JPH07119006A - Needle selector in knitting machine - Google Patents

Abstract

PURPOSE:To provide the subject needle selector capable of improving its knitting needle sorting performance by gliding knitting needle butts in a stable state to a sorting section irrespective of change in the conditions such as needle butt dimension and the variation in butt guide channel width. CONSTITUTION:Knitting needle butts 50 are aligned by a butt guide member through carriage travel and then attractively guided to the guide section 51a of a needle selecting piece 51 magnetized, in advance, by a permanent magnet 54 for guiding purpose; and when the butts are guided to the sorting section 51b of the needle selecting piece, if an electromagnet 30 is activated, the butts are adsorbed to the sorting section by the magnetic force of the electromagnet and then attractively guided to the holding section 51c of the needle selecting piece magnetized, in advance, by a permanent magnet 52 for holding purpose and thus sorted to one position; in contrast, if the electromagnet is deactivated, the butts stay at a position of its contact with the sorting section and sorted to the other position without being attracted to the holding section.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a needle selecting device of a knitting machine for selecting knitting needles by controlling an electromagnet by an electric signal for needle selection according to a knitting pattern.

[0002]

2. Description of the Related Art Conventionally, a needle selecting section is provided with an electromagnet and a permanent magnet, and when the carriage is running, the electromagnet is selectively excited and controlled to sort the knitting needle backward, and the demagnetization control is performed to knit the needle. There is a needle selection device adapted to select the front.

FIG. 5 shows a conventional needle selecting device, which is arranged on the lower surface of the carriage 4 (see FIG. 1). In the passage of the bat 50 which is a part of the knitting needle 3,
A bat guide member 156 for guiding sliding of the bat 50,
A needle selection strip 151 for selecting the bat 50 back and forth, and a butt pressing member 15 for pressing the bat 50 against the needle selection strip 151.
5 and are installed. Needle strip 151 has a small hole 151e
Is divided into two parts, a sorting part 151b and a holding part 151c, and the sorting part 151b has an electromagnet 130.
However, the permanent magnets 152 are arranged correspondingly to the holding portions 151c. The butt pressing member 155 is arranged between the two butt guide members 156 and in front of the needle selection strip 151. Also, the bat pressing member 155
Is attached so that the width of the butt guide passage can be adjusted in order to bring the butt 50 into contact with the needle selection strip 151. further,
The butt pressing member 155 is provided with a spring structure portion 155a in order to suppress variation in the front-back dimension of the bat 50. On the downstream side of the needle selection device, the bats 50 sorted before and after are selected.
Bat selection members 157 are arranged to guide the to the respective passages.

In the needle selecting device having the above construction, the carriage 4
When the bat 50 is moved, the bat 50 is pressed by the butt pressing member 155 against the selecting portion 151b of the needle selection strip 151. On the other hand, when a current flows through the electromagnet 130 due to the needle selection signal output as the carriage 4 travels, the bat 50 moves to the electromagnet 1
The magnetic force of 30 causes the needle selection strip 151 to be adsorbed to the selection unit 151b. Further, when the carriage 4 is run, the bat 50 is adsorbed by the sorting unit 151b and the sorting unit 151b.
It moves to the holding part 151c along with. Needle strip 1
A permanent magnet 152 is arranged in the holding portion 151c of the butt 51, and the magnetic force causes the bat 50 to move the needle selection strip 1
While being attracted to the holding portion 151c of 51, it is slid and moved rearward to be sorted. Further, when no current flows through the electromagnet 130, no magnetic force is generated in the sorting portion 151b of the needle selection strip 151, so that the bat 50 is sorted forward without moving backward. Then, the bats 50 sorted forward and backward in this way are guided to the respective passages by the bat sorting member 157.

