JPH0751479A - Mattress tape edging device - Google Patents

Abstract

PURPOSE:To surely, speedily, beautifully and automatically perform sewing when performing packing sewing with an edge tape to the edge part of constitutive fabric for a mattress containing springs or urethane, etc. CONSTITUTION:Tape sewing is speedily, exactly and beautifully performed by surely guiding a piping part previously fitted to the panel fabric and border fabric of a mattress 26 with a piping guide, fixing a sewing machine head and moving a conveyer 27 forward along a mattress guide plate 28 in the linear part of the mattress, and turning the mattress by 90 deg. with a 90 deg. rotary plate 33 simultaneously with pressing the center of the corner diameter of the mattress with a corner center presser 31 on the conveyer 27 in the corner part of the mattress.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to an end portion of a double-sided panel cloth made of an elastic mattress such as a spring mattress and a urethane mattress and an end portion of a side border cloth.
The present invention relates to a structure and a device that easily, uniformly, reliably and highly efficiently sew two pieces in a repulsive state with a spring or urethane inside and wrap them with edge tape and sew them together. .

[0002]

2. Description of the Related Art Conventionally, edge tape sewing of elastic mattresses (hereinafter simply referred to as mattresses) such as spring mattresses and urethane mattresses has been carried out by the mechanical device shown in FIG.

A conventional mechanical device is a system in which a mattress is placed on a table of a machine and a sewing machine moves while accommodating the periphery of the table. , Was inefficient and highly fatigued.

In the conventional edge tape sewing method, the piping guides (9), (9 ') and the piping portion (6) of the present invention shown in FIG. 3 are not attached, so that a highly skilled person is very careful. Paying attention to the above, the end of the panel material and the end of the border material are pulled into the tape binder (8) continuously with a considerable force that does not lose the repulsive force of the interior urethane and the sewing work is intermittently performed. It was carried out.

[0005]

The problems associated with the prior art will be described in detail with reference to the drawings. FIG. 12 is a perspective view of a conventional mechanical device.

In the conventional machine, as shown in FIG. 12, a carriage (59) and a sewing machine head (13) are attached to a rack (50) attached to the lower side of a table (49).
Is a system that goes around the table (49). When the knee clutch (60) is pushed by the knee, the machine stops and the mechanism starts when released. Therefore, the worker has a high fatigue level due to intermittent work while backing up. There was also a problem with inefficiency.

In the conventional machine, since the carriage (59) makes one round around the table (49), it is difficult to connect it to the conveyor of the pre-process or the post-process, and the worker has to work on the work table or the front process. Lift the heavy mattress from the conveyor, put it on the table (49) and sew the tape, and after that, lift the mattress again and flip it over to sew the tape on the back side, lift the mattress again and lift the next workbench or It required a lot of work to transfer it to the conveyor.

There are five types of mattress dimensions: single, semitable, double, quin, and king, and when prioritizing production efficiency in conventional machines, it was necessary to introduce machines of each size.

When working with mattresses of various sizes on a single machine, since the size of the mattress and the size of the table are different, the mattress corner or the machine should be positioned so that the portion to be sewn on the mattress is located at the end of the table. For each corner, turn the clutch lever (56) to the off position, stop the machine, move the carriage (59) to the mattress, and align the mattress corner with the machine corner. Sew around the mattress. To do this, it is usually necessary to stop the machine 4 to 6 times and repeat the above work. This work is done by mattress and carriage (59).
Since they move at the same time, they required a considerable amount of power and were inefficient in tired work.

In the conventional edge tape sewing method, the piping guides (9) and (9 ') or the piping portions (6) and (6') of the present invention shown in FIG. Keep pulling the edge of the panel material (1) and the edge of the border material (2) into the tape binder (8) with a strong force so as not to lose the repulsion of the spring urethane of the interior I was working on it.

FIG. 8 is a sectional view showing an ideal tape sewing state in the conventional method. In this state, the external appearance tape is in a straight line state as indicated by 3-C in FIG. However, it is difficult for a highly skilled person to sew one round of the mattress to the ideal state shown in FIG. 8 with a conventional machine.

FIG. 9 is a cross-sectional view of a phenomenon caused by a worker having a weak force for drawing the end portion of the border material (2) into the tape binder (8) in the conventional machine. In this situation, Bending of the appearance tape shown by 3-A in FIG. 11 occurs.

