JPH0357500A - Automatic stitch dividing, forming and working device - Google Patents

Abstract

PURPOSE:To execute satisfactory stitch dividing work by providing an energizing means to mount a pressuring and heating device to a holding member to be freely vertically moved and to apply upward pressure to the pressurizing and heating device and adjusting pressing force generated by this energizing means by an adjusting means. CONSTITUTION:On a vertical face 11a of a moving arm (holding member) 11 to be moved in two orthogonal directions on a vacuum mat 12 as a cloth holding stand by a prescribed driving means, a pair of guide parts 11b and 11c are projected to be extended vertically to the vacuum mat 12. After the pressing force is suitably set, a CPU 24a drives a driving means and according to the stitch form data, which are stored in a ROM 24b beforehand, for an object W to be worked, a pressurizing and heating device 22 is horizontally moved together with a moving arm 11. Then, the stitch dividing work is executed to the whole areas of sewing margins W1a and W2a in a cloth pressing device 22a1 of the same device 22.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an automatic seam splitting or shaping processing device for automatically splitting and shaping a workpiece in sewing processing. ? Prior Art] In the processing process of sewn products, as shown in FIGS. 7(a) and (b), the seam allowance W is
Fold 1a, W, a left and right around seam line S y
There are many tm cutting processes.

For example, for slacks, skirts, jackets, etc., after lockstitching, there are various splitting operations such as splitting the front edge, splitting the collar edge, and splitting the center of the back. In the past, they were either finished, or temporarily opened with an iron and then pressed, but this manual process had low productivity and required a lot of man-hours, resulting in high costs.
In order to solve this problem, conventionally, a seam, l, as shown in FIG.
Seam split forming processing device when s is linear (Unexamined Japanese Patent Publication No. 1983
-31700) has been proposed and implemented. This device performs the following operations on a workpiece W after lockstitching (see FIG. 7(a)) placed on a cloth placing table 1. That is, first, the seam allowance W1 al WZa in the upright state is suctioned by suction pipes (seam allowance opening means) 2a and 2b located on both sides thereof (
(See Figure 19(b)). Next, the suction pipes 2a and 2b move in the direction of separating from each other, and the suctioned seam allowances W, a,
W2a is opened to some extent as shown in FIG. 9(c).

Thereafter, the pressurizing and heating device 3 equipped with a heating means such as an ultrasonic generator is lowered from the initial position by the operation of the air cylinder 4, and the tip portion 3a of the pressurizing device 3 is lowered from the initial position to open the seam allowance Wia, W. Press onto a. Both seam allowances W1a where this tip portion 3a is opened,
The force of pressing onto W2a is called pressing force. In this state, the pressure heating device 3 moves forward (X direction) along the seam line S of the workpiece W together with the arm 6 that moves in conjunction with the motor 5, and the front end of the seam allowances W0a, W, a Approximately 50 seams are split into the section, and then it is once raised to its initial position. Next, a moving table (
The cloth holding table 7 moves forward from the initial position to grip the front end of the workpiece W, and then moves backward. m generation Wl
a+ The part of W2a that has not been subjected to seam splitting is moved onto the processing table 8.

Here, the elevated pressurizing and heating device 3 is moved onto the processing table 8 by the operation of the motor 5. Then, air cylinder 4 again
It is lowered by the operation of , and the tip 3a presses the end of the part that has been previously sewn. Thereafter, the moving table 7 moves rearward, and the workpiece W is moved relative to the pressure heating device 3.