[0005]

However, according to the conventional needle selecting device as described above, the butt pressing member 155 is arranged so that the butt 50 can be surely pressed against the selecting portion 151b of the needle selecting strip 151. However, since the spring structure 155a must be provided,
Assembly and manufacturing were difficult and costly.
Furthermore, when attaching the butt pressing member 155,
The front and rear dimensions with respect to the needle selection strip 151 must be accurately attached, and it took time to assemble. Also,
When used for a long period of time, there is a problem that the spring structure portion 155a of the butt pressing member 155 does not work effectively.

The present invention has been made in order to solve the above-mentioned problems, and simplifies the structure of the needle selection device, reduces the cost by eliminating the adjustment at the time of assembling, and is intended for long-term use. Another object of the present invention is to provide a needle selecting device of a knitting machine, which is stable and guides the butt of the knitting needle to the selecting portion of the needle selecting strip to surely select the needle.

[0007]

In order to achieve this object, the needle selecting device of the knitting machine of the present invention is provided with a butt guide member for aligning the butt of the knitting needle, and the butt guide member following the butt guide member. The needle selecting strip and the selecting portion of the needle selecting strip near the butt guide member, and selectively select the selecting portion based on the needle selecting electric signal according to the knitting pattern. An electromagnet for magnetizing the butt of the knitting needle to the selection section and a holding section which is provided corresponding to the holding section following the selection section of the needle selection strip, and the holding section is always magnetized. In a needle selecting device of a knitting machine provided with a magnet, a guide part extending from the selecting part to the butt guide member side between the butt guide member and the selecting part of the needle selecting strip, and its guide. With a permanent magnet for guiding that always magnetizes the part

[0008]

According to the needle selecting device of the knitting machine of the present invention having the above-mentioned structure, the butt of the knitting needle is first aligned by the butt guide member by the running of the carriage, and is guided to the tip of the guide portion of the needle selecting strip. It abuts and is attracted by the magnetic force of the guide permanent magnet provided in the guide portion. Further, when the carriage is run, the bat is reliably guided to the needle selection strip selection section along the guide section. Then, when the electromagnet provided in the sorting section is excited, the butt is attracted to the sorting section by the magnetic force of the electromagnet, and is guided by suction along the butt. It is attracted by the magnetic force of the holding permanent magnet provided in the holding portion, and along this, it is surely guided and sorted to one of the front and back. On the other hand, when the electromagnet is demagnetized, the butt stays in a position in contact with the sorting unit, and when the carriage is run, the bat separates from the needle selection strip and is sorted into the other of the front and rear. It

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view of a hand knitting machine equipped with the needle selection device of this embodiment. The knitting machine body 1 has a long box shape on the left and right,
On the needle bed 2 attached to this, knitting needles 3 are arranged at equal intervals. The carriage 4 arranged on the needle bed 2 so as to be slidable from side to side has a rear leg 5 (see FIG. 2) provided behind it.
Slides in a state of being fitted to a rail portion 6 formed at the rear of the needle bed 2. The control box 9 is connected to the carriage 4 by a signal cable.

FIG. 2 is a partially cutaway perspective view of the carriage 4 as seen from the rear. A slit plate 10 is arranged behind the needle bed 2. The slit plate 10 has apertures 12 and light-shielding portions 13 at the same intervals as the arrangement intervals of the knitting needles 3. Behind the carriage 4, a timing sensor 11 for detecting the movement of the carriage 4 and a direction sensor 14 are arranged. The timing sensor 11 and the direction sensor 14 can read the aperture 12 and the light shield 13 of the slit plate 10 when the rear leg 5 of the carriage 4 is fitted with the rail 6 of the needle bed 2. Therefore, the moving direction of the carriage 4 and the timing for controlling the electromagnet 30 (see FIG. 3) are detected.

FIG. 3 is a block diagram showing the electrical construction of this embodiment. The carriage 4 includes an electromagnet 30 for selecting the knitting needle 3 forward and backward, and an electromagnet driving transistor 34 for controlling the excitation and demagnetization of the electromagnet 30.
Direction sensor 1 for detecting the moving direction of the carriage 4.
4 and a timing sensor 11 for generating a timing signal for controlling the electromagnet driving transistor 34 in accordance with the movement of the carriage 4. The control box 9 has a memory 32 storing knitting patterns.
And a read-out circuit 33 for reading out needle selection information at that position based on the traveling position of the carriage 4.

