JPH03287842A - Controller for circular knitting machine - Google Patents

Abstract

PURPOSE:To facilitate a setting change in the extent of shift in needle selecting positions of cylinder needles from dial needles by adding the set extent of shift in the needle selecting positions of a cylinder needle selecting means from a dial needle selecting means to a command of needle selecting positions of the dial needles and issuing the resultant command. CONSTITUTION:A cylinder needle selector 6 and a dial needle selector 7 are shifted and arranged. Data (ED) on the number of needles indicating the extent of shift are memorized through a device 12 for inputting the extent of shift in a memory device 13 for the extent of shift. The data (ED) are delivered to an adder 14, added to initial data (DI) delivered from an initial setting computer 16 and then delivered to a dial pattern data read-out address integrator 9.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a control device for controlling pattern knitting by a circular knitting machine.

(Prior technology) In conventional circular knitting machines, cylinder needles were selected using electronic pattern selection, and dial needles were selected using an arbitrary fixed pattern. With the advent of circular knitting machines with needle selection, it became possible to create patterns freely even with dial needles, making it possible to knit complex patterns.

FIG. 5 is a block diagram showing an example of a circular knitting machine with electronic pattern selection for both cylinder needles and dial needles, and its conventional control device. The cylinder needle pulse CP generated when the cylinder needle 1 or the cylinder needle pulse 4 passes, and the dial needle pulse DP generated when the dial needle 2 passes in front of the dial needle detector 5 are used as the initial setting signal IN.
The pressure is sent to the cylinder pattern data read address accumulating device 8 and the dial pattern data read address accumulating device 9 which have been initialized via the initial setting calculation devices 15 and 16, respectively. Cylinder pattern data read address CA and dial pattern data read address DA are transferred from each pattern data a+address integration devices 8 and 9 to cylinder pattern storage device 10 and dial pattern storage device 11
Cylinder pattern data CG and dial pattern data DG sent to and stored in each address CA and DA, respectively.
is a knitting machine - cylinder needle selection devices 6 installed on the circumference
The number of cylinder pattern data distribution devices 17 and the dial pattern data distribution device 18 are respectively sent to the number of dial needle selection devices 7. Each needle selection signal is sent to the cylinder needle selection drive device 1 so that each pattern data CG and DG is distributed to the corresponding cylinder needle selection device 6 and dial needle selection device 7, respectively.
9 and the dial needle selection drive device 20, respectively. Then, the cylinder knitting signal CD and dial knitting signal DD are sent from each needle selection drive device 19 and 20 to the corresponding cylinder needle selection device 6 and dial needle selection device 7, respectively, and cylinder needle 1 and dial needle 2 are driven. It looks like this.

In such a configuration, an example of its operation will be explained with reference to the flowchart in FIG.
When N is input to the initial setting calculation devices 15 and 16, the initial setting calculation devices 15 and 16 send initial data CI and DI to the cylinder pattern data read address integration device 8 and the dial pattern data read address integration device 9, respectively. The pattern data read addresses CA and DA of devices 8 and 9 are set to "0" (step 521S22). The operation of the circular knitting machine is started (step 523), and the cylinder pattern data reading address integration device 8 checks whether cylinder needle pulse CP is generated (step 524). If cylinder needle pulse CP is not generated, dial The pattern data reading address accumulating device 9 checks whether or not a dial needle pulse DP is generated.
(Step 528) If no dial needle pulse DP is also generated, checking is continued until either needle pulse CP or DP is generated.

Cylinder pattern data read address When the integrating device 8 checks the cylinder needle pulse CP, the cylinder pattern data read address C
Increase A by 1 count (step 525),
Send to cylinder pattern storage device lO (step 526)
, sends the cylinder pattern data CG corresponding to the cylinder pattern data read address CA to the cylinder pattern data distribution device 17. The cylinder pattern data distribution device 17 determines the cylinder needle selection device 6 to select the needle based on the cylinder pattern data CG,
The needle selection signal from the cylinder needle selection device 6 is sent to the cylinder needle selection drive device 19. And cylinder needle selection drive device 1
9 sends the cylinder knitting signal CD to the corresponding cylinder needle selection device 6 to drive the cylinder needle 1 (step 5
27).

