KR20080033078A - Flat knitting machine - Google Patents

Abstract

A flat knitting machine is provided to select a knitting needle efficiently, based on relative movement of a needle bed and a carriage at the racking time, thereby improving the knitting efficiency. A carriage position detection unit(18) detects a position of a carriage(13) with respect to a flat knitting machine(11). A racking control unit(20) controls a racking element(19). A needle bed position detection unit detects a position of a needle bed(12) with respect to the flat knitting machine. A position calculation unit calculates a position of the carriage with respect to the needle bed, based on the detected position of the carriage with respect to the flat knitting machine and the detected position of the needle bed with respect to the knitting machine. A needle selection control unit controls the selection of knitting needles during movement of the needle bed by the racking, based on the calculated position of the carriage with respect to the needle bed. Further, the racking control unit controls the racking in order to rack while the carriage is transferred.

Description

Flat Knitting Machine {FLAT KNITTING MACHINE}

TECHNICAL FIELD This invention relates to the flat knitting machine which selects a knitting needle at the time of knitting a knitted fabric by driving a knitting needle by the cam mechanism mounted in a carriage.

Background Art Conventionally, in the flat knitting machine, a large number of knitting needles are provided side by side in the longitudinal direction of the needle bed, the carriage is reciprocated in the longitudinal direction, and the knitting mechanism is knitted and driven by a cam mechanism mounted on the carriage.

The knitting operation of the knitting needle driven by the cam mechanism includes three basic operations of knit, tuck and miss. In the needle bed gap in which the knitting needles perform knitting operations, the front and rear needle beds are opposed to each other, so that the movement between the needles of the front and rear needle beds and the relative movement of the front and rear needle beds are possible. Iii) can be organized. In order to drive the individual knitting needles according to the previously input knitting data while driving the carriage with respect to the needle bed, a carriage needle is also mounted on the carriage (see Patent Document 1, for example).

The needle needle mechanism is provided with a needle selection actuator, and the selection of the needle is made based on the position of the carriage relative to the needle bed. However, the position of the carriage while traveling is not directly detected with respect to the needle bed, and as shown in FIG. 2 of Patent Document 1, a needle selection gauge (needle selection) separately provided in parallel to the needle bed in the frame of the flat knitting machine It is detected by a sensor from the gauge. The needle selection gauge is a magnetic sensor which is inscribed with an unevenness equal to the pitch of the knitting needle on a metal plate and moves relatively with respect to the needle selection gauge, and can detect a change in a signal due to movement. . By knowing the position of the carriage, the position of the needle selection actuator mounted on the carriage can be calculated, and each needle selection actuator can be selectively driven in correspondence with the position of the single needle to make the needle tip. However, even if the needle bed is moved while the carriage is stopped and the needle bed is moved, the sensor does not detect the position during travel, and thus cannot be reflected in the needle. Therefore, the needle tip is performed while the carriage is running, and the racking is performed while the carriage is stopped.

As for the traveling stroke of the carriage, a flat knitting machine having a data processing apparatus capable of optimizing the movement of the carriage and limiting it to the minimum movement stroke required for the formation of the stitch is also disclosed (for example, patent document). 2). In patent document 2, while detecting a carriage position, a carriage movement direction, and the position of the yarn feeding device which supplies the knitting yarn, the data regarding a knitting fabric width | variety, needle bed movement, the stitch string to be made now, and the next stitch string is referred. The microprocessor included in the optimization circuit supplies the carriage driving motor with an output signal which produces a minimum carriage movement stroke with respect to the knitted fabric width while operating all the knitting needles necessary for the knitting needle selector to form a stitch row. However, nothing is described about how the needle bed movement is reflected in the minimum carriage movement stroke. When racking, it is thought that it is necessary to move the carriage out of the range of movement.

