JPH0213509Y2 - - Google Patents

Description

[Detailed description of the invention] [Purpose of the invention] (Field of industrial application) The present invention is a knitting machine that uses high-speed rotation and is incorporated into a circular knitting machine such as an electronic pattern circular knitting machine or a sock knitting machine. The present invention relates to an electromagnetic needle selection device.

(Prior art) Conventionally, electromagnetic needle selection devices for knitting machines incorporated in circular knitting machines such as electronic patterning circular knitting machines and sock knitting machines have been
It is constructed as shown in FIGS. 9 to 9.

That is, in FIGS. 5 to 9, the circuit board (machine frame main body) of the circular knitting machine has a knitting machine cylinder 1.
A large number of vertical grooves 2 are formed in the axial direction on the outer periphery of the knitting machine cylinder 1, and in each of the vertical grooves 2, a jack 3 having a respective butt 3a is attached to the knitting needle. (not shown) is slidably fitted so that it can move up and down. Also,
A support frame 11 formed in the shape of a rectangular tube is fixed to a base plate (machine frame main body) near the knitting machine cylinder 1 with mounting bolts 12. and as shown in FIG.
A back plate 13 made of a non-magnetic material and provided with vertical grooves 13a is detachably provided so that the knitting machine cylinder 1 can be oriented in the axial direction and replaced. Furthermore, a common metal member 14 made of magnetic material is arranged in the vertical groove 13a on the back plate 13 in a spiral shape with respect to the axis of the knitting machine cylinder 1. They are attached facing each other in the axial direction. Furthermore, this metal member 1
4, as shown in FIGS. 8 and 9, a pair of upper and lower electromagnets 15 and 16 are provided in parallel to each other, and each electromagnet 15 and 16 is connected to an electromagnetic coil 15a and 16a and an iron core. 15b and 16b. Furthermore, the metal member 14
As shown in FIG. 9, each electromagnetic plate 17 is provided so as to surround both sides of each of the electromagnets 15 and 16.
7, when the electromagnets 15 and 16 are energized, the magnetic field is formed in a closed loop to strengthen the magnetic force and to prevent magnetic interference between the electromagnets 15 and 16.

On the other hand, each support shaft 18 is mounted horizontally on the support frame 11 near the magnetic plate 17, and each support shaft 18 has a substantially T-shaped needle selection function. Each adsorption lever 19 having the above-mentioned electromagnet 1
The shafts are mounted so as to be alternately attracted to each of the iron cores 15b and 16b, and each of the suction rods 1
9, as shown in FIG. 8, one end thereof is integrally formed with a magnetic adsorption member 20 having a substantially T-shaped cross section, and the other end is tapered from an ultra-hard material. A select finger 21 is attached so as to be replaceable, and the select finger 21 is adapted to selectively push the butt 3a of the jack 3. Further, the free end of each of the magnetic plates 17 is always in contact with the middle of the suction lever 19, and when a pulse current from a control device (not shown) is applied to each of the electromagnets 15 and 16, The iron core (S pole) 15b of the one electromagnet 15 and the one attraction part 20a (N pole) of the magnetic attraction member 20 attract each other, and the iron core (N pole) 16 of the other electromagnet 16 attracts each other.
b and the magnetic attraction member 20 as well as the attraction part (N pole) 2
0b and they repel each other and are separated from each other.

Therefore, when the circular knitting machine is operated, the knitting machine cylinder 1 rotates at high speed and the knitting machine cylinder 1
A large number of jacks 2 attached to the outer periphery also rotate together. On the other hand, when a pulse signal is applied to each of the electromagnets 15 and 16 based on a pattern forming signal from an electronic control unit (not shown) into which the knitting program of the circular knitting machine is previously input, the results shown in FIGS. As shown in the figure, each iron core 1 of each electromagnet 15, 16
5b and 16b alternately attract one end surface part 20a and the other end surface part 20b of the magnetic attraction member 20 of the attraction lever 19 made of magnetic material, so that the attraction lever 19 is attached to the support shaft 18. Rock around. Then, the select finger 21 of the suction lever 19 selectively pushes each butt 3a of the jack 3 and slides the knitting needle (not shown) up and down, thereby creating a pattern in stockinette knitting. It's becoming like that.

(Problem to be solved by the invention) However, in the above-mentioned electromagnetic needle selection device for a knitting machine, the iron cores 15b and 16b of the electromagnets 15 and 16 are
directly alternately attracts one end surface 20a and the other end surface 20b of the magnetic attraction member 20 of the attraction lever 19, residual magnetism remains and obstructs the next attraction operation, reducing the attraction force of each electromagnet 15, 16. In addition to greatly reducing the vibration caused by the suction force, the suction rod 1
Vibration and noise are transmitted to the jack 3 through the select finger 21 of 9, and each electromagnet is turned on to improve the pattern creation function of stockinette knitting.
-There is a risk of making the OFF operation uncertain, and there is a problem in reducing the weight of the needle selection lever and the like for high-speed operation.

