JPH0318543Y2 - - Google Patents

Description

[Detailed description of the invention] Technical field This invention relates to a needle selection control device for a knitting machine.

Prior Art Conventionally, for example, a needle selection device installed in a knitting carriage, which sorts knitting needles into a knitting preparation position and a needle selection position ahead of the knitting preparation position, has an electromagnet installed at a predetermined location through which the butt of the knitting needle passes. When this electromagnet is energized, it attracts the butt of the knitting needle and guides it to the needle selection position, and on the other hand, when the electromagnet is not energized,
Some knitting needles were guided to the knitting preparation position without suctioning the butts of the knitting needles, and the knitting needles were sorted.

However, since this needle selection device is designed to select knitting needles one by one based on the energization and de-excitation of the one electromagnet, when the knitting carriage is slid at a high speed, That is, when the butt of each knitting needle passes through an electromagnet at a high speed, the butt of a predetermined knitting needle is attracted or not attracted within a short time by the energizing or de-energizing operation of this one electromagnet, and each knitting needle is There was a limit to reliable sorting due to the function of the electromagnet and the state in which the electromagnet was installed.

Therefore, it has been impossible to slide the knitting carriage quickly in order to increase the knitting speed, and it has been impossible to improve the efficiency of the knitting work.

Purpose The purpose of this invention is to solve the above-mentioned problems, without increasing the size of the knitting machine, by dividing the selection of knitting needles into multiple selection members, and by allowing the knitting carriage to slide at a high speed. It is an object of the present invention to provide a needle selection control device for a knitting machine that can accurately and reliably select predetermined knitting needles and improve knitting work efficiency.

Embodiment Hereinafter, the configuration of a knitting machine embodying this invention will be explained with reference to the drawings.

In FIG. 1, a needle bed 1 extending in the longitudinal direction of the knitting machine body has a large number (200 in this embodiment) of needle grooves 2 formed at equal intervals over its entire longitudinal length. As shown in FIG. 2a and b, the needle bed 1 has butts 3 as projections of different heights.
Knitting needles 3 and 4 having needles a and 4a are arranged in an alternating row, and butts 3a and 4a of each knitting needle 3 and 4 are movable in the front-rear direction along the needle groove 2. In this embodiment, the knitting needles 3 having the high butt 3a are numbered 1, counting from the left side in FIG.
Odd numbered needle grooves 2, such as 3rd, 3rd, 5th, etc.
The knitting needles 4 having the low butts 4a are arranged so as to correspond to the even numbered needle grooves 2 such as the second, fourth, and sixth needle grooves. Therefore, among the 200 knitting needles 3 and 4 from the 1st to the 200th knitting needles (hereinafter referred to as numbered knitting needles) counting from the left, the odd numbered knitting needles 3 have the higher butts 3a, and the even numbered knitting needles Knitting needle 4 with low butt 4a
are arranged.

The detection plate 5 is disposed on the rear side of the needle bed 1 along the longitudinal direction of the knitting machine body, and on its upper surface is arranged at twice the arrangement interval of the 200 knitting needles 3 and 4 arranged at equal intervals. A large number of slits 6 correspond to the intervals of
are cut out at equal intervals.

The left reference sensor 7 is composed of a magnetic sensing element such as a Hall element, and is mounted on the knitting machine main body at the rear of the upper part of the detection plate 5 so as to correspond to the arrangement position of the first knitting needle 3. It is worn. The sensor 8 for the right side reference is also composed of a magnetic sensing element such as a Hall element, and is mounted on the knitting machine main body at the upper rear side of the detection plate 5 so as to correspond to the arrangement position of the knitting needle 3 No. 199. It is attached.

The organizing carriage (hereinafter referred to as the carriage) 9 is
It is a backward needle selection type carriage, which is mounted so as to be able to slide left and right along a rail section (not shown) on the needle bed 1, and is used for knitting pattern knits such as two-color simultaneous knitting and tack knitting. The cam arrangement can be selected, and the needle selection mechanism can be switched to plain knitting, pattern knitting, one-point pattern knitting, etc.

