JPH0133585B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Application and Summary of the Invention) The present invention relates to an apparatus for manufacturing embroidered carpets, and in particular, to a embroidered carpet manufacturing apparatus for forming a carpet surface by inserting pile threads into a base fabric using a hook machine. This relates to a Yu-carpet manufacturing device, and by running a hook machine along pre-memorized designs, it can efficiently embroidery Yu-carpets with patterns that vary greatly, which were previously produced by hand-weaving. It enables production.

In addition, when the hook machine is run according to a pre-specified pattern, the running posture of the hook machine is controlled in the same way as in hand weaving, so that even if it is a mechanical stitching work, the hook machine will not move. This is to ensure smooth running operation.

(Prior art and its problems) There are two types of embroidered carpets: tufted carpets and so-called hook drags produced by a hook machine.

In the case of embroidered carpets using this hook machine, although the productivity is inferior to that of tufted carpets, it has the advantage that carpets with various designs can be produced.

As shown in FIGS. 8 and 9, the hook machine 1 inserts a movable tube 11 whose tip is cut diagonally from the upper surface of the base fabric A, inserts the pile yarn B into the movable tube, and then inserts the movable tube 11 into the movable tube 11. A loop-shaped portion C is formed by an insertion plate 12 inside, and the loop-shaped portion C is cut by scissors 13 built into this movable cylinder 11 as necessary. This is because by running the hook machine 1 only on the (back) side when viewed as a figure, a pattern corresponding to the running trajectory can be woven. Therefore, with this hook drag, even carpets with painterly designs,
Weaving can be accomplished by setting the travel trajectory of the hook machine and selecting the color of the pile yarn used.

However, until now, there has been no machine that runs this hook machine automatically to mechanically produce carpets with various designs; instead, a method has been adopted in which a worker manually holds the hook machine and runs it on the base fabric to weave the carpet. ing. One reason is that there are certain restrictions on the running posture of the hook machine 1, and the hook machine 1 must be run so that the diagonal cut at the tip of the movable tube 11 faces backward with respect to the running direction. This is because it was difficult to automatically control the attitude of the hook machine each time according to the travel trajectory.

In order to make it possible to mechanically produce carpets with large variations in designs in a variety of ways as needed, the present invention has a hook machine that runs automatically according to the output of an NC device, and The technical problem is to ensure that the vehicle is always properly set with respect to the direction of travel.

(Means) The technical means of the present invention for solving the above technical problem is to set one side of the frame 2 stretched with the base fabric A in the X-axis direction, and to set the direction of the adjacent side to the Y-axis direction. , a first traveling table 3 which is caused to travel in the Y-axis direction and is driven by a first driving means is provided above the frame 2, and a first traveling table 3 which is caused to travel by a second driving means and is caused to travel in the X-axis direction by the first traveling table 3 is provided above the frame 2. A second traveling platform 4 that travels is provided, and a rotating body that is rotated forward and backward by a third drive device and has an opening 40 in the center is provided on the second traveling platform 4, and a hook machine 1 is attached to this rotating body.
is attached so that it can be raised and lowered freely, and the needle mechanism section 10 at the tip of this hook machine is positioned in the center of the opening so as to be able to come into contact with the base fabric A below, and the above-mentioned, first, second, third drive An NC device N is provided for controlling the operation of the means and the hook machine 1, and this NC device has at least an amount corresponding to the amount of operation at each point in time of the first, second, and third drive means in accordance with the weaving order of the pattern. The purpose of this feature is to allow input of signal data.

(Operation) The above technical means of the present invention operates as follows.

Pile yarn B is attached to the hook machine 1 according to a preset pattern. On the other hand, the NC device has
Data corresponding to the pattern is read from a storage means such as a tape, and by reading this data or by a previous operation, the hook machine 1
is brought into contact with the base fabric A.

Next, as described in the technical means section above, the NC device receives signals corresponding to the operating amounts of the first, second, and third drive means at each point in time when weaving the design. Data is read in, and each of these driving means is controlled in various ways depending on the signal data. As this control method, for example, a control method as shown in the flowchart of FIG. 15 can be adopted.