Contrary to the above, FIG. 10 is a sectional view caused by the fact that the operator has a weak force to pull the end of the panel material (1) into the tape binder (8). Bending of the appearance tape shown by 3-B of 11 occurs.

As described above, the tape sewn state shown in FIGS. 9 and 10 not only impairs the appearance of the mattress and reduces the commercial value, but also the panel material (1) or the border material while the mattress is in use. Since the edge of (2) may slit and cause a puncture state, which affects the life of the mattress. Therefore, when the state of Fig. 9 and Fig. 10 is found with emphasis on inspection, unravel the sewing thread (4). I had to re-sew.

[0015]

In order to achieve the above-mentioned object, the present invention is to fix a sewing machine head, and a straight portion of a mattress is sewn with a tape by a sewing machine while advancing the mattress on a guide plate and a conveyor. At this time, the speed of the conveyor and the feed speed of the sewing machine are synchronized to ensure smooth tape sewing.

For the sewing of the corner portion of the mattress, the corner of the mattress is detected by a sensor, and the mattress is sewn by a sewing machine while rotating 90 degrees around the center of the corner diameter by the force of a cylinder or a motor on the conveyor, as a base point. At this time, the rotation speed of the mattress and the feed speed of the sewing machine must be synchronized, and it is desirable that the conveyor be stopped at this time.

The sewing of the straight part of the mattress and the sewing of the corner part of the mattress enable continuity without stopping the sewing machine, thereby enabling a higher efficiency.

After the operator finishes sewing the tape on the mattress with the above machine, the operator presses the conveyor drive switch to drive the conveyor, so that the mattress on the conveyor after the sewing of the tape is moved to the next step and at the same time as the previous step. The mattress before sewing the tape, which has been completed and is waiting, is moved forward by the conveyor, and the mattress is detected by the sewing start position sensor and automatically stopped.

By placing two machines of the present invention in series and installing a mattress reversing device in the middle, the upper surface of the mattress is tape-stitched by the first machine and the mattress is turned upside down by the reversing machine. By machine-tapping the back of the mattress, the operator does not have to lift a heavy mattress.

A piping guide is arranged in the front part of the tape binder attached to the sewing part of the sewing machine, and the piping part (core string) previously attached to the end of the panel material and the end of the border material is surely secured. By guiding the tape, it is possible to sew the tape by hand and to ensure uniform sewn tape.

[0021]

In the mattress tape edge forming device configured as described above, the operator sets the piping part of the panel material and the piping part of the border material of the mattress before tape sewing on the conveyor in the piping guide and starts. Just switch it on.

Since the straight part of the mattress is fed along the guide plate by synchronizing the feeding of the conveyor and the sewing machine,
Tape sewing is performed smoothly.

In the corner portion of the mattress, the corner of the mattress is detected by a sensor, the conveyor is stopped, the center point of the corner diameter is pressed by the corner center presser, and the mattress is sewn while rotating 90 degrees by the 90-degree rotating plate. , The corner edge of the mattress does not escape from the sewing position of the sewing machine.

Since the piping portion of the border material and the piping portion of the panel material are reliably guided by the piping guide, they are accurately fed into the tape binder and tape-sewn.

[0025]

EXAMPLES Examples will be described with reference to the drawings.
In FIG. 1, the sewing machine head (13) is fixed, and the conveyor (27) is driven to move the mattress (26) on the conveyor (27) along with the mattress guide plate (28) so that the sewing machine head (13) moves forward. Attach the tape.

In the corner portion of the mattress, the corner sensor (30) detects the corner of the mattress and drives the cylinder (32) to press the corner sensor retainer (3).
1) is lowered to press the center point of the corner diameter of the mattress (26) and at the same time drive the cylinder (38) to move the 90-degree rotating plate (33) via 39, 40, 36, 35, 34. Rotate 90 degrees to rotate the mattress (26) 90 degrees and sew with the sewing machine head (13)

The drive of the conveyor (27) is designed to be automatically stopped by the electric control mechanism in the control box (47) at the time of corner rotation and to be started at the same time as the rotation is completed.

The speed of the conveyor (27) and the feed speed of the sewing machine are synchronized to enable smooth sewing of the straight portion, and the rotation speed of the rotary plate (33) at the corner portion is the feed speed of the sewing machine. Synchronize with the to enable smooth sewing of corners.

The corner center presser (31) is arranged at a position for pressing the center of the corner diameter of the mattress to prevent the mattress from escaping from the fixed position when the mattress is rotated by 90 degrees, so that the corner of the mattress is sewn smoothly. I am helping you to do it.

