rod 81 whose one end pivotally contacts an eccentric position of the cam 80 are provided. Another end of the crank rod 81 pivotally contacts the movable cam 2, and the servo motor 8 drives the movable cam 2. Thus, the jacquard device of the circular knitting machine is characterized by forming or not forming another one of the tracks described above by moving the groove 11 inside.

A second aspect of the invention is the jacquard device of the circular knitting machine of the first aspect, in which one track other than the track is the empty needle track 5, the needle weave track 4, or the hook needle track 6. It is a jacquard device for a circular knitting machine, which is characterized by any one of them.

[0008]

[Embodiment of the invention]

 Please refer to FIG. The jacquard device of the present invention comprises one fixed cam 1, a movable cam 2 and a drive mechanism used to drive the movable cam 2.

The fixed cam 1 described above is installed at a fixed point on the outer circumference of the cylinder of the circular knitting machine, and as shown in FIG. 1, the inner surface 10 of the fixed cam 1 facing the cylinder has a bar of the knitting needles 3. There are provided a plurality of tracks used for inserting the knitting needle 31 and guiding the needle of the knitting needle 3 or the needle. The orbit includes at least a weaving orbit 4 for raising the knitting needle 3 to reach a needle weaving height, and an empty needle orbit 5 for maintaining the knitting needle 3 at an empty needle height. Both the above-mentioned needle weave orbit 4 and empty needle orbit 5 are grooves of equal width to be fitted on the above-mentioned inner surface 10, and a plurality of fixed cams 1 are connected so as to be arranged annularly outside the circumference of the cylinder. , The orbits owned by them are connected to each other, and the orbit, which starts again after making one round, is completed outside the cylinder of the circular knitting machine. As a result, when the fixed cams 1 arranged in an annular shape relatively move around a circular cylinder, the knitting needle 3 performs a needle weaving operation for a needle exit or a needle collection as the track undulates.

A feature of the present invention is to provide another type of jacquard track that can be formed immediately when necessary, in addition to the above-described predetermined weaving track 4 and empty needle track 5. In the present invention, an explanation will be given by taking as an example a hook path which allows the knitting needle 3 to reach the hook height. The hook path 6 is formed from the upper edge of the movable cam 2 installed on the fixed cam 1. The movable cam 2 has at least a rising surface 21 for reaching the hook height of the knitting needle 3 and a horizontal hook surface 22 for maintaining the knitting needle 3 at the hook height for a certain time. It is possible to move arbitrarily in one groove portion 11 on the back surface of the robot and reaches a relatively low position where one hook needle track 6 is not formed (see FIG. 4), or a comparison where the hook needle track 6 is formed. Reach a higher position. In order to ensure accuracy and flatness when the movable cam 2 is moved, a concave groove 23 and a protruding rail 110 are provided on the contact surfaces of the movable cam 2 and the groove portion 11, respectively. Is desirable. When the movable cam 2 is pushed up to reach the hook height, the rising surface 21 and the hook surface 22 hold a distance that allows one convex plate 12 on the fixed cam 1 and the butt 31 to pass, The band-shaped space formed by these distances is a so-called hanging needle track 6.

As shown in FIG. 5, the fixed cam 1 and the movable cam 2 are attached to one attachment sheet 13, and the attachment sheet 13 is attached to an appropriate place on the circular knitting machine. Among them, the mounting sheet 13 is further provided with a drive mechanism used for driving the movement of the movable cam 2 described above. This drive mechanism includes one servomotor 8, a cam 80 which is driven by the servomotor 8 to rotate, and a crank rod 81 whose one end pivotally contacts an eccentric position of the cam 80. Among them, the other end of the crank rod 81 is pivotally connected to the movable cam 2. Thus, if the user wants to increase the number of hook paths 6, the computer or other digital control method can be used to quickly drive the servo motor 8 to operate, and the movable cam 2 to move the hook. It only has to be elevated to the altitude that forms the track 6. Further, one positioning gate plate 82 and one position detector 83 are fixed to the tail end of the driving shaft of the servo motor 8, and the position detector 83 can further pass through both ends of the positioning gate plate 82. Wing pieces 821 and 822 are provided. Each time the cam 80 rotates 180 degrees, either of the two blade pieces 821, 822 reaches the position of the position detector 83. The position detector 83 is a kind of photoelectric element or other member having the same effect. Therefore, it is necessary to know whether or not the movable cam 2 has reached an accurate position by the position detector 83. You can