As a result, the unprocessed portions of the seam allowances W, a, W, a are also subjected to seam splitting by the tip portion 3a of the pressurizing and heating device 3. In FIG. 8, reference numeral 9 is an exhaust pipe provided in the pressure heating device 3, and the air blown out from this pipe 9 creates a seam allowance W in front of the tip portion 3a of the pressure heating device 3. It plays the role of opening a, W, and a. Furthermore, Japanese Patent Application Laid-Open No. 63-31700 (see FIG. 7) proposes a seam split forming processing device for the case where the seam line is curved. That is, on a vacuum mat having numerous small holes on its surface, a pair of facing fabric opening plates (fabric holding table) having numerous small holes are movably provided, and the workpiece W is placed on this vacuum mat through the small holes. Fixed by adsorption. Then, in order to make the pressure heating device and seam allowance opening means follow the seam, an image processing device or the like is used to recognize the curve of the seam allowance, and thereby the pressure heating device, etc. is moved in the X and Y directions. I'm trying to get them to follow suit.

The pressurizing and heating device can be moved in the vertical direction by a screw motor.6 [Problems to be Solved by the Invention] As mentioned above, the conventional seam split forming processing device has During machining, the pressurizing and heating device 3 is lowered from the initial position to a certain machining position by the operation of the air cylinder 4 to press down the seam allowances W1a and W2a. a. The pressing force on W2a is approximately constant. Therefore, even if the insertion of the workpiece W and the cloth thickness are changed, this pressing force does not change, so if seam splitting work is performed under these conditions, rubbing may occur depending on the type of workpiece W and the cloth thickness. Problems such as scorching occurred and the relative position between the tip 3a of the pressurizing and heating device 3 and the seam allowance Wx at W2 a shifted.

For this purpose, the pressure heating device is attached to a mounting base that is screwed into a vertically held screw shaft, and the pressure heating device is moved together with the mounting base to a desired height by rotation of the screw shaft. Some have also been proposed. According to this, the height of the pressurizing and heating device can be set in M density in correspondence with various cloth thicknesses, and it is possible to solve the above-mentioned problems.

However, even with this device, if the cloth has slight bends, wrinkles, or unevenness on the cloth itself, the tip of the pressure heating device will catch it, causing the workpiece to be processed. Objects may shift or cloth may press against each other in a wavy manner.

This invention was developed by focusing on the above-mentioned problems, and aims to provide a seam-splitting forming processing device that can perform appropriate seam-splitting processing on workpieces of any type and thickness. purpose.

[Means to solve the problem]

This invention lowers the tip of a pressurizing and heating device that is raised and lowered by an elevating mechanism to the seam allowance of a workpiece that has been opened by a seam allowance opening means, and also connects a cloth holding table that holds the workpiece to a pressurizing device. In the automatic seam splitting forming processing device that folds the seam allowance portion along the seam line by overlapping the non-seam allowance portion by moving the heating device relative to the heating device, the elevating means is configured to pressurize and heat the seam allowance portion. It consists of a holding member on which the device is mounted so that it can be raised and lowered, a biasing device that applies an upward pressing force to the pressurizing and heating device, and an adjusting device that evens out the biasing force of the biasing device. It is something.

[For production]

In this invention, the pressurizing and heating device presses the seam allowance with a certain degree of freedom in the vertical direction, and it is possible to perform seam splitting while responding to steps, unevenness, etc. of the seam allowance. In addition, when changing the pressing force on the seam allowance, it can be changed by adjusting the upward pressing force by the biasing means using the adjustment means, and it is possible to change it by adjusting the upward pressing force by the biasing means, so that it can be changed appropriately for the seam allowance of any type and thickness. Pressure force can be applied.

[Embodiments of the invention]

Embodiments of the present invention will be described below with reference to FIGS. 1 to 6. Note that the same or equivalent parts as in the conventional example are given the same reference numerals, and detailed explanation thereof will be omitted.

