Classifications

• • D—TEXTILES; PAPER
  • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
  • D04B—KNITTING
  • D04B27/00—Details of, or auxiliary devices incorporated in, warp knitting machines, restricted to machines of this kind
  • D04B27/10—Devices for supplying, feeding, or guiding threads to needles
  • D04B27/24—Thread guide bar assemblies
  • D04B27/32—Thread guide bar assemblies with independently-movable thread guides controlled by Jacquard mechanisms
• • D—TEXTILES; PAPER
  • D03—WEAVING
  • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
  • D03C3/00—Jacquards
  • D03C3/20—Electrically-operated jacquards

Definitions

• the present invention relates to a multilayer piezoelectric actuator that replaces a conventional jacquard mechanism with a continuous thread.
• the present invention relates to a needle selection method and a device of a cloth-making machine for selecting a guide needle or a head needle with evening as a drive source.
• the jerking device is located on the upper part of the machine frame, such as a loom or a knitting machine, and has a guide needle or a head needle and a jig. It is connected with a thread through the jacquard device, and the needle selection command from the jacquard device is executed through this thread. Therefore, the thread is suspended from the jacker at the top of the machine by the same number as the guide needle or the hand needle. This is a notable drawback in terms of the ability to simplify and speed up machines. Originally, a mechanism that can directly and individually drive the guide needle or the hand needle is desired.However, the drive mechanism must be tightly packed in a limited space. Conventional electromagnets can be large to incorporate
• the purpose of the present invention is to transmit the driving force to the guide needles and the hand needles of the cloth-making machine efficiently even with a very small displacement. It is an object of the present invention to provide a needle selection method and a device which can open and close the transmission independently.
• the present invention employs a laminated type as a piezoelectric actuator and produces the characteristics of the actuator and provides a guide.
• the needle or the needle is selected.
• the needle selection method is as follows. In a cloth-making machine having a plurality of guide needles through which a thread is inserted and which can be individually controlled, or a plurality of head needles, each of the above-mentioned needles is selected. A stacked piezoelectric actuator is connected to or near the needle or the hand needle, and the individual piezoelectric actuator is provided with the individual needle. Displacement in a straight line direction according to the choice The amount of displacement of the needle itself, which directly or indirectly controls the displacement of the guide needle or the hand needle. It is.
• the displacement of the laminated piezoelectric actuator in the direction of the straight line is converted into the displacement of a guide needle or a displacement of a needle. Since the power is possible, the installation space for the factory can be minimized. Therefore, it is possible to provide the maximum number of guide needles or head needles to be installed as much as possible, and a fabricating machine that does not require a thread is realized.
• this actuator is a laminated type, the reaction speed of the piezoelectric actuator corresponding to the control electric signal is fast, and the response can be made in seconds.
• the speed of the fabric-making machine can be improved because the speed is more than 10 times faster than that of the conventional Jacquard machine.o
• One of the needle selection devices according to the present invention is provided on a guide rod or a needle that is connected to a needle through which a thread is inserted, and on a part of the slide rod.
• a driving member having a hook which engages with an engaging portion such as a hole or a step portion and reciprocating the slide bar; and a connection between the hook and the engaging portion.
• the driving member is reciprocated in synchronization with the fabric-making movement of the machine, and the control signal to the actuator is off when the control signal to the actuator is off.
• the moving rod does not move and remains stationary.
• the tip of the guide needle is moved by one point by acting on the convex portion of the dropper force flaring guide locked on the slide bar. Page has been moved.
• the opening movement is not performed.
• the actuating signal is turned on, the driving force is transmitted to the working lever through the actuating force and the power point.
• the lever is bent around the fulcrum shaft, and a driving force is applied to the working point of the working lever, whereby the hook is pushed into the hole and the driving is performed.
• the sliding rod is pulled up by the pulling force of the member.
• a laminated piezoelectric element which is engaged with a part of a guide needle through which a thread is inserted or has a contact portion.
• the laminated piezoelectric actuator is provided so as to be engaged with a part of the guide needle or to have a contact point. Therefore, the displacement in the linear direction based on the control signal of the actuator is directly affected by the bending displacement of the guide needle.
• the device is compacted, the accumulated displacement error is eliminated, and an accurate displacement can be obtained.
• FIG. 1 shows an example of a needle selecting device of a warp knitting machine as an example of a needle selecting device for implementing the needle selecting method of the present invention.
