JPS6015742B2 - Knitting machine needle selection control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a needle selection control device for a knitting machine, and more particularly to a control device that selects needles through selective excitation control of electromagnets using electrical signals output from a storage device.

The present invention uses an electronic memo IJ element as a recording element for needle selection data according to a knitting pattern, takes advantage of its large storage capacity, and combines this with the conventional electromagnetic selection control type control mechanism. The purpose is to obtain reliable and effective needle selection control with a relatively simple circuit configuration and a wide range of pattern lines.

In the case of the present invention, there is no particular requirement for strict synchronization timing in the relationship between carriage position detection and data readout of the electronic memory. Therefore, it is characterized by excellent control certainty and stability. To explain the figures below, as shown in Fig. 1, 200-sized striped needles 2 are supported in rows on a needle bed 1 so as to be movable back and forth and up and down, and are always supported by leaf springs 3 as shown in A. held in the upper position.

As shown in FIG. 2, the carriage 4 is provided with a lowering cam 5, and after the knitting cam 6 has passed, the knitting line needle 2 is pushed down to a lower position like a mouth by the lowering cam 5. belongs to. Further, the carriage 4 is provided with a switch operating member 18 at the center of the lowering cams 5 and 5'. A virtual block is defined for every eight green needles in a row, and switches S2 to S26 are sequentially arranged in the center of each block in a fixed relationship with respect to the needle bed. As shown in FIG. 2, switches SI and S27 are provided at the same pitch outside both ends of the switches S2 to S26. The switches SI to S27 are activated by contact or approach opening/closing of the switch operating member 18 as the carriage 4 moves. When the switches SI to S27 are magnetic 6-switches, the switch action member 18 uses a permanent magnet, and when the switches SI to S27 are microswitches, the switch action member 18 uses a switch pressing cam. The needle bed 1 divides the striped needles 2 arranged in rows, and a name is given to each block of eight rope needles at a pitch as shown in FIG. 2 to explain the subsequent operation. i.e. A, 8, C, A
, B, C, etc., and the three blocks A, B, and C form one group, and from then on, B...K groups are provided. However, the K group includes only the A block. As shown in FIG. 3, the eight handle plates GI to G8 are provided with a large number of protrusions 8 at a pitch of eight knitting needles, and one protrusion 8 is provided for each weaving needle 2. There is. If the protrusion 8 is in the position shown by the dotted line when the striped needle 2 is pushed down, the bran needle 2 is locked in the lower position. The locked knitting needles 2 are placed in the first position of the sorting cam 9.
Striped needles 2 that pass through the cam 10 and are sorted by the second cam 11 and are not locked are sorted out from the first cam 1. This is a known effect. Handle plate GI~G8 is spring 12
It is in a non-operating position where it is not locked. In the handle plates GI to G8, 24 birches AI to A8, BI to B8, and CI to C8 are passed through the window holes, and each handle plate CN' is correspondingly combined with the handle plates AN, BN, CN'. When activated, the size of the window hole is changed so that the protrusion 8 can move vertically enough to lock the knitting needle 2. Karahan AI~A8, BI~B8, CI~C8
pass through two window holes in the holding plate 7 and engage with the cam groove 14 of the circulation cam 13. Each pattern AI~A8, BI~B8,
For CI to C8, 24 solenoids S〇LAI to A8, S〇LBI to B8, and S
〇Each plunger of LCI~C8 PAl~A8, PBI~
B8, PCI to C8 serve as the fulcrum of the movement. When the solenoids SOLAI~A8 are energized, the plunger PA
1 to A8 are suctioned and the fulcrum action of the plunger on each handle bar is eliminated. The working relationship is schematically shown in FIGS. 4 and 5.
FIG. 4 shows the operation when the solenoids SOLAI to A8 are in a non-energized state, and FIG. 5 shows the operation when the solenoids SOLAI to A8 are in a energized state. In order to reduce the installation space, the solenoids SOLAI to C8 are alternately installed one above the other as shown in FIG. The rotating member 16 is rotated by the sliding movement of the carriage 4 via the belt 15, and the circulation cam 13 is rotated by a cage gear (not shown) at a rate of one rotation per three blocks of travel of the carriage. When the circulation cam 13 is unfolded, 24 cam grooves 14 are provided as shown in FIG. Each cam groove 14 is provided with a convex portion 17 corresponding to the amount of movement of the carriage 4 at a four-striped needle pitch, and adjacent convex portions 17