FIG. 1 is a diagram showing main parts in a first embodiment of the invention. In the figure, 1l is a moving arm (holding member) that moves in two orthogonal directions (X, Y) by a predetermined heel movement means (not shown) on a vacuum mat 12 serving as a cloth holding stand, and its vertical surface 11a includes a pair of guide portions 1lb, ll extending perpendicularly to the vacuum mat 12.
C is provided protrudingly. Further, numerous small holes 12a are formed on the surfaces of the vacuum 12 and the pair of cloth holding tables 12b, which communicate with a vacuum chamber (not shown), and the workpiece W is held by the cloth by the suction force in these small holes 12a. 613 that can be fixed to the surface of the table 12b
is a screw rotation motor attached to the vertical surface 11a of the movable arm 1l via a mounting portion 1↓d, and a screw shaft 15 is vertically connected to this motor 13 via a coupling 14. Reference numeral 16 designates a first moving table which is screwed onto the screw shaft 15 and whose side end portion is fitted into the guide portion 1lb so as to be able to move up and down.
Together with this, they constitute the mm means. Reference numeral 17 denotes a second movable base whose side end portion is fitted into the guide portion 11c of the movable arm 1l so as to be able to move up and down, and this second movable base 17 is located below the first movable base 16. It is suspended from the first movable table 16 by a coil spring 8.

The lower end of this coil spring 18 is hooked to the protrusion 17a of the second movable base 17, while the upper end thereof is hooked to the protrusion 17a of the second movable base 17.
It is hung on the lower end of the screw shaft l9 inserted through the screw shaft l9. Further, the screw shaft 19 is locked to the upper surface of the first moving table ↓6 by a locking plate 20 fixed above the screw shaft 19, and there is no space between the locking plate 20 and the first moving table 16. , load cell 2
1 is intervening. This load cell 2l detects the downward tensile force applied to the locking plate 20 via the coil spring 18, and outputs a voltage corresponding to the tensile force. 22 is a pressure heating device fixed to the second movable table l7. This pressure heating device 22 has a cloth pressing section 22 at the tip.
The ultrasonic oscillator 22 includes an ultrasonic horn section 22a having a
b causes the cloth pressing portion 22a1 to be heated.

Further, 23 is a digital display that displays the tensile force detected by the load cell 21. In Figure 1, 2
Reference numerals a and 2b represent suction pipes, and reference numeral 9 represents an exhaust pipe, both of which have the same functions as those shown in the prior art.

FIG. 2 is a diagram showing a control system circuit in this first embodiment. In the figure, 24 is a CPU 24a, a ROM 24b
, RAM 24c, etc., and the CPU 24 of this microcomputer 24
a indicates the swing circuits 13a and 22b of the screw rotation motor 13 and the ultrasonic generator 22b in accordance with the detection output from the load cell 21 and the input data from the input device 25.
1 and the moving mechanism of the moving arm 11 (figures not shown)
It is designed to control the operations of other parts. When performing processing work using the seam splitting or shaping apparatus having the above configuration, the operator first inputs the type (knit, woolen fabric, chemical fiber, etc.) and thickness of the workpiece W using the input device 25. Then, the CPU 24a reads out data such as the appropriate pressing force Fo and moving speed for each type and cloth thickness, which was previously stored in the RAM 24c.
Next, when the workpiece W as shown in FIG. 7(a) is fixed at a predetermined position on the cloth holding table 12b placed on the vacuum mat 12 and a processing start command is input, the following seam dividing processing is performed. It will start. That is, first, the suction pipe 2a
, 2b opens the front end of the seam allowance W1a I W2 a to the left and right as in the conventional technique (see Fig. 9), and the seam allowance W1a
, the cloth pressing part 22a of the pressurizing and heating device 22 is lowered onto W2a to press the seam allowance W2a. At this time,
The pressing force F applied to the seam allowance W IB, W2 a is the third
The elastic force p generated in the coil spring 18 from the total self-gravity F of the first movable platform 6 and the pressure heating device 22 as shown in the figure
t (Fi<Fil). Note that this elastic force F2 changes in proportion to the length (expansion amount) Δ2 of the coil spring 18 expanded from its natural length due to the total self-gravity F1. That is, the elastic force F,=kΔ angle (k is the spring constant of the coil spring l8). In addition, since the locking plate 20 presses the load cell 21 downward due to the elastic force F2 of the spring 18 and its own weight, a signal corresponding to the pressing force is output from the load cell 2 to the CPU 2.
4 Sent to a. Then, the calculated pressing force is displayed on the display 23, and the pressing force F and the above-mentioned RAM are displayed.
The appropriate pressing force F6 read from 24c is compared.