That is, the position of the hook machine 1 at each point in time as the pattern is woven is expressed by two types of variables representing the X and Y coordinates, and the two types of variable groups are stored in the NC device. Load sequentially according to the order. Then, the second driving means is driven in accordance with the magnitude of the read X coordinate, whereby the second traveling platform 4, which is moved by the second driving means, is moved to the above X coordinate. Similarly, the first driving means is operated depending on the magnitude of the Y coordinate read, and the first traveling carriage 3 moved by the driving means is moved to the Y coordinate.

As a result, the hook machine 1 disposed on the second carriage 4 is moved by one pitch in the combined direction of the moving directions of the second carriage 4 and the first carriage 3.

Next, from the displacement △X in the X-axis direction and the displacement △Y in the Y-axis direction when moving by one pitch,
For example, the angle between the moving direction of the hook machine 1 (the direction that combines the moving directions of the first traveling platform 3 and the second traveling platform 4) and the X-axis direction is calculated, and the angle is adjusted to match the calculation result. 3. Drive the drive device. Then, the rotating body, which is rotated forward and backward in conjunction with the third drive device, rotates by a certain angle, thereby controlling the attitude of the hook machine 1 attached to the rotating body. That is, the posture of the needle mechanism section 10 provided at the lower end of the hook machine 1 is controlled, and the cutting slope at the tip of the movable cylinder provided on the needle mechanism section 10 is rearward with respect to the running direction of the hook machine 1. Posture control is achieved so that the object faces the direction of the object. Thereafter, the weaving operation of the pile yarn B is carried out in the same manner as in the conventional method described above.

Then, by repeating the movement of the first and second carriages 3 and 4, the posture control of the hook machine 1, and the weaving of the pile yarn B until the design data to be read into the NC device is completed, the carpet weaving work is completed. I will do it.

As described above, if the device of the present invention is used, NC
By having the device read a predetermined program or data, it becomes possible to appropriately control the attitude of the hook machine 1 in relation to the traveling direction of the hook machine 1.

(effect) The present invention has the following unique effects.

By simply having the NC device read a predetermined program or data, the attitude of the hook machine 1 can be controlled in relation to the running direction of the hook machine 1.
The carpet weaving work can be performed more easily than in the conventional case described above, in which the pile yarn B is woven by manually controlling the posture of the carpet.

Conventionally, the work of weaving pile threads into the base fabric by hand with a hook machine is now done mechanically and automatically, so the time required to weave the carpet can be shortened compared to conventional hand weaving.

In addition, since each operating part operates according to the output from the NC device, by simply preparing various data storage means such as tape, it is possible to create carpets with various patterns similar to those of hand-woven carpets. It can be woven. In other words, a wide variety of carpets can be efficiently produced.

In addition, since the posture of the hook machine is properly set at each point in time, it is possible to prevent situations in which the direction of movement of the hook machine does not match its posture, and the hook machine runs and operates smoothly, thereby preventing defective products. It becomes less.

(Example) Hereinafter, an example of the apparatus of the present invention will be described based on FIG. 1 and subsequent figures.

The apparatus of this embodiment can be roughly divided into a frame 2 for stretching the base fabric A, a first running table 3 which is provided parallel to the X-axis of this frame 2 and can run in the Y-axis direction, and this A first traveling device for causing the first traveling platform to travel in the Y-axis direction, a second traveling device and a second traveling platform 4 provided on the first traveling platform 3, and an NC device N that controls the operation of each of these parts. It consists of.

Each of these parts will be explained in order below.

Regarding frame 2, frame 2 has four crossbars 2 as shown in Figures 3 and 4.
2 and 22 are combined in a square shape, and the legs 21 and 21 are connected to the lower surface and are installed in a horizontal state, and in the center of the upper surface of each side of the frame 2 there are a number of holes for securing the base fabric A. The needles 23, 23 are implanted in a row.

When the needles 23, 23 arranged on the four sides of this frame 2 are inserted into the four sides of the base fabric A, the base fabric A is stretched as shown in FIGS. 3 and 4.

In addition, in the frame of this embodiment, a structure is adopted in which the support wire group is stretched on the frame in the front, and in the case of the one in FIG. Net 2 consisting of wires with high tensile strength
4 is set up.