is shifted by an amount corresponding to the amount of movement of the carriage 4 of one line needle pitch, as shown in FIG. When the carriage 4 moves from left to right, the circulation cam 13 rotates in the direction of arrow 1, and vice versa. The relationship between the position of the carriage 4 with respect to each paper needle and the pattern twills AI to C8 on which the convex portion 17 of the circulation cam 13 acts is fixed as described below. There is a correlation between the center position of the five bran needles that are pushed down by the push-down cam 5 and pass through the first cam 10 and the handle acting on the center of the convex part 17, and for example, the position is in the A block. The first of the blocks corresponds to the handle A1, and the Nth of the C block corresponds to the handle CN.
In the case of the lowering cam 5', the intervals between the positions are set to two groups, that is, a four-line pitch, so that the same relationship is established. This is similar to a conventionally known example. For example, when the convex portion 17 acts on the handle C3 as shown in FIG. 7, if the solenoid SOLC3 is not energized, the plunger PC3 becomes a fulcrum and moves the handle plate G3 against the spring 12. On the other hand, when the convex portion 17 acts on the shank C6 as shown in FIG. 7, if the solenoid SOLC6 is energized, the plunger PC6 is attracted and the shank C6 moves using the window in the handle plate G6 as a fulcrum. However, the handle plate C6 is not moved. Also Karajo B
When the convex portion 17 is not acting as shown in I, the solenoid SOLBI does not drive the handle plate GI regardless of whether it is energized or not (however, the handle plate GI may be moved by the handle plate AI or CI. ). Figure 8 shows the solenoid SOL.
An example of an electric circuit diagram for controlling AI to C8 is shown. The switches S2 to S26 are converted into binary signals by the encoder 101 and serve as address inputs of a ROMI02, which is a type of integrated circuit element and is called a read-only memory (hereinafter referred to as ROM). The stage switch 103 is the stage counter 10
It is connected to the up count input of 5. Reset switch 104 is connected to the reset input of stage counter 105. When the reset switch 104 operates, the stage counter 105 outputs a binary signal indicating the first stage. Each time the stage switch 103 acts, the stage counter 10
The binary signal of 5 is added and counted by 1. The stage switch 103 is attached to a known carriage reversal detection mechanism (not shown) or the like. The output binary signal of the stage counter 105 is sent to the ROMI02 along with the output binary signal of the encoder 101.
This is the address input. The needle selection information for each block in each stage is electronically stored in the ROMI 02 in advance. The output of each bit of ROMI02 is latch 1.
06, latch 107, and latch 108.
Each output of latch 106 is connected to each input of latch 109, and each output of latch 109 is connected to solenoids SOLAI-A8 through a solenoid drive circuit 112. Each output of the latch 107 is connected to each input of a latch 110, and each output of the latch 110 is connected to a solenoid SOLBI through a solenoid drive circuit 112.
Connected to B8. Each output of the latch 108 is connected to each input of the latch 111, and each output of the latch 111 is connected to a solenoid S via a solenoid drive circuit 112.
OLCI~C. 8 is connected. The action input LI of the latch 106 is the switch S2, 5, 8, 11, 14, 17
, 20, 23, and 26, and its circuit is not shown. The action input L2 of the latch 107 is connected to the switches S3, 6,
9, 12, 15, 18, 21, and 24 (not shown), and the action input L3 of the latch 108 is the logical sum of the switches S4,
7, 10, 13, 16, 19, 22, and 25 (not shown). The action input L4 of the latch 109 is the switch SI, 3, 4, 6, 7, 9, 10, 12, 13, 15,
16, 18, 19, 21, 22, 24, 25, 27, and the action input L5 of the latch 110 is the switch S.
2, 4, 5, 7, 8, 10, 11, 13, 14, 16,
It is the logical sum of 17, 19, 20, 22, 23, 25,
The action input L6 of the latch 111 is the switch S3, 5, 6,
8, 9, 11, 12, 14, 15, 17, 18, 20,
This is the logical sum of 21, 23, 24, and 26 (each not shown). The operation inputs L1, L2, and L3 of the latch require timing correction contents (another circuit) to ensure their operation, but they are not shown here. For example, when the switch S2 is activated, the ROM of the A block of the first group in FIG.
The needle selection information of I02 is output and the needle selection information is stored in the latch 106. At the same time, the output of the latch 107 is transmitted to the latch 110.
Solenoid drive circuit 112 is a known current multiplier circuit that energizes the solenoid when an input is applied. In the above explanation, each tri-channel for six latches 106 to 111
A supplementary explanation will be given regarding the inputs LI to L6.