Patent Document 1: Publication No. 2003-091490

Patent Document 2: Japanese Patent No. 2647522

In flat knitting machines like Patent Literatures 1 and 2, a line needle is made based on the position of the carriage detected with respect to the flat knitting machine. In such a needle tip device, the racking is performed while the carriage is stopped so that the impact of the racking does not affect the needle tip. By dividing the needle and the rack separately, additional processing corresponding to the influence of the racking during the running of the carriage with the needle is required. As a result, the traveling stroke of the carriage becomes large, resulting in the fall of knitting efficiency.

An object of the present invention is to provide a flat knitting machine which can improve knitting efficiency by racking a needle in a rackable flat knitting machine.

The present invention is a flat knitting machine capable of driving a knitting needle by a cam mechanism mounted on a carriage that reciprocates the length of a needle bed along a needle bed gap, and capable of moving the needle bed in a longitudinal direction. Carriage position detecting means for detecting the position of the carriage, racking control means for controlling the locking, needle bed position detecting means for detecting the position of the needle bed relative to the flat knitting machine, transverse direction detected by the needle bed position detecting means Position calculating means for calculating the position of the carriage relative to the needle bed based on the position of the needle bed relative to the knitting machine and the position of the carriage relative to the transverse knitting machine detected by the carriage position detecting means, and the needle bed calculated by the position calculating means The teeth of the needle bed by racking, based on the position of the carriage relative to It is a flat knitting machine characterized by including the fine needle control means which controls so that selection of a knitting needle can be carried out.

In the present invention, the racking control means is characterized in that the racking is controlled so that the carriage stops after exiting the knitting end in the knitting course before the racking.

In addition, in the present invention, the racking control means, the racking, characterized in that for controlling the carriage while driving.

According to the present invention, the position of the carriage relative to the needle knitting machine and the position of the needle bed are detected to calculate the position of the carriage relative to the needle bed. Since the needle needle is selected during the movement of the needle bed by the racking based on the calculated position of the carriage relative to the needle bed, it is possible to improve the knitting efficiency by efficiently selecting the needle based on the relative movement of the needle bed and the carriage during racking. Can be.

In addition, according to the present invention, it is possible to make a needle tip at the time of racking to stop the carriage. It is not necessary to drop the carriage stop position from the knitting width of the knitted fabric more than the moving width of the racking, and the knitting stroke can be reduced to increase the knitting efficiency.

In addition, according to the present invention, even if the rack is moved during the movement of the carriage, it is possible to make a tip based on the positional information including the effect of the racking. Since the racking can be included in the knitting operation of the carriage, the knitting efficiency can be improved.

EXAMPLE

1 schematically shows a schematic configuration of a flat knitting machine 11 according to one example of the practice of the present invention.

In the flat knitting machine 11, the carriage 13 reciprocates along the longitudinal direction of the needle bed 12, so that the knitted fabric 14 can be knitted. One or more sets of cam mechanisms 15 are mounted on the carriage 13, and needle selection actuators 16 are disposed before and after the travel direction of the cam mechanisms 15, respectively. The carriage 13 is also provided with a return cam 17 for returning each of the needles to the initial state before the needle needle actuator 16 makes a needle needle. The position of the carriage 13 is calculated by processing a signal detected by the position sensor 18 as the carriage position detecting means mounted on the carriage 13 on the unevenness of the needle selection gauge 11a provided in the flat knitting machine 11 in parallel with the needle bed 12. The structure of position detection by such a needle selection gauge 11a and the position sensor 18 is shown by FIG. 2 of patent document 1. As shown in FIG. The needle bed 12 can be moved to the left and right of the figure as indicated by the arrow by the locking mechanism 19. The carriage 13 of the flat knitting machine 11 and the locking mechanism 19 are controlled by the controller 20.

Fig. 1 shows a state where the carriage 13 is stopped once when the carriage 13 reverses the running direction. The carriage 13 is stopped at the position to the right of the knitting width of the knitted fabric 14. It is not necessary to provide an interval as much as the movement width by the racking between the right end of the knitted fabric 14 and the left end of the carriage 13. When locking the needle bed 12 to the right while the carriage 13 is stopped, the carriage 13 moves to the left relative to the needle bed 12. When the carriage 13 reverses the driving direction and starts to move to the left, You must precede the selection.