Next, a cam mechanism arranged symmetrically on the lower surface of the carriage 9 will be explained based on FIG. 3.

The front cam body 10 is horizontally installed near the front of the lower surface of the base plate 11 of the carriage 9, and a front rest butt passage is formed in the front side of the front cam body 10. The rear cam body 12 is similarly placed laterally on the rear side of the lower surface of the base plate 11, and a rear rest butt passage is formed on the rear side thereof. The pair of left and right organizing main cams 13 are connected to the front and rear cam bodies 10,
A switching cam 14 that can be switched between two positions is provided at the rear end.

The first guide cam 15 is provided outside the pair of left and right switching cams 14, and between the guide cam 15 and the rear cam body 12 are the butts 3a, 4a of the knitting needles 3, 4 that have finished knitting. A passage R1 is formed for guiding the material outward. On the outer cam surface of each guide cam 15, an adsorption portion 19b of an iron core 19 constituting a first sorting member 17, which will be described later, is arranged. Now, only needles are selected.

The second guide cam 16 is the first guide cam 15.
The first cam surface 16a and the second cam surface 16b are provided on the outside of the base plate 11, respectively, and the first cam surface 16a and the second cam surface 16b are formed at a position lower than the second cam surface 16b when viewed from the lower surface of the base plate 11. The high butt 3a of the knitting needle 3 can engage with the first cam surface 16a, and the low butt 4a of the knitting needle 4 can engage with the second cam surface 16b. Therefore, only the knitting needles 4 having the low butt 4a are guided into the passage R2 in the second guide cam 16. Further, on the outer cam surface of the second guiding cam 16, an iron core suction part 23 constituting a second sorting member 18, which will be described later, is arranged, and the knitting needle 4 having the low butt 4a is
It is becoming more and more important to select needles.

Next, the first and second sorting members 17 and 18 will be explained. In addition, in this embodiment, both sorting members 1
7 and 18 are different only in the attachment point of the carriage 9 and the upper and lower height positions, but have completely the same configuration, so for convenience of explanation, the first sorting member 17 will be explained.

In FIG. 4, the first sorting member 17 is the core 1
9, a needle selection solenoid 20 wound around the iron core 19, a permanent magnet 21 installed between both ends of the iron core 19, and an auxiliary magnetic pole piece 22 formed extending from one side of the iron core 19, Adsorption part 1 of the iron core 19
9b has a notch 19a and is disposed on the outer cam surface of the first induction cam 15, as shown in FIG.
The suction part 19 is attached to the lower surface of the base plate 11 so that the tip of the high butt 3a of the knitting needle 3 passing through the needle 1 slightly touches the bottom surface of the base plate 11.
b. Then, by energizing the needle selection solenoid 20, the iron core 1
The magnetic poles generated in the attracting portion 19b of 9 and the auxiliary magnetic pole piece 22 are made to be the same as the magnetic poles generated in the attracting portion 19b and the auxiliary magnetic pole piece 22 by the permanent magnet 21.

Then, when the high butt 3a of the knitting needle 3 is guided to the tip position of the suction part 19b, when the needle selection solenoid 20 is energized, the butt 3a is configured by the energization of the needle selection solenoid 20. Due to the magnetic circuit, the attracting portion 19b and the magnetic pole piece 22
They are picked up between the two and sorted forward along the suction section 19b. Then, the butt 3a is connected to the suction portion 19.
When the knitting needle 3 is attracted to the rear end position of the suction part 19b beyond the notch 19a of the knitting needle 19a (in this state, the high butt 3a of the next knitting needle 3 is guided to the tip position of the suction part 19b), Even if the needle solenoid 20 is demagnetized, the butt 3a is further attracted to the attraction part 19 by the magnetic circuit constituted by the permanent magnet 21.
guided forward along b. Note that while the high butt 3a of these two knitting needles 3 passes, the low butt 4a of one of the knitting needles 4 passes through while the needle selection solenoid 20 is energized. It is not attracted between the portion 19b and the auxiliary pole piece 22, but is guided laterally as it is and is sorted by a second sorting member 18, which will be described later.

