JPH0377B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a device that automatically and continuously sews the edges of cloth by folding them into three.

[Conventional technology]

In the conventional system, the device for taking out the original fabric and feeding it out is installed separately from the sewing table, and if there is a change in the relative position of the two, it is not only troublesome to adjust it, but also the device is installed separately from the sewing table. Because it is installed in a large area, it requires a large installation area.

Furthermore, no consideration was given to taking out the material from the original fabric, even though the conditions for taking out the material change from time to time.

In addition, sufficient consideration has not been given to the fabric in the delivery device.

Further, a device for pre-waiting the original fabric before sewing, that is, a device for keeping the original fabric suspended under the same conditions at all times, has been performed using a complicated device.

Furthermore, restrictions on the introduction of cloth before sewing have only been implemented through complicated structures.

Furthermore, no consideration was given to feeding the cloth after sewing so as not to damage the fabric.

[Problem that the invention seeks to solve]

Conventional fabric unloading and feeding devices also have problems because they are installed separately from the sewing table.

Also, regarding removal from the original fabric and sending out,
Respond to changing conditions. In addition, there were problems in dealing with fabrics, as well as problems in preliminary standby before sewing the original fabric, restrictions on the direction in which the fabric was introduced, and various problems regarding fabric feeding.

The present invention is intended to be a device that solves these problems.

[Means to solve the problem]

In the device of the present invention, the bases of the supporting arms facing forward obliquely upward are attached to the bottom surface of the sewing machine's main table, and the guide rods are suspended from the inner surface of the front end of the supporting arms from the shaft portions provided on the left and right outer surfaces of the guide rods. A take-out roll is rotatably mounted on the inner surface of the lower end of the hanging arm, and a feed roll connected to the inner surface of the rear supporting arm is connected to a variable speed motor that rotates slowly and rapidly in response to commands from a sensing device attached to the bottom surface of the sewing machine's main table. A restraining device support arm is installed on the left and right outer surfaces of the rear support arm, and the middle part of the rotatable arm with restraining rods attached to the front and back of the inner surface is attached to the upper end of the restraining device support arm, one of which is attached to the shaft part. The other side is attached so that it can be rotated and fixed with a support knob, the pressing guide and the fixed guide are bent sideways and placed opposite each other, and an adjustment device that allows the pressing of the open side to be freely attached is installed on the bent side. facing inward, attach it to the side of the sewing side front end of the sewing machine sewing auxiliary table provided above the main sewing table of the sewing machine, and attach the introduction stabilizing rod to the rear of this device.
A sewing machine with a three-fold molding fitting is installed behind it, and a roll with an internal drive device is attached to the rear end to form a three-fold sewing device for the edge of the fabric, which folds and loads the original fabric. Pass the upper end of the raw material from above the front of the guide rod attached to the tip of the support arm, below the take-out roll, and then pass backwards over the top surface of the delivery roll.
Create a hanging part of the cloth, pass it from the rear to the front of both upper restraining rods, turn it around, pass under the pressure guide, and insert the three-fold molded metal fitting from the top surface of the introduction stabilizing rod. The sewing machine folds the edges in three, sews them with the sewing machine, and then transports them backwards and downwards using rolls built into the drive unit. drives a variable speed motor so that the lowest point of the drooping part is always at a constant position, both movable restraining rods appropriately restrain the tension of the cloth, and the pressing guide part allows the cloth to be adjusted. The fabric is drawn to the sewing side, and the introduction stabilizing rod is set at a height to maintain good introduction of the tri-fold forming part, and the roll inside the drive device always draws and transfers the fabric with a constant torque. Edge tri-fold sewing device. This is how it is done.

[Effect]

The base of the support arm was attached to the bottom surface of the sewing table of the sewing machine, and the device necessary for feeding the fabric was attached to the support arm.

When taking out from the original fabric, if it is from a winding roll,
Since friction is involved when taking out the material, in order to eliminate this resistance, the original fabric was once unraveled and folded and stacked to obtain a folded original fabric. Even with this method, changes in the weight at the beginning and end of the take-up process cannot be avoided, and the raw fabric is fed from the take-off roll attached hanging down to the top of the take-out roll located above the rear. The change causes a change in the contact area of the delivery roll, and by regulating the removal based on changes in weight, it is possible to always take out the product under the same conditions.

The feed roll is connected to a variable speed motor that is activated by a command from a sensing device, and the sensing device detects the lowest point of the drooping cloth and adjusts the sewing speed and feeding speed of the sewing machine. It attempts to maintain the cloth at a constant height while making adjustments.