After the mattress tape is sewn on, the operator presses the conveyor drive switch on the operation panel (46) to drive the conveyor, and the sewn mattress moves forward on the conveyor (27) and moves to the next step. At the same time, the mattress before tape sewing, which has been waiting in the previous process conveyor (not shown), is fed into the conveyor (27) and moved forward, and the corner sensor (30) detects the corner of the mattress and automatically stops.

Therefore, the operator does not have to lift the heavy mattress, and the mechanism is most rationally conveyed by the conveyor (27). In addition, by arranging two machines of the invention in series and installing a mattress reversing device (not shown) in the middle, the upper surface of the mattress is sewn on the first machine and the mattress is turned over by the reversing device.
By sewing the back of the mattress with a second machine,
Workers no longer have to lift heavy mattresses.

FIG. 3 is a simple perspective view of the tape sewing portion. Conventionally, the panel fabrics (1) and (1 ') or the border fabrics (2) have the piping portions (6) and (6') at the ends thereof.
Was not attached, and was only sewn with an overlock sewing machine, so the piping guides (9) and (9 ') were not attached. Therefore, the worker was sewing while pulling the ends of the panel material (1) and the border material (2) into the tape binder (8).

Piping guide of the present invention (9, 9 ', 1)
2) is arranged so that the piping portions (6) and (6 ′) are located at the deepest position of the groove of the tape guide (8) at a position as close as possible to the tape guide (8).

Piping guide (9, 9 ', 1 of the present invention
2) has a shape that matches the thickness of the panel material (1) and the border material (2) and the shape of the piping parts (6) and (6 '). The pipe binders (6) and (6 ') are securely held and smoothly slide in the groove of the piping guide (9, 9', 12) by the pressing and feeding (10) of the conveyor and the sewing machine. It is fed into the groove of 8), wrapped with tape, and sewn by a sewing machine needle (11).

Since the piping guides (9, 9 ', 12) are arranged near the tape binder (8), the piping part (6)
(6 ') is securely guided and never comes off.

The piping guide (9 shown in FIG. 3
9'and 12) are the same as the piping guide shown in FIG. To set the piping parts (6) and (6 ') in the grooves of the piping guides (9) and (9'), move the lever part of the piping intermediate guide (12) to the right,
Remove the tip of the piping intermediate guide from the groove position of the piping guides (9) and (9 '), and remove the piping parts (6) and (6') from the piping guides (9) and (9 ').
It is set by inserting it into the groove and returning the piping intermediate guide (12) to its original position.

The piping guide shown in FIG. 5 can be used instead of the guide shown in FIG. This piping guide holds the piping parts (6) and (6 ') by the bearings (16) and (16'), so that the smooth movement of the piping parts (6) and (6 ') in the forward direction is further secured. To be done. Also, by adjusting the adjusting screws (19) and (19 '), the intermediate guide (25) and the bearing (16)
The gap at the tip of (16 ') can be adjusted, and it is designed so that it can respond to changes in the thickness of panel fabric (1) and border fabric (2).

To set and remove the piping parts (6) and (6 '), turn the open / close lever 22 and the centering cam (21).
Pushes up the guide plates (20) and (20 ') to open the gap between the intermediate guide (25) and the tips of the bearings (16) and (16'). Further, when the opening / closing lever is in the upper position due to the position of the fulcrum pin (23) and the action of the spring (24), the eccentric cam does not work, so that the bearing (16)
・ (16 ') is closed.

FIG. 6 is a schematic partial cross-sectional view of the mattress master edge tape sewing according to the present invention. The piping guide (9) shown in FIG. (9 ') is omitted for ease of explanation.

FIG. 7 is a plan view of FIG. This Figure 7
The piping guide (9) indicated by is omitted in the drawing for ease of explanation.

[0041]

Since the present invention is constructed as described above, it has the following effects.

The operator inserts the panel material piping portion and the border material piping portion of the mattress before sewing on the conveyor into the piping guide, and simply presses the start foot switch to automatically sew the entire circumference of the mattress with tape. Stop at the stop position.

Next, the operator removes the piping portion from the piping guide, cuts the tape, and finally finish-sewes about 10 cm to complete the sewing work. When the conveyor drive button is pressed next, the sewn mattress is conveyed to the next step, and at the same time, the pre-sewn mattress waiting in the previous step is loaded and automatically stopped at the sewing start position.

