JPH0314140Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an edge position adjusting device for a sheet-like material, which is configured to adjust the edge position of a sheet-like material such as cloth or plastic film. It is something.

[Conventional technology]

JP-A-55-166869 discloses a conventional edge position adjustment device for a sheet-like material that is installed in a sewing machine. As shown in Fig. 7, a plurality of push/pull rollers 101 are attached to a rotating drum 100 in an annular arrangement, and motors 102, 103 are driven to move the push/pull rollers 101 in the forward or reverse direction. By rotating the cloth 200, the edge 201 of the cloth 200 is moved in the front-rear direction indicated by the arrow A. It is provided. In addition, in FIG. 7, 104 is a head that supports the fabric 200, 105 is a drum drive motor, 106 is a mounting arm, and 107, 108.
is a belt.

[The problem that the idea attempts to solve]

In the above device, when the push/pull rollers 101 are rotated to move the edge 201 forward a ₁ , the end of the fabric 200 including the edge 20 is pulled forward a ₁ by the push/pull rollers 101 , and vice versa. When moving the edge 201 backward a ₂ , the fabric 200
The end portion of is pushed by the push/pull roller 101.
In either case, the edge of the fabric 200 rubs against the surface of the drum 100, and the edge 201 overcomes the frictional resistance and moves forward _a1 or backward _a2 .

However, in the case of a soft fabric 200 such as jersey used for underwear, when the edge 201 is moved backward a ₂ by pushing with the push/pull roller 101, the edge of the fabric 200 touches the drum 10.
It rubs against the surface of 0 and does not move smoothly, and the fabric 200
There were cases in which the position of the edge 201 could not be adjusted reliably due to wrinkles or folds occurring at the end of the edge.

This tendency is applicable not only to soft fabrics such as jersey, but also to adjusting the edge position of soft materials such as plastic film (hereinafter referred to as sheet materials). The same problem occurs when Therefore, there is a problem in using the conventional device shown in FIG. 7 for adjusting the edge position of a stiff sheet-like object.

This idea was made in view of the above circumstances.
When adjusting the edge position of weak sheet materials such as cloth or plastic film,
In particular, both a pulling force and a pushing force are applied to the end of the sheet material when the edge is moved forward and backward, and in particular,
A sheet-like material that can reliably adjust the position of the edges of weak sheet-like materials such as cloth or plastic film, and also allows the entire mechanism to be configured as simply and compactly as possible. An object of the present invention is to provide an edge position adjustment device.

[Means to solve the problem]

The edge position adjustment device for a sheet-like object according to the present invention includes a rotating shaft and a plurality of push/pull mechanisms arranged in an annular shape at intervals around the rotating shaft and connected to the rotating shaft via a mounting member. This push/pull mechanism includes a plurality of wheels rotatable around an axis perpendicular to the rotation axis, a belt stretched between these wheels, and a belt that rotates as described above. It consists of a drive mechanism that moves the shaft back and forth along the axial direction, and this drive mechanism is fitted to the outside of the rotating shaft so as to be movable in the axial direction, and its tip is fixed to the belt. It consists of a sleeve, a belt to which the rear end of the sleeve is fixed, and a motor that drives the belt back and forth along the axial direction of the rotating shaft. It is configured to be placed over the area where the belt wraps around two adjacent wheels in the push/pull mechanism.

[Effect]

According to the sheet-like object edge position adjusting device configured as described above, when the plurality of push/pull mechanisms are rotated together with the rotating shaft, the sheet-like object wound around them is fed. When feeding such a sheet-like object, by moving the belt in the push/pull device back and forth, the sheet-like object is moved forward or backward, and the edge position of the sheet-like object is adjusted. At the end of the sheet-like object placed on the belt, both a pulling force and a boosting force are applied to the end of the sheet-like object by the belt wrapping points around the two wheels that stretch the belt, and the position of the edge of the sheet-like object can be adjusted smoothly and reliably. It becomes possible to do so.

Further, here, the belt drive mechanism in the plurality of push/pull mechanisms includes one sleeve fitted to the rotating shaft, one belt to which the rear end of this sleeve is fixed, and one belt for driving this belt. Since it is made up of a small number of components such as a motor, it is easy to construct the entire device with a simple and compact structure.