The read-out circuit 33 includes a direction sensor 1
The travel position of the carriage 4 is calculated from the signal output from the memory 4, and the needle selection information at the travel position is read from the memory 32. Further, the reading circuit 33 outputs the needle selection information read from the memory 32 to the electromagnet driving transistor 34 based on the timing signal output from the timing sensor 11. When the output signal drives the electromagnet driving transistor 34, the electromagnet 3
Current flows to 0. Then, the electromagnet 30 generates a magnetic force to attract the bat 50, which is a part of the knitting needle 3. When the electromagnet driving transistor 34 is not driven, no current flows in the electromagnet 30. Therefore, the electromagnet 30 does not generate a magnetic force and thus does not attract the bat 50.

FIG. 4 shows the needle selection device of this embodiment.
In the passage of the bat 50, a butt guide member 56 that guides the sliding movement of the bat 50 and a needle selection strip 51 that sorts the bat 50 back and forth are installed. Needle strip 51 is a small hole 51
The guide part 51a, the sorting part 51b, and the holding part 51c are divided into three parts by d and 51e.
The guide permanent magnet 54 is arranged in a, the electromagnet 30 is arranged in the selecting part 51b, and the holding permanent magnet 52 is arranged in the holding part 51c. The permanent magnets 52 and 54 and the electromagnet 30 are arranged at positions on the back surface side in FIG. 4 that do not obstruct the passage of the bat 50. The needle selection strip 51 is
It is made of a material that is magnetized by an external magnetic force and has less residual magnetism, for example, electromagnetic soft iron.

In the needle selecting device of this embodiment, when a current is applied to the electromagnet 30, a magnetic force is generated in the electromagnet 30 and the bat 50 is attracted to the sorting section 51b. Further, when no current is passed through the electromagnet 30, no magnetic force is generated in the electromagnet 30, so that the bat 50 is not adsorbed by the selection unit 51b. In this manner, the bat 50 is selected. Therefore, when the needle selection strip 51 is magnetized by applying a magnetic force from the outside, such as iron, if a material having a magnetic force remaining due to the residual magnetism even if the magnetic force from the outside is removed is used, a current is applied to the electromagnet 30. Even when the bat 50 is not present, the magnetic force due to the residual magnetism remains in the sorting unit 51b, and the bat 50 cannot be sorted accurately. The small holes 51d and 51e provided in the needle selection strip 51 reduce the area through which the magnetic flux passes and suppress the influence of the magnetic forces of the guide portion 51a, the sorting portion 51b, and the holding portion 51c on other portions. belongs to.

Further, as described above, since the guide portion 51a of the needle selection strip 51 fulfills the same function as the butt guide member 56, the butt guide member 56 on the same side as the needle selection strip 51 is the same as in the prior art. Butt guide member 15 of the needle selecting device described above
It is shorter than 6. Further, in the needle selecting device described in the prior art, the member for guiding the bat 50 on the front side of the needle selecting strip 151 is the two fixed bat guide members 156 and the bat pressing member that is adjustably attached. And 155. However, in the present embodiment, the number of the butt guide member 56 is one, and the bat 50 is fixed at a position where the butt 50 is sandwiched between the needle selection strip 51 and the butt guide member 56 and does not become difficult to move.

The butt guide member 56 is provided so that the sliding range of the bat 50 does not deviate, and is made of, for example, synthetic resin. Therefore, the number of parts for guiding the bat 50 is reduced, and further, since the spring structure portion 155a of the bat pressing member 155 is not necessary, the material selection range is widened and the cost can be kept low. In addition, the number of parts is small and the adjustment is not necessary at the time of assembling, so that the assembling time can be shortened. At the downstream side of the needle selection device, a bat sorting member 5 that guides the bats 50 sorted back and forth to each passage.
7 are arranged.