In order to perform a needle needle, it is necessary to detect the position of the carriage 13 with respect to the needle bed 12 also at the time of racking. When the carriage 13 is stopped and racked, no change in the position detected by the position sensor 18 occurs. However, the controller 20 can detect the position of the needle bed 12 changed by the racking when the racking mechanism 19 is controlled.

Combining the position of the carriage 13 with respect to the flat knitting machine 11 detected by the position sensor 18 and the position of the needle bed 12 changed with respect to the flat knitting machine 11 during racking, the position change with respect to the carriage 13 of the needle bed 12 by racking is calculated | required, The needle selection actuator 16 can be controlled to cause a needle tip.

Fig. 2 schematically shows the knitting operation of the flat knitting machine 11 including the needle needle operation at the time of racking. Knitting starts from step a0, and general knitting is performed in step a1. Since the general knitting does not include the racking, the starting point is made based on the change of the position of the carriage 13 during the driving detected by the position sensor 18. In step a2, the carriage 13 is stopped by the edge part of the knitted fabric 14 to knit. In step a3, it is determined whether or not the knitting is finished. If it is determined that the knitting is not finished, it is determined whether or not there is a racking in step a4. If there is a racking, the racking is performed in step S5. If the needle action is possible during the racking, the racking and the needle point are performed. When the racking of the step a5 and the needle point are finished or it is determined that there is no racking in step a4, the reverse running of the carriage 13 is started in step a6, and the process returns to step a1. When it is determined in step a3 that the knitting is finished, the knitting process is terminated in step a7 and the knitting operation ends.

Fig. 3 schematically shows the knitting operation of the flat knitting machine 11 in which the racking is carried out while the carriage 13 is running. Knitting starts from step b0, and general knitting is performed in step b1. In step b2, it is determined whether or not there is a racking during the general knitting. If there is a racking, the racking is performed in step b3. If a needle is possible during racking, the needle is made.

As shown in Fig. 1, the position sensor 18 detects the position of the carriage 13 with respect to the flat knitting machine 11. When the position of the needle bed 12 with respect to the flat knitting machine 11 during lacing by the locking mechanism 19 is detected and combined with the position of the carriage 13, even if the direction of the racking is the same or opposite to the traveling direction of the carriage 13, The position of the carriage 13 relative to can be calculated. When it is judged that there is no racking in step b2 after the racking and the needle point of step b3 are finished, in step b4, the carriage 13 is stopped at the end of the knitted fabric 14 to be knitted. In step b5, it is determined whether or not the knitting is finished. If it is judged that the knitting is not finished, the reverse running of the carriage 13 is started in step b6, and the flow returns to step b1. When it is determined in step b5 that the knitting is finished, the knitting is terminated in step b7 and the knitting operation is finished.

4 shows a schematic system configuration of the controller 20 for controlling the flat knitting machine 11 of FIG. In the flat knitting machine 11, the carriage 13 is provided for each of the front and rear needle beds 12, and therefore, the front carriage control unit 21 and the rear carriage control unit 22 are respectively controlled. The position of the flat knitting machine 11 in the carriage 13 of each needle bed is magnetically formed by the unevenness and light streaks formed on the needle selection gauge 11a shown in Fig. 1 corresponding to the pitch of the knitting needle. Alternatively, the carriage position two-phase signal detection unit 23 detects based on the output of the position sensor 18 that is optically detected. The movement of the front and rear needle beds 12 by the racking is the position of the needle bed 12 with respect to the frame of the flat knitting machine 11, and the front racking encoder 24 and the rear racking encoder as the needle bed position detecting means. 25 each. In the case where the driving of the racking mechanism of FIG. You can also input a signal. The needle selection actuator 16 of the carriage 13 of the front and rear needle beds 12 is driven by the front actuator ON / OFF output section 26 and the rear actuator ON / OFF output section 27, respectively.