〔Example〕

1 and 2 show an edge position adjustment device 1 for a sheet-like material according to an embodiment of the present invention.
Reference numeral 2 denotes a mounting frame, and bearings 3A and 3B are provided at the upper rear end and the upper front end, respectively. The rear end of the rotating shaft 4 is supported by the bearing A, and the middle part is supported by the bearing 3B via the boss 6 of the flange 5. The rotating shaft 4 protrudes forward from the mounting frame 2. A mounting block 8 is provided at its tip via a mounting flange 7. A set of two plate-shaped mounting members 9 are fixed to the mounting block 8 at equal angles, and two wheels 10 and 11 are attached to each set of mounting members 9.9 at a distance from each other. The rotation shaft 4 is
It is rotatably supported around an axis perpendicular to. Reference numeral 12 denotes a guide roller, which is displaced inward in the radial direction from the straight line connecting the outermost radial surfaces of the two wheels 10, 11 at the intermediate portion between the two wheels 10, 11. At these locations, it is rotatably supported by each set of mounting members 9, 9 via a support shaft 12a. Further, a belt-shaped mounting plate 13 is fixed to the mounting member 9, and another plate-shaped mounting member 14 is attached to the rear end of this mounting plate 13.
is installed. And another mounting member 1
A belt 16 is stretched across a guide roll 15 which is rotatably supported by the wheels 1 and the wheels 10 and 11 and the guide roll 12.
The belt portion 16a between 0 and 11 is bent radially inward by the guide roll 12 into a substantially V-shape, and a V-shaped recess A' is formed on the outside thereof. A push/pull mechanism 17 is configured by the wheels 10, 11, guide rolls 12, 15, and belt 16 described above, and a plurality of push/pull mechanisms 17 having such a configuration are arranged at equal angles around the rotating shaft 4. They are arranged in a ring. Note that the mounting member 14
is the mounting screw 19 inserted into the long hole 18 of the mounting plate 13.
It is fixed to the mounting plate 13 by. Therefore, the tension of the belt 16 can be adjusted by loosening the mounting screw 19 and moving the mounting member 14 back and forth. Further, it is desirable that the surface of the belt 16 is in a non-slip state. In order to make the surface of the belt 16 less slippery, it is preferable to use rubber for the belt 16 and to form a large number of chevron-shaped teeth or a large number of protrusions on the surface. Reference numeral 20 denotes a plate around which the rubber ring 300 is wound, and is configured in a groove shape so that the rubber ring 300 can be easily positioned. It is located in This plate 20 is used when the edge position adjustment device 1 is assembled into a sewing machine and the rubber ring 300 is sewn into fabric.

Reference numeral 21 denotes a sleeve fitted to the rotating shaft 4, and the tip thereof is connected to each push/pull mechanism 17 via a clip mechanism 22.
The belt 16 of... is fixed. Further, a connecting fitting 2 is connected to the rear end of the sleeve 21 via a bearing 23.
4 is installed. 25 is a stepping motor, and a pulley 26 is fixed to the rotating output shaft of the stepping motor 25. The connecting fitting 24 is fixed to a horizontal portion 29a of a belt 29 that is wrapped in a triangular shape around this pulley 26 and two pulleys 27 and 28 provided on the mounting frame 2. , the stepping motor 25, and the belt 29 constitute a drive mechanism that drives the belt 16 in each push/pull mechanism 17 back and forth along the axial direction of the rotating shaft 4. 30 is a rotary drive motor, and a belt 33 is wound around a pulley 31 fixed to its rotary output shaft and a pulley 32 fixed to the rotating shaft 4. The attachment frame 2 is configured to be attached to a frame (not shown) of a sewing machine M, for example, so as to be able to swing from side to side via a vertical axis.

FIG. 3 shows the edge position adjustment device 1 installed on a sewing machine M.
Shown is the state in which it is equipped. 34 is a guide roller, and this guide roller 34 and the edge position adjustment device 1
and are arranged on both sides of the sewing machine M, sandwiching the sewing part N. Further, an edge folding mechanism 35 and an edge detection sensor 36 are arranged between the sewn portion N and the edge position adjustment device 1.

As shown in FIG. 4, the edge folding mechanism 35 is formed of a flat U-shaped metal plate with an open front surface, and the edge of the fabric 200 is folded back when passing inside the edge folding mechanism 35. It can be done. Therefore, a rubber ring 30 is attached to the end of the fabric 200.
0 overlap, the rubber rings 300 are sandwiched between the folded parts of the fabric 200 as shown in the same figure by passing through the inside of the edge folding mechanism 35, and in this state, as shown in FIG. It is sent to the sewing section N of the sewing machine M and is sewn.

As shown in FIG. 3, a rubber ring 300 and an end of an endless cloth 200 are wound between the edge position adjusting device 1 described above and the guide roll 34. As shown in FIG. In that case, the rubber ring 300 is prevented from swinging laterally by the plate 20 and the guide roll 34.

When the drive motor 30 is rotated in this state,
The rotation is the pulley 31, belt 33, pulley 32
is transmitted to the rotating shaft 4 via the
is fed into the sewing section N. At this time, as described above, the edge folding mechanism 35
The end portion of the rubber ring 300 is folded back and the rubber ring 300 is inserted into the folded portion.

The edge detection sensor 36 detects whether or not the edge 201 shown in FIG. If not, the stepping motor 25 is rotated by a predetermined angle in the forward or reverse direction to adjust the position of the edge 201.