Therefore, in addition to being released from carrying-in and carrying-out of a heavy mattress by a worker, which has been a problem in the past, heavier work such as one-step chopping work, corner fitting work of mattress and machine, etc. Since it is released, one worker can operate two or three machines, and the work efficiency is significantly improved.

The piping portion of the panel material and the border material can be attached only by attaching a simple auxiliary introduction tool to the conventional overedging overlock, and the number of conventional steps is not increased.

It is not necessary to rely on the experience and "intuition" of skilled persons, which has been a problem in the past, and even beginners can pipe both cloths in a piping guide provided at the front of the insertion opening of the binder into which the edge tape is introduced. Since the piping part is completely regulated by the piping guides by simply inserting the parts in alignment, the edge tape is not completely wrapped due to "deviation" and "misalignment" at both ends, and the appearance edge tape is completely prevented from bending. As a result, the inspection process is not required, and the ideal uniform shape is secured, and it is possible to provide a beautiful and high-value mattress.

By the provision of the present invention, most of the problems of the edge tape sewing work, which is the most difficult and the most problematic in the mattress manufacturing process, are solved, and the effect of the present invention, which is automated, is very remarkable.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a mattress edge tape sewing device according to the present invention.

FIG. 2 is a perspective view of a 90-degree mattress rotating device according to the present invention.

FIG. 3 is a perspective view showing a state where a tape is sewn using the piping guide according to the present invention.

FIG. 4 is a perspective view of a piping guide according to the present invention.

FIG. 5 is a front view of a piping guide according to the present invention.

FIG. 6 is a partial cross-sectional schematic view of a mattress edge tape sewing according to the present invention.

7 is a plan view seen from the arrow of FIG.

FIG. 8 is a cross-sectional view showing a normal state of the edge tape wrapping and sewing by the conventional method.

FIG. 9 is a cross-sectional view of the case where the side border material is sewn while being “shifted” when sewn with the edge tape wrapped by the conventional method.

FIG. 10 is a cross-sectional view of the case where the surface panel material is sewn while being “shifted” at the time of wrapping the edge tape wrapped by the conventional method.

FIG. 11 is a side view of the mattress showing the bending of the straight portion due to the “deviation” of the cloth on one side when the edge tape is sewn by the conventional method.

FIG. 12 is an overall perspective view of a conventional mattress edge tape sewing device.

[Explanation of symbols]

1 surface panel fabric 1 '
Back panel fabric 2 Side border fabric 3
Edge tape 3-A Edge tape bend 3-B
Edge tape bend section 3-C Edge tape straight section 4
Sewing thread 5 Core string (piping) 6
Piping part 6'Piping part 8
Tape binder 9 Piping guide 9 '
Piping guide 10 Sewing machine press and feed 11
Sewing needle 12 Piping intermediate guide 13
Sewing machine head 16 Bearing (guide) 16 '
Bearing (guide) 25 Intermediate guide part 26
Mattress 27 Conveyor 28
Mattress guide plate 30 Corner sensor 31
Corner sensor foot 32 Cylinder 33
90 degree rotating plate 38 cylinder 45
Start foot switch 46 Control board 47
Control board 48 Sewing machine drive motor

Claims (3)

[Claims] 1. A sewing machine head (13) for tape sewing is fixed, and a straight part of a mattress is a conveyor (27).
The mattress (26) before sewing the upper tape to the conveyor (2
A mechanism for sewing while advancing along the mattress guide plate (28) by synchronizing the drive of 7) and the feed mechanism of the sewing machine. 2. In the corner portion of the mattress, the corner sensor (30) detects the corner of the mattress, drives the cylinder (32), and lowers the corner center presser (31) to move the center of the corner diameter of the mattress. At the same time as pressing, the cylinder (38) is driven to rotate the 90 ° rotating plate (33) 90 ° to move the mattress to 90 °.
A mechanism for sewing while changing the direction. 3. The piping guide device (FIG. 4 or FIG. 4) of FIG. 4 is attached to the front part of the tape binder (8) attached to the sewing part of the sewing machine head (13), and the mattress panel material (1) is attached. ) ・ (1 ') and the piping parts (6) ・ (6') that are previously attached to the border fabric (2) are installed in the piping guides (9) ・ (9 ').
Or, a device that securely and easily guides with (16) and (16 ') to sew tape easily, accurately and easily.