The outputs of the 27 switches SI to S27 are combined as described above and their logical sums are used as the action inputs LI to L6, respectively. , 107, and 108 are repetitions shifted by three blocks, which is the pitch of the corresponding blocks in each group. For example, in the case of trigger LI, the above-mentioned logical sum inputs S2, S5, etc.
...If S26 is expressed as a general formula [LI=S(3h-1)
(However, m = 1 to 9)], and the triggers L2 and L3 are respectively [L2 = S (track), L3 = S (track 1) (however, n =
1 to 8)], in which the regularity of the apex order is clear.On the other hand, each of the trigger inputs L4 to L6 of the second-stage latches 109, 110, and 111 At first glance, the combination of OR inputs appears to be irregular.
To explain this point, the reason why six latches are provided in two stages of three latches corresponds to the distance between each of the left and right lowering cams 5, 5' and the switch action member 18, and is used for actual control. Since it follows the argument address of the target line needle SOMI02 with a delay of 3 blocks, first the first stage latch 106
~108, the issue data is temporarily stored only during the delay timing, and since this is the same regardless of the sliding direction of the carriage, the command timing of the data stock is repeated every 3 blocks. becomes regular. On the other hand, the trigger inputs L4 to L6 of the second-stage latches 109 to 111, which selectively excite and control the solenoids SOLAI to C8, can be expressed by a general formula following the above, and although they may seem irregular at first glance, they are actually It's simple. That is, the trigger L4 is the logical sum of the logical sum combination of the trigger L2 and the trigger L3 for the front-stage latch, and the switches SI and S27 are also added.Hereafter, the switch signals near both the left and right ends are ignored for convenience. Similarly, if we express it as [L20L3], [L5=LI+L3],
[L6=LI+L2], and in other words, L4
is all the switches (SI to S27) excluding the LI combination, L5 is the same excluding the L2 combination,
It can be said that the trigger timing for L6 is given by each logical sum with those excluding L3. That is, the trigger L4 of the latch 109 acts on the switch signals of all blocks other than the trigger LI of the latch 106, and below, both L5 and L6 act on other than the corresponding combination of previous triggers. Each latch in the latter stage 109~
111' is a needle block in which each previous stage does not operate, and the latch contents of each corresponding previous stage are immediately read, so that the lowering cam 5.
Each group of eight solenoids can wait in a selectively energized state before 5' arrives on the target needle block, and the trigger timing of each latch is not as critical. The operation when the carriage 4 slides from left to right in FIG. 2 will be explained.

When the switch actuating member 18 is in a position to actuate the switch SI, the latch actuating input L4 acts to cause the latch 10 to actuate.
9 stores the output of the latch 106, but since the lowering cam 8 has not yet acted on the striped needle 2, it has no substantial effect on the action.