Further, the high butt 3a of the knitting needle 3 is
If the knitting needle solenoid 20 is not energized at the time when the butt 3a is guided to the tip position of the needle 9b, the butt 3a will not be attracted and will be guided in the lateral direction, and will then move to the rear of the second guiding cam 16. It engages with the side first cam surface 16a and is guided rearward.

Accordingly, the high butt 3a of the knitting needle 3 is selected into either the front butt passage R3 or the rear butt passage R4 shown by the dashed line in FIG. 3 by energizing or de-energizing the needle selection solenoid 20.

On the other hand, the second sorting member 18 is also configured to be exactly the same as the first sorting member 17, differing only in the vertical height position, and its suction portion 23 is placed on the outer cam surface of the second guiding cam 16. Along with being placed,
The auxiliary magnetic pole piece 24 is arranged along the suction portion 23 so as to slightly touch the tip of the low butt 4a of the knitting needle 4 passing through the passage R2. Then, by energizing and de-energizing the needle selection solenoid 25 of the second selection member 18, the first selection member 17
Similarly, the low butt 4a of the knitting needle 4 is selected to either the front butt passage R3 or the rear butt passage R4 shown by the dashed line in FIG.

Note that the first sorting member 17 and the second sorting member 1
In this embodiment, when the high butt 3a of the odd-numbered knitting needle 3 is located at the tip of the suction part 19b of the first sorting member 17, the distance D1 from the knitting needle 8 Low butt 4a of even numbered knitting needles 4
is set to correspond to the tip of the suction part 23 of the second sorting member 18, that is, the knitting needle interval is 9 pitches. Further, in this embodiment, the distance D2 between the pair of left and right first sorting members 17 is set to be a knitting needle distance of 40 pitches.

The reference signal generator 26 is attached to the rear side of the central part of the carriage 9 as shown in FIGS. 1 and 3,
It is composed of permanent magnets. Then, when the carriage 9 is slid in the left and right direction on the needle bed 1 and the reference signal generator 26 passes in front of the left and right reference sensors 7 and 8, each of the sensors 7,
8 to output reference signals SG3 and SG6 shown in FIG.

First and second timing pulse generators 27, 2
8 are attached to the rear left side of the carriage 9 as shown in FIG. 1, each of which includes a photointerrupter, etc., and detects the passage of the detection plate 5 through the slit 6. This first and second timing pulse generator 2
The interval between the slits 7 and 28 is half the width of the slits 6 formed at equal intervals on the detection plate 5 (quarter pitch). Then, set the carriage 9 to the first position.
When the first timing pulse generator 27 is slid from the left side to the right side in the figure, as shown in FIG. 7, and on the contrary, when it is slid from the right side to the left side, as shown in FIG. The second timing pulse generator 28 outputs a video signal SG1 every time the passage of the slit 6 is detected, and a video signal SG2 every time the second timing pulse generator 28 detects the passage of the slit 6.
Therefore, the two video signals SG1 and SG2 are always out of phase by a constant interval (π/2) with respect to one of them because the timing pulse generators 27 and 28 are installed at a quarter-pitch interval. This will be the output waveform.

Next, an electric control circuit built into the knitting machine configured as described above will be explained.

In FIG. 6, the central processing unit 31 receives video signals SG1, SG2 from the first and second timing pulse generators 27, 28 and reference signals SG3, SG from the left and right reference sensors 7, 8.
Enter 6. Based on these two video signals SG1 and SG2, the central processing unit 31 determines that the video signal SG1 has a zero potential (hereinafter referred to as L level).
When the video signal SG2 is at a positive potential (hereinafter referred to as H level) from If the level is L, it is calculated that the carriage 9 is being slid from the right side to the left side. In addition, by inputting the reference signals SG3 and SG6, the central processing unit 31 causes the center position of the carriage 9 to pass the left reference sensor 7 from the left side to the right side (the first knitting needle 3 is moved to the right side). The needle 3 passes through the right side reference sensor 8 from the right side to the left side (passes the 199th knitting needle 3 in the left direction).