When the base fabric A is stretched over the frame 2 on which the net 24 is stretched and the hook machine 1 is run as shown in Fig. 5, the load of the hook machine 1 is more The amount of deflection of the base fabric A is reduced. Therefore, as shown in FIG. 5, when the peripheral portion of the base fabric A is run, the deviation of the running locus due to the change in the amount of deflection is reduced. That is, the deviation between the locus L of the hook machine 1 traveling directly against the upper surface of the frame 2 at the corner portion of the frame 2 and the traveling locus m on the base fabric A is reduced.

As the support wire group, as shown in Figure 7, single wire 2
It is also possible to use 5, 25, single wire 25,
The same effect as described above can be obtained even if the structure is installed under tension between the opposite sides of 25.

The first traveling platform 3 and the first traveling device The first traveling platform 3 includes a pair of first support rails 31 provided along opposite sides parallel to the Y-axis direction,
31, and this first traveling platform 3 advances to the first support rails 31, 31 and has paired mutually parallel leg portions 32, 32, and these leg portions 32, 32.
It consists of a pair of horizontal bars 33, 33 that connect between them.

On the other hand, a first pulse motor 3 as a first drive means is mounted on a bracket 34 of the first support rail 31.
A first feed screw 36 is provided parallel to the first support rail 31 and is rotated forward and backward by a pulse motor.

Therefore, the combination of the first pulse motor 35, the first support rails 31, 31, and the first feed screw 36 becomes the first traveling device, and the first traveling platform 3 is moved in the forward and reverse directions according to the output from the NC device N. move it to

Second traveling platform 4 and second traveling device As shown in FIG. along, i.e.
Travels in the X-axis direction. Further, at the lower part of one side of the second traveling base 4, the leg portion 32 of the first traveling base 3,
A second feed screw 4 rotatably installed between 32
1 is paired with screws, and this second feed screw 41 is rotationally driven by a second pulse motor 42 provided on one leg 32.

Therefore, the second traveling platform 4 is caused to travel forward or backward in the X-axis direction according to the output of the second pulse motor 42.
A second traveling device is constituted by the second feed screw 41, the second traveling base 4, and the horizontal beams 33, 33 in a pairwise relationship.

Next, as shown in FIG.
A pulse motor 44 and an annular gear 45 as a rotating body are provided, and the gear 45 and the output shaft 46 of the third pulse motor 44 are gear-transmitted at a predetermined rotation ratio.

Further, the peripheral wall of the central opening 40 of the gear 45 is fitted around a hole provided in the top plate 43 in a paired manner, and the support 5 supporting the hook machine 1 is fixed upright to the gear 45. .

The hook machine is a known hand-woven hook machine 1 (for example, TYPE-15 manufactured by Uneyama Seisakusho).
is used as is, and a flange 14 is added to the middle of the hook machine 1, and this is inserted into the annular frame 51 provided on the support 5, so that the mounting posture of the hook machine 1 is regulated to a constant position. As a result, the needle mechanism section 10 at the tip of the hook device 1 protrudes downward from the center of the gear 45.

Further, the annular frame 51 is mated to the column 5 at one end thereof, and the vicinity of this mating portion is connected to the output shaft 53 of a first air cylinder 52 attached to the column 5.

Therefore, in this embodiment, the hook machine 1 moves up and down in response to the operation of the first air cylinder 52.

In particular, in this embodiment, the hook device 1 and the member (annular frame 51) for attaching it to the support 5 are
The load acts as a force pushing down the hook machine 1, but as explained in the previous section,
In order to reduce the bending of the base fabric A, this pressing down force should not be made larger than necessary. Therefore, the above-mentioned first air cylinder 52 is used in an output state opposite to the usage mode to reduce the descending force of the hook machine 1.

That is, the hook machine 1 is lowered toward the base fabric A at a predetermined point by an output signal from the NC device N, which will be described later. , the first air cylinder 52 is in a non-output state and the piston in this air cylinder is moved upward by a signal input to the first air cylinder 52 to lower the hook machine. The directional pressure is set to act on the first air cylinder 52 by a signal corresponding to the upward return movement of the hook machine 1.
is in the output state, and the hook device 1 can be pulled up. Further, the upward force acting on the output shaft of the first air cylinder 52 in the non-output state is made equal to the value obtained by subtracting the appropriate downward force from the load of the hook machine 1 and its attached members.