The present invention was developed in view of the above-mentioned circumstances, and it eliminates the generation of residual magnetism to reduce the vibration and noise associated with the operation of each electromagnet, and also controls the ON/OFF operation of each electromagnet. This makes it possible to reduce the weight of the needle selection lever and enable high-speed operation.
An object of the present invention is to provide an electromagnetic needle selection device for a knitting machine that eliminates wear of a needle selection lever and improves pattern output function and quality.

[Structure of the idea]

(Means for solving the problems and their effects) The present invention has a number of jacks slidably fitted around the outer periphery of the knitting machine cylinder to move the knitting needles up and down, and each jack is selectively pushed. In such a circular knitting machine, a support frame is provided on a base plate near the knitting machine cylinder, each metal member is independently provided on a back plate that is integrated with this support frame, and upper and lower parts are attached to each metal member. The lower pair of electromagnets are arranged side by side, and each magnetic frame is formed in each metal member so as to surround approximately a semicircumference of each electromagnet so as to form a closed loop of magnetic field when energized. A support shaft is mounted on the support frame beside the support shaft, an operating lever is pivotally attached to the support shaft, and each independent electromagnetic adsorption piece is attached to one end of the operating lever so as to attract each iron core of each of the electromagnets. Each sphere is embedded in each end face of each of the above-mentioned iron cores in contact with each of the magnetic attraction pieces, and a select finger is provided at the free end of the operating lever so as to selectively push the butt of the above-mentioned jack. In addition to eliminating the generation of residual magnetism and reducing noise, it also ensures the ON-OFF operation of each electromagnet, and reduces the weight of the suction lever etc. to enable high-speed operation. It is constructed to eliminate wear on the knitting needle lever.

(Example) Hereinafter, the present invention will be described with reference to an illustrated example.

It should be noted that the present invention will be described with the same reference numerals attached to the same constituent members as those of the above-described specific example.

1 to 4, on the outside of the support frame 11, a back plate 13 made of a non-magnetic material and provided with vertical grooves 13a is detachably attached so that the knitting machine cylinder 1 can be oriented in the axial direction and replaced. It's set up. Furthermore, in the vertical groove 13a on this back plate 13,
Each independent metal member 14a, 14 made of magnetic material
b forms a spiral with respect to the axis of the knitting machine cylinder 1 through the isolation members 22a and 22b made of non-magnetic material, and furthermore, It is worn. Furthermore, each metal member 14a, 14b has
A pair of upper and lower electromagnets 15 and 16 are provided in parallel with each other, and each electromagnet 15 and 16 is composed of electromagnetic coils 15a and 16a and iron cores 15b and 16b. Furthermore, the metal member 1
4a, 14b, as shown in FIG.
The electromagnetic frames 17a, 17b form a closed loop in the magnetic field when the electromagnets 15, 16 are energized, thereby strengthening the magnetic force. At the same time, magnetic interference between the electromagnets 15 and 16 is prevented.

On the other hand, as shown in FIG. 6, each support shaft 18 is mounted horizontally on the support frame 11 near the magnetic plate 17.
Each operating lever 19 having a needle selection function is mounted on the 8, and at one end of each operating lever 19,
Each independent suction piece 20a, 20b is integrally attached with a pin 23 so as to form a substantially T-shape, and each suction piece 20a, 20b is attached to each iron core 15b, 16b of each electromagnet 15, 16. At the other end of each operating lever 19, a tapered select finger 21 made of ultra-hard material is attached. The button 3a is selectively pushed.
Further, on each end face of each of the iron cores 15b, 16b that the adsorption pieces 20a, 20b contact, spheres 24a, 24b formed of steel balls are attached to each of the iron cores 15b, 16b.
Since it is slightly exposed and buried in the end face of the electromagnet 16b, the generation of residual magnetism is eliminated, and at the same time, each electromagnet 1
It is designed to reduce the vibration and noise that accompanies the operation of parts 5 and 16.

Therefore, if a pulse signal is now applied to each of the electromagnets 15 and 16 based on a pattern forming signal from an electronic control unit (not shown) into which the knitting program of the circular knitting machine is previously input, the result as shown in FIG. As shown in FIG. 2, the end faces of the cores 15b, 16b of the electromagnets 15, 16 have one attracting piece 20a and the other attracting piece 20 made of magnetic material, as described above.
b are alternately sucked, so this operating lever 19 swings around the support shaft 18. Then, the select finger 21 of the operating lever 19 is connected to the jack 3.
By selectively pushing each button 3a,
Slide knitting needles (not shown) up and down, thereby
Patterns are now being added to stockinette knitting.