The two counters, the first and second counters 32 and 33, are connected to the first and second sorting members 17 and 18.
Butt 3 passing through the suction parts 19b and 23 of
What number of knitting needles 3 and 4 are knitting needles 3 and 4 equipped with a and 4a?
Count 4. The first counter 32 receives the count contents based on the left reference signal outputted from the central processing unit 31 based on the fact that the center position of the carriage 9 passes the first knitting needle 3 from the left side to the right side. is set to "-19 (=1-20)" and the carriage 9 is slid to the right, the central processing unit responds each time the video signal SG1 rises to the H level. 3
The count contents are incremented by 2 based on the addition signal output from 1. Further, the first counter 32 is activated by the right reference signal outputted from the central processing unit 31 based on the fact that the center position of the carriage 9 has passed the 199th knitting needle 3 from the right side to the left side. The content is “219 (=199
+20)" and the carriage 9 is slid to the left, the video signal SG is
The count contents are subtracted by "2" based on a subtraction signal outputted from the central processing unit 31 in response to each falling of "1" to the L level.

On the other hand, the second counter 33 has its count content set to "-28 (=-19-9)" by the left reference signal output from the central processing unit 31, and also counts based on the addition signal. Add the contents by "2". Further, the second counter 33 changes its count content to "228" according to the right reference signal outputted from the central processing unit 31.
(=219+9)", and the count contents are subtracted by "2" based on the subtraction signal.

Therefore, from the time when the left reference signal is output, the carriage 9 is slid in the right direction, and the central processing unit 3
1 detects the rising edge of 10 video signals SG1, the count content of the first counter 32 becomes "1" (at this point, the count content of the second counter 33 is "-8"), and the count content of the first counter 32 becomes "1". It can be seen that the high butt 3a of the knitting needle 3 is located at the tip of the suction part 19b of the first sorting member 17 on the left side of the carriage 9 in FIG. Further, when the central processing unit 31 detects the rising edge of five video signals SG1 by sliding further to the right from this point, the count content of the second counter 33 becomes "2", and the second knitting needle The lower butt 4a of 4 is located on the left side of the carriage 9 in FIG.
8 is located at the tip of the suction part 23, and the count content of the first counter 32 is "11".
(=1+5×2)", and it can be seen that the high butt 3a of the 11th knitting needle 3 is located at the tip of the suction part 19b of the first sorting member 17.

Conversely, when the carriage 9 is slid to the left from the moment when the right reference signal is output, and the fall of the 10 video signals SG1 is detected, the first counter 3
The count content of No. 2 is "199 (=219-10×2)" (at this point, the count content of the second counter 33 is "208"), and the high butt 3a of knitting needle 3 of No. 199
is located at the tip of the suction portion 19b of the first sorting member 17 on the right side of the carriage 9 in FIG. Also, from this point on, the central processing unit 31 slides further to the left, and the central processing unit 31 outputs the four video signals.
When the falling edge of SG1 is detected, the second counter 33
The count content is "200 (=208-4×2)", and the low butt 4a of the knitting needle 4 of number 200 is the tip of the suction part 23 of the second needle selection member 18 on the right side of the carriage 9 in FIG. It can be seen that the number 191 is located at the tip of the suction part of the first sorting member 17, and the count content of the first counter 32 is "191 (=199-4×2)". It can be seen that the high butt 3a of the knitting needle 3 is located.

The needle selection data memory 34 stores needle selection data for sorting the knitting needles 3 and 4 into a knitting preparation position and a needle selection position in front of the knitting preparation position for forming stitches in each knitting row in two-color simultaneous knitting, for example. remembered. Then, the central processing unit 31 stores the needle selection data memory 34 based on the reference signals from the left and right reference sensors 7 and 8 and the count contents of the first and second counters 32 and 33. The needle selection data of each knitting needle 3, 4 in each knitting stage is sequentially read out, and based on the data, the needle selection solenoid 20 of the first and second selection members 17, 18,
Drive control signals SG4 and SG5 that control excitation of 25
is output until the count contents of the first and second counters 32 and 33 change and the next data is read out. Therefore, the drive control signal SG for exciting the needle selection solenoids 20 and 25
4.The time when SG5 is output is 3a,
It takes a long time for the suction parts 4a to be guided from the tip to the rear end of each suction part 19b, 23.