In order to carry out the above operation, in this embodiment, as shown in FIG. 11, the empty chamber 54 on the opposite side of the output shaft 53 of the first air cylinder is opened,
Air pressure from a pressure source is supplied to the empty chamber 55 on the output shaft 53 side via a switching valve 56, and an exhaust pressure control valve 57 with a predetermined exhaust pressure is inserted into the exhaust side circuit of the switching valve 56. adopt.

As a result, the air pressure is transferred from the switching valve 56 to the empty chamber 5.
5 side, the output shaft 53 lifts the hook machine 1, and when the switching valve 56 is switched and the empty chamber 55 and the exhaust circuit communicate with each other, the piston 56 is connected to the exhaust pressure control valve 57. Thus, the output shaft 53 is lowered while the set pressure is applied.

Furthermore, the needle mechanism section 10 at the tip of the hook machine 1
is almost the same as the known one shown in FIG. 8 already mentioned, but the stopper that comes into contact with the base fabric A has been devised, and in this embodiment, the stopper connected to the fixed tube 15 is replaced with a conventional wire material. Instead of the frame piece 16 (see FIGS. 8 and 9), there is provided a dish-shaped body 18 having an arc-shaped cross section and having a through hole 17 in the center, through which the movable cylinder 11 moves up and down.

As shown in FIG. 10, when the hook machine 1 changes its posture in a lowered state, the entire outer circumferential area of the through hole 17 is in contact with the base fabric A, so that the plate-shaped body 18 is in contact with the base fabric A in the previous process. There is no need to worry about catching the exposed part of the woven pile yarn B.
Unlike in the case of hand weaving, if the conventional frame piece 16 is used as a stopper, the exposed part of the pile yarn will be hooked with this frame piece 16 when the hook machine 1 changes its position.

Further, in the apparatus according to the embodiment of the present invention, the cutting device 6 for cutting the pile yarn B has an arm 6 attached to the gear 45.
scissors 6 for cutting the
The length of the arm 61 is set to a predetermined value so that the arm 61 is located near the top of the base fabric A.

This cutting device is operated when the pile yarn B is woven into a loop shape by the hook machine 1, and is operated when the hook machine 1 completes one section of operation and returns to a fixed upward stroke. I'm starting to do that.

Moreover, this cutting device 6 is as shown in FIG.
A second air cylinder 64 that operates in response to an output signal from the NC device N, a scissor section 60 attached to this output shaft, and a cam plate 65 on which a pair of blades 62 and 63 forming the scissor section are cam-paired.
The fulcrum portion 66 of the pair of blades 62 and 63 is the output shaft 67 of the second air cylinder 64.
The protrusions 68, 68 protruding from the rear ends of the blades 62, 63 are respectively inserted into a pair of cam grooves 69, 69 formed in the cam plate 65.

These cam grooves have a substantially Y-shaped planar shape in which the distance between them gradually widens at the tip, and when the scissors 60 is advanced toward the tip of the cam plate 65, the protrusions 68, 68 close to the cam groove 69. ,69
The blades 62 and 63 are moved toward the tip side, and the distance between the rear ends of the blades 62 and 63 is widened, and the blades 62 and 63 are closed, and the pile yarn B hanging between the blades 62 and 63 is
cut.

Therefore, the amount of movement of the scissors 60 by the second air cylinder 64 and the position where the scissors perform the cutting operation depend on the relationship between the mounting position of the cam plate 65 in which the cam grooves 69 are formed and the mounting position of the hook machine 1. , it is set to a predetermined value.

Note that this cam plate 65 is attached to the arm 61 together with the second air cylinder 64.

Next, as shown in FIG.
Support stands 7 for 1 and 71 are installed in series, and
It moves integrally with the traveling platform 4. A support plate 73 having a guide rod 72 protruding from the center is attached to the support base 7, and shaft portions 74, 74 for attaching cones are arranged around the outer periphery of the guide rod 72.