In particular, the iron core (S pole) 1 of the one electromagnet 15
5b and the attracting piece 20a (N pole) attract each other, and at this time, the lines of magnetic force form a closed loop in the direction of the arrow in FIG. 1, and there is no magnetic leakage to the electromagnetic coil 16a of the other electromagnet 16. , there is no fear of magnetic interference, and even if oil adheres to the surface of each iron core when the current is turned off, the adsorption pieces 20a, 20
When b is attracted to the iron cores 15b, 16b, the spheres 24a, 24b are slightly exposed and buried in the end faces of the iron cores 15b, 16b, so that the influence of oil adhesion can be prevented, and residual magnetism can be prevented. By eliminating the generation, vibration and noise accompanying the operation of each electromagnet 15 and 16 can be reduced.

[Effect of idea]

As described above, according to the present invention, a number of jacks 3 for moving the knitting needles up and down are slidably fitted around the outer periphery of the knitting machine cylinder 1, and each jack 3 is selectively pushed. In the circular knitting machine, a support frame 13 is provided on a substrate near the knitting machine cylinder 1, and each metal member 14a, 14b is independently provided on a back plate that is integrated with this support frame 13. A pair of upper and lower electromagnets 1 are installed at 14a and 14b.
5 and 16 are arranged side by side, and each of the metal members 14
When the magnetic frames 17a, 17b, which are formed to surround approximately semi-circumferences of the electromagnets 15, 16, are energized, the magnetic fields are provided so as to form a closed loop. A support shaft 18 is mounted on the support frame 13 on the side, an operating lever 19 is pivotally attached to the supporting shaft 18, and independent adsorption pieces 20a and 20b are attached to one end of the operating lever 19 to attach each of the electromagnets 15. , 16 iron cores 15b, 16b, each sphere is embedded in each end face of each of the iron cores which are in contact with each suction piece, and a select finger is attached to the free end of the operating lever. Since the butts of the electromagnets 15 and 16 are attached so as to be selectively pushed, when each of the electromagnets 15 and 16 is energized, the magnetic field forms a closed loop independently, and the magnetic force can be strengthened. , when de-energizing, each adsorption piece 20a, 20b is attached to each iron core 15b, 1
It becomes easier to separate from each end face of the electromagnet 6b, the generation of residual magnetism can be eliminated, and the vibration and noise accompanying the operation of each electromagnet 15, 16 can be reduced.Furthermore, it is possible to prevent magnetic interference with each electromagnet 15, 16. It is possible to prevent the above adsorption parts 20a and 20b from
Since the end faces of the electromagnets 15 and 16b come into contact with each other as if closing a fan, the suction force is increased and the patterning operation of stockinette knitting can be made quieter. Since the height can be lowered, the entire device can be constructed in a smaller size, and each sphere formed of a steel ball is buried slightly exposed on each end face of each core. This has excellent effects such as being able to remove residual magnetism and reducing vibration and noise associated with the operation of each electromagnet.

[Brief explanation of the drawing]

FIG. 1 is a vertical view of the electromagnetic needle selection device for knitting machines of the present invention, FIG. 2 is a cross-sectional view of the same, FIG. Figure 4 is a perspective view of the electromagnetic needle selection device for knitting machines of the present invention, Figure 5 is a plan view of the already proposed electromagnetic needle selection device for knitting machines, and Figure 6 is a partially cutaway view. 7 and 8 are views for explaining the operation of the electromagnetic needle selection device for knitting machines that has already been proposed, and FIG.
It is a slope view same as the above. DESCRIPTION OF SYMBOLS 1... Knitting machine cylinder, 2... Vertical groove, 3... Jack, 11... Support frame, 14a, 14b... Metal member, 15, 16... Electromagnet, 17a, 17b... Electromagnetic frame, 19... Operating lever, 20a, 20b ...Adsorption piece, 21...Select finger, 22a, 22b...
Separation members, 24a, 24b... spheres.

Claims (1)

[Scope of utility model registration request] In a circular knitting machine, a number of jacks for moving knitting needles up and down are slidably fitted around the outer periphery of a knitting machine cylinder, and each jack is selectively pushed.
A support frame is provided on a substrate near the knitting machine cylinder, each metal member is independently provided on a back plate that is integrated with the support frame, and a pair of upper and lower electromagnets are arranged side by side on each metal member, Each of the metal members is provided with a magnetic frame formed to surround approximately a semicircumference of each electromagnet so as to form a closed loop of magnetic field when energized. A support shaft is mounted, an operating lever is pivotally attached to the supporting shaft, and independent adsorption pieces are provided at one end of the operation lever so as to be able to adsorb to each iron core of each of the electromagnets. Each sphere is embedded in each end face of each of the iron cores that come into contact with each other, a select finger is attached to the free end of the operating lever so as to selectively push the butt of the jack, and the balls are embedded with steel balls. An electromagnetic needle selection device for a knitting machine, characterized in that the electromagnetic needle selection device for a knitting machine is formed so as to be slightly exposed from the end face of each of the iron cores.