The mounting angle of the restraining rods, which are made up of two front and rear rods, can be changed freely by means of a support knob, so that the tension of the cloth can be restrained freely.

The pressure guide is a device that pulls the fabric toward the sewing machine using friction that presses the fabric, and since the pressure can be adjusted freely using the adjustment device, it can be regulated to a convenient introduction position for the trifold fitting. I'm struggling.

The introduction stabilizing rod is a device that regulates the vertical position of the introduction of the cloth into the three-fold molding fitting, and it is possible to set the vertical position where the three-folding can be performed most conveniently.

The roll with a driving device has a driving device installed therein and is designed to always pull the cloth with a constant torque, so that it can pull the cloth with a tension that is comfortable for sewing and also transport the cloth.

〔Example〕

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

Reference numeral 1 denotes a raw fabric, which is unrolled, folded and stacked to form a folded raw fabric 2, which is placed on the floor below the take-out roll 7.

Reference numeral 3 denotes support arms, the bases of which are attached to the left and right sides of the lower surface of the sewing machine head table 4, and are installed facing forward and diagonally upward.A take-out device, a feeding device, a restraining device, etc. are mounted on this support arm. It is something to be installed.

Reference numeral 5 denotes a guide rod, which is inserted through and attached to the inner side of the tip of the support arm 3, and the upper end of the hanging arm 6 is attached to the shaft portion protruding from both outer surfaces of the tip of the support arm. 7 is attached hanging down so that it can rotate freely.

Reference numeral 8 denotes a delivery roll, and the support arm 3 is provided with a shaft section between the guide rod 5 attached to the tip of the support arm 3 and the sewing machine head table 4 so that it can rotate freely. A pulley 9 is attached to the shaft inserted through the roll 8.
This pulley 9 is connected by a belt 10 to a pulley 12 attached to a variable speed motor 11, and by this motor 11,
The delivery roll 8 is rotated slowly and rapidly.

Reference numeral 13 denotes a restraining device support arm, whose lower base is rotatably mounted with a vault on the left and right outer surface sides of the support arm 3, at the intermediate portion on the side of the sewing machine head 4 from the delivery roll 8, and whose upper end On the front and back of the inner side,
The middle part of the rotatable arm 16 to which the restraining rods 14 and 15 are attached is rotatably attached to one side by a shaft part, and rotatably fixed by a support knob 17 to the other side.

Reference numeral 18 denotes a pressure guide, which is bent at one end, and a fixed guide 19 is provided oppositely to the lower side, and the open end side between both guides is formed to have a small gap due to elasticity. There is. Further, near the end of the bent side, an adjustment screw rod 20 is attached by inserting it into the pressing guide from the fixed guide, and an elastic body 21 is inserted into the upper surface of the pressing guide 18 by passing it through the screw rod 20.
0 is screwed with an adjustment screw 22, and this screw 22 allows the distance between both guides and the amount of pressure to be adjusted freely. It is attached to the front side of the end with the pressing part on the side through which the original fabric is inserted.

Reference numeral 23 denotes an introduction stabilizing rod, which is attached to the rear side of the pressing guide 18 in parallel with the guide 18 by means of a supporting arm 24 attached laterally, and a tightening tool attached to the lower part of the supporting arm to adjust the vertical adjustment. I try to do it freely.

Reference numeral 25 denotes a three-fold forming metal fitting, which is attached to a sewing machine sewing member and is a device for folding the edge of the original fabric into three, and a sewing machine 26 installed behind it sews the three-folded portion.

Reference numeral 27 is a roll with a built-in drive device, which is a roll with a built-in drive device and a constant torque that carries the fabric after the edges of the fabric have been sewn. This is a device that feeds the sewing table downward to the rear.

Reference numeral 28 denotes a sensing device, which passes the raw fabric 1 sent from the delivery roll 8 to the fabric preliminary standby section 3 where the fabric hangs down before being sewn through the upper restraining rod.
This is a device that monitors the lowest point P of sewing machine 9, and is installed below the sewing machine's main table 4 to keep the lowest point P always at a constant height. When the point P rises, this device commands the variable speed motor 11 to increase the speed and feed the cloth quickly, and when the P point falls, it rotates slowly, so that this lowest point P always maintains a constant position without moving greatly. It is a device that controls to maintain the

A sewing machine drive motor 29 is connected to a pulley 32 attached to the side of the sewing machine through a pulley 30 and a belt 31 attached to the side, and drives the sewing machine 26.

33 is the clutch arm, and the continuous bar 35 is attached to the petal 34.
The clutch is connected and attached when the petal is pressed, and the clutch is connected to drive the sewing machine. The tip of the clutch is connected to an electromagnetic device 36, so that by pressing a switch 37, the clutch can be kept in the engaged state at all times. 3
8 is a power switch.