As shown in FIG. 6, when the needle selector (not shown in the figure) does not move the needle pushing rod 7 for pushing up the needle, the upper butt 71 and the lower bat of the needle pushing rod 7 are moved. Reference numeral 72 makes contact with the needle weave convex plate 14 or the hanging needle convex plate 15 on the fixed cam 1, and the butt 31 of the knitting needle 3 moves along this horizontal empty needle track 5. On the contrary, when the needle selector pushes the needle push rod 7 to bring it to the inclined state shown in FIG. 8, the upper butt 71 above the needle push rod 7 fits into the needle weave convex plate 14 and gradually rises. At the same time, the knitting needle 3 is pushed up to reach the needle weave track 4 at the upper edge of the convex plate 12, and the needle weaving operation is advanced. Finally, when the needle selector pushes up the needle pusher rod 7 to the inclined state shown in FIG. 11, the lower butt 72 of the needle pusher rod 7 fits into the hanging needle convex plate 15, and gradually rises, At the same time, the above-mentioned movable cam 2 is also pushed up to the position shown in FIG. 3, the butt 31 of the knitting needle 3 reaches the hanging needle height along the rising surface 21 and the hanging needle surface 22, and the knitting needle 3 moves. The hooking work proceeds, and the jacquard knitting operation proceeds.

[0013]

[Effect of the invention]

 By utilizing the drive mechanism and the movable cam when needed, without changing the fixed cam, the present invention can increase another required jacquard track in addition to the default track, which allows the circular knitting machine to operate. The jacquard fabric to be produced will have further changes. For example, as shown in the above-described embodiment, the empty needle or needle weave section is originally changed to a hanging needle tissue. Naturally, the above-described embodiment and the formation of the needle-loom path thereof were used for explaining the technical contents of the present invention, and do not limit the scope of the present invention, and are well-known to the technique of the present invention. Other changes in the weaving path that the object makes based on the present invention also belong to the technical scope of the present invention.

[Brief description of the drawings]

FIG. 1 is a perspective view of a local structure of the present invention, showing the structures of a fixed cam and a movable cam and their correlation positions.

FIG. 2 is a rear view of the fixed cam of the present invention.

FIG. 3 is a perspective view of the present invention, showing a state where a drive mechanism raises a movable cam.

FIG. 4 is another perspective view of the present invention, showing a state where the movable cam is not yet raised.

FIG. 5 is a side view showing the structure of the present invention, showing a situation where the jacquard device is attached to one attachment sheet.

FIG. 6 is an operation display diagram of the present invention, showing a situation in which the knitting needle is positioned at the air core height when the needle is not lifted.

FIG. 7 is an operation display diagram of the present invention, showing a situation in which the knitting needle reaches the needle weaving height when the knitting needle is raised.

FIG. 8 is a side view when the knitting needle of FIG. 7 is at the position AA.

FIG. 9 is a side view when the knitting needle in FIG. 7 is at a position BB.

FIG. 10 is an operation display diagram of the present invention, showing a state where the knitting needle reaches the jacquard height.

FIG. 11 is a side view when the knitting needle in FIG. 10 is at the position AA.

FIG. 12 is a side view when the knitting needle in FIG. 10 is at a position BB.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Fixed cam 10 ... Inner surface 11 ... Groove part
110 ... convex rail 12 ... convex plate 13 ... mounting sheet 14 ...
・ Knitting convex plate 15 ・ ・ ・ Hanging needle convex plate 2 ・ ・ ・ Movable cam 21 ・ ・ ・ Rising surface 22 ・ ・ ・ Hanging needle surface 23 ・ ・ ・ Ditch groove 3 ・ ・ ・ Knitting needle 3
DESCRIPTION OF SYMBOLS 1 ... Bat 4 ... Needle trajectory 5 ... Empty needle trajectory 6 ... Hanging needle trajectory 7 ... Needle pushing bar 71 ... Upper bat 72 ... Lower bat 8 ... Servo motor 81 ... crank rod 82 ... positioning gate plate 821, 822 ... wing piece 83 ... position detector

Claims (2)

[Utility model registration claims] 1. A circular knitting machine provided with a fixed cam 1 fixed to a circular knitting machine, having an empty needle orbit 5 and a needle orbit 4 for guiding the knitting needle 3 to the empty and altitude. The fixed cam 1 includes at least one groove 11 and a movable cam 2 disposed in the groove 11 and movable in the groove 11. To move to one relatively high position to form another trajectory different from the aforementioned trajectory, or to move within the groove 11 to form another relatively low trajectory. The movable cam 2 is moved to the above-mentioned relatively high position or relatively low position by one driving mechanism, and this driving mechanism
One servo motor 8, one cam 80 rotated by the drive of the servo motor 8, and a crank rod 81 having one end pivotally connected to the eccentric position of the cam 80, wherein another end of the crank rod 81 is The circular knitting machine is characterized in that it is pivotally connected to the movable cam 2 and the servomotor 8 drives the movable cam 2 to move in the groove portion 11 so as to form or not to form the other one orbit. Machine jacquard device. 2. A jacquard device for a circular knitting machine according to claim 1,
A jacquard device for a circular knitting machine, wherein one of the tracks and another track is any one of an empty needle track 5, a needlework track 4, and a hanging needle track 6.