If the edge 201 is displaced backward from its normal position, the stepping motor 25 rotates in the forward direction, and the horizontal portion 29a of the belt 29 moves to the right in FIG. 1, and the sleeve 21 moves to the right. to run the belt 16 in the direction of arrow B. Therefore, the end portion of the fabric 200 that is placed over the portion where the belt 16 wraps around the wheels 10 and 11 moves to the left together with the belt 16, and the edge 2
01 is set to the normal position. Also, Edge 2
01 is displaced forward from its normal position, the stepping motor 25 rotates in the opposite direction, the horizontal portion 29a of the belt 29 moves to the left in FIG. 1, and the sleeve 21 moves to the left at the same time. The belt 16 is moved in the direction of arrow C. Therefore, the edge of the fabric 200 moves to the right together with the belt 16, and the edge 201 is set at the normal position. Such position adjustment is easily possible by feeding back the detection signal of the edge detection sensor 36 to the stepping motor 25.

Here, when the edge 201 moves forward as indicated by the arrow C, a tensile force is applied to the fabric 200 by the part where the belt 16 is wrapped around the wheel body 10, and the part where the belt 16 is wrapped around the wheel body 11 is applied to the fabric 200. A boosting force is applied by. Also, Edge 20
1 moves backwards as indicated by arrow B, the fabric 20
On the other hand, a tensile force is applied to the wheel body 11 by the portion where the belt 16 is wound around the wheel body 11, and a boosting force is applied by the portion where the belt 16 is wound around the wheel body 10. Here, a clearance C' is secured between the rubber ring 300 and the fabric portion 200a that spans between the front and rear wheels 10 and 11 of the push/pull mechanism 17, so that the fabric part 200a does not come into contact with each other. Since there is no frictional resistance due to rubbing between the rubber ring 200 and the rubber ring 300, the fabric edge 201 moves smoothly due to the above-mentioned tensile force and the pushing force, and the predetermined position adjustment can be performed reliably. The position of the folded end of the fed fabric 200 is set with high precision, and sewing is performed immediately.

In the edge position adjusting device 1 of the present invention, the winding form of the belt 16 is not limited to that shown in FIG. For example, it can be wrapped around the wheels 10 and 11 and the guide roll 12 between them as shown in FIG. You can also wrap it around it. In FIGS. 5 and 6, elements that are the same as or correspond to those shown in FIGS. 1 to 4 are given the same reference numerals.

In the above explanation, a case has been described in which the edge position adjustment device 1 is installed in the sewing machine M to adjust the position of the edge 201 of the fabric 200. However, the edge position adjustment device 1 of the present invention does not necessarily need to be installed in the sewing machine M. It can also be used, for example, in a plastic film welding process where the plastic film is fed while adjusting the edge position.

[Effect of idea]

As described above, according to the edge position adjustment device according to the present invention, when moving the edge of a sheet-like object forward or backward, the edge of the sheet covered with the belt in the push/pull mechanism can be moved forward or backward. It is possible to apply both a pulling force and a pushing force to the edge of a sheet-like object, and since the belt in the push-pull mechanism contacts the sheet-like object over a wide range, it is possible to apply Even in the case of a weak material such as plastic film, the position of the edge can be adjusted with high precision. Moreover, as a driving mechanism for the belts in the plurality of push/pull mechanisms arranged annularly around the rotating shaft, one sleeve fitted to the rotating shaft and one belt to which the rear end of this sleeve is fixed are used. Since it is composed of a single motor that drives this belt, the entire apparatus can be constructed easily and compactly.

[Brief explanation of drawings]

FIG. 1 is a sectional view of the edge position adjustment device, FIG. 2 is a front view of the main parts of the edge position adjustment device, and FIG. 3 is a schematic front view of a sewing machine equipped with the edge adjustment device according to the embodiment of the present invention. , FIG. 4 is an enlarged sectional view taken along the line - in FIG. 1, FIGS. 5 and 6 are explanatory views showing examples of belt winding, and FIG. 7 is a side view showing a conventional edge position adjusting device. 1... Edge position adjustment device, 4... Rotating shaft,
9, 14... Mounting member, 10, 11... Wheel body, 1
6... Belt, 17... Push-pull mechanism, 25... Drive mechanism, 200... Fabric (sheet-like material).

Claims (1)

[Scope of utility model registration request] It includes a rotating shaft, and a plurality of push/pull mechanisms disposed annularly at intervals around the rotating shaft and connected to the rotating shaft via attachment members, the pushing/pull mechanisms are arranged around the rotating shaft. a plurality of wheels rotatable around an axis perpendicular to the rotation axis, a belt stretched between these wheels, and a drive that moves the belt back and forth along the axial direction of the rotating shaft. This drive mechanism consists of a sleeve that is fitted to the outside of the rotating shaft so as to be movable in the axial direction thereof and whose distal end is fixed to the belt, and a sleeve that is fixed to the rear end of the sleeve. The belt is composed of a belt and a motor that drives the belt back and forth along the axial direction of the rotating shaft, and further, the end of the sheet-like object is connected to two adjacent wheels in the push/pull mechanism. 1. An edge position adjustment device for a sheet-like material, characterized in that the device is configured to be placed over a wrapping portion of a sheet-like material.