The apparatus of the present invention is constructed as described above, in which the folded and stacked folded fabrics 2 are placed on the floor in front of the main table 4 of the sewing machine, and the fabrics 1 are passed through the guide rod 5 from the upper front to the lower rear. The take-out roll 7 is directed from below to the upper rear, and the delivery roll 8 is made to hang downward from the upper front to the rear, and a raw fabric preliminary standby section 39 is provided below, and the upper restraining rod 15 is rotated upward from the rear of the upper restraining rod 15. 14 from below to the front and upper side, and further reversed backward, passing through the original fabric restraining device 40, passing through the width direction regulating device 41 by the pressing guide 18 at the rear, passing above the introduction stabilizing rod 23, After the edge of the original fabric is formed into three folds through the three-fold forming fitting 25, this three-fold portion is sewn by the sewing machine 26 at the rear, and then by the roll 27 installed in the drive device at the rear.
It is designed so that it can be moved to the rear of the main table of the sewing machine.

In this way, the support arm 3 is attached integrally with the sewing machine main base 4, and the take-out roll 7 attached to the hanging arm 6 in front of the support arm 3 removes the original fabric from the folded original fabric 2 placed on the floor together with the guide rod 5. It is taken out and sent to the delivery roll 8 for the next process.The folded raw fabric 2 is taken at the height H from the top surface of the original fabric to the guide rod, and at the end of the folded fabric 2.
At H′, the weight of the original fabric varies depending on the height. Due to this weight difference, the load on the delivery roll 8 changes, making it prone to slipping.
This is appropriately controlled by the take-out roll 7 attached to the lower end of the hanging arm.
The take-out roll 7 is located almost vertically in the direction of arrow A, and moves in the direction of arrow B when the original fabric having a height H' becomes heavy.

As a result, the area of the web in contact with the delivery roll 8 is narrow when the weight is light, and widens when the weight is heavy, making it possible to always send out the web in a balanced and stable state. There is.

This also facilitates adaptation of the speed of the variable speed motor in the case of a sensing device, and constantly monitors the waiting state of the original fabric in the original fabric preliminary standby section 39 hanging between the delivery roll and the restraining rod. This is to maintain a stable state and, together with the original fabric restraining device 40 for the next feeding process, to improve sewing performance.

Next, the rotatable arm 16 to which the restraining rods 14 and 15 are attached can be rotated and fixed by the support knob 17 to restrain and adjust the overall width of the original material before sewing, thereby ensuring good sewing. It makes it easy to keep it in good condition.

Next, the press guide 18 and the fixed guide 19 insert the original fabric, and it becomes a width direction regulating device 41 that pulls the original fabric toward the sewing side. The device allows easy setting of the most convenient position in the width direction for installation.

Next, place the introduction stabilizing rod 23 in front of the three-fold molded metal fitting, and use this stabilizing rod 23 to set the vertical position.
3. It is possible to do it freely by means of a tightening tool attached below.

The drive device built-in roll 27 is a device that has a built-in drive device and always pulls the original fabric with a constant torque, thereby ensuring good sewing without causing sagging or the like.

〔Effect of the invention〕

The base of the support arm is attached to the bottom surface of the sewing table of the sewing machine, and the main part is attached so as to protrude forward.The various devices necessary for fabric feeding are integrally attached to this part, so that the fabric feeding and sewing can be easily performed. Relative adjustments are configured so that once they are set, they do not need to be done afterwards, and the installation space is also small.

The original fabric is folded and stacked in the form of a folded original fabric to eliminate unnecessary resistance and achieve the best possible transfer of the original fabric.Even with this, the remaining weight change is removed by moving the take-out roll attached to the hanging arm to send it to the next step. The delivery roll is regulated so that the original fabric can be delivered in a stable state at all times, and this also makes it difficult to maintain the lowest point P of the next original fabric preliminary standby section 39 by the sensing device. It is made easy.

This fabric preliminary standby section is controlled by a sensing device so as to always maintain a constant height, and the next fabric suppressing device 40 is rotatable by a support knob to adjust the suppression. This allows the next sewing to be done in the best possible condition.

The pressure guide is configured to be able to freely adjust the pressure, and includes a width direction regulating device 41 that pulls the cloth toward the sewing side by frictional resistance caused by the pressure.
Therefore, it is possible to easily regulate the lateral position convenient for trifold molding.

The height of the introduction stabilizing rod can be freely adjusted by the attachment part of the support arm, making it easy to regulate the height position of tri-fold molding.