• FIG. 1 shows an example of a needle selecting device of a warp knitting machine as an example of a needle selecting device for implementing the needle selecting method of the present invention.
• Figure 2 shows the relationship between the franchising guide and the dropper.
• the plan view shows the dropper inactive.
• FIG. 3 is a front view showing the relationship between the franchising guide and the dropper, and shows the operating state of the pump.
• FIG. 4 is a side view showing the engagement relationship between the action lever and the product H-type piezoelectric actuator.
• FIG. 5 is a side view showing an engagement relationship between another example of the action lever and the laminated piezoelectric actuator.
• FIG. 6 is a perspective view showing an example of an action lever.
• FIG. 7 is a perspective view showing an example of a sliding hook plate.
• FIG. 8 is a side view of the needle selection device of the embodiment showing an example in which the laminated piezoelectric actuator is directly applied to a guide needle (a franchise guide).
• FIG. 9 is a side cross-sectional view of the needle selecting device in FIG.
• FIG. 10 is a perspective view showing another example of the franchising guide.
• FIG. 11 is a front view showing another embodiment of the needle selector.
• FIG. 2 is a perspective view showing a modification of the flaring guide.
• Fig. 3 is a side sectional view showing one embodiment of a needle selecting device in a loom.
• FIG. 1 is a side sectional view of one embodiment of an apparatus showing a case of a warp knitting machine of a needle selecting apparatus for implementing a needle selecting method of the present invention. is there .
• Reference numeral 1 denotes a flaring guide, which is an example of a guide needle, and has a hole 2 at the tip end for passing a handle thread.
• Numeral 3 is a drono, which slides in a groove formed in the force 4 in a groove.
• the upper end of the flank guide 1 is located at the end 5 and one of the forces 4. As shown in FIG. 2, it is arranged so as to overlap with the dropper 3 on the same surface as shown in FIG.
• the front guide 1 When you drop down while sliding down the groove of the dropper 3 and the force 4, the front guide 1 is pushed to the left and the front guide 1 is moved from the original position. It moves to the left by a predetermined distance and displaces (see the broken line in Fig. 2 and Fig. 3).
• a driving rod 6 is attached to the upper part of the dropper 3, and slides up and down in a groove 8 of a pivoting support plate 7.
• a hole 9 for needle selection is provided on the upper part of the action rod 6, and a hook 10 as a driving member that slides toward the hole 9 is provided.
• the hook 11 is formed by making a cut in the-part. The hook 11 is, for example, cut off from the surface of the sliding hook plate 10 as shown in FIG. 7 and normally held in the state shown in FIG. Pressing from the right side of the drawing causes the hook portion 11a to protrude in a direction opposite to the hole portion 7.
• the mechanism for pressing the hook 11 is composed of an action lever 12 and a base 13. In this embodiment, the mechanism acts on a width of 1 inch, and the action of the lever 11 is performed. It has a comb shape (see Fig. 6).
• the fulcrum 14 is formed by machining the notch 16, and the shallow recess is provided at the power point 15. The tip of the Cl is held so as to hold it.
• metal pieces 18 and 19 are adhered to both ends, and the screw 20 is lightly pressed to the point of force 15 with a screw 20. I try not to produce it.
• the notch 16 is designed to have about 14 fulcrum points and a thickness of about 0.1 to ⁇ .2 jobs.
• the material to be used can be brass, phosphor bronze, steel, shape memory alloy, etc. Lin bronze was used. In the above embodiment, a step was provided in the same place in place of the hole 9 so that You may make it engage with the force of 11 and the hook part 11a.
• the flaring guide 1 is always pushed downward by the soft spring 21, and the sliding hook plate is provided. Move 10 up and down like arrows. Although the mechanism for moving is not specifically described, operating conditions synchronized with the knitting timing are given.
• the sliding hook plate 10 is located at the lowest position, the force of the hook 11 and the hook 11a correspond to the front of the hole 9, and in this case, A DC voltage of 100 V is applied to the laminated piezoelectric actuator at night.
• the laminated piezoelectric actuators used here, for example, are manufactured by Tokin Co., Ltd. and have a length based on NLA-1.4 x 3 x 9 Use an 18 ram one.
• the displacement of this actuator over night was as small as 13, but it had a generating force of 14 kg. Therefore, if the length between the fulcrum and the fulcrum of the action lever 12 is defined as 1 recitation, and the action point of the action lever 12 is placed 30 mm above the fulcrum 14 However, the generated force at the point of action is 4666 g, but the stroke of the displacement at the point of action is about 0.4 ram.
• the sliding hook plate 10 is made of steel with a width of ⁇ 1 inch and a thickness of about 2 thighs (see Fig. 7). When the sliding hook plate 10 rises in force, the hook 11 rises while being pressed by the action lever 12 acting as described above. The rod enters the hole 9 of the moving rod and is raised by pulling it. As a result, the dropper 3 is raised, and the hole 2 at the same end through which the pattern yarn is passed can be moved to the position shown in FIG. Each part of the fulcrum 14 and the power point 15 is shown in FIG.
• each part of the fulcrum 14 and the force point 15 can be used by bonding an action lever 23 to an elastic thin plate 22 as shown in FIG.