In addition, since the carriage 9 of this embodiment is a rear needle selection type carriage, when the carriage 9 is sliding to the right, the first and second selection members on the left side of the carriage 9 in FIG. When the needle selection solenoids 20 and 25 of 17 and 18 are slid to the left, the first and second selection members 17 and 18 on the right side of the carriage 9 in FIG. The drive control signals SG4 and SG5 are controlled by the central processing unit 31 so that the drive control signals SG4 and SG5 are output to the needle selection solenoids 20 and 25.

In this way, in this example, a high
Knitting needles 3 and 4 having a lower butt 4a are arranged in an alternating row, and the higher butt 3a is connected to the first sorting member 1.
In step 7, since the low butts 4a are sorted by the second sorting member 18, each of the butts 3a, 4a is absorbed by the first or second sorting member 17, 18 during the time involved in sorting. However, the distance that the needle is guided forward is twice as long as that of the conventional needle selection device. Therefore, the time involved in sorting each vat 3a, 4a becomes longer, and even if the carriage 9 is slid at a high speed, the sorting can be done accurately and reliably, which improves the efficiency of the knitting work. can.

In addition, in this embodiment, a height difference is provided at the butt of the knitting needle, and the height difference is used to select the needle, so there is no need to newly add a separate member to the knitting needle for needle selection. For example, there is no need to increase the length of the needle bed in the front-rear direction, and the knitting machine can be implemented without increasing the size of the entire knitting machine.

Next, the second embodiment of this invention is shown in Figures 9 to 1.
This will be explained according to FIG.

In this second embodiment, the distance D1 between the first sorting member 17 and the second sorting member 18 is changed. That is, as shown in FIG. 9, the second sorting member 18 is arranged one pitch further outward from the first sorting member 17, and the knitting needle 3 is attached to the tip of the suction part 19b of the first sorting member 17. When the high butt 3a is located, 10 is counted from the knitting needle 3.
The butt 3a of the previous knitting needle 3 is the second sorting member 18
Both sorting members 17,
18 intervals D1 are set.

On the other hand, the second counter 33 is set to "-29 (=-19-10)" by the left reference signal and "229 (=-19-10)" by the right reference signal.
(=219+10)" and the count contents are set respectively. And the second counter 3
3 is based on the fall of the video signal SG1 output when the carriage 9 is sliding in the right direction.
The count contents are incremented by "2" by the addition signal from the central processing unit 31, and when the carriage 9 is sliding to the left, the video signal SG1 is output.
Based on the rising edge of , the count contents are subtracted by "2" by a subtraction signal from the central processing unit 31, and "1" is applied only when the first addition or subtraction signal is input at the set point. This is exactly the same as the first embodiment except for the subtraction.

As a result, the first and second sorting members 17,
Drive signal SG3 for selecting predetermined knitting needles 3 and 4 output to 18 needle selection solenoids 20 and 25;
The output timing of SG4 is that carriage 9 is knitting needle 3,
As in the first embodiment, the first sorting member 17 and the second sorting member 18 have a higher butt 3a and a lower butt 4a, respectively. and can be reliably selected.

Further, in this embodiment, the distance D1 between the first sorting member 17 and the second sorting member 18 is widened, but the distance D1 may be narrowed.

In each of the above embodiments, the first and second selection members 17 and 18 form a magnetic circuit with needle selection solenoids 20 and 25, and the butts 3a and 4a respectively
However, the first and second sorting members 36, 3 configured as shown in FIG.
You can set it to 7.

That is, the first sorting member 36 shown in FIG.
is designed so that only the tall butt 3a is engaged and moves in the front-rear direction in conjunction with a movable coil body (not shown) disposed within the carriage 9. Then, by driving the movable coil body based on the drive control signal SG4 output from the central processing unit 31 and controlling the movement of the first sorting member 36 in the front-rear direction, a high butt 3
a are sorted into either the front or rear knitting butt paths R3, R4, and the lower butts 4a are guided in the lateral direction without being sorted.