Hereinafter, only the latch action inputs related to the action will be explained.
When the carriage 4 moves further and the switch actuating member 18 comes to the position where the switch S2 is actuated, the encoder 101
yields a binary signal signifying a group of A blocks. Therefore, the ROMI02 outputs the needle selection information of the A block of the first group in the stage indicated by the stage counter 105. A description of the stage signals of the subsequent stage counter 105 will be omitted hereafter. On the other hand, the latch action input LI acts to store the lotus needle information of the A block of the ROMI02 in the latch 106. The lowering cam 5 does not yet act on the green needle. When the carriage 4 further moves and the switch action member 18 comes to the position where the switch S3 is actuated, the latch action input L4 acts and the latch 109 is entrusted with the needle protection information of the A block of the first group of the ROMI02.
The solenoids SOLAI to A8 are selectively energized accordingly, the encoder 101 generates binary signals for one group of B blocks, and the ROMI02 outputs needle selection information for one group of eight blocks. The output is stored in the latch 107 by the latch action input L2. The reduction cam 5 does not yet act on the knitting needles. When the carriage 4 further moves and the switch actuating member 18 comes to the position where the switch S4 is actuated, the latch actuating input L5 acts and the latch 110 is connected to the ROMI0.
The needle selection information of the B block of the first group of 2 is stored, and the solenoids SOLBI to B8 are selectively energized accordingly, and the encoder 101 generates a binary signal of the C block of the first group. Outputs needle selection information. The output is latched 1 by the latching input L3.
Store it in 08. The lowering cam 5 does not yet act on the striped needle. When the switch action member 18 moves from switch S4 to S5, the lowering cam 5 begins to sequentially lower the striped needles of the first group of A blocks. Since the solenoids SOLAI~A8 are already energized by the needle selection information of the A block of the 1st group, the handles AI~A8 are actuated by the circulation cam 13, and the rope needles of the A block of the 1st group are energized by the needle selection information of the A block of the 1st group. The needles are selected sequentially based on the needle selection information. Then, when the switch S5 acts, the latch action input L
6 stores the needle selection information of the C block of group 1 in the latch 111, the solenoids SOLCI to C8 are selectively energized accordingly, the encoder 101 generates a binary signal of the A block of group B, and ROMI02 stores the needle selection information of the C block of group 0. The needle selection information of block A is output. Its output is stored in latch 106 by latch input LI. Then, the carriage 4 moves further and the switch action member 18 moves to the switch S5.
When the process moves from to S6, the lowering cam 5 sequentially lowers the striped needles of the first group of B blocks. Already solenoid SOLB
Since I to B8 are energized by the needle selection information of the B block of the 1st group, the handle twills 81 to B8 act sequentially by the circulation cam 13, and the side needles 2 of the B block of the 1st group are energized by the needle selection information of the B block of the 1st group. The needles are set in sequence according to the needle selection information. When the switch S6 is activated, the latch 109 is activated by the latch operation input L4.
Memorize the lotus needle information of the block, solenoid SOLAI ~
The energization state of A8 changes accordingly. At the same time, the encoder 101 generates a binary signal of the B block of the □ group, and the R
OMI02 outputs transparent needle information of B block of group 0.
Its output is stored in latch 107 by latching input L2. When the carriage 4 further moves and the switch action member 18 moves from the switch S6 to the switch S7, the lowering cam 5 sequentially lowers the knitting needles of the first group of C blocks.
Since the solenoids SOLCI to C8 have already been energized with the information on the needles of the first group of C blocks, the pattern twills CI to C8 act redundantly by the circulation cam 13, and the knitting needles 2 of the first group of C blocks Needles are selected sequentially based on block needle information. Then, when the switch S7 is activated, the needle selection information of the B block of the 0 group is stored in the latch 110 by the latch action input L5, and the energization state of the solenoids SOLAI to A8 changes accordingly. At the same time, the encoder 101 generates a binary signal of the C block of the 0 group, and the ROMI 02 outputs the needle selection information of the C block of the 0 group. The output is latched by the input L
3 is stored in latch 108. Thereafter, the striped needles 2 of each block of each group are selected in accordance with each needle selection information of each block of each group by the same operation. Next, the operation when the carriage 4 slides from right to left in FIG. 2 will be explained.

As before, only the latch action related to the operation will be explained, and the explanation of the stage signal of the stage counter 105 will be omitted.