When the dial pattern data reading ratio address accumulating device 9 checks the dial needle pulse OP, it counts up "+1" for the dial pattern data reading ratio 8 (step 52).
9) Step 53: Send to dial pattern storage device 11
0), the dial pattern data DG corresponding to the dial pattern data read address DA is sent to the dial pattern data distribution device 18. The dial pattern data distribution device 18 determines the dial needle selection device 7 to be selected based on the dial pattern data DG, and sends a needle selection signal of the dial needle selection device 7 to the dial needle selection driving device 20. Then, the dial needle selection drive device 20 sends the dial formation signal D[l to the corresponding dial needle selection device 7 to drive the dial needle 2 (step 531).

In this way, the operation of the cylinder needle 1 (from step 524 to
527), operation of dial knob 2 (steps 528 to 5)
By repeating step 31) as appropriate, the pattern can be knitted.

(Problem to be solved by the invention) The above-mentioned cylinder needle 1 is connected to a needle selection device 6 as shown in FIG.
The needle is selected as it passes in front of the needle, and it is decided whether to let it pass through as it is or to raise it.When raising the needle, it starts rising at the needle selection position, hooks the thread at the top dead center, and when descending the thread Perform a pulling motion. Incidentally, the dial hand 2 also performs the same operation, although the direction is different. Therefore, as is clear from the figure showing the trajectories of the tips of cylinder needle 1 and dial needle 2 in Fig. 8, when the needle selection positions of cylinder needle 1 and dial needle 2 are the same, the threads are pulled at the same time. Therefore, the thread tension becomes excessive and thread breakage is likely to occur, but conventional control devices have a problem in that it is impossible to avoid this phenomenon.

The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide a control device for a circular knitting machine that can freely set and change the amount of deviation between the selected position of cylinder needles and the selected position of dial needles. Our goal is to provide the following.

(Means for Solving the Problems) The present invention has a plurality of cylinder needles and dial needles, and the cylinder needles and dial needles are driven by commanded predetermined cylinder needle selection means and dial needle selection means, thereby changing the pattern. The present invention relates to a control device for a circular knitting machine that performs knitting, and an object of the present invention is to provide a control device for a circular knitting machine, which comprises a setting device for setting the amount of deviation between the cylinder needle selection device and the dial needle selection device, which are arranged to be shifted in advance. This is achieved by adding the set amount of deviation to the needle selection position command for the dial hands.

(Function) In the present invention, since the cylinder needle and dial needle are always selected to be shifted by the amount of shift inputted in advance,
It is possible to avoid the cylinder needle and dial needle having the same needle selection position.

(Embodiment) FIG. 1 is a block diagram showing an example of a control device for a circular knitting machine according to the present invention in correspondence with FIG. 5, and the same components are given the same reference numerals and the explanation thereof will be omitted. The cylinder needle selection device 6 and the dial needle selection device 7 are arranged to be shifted from each other in advance, and the number of needles data ED representing the amount of shift is stored in the shift amount input device 12.
It is stored in the deviation amount storage device 13 via. Then, this deviation needle position number data ED is sent to the adding device 14,
Initial data D sent from the initial setting calculation device 16
It is added to I and sent to the dial pattern data reading address accumulating device 9.

An example of the operation of a control device equipped with a deviation amount setting means configured as described above will be described with reference to the flowchart in FIG. At the same time, the initial setting signal IN is input manually to the initial setting calculation devices 15 and 16 (step 52). Here, for example, as shown in FIG.
In a circular knitting machine equipped with ", when the cylinder needle selection device 6 and dial needle selection device 7 are operated with an offset of three needles,
The misplaced needle number data ED is "3". The initial setting calculation device 15 sends initial data CI to the cylinder pattern data read address accumulating device 8, and sets the cylinder pattern data read address CA of this device 8 to "0". On the other hand, when the initial setting calculation device 16 sends the initial data [11] to the adding device 14, the adding device 14 reads the deviation needle position number data ED "3°" from the deviation amount storage device 13, adds it to the initial data DI, and adds it to the dial pattern. The data readout address is sent to the data readout address accumulating device 9, and the dial pattern data readout address DA of this device 9 is set to “O+3(
The circular knitting machine starts operating (step S4), and the cylinder pattern data reading ratio address integrating device 8 checks whether cylinder needle pulse CP is generated (step S5). If CP has not occurred, the dial pattern data reading address accumulating device 9
checks whether the dial needle pulse DP is generated (
In step S9), if dial needle pulse DP is not generated, checking is continued until either needle pulse CP or DP is generated.