If the two values F and F0 do not match, the screw rotation motor 13 is activated to rotate the screw shaft 15, the first moving table 16 is moved upward or downward, and the coil spring 1 is moved upward or downward.
F.8 by changing the elongation amount Δa. Match and F.
For example, if the pressing force F calculated by the CPU 24a is larger than the appropriate pressing force F0 (F>F.), the first moving table 16 is raised to increase the extension amount ΔTomoe of the coil spring 18. , the elastic force F2 increases. As a result, the pressing force F applied to the seam allowance Wia, W, a decreases, and when F1 and F match, the motor 1
Stop 3. And vice versa. F<F. In this case, lower the movable table 16 for the first step to obtain the appropriate pressing force F. Match it to.
After setting the appropriate pressing force F0 in this way, the CPU
24a operates a swinging means (not shown), and the ROM 24b is
The pressurizing and heating device 22 is moved horizontally together with the movable arm 11 according to the stitch shape data of the workpiece W stored therein (see FIG. 4).
At , the seam splitting process is applied to the entire area of seam allowance Wlar W, a. In addition, during the movement process of the cloth pressing part 22a, even if there are small wrinkles or steps in the seam allowances W, a, W2a, the pressure heating device 22 is elastically moved through the coil spring 18. Since it is connected to the first moving table 16 and can move up and down, the cloth pressing part 22a4 moves smoothly while overcoming wrinkles and steps. Therefore, the seam splitting process can be performed reliably without the workpiece W shifting or coming off (a<deviating from the seam allowance) as in the conventional method. FIGS. 5 and 6 show a second embodiment of the present invention, which will be explained below. Note that the same or equivalent parts as in the first embodiment are given the same reference numerals, and detailed explanation thereof will be omitted.

In the figure, 27 is an air cylinder (biasing means) attached to the vertical surface 11a of the movable arm 11 via a cylinder support 28, and the tip end 27 of the cylinder rod 27a is
7a8 supports from the lower surface a second moving table 17 which is fitted into the vertical surface 11a of the moving arm l1 so as to be able to rise and fall. The air cylinder 27 is also connected to an air source 31 via a solenoid valve 29 and a pressure regulator 30, and by opening the solenoid valve 29 and supplying air, the cylinder rod 27a moves upward. It is designed to protrude and raise the second moving table 17 and the pressurizing and heating device 22. Further, 32 is a cushion as a shock absorber made of an elastic body attached to the cylinder support base 28, and has an actuating part 32a that is elastically biased upward. It is designed to reduce the impact of descending the 17. 33 is a well-known microcomputer consisting of a CPU 33a, ROM 33b, RAM 33c, etc., and an input device [
Commands input from 34 and R○M33b, RAM33
The CPU 33a controls the operation of each part including the solenoid valve 29 and the pressure regulator 30 according to the data stored in the CPU 33a. It has become.

The pressure and heating device 22, the vacuum mat 12, the vertical surface 11a of the movable arm 11, etc. are substantially the same as those in the first embodiment, and although not particularly shown, the first Similar to the embodiment, suction pipes, exhaust pipes, etc. are provided. The second embodiment of the present invention is constructed as described above, and now the workpiece W is placed on the vacuum mat l2,
When a machining start command is input, the CPU 33a reads the ROM 33.
Based on the stitch shape data stored in the RAM 33c and the appropriate pressing force, moving speed, adjustment means, etc.
The cylinder rod 27 of the air cylinder 27 is moved by moving the moving arm 11 and intermittently opening and closing the solenoid valve 29.
a to move the second moving table 17 up and down.