• the thin plate 22 is attached to the base 24 and is attached to it.
• the elastic thin plate 22 include steel, shape memory metal, brass, It can be formed by using materials such as stainless steel and phosphor bronze.
• FIGS. 8 to 12 show another embodiment of the needle making device.
• Reference numeral 25 denotes a guide needle called a flaring guide, which has a width of 4 mm, a thickness of 4 mm, and a spring strength of 80 mm in length.
• One end is provided with a hole 3 ⁇ through which the thread is inserted, and the other end is fixed to the upper end 26 a of the force bar 26.
• the lower end 26 b of the force bar 26 is provided with a groove 27, which regulates the width of the groove 27, the partial force, and the amount of lateral movement of the flaring guide 25. I'm angry.
• the laminated piezoelectric actuator 17 with dimensions of 1.4 X 3 X 18 rara (change amount 13 m) was connected to the flaring guide 25 as shown in Fig. 8.
• the upper end is brought into contact with the base 29 so as to be along the fixed end side, and the appropriate dimension (30 mm in this embodiment) is taken from the fixed end of the lantern 25.
• a projection member 28 is attached to the lower end of the laminated piezoelectric actuator, and the upper and lower ends of the laminated piezoelectric actuator unit 17 are attached to the pedestal 29 and the projection member. Insert them so that there is no gap between them.
• the displacement of the multilayer piezoelectric actuator 17 is 4.5 ⁇ .m, which is a good force.
• the flank 25 has a groove. Two 7 will be pressed hard.
• the displacement can be used up to 18 gauge inches.
• the protrusions 28 may be formed by punching out a part of the flank with a press as shown in FIG. No.
• Reference numeral 31 denotes a lead wire, which penetrates the side surface of the force bar 26 and is connected to a control unit (not shown) at the rear surface by a unity member 32. .
• a U-shaped bending process is performed on a very small portion of the franchis 25a, and the inside of the U-shaped portion 34 is formed. It can be used by mounting the integrated piezoelectric actuator on the surface.
• a window is cut out in the U-shaped portion 34 of the lantern guide 25 b as shown in FIG. 12 to obtain a multilayer piezoelectric actuator. If it is made to be flush with the outer surface 35 of the flaring guide 25b, the dimension W can be made as narrow as possible.
• the U-shape has a curved shape so that it can be fitted with the laminated actuary-17 in between. Therefore, the installation space at the factory can be reduced, which is advantageous for gaging. In these cases, the left and right displacements of the flank on the side through which the thread passes can be calculated in the same manner as in the previous embodiment.
• FIG. 13 is a side sectional view of one embodiment of the needle selecting device in the loom.
• Reference numeral 50 denotes an action lever, in which a laminated piezoelectric actuator 17 is internally provided, and an upper end 17a of the action lever serves as a power point. ⁇
• the contact 38 attached to the upper part of the displacement part 37 a presses the upper end of the fixing member 39.
• the fulcrum for this pressing is 40, and as a result
• the hook 11 is pressed by the displacement portion 37b.
• the displacement portions 37a and 37b are connected to the spring 41 so that the displacement portions 37a and 37b can follow the contraction caused by the disconnection of the actuator 17/17. They are encouraged to be drawn together.
• the driving hook plate 1 ⁇ with the hook 11 is moved up and down by another mechanism. However, when the hook 11 is pressed, the diaper 4 at the upper end of the sliding rod 4 2 3, the slide bar 42 rises, and the hand needle 44 connected thereto also rises, opening the evening thread 45.
• the working lever 50 is fixed to the bracket 51 at the lower end.
• the action lever 50 is configured as an integral body including the fixing member 39, but it is also possible to configure the fixing member 39 as a separate member. There is no end to it.
• the sliding bar 42 is penetrated so as to be able to move up and down in the force bar 52.
• the present invention is not limited to;!
• the needle method and the needle selecting device the needle can be selected by using the displacement in the linear direction generated by applying a voltage by using a multilayer piezoelectric actuator.
• the size can be extremely reduced, and the driving force can be efficiently transmitted to the guide needle and the hand even with a small displacement.
• the displacement of the actuator is linear, the device itself has a simple structure, and the piezoelectric actuator corresponding to the electric signal can be used. Since the reaction speed is on the order of seconds, it is possible to achieve a speed of 1 ⁇ times or more faster than that of the conventional jaw-force mechanism, and as a result, the number of revolutions can be increased. It can greatly contribute to the improvement of sex.

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• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Knitting Machines (AREA)

Applications Claiming Priority (4)

Publications (1)

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ID=26505010

Family Applications (1)

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Cited By (8)

Citations (3)

Family Cites Families (10)

• 1992
  • 1992-08-07 JP JP23274892A patent/JPH0649752A/ja active Pending
• 1993
  • 1993-06-02 WO PCT/JP1993/000745 patent/WO1993025744A1/ja active Application Filing
  • 1993-06-10 TW TW82104611A patent/TW221468B/zh active

Patent Citations (3)

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