The second sorting member 37 has exactly the same structure as the first sorting member 36 except that the upper and lower height positions are different so that it engages with the low butt 4a. The movement in the front and back direction is controlled based on the output drive control signal SG5. Then, the low butts 4a that are guided in the lateral direction without being sorted by the first sorting member 36 are
The second sorting member 37 sorts the butts into either one of the front and rear butt passages R3 and R4.

Therefore, as in the previous embodiment, even if the carriage 9 is slid at a high speed, accurate and reliable sorting can be performed.

Effects As detailed above, according to this invention, the needle selection work of knitting needles is divided between the first and second selection members, so even if the knitting carriage is slid at a high speed, In addition to being able to accurately and reliably select the desired knitting needles and improving the efficiency of knitting work, it is also possible to create height differences in the butts of the knitting needles and utilize the difference in height to divide the needle selection work. Therefore, as shown in the conventional Japanese Patent Application Laid-Open No. 53-106855,
There is no need to attach a dedicated projection for needle selection separately from the butt of the knitting needle, or to add a new jack member. Therefore, there is no need to increase the length of the needle bed in the front-rear direction unlike when a jack member is attached, and the knitting machine as a whole can be made compact, and the structure is simple and inexpensive to manufacture. obtain.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram showing the installation state of the knitting carriage embodying this idea, Fig. 2 a, b
3 is a bottom view of the knitting carriage, FIG. 4 is a perspective view of the first sorting member, and FIG. 5 is a magnetic diagram of the first sorting member. An explanatory diagram to explain the circuit. Figure 6 is an electric circuit diagram of the knitting machine. Figure 7 is the output from the reference sensor and the first and second timing pulse generators when the knitting carriage is slid to the right. Fig. 8 is an explanatory diagram showing the output signals output from the right side reference sensor and the first and second timing pulse generators when the carriage for organization is slid to the left. FIG. 9 is a bottom view of the knitting carriage showing another example of this invention, and FIG. 10 shows the reference sensor, the first and An explanatory diagram showing the output signals outputted from the second timing pulse generator and their relative relationships, FIG. An explanatory diagram showing the output signals outputted from the generator and their relative relationships, and FIG. 12 is a partially cutaway bottom view of a knitting carriage showing another example of this invention. Needle bed...1, Needle groove...2, Knitting needle...3, 4, Butt as a high protrusion...3a, Butt as a low protrusion...4a, Detection plate...5, Right and left reference sensors... ...7,8, Carriage for organization...
9. First induction cam... 15. Second induction cam...
...16, First sorting member...17, 36, Second sorting member...18, 37, Iron core...19, Adsorption part...19b, 23, Needle selection solenoid...20,
25, Permanent magnet...21, Auxiliary magnetic pole piece...22,
24, Reference signal generator...26, First timing pulse generator...27, Second timing pulse generator...28, Central processing unit...31, First counter...32, Second counter...33 , needle selection data memory...34.

Claims (1)

[Claims for Utility Model Registration] A carriage 9 that moves on a needle bed 1 in which a large number of knitting needles 3 and 4 are arranged in a row, for sorting the knitting needles 3 and 4 into the two positions as the carriage 9 moves. In the needle selection control device comprising a sorting member, the knitting needles 3 and 4 are provided with butts 3a and 4a having different heights for each set of every other knitting needle, and the carriage 9 is provided with butts 3a and 4a having different heights for each set, and the carriage 9 is provided with butts 3a and 4a having different heights for each set. , a first sorting member that is placed high so as not to act on the knitting needles 3 and 4 of the lower butt 4a, and acts only on the needles of the higher butt 3a, and sorts them into two positions, front and back; 17, 36 and its first sorting member 1
Two front and rear passages R through which the butts 3a of the knitting needles 3 and 4 sorted into two positions, front and rear, by 7 and 36 pass.
3. A knitting needle with a low butt 4a, which is arranged in the middle of R4 and is located at a lower position than the first sorting members 17, 36, and runs straight below the first sorting members 17, 36. A needle selection control device for a knitting machine, characterized in that second sorting members 18 and 37 for sorting needles 3 and 4 into two positions, front and rear, are arranged in parallel in the direction of movement of the carriage 9.