As a result, the cloth presser foot 22a1 of the pressurizing and heating device M22 moves along the seam while pressing and releasing the seam allowances W1a, W, a, and the seam allowances Wa, W2a are moved by the cloth pressing portion 22a1.
It is bent by the pressing force when it descends, and a seam splitting process is applied. In addition, in this processing operation, the pressurizing and heating device 22 and the second moving table l7 fall due to their own weight, so if they are dropped as they are, the impression of the small hole 12a of the vacuum mat 12 will be left on the workpiece W due to the impact of the descent. However, in this embodiment, the shock is provided by the cushion 32 that contacts the lower surface of the moving arm 11, so that it is possible to prevent excessive shock from being applied to the workpiece W. ．． In this way, in this second embodiment, the pressure heating device I! 22 is moved up and down, and the seam allowances W, a, W. When performing seam splitting on a, the first embodiment requires a slow movement speed under an appropriate pressing force, but in the second embodiment, good seam splitting can be achieved at a fairly fast moving speed. It can be processed. In the first and second embodiments, the workpiece W is fixed on the cloth holding table 12b placed on the vacuum mat 12, and the pressurizing and heating device 22 is moved along with the moving arm 11 to
, the explanation has been given using an example of a case in which seam splitting can be performed on a curved seam allowance by relatively moving it in the Y direction, but there is no particular need for curved seam allowance processing. In some cases, the workpiece W may be moved relative to the pressure/heating device 22. Moreover, as a pressure heating device, as shown in the above embodiment, an ultrasonic heating device I! In addition to the one using 22, other types having a heating means may also be used. For example, a heating device such as steam, heater, laser, high frequency, magnetron, etc. may be used, and the same effect can be expected with any of them.

〔Effect of the invention〕

As explained above, according to the seam split forming processing apparatus according to the present invention, the pressure heating device is attached to the holding member so as to be able to rise and fall freely, and the pressure heating device is attached with an upwardly suppressing force. A biasing means is provided, and the pressing force of the biasing means is adjusted by an adjusting means! Ill! By doing so, no matter what type of seam allowance or fabric thickness the work piece has, it can be pressed to the necessary and sufficient level without causing any shift of the work piece or the phenomenon of the fabric pressing against each other in a wavy manner. The seam allowance can be bent with pressure, allowing for excellent seam splitting.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a first embodiment of the present invention, FIG. 2 is a block diagram showing a control system of the same embodiment, FIG. 3 is an explanatory side view showing the operating state of the same embodiment, and FIG. 4 5 is a partially enlarged perspective view showing the seam splitting state in the same example.
The figure is an overall explanatory view showing the front appearance and control system in the second embodiment of the present invention, FIG. Figure (a
7(a) is a perspective view showing the workpiece before seam splitting, and FIG. 7(b) is a perspective view showing the workpiece after seam splitting. The figure is a perspective view showing a conventional seam split forming processing device, Figures 9 (a), (b), and (c).
9 is an explanatory front view showing the operation of the suction pipe shown in FIG. 8. FIG. 11... Holding member 12... Cloth holding table (vacuum mat) 18.
...Coil spring (biasing means) 27...Air cylinder (biasing means) W e, W,... Cloth W... Workpiece Wl a * Wz a --- Seam allowance 24th No. Figure 1 Figure 5 1]

Claims (1)

[Claims] A workpiece made by sewing together a plurality of overlapping pieces of cloth with a seam allowance left behind is developed by expanding the non-seam allowance portion horizontally along the seam line so that the seam allowance stands up. The seam allowance is opened left and right along the seam by a seam allowance opening means, and a heated pressure heating device that is raised and lowered by a lifting mechanism is placed on the opened seam allowance. The automatic folding machine folds the seam allowance part along the seam line so as to overlap the non-seam allowance part by lowering the tip part and moving the pressurizing and heating device and the cloth holding table relative to each other. In the seam split forming processing device, the elevating mechanism includes a holding member on which the pressure heating device is mounted so as to be able to move up and down, a biasing means that applies an upward pressing force to the pressure heating device, and this biasing mechanism. 1. An automatic seam-splitting forming processing device characterized by comprising: an adjusting means for adjusting the pressing force by the force means.