A guide ring 70 is provided at the upper end of the guide rod 72 and the upper end of the above-mentioned support column 5, respectively.
The pile yarn B pulled up from the cone is guided into the hook machine 1 from the guide ring 70 of the guide rod 72 and the guide ring 70 of the support column 5 through the guide tube 19 of the hook machine 1.

Therefore, it is possible to change the color depending on which cone of pile yarn is used or which combination of pile yarn bundles is used.

In addition, when controlling the attitude of the hook machine 1 by the NC device described later, the gear 45 as a rotating body is used.
is set so that it can only rotate within a range of 185 degrees in both forward and reverse directions from its original position. Therefore, there is no worry that the pile threads pulled out from the cones 74, 74 will become entangled between the support column 5 and the guide rod 72.

Furthermore, since the gear 45 rotates within a range of 185 degrees in forward and reverse directions, when the hook machine 1 is designed to travel back and forth in a straight line, there will be variations in the input data to the NC device corresponding to the rotation angle of the gear 45. To make sure and smooth the posture reversal operation of the hook machine 1 at the end of the pattern even if there is a problem. In other words, at the end of the pattern, the input data condition may be such that the hook machine 1 has to be reversed by slightly exceeding the rotation angle of 360 degrees, but from the above angle setting, even under this condition, This is because reverse operation is possible.

Regarding the NC device N, the configuration of this NC device is similar to that used in known machine tools, etc. In this embodiment, a tape is used as the data storage means, and a tape is used for weaving one carpet. Data is recorded onto a single tape.

When this tape is applied to the tape reader of the NC device N and the NC device is set to the operating state, the data read by the tape reader is input to the arithmetic device via the input circuit, and the data is output from the arithmetic device. , each output driver performs a certain operation.

In the device of this embodiment, the output drive units to be controlled by the NC device include the first, second, and third pulse motors 35, 42, and 44, the first and second air cylinders 52, 63, and the hook. In machine 1, each of these parts is controlled to perform the operations described above.

Here, the operation of the first air cylinder 52 is different for non-loop weaving, in which the pile yarn B is cut with scissors in the hook machine 1 each time it is woven, and loop weaving, in which the pile yarn B is not cut with scissors as described above. is set to .

In the former case, before the hook machine 1 starts traveling, the hook machine 1 descends for a certain stroke, and then the hook machine 1 is allowed to travel in the operating state for one section of the pattern, that is, one section of stitching is completed. When this is completed, the hook machine 1 is immediately lifted.

To explain in more detail the equipment control when weaving the above-mentioned one-section pattern, in this one,
The position of the hook machine 1 at each point in time as the pattern is woven is recorded on a tape as a set of two types of variables representing the X and Y coordinates, and this tape is read by the tape reader of the NC device. It's getting old. Furthermore, before the device is activated, the hook machine 1 is located at the origin of "0" in both the X and Y coordinates.

Now, when the NC device starts, at the same time,
As shown in the flowchart of FIG. 16, a coordinate memory X is used to indicate the position of the hook machine 1 at each point in time.
1, Y1 is set to "0".

Next, data representing the X coordinate is read from the tape, and if the data exists (if the data is not the end), the difference △X between the X coordinate and the memory X1 representing the current position of the hook machine 1 is calculated. After the calculation, the contents of memory X1 are replaced with the value of X read from the tape. Further, the second pulse motor 42 as a second driving means is controlled so that the second carriage 4 moves to the position of the coordinate X read from the tape.

Next, data representing the Y coordinate is read from the tape, and the first pulse motor 35 is controlled in the same manner as above, thereby moving the first carriage 3 to a position matching the Y coordinate read from the tape. I am forced to do it. That is, the hook machine 1 is at the coordinate X,
It is moved to the Y position.

Next, the first air cylinder 52 is controlled to lower the hook machine 1, so that the movable cylinder 11 protruding from the lower end of the hook machine 1 is thrust into the base fabric A. In addition, in this embodiment, unlike the case described in the section of the above-mentioned function, the hook device 1 described next is
The work of attaching the movable cylinder 11 to the base fabric A is performed before the posture control operation.