The present embodiment is constructed as described above.

The operation of the needle selection device of this embodiment will be described below.

When the carriage 4 runs, the butt guide member 5
The bat 50, which is a part of the knitting needle 3 guided from 6, is attracted to the guide portion 51a by the magnetic force of the guide permanent magnet 54 installed in the guide portion 51a of the needle selection strip 51. further,
When the carriage 4 is run, the bat 50 moves to the guide portion 51a.
While being adsorbed by the sheet, it moves along the guide portion 51a and is surely guided to the sorting portion 51b. On the other hand, the needle selection information at the traveling position of the carriage 4 detected by the direction sensor 14 arranged on the carriage 4 is output to the electromagnet driving transistor 34 in synchronization with the timing signal of the timing sensor 11. When the electromagnet 30 is excited by this output signal, the bat 50 moves the sorting unit 5 by the magnetic force of the electromagnet 30.
While being adsorbed by 1b, it is drawn backward along the sorting section 51b. Then, the needle selection strip 51 is surely sorted rearward via the holding portion 51c.

When the electromagnet 30 is demagnetized, the bat 50 does not generate magnetic force in the electromagnet 30 and therefore the sorting unit 5
When the carriage stays in a position where it abuts on 1b and the carriage travels further, the bat 50 is separated from the needle selection strip 51 and is guided to the front passage without moving backward. In this way, the bats 50 sorted forward and backward have the bat sorting members 57.
Will guide you to each passage. Each stitch is knitted by the knitting needles 3 thus selected.

The present invention is not limited to the embodiments described in detail above, and modifications can be made without departing from the spirit of the invention.

For example, in the above embodiment, the needle selection strip 5
Although the guide permanent magnet 54 is used for the guide portion 51a of No. 1,
This is for the purpose of adsorbing the bat 50 to the guide portion 51a and moving it to the sorting portion 54b along the guide portion 51a, so an electromagnet may be used instead of this.

[0024]

As is apparent from the above description, according to the needle selecting device of the knitting machine of the present invention, in particular, between the butt guide member and the selecting portion of the needle selecting strip, the above selecting portion is used. Since the guide portion extended to the butt guide member side and the guide permanent magnet that magnetizes the guide portion at all times are provided, the dimensional variation of the knitting needle bat, the passage width for guiding the knitting needle bat, etc. It is possible to reliably guide the knitting needle butt to the selection section of the needle selection strip without being restricted, and it is possible to simplify the needle selection device to reduce the cost and eliminate the assembly adjustment of the needle selection device. It is possible.

[Brief description of drawings]

FIG. 1 is a perspective view of a knitting machine according to an embodiment of the present invention.

FIG. 2 is a partially cutaway perspective view of a knitting machine showing a mounting arrangement state of a slit plate, a sensor and the like.

FIG. 3 is a block diagram showing electrical characteristics of the present invention.

FIG. 4 is a plan view showing a needle selection mechanism according to an embodiment of the present invention.

FIG. 5 is a plan view showing a conventional needle selection mechanism.

[Explanation of symbols]

 3 Knitting needle 4 Carriage 30 Electromagnet 50 Butt 51 Needle strip 51a Guide part 51b Sorting part 51c Holding part 52 Holding permanent magnet 54 Guide permanent magnet

Claims (1)

[Claims] 1. A butt guide member for aligning bats of knitting needles, a needle selection strip provided subsequent to the butt guide member, and a selection section of the needle selection strip near the butt guide member. And an electromagnet for selectively magnetizing the sorting section based on an electric signal for needle selection according to a knitting pattern to attract the butt of the knitting needle to the sorting section, and the needle selection strip. In a needle selecting device of a knitting machine, which is provided corresponding to a holding part following the selecting part, and which has a holding permanent magnet that always magnetizes the holding part, the butt guide member and the needle selecting strip. Of the knitting machine, the guide part extending from the selection part to the butt guide member side, and the guide permanent magnet that constantly magnetizes the guide part. Needle selection device.