Since the inside of the front carriage control unit 21 and the rear carriage control unit 22 have basically the same configuration, only the front carriage control unit 21 will be described, and the rear carriage control unit 22 will be omitted. The former carriage control unit 21 includes a unit conversion unit 31, a carriage speed calculation unit 32, a speed correction unit 33, and a needle selection data storage unit 34 as the software processing unit 30. The hardware processing unit 40 includes a carriage position counter 41, an adder 42, an output position determiner 43, and an actuator ON / OFF setter 44.

The needle data stored in the needle data storage 34 is for the entire needle bed 12. This needle point data is output from the CPU 50 which controls the knitting operation of the flat knitting machine 11 as a whole.

The CPU 50 combines the data previously stored in the knitting fabric data storage unit 51 and the knitting machine parameter storage unit 52, inputs the knitting data 53, and outputs the needlepoint data for each knitting course. In the knitted fabric data storage 51, data relating to the shape and shape of the knitted fabric to be knitted, the knitting yarn to be used, and the like are previously created and stored. In the knitting parameter storage unit 52, parameters necessary for knitting in the flat knitting machine 11 are stored. The carriage driver 54 controls the direction, speed, and travel range in which the carriage driver 54 drives the carriage 13 based on the data for each course output by the CPU50. The position of the carriage 13 changed by the driving is detected by the position sensor 18. The racking of the front and rear needle beds 12 is moved by the rack driving unit 55 driving the front and rear racking mechanisms 19, respectively, based on the data output from the CPU50. The result of this drive is detected by the front racking encoder 24 and the rear racking encoder 25 as positions of the front and rear needle beds 12, respectively.

The position of the carriage 13 relative to the front and rear needle beds 12 is input to the CPU 50 as the output of the adder 42. The unit converting unit 31, the carriage speed calculating unit 32, the speed compensating unit 33, the carriage position counter 41 and the adder 42 function as position calculating means for calculating the position of the carriage 13 with respect to the needle bed 12. The CPU 50 functions as a front needle control means for controlling selection of the knitting needle during the movement of the needle bed 12 by the racking based on the position of the carriage 13 with respect to the needle bed 12.

1 is a block diagram schematically showing a schematic configuration of a flat knitting machine 11 according to one embodiment of the present invention.

FIG. 2 is a flow chart showing the needle-taking method in the case of racking after stopping the carriage at the knitting end of the knitted fabric in the flat knitting machine 11 of FIG.

FIG. 3 is a flow chart showing a pre-needle method in the case of racking while the carriage is traveling in the flat knitting machine 11 of FIG.

4 is a block diagram showing a schematic system configuration of the controller 20 for controlling the flat knitting machine 11 of FIG.

* Description of the symbols for the main parts of the drawings *

111 Flat Knitting Machine

11a needle selection gauge

12 needle bed

13, 13a, 13b carriage

14 knitted fabric

16, 16a, 16b, 16c, 16d needle selection actuator

18 position sensor

19 racking mechanism

20 controller

23 Carriage Position Two-Phase Signal Detection Section

24 racking encoder

25 racking encoder

26 Actuator ON / OFF Output

27 Actuator ON / OFF Output

34 needle selection data section

50 CPU

51 knitted fabric data storage unit

53 organizational data

Claims (3)

A needle mechanism is driven by a cam mechanism mounted on a carriage that reciprocates the length of the needle bed along the needle bed gap, and moves the needle bed in the longitudinal direction. As a flat knitting machine which can also be racked, Carriage position detecting means for detecting a position of the carriage relative to the flat knitting machine, Racking control means for controlling the racking, Needle bed position detecting means for detecting the position of the needle bed relative to the flat knitting machine, Position calculating means for calculating the position of the carriage relative to the needle bed based on the position of the needle bed relative to the flat knitting machine detected by the needle bed position detecting means and the position of the carriage relative to the flat knitting machine detected by the carriage position detecting means; , A first needle control means for controlling selection of the knitting needle during movement of the needle bed based on the position of the carriage relative to the needle bed calculated by the position calculating means; Flat knitting machine comprising a. The method of claim 1, And the racking control means controls the racking so that the carriage exits the knitting end and stops in the knitting course before the racking. The method of claim 1, And the racking control means controls the racking so that the carriage is running.

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