Then, using the △X and △Y that were calculated and stored when reading the X and Y coordinate data, the hook machine 1
The rotation angle Tan ^-1 (ΔY/ΔX) is calculated, and the third pulse motor 44 is controlled according to the calculation result. Then, the gear 45 is rotated in conjunction with the third pulse motor 44, and the attitude of the hook machine 1 attached to the gear 45 is controlled.

Thereafter, the hook machine 1 operates in the same manner as the conventional one described above, and thereby the pile yarn B on the base fabric A is
After the weaving and cutting of the movable tube 11
is raised again and extracted. Then, the next X and Y data will be read again.

Then, if the data for one section of the pattern is lost,
The first air cylinder 52 is operated to raise the hook machine 1. On the other hand, in the case of the latter loop weave, the operation is performed as shown in FIG. 13. This operation will be explained in detail as follows. At the point in time P when one section of stitching is completed, the operation of the hook machine 1 is temporarily stopped, and when the hook machine 1 is lifted to a predetermined high position where the movable tube 11 has completely escaped from the base fabric, at that position Q. The movement of the hook machine 1 is stopped again. During this movement from point P to point Q, the hook machine performs a fixed number of idle operations (an operation of sending out only the pile yarn without inserting the pile yarn B into the base fabric A). At this operation stop point Q, the hook machine 1 is further lifted to a certain height considering the relationship with the cutting device 6, the hook machine 1 is temporarily stopped at this position, and at this stop point the second air cylinder 63 is operated. The pile yarn B hanging down from the hook machine 1 is cut by the scissors part 60, and then the hook machine 1 is returned to the initial position.

When operated in this manner, it is possible to prevent the inconvenience that would occur if the hook machine 1 was suddenly lifted to the position Q in Fig. 13 (the position where the pile yarn B is cut) at the completion of one section of stitching. . That is, it is possible to reliably prevent the inconvenience of the pile yarn B once inserted being pulled out above the base fabric A by the lifting of the hook machine.

[Brief explanation of drawings]

Fig. 1 is a plan view of an embodiment of the present invention, and Fig. 2 is a plan view of an embodiment of the present invention.
3 is a cross-sectional view of the frame 2 portion, FIG. 4 is a perspective view of the base fabric stretched over the frame 2, and FIG. 5 shows the relationship between the base fabric and the hook machine. FIG. 6 is an explanatory diagram comparing the traveling locus of the hook machine and the state in which the pile yarn is actually stitched. FIG. 7 is an explanatory diagram of other embodiments of frame 2, and Nos. 10 is a detailed diagram of the tip mechanism of the hook machine 1 adopted in the embodiment of the present invention. FIG. 11 is an explanatory diagram of the first air cylinder 52. The figure is an exploded view of the cutting device 6, No. 13.
The figure is an explanatory diagram of the operation of the hook machine in the case of loop weaving, Figure 14 is a sectional view showing the relationship between the second traveling table 4 and the support table 7, and Figures 15 and 16 schematically show the operation of the NC device. This is a flowchart, and in the figure 1... Hook machine, 2... Frame, 3... First traveling platform, 4... Second traveling platform, 40... Opening, 10...
...needle mechanism section, A...base fabric, N...NC device, B...
...Pile thread, 6... Cutting device.

Claims (1)

[Claims] 1 One side of the frame 2 on which the base fabric A is stretched is in the X-axis direction, and the direction of the adjacent side is in the Y-axis direction, and a first A traveling platform 3 is provided above the frame 2, and a second traveling platform 4 is provided on the first traveling platform 3 and is driven by a second drive means and runs in the X-axis direction. The rotating body that is rotated and has an opening 40 in the center is moved to the second traveling base 4.
and a hook device 1 is attached to this rotating body so as to be able to rise and fall freely, and the needle mechanism section 10 at the tip of the hook device 1 is positioned in the center of the opening so as to be able to come into contact with the base fabric A below, NC that controls the operations of the first, second, and third drive means and the hook machine 1 mentioned above.
A device N is provided, and this NC device includes at least the following:
A embroidered carpet manufacturing apparatus which inputs signal data corresponding to the amount of operation at each time of first, second and third drive means according to the weaving order of a pattern.