The roll with a built-in drive device has a drive device built in and is designed to always pull the fabric with a constant torque.It pulls and transfers the entire fabric and keeps the sewing in good condition at all times. be.

In this way, this device can be made compact by attaching the supporting arm integrally to the sewing table of the sewing machine and attaching various devices necessary for feeding the fabric to this part. The original fabric is folded to minimize unnecessary resistance, and the take-out roll installed hanging down facilitates feeding by the next feeding roll, and also facilitates the response to the position setting of the fabric preliminary standby section. , the sewing is kept in good condition together with the next original material restraining device, and the three-fold forming is introduced in good condition by the width direction regulating device by the pressure guide and the height regulating device by the introduction stabilizing rod, and the drive This is an excellent fabric edge tri-fold sewing device, in which all devices are configured to maintain the best sewing conditions, such as by pulling and transporting the entire cloth using the rolls installed in the device.

[Brief explanation of drawings]

FIG. 1 is a side view schematically showing this device.
FIG. 2 is a perspective view of this device. 1... Original fabric, 2... Folded original fabric, 3... Support arm, 4... Sewing machine main stand, 4'... Sewing machine sewing auxiliary stand, 5... Guide rod, 6... Hanging arm, 7... ... Take-out roll, 8... Delivery roll, 9... Pulley,
10... Belt, 11... Variable speed motor, 12...
...Pulley, 13...Suppressor support arm, 14...
Suppressing rod, 15... Suppressing rod, 16... Rotatable arm,
17...Support knob, 18...Press guide, 19...
... Fixed guide, 20 ... Adjustment screw rod, 21 ... Elastic body, 22 ... Adjustment screw, 23 ... Introducing stabilizing rod,
24...Support arm, 25...Three-fold molded metal fitting, 26
...Sewing machine, 27...Roll installed in drive device, 28
...Sensing device, 29...Sewing machine drive motor, 3
0... Pulley, 31... Belt, 32... Pulley, 33... Clutch arm, 34... Petal, 3
5... Connecting rod, 36... Electromagnetic device, 37... Switch, 38... Power switch, 39... Original fabric preliminary standby section, 40... Original fabric restraining device, 41... Width direction regulating device, P ...lowest point, H...height,
H'...Height, A...Arrow, B...Arrow.

Claims (1)

[Claims] 1. Attach the bases of support arms facing forward and upward to the bottom surface of the sewing machine's main table, and install a guide rod on the inner surface of the front end of the support arm, with the lower end inner surface side of the hanging arm hanging from the shaft provided on the left and right outer surfaces of the guide rod. A take-out roll is rotatably attached to the rear support arm, and a take-out roll is attached to the inner surface of the rear support arm, which is connected to a variable speed motor that rotates slowly and quickly in response to commands from a sensing device installed on the underside of the main head of the sewing machine. Furthermore, suppressor support arms are erected on both the left and right outer surfaces of the rear support arm, and the middle part of the rotatable arm with suppressor rods attached to the front and back of the inner surface is attached to the upper end of the support arm, with one shaft being the shaft part and the other being the middle part of the rotatable arm. is attached so that it can be rotated and fixed with a support knob, the pressure guide and fixed guide are bent on the side and installed opposite each other, and an adjustment device that allows free pressure on the open side is installed on the bent side, with the open side facing inward. , Attach it to the side of the front end of the sewing side of the sewing machine sewing auxiliary table provided above the sewing machine main table, install the introduction stabilizing rod at the rear of this device, and install the sewing machine with the three-fold molding fitting attached to the rear of this device. A roll built into the driving device is attached to the end to form a three-fold sewing device for the edge of the cloth, and the upper end of the folded original fabric is folded and loaded from the upper front side of the guide rod attached to the tip of the support arm. , pass the upper surface of the delivery roll backwards under the take-out roll, provide a slack part for the cloth to hang down, pass it forward from the rear of both upper restraining rods, turn it around, and pass the lower part of the press guide. A three-fold molding fitting is inserted through the top of the introduction stabilizing rod, the edge of the fabric is folded into three, sewn by a sewing machine, and then transferred backwards and downwards by a roll built into the drive device. The take-out roll of the device is regulated by the weight of the original fabric, the sensing device drives the variable speed motor so that the lowest point of the drooping part is always at a constant position, and both movable restraining rods are The tension of the fabric is appropriately suppressed, the pressure guide part pulls the fabric to the sewing side in an adjustable manner, the introduction stabilizing rod sets the height, both maintain good introduction of the tri-fold forming part, and the drive device The internal roll is a fabric edge tri-fold sewing device that always pulls and transfers the fabric with a constant torque.