When the switch acting section 18 passes through the switch S27 and is in a position where it acts on the switch S26, the encoder 10
1 produces the binary signal of A block of K group, ROMI02
outputs needle selection information for A block of K group. Its output is stored in latch 106 by latching input LI. When the carriage 4 moves further and the switch action section 18 comes to the point where it will actuate the switch S25, the latch action input L4 will act and the latch 109 will store the needle selection information of the A block of the K group of ROMI02. , solenoid SOLA8
~AI selectively energizes accordingly, and the encoder 101 generates a binary signal of the C block of the skin group, and R
OMI02 outputs needle selection information for the C block of the skin group.
The output is stored in the latch 108 by the latch action input L3. The lowering cam 5' does not yet act on the bran needle. When the carriage 4 further moves and the switch action member 18 comes to the position where the switch S24 is actuated, the latch action input L6
acts, the latch 111 stores the needle information of the C block of the wind group of ROMI02, and the solenoid SOLC8~C
I is selectively energized accordingly, and encoder 01 generates a binary signal of B block of W group, and ROM
I02 outputs needle selection information for the B block of the side group. The output is stored in the latch 107 by the latch action input L2. The reduction cam 5' does not yet act on the knitting needles. When the switch action member 18 moves from switch S24 to S23, the lowering cam 5' begins to sequentially lower the knitting needles of A block of K group. Solenoids SOLA8~AI are already A of K group.
Circulation cam 1 is energized based on block needle selection information.
3, the knitting needles A8 to AI operate in sequence, and the knitting needles of the A block of the K group are sequentially selected based on the knitting needle information of the A block of the K group. Then, when the switch S23 is activated, the latch 110' stores the needle selection information of the B block of the Kobata group by the latch action input L5, and the solenoids SOLB8 to BI are selectively energized accordingly, and the encoder 01 is activated for the A block of the skin group. A binary signal is generated, and the ROMI02 outputs the needle selection information of the A block of the skin group. Its output is stored in latch 106 by latch input LI. When the carriage 4 further moves and the switch action member 18 moves from switch S23 to S22, the lowering cam 5' sequentially lowers the striped needles of the C block of the wind group. Since the solenoids SOLC8-CI are already energized by the needle selection information of the C block of the field group, the circulation cam 13 is used to control the birch C8-CI.
acts sequentially, and the lagoon needles 2 of the C blocks of the skin group are sequentially pierced using the transparent needle information of the C blocks of the skin group. Thereafter, the striped needles 2 of each block of each group are penetrated in accordance with each needle selection information of each block of each group by the same operation. As mentioned above, in the present invention, when the carriage is operated, first, the stock data is extracted from the ROM in accordance with the detection of the position of the carriage, and this is transferred to the first stage latch, and then the target line needles in blocks are first set as a group. After selectively controlling the excitation according to the input data, it suppresses the arrival of the lowering cam, and in this way, multiple knitting needles are treated as one unit, and the knitting needles are linked with the corresponding carriage position detection signal means. This makes position detection easier and synchronization easier than in the case of carriage position detection for each knitting needle. The above-mentioned means of the present invention can utilize the conventional methods of detecting the carriage position via a belt and operating the handle plate via a circulation cam, and combines these with the use of a fin closing harpoon. This makes it possible to control needle selection over a wide range of rope patterns with high accuracy.

[Brief explanation of the drawing]

FIG. 1 is a partial sectional view of the main parts of a loom showing the needle selection mechanism of the present invention, and FIG. 2 is a schematic diagram showing the positional relationship of some of the constituent elements.
Fig. 3 is a partial configuration explanatory diagram of some other constituent elements, Figs. 4 and 5 are explanatory diagrams of the operation of the electromagnetic device, which is one of the requirements of the present invention, and Fig. 6 is another one of the requirements. FIG. 7 is a partial explanatory view of the needle selection operating mechanism, and FIG. 8 is a block diagram of the electric circuit of the present invention. 1... Needle bed, 2... Striped needle, 4... Carriage, SI
~S27... Electric switch, 18... Switch action member. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8

Claims (1)

[Claims] 1. A plurality of knitting needles supported on a needle bed so as to be movable back and forth and up and down, a carriage movably disposed on the needle bed, and a lowering member provided on the carriage for sequentially lowering the knitting needles to a lower position. a block detection means for dividing the positions of a plurality of knitting needles into respective blocks with respect to the needle bed and detecting the position of the knitting needles rolled down by the rolling member as a block signal; and needle selection data of the knitting needles corresponding to the blocks. and a needle selection control means for selecting the knitting needles in accordance with the needle selection data, reads the needle selection data from the data storage means in response to the block signal,
A needle selection control device for a knitting machine that selects the knitting needles for each block.