When the cylinder pattern data read address integration device 8 checks the cylinder needle pulse CP of the cylinder needle "CIO", the cylinder pattern data read address CA is counted up by +1" and set to "1" (step S6). The cylinder pattern data CG corresponding to the cylinder pattern data read address C^'1'' is sent to the cylinder pattern data distribution device 17 (step S7).

The cylinder pattern data distribution device 17 is a cylinder pattern data CG.
The cylinder needle selection device 6 to be selected is determined by
Send on 9th. Then, the cylinder needle selection drive device 19 sends the cylinder knitting signal CD to the corresponding cylinder needle selection device 6 to drive the cylinder needle “C1” (step S
8).

For example, when the dial pattern data reading address integration device 9 checks the dial needle pulse DP of the dial needle "010", the dial pattern data reading ratio address DA is counted up by "+1" to "4" (step 510), and the dial pattern data reading ratio address DA is counted up by "+1" to "4". In step 5ll), the dial pattern data DG corresponding to the dial pattern data read address DA "4" is sent to the dial pattern data distribution device 18.

The dial pattern data distribution device 18 receives dial pattern data DG.
The dial needle selection device 7 to be selected is determined by
Send to o. Then, the dial needle selection drive device 2o sends the dial formation signal DD to the corresponding dial needle selection device 7 to drive the dial needle “C4” (Step 5
12).

In this way, the operation of the cylinder needles "CI, C2..." (
Steps 55 to S8) and the operation of the dial needles "C4, 05..." shifted by three needles as shown in Fig. 4 (steps 59 to 512) are repeated as appropriate to reduce the thread tension and create a pattern. It is possible to compile the following.

In addition, in the above-mentioned embodiment, a case was explained where the application is applied to a circular knitting machine equipped with a plurality of cylinder needle selection devices and a dial needle selection device. It is also applicable to circular knitting machines.

(Effects of the Invention) As described above, according to the control device for a circular knitting machine of the present invention, the operator can freely set and change the amount of deviation between the needle selection position of the cylinder needle and the needle selection position of the dial needle. Needle 1
It is also possible to prevent thread tension from becoming excessive due to the needle selection positions of the dial needles 2 being the same, and it is possible to reduce the occurrence of thread breakage and significantly improve production efficiency.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an example of a control device for a circular knitting machine according to the present invention, and FIG. 2 is a flowchart explaining an example of its operation.
3 and 4 are diagrams for explaining specific operations of the device of the present invention, FIG. 5 is a block diagram showing an example of a conventional control device for a circular knitting machine, and FIG. 6 is an explanation of an example of its operation. The flowcharts shown in FIGS. 7 and 8 are detailed diagrams illustrating the specific operations of the conventional apparatus. 1... Cylinder needle, 2... Dial needle, 4... Cylinder needle detector, 5... Dial needle detector, 6...
Cylinder needle selection device, 7...Dial one needle device, 8...
- Cylinder pattern data readout address integration device, 9... Dial pattern data readout address integration device, 1o... Cylinder needle selection device, 11... Dial pattern storage device, 12... Displacement amount input device, 13. ... Displacement amount storage device, 14... Addition device, 1516... Initial setting calculation device, 17...
Cylinder pattern data distribution device, 18... Dial pattern data distribution device, 1st... Cylinder needle selection drive device, 2o.
...Dial needle selection drive device. t3 figure

Claims (1)

[Claims] 1. In a control device for a circular knitting machine that has a plurality of cylinder needles and dial needles and knits a pattern by driving the cylinder needles and dial needles by commanded predetermined cylinder needle selection means and dial needle selection means. , comprising a setting means for setting an amount of deviation between the cylinder needle selection means and the dial needle selection means, which are arranged to be shifted in advance, and adds the set deviation amount to a needle selection position command of the dial needle and issues the command. A control device for a circular knitting machine, characterized in that: